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  • 451.
    Zaman, Atiq Uz
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE).
    Comparative study of municipal solid waste treatment technologies using life cycle assessment method2010Inngår i: International Journal of Environmental Science and Technology, ISSN 1735-1472, Vol. 7, nr 2, s. 225-234Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The aim of the study is to analyze three different waste treatment technologies by life cycle assessment tool. Sanitary Landfill, Incineration and gasification-pyrolysis of the waste treatment technologies are studied in SimaPro software based on input-output materials flow. SimaPro software has been applied for analyzing environmental burden by different impact categories. All technologies are favorable to abiotic and ozone layer depletion due to energy recovery from the waste treatment facilities. Sanitary landfill has the significantly lower environmental impact among other thermal treatment while gases are used for fuel with control emission environment. However, sanitary landfill has significant impact on photochemical oxidation, global warming and acidification. Among thermal technology, pyrolysis-gasification is comparatively more favorable to environment than incineration in global warming, acidification, eutrophication and eco-toxicity categories. Landfill with energy recovery facilities is environmentally favorable. However, due to large land requirement, difficult emission control system and long time span, restriction on land filling is applying more in the developed countries. Pyrolysis-gasification is more environmental friendly technology than incineration due to higher energy recovery efficiency. Life cycle assessment is an effective tool to analyze waste treatment technology based on environmental performances.

  • 452.
    Zanki Alujevic, Vlasta
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik.
    Energy use and environmental impact from hotels on Adriatic Coast in Croatia: current status and future possibilities for HVAC systems2006Doktoravhandling, monografi (Annet vitenskapelig)
    Abstract [en]

    This thesis analyses a specific type of energy usage system, “energy usage in hotels”, and how this system behaves. In order to evaluate the current state of energy use in hotels, an energy audit questionnaire was developed and conducted among 31,5% of hotels on the Adriatic coast. The energy audit was used as a tool to set a benchmark for energy consumption in hotels and to identify opportunities for increased energy efficiency measures in HVAC systems. The analysis has shown that the average energy consumption in hotels on the Adriatic coast is in the range of 159 to 180 kWh/m2 and 162 to 225 kWh/m2 for seasonal and non seasonal hotels respectively. In order to establish a relationship between different independent variables in the hotels (total floor area and number of rooms) and dependent variables, such as electricity and oil consumption, mathematical statistical methods, such as correlation and regression analysis, were implemented.

    The objective of this thesis was also to develop - from an energy, environmental and economical points of view - a methodology for the design and retrofit of HVAC systems in the hotels on the Adriatic coast. The methodology named HOTECO is based on a system thinking approach. With respect to the technological aspects, the first step was to analyse conventional HVAC system designs and to compare it with the three most promising alternative HVAC systems utilizing renewable energy sources for a typical hotel. Computer modelling in TRNSYS was used to assess energy consumption. TRNSYS software has been used for simulations for a number of years, is internationally recognized, and has been validated and verified.

    It was concluded that energy and environmental savings in hotels on the Adriatic coast could be achieved using readily available technologies. The HOTECO methodology also demonstrated a framework that supports decision making iv regarding system selection and operational strategies to limit environmental impact from HVAC systems in hotels. Four scenarios for energy consumption in hotels on the Adriatic coast with regards to current state of energy systems and improved retrofit solutions utilizing renewable energy source were given.

