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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.
471

Handbook of Waste and Network of Re-use

Chavosh, Ardalan January 2012 (has links)
The intelligent handling of waste is a pressing issue today. Up until the 19th century it had been however an integral part of societies especially when it comes to the waste generated by construction and demolition (Bahamon and Sanjines, 2010). After industrial revolution (1750-1850) which opened the gates of mass production and mass consumption followed and supported by two major forces of capitalism and the dramatic increase in world population, the generation of waste accelerated correspondingly and in a global scale. The mass extraction of natural resources on one hand (limited amount of natural resources), and the problems caused by waste landfilling and incineration such as pollution and diseases on the other hand, made us stop this linear extraction-to-waste trend and recognize recycling as a solution. Recycling chiefly addresses a sustainable approach to reduce the negative effects of waste and at the same time involves processing used materials (waste) into new products to prevent waste of potentially useful materials (Eco Cloud), however through recycling not only some energy has to be consumed to make this process run but also some portion of pollution would be generated as a side effect. What is more is that up until today recycling has been neither in many cases economically profitable nor has it been possible to recycle all the amount of waste. For instance In US- as the most consuming society on the planet Earth- only 34% of the municipal solid waste can be recycled and the rest ends up in either landfills or incinerators (EPA,2010). This project is to mainly focus on the definition of a rather comprehensive network (Network of Reuse) which sits right before recycling through which as much as possible of the total amount of waste could be directly absorbed back into the society (with minor changes in some cases) in different scales, the resultants of which would be claimed not to be only less energy consumption and less pollution caused through processing waste (as in recycling) but also avoiding a considerable amount of unrecycled materials from ending up in landfills and incineration. In fact the assumed network-which is simulated by the smart grid model- could be said to be a complementary section added to the existing trend today and is on no account against recycling. Like any other network, the network of reuse is based upon strategies, tools, and policies. The rhizomic growing structure of this network-that is in contrast to the tree structure of recycling- suggests a bottom up movement in handling waste and empowering people while the proposed time-line strategy is assumed to be moving from entertainment towards a coherent business network. In fact the project itself suggests the necessity of more bottom up structures to happen in our future planning. The entire project is highly founded upon research and could be applied in a variety of actual designs and concrete cases. Therefore, in this project no specific site is being addressed directly but the actual need for adding the supposed network is explored.
472

Upgrading of Landfill Gas with Household Waste Slag / Rening av svavelväte och koldioxid i deponigas med slaggrus

Sadatgol, Seyedhani January 2015 (has links)
Modern landfills produce landfill gas, LFG, on a smaller scale and with limited content of degradable organic materials in the waste. The waste deposit in the Sofielund landfill began in 2005 and the final coverage is not yet commenced. The landfill waste must contain up to 10% decomposable organic materials at most. In a previous experiment on Sofielund landfill in summer 2011, the measurements from four sample wells showed the landfill gas consisted of up to 45% Methane and about 17000 ppm of Hydrogen sulfide, and the rest was only carbon dioxide. During the earlier experiment in 2011 and during 2012 the smell of H2S got offensive periodically and apart from that, concentrations above 1000 ppm are toxic. Previous research, Bottom ash for biogas upgrading, BABIU, shows that bottom ash from municipal solid waste incinerator (MSWI) can effectively reduce CO­­2 and H2S contents of landfill gas. Bottom ash from MSWI can be utilized in upgrading landfill gas and reduce odor problems of landfills with high H2S production. In this study, an area of 15m x 12m was covered with weathered slag from bottom ash with thickness of about 30cm, to examine how this layer can reduce the concentrations of H2S and CO2. Gas samples were taken from depths of 10cm and 15cm below the surface of bottom ash. There were also samples taken from around the slag-covered area. The surface was laid out 5 days before the first measurement was performed. The experiment was carried out for 20 days, 5, 7, 11, 13, 18 and 20 days after establishment of the surface with bottom ash. The intensity of emissions in different parts of the landfill varied from time to time, due to compacting and changing the permeability of the surface, and it shows that LFG flow in the Sofielund is near the lowest limit of it. Considering the results from the tests in 2011 in deep wells, the recent measurements done in this study showed low contents of LFGs. The highest contents of LFGs in the measurements belong to a pipe, which was found in the waste area of the landfill. Those highest contents of LFG were 15.1% methane, 12.1% carbon dioxide, 0.4% oxygen and the hydrogen sulfide did not exceed 2 ppm. This shows that in deeper depths concentrations of LFG is higher than that of the surface and 10cm below the surface. In the slag covered area CO2 content increased day by day from the first day of the measurement to the last day due to carbonation of the slag and its role in CO2 sequestration.  According to the recent measurement, it can be suggested to cover the landfill with a layer of slag as a construction material, to minimize the LFG emissions and the bad smell from H2S. Therefore it can eliminate direct emissions of LFG to the atmosphere by diffusion through the slag layer. This diffusion allows adsorption of CO2 and oxidation of H2S.
473

