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1
Polnický, Adam. "Návrhy na zlepšení hospodaření s dlouhodobým hmotným majetkem." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2009. http://www.nusl.cz/ntk/nusl-222098.
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This dissertation solves the problems with management of capital goods in the company STROJÍRNA OSLAVANY, spol. s r.o.. The work is elaborated from the analysis of present situation in the plant, whereas the heed is oriented to the most important areas, especially the organisation and service activity and maintenance of assets. The result of the performed analysis is the identification of weak points. Proposals are submitted in the second part of the work, in order to solve the problems found by presented analysis. The economical evaluation of the proposals and determination for assumptions for the application of extended result to company use is performed at the end of the work.
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Plech, Martin. "Výkon realitní činnosti." Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-232575.
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This the sisdeals with the problem of the strengths and weaknesses of real estate in area the Czech Republic. It defines the basic terms and definitions as sociated with real estate activities. It analyzes the mistakes of real estate companies. Provides tips for preventing errors. Publishes statistical information about the property market. The data are statistically evaluated and incorporated into the graphics. These obtained datas are intended for practical use for the valuation of yield method.
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Panajotovová, Monika. "Stanovení optimálních parametrů úvěrů na realitním trhu a jejich praktické využití v budoucnu." Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-232554.
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This master´s thesis examines the development of real estate financing in relation to the credit crunch. Accordnig to main causes of fluctuations in history, comparing interest rates, mortgage loans, property development and investment in time, it models the evolution of optimal interest rates of real estate market. The loans’ optimal parameters with combination of types of bank financing in the real estate market with regard to its sustainable development as a separate and independent global market with strong inclusion among the other market sectors, are formed there. In this dissertation the analysis of financing methods will be used, comparative method of commercial banks‘ interest rate and analysis of commercial interest rates‘ structure. The result of the work we expect to be optimistic, realistic and pessimistic scenarios of futher development of real estate finance market and the model of the optimal interest rates‘ structure.
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Cheng, Xiaoyu. "Applications of Artificial Neural Networks (ANNs) in exploring materials property-property correlations." Thesis, Queen Mary, University of London, 2014. http://qmro.qmul.ac.uk/xmlui/handle/123456789/7968.
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The discoveries of materials property-property correlations usually require prior knowledge or serendipity, the process of which can be time-consuming, costly, and labour-intensive. On the other hand, artificial neural networks (ANNs) are intelligent and scalable modelling techniques that have been used extensively to predict properties from materials’ composition or processing parameters, but are seldom used in exploring materials property-property correlations. The work presented in this thesis has employed ANNs combinatorial searches to explore the correlations of different materials properties, through which, ‘known’ correlations are verified, and ‘unknown’ correlations are revealed. An evaluation criterion is proposed and demonstrated to be useful in identifying nontrivial correlations. The work has also extended the application of ANNs in the fields of data corrections, property predictions and identifications of variables’ contributions. A systematic ANN protocol has been developed and tested against the known correlating equations of elastic properties and the experimental data, and is found to be reliable and effective to correct suspect data in a complicated situation where no prior knowledge exists. Moreover, the hardness increments of pure metals due to HPT are accurately predicted from shear modulus, melting temperature and Burgers vector. The first two variables are identified to have the largest impacts on hardening. Finally, a combined ANN-SR (symbolic regression) method is proposed to yield parsimonious correlating equations by ruling out redundant variables through the partial derivatives method and the connection weight approach, which are based on the analysis of the ANNs weight vectors. By applying this method, two simple equations that are at least as accurate as other models in providing a rapid estimation of the enthalpies of vaporization for compounds are obtained.
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Curtis, David. "Properties, proper parts and resemblance." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0028/MQ36425.pdf.
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Hoye, Julie Annalisa. "An Investigation of Solute Solubility in the Propellant HFA-134a." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/196098.
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The reformulation of pressurized metered dose inhalers (MDIs) with hydrofluoroalkanes (HFAs) from chlorofluorocarbons (CFCs) has given rise to many solubility challenges. Compounds and excipients previously used in CFCs were observed to have significantly different solubility values in HFA-134a. In this investigation, the solubility values of solid organic solutes were determined in pure HFA-134a and HFA-134a with cosolvent (0 - 20% w/w ethanol). The solubilities of solid solutes in HFA-134a were also compared with those in 2H,3H-decafluoropentane (DFP) in order to assess the suitability of DFP as a liquid model propellant. The experimental set of solutes display diverse physico-chemical properties and yielded solubility values that ranged over four orders of magnitude. The experimental solubilities were compared to calculated values obtained from ideal solubility and regular solution theory models. While the theoretical models did not offer absolute solubility estimations, a clear correlation with the ideal solubility (melting point) was noted. Further consideration utilizing multiple linear regression models afforded correlations based on molecular properties. Regression models, containing melting point and logP (or molar volume) resulted in promising correlations in both pure HFA-134a and HFA-134a/cosolvent systems where the average absolute errors ranged from 0.49 to 0.82 log units, (average factor errors of 3.09 and 6.61, respectively). In general, a linear relationship was observed between log mole fraction solubility in HFA-134a and fraction ethanol. The effect on solubilization ranged from 1.3 to 99.4 times when 20% w/w ethanol was introduced, relative to pure HFA-134a. DFP appears to be a promising liquid model for pure HFA-134a for pre-formulation calculations. A two parameter equation were found to be significant in pure HFA-134a where the average absolute error (AAE) value was 0.61 log units (average factor errors of 4.07).
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Cheatham, Michelle Andreen. "The Properties of Property Alignment on the Semantic Web." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1407775249.
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Chau, Pui-see. "Property asset management refurbishment of aged properties in Hong Kong /." View the Table of Contents & Abstract, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38027422.
