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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.
11

Analýza připojení nového zdroje do soustavy / New Resources Connection Analysis to Power System

Galuszka, Jakub January 2009 (has links)
This dissertation deals with the idea of annexing a new nuclear resource in the locality of the Dukovany Nuclear Power Plant and the way of its connection to the power system. The main aim of this dissertation is to design concrete solution of the connection of the new resource to a certain point of the power system and complete this design by means of chosen calculation. According to the task, this dissertation consists of three parts. The first part describes the current engineering solution of the main one line diagram of our two existing nuclear power plants and generally of chosen types of power plants abroad, too. There is also a design of the internal consumption of the nuclear power plants. The objective of the second part of this dissertation is to present the survey of the power and dispositional variants of the new resource in view and mainly assess general possibilities of its connection. Using all information from the preceding part, the third part presents the concrete design of the engineering solution of the connection of the new resource to the power system and also the calculation of parameters of block transmission line. Another dissertation named “Study of Slavětice Distribution Substation Enlargement for EDU New Resources“ concurs this part or more precisely, my dissertation as a whole . For my dissertation I have used some materials and information from the ČEZ Corporation which are confidential. I have also used some knowledge from the analysis from the EGÚ Brno Corporation. This dissertation neither represents nor substitutes a complex analysis of all aspects of a new nuclear resource in the Dukovany Nuclear Power Plant.
12

Skogsbranden i Västmanland 2014 - en inkluderande katastrofhantering? : En kvalitativ innehållsanalys om gruppers prioritering, social ojämlikhet och resursfördelning / Forest fire in Västmanland 2014 - an inclusive disatser management? : A qualitative content analysis on groups prioritization, social inequality and resource distribution

Bryntesson, Emelie January 2023 (has links)
Ett förändrat klimat ökar risken för fler frekventa skogsbränder, skogsbränder som spås vara mer intensiva än tidigare sett. Det här ger ett behov av att ha en fungerande katastrofhantering när en skogsbrand sker. Krav ställs även på ledande aktörer att besitta den kunskap och erfarenhet som krävs för att kunna hantera en omfattande skogsbrand. Det ställer även krav på att identifiera och bemöta de olika behov som kan uppstå vid en katastrof, samt ge samtliga drabbade samma möjligheter och en jämlik resursfördelning.   Syftet med denna uppsats är att undersöka hur resursfördelningen såg ut mellan personal, samt undersöka hur exponerade boende samt skogsägare informerats och omhändertagits under skogsbranden. Den metod som använts för denna studie är en kvalitativ innehållsanalys med en induktiv ansats, där två rapporter om skogsbranden analyserades. Resultatet visade att det fanns en snedvriden resursfördelning mellan brandmännen och administrativ personal, där brandmännen tilldelades flest resurser. Resultatet visade även att skogsägarna omhändertogs väl och fick särskilda informationsplatser, samtidigt som exponerade boende utsattes för onödiga risker vid evakueringarna som skedde. Boende som inte talade svenska fick i vissa områden tillgång till information och stöd men var bristfälligt i andra områden. / A changing climate increases the risk of more frequent forest fires, forest fires that are predicted to be more intense than previously seen. This creates a need to have a functioning disaster management system when a forest fire occurs. Demands are also placed on leading actors to possess the knowledge and experience required to be able to handle an extensive forest fire. It also requires identifying and responding to the various needs that may arise in the event of a disaster, as well as giving all those affected the same opportunities and an equal distribution of resources.   The purpose of this essay is to investigate how the distribution of resources looked between personnel, as well as investigate how exposed residents and forest owners were informed and taken care of during the forest fire. The method used for this study is a qualitative content analysis with an inductive approach, where two reports about the forest fire were analyzed. The result showed that there was a skewed distribution of resources between the firefighters and administrative staff, where the firefighters were allocated the most resources. The result also showed that the forest owners were well taken care of and given special information points, while exposed residents were exposed to unnecessary risks during the evacuations that took place. Residents who did not speak Swedish had access to information and support in some areas but were inadequate in other areas.
13

The Distribution of National Board Certified Teachers in Virginia

Kassner, Laura Danielle 03 May 2012 (has links)
This study provides a descriptive analysis of the distribution of National Board Certified Teachers (NBCTs) in Virginia, which offers financial compensation to these educators regardless of teaching assignment. Most localities provide additional incentives to recruit and retain NBCTs, again, not targeted or structured in any way. Given the impact of high quality teachers on student learning and the well-documented disparities in access for subsets of the student population, it is important to obtain a baseline measure of NBCT distribution in Virginia upon which leaders might build a plan for reform. Three research questions were addressed: How are NBCTs distributed across Virginia with regards to divisions' ability to pay? In school divisions with a high concentration of NBCTs, what incentive structures do these divisions offer to either support teachers while they apply to NBPTS or to recruit and retain previously successful NBCTs? What are the characteristics of the schools in which NBCTs serve with regards to the race/ethnicity and socioeconomic status of their student populations? The researcher determined NBCTs were distributed unequally across Virginia's divisions and schools based on divisions' ability to pay and student demographics. Formal support structures were found in most high concentration divisions. / Ed. D.
14

