492,152 research outputs found

    A framework for design engineering education in a global context

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    This paper presents a framework for teaching design engineering in a global context using innovative technologies to enable distributed teams to work together effectively across international and cultural boundaries. The DIDET Framework represents the findings of a 5-year project conducted by the University of Strathclyde, Stanford University and Olin College which enhanced student learning opportunities by enabling them to partake in global, team based design engineering projects, directly experiencing different cultural contexts and accessing a variety of digital information sources via a range of innovative technology. The use of innovative technology enabled the formalization of design knowledge within international student teams as did the methods that were developed for students to store, share and reuse information. Coaching methods were used by teaching staff to support distributed teams and evaluation work on relevant classes was carried out regularly to allow ongoing improvement of learning and teaching and show improvements in student learning. Major findings of the 5 year project include the requirement to overcome technological, pedagogical and cultural issues for successful eLearning implementations. The DIDET Framework encapsulates all the conclusions relating to design engineering in a global context. Each of the principles for effective distributed design learning is shown along with relevant findings and suggested metrics. The findings detailed in the paper were reached through a series of interventions in design engineering education at the collaborating institutions. Evaluation was carried out on an ongoing basis and fed back into project development, both on the pedagogical and the technological approaches

    Needs and challenges for a platform to support large-scale requirements engineering: a multiple-case study

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    Background: Requirement engineering is often considered a critical activity in system development projects. The increasing complexity of software as well as number and heterogeneity of stakeholders motivate the development of methods and tools for improving large-scale requirement engineering. Aims: The empirical study presented in this paper aim to identify and understand the characteristics and challenges of a platform, as desired by experts, to support requirement engineering for individual stakeholders, based on the current pain-points of their organizations when dealing with a large number requirements. Method: We conducted a multiple case study with three companies in different domains. We collected data through ten semi-structured interviews with experts from these companies. Results: The main pain-point for stakeholders is handling the vast amount of data from different sources. The foreseen platform should leverage such data to manage changes in requirements according to customers' and users' preferences. It should also offer stakeholders an estimation of how long a requirements engineering task will take to complete, along with an easier requirements dependency identification and requirements reuse strategy. Conclusions: The findings provide empirical evidence about how practitioners wish to improve their requirement engineering processes and tools. The insights are a starting point for in-depth investigations into the problems and solutions presented. Practitioners can use the results to improve existing or design new practices and toolsPeer ReviewedPostprint (published version

    Integrated project delivery framework for sustainable campus development: A qualitative study on JPP UUM

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    At present, the frameworks to improve construction design team integration have seldom included the solution for sustainability challenges within design for buildings.This challenge is even greater in achieving sustainability in campus universities such as UUM, where high volume of users and activities has made it more imperative to promote green buildings that reduce energy and water consumption while having a minimal carbon footprint.Therefore, in response to that challenge this paper investigates how the delivery team, responsible for the design and construction of a project, can be integrated to work together more efficiently and effectively. The process will involve a comprehensive review of secondary sources of data, including reports, principles, tools and guidelines that particularly relate to the best practice of team integration such as Design and Build, Concurrent Engineering (CE), Partnering, and Integrated Project Delivery (IPD).The review of these practices will contribute to the development of a conceptual guideline/framework for improving campus sustainability, particularly in the early stage (planning and design) of UUM construction projects, which will be validated through qualitative methods in an on-going research project.The outcome or result of this research will meet and support the requirement of construction, maintenance, and operation process for ‘JPP UUM’ towards sustainable building/campus in the future

