• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 427
  • 174
  • 165
  • 33
  • 28
  • 19
  • 14
  • 14
  • 14
  • 13
  • 11
  • 8
  • 3
  • 3
  • 2
  • Tagged with
  • 1125
  • 346
  • 267
  • 251
  • 211
  • 154
  • 130
  • 123
  • 122
  • 115
  • 104
  • 103
  • 103
  • 101
  • 101
  • 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.
651

Atributos de rede para pedestres com restrições de mobilidade em um modelo para avaliação da acessibilidade / Network attributes for pedestrians with mobility constraints in a model for accessibility evaluation

Suzana Andrade Valverde Lima Correia 17 April 2015 (has links)
Este estudo parte do pressuposto que os atributos qualitativos das vias para pedestres têm um impacto direto sobre os níveis de acessibilidade do local em que estas vias formam uma rede. A partir desta hipótese, o objetivo principal desta pesquisa foi incorporar medidas qualitativas na configuração da rede de vias de pedestres que compõem um modelo de acessibilidade, a fim de avaliar o impacto das mudanças propostas nos resultados do modelo. Um modelo multicritério para avaliação de acessibilidade, baseado em SIG, foi tomado como referência para as alterações propostas, que foram testadas em um estudo de caso desenvolvido no campus sede da Universidade Federal de Sergipe, Brasil. O estudo envolveu os seguintes procedimentos: coleta de dados; cálculo dos valores de acessibilidade com o modelo original; inserção de atributos qualitativos na rede do modelo e cálculo dos valores de acessibilidade após as mudanças; comparação dos resultados obtidos com os dois modelos; e avaliação dos níveis de acessibilidade relativa. Valores de acessibilidade relativa são obtidos a partir de uma comparação entre os resultados encontrados para os usuários com restrições de mobilidade e os resultados encontrados para usuários sem restrições de mobilidade. Os resultados confirmaram que as medidas qualitativas de vias para pedestres afetam os valores de acessibilidade, se comparados com os valores calculados com o modelo que considera apenas as distâncias entre origens e destinos como impedâncias. Além disso, a combinação dos efeitos da velocidade e da distribuição espacial dos destinos-chave fez com que os nós da rede mais distantes da região central apresentassem baixos índices de acessibilidade, apesar de em muitos casos pertencerem a segmentos de rede bem classificados na avaliação de qualidade realizada para o estudo. O grupo de deficientes visuais foi o mais prejudicado no caso estudado, o que de certa forma contraria o senso comum, de que os cadeirantes são os mais prejudicados em se tratando de acessibilidade. Este resultado é, no entanto, uma consequência direta da topografia do campus, que se situa em um terreno praticamente plano. Se não são criadas barreiras artificiais, o local é, em princípio, favorável a deslocamentos de cadeira de rodas. / This study is based on the assumption that qualitative attributes of pedestrians\' pathways have a direct impact on the accessibility levels of the site in which these paths form a network. Starting from this hypothesis, the main aim of this research was to incorporate qualitative measures in the configuration of a network of pedestrians\' pathways that form an accessibility model, in order to evaluate the impact of the proposed changes on the model outcomes. An existing GIS-based multicriteria accessibility model was taken as a reference for the proposed changes, which were tested in a case study developed at the main campus of the Federal University of Sergipe, Brazil. The study involved the following procedures: data collection; calculation of the accessibility values with the original model; insertion of qualitative attributes in the model network and calculation of the accessibility values after the changes; comparison of the results obtained with the two models; and evaluation of relative accessibility levels. Relative accessibility values were obtained from a comparison between the results found for users with mobility constraints and the results found for users without mobility constraints. The results confirmed that the qualitative measures of pedestrians pathways do affect the accessibility values, if compared to the values calculated with the model that considers only the distances between origins and destinations as impedances. Furthermore, the combination of walking speeds and spatial distribution of the key-destinations has produced low accessibility levels in the network nodes that are not close to the campus central area, even though they belong to links well classified in the quality assessment conducted for the case study. Also, the group of visually-impaired users had the worst accessibility conditions of all groups considered. This somehow contradicts the general assumption that wheelchair users constitute the group most affected by low accessibility conditions. This result is, however, a direct consequence of the flat topography of the campus. If no artificial barriers are created, the site is not, at least in principle, unfavorable to wheelchair displacements.
652