Measuring and Analyzing Community Resilience During COVID-19 Using Social Media

Valinejad, Jaber 22 October 2021 (has links)
Community resilience (CR) has been studied as an indicator to measure how well a given community copes with a given disaster and provides policy directions on what aspects of the community should be improved with high priority. Although the impact of the COVID-19 has been serious all over the world and every aspect of our daily life, some countries have handled this disaster better than others. In this thesis, I aim to assess the effect of various news and Tweets collected during the COVID-19 pandemic on community functionality and resilience. First, we measure the community resilience (CR) in five different countries using Tweeter data and investigated how each country shows different trends of the CR, which is measured based on real or fake Tweets. We use Tweets generated in Australia (AUS), Singapore (SG), Republic of Korea (ROK), the United Kingdom (UK), and the United States (US) for Mar.-Nov. 2020 and measured the CR of each country and associated attributes for analyzing the overall trends. In the next step, we scrap and manually clean 4,952 full-text news articles from Jan. 2020 to Jun. 2021 and classify them into real, mixed, and fake news by fact-checking. Then we retrieve Tweets from 42,877,312 Tweets IDs from the same period and classify them into real, mixed, and fake Tweets using machine learning classifiers. We compare CR measured from news articles and Tweets based on three categories, namely, real, mixed, and fake. Based on the news articles and Tweets collected, we quantify CR based on two key factors, community wellbeing and resource distribution. We evaluate community wellbeing by assessing mental wellbeing and physical wellbeing while evaluating resource distribution by assessing economic resilience, infrastructural resilience, institutional resilience, and community capital. Based on the estimates of these two factors, we quantify CR from both news articles and Tweets and analyze the extent to which CR measured from the news articles can reflect the actual state of CR measured from Tweets. / M.S. / The COVID-19 pandemic has severely harmed every aspect of our daily lives, resulting in a slew of social problems. It is critical to accurately assess the current state of community functionality and resilience under this pandemic to recover from it successfully. To accomplish this, various types of social sensing techniques, such as Tweeting and publicly released news, have been employed to understand individuals’ and communities’ thoughts, behaviors, and attitudes during the COVID-19 pandemic. However, some portions of the released news are fake and can easily mislead the community to respond improperly to disasters like COVID-19. In this thesis, I aim to assess the effect of various news and Tweets collected during the COVID-19 pandemic on community functionality and resilience. First, we measure the community resilience (CR) in five different countries, i.e., Australia (AUS), Singapore (SG), Republic of Korea (ROK), the United Kingdom (UK), and the United States (US), for Mar.-Nov. 2020 and measured the CR of each country and associated attributes for analyzing the overall trends. In the next step, we compare CR measured from news articles and Tweets based on three categories, namely, real, mixed, and fake. We quantify CR based on two key factors, community wellbeing and resource distribution. We evaluate community wellbeing by assessing mental wellbeing and physical wellbeing while evaluating resource distribution by assessing economic resilience, infrastructural resilience, institutional resilience, and community capital.
15

The role of semantic context and attentional resource distribution in semantic comprehension in Swedish pre-schoolers

Schelhaas, Johanna Renate January 2016 (has links)
Research on semantic processing focused mainly on isolated units in language, which does not reflect the complexity of language. In order to understand how semantic information is processed in a wider context, the first goal of this thesis was to determine whether Swedish pre-school children are able to comprehend semantic context and if that context is semantically built up over time. The second goal was to investigate how the brain distributes attentional resources by means of brain activation amplitude and processing type. Swedish preschool children were tested in a dichotic listening task with longer children’s narratives. The development of event-related potential N400 component and its amplitude were used to investigate both goals. The decrease of the N400 in the attended and unattended channel indicated semantic comprehension and that semantic context was built up over time. The attended stimulus received more resources, processed the stimuli in more of a top-down manner and displayed prominent N400 amplitude in contrast to the unattended stimulus. The N400 and the late positivity were more complex than expected since endings of utterances longer than nine words were not accounted for. More research on wider linguistic context is needed in order to understand how the human brain comprehends natural language. / Tidigare forskning på semantisk processning har fokuserad på isolerade språkliga enheter vilket inte reflekterar språkets komplexitet. För att kunna förstår hur semantisk information processeras i en större kontext, var studiens första syfte att undersöka om svenska förskolebarn om svenska förskolebarn förmår att förstå semantisk kontext och om denna kontext byggs upp över tid. Det andra syftet var att undersöka hur hjärnan fördelar uppmärksamhetsbaserade resurser i avseende på hjärnaktiveringsamplitud och olika processesningstyper. För detta testades svenska förskolebarn i ett dikotiskt lyssningstest med olika barnsagor. Utvecklingen av N400-komponenten, en händelse-relaterad potential, användes för detta. Nedgången av N400 komponenten och den sena positiviteten visades i både de uppmärksammade och ouppmärksammade kanalerna och detta indikerar semantisk förståelse och att semantisk kontext byggdes upp över tid. Därutöver kunde en större N400-amplitud observeras i den uppmärksammade kanalen, vilket indikerar att den fick mer hjärnresurser och använde sig av top-down-bearbetning i större utsträckning än bottom-up-processer. N400-komponenten och sena positiviteten visade sig vara mer komplex än förväntat. Det kan bero för att de sista orden i ett yttrande som var längre än nio ord exkluderades från analysen. Det finns ett behov av forskning som använder sig av längre lingvistiska kontexter och deras effekter i människohjärnan.
16

