text:
Entertainment Government
Trump's Plan for Display of Military Might Draws Alarm
February 7, 2018 February 7, 2018 BRITAIN EAKIN
Donald Trump, military, Pentagon
WASHINGTON (CN) – Echoing the spectacles of totalitarian regimes, President Donald Trump's plan for a military parade bewildered historians and veterans groups alike Wednesday.
In contrast to celebrations that are held to welcome home troops or celebrate the successful end of a war, the parade idea that the Pentagon confirmed this morning would be a show of military might.
The Washington Post, which broke news of the preparations Tuesday, quoted an official as saying Trump called for the parade with memories of Bastille Day, which he observed last year in a visit with French President Emmanuel Macron, in mind.
"The marching orders were: I want a parade like the one in France," an anonymous official told the Post.
And while military celebrations are not unheard of here, University of Tennessee professor Daniel Feller could not recall any instance where one was held outside the context of a war victory.
"To hold a big official military parade without any particular reason for it – not to celebrate a victory or commemorate an event but simply to glorify military might – is, to my knowledge, unprecedented in American history," Feller, a historian of the Jackson presidency and the 19th century, said in an email.
News of Trump's parade plans also fell flat with a group that advocates for military families.
"Service members and their families deal with a lot of stress and uncertainty, Besa Pinchotti, a spokeswoman for the National Military Family Association, said in an email. "Of course NFMA believes highlighting their sacrifice is important. But what military families would rather see is budget action that would give our military the resources and training they need to defend our nation. That would be a true show of military might."
For Pinchotti, "asking military families who are fighting to protect us, to stop everything and plan their own party is just plain wrong."
Though displays of military prowess like the one Trump is organizing have been more common in countries Russia and North Korea, America did hold a two-day celebration after the Civil War and another parade in New York at the close of World War II to celebrate the Allied victory over Nazi Germany.
President George H.W. Bush was in the White House when America held its last military parade in 1991. Celebrating a victory in the Persian Gulf War at the conclusion of Operation Desert Storm, the parade ran down Constitution Avenue in Washington.
Prior to that, both Presidents Dwight Eisenhower and John Kennedy featured military equipment in their inauguration parades.
Pentagon emails released to the Huffington Post through the Freedom of Information Act confirmed that Trump also inquired about including military vehicles in his inaugural parade, sparking alarm from military officials.
Though the White House decided instead to incorporate flyovers from fighter aircraft, this too was shelved because of poor weather conditions.
The Post said Trump broached the subject again during a Jan. 18 meeting with top generals at the Pentagon, but a representative for the Defense Department offered little insight Wednesday to what Trump has planned.
"We are aware of the request and are in the process of determining specific details," the spokesperson said in an email. "We will share more information throughout the planning process."
White House press secretary Sarah Sanders also confirmed the president's request after the Post broke the story.
"President Trump is incredibly supportive of America's great service members who risk their lives every day to keep our country safe," Sanders said in a statement. "He has asked the Department of Defense to explore a celebration at which all Americans can show their appreciation."
Defense Secretary Jim Mattis spoke about the parade as well at a White House briefing this afternoon.
"I think we're all aware, in this country, of the president's affection and respect for the military," Mattis said. "We've been putting together some options. We'll send them up to the White House for a decision."
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\subsection{Introduction}

     Recent experiments indicating the existence of a
metallic state and a metal-insulator transition (MIT) in two-
dimensional (2-D) semiconductor systems \cite{} continue to
attract attention \cite{abrahams00}. There is, as yet, no
general consensus about the origin of the metallic behaviour
and it remains a controversial topic.  The metallic behaviour
appears in strongly interacting systems where $r_s$ (the ratio
of the interaction energy to the kinetic energy) is large,
typically 5 to 20 and the Coulomb interaction energy is by far
the largest energy in the problem. While the existence of a MIT
in 2-dimensional systems contradicts the well established one
parameter scaling theory for non-interacting systems
\cite{abrahams79}, it is not {\it a priori} forbidden for
strong interactions \cite{dobr97} and the observation of good
scaling behaviour \cite{simonian97}, with symmetry about the
critical density, supports the view that this is a genuine
transition, driven by the interactions. This is also
consistent with predictions of renormalisation group (RG)
theories
\cite{abrahams99,finkelstein84,castellani84,castellani98} that
a low temperature metallic phase can exist when interactions
and disorder are both important.

     An alternative view \cite{altshuler99} is that there is no
transition, just a cross-over from weakly localised to strongly
localised behaviour, and that the strong interactions do not
significantly modify the basic Fermi liquid character. Large
values of $r_s$ are almost inevitably associated with low
densities and Fermi energies ($k_B T_F$) that are not much
larger than the measuring temperatures so effects associated
with the small Fermi degeneracy are likely to be significant.
It is argued that these can fully account for the metallic-like
increase in resistivity with temperature and that weak
localisation and interaction effect corrections are present but
concealed by the larger semi-classical effects.

     Experimental support for this second viewpoint has
recently been presented based on results obtained in p-GaAs
\cite{simmons00} and p-SiGe \cite{senz00b}. In both cases the
B=0 resistivity shows no direct evidence of a lnT dependence,
the standard signature of both weak localisation and
interaction effects but the magnetoresistance has the
characteristic negative peak associated with the destruction,
by dephasing, of weak localisation. Also the Hall coefficient
shows a lnT dependence, interpreted as evidence for interaction
corrections. The magnitude of both these terms is consistent
with the standard predictions and it is argued the behaviour is
that of an entirely conventional Fermi liquid, despite the
large values of $r_s$.

     Similar measurements, in p-SiGe samples, are presented
here \cite{ptc99}. The experimental data is generally
consistent with results obtained in other samples but is more
detailed and is interpreted somewhat differently.  It is
suggested that the behaviour cannot be explained using the
standard theories for weakly interacting Fermi liquid systems.
Not only are the parameters characterising the interaction too
large to justify the assumption of weak interactions but also
there are internal inconsistencies in the analysis. At low
temperatures the saturation of resistance is generally
consistent with the predictions of renormalisation group
theories and at higher, intermediate, temperatures the results
can be understood within the framework of a new theory for
interaction effects
\cite{zala01a}. In both cases a large amplitude of spin
fluctuations plays an essential role.

\subsection{Theory: weak interactions}

     Because the data presented below is discussed,
initially, in terms of the quantum corrections for weakly
interacting systems it is convenient to summarise the
standard theoretical treatments
\cite{altshuler85,fukuyama85,lee85} which have been used,
historically, to analyse experiments. They start with a semi-
classical description of the transport, where the diffusion of
electrons at the Fermi level is considered to obey
classical dynamics and quantum effects are introduced as small
corrections. Drude-Boltzmann theory gives the zero field
conductivity as

\begin{equation}
     \sigma_0  =  n_s e^2 \tau/m^{\ast}
               = \frac{g_s} {2} k_f l \frac{e^2} {h}
\label{eq1}
\end{equation}
where $n_s$ is the carrier density, $\tau$ the transport
lifetime, m$^{\ast}$ the effective mass, $g_s$ the spin
degeneracy, $k_f$ the Fermi wavevector and {\it l} the mean
free path. In a magnetic field the conductivity components are
given by

\begin{equation}
\sigma_{xx}(B) = \frac{\sigma_0} {(1  +  \mu^2 B^2 )};
\;\;\;\;    \sigma_{xy}(B) = \mu B \sigma_{xx}(B)
\label{eq2}
\end{equation}
where the mobility $\mu$ = $e\tau / m^{\ast}$. Quantum
interference introduces a weak localisation correction to this
conductivity with a logarithmic temperature dependence

\begin{equation}
\Delta \sigma_{xx}^{wl}(T) =
     \alpha p  (e^2/\pi h) \ln (k_B T \tau/ \hbar)
\label{eq3x}
\end{equation}
where it is assumed the phase breaking time $\tau_{\phi}$
varies as $T^{-p}$. The amplitude $\alpha$ is expected to be 1
for normal scattering (-0.5 for pure spin-orbit scattering and
0 for spin scattering).

A lnT dependence also results from the Coulomb interaction
effect

\begin{equation}
\Delta \sigma_{xx}^{ee}(T) =  (1- \frac{ \textstyle 3
F^{\ast}} { \textstyle 4}) (e^2/ \pi h) \ln (k_B T \tau/ \hbar)
.
\label{eq4x}
\end{equation}
Two processes, with opposite signs, contribute here. A
Hartree term (singlet channel), involving only small momentum
transfers, and an exchange term (triplet channel) involving
$F^{\ast}$, the Fermi surface average of the screened Coulomb
interaction. Increasing $F^{\ast}$ implies an increased
tendency towards delocalising behaviour. For Thomas-Fermi
screening $F^{\ast} < 1$ but it may, in principle, be larger.
In this case a weakly interacting theory is inappropriate and
should be replaced by more sophisticated approaches but with
trends that are probably still given correctly by eqn.4. Large
values of $F^{\ast}$ imply negative coefficients for the
interaction term which may even overcome the weak localisation
term and result in a total negative, or delocalising, lnT
dependence. Values of $F^{\ast}$ larger than one are frequently
obtained when fitting experimental data
\cite{bishop82,burdis88}.

     Application of a magnetic field allows the weak
localisation and interaction terms to be separated.  At low
fields dephasing of the weak localisation term gives a
characteristic , negative magnetoresistance \cite{hikami80},

\begin{equation}
  \Delta \sigma_1 (B) =  \alpha \frac {e^2} {\pi h}
     [ \Psi ( \frac{1}{2}+\frac{\tau_B}{2 \tau_{\phi}})
  - \Psi ( \frac{1}{2}+\frac{\tau_B}{2 \tau})  +
     \ln ( \frac{\tau_{\phi}}{\tau})]
\label{eq5x}
\end{equation}
where $\Psi$ is the digamma function and $\tau_B =
\hbar/2eDB$ with D (the diffusion constant) = $v_F^2 \tau /2$.
In terms of the variable $h=2\tau_{\phi}/\tau_B$
(proportional to B and not to be confused with the Planck
constant) this function varies as $h^2/24$ for small {\it h}
and as $\ln(h)$ for $1 \ll h  \ll \tau_{\phi}/\tau$.  Fitting
to the characteristic shape, particularly at small B, allows an
experimental determination of $\alpha$ and  $\tau_{\phi}$.
Although commonly used to analyse experimental data eqn.5 is
known to be in error for large fields, when the diffusion limit
is no longer valid. In this case, however, it has been shown
\cite{minkov00} that the equation still gives a good fit to the
data but with smaller values of $\alpha$ (typically 0.5 -0.7)
and fitted values of $\tau_{\phi}$ that are in error by
10-20\%.

     Magnetic fields corresponding to $h \sim 1$,
sufficient to dephase the weak localisation, are too small to
significantly affect the interaction term  but higher fields,
large enough to produce a Zeeman spin-splitting, modify the
triplet part of this term.  This results in a positive
magnetoresistance given by

\begin{equation}
  \Delta \sigma_2 (B)  =  - ( e^2 / \pi h) ( F^{\ast}/ 2) G(b)
\label{eq6x}
\end{equation}
where $b = g^{\ast}\mu_B B/ k_B T$ with $g^{\ast}$ the g-factor
of the spins. The function G(b) is known: for small b  $G(b) =
0.084 b^2$, for large b it varies as $\ln(b/1.3)$,  and it can
be calculated in the intervening region
\cite{burdis88}.