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Chau, Pui-see, and 鄒佩詩. "Property asset management refurbishment of aged properties in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B45008802.
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Eichstadt, Amy Elizabeth. "Structure-Property Relationships and Adhesion in Polyimides of Varying Aliphatic Content." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/28379.
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Aromatic polyimides have found widespread applicability which can be partially attributed to their thermal stability, chemical resistance, and high glass transition temperature. However, deficiencies in their processability, solubility, transparency, and relatively high dielectric constants do not always provide the optimum properties for many specialty microelectronics applications. The incorporation of aliphatic segments to form partially aliphatic polyimides, has been used to counteract these shortcomings. Many of the potential uses of partially aliphatic polyimides require them to adhere to ceramic substrates, a main topic of this research.
Polyimides and copolyimides that varied in chemical composition by their aliphatic content were characterized by their molecular weight, glass transition temperature, thermal stability, coefficient of thermal expansion, refractive index, dielectric behavior, and mechanical properties. Structure-property relationships were established. The gamma and beta sub-Tg viscoelastic relaxations were investigated to understand their molecular origins.
The adhesion performance of a selected series of partially aliphatic polyimides to SiO2/Si was examined using a shaft loaded blister test, which was designed and instrumented for use in a dynamic mechanical analysis instrument. The adhesion was studied at high and low percent relative humidities and for several temperatures to examine if adhesion strength is influenced by polymer chemical composition. The adhesion energy could not be quantified for the entire series of polyimides. It was possible to interpret the quantitative adhesive fracture energies along with the qualitative adhesion strength behaviors, the failure surface analyses, and to offer an understanding of the adhesive chemical structure-physical property relationships. These understandings provide a conclusion that the incorporation of aliphatic segments into the polyimide chemical structure improves the durability of the adhesive bond to SiO2/Si under high percent relative humidities.Ph. D.
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Koedtruad, Anucha. "SYNTHESIS OF NOVEL METAL HALIDES AND THEIR STRUCTURE-PROPERTY RELATIONS." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263484.
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Chan, Yat-chung Desmond. "Difficulties and problems of property managers of investment properties in Beijing." Click to view the E-thesis via HKUTO, 2003. http://sunzi.lib.hku.hk/hkuto/record/B31969318.
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Chan, Yat-chung Desmond, and 陳一忠. "Difficulties and problems of property managers of investment properties in Beijing." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B31969318.
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Fei, Song Ran. "Exclusive or extraterritorial? : jurisdiction in cross-border patent infringement, a Chinese perspective." Thesis, University of Macau, 2010. http://umaclib3.umac.mo/record=b2139814.
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Kwong, Lap-shun Keith, and 鄺立信. "Conflicts between owners' organizations and property management companies in private residential properties." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B44400858.
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Deutsch, Annabel. "Kazhdan's property (T) and related properties of locally compact and discrete groups." Thesis, University of Edinburgh, 1992. http://hdl.handle.net/1842/13631.
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In this thesis we look at a number of properties related to Kazhdan's property (T), for a locally compact, metrisable, σ-compact group. For such a group, G, the following properties are equivalent. 1. Kazhdan's definition of property (T): the trivial representations is isolated in the unitary dual of G (with the Fell topology). 2. The group, G, is compactly generated and for every compact generating set, K, there is a positive constant, ε, such that if π is a unitary representation of G on a Hilbert space, cal H, and ζ is a unit vector in cal H such that vskip 0.7cmthen π fixes some non-zero vector in cal H. This is often taken as the definition of property (T). 3. Every conditionally negative type function on G is bounded. 4. For a discrete group, G is finitely generated and for every finite generating set, K, zero is an isolated point in the spectrum of the Laplacian. From 2 we can define the Kazhdan constant, the largest possible value of ε for a given G and K. In Chapter 2 we investigate how to calculate these constants. In Chapter 4 we look at the bound on conditionally negative type functions and use its existence to extend a result of A.Connes and V.Jones about the von Neumann algebras of property (T) groups. The first half of Chapter 3 examines the spectrum of the Laplacian for a discrete group and finite generating set and compares its least positive element to the Kazhdan constant. Non-compact property (T) groups are all non-amenable. However, the standard example of a non-amenable group F_2, does not have property (T). The second half of Chapter 3 looks at the spectrum of λ(Δ) for F_2 with various generating sets, where λ is the left regular representation of G on l2(G). For any non-amenable group, the smallest element of Spλ(Δ) is positive. Chapter 5 is an attempt to extend various results about F2 to other non-amenable groups.
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Suzuki, Katsuhito. "Study on the continuous production process of microfibrillated cellulose composites." Kyoto University, 2017. http://hdl.handle.net/2433/225321.
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Siddons, Chynthia Janette. "Metal ion complexing properies [i.e. properties] of amide donating ligands /." Electronic version (PDF), 2004. http://dl.uncw.edu/etd/2004/siddonsc/chynthiasiddons.pdf.
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Moreira, Décio. "Proposta de metodologia e procedimentos para obtenção de informações planimétricas georreferenciadas de imóveis rurais e urbanos para fins de desapropriação e registro: estudo de casos." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/3/3138/tde-28032008-165433/.
