Dissertations / Theses: 'Performance optimization of rating system'

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Вєтошкін, Ігор Володимирович. "Рейтингова система навчання студентів з дисципліни робототехніка." Master's thesis, КПІ Ім. Ігоря Сiкорського, 2019. https://ela.kpi.ua/handle/123456789/31789.

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В цій роботі розглянуто проблему у області оптимізації веб-додатків, а саме оптимізація рейтингової системи. Проаналізовано аналоги рейтингових систем для навчання студентів та інформаційні системи, які ознайомлюють користувачів з навчальними закладами, визначено їх основні переваги та недоліки. На основі отриманих результатів визначені основні необхідні модулі, які повинна містити дана система, способи її оптимізації та забезпечення належної швидкодії. В результаті виконання дипломної дисертації розроблено рейтингову систему для навчання студентів. В рамках веб-додатку, здійснено її оптимізацію та значно підвищено швидкодію за рахунок оптимізації структури бази даних, використання фреймворку React в розробці клієнтської частини для створення SPA, впровадження додаткової системи кешування даних, оптимізації запитів до бази даних. Розмір пояснювальної записки – 88 сторінок, 48 ілюстрацій, 22 таблиці та 2 додатки.
This master thesis shows the problem of web application optimization, describes the optimization of the rating system. Analogues of rating systems for student education and information systems were analyzed, their main advantages and disadvantages were identified. On the basis of the obtained results, the basic necessary modules, which should be contained by the given system, ways of its optimization and ensuring proper performance, were created. As a result of the master thesis completion, a rating system for learning students was developed. In the web application, optimization was completed and performance was significantly increased due to optimization of the database structure, using of React framework in the development of the client side for creating SPA, implementation of additional data caching system, optimization database queries. Explanatory note size – 88 pages, contain 48 illustrations, 22 tables and 2 applications.

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Sonti, Phindile Clinton. "Improving the performance management system in a selected firm." Thesis, Nelson Mandela Metropolitan University, 2015. http://hdl.handle.net/10948/d1021172.

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The performance management system has become a vital process of retaining skilled employees, helping to improve communication between the employees and management, providing feedback to employees and clear understanding of job expectation. A performance management system assists the firm to identify the ways to improve individual and firm performance and provides the opportunity for discussion about individual career direction and growth within the firm. It provides the opportunity to set employee targets linked to the departmental targets. The performance management system is the catalyst for firms to become globally competitive and be able to meet targets. Over the years the firm has introduced a performance management system to help employees to achieve their targets, which will result in the company meeting its own objectives. The study focused on the factors that affect the performance management system. The objective of the research was to improve the performance management system of the firm. The study was conducted to assess the effect of the following independent variables on the improvement of the performance management system: leadership style, training, organisational culture, reward system and organisational communication. The sample consisted of only the employees of the firm selected for the study. One hundred and fifty (150) questionnaires were distributed, but only seventy-six (76) respondents (response rate = 50.7 percent) participated in the final study. The empirical results revealed that the three independent variables play a very important role in improving a performance management system. These three variables are organisational culture, training, and reward system. Implementing the recommendations that came from these results will go a long way to making sure that the firm will improve its performance management system.

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Babar, Haseeb Zaman, and Gul Zeb. "Camels rating system for banking industry in pakistan : does CAMELS system provide similar rating as PACRA system in assessing the performance of banks in Pakistan?" Thesis, Umeå universitet, Handelshögskolan vid Umeå universitet, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-48325.

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Financial sector of an economy plays an important role in its economic development and prosperity of the country. Banking industry serves as the backbone of the financial sector that accumulates saving from surplus economic units in the form of deposits and provides it to deficit economic units in the form of advances. Banking industry provides support to economy and industries in specific in the time of recessions and economic crisis. But when banks are at the heart of economic recession or banks are the cause of financial crisis like the recent past financial crisis 2007-09, it makes the situation worst for economic recovery. So it is of great importance to keenly observe the performance of the banks and their compliance with the regulatory requirements. Performance of the banks is measured at two levels, one is at the management and regulatory level of the banks and another is at external rating agencies. Purpose of regulatory and supervisory rating systems is to measure the bank performance at internal level and its compliance with regulatory requirements to keep the bank on right track. These ratings are highly confidential and are only available to the bank management. External credit rating agencies examine and evaluate the banks and issue ratings for the general public and investors in particulars. It is of great importance that both these ratings present the same results about the condition of the banks to provide clear information to investors and management. In past several banks suffer from bankruptcy that was the failure of both internal rating systems and credit rating agencies. CAMELS is the supervisory and regulatory rating system implemented by State Bank of Pakistan. It takes into account six important components of a bank when it evaluates performance of the bank. These components are Capital, Assets, Management, Earning, Liquidity and Sensitivity to market risk. Ratings is assigned to theses components on the scale of 1 to 5 and that is a base for composite rating that also ranged from 1 to 5. PACRA rating agency is the dominant credit rating agency of Pakistan that performs ratings for most banks and industries in the country. In our research we examine the similarities in the results generated by CAMELS rating system and PACRA rating agency. For that purpose we sample seventeen commercial banks of Pakistan Banking industry. We observed that results generated by sample banks do not show any similarities with each other. This might be an indication of the banks that went on to bankruptcy in past three to four years or a future threat to financial sector of Pakistan.

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蘇靜如 and Ching-yu So. "A study on the performance appraisal system of the Hong Kong Immigration Department." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41015630.

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del, Valle Yamille E. "Optimization of power system performance using facts devices." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29612.

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Thesis (Ph.D)--Electrical and Computer Engineering, Georgia Institute of Technology, 2010.
Committee Chair: Dr. Ronald G. Harley; Committee Member: Dr. Bonnie Heck; Committee Member: Dr. Deepak Divan; Committee Member: Dr. Ganesh K. Venayagamoorthy; Committee Member: Dr. Miroslav Begovic. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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Konradi, Alexander V. "Performance optimization of the VDFS verified file system." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/113179.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2017
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 51-54).
Formal verification of software has become a powerful tool for creating software systems and proving their correctness. While such systems provide strong guarantees about their behavior, they frequently exhibit poor performance relative to their unverified counterparts. Verified file systems are not excepted, and their poor performance limits their utility. These limitations, however, are not intrinsic to verification techniques, but are the result of designing for proofs, not performance. This thesis proposes a design for large files and in-memory caches that are amenable both to a high-performance implementation and proofs of correctness. It then describes their usage in VDFS, a verified high-performance file system with deferred durability guarantees. The evaluation of VDFS' performance shows that these additions measurably improve performance over previous verified file systems, and make VDFS competitive with unverified file system implementations. This thesis contributes implementation techniques for large files and in-memory caches that can be applied to increase performance of verified systems..
by Alexander V. Konradi.
M. Eng.
M.Eng. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science

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Liu, Charles Z. "Performance optimization of a split-value voting system." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/100631.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 57-59).
As digital technology becomes more powerful and commonplace, the benefits of using computers to conduct elections become more apparent. In today's elections dominated by paper ballots, we cannot be certain that the election result is correct. Many parts of the world are plagued by corrupt election officials and rampant bribery. In this thesis, we review the cryptographic techniques available for designing a secure election system and introduce a system designed around a verifiable mixnet using split-value commitments. The main work done in this thesis is a series of performance optimizations to the existing prototype, greatly improving the real-world viability of the system. Finally, we suggest further work that can be done to improve performance, fault tolerance, and security. The code that accompanies this thesis may be found at https://github.com/ron-rivest/ split-value-voting.
by Charles Z. Liu.
M. Eng.

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Rajagopalan, Mohan. "Optimizing System Performance and Dependability Using Compiler Techniques." Diss., Tucson, Arizona : University of Arizona, 2006. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1439%5F1%5Fm.pdf&type=application/pdf.

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Karlsson, Rikard. "Power system performance when implementing dynamic rating on a wind farm connected transformer." Thesis, KTH, Elektroteknisk teori och konstruktion, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-215949.