In addition to these terms there is also the classical
magnetoconductance (eqn.2). For small B, this gives a quadratic
correction term

\begin{equation}
     \Delta \sigma_{xx}(B) \approx   - \sigma_0  \mu^2 B^2.
\label{eq7x}
\end{equation}

     For the Hall conductivity $\sigma_{xy}$ the weak
localisation corrections appear a factor of two larger
\cite{altshuler85,fukuyama85,lee85} but there are no
interaction corrections. Therefore, when the Hall coefficient
($R_H =  \rho_{xy} / B$ ) is obtained by inverting the
conductivity tensor the weak localisation terms cancel and

\begin{equation}
     \Delta R_H / R_H
     =  -2  \Delta \sigma_{xx}^{ee} /\sigma_{xx}.
\label{eq8x}
\end{equation}
The Hall coefficient is therefore expected to have a
logarithmic temperature dependence (given by eqns.4 and 8) and
a field dependence (eqn.6) but should not include any weak
localisation corrections.

     If, in low fields,  $\rho_{xx}$  rather than
$\sigma_{xx}$ data is analysed the lnT weak localisation and
interaction effect terms appear additively in the same way but
the quadratic classical term (eqn.7) is automatically cancelled
by the $\sigma_{xy}$ contribution. At higher fields, when $\mu
B$ becomes significant, the admixture of $\sigma_{xx}$ and
$\sigma_{xy}$ contributions introduces an additional term
\cite{houghton82}, $\Delta \rho_{xx} = (\mu^2 B^{2}-1) \Delta
\sigma_{xx}^{ee} / \sigma_0^2$ ie a parabolic negative
magnetoresistance with a temperature dependence given by eqn.4.

\subsection{Samples}

     The samples used in this investigation are from a set of
p-type modulation doped strained Si-Ge quantum wells which
exhibit MIT behaviour \cite{ptc97}. Grown using a low
temperature UHV-CVD process they have a Si buffer layer, a 40nm
Si$_{.88}$Ge$_{.12}$ quantum well, a spacer layer (of variable
thickness), a boron doped layer and a thin Si cap. The holes
reside in an approximately triangular SiGe quantum well,
produced by the asymmetric doping, which is strained because it
is lattice matched to the Si substrate. It has been established
that they are in almost pure  $|M_J|$ = 3/2   states, well
decoupled from other hole states by strain and confinement
\cite{hensel63,people85}. Most of the data presented here comes
either from Sample A,  with a density ($p_s$) of
5.7$\times$10$^{11}$cm$^{-2}$ which is deep in the metallic
phase or from sample B, with a density of
1.2$\times$10$^{11}$cm$^{-2}$, which is close to the critical
density for the MIT ( approximately
1.0$\times$10$^{11}$cm$^{-2}$). Values of $r_s$ (defined as
$1/(\pi p_s)^{1/2} a^{\ast}$, where $a^{\ast}$ is the effective
Bohr radius using the semiconductor dielectric constant) are
4 and 6, respectively, for the two samples.

     Effective mass values are known only approximately in this
system. Measurements from the temperature dependence of the
Shubnikov-de Haas oscillations \cite{ptc96} gave values of
0.30$_5$m$_0$ for sample A and approximately 0.23m$_0$ for
sample B. These are significantly larger than the band mass of
0.20m$_0$ \cite{hasegawa63}. It is possible this reflects a
breakdown of the standard Lifshitz-Kosevitch expression in a
system with strong quantum corrections. High field cyclotron
resonance measurements \cite{song95,wong95} have given values
as low as 0.18m$_0$.

     The g-factor ($g^{\ast}$) in p-SiGe is also not well known
but is of order 4 in perpendicular fields \cite{glaser90}. In
sample A the low field Shubnikov-de Haas (SdH) oscillations
appear initially at odd filling factors \cite{ptc96},
corresponding to a Zeeman splitting of the Landau levels
sufficiently large that $g^{\ast}m^{\ast}/m_0 > 1$. With
$m^{\ast}/m_0 $ = 0.25 - 0.30 $g^{\ast}$ is therefore of order
4. In sample B the SdH oscillations appear initially at even
filling factors so $g^{\ast}m^{\ast}/m_0 < 1$ . Using
m$^{\ast}$ = 0.23m$_0$  and taking $g^{\ast}m^{\ast}/m_0$ to be
0.8$\pm$ 0.2 gives $g^{\ast} = 3.6 \pm 1$.

\subsection{Experimental procedures}

     Measurements were made using a DC bridge \cite{avs}, with
current reversal at 15Hz. Two cryostats were used, a dilution
refrigerator giving temperatures below 100mK and a sorption
pumped He3 system that could achieve sample
temperatures down to 270mK. In both cases thermometry was in a
field free region, with the sample cooled predominantly by the
copper leads. Measurements using a calibrated, field
insensitive, thermometer in place of the sample indicated
temperature gradients of less than 5mK.

     Resistance measurements, especially in sample B, showed an
unusual sensitivity to measuring current at the lowest
temperatures. Currents as low as 1nA, corresponding to
voltages of only a few microvolts, produced detectable
metallic-like  non-linearities in the I-V characteristics and
made accurate low temperature measurements of the zero field
resistivity difficult. In addition, sweeping the magnetic field
caused abnormally large heating (and cooling) effects. These
phenomena are not well understood but are attributed, at least
in part, to the proximity of the MIT. Very slow field sweeps
were used with frequent checks (making
corrections if necessary) to ensure that the measured
resistances were the same in static and swept fields. In the
He3 system measurements in magnetic fields were also
complicated by a superconducting solenoid that had an
unexpectedly large degree of trapped flux. The
associated hysteresis was, however, found to be reproducible
and a calibration procedure could be established that
resulted in field errors, around B=0, estimated to be less than
1 mT.

\subsection{Experimental results}

     Magnetoresistance data from sample A is shown in figure 1.
At zero field the temperature dependence of the resistance is
characterised by an approximately constant low temperature
region followed by a monotonic, metallic-like, increase with
temperature. This is characteristic of samples showing a MIT.
For this sample, at 20K, the resistance has increased by a
factor of roughly two. Over the temperature range shown (0.15 -
 2.2K) a logarithmic weak localisation term (eqn.3) would be
expected to give a {\it decrease} of resistivity of order 100
ohms/square, roughly a factor of two larger and in the opposite
sense to the actual experimentally observed change. The well
defined low field negative magnetoresistance, with a width that
increases with temperature, is attributed to weak localisation;
the positive magnetoresistance at higher fields to the Zeeman
interaction term.

     Attempts to fit the field dependence to a combination of
eqns. 5 and 6 failed, even when five separate fitting
parameters (including the g-factor) were used. The alternative
approach taken was therefore to fit the data to eqn. 5 at the
lowest fields, using just three parameters: $\tau$ (determined
essentially by the B=0 value of the
resistivity), $\tau_{\phi}$ and an amplitude $\alpha$. The
results of these fits are shown in figure 1. Care was taken to
establish that the parameters were insensitive to the precise
range of B and also that they were not significantly altered
when this range was extended and an additional
quadratic term included. Values of $\tau_{\phi}$,  shown in
figure 2, are similar to those obtained from other
measurements in p-SiGe \cite{emeleus93,cheung94,senz00a}.
Fitted values of $\alpha$ were 0.7 at the lowest temperatures
decreasing to 0.6 at higher T.

      The residues from these fits are shown in fig.3a.
Plotted against B/T (fig. 3b) they collapse onto a single curve
which gives some confidence that the fitting procedure has
successfully separated the weak localisation term from a Zeeman
interaction term which is a function of B/T. This curve is not,
however, given by eqn.6. The solid line in fig. 3b is G(b),
fitted to the curve for larger values of B/T, with $F^{\ast}$
= 2.45 and a g-factor of 6.4. This deviates significantly from
the data at low values of B/T and the value for $g^{\ast}$ is
somewhat larger than expected. We believe this deviation is not
an artefact of the fitting procedure but rather is consistent
with the fact, noted above, that it was impossible to fit
individual data curves to a combination of equations 5 and 6.

     The most important conclusion, despite the only
qualitative agreement between theory and experiment, is the
large value of $F^{\ast}$. This implies that the interactions
are strong and that the standard theory is probably inadequate.

     Expressions for the Zeeman interaction term have also been
obtained within the framework of renormalisation group theory
by Finkel'stein \cite{finkelstein84} for b $\gg$ 1,

\begin{equation}
  \Delta \sigma_2 (B)  =  - ( e^2 / \pi h) \, 2 \,
  [\frac{1 + \gamma_2}{\gamma_2} \ln(1 + \gamma_2) - 1 ]
 \ln ( b )
\label{eq9x}
\end{equation}
and by Castellani {\it et al }
\cite{castellani84,castellani98} for b $\ll$ 1

\begin{equation}
  \Delta \sigma_2 (B)  =  - 0.084 ( e^2 / \pi h) \gamma_2  (1
+ \gamma_2) b^2 .
\label{eq10x}
\end{equation}
Here $\gamma_2$ is a measure of the renormalised interaction
strength for the triplet scattering channel. It reduces to
F$^{\ast}/2$ in the limit of weak interactions.

     The dashed lines in fig. 3b show fits using these two
equations in the high field and low field limits respectively,
using $g^{\ast}$ = 3.6 and $\gamma_2$ = 2.6 in both cases.
Interpolating between the high field and low field expressions
then gives a very reasonable description of the experimental
data. The value of $g^{\ast}$ is perhaps a little small but
this is predominantly determined by the low field quadratic
regime where experimental errors are relatively large.

     It might perhaps be argued that because eqn.5 is invalid
at high fields, in the ballistic regime, the subtraction of the
weak localisation term introduces an error and the residues
should not be attributed solely to a Zeeman term. It has been
shown, however \cite{minkov00}, that this equation provides an
adequate description of the weak localisation in this regime
but with a prefactor $\alpha$ that is less than unity. The
values of $\alpha = 0.6 - 0.7$ determined experimentally are
consistent with this interpretation and imply that the residues
can correctly be identified with the Zeeman term. Further
confirmation is provided by the fact that any spurious
contribution from the weak localisation term would not have the
observed functional dependence on B/T.

     Magnetoresistance data for sample B is shown in figure 4.
Here, again, the zero field increase of resistance with
increasing temperature in the opposite sense to that expected
for weak localisation. Over the temperature range shown the
expected lnT weak localisation term would correspond to a
decrease in resistivity of approximately 2000 ohms/square. The
negative magnetoresistance associated with weak localisation is
less well defined than in sample A, mainly because the ratio
$\tau_{\phi}/\tau$ is significantly smaller. Because of this
and because the Hall coefficient is temperature dependent (see
below) it was not possible to just fit $\rho_{xx}$ and rely on
the Hall term to cancel the classical quadratic term (eqn.7).
Rather it was necessary to explicitly determine and fit the
conductivity $\sigma_{xx}$. Shown in figure 5 (and obtained by
inverting the measured values of $\rho_{xx}$ and $\rho_{xy}$)
this is dominated by a quadratic dependence on field that is
the sum of the classical term and the low field Zeeman
interaction term (eqns. 6 or 10).