  • 453.
    Zapico, Jorge L.
    et al.
    KTH, Skolan för datavetenskap och kommunikation (CSC), Medieteknik och interaktionsdesign, MID. Skolan för datavetenskap och kommunikation (CSC), Centra, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Brandt, Nils
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekologi (flyttat 20130630).
    Turpeinen, Marko
    KTH, Skolan för datavetenskap och kommunikation (CSC), Medieteknik och grafisk produktion, Media (stängd 20111231).
    Environmental Metrics The Main Opportunity from ICT for Industrial Ecology2010Inngår i: Journal of Industrial Ecology, ISSN 1088-1980, E-ISSN 1530-9290, Vol. 14, nr 5, s. 703-706Artikkel i tidsskrift (Fagfellevurdert)
  • 454.
    Zapico, Jorge Luis
    Skolan för datavetenskap och kommunikation (CSC), Centra, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC. Linnaeus University, Sweden.
    Blinded by data: The risks of the implicit focus on data in ICT for Sustainability2014Inngår i: Proceedings of the 2014 conference ICT for Sustainability, Bokförlaget Atlantis, 2014, s. 148-154Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Sustainability is a normative concept, building on ideas such as justice, equity and responsibility, and based on human culture and society. Computers, internet, and the technologies that are central in our network society embed also normative values and are part of a cultural context. But the work looking at computer technologies and sustainability has been mostly oriented towards either calculating the impact of technology or using technology as a tool for solving practical problems. ICT is seen as a neutral system to be used or study, while the more normative aspects are mostly overlooked. This paper explores some of the problems arising from these overlooked normative values, such as focusing only on quantifiable problems while forgetting other aspects that may be as important but not easy to put in numbers, or trusting too much in numbers while hiding assumption and model choices. This paper suggests that more critical reflection on these questions is needed in the research area, as well as developing more connections with existing research on these topics in more traditional disciplines.

  • 455.
    Zetterberg, Andreas
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Mark- och vattenteknik.
    Network Based Tools and Indicators for Landscape Ecological Assessments, Planning, and Design2009Licentiatavhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Land use change constitutes a primary driving force in shaping social-ecological systems world wide, and its effects reach far beyond the directly impacted areas. Graph based landscape ecological tools have become established as a promising way to efficiently explore and analyze the complex, spatial systems dynamics of ecological networks in physical landscapes. However, little attention has been paid to making these approaches operational within ecological assessments, physical planning, and design. This thesis presents a network based, landscape-ecological tool that can be implemented for effective use by practitioners within physical planning and design, and ecological assessments related to these activities. The tool is based on an ecological profile system, a common generalized network model of the ecological infrastructure, graph theoretic metrics, and a spatially explicit, geographically defined representation, deployable in a GIS. Graph theoretic metrics and analysis techniques are able to capture the spatio-temporal dynamics of complex systems, and the generalized network model places the graph theoretic toolbox in a geographically defined landscape. This provides completely new insights for physical planning, and environmental assessment activities. The design of the model is based on the experience gained through seven real-world cases, commissioned by different governmental organizations within Stockholm County. A participatory approach was used in these case studies, involving stakeholders of different backgrounds, in which the tool proved to be flexible and effective in the communication and negotiation of indicators, targets, and impacts. In addition to successful impact predictions for alternative planning scenarios, the tool was able to highlight critical ecological structures within the landscape, both from a system-centric, and a site-centric perspective. In already being deployed and used in planning, assessments, inventories, and monitoring by several of the involved organizations, the tool has proved to effectively meet some of the challenges of application in a multidisciplinary landscape.

  • 456.
    Zhang, Chi
    et al.
    KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Energiprocesser.
    Campana, Pietro Elia
    KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Energiprocesser. School of Business, Society and Engineering, Mälardalen University, Västerås, 721 23, Sweden.
    Liu, C.
    Wang, K.
    Zhang, Yang
    KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Energiprocesser.
    Yan, Jinyue
    KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Energiprocesser. School of Business, Society and Engineering, Mälardalen University, Västerås, 721 23, Sweden.
    Purchase Intention for Crowd-funded Milk Products with Integrated Photovoltaic Water Pumping Systems in China2019Inngår i: Renewable Energy Integration with Mini/Microgrid, Elsevier, 2019, Vol. 159, s. 503-508Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In comparison with current financing mechanisms for renewable energy systems, crowd-funding financing mechanism offers a new potential source of financing with recent use of social media. Crowd-funding financing mechanism can also increases the social supports for renewable energy systems as users and investors turn to be more actively engaged in energy systems. As a new potential source of financing, crowd-funding mechanism has different forms, including donation, lending, equity and product reward approaches. In this paper, discrete choice model was used to explore whether crowd-funding financing with a novel sociotechnical product reward practice, has the attractions for potential customers to pay for a more sustainable milk product with distributed photovoltaic (PV) system. We empirically investigated the reward-base crowd funding with the specific integrated photovoltaic water pumping (PVWP) system in dairy milk production in China. 48 in-depth interviews were adopted for qualitative analysis of determinants of customer milk purchase decision. The ordered probit regression was employed with 357 online surveys to systematically estimate the purchase intention for the online-crowd-funding sustainable milk. Customer behaviours, environmental consciousness, and the individual socio-demographic factors were tested as potential explanatory variables. In the survey and depth interview samples, we found interviewees as potential customers showed strong purchase intentions to the crowd funding dairy milk for noticing milk quality and nutritious improvement, emission reduction and environmental benefits by the integrated PVWP system. In our findings of the regression results, the females, customers with young children or planning to have children were found with higher willing to purchase than other customers for crowd funding the sustainable dairy milk. The familiarity and popularity with online shopping and pre-sale purchase in China made customers more open and active towards pre-pay and crowd-funding mechanism.

