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

Hierarchical distributed algorithm for optimization of flows and prices in logistics distribution networks /

Brayman, Vladimir. January 2003 (has links)
Thesis (Ph. D.)--University of Washington, 2003. / Vita. Includes bibliographical references (leaves 61-65).
2

Development of Computer Aided Heat Treatment Planning System (CAHTPS)

Vader, Ranjeet D 30 August 2002 (has links)
"The thesis includes fundamental work in the following, · Development of materials database which includes the main parameters of the various heat transfer models · Validation and testing of the system capability and accuracy by means of various case studies A computer aided heat treatment planning system (CAHTPS) is developed to assist the heat treatment process. The temperature distribution inside the furnace and the temperature of the various parts in the load can be determined. The various models for the heat treatment are analyzed and the various parameters in the equations are classified. The majority of the equations parameters were properties of various metals and non metals. Hence an extensive database is developed so as to assist the models. The remaining physical conditions dependent parameters of the models were analyzed and the effects due to change in the conditions and these parameters are tested and studied by various case studies. The change in the loading pattern effects and change in the load quantity effects for the various cases are presented. The thesis work establishes the system’s application scope and the accuracy to be used in the current heat treatment industries."
3

A study to determine the influence exerted by the Indiana Comprehensive Assessment and Program Planning System on the Eighteen basic principles of the Middle School / Eighteen basic principles of the Middle School.

Cooley, Van Edwin January 1982 (has links)
The purpose of the study was to determine which of the Eighteen Basic Middle School Principles were influenced by the Indiana Comprehensive Assessment and Program Planning System (CAPPS) based on perceptions of middle school principals. A second purpose was to determine the extent of influence (positive, negative, no influence) exerted by CAPPS on the Eighteen Basic Middle School Principles.A survey instrument consisting of eighteen items in five Likert-response categories was mailed to: one-hundred randomly selected middle school principals in Indiana. Space was provided for respondents to write a statement describing how CAPPS influenced each middle school principle. Sixty-two middle school principals responded to the survey.Middle school principles most influenced by CAPPS were basic skill repair and extension, and planned gradualism. Principles least influenced were continuous progress programs, intramural activities, social experiences, independent study and auxiliary staffing. Sixty-five percent of responding principals indicated CAPPS exerted no influence on the combined eighteen principles.Conclusions derived from data revealed although CAPPS was not perceived as exerting a major influence, it was seen as positive. CAPPS has influenced textbook, material selection and increased articulation between grade levels. Emphasis on basic skill areas and remediation have increased due to CAPPS.Rationale for the middle school was to meet developmental opmental needs of transescent youth. However, the middle school concept has been implemented for a variety of reasons including dissatisfaction with the junior high school and reorganization of grade, levels to facilitate. desegregation and changing enrollments.Recommendations for further research include assess merit of educators to determine understanding of CAPPS and the middle school concept. Research also needs to be conducted to determine if educators are following CAPPS guidelines.
4

Optimization and information retrieval techniques for complex networks

Boginski, Vladimir L. January 2005 (has links)
Thesis (Ph.D.)--University of Florida, 2005. / Title from title page of source document. Document formatted into pages; contains 112 pages. Includes vita. Includes bibliographical references.
5

Realizace výpočetních úloh na MetaCentru / Realization of demanding computing tasks on MetaCentrum

HORELICA, Josef January 2013 (has links)
This thesis deals with the realization of demanding computing tasks on MetaCentrum. For these purposes was created the manual, which should help beginners on MetaCentrum. The first part is about the basic knowledge about parallel computation, characterization of means for computing, project MetaCentrum and some applications offered by MetaCentrum. In the second part there are the practical examples of computing on MetaCentrum. The enclosed CD contains the multimedia tutorial.
6

Modelling extensive beef cattle production systems for computerised decision support in South Africa

Hill, Hester Elizabeth Johanna 10 February 2009 (has links)
The complicated nature of beef cattle farming necessitated the development of an effective computerised cattle management system (cattle farm planning system). This system was developed and programmed to be a planning and optimising model for maximum profit for the farmer. Farming systems in South Africa differ markedly, and the emerging farmers as well as small-farming communities depend either entirely or partly on agricultural activities for their survival and income generation. The design was mainly focussed on the new group of emerging farmers as well as small-farming communities. Improving the productivity of agriculture has exercised the ingenuity of politicians, planners, researchers, and extension or development agency staff over the last 30 to 40 years (Norman, 1993). For this study the focus was mainly on medium framed cattle (utilised mainly by the emerging farmers). A mathematical model was developed with the use of data from previous researchers, on growth, fertility, mating and calving percentages and data on the dressing percentages, average producer prices as well as other expenses. Growth curves for animals with three different condition score’s was used in conjunction with the expected meat prices and dressing percentages to calculate expected market prices on the hoof. Sales and marketing costs could be viewed on screen in order to show the farmer his profit margin. Using the information in the tables the system also determined the running costs for all cattle on the specific farm. The output of the program worked as follow. First, the marketing strategy was displayed. For each season the number of cattle recommended for sale was graphically displayed, together with the corresponding gross and net income. The user could also select the marketing strategy for a cattle group for the coming two years in each of eight seasons. The herd composition can also be displayed with financial information. The system was developed in order to give the farmer valuable information to help with the management of the farm. / Dissertation (MSc(Agric))--University of Pretoria, 2009. / Animal and Wildlife Sciences / unrestricted
7

