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Arnelöv, Eric. "Design and Implementation of an EDF Scheduer for Fiasco.OC L4." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-301952.
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This paper describes the implementation of an EDF scheduler for the FIASCO microkernel. Benchmark test shows that the average case gain an improvement of 16-34%, in regards to schedule calls, running EDF over the existing fixed priority scheduler using Rate Monotonic (RM). A possible approach to mimic EDF scheduling with fixed priority is described using dynamic counters and worst case ready queue. The advantages and disadvantages are compared to the Fixed Priority with the Priority Promotion algorithm.
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Pensawat, Taweewit. "Real-Time Ethernet Networks Simulation Model." Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-877.
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Real-time networks are traditionally built on proprietary standards, resulting in a interoperability issues between different real-time netork implementations and traditional data networks mainly used in back office operations.
Continuity and supplier independence are a cause of concern with current
proprietary real-time networks.
This project evaluates the capability of providing real-time traffic over
switched Ethernet with EDF scheduling algorithm implemented at both the
switch and the node. By using OMNET simulation tool at packet level, it
is shown that the EDF implementation in switched Ethernet can guarantee
real-time traffic over the network and at the same time supporting non real-time traffic.
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Lamprecht, Axel. "Elektronischer Datenaustausch (EDI) in Verbundgruppen /." Wiesbaden : Dt. Univ.-Verl. [u.a.], 1998. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=007878995&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Meier, John G. "The implementation of Electronic Data Interchange (EDI) with Defense transportation operations." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA280568.
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Prouza, Marek. "Metodický přístup k zavedení IT podpory metody ATP v malém až středním podniku." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-193354.
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This thesis deal with ATP implementation issue in small to medium enterprise. The first part includes chapter about functional mechanisms of ATP and identification of key aspects that are necessary for making decision about the right variant for specific business. Real cases are described. There i salso a chapter dealing with implementation methodics of ERP systems, which are essential for using advanced fuctionality of ATP. Another chapter is dedicated to technical solution of the problém and proposes several means of realization supported by existing standardization. The second part of thesis is engaged in development of methodics, which is supposed to help specific business decide, which option of ATP implementation is the most suitable one, based on answers to defined questions. This methodics is verified on existing business already running ATP functionality, by comparing results from methodics and real situation. The results are analysed and commented.
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O'Malley, John Richard Jr. "Electronic Data Interchange: An Inventory Perspective of Its Economic Viability and Recommendations for Information Technology Driven Implementation." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/37365.
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Electronic commerce (EC) in its various forms is perceived by many organizations as the way that business will be conducted in the future. Much of the current wave of interest in EC is driven by new, readily available technologies like the Internet and the World Wide Web. The excitement regarding Web Commerce has lead many to believe that EC is relatively new. In reality, EC in the form of Electronic Data Interchange (EDI) has existed for 30 years and accounts for far more business than WC. It is the preferred, and often required, way of doing business with many large organizations such as the U.S. Federal Government, Ford, General Motors, and Wal-Mart.
While EDI has existed for 30 years, it has not experienced the rapid adoption rate that Web Commerce has in the last few years. Currently, less than 10 percent of U.S. businesses and less than 5 percent of world businesses utilize EDI. The adoption rates for other recent information technologies, such as the World Wide Web and e-mail, have been much higher in a much smaller time frame which leads to the question of why has diffusion of EDI occurred so slowly compared to other recent information technologies. According to Kalakota and Whinston (1996), it is not due to technology problems with EDI but instead with its benefits. This is in conflict with Emmelhainz (1990) and Sokol (1995) who point out the tremendous benefits to firms that adopt EDI.
This dissertation researches the reasons for the low EDI adoption rate based on financial benefits. It then develops an economic model that computes the cost savings which result when an EDI system is implemented. Sensitivity analysis is performed to understand the economic mechanisms of EDI. Based on the model developed here, recommendations are made for changing EDI to increase its market penetration. Finally, based on the recommendations an alternative EDI system, JEEDI, is developed. The financial effectiveness of the JEEDI system over existing EDI systems is then demonstrated using the economic model developed here.Ph. D.
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Johann, Victoria Anne. "Development and Implementation of an Automated SEM-EDX Routine for Characterizing Respirable Coal Mine Dust." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/73367.
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This thesis describes the development and use of a computer-automated microscopy routine for characterization of respirable dust particles from coal mines. Respirable dust in underground coal mining environments has long been known to pose an occupational health hazard for miners. Typically following years of exposure, coal workers' pneumoconiosis (CWP) and silicosis are the most common disease diagnoses. Although dramatic reductions in CWP and silicosis cases were achieved across the US between about 1970-1999 through a combination of regulatory dust exposure limits, improved ventilation and dust abatement practices, a resurgence in disease incidence has been noted more recently – particularly in parts of Appalachia. To shed light on this alarming trend and allow for better understanding of the role of respirable dust in development of disease, more must be learned about the specific characteristics of dust particles and occupational exposures.