  • 457. Zhang, X. -M
    et al.
    Cao, W. -H
    Yu, X. -X
    Wu, Sihong
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Mark- och vattenteknik (flyttat 20130630).
    Effect of LUCC on runoff regulation in watershed in loess gullied-hilly region of China2009Inngår i: Shuili Xuebao/Journal of Hydraulic Engineering, ISSN 0559-9350, Vol. 40, nr 6, s. 641-650Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    By using the measurement technique of dynamic hydrological process and the estimation method of landscape ecology, the effect of LUCC (Land Use-Cover Change) on runoff regulation in the Luoyugou watershed, located at loess gullied-hilly region of China, in the period from 1986 to 2004 was studied. The results show that the impact of LUCC on runoff regulation is significant due to the increase of forest vegetation coverage and terracing of the land on the slopes. The capacity of runoff yield will be reduced due to the optimal adjustment of land use structures and the increase of forest vegetation in any time scales, including single precipitation event, the period of rainfall season and in the whole year. The reduction percentages of average annual runoff coefficient in rich rainfall year, normal rainfall year and poor rainfall year in the latter land use period from 1995 to 2004 are approximately 51%, 85%, 84% respectively comparing with those in the former land use period from 1986 to 1994. Besides, if neglecting the influence of precipitation amount, the predicted runoff coefficient for latter period decreases by about 63% comparing with those in former period. In addition, the impact of LUCC on runoff exhibits seasonal characteristics and the peak flood amount decreases with the optimal adjustment of land use structures. Although the impact of increasing forest vegetation coverage on the capacity of runoff amount is lager than that of changing land use type from slopping farmland to terrace, both measures must be adopted for fulfilling the requirements of land resources sustainable utilization in Loess gullied-hilly region.

  • 458.
    Zhou, Guanghong
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Singh, Jagdeep
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Wu, Jiechen
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Sinha, Rajib
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Laurenti, Rafael
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Frostell, Björn
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Evaluating low-carbon city initiatives from the DPSIR framework perspective2015Inngår i: Habitat International, ISSN 0197-3975, E-ISSN 1873-5428, Vol. 50, s. 289-299Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Current low-carbon city initiatives were evaluated using the DPSIR (Drivingforces-Pressures-State-Impacts-Responses) causal-effect framework for investigating interactions between environmental issues and human activities. For effective management towards achieving a low-carbon city, integrating the pressure-based, driver-oriented DPSIR approach could help decision makers examine whether greenhouse gas (GHG) reduction approaches deal with the root causes of GHG emissions and work to-wards low-carbon city development goals. The DPSIR framework was used on 36 global cities to analyse the socio-economic dynamics of GHG emissions and their pressures on the environment, the state of the environment, related climate change impacts and responses from society. The results indicated that numerous cities have awareness of low-car bon plans and that most of these plans are pressure-based and driver-oriented. Most city plans recognise energy, transportation and building as the main driving forces for GHG emissions, which cause environmental pressures, and highlight technical responses to reduce GHG emissions pressures from these root causes. Inaddition, most plans recognise institutional and cognitional responses to low-carbon city development, such as: policies and legislation; departmental planning and cooperation; measuring, monitoring and reporting performance; capital invest-ment; community education and outreach; and stakeholder involvement.

