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The Global ETD Search service is a free service for researchers
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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.
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Showing 51 to 60 of 60 (0.031 seconds)| 51 |
Product structure modeling for ETO system product considering the product lifecycle : A case study of ABB Mine HoistZhang, Sumei January 2019 (has links)
In order to gain competitive advantages in markets, companies have provided a variety of customized products to satisfy customer-specific requirements, leading to not only a large amount of product data but also high cost, long lead-time and complexity of quality control. Efficient product data management throughout the product lifecycle has become increasingly crucial, of which product structure management is regarded as the most important constituent. The study took ABB Mine Hoist system as a case to investigate how to construct a generic product structure model fit for engineer-to-order system offerings with the consideration of their sales-delivery product lifecycle. The aim of the model is to facilitate the product-related information sharing and reuse across a company, and the integration of different business operations throughout the entire product lifecycle as well. Based on the current situation analysis of product data management on ABB Mine Hoist, three major issues were identified which need to be addressed in the formulation of a generic structure model: namely the integration of requirements of multiple disciplines; the consistency of product information throughout the product lifecycle; and the constant update of product repository. Through illustrating the formulation of ABB Mine Hoist generic structure model, the method of how to construct a generic product structure model for engineer-to-order system product was presented. The model was achieved by applying the framework of the step-based product model and was regarded as a result of integrating domain-specific requirements. The adaptive generic product structure model was then employed to display the role of this generic model in the different phases of a sales-delivery lifecycle. The model could serve as a “master concept” to transfer common product information in the product lifecycle. It’s expected to benefit the business of engineer-to-order system product through improving the integration of different disciplines, enhancing information exchange and reuse. It could also provide an abstract and conceptual basis for potential product repository to reinforce data consistency and completeness.
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Public financing of risky early-stage technologyGalope, Reynold 24 August 2012 (has links)
This dissertation examines the role of public investments in inducing small firms to develop risky, early-stage technologies. It contributes to expanding our understanding of the consequences of research, innovation, and entrepreneurship policies and programs by investigating in more depth the effect of the Small Business Innovation Research (SBIR) program on the innovation effort, ability to attract external capital, and other metrics of post-entry performance of small business start-ups using a new sample and estimation approach.
Unlike prior R&D subsidy studies that concentrated almost exclusively on European countries, this dissertation focused on small business start-ups in the United States using a new scientific survey of new firms. It integrated the Kauffman Firm Survey (KFS) from the Ewing Marion Kauffman Foundation with the SBIR recipient dataset from the U.S. Small Business Administration (SBA) and used advances in statistical matching to achieve better comparability between the treated and control groups of small business start-ups. The integrated KFS-SBA dataset, which contains both recipient and non-recipient small firms, and statistical matching allowed us to empirically construct the counterfactual outcomes of SBIR recipients.
This dissertation balanced the pre-treatment characteristics of SBIR recipients and non-recipients through propensity score matching (PSM). It constructed the comparison sample by identifying non-recipients with nearly identical propensity scores as those of SBIR recipients. Consistent with the propensity score theorem, observations with the same distribution of propensity scores have the same distribution of observable characteristics. PSM made the comparison and treatment samples homogenous except in SBIR program exposure, making the fundamental assumption of ignorability of treatment assignment more plausible.
Using the realized outcomes of observationally similar non-recipient start-ups as the counterfactual outcomes of SBIR recipients, we found empirical evidence of the input additionality effect of the SBIR program. Had they not applied for and granted SBIR R&D subsidies, recipient start-ups would have spent only $185,000 in R&D, but with SBIR their R&D effort was significantly increased to $663,000, on average. The treatment effects analyses also found a significant positive effect of SBIR on innovation propensity and employment. However, it appears that public co-financing of commercial R&D has crowded-out privately financed R&D of small business start-ups in the United States. A dollar of SBIR subsidy decreased firm-financed R&D by about $0.16.
Contrary to prior SBIR studies, we did not find any significant "halo effect" or "certification effect" of receiving an SBIR award on attracting external capital. However, we discovered a different certification effect of the SBIR program: SBIR grantees are more likely to attract external patents. This finding also confirms that innovation requires a portfolio of internal and external knowledge assets as theorized by David Teece and his colleagues.
This dissertation's empirical results may be relevant to the Small Business Administration, SBIR participating agencies, the U.S. Congress, other federal, state and local policymakers, small high-tech start-ups, and scholars in the field of science, technology, and innovation policy.
