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1

Whiting, Emily J. "Geometric, topological & semantic analysis of multi-building floor plan data." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/35123.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Architecture, 2006.
Includes bibliographical references (leaves 65-67).
Generating a comprehensive model of a university campus or other large urban space is a challenging undertaking due to the size, geometric complexity, and levels of rich semantic information contained in inhabited environments. This thesis presents a practical approach to constructing topological models of large environments from labeled floor plan geometry. An exhaustive classification of adjacency types is provided for a university infrastructure including roads, walkways, green-space, and the detailed interior spaces of campus buildings. The system models geospatial features for over 160 buildings within the MIT campus, consisting of more than 800 individual floors, and approximately 36,000 spaces spanning indoor and outdoor terrain. The main motivation is to develop an intuitive, human-centered approach to navigation systems. An application is presented for generating efficient routes between locations on MIT's campus with coverage of both interior and exterior environments. A second application, the MIT WikiMap, aims to generate a more expressive record of the environment by drawing from the knowledge of its inhabitants. The WikiMap provides an interface for collaborative tagging of geographical locations on the MIT campus, designed for interfacing with users to collect semantic data.
by Emily J Whiting.
S.M.
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2

Li, Jing Qiang. "Designing constraints for capacity analysis of residential floor areas." Virtual Press, 2004. http://liblink.bsu.edu/uhtbin/catkey/1292545.

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This thesis focuses on the development of design constraints for use in analyzing the capacity of the residential units' floor areas in Open Building projects. Two cases are used to demonstrate the use of these constraints: a vacant office building (Kales Building) being converted to residential occupancy; a new multi-story building the lower floors of which are hotel rooms and the upper floors are residential condominium units.The thesis suggests that these constraints and the capacity analysis of residential floor areas associated with them can assist design teams, at the beginning of similar projects; provide important "added value" to clients, and contribute to the long term "sustainability" or adaptability of buildings.The first part of the thesis addresses the question of how to design a residential base building which can accommodate an optimal number and variety of fit-out unit layouts. The answer to the question links to the need for design constraints and points to their use in capacity analysis.The second part of the thesis focuses on the deduction of "constraint-designing" for Open Building residential layout. Plumbing systems, which are one of the most significant barriers to the application of Open Building, are specifically and more deeply studied in this part. A series of constraints are developed, which can generally assist in designing and analyzing floor plate capacity. . It is akin to learning to know the rules before starting a game.The third part of the thesis focuses on the demonstration of the uses of constraints in the design process of the conversion of an abandoned office building to residential uses.The last part of the thesis demonstrates the use of constraints and capacity analysis in a new multi-story condo project.In short, the paper is initially concerned with both the design concept and its application into detail levels in one of the many issues. It is a study of methods and technical rules of designing floor plan layouts when capacity analysis is the aim.
Department of Architecture
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3

Warmington, Valerie (Valerie A. ). Carleton University Dissertation Geography. "Structural flood control and sustainable development; an analysis of the flood action plan for Bangladesh." Ottawa, 1994.

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4

Kolařík, Jan. "Analýza developerského projektu na výstavbu administrativního objektu v Brně." Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-233120.

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The aim of this diploma thesis is determine feasibility and profitability of property development project at particular lands in Brno. Solution of problem includes both, the legislative part that determines possibility lands focused on change of territorial plan and the financial part that estimates costs and revenues in project balance and potencial profits for investor, if project will be realized. Main result of this diploma thesis is to answer the question, if property development project should be realized at particular lands in question and estimate future value of lands and project. Diploma thesis \uv{Analysis of the development project for the construction of an administrative building in Brno} is useful for everyone, who needs estimate potential of a land for profit from realization of property development project.
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5

Hernández-González, Yeray, Michele Graziano Ceddia, Elena Zepharovich, and Dimitris Christopoulos. "Prescriptive conflict prevention analysis: An application to the 2021 update of the Austrian flood risk management plan." Elsevier, 2016. http://dx.doi.org/10.1016/j.envsci.2016.09.007.

