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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

The use of models in planning: the development of a land use planning strategy.

Pak-Poy, P.G. January 1971 (has links)
Title page, table of contents and summary only. The complete thesis in print form is available from the University of Adelaide Library. / With the advent of comprehensive transportation studies over the last several years in Australia, some inadequacies in land use p1anning have been high1ighted. In general there is seen to be a need for a more systematic approach and a greater use of models or analytical techniques. This thesis briefly reviews transportation studies and planning techniques and then discusses the development and current status of urban development mode1s, classifying them into three viz; (i) descriptive (ii) predictive models, and (iii) prescriptive models or planning models. It is noted that the models form on1y a part of the of the planning process and that they are really sub-models total system. Using a systems analysis approach, a planning framework or system model is then developed which forms the basis for the preparation of a planning strategy, within which detailed development and transport plans can be evolved. The framework is designed to facilitate the use of models as befits their operational status and to highlight areas where judgements and intuition are required. In developing the p1anning system model a discussion is given on forecasting techniques, problems relating to the definition of objectives and criteria, difficu1ties encountered in obtaining community goals and rational public participation, considerations relating to the formulation of plans, techniques of plan eva1uation inc1uding sensitivity analysis and flexibility tests, and implementation strategy. Two case studies are given to illustrate the efficacy of the procedures proposed. The first example related to the preparation of a strategic plan for a city with an expected population of 200,000 people, whereas the second case study concerns the hypothetical choice between two alternative forms of development over the next five years for metropolitan Adelaide. In the final chapter a brief discussion is given on worthwhile research items. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1523138 / Thesis (M.T.P.) -- University of Adelaide, Department of Architecture and Town Planning, 1971
2

Tactical Network Flow and Discrete Optimization Models and Algorithms for the Empty Railcar Transportation Problem

Suharko, Arief Bimantoro 04 February 1998 (has links)
Prior to 1980, the practice in multilevel autorack management was to load the railcars at various origin points, ship them to the destination ramps, unload them, and then return each car to the loading point where it originated. Recognizing the inefficiency of such a practice with respect to the fleet size that had to be maintained, and the associated poor utilization due to the excessive empty miles logged, a consolidation of the railcars was initiated and completed by February 1982. Under this pooling program, a central management was established to control the repositioning of three types of empty railcars for eight principal automobile manufacturers. Today, the practice is to consolidate the fleets of all automobile manufacturers for each equipment type, and to solve the distribution problem of repositioning empty multilevel autoracks of each type from points at which they are unloaded to automobile assembly facilities where they need to be reloaded. Each such problem is referred to in the railroad industry as a repositioning scenario. In this dissertation, we present two tactical models to assist in the task of centrally managing the distribution of empty railcars on a day-to-day basis for each repositioning scenario. These models take into account various practical issues such as uncertainties, priorities with respect to time and demand locations, multiple objectives related to minimizing different types of latenesses in delivery, and blocking issues. It is also of great practical interest to the central management team to have the ability to conduct various sensitivity analyses in its operation. Accordingly, the system provides for the capability to investigate various what-if scenarios such as fixing decisions on running a specified block of cars (control orders) along certain routes as dictated by business needs, and handling changes in supplies, demands, priorities, and transit time characteristics. Moreover, the solution methodology provides a flexible decision-making capability by permitting a series of runs based on a sequential decision-fixing process in a real-time operational mode. A turn-around response of about five minutes per scenario (on a Pentium PC or equivalent) is desired in practice. This dissertation begins by developing several progressive formulations that incorporate many practical considerations in the empty railroad car distribution planning system. We investigate the performance of two principal models in this progression to gain more insights into the implementation aspects of our approach. The first model (TDSS1: Tactical Decision Support System-1) considers all the identified features of the problem except for blocking, and results in a network formulation of the problem. This model examines various practical issues such as time and demand location-based priorities as well as uncertainty in data within a multiple objective framework. In the second model (TDSS2: Tactical Decision Support System-2), we add a substantial degree of complexity by addressing blocking considerations. Enforcement of block formation renders the model as a network flow problem with side-constraints and discrete side-variables. We show how the resulting mixed-integer-programming formulation can be enhanced via some partial convex hull constructions using the Reformulation-Linearization Technique (RLT). This tightening of the underlying linear programming relaxation is shown to permit the solution of larger problem sizes, and enables the exact solution of certain scenarios having 5,000 - 8,000 arcs. However, in order to accommodate the strict run-time limit requirements imposed in practice for larger scenarios having about 150,000 arcs, various heuristics are developed to solve this problem. In using a combination of proposed strategies, 23 principal heuristics, plus other hybrid variants, are composed for testing. By examining the performance of various exact and heuristic procedures with respect to speed of operation and the quality of solutions produced on a test-bed of real problems, we prescribe recommendations for a production code to be used in practice. Besides providing a tool to aid in the decision-making process, a principal utility of the developed system is that it provides the opportunity to conduct various what-if analyses. The effects of many of the practical considerations that have been incorporated in TDSS2 can be studied via such sensitivity analyses. A special graphical user interface has been implemented that permits railcar distributors to investigate the effects of varying supplies, demands, and routes, retrieving railcars from storage, diverting en-route railcars, and exploring various customer or user-driven fixed dispositions. The user has the flexibility, therefore, to sequentially compose a decision to implement on a daily basis by using business judgment to make suggestions and studying the consequent response prompted by the model. This system is currently in use by the TTX company, Chicago, Illinois, in order to make distribution decisions for the railroad and automobile industries. The dissertation concludes by presenting a system flowchart for the overall implemented approach, a summary of our research and provides recommendations for future algorithmic enhancements based on Lagrangian relaxation techniques. NOTE: (03/2011) An updated copy of this ETD was added after there were patron reports of problems with the file. / Ph. D.
3