Demanda potencial para um sistema de compartilhamento de bicicletas pedelecs: o caso de um campus universitário / Potential demand for a pedelec sharing system: the case of a university campus

Leonardo Dal Picolo Cadurin 12 May 2016 (has links)
Este trabalho teve como objetivo analisar a demanda potencial para um sistema de compartilhamento de bicicletas pedelecs no campus da USP de São Carlos, com foco nos deslocamentos de estudantes entre as duas áreas do campus. Para tanto, foi elaborado um conjunto de procedimentos, que constituem duas etapas: caracterização do público-alvo e análise da demanda potencial pelas bicicletas pedelecs compartilhadas. Na primeira etapa foi aplicado um questionário, elaborado com a técnica de preferência declarada, para verificar as preferências dos usuários em relação às pedelecs compartilhadas e ao ônibus operado pela USP. Os resultados desta consulta, que envolveu variáveis de condições meteorológicas, situação de ciclovias/ciclofaixas entre as áreas do campus e lotação do ponto de ônibus USP, foram posteriormente utilizados para calibrar um modelo logit e treinar uma Rede Neural Artificial (RNA). Na segunda etapa foi elaborada uma planilha eletrônica com os dados obtidos na coleta, a fim de analisar as probabilidades de escolha da pedelec (ao invés do ônibus USP). Nesta planilha também foram utilizados dados do histórico meteorológico de São Carlos no período entre 2011 e 2015. Alguns dos resultados obtidos são destacados na sequência. A probabilidade de escolha das pedelecs é, em média, três vezes maior quando existem ciclovias/ciclofaixas (em relação à ausência da referida infraestrutura cicloviária). A ocupação do ponto de ônibus USP também é impactante, pois as probabilidades de uso da bicicleta pedelec praticamente dobram quando o ponto está cheio. No caso da meteorologia, foi constatado que as maiores probabilidades ocorrem no Outono e no Inverno, ou seja, nas épocas em que se concentram os dias mais secos e com menores temperaturas. Para o período letivo de 2011 a 2015, considerando a situação atual (isto é, sem ciclovias/ciclofaixas entre as áreas), os valores de probabilidade de uso da pedelec correspondem a 9% com o ponto vazio e 19% com o ponto cheio. Se houvesse ciclovias/ciclofaixas, a probabilidade seria de até 54%. Desse modo, a estratégia de análise desenvolvida conceitualmente, bem como implantada em planilha eletrônica, se constitui em importante ferramenta de auxílio para a condução da política de transportes que a Prefeitura do campus irá adotar para os anos futuros. Além disso, evidencia uma possível demanda potencial para um sistema com pedelecs compartilhadas. / The objective of this study was to analyze the potential demand for a pedelec sharing system at the São Carlos campus of the University of São Paulo (USP), aiming at the displacements of students between the two campus Areas. The set of procedures developed to reach the objective has involved two steps: characterization of the target audience and analysis of the potential demand for shared pedelecs. The first step was accomplished with a questionnaire designed with a stated preference approach for identifying users\' preferences regarding shared pedelecs and the bus system operated by the university. The survey results, which involved variables of weather conditions, existence of bike paths/bike lanes between the campus Areas, and occupancy rates at the USP bus stop, were subsequently used to calibrate a logit model and to develop an Artificial Neural Network (ANN). The survey data were also used in the second step of the process, in which an electronic spreadsheet was created to analyze the probabilities of choosing the pedelec alternative (instead of the bus route operated by university). The spreadsheet was also fed with meteorological data of São Carlos in the period between 2011 and 2015. Some of the obtained outcomes are highlighted in the sequence. The probability of a pedelec being chosen is almost three times higher if bike paths/bike lanes do exist than if they do not exist. The occupancy rates of the bus stop are also particularly relevant. The probability of someone choosing a pedelec nearly doubles when the bus stop is crowded. Regarding the weather conditions, the highest probabilities are observed in the Fall and Winter seasons, i. e. in the driest and coldest days. For the entire academic period comprised between 2011 and 2015, the probabilities range from 9% (empty bus stop) to 19% (full bus stop), considering the current situation (i. e. no cycleways connect the two campus Areas). In the presence of this cycling infrastructure, however, the probability goes up to 54%. Thus, the strategy of analysis conceptually developed, and made available through an electronic spreadsheet, may be an important support tool for the implementation of transport policies by the campus administration. In addition, it highlights a likely potential demand for a system of shared pedelecs.
653

