Dissertations / Theses on the topic 'E - J characteristic'

<p>This project is an extension of a pre-existing simulation program (‘Simulation_2dioden’). This simulation program was first developed in Konarka Technologies. The main purpose of the project ‘Simulation_2dioden’ is to calibrate the values of different parameters like, Shunt resistance, Series resistance, Ideality factor, Diode current, epsilon, tau, contact probability, AbsCT, intensity, etc; This is one of the curve fitting procedure’s. This calibration is done by using different equations. Diode equation is one of the main equation’s used in calculating different currents and voltages, from the values generated by diode equation all the other parameters are calculated.</p><p>The reason for designing this simulation_2dioden is to calculate the values of different parameters of a device and the researcher would know which parameter effects more in the device efficiency, accordingly they change the composition of the materials used in the device to acquire a better efficiency. The platform used to design this project is ‘Microsoft Excel’, and the tool used to design the program is ‘Visual basics’. The program could be otherwise called as a ‘Virtual Solar cell’. The whole Virtual Solar cell is programmed in a single excel sheet.</p><p>An Automated working solution is suggested which could save a lot of time for the researchers, which is the main aim of this project. To calibrate the parameter values, one has to load the J-V characteristics and simulate the program by just clicking one button. And the parameters extracted by using this automated simulation are Parallel resistance, Series resistance, Diode ideality, Saturation current, Contact properties, and Charge carrier mobility.</p><p>Finally, a basic working solution has been initiated by automating the simulation program for calibrating the parameter values.</p>

碩士<br>國立成功大學<br>能源工程國際碩士學位學程<br>107<br>Modern fighter jets are some of the most sophisticated and complex machines ever built and understanding their aerodynamic behavior is of great interest to improve flying performance and cost reduction design. The present study was devised to analyze the characteristics that fighter jets’ wings experience when flying at subsonic and supersonic conditions. This study was divided into two parts, as follows: The first part of this study investigated the vortex formation on a 65-degree delta wing with a blunt leading edge at subsonic conditions. To this effect, a NASA’s wind tunnel experiment done to this same wing configuration in the Langley National Transonic Facility (NTF) was used as a reference to perform a numerical study using computational fluid dynamic techniques. Later, both results, the experimental and the numerical analysis were compared to validate the CFD techniques employed to apply these CFD procedures to a full-scale J-31 jet fighter. Upon completion of the first case, CFD techniques were employed to analyze the aerodynamic characteristics encountered on a J-31 jet fighter when flying at 1.2 Mach including vortex formation and shock waves by analyzing its lift, drag, and pressure coefficient.

碩士<br>國立宜蘭大學<br>化學工程與材料工程學系碩士班<br>101<br>Due to their low cost fabrication and relatively high conversion efficiencies, dye-sensitized solar cells (DSSCs) receive a primary attention in this study. The main objectives are threefold. One is applying one-diol equivalent circuit model over the current density-voltage (J-V) curves obtained from the literature. The other one is to use the previous model to examine the graphene-containing electrode in DSSCs. The last one is to evaluate the DSSCs with via electrochemical impedance spectroscopic (EIS) data. The modeling of electric parameters in J-V curve makes use of non-linear regression. Results show that the cells efficiency is higher as the series resistance (Rs) becoming lower and the ideal factor (A) approaching one. Various ratios of graphene/TiO2 composites were prepared for working electrodes in DSSCs to examine their efficient. Also, modeling the electric parameter of an equivalent circuit was implemented. Experimental results showed that the optimal capacity was the ratio of 0.2‰, which has a conversion efficiency of 6.65%. This is higher than the electrode without graphene. In order to compare of carbon-based working electrode, the same ratio of carbon nanotube/TiO2 composite was also prepared to examine its performance. Replacement of graphene with carbon nanotube gave no beneficial effect on the efficiency. Apparently, electrons transportations are different between these two allotropes, and this difference may ascribe to their different geometric structure. Modeling results indicated not only have the great light generated current density (Jg) and reverse saturation current density (J0) but also get the similar magnitudes of shunt resistances for the present graphene/TiO2 electrodes. The enhancement in efficiency of graphene-containing electrodes was rationalized in terms of increases of electronic transportation paths with incorporation of small amount of graphene. Finally, EIS data were simulated by series circuit and parallel circuit. Resistance parameter were evaluated. The transport resistance (Rw) in graphene/TiO2 electrode is smaller than carbon nanotube/TiO2. It is concluded that the parallel circuit system more applicable for the present electrodes than the series circuit system.

