Segui questo link per vedere altri tipi di pubblicazioni sul tema: Implementation variables.
Tesi sul tema "Implementation variables"
Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili
Vedi i top-50 saggi (tesi di laurea o di dottorato) per l'attività di ricerca sul tema "Implementation variables".
Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.
Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.
Vedi le tesi di molte aree scientifiche e compila una bibliografia corretta.
1
Kokomo, Gregoire. "Implementation Variables of Corporate Social Responsibility in the Financial Services Industry". ScholarWorks, 2017. https://scholarworks.waldenu.edu/dissertations/4148.
Testo completoAbstract (sommario):
Abstract
Seventy percent of small and medium-sized U.S. companies experience negative performance because of leaders' lack of knowledge of corporate social responsibility (CSR) program implementation. CSR implementation is complex and requires organizational resources such as expertise, personnel, time, and money. Implementing CSR programs is challenging for many leaders. Research on CSR implementation in the U.S. financial services industry is scarce, and leaders of financial services firms do not have a clear understanding of how to make CSR implementation successful. The purpose of this study was to explore optimal strategies for making corporate social responsibility program implementation effective. The central research question that drove this study was determining how leaders can make CSR program implementation effective. Data collected from a purposeful sample of 10 face-to-face interviews, direct observations, and document review were coded and analyzed. One of the emergent themes suggests that leaders lack the knowledge to understand how CSR activities contribute to a better world. The lack of knowledge for successful CSR implementation causes 60% of leaders to treat CSR programs as side projects. Another theme for successful CSR programs was the leaders' commitment to transparency. Without trust, leaders cannot align stakeholders' interests with CSR activities. Implications for positive social change included opportunities for leaders to define key CSR stakeholders, establish CSR goals, and select CSR activities to meet the CSR goals. This could lead some leaders to gain the knowledge of how to integrate CSR into their firms' daily operations.
2
Zhang, Yi. "Implementation and optimization of thread-local variables for a race-free Java dialect". Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107849.
Testo completoAbstract (sommario):
Despite the popularity of Java, problems may arise from potential data-race conditionsduring execution of a Java program. Data-races are considered errors in concurrent pro-gramming languages and greatly complicate both programming and runtime optimizationefforts. A race-free version of Java is therefore desirable as a way of avoiding this com-plexity and simplifying the programming model.This thesis is part of work trying to build a race-free version of Java. It implements andoptimizes thread-local accesses and comes up with a new semantics for this language. Animportant part of implementing a language without races is to distinguish thread-local datafrom shared data because these two groups of data need to be treated differently. This iscomplex in Java because in the current Java semantics all objects are allocated on a singleheap and implicitly shared by multiple threads. Furthermore, while Java does provide amechanism for thread-local storage, it is awkward to use and inefficient.Many of the new concurrent programming languages, such as OpenMP, UPC, and D,use "sharing directives" to distinguish shared data from thread-local data, and have fea-tures that make heavy use of thread-local data. Our goal here is to apply some of theselanguage ideas to a Java context in order to provide a simpler and less error-prone pro-gramming model. When porting such features as part of a language extension to Java,however, performance can suffer due to the simple, map-based implementation of Java'sbuilt-in ThreadLocal class. We implement an optimized mechanism based on program-mer annotations that can efficiently ensure class and instance variables are only accessed bytheir owner thread. Both class and instance variables inherit values from the parent threadthrough deep copying, allowing all the reachable objects of child threads to have localcopies if syntactically specified. In particular, class variable access involves direct accessto thread-local variables through a localized heap, which is faster and easier than the defaultmap mechanism defined for ThreadLocal objects. Our design improves performance sig-nificantly over the traditional thread-local access method for class variables and providesa simplified and more appealing syntax for doing so. We further evaluate our approach bymodifying non-trivial, existing benchmarks to make better use of thread-local features, il-lustrating feasibility and allowing us to measure the performance in realistic contexts. Thiswork is intended to bring us closer to designs for a complete race-free version of Java, aswell as show how improved support for use of thread-local data could be implemented inother languages.Malgré la popularité de JAVA, de potentiels accès concurrents aux données peuvent causer des problèmes à l'exécution d'un programme. Les accès concurrents aux données sont considérés comme des erreur par les langages de programmation et compliquent grandement le processus de programmation et d'optimisation. Une version de JAVA sans accès concurrents serait la bienvenue et simplifierait ce processus. Cette thèse n'est qu'une partie d'une recherche plus importante visant à établir une version de JAVA sans accès concurrents. Elle implémente et optimise les accès en thread local et introduit une nouvelle sémantique pour ce langage. Une part importante de l'implémentation d'un langage sans concurrence est de distinguer les données locales de thread des données partagées car ces 2 types de données doivent être traitées différemment. Ceci est complexe en JAVA, car avec la sémantique actuelle, tous les objets sont alloués en un seul tas (heap) et implicitement partagés entre plusieurs threads. De plus, le mécanisme de stockage en thread local de Java est étrange et inefficace. Plusieurs des nouveaux langages concurrents, comme OpenMP, UPC et D, utilisent des "directives de partage" pour distinguer les données partagées des données locales de thread, et ont des structures faisant un usage avancé des données locales de thread. Notre but ici est d'appliquer certaines idées de ces langages dans un contexte JAVA dans le but de fournir un modéle de programmation plus simple et plus fiable. Cependant, apporter ces fonctionnalités sous forme d'extension a JAVA peut en affecter les performance du fait de la structure de la classe ThreadLocal de JAVA. Nous implémentons donc un mécanisme qui garantit efficacement que seul le processus propriétaire accède aux classes et variables d'instances. Aussi bien les classes que les variables d'instances héritent des valeurs du processus parent par copie, ce qui permet aux objets de processus enfants d'avoir des copies locales si précisé dans la syntaxe. En particulier, l'accès à des variables de classe utilise un accès direct aux variables du processus local via un tas local, ce qui est plus rapide et facile que le mécanisme par défaut de mappage défini pour les objet ThreadLocal. Notre conception améliore le performance de faon significative comparé à la méthode d'accès au processus local traditionnelle pour les variables de classe et fournit une syntaxe simplifiée et plus attrayante. Nous évaluons ensuite notre approche en modifiant des outils de test (benchmarks) complexes existants pour faire un meilleur usage de leurs fonctionnalités en processus local, ceci illustrant la faisabilité et nous permettant de mesurer les performances dans un contexte réaliste. Ce travail a pour but de nous rapprocher de la conception d'une version JAVA sans concurrence aussi bien que de montrer comment un support amélioré des données en thread local pourrait être implémenté dans d'autres langages.
3
Howarth, Mark. "HUMAN CARDIOVASCULAR RESPONSES TO ARTIFICIAL GRAVITY VARIABLES: GROUND-BASED EXPERIMENTATION FOR SPACEFLIGHT IMPLEMENTATION". UKnowledge, 2014. http://uknowledge.uky.edu/cbme_etds/14.
Testo completoAbstract (sommario):
One countermeasure to cardiovascular spaceflight deconditioning being tested is the application of intermittent artificial gravity provided by centripetal acceleration of a human via centrifuge. However, artificial gravity protocols have not been optimized for the cardiovascular system, or any other physiological system for that matter. Before artificial gravity protocols can be optimized for the cardiovascular system, cardiovascular responses to the variables of artificial gravity need to be quantified.