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Public Financing of Risky Early-Stage TechnologyGalope, Reynold V 07 December 2012 (has links)
This dissertation examines the role of public investments in inducing small firms to develop risky, early-stage technologies. It contributes to expanding our understanding of the consequences of research, innovation, and entrepreneurship policies and programs by investigating in more depth the effect of the Small Business Innovation Research (SBIR) program on the innovation effort, ability to attract external capital, and other metrics of post-entry performance of small business start-ups using a new sample and estimation approach. This study integrated the Kauffman Firm Survey from the Ewing Marion Kauffman Foundation with the SBIR recipient dataset from the U.S. Small Business Administration and used advances in the micro-econometrics of program evaluation to empirically construct the counterfactual outcomes of SBIR recipients. We found empirical evidence of the input additionality effect of the SBIR program. The treatment effects analyses also found a significant positive effect of SBIR on innovation propensity and employment. However, it appears that public co-financing of commercial R&D has crowded-out privately financed R&D of small business start-ups in the United States. A dollar of SBIR subsidy decreased firm-financed R&D by about $0.16. Contrary to prior SBIR studies, we did not find any significant “halo effect” or “certification effect” of receiving an SBIR award on attracting external capital. What we discovered is a different certification effect of the SBIR program: SBIR grantees are more likely to attract external patents. This finding confirms that innovation requires a portfolio of internal and external knowledge assets as theorized by David Teece and his colleagues.
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Rumo a um desenho técnico de um sistema de apoio à decisão para uma reconfiguração do soft systems methodology: o caso do planejamento sistêmicoMaranhão Filho, Éfrem de Aguiar 07 February 2013 (has links)
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Previous issue date: 2013-02-07 / Multidisciplinary in decision-making undergoes the same specificities of any multidisciplinary field. Very often, the lack of communication generates problems and some different approaches can be found in other areas of expertise. The Problem Structuring Methods offers answers for current queries in business administration schools, being particularly useful when used in a multimethodological approach with others current methods. Having the Soft Systems Methodology – SSM – as the core, and the merged with Strategic Options Development and Analysis in the process, Georgiou (2012) presents the Systemic Planning in the latest configuration. Aiming to seek a computational tool that meets the assumptions of the SSM, and which incorporates the specifications of the configuration of Systemic Planning, here are defined a Notation for the method and a formalization of the existing communications between the elements, subsystems, system and environment and thus find a possible way of control the use of the method in a iteratively mode. In order to demonstrate such use of the Systemic Planning, A real case analysis is presented and shows the difficulties encountered in using the Notation defined and the Formalization of the communication. Subsequently, a design of a modular computational tool, and which can be used integrated with other tools of other methods, is presented. The contribution achieved are advances in the patterns in the use of SSM tools, presented the systemic aspects of the Systemic Planning, a demonstration of the iterative use and a blueprint for a computer tool. / A multidisciplinaridade da tomada de decisão sofre com as peculiaridades de qualquer campo multidisciplinar. A falta de comunicação, muitas vezes, gera problemas e as respostas que podem ser encontradas dentro de outras áreas. Os Métodos de Estruturação de Problemas são respostas para os questionamentos atuais nas escolas de administração e negócios, principalmente o uso multimetodológico destes com outros métodos. Tendo o Soft Systems Metholodogy – SSM – como base, e a incorporação do Strategic Options Development and Analysis – SODA – ao processo do SSM, Georgiou (2012) apresenta o Planejamento Sistêmico em sua configuração mais recente. Visando buscar uma ferramenta computacional que atenda os pressupostos do SSM, e que incorpore as especificações da configuração do Planejamento Sistêmico, definem-se uma notação para o método e uma formalização das para as comunicações existentes entre os elementos, subsistemas, sistema e ambiente e, com isso, torna-se possível controlar o uso do método de forma iterativa. Para demonstrar tal uso, apresenta-se uma análise de um caso real e demonstra as dificuldades encontradas na utilização da Notação e Comunicação definida. Posteriormente, apresenta-se um desenho técnico de uma ferramenta computacional modular e que pode ser usada de forma integrada com outras ferramentas de outros métodos. Como resultado, têm-se o avanço na definição de padrões no uso das ferramentas do SSM, na apresentação dos aspectos sistêmicos do Planejamento Sistêmico, na apresentação de um uso iterativo do método e na apresentação de um desenho técnico para uma ferramenta computacional.
