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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

A Study of Bricks and Clicks -the Case of Online Bookstore and Online Newspaper

Chen, Mei-Jin 26 June 2001 (has links)
The purpose of the thesis is to explore how the legacy firms extend their online business. Should they integrate the online business division with traditional division in order to leverage the established competency, or spin off the online business division and keep it separate from the traditional division in order to get more flexibility and focus? The study tried to find the factors that effect firms to keep the online business separate from established business or urge firms to integrate the online business in-house. These factors can help firms decide whether to keep or spin off the online business division. The main conclusions of this thesis: 1. Check the shock of the online business Explores the idea of "disruptive technology" that clashes with the current culture/business model versus "sustaining technology" that enables further success of the current culture/model. If the internet business is disruptive technology, you should spin it off. 2. If interrelationship between the established business unit and the internet business unit can bring competitive advantage to each other, or the established business unit have the core competency or resource to make the internet business unit competitive, you should take advantage of the synergy by horizontal strategies.
22

Properties of Roman bricks and mortars used in Serapis Temple in Bergama/

Aslan Özkaya, Özlem. Böke, Hasan January 2005 (has links) (PDF)
Thesis (Master)--İzmir Institute of Technology, İzmir, 2005. / Keywords: serapis temple, roman brick, roman mortar, pozzolanicity. Includes bibliographical references (leaves. 111-115).
23

A process for making refractory insulating brick

Tetley, Albert Lloyd. January 1939 (has links) (PDF)
Thesis (B.S.)--University of Missouri, School of Mines and Metallurgy, 1939. / The entire thesis text is included in file. Typescript. Title from title screen of thesis/dissertation PDF file (viewed April 26, 2010) Includes bibliographical references (p. 25).
24

The effect of various methods of grinding on the physical properties of unfired dry press brick

Harvey, Edwin Theodore. January 1930 (has links) (PDF)
Thesis (B.S.)--University of Missouri, School of Mines and Metallurgy, 1930. / The entire thesis text is included in file. Typescript. Illustrated by author. Title from title screen of thesis/dissertation PDF file (viewed November 19, 2009)
25

Recyclage des déchets de terre cuite / Recycling of fired clay waste

Cilli-Dogru, Elmas 30 November 2016 (has links)
Le recyclage ou la réutilisation des déchets de démolition de maisons individuelles, de petits collectifs et de sites industriels édifiés en terre cuite, est actuellement limité par la présence de déchets composites, formés par l’assemblage de terre cuite, de mortier et / ou de plâtre principalement. Dans l’optique de valoriser la terre cuite dans la même filière ou dans d’autres secteurs industriels, la présence de plâtre, pouvant générer des ions sulfates au contact de l’eau, est un obstacle. La principal option de fin de vie des déchets de terre cuite en mélange est ainsi l’enfouissement en installation de stockage de classe 3. Le but de cette thèse a été de développer une méthode de séparation des déchets de démolition de terre cuite, plus intéressante d’un point de vue environnemental que l’enfouissement, et permettant de récupérer des matières premières secondaires de terre cuite valorisables dans des filières pertinentes. Une étude du gisement a été réalisée afin d’établir la nature des assemblages en présence dans les déchets de déconstruction et de fournir des échantillons représentatifs. Ces échantillons ont permis la détermination des mécanismes d’adhésion des interfaces. Une méthode de séparation a ainsi été développée et la compatibilité des matières premières secondaires de terre cuite a été comparée vis-à-vis de trois filières de valorisation. / Recycling or reuse of demolition waste from individual houses, small collectives and industrial sites built with fired clay bricks, is currently limited by the presence of mixed waste, which is mainly an assembly of fired clay bricks, mortar and gypsum. In the perspective to valorize fired clay waste from demolition, the presence of gypsum, which may contain sulfates, is a restriction. Currently, the main end-of-life option for non-dissociated fired clay waste is the landfilling in waste storage facilities of class 3. The aim of this PhD thesis is to develop a separation process of mixed fired clay waste, environmentally more friendly than landfilling, in order to recover and valorize secondary raw materials in relevant industrial sectors. A study of the deposit has been done to identify the nature of the mixed demolition waste and to supply representative waste samples. Those samples enable to define the adhesion mechanisms at the interfaces. Then, a separation method has been developed. Finally, three routes have been investigated in order to valorize the recovered clay bricks.
26