The research presented in this document is intended to determine how the artificial gravity variables, radius (gravity gradient) and lower limb exercise, affect cardiovascular responses during centrifugation. Net fluid (blood) shifts between body segments (thorax, abdomen, upper leg, lower leg) will be analyzed to assess the cardiovascular responses to these variables of artificial gravity, as well as to begin to understand potential mechanism(s) underlying the beneficial orthostatic tolerance response resulting from artificial gravity training.
Methods: Twelve healthy males experienced the following centrifuge protocols. Protocol A: After 10 minutes of supine control, the subjects were exposed to rotational 1 Gz at radius of rotation 8.36 ft (2.54 m) for 2 minutes followed by 20 minutes alternating between 1 and 1.25 Gz. Protocol B: Same as A, but lower limb exercise (70% V02max) preceded ramps to 1.25 Gz. Protocol C: Same as A but radius of rotation 27.36 ft (8.33 m).
Results: While long radius without exercise presented an increased challenge for the cardiovascular system compared to short radius without exercise, it is likely at the expense of more blood “pooling” in the abdominal region. Whereas short radius with exercise provided a significant response compared to short radius without exercise. More fluid loss occurred from the thorax and with the increased fluid loss from the thorax blood did not “pool” in the abdominal region but instead was essentially “mobilized” to the upper and lower leg. The exercise fluid shift profile presented in this document is applicable to not only artificial gravity protocol design but also proposes a mechanistic reason as to why certain artificial gravity protocols are more effective than others in increasing orthostatic tolerance.
4
Mallon, Ryan Peter Kingsley. "The Semantics, Formal Correctness and Implementation of History Variables in an Imperative Programming Language". Thesis, University of Canterbury. Computer Science and Software Engineering, 2006. http://hdl.handle.net/10092/1173.
Testo completoAbstract (sommario):
Storing the history of objects in a program is a common task. Web browsers remember which websites we have visited, drawing programs maintain a list of the images we have modified recently and the undo button in a wordprocessor allows us to go back to a previous state of a document. Maintaining the history of an object in a program has traditionally required programmers either to write specific code for handling the historical data, or to use a library which supports history logging. We propose that maintaining the history of objects in a program could be simplified by providing support at the language level for storing and manipulating the past versions of objects. History variables are variables in a programming language which store not only their current value, but also the values they have contained in the past. Some existing languages do provide support for history variables. However these languages typically have many limits and restrictions on use of history variables. In this thesis we discuss a complete implementation of history variables in an imperative programming language. We discuss the semantics of history variables for scalar types, arrays, pointers, strings, and user defined types. We also introduce an additional construct called an 'atomic block' which allows us to temporarily suspend the logging of a history variable. Using the mathematical system of Hoare logic we formally prove the correctness of our informal semantics for atomic blocks and each of the history variable types we introduce. Finally, we develop an experimental language and compiler with support for history variables. The language and compiler allow us to investigate the practical aspects of implementing history variables and to compare the performance of history variables with their non- history counterparts.
5
Aitken, Sharon Anne. "Exploring the ecosystemic variables in the implementation of a study and thinking skills programme". Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52839.
Testo completoAbstract (sommario):
Thesis (MEdPsych) -- Stellenbosch University, 2002.ENGLISH ABSTRACT: This study was undertaken with the view to explore the ecosystemic variables that may impact on learners' acquisition and generalisation of the study and thinking skills that they have been introduced to. In addition, my own journey of growth as a reflective practitioner has been recorded. A literature review was undertaken in order to obtain a perspective of research conducted in this field. I fulfilled the dual role of researcher and reflective practitioner which enabled me to use both the 'objective knowledge' gained from the literature review and my 'personal knowledge' which resulted from teaching experience. I selected the ecosystemic framework as the preferred educational psychological framework with which to approach this study. The nature of this research study is post-modernist, phenomenological and emancipatory. I have taken a qualitative stance in an attempt to explore, firstly, the learners' impressions of the usefulness of the programme and secondly, the variables that may be impacting on the learners' ability to acquire and generalise new strategies. The information has been gathered from my observations and questionnaires. The research report describes my observations of the ecosystemic variables that affected the implementation of a study and thinking skills programme, and the learners' impressions of the programme. In addition, I reflected on my journey through this research process. Suggestions were made as to how a study and thinking skills programme could best be implemented in a school; and as to the usefulness of emancipatory action research in South Africa.
AFRIKAANSE OPSOMMING: Hierdie navorsingsprojek is onderneem met die oog daarop om die ekosistemiese veranderlikes te ondersoek wat 'n invloed het op die opname en veralgemening van studie-en denkvaardighede waaraan leerders blootgestel is. Tesame hiermee is my persoonlike groeiervaringe as reflektiewe praktisyn ook aangeteken. 'n Literatuuroorsig is onderneem ten einde 'n perspektief te verkry van navorsing wat reeds in hierdie gebied onderneem is. In hierdie proses het ek die gesamentlike rol van navorser en reflektiewe praktisyn aangeneem. Dit het my in staat gestelom die 'objektiewe kennis' verkry uit die literatuuroorsig met die 'persoonlike kennis' opgedoen tydens my onderwyservaringe, te kombineer. Ek het die ekosistemiese raamwerk as 'n geskikte opvoedkundige sielkundige vertekpunt vir hierdie studie gekies. Die aard van hierdie navorsingsprojek IS postmodernisties, fenomenologies en emansipatories. Ten einde die leerders se indrukke van die program en die verandelikes wat hulle vermoë om die nuwe vaardighede op te neem en te veralgemeen te bepaal, is 'n kwalitatiewe benadering gevolg. Hierdie inligting is ingesamel deur middel van my eie observasies sowel as vraelyste. Hierdie navorsingsverslag beskryf my observasies van die ekosistemiese veranderlikes wat die implementering van 'n studie- en denkvaardigheidsprogram, sowel as die leerders indrukke daarvan, geaffekteer het. In toevoeging hiernee, het ek ook oor my persoonlike ervaringe gedurende die navorsingsprojek gereflekteer. Voorstelle is gemaak oor die mees geskikte wyse waarop so 'n program in 'n skool geïmplementeer kan word, asook ten opsigte van die bruikbaarheid van die emansipatoriese aksienavorsings-benadering in Suid Afrika.
6
Hershfeldt, Patricia Ann. "Proactive and reactive accommodation use variables affecting implementation for students with emotional and behavioral disorders /". [Pensacola, Fla.] : University of West Florida, 2007. http://purl.fcla.edu/fcla/etd/WFE0000016.
Testo completo
7
Björk, Casper. "A study of the effects of different contextual variables on sorting algorithms". Thesis, Blekinge Tekniska Högskola, Institutionen för programvaruteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-20528.
Testo completoAbstract (sommario):
Background: Computers use sorting algorithms to prepare data for search or insert operations, these operations can be a bottleneck for performance. Objectives: To evaluate sorting algorithms performances when existing in different implementation environments like different languages, sorting in different data types and in different sizes. Methods: By performing an experiment with Java, C++, Python and Javascript on three different sizes and three different data types performance of sorting algorithms will be evaluated. The sorting algorithms used in this study are Insertion sort, Selection sort, Quick sort and Merge sort. They were all tested on each size on each language three times. Results: In the end 432 tests were performed and the results found that Java had best execution time on all four algorithms with quick sort as the best algorithm. The best data type could not be pinpointed down since they acted differently on different algorithms. Quicksort was determined to be the fastest algorithm in the literature review which focused fastest algorithm Conclusions: Together with the results of the experiment and literature review quicksort is the fastest sorting algorithm. The best performing implementation language was Java. For data types one type could not be determined the best only the worse could be decided, floats performed the worse of all three types.
