Relevant bibliographies by topics / Electronic device and system performance evaluation

Academic literature on the topic 'Electronic device and system performance evaluation'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Electronic device and system performance evaluation"

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Shamo, Marcia Kuskin, Ravit Dror, and Asaf Degani. "Evaluation of a New Cockpit Device: The Integrated Electronic Information System." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 42, no. 1 (October 1998): 138–42. http://dx.doi.org/10.1177/154193129804200131.

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In spite of the well-recognized need for complete, accurate, and timely information in the cockpit environment, no computerized information system has been successfully introduced to the commercial flight deck. We suggest that two factors — information integration and multiple search mechanisms — may be identified as necessary characteristics for a viable electronic information system for the cockpit. The use of an information system which incorporated information integration and multiple search mechanisms was examined during an evaluation of the system at a major US airline. During the controlled experiment segment of the evaluation, subjects performed two sets of similar information retrieval and performance calculation tasks using the system and using traditional paper manuals; response accuracy and task execution time served as the dependent variables. Results showed that for both information retrieval and performance calculations, task execution with the integrated information system was significantly faster and had fewer errors than did task execution using paper manuals. Possible reasons for improved performance are discussed.
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Vistorte Salgado, Alejandro A., Fidel E. Hernández Montero, and Gianna Arencibia Castellanos. "Electronic device for gait analysis." Revista de Ciencia y Tecnología, no. 38 (October 31, 2022): 12–19. http://dx.doi.org/10.36995/j.recyt.2022.38.002.

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In order to automate the determination of gait parameters, a system capable of acquiring data from inertial units, exploiting their maximum sampling frequency, was developed. The study of gait is one of the fundamental indicators for the evaluation of physical performance. It allows the estimation of the functional deterioration of the elderly in an objective way, so several tests have been designed to evaluate it. The system developed has two fundamental elements: an electronic device and a desktop application. The electronic device has the function of collecting data from the MPU-9255 sensor using an ESP32 to set the sampling rate, transmitting the data via WiFi to the computer and monitoring the system’s battery. The desktop application allows the electronic device to be configured and controlled, as well as receiving, displaying and storing the data. As a result, a prototype capable of operating at a sampling frequency of 1 kHz was built. Tests carried out on the system demonstrate its reliability and allow the limits of sampling frequency and working distance to be set.
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Kjær, Martin, Huai Wang, and Frede Blaabjerg. "Adequacy Evaluation of an Islanded Microgrid." Electronics 10, no. 19 (September 25, 2021): 2344. http://dx.doi.org/10.3390/electronics10192344.

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The reliability of power converters has been extensively examined in terms of component- and converter level. However, in case of multiple generation units, the evaluation of the performance of power systems requires system-level modeling. This paper aims to merge the prior art of reliability modeling of power converters with the adequacy evaluation of power systems through an extensive design and evaluation analysis of a microgrid based case study. The methodology proposed in the paper integrates the device-level analysis into the domain of the conventional power system reliability analysis while outlining the steps needed to deal with non-exponential distributed failures of power electronic-based generation units. A replacement policy of the power electronic-based units is adopted by means of evaluating the system risk of not supplying system loads, and, finally, an approach on how to ensure a desired replacement frequency is outlined.
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Drozda, Joseph P., James Roach, Thomas Forsyth, Paul Helmering, Benjamin Dummitt, and James E. Tcheng. "Constructing the informatics and information technology foundations of a medical device evaluation system: a report from the FDA unique device identifier demonstration." Journal of the American Medical Informatics Association 25, no. 2 (May 3, 2017): 111–20. http://dx.doi.org/10.1093/jamia/ocx041.

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Abstract Objective The US Food and Drug Administration (FDA) has recognized the need to improve the tracking of medical device safety and performance, with implementation of Unique Device Identifiers (UDIs) in electronic health information as a key strategy. The FDA funded a demonstration by Mercy Health wherein prototype UDIs were incorporated into its electronic information systems. This report describes the demonstration’s informatics architecture. Methods Prototype UDIs for coronary stents were created and implemented across a series of information systems, resulting in UDI-associated data flow from manufacture through point of use to long-term follow-up, with barcode scanning linking clinical data with UDI-associated device attributes. A reference database containing device attributes and the UDI Research and Surveillance Database (UDIR) containing the linked clinical and device information were created, enabling longitudinal assessment of device performance. The demonstration included many stakeholders: multiple Mercy departments, manufacturers, health system partners, the FDA, professional societies, the National Cardiovascular Data Registry, and information system vendors. Results The resulting system of systems is described in detail, including entities, functions, linkage between the UDIR and proprietary systems using UDIs as the index key, data flow, roles and responsibilities of actors, and the UDIR data model. Conclusion The demonstration provided proof of concept that UDIs can be incorporated into provider and enterprise electronic information systems and used as the index key to combine device and clinical data in a database useful for device evaluation. Keys to success and challenges to achieving this goal were identified. Fundamental informatics principles were central to accomplishing the system of systems model.
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Bedicks, Gunnar, Fujio Yamada, Francisco Sukys, Cristiano Akamine, Luis Tadeu Raunheitte, and Edson L. Horta. "Handheld Digital TV Performance Evaluation Method." International Journal of Digital Multimedia Broadcasting 2008 (2008): 1–5. http://dx.doi.org/10.1155/2008/243937.

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This paper presents a simplified method for signal level clearance evaluation in each place of signal reception up to threshold for a given portable TV receiver device. It describes briefly the structure of transmission system considering the “1Seg” structure of ISDB-T. The preliminary laboratory test was made before the field tests to verify the main features of handheld receiver.
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Mescheder, Ulrich, Michael Lootze, and Khaled Aljasem. "Evaluation and Optimization of a MOEMS Active Focusing Device." Micromachines 12, no. 2 (February 9, 2021): 172. http://dx.doi.org/10.3390/mi12020172.

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In this paper we present a detailed evaluation of a micro-opto-electromechanical system (MOEMS) for active focusing which is realized using an electrostatically deformed thin silicon membrane. The evaluation is done using finite element methods and experimental characterization of the device behavior. The devices are realized in silicon on insulator technology. The influence of internal stress especially resulting from the high compressive buried oxide (BOX) layer is evaluated. Additionally, the effect of stress gradients in the crystalline device layer and of high reflective coatings such as aluminum is discussed. The influence of variations of some important process steps on the device performance is quantified. Finally, practical properties such as focal length control, long-term stability, hysteresis and dynamical response are presented and evaluated. The evaluation proves that the proposed membrane focusing device is suitable for high performance imaging (wavefront errors between λ/5–λ/10) with a large aperture (5 mm).
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Wang, Yancong, Jian Wang, Xuyan Bao, Bingyan Yu, and Yuming Ge. "An Advanced System-Level Testing for Roadside Multimodal Sensing and Processing in IoV." Wireless Communications and Mobile Computing 2022 (August 17, 2022): 1–18. http://dx.doi.org/10.1155/2022/7975523.

