• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 376
  • 331
  • 69
  • 50
  • 20
  • 20
  • 10
  • 9
  • 8
  • 5
  • 4
  • 3
  • 3
  • 2
  • 2
  • Tagged with
  • 1030
  • 1030
  • 302
  • 291
  • 250
  • 179
  • 168
  • 144
  • 137
  • 121
  • 110
  • 109
  • 102
  • 81
  • 80
  • 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.
361

The Management of CSR within the plastic industry : A study of plastic producing companies within the Gnosjö region in Sweden / Ledningen av CSR inom plastindustrin : En studie av plastproducerande företag inom Gnosjöregionen i Sverige

Avramidou, Sara, Tellstedt, Maria January 2020 (has links)
Background: The matter of Corporate Social Responsibility (CSR) has more and more become a topic of interest today. As the concept has gained attention, the emphasis on its different concepts has shifted from the focus lying on the social responsibilities, to being more about the environmental responsibilities and impact of companies. Although the attention put on CSR and the environment has increased, an increase in the amount of plastic waste is still seen in the world. In Sweden, corporations accounts for as much as 50% of the total amount of plastic waste every year.   Purpose: The purpose of this thesis is to analyse the management of environmental Corporate Social Responsibility in plastic producing companies, specifically the management of CSR within the Gnosjö region in Sweden   Method: This qualitative study involves multiple case studies primarily based on semi-structured interviews with managers of plastic producing companies in the Gnosjö region of Sweden.   Findings: The study showed that plastic companies are challenged in several ways, like re-using their production waste, caring for their employees, switching to more sustainable energy sources, and adhering to sustainable standards. Thus, companies’ goals are required to satisfy environmental demands by positioning their CSR-work towards customers’ environmental needs.   Conclusion: This thesis conclude that companies’ have different views on the meaning of CSR. It was found that sales and profit were the main motivators of adopting CSR practices, followed by some ethical aspects. Companies will continue to experience an increased demand for recycled plastics and that the importance of CSR will persistently grow. New knowledge demands the development of new materials and better strategies for recycling.
362

City of Denton Municipal Solid Waste Characterization and Management Strategies

Brady, Patricia D. 05 1900 (has links)
Due to concern about diminishing landfill space, the City of Denton contracted a municipal solid waste characterization study in 1999 that would identify materials for diversion. This paper describes the results of 5 1-week waste sorting events, a scale-house analysis, a recycling participation study, a recycler profile and a similar city study. The results of the characterization studies suggest that at least 50% of each waste stream is recyclable or divertible though paper products accounted for no more than 45% by weight of any waste stream. Curbside recycling participation rate was 71% during the 6-week study period though the average weekly set-out rate was 37%. Recycling participation rates varied significantly by zip code and by home value categories but not by gender. Denton is fairly progressive in its waste management approach when compared to demographically similar cities on a 15-question assessment though recommendations for improvement have been identified.
363

Recycle Right: Designing Tools for Resource Responsible Consumers

Debrecht, Sebra M. 28 June 2021 (has links)
No description available.
364

Analýza produkce obecního odpadu / Municipal Waste Production Analysis

Švarc, Vít January 2018 (has links)
Thesis analyses the current state of waste management of Czech Republic and the issue of production of various kinds of waste. Real data about production and composition of waste flows of Jihlava have been used. In addition, thesis evaluates the impact of local conditions on production of isolated constituents of municipal waste within the town. Influences such as density of population, housing development or form of heating have been monitored. A method on the town level for estimation and evaluation of production of municipal waste is designed in the thesis. Tools such as descriptive statistics, correlative analysis or association rules are used.
365

Reverzní logistika ve vybraném podniku / The Reverse Logistics in Selected Company

Nečasová, Sára January 2020 (has links)
The thesis deals with reverse logistics in the manufacturing company German Motor Parts CZ, s.r.o. Based on the theoretical background, it carries out research and analysis of the company's activities from the logistics perspective. It examines reverse logistics activities, such as complaints and waste management, as well as conventional logistics activities from purchase to dispatch. The aim of the thesis is to suggest corrective measures that will lead to an improvement of reverse logistics in the company.
366

