System Integration Technology Research Articles

Development of a supercritical and an ultra-supercritical circulating fluidized bed boiler

The supercritical circulating fluidized bed (CFB) boiler, which combines the advantages of CFB combustion with low cost emission control and supercritical steam cycle with high efficiency of coal energy, is believed to be the future of CFB combustion technology. It is also of greatest importance for low rank coal utilization in China. Different from the supercritical pulverized coal boiler that has been developed more than 50 years, the supercritical CFB boiler is still a new one which requires further investigation.Without any precedentor engineering reference, Chinese researchers have conducted fundamental research, development, design of the supercritical CFB boilers independently. The design theory and key technology for supercritical CFB boiler were proposed. Key components and novel structures were invented. The first 600 MWe supercritical CFB boiler and its auxiliaries were successfully developed and demonstrated in Baima Power Plant, Shenhua Group as well as the simulator, control technology, installation technology, commissioning technology, system integration and operation technology. Compared with the 460 MWe supercritical CFB in Poland, developed in the same period and the only other supercritical one of commercial running in the word beside Baima, the 600 MWe one in Baima has a better performance. Besides, supercritical CFB boilers of 350 MWe have been developed and widely commercialized in China. In this paper, the updated progress of 660 MWe ultra-supercritical CFB boilers under development is introduced.

Mid-infrared integrated photonics on silicon: a perspective

AbstractThe emergence of silicon photonics over the past two decades has established silicon as a preferred substrate platform for photonic integration. While most silicon-based photonic components have so far been realized in the near-infrared (near-IR) telecommunication bands, the mid-infrared (mid-IR, 2–20-μm wavelength) band presents a significant growth opportunity for integrated photonics. In this review, we offer our perspective on the burgeoning field of mid-IR integrated photonics on silicon. A comprehensive survey on the state-of-the-art of key photonic devices such as waveguides, light sources, modulators, and detectors is presented. Furthermore, on-chip spectroscopic chemical sensing is quantitatively analyzed as an example of mid-IR photonic system integration based on these basic building blocks, and the constituent component choices are discussed and contrasted in the context of system performance and integration technologies.

Investigation of CMOS Multiplexer Jet Matrix Addressing and Micro-Droplets within a Printhead Chip.

In this study, we demonstrate and investigate a new droplet injection design. We create a thermal inkjet (TIJ) printhead using an application-specific integrated circuit system and bulk micromachining technology (microelectromechanical systems). We design inkjet printhead chips with a new structure and investigate their properties. For the new structure, the integration of complementary metal-oxide-semiconductors (MOSs) and enhancement-mode devices, as well as power switches and a TIJ heater transducer, enables logic functions to be executed on-chip. This capability is used in the proposed design to address individual jets with even fewer input lines than in matrix addressing. A high number of jets (at least 896) can be addressed with only 11 input lines. E1 (Enable 1) and E2 (Enable 2) are set up dependently, and they have the ability to reverse their signals in relation to each other (i.e., if E1 is disabled, E2 is enabled and vice versa). The E1 and E2 signals each service 448 jets. If one of the MOSs is turned on, then it corresponds to a power line with a similar function. If an addressing gate terminal of the other MOS has a discharge action, then we can control a different heater to generate heating bubbles in the jet inks. The operating frequency for addressing these measurements is 18 kHz in normal mode, 26 kHz in draft mode, and 16 kHz in best mode.

Clinician Perspectives on the Management of Abnormal Subcritical Tests in an Urban Academic Safety-Net Health Care System

Missed or delayed follow-up of abnormal subcritical tests (tests that do not require immediate medical attention) can lead to poor patient outcomes. Safety-net health systems with limited resources and socially complex patients are vulnerable to safety gaps resulting from delayed management. Clinician perspectives to identify system challenges, vulnerable situations, and potential solutions were sought in focus groups. Five semistructured focus groups were conducted in 2015 with purposefully sampled clinicians from radiology, hospital medicine, emergency medicine, risk management, and ambulatory care from an urban, academic, integrated, safety-net health system. Thematic analysis identified challenges of current management of abnormal subcritical tests, vulnerable situations, and solution characteristics. A total of 43 clinicians participated. Clinicians cited challenges in assigning responsibility for follow-up and identified tests pending at discharge and tests requiring delayed follow-up as vulnerable situations. The lack of tracking systems and missing contact information for patients and providers exacerbated these challenges. Proposed solution characteristics involved protocols to aid in assigning responsibility, reliable paths of communication, and systems to track the status of tests. Clinicians noted a strong desire for integration of the work flow and technology solutions into existing structures. In an urban safety-net setting, clinicians recommended outlining clear chains of responsibility and communication in the management of subcritical test results, and employing simple, integrated technological solutions that allow for tracking and management of tests. Existing test management solutions should be adapted to work within safety-net systems, which often have fewer resources and more complex patients and may function in the absence of integrated technology systems.