碩士<br>國立高雄應用科技大學<br>商務經營研究所<br>98<br>In Taiwan, Semiconductor industry, also known as semiconductor industry, is a luminous device made of semiconductor materials. The semiconductor industry is one of the most competitive products in the industry. The object of this study is the personnel at J International Inc. in the semiconductor industry, aiming at understanding the correlation between personnel’s job characteristics and work pressure by means of empirical study. From this research, we hope to infer a workable policy that is built on both theory and practice to deal with the issue, and by this research, we hope to offer reference for similar industries in the future and evidence for further research. The participants of the study are the employees from 5 departments of Pan Jit International Inc, including R&D Department, Q.C. Department, Wafer Department, Production of packaging Department, and Administration Department. 539 questionnaires were distributed, and 502 responses were collected, amongst which were 475 valid responses. The valid response rate is 88%. This research adopts descriptive statistical analysis, one-way ANOVA analysis, Pearson product-moment correlation coefficient methods and finds: 1. In semiconductor industry, the personnel’s background variable affects the job characteristics. 2. In semiconductor industry, the personnel’s background variable partially affects the work pressure. 3. Job characteristics is related to work pressure. This study suggests at the end that when supervisors are designing work, they should take into account whether the employees have sufficient knowledge about the job, and also intensify employee training to let them understand what skills are required for certain work. In addition, set up clear performance standards lest the employees need to speculate how to get better work performance, which might cause pressure. Designing appropriate scope of work, providing moderate work pressure, offering work training, and learning more about one’s job can reduce overladen work pressure can enhance work efficacy and performance.

碩士<br>華梵大學<br>建築系在職專班<br>103<br>The research employed a case study in order to understand how "J" elementary school constructs the environment which is in favor of implementing school-based curriculum development. School management influenced by school-based background and culture shows the uniqueness of educational phenomenon. The purposes of this study includes:（1）understanding the purposes, basic concepts and contents of school-based curriculum development,（2） understanding the implementation of the school-based curriculum and teaching tactics,（3）analyzing the affecting factors of curriculum implementation,（4）finding out the solutions to the problems encountered during school-based curriculum development. This study adopts qualitative research method. Observation, interview and document analysis are used to collect empirical data. The research concludes with the following findings: Ⅰ.The school-based curriculum development is basis on the concepts of open-education, learner-centered education and integrated activity learning, emphasizing students’ personal traits in learning. Students can choose learning content and methods by themselves, can develop their individual differences and potential. Ⅱ.The key leader adapts the direction of school management to different contexts. Integrative activities learning area courses should be conducted theme-based activities curriculum and arranged with appropriate conditions. Ⅲ.The creative management of school basis needs the implementing strategies and methods. The teachers must arrange their teaching materials within students’learning context and design the courses in order to help students’integrate their learning experience. IV. According to the literature review, the interview and the case study, and it is able to verify the school-based innovative management, to realize the school vision, to develop the school characteristics, to promote teachers professional autonomy, and to stimulate the student’s potential.

