Дисертації з теми "Information epidemic"
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Ogierman, Adrian [Verfasser]. "Epidemic spreading and information dissemination in technological and social systems / Adrian Ogierman." Paderborn : Universitätsbibliothek, 2014. http://d-nb.info/1060782995/34.
Повний текст джерелаGustafsson, Magnus. "Evaluation of StochSD for Epidemic Modelling, Simulation and Stochastic Analysis." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-426227.
Повний текст джерелаNabie, Mubashir Goolam. "Health information and its influence on the perception of tuberculosis (TB) patients: Current policies and practices at Brooklyn Chest Hospital." University of the Western Cape, 2018. http://hdl.handle.net/11394/6800.
Повний текст джерелаHIV and TB are major problems in the South African context and the burden of these diseases is proving detrimental to the development of the country. These diseases have been evident in the country for many years and in recent times the infection rates of TB and HIV has been alarming. The World Health Organization (WHO) classified TB as a problem and the world was to actively implement strategies to combat this epidemic. The issue with TB control strategies is the emergence of HIV which has been the largest contributing factor to the increase in the TB burden in South Africa and many countries like it. South Africa has made great strides in the control of HIV in areas such as mother to child transmission, awareness programs, initiation of ARVs and medical male circumcision which have proven to be successful. In contrast, the TB burden does not share the same fate. The number of deaths caused by TB is continuously rising, as well as the number of new Multi-drug resistant TB cases. Furthermore the emergence of Extreme –drug resistant TB is seen as a sign of a failing health system. Policy makers are now faced with fact that the Directly Observed Therapy Short course (DOTS) program for the prevention of TB is inadequate in an area with a high HIV prevalence, which is what South Africa is faced with. The research objectives are therefore to identify if knowledge from South African TB policies are being disseminated to people who suffer from TB, also to measure if a lack of knowledge may have an impact on treatment success. A policy analysis was done of 5 South African TB policies to identify areas of the policies which are patient specific. The TB policies emphasized a patient-centred approach and the researcher used this concept to motivate that patient-specific areas must be known by the patients. The specific areas identified were: TB specific areas, Treatment specific areas, Adherence specific areas and information/education specific areas. Based on the policy analysis a case study was conducted at Brooklyn Chest Hospital to measure implementation of the policies on the ground. The study found that education was adequate in areas around TB diagnosis, treatment length, signs and symptoms, and family education. The participants lacked knowledge in areas such as TB contacts, monitoring of TB disease, education of TB prior to diagnosis and a high prevalence of non-adherence and multiple cases of TB were found among the participants. Also, the Chi-Square test found no statistical significance between the length of admission to hospital and treatment outcome. The result also shows that of the participants studied, over 30% of the study had not adhered to TB treatment after discharge. The study finds that there are significant shortfalls in the knowledge of participants based on South African TB policies, with a high non-adherence rate before and after discharge. The study shows a lack in the implementation of policy directives on education, following a patient-centred approach, which is evident in the lack of knowledge found in the participants in many facets of the TB disease and the processes to control TB.
Aboturkia, Amna. "A Study of the Effectiveness of Mobile Technology in the Major Fields and Opioid Epidemic." University of Cincinnati / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1562672587251166.
Повний текст джерела盧偉明 and Brian L. Lo. "Lessons learned through the analysis of public responses towards the release of governmental information during the SARS epidemic in HongKong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B47657534.
Повний текст джерелаpublished_or_final_version
Community Medicine
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Master of Public Health
Mahboubi, Arash. "Security of critical information infrastructures exposed to mobile personal devices." Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/118743/1/Arash_Mahboubi_Thesis.pdf.
Повний текст джерелаAssis, Vanessa Costa. "Análise da qualidade das notificações de dengue informadas no SINAN, na epidemia de 2010, em uma cidade pólo da zona da mata do estado de Minas Gerais." Universidade Federal de Juiz de Fora, 2013. https://repositorio.ufjf.br/jspui/handle/ufjf/1027.