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Flood events have become more frequent in Europe, and the adaptation to the increasing flood risks is needed. The Flood Directive set up a series of measures to increase European resilience, establishing Flood Risk Management Plans (FRMPs) at the level of the river basin district as one relevant action. In order to efficiently fulfil this objective, the involvement of stakeholders as well as the analysis of their roles, responsibilities, and demands has been considered to be crucial to develop FRMPs. As a result, the hypothesis tested in this paper is that a consensus solution for the 2021 update Austrian Flood Risk Management Plan is feasible. To demonstrate this, both in-depth interviews and questionnaires to key Austrian stakeholders are implemented. The information collected in both participatory techniques are then used to run a conflict prevention analysis. The results show that (a) improving the coordination among regions and including better land-use planning approaches are preferable to a hypothetical business as usual scenario; and (b) a consensus solution for the 2021 update Austrian FRMP might be achievable on the basis of both a deep discussion on the state-of-the art and green infrastructure development.
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6

Rojas, Castro Dalia Marcela. "The RHIZOME architecture : a hybrid neurobehavioral control architecture for autonomous vision-based indoor robot navigation." Thesis, La Rochelle, 2017. http://www.theses.fr/2017LAROS001/document.

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Les travaux décrits dans cette thèse apportent une contribution au problème de la navigation autonome de robots mobiles dans un contexte de vision indoor. Il s’agit de chercher à concilier les avantages des différents paradigmes d’architecture de contrôle et des stratégies de navigation. Ainsi, nous proposons l’architecture RHIZOME (Robotic Hybrid Indoor-Zone Operational ModulE) : une architecture unique de contrôle robotique mettant en synergie ces différentes approches en s’appuyant sur un système neuronal. Les interactions du robot avec son environnement ainsi que les multiples connexions neuronales permettent à l’ensemble du système de s’adapter aux conditions de navigation. L’architecture RHIZOME proposée combine les avantages des approches comportementales (e.g. rapidité de réaction face à des problèmes imprévus dans un contexte d’environnement dynamique), et ceux des approches délibératives qui tirent profit d’une connaissance a priori de l’environnement. Cependant, cette connaissance est uniquement exploitée pour corroborer les informations perçues visuellement avec celles embarquées. Elle est représentée par une séquence de symboles artificiels de navigation guidant le robot vers sa destination finale. Cette séquence est présentée au robot soit sous la forme d’une liste de paramètres, soit sous la forme d’un plan. Dans ce dernier cas, le robot doit extraire lui-même la séquence de symboles à suivre grâce à une chaine de traitements d’images. Ainsi, afin de prendre la bonne décision lors de sa navigation, le robot traite l’ensemble de l’information perçue, la compare en temps réel avec l’information a priori apportée ou extraite, et réagit en conséquence. Lorsque certains symboles de navigation ne sont plus présents dans l’environnement de navigation, l’architecture RHIZOME construit de nouveaux lieux de référence à partir des panoramas extraits de ces lieux. Ainsi, le robot, lors de phases exploratoires, peut s’appuyer sur ces nouvelles informations pour atteindre sa destination finale, et surmonter des situations imprévues. Nous avons mis en place notre architecture sur le robot humanoïde NAO. Les résultats expérimentaux obtenus lors d’une navigation indoor, dans des scenarios à la fois déterministes et stochastiques, montrent la faisabilité et la robustesse de cette approche unifiée
The work described in this dissertation is a contribution to the problem of autonomous indoor vision-based mobile robot navigation, which is still a vast ongoing research topic. It addresses it by trying to conciliate all differences found among the state-of-the-art control architecture paradigms and navigation strategies. Hence, the author proposes the RHIZOME architecture (Robotic Hybrid Indoor-Zone Operational ModulE) : a unique robotic control architecture capable of creating a synergy of different approaches by merging them into a neural system. The interactions of the robot with its environment and the multiple neural connections allow the whole system to adapt to navigation conditions. The RHIZOME architecture preserves all the advantages of behavior-based architectures such as rapid responses to unforeseen problems in dynamic environments while combining it with the a priori knowledge of the world used indeliberative architectures. However, this knowledge is used to only corroborate the dynamic visual perception information and embedded knowledge, instead of directly controlling the actions of the robot as most hybrid architectures do. The information is represented by a sequence of artificial navigation signs leading to the final destination that are expected to be found in the navigation path. Such sequence is provided to the robot either by means of a program command or by enabling it to extract itself the sequence from a floor plan. This latter implies the execution of a floor plan analysis process. Consequently, in order to take the right decision during navigation, the robot processes both set of information, compares them in real time and reacts accordingly. When navigation signs are not present in the navigation environment as expected, the RHIZOME architecture builds new reference places from landmark constellations, which are extracted from these places and learns them. Thus, during navigation, the robot can use this new information to achieve its final destination by overcoming unforeseen situations.The overall architecture has been implemented on the NAO humanoid robot. Real-time experimental results during indoor navigation under both, deterministic and stochastic scenarios show the feasibility and robustness of the proposed unified approach
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7