    Generic regional aircraft flying qualities for the approach and landing task

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    Many changes have occurred in the past 20 years in aircraft manufacture and development. New technologies have appeared, spanning the entire aircraft design environment, such as new production methods, new materials and new avionics systems. These new methods have been developed for two reasons. For military aircraft, they have arisen through the need to improve performance. However, for civil aircraft they have arisen through the need to reduce the overall cost. This report considers one aspect of these technologies for civil aircraft: fly-by-wire. This technology uses electrical signalling in place of conventional heavy mechanical control runs. In addition, flyby- wire generally permits improvements to be made in aircraft flying and handling qualities. This requirement has originated from two main sources; a need to make improvements in the light of an increasing amount of experience, and a requirement to cope with aerodynamic modifications which have been implemented to improve aerodynamic efficiency, but which have a deleterious effect on the aircraft's flying and handling qualities. Both of these adverse effects have come about from a desire to reduce costs for the end aircraft user, i.e. the airlines. The aircraft used for these evaluations is a Generic Regional Aircraft, of about 100 seats and a weight of 90,000 lbs. Only a limited portion of the flight envelope was considered since these evaluations primarily concentrate on the approach and landing flight phase. These evaluations are being carried out as part of a joint Avro International Aerospace — Cranfield University Engineering Doctorate programme researching advanced flight control system design for a Generic Regional Aircraft. The overall aim of this programme is to produce a control law design which gives aircraft in question excellent handling qualities. The evaluations described here comprise the first in a series of three planned studies, and consider solely the approach and landing flight phase

    A novel flow-guide device for uniform exhaust in a central air exhaust ventilation system

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    Exhaust ventilation system with one central fan and multiple terminals has been widely used for the heat and contaminant removal in building environment. Conventional design without pressure balancing leads to uneven distribution of exhaust airflow rate among the multiple outlets. Existed balancing methods usually uses dampers (constant-air-volume valve or regulating valve), tapered duct, or varied inlet area. However, these methods result in higher fan energy consumption, or complicated construction and on-site commissioning. In this paper, a flow-guide device was developed for adjusting the pressure distribution of duct branches. This new device is integrated with the interflow Tee-junction and does not need any commissioning or regulating. The resistance performance of the device responding to the structural parameter was derived using the CFD simulation and experiment. The negative direct resistance featured by the device was found to effectively benefit exhaust at the outlets farther away from the central fan. The ductwork hydraulic model based on the Bernoulli's law of airflow and the fitted resistance correlations were further proposed to fulfill the parametric design. Finally, full-scale test was carried out for a central exhaust system installed with the flow-guide devices referring to a factory workshop with heat and contaminant sources. Compared to the system without the devices, the total rate of the system increased by 25%. Discrepancy of exhaust rate decreased by 78% and uneven degree decreased by 82%, which well meets the engineering balancing requirement. Meanwhile, total resistance of the system reduced 23.8% owing to the negative loss the devices bring

    ANALISIS WEBSITE PERPUSTAKAAN UNIVERSITAS ISLAM NEGERI MENGGUNAKAN METODE BENCHMARKING DAN GOAL ORIENTED REQUIRMENTS ENGINEERING (GORE) MODEL (STUDI KASUS: UIN JAKARTA, UIN YOGYAKARTA DAN UIN MALANG)

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    The library is an important source of knowledge for all academicians. One of them is the university library, the purpose of the university library is funding support from the university in providing education by providing sources of scientific information in the library. However, information sources (consisting of web sites) available in the library are currently incomplete. For this reason, a usability evaluation and design analysis of the website is required so that the library website development goals can be achieved. Requirement Analysis of this library website used the Bechmarking and Goal Oriented Requirement Engineering (GORE) methods of three library websites namely the UIN Syarif Hidayatullah Jakarta library website, Sunan Kalijaga Yogyakarta UIN and UIN Maulana Malik Ibrahim. Benchmarking method is used to get the basic requirements by questionnaire. The GORE method is obtained based on the formulation of system objectives. To get the system requirements with the GORE method consists of actor models, Strategic Dependency diagrams, and Strategic Rationale diagrams. The results of this website analysis are the achievement of all requirements obtained and the new system of the library website of the Syarif Hidayatullah State Islamic University Jakarta

    Mathematical and computer modeling of electro-optic systems using a generic modeling approach

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    The conventional approach to modelling electro-optic sensor systems is to develop separate models for individual systems or classes of system, depending on the detector technology employed in the sensor and the application. However, this ignores commonality in design and in components of these systems. A generic approach is presented for modelling a variety of sensor systems operating in the infrared waveband that also allows systems to be modelled with different levels of detail and at different stages of the product lifecycle. The provision of different model types (parametric and image-flow descriptions) within the generic framework can allow valuable insights to be gained
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