Properties of mortar bond to various brick

Forkner, Henry R., Hagerman, Robert S. January 1948 (has links)
The project was broken down into the following Proposals: Proposal I - A comparison of the previous method of making brick couplets with a modified Pearson Method. Proposal II - A comparison of mortar bonds using two mortar flows, three mortars, and two methods of forming couplets. Proposal III - A comparison of mortar bond to brick with emphasis in texture of surface of brick in contact with mortar which joins them. Proposal IV - A comparison of the mortar bond of a make of brick of original high suction rate with a representative of the same make of brick and the same suction rate but which has been adjusted to successively lower suction rates. Proposal V - The effects of adjustments of suction rate on mortar bond properties. Proposal VI - A comparison of the mortar bond of a low suction rate brick with a medium suction rate brick using two surface textures. Proposal VII - A comparison of the mortar bond on one type brick using cored and solid brick. Two different suction rates were used. / M.S.
27

A study of the effect of cracks on the resonant frequency and dynamic modulus of elasticity of insulating brick by the dynamic testing method

Lio, Lim Yock 26 April 2010 (has links)
Vertical cracks normal to the major axis of a standard fire brick will cause a lowering of the dynamic modulus of elasticity calculated. / Master of Science
28

The Brand Extension from Clicks to Bricks with Satisfaction, Trust and Loyalty

Cheng, Yi-wen 20 August 2012 (has links)
Although rapid expansion and development of e-commerce makes many physical stores integrate website as their business strategy, we find new commercial trend is more and more e-retailers now activity operate traditional stores. The aim of this study is to examine the relationship of satisfaction, trust and loyalty in both online and offline channels, testing the effects of convenience of Clicks and Bricks, and we also compare different brand experiences affect on satisfaction, trust and loyalty. This research provides an overview of findings from previous studies in both online and offline environments, presents framework and build the hypothesis. Due to there is no thesis concentrates on satisfaction, trust and loyalty from online to offline, we would like to fill this gap. We do the examinations and comparisons by questionnaire study. Our target group is female who has one of 17 apparel brands experience. Our results have significant findings and offer researchers and practicing managers alike valuable information on how online shopping experiences relate to offline shopping experiences. Moreover, we prove operating physical stores enhances customer attitude in both online and offline channel.
29

Utilization of reclaimed bricks to facilitate circular economy (CE) in the construction industry : A study of Pakistan’s construction industry

Atiq, Adil January 2023 (has links)
This thesis investigates the possible utilization of reclaimed bricks within the framework of circular economy (CE) and sustainable construction approaches, with a particular emphasis on Pakistan's construction industry. The research is based on the theoretical foundations of the Triple Bottom Line (TBL) and Resource Efficiency concepts. Qualitative methods were used to collect data, and a thematic framework was employed to analyse the results. The findings indicate that Pakistan's reclaimed brick sector aligns with the principles of the TBL theory, supporting sustainability in its social, economic, and environmental aspects. Through waste reduction, material reuse, and resource conservation, the industry demonstrates its commitment to environmental preservation. Furthermore, it plays a significant role in the economy by providing affordable infrastructure solutions and contributing to the growth of the construction industry. Additionally, the industry promotes social well-being by providing employment opportunities and financial stability. The study illustrates how Pakistan's reclaimed brick operations effectively integrate social, economic, and environmental factors to create a more environmentally friendly built environment. In summary, reclaimed bricks present a sustainable and resource-efficient alternative for the construction industry, in line with the principles of resource efficiency, preserving resources, minimizing waste, and promoting circular economy practices. The adoption of reclaimed bricks can help Pakistan and other countries achieve their sustainability objectives, reduce environmental impact, and construct structures that are longer-lasting and resource-efficient.
30