Indiana University-Purdue University Indianapolis (IUPUI)<br>In three of J. M. Coetzee’s recent novels, Disgrace (1999), Elizabeth Costello (2003), and Slow Man (2005), the South African author explores notions of authorship and challenges the possibilities of the sympathetic imagination. The notion of the sympathetic imagination has roots in Romanticism, and it connotes inhabiting another in order to understand or interpret. Romantic poet John Keats described the poet as “continually in for [sic] and filling some other body” (Letter to Richard Woodhouse), and Coetzee addresses the notion of the sympathetic imagination in his work. There are two facets of the sympathetic imagination: that which governs social relations and that which authors and creative minds attempt to claim as a driving force behind their work. It is important not to conflate the two separate facets of the sympathetic imagination. The social facet encourages good citizenship and allows humankind to behave in humane ways. It counters one’s private desire for mastery and balances self-interest with self-sacrifice; the sympathetic imagination helps others attain their goals and places others’ needs alongside one’s own selfishness. A sympathetic imagination is an essential quality in society, yet it will always yield only partial success. It cannot achieve complete success because truly inhabiting and embodying another living person is simply impossible, but in fiction, Coetzee explores the possibilities and limits of the sympathetic imagination at the level of language and metaphor. The other facet of the sympathetic imagination is often claimed by authors, poets, and artists to allow them to inhabit the subjects of their creativity. Coetzee tests the limits of authorial claims that writing is accomplished by applying a sympathetic imagination. In doing so, he creates metaphysical frames in which his own author-characters interact with other characters to reveal that some characters resist being written. In these metaphysical frames of fiction, Coetzee suggests that an author’s sympathetic imagination will never have total success; he sets forth a notion of partial success that helps address what is gained when the sympathetic imagination runs up against limits. My argument is that the authors and characters in these three novels attempt acts of sympathetic imagination and recurrently encounter limits. Coetzee questions perceived notions of authorship and the possibilities of the sympathetic imagination without offering alternatives. He critiques common notions of authorship and character writing but offers no real solutions.

碩士<br>國立清華大學<br>電子工程研究所<br>100<br>An algorithm which extracts the substrate-resistance-free current-voltage (J-V) characteristics from large-area solar cells is proposed here. The effect of substrate resistance on device performance was also discussed. We apply the algorithm to a set of real data measured from the devices with various device areas. The extracted results are matched with the real data. Besides, the extracted results of all devices are almost identical. Both observations cement the validity of the proposed algorithm. The dependence of device performance and circuit-level parameters on the device length can be analyzed with this algorithm. Negative dependence of the power conversion efficiency (PCE), the short-circuit current (Jsc) and the fill factor (FF) of devices on the device length is observed while the open-circuit voltage (Voc) shows no dependence on the device length. This observed effect can be explained by the non-uniform potential distribution on the substrate. Finally, we used the algorithm to quantify the effect of the substrate resistance and short-circuit current on device performance. We found that increases in percentage change of PCE, Jsc, FF, Rs and Rsh as sheet resistance of substrate or short-circuit current increase. The percentage change of FF is the maximum value, so we can conclude that substrate resistance affects FF most.

碩士<br>東吳大學<br>音樂學系<br>96<br>Contents Preface Chapter One The origins of violin bows and its development Section One Before François Tourte Section Two After François Tourte Chapter Two The compare of characteristics in playing between Italian violin bows in baroque era and modern violin bows Section One Détaché Section Two Staccato Section Three Slurred staccato Section Four Legato bowing Section Five Chords Chapter three Compare the two bows in playing “ciaccona” by J. S. Bach Section One The origins and the characteristics of Ciaccona 1. The origins 2. The characteristics ● Meter and Down beat ● Tempo Section Two The “ciaccona” by J. S. Bach 1. Bowing 2. Phrasing 3. Articulation 4. Notes inégales 5. Chords Playing Conclusion Bibliography Appendix

