• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 3
  • 2
  • 1
  • 1
  • 1
  • Tagged with
  • 8
  • 8
  • 5
  • 4
  • 3
  • 3
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Evidential Analysis in the Process of Balanced Scorecard Embedding¢wTaking the Distributor of a High-Technological Material

Wang, Tai-An 13 June 2003 (has links)
Abstract To pursue continuous growth, enterprises have to draft out various development strategies of their operation management. Nevertheless, whether the development strategies can achieve the co-understanding and supports from the members of the organization and whether they can be really executed have to depend on systematic methods for implementation. Balanced scorecard is a kind of management system that makes the organizational strategies realized. It was originated from the balanced scorecard of the United States in 1990. It emphasized that the assessment standards for the performance on the four aspects of an enterprise (the aspect of finance, the aspect of customers, the aspect of internal procedures, and the aspect of innovation and learning) should be originated from their strategies, and should be linked with the rewarding system of the enterprise. It referred that balanced scorecard is not merely a performance assessment system, but also a management tool linked with strategies and rewarding system. This research takes the case of a company, being a distributor of high-technological material, as an example to understand the structural process of its embedding of ¡§balanced scorecard.¡¨ Secondly, through evidential analysis, we can understand the high- and low-rank staff¡¦s different extents of agreement to balanced scorecard ever since it was embedded in the company. Finally, according to the analytic results, the research points out the relevant problems encountered in the process of embedding and gives suggestions, which can be a reference guide for the analyzed company and other companies planning to embed balanced scorecard. The conclusions of the research are as follows: In spite of having received guidance from a professional consulting company in the embedding process of a series of organizational reform plans, the analyzed company was confronted with a lot of problems over the promotion of balanced scorecard. This is closely related to the enterprise culture, value judgment, organizational climate and leadership style deeply cultivated in the company for a long time. Therefore, it is not a problem of system itself, but a problem of execution. Apart from supporting the promotion of the system, high-rank and leading grades should hold positive attitude and take initiative action to participate the promotion of the system, and cultivate correct enterprise culture, value judgment, organizational climate and leadership style. In this way, the implementation of the system can be sustained continuously, and the future value of the enterprise can thus be created.
2

Controlador supervisório inteligente para sistemas híbridos eólico-diesel-bateria de pequeno porte. / An intelligent supervisory controller for wind-diesel-battery systems.

Martinez Bolaños, Julio Romel 07 December 2007 (has links)
Este trabalho apresenta o desenvolvimento e simulação de um Controlador Supervisório Inteligente para sistemas híbridos de energia de pequeno porte. O controlador utiliza técnicas de inteligência artificial, baseadas em redes neurais artificiais e lógica neuro-fuzzy, para realizar previsões de velocidade de vento e demanda de curto prazo, permitindo a tomada de decisões otimizadas de despacho para o sistema híbrido de energia. Os principais objetivos do controlador são: o atendimento à carga, a maximização na utilização da fonte renovável eólica e a redução da participação do gerador diesel, assim como são tomados procedimentos adequados para preservar a vida útil da bateria. Um modelo computacional foi criado para calcular o balanço energético de qualquer sistema híbrido a partir de séries de dados medidos de demanda e velocidade de vento. A avaliação do desempenho do controlador foi realizada comparando-se os resultados obtidos com dois outros algoritmos comumente usados para controle de sistemas híbridos. Também foi feita uma análise econômica simplificada usando a figura de mérito do custo de ciclo de vida (CCV) para destacar as vantagens do novo controlador supervisório inteligente para sistemas híbridos. / This work presents the development and simulation results of an Intelligent Supervisory Controller for hybrid power systems. The controller uses artificial intelligence techniques, based on artificial neural networks and neuro-fuzzy logic, to forecast both wind power and load, and to take optimal dispatch decisions for hybrid power systems. The main controller objectives are: supply the load, priorize wind power and minimize diesel contribution while following appropriate procedures to preserve batteries life. A simulation tool has been created to compute the energy balance of any hybrid system using measured load and wind speed time series. The performance analysis was carried out by comparing the simulation results against two other common hybrid systems\' control algorithms. Also, a simplified life cycle cost analysis (CCV) has been executed in order to point out the economic advantages of the new intelligent supervisory controller for hybrid power systems.
3

Controlador supervisório inteligente para sistemas híbridos eólico-diesel-bateria de pequeno porte. / An intelligent supervisory controller for wind-diesel-battery systems.