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In this study, dynamic transformer rating (DTR) is applied on a medium power transformer thatis in use in the regional transmission grid. The transformer’s rated apparent power is 63 MVA, itis connected between a wind farm at 22kV and the grid, K¨orsb¨arsdalen, at 135kV. Power systemanalysis are carried out on the grid, with the objective to test how DTR and increased wind poweraffects the grid performance with respect to reliability, voltage stability and active losses.Historical measurements of ambient temperature and transformer loading is used to calculatefree transformer capacity based on unity life time loss. For the investigated transformer and giventime period the load can be increased without endanger transformer lifetime. The dynamicallyrated capacity exceeds the nominal capacity through the whole tested time period but DTR showsmost effective during winter when the ambient temperature is colder and therefore, has a coolingeffect on the transformer. DTR is used to calculate available transformer capacity but an increasedcapacity often comes with the expense of decreased lifetime and reliability. With the help of DTRthe current rate of transformer lifetime usage can be calculated and used as input to economicalanalysis where there is a trade of between reliability and profit from increased capacity.Through the power system analysis procedure presented in this report it is possible to sortout the faults that are most probable to cause severe violations, this information can be used forefficient reinforcement of the grid. The contingency and reliability analysis can work as base tofind the solutions that will decrease the probability for violations most efficiently. Furthermore,the developed procedure can also be used when expanding the grid and to determine which gridalternative that will be most reliable.
I den h¨ar studien kommer en dynamisk modell f¨or en transformators maxkapacitet anv¨andas isyfte att utv¨ardera m¨ojligheterna f¨or utbyggnad av vindkraftsparken som ¨ar kopplad till transformatornsl°agsp¨anningssida. P°a transformatorns h¨ogsp¨anningssida finns regionn¨atet, K¨orsb¨arsdalen.Med hj¨alp av den dynamiska modellen ber¨aknas transformatorns varmaste punk. Dem varmastepunkten ¨ar bel¨agen p°a ¨ovre delen av transformatorns lindning. Det ¨ar denna punkts temperatursom s¨atter gr¨ansen f¨or hur mycket str¨om som kan s¨andas genom transformatorn utan att resultera io¨verhettning. O¨ verstiger den varmaste punkten en kritisk temperatur finns risk fo¨r att transformatornlivsl¨angd f¨orkortas. Konceptet dynamisk lastbarhet som bygger p°a termiska modeller kallasp°a engelska ,dynamic transformer rating (DTR).Vidare utv¨arderas effekterna av DTR p°a systemniv°a, K¨orsb¨arsdalens prestanda d°a DTR harimplementeras j¨amf¨ors med det ursprungliga n¨atets prestanda med avseende p°a tillf¨orlitlighet,sp¨anningsstabilitet och aktiva f¨orluster.Historiska m¨atv¨arden p°a omgivningstemperatur och transformatorns last anv¨ands f¨or att ber¨aknatransformatorns tillg¨angliga kapacitet, f¨or det studerade tidsspannet kan transformatorn anv¨andas¨over dess nominella effekt. P°a vintern d°a omgivningstemperaturen ¨ar l°ag kommer DTR till st¨orstnytta, den kalla luften har en kylande effekt p°a transformatorn vilket i sin tur betyder att en st¨orrestr¨om kan s¨andas genom transformatorns lindningar utan att en kritisk temperatur uppn°as.Genom det presenterade tillv¨agag°angss¨attet f¨or systemkraft analyser kan de fel som har st¨orstsannolikhet att resultera i allvarliga konsekvenser sorteras ut. Denna information kan anv¨andassom underlag f¨or reinvesteringar s°av¨al som vid expandering av det befintliga n¨atet.

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潘安妮 and On-ni Anny Poon. "Evaluating HKU's performance review and staff development system: a principal-agent perspective." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41012902.

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Chalise, Batu Krishna. "Beamforming for performance optimization of a cellular radio system." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=980238048.

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Lebsack, Carl Stephen. "Performance analysis and optimization of the Java memory system." [Ames, Iowa : Iowa State University], 2008.

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Arumugam, Gnana Shekaran. "ALTERNATE MODELS FOR NATURAL GAS TRANSPORTATION SYSTEM PERFORMANCE OPTIMIZATION." UKnowledge, 2015. http://uknowledge.uky.edu/ms_etds/7.

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The Natural Gas market in the U.S is growing rapidly with evidence that the nation has enough shale reserves to power the country for the next century. To ensure continued economic benefits through the use of this environmentally desired energy source, it becomes important to optimize the transportation network system design. Transportation through pipelines is one of the most common methods used to distribute Natural Gas from source to destination. This transportation system, consisting of pipelines, compressors and other supporting equipment, must be optimized, considering all relevant parameters to minimize cost and increase profit. The research presented here improves on the fuel cost minimization models in literature to incorporate pipeline elevation and safety requirements. A new model is proposed to consider the entire transportation network as a single system and optimize it considering all relevant parameters. The optimization model is setup as a mixed integer nonlinear program. The proposed model is used to optimize the pipeline network for a case study, evaluate the model as well as investigate design capacity and installed capacity of pipeline network.

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Chung, Ka Kei. "Interactive visual optimization and analysis for RFID system performance /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?CSED%202009%20CHUNG.

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Robert-Demolaize, Guillaume. "Design and performance optimization of the LHC collimation system." Université Joseph Fourier (Grenoble), 2006. http://www.theses.fr/2006GRE10215.

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Le Large Hadron Collider (LHC) du CERN est une machine circulaire utilisant des aimants supraconducteurs à fort champ pour faire circuler deux faisceaux de protons ayant une énergie maximale de 7 TeV. La luminosité de faisceau maximale est estimée à 10 34 cm2s-1. Il est important de nettoyer chaque faisceau de son halo afin d'éviter le quench d'un aimant; on utilise alors des collimateurs, installés à des endroits adéquats de la machine de sorte à constituer un système multi niveau. L'inefficacité de ce système doit être bien plus petite que pour tout autre machine, soit environ 0. 00002 % à 7 TeV. Des simulations détaillées de conditions opératoires réalistes ont été réalisés, afin d'estimer la réponse du système selon chaque cas. Des cartes donnent la répartition des pertes locales de protons le long de la machine avec une résolution de 10 cm. Le niveau de performance du système de collimation du LHC est donné pour le cas idéal et pour un scénario d'erreur d'orbite: l'intensité maximale de la machine est limitée à respectivement 43 % (cas idéal) et 27 % (modèle d'erreur) de la valeur nominale. Une liste des positions caractéristiques de pertes est établie afin d'optimiser le système de protection de la machine. Un prototype de collimateur fut teste en conditions de faisceau LHC. Le contrôle de l'ouverture du collimateur est possible avec une précision de 50 μm ; des résultats intéressants sur l'action du collimateur sur le faisceau ont également été obtenus. Des tests de résistance de matériau ont aussi été menés, les données enregistrées ont ensuite été comparées aux simulations numériques afin de confirmer les estimations en termes de dépôt d'énergie et déformations
The Large Hadron Collider (LHC) of CERN is a circular machine using superconducting magnets to achieve the large bending fields required to run two proton beams up to a 7 TeV energy. The maximum foreseen luminosity is set to L = 1034 cm2s-1. Halo particles that drifted away from the core of the beam must be removed for superconducting quenches to be avoided. This is achieved with a multi-stage cleaning system using two-sided collimators located at adequate positions in the machine. Due to the high luminosity value, the required inefficiency of the LHC collimation regions must be much lower than any other machine, around 0. 00002 % in the top energy case. Detailed simulations ofrealistic operational conditions were performed to address the sensitivity ofthe cleaning system. Bearn 10ss maps show the distribution oflocal proton losses around the machine to the 10 cm level. The level of performance ofthe LHC collimation system is given in the ideal machine case and for a realistic scenario of orbit perturbation : the machine can only be run with respectively 43 % (ideal case) and 27 % (error model) of the nominal machine intensity. A list of characteristic loss locations is also given to help monitor beam losses at optimal locations regarding machine protection issues. A prototype collimator was tested in real LHC-like beam conditions. The control of the collimator gap was achieved down to the 50 μm 1evel, and interesting results on the actual beam physics with collimation were also obtained. The robustness of the graphite collimator jaws was also tested and results were compared with simulation programs to validate aIl previous estimates on energy deposition studies

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Coulibaly, Ibrahim. "Microcomputer based optimization model for photovoltaic system performance analysis." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/104314.

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Cronje, Standford Ebraim. "An individualized performance appraisal system for academic staff at Peninsula Technikon." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52111.