     The rather small negative magnetoresistance associated
with the weak localisation made it impossible to use the
fitting procedure developed for sample A: the equations became
ill-conditioned and gave imprecise and interdependent values of
$\alpha$ and $\tau_{\phi}$. The fit is relatively insensitive
to the exact value of $\alpha$ (see also Senz {\it et al}
\cite{senz00a}) so this was fixed (at 0.65) and just three
adjustable parameters used: $\tau$, $\tau_{\phi}$ and a
quadratic coefficient. As can be seen in figure 5 these gave
very good descriptions of the data provided the fits were
restricted to the field region where the Zeeman interaction
term is expected to vary quadratically with B. Values of
$\tau_{\phi}$ are shown in figure 2.

     Subtracting off the weak localisation and classical
mobility terms should leave the Zeeman interaction term but
there is some uncertainty about exactly how to determine the
classical term.  In practice $\sigma_0$ was obtained at each
temperature by adding the amplitude of the weak localisation
correction, ie $\alpha (e^2/\pi h) \ln (\tau_{\phi}/\tau)$, to
the measured value and then using this, with the known density,
to obtain the mobility.  This procedure was applied self-
consistently so the value of $\tau$ determined from the
mobility was also used in the weak-localisation fit. The Zeeman
interaction term obtained in this way is plotted against B/T in
figure 6.  The errors could be quite large here, for example
the classical mobility correction is approximately equal to the
Zeeman term at the highest temperatures, but the good collapse
onto a single curve suggests they are not, in fact,
significant.

     The dashed line in figure 6 shows a fit of the data to
G(b) assuming a g-factor of 3.6. In contrast to sample A
(figure 4b), the deviation away from quadratic towards
logarithmic behaviour at higher fields appears to be
adequately described by eqn. 6 and corresponds to
$F^{\ast}$ = 1.95.  Alternatively, using eqn. 10 in the
quadratic region,  $\gamma_2$ = 0.6. These values are
significantly smaller than in sample A. Taking eqn. 4 at face-
value, and assuming a weak localisation term is present, the
value of $F^{\ast}$ = 1.95 is close to the cross-over between
a net localising or delocalising lnT dependence.

     According to the standard approach an independent measure
of $F^{\ast}$ can be obtained from the temperature dependence
of the Hall coefficient. This should have a lnT dependence
given by eqns.4 and 8, ie be proportional to
$(1-3F^{\ast}/4)$.  Measurements of $R_H$ at very low fields
are complicated any small magnetic field error. Cubic fits to
$\rho_{xy}$ were made in this region and matched onto direct
measurements at higher fields \cite{footnote1}. Results are
shown in figures 7 and 8.

     In sample A the very small, non-monotonic, temperature
dependence around B=0 is of the same magnitude as the estimated
experimental errors. Over the temperature range shown $R_H$
deviates by less than 2\% from 1090 ohms/tesla, the value
corresponding to a density of 5.7$\times$10$^{11}$cm$^{-2}$
determined from the periodicity of the Shubnikov-de Haas (S-dH)
oscillations. Taken at face value this implies $F^{\ast}
\approx 1.33$, roughly a factor two smaller than the value
determined above from the Zeeman interaction term.  At higher
fields a significant field and temperature dependence develops.
Unlike the data shown in figure 3b this is not a good function
of B/T and is also a factor of roughly two smaller than
expected for $F^{\ast} \sim$ 1.3. It should be noted, in
contrast to measurements recently reported in p-GaAs
\cite{proskuryakov01}, that these corrections to the Hall
coefficient are not reflected in the Shubnikov-de Haas
oscillations. The period of these oscillations, and of the
corresponding oscillations in $\rho_{xy}$ that can be seen in
figure 7, has no significant temperature dependence.

     In sample B (figure 8) the Hall coefficient at B=0 shows
a clear lnT dependence (see inset) and is significantly
increased over the value of 5400 ohm/tesla that corresponds to
the density of 1.16$\times$10$^{11}$cm$^{-2}$ obtained from the
periodicity of the Shubnikov-de Haas oscillations . Although
less evident than in sample A, the period of these is again,
unaffected by the enhanced Hall coefficient. Using eqns. 4 and
8 the slope of the lnT dependence shown in the inset ($\Delta
R_H/R_H = -.04 \ln(T)$) corresponds to $F^{\ast}$ = 1.1.  The
approximately quadratic increase of $R_H$ with magnetic field
is again, a poor function of B/T and less than half the
expected value.

     Within RG theory eqn. 4 is modified to
\cite{finkelstein84}

\begin{equation}
\Delta \sigma_{xx}^{ee}(T) =  [4-3\frac{1+\gamma_2}{\gamma_2}
\ln(1+\gamma_2)] (e^2/ \pi h) \ln (k_B T \tau/ \hbar) .
\label{eq11x}
\end{equation}
Interpreted using eqn.8 this implies $\gamma_2$ = 0.65.

     For temperatures such that $k_B T \tau/\hbar \sim 1$ the
screening function, and therefore the Drude scattering time,
becomes temperature dependent. The corresponding temperature
dependent conductivity has been calculated by Gold and
Dolgopolov \cite{gold85} as

\begin{equation}
     \sigma(T) = \sigma(0) [1 - C_p (T/T_F)].
\label{eq12x}
\end{equation}
Similar results have also been obtained numerically by Das
Sarma \cite{dassarma86}.

     Senz {\it et al} \cite{senz00b} on the basis of the
analysis of measurements in other p-SiGe samples, have
suggested that this can account for the absence of a weak
localisation lnT term in the zero field conductivity. They
argue that such a term is in fact present but when combined
with the linear temperature dependent screening result gives an
{\it apparent} low temperature saturation of resistivity. A
similiar analysis is presented here: for samples A and B and
also for sample C (which has a density very similar to sample
B but a significantly larger peak mobility) and sample D which
has a very similar density to sample A but where the
measurements extend to a much lower temperature.

     The solid points in figure 9 show the measured
conductivities in these samples, plotted against $T/T_F$. Open
points show the result of subtracting a putative weak-
localisation correction $\alpha p (e^2/\pi h) \ln(k_B T
\tau/\hbar)$ and the lines are linear fits to the high
temperature data.  At higher temperatures the modified
results, like the raw data, all exhibit the predominantly
linear dependence predicted by eqn. 12. The coefficients C$_p$
are, however, larger than expected. With impurity and interface
roughness scattering dominating, C$_p$ for samples A and D is
expected \cite{plews97} to be 1.2 - 1.5,  compared with
experimental values of 2.5 and for samples B and C the values
of 5.0 and 6.1 shown are two to three times the expected value
of about 2. Also, in the adjusted data, there are significant
deviations from a linear dependence at the lowest temperatures.
The upturn there reflects directly the lnT divergence of the
weak localisation term subtracted from approximately constant
experimental data.

     Although in qualitative agreement with the general picture
proposed by Senz {\it et al} these results do not support their
detailed conclusions.  The data presented here cannot be
explained as just the sum of a lnT weak localisation term and
a linear temperature dependent screening term. There is either
a real saturation of the resistivity at low temperatures or if
the weak localisation lnT term is present it must be cancelled
by another lnT term of the opposite sign. Also the magnitude of
the linear term is larger than expected.

\subsection{Discussion}

     When the data presented above is analysed within the
framework of the standard theory for weakly interacting
systems many of the {\it trends} can be understood but there
are quantitative disagreements. For much of the data the
corrections are not small, as is assumed in the theory, but are
comparable to the classical Drude term. The low field
negative magnetoresistance is consistent with weak localisation
but the expected lnT dependence appears to be replaced by a
positive, approximately linear, temperature dependence. This
linear increase transforms smoothly into insulating behaviour
at the critical density, which, as in Si-MOSFETs can be
described by a scaling expression \cite{ptc97,senz99}.

     RG theories predict that in the presence of disorder the
Fermi liquid parameter $\gamma_2$ measuring the strength of the
spin fluctuations becomes temperature dependent. This leads to
a decrease in resistance with decreasing temperature that
eventually saturates at a finite value. The absence of any lnT
dependence might possibly be explained if both the weak
localisation and interaction terms were to be renormalised in
this way. The magnetoresistance of the weak localisation,
however, shows little evidence of such behaviour and appears to
be entirely conventional. For the values of $\tau_{\phi}$ shown
in figure 2 the parameter $k_B T \tau/\hbar$ varies between
about 0.02 and 0.3 in which case the dephasing should be
determined by inelastic hole-hole scattering with small
momentum transfer (sometimes known as Nyquist dephasing) and
$\tau_{\phi}$ is given by
\cite{altshuler85,senz00a,brunthaler00,altshuler82}

\begin{equation}
     \tau_{\phi} = \hbar f(g)/k_B T
\label{eq13x}
\end{equation}
where $f(g)$, with the conductance {\it g} in units of
$e^2/h$, is $g/ \ln(g/2)$ for $g \gg 1$ but of order {\it g} as
{\it g} approaches 1. These values are shown as lines with
$f(g) = 7.4$ for sample A (where $g\approx15$) and 2.6 for
sample B (where $g\approx2.6$). Experimental values of
$\tau_{\phi}$ are four to five times smaller.  A similar
discrepancy is also seen in Si-MOSFETs \cite{brunthaler00}, in
p-GaAs \cite{simmons00,proskuryakov01} and in other p-SiGe
experiments \cite{emeleus93,cheung94,senz00a}: it is not clear
whether this discrepancy is general or confined to systems with
large values of $r_s$.

     Interaction effects are clearly large. While the Zeeman
effect data in sample A does not have the expected functional
form $F^{\ast}$ is at least as large as 2.5. For sample B,
where there is a better fit to the theory,  $F^{\ast}$ is also
large. From the temperature dependence of the Hall coefficient
$F^{\ast} \sim 1.2$ in both samples, roughly a factor two
smaller than the values deduced from the Zeeman interaction
effect.

     If the standard theory is assumed to be valid for these
large values of $F^{\ast}$ the absence of a lnT term in
$\sigma_{xx}$ might perhaps be attributed to a cancellation
between a positive coefficient for the weak localisation
correction and negative coefficient for the interaction
correction with the sum, $(\alpha p + 1-\frac{3}{4} F^{\ast})$,
vanishing. While this might happen fortuitously in one sample
it seems unlikely for two samples where, according to the
Zeeman term, the values of $F^{\ast}$ are quite different. It
would not explain why, in sample A, the lnT term is absent in
both $\sigma_{xx}$, where the weak localisation is included,
and $R_H$, where it is excluded. Furthermore, in sample B the
measured lnT term in $R_H$ is of the wrong sign to cancel a
weak localisation term.