Hall, John Richard. "Strategic environmental assessment : a relevant methodology for flood plain planning and development control /." Title page, table of contents and abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09ENV/09envh1768.pdf.

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8

Nicoll, Gayle. "Taking the stairs environmental features that explain why people use stairs in 3 to 4 story academic workplace buildings /." Thesis, Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-05162006-114551/.

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Thesis (Ph. D.)--Architecture, Georgia Institute of Technology, 2007.
Dr. Craig Zimring, Committee Chair ; Dr. John Peponis, Committee Member ; Dr. Harold H. Kohl, Committee Member ; Dr. Abir Mullick, Committee Member ; Dr. Andrew Dannenberg, Committee Member.
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9

Ochwo, Jeniffer. "The design and evaluation of a Java image analysis tool for componentizing lines from digitial architectural floor plans." Master's thesis, University of Cape Town, 2006. http://hdl.handle.net/11427/6428.

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Includes bibliographical references (leaves 96-98)
This research set out to determine the feasibility of using Java to create a tool that could perform paper-to-electronic format conversion by vectorizing the lines in a raster image of an architectural floor plan. The tool aimed to apply a method that was previously used in another field (mechanical engineering) to Architectural floor plans. The method used had to overcome the problems associated with raster drawings that include noise and image disortions in addition to being able to identify lines, the line thickness and the junctions along the lines. The method used was the Global Line Vectorization Algorithm.
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10

Marcus, Khalid Behnam. "TWO-DIMENSIONAL FINITE ELEMENT ANALYSIS OF FLOW NEAR A BRIDGE IN A COMPLEX FLOOD PLAIN." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275268.

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11

Marek, Vít. "Protipovodňová ochrana obce Želešice na tocích Bobrava a Hajanský potok." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226143.

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This thesis is a study of flood protection in the community Želešice, Brno-venkov. The theoretical part deals with: the causes of flooding, their dividing and deals with options, how to protect endangered area. Main part includes calculations of the amount of sediment in the river Bobrava and the Hajanský stream, analysis of risks by quantitative expression, suggests to complete the flood plan of the community and a list of designed flood control measures with own technical suggestion. The last point is to consider, whether is the community threatened by backwater from the river Svratka, which the river Bobrava flows into.
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12

Castle, Eric E. "Geodatabases in design : a floodplain analysis of Little Kitten Creek." Thesis, Manhattan, Kan. : Kansas State University, 2007. http://hdl.handle.net/2097/327.

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13

Lage, Mayara Ribeiro. "Caracteriza??o de ?reas degradadas pela extra??o de cascalho: substrato, estrutura horizontal e flor?stica da regenera??o natural." UFVJM, 2016. http://acervo.ufvjm.edu.br/jspui/handle/1/1379.