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Thesis (MPhil)--University of Stellenbosch, 2001.
ENGLISH ABSTRACT: Higher education depends heavily on government funding, yet the tendency in both industrial and developing countries is one towards a decrease in budget allocation for the maintenance or improvement of higher education. At the same time institutions of higher learning are increasingly required to give account of that performance. Higher Education institutions will have to explore avenues of raising revenue other than government funding. Decisions with regard to promotion and salary increases, which form a substantial part of the expenditure on the institutional budget, must therefore be based on justifiable grounds if these institutions are to remain viable. It is for this reason that performance appraisal of academic staff assumes increasing significance. This study addresses the aspect of introducing an individualised performance appraisal system for academic staff. The research is in the format of a literature review of performance appraisal in higher education followed by a questionnaire survey and interviews among academic staff at an institution of higher learning. The questionnaire survey and interviews prove that performance appraisal for academic staff is necessary. According to the interviews there is, however, not substantive support for an individualised performance appraisal system for academic staff. In view of the support for performance appraisal elicited by the questionnaire survey, however, the research recommends that an individualised performance appraisal system be introduced for academic staff on an experimental basis, and that the research goal be subjected to further research in a more extensive manner by taking a bigger sample and employing different research methods.
AFRIKAANSE OPSOMMING: Die hedendaagse tendens in hoër onderwys dui op 'n vermindering van finansiële ondersteuning deur die owerheid aan instellings vir hoër onderwys, ten spyte daarvan dat sodanige instellings hoofsaaklik aangewese is op die owerheid vir befondsing vir die handhawing, of selfs verbetering, van hoër onderwys. Terselfdertyd word daar groter verantwoording van instellings vir hoër onderwys vereis. Instellings van hoër onderwys sal ernstige oorweging daaraan moet skenk om ander inkomstebronne as staatsbefondsing te bekom, ten einde die befondsing deur die owerheid aan te vul. Bevordering en salarisverhogings vorm 'n groot deel van die uitgawes op die begroting van die instelling. Besluite in hierdie verband behoort derhalwe geneem te word op gesonde grondslae. Dit is om hierdie rede dat prestasieboordeling van doserende personeel toenemende belangrikheid aanneem. Hierdie navorsmg fokus _ op die instelling van 'n geïndividualiseerde prestasiebeoordelingstelsel vir doserende personeel. Die navorsing is in die formaat van 'n literatuurstudie van prestasiebeoordeling in hoër onderwys, gevolg deur 'n vraelysondersoek en onderhoude met doserende personeel by 'n instelling vir hoër onderwys. Die vraelysondersoek en onderhoude bewys dat prestasiebeoordeling van doserende personeel wel nodig is. Daar is egter, volgens die onderhoude, onvoldoende steun vir 'n geïndividualiseerde stelsel van prestasiebeoordeling vir doserende personeel. In die lig van die ondersteuning vir prestasiebeoordeling soos blyk uit die vraelysondersoek, beveel die navorsing aan die instelling van 'n geïndividualiseerde prestasiebeoordelingstelsel vir doserende personeel op 'n proefbasis, en dat meer intensiewe navorsing ten opsigte van die navorsingsdoelwit gedoen word deur 'n groter steekproef te neem en verskillende navorsingsmetodes te gebruik.

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Bliss, Martin. "Measurement system for fast power and energy rating of photovoltaic devices." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/8336.

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This thesis presents a new type of solar simulator and new measurement methods that allow for fast power rating of photovoltaic devices and for fast performance measurements for energy rating and energy yield predictions indoors under controlled, and more realistically simulated outdoor conditions. A novel indoor measurement system for photovoltaic device characterisation based on light emitting diodes (LEDs) as the light sources is described. The solar simulator is capable of reproducing spectral changes seen in natural sunlight, with its intricacies of variable air mass and weather conditions, to a better match than previously possible. Furthermore, it allows measurements under varying light intensity and device temperature. The prototype LED-based solar simulator developed is characterised and its measurement quality is analysed. The system achieves a class BAA solar simulator classification with a class B spectral match, class A light intensity uniformity and a class A temporal stability. It is the first system of its kind that meets the standards of a solar simulator in spectral match to the standard sunlight spectrum and in terms of minimum light intensity. An uncertainty analysis shows that calibration uncertainty for crystalline silicon solar cells is 5% in maximum power with a 95.45% level of confidence. Recommendations for further versions of the solar simulator are given and show potential of reducing this uncertainty down to 2.9% across all measurement spectra (1.8% with a primary calibrated reference cell). A new method for automated power-rating of single- and multi-junction devices is developed. The method uses a unique spectral response measurement and fitting method. It eliminates the need of external measurement equipment for determining spectral response. A simulated characterisation of an amorphous silicon single- and double-junction solar cell show accuracy of better than 0.5% in maximum power. First measurements on the LED-based solar simulator show a measurement error of 4.5% in maximum power, which is due to a lack of measurement feedback of spectral output and measurement irradiance. The first three-dimensional performance matrix for use in photovoltaic energy rating is reported, utilising the LED-based solar simulator. Device characteristics are measured indoors under varying irradiance, temperature and spectrum. A measurement method is detailed and utilised on a crystalline and amorphous silicon solar cell. It allows for the first time a direct investigation of spectral effects on photovoltaic devices under controlled conditions. Results show that amorphous silicon devices are very sensitive to changes in spectrum. Thus, spectral effects should not be neglected in energy yield predictions for such devices.

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Myers, Virginia Stone. "Administrators' ratings of teacher performance and perceptions of ratings on the North Carolina performance appraisal system." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54254.

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The purpose of this study was to examine school administrators' observations, ratings, and perceptions of rating scores on the North Carolina Teacher Performance Appraisal Instrument. The process of evaluating teaching behaviors and reaching agreement on the ratings was also addressed. Attention was directed to three research questions: Do administrators rate teaching performance consistently using the six-point rating scale of the North Carolina Teacher Performance Appraisal Instrument? How do administrators perceive the ratings on the performance appraisal instrument? Do administrators have confidence in their ratings of teaching performance? A teacher evaluation workshop was conducted with building level principals and central office administrators in a small school system in North Carolina. Administrators viewed videotaped teaching episodes and rated five observable teaching behaviors included on the North Carolina Teacher Performance Appraisal Instrument. Individual and group consensus ratings were made. Participants were interviewed following the workshop to record perceptions of the ratings and the evaluation process. Findings in this study revealed that administrators rated within an acceptable limit for the five observable teaching behaviors. There was closer agreement on the teaching behaviors which were rated below standard than on those rated satisfactory and above. Differences in the perceptions of what a particular rating means were evident. Discriminating among the four ratings which were at Standard or higher was more difficult than deciding if a teaching behavior was acceptable or unacceptable. Administrators willingly changed ratings to reach agreement with other raters, indicating little confidence in their own ratings.
Ed. D.

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Alayli, Berna. "Land Use Optimization For Improved Transportation System Performance, Case Study:ankara." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12608186/index.pdf.

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This thesis investigates the effects of urban land use on transportation system performance in terms of various land use factors such as density, mixed or single land use, jobs-housing balance, street patterns, transit accessibility. Reviewed studies show that urban land use has considerable effects on transportation system performance measures which are average travel distances per person, level of service, air quality, gasoline consumption etc. Based on the obtained results, it is concluded that one of the basic reasons behind increasing auto dependency and outcoming problems in recent years is lack of coordination between land use and transportation system. The obtained results are used to analyze land use impacts on transportation system of Ankara. Urban transportation planning decisions, deficiencies in implementation and resulted problems are discussed in terms of land use and transportation interaction. Possible land use regulations which can contribute to relieve transportation problems of Ankara are proposed.

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venkesh, kandari. "Implementation and Performance Optimization of WebRTC Based Remote Collaboration System." Thesis, Blekinge Tekniska Högskola, Institutionen för kommunikationssystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-12891.

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Chan, Suk-yin Irene, and 陳淑賢. "Performance appraisal system in the Hong Kong correctional services." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B31967127.

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徐文良 and Man-leung Chui. "To what extent does FSD department's performance appraisal system reduce information asymmetry between principals and agents." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41013906.