This work first sought to develop an automated routine for the characterization of respirable dust using scanning electron microscopy with energy dispersive x-ray (SEM-EDX). SEM-EDX is a powerful tool that allows determination of the size, shape, and chemistry of individual particles, but manual operation of the instrument is very time consuming and has the potential to introduce user bias. The automated method developed here provides for much more efficient analysis – with a data capture rate that is typically 25 times faster than that of the manual method on which it was based – and also eliminates bias between users. Moreover, due to its efficiency and broader coverage of a dust sample, it allows for characterization of a larger and more representative number of particles per sample. The routine was verified using respirable dust samples generated from known materials commonly observed in underground coal mines in the central Appalachian region, as well as field samples collected in this region. This effort demonstrated that particles between about 1-9μm were accurately classified with respect to defined chemical categories, and suggested that analysis of 500 particles across a large area of a sample filter generally provides representative results.
The automated SEM-EDX routine was then used to characterize a total of 210 respirable dust samples collected in eight Appalachian coal mines. The mines were located in three distinct regions (i.e., northern, mid-central and south-central Appalachia), which differed in terms of primary mining method, coal seam thickness and mining height, and coal and/or rock mineralogy. Results were analyzed to determine whether number distributions of particle size, aspect ratio, and chemistry classification vary between and within distinct mine regions, and by general sampling location categories (i.e., intake, feeder, production, return). Key findings include:
1) Northern Appalachian mines have relatively higher fractions of coal, carbonate, and heavy mineral particles than the two central Appalachian regions, whereas central Appalachian mines have higher fractions of quartz and alumino-silicate particles.
2) Central Appalachian mines tended to have more mine-to-mine variations in size, shape, and chemistry distributions than northern Appalachian mines.
3) With respect to particle size, samples collected in locations in the production and return categories have the highest percentages of very small particles (i.e., 0.94-2.0μm), followed by the feeder and then the intake locations.
4) With respect to particle shape, samples collected in locations in the production and return categories have higher fractions of particles with moderate (i.e., length is 1.5 to 3x width) to relatively high aspect ratios (i.e., length is greater than 3x width) compared to feeder and intake samples.
5) Samples with relatively high fractions of alumino-silicates have higher fractions of particles with moderate aspect ratios than samples with low alumino-silicate fractions.
6) Samples with relatively high fractions of quartz particles have higher fractions of particles with moderate aspect ratios and higher percentages of very small particles than samples with no identified quartz particles.
7) Samples with high fractions of carbonates have higher percentages of particles with relatively low aspect ratios (i.e., length and width are similar) than samples with no identified carbonate particles.Master of Science
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Sandström, David, and Marcus Svanberg. "Preparing to overcome the barriers of implementing a quality management system : A case study of EDB Card Services AS." Thesis, Umeå universitet, Handelshögskolan vid Umeå universitet (USBE), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-52158.
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The purpose of this study is to see how an organization can prepare themselves to overcome the barriers when implementing a quality management system. When introducing a new management system regardless of its intentions, there are several obstacles, or rather barriers, which an organization will face and ultimately have to deal with in order to assure a successful implementation of a QMS. Not knowing beforehand what problems may arise from adopting a new management system may halter the process of introducing the new management system and add costs, resources, and time to the introduction phase. Although there are general barriers and problems with implementing a quality management system, there are also specific barriers for each and every organization. It is of significant importance that organizations become aware of those areas of which they need to pay the most attention to when implementing a QMS. There will be forces for and against the change process of a QMS and the latter needs to be anticipated and dealt with for a successful implementation of a QMS. By using a case organization and the managers within, we were able to assess the pre-conditions at the organization and identify which barriers that were specific for them. As managers are the ones implementing the new system as well as controlling, maintaining and continuously improving it, it was necessary for us to acquire their opinions and ideas. A qualitative research approach was taken and semi-structured interviews were held at the case organization EDB Card Services AS in Mo i Rana, Norway, which included 6 managers ranging from administrative level to operations level. We found that the biggest barrier for the case organization was the fact that departments were not as inter-dependent, but rather independent from each other which is not compatible with a quality management system. It was evident that the departments could learn from each other and that spreading knowledge and proper documentation had to be improved. At the case organization one of their specific barriers were the sharing and handling of documents, this barrier could be eliminated by educating staff and managers of how to make proper documents with a clear purpose, and distribute documents to the right person at the right time. The managers were motivated and willing to spend time assuring that the quality requirements of the QMS is maintained however stressed the fact that more resources would be needed in order to achieve this. Our findings lead us to believe that general guidelines for how to implement a QMS are insufficient to successfully handle the inherent problems and barriers when changing from“what is”, to “what could be”. The specific barriers which arise when organization take a look at themselves and identify these are probably more likely to affect the implementation process more than those that are general. We came to the conclusion that EDB Card Services AS needs to deal with the barriers that we identified as forces against a QMS, namely: departmental barriers, documentation of processes and procedures, leadership, resources, and information sharing and documentation. To effectively prepare the organization for the implementation of a QMS these barriers needs to be dealt with. Furthermore, we recommend that the organization educate and train those responsible for the introduction of a QMS and that an independent steering group/committee is established.
