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Design of a fibre optic linked distributed control and monitor system for the ion source and its subsystems.of a low energy 400kV accelerator

Design of a fibre optic linked distributed control and monit...

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IEEE international conference on Recent Trends in Electronics, Information & Communication Technology (RTEICT)

作者： K. Suresh C. David J. Navas B.K. Panigrahi A. Parthasarathi Materials Science Group Indira Gandhi Centre for Atomic Research Homi Bhabha National Institute Kalpakkam Tamil Nadu India Electronics and Instrumentation Group Indira Gandhi Centre for Atomic Research Homi Bhabha National Institute Kalpakkam Tamil Nadu India Materials Science Group Indira Gandhi Centre for Atomic Research Kalpakkam Tamil Nadu India

ISBN: (数字)9781538624401

ISBN: (纸本)9781538624418

A fibre optic linked distributed control cum monitor system and various field interface circuits have been designed and developed in-house to facilitate control and monitoring an RF ion source and its subsystems.of a low energy 400kV accelerator. The 400kV accelerator has been established indigenously at Materials Science Group, Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, Tamilnadu, India as part of a state of art dual ion irradiation facility. This dual ion irradiation facility has been set up to simulate synergistic effects of displacement damage and gaseous helium/hydrogen which is important in the context of development of radiation resistance materials for fast fission, fusion nuclear reactors and accelerator driven subcritical systems. A device interface node through its I/O boards is interfaced to the accelerator systems.at the high voltage dome and is linked to a Loop Controller at the control computer located about 25 metres away from the accelerator using a pair of fibre optic cables. Graphical programming language LabVIEW based virtual instruments are used to create user-friendly and interactive panels for the control system. All the control and monitoring information are transmitted over the fibre optic loop up to 1.152 Mbaud rate, continually refreshing control outputs and scanning status inputs at a typical rate of 125Hz. The performance of the control system is found to be very good and the accelerator is regularly operated producing various gaseous ion beams like He + , He ++ , H + , Ar + with a typical yield of 10uA.

关键词： Monitoring High-voltage techniques Radiation effects Ion beams Fiber optics Ion sources

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Unmasking Data Secrets: An Empirical Investigation into Data Smells and Their Impact on Data Quality

Unmasking Data Secrets: An Empirical Investigation into Data...

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AI Engineering - Software Engineering for AI (WAIN), IEEE/ACM Workshop on

作者： Gilberto Recupito Raimondo Rapacciuolo Dario Di Nucci Fabio Palomba Sesa Lab - University of Salerno Salerno Italy University of Salerno Salerno Italy

ISBN: (数字)9798400705915

ISBN: (纸本)9798350352191

Artificial Intelligence (AI) is rapidly advancing with a data-centered approach suitable for various domains. Nevertheless, AI faces significant challenges, particularly in data quality. Data collection from diverse sources can introduce quality issues that may threaten the development of AI-enabled systems. A growing concern in this context is the emergence of data smells –issues specific to the data used in building AI models, which can have long-term consequences. In this paper, we aim at enlarging the current body of knowledge on data smells, by proposing a two-step investigation into the matter. First, we updated an existing literature review in an effort of cataloguing the currently existing data smells and the tools to detect them. Afterward, we assess the prevalence of data smells and their correlation with data quality metrics. We identify a novel set composed of 12 data smells distributed across three additional categories. Secondly, we observe that the correlation between data smells and data quality is notably impactful, exhibiting a pronounced and substantial effect, especially in highly diffused data smell instances. This research sheds light on the complex relationship between data smells and data quality, providing valuable insights into the challenges of maintaining AI-enabled *** CONCEPTS• Software and its engineering → Software maintenance tools.

关键词： Measurement Software maintenance Correlation Data integrity Taxonomy distributed databases Reliability

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The 3G GPRS mobile systems.problem of the traffic analysis and dynamic control of QoS

The 3G GPRS mobile systems problem of the traffic analysis a...

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Siberian conference on Control and Communications (SIBCON)

作者： A.B. Markhasin E.V. Kokoreva Computer Science Siberian State University of Telecommunications Novosibirsk Russia