Práticas de leitura nas mídias sociais: evidências de leitura dos graduandos do IF Goiano – Campus Urutaí / Reading practices in the social media: evidences of reading of the graduates of the IF Goiano - Campus Urutaí

Diniz, Johnathan Pereira Alves 04 December 2017 (has links)
Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2017-12-21T13:59:54Z No. of bitstreams: 2 Dissertação - Johnathan Pereira Alves Diniz - 2017.pdf: 3205404 bytes, checksum: f4cd7aff5b35c55a661a9fbb8f414841 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2017-12-21T14:00:14Z (GMT) No. of bitstreams: 2 Dissertação - Johnathan Pereira Alves Diniz - 2017.pdf: 3205404 bytes, checksum: f4cd7aff5b35c55a661a9fbb8f414841 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2017-12-21T14:00:15Z (GMT). No. of bitstreams: 2 Dissertação - Johnathan Pereira Alves Diniz - 2017.pdf: 3205404 bytes, checksum: f4cd7aff5b35c55a661a9fbb8f414841 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-12-04 / The practices of reading in social media were studiedevidenced by the graduating students of the undergraduate courses of the Federal Institute of Education, Science and Technology Goiano (IF Goiano) of Campus Urutaí in social media Facebook. The theoretical basis based on the history of reading in society, accompanied by the development of the media until today, with social media. Based on McLuhan's thinking that "the medium is the message", Facebook is configured with one of the main communication and interaction platforms, enabling a new way of reading, in which the reader also produces content to others readers. What evidence do these readings make in academic everyday life? Do the reading practices developed by these students on Facebook provide the search for other readings? To answer these questions, the study based on a qualitative approach, seeking answers to the research problem. The study also based on an exploratory research, trying to understand what the practices of reading these students on Facebook are. As a way of collecting data, the study divided into three phases. The first phase consisted of sending e-mail questionnaires to the research universe, trying to understand the importance of social media in the day to day of each student. In this questionnaire, the respondents indicated their interest in participating in the second phase of the research, which consisted of the on-site visit of the researcher to the Urutaí Campus, carrying out a structured interview, in which the habits and reading practices of these students on Facebook verified. With this data, we started with the third phase of the study that examined the profiles of the students studied, through reading trajectories, thus seeking the students' reading evidence in social media. The research aims to serve as an instrument in the teaching-learning process of the educational institution, combining social media with the academic context. It concluded that social media influences students' readings, but there is still a timid movement within the Urutaí Campus. Teachers and other employees of the institution must participate effectively in these environments, combining social media with the academic context, thus providing new teaching-learning perspectives. / Estudaram-se as práticas de leitura nas mídias sociais evidenciadas pelos estudantes concluintes dos cursos de graduação do Instituto Federal de Educação, Ciência e Tecnologia Goiano (IF Goiano) do Campus Urutaí na mídia social Facebook. A fundamentação teórica parte do histórico da leitura na sociedade, seguido com desenvolvimento dos meios de comunicação até à atualidade, com as mídias sociais. Apoiando-se na afirmação de McLuhan, de que o “meio é a mensagem”, o Facebook se configura com umas das principais plataformas de comunicação e interação, possibilitando uma nova forma de leitura, na qual o leitor também produz conteúdo a outros leitores. Quais evidências essas leituras fazem no cotidiano acadêmico? As práticas de leitura desenvolvidas por esses estudantes no Facebook proporcionam a busca por outras leituras? Para responder a esses questionamentos, o estudo se apoia em uma abordagem qualitativa, buscando respostas ao problema de pesquisa. O estudo se apoiou, também, em uma pesquisa de caráter exploratório, procurando entender quais são as práticas de leituras desses estudantes no Facebook. Como forma de coletar os dados, o estudo foi dividido em três fases. A primeira fase consistiu no envio de questionários por e-mail ao universo da pesquisa, buscando entender a importância da mídia social no dia a dia de cada estudante. Nesse questionário, os pesquisados assinalaram interesse em participar da segunda fase da pesquisa que consistiu na visita in loco do pesquisador ao Campus Urutaí realizando uma entrevista estruturada, na qual foram verificadas as trajetórias de leitura, bem como as práticas de leitura desses estudantes no Facebook. De posse desses dados, partiu-se para a terceira fase do estudo que examinou os perfis dos estudantes pesquisados, buscando assim, evidências de leitura dos graduandos nas mídias sociais. Concluiu-se que as mídias sociais influenciam as leituras dos discentes, porém ainda existe um movimento tímido dentro do Campus Urutaí. Os professores e demais servidores da instituição devem participar efetivamente desses ambientes, aliando as mídias sociais ao contexto acadêmico, proporcionando, portanto, novas perspectivas de ensino-aprendizagem.
654