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Queued and Pooled Semantics for State Machines in the Umple Model-Oriented Programming LanguageAlghamdi, Aliaa January 2015 (has links)
This thesis describes extensions to state machines in the Umple model-oriented programming language to offer queued state machines (QSM), pooled state machines (PSM) and handing of the arrival of unexpected events. These features allow for modeling the behavior of a system or protocol in a more accurate way in Umple because they enable detecting and fixing common design errors such as unspecified receptions. In addition, they simplify the communication between communicating state machines by allowing for asynchronous calls of events and passing of messages between state machines. Also, a pooled state machine (PSM) has been developed to provide a different policy of handling events that avoid unspecified receptions. This mechanism has similar semantics as a queued state machine, but it differs in the way of detecting unspecified receptions because it helps handling these errors. Another mechanism has been designed to use the keyword ‘unspecified’ in whatever state of a state machine the user wants to detect these errors. In this thesis, the test-driven development (TDD) process has been followed to first modify the Umple syntax to add ‘queued,’ ‘pooled,’ and ‘unspecified’ keywords to Umple state machine’s grammar; and second, to make a change to the Umple semantics in order to implement these extensions in Umple. Then, additional modifications have been made to allow for Java code generation from those types of state machines. Finally, more test cases have been written to ensure that these models are syntactically and semantically correct. In order to show the usefulness and usability of these new features, an example is shown as a case study that is modeled using the queued state machine (QSM) besides other small tests cases.
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Faculty Senate Minutes May 7, 2012University of Arizona Faculty Senate 07 May 2012 (has links)
This item contains the agenda, minutes, and attachments for the Faculty Senate meeting on this date. There may be additional materials from the meeting available at the Faculty Center.
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Understanding Knowledge Sharing Motivation in the Public Sector: Application of Self-Determination and Person-Environment Fit TheoriesLee, Jaeyong 01 January 2018 (has links)
Knowledge has been recognized as an important resource that should be carefully managed in order to enhance organizational competitiveness. Therefore, it is important to manage knowledge resources that have been learned and stored in organizations. Several scholars in the public administration literature have examined whether public service motivation (PSM) can help employees share their knowledge in ways that contribute to the effective functioning of public organizations. However, the mechanisms by which PSM influences individuals’ propensity to share knowledge have not been clarified by past research.
Against this background, at first, this study contributes to understanding the relationship between PSM and knowledge sharing by applying self-determination theory with a logical insight of the intrinsic knowledge sharing motivation process. This study also examined that relationship by testing three competing psychological mechanisms based on person-environment (P-E) fit theory: (1) person-group (P-G) fit, (2) person-job (P-J) fit, and (3) person-supervisor (P-S) fit. The research questions for this study are as follows: Do individuals with higher levels of PSM have a higher propensity toward knowledge sharing? Does the congruence between employees and their work environment increase employees’ knowledge sharing behavior? Do PSM-driven employees have higher willingness to fit in the work environment? Does P-E fit theory help explain the causal relationship between PSM and knowledge sharing?
Based on primary data of 1,094 occupationally diverse employees working in 33 local governments in South Korea, the current study found that caution should be exercised when making claims regarding the effects of PSM on individuals’ propensity to share knowledge and that greater emphasis should be placed on ways public sector organizations can foster P-G fit and P-J fit. However, this study also found that the relationship between PSM and knowledge sharing is not mediated by the extent to which employees perceive that their values are congruent with those of their supervisors.