Inkluderandet av hållbarhetsarbete inom byggprojekt och dess relation till projektframgång : En kvalitativ studie om relationen mellan hållbarhetsarbete och projekt

Eriksson, Elin, Jähle, Josefine January 2021 (has links)
Title: The inclusion of sustainability in construction projects and its relation to project success: a qualitative study of the relationship between sustainability and projects. Level: Student thesis, final assignment for Bachelor Degree in Business Administration  Author: Elin Eriksson and Josefine Jähle Supervisor: Emilia Kvarnström Date: 2021 - June  Aim: Previous research draws attention to the negative connection between integrating sustainability into projects with a focus on long-term sustainability goals as opposed to short-term traditional project goals. Therefore, researchers suggest that more empirical studies should be conducted in the subject. The purpose of the study is to create an increased understanding of the relationship between sustainability and projects through the research questions “How is sustainability included in projects?” and “What is the perceived relationship between sustainability and project success?”.  Method: To achieve the purpose of the study, a qualitative method has been used in the form of six semi-structured interviews with project managers and people with different sustainability positions within Swedish construction companies. The collected data has been transcribed and coded into recurring themes which were analyzed through a content analysis.  Result & Conclusions: The study shows that the customer for the projects can act as an opening or barrier for how sustainability is included within projects. The results also show that the entire supply chain can influence the inclusion of sustainability. According to this study, the relationship between sustainability work and project success is difficult to determine, which is explained by the fact that sustainability is actually a part of project success. Thus, the study has resulted in the model “The Sustainable Iron Triangle”.  Contribution of the thesis: This study has contributed to an increased theoretical understanding of the relationship between sustainability and projects, but also provides an empirical basis on whether sustainability is included in projects and its relation to project success. This study has developed the model The Iron Triangle into The Sustainable Iron Triangle which better reflects today's assessment of project success.  Suggestions for future research: Future studies are recommended to carry out similar surveys regarding construction companies outside Sweden or to examine the customer's perceptions regarding the inclusion of sustainability in projects. What also would be interesting is to test The Sustainable Iron Triangle in an industry other than the construction industry to examine the relevance of the model in another context.  Key words: Project, Sustainability, Project Management, Triple Bottom Line, Project Success, The Iron Triangle.
474

Implementation of Technology in Warehouse Operations : A case study on internal logistics in warehouses from a sustainable perspective

Rylander, Lisa, Olofsson, Frida January 2021 (has links)
No description available.
475