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Esewe, Roselynd Ejakhianghe. "Nigeria developing strategies to enhance implementation of early Kangaroo Mother Care (KMC)." University of the Western Cape, 2017. http://hdl.handle.net/11394/6377.
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Philosophiae Doctor - PhD (Nursing)The number of healthcare institutions that has embraced Kangaroo Mother Care (KMC) as an effective and efficient method of neonatal care especially in Edo State, Nigeria has not multiplied even after more than a decade of its recommendation by the World Health Organisation (WHO) in 2003. Nigeria ranks seventh among the ten African countries where newborns have the highest risk of dying with over 700 newborn deaths per10, 000 live births. This is worrisome because Edo State is one of the 36 states in Nigeria that contribute about 6,700 neonatal deaths to the 255,500 mortality rate recorded in Nigeria annually. This has led to a concern about the knowledge and attitude of the key drivers in neonatal care of simplified methods aimed at reducing neonatal mortality despite previous training efforts. The development of a strategy to enhance the early implementation of the WHO KMC guidelines in all healthcare facilities across the state was therefore conceptualized. Strategies to increase implementation are considered important to the success of KMC because reducing neonatal mortality rate is contextual. This research aimed to explore and describe the application of the KMC guidelines by the nurses, administrators and parents of preterm infants in the care of premature babies and to develop strategies to enhance its early implementation in healthcare facilities in Edo State, Nigeria.
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Esewe, Roselynd Ejakhianghe. "Developing strategies to enhance implementation of early Kangaroo Mother Care (KMC) guidelines in health care facilities in Edo State, Nigeria." University of the Western Cape, 2018. http://hdl.handle.net/11394/6201.
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Philosophiae Doctor - PhD (Nursing)The number of healthcare institutions that has embraced Kangaroo Mother Care (KMC) as an effective and efficient method of neonatal care especially in Edo State, Nigeria has not multiplied even after more than a decade of its recommendation by the World Health Organisation (WHO) in 2003. Nigeria ranks seventh among the ten African countries where newborns have the highest risk of dying with over 700 newborn deaths per10, 000 live births. This is worrisome because Edo State is one of the 36 states in Nigeria that contribute about 6,700 neonatal deaths to the 255,500 mortality rate recorded in Nigeria annually. This has led to a concern about the knowledge and attitude of the key drivers in neonatal care of simplified methods aimed at reducing neonatal mortality despite previous training efforts. The development of a strategy to enhance the early implementation of the WHO KMC guidelines in all healthcare facilities across the state was therefore conceptualized. Strategies to increase implementation are considered important to the success of KMC because reducing neonatal mortality rate is contextual. This research aimed to explore and describe the application of the KMC guidelines by the nurses, administrators and parents of preterm infants in the care of premature babies and to develop strategies to enhance its early implementation in healthcare facilities in Edo State, Nigeria.
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Sun, Xizhi. "An integrated framework for developing generic modular reconfigurable platforms for micro manufacturing and its implementation." Thesis, Brunel University, 2009. http://bura.brunel.ac.uk/handle/2438/3493.
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The continuing trends of miniaturisation, mass customisation, globalisation and wide use of the Internet have great impacts upon manufacturing in the 21st century. Micro manufacturing will play an increasingly important role in bridging the gap between the traditional precision manufacturing and the emerging technologies like MEMS/NEMS. The key requirements for micro manufacturing in this context are hybrid manufacturing capability, modularity, reconfigurability, adaptability and energy/resource efficiency. The existing design approaches tend to have narrow scope and are largely limited to individual manufacturing processes and applications. The above requirements demand a fundamentally new approach to the future applications of micro manufacturing so as to obtain producibility, predictability and productivity covering the full process chains and value chains. A novel generic modular reconfigurable platform (GMRP) is proposed in such a context. The proposed GMRP is able to offer hybrid manufacturing capabilities, modularity, reconfigurablity and adaptivity as both an individual machine tool and a micro manufacturing system, and provides a cost effective solution to high value micro manufacturing in an agile, responsive and mass customisation manner. An integrated framework has been developed to assist the design of GMRPs due to their complexity. The framework incorporates theoretical GMRP model, design support system and extension interfaces. The GMRP model covers various relevant micro manufacturing processes and machine tool elements. The design support system includes a user-friendly interface, a design engine for design process and design evaluation, together with scalable design knowledge base and database. The functionalities of the framework can also be extended through the design support system interface, the GMRP interface and the application interface, i.e. linking to external hardware and/or software modules. The design support system provides a number of tools for the analysis and evaluation of the design solutions. The kinematic simulation of machine tools can be performed using the Virtual Reality toolbox in Matlab. A module has also been developed for the multiscale modelling, simulation and results analysis in Matlab. A number of different cutting parameters can be studied and the machining performance can be subsequently evaluated using this module. The mathematical models for a non-traditional micro manufacturing process, micro EDM, have been developed with the simulation performed using FEA. Various design theories and methodologies have been studied, and the axiomatic design theory has been selected because of its great power and simplicity. It has been applied in the conceptual design of GMRP and its design support system. The implementation of the design support system is carried out using Matlab, Java and XML technologies. The proposed GMRP and framework have been evaluated through case studies and experimental results.