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Este trabalho apresenta uma proposta de metodologia e procedimento para georreferenciar os pontos limites dos imóveis tornando os documentos oficiais representativos do espaço real ocupado pelo imóvel rural ou urbano e, portanto, adquirindo confiabilidade para uso nas desapropriações e no registro de imóveis, incluindo uma sugestão para apresentação do memorial descritivo. Também é apresentado um histórico da ocupação territorial do Brasil, a evolução da forma de adquirir os imóveis e exemplos de sistemas de registro de imóveis. Como o interesse comercial dos imóveis, com o passar do tempo foi se acentuando, o modo de adquirir que era feito por tradição deu lugar à transcrição, tornando públicas as transferências de domínio e a existência de ônus reais sobre os imóveis. Estão incluídos os principais conceitos envolvidos com o georreferenciamento, a implantação de uma Rede de Referência Municipal, conforme a NBR 14.166, e o Cadastro, destacando sua importância e a implantação em outros países. Conclui apontando os problemas pesquisados e fazendo recomendações para viabilizar a proposta apresentada, destacando a necessidade do compartilhamento das informações com a comunidade envolvida.This work presents a proposal of methodology and procedure to georeference the limit point of real estate so that the official documents would become representative of the actual space which is occupied by either rural or urban real estate, thus acquiring reliability to be used in both dispossession and register of real estate, including a suggestion for the presentation of the descriptive memorial. It also presents a detailed report of the occupancy of territory in Brazil, the evolution of the way to acquire real estate and examples of real estate register systems. As the commercial interest in real estate became stronger in the long run, the way of acquiring it, which used to be based on tradition, was replaced by transcription, making both the transfer of domain and the existence of real onus on real estate public. Futhermore, it includes the main concepts involved with georeferencing, the implementation of a Municipal Reference Network, according to NBR 14166, and Cadaster, emphasizing its importance and its implantation in other countries. Finally, it concludes pointing out the researched problems and making recommendations for making the presented proposal feasible, laying stress upon the importance of sharing information with the community involved.
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Ben, ghzaiel Tayssir. "Synthèse, caractérisation et étude des propriétés magnétiques et diélectriques de nanocomposites Polyaniline/hexaferrite pour l'absorption des micro-ondes." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLN003/document.
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Ces travaux de thèse consistent à élaborer des nanocomposites Polyaniline/hexaferrite pour l’absorption des micro-ondes. L’idée principale est la mise en œuvre de matériaux composites à base de polymères conducteurs intrinsèques telle la Polyaniline que nous avons dopée avec différents types d’acides (HCl, CSA, NSA et TSA…) et l’hexaferrite de baryum de type magnétoplombite (M) stœchiométrique ou substitué. Au niveau de l’hexaferrite de baryum, la substitution du Fe3+ s’est faite par les ions Al3+, Bi3+, Cr3+ et Mn3+.L’hexaferrite de baryum et les hexaferrites substitués par les différents ions cités ci-dessus ont été synthétisés par voie hydrothermale dynamique en faisant varier divers paramètres au cours de la synthèse (pH, température, temps, rapport [OH-]/[NO3-]…).L’élaboration des composites Polyaniline/hexaferrite (pur ou substitués) a été effectuée par polymérisation oxydative en utilisant plusieurs techniques de synthèse : la polymérisation chimique en solution (en tenant compte de la nature de l’acide utilisé) avec ou sans agitation (Aqueous-Based Polymerization with or without stirring) et la polymérisation oxydative par voie solide (Solid-Based Polymerization). L’optimisation de ces différentes techniques de synthèse après caractérisations physicochimiques (DRX, FTIR, ATG, MEB, EDX), diélectriques (ε’, ε’’, σdc) et magnétiques (Mr, Ms, Hc, Tc, µ’, µ’’) des échantillons, a montré que la polymérisation par voie solide se trouve la méthode la plus facile, économique et respectueuse de l’environnement. Elle est aussi adaptée à la production du composite Pani/BaFe12O19 avec de bonnes propriétés structurales, physiques et magnétiques. L’étude de la substitution du Fe3+ dans le BaFe12O19 par Al3+, Bi3+, Cr3+ et Mn3+ a montré une forte dépendance des propriétés structurales et magnétiques avec la distribution de ces ions dans la maille cristalline hexagonale. En effet, les ions Al3+, Cr3+ et Mn3+ ont une tendance à occuper les sites tétraédriques, alors que le Bi3+ occupe les sites octaédriques. Une augmentation de Hc associée à la taille des cristallites a été observée pour les particules substituées avec l'Al et le Cr alors qu’une modification de l'anisotropie magnetocristalline (fort terme d'ordre supérieur) a été mise en évidence pour les substitutions Bi et Mn, dû à leur grand rayon ionique. L’incorporation des hexaferrites substitués dans la Polyaniline pour obtenir des composites Pani/BaMeFe11O19, où Me = Al, Bi, Cr et Mn, révèle une variation des propriétés électromagnétiques dans la gamme de fréquences allant de 1 à 18 GHz. En effet, ces variations sont dues à la formation de dipôles entre l’ion de substitution et les cations O2- dans le ferrite qui sont responsables de la résonance ferromagnétique, de l'anisotropie magnétocristalline et des interactions avec la matrice polymérique. Le composite Pani/BaFe12O19 présente des absorptions dans la bande X qui se déplacent vers la bande Ku avec la substitution du fer confirmantThis thesis deals with the formulation of Polyaniline/hexaferrite nanocomposite for absorbing electromagnetic waves. The main idea is the process of composite materials based on polymers intrinsic conductors such as polyaniline that we doped with different types of acids (HCl, CSA, NSA, and ... TSA) and barium hexaferrite with magnetoplumbite structure with or without substitution according to desired stoichiometries. In the barium hexaferrite, the substitution of Fe 3+ is made by Al3+, Bi3+, Cr3+ and Mn3+ ions.The barium hexaferrite and its substitutions by different ions mentioned above were synthesized dynamic hydrothermal method by varying various parameters during the synthesis (pH, temperature, time, ratio [OH-]/[NO3-] ...).The elaboration of polyaniline/hexaferrite composite (pure or substituted) was carried out by oxidative polymerization using various synthesis techniques: Aqueous-Based Polymerisation with or without agitation (taking into account the nature of the acid used) (ABP) and Solid-Based Polymerization (SBP). The optimization of these various synthesis techniques after physicochemical (XRD, FTIR, TGA, SEM, EDX), dielectric (ε ', ε' ', σdc) and magnetic (Mr, Ms, Hc, Tc, µ', µ'') characterizations of the samples showed that the solid route is the easiest method, economical and environmentally friendly. It is also suitable for the production of composite Pani/BaFe12O19 with good structural, physical and magnetic properties.The study of the substitution of Fe 3+ in the BaFe12O19 by Al3+, Bi3+, Cr3+ and Mn3+ showed a strong dependence of the structural and magnetic properties with the distribution of these ions in the hexagonal crystal lattice. In fact, Al3+, Cr3+ and Mn3+ ions tend to occupy the tetrahedral sites, while the Bi3+ favoured the octahedral sites. An increase in Hc associated with the small crystallite size observed for particles substituted with Al and Cr and the enhancement magnetocristalline anisotropy (strong higher order term) for Bi and Mn due to their high ionic radius.The incorporation of the substituted hexaferrite in the polyaniline to obtain Pani/BaMeFe11O19 composite, where Me = Al, Bi, Cr and Mn, reveals a variation in electromagnetic properties in the frequency range from 1 to 18 GHz. In fact, these variations are due to the formation of dipoles between the substituting ion and surrounding O2- cations in the ferrite which are responsible for the ferromagnetic resonance, the magnetocrystalline anisotropy and the exchange interaction with the polymer. The composite Pani/BaFe12O19 shows absorption bands at the X-band that shift to the Ku-band with the substitution of iron, confirming the potential of these materials for microwave applications
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Byler, Kendall Grant. "3D-QSAR and physical property modeling using quantum mechanically derived molecular surface properties." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=98430813X.