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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES)
Um trecho da BR- 367, que liga a cidade de Diamantina ao distrito de Guinda, em Minas Gerais, perpassa por ?reas de campo rupestre na Serra do Espinha?o Meridional e apresenta diversas ?reas de empr?stimo, constitu?das por jazidas de material granular consumidas em obra rodovi?ria da pr?pria via entre as d?cadas de 1960 e 1980. Atualmente tais ?reas ainda apresentam-se fortemente degradadas, caracterizando-se pela fraca cobertura vegetal, exposi??o do solo e inexist?ncia de um sistema de drenagem superficial eficiente. Neste contexto, surge a necessidade de alternativas que tenham efic?cia na integra??o dos conhecimentos silviculturais e princ?pios ecol?gicos visando o retorno destas ?reas ?s condi??es pr?ximas das originais. Este trabalho teve como objetivo entender a rela??o entre vari?veis ambientais e a estrutura horizontal e flor?stica das esp?cies colonizadoras destes ambientes degradados. Foram selecionadas quatro ?reas degradadas, analisadas por fotografias a?reas referentes aos anos de 1960 e 1979 nas quais foi poss?vel detectar das ?reas degradadas pontuais. Para o estudo do substrato estratificou-se as quatro ?reas selecionadas para a coleta de amostras deformadas e indeformadas de forma preferencial. Obteve-se as propor??es de areia, silte, argila, dados de resist?ncia ? penetra??o, densidade de part?culas e aparente, porosidade total, micro e macro porosidade. Para a an?lises qu?micas foram coletadas entre 5 subamostras de cada estrato com o intuito de se obter uma amostra composta do substrato superficial (0-20 cm), de forma a representar a heterogeneidade ambiental de cada ?rea. Foram analisados: pH em ?gua; teores de P, K+, Mg2+, Ca2+ e Al3+; complexo sortivo (acidez potencial (H+Al), satura??o e soma por bases (V% e SB), CTC (T), CTC efetiva (t) e satura??o por alum?nio (m%) e mat?ria org?nica (MO). Os dados obtidos foram aferidos e submetidos a an?lises estat?sticas. Realizou-se an?lise de componentes principais (PCA) pelo software PCORD vers?o 6, de modo a sintetizar as vari?veis de maior relev?ncia na correla??o das vari?veis analisadas. Para levantamento da comunidade vegetal foi empregado o m?todo da interse??o na linha no qual em cada ?rea foram alocadas doze linhas com 10,0 m de comprimento, distribu?das em zigzag, seguindo as coletas de solo, para correlacionar caracter?sticas do solo e vegeta??o. Cada linha foi subdividida em dez unidades amostrais (UA) cont?nuas, totalizando 470 UAs e anotado a ocorr?ncia de esp?cies de h?bito herb?ceo, arbustivo e arb?reo. Foram calculadoss par?metros fitossociol?gicos: frequ?ncia absoluta (FA), frequ?ncia relativa (FR), cobertura absoluta (CA), cobertura relativa (CR) e o valor de import?ncia (VI). Para comparar os diferentes setores das ?reas estudadas quanto ao perfil de estrat?gias ecol?gicas de esp?cies herb?ceas, estas foram classificadas em sistemas de guildas de acordo com as estrat?gias de regenera??o, estratifica??o e dispers?o. Nas quatro ?reas analisadas foram amostrados 1.517 indiv?duos, pertencentes a 22 fam?lias e 109 esp?cies. A an?lise dos atributos f?sicos e qu?micos do substrato evidenciou alta limita??o ao desenvolvimento de plantas colonizadoras, apresentando como restri??es a alta resist?ncia a penetra??o e substratos de textura arenosa com baixa fertilidade natural. Verificou-se que houve rela??o entre os gradientes ambientais e a abund?ncia e composi??o flor?stica da vegeta??o colonizadora, ficando a maioria das esp?cies mais fortemente correlacionada com as vari?veis MO, H+Al e V al?m de propor??o de Areia, PT, DMG e RP.
Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016.
A section of the BR-367, connecting the Diamantina town to the Guinda district, Minas Gerais, runs through areas of rupestrian field of Espinha?o Range and presents several loan areas, consisting of deposits of granular material consumed in road construction between the 1960?s and 1980?s, Currently, these areas are still heavily degraded, characterized by poor vegetation cover, soil exposure and the absence of an efficient surface drainage system. In this context, the need arises for alternatives that have effectiveness in the integration of silvicultural knowledge and ecological principles aiming the return of these areas to the conditions close to the originals. This work aimed to understand the relationship between environmental variables and the horizontal and floristic structure of the colonizing species of these degraded environments. Four degraded areas were selected, analyzed by aerial photographs referring to the years 1960 and 1979 in which it was possible to detect the degraded areas. For the study of the substrate, the four areas selected for the collection of deformed and undisturbed samples were stratified in a preferential way. The proportions of sand, silt, clay, penetration resistance data, particle and apparent density, total porosity, micro and macro porosity were obtained. For the chemical analyzes, 5 sub-samples of each stratum were collected with the aim of obtaining a composite sample of the surface substrate (0-20 cm), in order to represent the environmental heterogeneity of each area. The following parameters were analyzed: pH in water; Contents of P, K +, Mg2 +, Ca2 + and Al3 +; (S), saturation (V%), sum of bases (SB), CTC (T), effective CTC (t) and saturation by aluminum (m%) and organic matter. A PCA was performed by software PCORD version 6, in order to synthesize the variables of greater relevance in the correlation of the analyzed variables. Was used the method of the intersection in the line in which in each area were allocated twelve lines with 10.0 m in length, distributed in zigzag, following the soil collections, to correlate soil and vegetation characteristics. Each row was subdivided into ten continuous sample units (AU), totaling 470 POAs and the occurrence of species of herbaceous, shrub and arboreal habit. Phytosociological parameters were calculated: absolute frequency (AF), relative frequency (FR), absolute coverage (AC), relative coverage (CR), and importance value (VI). In order to compare the different sectors of the studied areas with respect to the profile of ecological strategies of herbaceous species, these were classified in guild systems according to the strategies of regeneration, stratification and dispersion. In the four areas analyzed, 1,517 individuals belonging to 22 families and 109 species were sampled. The analysis of the physical and chemical attributes of the substrate showed a high limitation to the development of colonizing plants, presenting as restrictions the high resistance to penetration and substrates of sandy texture with low natural fertility. It was verified that there was a relation between the environmental gradients and the abundance and floristic composition of the colonizing vegetation, being most of the species more strongly correlated with the variables MO, H+Al and V besides the proportion of Sand, PT, DMG and PR.
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14