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Camponogara, Viera Raphael. "Simulating and modeling the effects of laser fault injection on integrated circuits." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTS072/document.
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Les injections de fautes laser induisent des fautes transitoires dans les circuits intégrés en générant localement des courants transitoires qui inversent temporairement les sorties des portes illuminées. L'injection de fautes laser peut être anticipée ou étudiée en utilisant des outils de simulation à différents niveaux d'abstraction: physique, électrique ou logique. Au niveau électrique, le modèle classique d'injection de fautes laser repose sur l'ajout de sources de courant aux différents nœuds sensibles des transistors MOS. Cependant, ce modèle ne prend pas en compte les grands composants de courant transitoire également induits entre le VDD et le GND des circuits intégrés conçus avec des technologies CMOS avancées. Ces courants de court-circuit provoquent un significatif IR drop qui contribue au processus d'injection de faute. Cette thèse décrit notre recherche sur l'évaluation de cette contribution. Il montre par des simulations et des expériences que lors de campagnes d'injection de fautes laser, le IR drop induite par laser est toujours présente lorsque l'on considère des circuits conçus dans des technologies submicroniques profondes. Il introduit un modèle de faute électrique amélioré prenant en compte le IR drop induite par laser. Il propose également une méthodologie qui utilise des outils CAD standard pour permettre l'utilisation du modèle électrique amélioré pour simuler des fautes induits par laser au niveau électrique dans des circuits à grande échelle. Sur la base de simulations et de résultats expérimentaux supplémentaires, nous avons constaté que, selon les caractéristiques de l'impulsion laser, le nombre de fautes injectées peut être sous-estimé par un facteur aussi grand que 3 si le IR drop induite par laser est ignorée. Cela pourrait conduire à des estimations incorrectes du seuil d'injection des fautes, ce qui est particulièrement pertinent pour la conception de techniques de contre-mesures pour les systèmes intégrés sécurisés. De plus, les résultats expérimentaux et de simulation montrent que même si l'injection de fautes laser est une technique d'injection de fautes très locale et précise, les IR drops induites ont un effet global se propageant à travers le réseau d'alimentation. Cela donne des preuves expérimentales que l'effet de l'illumination laser n'est pas aussi local que d'habitudeLaser fault injections induce transient faults into ICs by locally generating transient currents that temporarily flip the outputs of the illuminated gates. Laser fault injection can be anticipated or studied by using simulation tools at different abstraction levels: physical, electrical or logical. At the electrical level, the classical laser-fault injection model is based on the addition of current sources to the various sensitive nodes of MOS transistors. However, this model does not take into account the large transient current components also induced between the VDD and GND of ICs designed with advanced CMOS technologies. These short-circuit currents provoke a significant IR drop that contribute to the fault injection process. This thesis describes our research on the assessment of this contribution. It shows by simulation and experiments that during laser fault injection campaigns, laser-induced IR drop is always present when considering circuits designed in deep submicron technologies. It introduces an enhanced electrical fault model taking the laser-induced IR-drop into account. It also proposes a methodology that uses standard CAD tools to allow the use of the enhanced electrical model to simulate laser-induced faults at the electrical level in large-scale circuits. On the basis of further simulations and experimental results, we found that, depending on the laser pulse characteristics, the number of injected faults may be underestimated by a factor as large as 3 if the laser-induced IR-drop is ignored. This could lead to incorrect estimations of the fault injection threshold, which is especially relevant to the design of countermeasure techniques for secure integrated systems. Furthermore, experimental and simulation results show that even though laser fault injection is a very local and accurate fault injection technique, the induced IR drops have a global effect spreading through the supply network. This gives experimental evidence that the effect of laser illumination is not as local as usually considered
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Taylor, Rowena Margaret. "Teachers' conflicting responses to change: an evaluation of the implementation of senior social studies for the NCEA, 2002-2006 : a thesis presented in partial fulfilment of the degree of Doctor of Education (EdD), Massey University, Palmerston North, New Zealand." Massey University, 2008. http://hdl.handle.net/10179/1023.