  • 459. Åberg, A.
    et al.
    Höffken, J.
    Lidström, Susanna
    Filosofi och historia, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Filosofi och teknikhistoria, Historiska studier av teknik, vetenskap och miljö.
    Looking for perspectives! EU energy policy in context2018Inngår i: Advancing Energy Policy: Lessons on the Integration of Social Sciences and Humanities, Springer International Publishing , 2018, s. 47-59Kapittel i bok, del av antologi (Annet vitenskapelig)
    Abstract [en]

    Transitioning to less carbon-intensive energy systems involves making difficult choices and priorities. This chapter imagines three individuals who are affected in different ways by EU energy policy. Their fictional stories illustrate that energy policies are embedded in social, historical and cultural practices and need to take a broader perspective than either technological fixes or a narrowly defined goal of low or zero carbon emissions to be fair and effective. We argue that this is often not reflected in the EU's energy policy frameworks, and use the Energy Roadmap 2050 to demonstrate our point. Contrary to the impression given by the roadmap, a narrow technocratic empirical basis for a policy is not enough to define and solve an energy problem. Energy issues are societal problems and need to be addressed as such.

  • 460.
    Åkerman, Jonas
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Samhällsplanering och miljö, Miljöstrategisk analys.
    Sustainable air transport - on track in 20502005Inngår i: Transportation Research Part D: Transport and Environment, ISSN 1361-9209, E-ISSN 1879-2340, Vol. 10, nr 2, s. 111-126Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this paper three 'Images' of air travel on a sustainable path in 2050 are outlined. The method used is backcasting. A stabilization of the carbon dioxide concentration in the atmosphere at 450 parts per million is assumed to constitute a sustainable level. It is concluded that a refinement of the conventional turbofan aircraft is probably not sufficient to reach even the less demanding target level, even though a 40% reduction of fuel intensity may be achieved. The introduction of more radical aircraft configurations, e.g. the flying wing, probably has the greatest potential for reducing fuel consumption, but the development of such aircraft is uncertain. A less risky strategy is to opt for a high-speed propeller aircraft with a cruise speed which is 20-25% lower than for a conventional turbofan aircraft. This configuration entails a 56% cut of carbon dioxide emissions per passenger-kilometre compared to 2000. If this technology trajectory is combined with a development characterized by a weakened emphasis on economic growth together with less hectic lifestyles, it may be possible to reach even the most demanding of the target levels. Air travel per capita in 2050 would then be slightly higher than in 2000. If only the less demanding target level is to be reached global air travel per capita may be about 110% higher than in 2000.

  • 461. Östberg, Katarina
    et al.
    Hasselström, Linus
    Håkansson, Cecilia
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Samhällsplanering och miljö, Miljöstrategisk analys.
    Non-market valuation of the coastal environment - Uniting political aims, ecological and economic knowledge2012Inngår i: Journal of Environmental Management, ISSN 0301-4797, E-ISSN 1095-8630, Vol. 110, s. 166-178Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this paper, we examine the feasibility of using an approach for estimating Willingness-To-Pay for marine environmental improvements, based on a holistic, policy-determined scenario. Conducting valuation studies based on a policy-determined scenario is beneficial for decision-makers in terms of practical applicability but also for research in terms of e.g. data availability. Using a case study in two Swedish coastal areas, we examine whether respondents are able to understand and attach a monetary value to these types of scenarios. The tested scenarios are based on improving water quality according to the EU Water Framework Directive and reducing noise and littering according to standard-type measures in a Swedish archipelago setting. The results are promising, paving the ground for future valuation studies using this approach. However, there might be tradeoffs, since the use of scenarios like this require much preparation by researchers and much efforts by respondents. We recommend environmental managers to adopt this approach when possible, but to have these potential tradeoffs in mind. Mean monthly WTP per household for the water quality improvement scenario is estimated to 71 and 102 SEK1 in the two study areas, respectively. The corresponding numbers for the less noise and littering scenario are 38 and 46 SEK. Valuation of noise and littering in archipelago areas has previously not been very common, making these estimates especially important for marine policy.

  • 462.
    Kordas, Olga ()
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Lazarevic, David ()
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Linn, Gunnar ()
    Linnkonsult.
    Strategic Innovation Agenda for Smart Sustainable Cities2015Rapport (Annet vitenskapelig)
  • 463.
    Kordas, Olga ()
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Lazarevic, David ()
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Linn, Gunnar ()
    Linnkonsult.
    Strategisk innovationsagenda för Smarta hållbara städer2015Rapport (Annet vitenskapelig)
78910 451 - 463 of 463
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