Julio Romel Martinez Bolaños 07 December 2007 (has links)
Este trabalho apresenta o desenvolvimento e simulação de um Controlador Supervisório Inteligente para sistemas híbridos de energia de pequeno porte. O controlador utiliza técnicas de inteligência artificial, baseadas em redes neurais artificiais e lógica neuro-fuzzy, para realizar previsões de velocidade de vento e demanda de curto prazo, permitindo a tomada de decisões otimizadas de despacho para o sistema híbrido de energia. Os principais objetivos do controlador são: o atendimento à carga, a maximização na utilização da fonte renovável eólica e a redução da participação do gerador diesel, assim como são tomados procedimentos adequados para preservar a vida útil da bateria. Um modelo computacional foi criado para calcular o balanço energético de qualquer sistema híbrido a partir de séries de dados medidos de demanda e velocidade de vento. A avaliação do desempenho do controlador foi realizada comparando-se os resultados obtidos com dois outros algoritmos comumente usados para controle de sistemas híbridos. Também foi feita uma análise econômica simplificada usando a figura de mérito do custo de ciclo de vida (CCV) para destacar as vantagens do novo controlador supervisório inteligente para sistemas híbridos. / This work presents the development and simulation results of an Intelligent Supervisory Controller for hybrid power systems. The controller uses artificial intelligence techniques, based on artificial neural networks and neuro-fuzzy logic, to forecast both wind power and load, and to take optimal dispatch decisions for hybrid power systems. The main controller objectives are: supply the load, priorize wind power and minimize diesel contribution while following appropriate procedures to preserve batteries life. A simulation tool has been created to compute the energy balance of any hybrid system using measured load and wind speed time series. The performance analysis was carried out by comparing the simulation results against two other common hybrid systems\' control algorithms. Also, a simplified life cycle cost analysis (CCV) has been executed in order to point out the economic advantages of the new intelligent supervisory controller for hybrid power systems.
4

Integration of thermochemical heat storage with a municipal district heating system : In future scenario with large variations in electricity price

Farahmand Ghaffarpour, Mehdi, Ros, Henrik January 2018 (has links)
This thesis investigates the feasibility and benefits of integrating Thermochemical heat Storage (THS) into a CHP (Combined Heat and Power) plant. A case study is done for the CHP-plant in Sala, Sweden, with a maximum heat output of 20.9 MW and maximum electricity output of 9.6 MW. The THS type considered is calcium oxide in a hydroxide system. The fluctuations in electricity price for years 2020, 2030 and 2040 are considered and low-price electricity is used as a charging source for THS. During charging the superheated steam (endothermic reaction) is used to cover some of the district heating demand. The high temperature discharge from the THS is used as reheat in the Rankine cycle. The operations are modeled in Ebsilon and optimization is done in MATLAB using genetic algorithm with the objective to achieve maximum annual revenue. The results suggest that it is not feasible to introduce THS with electricity as a charging source in year 2020, but in 2030 and 2040 THS shows promising potential. The biggest increase in revenue comes from reduced fuel consumption, and, to a lesser extent, increased income from electricity. It is concluded that Calcium hydroxide is a promising candidate for integration into CHP during large electricity price fluctuation. The main drivers for the feasibility of this combination are high fuel price and large fluctuations of electricity price.
5

Optimal operating strategies for first/last mile feeder services due to the arrival of automated vehicles : Case study: suburban areas around tunnelbana, pendeltåg and lokalbana corridors in Stockholm

ROMERO LÓPEZ, ALBERTO January 2020 (has links)
With the improvements of the vehicle technology related with connectivity, sharing, automation and electrification and as a solution to the problems that cities are facing, such as an intense population growth and pollution, there are new forms of mobility that are or will be created within the framework of the future mobility. In this context, the arrival of driverless autonomous vehicles will provoke an irreversible change supporting the implementation of new forms of mobility or improving the existent. One factor that will help to do feasible the improvement of the existent mobility is the reduction of costs due to the arrival of autonomous vehicles, what will make ondemand transportation competitive under certain circumstances when comparing costs between it and fixed route systems. This thesis studies for the case of the metro/rail corridors in the metropolitan area of Stockholm which areas are suitable to implement Demand Responsive Transport (DRT) according to urban configuration and access to transit parameters. Once the identification is done, a model to compare between two different operating strategies for feeder services is applied to obtain which one is optimal under different stages of development of the technology related with the vehicles in the fields of automation and electrification. The model used, with additions to existing ones to adapt it to the use of it to real scenarios, gives numerical results for the four considered stages, showing the importance of the travel demand and the street sinuosity on the results and selection of the optimal. The method and criteria developed contributes to have a clear identification of the areas in which the implementation of the DRT services would be feasible in a future mobility scheme.
6