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The thesis provides a socio-historical perspective through which to evaluate the first five years of implementation (2002 to 2006) of social studies within the National Certificate of Educational Achievement [NCEA] in New Zealand secondary schools. The experiences of both lead educators, with responsibilities at a national level, and classroom teachers provide insights into the personal, contextual and institutional factors which have enabled and constrained the implementation process, especially at NCEA level one. The inclusion of social studies as a subject for the new qualifications and assessment system in New Zealand, the NCEA, heralded a significant opportunity for this integrated subject to gain academic status and acquire a unique identity within the senior secondary school curriculum. Paradoxically it set a relatively strongly framed assessment system beside a curriculum that has traditionally been weakly classified and framed (Bernstein, 1971). This paradox has created tensions for teachers who have responded in different ways, from full implementation to a more functional approach. Two groups of teachers were identified in the course of this study. The idealists are passionate advocates for senior social studies and are likely to implement it to all three NCEA levels in their school. The pragmatists, on the other hand, are more likely to offer only level one social studies, typically to their more academically able year 10 (Form 4) students for extension purposes, and also to induct them into the assessment requirements of the NCEA system before they study the traditional social science subjects at levels one, two and three. This pragmatic approach reflects past practices of the pre- NCEA, School Certificate era (1945-2001). It continues to reinforce the low status and unclear identity of senior social studies within the social sciences as well as within an already overcrowded senior school curriculum. At the end of this first five year period of implementation the viability of senior social studies is at a critical juncture, with its on-going success not yet assured.
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Lai, Chi-hung, and 賴啟弘. "Implementation of an EDF-based low energy scheduling algorithm." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/45193007637604178048.
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碩士國立成功大學
電腦與通信工程研究所
96
With the popularity of embedded handheld device, human’s life can be greatly convenient. However, with the more and more functions attached to the embedded system, the great impact is that the energy on which the handheld devices depend may not be enough. There is a lot of research that focus on improving the dynamic power consumption, but only few research is concerning static power consumption owing to the leakage current. Leakage current is the physical phenomenon and occurs when the semiconductor element active, therefore the leakage current phenomenon is mostly improved by process technology. It is proposed that a scheduling algorithm to improve both dynamic and static power consumption under the condition of periodic tasks in the paper. And also in order to enhance the reliability of the hardware following the reduction of dynamic and static power consumption, the scheduling algorithm reduces the thermal cycling owing to the change of the CPU state.
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Vieira, Paula. "Assessing needs in EDI implementation." Thesis, 1995. http://spectrum.library.concordia.ca/2577/1/MM01296.pdf.
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Wong, J. K., and 翁佳愷. "DWDM EDFA Design and Implementation for HFC Systems." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/83976018519519490964.
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碩士國立交通大學
電信工程系
87
In this thesis, we have designed and implemented EDFAs for HFC networks applications. We first studied the properties of EDFA, especially the gain model and gain dynamics. Finally, we designed and implemented two kind of EDFAs, one for power amplifiers in the head end and another one is suitably used with DWDM techniques.
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Chang, Chia-Xuan, and 張家軒. "Design and Implementation of Power Supply System for Micro-Wire-EDM." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/83177970767620441514.
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碩士華梵大學
機電工程研究所
91
Today, wire electrical discharge machining (Wire-EDM) with standard as well as small wire diameters is mainly applied in the tool and die sector which is facing increasing demands on miniaturization and accuracy. Since fine wires with a diameter down to 80 micrometers cannot be applied on commercialized Wire-EDM machines developed by local machine tool builder in Taiwan, it is necessary to develop a micro Wire-EDM for micro machining purpose. The purpose of this dissertation is aim to develop a power supply system of micro Wire-EDM. A low power supply system composed of a power setting circuit, a discharge circuit, a FPGA chip and a protection circuit has been developed. Precise machining energy and peak current were calculated for micro wire by theoretical analysis. The FPGA chip has been applied to control the low energy discharge circuit signal designed. The relation between the discharge energy, sparking frequency, discharge current have been experimentally obtained and analyzed. According to experimental results, the optimization of discharge energy and discharge current were analyzed and derived.
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Su, Yan-Ming, and 蘇彥銘. "Design and Implementation of Adjustable Pulse Discharge Circuit for Micro-EDM." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/07788094225335434813.
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碩士國立彰化師範大學
電機工程學系
97
The traditional micro-Electro-Discharge Machining (μ-EDM) has some disadvantages, such as too high discharging current and too long discharging time, so its total output power is much more. This leads to the machining accuracy low so that it cannot meet the needs of precision machining industry. Therefore, this thesis proposes a adjustable pulse discharge circuit to provide the μ-EDM to output a desirous micro power. This proposed adjustable pulse discharge circuit has some advantages, such us discharging current controllable, discharging time controllable, simple circuit structure and low cost. Finally, a prototype is designed and implementation for using in μ-EDM to verify its performance. The experimental results demonstrate that the minimum discharging current can be reduced to 100mA, the minimum discharging time can be shortened to 100ns compared with the traditional transistor-type pulse discharge circuit, the over-cut of the μ-EDM with the propose adjustable pulse discharge circuit can be reduced 50%. This shows that the μ-EDM with propose adjustable pulse discharge circuit can be used in more precision applications and meets the needs of precision machining industry.
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Liou, Kuang-Chen, and 劉光振. "Desig and Implementation of Auto-Measuring Data System for CNC EDM." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/99719974039219242264.