8
Asgary-Eden, Veronica. "The Implementation of Triple P – Positive Parenting Program: An Examination of Key Variables and Program Adherence". Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20305.
Testo completoAbstract (sommario):
Adoption of evidence-based parenting programs by community agencies requires an understanding of the variables that affect their implementation. This study examined variables associated with the implementation of Triple P – Positive Parenting Program in Ontario. Surveys were completed on-line by 63 administrators, 54 supervisors, and 215 service providers from 69 different agencies. In a first article, I report on agencies’ pre-implementation openness, readiness, and resistance as well as on service providers’ self-reported use of and adherence to the program. Respondents from the vast majority of agencies reported openness to change prior to implementation but approximately half reported that they were not ready and experienced resistance. Although the majority of trained service providers used the program, a significant minority had not delivered it since training. The average adherence rate reported by service providers who used the program was 85.9%. In the second article, I report on the variables associated with implementation. The majority of respondents reported that they had adequate office resources to implement Triple P. Over half the managers (administrators and supervisors) and over two thirds of service providers reported that their agency had received adequate training. The most commonly identified barrier to implementation was agency characteristics which included organizational climate, service provider characteristics, and supervision. Adequate office resources and positive agency characteristics were associated with higher program usage by service providers. Service providers’ reports impacted their individual adherence rates whereas managers had broader perspectives of the quality of implementation in their organizations. Differences in reports between managers and service providers were not associated with usage or adherence.
9
Shattuck, Dominick C. "Measuring the Relationship between Individual and Contextual Variables with Technology Implementation: Analyses of Year Three - IMPACT Project". NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-01032009-074106/.
Testo completoAbstract (sommario):
The field of educational technology is continually looking to more precisely understand the relationship between leadership, technology-related beliefs, technology resources, supportive environment and technology implementation in classrooms. Previous research has identified relationships between these factors. However, the types of predictors examined, the quality of the dependent variables used and the sophistication of the statistical tools used have sometimes been lacking. This research evaluated these factors within the context of the IMPACT project a three-year technology-enrichment intervention. Utilizing the last year of the data from this project, this cross-sectional study used structural equation modeling (SEM) to investigate the causal relationship between leadership, beliefs, technology resources, supportive environment and technology implementation, which is divided into planning, instruction and student use in classrooms. Differentiating technology implementation is an important contribution of this research as previous studies focused on a particular technology and a specific type of application. We found that teachersâ beliefs about technology had the strongest positive relationship with technology implementation. Leadership was found to indirectly influence technology implementation through teachersâ their beliefs about technology. When developing technology based interventions, policy makers should include evidence of the technologyâs effectiveness to influence teachersâ beliefs about that technology. This study provides a unique look at technology implementation using a large scale intervention with a comparison group and differentiated forms of technology implementation.
10
Hassan, Asma Abdullah. "Framework to assess the level of readiness for TQM implementation in girls' secondary schools in Saudi Arabia". Thesis, Cranfield University, 2016. http://dspace.lib.cranfield.ac.uk/handle/1826/12416.
Testo completoAbstract (sommario):
The Kingdom of Saudi Arabia (SA) set out its Vision 2030 of itself as a significant Knowledge Economy to position itself competitively in the world and in the Gulf region. The Government charged the education sector to prepare young people and build the creativity, innovation and technical skills for the country’s future. The Ministry of Education (MOE) selected TQM and has made strategic investments to achieve this strategic transformation in education. Despite this substantial investment in the infrastructure, teaching skills, information technology and advancement programmes for women to enter the workplace, the implementation of TQM has not so far delivered the outcomes expected in secondary schools (Bank, 2008; Chapman and Miric, 2009; TIMSS, 2011). This research proposes that a programme that primarily focuses on the hard aspects of change, without participatory leadership and without integrating the people concerned (as a soft programme would), cannot achieve sustainable transformation. An empirical study was designed to investigate staff perception of TQM implementation in girls’ secondary schools in the Kingdom. The 525 respondents from 61 schools in five districts of Riyadh suggest that the most pivotal critical success factors (CSFs) limiting the development of TQM culture were Top Management Commitment; Training; Tools and Techniques; and Reward and Recognition. The perception results were then used as the baseline to design a model that integrates the hard and soft CSFs of TQM in five stages of maturity. This assessment model could be used to support the schools and the MOE in objectively assessing the readiness of schools to implement TQM and identify the next major obstacles to reaching the next stage. The design approach of a maturity model is innovative in using context perception data as the baseline for designing the stages of maturity and the success factors the progress of change, making its use appropriate for the girls’ schools in the Kingdom of Saudi Arabia.
11
Cohen, Rachel Mara. "Implementing school-wide positive behavior support : exploring the influence of socio-cultural, academic, behavioral, and implementation process variables". [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001607.
Testo completo
12
Makowski, Thomas. "Relationships Between Level of Implementation of a Multi-Tiered System of Supports (MTSS), Educator Variables, and Student Growth". Scholar Commons, 2016. https://scholarcommons.usf.edu/etd/6308.
Testo completoAbstract (sommario):
This study examined the relationship between the level of implementation of the Multi-Tiered System of Supports (MTSS) approach to service delivery in schools and educators’ beliefs regarding MTSS, their perceptions of MTSS practices in their schools, and student growth. The study used data from the Florida Problem Solving/Response to Intervention Project. Thirty-four pilot schools in seven school districts across the state of Florida were provided intensive coaching, training, and technical assistance in implementing the MTSS service delivery model for three years. The current study focused on the final year of support. Data collected as part of the project’s program evaluation model were used to examine the relationships between study variables. Multiple regressions were conducted to determine the relationship between the level of implementation of MTSS and the study’s dependent variables. Findings indicated that both Infrastructure and Implementation predicted educator beliefs about Data-Based Decision Making (DBDM), while Implementation alone predicted educator beliefs about the Academic Ability and Performance of Students with Disabilities (SWD). Furthermore, the overall regression model predicted educator perceptions of practices applied to both Academic and Behavior Content; however, none of the individual predictors were significantly related to either dependent measure. No other study dependent variables were significantly predicted by the level of MTSS implementation. Implications for practice and research involve the need for larger scale studies of MTSS implementation and the importance of researchers and practitioners utilizing reliable and valid measures to monitor implementation efforts.
13
Phillips, Matthew. "An Analysis of the Variables in Implementation of the Marzano Causal Teacher Evaluation System in the State of Florida". Doctoral diss., University of Central Florida, 2014. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6340.
Testo completoAbstract (sommario):
This was a non-experimental, mixed methods study to research the different ways in which the Marzano casual teacher evaluation system was implemented in 25 school districts in the state of Florida during the 2012-2013 school year. Based on seven implementation variables, the teacher evaluation systems were compared to the implementation model and research-based best practice. The researcher then sought to determine what relationships may or may not exist in teacher performance ratings between districts that followed the research-based implementation model and districts that did not.
Two stated purposes of the Marzano causal teacher evaluation system were to improve the accuracy of teacher performance ratings and to improve the accuracy of feedback provided to teachers. Variation in implementation may possibly occur among school districts. To date no research has been conducted to analyze how variations in implementation may relate to teacher performance ratings.
The purpose of this study was to provide data to support best-practice in the implementation of the Marzano causal teacher evaluation system and to guide instructional leaders on the implementation of this evaluation system. The researcher also sought to ensure the Marzano causal teacher evaluation system provides both accurate teacher feedback and accurate teacher evaluations.
Data was collected from the Florida Department of Education published reports and information. School district implementation plans were gathered from state submitted documentation. Implementation plans were analyzed and read. Data was collected on a data collection sheet and then analyzed in SPSS using a crosstab Chi square test to determine if a statistically significant relationships existed between districts that followed the research-based implementation model and districts that did not.
