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作者： Joppin, Carole Hastings, Daniel E. Massachusetts Institute of Technology Cambridge MA 02139 United States Space Systems Laboratory Engineering Systems Division Technology and Policy Program France Engineering Systems Division Technology and Policy Program 39 bis avenue Gabriel Peri 92500 Rueil Malmaison France Engineering Systems Division Space Systems Laboratory 77 Massachusetts Avenue United States AIAA United States

From the Hubble Space Telescope (HST) example, a model of a serviceable scientific mission is developed to study on-orbit repair and upgrading, including spacecraft repair, payload instrument upgrading, and bus subsystems upgrading. Mission utility is measured by the onboard payload instrument discovery efficiency. A Monte Carlo simulation is used to model uncertainty in the arrival of new technologies, random spacecraft failures, and catastrophic failures of a servicing operation. The value of the option to repair and upgrade, as well as the impact of different design choices, is investigated using actual data from the HST manned servicing missions. The main differences between manned and unmanned servicing missions are then analyzed in an attempt to derive conclusions for robotic on-orbit servicing of scientific missions. In light of the cases examined, designing for serviceability exclusively for satellite repair does not seem very valuable. In contrast, upgrading can significantly increase mission utility especially if the technology embedded in the serviceable modules is evolving rapidly. Technology upgrades via on-orbit servicing have been identified as a very promising concept. Large increases in mission utility can be realized for a cost significantly lower than the cost of replacing the whole satellite.

关键词： Space telescopes

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Weblab of a control experiment in a newborn baby incubator 12

Weblab of a control experiment in a newborn baby incubator

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2015 12th International Conference on Remote engineering and Virtual Instrumentation, REV 2015

作者： Bauer, Karine Mendes, Luciano Antonio Systems and Production Engineering Graduate Program-PPGEPS Pontifical Catholic University of Parana Curitiba Brazil

ISBN: (纸本)9781479978397

WebLabs, or Remotely Operated Laboratories, allow for remote control and monitoring of interactive or batched systems with educational objectives. Considered as additional resources in education, they contribute to a flexible learning model and make possible for students to perform laboratory experiments remotely, off-class, in collaboration, thus contributing to the reduction of laboratory equipment idleness. The purpose of this paper is to report steps in designing and enabling a WebLab with background theme on the control and monitoring of thermal comfort parameters in a newborn baby incubator. Three didactical experiments can be performed in this WebLab: transfer function evaluation, on-off control and PID controller tuning, with users challenged to optimally tune the parameters of a controller algorithm. In the end of the session, the user can enter his/her impressions regarding the WebLab usage by answering a questionnaire. The WebLab design includes the evaluation of students' abilities through performance indexes while keeping operation within the requirements of an associated medical safety standard. A systematic approach for the WebLab design process has been employed, with the system design split in three layers: physical system, hardware and software. Sets of qualitative and quantitative requirements to be attended were defined. System and product design techniques, such as House of Quality, Morphological Matrix and Pugh's Method, have been employed to address the conversion of the project requirements into the Weblab overall solution. Virtual Instrumentation resources have been used to acquire temperature, humidity and air speed signals. The LabVIEW platform was used to support experiment integration and to create the user interface using LabVIEW Remote Panel architecture. The WebLab has been successfully implemented and presently can be accessed within the university network. © 2015 IEEE.

关键词： Students

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Cooperation in aircraft design

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Research in engineering Design 1992年第2期4卷 115-130页

作者： Bond, Alan H. Ricci, Richard J. Manufacturing Engineering Program University of California Los Angeles California United States Automation Systems Lockheed Aeronautical Systems Company Burbank California United States

We describe how aircraft are designed in a large organization. We discuss the different phases of design and interaction with the customer. We then describe the models used by each specialist department and the interactions among departments during the design process. We observe that the main design choices are refinement operations on the design. We then briefly describe how the negotiation process is controlled by an organizationally agreed sequence of commitment steps. We then describe negotiation at higher levels in the organization. What decisions are made, the compromises worked out, and the effect of these higher-level commitments on the design process. We conclude that: (1) aircraft design proceeds by the cooperation of specialists (specialist teams or departments);(2) each specialist has its own model of the design, and may use several different models or partial models for different purposes;(3) specialists have limited ability to understand each other's models. They communicate using a shared vocabulary, but not necessarily shared technical knowledge;(4) design proceeds by successive refinement of the models, which are coordinated and updated together;(5) the design decisions, which are acts of commitment and model refinement, are negotiated by the specialists among themselves;(6) one way this negotiation process is organized and controlled is by the use of commitment steps;(7) negotiations occur at higher levels in the organization, resulting in commitments which greatly influence and constrain the design process and its organization, and which have the greatest effect on the cost of the product. © 1992 Springer-Verlag New York Inc.