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碩士國立交通大學
控制工程研究所
84
EDM is a machining process by means of the electrical discharging between electrode and workpiece. The characteristic is that using soft electrode can process the super hard alloy. For all that, the EDH is still involved much of the professional knowledge. For traditional EDM, the professional knowledge is for the masters having, but for new CNC EDH, that is discharged data base. In this thesis, we use the short characteristic between electrode and workpiece to design and implement the discharged measurement system because of the immutability of the data base. And for easily using, we indite the CNC subprogram for measurement system. It must have the residual for a measurement system, so we confirm it by many experiment data to prove the practicability. So the data base can be done by no more other expensive apparatuses and by timesaving 、laborsaving mechanical method. At the same time, we can lower the dependence of the operator. We hope the effort in the thesis will make a contribution to EDM.
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Cheng, Chao-Wen, and 鄭昭文. "Study and Implementation of the High Frequency AC Type EDM Power Source." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/41327329349353290889.
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碩士國立臺灣大學
電機工程學研究所
90
The mainly adapted cutting techniques include laser cutting, lathe and electrical discharge machining (EDM). Among which EDM is used for shaping hard alloy. And the conventional EDM uses DC power with power resistance as the main power supply, so it has some problems such as low efficiency, bulk volume, high prices and consumption of machining electrode. This thesis contributes a new EDM power circuit using power electronic techniques. After a series of tests, it is proved to have better characteristics, higher efficiency and more compact size.
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Chen, Cheng-chang, and 陳建彰. "Jitter-EDD Implementation for Transporting MPEG-2 Video Stream on ATM networks." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/60791765452634658509.
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碩士國立中正大學
電機工程學系
85
The Jitter-EDD (Earliest-Due-Date) scheme designed for packetswitching networks is noted for its capability to control theend-to-end delay jitter to be within the delay variation in thelast switching node of the path. It, however, cannot be used in anATM network directly due to the lack of space in the ATM cellheader to carry the required "PreAhead" information. We proposea method to implement the J-EDD scheme in the ATM network andevaluate its performance in transporting MPEG-2 video streams.Various MPEG-2 source models are used to evaluate the scheme''seffectiveness in meeting the stringent jitter requirement of theMPEG-2 video streams.
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Shy, Jiann-Shin, and 施建伸. "Design And Implementation Of A Prototype Real-Time Expert System For EDM." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/53723391151287844546.
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碩士國立交通大學
控制工程研究所
83
EDM is a machining process by means of teh electrical discharging belween electrode and workpiece. It has lower machining speed, but it can process extremely hard alloy with pecper electrode, thus, it gets mere and more popular, Hewever, in order to get higher working efficiency, we have to give *wischange parawevers for different material, that is an expert knowledge. In this thesis, how to provide the information for process setting and how to control the discharge process in real time are the major points to be described. The authors have applied fuzzy control theory combined the control rules induced from expert knowledge with operating experience, stored the calculated control actions in the database, such that, the system can adjust the discharge gap in real time, 0f the same time, we have designed experiments in accordance to the reguired data and discussed the influence of each factor according to experiment data. These analyses will be helpful to the choice of machining parameters for operator. Besides, we have designed complement user interfaces such that the operator can easily input data and obtain information. Finally, we have achieved the discharge procedure control in which real-time adjustment is taken according to the state of teh discharge process such that the whole process will be successful. The system can process with high efficiency by establishing gap conrol rule. THe establishment of database and user interface can reduce the load of operator. Let the system doing real-time respose according to the state of discharge will improve the whole machining efficiency. We hope the effort in the thesis will make a contribution to EDM.
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Ru-Hui, Tsai, and 蔡如惠. "Analysis and Implementation of XML/EDI －Case study in Floriculture Distribution Channels." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/63802691691826510939.
Full textAbstract:
碩士朝陽大學
資訊管理系碩士班
87
Abstract Electronic data interchange (EDI) is one of the main components in electronic commerce. Traditionally, EDI utilizes value-added network (VAN) as the bridge of communication. In recent years, with the fast growing of the Internet, Internet EDI has been in place of traditional VAN EDI. It is expected that the Internet EDI will soon be applied widely. Extensible markup language (XML) was proposed in 1996. One of its main purposes is facilitating document exchanges through WWW. In July 1997, the idea of integrating XML and EDI was proposed by the XML/EDI group. The goal of XML/EDI is to help enterprises, regardless of its size, make business easily with other enterprises global-wide. The objects of this research are to thoroughly investigate XML/EDI, propose a feasible application framework on agricultural marketing, and develop a prototype based on XML/EDI. In accordance with the experiences obtained from system development, this research also proposes the general steps of XML/EDI installment to the industries who are interested in the application of XML/EDI. Keywords：Electronic data interchange, Internet EDI, XML, agricultural marketing
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Meyer, Ettienne. "Electronic data interchange : an implementation methodology." Diss., 1995. http://hdl.handle.net/10500/17443.