Evaluating the Dosimetric Impact of Treatment Couch Modeling in the RayStation TPS

Lyons, Kristopher Aaron January 2020 (has links)
No description available.
8

Planification de traitement en radiothérapie stéréotaxique par rayonnement synchrotron. Développement et validation d'un module de calcul de dose par simulations Monte Carlo / Development and validation of Monte Carlo dose computations for contrast-enhanced stereotactic synchrotron radiation therapy

Vautrin, Mathias 26 September 2011 (has links)
La radiothérapie stéréotaxique par rayonnement synchrotron (SSRT) est une technique innovante utilisant un faisceau synchrotron de rayons X monochromatiques entre 50 et 100 keV. Une augmentation de dose par prise de contraste est obtenue localement par effet photoélectrique sur unélément lourd injecté dans le volume cible (tumeur cérébrale). Des essais cliniques de SSRT sont encours de préparation à l’ESRF (établissement européen de rayonnement synchrotron). Un systèmede planification de traitement (TPS) est nécessaire pour le calcul de l’énergie déposée au patient(dose) pendant le traitement. Une version dédiée du TPS ISOgray a donc été développée. Ce travaildécrit l’adaptation du TPS réalisée, particulièrement au niveau du module de simulation virtuelleet de dosimétrie. Pour un calcul de dose, le TPS utilise une simulation Monte Carlo spécifique desphotons polarisés et de basse énergie. Les simulations sont réalisées depuis la source synchrotron,à travers toute la géométrie de la ligne de lumière modélisée et dans le patient. Pour ce calcul, desmatériaux spécifiques ont été notamment ajoutés pour la modélisation voxélisée du patient, afin deprendre en compte la présence d’iode dans certains tissus. Le processus de calcul Monte Carlo a étéoptimisé en vitesse et précision. De plus, un calcul des doses absolues et des temps d’irradiation,particulier à la SSRT, a été ajouté au TPS. Grâce à des mesures de rendements, profils de dose, etdoses absolues, réalisées à l’ESRF en cuve à eau et en fantôme solide avec ou sans couche d’os, lecalcul de dose du TPS a été validé pour la SSRT. / Contrast-enhanced stereotactic synchrotron radiation therapy (SSRT) is an innovative techniquebased on localized dose-enhancement effects obtained by reinforced photoelectric absorption inthe tumor. Medium energy monochromatic X-rays (50 - 100 keV) are used for irradiating tumorspreviously loaded with a high-Z element. Clinical trials of SSRT are being prepared at the EuropeanSynchrotron Radiation Facility (ESRF), an iodinated contrast agent will be used. In order tocompute the energy deposited in the patient (dose), a dedicated treatment planning system (TPS)has been developed for the clinical trials, based on the ISOgray TPS. This work focuses on the SSRTspecific modifications of the TPS, especially to the PENELOPE-based Monte Carlo dose engine. TheTPS uses a dedicated Monte Carlo simulation of medium energy polarized photons to compute thedeposited energy in the patient. Simulations are performed considering the synchrotron source, themodeled beamline geometry and finally the patient. Specific materials were also implemented inthe voxelized geometry of the patient, to consider iodine concentrations in the tumor. The computationprocess has been optimized and parallelized. Finally a specific computation of absolute dosesand associated irradiation times (instead of monitor units) was implemented. The dedicated TPSwas validated with depth dose curves, dose profiles and absolute dose measurements performedat the ESRF in a water tank and solid water phantoms with or without bone slabs.
9

Trends in Strategic Planning in Private Social Service Agencies: A Test of the Ramanujam and Venkatraman Planning Model