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Reich, Jason S. "Property-based testing and properties as types : a hybrid approach to supercompiler verification." Thesis, University of York, 2013. http://etheses.whiterose.ac.uk/5650/.
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This thesis describes a hybrid approach to compiler verification. Property-based testing and mechanised proof are combined to support the verification of a supercompiler — a particular source-to-source program optimisation. A careful developer may use formal methods to ensure that their program code is correct to specifications. Poorly constructed compilers (and their associated machinery) can produce object code that does not have the same meaning as the source program. Therefore, to ensure the correctness of the executable program, each component of the compilation pipeline needs to be verified. Lazy SmallCheck — a property-based testing library — is extended with support for existential qualification, functional values and a technique for displaying partial counterexamples. Lazy SmallCheck is then applied to the efficient generation of test programs for a small first-order functional language, specified using declarative statements of program validity. We extend the technique with several definitions of canonical programs to reduce the test-data space. A supercompiler is implemented for a core higher-order language, contrasting implementations found in other publications. We also survey the techniques and themes seen in the literature on compiler proof. These surveys inform the development of an abstract verified supercompiler in a dependently-typed language. In this work, we represent correctness properties as types. This abstract model is then adapted to integrate mechanical proof and results of property-based testing to verify a working supercompiler implementation. While more work is required to improve the framework’s ease-of-use and the speed of verification, the results show that this approach to hybrid verification is feasible.
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Tsukamoto, Yasuyuki. "Strongly proper dyadic subbases and their domain theoretic properties." Kyoto University, 2016. http://hdl.handle.net/2433/215621.
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Kyoto University (京都大学)0048
新制・課程博士
博士(人間・環境学)
甲第19795号
人博第766号
新制||人||184(附属図書館)
27||人博||766(吉田南総合図書館)
32831
京都大学大学院人間・環境学研究科共生人間学専攻
(主査)教授 立木 秀樹, 准教授 櫻川 貴司, 教授 日置 尋久
学位規則第4条第1項該当
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Gaspar, Blake T. "Influence of Grain Size and Widmanstätten Colonies on Variability of Tensile Properties of Forged Ti-6Al-4V." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1196.
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When testing forgings for specifications, it was found that some parts did not meet the requirements for mechanical properties. This triggered an investigation into two of the parts from the lot that did not meet specification. The ultimate reason for failure was due to lower than necessary yield strength and ultimate tensile strength values, as well as unwanted variability between regions of the part. Therefore, samples of the regions were tensile tested to determine the differences that existed in yield strength, ultimate tensile strength, and elongation. After tensile testing, quantitative metallography and fractography were conducted to identify aspects of the microstructure and fracture surfaces that may have caused the variability. Three aspects of the microstructure that were identified as characteristics that may affect the mechanical properties were: grain size, Widmanstätten colony size, and volume fraction of the β phase. Based on measurements it was determined that a smaller Widmanstätten colony size found to be roughly 120 microns/colony was associated with a larger yield strength and UTS than larger colony sizes of roughly 170 microns/ colony. Grain size also played a role with smaller grain sizes of roughly 1550 microns/grain being associated with a higher yield strength and UTS than the larger grains of roughly 2000 microns/grain. Fractography also suggested that the presence of interlamellar decohesion and trans-lamellar failure may have created sites of further crack initiation, resulting in a lower ultimate tensile strength. These differences were theorized to be caused by a temperature gradient created during the heat treatment that created non-uniform cooling rates, resulting in the differences in microstructural characteristics.
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Chatham, Camden Alan. "Property-Process-Property Relationships in Powder Bed Fusion Additive Manufacturing of Poly(phenylene sulfide): A Case Study Toward Predicting Printability from Polymer Properties." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/100053.
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Powder bed fusion (PBF) is one of seven technology modalities categorized under the term additive manufacturing (AM). Beyond the advantages of fabricating complex geometries and the "tool-less manufacturing" paradigm common to all types of AM, polymer PBF shows potential for significant industrial relevance through exploiting the technique's characteristic powder-filled bed (a.k.a. build piston) to utilize the full printer volume for batch-style production. Although PBF should be a suitable processing technique for all semi-crystalline polymers, the polyamide family currently occupies around 90% of the commercial market for polymer PBF. This commercial dominance of polyamides is mirrored in the focus of research publications.