Komplexní modely svozu odpadů / Complex Waste Collection Models

Nevrlý, Vlastimír January 2020 (has links)
The subject of this doctoral thesis is the solution of logistics systems in the context of waste management. The work begins with an extensive research in the field of modelling various situations from the waste transportation chain. There are presented multiple types of practical tasks in the area of operation research applicable to waste management. Their possibilities of extension and modification are analysed for use by investors, technical services or waste collection service providers. An essential part of the work is the identification of critical parameters in the waste collection at the level of municipalities and micro-regions. Based on practical requirements, challenges related to the improvement of decision-making and planning systems are defined. The available techniques proved to be insufficient for practical problems. For the area of changes and designs of collection systems (design and modification of routes, choice of the vehicle fleet, collection plan, etc.) there are no procedures that would include a whole range of operating conditions and parameters. The boundary conditions of the task affecting fundamental requirements are highly variable. The thesis presents a comprehensive approach, which is divided into several phases. The preparation and analysis of input data focused mainly on the creation of transport infrastructure, allocation of waste collection containers and their pairing to the network, which also reduces the size of the task. Furthermore, a procedure for compliance with the rules of the road was designed using a penalty function, and an algorithm for defining imaginary edges was implemented, which will allow distinguishing the frequency of collection on selected network segments. To reduce the size of the task, a segment clustering algorithm was also designed, which will enable the calculation of the collection even for larger areas. Input parameters related to operating time and fullness of collection containers are elaborated in greater detail, as they most influence the results of the task. A great benefit is also the algorithm generating the initialization solution from historical routes. As part of the related publishing activities, environmental criteria were defined to evaluate global and local impacts of waste transportation and treatment. The outputs of the thesis are used primarily for the analysis of collection systems, to support the deployment of waste containers, planning collection routes, time schedules and dimensioning the size of the vehicle fleet. The proposed algorithms were tested in several case studies, which proved the broad applicability of a comprehensive tool in the field of waste logistics. Although the thesis is focused on modelling the collection of municipal waste, the usability of the implemented procedures is possible in other areas of waste management or other sectors.
367

Koncepce nakládání s infekčním odpadem na regionální úrovni / Infectious waste management at regional level

Martinek, Karel January 2021 (has links)
Současná pandemická situace ukázala obrovské dopady rozšíření infekce na společnost, i přesto stále ještě chybí jednotný přístup k problematice infekčního odpadu. Cílem této práce je představení metodiky nakládání s infekčním odpadem v rámci regionu v kontextu situace v Česku a Evropské Unii. V teoretické části práce je uveden legislativní rámec, charakter produkce, možnosti dekontaminace a podmínky spalování infekčního odpadu. Na základě těchto poznatků je navržena metodika pro nakládání s infekčním odpadem v rámci regionu. V praktické části práce je pak metodika aplikována na konkrétní region – Královéhradecký kraj. V rámci metodiky jsou navrženy možné scénáře nakládání s infekčním odpadem a vybrány nejvhodnější z nich z pohledu zdravotních rizik, rozpočtové zátěže a dopadu na životní prostředí. Na závěr je metodika kriticky zhodnocena a srovnána s metodikami jiných studií na podobné téma.
368

Posouzení informačního systému firmy a návrh změn / Information System Assessment and Proposal for ICT Modification

Zálešák, Jiří January 2016 (has links)
This master´s thesis cointains analysis of company Skládka Hraničky spol. s r.o. and following proposal and modification in relation with the information system. The analysis is based on HOS 8 method, doc. Ing. Miloš Koch CSs. is still impoving it at the faculty of business and management at Brno University of technology. Conclusions from this analysis show us weaknesses of the company, which we should eliminate in the last kapitol.
369

Právní úprava přeshraniční přepravy odpadů / Legislation on transboundary shipments of waste

Průchová, Hana January 2020 (has links)
1 Abstract Legislation on transboundary shipments of waste This thesis focuses on the legal regulations of transboundary shipments of waste. The aim of the thesis is a comprehensive and systematic summary of the current legislation on cross-border shipments of waste in Czech Republic and an explanation of its individual institutes and regimes based primarily on Regulation No. 1013/2006 and Act No. 185/2001 Coll., on waste. The first chapter is dedicated to the historical development of regulation at the international level, where the Basel Convention and OECD Decision on the Control of Transboundary Movements of Waste Destined for Recovery Operations are discussed in more detail, as well as the historical development of regulation at the European and national levels. The second and third chapters are dedicated to the current legislation, which first defines the individual basic terms and entities used across the regulation and then analyzes the various types and regimes of transboundary shipments of waste. The fourth chapter deals with the function and position of administrative bodies involved in the control and supervision of transboundary shipments of waste. The last chapter deals with the illegal activity and legal liability arising from it in the cross-border movements of waste, there are also cases of...
370