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A dengue é uma doença viral que se apresenta como um importante problema de saúde pública mundial. Todo caso suspeito ou confirmado de dengue deve ser notificado no Sistema de Informação de Agravos de Notificação – SINAN. Os dados inseridos nesse sistema representam uma importante fonte de informação para estudos epidemiológicos e para a avaliação da qualidade do mesmo. Este estudo teve como principal objetivo analisar a qualidade das notificações de dengue informadas no SINAN, referentes à epidemia ocorrida em 2010 no município de Juiz de Fora – MG. Trata-se de um estudo epidemiológico descritivo, cujos dados foram obtidos do SINAN, disponibilizados pelo Departamento de Vigilância Epidemiológica e Ambiental de Juiz de Fora. Foram analisadas as variáveis sexo, faixa etária, dados de residência, raça/cor, escolaridade, local provável de infecção, dados laboratoriais e clínico-epidemiológicos, assim como a completitude, o encerramento oportuno dos casos registrados no Sistema, a duplicidade e a consistência dos dados. Foram notificados 9396 casos de dengue em Juiz de Fora, dos quais 62,9% foram classificados como Dengue Clássico, 0,9% como Dengue com Complicações, 0,1% como Febre Hemorrágica da Dengue, 0,04% como Síndrome do Choque da Dengue, 4,9% casos descartados, 30,8% inconclusivos, 0,3% casos ignorados/em branco, sendo que entre o total dos casos notificados 0,2% evoluíram para óbito. A maioria dos casos foi constatada em indivíduos do sexo feminino, na faixa etária de 32 a 59 anos, residentes na zona urbana, da raça branca, com ensino fundamental completo/incompleto e autóctones do município. A análise da completitude obteve classificação ruim para a maioria de seus campos, exceto para os de preenchimento obrigatório que receberam classificação excelente. Não foram encontradas notificações em duplicidade e 95,88% dos casos foram encerrados oportunamente. A análise da consistência obteve classificação excelente. As análises realizadas nesse trabalho apresentaram importantes informações para o conhecimento da epidemiologia da dengue em Juiz de Fora, consequentemente criando parâmetros para um melhor direcionamento das atividades de vigilância e controle da doença. Mostrou-se preocupante a quantidade de variáveis em branco/ignorado, apontando a necessidade de capacitação dos profissionais sobre a importância do preenchimento dos instrumentos base dos sistemas de informação.
Dengue is a viral disease that presents itself as an important public health problem worldwide. All suspected or confirmed case of dengue should be notified in the Notifiable Hazards Information System (Sistema de Informação de Agravos de Notificação – SINAN). Data included in this system represent an important source of information for epidemiological studies and for the evaluation of quality. This study aimed to analyze the quality of reports of dengue reported in SINAN, referring to the epidemic occurred in 2010 in the city of Juiz de Fora - MG. This is a descriptive epidemiological study whose data were obtained from SINAN, provided by the Environmental and Epidemiological Surveillance Department of Juiz de Fora. The analysis included the variables sex, age range, address, race/skin color, schooling, probable source of infection acquisition, laboratory and clinical and epidemiological data, as well as the completeness, timely closure of the recorded cases, duplicity and consistency of the data. Of the 9396 dengue cases notified in Juiz de Fora, 62.9% were classified as Classical Dengue, 0,9% as Dengue with Complications, 0,1% as Dengue Hemorrhagic Fever, 0.04% as Dengue Shock Syndrome, 4.9% were discarded, 30.8% inconclusive, 0.3% cases ignored / blank and 0.2% of the total of reported cases died. Most cases occurred in healthy adults aged 32 to 59 years, of the female sex, living in the urban area, of the white race, with complete/incomplete fundamental education, and autochthonous from the municipality. Completeness was poor for most fields, except for those to be compulsorily completed, which were classified as excellent. No notifications in duplicity were found, and 95.88% of the cases were timely closed. Consistency was classified as excellent. The analyzes performed in this study provided important information for understanding the epidemiology of dengue in Juiz de Fora, thus creating a better parameters for directing the activities of surveillance and disease control. It was showed a worrying amount of variables in white / ignored, pointing to the need for training of professionals about the importance of filling the information systems´s instruments based.
Xin, Ying. "Complex Dynamical Systems: Definitions of Entropy, Proliferation of Epithelia and Spread of Infections and Information." Ohio University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1522955730251256.