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Currently, there are mature test methods for specific sensing devices or processing devices in the Internet of Vehicles (IoV). However, when a system is combined with these different types of devices and algorithms for real scenarios, the existing device-level test results cannot reflect the comprehensive functional or performance requirements of the IoV applications at the system level. Therefore, novel application-oriented system-level evaluation indexes and test methods are needed. To this end, we extract the data processing functional entities into specific and quantifiable evaluation indexes by considering the IoV application functions and performance requirements. Then, we build a roadside sensing and processing test system in a real test zone to collect and process these evaluation indexes into accurate multidimensional ground-truth. According to the actual test results of multiple manufacturers’ solutions, our proposed test method is verified to effectively evaluate the performance of the system-level solutions in real IoV application scenarios. The unprecedented evaluation indexes, system-level test method, and the actual test results in this paper can provide an advanced reference for academics and industry.
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Park, Yu Jin, Seol Young Jung, Tae Yong Son, and Soon Ju Kang. "Self-Organizing IoT Device-Based Smart Diagnosing Assistance System for Activities of Daily Living." Sensors 21, no. 3 (January 25, 2021): 785. http://dx.doi.org/10.3390/s21030785.

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Activity of daily living (ADL) is a criterion for evaluating the performance ability of daily life by recognizing various activity events occurring in real life. However, most of the data necessary for ADL evaluation are collected only through observation and questionnaire by the patient or the patient’s caregiver. Recently, Internet of Things (IoT) device studies using various environmental sensors are being used for ADL collection and analysis. In this paper, we propose an IoT Device Platform for ADL capability measurement. Wearable devices and stationary devices recognize activity events in real environments and perform user identification through various sensors. The user’s ADL data are sent to the network hub for analysis. The proposed IoT platform devices support many sensor devices such as acceleration, flame, temperature, and humidity in order to recognize various activities in real life. In addition, in this paper, using the implemented platform, ADL measurement test was performed on hospital patients. Through this test, the accuracy and reliability of the platform are analyzed.
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Jung, Dong Eun, Chanuk Lee, Kwang Ho Lee, Minjae Shin, and Sung Lok Do. "Evaluation of Building Energy Performance with Optimal Control of Movable Shading Device Integrated with PV System." Energies 14, no. 7 (March 24, 2021): 1799. http://dx.doi.org/10.3390/en14071799.

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Among the envelope components (e.g., walls, roofs, floors, and windows, etc.) affecting the cooling and heating load of buildings, windows are the most thermally vulnerable. Shading devices can minimize the thermal load on windows due to solar radiation and decrease radiation effects. However, the load changes due to convection and conduction should be considered. Therefore, when a shading device is applied to a window, control logic for thermal blocking and heat retention is necessary to prevent the load changes. In addition, by combining the opposite features of photovoltaic (PV) that require solar radiation and the shading device to block solar radiation, energy-saving and production can be achieved simultaneously. Therefore, this study minimized the thermal effects of windows using a movable shading device integrated with PV and evaluated the PV power generation. This study evaluated the effects on window heat transfer by applying artificial intelligence techniques, which have recently attracted attention, to system operation. To achieve this, artificial neural network (ANN)-based control logic was developed, and the control performance of the system was assessed using simulations. In ANN control, the window heat transfer was 86.3% lower in a cooling period and 9.7% lower in a heating period compared with that of a shading device fixed at 45°. Furthermore, the PV system produced 3.0 to 3.1% more electric power under optimal control during the cooling period.
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Bogseth, Amanda, Jian Zhou, and Ian Papautsky. "Evaluation of Performance and Tunability of a Co-Flow Inertial Microfluidic Device." Micromachines 11, no. 3 (March 10, 2020): 287. http://dx.doi.org/10.3390/mi11030287.

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Microfluidics has gained a lot of attention for biological sample separation and purification methods over recent years. From many active and passive microfluidic techniques, inertial microfluidics offers a simple and efficient method to demonstrate various biological applications. One prevalent limitation of this method is its lack of tunability for different applications once the microfluidic devices are fabricated. In this work, we develop and characterize a co-flow inertial microfluidic device that is tunable in multiple ways for adaptation to different application requirements. In particular, flow rate, flow rate ratio and output resistance ratio are systematically evaluated for flexibility of the cutoff size of the device and modification of the separation performance post-fabrication. Typically, a mixture of single size particles is used to determine cutoff sizes for the outlets, yet this fails to provide accurate prediction for efficiency and purity for a more complex biological sample. Thus, we use particles with continuous size distribution (2–32 μm) for separation demonstration under conditions of various flow rates, flow rate ratios and resistance ratios. We also use A549 cancer cell line with continuous size distribution (12–27 μm) as an added demonstration. Our results indicate inertial microfluidic devices possess the tunability that offers multiple ways to improve device performance for adaptation to different applications even after the devices are prototyped.
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Dissertations / Theses on the topic "Electronic device and system performance evaluation"

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Doughty, Shaun Raymond. "Development and performance evaluation of a multistatic radar system." Thesis, University College London (University of London), 2008. http://discovery.ucl.ac.uk/1444153/.

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Multistatic radar systems are of emerging interest as they can exploit spatial diversity, enabling improved performance and new applications. Their development is being fuelled by advances in enabling technolo gies in such fields as communications and Digital Signal Processing (DSP). Such systems differ from typical modern active radar systems through consisting of multiple spatially diverse transmitter and re ceiver sites. Due to this spatial diversity, these systems present challenges in managing their operation as well as in usefully combining the multiple sources of information to give an output to the radar operator. In this work, a novel digital Commercial Off-The-Shelf (COTS) based coherent multistatic radar system designed at University College London, named 'NetRad', has been developed to produce some of the first published experimental results, investigating the challenges of operating such a system, and determining what level of performance might be achievable. Full detail of the various stages involved in the combination of data from the component transmitter-receiver pairs within a multistatic system is investigated, and many of the practical issues inherent are discussed. Simulation and subsequent experimental verification of several centralised and decentralised detec tion algorithms in terms of localisation (resolution and parameter estimation) of targets was undertaken. The computational cost of the DSP involved in multistatic data fusion is also considered. This gave a clear demonstration of several of the benefits of multistatic radar. Resolution of multiple targets that would have been unresolvable in a conventional monostatic system was shown. Targets were also shown to be plotted as two-dimensional vector position and velocities from use of time delay and Doppler shift information only. A range of targets were used including some such as walking people which were particularly challenging due to the variability of Radar Cross Section (RCS). Performance improvements were found to be dependant on the type of multistatic radar, method of data fusion and target characteristics in question. It is likely that future work will look to further explore the optimisation of multistatic radar for the various measures of performance identified and discussed in this work.
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Garner, Robin S. "A Comparative Analysis of Data Collection Systems Used in Radiography Educational Programs and the Role Mobile Electronic Devices Play." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/etd/2592.

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Each radiography program has a system to collect important data from didactic and clinical settings in order to accurately assess the progress and success of students, provide the needed student intervention, and provide accreditation agencies with appropriate documentation that demonstrates student success in reaching program learning outcomes. The purpose of this research study was to determine the method of data collection and documentation used by radiography programs to evaluate student progress and to examine if MEDs play a role in evaluating and documenting student skills at the point of care. The majority of radiography programs in this study were using paper methods for data collection and program directors reported value in using MEDs in clinical education but revealed that barriers still exist and will need to be addressed in order to increase their usage in clinical education.
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Dhandapani, Mangayarkarasi. "Performance evaluation of high performance parallel I/O." Master's thesis, Mississippi State : Mississippi State University, 2003. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07072003-155031/unrestricted/mythesis.pdf.