Although verifying information and running backgrounds checks are common practices in most companies, the inclusion of practices such as social media screen or cibervetting, in the recruiting process, is still an unexplored theme, especially in Portugal. Therefore, this study aims to uncover if screening is a current practice in Portugal and which were the Social Media contents dimensions (Behaviours, Connections, Personal information, Textual and Visual information, Professional information and SNS presence), and characteristics of the applicants, which impacts the most, recruiters perceptions. Additionally, the hypothesis was tested with age, level of education and size of the company. We resorted to a quantitative method to gather the data and to IBM - SPSS, to analyse it. The results were obtained resorting to Spearman's correlation coefficient, which showed that online contents dimensions, has different influences on recruiter's perceptions. On the overall, the dimension "Behaviours" proved to negatively influence perceptions, while "Connections", "Personal information", "Textual and Visual information" and "SNS presence" displayed, on the majority, neither positively or negatively influence decisions, while "Professional information" was proved to positively influence recruiter’s perceptions. When analysing the impact of the characteristics of the judge, "Age" showed statistically significant correlations with several dimensions of applicant's online contents ( Behaviours and Textual and Visual information) and characteristics (Race, Nationality and Marital Status), while recruiter's "Level of education" showed a correlation with applicants' online content dimensions (Connections, Textual and Visual information, Professional information and SNS presence), and applicant’s characteristics (religion) and lastly, a correlation between recruiter's "Company size", and applicants' online content dimensions (Connections, Personal information, Textual and visual information and SNS presence) and characteristics (Gender). In sum, Recruiter's perceptions of Candidates during the screening process can be influenced by their online content, their characteristics and by the specific characteristics of the recruiters. This research is significant to understand the perceptions and discrimination existing in companies who make hiring decisions based only on perceptions regarding applicants and to aware reader of the importance of managing their digital footprint online image.<br>Embora verificar os antecedentes e a informação dada pelos candidatos sejam práticas comuns na maioria das empresas durante o processo de recrutamento, a inclusão de práticas como o "screening" das redes sociais, ainda é um tema inexplorado, principalmente em Portugal. Dado isto, este estudo pretende desvendar se o "screening" é uma prática corrente em Portugal e quais são as dimensões dos conteúdos "online" presentes nas redes sociais, (Comportamentos, Conexões, Informações pessoais, Informações Visuais e Textuais, Informações profissionais e Presença nas redes sociais), e as características dos candidatos, que maior influência têm nas perceções dos recrutadores. Adicionalmente, testámos as hipóteses com as caraterísticas do recrutador (idade, nível de educação e tamanho da empresa). Recorremos a métodos quantitativos para recolher os dados, posteriormente analisados no IBM-SPSS, e que analisámos através do coeficiente de "Spearman". Os resultados provaram que as diversas dimensões de conteúdos "online provocam "perceções" diferentes nos recrutadores. No geral a dimensão "Comportamentos" provou influenciar negativamente as perceções, enquanto as "Conexões", "Informações pessoais", "Informações Textuais e Visuais" e a "Presença nas redes sociais", na sua maioria, não demonstraram alterar positivamente ou negativamente as perceções, no entanto, as "Informações profissionais" demonstraram influenciar positivamente as perceções dos recrutadores. Ao analisar o impacto das caraterísticas do "juiz", a "idade" demonstrou correlações estatisticamente significativas com várias dimensões dos conteúdos "online" dos candidatos ("Comportamentos" e "Informações Textuais e Visuais), e com a ("Raça", "Nacionalidade" e "Estado civil") dos candidatos, enquanto o "Nível de educação", mostrou correlações com as dimensões ("Conexões", "Informações profissionais" e "Presença nas redes sociais") e a "Religião" dos candidatos, e por último, o "tamanho da empresa" onde o recrutador trabalha provou estar relacionado com as dimensões ("Conexões", "Informações Pessoais", "Informações Textuais e visuais" e "Presença nas redes sociais") e a suas caraterísticas (género). Em suma, as perceções do recrutador sobre os candidatos, durante o processo de seleção, podem ser influencias pelos seus conteúdos online, as caraterísticas dos candidatos e as caraterísticas do recrutador. Esta pesquisa é significativa para entender a perceção que os recrutadores obtêm, dos conteúdos "online" das redes sociais dos candidatos e da discriminação existente nesta prática. Adicionalmente também para conscientizar o leitor sobre a importância de gerir a sua pegada digital.