    In these samples therefore, with large values of $r_s$, the
standard weakly interacting theory provides an inconsistent and
inadequate description of the data. The coulomb interactions
are large, probably large enough to overcome weak localisation
effects and lead to a net delocalising or metallic-like
temperature dependence.  Near the critical density for the MIT
the contributions to the conductivity from disorder, weak
localisation, coulomb interactions and temperature dependent
screening effects are all important and all comparable to the
classical Drude term so it seems likely that a satisfactory
theoretical description of the data must go beyond the weakly
interacting theory and must include these effects in
combination.  A further problem is that in this dilute but
relatively clean system the disorder, as measured by $(k_f
l)^{-1}$, is large but $\tau$ is also large. Much of the
experimental data is taken in the ballistic regime (when $k_B
T \tau/\hbar \sim 1$) whereas the standard theories are
formulated in the diffusion limited regime when $k_B T
\tau/\hbar \ll 1$.

     A further {\it caveat}, appropriate to p-SiGe, should also
be noted. Spin-fluctuations play an important role in any
interaction effect theory: in p-SiGe the strong spin-orbit
coupling means the ``spins'' involved are not pure $S = \pm
1/2$ spin states, but rather a doublet of $M_J = \pm 3/2$
states. This is in contrast to situation, for example, in Si-
MOSFETs and p-GaAs where the spins are much less strongly
coupled to the orbital motion.

     Renormalisation Group theories
\cite{abrahams99,finkelstein84,castellani84,castellani98},
which have already been alluded to, consider some of these
problems. They treat, self consistently, the modification of
interactions by disorder and predict a metallic-like decrease
of resistance with temperature and a low temperature saturation
at a finite value. This is qualitatively very similar to what
is observed experimentally. The issue of ballistic rather than
diffusive motion has recently been addressed by a new theory
put forward by Zala, Narozhny and Aleiner \cite{zala01a} (ZNA)
which treats coulomb interaction effects in both these regimes
(and also  the intermediate regime where there is a cross-
over). They find, in addition to the standard lnT dependence
(cf.eqn 4 and 11.) a linear term with a slope, and even  {\it
sign}, that depends directly on the strength of the spin
fluctuations. When only the Hartree part of the interaction is
included the standard temperature dependent screening result
(eqn.12) is recovered; when the Fock part is added the linear
slope can have either sign depending on the strength of the
spin fluctuations. The lnT term also changes sign and is in
fact given by eqn. 11. That is the theory reproduces the RG
result. Because the linear term persists to T=0 an explicit lnT
behaviour is only expected to emerge at very low temperatures.

     In RG theories the renormalisation of the spin fluctuation
amplitude by disorder becomes important when {\it g}, the
dimensionless conductivity, approaches one. The ZNA theory is
only formulated for small disorder, ie {\it g} large, and does
not therefore reproduce the low temperature metallic
renormalisation predicted by the RG theories.

     In the ZNA theory the interaction strength is
characterised by the Fermi liquid parameter $F_0^{\sigma}$
describing the renormalisation of the spin susceptibility
[$\chi = \chi_0/(1+F_0^{\sigma})$] with a value of -1
corresponding to the ferromagnetic Stoner instability. It is
related to $\gamma_2$, used in RG theories, by
\cite{narozhnyprivate}

\begin{equation}
F_0^{\sigma}  =  - \gamma_2 / (1 + \gamma_2).
\label{eq14x}
\end{equation}

     In a subsequent paper Zala, Narozhny and Aleiner
\cite{zala01b} have also calculated the Hall coefficient. An
important conclusion here is that the ratio of two in eqn.8,
relating $\Delta R_H$ and $\Delta \sigma_{xx}^{ee}$, only holds
in the T=0 limit. As T increases it decreases and is typically
less than one when $k_BT\tau/\hbar$ exceeds about 0.1.

     The ZNA theory therefore advances on the ``old'' theories
in two important respects. It explicitly explains the high
temperature linear dependence of conductivity (and allows it to
be parametrised by a Fermi liquid parameter) and it provides a
quantitatively different interpretation for the temperature
dependence of the Hall data. It is of interest therefore to re-
examine the experimental data presented above using this
theory.

     Figure 10 compares  $\Delta \sigma_{xx}$, measured in
samples A and B, with the ZNA theory \cite{footnote2}. A weak
localisation term, $(e^2/\pi h) \ln(T)$, has been added to the
theoretical curves. In all cases there is an arbitary vertical
off-set, both experimentally (because $\sigma_0$ is not well
known) and theoretically (because of the ultra-violet
divergence in the lnT term). The data has therefore been
adjusted to provide a good match of the slopes.  Note also that
there is an experimental error of order 20\% in $\tau$
associated with the uncertainties in $\sigma_0$ and in the
effective mass. Values of $F_0^{\sigma}$ between about -0.55
and -0.65 (ie $\gamma_2$ between about 1.2 and 1.8) give a
satisfactory fit to the data. As shown in the insert, fits
where the weak localisation term has been excluded are somewhat
worse.

     Figure 11 shows a corresponding comparison for Hall data.
For both samples the values of  $F_0^{\sigma}$ needed to
explain the data (-0.3 to -0.5) are significantly smaller than
those obtained from the $\sigma_{xx}$ data.

     The values of $F_0^{\sigma}$ (and equivalently $\gamma_2$)
derived from the three separate experimental measurements are
summarised in Table I. They are of comparable magnitude,
corresponding to an enhancement of the spin susceptibility by
a factor of between 1.5 and 3 but are only approximately self-
consistent. It should be noted that for the Zeeman term at
least some of the measurements were made in the intermediate
temperature regime with values of $T\tau$ sufficiently large
that the RG eqns. 9 and 10 used to analyse the data probably
need to be replaced by a more general, intermediate
temperature, theory (not yet available). With this in mind the
values obtained for sample A are in quite reasonable agreement.
For sample B, however, there is a disagreement by a factor of
order two between the values obtained from the temperature
dependence of $\sigma_{xx}$ and from the Hall coefficient. This
is not understood.

     Furthermore insight is obtained by fitting the ZNA theory
to the data for samples C and D in figure 9 where the absence
of a lnT term is establish down to quite low temperatures.
Better fits (see figure 12 ) are obtained because of the low
temperature cancellation between lnT terms of opposite sign
from the weak localisation and interaction effects. At higher
temperatures, the large linear slopes are also consistent with
values of $F_0^{\sigma}$ similar to those measured in samples
A and B. For sample C, however, there are still deviations from
the theory at low temperatures which indicate this might not be
the whole story and that the low temperature RG behaviour not
contained within the ZNA theory may also play a role. It should
also be noted that for samples B and C, which have very
similiar densities but mobilities differing by a factor two,
different values of $F_0^{\sigma}$ are required to fit the
linear depenendene. This implies that $F_0^{\sigma}$ is
determined not just by the density (ie by the value of $r_s$)
but also by the degree of disorder.

\subsection{Conclusions}

     Analysis of magneto-transport data in p-SiGe samples,
where the values of $r_s$ are significantly larger than one,
has allowed the separate identification of weak localisation
and Zeeman effect terms. Attempts to fit the results using the
standard theory for quantum corrections in weakly interacting
systems fail leads to inconsistencies between the fitting
parameters. There are, however, clear indications that
interaction effects are strong.  At B=0 the lnT dependence,
expected for both weak localisation and interaction effects, is
not observed. Rather there is the large linear increase of
resistance with increasing temperature that has been attributed
to the MIT transition. The saturation of this, at low
temperatures, is consistent with predictions of RG theories.

     Analysis of the data using the recent ``intermediate
temperature'' theories of Zala {\it et al} provides a much
better explanation of the data. Values of the spin triplet
interaction parameter, $F_0^{\sigma}$ of order -0.5 explain not
only the large magnitude of the Zeeman interaction term but
also the temperature dependence of the Hall coefficient and the
magnitude of the linear temperature dependence of the
resistivity. Deviations at the lowest temperatures suggest that
there might be a renormalisation of $F_0^{\sigma}$, as
predicted by Renormalisation Group theories but not including
in the ZNA theory.

     These results support the view that the MIT type of
behaviour observed in this system for clean samples is directly
associated with the large Coulomb interactions.

\subsection{Acknowledgements}

     H. Lafontaine and R.L. Williams are thanked for growth of
the samples, Y. Feng and J. Lapointe for sample
preparation and R. Dudek for technical assistance.
Helpful discussions with S. Kravchenko, B. Narozhny and S.
Studenikin are acknowledged.

\begin{table}

\caption
{Experimental values of $F_0^{\sigma}(\gamma_2)$. $\sigma(T)$
and Hall results are from fits to the ZNA theory; Zeeman
results from fits to eqns 6 and 10.}
\begin{tabular}{cccc}

Sample  &$\sigma(T)$         &Hall         &Zeeman    \\
                                        \hline
A      &-0.55 (1.2)      &-0.45 (.85)       &-0.72 (2.6) \\ B
     &-0.65 (1.9)     &-0.35 (.55)       &-0.38 (0.6)
\end{tabular}
\label{table1}
\end{table}

\clearpage

redpajama_set_name: RedPajamaArXiv


text:
package co.redseal.gremlinnode.function;

import org.apache.tinkerpop.gremlin.util.ScriptEngineCache;
import groovy.lang.Closure;
import javax.script.ScriptEngine;
import javax.script.ScriptException;

/**
 * Create a versatile lambda from a Groovy closure.
 *
 * Based on code written by Marko A. Rodriguez (http://markorodriguez.com)
 */
public class GroovyLambda extends AbstractGlobFunction {

    private final String groovy;
    private final ScriptEngine engine;
    private final Closure closure;

    private final static String GROOVY_SCRIPT_ENGINE_NAME = "Groovy";

    public static ScriptEngine getDefaultEngine() {
        return ScriptEngineCache.get(GROOVY_SCRIPT_ENGINE_NAME);
    }

    public GroovyLambda(final String groovy) throws ScriptException {
        this(groovy, getDefaultEngine());
    }

    public GroovyLambda(final String groovy, final ScriptEngine engine) throws ScriptException {
        this.groovy = groovy;
        this.engine = engine;
        this.closure = (Closure) this.engine.eval(groovy);
    }

    public String toString() {
        return "GroovyLambda(" + groovy + ")";
    }

    // Function.apply, UnaryOperator.apply
    @Override
    public Object apply(final Object a) {
        return this.closure.call(a);
    }

    // BiFunction.apply, BinaryOperator.apply
    @Override
    public Object apply(final Object a, final Object b) {
        return this.closure.call(a, b);
    }

    // Supplier.get
    @Override
    public Object get() {
        return this.closure.call();
    }

    // Consumer.accept
    @Override
    public void accept(final Object a) {
        this.closure.call(a);
    }

    // BiConsumer.accept
    @Override
    public void accept(final Object a, final Object b) {
        this.closure.call(a, b);
    }

    // TriConsumer.accept
    @Override
    public void accept(final Object a, final Object b, final Object c) {
        this.closure.call(a, b, c);
    }

    // Predicate.test
    @Override
    public boolean test(final Object a) {
        return (boolean) this.closure.call(a);
    }