Full textAbstract:
The purpose of the research is to propose and evaluate a
methodology for implementing EDI to assist organisations in
reaping the anticipated benefits. The research involved the
systematic analysis of the state of the art of EDI and
paradigms of methodologies, to define a model for the EDI
implementation methodology, and to define criteria for
evaluating such a model. The methodology was developed and
modelled utilising the software process model, as adopted by
Boehm (1988) and later duPlessis and van der Walt (1992),
as a framework. Next a synthesis of the assimilated
knowledge and brainstorming of project teams involved in
EDI pilot projects, was used to systematically develop an EDI
implementation methodology. The methodology was evaluated
by utilising it in the implementation of EDI between two
organisations, Computer Equipment Brokers (PTY) and
Marksec (PTY). It was concluded that the methodology was
efficient for implementing EDI.Computing
M. Sc. (Information Systems)
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陳則翔, Tse-Hsiang Chen, and 陳則翔. "Design and Implementation of an EDP-based Dynamic Voltage and Frequency Scaling Mechanism." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/y97n82.
Full textAbstract:
碩士國立臺北科技大學
資訊工程系研究所
100
Energy saving is an important issue, especially for the handheld devices. The dynamic voltage and frequency scaling (DVFS) is one of the mechanisms in the energy saving research area. DVFS can be used to reduce energy consumption of a processor while tasks are running. However, reducing the frequency for a processor might not induce minimized energy consumption, since the execution time will be extended due to the frequency being decreased and the program will consume extra energy during this extended period. As a result, the induced extra energy could be higher than what has been saved. Experiment results indicated that the execution time is an important factor for the energy consumption. The EDP (energy and delay product) metric[1] has been used to evaluate the trade-off between energy consumption and execution time. In this thesis, an approximation equation based on the correlation of the memory access rate and the critical speed for the minimum EDP metric is conducted for frequency and voltage prediction. The correlation equation can thus be deduced from the relationship and used at task execution time to find a frequency. According to the correlation equation, an appropriate frequency (called CSEDP) can be found to minimize the EDP. The energy saving DVFS algorithm based on the correlation equation is presented in this thesis. The algorithm has been implemented on Linux as a kernel-space power manager. The experiment result shows that our algorithm performed better than the commonly used Linux Ondemand Governor[2]. It indicates that the EDP values are lower than that of Ondemand from 0.429% to 14.596% with 5.27% in average.
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Yang, Ya-Ching, and 楊雅晴. "A Study on the Key Anticipated Successful Factors for the Implementation of Internet EDI in." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/01738175207414556414.
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Sheng, Lin Young, and 林永盛. "Firm’s determinants to implement outsourcing cloud technology -- An empirical study on eDW implementation of customs brokers." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/27507845064428483175.
Full textAbstract:
碩士國立高雄海洋科技大學
航運管理研究所
101
The purpose of this research is to examine firm’s determinants to implement Outsourcing Cloud Computing Technology (OCCT). Based on the relevant literature, the critcal factors, (CFs) to affect firms to implement OCCTs are first investigated. A Fuzzy AHP model is then proposed to weight those CFs from both perspectives of OCCT providers and users respectively. Based on those weights, the perceived gaps of CFs are assessed, by which, OCCT providers may make policy to promote OCCTs. As an empirical study, the implementation of electronic document data warehouse (eDW) for domestic customs broker was investigated to validate the research model. The results show that the main CFs to affect firms to implement OCCT are: Increasing efficiency, avoiding interruptions of operations, avoiding data loss, setup cost of hardware and providing all year-round services, etc. The results may provide information for OCCT providers to enhance their OCCT promotion policies. Keywords: cloud computing technology, outsourcing, customs brokers, AHP, fuzzy.
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KANG, SHU-YU, and 康蜀嶼. "A study on the corporate critical success factors for the implementation of electronic data interchange (EDI)." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/7sb77h.
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Hsu, Chang-Ping, and 許昌平. "Using MIME to Integrate EDI and Security Mechanisms of the Internet Electronic Mail - Feasibility Study and System Implementation." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/77054131179338047922.
Full textAbstract:
碩士國立交通大學
資訊管理所
87
As communication network been highly developed, the Electronic Data Exchange(EDI) has become essential to the success of the operation of governments and enterprises. When an EDI document is transferred on an open network, such as the Internet, it can be exchanged more rapidly and conveniently; thus, the performance of the enterprise is improved. However, an EDI document inevitably faces various threats; e.g., data stealing or manipulation, when electronic information is transmitted via open networks. Consequently, the security of EDI should be seriously concerned. This study will focus on applying Multipurpose Internet Mail Extensions (MIME) to integrate the EDI and the Internet e-mail security mechanisms. First, we will conduct feasibility study; by reviewing MIME format, analyzing Internet e-mail security mechanisms, like MIME Object Secure Service (MOSS), Secure MIME (S/MIME) and MIME with Pretty Good Privacy (PGP/MIME), discussing advantages and disadvantages of these mechanisms. After feasibility study, we will take a financial EDI order system as an example to develop a prototype and evaluate the result of integrating the EDI with the Internet e-mail security mechanisms by using this prototype.