Evasão e fracasso escolar de alunos de comunidades indígenas do Instituto Federal de Roraima / Campus Amajari: um estudo de caso

Lopes, Mateus Sena 25 April 2017 (has links)
Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-09-19T20:36:00Z No. of bitstreams: 1 mateussenalopes.pdf: 1307180 bytes, checksum: 3038997bcf156fce96d0039ebb4df85c (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-09-22T15:09:01Z (GMT) No. of bitstreams: 1 mateussenalopes.pdf: 1307180 bytes, checksum: 3038997bcf156fce96d0039ebb4df85c (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-09-22T15:10:09Z (GMT) No. of bitstreams: 1 mateussenalopes.pdf: 1307180 bytes, checksum: 3038997bcf156fce96d0039ebb4df85c (MD5) / Made available in DSpace on 2017-09-22T15:10:09Z (GMT). No. of bitstreams: 1 mateussenalopes.pdf: 1307180 bytes, checksum: 3038997bcf156fce96d0039ebb4df85c (MD5) Previous issue date: 2017-04-25 / A pesquisa intitulada “Evasão e Fracasso escolar de alunos de comunidades indígenas do Instituto Federal de Roraima/Campus Amajari: um estudo de caso” parte do interesse em compreender o porquê dos altos índices de evasão e fracasso escolar de alunos de comunidades indígenas matriculados nos cursos técnicos ofertados pelo IFRR/CAM. Estudos sobre evasão e fracasso escolar como os de BRANDÃO, BAETA & ROCHA (1983), citando os estudos de GATTI (1981), ARNS (1978) e FERRARI (1975), culpam o próprio educando pelo seu fracasso. O IFRR/CAM é uma instituição educacional que oferta, dentre outros, educação profissional técnica articulada ao ensino médio no município de Amajari/RR. Este município é cercado por comunidades indígenas. Os alunos indígenas destas comunidades correspondem a 56,2% do total de alunos matriculados no IFRR/CAM e estão entre os mais afetados pela evasão e fracasso escolar. O objetivo geral da pesquisa é identificar o que leva os alunos de comunidades indígenas matriculados nos cursos técnicos articulados ao ensino médio do IFRR/CAM à evasão e fracasso escolar. Para o alcance do objetivo foi feito um estudo de caso de natureza qualitativa, de forma a permitir a contextualização do tema, a exposição teórico-metodológica utilizada e a apresentação dos fatores que levam à evasão e fracasso escolar de alunos de comunidades indígenas matriculados nos cursos técnicos articulados ao ensino médio do IFRR/CAM no período compreendido entre os anos 2008 e 2016. Para isso, a metodologia utilizada fez uso de dados primários e secundários, sendo que os primários foram obtidos por meio de três formas. Em primeiro lugar, o uso da técnica de observação espontânea. Em segundo, com o uso dos seguintes instrumentos de pesquisa: (1) a entrevista semiestruturada; e (2) a aplicação de um questionário. Quanto aos dados secundários, estes foram obtidos por meio da pesquisa de documentos e registros da instituição. Dessa forma, as análises das entrevistas mostraram que fatores como: problemas com a logística do transporte, não identificação com os cursos ofertados, jornada diária desgastante, dificuldade em acompanhar o ritmo dos cursos, problemas de relacionamento com o professor e a reprovação, se destacaram como possíveis causas da evasão e fracasso escolar na instituição. Entretanto, a maneira como estes fatores se apresentam indicam diferenças que podem estar relacionadas aos conflitos gerados pelo choque cultural entre indígenas e não indígenas, principalmente quando negam aos alunos indígenas o seu direito à educação diferenciada. Portanto, pôde ser constatado que o IFRR/CAM, mesmo apresentando algumas propostas inovadoras, ainda não consegue superar a influência de um modelo pensado a luz do sistema capitalista, que historicamente continua promovendo desigualdades sociais. / The research entitled "School Evasion and Failure of Students from Indigenous Communities of the Federal Institute of Roraima / Amajari Campus: A Case Study" is part of the interest in understanding why high rates of school dropout and failure of students from indigenous communities enrolled in the courses Offered by IFRR / CAM. Citations of GATTI (1981), ARNS (1978), and FERRARI (1975), blame the student for his failure, such as those of Brandon, Baeta & Roche (1983). The IFRR / CAM is an educational institution that offers, among others, professional technical education articulated to secondary education in the municipality of Amajari / RR. This municipality is surrounded by indigenous communities. The indigenous students of these communities correspond to 56.2% of the total number of students enrolled in the IFRR / CAM and are among the most affected by school dropout and failure. The general objective of the research is to identify what leads the students of indigenous communities enrolled in the technical courses articulated to the high school of the IFRR / CAM to school dropout and failure. To reach the objective, a case study of a qualitative nature was done in order to allow the contextualization of the theme, the theoretical and methodological exposition used and the presentation of the factors that lead to the school dropout and failure of students from indigenous communities enrolled in the courses Technicians articulated to the high school of the IFRR / CAM in the period between 2008 and 2016. For this, the methodology used made use of primary and secondary data, and the primary ones were obtained in three ways. Firstly, the use of the spontaneous observation technique. Second, with the use of the following research tools: (1) the semistructured interview; And (2) the application of a questionnaire. As for the secondary data, these were obtained through the research of documents and records of the institution. Thus, the analysis of the interviews showed that factors such as: problems with the transportation logistics, not identification with the offered courses, exhausting daily journey, difficulty in keeping up with the rhythm of the courses, relationship problems with the teacher and disapproval, As possible causes of school dropout and failure in the institution. However, the way in which these factors are presented indicates differences that may be related to the conflicts generated by cultural clashes between indigenous and non-indigenous people, especially when they deny indigenous students their right to differentiated education. Therefore, IFRR / CAM, even presenting some innovative proposals, still can not overcome the influence of a model thought in the light of the capitalist system, which historically continues to promote social inequalities.
655