Повний текст джерелаChen, Yulu. "Spatial Temporal Analysis of Traffic Patterns during the COVID-19 Epidemic by Vehicle Detection using Planet Remote Sensing Satellite Images." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1609843145639886.
Повний текст джерелаTabah, Albert N. "Information epidemics and the growth of physics." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ56723.pdf.
Повний текст джерелаLong, Yunhan. "Spread and interaction of epidemics and information on adaptive social networks." W&M ScholarWorks, 2015. https://scholarworks.wm.edu/etd/1539624000.
Повний текст джерелаStewart, Avaré Bonaparte [Verfasser]. "Automatic text filtering using limited supervision learning for epidemic intelligence / Avaré Bonaparte Stewart." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2014. http://d-nb.info/1065274971/34.
Повний текст джерелаGraf, Brolund Alice. "Compartmental Models in Social Dynamics." Thesis, Uppsala universitet, Avdelningen för systemteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-448163.
Повний текст джерелаMatematiska modeller kan hjälpa oss att förstå många typer av sociala fenomen, som ryktesspridning, spridning av memes, gruppbeslut, segregation och radikalisering. Det finns idag otaliga modeller för sociala beteenden hos människor och djur, och fler presenteras kontinuerligt. Det stora antalet modeller försvårar navigering inom forskningsfältet, och många av modellerna är dessutom komplicerade och svåra att verifiera genom experiment. I detta arbete föreslås ett ramverk av grundläggande modeller, som var och en modellerar en aspekt av socialt beteende; det gäller sociala epidemier, cykler, gemensamt handlande, gruppbeslut, segregation och polarisering. Vi menar att dessa modeller utgör majoriteten av de verifierbara aspekter av socialt beteende som studeras, och att de bör behandlas som en utgångspunkt när en ny modell ska introduceras. Vilka av mekanismerna från utgångspunkten finns representerade i modellen? Skiljer den sig ens nämnvärt från utgångspunkten? Genom att ha en god förståelse för grundmodellerna, och genom att förklara på vilket sätt en ny modell skiljer sig från dem, kan forskare undvika att presentera modeller som i praktiken är mer komplicerade varianter av sådana som redan finns. I detta arbete visar vi hur dessa grundläggande modeller kan formuleras och studeras. Modellerna bygger på enkla regler om vad som händer när individer i en befolkning möter varandra. Till exempel, om en person som har vetskap om ett rykte träffar någon som inte har det, kan ryktet spridas vidare. Därför har antaganden om vilka personer som kan träffa varandra stor påverkan på de resultat som modellerna ger. I detta arbete studeras varje modell med två olika metoder: i den ena har alla personer i befolkningen samma sannolikhet att träffa varandra, i den andra representeras befolkningen av ett rutnät, där varje plats motsvarar en individ. I den senare har alltså varje person ett begränsat antal grannar att interagera med. Vilken av dessa två metoder man väljer har stor betydelse för vilka beteenden modellerna förutspår. Som ett komplement till detta arbete presenteras ett verktyg i form av ett Python-program som utför analysen av modellerna. Detta kan användas för att undersöka grundmodellerna som presenteras i detta arbete, men också för att formulera och analysera nya modeller på samma sätt. På det viset kan nya modeller enkelt jämföras mot grundmodellerna. Verktyget är användbart både som introduktion för de som är nya inom social dynamik, men också för de forskare som som vill ta fram nya modeller och föra forskningsfältet vidare.
Nygren, Stina, and Moa Zeidlitz. "Investigating inclusive risk communication in the context of influenza outbreaks : Insights from South Korea and Vietnam." Thesis, Södertörns högskola, Utveckling och internationellt samarbete, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-41165.
Повний текст джерелаXaviera, T. J. (Torres Joerges). "Importancia de la viruela, gastroenteritis aguda y paludismo en Finlandia entre 1749 y 1850." Doctoral thesis, University of Oulu, 2006. http://urn.fi/urn:isbn:9514279417.