    // BiPredicate.test
    @Override
    public boolean test(final Object a, final Object b) {
        return (boolean) this.closure.call(a, b);
    }
}

redpajama_set_name: RedPajamaGithub


Your piece of Sheridan Kennedy jewellery is produced from high quality materials and hand crafted to a high standard.
When not wearing your jewellery, store it out of direct sunlight, preferably in a box or other safe place. Prolonged exposure to light may affect metal colour and cause tarnishing. Don't keep metal jewellery in damp places as this may also affect the colour.
After applying make-up, sunscreen, hair products, etc. wash hands before touching jewellery as these products will cause tarnishing.
Over time your piece will accumulate soap & dirt from skin, hand products etc.
It is recommended that to keep it looking it's sparkling best, that you clean it every month or two. Clean using mild soap (eg: dishwashing liquid) in warm water. Soak the piece for 10 mins then clean around and behind the stones, or hard-to-get-at areas, with a soft toothbrush.
Use a 'silver cloth' to keep silver clean and/or a chemical cleaning product such as 'silvo', silver dip or jewellery dip.
Jewellery cleaning clothes are also suitable for gold and stones.
Never 'dip' non-porous gems like coral, shell, turquoise, amber, bone & pearls in proprietary cleaning products, even if they are called "Jewellery cleaners".
The product may discolour or ruin porous gemstones.
Hard precious and semi-precious stones such as diamonds, rubies, emeralds, sapphires, topaz, citrine, amethyst, amazonite, agate, quartz, chalcedony and chrysophase should be fine for use in "Jewellery Dips". Always read instructions before use.
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Silver tarnishes with wear, however gold is usually OK over a period of time. If your gold discolours you can clean it using the above jewellery cleaners. However if it becomes quite dark it may be reacting to acidity in the skin. Seek advice from myself or another reputable jeweller.
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If you have a large and valuable stone, or a multitude of stones, it is recommended that you check the security of the stone's setting every few months by simply tapping or pushing with your fingernail to make sure there is no movement. This may be difficult when the stones are small so, as a rule of thumb, have the settings checked every year, especially if you wear the piece everyday.
If there is movement in any stone please notify me immediately or take to a reputable jewellery to have the settings tightened.
If not worn daily, please have your piece checked and professionally cleaned every two to three years. Notify me, or ask a reputable jeweller to check all the settings and clean.
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Despite the Aerolíneas Argentinas UK offices closing in 2012, their new UK contact number is 0871 644 4453 (at £0.13/min + your operator's access charge), with the service Flight Directors who now manage their direct sales. Give Flight Directors a call to make or amend a booking or ask any other questions about your travel arrangements.
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Aerolíneas Argentinas currently serve 58 destinations, most of them domestic in Argentina. It's likely that Aerolíneas Argentinas have flown you from Heathrow on your last holiday to Buenos Aires or Cordoba, but they also operate services to nearby nations such as Brazil, Mexico and Chile as well as further afield locations including Canada and Hong Kong.