The planning process in São Paulo

Bautista, Julienne Monton 18 August 2010 (has links)
Planning for the development of water infrastructure within informal settlements in the city of São Paulo, Brazil is a complicated process. This research uses the Rational Planning Model to explore the differences between planning in North America and in the Global South. Further, this research develops the various aspects of planning in the Global South through the examination of policy documents, interview data to identify the behavior of the practitioner – the urban planner - and his/her agency – creating the municipal perspective. / text
4

An Extension to the Tactical Planning Model for a Job Shop: Continuous-Time Control

Teo, Chee Chong, Bhatnagar, Rohit, Graves, Stephen C. 01 1900 (has links)
We develop an extension to the tactical planning model (TPM) for a job shop by the third author. The TPM is a discrete-time model in which all transitions occur at the start of each time period. The time period must be defined appropriately in order for the model to be meaningful. Each period must be short enough so that a job is unlikely to travel through more than one station in one period. At the same time, the time period needs to be long enough to justify the assumptions of continuous workflow and Markovian job movements. We build an extension to the TPM that overcomes this restriction of period sizing by permitting production control over shorter time intervals. We achieve this by deriving a continuous-time linear control rule for a single station. We then determine the first two moments of the production level and queue length for the workstation. / Singapore-MIT Alliance (SMA)
5

Obecný model a postup plánování sportovních akcí / General model and process of planning sports events

Vízek, Patrik January 2018 (has links)
Title: General model and process of plannig sports events Objectives: The aim of this work is create and propose general process of plannig sports events and also construct and propose general model of planning sports events. Methods: The diploma thesis used a method of qualitative analysis and synthesis of knowledge from selected events. Results: The outputs of the thesis are the general model and the process of planning sports events, which are applicable to any sports event and serves organizers to simplify their work on preparing sports event. Keywords: planning, organization, planning model, planning process, sports event
6

A stochastic short term financial planning model using time series analysis

Goodman, Richard Dwight January 1989 (has links)
No description available.
7

Developing an interpretive planning model for a national park: a stakeholder-based needs assessment study for Korea

Cho, Kye Joong 19 April 2005 (has links)
No description available.
8

Primjena multikriterijumske analize u procesima planiranja i rada malih hidroelektrana / Application of Multicriteria Decision Analysis in Planning and Operation of Small Hydropower Plants

Marinović Budimirka 30 September 2016 (has links)
<p>Projekti malih hidroelektrana, kao čistih izvora energije, treba da<br />doprinesu ekonomskom razvoju i razvoju društva u cjelini kroz održiv<br />razvoj, tako da je procesu planiranja projekata malih hidroelektrana<br />potrebno pristupiti s posebnom pažnjom. Rezultati ovog istraživanja<br />su pokazali da efektivno i efikasno upravljanje procesom planiranja<br />malih hidroelektrana doprinosi ostvarenju strateških ciljeva<br />upravljanja energetskim sistemom.</p> / <p>The projects concerned with small hydropower plants, which are considered<br />as a clean energy source, are expected to contribute to the economic aspect<br />of sustainable development of society as a whole. Therefore, the planning<br />process of these projects calls for particular attention. The results of the<br />research reveal that effective and efficient management of the planning<br />process of small hydropower plants contributes to the realization of strategic<br />goals set within energy system management.</p>
9

A Study of Moment Recursion Models for Tactical Planning of a Job Shop: Literature Survey and Research Opportunities

Teo, Chee Chong 01 1900 (has links)
The Moment Recursion (MR) models are a class of models for tactical planning of job shops or other processing networks. The MR model can be used to determine or approximate the first two moments of production quantities and queue lengths at each work station of a job shop. Knowledge of these two moments is sufficient to carry out a variety of performance evaluation, optimization and decision-support applications. This paper presents a literature survey of the Moment-Recursion models. Limitations in the existing research and possible research opportunities are also discussed. Based on the research opportunities discussed, we are in the process of building a model that attempts to fill these research gaps. / Singapore-MIT Alliance (SMA)
10

Addressing water availability and climate change issues in the Cordillera Blanca, Peru through technical analysis and community building strategies

Read, Laura K. 14 February 2011 (has links)
Accelerated tropical glacial melt on the order of 15-18 meters per year since the 1980's in Peru's Cordillera Blanca region is alarming rural communities and urban authorities, causing them to seek technical support for risk management and adaptation actions. Melting glaciers coupled with changing seasonal rainfall patterns has left many rural communities in the upper Rio Santa basin lacking sufficient fresh water supply to support livestock, irrigation and human consumption. In response to these concerns, a Water Evaluation And Planning (WEAP) model was created by the Stockholm Environmental Institute for simulating glacial melt and flow in the Santa River. Through input parameters of climate, glacial runoff, water use, crop acreage, soil type and groundwater interactions, WEAP has the flexibility to model scenarios for different operation schemes. These schemes allow users to determine the most effective ways to regulate their resources and explore adaptation actions (e.g. altering farming practices and building reservoirs) for future planning. This project improved the existing model by including observed water demand data for irrigation, and evaluating the Climate Forecast System Reanalysis (CFSR) dataset to serve as a potential source for filling gaps in the historic climate record. These improvements added robustness to the model and correlated well with historic stream flow at La Balsa (R² = 0.78 , Nash = 0.68). Two scenarios were explored where (1) a 50% reduction in potato crop was replaced with maize for each sub-basin, and (2) a 10% reduction in precipitation was applied over the upper basin. Results show that the WEAP model is sensitive to changes in crop type and rainfall at the sub-basin scale, an encouraging finding for future exploration. This investigation enables communities to base future decisions on technical evidence and provides a basis for educating citizens on the importance of evaluating their available resources under climate change projections / text

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