Bearing and technological systems for building agricultural aggregates

As a result of the technical re-equipment of machine and tractor parks of agricultural enterprises, recently technological units of a new generation appear on the fields. The principal difference of such units is not only in their constructive modular design, but also in the aggregation of their mobile power tools or universal energy facilities with replaceable adapter modules. The classification of composite elements for the construction of such modular aggregates based on mobile power tools and universal power facilities - as their carrier systems and a set of replaceable adapter modules - as technological systems has been performed. Objects of the classification of load-bearing systems are subdivided according to their type, a number of the main distinctive features associated with the principle of aggregate formation, the performance of their running chassis, the integration of technological systems with bearing systems, the design features of location or the presence of separate composite units and mechanisms - power plant, control cabin , mechanism for replacing the plug-in adapters and others. For the objects of technological systems, distinctive features are identified that are associated with the processes performed and the purpose of the replaceable adapter modules, their design execution, and also with the ways of their aggregation with mobile power facilities and universal energy resources. Given the brand commercially cultivated machines, prototypes of promising conceptual designs. In the course of the patent studies, a number of security documents (patents) used in the designs of developed models and advanced units developed relating to technical and technological solutions were identified. The technical and economic assessment of the functioning of machine and tractor parks using the example of models of agricultural enterprises in the subareas of the regions of southern Russia predicted that the use of machine and tractor parks based on new generation units (mobile energy facilities with sets of plug-in adapters) will reduce the need for power machines, levels of costs for the recruitment of new equipment of machine and tractor parks and their operation.

Research of intelligent substation merging unit calibration equipment

This paper analyzes the structure and principle of the merging unit. Considering the effect of merging unit device performance of metering device and electrical protection, determines the inspection items and technical indicators. Combined with the merging unit related performance detection technology and related standards and rules, the paper uses system integration technology and automatic control technology to studied synchronization method in a separate network and the operation of SV for IEEE1588. Merging unit field calibration device was developed with advantages of high quality, good performance, reliable, and the device was used for field testing at some intelligent substation merge cells, its validity was proved.

Huawei Leapfrogging System Integration With TSTT

The Telecommunications Services of Trinidad and Tobago Limited (TSTT) has demonstrated its approach to modernization via integration of technological systems with international telecommunications p...

Research on Intelligent Decision Support System of Soybean

Based on agriculture production knowledge and computer technology, this paper applied database, artificial intelligent, management information system, decision support system, network technology and information integration technology to the field of soybean production, and offered decision support to users in imitating the curse during which experts solved the problems, therefore, guided production practice, introduced structure and function of decision support system of soybean, and then we analyzed the design of the knowledge base and the realization of inference engine in details as well.

Electrification in Agricultural Technology Methods and Technologies for System Integration

Electrification in Agricultural Technology Methods and Technologies for System Integration

Relevant Factors in The Post-Merger Systems Integration and Information Technology in Brazilian Banks

This article discusses the factors present in post-merger integration of Systems and Information Technology (SIT) that lead to positive and negative results in mergers and acquisitions (M & A). The research comprised three of the largest acquiring banks in Brazil. We adopted two methods of research, qualitative, to operationalize the theoretical concepts and quantitative, to test the hypotheses. We interviewed six executives of banks that held relevant experience in M & A processes. Subsequently, we applied questionnaires to IT professionals who were involved in the SIT integration processes. The results showed that the quality and expertise of the integration teams and managing the integration were the most relevant factors in the processes, with positive results for increased efficiency and the increased capacity of SIT. Negative results were due to failures in exploiting learning opportunities, the loss of employees and the inexpressive record of integration procedures.

Expulsive force in the development of CO2 sequestration: application of SC-CO2 jet in oil and gas extraction

With the rapid development of global economy, an increasing amount of attention has been paid to the emission of greenhouse gases, especially CO2. In recent years, dominated by the governments around the world, several significant projects of CO2 sequestration have been conducted. However, due to the huge investment and poor economic effects, the sustainability of those projects is not satisfactory. Supercritical CO2 (SC-CO2) has prominent advantages in well drilling, fracturing, displacement, storage, plug and scale removal within tubing and casing, which could bring considerable economic benefits along with CO2 sequestration. In this paper, based on physicochemical properties of SC-CO2 fluid, a detailed analysis of technical advantages of SC-CO2 applied in oil and gas development is illustrated. Furthermore, the implementation processes of SC-CO2 are also proposed. For the first time, a recycling process is presented in which oil and gas are extracted and the CO2 generated could be restored underground, thus an integrated technology system is formed. Considering the recent interests in the development of enhancing hydrocarbon recoveries and CO2 sequestration, this approach provides a promising technique that can achieve these two goals simultaneously.