Gilbertson, Diana L. 12 1900 (has links)
This study modified the Ramanujam and Venkatraman (1987) questionnaire that was used to develop their model of planning system dimensions and planning effectiveness, and tested the model on a sample of private social service agencies. The criterion measures were level of planning sophistication, agency size, perceived environmental uncertainty, and relative competitive position. The sample was randomly drawn from private social service agencies which were members of the Community Council of Greater Dallas. Telephone interviews with fifty executive directors were conducted by a trained, impartial interviewer. Stepwise discriminant analysis was used to predict group membership between informal and formal planners. Of the nine dimensions in the model, three dimensions correctly classified 84 percent of the sample. The three dimensions were fulfillment of planning objectives, use of decision making techniques, and lack of resistance to planning. The level of perceived environmental uncertainty was another criterion set. Directors who perceived high uncertainty paid more attention to the external environment, used more decision making techniques, and relied on functional specialists when planning. Large and small agencies were classified by their annual budgets. Stepwise discriminant analysis using the planning system dimensions failed to reject the null hypothesis. Agencies reporting strong relative competitive positions placed greater emphasis on seeking information for planning from external sources. These agencies also reported less resistance for planning within their organizations, fulfillment of more planning objectives, and a flexible planning system. The discriminant analysis correctly classifed 74 percent of the sample. Finally, the study provided some baseline information on the use of planning techniques by private social service agencies. Just over half of the sample reported having written strategic plans covering at least three years.
10

En processförbättring för ökad lagersaldosäkerhet / A Process improvement for improving inventoryrecord accuracy

Dalborg, Ida January 2019 (has links)
Companies can satisfy their customers and stakeholders, become competitive and develop their effectiveness through effective logistic. The customers do not only request the right product andquality but also delivery precision. For the industries to deliver in time it is essential to have raw material and components in time to produce the products that the customer request. A correct inventoryrecord makes it easier to see when ordering is required and makes it possible to implement automatic order system. Many companies though, are struggling with their record accuracy. A company thatcould benefit from improving their record accuracy is SweProd Graphics AB. This student thesis aims therefore to find possible solutions to improve the inventory record accuracy. The issues that are treated in this thesis are the following: How well does the actual stock balance match the reported inventory balance? How to improve the inventory record accuracy? Which are the possibilities with the new ERP that the company are planning to implement and how can they use it? The method to answer these questions are interviews, researches in Visma, inventories, benchmarking, process mapping and literature studies. The theories deal with the importance of correct stockbalance, how stocktaking can be simplified and followed up, different methods for inventory accounting and different material planning system. The result showed that there is a need of improving the inventory record accuracy. Today the inventoried quantity is both more and less than the reported inventory balance. Nine potential reasons areidentified, these are among delivery, outbound and stocktaking. The suggestions to improve the inventory record accuracy are to record the transactions at the start of an order, simplifying the stocktaking, keep statistics over stocktaking and establish reorder points and two bin system. / Genom effektivare logistik kan företag tillfredsställa kunder och övriga intressenters behov, bli konkurrenskraftiga och öka sin effektivitet. Möjligheten att tillfredsställa kundernas behov är beroende av tillgång till material. Kunden efterfrågar inte bara rätt produkt och kvalitet utan också leveransprecision. För att de producerande företagen ska kunna leverera i tid krävs det att de har tillgång till material och komponenter för att kunna producera de produkter som kunden efterfrågar. Ett korrekt redovisat lagersaldo gör det enklare att se när material behöver beställas in och gör det möjligt att införa automatiska beställningssystem. Många företag har dock inte korrekt redovisade lagersaldon idag. Ett av de företag som skulle ha nytta av att förbättra sin lagerredovisning är SweProd Graphics AB. Examensarbetet som utförs på SweProd Graphics AB syftar därför till att finna möjliga tillvägagångssätt för att förbättra lagersaldosäkerheten. Frågeställningarna som behandlas i arbetet är:  <ul type="disc">Hur väl stämmer det verkliga lagersaldot med det redovisade lagersaldot i Visma?   Hur kan lagersaldosäkerheten förbättras?  Hur kan företaget använda sig av det systemstöd som ska införas? För att besvara frågeställningarna har intervjuer, undersökningar i Visma, inventeringar, benchmarking, processkartläggning och litteraturstudier använts som metod. Teorierna behandlar vikten av korrekt lagersaldo, hur inventeringar kan förenklas och följas upp, olika metoder för lagerredovisning och olika materialplaneringssystem.  Resultatet visade på att det finns ett behov av att förbättra redovisningen av lagersaldot. Som det ser ut i dagsläget är det inventerade antalet både mer och mindre än vad systemet redovisar. Nio potentiella orsaker till varför lagersaldot inte stämmer har identifierats, dessa återfinns både inom inleverans, utleverans och inventering. För att förbättra lagersaldosäkerheten ska förslagsvis materialuttag registreras vid start av produktionsorder, inventering förenklas, statistik föras över inventering och beställningspunkt och tvålådesystem införas.

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