Keywords: public service motivation (PSM), person-environment fit (P-E fit), person-group fit (P-G fit), person-job fit (P-J fit), person-supervisor fit (P-S fit), knowledge sharing
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單一性別學習環境對高中女生選組行爲的影響： 基於「台灣教育長期追蹤資料庫」的反事實分析 / The Effect of Single-Sex Schooling on High School Girls’ Curriculum Tracking Selection: A Counterfactual Analysis of Taiwan Educational Panel Survey李尋菲 Unknown Date (has links)
本研究使用「臺灣教育長期追蹤資料庫」第二波（2003）國三與第三波（2005）高二的CP追蹤數據，採用反事實模型框架下的傾向分數配對法估計單一性別環境對臺灣高中女生選組行爲（自然組／社會組）的因果效應。使用學生進入高中前的國三資料，本研究在學生因素，家庭因素和學校、班級因素三個方面充分平衡處置組（進入女校）和控制組（進入男女合校）的樣本，使配對樣本之間除了進入女校或進入男女合校之外，在以上三個方面儘可能相等，嘗試克服觀察性數據因選擇性偏誤問題對因果效應的估計帶來的阻礙。結果顯示，在進行傾向分數配對後，處置組和控制組之間達到了很好的平衡，進入女校的女生與進入男女合班的男女合校中的女生相比，女校顯著地促進了高中女生選自然組的機率，然而該效應在數學成績水平不同的女生中存在異質性，女校顯著地促進了數學成績處於高水平的女生的選擇自然組的行爲。作爲教育分流的重要組成部分，臺灣高中生選組行爲的性別隔離長期存在，選組行爲與學生未來大學科系選擇和職業選擇關係密切，自然組中低比例的女生組成顯現出隱藏的教育機會不平等。該現象長期存在的背後因素，除了學生個人因素和學生家庭背景因素帶來的影響，本研究關注學校這一角色對高中女生選組行爲的影響。 / Based on the Taiwan Educational Panel Survey’s core panel data from wave 2 (junior high school/9th grade) and wave 3 (high school/11th grade), researcher applies the propensity score analysis in counterfactual framework to study the causal effect of single-sex schooling on high school girls’ curriculum tracking (science track or humanity track) selection. Observational data always be the obstacles of making the causal analysis because it's lacking random assignment and being under threat of selection bias and unobserved variables. Using the pretreatment variables from students in 9th grade, students in the treatment group were matched with those in control groups by the individual factors, family factors and school, classroom environment factors. After matching, students come from different groups are supposed to be relatively equivalent on all the matching variables except for attending single-sex school or not. The researcher can make suitable comparison and prediction between well-matched samples. The result shows that more girls in single-sex high schools tend to choose science track. Effect of single-sex schooling is not the same among girls with different level of math scores. It benefits girls with top math performance significantly. As an important part of the educational tracking system, alternative curriculum tracking selection in Taiwan high school is worth noteworthy. The long lasting gender segregation is closely associated with students college major as well as occupation selection and it reveals the hidden educational inequality between gender. Other than focusing on the individual and family background effect on high school girls’ curriculum tracking selection, this study highlights the school effect on it.
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The effects of government agricultural development support on the livelihoods of small-scale farmers in South AfricaMokgomo, M. N. 11 1900 (has links)
Over the past couple of years, the South African government has been offering varied
support to households that are engaged in small-scale farming, with the objectives of
improving their livelihoods, income and food security. Although the various rounds of
the General Household Survey (GHS) gathered information on the type of agricultural
support received by the farmers, their production, agricultural income and food security
status, there is limited empirical evidence on the extent to which the agricultural
support programme is yielding the intended results. Very little is also known about how
the beneficiary households perceive the agricultural support programme as either
relevant or otherwise. This study fills these gaps in the literature using the GHS data
spanning the period 2013 to 2016 to assess how government agricultural development
support influences the livelihoods of small-scale farmers in South Africa. This broad
objective is divided into two specific objectives: (1) to assess the effects of government
agricultural development support on agricultural income, production and food security
of beneficiary small-scale farmers in South Africa; and (2) to assess the usefulness of
the government agricultural development support for the beneficiary small-scale the government agricultural development support for the beneficiary small-scale
farmers in South Africa. By combining descriptive analysis with Propensity Score
Matching (PSM) and logistic estimation techniques to address these objectives, the
results indicate that from the year 2013 to the 2016 survey years, the proportion of
households who have access to agricultural development support has decreased
marginally by about two percent. Access to support has remained higher among males
than females; farmers who have low levels of education than those with high levels of
education. Across provinces access to agricultural support is high in the Eastern Cape,
KwaZulu-Natal, Northern Cape, North -West and Mpumalanga, but very low in the
Free State, Limpopo, Gauteng and Western Cape. The agricultural development
assistance given by the South African government is effective in reducing food
insecurity, as well as in improving the production and income of the beneficiary smallscale
farmers. However, the results suggest that the agricultural support system is