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Criteria for decision-making in transportation logistics function 5

Criteria for decision-making in transportation logistics fun...

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5th International Conference on Industrial engineering and Operations Management, IEOM 2015

作者： Diaz, Johanna Trujillo Rojas, Mario Martinez Franco, Carlos Franco Contreras, Andres Tarcisio Velasquez Bolivar, Holman Gonzalez, Jaime Fernando Perez Industrial Engineering Program Faculty of Engineering Catholic University of Colombia Bogotá D.C. Colombia Systems Engineering Program Faculty of Engineering Catholic University of Colombia Bogotá D.C. Colombia

ISBN: (纸本)9781479960651

This paper presents the first phase of a methodology for making transportation decisions in the Supply Chain (SC), in the first part of this article are the importance of transactional costs in transportation and their decision levels. Then interrelationships and dependencies of the criteria in Transportation Logistics Function (TLF). Finally presents design of the Multicriteria Decision Network (MCDN), used to support decision-making by managers of goods and transportation companies for modes or carriers selection in the Supply Chain, together with theirs concepts for to standardize the criteria from the literature review. © 2015 IEEE.

关键词： Supply chains

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Web prototype for creating descriptions and playing videos with audio description using a speech synthesizer 8

Web prototype for creating descriptions and playing videos w...

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8th Euro American Conference on Telematics and Information systems, EATIS 2016

作者： Calvo-Salamanca, Sebastian Coca-Castro, Andrés Felipe Velandia-Vega, John Alexander Systems Engineering Program Bogotá Diagonal 46 A # 15 B - 10 sede Claustro Colombia

ISBN: (纸本)9781509024360

The audio description mechanism allows people with visual disabilities to access video content. Currently, commercial and open source tools exist with features such as creation of descriptions and play videos with audio description which are based on human voice recording. An alternative Web prototype is presented in this research with the aim of introducing a novelty way for accessing video content using a speech synthesizer. Assessment of the proposed prototype is accomplished from user experience perspective and accessibility perspective. It is considered a sample of participants with visual disabilities to evaluate the user experience. Outcomes from the assessment stand out that the prototype is intuitive and easy to use according to the Average System Usability Scale. Thus, functional users have great user experience when they use the prototype for playing videos with audio description. As general conclusion, it is concluded that the proposed prototype is a potential alternative tool for creating descriptions and playing videos with audio description. © 2016 IEEE.

关键词： Speech synthesis

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Web-Based Incentive Calculations System at CV Karya Prima using Prototyping Method 7

Web-Based Incentive Calculations System at CV Karya Prima us...

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7th International Conference on New Media Studies, CONMEDIA 2023

作者： Cornelia, Monica Suryasari Universitas Multimedia Nusantara Information Systems Study Program Faculty of Engineering and Informatics Tangerang Indonesia

ISBN: (纸本)9798350307504

Consumption is an essential aspect of daily life, and fulfilling customer needs requires efficient distribution of goods. Therefore, distributors are needed and they frequently set targets for their employees to achieve, and motivation plays a significant role in employee performance. An organization that distributes goods called CV Karya Prima motivates its employees by offering incentives. However, manual incentive calculation sets out problems such as a lack of progress tracking, irregular payout dates, and probable inaccuracies. This study aims to develop a web-based incentive calculation system using the analytical hierarchy process method and a database for data retrieval. The system utilizes PHP, CodeIgniter, and MySQL and adopts the SDLC prototyping method. The developed system is focused on the sales division and variables like total sales, effective calls, calls, and outlets. The web-based system is capable of solving the issues using the features that were built based on user needs and have already been tested through user acceptance testing. © 2023 IEEE.

关键词： Websites

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Towards the conception of scientific workflows for in silico experiments in software engineering 10

Towards the conception of scientific workflows for in silico...