The development of 3G mobile networks is attended by revolutionary changes in the telecommunication and service technologies of mobile systems. There have been impressive rates of evolution from circuit switching (CS) to packet switching (PS) and IP protocols; from monoservice voice systems. operating on CS principles, to multiservice PS system for integrated transmission of fast data, voice, video etc. with differentiation and quality of service (QoS) control. The amount of traffic with access to broadband Internet services is rapidly increasing. The time principles of payment are substituted by accounts for data volume and quality of service. The new technologies require development of new methods of traffic theory, optimization and design. It is necessary to change from one-dimensional Erlang models for homogeneous traffic in point-to-point channels to develop the theory of the multi-dimensional distributed queues with priority service for integrated traffic in multi-point radio channels with multiple access. This article presents such new methods for the analysis of traffic, optimization and dynamic QoS control for 3rd generation mobile networks, taking GPRS systems.as an example. The offered solutions are based on the development of a numerical method of balancing traffic intensities (see Markhasin, A.B., 2nd All-Union Confer. on Multiple Access systems. pt1, p.146-52, 1999; Markhasin, A.B. and Kokoreva, E.V., Proc. VI Business-Forum "Mobile systems.01", vol.1, pp.175-81, 2001), and also on the development of our results concerning the analysis of traffic, optimization and dynamic QoS control in integrated packet satellite and radio ATM networks (see Markhasin, IEEE Int. Conf. on Communications, p.1914-18, 2001).

关键词： Ground penetrating radar Traffic control Communication system traffic control Quality of service Control systems Packet switching Telecommunication traffic Integrated circuit technology Switching circuits Telecommunication switching

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The Research of the SM2, SM3 and SM4 Algorithms in WLAN of Transformer Substation

The Research of the SM2, SM3 and SM4 Algorithms in WLAN of T...

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Electronic Information Technology and Computer Engineering (EITCE), international conference on

作者： Wang Tong Cui Wen Peng Li Tong Wang Liang Li Hao Chi Ying Ying Qiao Lei Liu Rui Power Grid Technology Center State Grid Liaoning Electric Power Research Institute Beijing Smartchip Microelectronics Company Limited Metering Center State Grid Liaoning Electric Power CO. LTD.

ISBN: (数字)9781728135847

ISBN: (纸本)9781728135854

With the gradual extension of artificial intelligence applications in terminal equipment, intelligent terminals based on edge computing are also widely used in power systems. The new embedded terminal device with local decision function can process the collected raw data locally and only report the key information, which can reduces the requirement of network bandwidth, so makes the wireless transmission meet the needs of more business scenarios. In order to collect a large number of terminal data in time, traditional substations need high network bandwidth. The data can only be transmitted over wire. The data in new transformer substation with intelligent terminal can be aggregated by wireless transmission. But the data security of wireless networks such as IEEE802.11ah, LoRa , NBIoT and WiFi cannot be guaranteed. At the same time, with the needs of social development, data security has risen to the height of national security. In order to realize the "security and controllability" of information systems. China Cryptographic Administration has published a series of encryption and decryption algorithms such as SM2, SM3, SM4. In this paper, based on the IEEE802.11ah standard, we study the application of SM2, SM3 and SM4 in LAN of transformer substation, and mainly focus on the identity authentication, key distribution and data encryption and decryption. In view of the three different stages, the system scheme designs are proposed respectively, and then we analyze their security and the additional system overhead in detail. The research of the SM2, SM3 and SM4 algorithms in LAN of transformer substation will further promote the popularization and application of intelligent terminal in substaion, and this will also ehance the level of intelligence of substation.

关键词： Substations Wireless LAN Security Protocols

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Multi-step transactions specification and verification in a mobile database community

Multi-step transactions specification and verification in a ...

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3rd international conference on Information and Communication Technologies, vol.3

作者： Rafat Alshorman Walter Hussak Department of Computer Science Loughborough University Loughborough UK

Executions of concurrent multi-step transactions interleave steps in ways that improve the throughput of the particular transactions processing system. In this paper, we use temporal logic to specify and verify formally the correctness of local and mobile transactions executing concurrently on a mobile database. The correctness condition is that of serializability which we specify in CTL (Computational Tree Logic). The reason for using a temporal logic such as CTL, is that the method can be extended to verifying infinite schedules modelling mobile environments such as MDBCs (mobile database communities). The verification is carried out using the symbolic model checking NuSMV. We verify that a local scheduler based on timestamps serializes local and mobile multi-step transactions.

关键词： Transaction databases History Logic Mobile computing Computer science Processor scheduling distributed databases Mobile ad hoc networks Database systems Concurrent computing

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Contingency Analysis and Placement of DG to Improve Power Performance Indices

Contingency Analysis and Placement of DG to Improve Power Pe...