Liao, Yu-Lin, and 廖玉琳. "A Study on Factors Influencing Budget Distribution of Flood Treatment Plan of Flood Vulnerable Area in Taiwan: Analysis for Phase 1 Implementation Plan." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/00081016899525904009.

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碩士
國立臺灣大學
國家發展研究所
99
The distributive theory explores the distributing process as well as result of policy benefits and asserts that, driven by the motive of winning the next election, legislators will ask administrative counterparts for policy benefits to be allocated to their electoral district by all possible means in their curret service term. And in order to solicitate the budget growth and final approval, inbumbent administration will in most cases agree to legislators’ demand. Given the high frequency of election in Taiwan, the aforementioned issue is worth to disscuss to see whether distributive theory could explain the interaction between legislators and administration. To empirically testing the distribution theory, this study examines the factors influencing policy benefits distribution by investigating the county as well as city level grants allocation of phase1 implementation plan of flood treatment plan of flood vulerable area in Taiwan. The major findings of the study are as follows: 1. The factors influencing policy benefits distribution at county and city level changes as the definition of policy benefits varies. 2. Objective measures of demand factors, such as demand and urgency for flood treatment play a pivotal role in the process of policy benefits distribution. 3. Whether a legislator has the identity of being a member or chair in committee related to the budget and affairs in Ministry of Economic Affairs has effects on policy benefits distribution. 4. Competition level in legislators’ electoral district, the frequency of legislators’ interrogation, and the frequency of committee’s inspection to review the budget and implementation moderate the causal relationship of policy benefit distribution.
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15

YI, LIU PO, and 劉柏毅. "Analyses of the compositions on the floor plans of apartments - examples from the fifth、seventh 、eighth rezoning district, Taichung City." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/90568742198981586472.