The lack of chemical variety in published research questions the universality of reported Structure-Property-Process and Process-Structure-Property relationships for PBF. This dissertation presents the findings from identifying Structure-Property-Process relationships critical to fabricate multi-layer parts for poly(phenylene sulfide) (PPS) by PBF towards expanding PBF material selection and evaluating universality of relationship guidelines. PPS is an engineering thermoplastic used for its high strength, rigidity, dielectric properties, and chemical resistance at elevated temperatures. These properties are attributed to PPS' highly crystalline morphology. Its current use in the automotive and aerospace industries, which are early adopters of AM technologies, makes PPS a prime candidate for AM applications. Therefore, the goal of this work is to demonstrate PPS printing by PBF, study its behavior throughout the PBF lifecycle, and abstract general trends in polymer PBF relationships.
First, theoretical ranges for print parameter values are determined from properties of an experimental grade PPS powder feedstock. Successful printing of PPS by PBF is demonstrated in a way contrary to published empirical polymer-PBF relationships. Low temperature printing (i.e., bed temperature more than 15 °C lower than polymer peak melting temperature) of PPS successfully fabricated dimensionally accurate parts with reasonable mechanical properties compared against injection molding values. This distinct PPS behavior does not follow empirical guidelines developed for either polyamides or poly(aryl ether ketones).
The unique success of low-temperature PBF prompted further investigation into potential benefits of low-temperature printing. Structure-Property-Process relationships were characterized over the course of simulated powder reuse to show that low-temperature printing prolonged the time when PPS powder properties remained in the "printable" range. Significantly re-used PPS powder was shown to be printable when print parameters were adjusted to accommodate structure and property changes. Successful prints from reused powder is uncommon among published reports of PBF printing of high-performance engineering thermoplastics.
Observations of a change in molecular architecture through branching and crosslinking during simulated powder reuse motivated investigating if similar reactions occur in printed parts. PPS is commonly used at elevated temperatures in the presence of oxygen, which is the ideal environment for branching and crosslinking. Structural changes manifested in increased glass transition temperature and high temperature storage modulus. The relative change in structure when printed parts were thermo-oxidatively exposed was observed to be significant for parts printed from new powder, but minimal for parts printed from reused powder. This is a result of the structural changes occurring as powder feedstock during reuse over multiple builds.
The changing architecture of reused PPS exposed shortcomings with print parameter value selection based solely on polymer thermal properties. Branching and crosslinking reduced crystallinity, resulting in calculated less energy required to melt; however, it also increased melt viscosity. This negative impact on coalescence behavior was not reflected in the methodology for process parameter value determination because current guidelines neglect rheological properties. These observations motivated proposing a method for selecting print settings based on polymer coalescence behavior. Because it is based on coalescence, this method can predict the transition in governing physics from viscous coalescence to bubble diffusion, which is accompanied by a change in the dependence of mechanical properties on laser energy density.
Most work in polymer PBF has focused on "printed part triad'" Process-Property relationships. Work presented in this dissertation contributes to the "printability triad'" of Structure-Property-Process relationships and does so using the novel-to-PBF polymer, PPS. Additional polymers must be explored to continue to discern which polymer-manufacturing relationships are universal among all polymers and which are specific to one subset. The observations and connected interpretation to principles of polymer physics add to the body of knowledge for the polymer PBF field. These contributions will help pave the way for investigations into other polymer families and will re-shape the field's normative logic use when answering the question "what makes a polymer printable by PBF?" Understanding the connection between polymer properties and physical stimuli characteristic of PBF manufacturing will result in parts tailored for specific applications and more sustainable manufacturing, thus realizing additive manufacturing's full potential.Doctor of Philosophy
Powder bed fusion (PBF) is one of seven distinct additive manufacturing (AM, also known as ``3D printing'') technologies. The manufacturing process creates solid, three-dimensional shapes through selectively heating, melting, and fusing together polymer powder particles in a layer-by-layer manner. Currently, organizations are interested in complementing existing manufacturing technology with PBF for one of three general reasons: (1) "complexity is free" PBF has the ability to make shapes that are difficult or expensive to fabricate using other manufacturing technologies. (2) "tool-less manufacturing" PBF only requires a digital design file to fabricate objects. This enables small changes to be easily made via computer-aided design (CAD) programs without the need to invest time and money into tooling (e.g., molds, jigs, fixtures, or other product-specific tools). This enables "mass customized" products (e.g., custom-fit medical devices and implants) to be economically feasible. (3) "material efficiency" AM is attractive as it often generates less waste than subtractive manufacturing techniques like milling. This is particularly a concern for organizations that manufacture parts from expensive, high-performance polymers, such as in the aerospace and medical industries. Despite these benefits, the state of the art for polymer PBF has room for improvement. Specifically, there are many details regarding material behavior during PBF manufacturing that are unknown; any unknown behaviors present challenges to building confidence in production quality. Additionally, approximately 90% of current PBF use is nylon-12 or else another material in the polyamide family of semi-crystalline thermoplastics. This limited selection of commercially available materials compared against other forms of manufacturing contributes to PBF's circular quandary: the manufacturing process physics are not robustly understood because most experimentation and research has been carried out on one family of polymers; however, a wider variety of polymers has not been developed because there is a limited understanding of the process physics. This dissertation presents research toward answering both PBF challenge areas. The first three chapters present investigations into relationships between the properties of a novel, experimental grade poly(phenylene sulfide) (PPS) semi-crystalline thermoplastic polymer powder, the stimuli imposed on this polymer during PBF processing, and the resultant properties of printed parts (i.e., "property-process-property relationships"). The target polymer, poly(phenylene sulfide), is a high-temperature, high-performance polymer that is traditionally melt processed, but has not yet been commercialized for PBF. Prior literature has established mathematical representation for the interaction between manufacturing energy input and the thermal response of the polymer resulting in melting. This framework has been created through studying the polyamide family. Work presented in this dissertation evaluates existing guidelines for PBF process parameter selection using measured thermal behavior of PPS (i.e., a polysulfide, not a polyamide) to predict the range of manufacturing energies affecting geometrically accurate printed parts of high density and strength. In addition, the impact of thermal exposure from repeated PPS powder reuse over the course of multiple PBF prints was evaluated on powder, thermal, and rheological properties identified as critical for PBF printing. Changes to the molecular structure and properties of reused PPS powder were observed to follow different trends than those reported for other materials traditionally used. The effect of thermal exposure on printed parts was also investigated to determine if the observed changes in molecular structure occurring during thermal exposure of the powder would result in changes to mechanical performance properties of printed parts. The importance of rheological flow properties in dictating printed part performance was observed to be a common theme throughout working with PPS. The final chapter presents a novel method for quantitatively predicting particle fusion during PBF and connecting the extent of particle fusion to mechanical properties of printed parts. The presented method is "polymer agnostic" and advances the state of the art in understanding the physics guiding polymer response to stimuli imposed during PBF AM.