The role of sustainable purpose in today’s entrepreneurship : An empirical study

Heindl, Lilly, Hies, Pascal January 2021 (has links)
Purpose of the study. This thesis deals with the role of sustainable purpose in the formation of sustainable start-ups. It aims to determine if sustainable purpose was a reason to start a company, what caused the emergence of sustainable purpose within the entrepreneurs, and how this purpose can benefit the enterprise. The study design. The study first defines sustainable purpose by juxtaposing selected concepts, models, and frameworks that aim to harmonize doing business and positive contribution to the planet and people. Based on that, we conducted semi-structured interviews with founders of sustainable start-ups (N=9). These were analysed via a qualitative content analysis and cross evaluation. Major findings. The findings were divided into six major categories. Interviewees contributed knowledge and opinion about their founding motivations, their source of sustainable purpose, how sustainable purpose benefits their business, what their view on sustainability is, what they criticise about today’s business world, and what the characteristics of themselves and their business are. Summary of interpretation. The collected data suggests that sustainable purpose was a reason for entrepreneurs to start a business that positively impacts society and the planet. Impactful life events influenced entrepreneurs to think critically about doing business and contributing to a better world. These impactful life events can be identified as the source of sustainable purpose within entrepreneurs. Lastly, entrepreneurs did identify benefits of having a sustainable purpose.
476

The relationship between strategic management practices (SMPs) and the financial performance of multinational corporations (MNCs) in emerging markets

Chinembiri, Petsmaster 04 April 2011 (has links)
Emerging markets (EMs) contribute significantly year-on-year to global gross domestic product (GDP) and continue to offer developed countries huge opportunities such as raw materials and readily available markets for various goods and services produced in developed economies. However, multinational corporations (MNCs) from developed markets operating in emerging countries continue to develop inappropriate perceptions and assumptions influenced by Western imperialist and arrogant attitudes, which carry a very short-term view on the future of developing countries, despite extracting multibillion-dollar profits from these regions. The objectives of the research study were to establish the relationship between strategic management practices (SMPs) and the financial performance of MNCs in emerging markets, by testing, validating the viability and applicability of the SMPs framework and by evaluating SMPs financial contribution to the bottom-line of MNCs. The research study found that for MNCs with comprehensively adopted and implemented the SMPs framework their financial performance continues to improve year on year, depicting a positive relationship between SMPs and overall financial performance of MNCs with business interests in emerging markets. The study, however, concludes that the MNC executives wrong assumptions about emerging countries results in the crafting of strategies within business models that fail to fit in emerging markets. Copyright / Dissertation (MBA)--University of Pretoria, 2010. / Gordon Institute of Business Science (GIBS) / unrestricted
477

Entrepreneurship in Sub-Saharan Africa : Achieving impactful local outcomes through partnerships

Schreurs, Zoë, Allgén, Agnes January 2021 (has links)
Governments at the bottom of the pyramid are putting an increasing amount of trust inthe private sector to help build infrastructure and alleviate poverty. Therefore, finding better ways to support local entrepreneurial initiatives is crucial. Corporations and organisations alike are starting BoP initiatives to help with these challenges, yet knowledge of how these challenges can best be solved remains underdeveloped. It is suggested that creating shared value through partnerships between corporations and the BoP can help alleviate poverty as well as benefit the corporation. In sharing knowledge and resources with the BoP, corporations can also help develop the entrepreneurial ecosystem in BoP regions. Research regarding entrepreneurial ecosystems in the BoP or the workings of partnerships within BoP markets such as the Sub-Saharan African BoP is scarce. Through a thematic study of perspectives on entrepreneurship and partnerships from three different stakeholder groups active in the Sub-Saharan African BoP market, this study seeks to add to the existing body of literature on entrepreneurial ecosystems and partnerships in BoP markets. Our findings suggest that partnerships between entrepreneurs and corporations could help mitigate some ofthe challenges entrepreneurs face, provided the stakeholders have shared goals and commitment to achieve impactful and mutually beneficial results. Currently, these goals appear to be slightly misaligned.
478

Vnější dimenze sociálního pilíře CSR ve Škoda Auto : aktivity firmy a místní komunita / External Dimension of CSR Social Pillar in Škoda Auto