text:
<< Week of March 20 >>
Softball vs. Oregon
Sport - Intercollegiate - Baseball/Softball | March 15 | Levine-Fricke Field
Sponsor: Cal Bears Intercollegiate Sports
Cal Softball hosts Oregon at Levine-Fricke Field.
TDPS presents The Arsonists by Max Frisch
Performing Arts - Theater | March 12	– 15, 2020 every day | Durham Studio Theater (Dwinelle Hall)
Director: Patrick Russell
In a nameless town. At an unknown time. A community is on edge as arsonists wreak havoc in the night, going door to door, setting homes ablaze. When the self-assured businessman Biedermann finds himself with the arsonists on his doorstep, will he be prepared for their cunning and coercive tactics?
Tickets required: $10–15
Ticket info: Buy tickets online
Dorrance Dance: SOUNDspace
Performing Arts - Dance | March 15 | 3-5 p.m. | Zellerbach Playhouse
With 13 tap dancers and one acoustic bass player, Michelle Dorrance's SOUNDspace strips tap dance down to its most raw basics—movement as pure music. Without the trappings of ornate set pieces or flashy costumes, the award-winning choreographer and her expert company, along with musician Gregory Richardson, explore the unique setting and acoustics of Zellerbach Playhouse in a collective... More >
Tickets required: $68 (prices subject to change)
Dorrance Dance performs SOUNDspace Friday–Sunday, March 13–15, 2020 in Zellerbach Playhouse.
Les Ballets Trockadero de Monte Carlo
Performing Arts - Dance | March 15 | 3-5 p.m. | Zellerbach Hall
The ever-popular Les Ballets Trockadero, which made its Berkeley debut in 1976, returns to Berkeley for more savagely funny satire married with seriously stunning ballet. Statuesque, glamorous male dancers in the iconic, fictional roles of prima ballerinas, the "Trocks" are an internationally adored cultural phenomenon and have performed their sophisticated form of ballet parody, en travesti, for... More >
Les Ballets Trockadero de Monte Carlo perform Saturday–Sunday, March 14–15, 2020 in Zellerbach Hall.
#MeFirst: Undemocratic Hedonism
Lecture | March 16 | 12-1:30 p.m. | Barrows Hall, MATRIX/820
Speaker: Joseph Fischel, Associate Professor, Women's, Gender & Sexuality Studies, Yale University
Sponsor: Department of Gender and Women's Studies
more details soon...
Gender & Women's Studies Department Spring 2020 Lecture Series:
"Thinking About Sexual Violence On Campus: Six Scholars, Five Programs"
These lectures are free and open to the public. Venues are wheelchair accessible. Please refrain from wearing scented products at these events. If you require an accommodation for effective communication (ASL interpreting/CART... More >
Expanded Internet Art
Lecture | March 16 | 12:30-2 p.m. | Moffitt Undergraduate Library, 340 (BCNM Commons)
Speaker/Performer: Ceci Moss
Sponsor: Berkeley Center for New Media
In this talk, author Dr. Ceci Moss discusses her new book "Expanded Internet Art: Twenty-First-Century Artistic Practice and the Informational Milieu" (New York: Bloomsbury, 2019). The publication is the first comprehensive art historical study of "expanded" internet art practices. Charting the rise of a multidisciplinary approach to online artistic practice in the past decade, the text discusses... More >
Seminar 231, Public Finance: Topic Forthcoming
Seminar | March 16 | 2-4 p.m. | 648 Evans Hall
Speakers: Felipe Lobel; Nina Roussille
Sponsor: Robert D. Burch Center for Tax Policy and Public Finance
Johanna Nichols
Colloquium | March 16 | 3:10-5 p.m. | 370 Dwinelle Hall
Speaker/Performer: Johanna Nichols, University of California, Berkeley
Sponsor: Department of Linguistics
Seminar 271, Development: Tba
Seminar | March 16 | 4-5:30 p.m. | 648 Evans Hall
Speaker/Performer: Seema Jayachandran, Northwestern
Joint with Stanford Development Seminar, hosted by Berkeley.
Post-Baccalaureate Health Professions Program
Information Session | March 16 | 6-7:30 p.m. | 208 UC Berkeley Extension (Golden Bear Center)
Gain academic preparation in the sciences along with personalized advising to enhance your application to medical, dental or veterinary school, as well as to advanced degree programs in medical- and health-related fields.
Danez Smith and Patricia Smith
Lecture | March 16 | 6:30-8 p.m. | Berkeley Art Museum and Pacific Film Archive
Speakers/Performers: Danez Smith; Patricia Smith
Sponsors: Arts + Design, Arts Research Center
Presented as part of the Poetry and the Senses program at UC Berkeley's Arts Research Center, in partnership with Engaging the Senses Foundation.
Danez Smith, Poet, Writer, Performer
Patricia Smith, Poet, Author
Join us for an evening of fierce readings and conversation with renowned poets Danez Smith and Patricia Smith. The author of Don't Call Us Dead, Danez Smith is a black, queer, poz... More >
Special Event | January 21	– December 15, 2020 the third Tuesday of the month every month | UC Botanical Garden
-Why is the Garden Closed two days a month?
For the safety of the public and the safety of the collection, the Garden's Horticultural staff need two days per month to complete jobs that may pose safety risks to visitors, such as dropping tree limbs, renovating paths, or controlling pests.
-I'm only in Berkeley for one day... More >
Harnessing RNA regulation to direct protein evolution and control mammalian gene expression
Seminar | March 17 | 11 a.m.-12 p.m. | 120 Latimer Hall
Featured Speaker: Bryan Dickinson, Department of Chemistry, University of Chicago
I will present two recent technologies our group has developed that harness RNA regulation – one for basic science purposes and one for therapeutic development. First, I will describe new methods that use our RNA polymerase-based biosensors to harness evolution in order to probe the emergence of "selectivity" between biomolecular interfaces, in particular, protein-protein interactions (PPIs).... More >
Seminar 217, Risk Management: Topic Forthcoming
Seminar | March 17 | 11 a.m.-12:30 p.m. | 1011 Evans Hall
Speaker/Performer: Aaron Zhou, UCSB
Sponsor: Consortium for Data Analytics in Risk
Labor Lunch Seminar: "Topic Forthcoming"
Seminar | March 17 | 11 a.m.-12 p.m. | 648 Evans Hall
Speaker: Jonathan Holmes, UCB
Sponsor: Center for Labor Economics
European Disintegration? The Politics of Crisis in the European Union
Lecture | March 17 | 12-1 p.m. | 201 Moses Hall
Speaker/Performer: Douglas Webber
Sponsor: Institute of European Studies
The Eurozone, Ukraine, refugees and Brexit – the European Union has had to confront and manage several major crises during the last decade. However, the outcomes of these crises in respect of political integration have been divergent. The Eurozone has become politically more closely integrated. The Ukraine crisis has not produced any significant effect one way or the other. In contrast, the... More >
Douglas Webber
Authors Meet Critics - Black in Place: The Spatial Aesthetics of Race in a Post-Chocolate City
Panel Discussion | March 17 | 12-1:30 p.m. | Barrows Hall
Panelist/Discussants: Brandi Thompson Summers, Assistant Professor, Department of Geography; Nikki Jones, Professor, Department of African American Studies
Sponsor: Social Science Matrix
Join us on March 17 as Thompson Summers will discuss the book, Black in Place: The Spatial Aesthetics of Race in a Post-Chocolate City,with Nikki Jones, Professor in the Department of African American Studies at UC Berkeley.
RSVP recommended
RSVP info: RSVP online
Abigail Weitzman: A Demography Brown Bag Talk: Title TBA
Colloquium | March 17 | 12-1 p.m. | 2232 Piedmont, Seminar Room
Speaker: Abigail Weitzman, Professor, Sociology, University of Texas at Austin
A lunch time talk and discussion session, featuring visiting and local scholars presenting their research on a wide range of topics of interest to demography.
LinkedIn II: Maximize Your Online Professional Presence
Workshop | March 17 | 12-1 p.m. | 198 University Hall
Make sure your LinkedIn profile is serving you by understanding what your readers look for. This hands-on workshop is a chance to incorporate tips from a UC Berkeley recruiter. We encourage you to bring a laptop, tablet or smart phone.
Seminar 237, Macroeconomics
Speaker: Steve Davis, Professor, The University of Chicago Booth School of Business
Seminar 218, Psychology and Economics: Identification of Time-Inconsistent Preferences
Speaker/Performer: Aprajit Mahajan, UC Berkeley
Seminar | March 17 | 4-5 p.m. | 120 Latimer Hall
Featured Speaker: Kevin Wilson, Berkeley Lab
Knowing the Land: Indigenous Strategies for Revitalization and Adaptation
Colloquium | March 17 | 4-5:30 p.m. | Shorb House, Latinx Research Center
Location: 2547 Channing Way, Berkeley, CA 94720
Featured Speaker: Clint Carroll, Associate Professor of Ethnic Studies, University of Colorado, Boulder
Sponsors: Center for Native American Issues Research on, Native American Studies, American Indian Graduate Student Association, American Indian Graduate Program, Native American Student Development, Dept. of Environmental Science, Policy, and Mgmt. (ESPM)
Indigenous Nations face significant challenges when it comes to the interrelated processes of cultural knowledge revitalization/perpetuation and environmental adaptation. These challenges range from compromised local ecological health brought about by development and climate change, to limited access to land due to legal, social, and/or political barriers, and to obstacles to knowledge... More >
Talk by UC Berkeley psychologist, Prof. Mahesh Srinivasan: Title TBD
Lecture | March 17 | 5-7 p.m. | Stephens Hall, 10 (ISAS Conf. Room)
Speaker: Mahesh Srinivasan, Associate Professor, Department of Psychology; member, Cognitive Science Faculty, University of California, Berkeley. Previously, I was a post-doctoral researcher in the Department of Psychology at the University of Californ
Sponsors: Institute for South Asia Studies, Sarah Kailath Chair of India Studies
A talk by UC Berkeley psychologist, Prof. Mahesh Srinivasan.
Earl Howard
Performing Arts - Music | March 17 | 8-10 p.m. | McEnerney Hall (1750 Arch St.)
Sponsor: CNMAT
Earl Howard is a composer, performer and improviser on saxophones and electronics. His method of creating orchestrated sounds with electronics and processing live improvisation creates unique, densely layered textures. He received a Guggenheim Fellowship to create "Superstrings" (2011), a Regents Fellowship at UCSD, three NYFA Fellowships, as well as Harvard's Fromm Foundation Commission. His CDs... More >
Tickets: $10 General, $5 Students and seniors
Neuroscience Student Seminar Series
Seminar | March 18 | UC Berkeley Campus
Featured Speaker: Jennifer Lippincott-Schwartz, HHMI Janelia Farms
Sponsor: Department of Molecular and Cell Biology
Identifying and Addressing Workplace Bullying
Course | March 18 | 9 a.m.-3 p.m. | 24 University Hall
Sponsor: Staff Ombuds Office
Bullying can take many forms, some of which are obvious and others of which, though more indirect, can be equally destructive to working relationships. Participants will learn about how to recognize bullying behavior; how to distinguish bullying from incivility; what climates encourage bullying; the impact of workplace bullying; options for how bystanders can effectively respond; and constructive... More >
NASA Berkeley Aviation Data Science Seminar
Lecture | January 22	– May 6, 2020 every Wednesday | 11 a.m.-12 p.m. | 106 Stanley Hall
Sponsors: Berkeley Institute for Data Science, UAM@Berkeley, Berkeley Institute of Transportation Studies
The NASA Berkeley Aviation Data Science Seminar Series, launched in spring 2020, is held weekly on Wednesdays in Stanley 106, at 11:00 AM - 12:00 PM, from January 22 through May 6.
Noon Concert Series: Flute and Piano
Performing Arts - Music | March 18 | 12 p.m. | Hertz Concert Hall
Ginevra Petrucci, flute
Jory Vinikour, piano
Since 1953 the Noon Concert Series has featured a variety of performance from Music students, faculty, and guest musicians.
11:55 - Doors Open
12:15 - Start
Atlas of (Remote) Islands and Sea Level Rise
Speaker/Performer: Christina Gerhardt
In "Let Them Drown," the 2016 London Edward W. Said lecture, Naomi Klein called attention, as Rob Nixon's "Slow Violence and the Environmentalism of the Poor" had done, to the nexus of climate change, (colonial) racism and poverty. But she shifted the spotlight onto the oft-overlooked low-lying island nations. Their current day situation is dire. In her new book project, "Atlas of (Remote)... More >
Christina Gerhardt
The Signum Vortumni Project: Excavations at the Horrea Agrippiana in the Roman Forum (2016-2019)
Lecture | March 18 | 12-1 p.m. | 101 2251 College (Archaeological Research Facility)
Speaker: Matthew J. Mandich, Field School Director, The International Society for Archaeology, Art and Architecture of Rome
In 2016, the International Society for the Archaeology, Art and Architecture of Rome (ISAR) was granted an official excavation concession by the Ministero dei Beni e delle Attività Culturali (MiBAC) for the Signum Vortumni Project. The aim of this project is to uncover and reconstruct the pre-Imperial topography of this important area in the monumental center.
Social Event | January 22	– May 6, 2020 every Wednesday | 3-4 p.m. | Windmill Coffee House
Department of Nutritional Sciences and Toxicology Seminar: Identification and analysis of heart regeneration enhancers in the zebrafish
Seminar | March 18 | 4-5 p.m. | 114 Morgan Hall
Speaker: Brian Black, UCSF
Sponsor: Nutritional Sciences and Toxicology
Nomadic Identity: The Development of a Multiethnic Empire in Mongolia
Lecture | March 18 | 5-7 p.m. | 180 Doe Library
Speaker/Performer: Christine Lee, California State University, Los Angeles
Sponsor: Tang Center for Silk Road Studies
The nomadic states in Mongolia developed their own definitions of ethnicity and citizenship independently from the settled populations of China. Here, nomads and agriculturalists have lived in the same communities for thousands of years. While the ruling nobility was one specific ethnicity, there was not a clear hierarchy of ethnicities. Mongolia has experienced the migration and incorporation of... More >
Joyce Carol Oates: In Conversation on the Art of Writing
Lecture | March 18 | 5 p.m. | Doe Library, Morrison Reading Room
Joyce Carol Oates, author of over seventy works of fiction, nonfiction, and poetry, is the Roger S. Berlind '52 Professor Emerita of the Humanities at Princeton University and has taught as a visiting professor of English at UC Berkeley. She is a recipient of the National Humanities Medal, the Carl Sandburg Award for Lifetime Achievement, and the Jerusalem Prize.
The author's oeuvre confronts... More >
Attendance restrictions: Seating is on a first-come, first-served basis.
Workshop | January 15	– December 16, 2020 every Wednesday | 6:15-7:30 p.m. | 3111 Etcheverry Hall
Find out more at toastmasters.org or just drop by one of our meetings to get started.
Toastmasters on Campus has earned Toastmasters' highest honor, the... More >
Spring Equinox Sound Bath
Special Event | March 19 | 10:30-11:30 a.m. | UC Botanical Garden
Celebrate the first day of spring with this special concert of quartz crystal singing bowls and finely tuned gongs surrounded by redwood warmth. Close your eyes and experience the natural meditative quality of being in nature layered with serene sounds of quartz crystal singing bowls.
These unique instruments slow down your brainwaves to meditative-like states through a process called... More >
Registration required: $25 Adult / $20 Adult Member
Registration info: Register online or by calling 510-664-7606
Food Justice and Belonging: A Demonstration and Conversation
Lecture | March 19 | 12-1:30 p.m. | Berkeley Art Museum and Pacific Film Archive
Speaker/Performer: Bryant Terry
Bryant Terry, Chef, Educator, Author
Join us for a presentation by Bryant Terry, a James Beard Award–winning chef, educator, and author renowned for his activism to create a healthy, just, and sustainable food system. Terry is the author of the acclaimed books Vegetable Kingdom, Afro-Vegan, and Vegan Soul Kitchen: Fresh, Healthy, and Creative African-American Cuisine. Since 2015 he has been... More >
Oliver E. Williamson Seminar
Seminar | March 19 | 12-1:30 p.m. | 325 Cheit Hall
Speaker: Molly Schnell, Assistant Professor, Northwestern
Sponsor: Haas School of Business
The Oliver E. Williamson Seminar on Institutional Analysis, named after our esteemed colleague who founded the seminar, features current research by faculty, from UCB and elsewhere, and by advanced doctoral students. The research investigates governance and its links with economic and political forces. Markets, hierarchies, hybrids, and the supporting institutions of law and politics all come... More >
Mindful Awareness: Guided Meditations
Miscellaneous | February 6	– April 30, 2020 every Thursday | 12-1 p.m. | 5400 Berkeley Way West
Moderator: Jeffrey Oxendine
Focus the mind. Foster creativity, resilience, and well-being. These meetings are free and open to faculty, staff, and students. All are welcome to drop in on Thursdays at noon throughout the spring semester.
IB Seminar: Title to be announced
Seminar | March 19 | 12:30-1:30 p.m. | 2040 Valley Life Sciences Building
Featured Speaker: James Doyle, University of California, Davis
Sponsor: Department of Integrative Biology
BPM 205 Delegation Skills
Workshop | March 19 | 12:30-4:30 p.m. | 24 University Hall
This workshop is for UC Berkeley Staff. The content covers planning and preparing to delegate a task or project, communicating effectively when delegating, and planning for follow-up to ensure successful task or project completion.
Women's Tennis vs. Pepperdine
Sport - Intercollegiate - Tennis | March 19 | 1:30 p.m. | Hellman Tennis Center
Cal Women's Tennis hosts Pepperdine at Hellman Tennis Complex.
Seminar 251: "Topic Forthcoming"
Native American Graves Protection and Repatriation Act: CRG Thursday Forum Series
Panel Discussion | March 19 | 4-5:30 p.m. | 691 Barrows Hall
Speaker: Megon Noble
Sponsor: Center for Race and Gender
Megon Noble, NAGPRA Project Manager at UC Davis will discuss the work of the campus's NAGPRA Advisory Committee.
Talk by curator of Southeast Asian Art, Patrick Flores: Title TBD
Speaker: Patrick D. Flores, Professor of Art Studies at the Department of Art Studies at the University of the Philippines; Curator of the Vargas Museum in Manila; Adjunct Curator at the National Art Gallery, Singapore
Sponsors: Institute for South Asia Studies, Sarah Kailath Chair of India Studies, South Asia Art Initiative, Department of History of Art
A talk by the eminent Manila-based academic, curator, and art historian, Patrick D. Flores.
Career Connections: Esports and Gaming Industries
Social Event | March 19 | 6-8 p.m. | Career Center (2440 Bancroft Way), Blue and Gold Room
Sponsors: Cal Alumni Association, Career Center
Seeking dynamic alumni and other profess
ionals who work within the Esports and Gaming industries. Because this event is focused on career exploration, we encourage diversity in the career paths represented: from software to graphic design, marketing, sales, testing, writing, professional gaming, and much more!
'Information and Uncertainty in Data Science' Discussion Forum
Meeting | January 24	– May 1, 2020 every other Friday | 11 a.m.-12 p.m. | 190B Doe Library
The 'Information and Uncertainty in Data Science' Discussion Forum is held biweekly on Fridays in 190B Doe. All interested members of the UC Berkeley, UCSF, LBL and LLNL communities are welcome and encouraged to attend.
Women's Tennis vs. Hawai'i
Cal Women's Tennis hosts Hawai'i at Hellman Tennis Complex.
Composition Colloquium: Pauline Kim Harris
Colloquium | March 20 | 3 p.m. | 250 Morrison Hall
Composer Pauline Kim Harris will talk about her compositions in which she considers the unique and individual experience of the perception of time.
Pauline Kim Harris, aka PK or Pauline Kim is a GrammyTM- nominated violinist and composer. The youngest student to have ever been accepted into the studio of legendary violinist Jascha Heifetz, she has since appeared... More >
The Summit: The Manhattan Transfer Meets Take 6
Performing Arts - Music | March 20 | 8-10 p.m. | Zellerbach Hall
With 10 voices and 20 Grammy Awards between them, the Manhattan Transfer and male gospel ensemble Take 6 come together for a program that features the groups singing separately and together—both a cappella and backed by a live band. The program includes favorites like "Operator," "Birdland," "Boy From New York City," and "Route 66," plus music by Ray Charles and Stevie Wonder, songs from the... More >
Tickets: $36–$96 (prices subject to change)
The Manhattan Transfer Meets Take 6 performs The Summit Friday, March 20, 2020 in Zellerbach Hall.
Exhibits and Ongoing Events
The Languages of Berkeley: An Online Exhibition
Exhibit - Multimedia | September 1, 2019	– August 31, 2020 every day | Free Speech Movement Cafe (Moffitt Library)
Sponsors: Library, Berkeley Language Center
Celebrates the magnificent diversity of languages that advance research, teaching, and learning at the University of California, Berkeley. It is the point of embarkation for an exciting sequential exhibit that will build on one post per week, showcasing an array of digitized works in the original language chosen by those who work with these languages on a daily basis - librarians, professors,... More >
Languages of Berkeley
The Languages of Berkeley
Photographs by Ken Light: American Stories
Exhibit - Photography | January 13	– May 15, 2020 every Monday, Tuesday, Wednesday, Thursday & Friday | 9 a.m.-4 p.m. | Stephens Hall, 220 Stephens
In an exhibition of selected works from the past five decades, documentary photographer Ken Light probes social and political issues in America.
Attendance restrictions: Viewing hours are Monday-Friday during the academic year. The exhibit is located in a space also used for events. Please call (510) 643-9670 or email townsendcenter@berkeley.edu for viewing times.
Object Lessons: The Egyptian Collections of the University of California, Berkeley
Exhibit - Artifacts | November 11, 2019	– May 22, 2020 every Monday, Tuesday, Wednesday, Thursday & Friday with exceptions | 10 a.m.-4 p.m. | Bancroft Library, Gallery and Corridor
Sponsors: Friends of The Bancroft Library, Bancroft Library, Phoebe A. Hearst Museum of Anthropology
Object Lessons brings together ancient and modern Egyptian artifacts from the Center for the Tebtunis Papyri and the Phoebe A. Hearst Museum of Anthropology in an exhibition in The Bancroft Library Gallery and Corridor. In the gallery, we invite you to explore how items from everyday life were created and discarded, excavated and conserved, from antiquity to the present day. The corridor... More >
Photograph of Arthur Hunt, EES GR.NEG.056