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Hietpas, Jill S. "Evaluation of the electronic performance support system (EPSS) for the training department at Company A." Online version, 2003. http://www.uwstout.edu/lib/thesis/2003/2003hietpasj.pdf.

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Bork-Ceszlak, Krzysztof, and Tadeusz Żydanowicz. "Multisensory Expert-Based Support System for the Firefighter’s Training Performance Evaluation." Thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-17137.

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The primary purpose of this thesis work is to design and implement a system supporting the fire-fighter’straining evaluation. The solution presented in this report comprises a real-time locating system andInertial Measurement Unit that collect the training data and an application built with the Unity3D gameengine used for processing. Before the presented application can process any data, a training facility must be recreated, and atrainer or an expert must define training guidelines, such as zones that a trainee must visit, objectshe/she has to see, and the required execution time. After this preparation and completed trainingsession, collected data is processed and the visualization together with evaluation process begins. Theprogram visualizes trainee’s position and his/her field of view and evaluates his performance. For thelatter, it uses the Unity3D collision detection feature. After the evaluation, the trainer can see detailedresults with recorded time stamps, and using them, he/she can fast forward to specific, important points,reducing the time to analyze trainee’s performance throughout the whole training. Tests which the authors conducted confirm that the built system meets requirements and is useful forevaluation of the trainee’s performance.
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Campbell, Alistair B. "Performance enhancement of the task assessment process through the application of an electronic performance support system." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2008. https://ro.ecu.edu.au/theses/18.

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Higher education in Australia, as for many other countries, has changed greatly over the last 20 years at all levels and in many areas of operation including teaching, learning and assessment. The driving forces for these changes have been both internal and external, and have included factors such as: the increasing student population; the increasing use of part-time staff; a reduction in government funding; an increased expectation of institutional accountability; and the growing access and use of information and communication technologies (ICT) in teaching and learning. Assessment has not escaped these changes but in many cases has not kept up with exemplary and recommended practice. This is especially so in the specific area of task assessment that involves professional judgement, where assessment is a timeconsuming, expensive, poorly managed, and a stressful professional activity, and is often a negative emotional experience for both learners and educators.
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Yakin, Ilker. "The Design, Development And Evaluation Of An Electronic Performance Support System (epss) For The Crime Scene Investigation Unit." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12615307/index.pdf.

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The purpose of this study is to design, develop and evaluate an electronic performance support system (EPSS) for the crime scene investigation unit (CSI). For this purpose, a sequential explanatory strategy as a procedure of the mixed method design was used in analysis and evaluation of the EPSS. The research was composed of three main phases: analysis
design, development and implementation, and evaluation of the EPSS. In first phase composed of performance and cause analyses, the CSI Unit&rsquo
s existing information, and contributing causal performance factors based on Gilbert&rsquo
Behavior Engineering Model were explored. In performance analysis phase, official documentation of the CSI Unit was reviewed. As for cause analysis, the survey and focus group interviews were conducted to 1176 and 22 CSI officers, respectively. These data were analyzed using with both quantitative and qualitative methods to facilitate the selection of the most appropriate intervention and its components. Analyses results revealed that 14 basic influences grouped under the workplace and competency on human behavior impacted performance of the officers. Based on these results, an EPSS composed of intrinsic, extrinsic and external levels, and support components was designed and developed in the second phase. Having been implemented, the evaluation of the EPSS based on the Kirkpatrick&rsquo
Four Levels of Evaluation Model was conducted v to determine the overall impact, perceived benefits, and effectiveness of the intervention in third phase. In this phase, a survey, interviews, computer logs and a checklist were used so as to assess the accomplishment of the EPSS. While the survey and the checklist were administered to the 191 officers and 2 experts from the field, the interviews were conducted with 12 officers. Evaluation results admitted that the CSI officers&rsquo
reactions were very positive to the EPSS. While, an intrinsic support made a major contribution to their productivity, establishing standardization would be perceived as the major impact of the EPSS. Lastly, increasing identity and simplifying criminal justice system were the two main impact factors on the society that the system would influence positively.
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Afacan, Gulgun. "E-performance Of Turkey And A New E-transformation Metric System." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/2/12610683/index.pdf.

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Affected by continuous developments and innovations in information and communication technologies, governments have initiated the e-transformation process to adopt the knowledge based economy and to be competitive in global world. Throughout their journey of e-transformation, governments need to learn where they are in order to shift their position to advanced level. To assist governments in their evaluation of e-transformation, this thesis offers a metric system derived from some of the well known e-government evaluation studies. The system proposed is composed of metrics distributed into six main categories: &ldquo
Technology Infrastructure&rdquo
, &ldquo
e-Society&rdquo
, &ldquo
Human Capital&rdquo
, &ldquo
Political and Regulatory Environment&rdquo
, &ldquo
Economy Environment&rdquo
, and &ldquo
Online Services and Applications&rdquo
. Set of metrics to be attached in these categories are determined in terms of widely recognized measures of the tools reviewed. In order to implement the system, 30 countries are analyzed gathering data published by major research institutions. Additionally, this thesis examines Turkey&rsquo
s level on e-transformation from the perspectives of e-government evaluation studies reviewed.
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Ferezin, Andrea Carla Schiavoni. "Implantação do sistema eletrônico de avaliação de desempenho dos servidores da área médica no Hospital das Clínicas de Ribeirão Preto: desafios e potencialidades." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/17/17157/tde-29032018-103624/.