Capturing Essential Information to Achieve Safe Interoperability.

In this article, we describe the role of "clinical scenario" information to assure the safety of interoperable systems, as well as the system's ability to deliver the requisite clinical functionality to improve clinical care. Described are methods and rationale for capturing the clinical needs, workflow, hazards, and device interactions in the clinical environment. Key user (clinician and clinical engineer) needs and system requirements can be derived from this information, therefore, improving the communication from clinicians to medical device and information technology system developers. This methodology is intended to assist the health care community, including researchers, standards developers, regulators, and manufacturers, by providing clinical definition to support requirements in the systems engineering process, particularly those focusing on development of Integrated Clinical Environments described in standard ASTM F2761. Our focus is on identifying and documenting relevant interactions and medical device capabilities within the system using a documentation tool called medical device interface data sheets and mitigating hazardous situations related to workflow, product usability, data integration, and the lack of effective medical device-health information technology system integration to achieve safe interoperability. Portions of the analysis of a clinical scenario for a "patient-controlled analgesia safety interlock" are provided to illustrate the method. Collecting better clinical adverse event information and proposed solutions can help identify opportunities to improve current device capabilities and interoperability and support a learning health system to improve health care delivery. Developing and analyzing clinical scenarios are the first steps in creating solutions to address vexing patient safety problems and enable clinical innovation. A Web-based research tool for implementing a means of acquiring and managing this information, the Clinical Scenario Repository™ (MD PnP Program), is described.

Formation of Nanoporous Electrode on Aligned CNT Films Using Dealloying

Eco-power systems and recyclable energy are in high demand in low-carbon societies for practical applications of power devices. In these power-device fields, there is a requirement for the development of electronic packages for the radiation of heat. Carbon nanotubes (CNTs) have high thermal conductivities, large electron mean free paths, and large maximum current densities, as compared to metals. For these reasons, the application of CNTs in semiconductor packaging and three-dimensional wires is expected. It is reported that CNTs that have high densities and are well aligned are formed by the surface decomposition of SiC, which is the substrate of the power transistor [1]. However, the contact resistance between the CNTs and the electronic circuit is high. On the other hand, metal nanoparticles have been known to possess various properties that are not present in the bulk and are expected to have applications in various fields such as electronics and biotechnology. Metal nanoparticles have achieved low melting points and high chemical reactivity. Lower temperatures for some processes are expected when using nanosized particles. Au is applied in micro/nano electrochemical systems and in biotechnology applications because it exhibits superior stability and conductivity over other metals. Dealloying is the method used to construct a nanoporous structure by the selective etching of the poor metal from a bimetal consisting of a noble metal and a base metal. We have attempted to form nanoporous structures of Au–Ag films using the electrochemical method and a low-temperature dealloying process [2]. We tried to form metal nanoparticles of Au–Ag on the CNTs to get good contact resistance by dealloying. The purpose of this study is to clarify the initial growth mechanism of the electrodeposited films and nanoporous structures on the aligned CNT films, and to propose an electrode structure with good thermal-emission characteristics.

Expected innovation in industrial robots

The market of industrial robots has been growing these years. The shipping amount attained in 2014 was over 230,000 units in the world, and better result was achieved in 2015. There have been great changes in more than 30 years of history of industrial robot market. The market has been expanding from limited countries to worldwide and from limited industries to various applications. However, the scale of the robot market is still small compared to the remarkable growth of the manufacturing market in the world. Innovations are required in the system integration, materials, and elemental technologies for wider deployment and usage of industrial robots. The innovation in system integration has a goal to provide customers with the best fit and reasonably priced solutions for the problems in manufacturing processes, as well as to balance the profit for system integrators. The innovation in material and elemental technologies has a goal to solve the problems that still remain in robot technologies since the beginning of the market. Higher reliability and better cost performance should be established for the advanced applications in the future. The collaborations of various industries are also required to achieve the innovations.