redpajama_set_name: RedPajamaCommonCrawl


It's the foundation for everything you do on offense.
If you can't handle the ball, you can't move the ball.
If you can't move the ball, you won't get open shots.
And if don't get open shots... well... you're in big trouble.
They're packed with fundamental ballhandling drills that will immediately boost your team's offensive skill level. Starting tonight.
Best part: we've done the hard work for you. And created six ballhandling-focused practice sessions you can take right to the court.
With this easy-to-use resource, it takes just 30 seconds to prepare an amazing ballhandling-themed practice, packed with skill-building drills your players will LOVE.
Inside, you get instant access to 16 simple drills to build a better handle.
All organized into six printable practice plans you can take right to the gym.
So no matter how busy you are, you can run a KILLER basketball practice that rapidly improves your team's dribbling skills... starting tonight!
We've broken down all the key ballhandling fundamentals your players need to learn - from control dribbling, to power dribbling, speed dribbling, crossovers, pullbacks, 1 on 1 moves and more.
Each drill is featured on a one-page mini-poster, including simple, step by step instructions, diagrams, and full-color illustrations. So they're easy to understand... and easy to teach to your kids!
Your package also includes six minute by minute practice plans, complete with illustrations and time blocks to keep you on track.
Each practice is focused on dribbling fundamentals. Designed to teach your kids the most essential ballhandling skills, and immediately boost your in-game performance.
Just print out the plan (or save it to your phone), head to the court, and get ready to run a killer practice!
Plus, Get This Free Bonus "Cheat Sheet"
This simple 1-page printout is a perfect addition to your coaching binder.
It breaks down the 4 key dribbling techniques with illustrations and simple instructions. A perfect handout for your kids or assistant coaches.
We're so confident in these basketball practice plans that we're going to put our money (and reputation) on the line.
Nope. Just balls and a hoop. You can use cones to help mark out positions on the court, but they're not mandatory.
Showed me which fundamentals to work on at every practice, and how to incorporate new concepts. For inexperienced coaches, it's a good introductory how to. And it has good info for the more experienced coach looking for new ideas.
With your help, I coached my 6th grade elementary team to an undefeated season (11-0) and winning the Elk Grove Unified School District Basketball Championship. We defeated every opponent by 15 points or more, averaged 54 points per game & our opponents averaged only 31 points per game against us.
Hurry... Get Print n' Go Basketball Practice Plans - Ballhandling Fundamentals Now!


Episode #27 – The Gods War – Your Table's On Fire!
The world is coming to an end, and will soon be reborn. But in whose image will the recreation occur? There is only one way to find out: this week's episode. We speak with legendary game designer Sandy Petersen, the founder of Petersen Games, and the creator of the upcoming epic big-box war game, Glorantha: The Gods War.
During our discussion, we chat about why you should never design a game around a theme you don't respect, the differences between designing for tabletop versus video games, and why you should never design a game for "the masses". We play the Game Design Challenge and create a horrific tale of escaping from deadites in an airport.
You can also connect with Petersen Games on their website, Twitter, Facebook, Youtube and Google+.
I got a kick out of Sandy mentioning "The Langoliers" movie. It was based off a short story in one of Stephen King's collected works titled "Half Passed Midnight". A great read!
And I really liked Sandy's idea for an airport themed game. You can never have too many Zombies!


text:
Man, dog killed when ACE train, truck collide
Jake Armstrong
TRACY - A Chowchilla man and his dog were killed at 4:45 a.m. Monday when the man drove his truck through a railroad crossing arm on Kasson Road and into the path of an Altamont Commuter Express train speeding by at 70 mph, the California Highway Patrol said.
Paul Jackson, 50, and his dog where found dead inside the 2003 Ford Ranger about 1,000 feet from the railroad crossing, which is near the entrance to Deuel Vocational Institution, Officer Robert Rickman said.
Jackson's death marked the commuter train line's third human fatality since service began nearly 10 years ago.
An elderly woman walking on the tracks in Livermore was struck and killed by a train in October 2001, and a Tracy man died in June 2006 after he drove around a crossing arm and into the train's path in Tracy.
"It's obviously a pretty good statistic but nonetheless tragic," ACE spokesman Thomas Reeves said.
Along the same section of tracks where Monday's crash occurred, an ACE train carrying about 205 passengers in August hit four or five cows that had wandered away from a holding pen at DVI and onto the Union Pacific Railroad tracks about a mile north of the prison. That crash was part of an incident in which 28 of a herd of 59 cows were killed in various traffic accidents after their escape.
Why Jackson's truck stopped on the tracks Monday is under investigation, Rickman said.
Both crossing arms were down as the train approached, Rickman said. But the train's engineer reported that Jackson accelerated through the barrier on the southbound side of Kasson Road and came to a stop on the tracks, Rickman said.
The engineer sounded a warning before slamming into the truck's driver's side door. Jackson was pronounced dead at the scene.
None of the 223 passengers on the train or its crew were injured, Reeves said.
Early morning trains were delayed, but service returned to its regular schedule by 9 a.m., Reeves said.
ACE trains have clearance to travel up to 70 mph in the crash area, Reeves said.
Contact reporter Jake Armstrong at (209) 239-3368 or jarmstrong@recordnet.com.


These portraits are from my MFA Thesis Show in June of 2013. The series is entitled "Lo Que No Se Puede Ver" meaning that which cannot be seen. It is both a comment and critique on the practice of racial profiling mandated by controversial legislation such as Arizona's State Senate Bill 1070, which requires local law enforcement agencies to aid in immigration enforcement by requesting documentation papers based on "reasonable suspicion" during any "lawful contact" with a police officer. Laws such as this have led to an increased criminalization of the immigrant who has come to the United States from Mexico and other South American countries regardless of their particular situation. These 10 portraits are paintings of friends and family, both young and old, rich and poor, documented and undocumented immigrants, naturalized and birthright citizens, all deserving of basic human rights and dignity. You cannot merely say let's deport all 12 million or so of the undocumented immigrants who are living and working in the US today. That is not a solution. You cannot terrorize an entire segment of society and treat them as second-class citizens. My intention with this series is to put a face to the "problem" of immigration. To highlight contributions made by immigrants whether it be as artists, engineers, doctors, or merely responsible taxpaying mothers and fathers of 4. Each portrait is hung at the actual height of the model, resembling a police line up in order to convey the perceived criminalization by exterior forces. I chose to use vibrant colors in each portrait to depict the life and soul of each of my models.