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Investir na capacidade de identificação dos diferentes níveis de desempenho dos servidores de uma Instituição é uma das mais importantes práticas da gestão de recursos humanos na atualidade. O empregador busca caracterizar os diferentes níveis de desempenho e utiliza esta informação da maneira construtiva visando à melhoria de processos e resultados para a Instituição. A avaliação regular de desempenho é uma das formas de identificar e valorizar as boas práticas que se alinham com a missão e valores da Instituição, e prover devolutiva para corrigir rumos e fazer ajustes necessários. Existem várias formas de se fazer avaliação de desempenho dos membros de uma equipe de trabalho, entretanto a tendência tem sido a utilização de sistemas informatizados que aumentam a capacidade de gerenciamento dos dados coletados, controle e feedback das avaliações aos servidores. Recentemente implantou-se o Sistema Eletrônico de Avaliação de Desempenho (SEAD) para os servidores da área médica, no Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (HCFMRP-USP), com o intuito de atender a Lei Complementar 1193/2013, que exige a avaliação de desempenho dos médicos do Estado de São Paulo para fins de pagamento do Prêmio de Produtividade Médica (PPM). O objetivo é descrever e caracterizar o SEAD, além de avaliar os resultados dos primeiros anos de sua implementação. Caracteriza-se como um estudo descritivo na parte inicial, onde foram apresentadas todas as etapas de planejamento e implementação do SEAD para avaliação dos médicos do HCFMRP-USP, inclusive com as principais diferenças entre o novo sistema e o sistema manual que havia previamente. Na etapa seguinte, de implementação, caracteriza-se por um estudo do tipo \"pesquisaação\" com duração de três anos em que diversos ajustes foram feitos a partir do que foi aprendido nas avaliações iniciais do próprio sistema. Na etapa final foram feitas entrevistas com os docentes avaliadores dos serviços com o maior número de médicos do HCRP. Este estudo foi aprovado pelo Comitê de Ética do HCRP. Dentre os resultados do estudo apresentaremos uma descrição detalhada do SEAD aplicado na área médica e as diferenças observadas em relação aos sistemas de avaliação anteriormente utilizados pelo HCRP. Diversas informações e indicadores foram obtidos em tempo real e disponibilidados para gestores médicos e a adminstração de recursos humanos do HCFMRP, tais como: o número de servidores avaliados, os avaliadores que realizaram as avaliações ou os avaliadores que não realizaram as avaliações, a quantidade de servidores avaliados por cada avaliador, quem foi avaliado, a nota obtida e o percentual de recebimento do PPM que cada médico do hospital recebeu. Os resultados dos primeiros anos de utilização e as melhorias que foram feitas no SEAD também estão descritas nos resultados deste estudo. A percepção dos avaliadores e usuários do sistema é de que o SEAD representou ganhos em termos de armazenamento de dados, acesso à informação para a tomada de decisões e principalmente por propiciar o direcionamento das políticas de incentivo aos médicos do HCRP alinhada com os interesses da própria instituição. De um modo geral os avaliadores que participaram voluntariamente do estudo avaliaram o SEAD de maneira bastante positiva. A avaliação de pessoal para fins de promoção ou premiação é sempre um desafio do ponto de vista pessoal e a disponibilidade de recursos que aumentam a transparência e promovem equidade com agilidade e simplicidade são extremamente importantes, especialmente para as organizações públicas.
Investing in the ability to identify the different levels of performance of an institution\'s servers is one of the most important human resources management practices today. The employer seeks to characterize the different levels of performance and uses this information in a constructive way aiming at improving processes and results for the Institution. Regular performance evaluation is one way to identify and value good practices that align with the Institution\'s mission and values, and to provide feedback to correct directions and make necessary adjustments. There are several ways to evaluate the performance of members of a work team. However, the tendency has been to use computerized systems that increase the capacity to manage the data collected, control and feedback of the evaluations to the servers. Recently the Electronic Performance Evaluation System (SEAD) was implanted for the medical staff, at the Hospital das Clínicas of the Medical School of Ribeirão Preto of the University of São Paulo (HCFMRP-USP), in order to comply with the Law Complementary Act 1193/2013, which requires the performance evaluation of physicians of the State of São Paulo for the purpose of payment of the Medical Productivity Award (PPM). The objective is to describe and characterize the SEAD, besides evaluating the results of the first years of its implementation. It is characterized as a descriptive study in the initial part, where all the SEAD planning and implementation steps for the evaluation of HCFMRP-USP physicians were presented, including the main differences between the new system and the manual system that had previously been presented. In the next stage of implementation, it is characterized by a three-year \"action-research\" study in which several adjustments were made based on what was learned in the initial evaluations of the system itself. In the final stage interviews were made with the teachers evaluating the services with the largest number of HCRP physicians. This study was approved by the HCRP Ethics Committee. Among the results of the study we will present a detailed description of the SEAD applied in the medical area and the differences observed in relation to the evaluation systems previously used by the HCRP. Various information and indicators were obtained in real time and available to HCFMRP medical managers and human resources management, such as: the number of evaluated servers, the evaluators who carried out the evaluations or the evaluators who did not carry out the evaluations, the amount of servers evaluated by each evaluator, who was evaluated, the grade obtained and the percentage of receipt of PPM that each hospital doctor received. The results of the first years of use and the improvements that have been made in SEAD are also described in the results of this study. The perception of the evaluators and users of the system is that the SEAD represented gains in terms of data storage, access to information for decision-making and, above all, to foster the orientation of policies to encourage HCRP physicians in line with the interests of the system itself institution. In general, evaluators who voluntarily participated in the study evaluated SEAD in a very positive way. Evaluating staff for promotion or reward is always a challenge from a personal standpoint, and the availability of resources that increase transparency and promote equity with agility and simplicity are extremely important, especially for public organizations.
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10

MUBEEN, SAAD. "EVALUATION OF SOURCE ROUTING FOR MESH TOPOLOGY NETWORK ON CHIP PLATFORMS." Thesis, Jönköping University, JTH, Computer and Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-9591.

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Network on Chip is a scalable and flexible communication infrastructure for the design of core based System on Chip. Communication performance of a NoC depends heavily on the routing algorithm. Deterministic and adaptive distributed routing algorithms have been advocated in all the current NoC architectural proposals. In this thesis we make a case for the use of source routing for NoCs, especially for regular topologies like mesh. The advantages of source routing include in-order packet delivery; faster and simpler router design; and possibility of mixing non-minimal paths in a mainly minimal routing. We propose a method to compute paths for various communications in such a way that traffic congestion is avoided while ensuring deadlock free routing. We also propose an efficient scheme to encode the paths.

We developed a tool in Matlab that computes paths for source routing for both general and application specific communications. Depending upon the type of traffic, this tool computes paths for source routing by selecting best routing algorithm out of many routing algorithms. The tool uses a constructive path improvement algorithm to compute paths that give more uniform link load distribution. It also generates different types of traffics. We also developed a simulator capable of simulating source routing for mesh topology NoC. The experiments and simulations which we performed were successful and the results show that the advantages of source routing especially lower packet latency more than compensate its disadvantages. The results also demonstrate that source routing can be a good routing candidate for practical core based SoCs design using network on chip communication infrastructure.

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Books on the topic "Electronic device and system performance evaluation"

1

Kant, K. Introduction to computer system performance evaluation. New York: McGraw-Hill, 1992.

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2

Cady, John. Computer system performance management and capacity planning. New York: Prentice Hall, 1989.

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Cady, John. Computer system performance management and capacity planning. New York: Prentice Hall, 1990.

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1969-, Mark Brian L., and Kobayashi Hisashi, eds. System modeling and analysis: Foundations of system performance evaluation. Upper Saddle River, N.J: Pearson Prentice Hall, 2008.

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1945-, Gelenbe E., France. Secrétariat d'Etat chargé des universités., and Laboratoire ISEM, eds. Performance '84: Models of computer system performance : proceedings of the Tenth International Symposium on Models of Computer System Performance, Paris, France, 19-21 December 1984. Amsterdam: North-Holland, 1985.

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1933-, Hsiao David K., and Marshall Roger G, eds. Design analysis and performance evaluation methodologies for database computers. Englewood Cliffs, N.J: Prentice-Hall, 1987.

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Katinka, Wolter, ed. Formal methods and stochastic models for performance evaluation: Fourth European Performance Engineering Workshop, EPEW 2007, Berlin, Germany, September, 2007 ; proceedings. Berlin: Springer, 2007.

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Controller, San Francisco (Calif ). Office of the. Memorandum: Performance measures of community safety cameras and the ShotSpotter gunshot location system. San Francisco: Office of the Controller, 2008.

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Bailey, David H. Performance tuning of scientific applications. Boca Raton: CRC Press, 2011.

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Performance tuning of scientific applications. Boca Raton: CRC Press, 2011.