Återbruk av tegel : En jämförelse mellan nyproducerat och återbrukat tegel / Reuse of bricks : A comparison between newly produced and recycled bricks

Lundin, Lucas, Persson, William January 2023 (has links)
Byggbranschen är idag en av de ledande faktorerna till både avfall och koldioxidutsläpp i Sverige. Detta beror till stor del på råvaruutvinning och användning av jungfruliga material. En stor del av både utsläpp och avfallsmängder skulle kunna minskas genom att nyttja mer återbruk. Ett material som lämpar sig för återbruk är tegel. Syftet med arbetet är att öka återbruk av tegel i Sverige för att minska utsläppen från byggsektorn. Målet med studien är att redogöra återbruksprocessen för tegel och att jämföra skillnader mellan nyproducerat tegel och återbrukat tegel. Metoderna för att ta reda på återbruksprocessen samt skillnader mellan nyproducerat och återbrukat tegel är genom en litteraturstudie och via praktiska tester. Litteraturstudien genomfördes för att skapa större förståelse kring tegel och dess egenskaper samt hur det kan återbrukas. För att jämföra nyproducerat och återbrukat tegel har fyra SIS-tester utförts på massivt nyproducerat, hålat nyproducerat, massivt återbrukat och hålat återbrukat tegel. Återbruksprocessen för tegel är en process som idag används av ett företag som heter Brukspecialisten. Återbruksprocessen har fyra steg som består av en inventering av byggnaden innan rivning, tegelpant på allt tegel som går att återbruka, transport av tegel och tegelhanteringsprocess. Processen bidrar till hållbara, miljösparande och ekonomiska byggnadsmaterial som återanvänds i stället för att slängas på deponi. Återbrukat tegel säljs med tillhörande produktinformation som beskriver tryckhållfasthet, färg, åtgång per m2och rekommenderad typ av murbruk. Dessa steg skapar en återbruksmarknad för tegel som är konkurrenskraftig mot nyproducerat tegel. Resultatet från studien visar att tegel från både 1900- och 1960-talet är återbrukbart och går att använda. Tegel som återbrukas testas och klassas om med hänsyn till tekniska egenskaper från testerna. Teglets nya klassning innebär att teglet kan återanvändas i nya projekt med nya förutsättningar. / The construction industry is currently one of the leading contributors to both waste and carbon dioxide emissions in Sweden. This is largely due to the extraction of raw materials and the use of virgin materials. A significant portion of both emissions and waste could be reduced by utilizing more reuse. One material that is suitable for reuse is bricks. The purpose of this work is to increase the reuse of bricks in Sweden in order to reduce emissions from the construction sector. The goal of the study is to outline the process of reusing bricks and to compare the differences between newly produced bricks and reused bricks. The methods used to understand the process of reusing bricks and the differences between newly produced and reused bricks are through a literature study and practical tests. The literature study was conducted to gain a better understanding of bricks and theirs properties, as well as how they can be reused. To compare newly produced and reused bricks, four SIS tests were conducted for solid newly produced, perforated newly produced, solid reused, and perforated reused bricks. The process of reusing brick is currently performed by a company called Brukspecialisten. The reusing process consists of four steps, which involve conducting a survey of the building before demolition, implementing a brick deposit system for all reusable bricks, transportation of the bricks, and brick handling processes. This process contributes to sustainable, environmentally friendly, and cost-effective building materials that are reused instead of being discarded in landfills. Reused bricks are sold with accompanying product information that describes compressive strength, color, consumption per square meter, and recommended type of mortar. These steps create a competitive market for reused bricks as an alternative to newly produced bricks. The results of the study indicate that bricks from both the 1900s and the 1960s are reusable and can be used. Reused bricks undergoe testing and are reclassified based on theirs technical properties from the tests. The bricks new classification means that they can be reused in new projects with new requirements.

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