CoreLB: uma proposta de balanceamento de carga na rede com Openflow e SNMP

Dossa, Clebio Gavioli 18 August 2016 (has links)
Submitted by Silvana Teresinha Dornelles Studzinski (sstudzinski) on 2016-11-01T15:35:45Z No. of bitstreams: 1 Clebio Dossa_.pdf: 1252617 bytes, checksum: 784b95c29ee09e2a922686b26cb7aa51 (MD5) / Made available in DSpace on 2016-11-01T15:35:45Z (GMT). No. of bitstreams: 1 Clebio Dossa_.pdf: 1252617 bytes, checksum: 784b95c29ee09e2a922686b26cb7aa51 (MD5) Previous issue date: 2016-08-18 / Nenhuma / Atualmente, muitos serviços distribuem a carga entre diversos nós computacionais direcionando as conexões com alguma estratégia de balanceamento para divisão da carga. O advento do uso de redes definidas por software (SDN) está mudando paradigmas da administração de redes, absorvendo serviços especializados, automatizando processos e gerando inteligência para regras estáticas com uma grande variedade de opções de implementação. O balanceamento de carga é um dos serviços especializados que pode usufruir dos conceitos de SDN, sem definições e processos estáticos como ocorre muitas vezes nos atuais modelos usados de balanceamento de carga. A definição dos protocolos que suportam SDN usualmente permitem soluções alternativas e eficientes para este problema, desta forma, neste trabalho, é apresentada uma proposta de metodologia para balanceamento de carga entre distintos servidores de um pool com a troca do destino de tráfego realizada pela rede. Esta solução é chamada Core-based load balance (CoreLB), pois o serviço especializado de balanceamento de carga é realizado pela rede onde a administração de pacotes é nativamente realizada. A metodologia faz uso do protocolo SNMP para análise de recursos dos servidores com o objetivo de avaliar a situação de carga de cada nó computacional e de estatísticas de consumo de rede através do protocolo OpenFlow. Este trabalho avaliou o balanceamento de carga em serviços Web e a união de estatísticas de rede e da carga dos servidores, para a tomada de decisão de balanceamento, mostra-se uma metodologia eficiente e com melhores tempos de resposta ao usuário comparado com outras metodologias de avaliadas. Também melhorou a distribuição de consumo de recursos entre os servidores. / Currently, most services balance the load between distinct hosts forwarding connections with a load balance strategy in front. Usually, a dedicated appliance is responsible to performthe balance and may be a fault point and become expensive. The new concepts of computer network architecture with Software-Defined Networking (SND) are changing the network management, absorving specialist services, automating process and building intelligence to statics rules with loads of delivery options. The load balance is a specialized service that can enjoy in a positive way of SDN concepts, with low costs, in a flexible way as per the process needs instead of a plastered process definitions that occurs in many actual models. The OpenFlow protocol definition allow us to use a new solution to address this issue. This work shows a load balance purpose between distinct hosts with the destination change of connections made by the network core. It calls Core-based load balance (CoreLB) because the specialized load balance service move to the network core where the package forwarding is naturally made. This solution intend to use the SNMP protocol to analyse the hosts resources to evaluate server’s load. Using the network forwarding statistics and OS load informations, an efficient solution of load balance, the metodology proved to be efficient with better users’ response times average of 19% than no balanced scenario as well as around 9% better than others load balance strategies and a properly balance consumption of resources from hosts side. This process can be inhered in distinct models, however, this research intend to evaluate Web Services.
17

Delningsekonomi ur ett hållbarhetsperspektiv : Analys av hur de delningsekonomiska organisationerna Uber och Bilpoolarna uppfyller Elinor Ostroms principer för samarbete över allmänna resurser

Bellgran, Jenny January 2017 (has links)
This thesis examines whether two sharing economy organisations, Uber and Bilpoolarna, can be characterized by Elinor Ostrom’s principles for cooperation of common goods or not. The idea for the research question came from the global difficulties with the decision-making regarding the climate issue and Elinor Ostroms studies about the possibility to create sustainable cooperations regarding the distribution of common goods. If cooperation is possible, we might be able to together develop the climate actions in the right direction and make sustainable distributions of resources we have despite missing actions on a global level. The current growth of the sharing economy could be a sign of that possibility. The final result is that the association Bilpoolarna fulfills all principles more or less while Uber fails to fulfill principle 3, 5 and 6, and only to a small extent fulfills the remaining principles. The result indicates that Ostrom’s principles of cooperation not only characterizes common, non-excludable goods such as water and land, but also can extend its principles to the distribution of modern resources, such as the cars of Bilpoolarna – as long as the cooperation is voluntary and on a local level.

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