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Book chapters on the topic "Electronic device and system performance evaluation"

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Zhao, Jianli, Zhexing Chen, Yong Liu, Yilin Wang, Yisheng Zhang, and Liang Wang. "Digital Twin System for Service Performance Evaluation of Anti-vibration Device." In Lecture Notes in Electrical Engineering, 464–70. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1870-4_49.

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Haris, Sharil Izwan, Mohd Hanif Che Hassan, Fauzi Ahmad, and Ahmad Kamal Mat Yamin. "Performance Evaluation of Vehicle Braking System Employing an Electronic Wedge Brake Mechanism." In Lecture Notes in Mechanical Engineering, 269–73. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3179-6_49.

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Kassim, A. M., N. N. Ayub, A. Z. Shukor, M. R. Yaacob, W. M. Bukhari, M. A. A. Abid, A. H. Azahar, D. A. Prasetya, T. Yasuno, and A. K. R. A. Jaya. "Performance Evaluation of Energy Harvesting Method for Wireless Charging System in Wearable Travel Aid Device for Visually Impaired Person." In Lecture Notes in Mechanical Engineering, 222–35. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8954-3_22.

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Schirmer, Pascal A., and Iosif Mporas. "Binary versus Multiclass Deep Learning Modelling in Energy Disaggregation." In Springer Proceedings in Energy, 45–51. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63916-7_6.

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AbstractThis paper compares two different deep-learning architectures for the use in energy disaggregation and Non-Intrusive Load Monitoring. Non-Intrusive Load Monitoring breaks down the aggregated energy consumption into individual appliance consumptions, thus detecting device operation. In detail, the “One versus All” approach, where one deep neural network per appliance is trained, and the “Multi-Output” approach, where the number of output nodes is equal to the number of appliances, are compared to each other. Evaluation is done on a state-of-the-art baseline system using standard performance measures and a set of publicly available datasets out of the REDD database.
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Daneshzand, Mohammad, Lucia I. Navarro de Lara, Qinglei Meng, Sergey Makarov, Işıl Uluç, Jyrki Ahveninen, Tommi Raij, and Aapo Nummenmaa. "Experimental Verification of a Computational Real-Time Neuronavigation System for Multichannel Transcranial Magnetic Stimulation." In Brain and Human Body Modelling 2021, 61–73. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-15451-5_4.

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AbstractMultichannel Transcranial Magnetic Stimulation (mTMS) provides the capability of stimulating multiple cortical areas simultaneously or in rapid succession by electronic shifting of the E-field hotspots. However, in order to target the desired brain region with intended intensity, the intracranial E-field distribution for all coil elements needs to be determined and subsequently combined to electronically synthesize a ‘hot spot’. Here, we assessed the performance of a computational TMS navigation system that was used to track the position of a 2×3-axis TMS coil array with respect to subject’s head and was integrated with a real-time high-resolution E-field calculation engine to predict the activated cortical regions as the array is moved around the subject’s head. For fast evaluation of the E-fields with high-resolution head models, we employed our previously proposed Magnetic Stimulation Profile (MSP) approach. Our preliminary tests demonstrated the capability of this system to precisely calculate and render E-fields with a frame rate of 6 Hz (6 frames/second). Furthermore, we utilized two z-elements from the 3-axis coils to form a figure of eight coil type and utilized it for suprathreshold stimulation of the hand first dorsal interosseous (FDI) muscle on a healthy human. The recorded motor evoked potentials (MEPs) showed clear activation of the FDI muscle comparable to the activation elicited by a commercial TMS coil. The estimated cortical E-field distributions showed a good agreement between the commercial TMS coil and the two z-elements of the 2×3-axis array.
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Sivagami, Arasu, Michael Angelo Kandavalli, and Bhaskarrao Yakkala. "Design and Evaluation of an Automated Monitoring and Control System for Greenhouse Crop Production." In Next-Generation Greenhouses for Food Security. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97316.

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An embedded system integrated with sensors based on nanomaterial is proposed for closely monitoring and control microclimate parameters 24 hours a day to maximise production over the whole crop growth season by introducing greenhouse for the cultivation of plants or specific plant species. The system will also eliminate errors in human intervention to optimise production of crops. This system consists of sensors and actuators, an Analogue to Digital Converter (ADC) and a Raspberry Pi. The system will determine whether a defined threshold is passed by any climate parameter and systematically changes via the controller. The current work reduces human input through automated irrigation to optimally utilize a scarce resource, namely water. Climatic parameters for plant growth such as, moisture, humidity, temperature, water pressure in drip pipe, soil salinity etc. are monitored and optimized. Furthermore, work was extended to include GSM to control the entire farm remotely. For its success, it is very important to choose a greenhouse location. For instance, the problems are quite different when choosing an adjoining greenhouse, for instance a sunroom or greenhouse. The greenhouse location should be chosen for sunlight, proximity to power and water sources, wind, drain and freeze pockets, and the proximity of the garden and house. The intention behind accomplishment and devise of GSM based Fertigation System is to construct and evaluate the requirement of water in the yield as farming is the major resource of production which habitually depends on the water accessibility. Irrigation of water is usually done by manual method. To ease the work of the farmer GSM based automatic Fertigation (includes chemigation too) system can be implemented so that water wastage can be reduced and also the fertilizer can be added accordingly. Also the Soil Salinity can be checked and reduced if exceeds certain limit. By using GSM, only GSM command via GSM mobile can control the start and stop action of a motor that feeds the field with the water. GSM is used for controlling the entire process and the entire system backbone. It can be used from any distance to control irrigation. The results are assessed by electronic simulator PROTEUS using the desired optimised parameters, the design of this automated greenhouse system with PIC controller. As the inputs to the microcontroller and as an LCD screen record the respective outputs, the model produces a soil moisture sensor, light sensor and temperature sensor. The system performance is accurate and repeatable for measuring and controlling the four parameters that are crucial for plant growth - temperature, humidity, soil moisture and light intensity. With the reduction in electricity consumption, maintenance and complexity, and a flexible and precise environment control form for agriculture, the new system successfully cured quite a couple of defects in existing systems. Nano composite film sensors (Graphene and Graphene mixed in order to optimise the input of fertilisers for chemical composition determination. Using nano technology in agriculture enforces the firm bond between the engineer and farmer. Nano material film-based gas sensors were used to measure the presence of oxygen and CO2.using graphene nano composite sensors integrated into an embedded system, to detect the presence and levels of gases. Improve crop growth with combined red and blue light for lighting under the leavened and solar-powered LED lighting modules. This was achieved by graph/solar cells. The light was measured at the photosynthesis flux (PPFD) of 165 μmol m-2 s-1 by 10 cm of its LED module. LED lights were provided between 4:00 a.m. and 4:00 p.m. in the daytime treatments and night treatments from 10 to 10 hours. The use of the nighttime interlumination of LEDs was also economical than the interlumination of charts. Thus, nightlighting LEDs can effectively improve plant growth and output with less energy than the summer and winter times. Solar panels are best functioning during times of strong sunlight today, but begin to wan when they become too hot and cloudy. By allowing Solar Panels to produce electricity during harsh weather conditions and increase efficiency, a breakthrough in graphene-based solar panels can change everything. Ultimately with a fully autonomous system, agricultural productivity and efficiency, the length of the growing season, energy consumption and water consumption were recorded and monitored by exporting the data over GSM environment. With the steady decrease in the cost of high-performing hardware and software, the increased acceptance of self-employed farming systems, and the emerging agricultural system industry, the results will be reliable control systems covering various aspects of quality and production quantity.
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Jerraya, Ahmed, and Iuliana Bacivarov. "Performance Evaluation Methods for Multiprocessor System-on-Chip Designs." In Electronic Design Automation for IC System Design, Verification, and Testing, 85–98. CRC Press, 2017. http://dx.doi.org/10.1201/b19569-6.