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Menemene, Nonkosi Arnoria. "An evaluation of the performance management and development system at the Department of Safety and Liaison in the Eastern Cape." Thesis, Nelson Mandela Metropolitan University, 2015. http://hdl.handle.net/10948/9875.

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The performance management and development system (PMDS) is a tool that is used by government to measure the performance of individuals in the organisation. PMDS was developmental in its nature in identifying the development of employees and training in case of poor performance. The main aim of the PMDS is to motivate officials in the organisation by rewarding a performance bonus at the end of the financial year. There are challenges that affect the PMDS: officials felt that the system did not motivate them; it is perceived as a 14th cheque and some of them felt the system should be terminated. The main aim of the study is to evaluate the performance management and development system at the Department of Safety and Liaison in the Eastern Cape. Quantitative and qualitative data was collected through questionnaires and interviews. Questionnaires were distributed to officials from levels 1 - 8 and interviews were conducted with assistant managers, managers and senior managers. Descriptive statistics were used to analyse the questionnaires and transcriptions were used to interpret the interviews. The results of the study reflect that most officials in the Department are young and new to the public service. The findings show that the employees of the Department are average in their performance and the Department perceives that the PMDS is not used to identify poor performance and training. The system is not implemented effectively and efficiently. Based on the findings and recommendations made to management to facilitate the training on PMDS and also to allow the processes and procedures to be more efficient. Furthermore allowing performance from all staff to achieve the core objectives of the department.

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Wright, Robert Phillip. "Cognitions of performance appraisal system effectiveness : a repertory grid approach /." Thesis, Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22582204.

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Dingwayo, Mzimkulu Sydney. "An evaluation of a performance management and development system with reference to the Department of the Premier, Provincial Government Western Cape." Thesis, Nelson Mandela Metropolitan University, 2006. http://hdl.handle.net/10948/495.

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We are living in a changing world. Performance management is becoming a major challenge for organisations. The aim of this study is to review the current status of the Performance Management and Development System at the Department of the Premier and to look into the reasons why it has become a pain rather than a gain to both the organisation and its employees. This document will also look at the possible causes of the failure of the performance management system and will then propose useful guidelines to overcome obstacles to the benefit of all the affected parties. To achieve this objective a comprehensive literature study was performed to the Department of the Premier to determine the views on performance, and on performance management programmes. The study also included an investigation into the extent to which a performance management programme should be aligned with Provincial Government Western Cape (PGWC) and individual goals. Questionnaires developed from the literature study, were distributed amongst randomly selected respondents, in order to determine the extent to which a specific directorate manages performance, in line with the guidelines provided by the literature study. The information obtained from the questionnaires were compared with the guidelines provided by the literature study in order to identify shortcomings in the influence that the performance management programme has on the achievement of Department and individual goals at the selected Directorates. The objective of this study was to evaluate the influence of the current performance management system, in the Department at Provincial Government Western Cape, as a facilitation tool in aiding or assisting management in achieving individual and departmental goals. To achieve this objective a comprehensive literature study was performed to determine the views on performance, and on performance management systems. A questionnaire was designed based on the guidelines in the literature study, in order to establish the extent to which the organisation manages performance. The completed questionnaires were returned and these were processed and analysed using Microsoft Office Excel 2003, running on the Windows XP suite of computer packages. The respondent’s opinion obtained from the questionnaires were compared with the guidelines provided by the literature study in order to identify shortcomings of the influence that the performance management system has on the achievement of individual and departmental goals at the selected organization. The research results indicate that the majority of staff supports and understands the process.

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Chauke, Malose William. "The impact of the performance management system (PMS) on service delivery in Mokopane Reginal Hospital Limpopo Province." Thesis, University of Limpopo (Turfloop Campus), 2009. http://hdl.handle.net/10386/895.

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Thesis (MPA.) --University of Limpopo, 2009
The study investigated the impacts of performance management system on service delivery in Mokopane Regional hospital. The study moved from the premise that Performance Management System in Mokopane Regional Hospitals is not well managed. The investigation however revealed that efforts are being made to implement performance management system although some essential improvements are inevitable required. It also probed the implementation of the performance management system within the ambit of the determined policies and procedure manual for the hospital. The challenges experienced are due to the failure of the line managers and supervisors in understanding the essence of the system. The implementation of the system often results in biasness and other performance unrelated factors. In many instances, other factors (such as subjectivity at the expense of objectivity) are unrelated to high performance rates. The study makes a recommendation on how alignment can be made to ensure that the system become more effective.

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Milani, Neil Patrick. "PERFORMANCE OPTIMIZATION OF A HYBRID WIND TURBINE-DIESEL MICROGRID POWER SYSTEM." NCSU, 2006. http://www.lib.ncsu.edu/theses/available/etd-11062006-173005/.

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Nearly all off-grid, remote cold-weather facilities utilize diesel-only systems for both thermal and electrical power generation. In areas of minimal to moderate wind resources, these facilities could substantially decrease diesel fuel usage and could additionally provide for thermal energy production via the integration of a wind turbine system combined with resistance heating into the facility. Voltage and frequency grid stabilization could be obtained by using the diesel electrical generating unit as a synchronous condenser and by using incremental resistive load control, respectively. For systems following medium to high wind penetration guidelines, control components are required but no energy storage mechanisms are needed. This thesis investigates a High-Penetration, No Storage Wind Diesel (HPNSWD) system that can utilize available wind resources to minimize diesel fuel costs for the Scott Base facility ? all without implementing expensive and maintenance-intensive energy storage devices.

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Botha, Johannes Jacobus. "An assessment of the performance appraisal system applied for the junior management level at the cold chain." Thesis, Nelson Mandela Metropolitan University, 2007. http://hdl.handle.net/10948/796.

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The study aims to identify which performance appraisal system is currently used in The Cold Chain, how this system compare with the fundamental requirements of a successful appraisal system and what requirements can be adopted to make the way in which Team Leaders are appraised more effective. An introduction into The Cold Chain, the identification of the problem and the relevance of the study is followed by a literature overview of performance management, the role of performance appraisals and the requirements for a successful performance appraisal system. Various appraisal systems, problems associated with performance appraisals and a framework for the development of an efficient system is discussed. Research conducted using a questionnaire sent to Team Leaders in The Cold Chain, delivered results which were analysed and discussed in Chapter four. In addition to biographical information, the function, effectiveness, evaluator involvement, objectives and criteria, requirements for performance appraisals, organisational alignment and evaluator faults were discussed. It was found that the current performance appraisal system in use at Mercor is a trait scale system. A trait scale method of performance appraisals does not reflect measurement against clearly defined job criteria and is difficult to legally defend. The essential elements for successful appraisal systems such as reliability, relevance, sensitivity, uncontaminated information, acceptability, practicality and legality will be present in a 360-degree approach and the implementation of such a system in Mecor was recommended.

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Aull, Mark J. "Airborne Wind Energy System Analysis and Design Optimization." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1592168644639446.

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Feyzmahdavian, Hamid Reza. "Performance Analysis of Positive Systems and Optimization Algorithms with Time-delays." Doctoral thesis, KTH, Reglerteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-177651.