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碩士
逢甲大學
建築學系
101
The development results of the urban land consideration policy of multi-stories buildings and dwelling houses in Taichung City enacted by the Taichung City Government has been profitable, such as the 7th rezoning district, is especially typical. The 7th rezoning district was designed and completed in 1990 when the promotion of real estate in Taichung City was focused on the 4th and 5th rezoning district. At that time, the 4th and 5th districts were characterized by completely new public infrastructure, dense population, and convenient transportation. The manifest development of villa style residences and few cases of residential buildings did not commerce until June 18, 1999 when the plot ratio was fully implemented. Soon after, in 1999, Taiwan suffered the shocking 921 earthquake. It was after that period that the real estate market was in a bleak state and the economy was in deep recession. The market did not begin to recover from the low ebb until 2002 when a variety of projects, such as the Three Direct Links, the Station of the National Opera House, relocation of the City Hall, and connection of the transportation network, were proposed and introduced one by one. Since then, the economy has gradually recovered, the prosperity curve started to climb up from its lowest point, and the number of promotions for new residential buildings has been rising year on year. The reason why the 7th rezoning district in Taichung City has been able to plan and design a diversity of residential products lies in the implementation of plot ratio, coupled with the execution of Regulations for Encouraging the Comprehensive Design of Building Sites, as well as the law for the transference of floor area. Different construction sites and market needs account for the diversity in the characteristic floor planning of the houses, including the planning configuration of what is called a mansion (four bedrooms and two living rooms) as well as multi-bedroom and multi-living room dwellings. Therefore, based on the methodological theory of the ”Shape grammar” has been applied to analyze the standard floor plans of the residential buildings in the 5th, 7th, and the 8th land consideration district of the Taichung City during the 1986~2013 period. By reading the drawings and analyzing the space and the functional compositions of its utilizational grammar, the communality or criteria of the floor plans of a building can be understood. The topology, a method from complex to simple, is utilized to facilitate the systematic interpretation of the flat space. This study discovered that residential buildings involved in the survey have various characteristics in different periods. For instance, spatial zoning was not significant during the 1986~1997 period when houses were entered from the front balcony and central halls were combined with dining rooms. During the 1998~2007 period, hallways were introduced as a buffer space. Further on, during the 2008~2013 period, the following planning appeared: four bedrooms including two master bedrooms, two living rooms, multi-bedroom and multi-living rooms, master generating lines collocating with slave generating lines, or locker rooms in the hallway changed into a restroom. Shape grammar is adopted to analyze the flat space of the construction of the combination type and the criteria for the different kinds of functional space. Meanwhile, topology and space syntax analysis are employed to generalize the spatial composition of the residential buildings in the 5th, 7th, and the 8th rezoning district of the Taichung City within the research period, so that the floor planning principals of different unit during each period can be constructed.
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Chuang, Hsin-Kai, and 莊心凱. "Combining Landform Thematic Layer and Object-Based Image Analysis to Map the Surface Features of Mountainous Flood Plain and Surrounding Areas." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/29428367125616072948.