It was determined that implementation of the Marzano causal evaluation system varies widely. In six out of the seven implementation variables, it was determined that there were statistically significant relationships in teacher evaluation scores between districts that followed the research-based implementation variables and districts that did not.
Further research should include validity and reliability studies on the Marzano causal evaluation system. Research should continue to analyze different ways in which the Marzano causal evaluation system is implemented, and what relationship there is between implementation and teacher performance ratings. Research should be conducted to analyze the effectiveness of feedback provided to teachers through the Marzano causal teacher evaluation system.
This research indicates that the Marzano causal teacher evaluation system should be used following research based best-practice and how it is intended to be used. The research in this study shows that when implementation variables are altered in the Marzano causal teacher evaluation system, teacher performance ratings may become inaccurate. Based on misunderstandings of the Marzano causal evaluation system, it is recommended school leaders receive additional training on the understanding and implementation of the Marzano casual teacher evaluation system.Ed.D.
Doctorate
Teaching, Learning and Leadership
Education and Human Performance
Educational Leadership; Executive Track
14
Dye, Kellen. "Implementation of bit-vector variables in a CP solver, with an application to the generation of cryptographic S-boxes". Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-235772.
Testo completoAbstract (sommario):
We present a bit-vector variable implementation for the constraint programming (CP) solver Gecode and its application to the problem of finding high-quality cryptographic substitution boxes (S-boxes). S-boxes are a component in some cryptographic protocols, for example DES, which are critical to the strength of the entire system. S-boxes are arrays of bit-vectors, where each bit-vector is itself an array of bits.The desirable properties of an S-box can be described as relationships between its constituent bit-vectors. We represent substitution boxes as arrays of bit-vector variables in Gecode in order to leverage CP techniques for finding high-quality S-boxes. In a CP solver, bit-vectors can alternatively be represented as sets or as arrays of Boolean variables. Experimental evaluation indicates that modeling substitution boxes with bit-vector variables is an improvement over both set- and Boolean-based models. We additionally correct an error in previous work which invalidates the main experimental result, extend a heuristic for evaluating S-box quality, present two symmetries for substitution boxes, define several generic bit-vector propagators, and define propagators for the S-2 and S-7 DES design criteria.
15
Manoil, Kim M. "Teachers' implementation of early literacy parent involvement strategies school predictor variables and differences across high- and low-poverty schools /". [Bloomington, Ind.] : Indiana University, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3319887.
Testo completoAbstract (sommario):
Thesis (Ph.D.)--Indiana University, School of Education, 2008.Title from PDF t.p. (viewed on May 11, 2009). Source: Dissertation Abstracts International, Volume: 69-08, Section: A, page: 3025. Advisers: Edward P. St. John; Thomas J. Huberty.
16
Nyman, Lina. "Estimation of Aerodynamic Parameters in Real-Time : Implementation and Comparison of a Sequential Frequency Domain Method and a Batch Method". Thesis, Linköpings universitet, Fluida och mekatroniska system, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-132807.
Testo completoAbstract (sommario):
The flight testing and evaluation of collected data must be efficient during intensive flight-test programs such as the ones conducted during development of new aircraft. The aim of this thesis has thus been to produce a first version of an aerodynamic derivative estimation program that is to be used during real-time flight tests. The program is to give a first estimate of the aerodynamic derivatives as well as check the quality of the data collected and thus serve as a decision support during tests. The work that has been performed includes processing of data in order to use it in computations, comparing a batch and a sequential estimation method using real-time data and programming a user interface. All computations and programming has been done in Matlab. The estimation methods that have been compared are both built on transforming data to the frequency domain using a Chirp z-transform and then estimating the aerodynamic derivatives using complex least squares with instrumental variables.The sequential frequency domain method performs estimates at a given interval while the batch method performs one estimation at the end of the maneuver. Both methods compared in this thesis produce equal results. The continuous updates of the sequential method was however found to be better suited for a real-time application than the single estimation of the batch method. The telemetric data received from the aircraft must be synchronized to a common frequency of 60 Hz. Missing samples of the data stream must be linearly interpolated and different units of measured parameters must be corrected in order to be able to perform these estimations in the real-time test environment.
17
Dominguez, Zachary. "Development of a novel organ culture system allowing independent control of local mechanical variables and its implementation in studying the effects of axial stress on arterial remodeling". Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26531.
Testo completoAbstract (sommario):
Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009.Committee Chair: Vito, Raymond; Committee Member: Gleason, Rudolph; Committee Member: Rachev, Alexander. Part of the SMARTech Electronic Thesis and Dissertation Collection.
18
Mardiasmo, Diaswati. "Good governance implementation and international allignment : the case of regional governments in Indonesia". Queensland University of Technology, 2007. http://eprints.qut.edu.au/16508/.
Testo completoAbstract (sommario):
The purpose of this study is to analyse the level of good governance understanding implementation in Indonesia regional governments, identify impeding variables to good governance implementation, and evaluate the extent of international good governance standards alignment. The influence of economic and political transition, decentralisation and regional autonomy regime, bureaucracy culture, and political history is analysed to reflect the degree of good governance implementation and level of convergence to international good governance standards. The methodological approach involves a triangulation of in-depth interview, document analysis, and International Good Governance Standard comparison. Findings from the study reflect disparities in good governance understanding and implementation between Indonesia regional governments, nine main impeding variables to good governance implementation including bureaucratic culture and political history, and a positive response to convergence towards international good governance standard alignment. Findings also act as an in depth study and analysis of current Indonesia regional government situation, resulting in inputs and recommendations geared towards public policy development and good governance implementation guidelines.
19
Henningsen, David. "Cost as an independent variable : implementation issues". Thesis, Monterey, California. Naval Postgraduate School, 1997. http://hdl.handle.net/10945/8159.
Testo completoAbstract (sommario):
This thesis will examine challenges defense department managers face when implementing the cost as an independent variable (CAIV) concept of cost control. The CAIV concept replaces the design-to-cost (DTC) concept which only achieved limited success. Emphasis is placed on identifying issues that managers faced implementing the DTC concept. These issues are analyzed to determine the potential cause of the issue and the impact the issue may have on programs implementing CAIV. It is the contention of this thesis that the CAIV concept and the DTC concept are in theory, virtually identical. Many of the same issues will surface during CAIV implementation that managers faced implementing DTC. CAIV may become another ineffective cost control measure. However, DTC was not usually implemented as intended by the guidance. In addition, acquisition reform has provided the manager implementing the CMV concept significant advantages over previous managers. With full management support, programs implementing the CAIV concept can succeed and provide cost effective systems that meet the needs of the user
20
Herdiana, Ratna. "Numerical methods for SDEs - with variable stepsize implementation /". [St. Lucia, Qld.], 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17638.pdf.
Testo completo
21
Jaffa, Steven. "Implementation of a fully variable valve actuation valvetrain". Master's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/11619.
Testo completoAbstract (sommario):
In January 2008 the Sasol (Pty) Ltd Advisory Board identified that the Sasol Advanced Fuels Laboratory's (SAFL) single cylinder research engine was not in line with the current engine technologies, in particular Fully Variable Valve Actuation (FVVA). This project represented the first stage of the engine upgrade, which was to modify the current single cylinder engine to interface with pneumatic valve actuators and a fully configurable Engine Control Unit (ECU).
22
Su, Wu-Chung. "Implementation of variable structure control for sampled-data systems /". The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu148785431487298.