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Time-delay dynamical systems are used to model many real-world engineering systems, where the future evolution of a system depends not only on current states but also on the history of states. For this reason, the study of stability and control of time-delay systems is of theoretical and practical importance. In this thesis, we develop several stability analysis frameworks for dynamical systems in the presence of communication and computation time-delays, and apply our results to different challenging engineering problems. The thesis first considers delay-independent stability of positive monotone systems. We show that the asymptotic stability of positive monotone systems whose vector fields are homogeneous is independent of the magnitude and variation of time-varying delays. We present explicit expressions that allow us to give explicit estimates of the decay rate for various classes of time-varying delays. For positive linear systems, we demonstrate that the best decay rate that our results guarantee can be found via convex optimization. We also derive a set of necessary and sufficient conditions for asymptotic stability of general positive monotone (not necessarily homogeneous) systems with time-delays. As an application of our theoretical results, we discuss delay-independent stability of continuous-time power control algorithms in wireless networks. The thesis continues by studying the convergence of asynchronous fixed-point iterations involving maximum norm pseudo-contractions. We present a powerful approach for characterizing the rate of convergence of totally asynchronous iterations, where both the update intervals and communication delays may grow unbounded. When specialized to partially asynchronous iterations (where the update intervals and communication delays have a fixed upper bound), or to particular classes of unbounded delays and update intervals, our approach allows to quantify how the degree of asynchronism affects the convergence rate. In addition, we use our results to analyze the impact of asynchrony on the convergence rate of discrete-time power control algorithms in wireless networks. The thesis finally proposes an asynchronous parallel algorithm that exploits multiple processors to solve regularized stochastic optimization problems with smooth loss functions. The algorithm allows the processors to work at different rates, perform computations independently of each other, and update global decision variables using out-of-date gradients. We characterize the iteration complexity and the convergence rate of the proposed algorithm, and show that these compare favourably with the state of the art. Furthermore, we demonstrate that the impact of asynchrony on the convergence rate of the algorithm is asymptotically negligible, and a near-linear speedup in the number of processors can be expected.
Tidsfördröjningar uppstår ofta i tekniska system: det tar tid för två ämnen attblandas, det tar tid för en vätska att rinna från ett kärl till ett annat, och det tar tid att överföra information mellan delsystem. Dessa tidsfördröjningar lederofta till försämrad systemprestanda och ibland även till instabilitet. Det är därförviktigt att utveckla teori och ingenjörsmetodik som gör det möjligt att bedöma hur tidsfördröjningar påverkar dynamiska system. I den här avhandlingen presenteras flera bidrag till detta forskningsområde. Fokusligger på att karaktärisera hur tidsfördröjningar påverkar konvergenshastigheten hos olinjära dynamiska system. I kapitel 3 och 4 behandlar vi olinjära system varstillstånd alltid är positiva. Vi visar att stabiliteten av dessa positiva system är oberoende av tidsfördröjningar och karaktäriserar hur konvergenshastigheten hos olinjära positiva system beror på tidsfördröjningarnas storlek. I kapitel 5 betraktar vi iterationer som är kontraktionsavbildningar, och analyserar hur deras konvergens påverkas av begränsade och obegränsade tidsfördröjningar. I avhandlingens sistakapitel föreslår vi en asynkron algoritm för stokastisk optimering vars asymptotiska konvergenshastighet är oberoende av tidsfördröjningar i beräkningar och i kommunikation mellan beräkningselement.

QC 20151204

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Endo, Fumihiro, Masaki Kanamitsu, Ryo Shiomi, Hiroki Kojima, Naoki Hayakawa, and Hitoshi Okubo. "Optimization of Asset Management and Power System Operation Based on Equipment Performance." IEEE, 2008. http://hdl.handle.net/2237/11798.

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Xu, Weili. "An Energy and Cost Performance Optimization Platform for Commercial Building System Design." Research Showcase @ CMU, 2017. http://repository.cmu.edu/dissertations/956.

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Energy and cost performance optimization for commercial building system design is growing in popularity, but it is often criticized for its time consuming process. Moreover, the current process lacks integration, which not only affects time performance, but also investors’ confidence in the predicted performance of the generated design. Such barriers keep building owners and design teams from embracing life cycle cost consideration. This thesis proposes a computationally efficient design optimization platform to improve the time performance and to streamline the workflow in an integrated multi-objective building system design optimization process. First, building system cost estimation is typically completed through a building information model based quantity take-off process, which does not provide sufficient design decision support features in the design process. To remedy this issue, an automatic cost estimation framework that integrates EnergyPlus with an external database to perform building systems’ capital and operation costs is proposed. Optimization, typically used for building system design selection, requires a large amount of computational time. The optimization process evaluates building envelope, electrical and HVAC systems in an integrated system not only to explore the cost-saving potential from a single high performance system, but also the interrelated effects among different systems. An innovative optimization strategy that integrates machine learning techniques with a conventional evolutionary algorithm is proposed. This strategy can reduce run time and improve the quality of the solutions. Lastly, developing baseline energy models typically takes days or weeks depending on the scale of the design. An automated system for generating baseline energy model according to ANSI/ASHRAE/IESNA Standard 90.1 performance rating method is thus proposed to provide a quick appraisal of optimal designs in comparison with the baseline energy requirements. The main contribution of this thesis is the development of a new design optimization platform to expedite the conventional decision making process. The platform integrates three systems: (1) cost estimation, (2) optimization and (3) benchmark comparison for minimizing the first cost and energy operation costs. This allows designers to confidently select an optimal design with high performance building systems by making a comparison with the minimum energy baseline set by standards in the building industry. Two commercial buildings are selected as case studies to demonstrate the effectiveness of this platform. One building is the Center for Sustainable Landscapes in Pittsburgh, PA. This case study is used as a new construction project. With 54 million possible design solutions, the platform is able to identify optimal designs in four hours. Some of the design solutions not only save the operation costs by up to 23% compared to the ASHRAE baseline design, but also reduce the capital cost ranging from 5% to 23%. Also, compared with the ASHRAE baseline design, one design solution demonstrates that the high investment of a product, building integrative photovoltaic (BiPV) system, can be justified through the integrative design optimization approach by the lower operation costs (20%) as well as the lower capital cost (12%). The second building is the One Montgomery Plaza, a large office building in Norristown, PA. This case study focuses on using the platform for a retrofit project. The calibrated energy model requires one hour to complete the simulation. There are 4000 possible design solutions proposed and the platform is able to find the optimal design solution in around 50 hours. Similarly, the results indicate that up to 25% capital cost can be saved with $1.7 million less operation costs in 25 years, compare to the ASHRAE baseline design.

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Guner, Bilgi. "Performance appraisal system in Filiz Gida." CSUSB ScholarWorks, 2003. https://scholarworks.lib.csusb.edu/etd-project/2399.

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This thesis focuses on evaluating the performance appraisal system of Filiz Gida, a small food processing company that is located in Turkey. Filiz Gida was established by Dogus Holding in Bolu, and currently employs 284 individuals. Filiz Gida is dedicated to fair and respectful treatment of all workers, offering voluntary benefits in housing programs, health care, education for worker's children, and professional child care services. The importance of quality in production at Filiz Gida is reflected by its receipt of ISO 9002 certification in 1994. In 2003 the Barilla Group, which is one of the giants in the pasta business, acquired Filiz Gida due to financial interests that have not been well documented by public media.

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Liu, Pak-lin, and 廖柏年. "An evaluative study of the performance appraisal system in government secondary schools." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31959027.

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Vigaro, Magdelane Rosaline. "An effective performance management system for a selected company in the construction industry." Thesis, Cape Peninsula University of Technology, 2013. http://hdl.handle.net/20.500.11838/1730.

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Thesis submitted in partial fulfilment of the requirements for the degree Master of Technology: Human Resource Management In The Faculty of Business At The Cape Peninsula University of Technology 2013
This paper aims to determine if there is a relationship between performance management and organisational performance owing to a lack of staff motivation. If there is such a relationship the paper aims to investigate implementation of performance management for a selected company in the construction industry. The paper begins by outlining the background and history of the construction industry and presents a review of literature of performance management which provides insight into the topic. The paper examined different views of performance management from both practitioners and organisations and discusses the aims, benefits and shortcomings of performance management. Additionally, different evaluation methods and performance measurement methods were investigated to provide an in-depth understanding of the topic. The background and overview of the selected company in the construction industry was discussed. The paper used a case study and qualitative research approach. The results of the research prove that there is an inverse relationship between performance management and the lack of motivation that affects organisational performance. The paper concludes by showing that the selected company is in need of a performance management system and suggesting the development of a performance management system that should support a culture, which is based on feedback and communication. A framework is presented which ensures that effective strategies are deployed to adopt a performance management system.

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Kwok, Nga-man, and 郭雅文. "Academic staff's perceptions of implementing performance-based review system in a tertiary institution : a case study." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/198860.

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Introducing a new performance-based review with 100% support from staff in a well-established university is difficult for the university management. Apart from measuring whether regulations have been followed or not, acceptance of academic staff is one key area that educational organizations should not ignore when evaluating effectiveness of a performance-based policy. Using the case university as an example, this study aims at investigating academic staff’s perceptions of gradually introducing an array of performance-based review policies, its design and its success in enhancing quality. By conducting in-depth interviews with eight academic staff in the case university, suggestions to improve the performance-based review policy have also been collected. Findings showed that academic staff basically supported its implementation and believed that it could bring positive impacts to the case university. Major areas of concerns of academic staff, which included assessment criteria, focus of university development, flexibility, reviewer composition and motivation, could be considered by peer universities when designing their own performance-based review policies and promote their policy effectiveness.
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Tini, Linda Lindelwa. "Evaluating the effectiveness of the performance management and development system in the Eastern Cape Liquor Board." Thesis, Nelson Mandela Metropolitan University, 2014. http://hdl.handle.net/10948/d1021216.