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Ramjee, Trishal. "edu [play] care : the implementation of a childcare facility in a city edge condition to create an architectural typology that facilitates learning through play." Diss., 2010. http://hdl.handle.net/2263/30066.
Full textAbstract:
The north and north-western quadrants of Pretoria have been identified as requiring attention for rejuvenation. The framework looks at “connectivity through activity” and the site ties into the creative industries, heritage route and pedestrian walkway proposed for the area. It is realised that in this day and age the ideal is often impossible to achieve. Paradoxically too it is often in the more densely populated areas, where land values are highest that there is the greatest need for ample space for children, whose probable home is a cramped flat, with no garden in which to run about and play freely. With the proposal to increase housing in the framework for Pretoria's city and, in a bid to densify the urban centre, comes the added responsibility to accommodate the youngest generations of city dwellers. It is with this in mind that the design proposal looks at the creation of a pre-primary school and public playground connected to a pedestrianised inter-block walkway. A new revolutionary approach to educational buildings has to be investigated in terms of “learning through play” by “extending the field of play” and incorporating design techniques of both architecture and landscape architecture to create a holistic design precedent that will stimulate young minds. AFRIKAANS : Die Noorde en Noord-Westelike kwadrante van Pretoria word ge-identifiseer as wat aandag vir verjonging vereis. Die raamwerk kyk na "konnektiwiteit deur aktiwiteit" en die terreine bind die skeppende nywerhede, erfenis roete en voetganger paadjie [voorgestel vir die gebied] va. Daar word besef dat deesdae die ideale dikwels onmoontlik word om te bereik. Ook is dit dikwels in die meer digbevolkte gebiede, waar die grond waarde die hoogste is, dat daar 'n nodigheid vir genoeg ruimte vir kinders word. Hierdie kinders se waarskynlike huise is 'n beknopte woonstel met geen tuine om in rond te loop of te speel nie. Met die voorstelling om behuising in die raamwerk vir Pretoria se stad te vermeerder en om die stedelike sentrum digtheid te verhoog, kom ekstra verantwoordelikheid om die jongste generasies van die stede te akkommodeer. Met hierdie gedagte moet die ontwerp voorstelling na die skepping van 'n pre-primere skool kyk. Ook moet daar 'n openbare speelgrond gekoppel aan 'n voetgangers interblok loopvlak wees. 'n Nuwe revolusionêre benadering tot opvoedkundige geboue moet ondersoek word in terme van "leer deur te speel" deur "uitbreiding die veld van speel" en die integrasie van ontwerp tegnieke van beide argitektuur en landskap argitektuur om 'n holistiese ontwerp presedent te skep sodat die jong gees gestimuleer sal word.Dissertation (MArch(Prof))--University of Pretoria, 2011.
Architecture
unrestricted
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Legoete, Lerato. "An evaluation, investigation and recording of the design and implementation of the cost-based tariff design training programme to align Eskom distribution for EDI restructuring." Thesis, 2005. http://hdl.handle.net/10413/1870.
Full textAbstract:
The South African Electricity Supply Industry (ESI) has been, over much of the last century, dominated by Eskom, a large and powerful state-owned, vertically-integrated monopoly. It produces 97 % of the electricity generated in the country and that represents almost 60% of the electricity generated on the entire continent of Africa. However, recent studies of the company's performance have lead to a decision to reorganize the industry due to the realization of poor investment decisions made in the past, which resulted in massive costs to the company. The distribution business in the industry has been hugely affected by these past inconsistencies, thus in line with global trends and escalating problems, the South African Cabinet approved the restructuring of the Electricity Distribution Industry (EDI) in nineteen ninety eight, ahead of restructuring of the entire Electricity Supply Industry (ESI). There is currently a large number of municipalities plus Eskom in South Africa supplying electricity to consumers - leading to disparities in tariffs and prices. To resolve these issues, has accepted a proposal that Eskom and municipalities amalgamate to form six independent, financially viable Regional Electricity Distributors (REDs). It is no secret that electricity in South Africa has consistently been amongst the cheapest in the world. This is credited to two principles; an abundant reserve of cheap coal resulting in economical production of electricity; and, the fact that there is still a number of citizens with no access to electricity. This is a concern for the Electricity Pricing sector now faced with the task to rationalise the price inequalities in the distribution business to be fair and equitable to all customers. The Eskom Distribution Electricity Pricing team is currently undertaking the Cost-based Tariff Design project to address tariff objectives such as; cost reflectivity and transparency. The Competency Building phase within this project affords potential future RED staff members opportunities to learn a broad overview about designing tariffs. This dissertation will report on, dissect, analyze and discuss results, and recommend the probable future of the project in light of the dynamic nature of the developments in the EDI restructuring process.Thesis (M.Com.)-University of KwaZulu-Natal, 2005.