Heterogeneous 3-D Integration Using Self-Assembly and Electrostatic Bonding

To overcome various concerns caused by scaling down the device size in future Large Scale Integrated Circuits (LSIs), it is indispensable to introduce a new concept of heterogeneous 3-D integration in which various kinds of device chips with different sizes, different devices, and different materials are vertically stacked. To achieve such heterogeneous 3-D integration, a key technology of self-assembly and electrostatic bonding has been developed. Exploring new devices for the Internet of Things, we have fabricated several kinds of heterogeneous 3-D LSIs called superchip by stacking compound semiconductor device chip, photonic device chip, and spintronic device chip on CMOS device chips using self-assembly and electrostatic bonding. Furthermore, a new system integration technology using a large-area substrate has been developed to reduce the cost of 2.5-D/3-D system module. A 3-D-stacked image sensor system module for automatic driving vehicle has been fabricated using this technology.

Understanding CMOS Technology Through TAMTAMS Web

In the last decades, the CMOS technology has undergone an extraordinary evolution. Because of the continuous scaling process, CMOS transistors are now so small that millions can be easily fitted in a single chip. Shrinking transistor sizes have complex consequences on the performance of both the transistor itself and the system that is based upon it. Understanding and teaching the CMOS scaling process and its consequences on circuits are an increasingly difficult task. Furthermore, the scaling process is reaching an end, due to the continuously growing fabrication costs and the unavoidable physical limits on the smallest size achievable. As a consequence, many emerging technologies, such as carbon nanotubes and nanowires, are being studied as possible CMOS substitutes. Describing and teaching these new technologies, alongside the scaled transistor itself, adopting a complete and well-organized approach is a process that presents further difficulties. To solve these problems, we have started in the past years the development of TAMTAMS, a tool conceived to analyze CMOS circuits, from device to system level. The tool is based on models derived from the literature or, in some cases, internally developed and verified. It allows to analyze the main characteristics of a CMOS transistor, such as currents, threshold voltage, or mobility, considering different technology nodes and parameters, and to understand how they influence the circuits performance. The tool structure is open and modular, allowing, therefore, easy integration of further CMOS technologies and to compare them. In this paper, we present a total overview of the original tool, TAMTAMS Web. While the general concept behind the tool is still the same, the tool was completely rewritten around a Web interface. TAMTAMS Web is freely accessible to students and to any one interested in CMOS technology. As a future development, several post-CMOS technologies will be added to TAMTAMs Web, allowing, therefore, a comparison with the state-of-the-art CMOS. TAMTAMS Web is actively used in the Integrated System Technology (IST) held at the Politecnico di Torino. It defines a new way of learning, because students learn and understand the modern electronic technology both using TAMTAMS Web as an instrument, and being part of the development process, as part of the IST course.

Research on Digital Simulation of mechanical and Control System Based on MATLAB

With the rapid development of power electronic technology, microelectronics technology, modern control theory and material science, AC speed control system and electromechanical integration technology presents a broad development and application prospect. Therefore, it is has become a challenging new topic to set up models, make simulation and analysis for such system.In this paper, it takes the simulation of mechanical control system as the breakthrough point, combined with the brief introduction of Matlab/Simulink simulation software and the general method for simulation of mechanical and control system, discussing the realization of the general simulation model of the mechanical and control system based on MATLAB/Simulink.

Numerical simulation and experiment validation on lightning-induced effects of a special vehicle

In recent years, with the development of the system integration technology, the outside integrative special vehicles, such as big oil tank, trucks loading with dangerous goods and so on, are becoming more and more important. When the vehicle is under way, it will inevitably encounter the nature environment, including lightning. If the lightning strikes directly or very close to the vehicle, the lightning-induced effects will be very destructive. Therefore, for a better understanding of the lightning-induced effects produced on the special vehicle by the lightning strike, the research on lightning-induced effects of a special vehicle for aerospace system transportation was proposed. In the paper, a numerical simulation model for the special vehicle is established, the lightning-induced effects are analyzed successfully by using tramsmission-line matrix (TLM) algorithm, and the experiment validation example is also implemented. By comparing the numerical simulation with the actual experiment results, the correctness trend of the numerical simulation is validated and a mass of invaluable research data is obtained, which has a deep significance on the lightning research in our country.

半導体システムインテグレーション技術におけるFO-WLPとその将来展望

半導体システムインテグレーション技術におけるFO-WLPとその将来展望

RETRACTED: Influence of temperature and microstructure on the mechanical properties of sintered nanosilver joints

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor-in-Chief. Please note that the reason for this retraction has been updated in July 2015, as follows: The authors have plagiarized part of a paper that had already appeared in 'Electronic System-Integration Technology Conference (ESTC), 2010 3rd', 1-6, 101109/ESTC.2010.5642948. One of the conditions of submission of a paper for publication is that authors declare explicitly that their work is original and that no substantial portion has appeared in a publication elsewhere. As such this article represents an abuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process.