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Research studies have reported that many organisations implement a performance management and development system. However, it is often not as effective as it is intended. Against this background, the purpose of this study was to evaluate the effectiveness of the performance management and development in the Eastern Cape Liquor Board (ECLB). The study emphasised the importance of an organisational culture that supports management of performance in order for the system to be effective. The study further highlighted that alignment between the performance of individuals and the organisation is critical as all efforts have to focus on the achievement of the organisational vision. The study also emphasised the importance of a process of determining key performance areas that is transparent and involves participation by all employees. The study further argued that the development and rewarding of employees for performance is crucial in ensuring an effective performance management system. The target population for this study consisted of ECLB employees including the district offices. The findings suggested that when the performance management and development system is not implemented in its entirety it cannot be effective. Furthermore, the findings revealed that ECLB implements some of the elements of the system correctly whilst other areas still require more attention.

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Mkovane, Zenephone Bhekuyise. "Critical analysis of a performance management system used by a tertiary education institution in the Eastern Cape." Thesis, Nelson Mandela Metropolitan University, 2005. http://hdl.handle.net/10948/412.

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As argued by authors like Franzen on whose work the greater part of the introduction, the main problem and sub-problem has been based, the objective of this study was to establish the extent to which the performance evaluation system currently in use at the subject Institution conforms to the benchmark performance management systems as espoused in literature. Further, the objective was to establish the differences and commonalities between the performance management systems practiced in the corporate sector and current practice at the subject Institution. Best practice was thus lifted to form part of the recommendation of this study. A questionaire was designed based on the guidelines in the literature study in order to determine how the subject Institution conducts its performance appraisal and how this relates to the four general purposes of performance management mentioned in the study. The respondents' opinion obtained from the questionaire were compared with the guidelines in literature and clustered around the four identifiable general purposes of performance management. The study concludes with a statement of current practice at the subject Institution, and outlines the extent of conformance to benchmark practice on performance management systems. Recommendations are made based on best practice and direction is given to future research into contemporary practices with the express aim of enhancing quality in higher education applying the quality-related procedures of industry and commerce, where quality is crucial to success (Winch, 1996: 9-13). The current performance management system at the subject Institution proves to be largely conforming to the benchmark. However it should require comments made by the respondents that pertain to improvement.

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Terblanche, Graham Martin. "An assessment of the performance appraisal system utilised for junior and middle level management within the South African National Defence Force." Thesis, Port Elizabeth Technikon, 2004. http://hdl.handle.net/10948/148.

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The research problem of this study was to assess the extent to which the appraisal system for junior and middle level managers in the South African National Defence Force (SANDF) met the requirements and guidelines for performance appraisal as stipulated in the literature. To achieve this objective, the following procedure was followed: · A survey of existing literature, related to performance appraisal, was conducted. The literature study focused on the requirements for an effective performance appraisal system, appraisal methods and appraisal errors. Attention was also focused on who should take responsibility for performance appraisal and the importance of regularly evaluating the performance appraisal system to meet the demands of a changing environment. The second part of the literature study dealt with the guidelines for establishing an effective appraisal system as well as performance management processes and cycles that are critical for the effectiveness of an appraisal system. The theoretical study formed the basis for the development of a survey questionnaire to establish the extent to which junior and middle level managers in the SANDF agreed with the theoretical guidelines. The survey was administered to a randomly selected group of junior and middle level managers who were representative of the South African Army, Airforce and Medical Services. The empirical results indicated that there was concurrence with many of the guidelines in the literature, but that there were areas that could be improved. It became evident that many respondents felt that the current system was not entirely fair and was not adapted to meet the needs of the integrated SANDF. Specifically, results indicated that the system should be re-evaluated to eliminate bias and to enhance the development of clear standards, both on a quantitative and qualitative level. It became clear that training and communication were important to the successful development and utilisation of a performance appraisal system. An effective performance appraisal system that is integrated with the overall performance management system of an organisation will enhance productivity, satisfaction and the attainment of goals.

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Saki, Nomachule Theodor. "Analysis of the performance management system in the detective service of the Motherwell cluster in Port Elizabeth." Thesis, Nelson Mandela Metropolitan University, 2014. http://hdl.handle.net/10948/d1020582.

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Performance management was implemented in the public service, including the South African Police Service, in 2001. The aim of implementing performance management in the public service was to improve the performance of all public servants. It was envisaged that the initiative for implementing performance management in the public service would entrench a culture of accountability, leading to improved service delivery. The effective utilisation of performance agreements, as a tool to align individual and organisational performance in the Motherwell Cluster Detective Service, was considered in this research. The contents of the individual detectives’ performance agreements and job descriptions in the Motherwell Cluster were analysed and compared with the contents of the SAPS Detective Service strategic objectives and performance indicators, as reflected in the SAPS Annual Performance Plan for 2012/2013. Interviews were conducted with Detective Service employees in the Motherwell Cluster, to determine whether the employees received training on the implementation of the Performance Enhancement Process, as the SAPS Performance Management and Development System. Research findings revealed that the contents of the respective individual detectives’ performance agreements and job descriptions were not aligned to the contents of the SAPS Detective Service strategic objectives and performance indicators. In areas where alignment was found, such alignment was so minimal that there was no meaningful correlation between an individual detective’s performance and organisational performance. The suggested recommendations are based on the findings of this study, which should be taken seriously if there is a desire to improve service delivery by the Detective Service. Apprehension, conviction, and sentencing of an offender can cause potential offenders to refrain from committing criminal acts for fear of apprehension and punishment.

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Boyle, Patrick. "Energy Performance Simulation of Different Ventilation Systems in Sweden and Corresponding Compliance in the LEED Residential Rating System." Thesis, Högskolan Dalarna, Energiteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:du-34516.

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The importance of energy efficiency in the operation of the built environment is becoming increasingly important. Energy use in the building sector has exceeded both transportation and industry, while within buildings heating, ventilation, and air conditioning has the greatest share. In light of the recent pandemic forcing governments to issue quarantines and stay-at-home orders people are spending even more time indoors, this further emphasizes the importance of proper ventilation and the impacts on energy use. The purpose of this research was to perform a case study of a low environmental impact demonstration house to compare the energy performance of various ventilation strategies. The ventilation strategies varied by overall airflow rate, control strategy, and the presence of heat recovery. Performance was evaluated by establishing a model in IDA ICE, an equation-based modeling tool for the simulation of indoor thermal climate and energy use. The results showed energy savings due to demand-control with a reduction of 12.5%. Results also showed similar savings with a heat recovery system, indicating that any savings in heat loss due to heat recovery is at the expense of increased auxiliary energy. In this particular case, the benefit of upgrading to a heat recovery system from simple demand control set up is not readily apparent. Results also demonstrated trends and possible complications useful to future research plans that aim to measure real world ventilation performance, including how differences in the number and location of sensors impact the efficacy of the demand-controlled systems. A secondary aim was to observe how a newly constructed, low environmental impact home built in Sweden performs according the residential LEED energy budget. The results demonstrated that constructing a house using low impact materials with low embodied energy does not have to negatively impact energy performance, scoring extremely well in the Energy and Atmosphere category of a widely used sustainable building rating system.

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Nyembezi, Vuyo. "Development of a performance management system for the SABC (Port Elizabeth)." Thesis, Nelson Mandela Metropolitan University, 2009. http://hdl.handle.net/10948/1148.