市場進入策略與營運策略之動態性研究-以資訊軟體產業為例 / Foreign Market Entry Strategies & Dynamics of Operation Strategies-The Case of Firms in the Software Industry

黎遠駿, Li,Francis Unknown Date (has links)
隨著全球經濟和社會發展需求的變化,資訊產業的全球性結構調整日益明顯,由硬體主導型的發展轉為向軟體和服務主導型發展。經濟全球化為我國軟體產業發展提供了難得的機遇,我國軟體產業要積極參與國際分工,就必須走向世界,但是在走向世界的同時,也必須仔細思考什麼才是自己國際化的目的、自己企業內部的核心資源是什麼、做好自己的國際化策略或戰略的準備嗎?也因此在國際化動作中,如何選擇正確的海外市場進入策略就顯得格外重要,要採用怎樣的進入策略與企業核心資源、國際化策略、企業服務內容與產品等等之間的關係與互動已不是單純不變的環結,而是隨著市場變動不停變化的,也因此動態性調整就成為一個很重要的課題。 在眼前的日常生活當中,什麼事情已經都脫離不開資訊。也因此作為資訊產業核心的軟體及資訊服務產業,已成為新世紀全球的第一大產業。IDC 在2005年9月的研究報告中顯示全球資訊服務產業在 2003年產值已高達6410億美元,爾後年平均成長率一直保持在 5-9% 之間,可以說是一片欣欣向榮的氣象,到去年 2005年整個產值達到 7400億美元,預期到 2009 年,整個資訊服務產值將到 9250億美元,這也意味著繼工業大革命後的另一個新經濟時代的到來。 在整個產業成長中,又以亞太地區成長最大,從 2003-2009 CGAR 達 9.7%,遠超過全球平均 CGAR 6%。我國因具備良好資訊基礎設施、具備與華人相同語言、文化背景、接近並熟悉亞太市場、充裕資金與高階經營人才、與西方的技術合作經驗、豐富的 PC 軟硬體整合經驗等。充分顯示台灣軟體產業在競爭的市場環境中比起歐美資訊大廠已率先佔據極佳位置。 因此本研究就以進入策略的學術理論做為基礎,再結合個案公司實務上軟體業海外發展經驗,整合一套適於軟體產業的海外市場進入策略供企業參考。以研究結論來看,資訊軟體業因為產品與服務的特性關係,較易偏向採用較高承諾度的資源投入方式,將營業拓展至海外市場;除此之外,在地化的深耕發展也是必需要走的一條路,而且因為隨著地主國市場的投入,對地主國市場的熟悉度也會漸漸增加,也因此會在地主國市場進行一系列動態性的營運策略調整。這裡所謂的營運策略,不僅僅只是產品策略或市場策略,甚至整個市場的進入策略也會隨之調整,譬如說由獨資的進入策略轉變為合資的模式。 / As today’s global economic and social development needs continue to change,the Information industry’s global economic requirement change has gradually become more obvious;shifting from a hardware-driven type of development,to software and service-lead development。Economic globalization has brought along excellent opportunities to the development of our national software industries;to actively participate one’s software industry in the international division of labor,one will have to proceed toward the outer world;meanwhile,one must also carefully consider the purpose of one’s internationalization,the core resources of one’s inner enterprise,and whether one is prepared with a proper internationalization strategy。Consequently, knowing how to correctly select suitable foreign markets and entry strategies to be incorporated into the strategy is exceptionally critical in the process of internationalization,and in addition to that,the decision as to how the foreign markets should enter into the strategy,the enterprise’s core competence,internationalized strategy,the service content and product of the enterprise and etc. ,the relationship and interactivity between the each are no longer simple and invariable connections;instead,they are now constantly varied in accordance with the market change,and as a result, dynamic adjustment has became a very important topic today。 In today’s society,our everyday lives have become inseparable from the information technology;therefore,as being the core of information industries,software and information service have become one of the worlds top main industries of the new century。In August,2005,research from IDC have shown,that the global information service industries’ industrial output value in 2003 has increased up to 6410 billion USD;from then on,the output value has successfully maintained an annual average rate of 5-9%。Apparently,that was the sign of a long-term prosperity,as last year (2005) the output value has boosted up to 7400 billion USD。Predictions have been made that the value will continue to rise dramatically in the years to come,and in 2009,the output value for information service industries will reach a height of 9250 billion USD;this also meant the arrival of the age of new economics after the industrial revolution。 Within the whole industrial development in general,the Asia Pacific area stand to have the most rapid growth,with a CGAR rate of 9.7% from the year 2003-2009,which highly exceeded the world average rate of the CGAR of 6%。The reason for our outstanding industrial development is basically due to our possession of a good information infrastructure,similarity of the language and cultural background in Asia, familiarity toward the Asia Pacific market,abundant funds and talented individuals with high management skills,and our rich background experiences with the western technical collaboration,PC hardware and software integrations and etc。These qualities all demonstrated that apparently,in today’s competitive market,Taiwan software industries have already exceeded many of Europe and America’s top information manufacturers。 The following study will use the academic theories for the process of foreign market entry strategies as the fundamental base,and on top of that,the practical aspect based on personal experiences of software industry’s foreign market developments;these will be combined into a set that is applicable to software industries for the foreign market entry strategies,suitable for enterprises’ reference。
7