having a heterogeneous impact on beneficiary small-scale farmers, depending on their
gender and geographical locations. / Agriculture and Animal Health / M. Sc. (Agriculture)
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Internprissättning och tullvärde : Det är bättre att förekomma än att förekommas / Transfer Pricing and Customs Value : Prevention is Better than CureSöderberg, Anna January 2015 (has links)
Globaliseringen bidrar till en ökad världshandel och medför även ett växande antal gränsöverskridande koncerninterna transaktioner inom multinationella företag. Prissättningen av transaktioner vilka vidtas mellan närstående företag måste ske i enlighet med armlängdsprincipen som om transaktionerna vidtagits mellan två oberoende företag. Skattemyndigheterna kan justera internpriserna i slutet av beskattningsåret i de fall de anser att internprissättningen avviker från armlängdsprincipen och marknadsmässiga villkor. Utöver inkomstbeskattning åläggs företagen att betala tullavgifter i samband med transaktioner vidtagna med närstående företag etablerade utanför EU. I likhet med skattemyndigheterna granskar tullmyndigheterna företagens importpriser i syfte att säkerställa att parternas närståenderelation inte påverkat prissättningen. Båda myndigheterna arbetar således för samma mål, att upprätthålla prissättningens förenlighet med marknadsmässiga villkor. Skatte- och tullmyndigheterna tillämpar dock olika prissättningsmetoder i syfte att uppnå målet. Inkomstskatten baseras på företagens totala inkomster, relaterade till transaktionerna och tullavgiften beräknas baserat på varje specifik transaktion och vara. Det faktum att myndigheterna inkluderar olika tillgångar i de respektive beskattningsunderlagen kan medföra att de bedömer värdet av samma transaktion olika. Varierande bedömningar av samma pris kan vidare medföra krav på olika prisjusteringar i syfte att uppnå marknadsmässig prissättning. Prisjusteringar kan leda till onödiga skattetillägg och liknande straffavgifter. Det föreligger svårigheter för multinationella företag att bestämma transaktionspriser som uppfyller båda myndigheternas i syfte att undvika straffavgifter. Problematiken är ännu relativt ouppmärksammad av företag i världen. I amerikansk praxis framkommer att möjligheterna är små för företag att förlita sig på dokumentation upprättad för internprissättning, i syfte att styrka tullavgifter och tullvärde. Det är således betydelsefullt att företag upprättar dokumentationer för både internprissättning och tullvärde för att undvika straffavgifter. Dokumentationen utgör huvudsakligt bevis och ligger till grund för bedömningen av huruvida företagen uppfyllt bevisbördan avseende prisernas förenlighet med marknadsmässiga villkor. Företagen bör etablera en öppen kommunikation med de respektive myndigheterna i syfte att minimera risker för missförstånd eventuella framtida prisjusteringar. Det är bättre att förekomma än att förekommas. / The ‘arm’s length principle’ is fundamental to transfer pricing and cross-border intercompany transactions. The principle states that the prices charged for transactions of goods between related parties must be the same as if the parties were unrelated. Simply, the price needs to equal market values. If the Tax Authority finds the pricing to be inconsistent with the arm’s length principle, the price may be adjusted. In relation to cross-border intercompany transactions outside of the EU, companies have to pay customs duty and regard customs values. The Customs Authorities work to ensure that the price has not been influenced by the intercompany relationship. Thus, the Tax and Customs Authorities share the same goal, which is to ensure that the transaction price is consistent with market values. However, the methods of pursuing the goal differ. The Tax Authorities determine the amount of income tax based on the company’s total revenues deriving from cross-border intragroup transactions. The Customs Authorities on the contrary determine the amount of taxable income based on the value of every specific imported product. The authorities usually consider different values and assets when determining the amount of taxable income. Therefore the same transaction price may be evaluated differently by the Tax and Customs authorities. Price adjustments may be made if the transaction price is considered to differ in relation to market values. Thus, the companies may be obligated to pay tax surcharges or similar monetary penalties. The authorities’ different assessments of the same transaction price may result in difficulties for multinational enterprises in their efforts of meeting both requirements. The problem is regarded in varying degrees in different countries. In American precedent the court has determined the opportunities to be low for companies to depend on transfer pricing documentation when supporting customs value. It is important for companies to keep detailed documentation of both transfer pricing and customs valuation. The documentation serve as vital evidence when proving the compatibility of transaction prices with market values. Companies should also establish good communications with the authorities in order to prepare them for potential future price adjustments. Prevention is better than cure.
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