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Khan, Baseem, Samuel Degarege, Fsaha Mebrahtu, and Hassan Alhelou. "Energy Storage System and Its Power Electronic Interface." In Research Anthology on Smart Grid and Microgrid Development, 183–95. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-3666-0.ch009.

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This chapter examines the modeling and simulation of energy storage (battery, flywheel, etc.) systems interfaced to the power grid by using power electronic device, like chopper module, Rectifier module, and filter circuits, which are essential to the load balance between supply and demand, and to eliminate harmonics and to ensure efficient, cost effective, and reliable operations. Energy storage system in power grid is the same as memory in computer system. Energy efficiency is a key performance indicator for energy storage system. The energy storage system is the most promising component to enhance the system reliability and flexibility.
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Khan, Baseem, Samuel Degarege, Fsaha Mebrahtu, and Hassan Alhelou. "Energy Storage System and Its Power Electronic Interface." In Handbook of Research on New Solutions and Technologies in Electrical Distribution Networks, 309–21. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1230-2.ch016.

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This chapter examines the modeling and simulation of energy storage (battery, flywheel, etc.) systems interfaced to the power grid by using power electronic device, like chopper module, Rectifier module, and filter circuits, which are essential to the load balance between supply and demand, and to eliminate harmonics and to ensure efficient, cost effective, and reliable operations. Energy storage system in power grid is the same as memory in computer system. Energy efficiency is a key performance indicator for energy storage system. The energy storage system is the most promising component to enhance the system reliability and flexibility.
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Bandopadhyay, Tapati, and Pradeep Kumar. "SLA Monitoring of Presence-Enabled Services." In Electronic Services, 705–17. IGI Global, 2010. http://dx.doi.org/10.4018/978-1-61520-967-5.ch042.

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The concept of presence was initially associated with an instant messaging service, allowing an end user to recognize the presence of a peer online to send or receive messages. Now the technology has grown up to include various services like monitoring performance of any type of end user device, and services are accessible from anywhere, any time. The need for enhanced value remains the driving force behind these services, for example, Voice over Internet Protocol (VoIP) services, which is drawing tremendous research interest in services performance evaluation, measurement, benchmarking, and monitoring. Monitoring service level parameters happens to be one of the most interesting application-oriented research issues because various service consumers at the customer companies/end users’ level are finding it very difficult to design and monitor an effective SLA (Service Level Agreement) with the presence-enabled service providers. This chapter focuses on to these specific issues and presents a new approach of SLA monitoring through Data Envelopment Analysis (DEA). This extreme point approach actually can work much better in the context of SLA monitoring than general central-tendency-based statistical tools, a fact which has been corroborated by similar application examples of DEA presented in this chapter and has therefore it acts as the primary motivation to propose this new approach. Towards this end, this chapter first builds up the context of presence-enabled services (Day, Rosenburg, & Sugano, 2000), its SLA and SLA parameters, and the monitoring requirements. Then it explains the basics of DEA and its application in various other engineering and services context. Ultimately, a DEA application framework for monitoring an SLA of presence-enabled services is proposed which can serve as a clear guideline for the customers of presence-enabled services, not only for SLA monitoring but also at various other stages of implementing presence-enabled services frameworks. This approach exploits the definitive suitability of the application of DEA methods to presence-enabled service monitoring problems, and can be easily implemented by the industry practitioners.
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Conference papers on the topic "Electronic device and system performance evaluation"

1

Elliott, Matthew, and Bryan P. Rasmussen. "Evaporator Superheat Regulation via Emulation of Semi-Active Flow Control." In ASME 2009 Dynamic Systems and Control Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/dscc2009-2520.

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Proper regulation of evaporator superheat is essential to ensuring safe and efficient operation of vapor compression cooling systems. Typical mechanical control devices may behave poorly under transient disturbances or as operating conditions vary, degrading system performance. Electronic expansion valves partially alleviate these problems by allowing more sophisticated control approaches, but frequent valve adjustments raise concerns about device longevity. A cascaded control approach to superheat regulation has been shown to provide significant improvements in superheat control, utilizing a hybrid of mechanical (passive) and electronic (active) feedback devices. This paper examines the emulation of a semi-active flow control device using a MEMs based actuator with high bandwidth, few moving parts, and no risk of fatigue failure. Experimental evaluation reveals this to be a comparable approach to the hybrid valve design. Moreover, further examination reveals that actuator characteristics are the limiting factor in achieving similar levels of performance using standard electronic valves.
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Murata, Akira, Hiroshi Saito, and Yoji Okita. "Water-Mist-Cooled Heat Sink for Autonomous Air-Cooling System (AACS) of More Electric Aircraft (MEA)." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-56578.

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The More Electric Aircraft (MEA) is a system architecture concept for the aircraft that reduces fuel consumption and environmental load while improving safety, reliability, and maintainability. MEA architecture replaces some of the conventional hydraulic and/or mechanical control system with electric motor-driven system, integrates system power management into the aircraft/engine controls, and optimizes the aircraft geometry by flexibly arranging the accessory devices. The primary challenge to realize the MEA concept is how to manage the heat from these additional power electronic devices. The authors’ group proposed novel cooling system, the Autonomous Air-Cooling System (AACS) which cools the power electronics of the motor devices distributed in the aircraft. In AACS, each power electronic device (e.g. motor controller) is air-cooled by heat sinks connected to compact blowers. This system is very simple and efficient since it re-uses the cabin air and needs no additional coolant. One of the key technologies which realize AACS is an efficient heat sink. In this study, at first the performance evaluation targeting a single-aisle 180-seater aircraft was performed. In the analysis, a plate-fin heat sink was adopted, and the pressure loss and heat transfer was estimated by using empirical correlations. In the analysis, the value of heat generation was assumed from power demand for each operation condition, and the required mass flow rate of cooling air was calculated so as for the enclosure temperature of the power electronics to be 80°C which was the allowable maximum temperature of the motor controller. The effect of the fin geometry on the cooling performance was also examined by varying the geometric parameters (fin height, thickness, and spacing). In order to further enhance the cooling performance without increasing the pressure loss, the water-mist injection to the cooling air flow was adopted and its effect was analytically confirmed. In addition, the effectiveness of the water-mist injection on the cooling performance was verified by performing experiments for a plate-fin heat sink manufactured by a wire electric discharge method.
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Suzuki, Daichi, Takashi Nagumo, Shinji Honami, and Shoji Kamiunten. "An Evaluation of Auxiliary Part Configuration in the Micro Flow Sensor by Using Micro PIV." In ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems collocated with the ASME 2005 Heat Transfer Summer Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ipack2005-73194.