[en] UERJ - PAVILHÃO JOÃO LYRA FILHO: DESIGN AND CONSTRUCTION / [pt] UERJ - PAVILHÃO JOÃO LYRA FILHO: PROJETO E CONSTRUÇÃO

30 December 2021 (has links)
[pt] Esse trabalho se dedica a uma análise de ordem projetual e construtiva do Pavilhão João Lyra Filho, edifício principal do Campus Francisco Negrão de Lima, sede da Universidade do Estado do Rio de Janeiro (UERJ). O campus, objeto de um concurso realizado pela Universidade em 1968, no qual os arquitetos Flávio Marinho Rêgo e Luiz Paulo Conde foram os vencedores, tem origem em um período de transição da arquitetura moderna brasileira e de expansão da estrutura voltada para o ensino superior no Brasil e no mundo. Nesse período, surgem no cenário internacional propostas inovadoras de campi que dialogam com a ideia de megaestrutura. Stefan Muthesius, autor do livro The postwar university: Utopianist campus and college, publicado no ano 2000, reconhece esses campi como single structure campus, em uma tradução livre campus de estrutura única. Essa classificação remete à campi em que o complexo programa universitário se concentra majoritariamente em um único edifício. Nesses casos, campus e edifício se confundem em uma única estrutura, impossibilitando dissociarmos um do outro. / [en] This work is dedicated to an analysis of the design and construction order of the João Lyra Filho Pavilion, the main building on the Francisco Negrão de Lima Campus, headquarters of the Universidade Estadual do Rio de Janeiro (UERJ). The campus, the object of a competition held by the University in 1968, in which the architects Flávio Marinho Rêgo and Luiz Paulo Conde were the winners, has its origins in a period of transition of modern Brazilian architecture and expansion of the structure aimed at higher education in Brazil. During this period, innovative proposals for campuses that dialogue with the idea of megastructure emerged on the international scene. Stefan Muthesius, author of the book The postwar university: Utopianist campus and college, published in 2000, recognizes these campuses as single structure campus. This classification refers to campuses such as UERJ, where the complex university program is concentrated in a single building, in the case of the University in the João Lyra Filho Pavilion. In these cases, campus and building are confused in a single structure, making it impossible for us to dissociate from each other.
656