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Lau, Ming Jason, and 劉明. "An assessment of innovative applications in the property management ofselected commercial properties in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B45008528.
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Chan, Ka-wai Raif, and 陳嘉慧. "Quality assessment system for property management services in residential properties by reliability interval method (RIM)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B48339787.
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In Hong Kong, the responsibility for building management falls on property owners. To assist in building management, most property owners would appoint a property management company. Fulfilling relevant statutory requirements is mandatory for property management companies; however, it is debatable if meeting the basic statutory requirements is equivalent to providing quality property management services for property owners. In fact, property owners usually have more requests than minimum statutory requirements and it is therefore a multi-factor evaluation system for quality of residential property management services is proposed in this research project.
To develop the assessment system, quality property management services criteria, including dimensions and performance items, are identified through desk research and focus group interviews with owners’ representatives and property management practitioners. Interval score and ranking are then assigned to the identified assessment criteria by distributing questionnaires with pilot test to owners’ representatives, property management practitioners and building management team of Home Affairs Department of HKSAR. Data collected from the questionnaire are analyzed with weight assessment method: Reliability Interval Method (RIM) in which importance weightings of the criteria can be developed and statistical analysis is allowed. “Repair and Maintenance (excluding clubhouse facilities, if applicable)” and “Effectiveness of emergency repair and maintenance services”, which are not statutory requirements for managing residential properties, are respectively weighted as the most important dimension and performance item.
As far as application of the developed quality assessment system is concerned, services quality provided by major property management companies are measured and compared with questionnaires to students pursuing Housing Management in University of Hong Kong. The correlation between quality of property management services and numbers of properties managed by the company is not statistically significant; however, this is likely due to a small samples size, as the visual display of data suggests a relationship.
One interesting finding in this research is the high factor weight of assessment criteria which are not statutory requirements for managing residential properties. Such a result implies that meeting basic statutory requirements is not equivalent to providing quality property management services in the eyes of property owners. Besides, this research provides a framework for future development of a classification system to indicate how good a property is for meeting specific overall grading.
This research is important because quality of property management services in residential properties can be quantified and closely monitored with the developed quality assessment system in a performance-based, simple and standard way from the perspective of property owners. As far as the benefits of property management companies, which sell services in keen market, are concerned, it is expected that the system could keep supervising and thus improving the quality of services; delivery of high quality services is a profitable way to differentiate ones from the competitors.published_or_final_version
Housing Management
Master
Master of Housing Management
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Bester, Hermine. "Developing a repeat sales property price index for residential properties in South Africa / H. Bester." Thesis, North-West University, 2010. http://hdl.handle.net/10394/4565.
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In South Africa various financial institutions and independent vendors have developed
residential property valuation models to estimate the current value of historically traded
properties. A natural extension to these models has been to develop historical property price
indices. In this dissertation, three of the four approaches to developing property price indices
will be examined. Through back–testing and other statistical methods, the most accurate and
robust approach will be determined. The four major approaches available are the mean
valuation per suburb, the median valuation per suburb, the repeat sales approach and
hedonic regression. The mean valuation per suburb approach can be biased because of
outliers in property prices. However, outliers in property prices will not influence the median
valuation per suburb approach, but in cases where property values in a suburb have a
skewed distribution, the valuation amount could be distorted. Neither of the above
mentioned shortcomings influences the repeat sales or the hedonic regression approach. To
follow the hedonic regression approach, the characteristics of the property need to be
known. In South Africa, however, the available property data lacks detailed characteristics of
traded properties. This dissertation will therefore focus on the first three methods. The repeat
sales approach measures the growth in property prices by applying a generalized linear
model to properties that have traded more than once. This approach is only possible if there
is a representative amount of repeat sales able to fit a model. The focus of this project will be
on the repeat sales approach, but all three the approaches discussed will be analysed to
prove that the repeat sales approach is the most accurate in developing a property price
index for properties in South Africa.Thesis (M.Sc. (Risk Analysis))--North-West University, Potchefstroom Campus, 2011.
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Lievers, William Brent. "Effects of geometric and material property changes on the apparent elastic properties of cancellous bone." Kingston, Ont. : [s.n.], 2009. http://hdl.handle.net/1974/1788.
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Holmberg, Joel, and Carl-Johan Särnegrim. "Hyressättning på nyproduktion – En analys av Stockholmsområdet." Thesis, KTH, Fastigheter och byggande, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146883.