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This study focused on exploring and finding the ideal performance management system suitable for the South African Broadcasting Corporation by establishing an understanding of employees’ experiences and perceptions of the previous and a proposed performance management systems and their value to SABC employees. This was done by eliciting how employees see, make sense of and interpret their everyday experiences of performance management systems, in order to develop a more suitable inclusive performance management system. A qualitative study was used to seek answers to the research questions. A focus group interview was selected for data collection. The data was analysed according to guidelines indicated and proposed by Creswell (1998:147-148). The researcher made use of convenience sampling to select 45 participants in 5 groups for the focus groups. One group consisted of managers/supervisors, and the other four groups were employees from four different business units. Participants were guaranteed confidentiality. Credibility, transferability, dependability and conformability were used as the main components in the model, to determine the truth-value of the study. Findings indicated that there was a fair understanding of the previous performance management system but there had been poor implementation of the system. The participants concurred that the previous performance iv management systems in the organisations were not adding any value to their lives. They pointed out that there was no reward in place for high performers and no action taken for non-performers, and this impacted negatively on how implementation was perceived and experienced. The recommendations are that the revised performance management system should have a stronger emphasis on effective management, monitoring, feedback and reward. Furthermore, the system should close the current gaps of reward for high performance and correction of low performance. It was further concluded that for a performance management system to be effective, it should incorporate updated job descriptions, performance measures and standards, as well as evaluator training and guidelines for improvement, employee input, compensation and/or rewards.

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Sunki, Supriya. "Performance optimization in three-dimensional programmable logic arrays (PLAs)." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001255.

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Chan, Yuk-ying Gloria, and 陳玉英. "A study on appraisers' and appraisees' perception to performance appraisal system." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31268614.

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Djuric, Natasa. "Real-time supervision of building HVAC system performance." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-2215.

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This thesis presents techniques for improving building HVAC system performance in existing buildings generated using simulation-based tools and real data. Therefore, one of the aims has been to research the needs and possibilities to assess and improve building HVAC system performance. In addition, this thesis aims at an advanced utilization of building energy management system (BEMS) and the provision of useful information to building operators using simulation tools.

Buildings are becoming more complex systems with many elements, while BEMS provide many data about the building systems. There are, however, many faults and issues in building performance, but there are legislative and cost-benefit forces induced by energy savings. Therefore, both BEMS and the computer-based tools have to be utilized more efficiently to improve building performance.

The thesis consists of four main parts that can be read separately. The first part explains the term commissioning and the commissioning tool work principal based on literature reviews. The second part presents practical experiences and issues introduced through the work on this study. The third part deals with the computer-based tools application in design and operation. This part is divided into two chapters. The first deals with improvement in the design, and the second deals with the improvement in the control strategies. The last part of the thesis gives several rules for fault diagnosis developed using simulation tools. In addition, this part aims at the practical explanation of the faults in the building HVAC systems.

The practical background for the thesis was obtained though two surveys. The first survey was carried out with the aim to find the commissioning targets in Norwegian building facilities. In that way, an overview of the most typical buildings, HVAC equipment, and their related problems was obtained. An on-site survey was carried out on an example building, which was beneficial for introducing the building maintenance structure and the real hydronic heating system faults.

Coupled simulation and optimization programs (EnergyPlus and GenOpt) were utilized for improving the building performances. These tools were used for improving the design and the control strategies in the HVAC systems. Buildings with a hydronic heating system were analyzed for the purpose of improving the design. Since there are issues in using the optimization tool, GenOpt, a few procedures for different practical problems have been suggested. The optimization results show that the choice of the optimization functions influences significantly the design parameters for the hydronic heating system.

Since building construction and equipment characteristics are changing over time, there is a need to find new control strategies which can meet the actual building demand. This problem has been also elaborated on by using EnergyPlus and GenOpt. The control strategies in two different HVAC systems were analyzed, including the hydronic heating system and the ventilation system with the recovery wheel. The developed approach for the strategy optimization includes: involving the optimization variables and the objective function and developing information flow for handling the optimization process.

The real data obtained from BEMS and the additional measurements have been utilized to explain faults in the hydronic heating system. To couple real data and the simple heat balance model, the procedure for the model calibration by use of an optimization algorithm has been developed. Using this model, three operating faults in the hydronic heating system have been elaborated.

Using the simulation tools EnergyPlus and TRNSYS, several fault detection and diagnosis (FDD) rules have been generated. The FDD rules were established in three steps: testing different faults, calculating the performance indices (PI), and classifying the observed PIs. These rules have been established for the air cooling system and the hydronic heating system. The rules can diagnose the control and the component faults. Finally, analyzing the causes and the effects of the tested faults, useful information for the building maintenance has been descriptively explained.

The most important conclusions are related to a practical connection of the real data and simulation-based tools. For a complete understanding of system faults, it is necessary to provide real-life information. Even though BEMS provides many building data, it was proven that BEMS is not completely utilized. Therefore, the control strategies can always be improved and tuned to the actual building demands using the simulation and optimization tools. It was proven that many different FDD rules for HVAC systems can be generated using the simulation tools. Therefore, these FDD rules can be used as manual instructions for the building operators or as a framework for the automated FDD algorithms.

Denne avhandlingen presenterer noen fremgangsmåter for forbedring av ytelser for VVS-tekniske anlegg i eksisterende bygninger basert på bruk av simuleringsverktøy og virkelige måledata. Ett av målene har vært å undersøke behov og muligheter for vurdering og forbedring av ytelser for VVS-anlegg i bygninger. I tillegg har denne avhandlingen hatt som mål å fremme bruk av SD-anlegg samt å fremskaffe nyttig informasjon til driftspersonalet.

Bygninger blir stadig mer kompliserte systemer som inneholder flere og flere komponenter mens SD-anlegg håndterer en stadig større mengde data fra bygningsinstallasjoner. På den ene siden registreres det ofte feil og problemer med hensyn til ytelsene til de VVS-tekniske installasjonene. På den andre siden innføres det stadig strengere lovmessige pålegg og kost-nyttekrav motivert i energieffektiviseringen. SD-anlegg og databaserte verktøy bør derfor brukes mer effektivt for forbedring av ytelsene.

Avhandlingen består av fire hoveddeler hvor hver del kan leses separat. Den første delen, som er basert på literatturstudie, forklarer funksjonskontroll som begrep og prinsipper for oppbygging av verktøy for funksjonskontroll. Den andre delen presenterer praktisk erfaring og problemstillinger utviklet og behandlet i løpet av arbeidet med avhandlingen. Den tredje delen handler om anvendelse av databaserte verktøy for forbedring av ytelsen for VVS-tekniske installasjoner. Den tredje delen er delt opp i to kapitler, hvorav et handler om forbedring av systemløsninger og et om forbedring av styringsstrategier. Den siste delen presenterer flere regler for feilsøking og diagnostisering utviklet gjennom bruk av simuleringsverktøy. I tillegg gir denne delen en praktisk forklaring av feilene i de VVS-anleggene som er behandlet i undersøkelsen.

Det praktiske grunnlaget for avhandlingen er etablert gjennom to undersøkelser. Den første var en spørreundersøkelse som hadde til hensikt å kartlegge målsetninger for funksjonskontroll i norske bygninger. Gjennom dette ble det etablert en oversikt over de mest typiske bygninger med tilhørende VVS-anlegg og de mest forekommende problemene. En dypere undersøkelse ble utført på ett casebygg. Denne undersøkelsen viste seg å være nyttig både for kartlegging av betydningen av organisering av driften av bygningen og for avdekking av de virkelige feilene i det vannbårne oppvarmingssystemet.

En kobling mellom et simulerings- og et optimaliseringsprogram (EnergyPlus og GenOpt) har vært benyttet for forbedring av ytelsene for de VVS-tekniske installasjonene. Disse verktøyene har vært brukt for forbedring av både systemløsningene og styringsstrategiene for VVS-anlegg. Bygninger med vannbåren oppvarmingssystem har vært analysert for å forbedre systemløsningen. På grunn av begrensninger i bruken av optimaliseringsverktøyet GenOpt, har det blitt utviklet egne prosedyrer for håndtering av visse typer problemstillinger hvor denne begrensningen opptrer. Resultatene for optimaliseringen viser at valg av objektfunksjoner påvirker betydelig parametrene i det vannbårne oppvarmingssystemet.

Endringer i egenskapene til både bygningskonstruksjoner og utstyr som skjer på grunn av aldring over tiden, gjør det nødvendig med tilpassning av styringsstrategier slik at det virkelige behovet kan bli dekket. Denne problemstillingen har vært analysert ved bruk av EnergyPlus og GenOpt. Styringsstrategiene for to forskjellige VVS-anlegg, et vannbåret oppvarmingssystem og et ventilasjonsanlegg med varmegjenvinner har blitt behandlet. Den utviklete prosedyren for optimalisering av styringsstrategien består av følgende steg: innføring av optimaliseringsvariabler og objektfunksjon, samt utvikling av informasjonsflyt for behandling av optimaliseringsprosessen.