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The paper describes the configuration effects of the auxiliary parts on the flow behavior around the microfluidic device. Recent development of the devices in MEMS is noticeable. The devices are manufactured in more complicated configuration and arrangement with the auxiliary part for the requirement of higher performance. An evaluation of the flow field around the microfluidic device is strongly required in MEMS design. The aim of the paper is to clarify the effect of the auxiliary part arrangement on the flow field around the micro flow sensor which has both the sensing element and the auxiliary parts such as the pins, pillars and electric bonding wires. The flow around the sensor is measured by using the Micro Particle Image Velocimetry (PIV) system. We investigate four types of the micro flow sensor with different configuration and arrangement of the pin, the bonding wires and the pillars. The result shows that the effect of the supporting pillars is negligible.
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Sahini, Manasa, Dereje Agonafer, and Vijayalan Pandiyan. "Thermal Performance Evaluation of Three Types of Novel End-of-Aisle Cooling Systems." In ASME 2017 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems collocated with the ASME 2017 Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/ipack2017-74016.

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Data centers house a variety of compute, storage, network IT hardware where equipment reliability is of utmost importance. Heat generated by the IT equipment can substantially reduce its service life if Tjmax, maximum temperature that the microelectronic device tolerates to guarantee reliable operation, is exceeded. Hence, data center rooms are bound to maintain continuous conditioning of the cooling medium becoming large energy consumers. The objective of this work is to introduce and evaluate a new end-of-aisle cooling design which consists of three cooling configurations. The key objectives of close-coupled cooling are to enable a controlled cooling of the IT equipment, flexible as well as modular design, and containment of hot air exhaust from the cold air. The thermal performance of the proposed solution is evaluated using CFD modeling. A computational model of a small size data center room has been developed. Larger axial fans are selected and placed at rack-level which constitute the rack-fan wall design. The model consists of 10 electronic racks each dissipating a heat load of 8kw. The room is modeled to be hot aisle containment i.e. the hot air exhaust exiting for each row is contained and directed within a specific volume. Each rack has passive IT with no server fans and the servers are cooled by means of rack fan wall. The cold aisle is separated with hot aisle by means of banks of heat exchangers placed on the either sides of the aisle containment. Based on the placement of rack fans, the design is divided to three sub designs — case 1: passive heat exchangers with rack fan walls; case 2: active heat exchangers (HXs coupled with fans) with rack fan walls; case 3: active heat exchangers (hxs coupled with fans) with no rack fans. The cooling performance is calculated based on the thermal and flow parameters obtained for all three configurations. The computational data obtained has shown that the case 1 is used only for lower system resistance IT. However, case 2 and Case 3 can handle denser IT systems. Case 3 is the design that can consume lower fan energy as well as handle denser IT systems. The paper also discusses the cooling behavior of each type of design.
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Yun, Gangsik, Dongho Oh, Youngjin Kim, JiHyeon Kim, and TaeHyeong Kim. "Mechanical Feasibility of Airfoil Shaped Energy Harvesting Device Based on Aerodynamic Instability Phenomena." In ASME 2017 Conference on Information Storage and Processing Systems collocated with the ASME 2017 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/isps2017-5456.

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Unsteady aerodynamic forces generally have been treated as subjects to avoid or control. However, more energy resources could be gained if humans could use the unsteady aerodynamic force that can destroy massive structures. In this paper, an energy harvesting device was proposed using the flutter phenomenon, which is one of the phenomena of aerodynamic instability. Unlike existing flutter-based energy harvesting devices, the proposed device can be operated regardless of wind direction. A prototype was developed for a performance evaluation in a wind tunnel, and displacement measurements were taken over varying wind speeds.
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Takahashi, Yuya, Junnosuke Okajima, Yuka Iga, Atsuki Komiya, Wu-Shung Fu, and Shigenao Maruyama. "Study of Supersonic Micro-Channel for Cooling Electronic Devices." In ASME 2013 11th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icnmm2013-73134.

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In this study, we focus on a micro-scale cooling device using a supersonic single phase gas flow. The single phase gas cooling system has advantages for cooling electronics device in a micro-scale. Generally, the forced convective heat transfer by single phase gas flow has a lower heat transfer coefficient than other heat transfer mechanisms. However, the heat transfer rate can be largely improved with a low temperature flow that is generated by isentropic expansion in supersonic nozzle. The objective of this study is to conduct a numerical evaluation of the possibility of this cooling system with a supersonic air flow through a heated micro-fin array. In order to calculate the supersonic flow inside the nozzle and evaluate the effect of the nozzle shape on the heat transfer, two types of nozzles are designed. One nozzle is a typical supersonic nozzle called Laval nozzle. The other is named Bump nozzle which has a simple arc shape at the throat. The channel size of both nozzles are about 200 μm in width and 2743.1 μm in length. In order to estimate the cooling performance, the numerical simulations were conducted by using ANSYS FLUENT 12.1 with the density-based Roe-FDS method. The inlet pressure, outlet pressure, and total pressure were set to 290 kPa, 100 kPa, and 367.1 kPa, respectively. The stagnation temperature and wall temperature were assumed 300 K and 350 K, respectively. The values of bulk mean temperature and Nusselt number were estimated. In both nozzles, the calculated bulk mean temperature was about 230 K and the Nusselt number was 7.54, which is the theoretical value of laminar forced convection between the parallel plates. The results showed that the Bump nozzle had almost the same cooling performance as the Laval nozzle in spite of its simple geometry in the each single channel. In addition, the Bump nozzle can have 4 times the number of channels the Laval nozzle configuration can occupy the same area because of its shape. This indicates that cooling performance of a device that includes the Bump nozzle geometry is higher than that of the Laval nozzle.
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Mi, Jia, Qiaofeng Li, Mingyi Liu, Xiaofan Li, and Lei Zuo. "Performance Evaluation of Suspended Energy Harvesting Backpack Using Half-Wave Mechanical Rectification." In ASME 2020 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/dscc2020-3194.

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Abstract Human beings are becoming more and more dependent on electronic devices, such as smart phones, smart watches, GPS, etc. This paper presents the design, modeling and testing of a novel suspended energy harvesting backpack using half-wave mechanical rectification. The proposed half-wave rectification mechanism can convert bidirectional linear vibration into unidirectional rotation with nonlinear inertia. Compared with full-wave mechanical rectification, the proposed half-wave rectification is designed only to convert the motion in one of the vibration directions while remaining idle in the other direction. Numerical simulation shows the proposed half-wave rectification based suspended energy harvesting backpack can obtain about two times of the average output power as the previous full-wave rectification design while also maintaining larger output power in the wideband frequency range. Bench test results indicate that the proposed half-wave rectification-based energy harvesting backpack can harvest 6.7 W (peak)/2.1 W (average) under 2 Hz and 6 mm excitation with a 31.8 kg payload, which is a significant improvement compared with 1.9 W(peak)/0.9 W (average) for the counterpart of full-wave rectification system. In addition, bench test results also validate the energy harvesting in wideband frequency range. Treadmill tests demonstrate an average power range of 1.2–11.0 W under walking speeds of 3.2–6.4 km/h with a 13.6 kg payload.
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Kikuchi, Hiroki, Kazuhiko Sasagawa, and Kazuhiro Fujisaki. "Analysis for Evaluation of Threshold Current Density of Electromigration Damage in Taper-Shaped Metal Line." In ASME 2017 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems collocated with the ASME 2017 Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/ipack2017-74059.