Šindelková, Anna January 2013 (has links)
The thesis External dimension of CSR social pillar in Škoda Auto: company's activities and local community deals with the company's activities, which have an impact on the community of Mladá Boleslav. Particular focus is given to external dimension of social pillar of CSR. However the other activities, which are not declared as part of CSR.but have some impact on the local community, are also described in the thesis. One of the main goals of the thesis is to find out how the local NGOs percieve these activities and if they are trying to actively influence the CSR strategy of the company. The research is based on contemporrary theories in CSR, moreover the concept of cross-sectoral partnership is used. The output of the thesis is the evaluation of external dimension of CSR social pillar in Škoda Auto and proposal of new strategy, based on the collaboration with the local stakeholders using the topics suitable to cross-sectoral partnership.
479

Diseño causal de sistema piramidal para aprendizaje colaborativo de los lenguajes de programación

Rosa de Rivera, Verónica Idalia 21 July 2021 (has links)
Esta tesis doctoral ha provocado un cambio de actitud y mentalidad; porque la forma de realizar investigación hasta el momento había sido basada en resultados, es decir, primero se piensa cual será el resultado que se obtendrá o hacia donde se debe llegar, que es lo que se va a producir, utilizando en este caso el método de abajo hacia arriba (bottom up). Sin embargo, este informe se ha realizado bajo una metodología causal, es decir, interesa conocer primeramente cual será el modelo para luego contestar preguntas ¿qué es? y ¿para qué es?, debido a que así se decide un modelo que servirá de marco a la solución y se concretan los objetivos, ya sin ambigüedad, que se persigue alcanzar. Posteriormente se irán contestando las preguntas de ¿cómo?, ¿cuándo? y ¿quién lo hará? Porque así se establece la estructura de la solución, la tecnología que la soportará, y el contexto. Por esa razón, este trabajo aborda aspectos diferentes a las formas tradicionales de resolver un problema en particular, sobre el cual ya se conocen otras soluciones. El método bottom-up puede utilizarse cuando se conoce de antemano la solución por otros casos parecidos; y el top-down es el método general cuando no se tiene mayor conocimiento previo sobre cuál puede ser la solución. De allí que para esta investigación se ha hecho uso del método top-down. Por lo tanto, el grado de Doctora permitirá, resolver problemas haciendo uso de método científico, procurando evitar incorporar arbitrariedad o reduciendo esta a su mínima expresión y, con ello, garantizando la calidad de la solución. Se persigue producir un avance en el estado del conocimiento, en el caso particular de la educación piramidal en el que se ha trabajado bajo un enfoque colaborativo jerarquizado, para la enseñanza de los lenguajes de programación, a través de una plataforma didáctica virtual, en la cual personas con un nivel de educación superior pueden tutorar a otros de nivel educativo inferior para, de esa manera, poder mejorar el proceso de enseñanza-aprendizaje en la Universidad Tecnológica de El Salvador, aunque cabe mencionar que este proyecto podrá ser aplicado a cualquier institución educativa ya sea formal o informal. El objetivo principal es que mediante la educación piramidal y por medio del uso de una plataforma virtual, se pueda dar apoyo en el aprendizaje de cualquier área del conocimiento, que en el caso particular se abordarán los lenguajes de programación, por ser parte fundamental de las carreras de Informática y del área de competencia docente de la autora.
480

TJÄNSTEPERSONENS HANDLINGSUTRYMME -En studie om tjänstepersonens handlingsutrymme på lokalpolisnivå

Goczkowska, Ewa January 2020 (has links)
Since January 1, 2015, the police authority's largest organizational reform took place, and 21 county police authorities were merged into one unified police authority. The purpose of this was to increase the prerequisites for a stronger operating result with higher quality in the efforts. In connection with the reorganization, they sought to have a more distinct management where the operations would be employee driven. In this study, the official's space for action is studied, and to what extent the public works are considered regarding the expertise and knowledge of the employees at local police level. Through an interview study the officials of the local police level shared the experiences and how the reorganization's impact on the space of action has affected their ability on making decisions. The analysis of the study takes the biggest inspiration from Lisky's street-level bureaucracy theory but also shows elements of the authority's structure, i.e. top-down and bottom-up perspective. The study also takes into account the public officials’ tools of power and analyzes the exercise of power.

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