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Det vi vill uppnå med denna kandidatuppsats är att ta reda på hur en hyressättningsprocess fungerar och går till på en nyproducerad fastighet. Ordet nyproduktion kan definieras på olika sätt, i denna rapport har vi valt att definiera nyproduktion som “När den första hyresgästen flyttar in”. I och med denna definition är det endast helt nybyggda fastigheter som undersöks. Det vill säga att nyrenoverade fastigheter lämnas utanför denna studie. Syftet med rapporten är att undersöka hur hyressättningsprocessen fungerar för nyproducerade hyresrätter samt om de finns ett standardiserat utförande när hyresvärdar sätter denna hyra. Vi har även studerat lagändringen om presumtionshyra (2006), slopandet av bostadssubventionerna (2007) samt finanskrisen (2008) för att se hur dessa har påverkat marknaden och aktörerna. Vårt arbete baseras främst kring branschens tillvägagångssätt. Därför kommer en stor del av vår information från intervjuer, enkäter och undersökningar. De intervjuer vi har utfört har varit med framstående aktörer inom marknaden, men även mindre framstående. På så sätt har vi kunnat få ett bredare och ett större perspektiv på uppsatsen För att få så sammanhängande och relevant data som möjligt har vi valt att avgränsa vår undersökning till området stor-Stockholm. Dessa data kommer att samlas under en begränsad tidsperiod, där av begränsningen. Vi kom under arbetet fram till att det inte finns något standardiserat tillvägagångsätt utan aktörerna på marknaden agerar och genomför sin hyressättning på olika sätt. Gällande de lagändringar samt finanskrisen som vi även valde att studera så är slutsatsen att man inte sätt någon större förändring i bostadsbeståndet. Nyproduktion av hyresbostadsfastigheter var högre än produktionen av bostadsrätter innan slopandet av subventionerna och införandet av presumtionshyran. Finanskrisen skapade en viss osäkerhet på marknaden, men osäkerheten ledde även till att de byggdes fler hyresrätter än bostadsrätter på grund av att bostadsrätterna i en finansiell kris blir en större osäkerhet.What we want to achieve with this paper is to find out how companies set their rents on newly produced properties and to understand how the entire process works. The term newly produced can be defined in different ways, in our thesis we have chosen to define it as “When the first tenant moves in”. By using this definition we will therefore only be looking at properties that is newly built, in other words we have decided to exclude properties that have been restored. The purpose of our thesis is to investigate how a rent is decided for newly produced rented apartments and to see if there is standard procedure when the landlords set this rent. We have also studied the introduction of presumption rents (2006), the removal of the building subvention (2007) and the financial crisis (2008) to see how these affected the market and the companies involved. Our paper is based mainly around the industries approach to the process. Therefore the majority of our research will be based on information from interviews, surveys and researches. The interviews we have done has been with leading companies on the market, but also smaller companies in order to get a wider and more interesting perspective on our report. To get as contextual and relevant information as possible we have also decided to limit our report to Stockholm and its suburbs. This data will be gathered during a limited amount of time, therefore the mentioned limitation. Our conclusion is that there is no standard procedure for deciding a rent, the landlords act and set their rent in different ways. Concerning the law changes and the financial crisis we studied the conclusion is that there were no bigger difference regarding the amount of properties on the market. Production of rental apartments was higher than the production of tenant-owned apartments before the removal of the building subvention and the introduction of the presumption rent. The financial crisis created some uncertainty on the market, but the uncertainty also led to a higher production of rental apartments than tenant-owned apartments due to the tenant-owned apartment being a bigger risk in a financial crisis.
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Gibbons, Robert C. "Florida's common-law corporation sole an historical, civil law, and canon law analysis /." Theological Research Exchange Network (TREN), 2005. http://www.tren.com.
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Schroeder, Jeffrey S. "Right grantors and right seekers : a theory for understanding the comparative development of intellectual property rights /." view abstract or download file of text, 2001. http://wwwlib.umi.com/cr/uoregon/fullcit?p3004002.
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Thesis (Ph. D.)--University of Oregon, 2001.Typescript. Includes vita and abstract. Includes bibliographical references (leaves 260-272). Also available for download via the World Wide Web; free to University of Oregon users.
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Dahmash, Firas Naim. "An examination of the value relevance and bias in the accounting treatment of intangible assets in Australia and the US over the period 1994-2003 using the Feltham and Ohlson (1995) framework." University of Western Australia. Financial Studies Discipline Group, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0145.
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[Truncated abstract] The primary aim of this study was to examine, and compare, the value relevance and any bias associated with the reporting of intangible assets in Australia and the US over the ten-year period 1994 to 2003. The study adopts a disaggregated form of the Feltham and Ohlson (1995) valuation model and associated linear information models (LIMs) to allow goodwill and identifiable intangible assets to be separately examined using unbalanced panel regression analysis. The results for the Australian sample suggest that the adaptation of the Feltham and Ohlson (1995) valuation model used in this study is particularly useful in examining Australian equity securities. For example, the pooled sample analysis results in an adjusted R2 of 71%, which is consistent with similar US studies by Ahmed, Morton and Schaefer (2000) and Amir, Kirscenheiter and Willard (1997). Further, the results from the disaggregated Feltham and Ohlson (1995) valuation models suggest that the information presented with respect to intangible assets (both goodwill and identifiable intangible assets) under Australian GAAP is value relevant. However, the results from the valuation models also suggest that (for the average Australian company) the market believes goodwill is reported conservatively and identifiable intangible assets aggressively. ... As noted earlier, the increasing importance of intangible assets in the `new-economy’ suggests that (wherever possible having regard to the measurement difficulties) all intangible assets should be recognised in financial statements to maximise the value relevance of those statements. It should be noted, however, that there was some evidence to suggest that certain Australian companies (that is, those not consistently reporting positive abnormal operating earnings) might be reporting goodwill and/or identifiable intangible assets aggressively and this is an area that standard setters might need to carefully consider in future. I trust that the findings presented in this study will prove helpful to both researchers and those involved with formulating international accounting standards in this particularly difficult area of intangible assets. I also hope the results will help to allay any fears regulators (and others) might have that providing managers with accounting discretion will (necessarily) lead to biased reporting practices; based on the findings of this study for the majority of Australian and US companies, any such fears appear unwarranted.