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碩士
國立臺灣大學
土木工程學研究所
100
The Typhoon Morakot on August 2009 brought more than 2,000 mm of cumulative rainfall in southern Taiwan, the extreme rainfall event caused serious damage to the Kaoping River basin. The losses were mostly blamed on the landslides along sides of the river, and shifting of the watercourse even led to the failure of roads and bridges, as well as flooding and levees damage happened around the villages on alluvial plain and river terraces. Alluvial fans resulted from debris flow of stream feeders blocked the main watercourse and debris dam was even formed and collapsed. These disasters have highlighted the importance of mapping the watercourse alteration, surface features of flood plain area and artificial structures soon after the catastrophic typhoon event for natural hazard mitigation. Interpretation of remote sensing images is an efficient approach to acquire spatial information for vast areas, therefore making it suitable for the interpretation of terrain and surface features near the vast flood plain areas in a short term. The object-oriented image analysis program (Definiens Developer 7.0) and multi-band high resolution satellite images (QuickBird) were utilized to interpret the flood plain features from Liouguei to Baolai of the Kaoping River basin after Typhoon Morakot. Object-based image analysis split an image into meaningful homogenized segments for obtaining information such as shapes, textures, area and the mutual relationships of segments. After segmentation, we develop classification criteria to classify the image segments semi-automatically. Specific “landform thematic layers” produced by digital terrain models (DTM) are also employed along with the above process. These layers are especially helpful in differentiating some confusing categories in the spectrum analysis with improved accuracy, such as landslide and riverbed. The river terraces and alluvial plain, which are with significant meaning in terrain, can also be defined qualitatively. Finally, a fast, quantitative, large-scale and semi-automated image interpretation process is proposed. The result including river channel, vegetation, sandbar, alluvial plain, river terrace, alluvial fan, landslide, and the nearby artificial structures of mountainous flood plain and surrounding areas. It can be used as references for safety evaluation of riverside engineering structures, disaster prevention and mitigation, and even future land-use planning.
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Brice, Marie-Hélène. "Impacts de l'urbanisation sur la diversité spécifique et fonctionnelle dans les forêts riveraines." Thèse, 2015. http://hdl.handle.net/1866/13639.

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L'urbanisation représente une menace majeure pour la biodiversité. Ce mémoire de maîtrise vise à comprendre ses effets sur la composition fonctionnelle et l'homogénéisation biotique dans les forêts riveraines. Des inventaires floristiques ont été réalisés dans 57 forêts riveraines de la région de Montréal. Afin d'étudier la variation de la composition fonctionnelle avec l'urbanisation, des moyennes pondérées de traits par communauté ont été calculées pour les arbres, arbustes et herbacées. Chaque forêt a été caractérisée par des variables relatives au paysage urbain environnant, aux conditions locales des forêts et aux processus spatiaux. Les conditions locales, notamment les inondations, exerçaient une pression de sélection dominante sur les traits. L'effet du paysage était indirect, agissant via l'altération des régimes hydrologiques. La dispersion le long des rivières était aussi un processus important dans la structuration des forêts riveraines. Les changements dans la diversité β taxonomique et fonctionnelle des herbacées ont été étudiés entre trois niveaux d'urbanisation et d'inondation. Alors que l'urbanisation a favorisé une différenciation taxonomique, les inondations ont favorisé une homogénéisation taxonomique, sans influencer la diversité β fonctionnelle. L'urbanisation était l'élément déclencheur des changements de la diversité β, directement, en causant un gain en espèces exotiques et une diminution de la richesse totale dans les forêts très urbanisées, et, indirectement, en entraînant un important turnover d'espèces par l'altération des régimes hydrologiques. Globalement, ces résultats suggèrent que la modification des processus naturels par les activités anthropiques est le principal moteur de changements dans les communautés riveraines urbaines.
Urbanization is a major threat to biodiversity worldwide. This thesis aims at understanding its effects on plant functional composition and biotic homogenization in riparian forests. Floristic inventories were carried out in 57 riparian forests of the Montreal area. To investigate changes in functional composition with urbanization, community weighted means were computed for trees, shrubs and herbs using eight functional traits. Each forest was characterized by variables related to the surrounding urban landscape, local forest conditions and spatial processes. The relative importance of these three subsets on the functional composition was quantified by variation partitioning using redundancy analyses. Local conditions, especially flood intensity, exerted an overriding selection pressure on riparian functional communities. The effect of the landscape was suspected to be indirect, acting on trait patterns likely through alteration of hydrological disturbances in riparian forests. In addition to environmental filtering, dispersal along rivers was also an important process structuring riparian forests. Changes in taxonomic and functional β-diversity for herb species were studied between three urbanization and flood levels. While urbanization led to taxonomic differentiation, flood intensity fostered taxonomic homogenization, both without influence on functional β-diversity. Urbanization was the main trigger for all β-diversity changes, as it directly caused a gain in exotic species and a net species loss in highly urban forests, and indirectly fostered an important species turnover through alteration of the hydrological regime. Overall, these results suggest that the alteration and interruption of natural landscape-scale processes by human activities are major mechanisms underlying changes in urban riparian communities.
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