The Post economic crisis in Denmark and the stabilization hereafter, the labor force is on rising demand for specialized and qualified talent in certain industries, such as the consulting industry and extended sub-branches. The political situation in Denmark as of now is specifically highlighting the issues that the economy is facing regarding the lack of availability and qualified workforce to keep a competitive landscape, on both the domestic and international scale. The consulting industry is growing at a fast pace as disruptive times are in effect and the demand for acquiring the right talent and retaining it, is a constant issue for the industry as a whole. This business concept plan is an innovative way to respond to the gap that the Danish labor force is currently experiencing. This start-up will be aiming to create value for candidates and companies that are exclusive to the industry. The project is structured as an online platform, which is to be a solution for those candidates and companies in “pain”, to offer a transparent service that brings value to all targets involved, through a broader and focused perspective, promotion and exposure. This concept is a new take on conservative strategies constraining the industry to gain the full potential of candidates and minimize the costs and risks affiliated with recruitment.<br>Após a crise económica e findo o período de estabilização que se seguiu, surgiu, no mercado de trabalho Dinamarquês, uma necessidade crescente de talento qualificado e especializado em certas indústrias, tais como a indústria da Consultadoria e ramos associados. A situação política na Dinamarca é hoje em dia, um reflexo das dificuldades que a economia Dinamarquesa enfrenta, face à escassez de mão-de-obra qualificada, capaz de manter a competitividade tanto a nível doméstico como internacional. A indústria da Consultadoria cresce a um ritmo acelerado, envolta num ambiente de disrupção, tendo como um dos seus principais desafios a atracção e retenção de profissionais com as qualificações certas. O conceito de modelo de negócio em análise é um forma inovadora de dar resposta aos desafios que o mercado de trabalho Dinamarquês enfrenta. A start-up apresentada tem como objetivo a criação de valor para candidatos e empresas, exclusivo para indústria em estudo. O projeto está estruturado como uma plataforma online, que pretende solucionar os problemas de empresas e candidatos do setor, através de um serviço transparente que acrescenta valor para todos os visados, através de uma perspectiva, comunicação e exposição alargadas. Pretende-se que este conceito seja uma alternativa aos modelos e estratégias vigentes, capaz de extrair o máximo potencial de cada candidato, enquanto ajuda as empresas a reduzir os custos e riscos associados ao recrutamento.

A Gestão de Pessoas enaltece o fator humano, o indivíduo e as suas experiências, bem como, o alinhamento entre os objetivos organizacionais com os interesses e as necessidades quer dos indivíduos quer da sociedade. As características do contexto atual constituem desafios para a Gestão de Pessoas, nomeadamente na forma como se trabalha, mais especificamente no desenho das suas funções. Este facto remete-nos para a área do Job Design que se refere ao desenho do trabalho/função que uma pessoa desempenha. O sector da Restauração é um sector crítico e desafiante na área da gestão de pessoas, não só pelas características e natureza do trabalho, como também por absorver mão de obra pouco qualificada, levando a taxas elevadas de turnover. Outro fator desafiante é a tipologia da generalidade das empresas deste setor, PME’s que apresentam falta de estruturas, recursos e conhecimentos para uma gestão de pessoas eficaz e sustentável. A partir destes pressupostos o presente projeto tem como objetivo apresentar uma metodologia de suporte aos diferentes níveis de liderança na gestão de pessoas, de uma empresa do sector da restauração. A empresa pertence a uma Sociedade Gestora de Participação Social (SGPS) que por motivos de confidencialidade não se revela a identidade da Empresa, nem do Grupo. Esta metodologia, pretende potenciar a flexibilização, a humanização e a experiência positiva dos colaboradores, no sentido de aumentar a sua satisfação e motivação no desempenho das suas funções. Para a prossecução do objetivo recorreu-se à metodologia qualitativa de estudo de caso.<br>In the current context, Human Resource Management praises the human factor, the individual and their experiences, as well as the alignment between organizational objectives with the interests and needs of both individuals and society. On the other hand, the characteristics of the current context represent challenges for Human Resource Management, namely in the way they work, more specifically in the design of functions. This leads us to the Job Design domain, which refers to the design of job or function that a person performs. The Restaurant sector is a critical and challenging sector in Human Resource Management, not only because the characteristics and nature of the work, but also for absorbing low-skilled persons, leading to high turnover rates. On the other hand, most companies in this sector are SMEs with lack of structures, resources and knowledge for effective and sustainable people management. Thus, this project aims to present a methodology to support different levels of leadership in people management, in a company in the restaurant sector. The company belongs to a Social Participation Management Company (SGPS) which, for reasons of confidentiality, will not reveal the identity of the Company or the Group. This methodology aims to enhance the flexibility, humanization, and positive experience of employees, in order to increase their satisfaction and motivation in the performance of their work. For the pursuit of the objective, the qualitative case study methodology was used.