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Lau, Ming Jason. "An assessment of innovative applications in the property management of selected commercial properties in Hong Kong /." View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B35808974.
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Leftwich, R. Wayne. "Reservoir sedimentation and property values a hedonic valuation for waterfront properties along Lake Greenwood, South Carolina /." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1181668928/.
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Li, Kwok-wah, and 李國華. "An evaluation of ISO 9000 quality system in the property management ofresidential properties in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B45008164.
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Burt, Tiffani M. "STRUCTURE-PROPERTY RELATIONSHIPS OF BLOCK COPOLYMERS CONFINED VIA FORCED ASSEMBLY CO-EXTRUSION FOR ENHANCED PHYSICAL PROPERTIES." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1355879195.
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Wanchana, Suchada. "Quantitative structure/property relationship modeling of pharmacokinetic properties using genetic algorithm-combined partial least squares method." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/148610.
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Hiranras, Nilobon. "The intellectual property and alternative legal protection for Thai cultural heritage properties, traditional knowledge and products." Thesis, Durham University, 2015. http://etheses.dur.ac.uk/11704/.
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This thesis comprises a study into whether the existing intellectual property regime, a sui generis system, or any adaptations or modifications of them have been successfully adopted for protecting both tangible and intangible cultural property and traditional knowledge of Thailand. How other developing countries have dealt with misappropriation issues and the limitations of the current intellectual property regime has also been studied. A number of concerns about and obstacles to traditional knowledge have been pointed out: the existing intellectual property system may have increased the risk of misappropriation or unauthorised use of traditional knowledge without consent; most developing countries have no comprehensive national policies or legal frameworks covering traditional knowledge; lack of effective legislation, authorities and mechanisms associated with intellectual property; the high cost of intellectual property procedures and management; the threat to the intellectual and cultural property rights of indigenous peoples; loss of cultural traditions/ articles and biodiversity; problems with maintaining and passing on cultural expression; as well as inequitable benefit-sharing and remedies. Intellectual property rights and traditional knowledge have become increasingly controversial globally, and sometimes they overlap. Due to the presumption that traditional knowledge is in the public domain, the current intellectual property rights regime can not efficiently and appropriately protect traditional knowledge and traditional cultural expressions/folklore, or provide equitable sharing for indigenous and local communities. Sometimes domestic legislation is insufficient, incompatible or in conflict with international intellectual property norms and policies. The most feasible solutions need to be rigorous, but flexible enough to cover the various forms of traditional knowledge and access to the generic resources of individual communities. Policy-making, development of categorisation and management of biodiversity data and local knowledge systems, effective strategies and mechanisms, international co-operation and support all need to be taken into consideration. It would be ideal to have a single legal system to protect all forms of intellectual property; unfortunately, in reality, this is impossible. However, depending on the capacity of governments and the readiness of their people, alternative or sui generis rights or a combination of any regimes of both preventive and positive protection could be developed and adapted and play a complementary role to balance the interests of all parties, while the general public can still access appropriate usage and benefits. Various ideas and alternative solutions from the different perspectives of international forums and other countries are gathered, analysed, proposed and recommended here for Thailand in particular.
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Avila, Melissa Barter. "The effect of resin type and glass content on the fire engineering properties of typical FRP composites." Worcester, Mass. : Worcester Polytechnic Institute, 2007. http://www.wpi.edu/Pubs/ETD/Available/etd-040307-133151/.
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Liu, Hau-chi Alice. "The downturn of post-1997 Hong Kong's property market and the government intervention." Click to view the E-thesis via HKUTO, 2002. http://sunzi.lib.hku.hk/hkuto/record/B31969173.
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Li, Sok-ching. "Building sustainable cities : a comparative analysis of heritage conservation in Hong Kong and Macau /." View the Table of Contents & Abstract, 2005. http://sunzi.lib.hku.hk/hkuto/record/B35080711.
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Lau, Pun-wai Christy. "A review on the effectiveness of the policy on protecting intellectual property rights in HKSAR." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36439459.
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Affleck, Janice. "Memory capsules discursive interpretation of cultural heritage through digital media /." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38587373.
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Chiu, Kit-yee. "Planning implications of private property development in China : a case study of Guangzhou /." Hong Kong : University of Hong Kong, 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B14017751.
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Grobler, Roger R. "A framework for modelling losses arising from natural catastrophes in South Africa." Pretoria : [s.n.], 2001. http://upetd.up.ac.za/thesis/available/etd-04042002-141358.
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Louey, Wing-hong. "Analysis of the asset valuation methods of real estate properties in the People's Republic of China and Hong Kong /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B2594762x.
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Wu, Ho-kei Maggie. "Partnership in heritage conservation what can Hong Kong learn from London? /." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B41680522.
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Hong, Keung. "The effect of improvement in transport infrastructure on residential price gradient in Hong Kong." Click to view the E-thesis via HKUTO, 2002. http://sunzi.lib.hku.hk/hkuto/record/B31969112.
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Li, Dan. "U.S. property tax study and enlightenment to China's residential property tax reform." abstract and full text PDF (free order & download UNR users only), 2006. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1438937.
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