Testo completo
23
Fuller, Arthur Thomas Gerald. "Design and implementation of Bode-type variable-amplitude digital equalizers". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0011/NQ59962.pdf.
Testo completo
24
Manjunath, Sharath. "Implementation of a variable rate vocoder and its performance analysis". Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06102009-063255/.
Testo completo
25
Kyritsis, V. E. "Thermodynamic preliminary design of civil turbofans and variable geometry implementation". Thesis, Cranfield University, 2006. http://dspace.lib.cranfield.ac.uk/handle/1826/11012.
Testo completoAbstract (sommario):
Implementation of Variable Geometry during the off-design operation of an aero gas
turbine engine may cause deviations for restricted engine parameters when
fight envelope requirements are met. A method to optimize the thermodynamic
cycle of a engine with respect to fuel burn, while meeting a variety of airframe
or
technological restrictions at the three major operating points of the fight
envelope, namely the Top of Climb, End of Runway and mid-cruise points is
developed. Purpose is the comparison of engines on a common basis. The method
is
implemented and performance benefits are identified in a variety of studies,
such as:
o the theoretically infinite Variable
Geometry in turbomachinery components
o reduction of the turbine coolant fraction
during cruise for long range civil
fights
o
optimal variable nozzle geometry implementation during steady state and
transient
operation
Core of the
optimization procedure is a zero-dimensional engine arithmetic
solver
developed by the author from scratch for a 3-spool and 2-spool engine
configuration. The solver utilizes real gas properties and an approximate dimensionless
enthalpy rise profile at the fan exit for the separate modeling of the fan
tip and hub region. Purpose for the development of the new code has been a
common arithmetic treatment for
steady-state and transient calculations within
the same
engine solver, which is thoroughly described.
26
Kalafat, Kizilkaya I. "Design and implementation of generalized topologies of time-interleaved variable bandpass Σ−Δ modulators". Thesis, University of Westminster, 2016. https://westminsterresearch.westminster.ac.uk/item/9x24v/design-and-implementation-of-generalized-topologies-of-time-interleaved-variable-bandpass-modulators.
Testo completoAbstract (sommario):
In this thesis, novel analog-to-digital and digital-to-analog generalized time-interleaved variable bandpass sigma-delta modulators are designed, analysed, evaluated and implemented that are suitable for high performance data conversion for a broad-spectrum of applications. These generalized time-interleaved variable bandpass sigma-delta modulators can perform noise-shaping for any centre frequency from DC to Nyquist. The proposed topologies are well-suited for Butterworth, Chebyshev, inverse-Chebyshev and elliptical filters, where designers have the flexibility of specifying the centre frequency, bandwidth as well as the passband and stopband attenuation parameters. The application of the time-interleaving approach, in combination with these bandpass loop-filters, not only overcomes the limitations that are associated with conventional and mid-band resonator-based bandpass sigma-delta modulators, but also offers an elegant means to increase the conversion bandwidth, thereby relaxing the need to use faster or higher-order sigma-delta modulators. A step-by-step design technique has been developed for the design of time-interleaved variable bandpass sigma-delta modulators. Using this technique, an assortment of lower- and higher-order single- and multi-path generalized A/D variable bandpass sigma-delta modulators were designed, evaluated and compared in terms of their signal-to-noise ratios, hardware complexity, stability, tonality and sensitivity for ideal and non-ideal topologies. Extensive behavioural-level simulations verified that one of the proposed topologies not only used fewer coefficients but also exhibited greater robustness to non-idealties. Furthermore, second-, fourth- and sixth-order single- and multi-path digital variable bandpass digital sigma-delta modulators are designed using this technique. The mathematical modelling and evaluation of tones caused by the finite wordlengths of these digital multi-path sigmadelta modulators, when excited by sinusoidal input signals, are also derived from first principles and verified using simulation and experimental results. The fourth-order digital variable-band sigma-delta modulator topologies are implemented in VHDL and synthesized on Xilinx® SpartanTM-3 Development Kit using fixed-point arithmetic. Circuit outputs were taken via RS232 connection provided on the FPGA board and evaluated using MATLAB routines developed by the author. These routines included the decimation process as well. The experiments undertaken by the author further validated the design methodology presented in the work. In addition, a novel tunable and reconfigurable second-order variable bandpass sigma-delta modulator has been designed and evaluated at the behavioural-level. This topology offers a flexible set of choices for designers and can operate either in single- or dual-mode enabling multi-band implementations on a single digital variable bandpass sigma-delta modulator. This work is also supported by a novel user-friendly design and evaluation tool that has been developed in MATLAB/Simulink that can speed-up the design, evaluation and comparison of analog and digital single-stage and time-interleaved variable bandpass sigma-delta modulators. This tool enables the user to specify the conversion type, topology, loop-filter type, path number and oversampling ratio.
27
Piskin, Hatice. "Design And Implementation Of Fir Digital Filters With Variable Frequency Characteristics". Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12606853/index.pdf.
Testo completoAbstract (sommario):
Variable digital filters (VDF) find many application areas in communication, audio, speech and image processing. This thesis analyzes design and implementation of FIR digital filters with variable frequency characteristics and introduces two design methods. The design and implementation of the proposed methods are realized on Matlab software program. Various filter design examples and comparisons are also outlilned. One of the major application areas of VDFs is software defined radio (SDR). The interpolation problem on sample rate converter (SRC) unit of the SDR is solved by using these filters. Realizations of VDFs on SRC are outlined and described. Simulations on Simulink and a specific hardware are examined.
28
Bourlis, Dimitrios. "Control algorithms and implementation for variable speed stall regulated wind turbines". Thesis, University of Leicester, 2011. http://hdl.handle.net/2381/28800.
Testo completoAbstract (sommario):
In this research control algorithms and implementation for variable speed stall regulated wind turbines are presented. This type of wind turbine has a simpler and more robust construction and can have lower requirements for maintenance than the existing pitch regulated wind turbines. Due to these features these wind turbines can have reduced cost, which is a crucial parameter especially for large scale wind turbines. However, this type is not commercially available yet due to existing challenges in its control. In this research a complete control scheme for variable speed stall regulated wind turbines has been developed and implemented in a fully dynamic hardware-in-loop simulator for variable speed wind turbines. The simulator was developed as part of the project in order to validate the designed control algorithms. The developed control system uses novel adaptive methods in order to maximize the energy production of the wind turbines at below rated wind speeds as well as to control the power of the wind turbine at above rated wind speeds. In addition, several types of controllers including robust controllers have been used and tested, which resulted to novel control solutions for stall regulated wind turbines. The main advantage of the proposed control method is that it uses existing hardware without requiring additional sensors, so it more effectively exploits information coming from measurements available in existing wind turbine converters. Through software and hardware simulations the proposed control algorithms seem to be quite promising and give confidence for the future development of variable speed stall regulated wind turbines.
29
Sager, Stefan Thomas. "Design and implementation of a grid-connected variable-speed PM WECS". Master's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/13392.
Testo completoAbstract (sommario):
Includes bibliographical references (leaves 120-122).As renewable energy (RE) sources are increasingly becoming an integral part of the world's power generation capacity, they are becoming more sophisticated and provide a solid platform for power generation today. Wind Energy is the fastest growing RE source. The correct understanding of issues associated with this technology and how to address them is integral in furthering this RE source... The main objective of the work presented in this thesis is the full understanding and implementation of a PM Wind Turbine System.
30
Jemibewon, Abayomi Oluwaseyi. "A Smart Implementation of Turbo Decoding for Improved Power Efficiency". Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/34072.