A New (Bowling Green State) University: Educational Activism, Social Change, and Campus Protest in the Long Sixties

Carlock, Robert Michael 10 May 2019 (has links)
No description available.
657

Analyzing Campus Safety: A Survey of Perceived Risk, Crime and Outdoor Lighting Levels

Marcheskie, Justin S. 11 June 2019 (has links)
No description available.
658

A Narrative Exploration of Free Speech Events by New Student Affairs Professionals

Leftin, Adam Zook 16 July 2020 (has links)
No description available.
659

Crisis planning at private residential institutions of higher education in Northern California

Chun, Hans H. 01 January 2008 (has links) (PDF)
The purpose of this study was to analyze critical elements for crisis planning at seven private four-year residential colleges and universities in Northern California. The researcher reviewed each campus's written crisis plans and interviewed campus officials in charge of leading their respective institution's crisis planning efforts. The data revealed that the threat of natural disasters was a common impetus for formal crisis planning. Institutions borrowed information from other campuses and public and private organizations to develop institutional crisis plans. Outside agencies both contributed to and gained from collaboration with these institutions, although all institutions sought a degree of self-sufficiency for food and water supplies. Emergency Operations Centers were designed to focus staffing and resources in a single, in some cases moveable, location in the event of a crisis. Campuses in this study invested considerable resources in systems of communication with students, faculty, and staff, including sirens, digital displays, and Connect-ED, but individual subscription remained a barrier to the smooth functioning of Connect-ED. Multi-layered communication systems enhance a campus's ability to communicate with all stakeholders. Philosophies varied on specificity versus flexibility as the framework for crisis planning. Campuses used threat assessment teams as proactive intervention to identify students who pose a threat to themselves or others. The State of California Standardized Emergency Management System (SEMS), which became a template for the Federal National Incident Management System (NIMS), has become the unifying factor for crisis planning among these institutions. SEMS/NIMS, while not a mandate, emerged as a driving force for planning, because compliance with SEMS/NIMS is a requirement for receiving federal disaster emergency reimbursement for property damage. Practicing the plan, through tabletop and functional simulation exercises, allowed campus officials and civic safety agencies to develop a shared vocabulary and procedures. Crisis planning is a means to help a campus prepare for and respond to an incident in an effective manner, thus reducing harm to people and property damage. Although crisis planning cannot completely prevent incidents from occurring, appropriate and advanced planning and preparation can allow campus leaders to contain both the duration of and the damage caused by major crises.
660

A Study on Building Energy Modelling and Energy Efficiency Strategies for Educational Buildings / En Studie om Byggnadsenergimodellering och Energieffektivitetsstrategier för Utbildningsbyggnader