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Electrical Power Engineering, Communication and computing Technology(ODICON), Odisha international conference on

作者： Raghvendra Tiwari Sarath Chandra Biranchi Narayan Kar Amiya Kumar Naik Pawan Dadaji Kamadi Parul Dubey Department of Electrical Engineering Teerthanker Mahaveer University Moradabad India Department of Electrical Engineering MNNIT Allahabad Prayagraj India Department of Electrical Engineering Seemanta Engineering College Odisha India Department of Electrical Engineering Shiksha O Anusandhar Deemed to be University Odisha India Department of Electrical Engineering G H Raisoni College of Engineering & Management Nagpur India Symbiosis Institute of Technology Nagpur Campus Symbiosis International (Deemed University) Pune India

ISBN: (数字)9798350354379

ISBN: (纸本)9798350354386

The power system constitutes a complex network where security is the priority. Contingency analysis emerges as a longstanding and widely embraced technique aimed at preemptively assessing the severity of potential outages and their ramifications, thereby facilitating necessary actions to uphold the power grid's security. Given the considerable number of components within the system, scrutinizing individual contingencies proves to be a laborious endeavour. However, it is imperative to identify those contingencies that could potentially trigger severe conditions within the power system. This is accomplished by using the fast decoupling load flow (FDLF) approach to compute performance indices, such as the reactive power performance index (PIv) and active performance index (PIp), for each transmission line outage. Subsequently, contingency ranking is performed within the MATLAB environment, furnishing operators with insights ranging from the most critical to the least significant outages in the power system. The integration of distributed generation (DG) into distribution networks is pursued with the objective of augmenting system performance indices. DGs are incorporated into load flow analysis employing either a constant power factor model (CPF) or a variable reactive power model (VRP), contingent upon the output power characteristics. These models are seamlessly integrated into the load flow analysis. The efficacy of this approach has been validated through testing on both IEEE 5-Bus and IEEE 14-Bus systems.by integrating mathematical models of DGs.

关键词： Reactive power Analytical models Power transmission lines Contingency management Mathematical models Performance analysis Security Reliability Load modeling Load flow analysis

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Fermilab distributed Monitoring System (NGOP)

Fermilab Distributed Monitoring System (NGOP)

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international conference on computing in High Energy and Nuclear Physics

作者： T.Dawson J.Fromm L.Giacchetti K.Genser T.Jones T.Levshina I.MandrichenkoM.Mengel D.Petravick K.Schumaher R.Thies S.Timm R.Thompson Fermi National Laboratory Batavia Illinois U.S.A Fermi National Laboratory Batavia Illinois U.S.A Fermi National Laboratory Batavia Illinois U.S.A Fermi National Laboratory Batavia Illinois U.S.A Fermi National Laboratory Batavia Illinois U.S.A Fermi National Laboratory Batavia Illinois U.S.A Fermi National Laboratory Batavia Illinois U.S.A Fermi National Laboratory Batavia Illinois U.S.A Fermi National Laboratory Batavia Illinois U.S.A Fermi National Laboratory Batavia Illinois U.S.A Fermi National Laboratory Batavia Illinois U.S.A Fermi National Laboratory Batavia Illinois U.S.A

ISBN: (纸本)188013277X

A distributed Monitoring System (NGOP) that will scale to the anticipated requirements for Run Ⅱ computing has been under development at Fermilab. NGOP [1] provides a framework to create Monitoring Agents for monitoring the overall state of computers and software that are running on them. Several Monitoring Agents are available within NGOP that are capable of analyzing log files, and checking existence of system daemons, CPU and memory utilization, etc. NGOP also provides customizable graphical hierarchical representations of these monitored systems. NGOP is able to generate events when serious problems have occurred as well as raising alarms when potential problems have been detected. NGOP allows performing corrective actions or sending notifications. NGOP provides persistent storage for collected events, alarms and actions. A first implementation of NGOP was recently deployed at Fermilab. This is a fully functional prototype that satisfies most of the existing requirements. For the time being the NGOP prototype is monitoring 512 nodes. During the first few months of running NGOP has proved to be a useful tool. Multiple problems such as node resets, offline CPUs, and dead system daemons have been detected. NGOP provided system administrators with information required for better system tuning and configuration. The current state of deployment and future steps to improve the prototype and to implement some new features will be presented.

关键词： monitoring system, monitoring agent, action, rules

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Compadres: a lightweight component middleware framework for composing distributed real-time embedded systems.with real-time Java 2007

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proceedings of the 8th ACM/IFIP/USENIX international conference on Middleware

作者： Jie Hu Shruti Gorappa Juan A. Colmenares Raymond Klefstad Department of Electrical Engineering and Computer Science University of California Irvine CA Department of Electrical Engineering and Computer Science University of California Irvine CA and Applied Computing Institute College of Engineering University of Zulia