Testo completoAbstract (sommario):
Error correction codes are a means of including redundancy in a stream of information bits to allow the detection and correction of symbol errors during transmission. The birth of error correction coding showed that Shannon's channel capacity could be achieved when transmitting information through a noisy channel. Turbo codes are a very powerful form of error correction codes that bring the performance of practical coding even closer to Shannon's theoretical specifications. Bit-error-rate (BER) performance and power dissipation are two important measures of performance used to characterize communication systems. Subject to the law of diminishing returns, as the resolution of the analog-to-digital converter (ADC) in the decoder increases, BER improves, but power dissipation increases. The number of decoding iterations has a similar effect on the BER performance and power dissipation of turbo coded systems. This is significant since turbo decoding is typically practiced in a fixed iterative manner, where all transmitted frames go through the same number of iterations. This is not always necessary since certain "good" frames would converge to their final bits within a few iterations, and other "bad" frames never do converge.
In this thesis, we investigate the technical feasibility of adapting the resolution of the ADC in the decoder, and the number of decoding iterations, in order to obtain the best trade-off possible between BER performance and power dissipation in a communication system. With the aid of computer-aided simulations, this thesis investigates the performance and practical implementation issues associated with incorporating a variable resolution ADC into the decoder structure of turbo codes. The possibility of further power conservation resulting from reduced decoding computation is also investigated with the use of a recently developed iterative stopping criterion.
Master of Science
31
Bilgen, Onur. "Aerodynamic and Electromechanical Design, Modeling and Implementation Of Piezocomposite Airfoils". Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/28665.
Testo completoAbstract (sommario):
Piezoelectrics offer high actuation authority and sensing over a wide range of frequencies. A Macro-Fiber Composite is a type of piezoelectric device that offers structural flexibility and high actuation authority. A challenge with piezoelectric actuators is that they require high voltage input; however the low power consumption allows for relatively lightweight electronic components. Another challenge, for piezoelectric actuated aerodynamic surfaces, is found in operating a relatively compliant, thin structure (desirable for piezoceramic actuators) in situations where there are relatively high external (aerodynamic) forces. Establishing an aeroelastic configuration that is stiff enough to prevent flutter and divergence, but compliant enough to allow the range of available motion is the central challenge in developing a piezocomposite airfoil. The research proposed here is to analyze and implement novel electronic circuits and structural concepts that address these two challenges.
Here, a detailed theoretical and experimental analysis of the aerodynamic and electromechanical systems that are necessary for a practical implementation of a piezocomposite airfoil is presented. First, the electromechanical response of Macro-Fiber Composite based unimorph and bimorph structures is analyzed. A distributed parameter electromechanical model is presented for interdigitated piezocomposite unimorph actuators. Necessary structural features that result in large electrically induced deformations are identified theoretically and verified experimentally. A novel, lightweight electrical circuitry is proposed and implemented to enable the peak-to-peak actuation of Macro-Fiber Composite bimorph devices with asymmetric voltage range.
Next, two novel concepts of supporting the piezoelectric material are proposed to form two types of variable-camber aerodynamic surfaces. The first concept, a simply-supported thin bimorph airfoil, can take advantage of aerodynamic loads to reduce control input moments and increase control effectiveness. The structural boundary conditions of the design are optimized by solving a coupled fluid-structure interaction problem by using a structural finite element method and a panel method based on the potential flow theory for fluids. The second concept is a variable-camber thick airfoil with two cascading bimorphs and a compliant box mechanism. Using the structural and aerodynamic theoretical analysis, both variable-camber airfoil concepts are fabricated and successfully implemented on an experimental ducted-fan vehicle. A custom, fully automated low-speed wind tunnel and a load balance is designed and fabricated for experimental validation. The airfoils are evaluated in the wind tunnel for their two-dimensional lift and drag coefficients at low Reynolds number flow. The effects of piezoelectric hysteresis are identified.
In addition to the shape control application, low Reynolds number flow control is examined using the cascading bimorph variable-camber airfoil. Unimorph type actuators are proposed for flow control in two unique concepts. Several electromechanical excitation modes are identified that result in the delay of laminar separation bubble and improvement of lift. Periodic excitation to the flow near the leading edge of the airfoil is used as the flow control method. The effects of amplitude, frequency and spanwise distribution of excitation are determined experimentally using the wind tunnel setup.
Finally, the effects of piezoelectric hysteresis nonlinearity are identified for Macro-Fiber Composite bimorphs. The hysteresis is modeled for open-loop response using a phenomenological classical Preisach model. The classical Preisach model is capable of predicting the hysteresis observed in 1) two cantilevered bimorph beams, 2) the simply-supported thin airfoil, and 3) the cascading bimorph thick airfoil.Ph. D.
32
Gaddis, Don. "Implementation of cost as an independent variable : an AIM-9X case study". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA357103.
Testo completoAbstract (sommario):
Thesis (M.S. in Management)--Naval Postgraduate School, September 1998.Thesis advisor(s): Euske, Kenneth ;Cuskey, Jeffrey . "September 1998." Includes bibliographical references (p. 141-145). Also available online.
33
Makaroff, Dwight J. "Design, implementation and evaluation of a variable bit-rate continuous media file server". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ34586.pdf.
Testo completo
34
Trigo, Vidarte Luis. "Design and implementation of high-performance devices for continuous-variable quantum key distribution". Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLO021.
Testo completoAbstract (sommario):
La distribution quantique de clé (QKD) est une des premières technologies quantiques qui ait atteint un stade commercial, en proposant une solution au problème de la distribution d’une clé cryptographique entre deux entités, et en garantissant une sécurité à long terme. Elle est maintenant proche de la maturité technologique, et plusieurs méthodes sont disponibles en pratique. Cette thèse étudie la distribution quantique de clé à variables continues (CV-QKD), qui a plusieurs éléments communs avec les communications optiques cohérentes classiques, et qui pourrait permettre à beaucoup d’utilisateurs d’accéder à la QKD.L’utilisation de techniques de traitement numérique (Digital Signal Processor ou DSP), typiques en communications classiques, a été seulement partiellement exploitée dans les implémentations CV-QKD précédentes. Dans ce travail nous mettons en œuvre expérimentalement des techniques usuelles dans les communications classiques, comme la mise en forme d’impulsions, le filtrage adaptatif et la récupération de mode. Notre objectif est d’augmenter ainsi le taux de clé secrète, et d’optimiser l’utilisation de la bande passante disponible.La possibilité d'intégrer des composants dans un circuit photonique (PIC) est un autre avantage de CV-QKD. Nous avons testé un PIC en silicium intégrant un coupleur hybride 180º et deux photodiodes en germanium. Les paramètres mesurés sont compatibles avec la génération de clé secrète dans ces dispositifs.Un des facteurs les plus limitants de QKD est la chute des performances dans les canaux ayant des pertes très élevées, typiquement des fibres optiques dont la longueur dépasse la centaine de kilomètres. Mais la distance utile peut être étendue notablement en utilisant des liens en espace libre, en particulier avec des satellites, où les pertes à une certaine distance peuvent être inférieures à celles des fibres. Nous considérons un modèle pour le canal descendant et prédisons les taux de clé secrète attendus à différentes altitudes pour CV-QKD. Ces résultats aboutissent à une technologie potentiellement utilisable pour les communications par satellite, en étendant la portée jusqu’à des distances intercontinentalesQuantum key distribution (QKD) is one of the first quantum technologies that were able to provide commercially meaningful solutions to the problem of distributing cryptographic keys between trusted parties, guaranteeing long term security. It is now progressing towards technical maturity, by proposing multiple implementation alternatives. In this thesis, we study Continuous-Variables QKD (CV-QKD), which shares many common elements with classical coherent communication systems, and is a good candidate to facilitate the access to QKD for more users.The use of digital signal processing (DSP) techniques typical in classical communications has been only partially exploited in previous CV-QKD implementations. We experimentally implement standard telecommunication techniques like pulse shaping, adaptive filtering and mode recovery in order to improve the quantum secret key rate and optimize the occupied bandwidth.The potential of integration of the components in a photonic integrated circuit (PIC) is another important aspect of CV-QKD. We have tested a silicon photonics PIC integrating a 180º hybrid detector with two germanium photodiodes, showing that measured parameters are compatible with the generation of secret key.One of the most limiting factors of QKD is the performance under lossy channels, which is common in optical fibre for distances in the order of hundred kilometers. The range can be significantly extended using free space communications, and in particular satellites, where the losses at longer distances can be lower than those in fibre. We consider a model for a downlink satellite channel and predict the achievable secret key rates at different altitudes for CV-QKD, resulting in a potentially feasible technology for satellite communications, extending the range to intercontinental distances
35
Barendse, Paul Stanley. "Design and implementation of variable speed wind energy induction generator systems for fault studies". Master's thesis, University of Cape Town, 2004. http://hdl.handle.net/11427/14971.