Demand-side management in office buildings in Kuwait through an ice-storage assisted HVAC system with model predictive control

Al-Hadban, Yehya January 2005 (has links)
Examining methods for controlling the electricity demand in Kuwait was the main objective and motivation of this researchp roject. The extensiveu se of air-conditioning for indoor cooling in office and large commercial buildings in Kuwait and the Gulf States represents a major part of the power and electricity consumption in such countries. The rising electricity generation cost and growing rates of consumption continuously demand the construction new power plants. Devising and enforcing Demand-SideM anagemen(t DSM) in the form of energye fficient operations trategies was the response of this research project to provide a means to rectify this situation using the demand-side management technique known as demand levelling or load shifting. State of the art demand-sidem anagementte chniquesh ave been examined through the developmenot f a model basedp redictive control optimisations trategyf or an integrateda ndm odulara pproachto the provisiono f ice thermals torage. To evaluate the potential of ice-storage assisted air-conditioning systems in flattening the demand curve at peak times during the summer months in Kuwait, a model of a Heating, Ventilation, and Air-conditioning (HVAC) plant was developed in Matlab. The model engaged the use of model based predictive control (MPQ as an optimisation tool for the plant as a whole. The model with MPC was developed to chose and decide on which control strategy to operate the integrated ice-storage HVAC plant. The model succeeded in optimising the operation of the plant and introduced encouraging improvement of the performance of the system as a whole. The concept of the modular ice-storage system was introduced through a control zoning strategy based on zonal orientation. It is believed that such strategy could lead to the modularisation of ice-storage systems. Additionally, the model was examined and tested in relation to load flattening and demonstrated promising enhancement in the shape of the load curve and demonstrated flattened demand curves through the employed strategy. When compared with measured data from existing buildings, the model showed potential for the techniques utilised to improve the load factor for office buildings.
8

Demand-side management in office buildings in Kuwait through an ice-storage assisted HVAC system with model predictive control

Al-Hadban, Yehya January 2005 (has links)
Examining methods for controlling the electricity demand in Kuwait was the main objective and motivation of this researchp roject. The extensiveu se of air-conditioning for indoor cooling in office and large commercial buildings in Kuwait and the Gulf States represents a major part of the power and electricity consumption in such countries. The rising electricity generation cost and growing rates of consumption continuously demand the construction new power plants. Devising and enforcing Demand-SideM anagemen(t DSM) in the form of energye fficient operations trategies was the response of this research project to provide a means to rectify this situation using the demand-side management technique known as demand levelling or load shifting. State of the art demand-sidem anagementte chniquesh ave been examined through the developmenot f a model basedp redictive control optimisations trategyf or an integrateda ndm odulara pproachto the provisiono f ice thermals torage. To evaluate the potential of ice-storage assisted air-conditioning systems in flattening the demand curve at peak times during the summer months in Kuwait, a model of a Heating, Ventilation, and Air-conditioning (HVAC) plant was developed in Matlab. The model engaged the use of model based predictive control (MPQ) as an optimisation tool for the plant as a whole. The model with MPC was developed to chose and decide on which control strategy to operate the integrated ice-storage HVAC plant. The model succeeded in optimising the operation of the plant and introduced encouraging improvement of the performance of the system as a whole. The concept of the modular ice-storage system was introduced through a control zoning strategy based on zonal orientation. It is believed that such strategy could lead to the modularisation of ice-storage systems. Additionally, the model was examined and tested in relation to load flattening and demonstrated promising enhancement in the shape of the load curve and demonstrated flattened demand curves through the employed strategy. When compared with measured data from existing buildings, the model showed potential for the techniques utilised to improve the load factor for office buildings.

Page generated in 0.1224 seconds