ISBN: (纸本)9783540767770

Component frameworks simplify development of enterprise systems.and enable code reuse, but most frameworks are unpredictable and hence unsuitable for embedded or real-time systems. Similarly, Java is increasingly being used to build embedded system software because of its portability and ease of use. The Real-Time Specification for Java (RTSJ) reduces the unpredictability in Java execution times by eliminating the need for a garbage collector. However, it introduces programming complexity that makes it difficult to build non-trivial applications. To bring the advantages of Java component development to DRE systems. while simultaneously simplifying the use of RTSJ, therefore, we have developed a new lightweight component model for RTSJ called Compadres. Compadres offers the following advantages: 1) Simple component definition in Java that abstracts away RTSJ memory management complexity; 2) System assembly from components by connecting ports that communicate through strongly-typed objects; 3) The Compadres compiler that automatically generates the scoped memory architecture for components, while the component framework handles communication between the components. To validate this work, we construct a non-trivial example application using the component framework, a simple real-time CORBA implementation. We then analyze the performance and efficiency of our component example versus a non-component example, RTZen. Our measurements show that our Compadres example built with components incurs only minor time overhead as compared to a comparable hand-coded example.

关键词： middleware RTSJ real-time java component framework

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Channel Coding QoS Evaluation for 3GPP Sub-6GHz and mmWave 5G V2X Highway Communication systems 23

Channel Coding QoS Evaluation for 3GPP Sub-6GHz and mmWave 5...

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proceedings of the 7th international conference on Algorithms, computing and systems

作者： Dimitrios Chatzoulis Costas Chaikalis Dimitrios Kosmanos Kostas E. Anagnostou George Karetsos Petros Lampsas Department of Digital Systems University of Thessaly Greece Department of Informatics & Telecommunications University of Thessaly Greece

ISBN: (纸本)9798400709098

Vehicle-to-everything (V2X) communications has gained a lot of interest in recent years and inevitably became part of the 5th-Generation New Radio (5G-NR) technologies, namely the sub-6GHz 5G and millimeter wave (mmWave) 5G. Also, the 3rd-Generation Partnership Project (3GPP) has defined reliability, end-to-end latency, data rate and range as the most important quality of service (QoS) parameters, which become crucial in highway propagation environments where the vehicles are moving at high speeds. These parameters are mostly improved by channel coding, which is a mechanism for limiting errors and improving the communication quality. Therefore, in this paper, we investigate the impact of use of 4th-Generation Long-Term Evolution (4G-LTE) turbo codes, 5G-NR polar codes and low-density parity-check codes (LDPC) in 5G V2X highway propagation environments and analyze the QoS parameters for both sub-6GHz 5G and mmWave 5G technologies. Our analysis shows that turbo-based coding schemes can be a future candidate for small data frame 5G V2X highway communications, since they present superior performance in most of the aforementioned QoS parameters.

关键词： 4G-LTE 5G-NR LDPC LOS NLOSv V2X highway traffic implementation scenarios mmWave 5G polar codes stochastic V2X model sub6-GHz 5G turbo codes

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Ultra-Scalable Simulations of Networks of Polarized Evolutionary Processors 19

Ultra-Scalable Simulations of Networks of Polarized Evolutio...

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proceedings of the 3rd international conference on Advances in Artificial Intelligence

作者： Sandra Gomez-Canaval Victor Mitrana Mihaela Paun Stanislav Vararuk Depto. de Sistemas Informáticos Universidad Politécnica de Madrid Madrid Spain National Institute for Research and Development of Biological Sciences Bucharest Romania Research Group of Modelling and Mathematical Biocomputation Universidad Politécnica de Madrid Madrid Spain

ISBN: (纸本)9781450372534

The Network of Polarized Evolutionary Processors (NPEP) is a rather new variant of the bio-inspired computing model called Network of Evolutionary Processors (NEP). This model, together with its variants, is able to provide theoretical feasible solutions to hard computational problems. NPEPE is a software engine able to simulate NPEP which is deployed over Giraph, an ultra-scalable platform based on the Bulk Synchronous Parallel (BSP) programming model. Rather surprisingly, the BSP model and the underlying architecture of NPEP have many common points. Moreover, these similarities are also shared with all variants in the NEP family. We take advantage of these similarities and propose an extension of NPEPE (named gNEP) that enhances it to simulate any variant of the NEP's family. Our extended gNEP framework, presents a twofold contribution. Firstly, a flexible architecture able to extend software components in order to include other NEP models (including the seminal NEP model and new ones). Secondly, a component able to translate input configuration files representing the instance of a problem and an algorithm based on different variants of the NEP model into some suitable input files for gNEP framework. In this work, we simulate a solution to the "3-colorability" problem which is based on NPEP. We compare the results for a specific experiment using NPEPE engine and gNEP. Moreover, we show several experiments in the aim of studying, in a preliminary way, the scalability offered by gNEP to easily deploy and execute instances of problems requiring more intensive computations.

关键词： Bio-inspired computational model Networks of Polarized Evolutionary Processors distributed architectures Parallel computation Bulk Synchronous Parallel programming model

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