Testo completoAbstract (sommario):
Includes bibliographical references (leaves [136]-139).Due to the economical and environmental benefits, Wind Energy Conversion Systems (WECS) have received tremendous growth in the past decade. The increased interest in wind energy has made it necessary to model and experimentally evaluate entire WECS, so as to attain a better understanding and to assess the performance of various systems. As a direct consequence of the increase in wind generation systems, comes the need for the reduction of operational and maintenance costs of these wind generators. The most efficient way of reducing these costs is by the early detection of the degeneration of these generators health, thus facilitating a proactive response, minimizing downtime, and maximizing productivity. The more common induction machine failures are caused by the deterioration of the stator insulation and by the breaking of rotor bars. The thesis describes the design, modeling and implementation of two different variable speed induction generator systems for studying faults in wind energy applications. This project served as a platform for further research into the development and evaluation of a non-stationary fault detection technique suitable for wind energy induction generator purposes. Some common faults are implemented on the wind generators in an attempt to identify them from measurements and by using a steady state fault analysis technique (Motor Current Signature Analysis). For variable speed wind generation, there are two systems using induction generators. The first consist of a squirrel cage induction generator, which uses back-to-back converters in the stator circuit, as shown in Fig. 0.1. The second consists of a wound rotor induction generator, whereby the stator is directly connected to the grid and the rotor circuit consists of back-to-back converters, as shown in Fig. 0.2. When both the rotor and stator are capable of delivering power as with the wound rotor induction generator, they are known as doubly-fed induction generators (DFIG).
36
Chou, Li-Wen, e 周立文. "The Relationship Between Implementation Variables and Performance of ERP Systems". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/qwahxy.
Testo completoAbstract (sommario):
碩士國立中央大學
企業管理研究所
94
Abstract The purpose of this paper is to explore the relationship between some implementation variables and performance of ERP system. DeLone and MacLean(1992) surveyed 180 articles attempting to measure information systems success and proposed an analysis framework, composed of six dimensions, for assessing the ERP performance in the post-implementation stage. In this paper, DeLone and McLean’s framework will be used to develop the ERP performance measures fit for ERP adopters of Taiwan. The implementation variables explored in this paper are ERP implementation statutes, ERP system sources, and ERP implementation strategies. Structured questionnaire were send to those companies listed in the TOP500 The Largest Corporations in Taiwan 2001. The research finding indicate that the company using non-packaged ERP systems, integral planning and having implemented all the planned ERP modules will have the better performance improvement.
37
Hsu, Jung-Chang, e 徐榮昌. "Moderating Effects of ERP Project Management Variables on ERP Successful Implementation". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/79032454687590097292.
Testo completoAbstract (sommario):
碩士國立中正大學
資訊管理學系暨研究所
99
Enterprise resource planning (ERP) systems are large and complex information systems. ERP implementations are frequently failed. Previous studies pointed out that information system project management is critical to information system succes . However, the roles of ERP project management on ERP successful implementation are often neglected. In this research , we examine the moderating effects of ERP project management variables on ERP successful implementation based on Hong and Kim (2002). To empirically test the research model, we conducted a survey to top 500 firms in Taiwan Sixty-nine valid questionnaires were collected. The analytical results indicate that organizational fit of ERP has a positive effect on ERP implementation success. ERP project management variables including team member competence, top management support, user training, and consultant support have significant moderating effects on the relationship between organizational fit of ERP and ERP implementation success. Finally, implcations for academics and practitioners are also provided.
38
Huang, Po-Hsuan, e 黃柏勳. "Implementation on the Barrier Functions for Linear Programming with Bounds on Variables". Thesis, 1998. http://ndltd.ncl.edu.tw/handle/03780038955120308911.
Testo completoAbstract (sommario):
碩士國立中正大學
應用數學研究所
86
In this paper, we consider a linear programming problem with boundson variables. These upper bounds and lower bounds of the variables forthis linear programming problem can be nonfinite. Thus, the variablescan be free, 1-sided or 2-sided bounded. In this paper, we first introduce an algorithm proposed by Freund and Todd in 1995 to solve this problems. Then we introduce how to get a starting point of thisalgorithm. Finally, we implement the algorithm with two numerical examples and compare the behavior of the algorithm with two barrier functions.
39
LIN, JIN-YUAN, e 林錦源. "Implementation of a multi-functional stimulation and measurement system for physiological variables". Thesis, 1990. http://ndltd.ncl.edu.tw/handle/11909695207678519367.
Testo completo
40
Yang, Hisn-Chien, e 楊欣潔. "The Implementation of Special Education Teachers’ Background Variables on Gender Equity Education: A Meta-analysis". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/26103122451340815725.
Testo completoAbstract (sommario):
碩士國立臺中教育大學
特殊教育學系碩士在職專班
102
Abstract The aim of this research to adopt the meta-analysis to analyze the implementation of Gender Equity Education on the special education teachers. It began with a systematic search for empirical studies from on-line database; 17 studies about the implementation of Gender Equity Education on special education teachers were collected. Hedges and Olkin (1985) meta-analysis was employed to calculate the values in analysis. The results of the study were listed as follows: 1. The gender would affect female more than male special education teachers’ teaching experience in the education of gender equality. The gender would also affect teachers’ learning needs of special education in gender equality domain, with males higher than females. 2. Years of teaching would affect the level of difficulty special education teacher feel about the teaching of gender equality education, with 10 years below feeling more difficult than 11 years above. 3. The marital status would affect the level of difficulty special education teacher feel about the teaching of gender equality education, with unmarried feeling more difficult than married. The marital status would also affect administrative special education teachers’ support needs in gender equality education, with unmarried feeling more difficult than married. Finally, based on this study results, the researcher brings the suggestions to the gender equity education and future research.
41
"The impact on the variables of the microstructure due to the implementation of an electronic trading system: Evidence from the Mexico exchange". Tulane University, 2006.