Is it necessary to take malaria pills when travelling in South India?
Sources seem to differ on what precautions are required. Is there an authoritative source I can check, or is it better to drug-up anyway (or not to)?
Malaria is transmitted by a specific type of mosquito (female anopheles) that breeds in still / stagnant water that collects after monsoons. If you're travelling during winter or summer in India, you don't have to worry about this too much as the weather conditions are not conducive for these specific mosquitoes to breed. Locals usually don't take malaria pills, instead preferring to sleep in mosquito nets that will prevent you from getting bitten regardless of what type of mosquito it is. Most mosquitoes you'll get bitten by (and you will) are harmless.
While most travellers going to take precautions against malaria, another mosquito vector-borne disease that is common in India is dengue. Compared to malaria, dengue is a bigger threat as it's harder to 'prevent'; there are no pills or vaccinations for it. Like malaria, this is also transmitted by a specific kind of mosquito (aedes aegypti) locally known as 'tiger mosquito' as it has yellow-striped bands on its legs. If you see such a mosquito, then you know to be extra careful.
City and town authorities take disease control seriously and frequent fumigation is carried out during monsoon season; you will be fairly safe when if you're stick mostly to cities when travelling. It helps to keep an eye on local newspapers if you're travelling for longer periods for news about dengue outbreaks. Take extra precaution when you're staying near places with stagnant pools of water, such as the nature reserves, backwater lagoons et al.
Long story short: Sleep in a mosquito net, or burn a 'mosquito coil' (ask for it at any convenience store; it burns slowly and releases smoke fumes that keep mosquitoes away. Handier to carry around than a net, but fragile so no point buying in bulk as they will break when packed in bags). It will keep you safe from malaria/dengue-carrying mosquitoes and every other kind.
Most government health organizations recommend that chemoprophylaxis when traveling to an area where malaria is endemic (which includes South India). However, you should do whatever makes you comfortable - ideally after discussing it with a travel doctor. When I was in Delhi, it was primarily during winter and my travel doctor told me that for that area at that time of year, it really wasn't necessary for me to take anti-malaria pills because there was virtually no risk of contracting malaria then.
Malaria season is whenever there are mosquitos - basically, when it's warm/hot and there is water around. Monsoon season is the highest-risk time for malaria, typically May - October. I was in India from January - May and only took Malarone for about less than half that time (middle of March through the end of my trip in May).
Depends on where you are planning to go, and when. If you are travelling to cities, you should be safe. In most urban areas, people are at a very low risk due to Malaria. Most cities have some kind of mosquito-control programme. If you are travelling to the hills, forests, natural reserves, and especially during the monsoons, which is when mosquitoes breed the most, it wouldn't hurt to carry a mosquito-repellent cream with you.
Many travellers I know (who went to Africa) do not use profylactic antimalarials (like Lariam) because of the harsh side effects. They have some medicine to take AFTER the get malaria, and usualy travel in dry season only. Moreover, I heard that you can use herbal tea from (I guess) Artemisia annua as a prevention!
If you hate to use chemical repellents like I do, you can use Citronella oil, but you have to apply it more often than chemical repellents.
I advise against taking anything. The side-effects can be harsh, in fact I wasn't able to enjoy my trip until I got rid of the medication. Furthermore, especially in India, you're traveling from city to city so the chances for a malaria mosquito finding you are really low. You're much more likely to be hit by a car, suffer from too much heat or get an intoxication by street fumes.
Just use the usual precautions, especially a repellent. Don't buy into anything anyone recommends, find out what reacts well with your own body. When you've found your repellent, you'll realize that the mosquitoes stay away ;).
Malaria is a serious and sometimes fatal disease transmitted by mosquitoes. The risks to health whilst travelling will vary between individuals and many issues need to be taken into account, e.g. activities abroad, length of stay and general health of the traveller. So it is recommended that you consult with your General Practitioner or Practice Nurse 6-8 weeks in advance of travel. They will assess your particular health risks before recommending vaccines and /or antimalarial tablets.
The risk is highest in north-eastern states including Assam and Orissa. It may be considered for certain groups who may be at higher risk e.g. longer stay in rural areas, visiting friends or relatives, those with medical conditions, immunosuppression or those without a spleen.
For further information about Malaria precautions and for full list of the highest risk area list, check the official NHS site (Fit for travel).
Please note that Mefloquine (anti-malarial drug) since its introduction, it has been directly linked to serious adverse effects, including depression, anxiety, panic attacks, confusion, hallucinations, bizarre dreams, nausea, vomiting, sores and homicidal and suicidal thoughts. Therefore Malarone has the fewest reported side effects and it's which is much more recommended in preventing and treating malaria.
Malaria Travel Health Advice at Fit For Travel (NHS) including country specific malaria information and malaria maps.
Malaria and Travelers at Centers for Disease Control and Prevention (CDC) to find out whether malaria is a problem in the country where you will be traveling.
I have lived in a town the middle of South India for years. There are hundreds of foreigners living in my town. There are also thousands visiting each year. I've never heard of anyone taking malaria pills. Nor have I heard of even a single case of Malaria in this area. This is just some personal experience.
Not the answer you're looking for? Browse other questions tagged india health south-india or ask your own question.
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Malaria pills needed for jungle trip in Chiang Mai?
Is it necessary to take Malaria medication in Laos?
Travelling to Latin America to take hallucinogenic drugs: how does one do it safely?
I am traveling to Delhi, Aizawl and Mizoram in December. Is it necessary to take anti-malaria pills during this time of year?


text:
University Information Services
Hostmaster
IP Register
Table structure
ANAMEs for ACLs
MWS3 API
Version numbers
Bare domains
Mail records
Off-site servers
Special records
CUDN private
General outline
SQL DDL
Perl CGI
Long-form aliases
Managed Zone Service
ac.uk domains
Reverse DNS for 10.0.0.0/9
Consolidated reverse DNS
Signed zones
Authoritative
DNS blocks
DNSSEC implications
Policy considerations
RPZ in IP Register
Encrypted DNS
Stealth secondaries
DNSSEC validation
Testing DNSSEC validation
Reshuffle 2018
Relieving the IP address shortage
This document originally dates from 2002, when we started using CUDN-wide private RFC 1918 IP addresses.
The IP address allocation agencies have put in place policies to make good use of the comparatively small amount of IP address space that currently remains unallocated. This is in contrast to the previous more liberal policies. This new regime, coupled with the fact that the addresses administered by the Computing Service are becoming exhausted, is forcing the Computing Service to apply a more stringent regime to the use of IP addresses within the University. The current position is not as dire as it might have been as the Computer Laboratory have loaned a large chunk of their address space to the Computing Service. Nevertheless, it is still necessary to take measures such as those described below to economise on the use of address space.
The Service has been following various strategies to avoid running out of addresses:
Where feasible, it is using 'private addresses' for internal address allocations.
It is retrieving unused blocks of addresses from University institutions to which it has made earlier allocations.
It is allocating IPv4 addresses in typically much smaller blocks than before.
Requested action by institutions
The Computing Service seeks the cooperation of all institutions in the following.
Recovery of spare addresses
It is essential that all institutions to which the Computing Service has made IP address allocations review their use of those addresses, conducting garbage collection and compaction (i.e. changing addresses so that a contiguous set of addresses can be freed), and to return unused addresses to the Computing Service, in groups of contiguous addresses. This needs to be an ongoing activity and needs to be started as soon as possible. The Computing Service is able to provide information to institutions about which of the addresses used by the institution have been seen in use across the CUDN.
Use CUDN-wide private addresses for devices that are local to Cambridge
Where institutions use IP addresses allocated to them out of the University's global address range for devices that need to be visible across the University and Colleges but need not be visible outside Cambridge, they should consult Network Support (network-support@ucs.cam.ac.uk) with a view to using CUDN-wide private addresses as described in 'Cambridge IP address ranges'. The Computing Service's IP Register and DNS mechanisms are able to handle CUDN-wide private addresses. Additionally, CUDN-wide private addresses should be used by institutions without their own routing capability for devices that are local to the institution, such as printers, network hubs and switches. This substitution of CUDN-wide private addresses for global IP addresses is straightforward.
Institutions may also be able to economise on their use of global IP address by using CUDN-wide private addresses for computers whose internet access is always made via a proxy-server located in the University. In this context, institutions should consider carefully whether it is absolutely necessary to allocate a unique global IP address to every undergraduate machine. Moreover, institutions should note that certain network applications (e.g. streaming audio) might not function for computers using CUDN-wide private addresses.
Use 'institutional private addresses' for devices that are purely local
If an institution has its own routing capability (a router or routing firewall), it could use institutional private IP addresses, as described in 'Cambridge IP address ranges', for all those devices that need to be visible only within the institution (printers, hubs and switches are common examples).
Institutions might also consider using institutional private addresses, NAT and, possibly, DHCP for devices not requiring the unfettered use of the full range of internet protocols. This has been done by several Colleges for student connections - other colleges may wish to follow suit. However, it should be noted that the limitations of this approach may prove to be too restrictive and the requirements of firewalls and network address translation for logging use of dynamically allocated IP address too burdensome in practice. Before deciding to do this, institutions should contact Network Support for the latest information.
It is important that institutions do not use the other private address ranges (described in the 'Cambridge IP address ranges' document as "reserved" and "CUDN-wide private" addresses) for this purpose.
Institutions also need to be aware that use of private addresses, whether CUDN-wide or institutional private addresses, may need to be coordinated with other uses of private addresses by any networks directly connected to the institution's network. For example, such use might occur by a member of the institution connecting their home network to the institution's network.
Provided by Cambridge University Information Services
Contact: ip-register@uis.cam.ac.uk
This page updated: 2018-11-21 15:26:27


Kimbra's blog about mindfulness and online art course. Multi-tasking or Uni-tasking?
As I was bustling about this morning, attending to household chores with one ear on the radio, I heard snippets of an interview about multi-tasking. I can remember a time, perhaps in the driven eighties and nineties when multi-tasking was considered a good thing, admirable even!
There's a new phrase being coined called 'uni-tasking' and the notion is that consciously giving your full attention to one thing at a time is much better for mental and physical health than multi-tasking. None of us can actually multi-task anyway – we can think thoughts and do something unrelated at the same time but we can't engage in two different complex tasks or think two things at the same time. We can flick rapidly between tasks but when we are doing that we are not giving either our full attention.
Attempting to focus on more than one complex task at any one time results in attention switching.


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NBA Rumors: Pelicans Could Get James Harden For Package Centered On Lonzo Ball & Eric Bledsoe
In a newly published trade idea involving Houston Rockets shooting guard James Harden, NBA Analysis Network suggested that the New Orleans Pelicans could acquire the disgruntled superstar for a package featuring guards Lonzo Ball and Eric Bledsoe, as well as multiple young players and future draft picks.
As explained by the publication on Thursday, the Pelicans are a young team that has added several quality players over the past few years. While it may be a "complete shock" if the team ends up with Harden ahead of the March 2021 deadline, the outlet suggested that such a move could greatly speed up the rebuilding process, especially since New Orleans has a number of assets that could greatly interest the Rockets.
In its suggested deal, the site recommended sending Harden and backup guards Ben McLemore and Jae'Sean Tate to the Pelicans for Bledsoe, Ball, second-year reserves Jaxson Hayes and Nickeil Alexander-Walker, two 2021 first-round picks, and a first-round selection each from the 2023 and 2024 drafts. This transaction, as explained, could be just what New Orleans needs to qualify for the postseason as the three-time scoring champion teams up with the club's young stars.
"With Brandon Ingram and Zion Williamson, the Pelicans have a star core for the future but they are still years away. Harden would create a bit of a big three and give the Pelicans a player with postseason experience."
Harry How / Getty Images
So far, Harden has continued to dominate the stat sheet for Houston despite various reports hinting at his unhappiness with the organization and desire to be traded. According to Basketball-Reference, he has averaged 39 points, five rebounds, and 12.5 assists in two games this season, following a year in which he posted averages of 34.3 points, 6.6 rebounds, and 7.5 assists and shot 44.4 percent from the field and 35.5 percent from three-point range.
Per NBA Analysis Network, the hypothetical trade could benefit Houston as it's possible that new head coach Stephen Silas will focus less on three-point shooting, while also relying on newly added veterans John Wall and DeMarcus Cousins as the new "centerpiece players." But even if the theoretical deal becomes a reality, the publication predicted that the Rockets "still have a chance" of making the playoffs in 2021.
Although Ball has had several ups and downs since getting picked second overall in the 2017 draft, he remains a frequent trade rumor subject due to his youth and playmaking ability. Bledsoe, meanwhile, offers several years of experience and an ability to contribute on both ends of the floor. Last season, he averaged 14.9 points, 4.6 rebounds, and 5.4 assists per game while playing for the Milwaukee Bucks, per Basketball-Reference.
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