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Metal lines used in integrated circuits (ICs) become narrow for raising the device performance. Due to scaling down of the ICs, current density and Joule heating are increased, which induces electromigration (EM) damage. EM is transportation phenomena of metallic atoms caused by electron wind under high current density. EM leads to hillock and void formation in the metal line, thus EM should be considered to evaluate the performances of the device safe. It is known that a value of threshold current density which is critical current density of the EM damage exists in via-connected and passivated lines. In this study, the effect of line geometry on the threshold current density is discussed in the case of taper-shaped line. The evaluation method of threshold current density is conducted based on numerical simulation technique with building-up processes of atomic density distribution in the metal line by using a governing parameter of EM damage. As the simulation results, threshold current density increased in the cases of shorter line length, lower temperature, and wider width in cathode side. Furthermore, a new parameter was proposed for simplified evaluation of the threshold current density in taper-shaped lines. The evaluation method is able to apply various line shapes and conditions and it is expected to use for confirmation of the reliability of the lines in circuit design processes.
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Johnson, Austin, Saravanan Sundaramoorthy, Kareem Ameen, Jess Nichols, Alex MacGregor, and Justin Fraczek. "Lessons Learned Using a Next Generation Active Sealing Device for Deepwater MPD Operations." In SPE/IADC International Drilling Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/204110-ms.

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Abstract This paper shares results from the first year of deepwater operations using an active sealing device purpose built for deepwater Managed Pressure Drilling (MPD). The active sealing device is a clean-sheet design approach. The first use of the system was performed in a narrow margin deepwater well in the Black Sea with subsequent wells in the Gulf of Mexico. This paper shares lessons learned from first year of operations. This paper discusses field operations, lessons learned, and post run evaluation of system performance. An overview of the design introduces system elements and briefly discusses system testing measures taken prior to field deployment. An overview of operations from the first year is provided, highlighting lessons learned, action items taken, and solutions implemented between wells. Analysis of the link between the testing and field results demonstrates the novel approach to testing and validity of assumptions made during the testing phase. Furthermore, methods of evaluating seal performance are discussed. The paper shares conclusions from the first year of active sealing device deployment. A non-rotating seal sleeve element design eliminates multiple high-wear rotating control device (RCD) components such as bearings and rotary seal as well as their associated failure modes.Redundant, active seal elements ensure wellbore seal quality throughout the seal assembly life.Active seal condition monitoring alerts the rig crew prior to failure to replace the seal assembly.Multi-modal seal control provides crew methods to reach total depth in contingency mode.Full-scale simulated drilling testing included the use of client equipment prior to first use.Testing procedures were designed to simulate drilling to mirror system use in a live well.First MPD well completed in 2019 in the Black Sea with subsequent wells in the Gulf of Mexico.Lessons learned from operations to applied in continuous improvement program.Novel approaches to assessing performance have been developed in order to provide consistent metrics.Learnings have been applied in subsequent wells to improve technology transfer to drilling contractors. The paper discusses other aspects of the program such as drilling contractor ownership vs. use of third (3rd) party systems, integration of the MPD equipment into the rig, and network architecture. Further, an algorithm has been developed to analyze system performance from electronic drilling recorder data to better characterize the effect of usage patterns of seal wear. These data demonstrate the validity of assumptions made during the development of the test procedures.
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Sheehan, Jessica, Douglas T. Queheillalt, and Pamela M. Norris. "An Evaluation of the Wicking Characteristics of Stochastic Open-Cell Nickel Foams." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15337.

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Heat pipes are a very efficient device which can be used for the rapid transfer of thermal energy. Small and microscale heat pipes are used in a variety of applications such as electronics and microprocessor coolers. As the size of the heat pipe devices increase, the volume and rate at which the working fluid is replenished in the evaporator region becomes an important parameter influencing the performance of the heat pipe system. Here, a stochastic open-cell nickel-foam has been evaluated for use as the wick material in heat pipes. The pore size of the open-cell nickel foam was modified via compression in the through thickness direction in order to evaluate its wicking characteristics and fluid flow resistance as a function of pore size. These properties are controlled by the effective pore size (controlled via through thickness compression) of the nickel foam. The equilibrium wicking height was measured by a simple flow experiment. The mass flow rate and the differential pressure of the crushed foams were measured at each thickness to generate a friction factor as a function of pore size. The equilibrium wicking height results were compared to a simple analytical model of a single capillary tube and found to be in reasonable agreement and the friction factor followed the same trend as the equilibrium wicking height. The experiments were used to evaluate the suitability of stochastic open cell nickel foams as wicks for heat pipe systems.
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Reports on the topic "Electronic device and system performance evaluation"

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Paez, Kathryn, Rachel Shapiro, Lee Thompson, Erica Shelton, Lucy Savitz, Sarah Mossburg, Susan Baseman, and Amy Lin. Health System Panel To Inform and Encourage Use of Evidence Reports: Findings From the Implementation and Evaluation of Two Evidence-Based Tools. Agency for Healthcare Research and Quality (AHRQ), August 2022. http://dx.doi.org/10.23970/ahrqepchealthsystempanel.

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Abstract:
Objectives. The Agency for Healthcare Research and Quality (AHRQ) Evidence-based Practice Center (EPC) Program wants learning health systems (LHSs) to use the evidence from its reports to improve patient care. In 2018, to improve uptake of EPC Program findings, the EPC Program developed a project to enhance LHSs’ adoption of evidence to improve the quality and effectiveness of patient care. AHRQ contracted with the American Institutes for Research (AIR) and its partners to convene a panel of senior leaders from 11 LHSs to guide the development of tools to help health systems use findings from EPC evidence reports. The panel’s contributions led to developing, implementing, and evaluating two electronic tools to make the EPC report findings more accessible. AIR evaluated the LHSs’ use of the tools to understand (1) LHSs’ experiences with and impressions of the tools, (2) how well the tools helped them access evidence, and (3) how well the tools addressed barriers to LHS use of the EPC reports and barriers to applying the evidence from the reports. Data sources. (1) Implementation meetings with 6 LHSs; (2) interviews with 27 health system leaders and clinical staff who used the tools; and (3) website utilization metrics. Results. The tools were efficient and useful sources of summarized evidence to (1) inform systems change, (2) educate trainees and clinicians, (3) inform research, and (4) support shared decision making with patients and families. Clinical leaders appreciated the thoroughness and quality of the evidence reviews and view AHRQ as a trusted source of information. Participants found both tools to be valuable and complementary. Participants suggested optimizing the content for mobile device use to facilitate health system uptake of the tools. In addition, they felt it would be helpful to have training resources about tool navigation and interpreting the statistical content in the tools. Conclusions. The evaluation shows that LHSs find the tools to be useful resources for making the EPC Program reports more accessible to health system leaders. The tools have the potential to meet some, but not all, LHS evidence needs, while exposing health system leaders to AHRQ as a resource to help meet their information needs. The ability of the EPC reports to support LHSs in improving the quality of care is limited by the strength and robustness of the evidence, as well as the relevance of the report topics to patient care challenges faced by LHSs.
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