De virkelige data, både fra SD-anlegg og tilleggsmålinger, har vært benyttet for praktisk forklaring av feilene i oppvarmingssystemet. En prosedyre for modellkalibrering basert på bruk av en optimaliseringsalgoritme som kobler sammen de virkelige data og en enkel varmebalansemodell har blitt foreslått. Tre konkrete driftsfeil i oppvarmingssystemet har blitt belyst gjennom bruk av denne varmebalansemodellen.

Flere regler for feilsøking og diagnostisering har blitt utviklet ved hjelp av simuleringsverktøyene EnergyPlus and TRNSYS. Denne utviklingen har bestått av tre ulike steg: testing av bestemte feil, beregning av ytelsesindikatorer og til slutt klassifisering av de observerte ytelsesindikatorer. Reglene har blitt utviklet for et system av aggregater for luftkjøling og for et vannbåret oppvarmingssystem. Reglene kan diagnostisere både styringsfeil og komponentfeil. Til slutt presenteres informasjon som er nyttig for drift av VVS-tekniske installasjoner i bygninger basert på en analyse av årsakene for og virkningene av de feil som er behandlet.

De viktigste konklusjonene er knyttet til praktisk kombinasjon av virkelige måleverdier og simuleringsverktøy. Informasjon fra det virkelig liv er helt nødvendig for å få en god forståelse av feil som oppstår i anlegg. Det er også vist at potensialet som ligger i alle de data som er tilgjengelige gjennom SD-anlegg, ikke er fullt utnyttet. Gjennom bruk av simuleringsverktøy kan styringsstrategiene alltid bli bedre tilpasset og innjustert til de virkelige behov i bygningen. Simuleringsverktøy kan også brukes for utvikling av prosedyrer for feilsøking og diagnostisering i VVS-tekniske anlegg. Disse prosedyrene kan brukes enten som en veileder for manuell feilsøking og detektering eller som grunnlag for utvikling av automatiserte algoritmer.

Paper II, VI and VII are reprinted with kind permission from Elsevier, sciencedirect.com

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Maphakela, Madimetja Francina Flora. "An evaluative study of the performance management system in the South African Police Service, Capricorn area in the Limpopo Province." Thesis, University of Limpopo (Turfloop Campus), 2006. http://hdl.handle.net/10386/823.

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Han, Song. "Retrofitting CHP Plant and Optimization of Regional Energy System." Licentiate thesis, Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-13185.

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The use of biomass-based combined heat and power (CHP) plants is considered by the EU administration to be an effective way to increase the use of renewables in the energy system, to reduce greenhouse gas emissions and to alleviate the dependency on imported fossil fuels. At present in Sweden, most of the CHP plants are operated in part-load mode because of variations in heat demand. Further use of the potential heat capacity from CHP plants is an opportunity for integration with other heat-demanding processes. Retrofitting the conventional CHP plants by integration with bioethanol and pellet production processes is considered a feasible and efficient way to improve the plants’ performances. Modeling and simulation of the CHP plant integrated with feedstock upgrading, bioethanol production and pellet production is performed to analyze the technical and economic feasibility. When integrating with bioethanol production, the exhaust flue gas from the CHP plant is used to dry the hydrolysis solid residues (HSR) instead of direct condensation in the flue gas condenser (FGC). This drying process not only increases the overall energy efficiency (OEE) of the CHP plant but also increases the power output relative to the system using only a FGC. Furthermore, if steam is extracted from the turbine of the CHP plant and if it is used to dry the HSR together with the exhaust flue gas, pellets can be produced and the bioethanol production costs can be reduced by 30% compared with ethanol cogeneration plants. Three optional pellet production processes integrated with an existing biomass-based CHP plant using different raw materials are studied to determine their annual performance. The option of pellet production integrated with the existing CHP plant using exhaust flue gas and superheated steam for drying allows for a low specific pellet production cost, short payback time and significant CO2 reduction. A common advantage of the three options is a dramatic increase in the total annual power production and a significant CO2 reduction, in spite of a decrease in power efficiency. The retrofitted biomass-based CHP plants play a crucial role in the present and future regional energy system. The total costs are minimized for the studied energy system by using wastes as energy sources. Analyses of scenarios for the coming decades are performed to describe how to achieve a regional fossil fuel-free energy system. It is possible to achieve the target by upgrading and retrofitting the present energy plants and constructing new ones. The conditions and obstacles have also been presented and discussed through optimizing the locations for proposed new energy plants and planting energy crops.
REMOWE, CSC

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Al-Raisi, A. A. N. "E-performance assessment system in governmental organizations in the United Arab Emirates." Thesis, Coventry University, 2011. http://curve.coventry.ac.uk/open/items/037d44df-9c0f-478b-aa99-ced82ec23a0d/1.

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This research examines the introduction of e-performance assessment systems in governmental organizations in the United Arab Emirates. The research also examines the influence of cultural forces in accepting the implementation of technology systems that deal with assessment and evaluation of government employees to facilitate the transitional process from manual to e-performance assessment. The methodology used in this research can be described as follows: first a descriptive method to explain the main management theories underlying employee e-performance, followed by an illustration of the concept of electronic tools, based on what has been written in the relevant literature, then conducting a pilot study. A pilot study was made to reduce uncertainty in survey questions, increase clarity, enhance questionnaire validity, and expand on factors that might affect data analysis, improve research design, and confirm the feasibility of this research study. The conceptual model of this study is determined on the based of literature analysis, the pilot study, and the empirical collection of data. A model for a performance appraisal assessment system is proposed, which shows a statistical significance between performance management, e-performance management, performance assessment, e-performance assessment, and performance standards with both perceived usefulness and perceived ease of use. This study finds that there are numerous factors shapes ethics and norms at the workplace. This study suggests that the United Arab Emirates enjoys highly structured governmental organizations. This primarily results from the naturally inherited characteristics of being a high-context society. The major findings of this research aim to contribute to available literature, as there is currently a distinct shortage of relevant academic work targeting the issue of governmental e-performance systems. Similarly no papers concerning e-performance in a UAE context actually existed prior to this investigation. Therefore, much of the available literature was found to be only semi-relevant.

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Elgayar, Aly. "Integrating Bridge Information Modeling (BRIM), Bridge Sustainability Rating System (BRSRS), Bridge Environmental Performance Strategy Mapping (BREPSM) and Cost Estimating At the Conceptual Design Stage." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36570.

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Bridges are crucial infrastructure for urban development as cities rely heavily on various modes of transportation for access and mobility. In an effort to fill the gap in the knowledge and methodology used in the construction of sustainable bridges, a model is developed using the concept of BrIM having the capabilities to develop bridges at the conceptual design stage, which offers ample versatility to influence stakeholders’ decisions towards sustainable bridge design. The model incorporates a knowledge-based decision support system and four modules namely: BrIM module; the first ever Bridge Sustainability Rating System (BrSRS) module; Bridge Environmental Performance Strategy Map (BrEPSM) module; and a conceptual cost estimating module. The model takes fundamental data input and processes it through the knowledge-based system established based on MTO’s Highway Geometric Design and the Navigational Waterways Clearance guidelines. The sustainability capabilities of the model are broken into two sub- modules; a BrSRS was developed by using the amalgamation of various existent highways and roads sustainability rating systems and by considering the introduction of bridge design. The system mimics the style of LEED as users can select from a weighted list of sustainable construction activities and materials to accumulate credits towards a sustainability classification. The second includes a BrEPSM that the forecasts footprints levels of bridge projects based on 5 footprint indicators namely; carbon; water; energy; emissions; and work environment with data obtained from Statistics Canada pertaining to each footprint illustrated on a radar graph. The third module takes the knowledge-based output and presents it in 3D mode via AutoCAD allowing users to alter the drawing’s dimensions and accordingly the model reiterates the calculations based on the changes made in the 3D CAD model. The final module generates an approximate cost estimate of the conceptually designed bridge, which is ideal for the feasibility study of the project.

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