Gil Castro, Robertson Manuel André, Vera Martínez, Raúl January 2023 (has links)
The building sector is one of the sectors with the highest energy utilization and is one of the largest sources of CO2 emissions worldwide. At the same time, energy prices in Europe have significantly increased in recent years. For these two reasons, energy efficiency in buildings has become highly relevant for public and private organizations aiming to reduce energy consumption for the operation of buildings and therebyd ecrease their carbon footprint and operation costs for users and owners. This master’s thesis aims to identify areas of opportunity for energy utilization reduction and the implementation of energy efficiency strategies in four buildings of the KTH Campus, owned by Akademiska Hus. First, an energy data analysis of the last years of the operation of the buildings was conducted to identify trends and atypical energy uses. Next, energy audits were performed on the most important energy-consuming equipment and major building facilities to understand the operation conditions and characteristics of electrical, heating, and cooling systems, aiming to identify areas of opportunity for reducing energy use from current operation of the buildings. Subsequently, after understanding the energy use in the four buildings, models of the buildings were created in IDA ICE. The approach involved two steps: first, modeling the buildings’ geometry and adapting their energy consumption to match the patterns identified in the previous data analysis; and secondly, modeling the implementation of energy efficiency strategies on the buildings that aim to improve the findings of the data analysis and energy audits performed previously. These energy efficient models were subjected to energy performance analysis, economic analysis, investment feasibility analysis, among others. The results obtained from the models with energy efficiency strategies showed energy and economic savings that varied from building to building through the automation of lighting systems in the buildings, with an average return on investment of 2.5 years. Likewise, significant savings were achieved by reducing the heating setpoint during nights, causing the district heating usage to differ from the daytime demand, resulting in savings between 5 % and 8 % of the total annual energy use in the buildings, without any required investment. Additionally, the implementation of renewable energy solutions was studied by modeling the use of solar panels in the buildings, leading to a reduction in electrical grid demand between 20 % and 48 %, depending on the available area for the panels, with an average return on investment of 5.5 years. Other strategies were also studied and discussed in this report. In conclusion, this study provides evidence of the energy, economic, and environmental feasibility of different energy efficiency strategies that can be implemented in the buildings of the KTH campus. These strategies contribute to achieving the environmental objectives of Akademiska Hus and KTH. / Byggnadssektorn är en av de sektorer som har högst energianvändning och är en av de största källorna till utsläpp globalt. Samtidigt har energipriserna i Europa ökat avsevärt de senaste åren. Av dessa två skäl har energieffektivitet i byggnader blivit mycket relevant för offentliga och privata organisationer som strävar efter att minska energiförbrukningen för byggnaders drift och därigenom minska deras koldioxidavtryck och driftskostnader för användare och ägare. Denna master avhandlingsyftar till att identifiera möjlighetsområden för minskning av energianvändning samt implementering av energieffektivitetsstrategier i fyra byggnader på KTH Campus, ägda av Akademiska Hus. Först genomfördes en analys av energidata från de senaste åren av byggnadernas drift för att identifiera trender och otypisk energianvändning. Därefter utfördes energirevisioner av de mest betydande energiförbrukande utrustningarna och huvudsakliga byggnadsanläggningarna för att förstå driftsförhållandena och egenskaperna hos elektriska, uppvärmnings- och kylsystem. Syftet var att identifiera möjlighetsområden för att minska energianvändningen från nuvarande drift av byggnaderna. Efter att ha förstått energianvändningen i de fyra byggnaderna skapades modeller av byggnaderna i IDA ICE. Tillvägagångssättet innefattade två steg: först att modellera byggnadernas geometri och anpassa deras energiförbrukning för att matcha de mönster som identifierades i den tidigare dataanalysen. Sedan modellering av implementeringen av energieffektivitetsstrategier på byggnaderna, som syftar till att förbättra resultaten av den tidigare utförda dataanalysen och energirevisionerna. Dessa energieffektiva modeller underkastades analys av energiprestanda, ekonomisk analys, investeringsmöjlighetsanalys, bland andra. Resultaten som erhölls från modellerna med energieffektivitetsstrategier visade på energi- och ekonomiska besparingar som varierade från byggnad till byggnad genom automatisering av belysningssystemen i byggnaderna, med en genomsnittlig avkastning på investeringen på 2.5 år. På samma sätt uppnåddes betydande besparingar genom att sänka uppvärmningsinställningen under nätterna, vilket fick fjärrvärmeförbrukningen att skilja sig från dagtidens efterfrågan och resulterade i besparingar mellan 5 % och 8 % av den totala årliga energianvändningen i byggnaderna, utan någon nödvändig investering. Dessutom studerades implementeringen av förnybara energilösningar genom modellering av användningen av solpaneler i byggnaderna, vilket ledde till en minskning av elnätets efterfrågan med mellan 20 % och 48 %, beroende på tillgänglig yta för panelerna, med en genomsnittlig avkastning på investeringen på 5.5 år. Andra strategier studerades också och diskuterades i denna rapport. Sammanfattningsvis ger denna studie bevis på energi-, ekonomi- och miljömässig genomförbarhet av olika energieffektivitetsstrategier som kan implementeras i byggnaderna på KTH Campus. Dessa strategier bidrar till att uppnå miljömålen för Akademiska Hus och KTH.

Page generated in 0.0341 seconds