Cerca il testo completoAbstract (sommario):
archives@tulane.eduAn automated trading system has taken place in recent years m the Mexico Stock Exchange and reflects the importance of information and the trading system on the market quality. Evaluating the impact of an electronic trading system is of particular importance and interest to regulators, exchange policy makers and systems builders. The change of the trading mechanism in the Mexico Stock Exchange represents a natural experiment to compare the behavior of the stocks traded in this market, regarding the microstructure variables, before and after the implementation of the Electronic Trading System. Hence, the purpose of this dissertation is to evaluate the impact of the migration from a floor trading system to an automated mechanism to trade, on the variables of microstructure. This dissertation seeks to provide new evidence, from an emerging market, on this important debate and extends the literature by comparing the variables of microstructure across two different trading mechanisms for the same stock market, providing a more rigorous experiment than some of the existing ones.
1
Admin
42
Shernoff, Elisa Steele. "Transporting an evidence-based classroom management program for preschoolers with disruptive behavior problems to a school : an analysis of implementation, outcomes, and contextual variables /". 2004. http://catalog.hathitrust.org/api/volumes/oclc/61463033.html.
Testo completo
43
Yang, Shu-Heng, e 楊述恆. "THE IMPACT OF ERP KEY SUCCESS FACTORS ON USER SATISFACTION AND ORGANIZATIONAL PERFORMANCE: WITH THE NUMBER OF ERP MODULES AND DURATION AFTER IMPLEMENTATION AS MODERATING VARIABLES". Thesis, 2016. http://ndltd.ncl.edu.tw/handle/459k8v.
Testo completoAbstract (sommario):
碩士大同大學
事業經營學系(所)
104
The purpose of this study is to explore the impacts of ERP key success factors on user satisfaction and organizational performance. Of the 200 questionnaires delivered, a total of 108 valid responses were received, yielding a response rate of 54%. Then the empirical data were analyzed by using SPSS 21.0 and the hypothesized structural equation modeling (SEM) was tested using AMOS 21.0. The research results confirmed that: critical success factors of ERP system positively affect user satisfaction and organizational performance, but user satisfaction does not affect organizational performance. In addition, "the number of the module" and "the duration after implementing ERP system” do not have the moderating effects on the relation between ERP key success factors and user satisfaction, and between ERP key success factors and organizational performance.
44
Mallon, Ryan. "The semantics, formal correctness and implementation of history variables in an imperative programming language : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Science in the University of Canterbury /". 2006. http://library.canterbury.ac.nz/etd/adt-NZCU20070730.163725.
Testo completo
45
Liang, Wen-ko, e 梁文科. "Hardware Implementation for Variable Length FFT Processor". Thesis, 2007. http://ndltd.ncl.edu.tw/handle/76866803398872404942.
Testo completoAbstract (sommario):
碩士國立中山大學
通訊工程研究所
95
A single chip of variable length FFT processor is presented in this thesis. This processor can be applied for the applications with 128/256/512/1024/2048-point FFT. This processor is based on SDF (single path delay feedback) pipeline architecture with radix-2^3 computation element. The number of bits for input data and twiddle factors is carefully selected by system simulation to meet the requirements of OFDM system. In addition, we propose a feedback twiddle factor generator to instead the lookup table for twiddle factors to reduce the storage size of memory. The FFT processor is carried out by CMOS 0.35μm 2P4M process with core area 3.381x3.3625 mm^2. In the gate level simulation, the output data rate of this FFT processor is above 22.72MHz, so the processor can meet the requirement of IEEE 802.16e standard.
46
Su, Yen-Cheng, e 蘇晏徵. "Design and Implementation of the Variable-Structured Motor". Thesis, 2016. http://ndltd.ncl.edu.tw/handle/18347028494819434336.
Testo completoAbstract (sommario):
碩士國立聯合大學
機械工程學系碩士班
105
In current society, science and technology development is changeable and the industry is rapidly developing so that automation has become popular. Motors have been broadly applied from industry to staple merchandise. Especially, the boom of semiconductor electronics has brushless direct current motors (BLDC Motor) become the most potential motor product and be gradually promoted in various fields, such as industrial machines, military equipment, household electrical appliance, and motor-driven carriers. When a brushless DC motor is applied to electric vehicles, the high-speed characteristics could not satisfy the needs of the system characteristics. A brushless DC motor runs in a rated power area that the back electromotive force would enhance with increasing rotating speed. It therefore reduces the input current and the turning moment which sharply decrease the turning moment-rotating speed characteristic curve in the rated power area so that the needs of high-speed speed multiplying for electric vehicles could not be satisfied. It is therefore worth in-depth discussion to enhance the high rotating speed characteristics of motors. Meanwhile, it is a critical technique to apply motors to electric vehicles. For this reason, a mechanical variable structure is proposed to enhance the output characteristics of motors in high speed. The electromagnetic field simulation software (Ansys Maxwell) is applied in this study to assist in the motor magnetic circuit design and the characteristic analysis. A variable structured motor is further implemented to verify the practicability.
47
Hsu, Pei-Chun, e 徐佩群. "DESIGN AND IMPLEMENTATION OFMEMORY-BASED VARIABLE LENGTH FFTPROCESSORS". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/56201618403036556666.
Testo completoAbstract (sommario):
碩士大同大學
電機工程學系(所)
97
The FFT algorithms considered here include radix-2, radix-4, radix-22 and, split-radix2/4, which is the subject of this study. We use memory-based architecture to Design and implementation, and choose the algorithm, radix-2. Then we improve it’s efficience with the radix-22 algorithm. Taking the advantages of low hardware cost of memory based FFT (MBFFT) architectures , this study improves the speed perfor- mance. The improvement can be achieved by an efficient memory retrieval scheme for reducing the control complexity and a clocksche- me. Instead of using dual-port memory for data storage and retrieval, our design uses single-port memory. The FFT processor has been implemented by using verilog and ModelSim for circuit design and simulation, respectively.
48
Chen, Jing Jhih, e 陳景智. "Design and Implementation of H.264 Variable Block Size Motion Design and Implementation of H.264 Variable Block Size Motion Estimation". Thesis, 2007. http://ndltd.ncl.edu.tw/handle/65097939673894177646.
Testo completoAbstract (sommario):
碩士清雲科技大學
電子工程研究所
94
The block occupies is important position than to the algorithm of performing in the code system of the dynamic image. Because it, for dispelling the redundancy on time in the code system of video-information, it is a simplest and effective method. Thesis this adopt one efficient hardware structure to accomplish H.264 variable block matching. This hardware circuit by way of the prove simulation, and H.264 variable block than practical operation of the Xilinx FPGA. This text adopts FPGA that three kinds of Xilinx introduce and develops the board and chip type, elect the chip most suitable for the structure of a hardware, develop the mode of variable block circuit.
49
Hu, Chung-Rong, e 胡展榮. "Design and TMS320C30 Implementation of Variable Bit-Rate Vocoders". Thesis, 1997. http://ndltd.ncl.edu.tw/handle/93882534452822632089.
Testo completo
50
Wang, Chen-Yang, e 王振洋. "Design and Implementation of Variable Fractional-Delay Digital Filters". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/79482996781217230584.
Testo completoAbstract (sommario):
碩士國立高雄大學
電機工程學系碩士班
98
In the thesis, three types (finite impulse response, allpass, and infinite impulse response) of design on variable fractional-delay filters are proposed, and the technique of weighted-least-square method will be applied. For the implementation of the designed system, Farrow structure will be incorporated in the design of the stated variable fractional-delay filters. In the hardware design, shifting method takes the place of floating-point unit in order to decrease the complexity of circuits. The circuits are designed in Verilog harware description language with ModelSim. After making sure the fuctions are correct, we compare waveforms with the outcomes of theoretical computation. The schematics after synthesizing from Design Vision are showed in the end of each chapter. Area reports, timing reports, and power reports will be found in the appendix.