You are presented with multiple paper abstracts, alongside the associated literature review and chapter titles. Given the provided information, you are going to do a literature review. Please generate a coherent literature review that synthesizes the content, draws connections between different works, highlights major findings, and identifies any gaps in the existing research.

Literature Review Title: A Survey on Industrial Internet of Things: A Cyber-Physical Systems Perspective 
Chapter Title:  1) INTEGRATION OF SCADA AND DCS 
1. Abstract of Cited Paper (BIB001):  Based on the fifth generation mobile communication (5G), and 5G open grid computing environment (5G OGCE), an architecture of heterogeneous large-scale parallel supervisory control and data acquisition/distributed control systems (SCADA/DCS) system of systems (SoS) is presented. Its purpose is to supervise and control and acquire data of process function value of operating electricity, water, air and gas, in natural disasters and accidents caused by incorrectly using them. This architecture, compared with NASA's architecture decomposition of space exploration systems, and with Smart Grid Architecture Model (SGAM), is more suitable for mining and ocean engineering, especially sea-wave power plants, and operating and controlling of processing water, electricity, gas, and air systems in parallel. The architecture can act as a framework for factory automation in 5G OGCE. By using heterogeneous concurrent agents (HCA) in concurrent enterprise (CE), this architecture can realize cyber manufacturing system supported by cloud computing. 
2. Abstract of Cited Paper (BIB002):  The paper addresses the development and implementation of a distributed and hierarchized control system for processes in food industry. More precisely, the wheat grinding and bread production processes that take place at the Mill and bread factory Calafat, Romania, are envisaged. Two solutions based on the DCS / SCADA (Distributed Control System / Supervisory Control and Data Acquisition) architecture are proposed. The first DCS-SCADA structure is a hierarchical monitoring and control system based on digital controllers, data acquisition and computer system. The second structure is a DCS-SCADA hierarchical monitoring and control system based on compact data acquisition and control systems. The configuration and the functionality of the DCS levels are described. Also, the communication interface between the primary control loops and the superior hierarchic levels is presented. The proposed control structures allow the improvement of the overall system currently implemented at the mill and bread factory.

Literature Review:
The complexity and scale of industrial systems calls for the seamless integration of SCADA and DCS to carry out high-performance monitoring and efficient control. To this end, Karnouskos and Colombo BIB001 introduced a vision and directions for designing the architecture of next-generation SCADA/DCS with considerations for information technology trends. This work pointed out that the monitoring, management and visualization, scalability, security and other aspects shall be investigated in the future complex and collaborative SCADA/DCS ecosystem. In addition, Lü et al. BIB002 proposed a heterogeneous large-scale SCADA/DCS architecture to operate, monitor and control large-scale systems (e.g., power plants, gas and air systems). SCADA systems are also used in food production and can be extended with DCS. For instance, Selişteanu et al. BIB003 proposed a DCS/SCADA architecture to control the process of bread production (e.g., wheat grinding and bread production). The hierarchical architecture consists of five levels, including field level, data acquisition level, process supervision level, coordination level, and production control level.