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Proceedings of the 2010 ACM-IEEE International Symposium on Empirical Software engineering and Measurement

作者： Pereira, Wallace M. Travassos, Guilherme H. Federal University of Rio de Janeiro/COPPE Systems Engineering and Computer Science Program Brazil

ISBN: (纸本)9781450300391

The evolution of Science has been supported by complex computerized infrastructures with growing interest in simulation based experiments. This trend can also be observed in Software engineering. Our capacity of acquiring evidences to describe phenomena of interest in the field allowed the building of in silico models that can virtually replicate feasible software behaviors and improve our capacity of observation. In silico experiments demand additional concerns for its planning. One of them is regarding the scientific workflow conception. This task is not easy and to apply ad-hoc approaches can risky the experiment execution, validity and future replications. Regarding this topic, this paper presents some initial results from our research towards an approach to support the conception of scientific workflows for in silico experiments in Software engineering are presented. © 2010 ACM.

关键词： Computer software

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Product lifecycle management and sustainable development in the context of industry 4.0: A systematic literature review 28

Product lifecycle management and sustainable development in ...

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28th ISTE International Conference on Transdisciplinary engineering, TE 2021

作者： De Oliveira, Michele Marcos Andreatta, Luisa Geraldi Stjepandić, Josip Junior, Osiris Canciglieri Industrial and Systems Engineering Graduate Program Pontifical Catholic University of Paraná Curitiba - Paraná Brazil

ISBN: (纸本)9781643682082

The Fourth Industrial Revolution and its disruptive technologies are emerging massively. With various motivations for its implementation such as elevation of speed, reducing costs, mitigating errors, and other different factors, more and more technology are being employed to solve business problems and increase profit. Through the years, product lifecycles have been shorted as a good reason to reduce production costs and give to consumers the experience of replacing goods in shorter periods. This linear cycle of 'produce-use-dispose' reached a massive success in the last decades, but have started to show lack of sustainability for consumer and industry. This work aims to conduct a Systematic Literature Review about the future challenges for Product Lifecycle Management and Sustainable Development, considering the context of Industry 4.0. The expected outcome for this study is to find elements that can support the use of 4.0 technologies in Product Lifecycle Management with a strong background for Sustainable Development. © 2021 The authors and IOS Press.

关键词： Industry 4.0

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A laboratory course for telecommunications systems engineering

A laboratory course for telecommunications systems engineeri...

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2005 ASEE Annual Conference and Exposition: The Changing Landscape of engineering and Technology Education in a Global World

作者： Refai, Hazem H. Sluss Jr., James J. School of Electrical and Computer Engineering Telecommunications Systems Program University of Oklahoma Tulsa United States

An integral part of the curriculum in the recently developed Master of Science in Telecommunications systems program at the University of Oklahoma - Tulsa is a laboratory course. The course is designed to enhance student understanding of fundamental computer networking principles and to expose students to research tools that can be used in carrying out their capstone research projects. Through a series of sequential laboratory modules, students learn to setup and configure simple to complex computer networks and to effectively employ commercial software tools for network design and performance analysis. Near the end of the course, working independently, each student is required to complete a final project that assimilates much of the reinforced and/or newly acquired knowledge and skills. This paper provides a detailed description of the laboratory course and its key project modules.

关键词： Telecommunication systems

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Towards supporting the specification of context-aware software system test cases 23

Towards supporting the specification of context-aware softwa...

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23rd Iberoamerican Conference on Software engineering, CIbSE 2020

作者： de Souza Doreste, Andréa Cristina Travassos, Guilherme Horta Systems Engineering and Computer Science Program COPPE Federal University of Rio de Janeiro Brazil

In Software engineering, context can be understood as the overall set of information used to characterize the situation of an entity. A software system is context-aware if it uses the context to provide relevant information or services to the user. Nowadays, different types of software systems with a profound impact on the user's life can be considered context-aware (e.g., ubiquitous and Internet of Things software systems). Therefore, it is crucial to guarantee that they behave correctly. Software Testing is the primary process for verifying system behavior. Because of the particularities of Context-Aware Software systems (CASS), conventional testing methods are not enough to test such systems. Based on that, we propose CATS#, a technique to support software engineers with the specification of CASS test cases and capture not only the context itself but its variation as well. CATS# is an evolution of the CATS (Context-Aware Test Suite) Design technique. It introduces two relevant evolutions: test case models and a new test template. The test case models were proposed after we searched for context-aware applications through the literature and realized that the context could affect the test process in different manners. The test template was proposed to capture the variation of context by specifying which variation should occur during the test case and when it should occur. We selected one example application to apply our technique, deriving different types of test cases and showing its relevance in these initial steps. © CIbSE 2020.

关键词： Software testing

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