Exploring the potential for local end-processing of e-waste in South Africa

Sadan, Zaynab 29 January 2020 (has links)
E-waste is one of the fastest-growing waste streams in the world, and South Africa (SA) is no exception. This is driven by increased consumer demand and access to electrical and electronic equipment, in addition to perceived equipment obsolescence, and rapid advancements in technology. E-waste recycling presents an opportunity in providing a source of secondary resources such as metals, plastics and glass, as well as employment and economic opportunities in both developed and developing countries. Furthermore, the diversion of this waste stream from landfills or dumps prevents additional land use and the potential negative impacts on human health and the environment. E-waste collection and upgrading is a relatively small-scale but growing industry in SA. Only 12% of e-waste generated was estimated to be recycled in 2015. Most of SA’s ewaste volumes are inaccessible due to lack of formal take-back schemes, lack of consumer awareness, as well as e-waste being kept in storage or disposed of in landfills. E-waste recyclers in SA generally carry out collection, dismantling and sorting, refurbishing, as well as pre-processing of value fractions. There is currently limited local end-processing capacity, therefore partially upgraded value fractions are prepared for export, while non-viable fractions are stockpiled or disposed of in local landfills. The business case for local end-processing of e-waste value fractions, particularly metals, does not seem feasible due to the inconsistent and insufficient volumes available. Furthermore, SA faces unique socio-economic challenges such as an unregulated yet well-established informal sector. Additionally, the legal framework presents many inhibitors for e-waste recyclers. This research study builds upon the knowledge that there is a limited understanding of the feasibility of existing e-waste end-processing technologies for implementation in the South African socio-economic and legislative context. Therefore, this research intends to find out what are the key barriers and enablers to implementing e-waste end-processing technologies in SA. Qualitative research methods were used to uncover the current challenges faced by local recyclers and other stakeholders in the value chain. The data collection thus took the form of interviews, site visits and desktop research. The findings show that the e-waste recycling industry in SA is undergoing many new developments in terms of research and investment interest, as well as the anticipated outcomes from the recent submissions of Industry Waste Management Plans (IndWMP). The industry shows potential as an emerging secondary resource economy, however, the extent to which it will mature is dependent on the organisation of its collection network as well as the development of local end-processing and manufacturing capacity. The collection network and infrastructure are currently supported by both informal and formal recyclers who provide a diversity of collection strategies and a wide network of ewaste sources. However, efforts to increase recycling rates by accessing volumes in storage and increasing consumer awareness and engagement is necessary. Besides the economies of scale required to support the development of local end-processing, alternative technologies to large-scale smelting should be considered for the SA context. While this is seen through initiatives by SA Precious Metals, end-processing technologies is still inaccessible to small and medium recyclers due to cash flow issues as well as cherry-picking of high-grade materials. Therefore, recyclers require further support in terms of dealing with non-viable fractions. This includes research and investments into technologies and business models for the recycling of low-value materials including plastics, as well as subsidies for the cost of safe disposal or treatment of these fractions. Additionally, acquisition of product markets and an increase in manufacturing capacity is necessary to accelerate industry development. The legislative framework also poses limitations on recyclers in the e-waste value chain, stemming from the legal definition of e-waste as a liability as opposed to a resource. While the legislation is unlikely to change, provisions to relieve any legal barriers should be implemented. This includes permissions for pilot projects to test new technologies, as well as legal support for smaller recyclers in the form of consultancy as well as guidelines for sustainable waste management practices should be provided. Finally, while there are many challenges present in the e-waste recycling industry today, the IndWMP offers an opportunity for collaboration between key stakeholders, including the relevant government bodies. Plans have been submitted and the outcomes of approved plans will be revealed at the beginning of 2019. The plans offer solutions for recycling subsidies, increasing the collection and recycling rates, as well as investment into technology, research and enterprise development. However, successful implementation of these plans will only occur if integration and collaboration of the local e-waste community prevail over greed and the struggle for power.

Page generated in 0.0624 seconds