Повний текст джерелаResumen En el Reino de Suecia, al que pertenecía Finlandia hasta el siglo XIX, los registros parroquiales de enterramiento especificaban la causa de muerte más tempranamente que en otros países de Europa. Utilizando la información contenida en 1,2 millones de registros de defunción, provenientes de 234 parroquias diferentes, se analiza el impacto de las enfermedades infecciosas en la población de Finlandia entre 1749 y 1850. Se estudia en especial la distribución temporal y geográfica de las mayores epidemias de gastroenteritis aguda, viruela y paludismo. Ni la revolución industrial ni la transición demográfica ni la era bacteriológica llegaron a Finlandia hasta finales del siglo XIX. La población en la época de estudio era, por tanto, rural, dispersa, con altos índices de natalidad y mortalidad y estaba indefensa ante la mayor parte de las dolencias. Las enfermedades infecciosas eran la principal causa de muerte, especialmente entre los niños. Al conjunto de las tres causas de muerte estudiadas, gastroenteritis, viruela y paludismo, puede atribuirse un sexto del total de las muertes analizadas. La gastroenteritis aguda causaba una importante mortalidad de manera constante en sus áreas endémicas (sureste del país y costa de Ostrobotnia) y una mortalidad catastrófica, en forma de grandes epidemias, en coincidencia con alteraciones en la población tales como guerras o hambrunas. La viruela era endémica en el país y se manifestaba en forma de picos epidémicos periódicos que generaban gran mortalidad entre los niños. Las zonas más densamente pobladas actuaban como reservorios desde los cuales la enfermedad se expandía al resto del país. La generalización del uso de la vacuna a partir de las primeras décadas del siglo XIX modificó tanto la distribución espaciotemporal de las epidemias como su perfil de mortalidad por edades. El paludismo era endémico en el suroeste de Finlandia durante el periodo de estudio, siendo especialmente importante en las Islas åland. Las variaciones en la importancia de esta enfermedad no parecen responder a crisis en la población sino a factores ambientales. Las causas de muerte estudiadas modularon de manera importante la mortalidad general de la Finlandia de los siglos XVIII y XIX
Tiivistelmä Ruotsin kuningaskunnassa, johon Suomi 1800-luvulle saakka kuului, hautauksia koskevissa kirkonkirjoissa spesifioitiin kuolinsyy aikaisemmin kuin muissa Euroopan maissa. Tässä tutkimuksessa analysoidaan 234 eri kunnasta peräisin olevaa 1,2 miljoonan henkilön kuolintilastoon sisältyvää informaatiota infektiosairauksien vaikutuksesta Suomen väestöön vuosien 1749 ja 1850 välillä. Erityisesti tutkitaan akuutin mahasuolitulehduksen, isonrokon ja malarian merkittävimpien epidemioiden ajallista ja maantieteellistä levinneisyyttä. Teollinen vallankumous kuin myöskään väestöllinen muutos tai bakteriologinen aikakausi eivät saapuneet Suomeen 1800-luvun loppuun mennessä. Tutkittavan aikakauden väestö oli siten maaseudulla elävää, hajanaista, sillä oli korkea syntyvyys ja kuolleisuus ja se oli suojaton suurinta osaa sairauksia vastaan. Infektiosairaudet olivat pääasiallisin kuolinsyy, erityisesti lasten keskuudessa. Tämän kolmen tutkitun kuolinsyyn joukon, mahasuolitulehduksen, isonrokon ja malarian, voidaan katsoa aiheuttaneen kuudenneksen analysoitujen kuolemien kokonaismäärästä. Akuutti mahasuolitulehdus aiheutti tasaisesti merkittävän kuolleisuuden yleisillä esiintymisalueillaan (maan kaakkoisosa ja Pohjanmaan rannikko) ja katastrofaalisen kuolleisuuden suurten epidemioiden muodossa samanaikaisesti sellaisten väestössä tapahtuvien muutosten kuten sotien tai nälänhädän kanssa. Isorokko oli maassa yleisesti esiintyvää ja ilmeni jaksottaisten epidemiahuippujen muodossa, jotka aiheuttivat suuren kuolleisuuden lasten keskuudessa. Tiheimmin asutetut alueet toimivat reserveinä, joista sairaus levisi loppuun osaan maata. Rokotuksen käytön yleistyminen 1800-luvun ensimmäisistä vuosikymmenistä lähtien muutti niin epidemioiden alueellista ja ajallista levinneisyyttä kuin sen kuolleisuusprofiilia ikäluokittain. Malaria oli yleisesti esiintyvää Lounais-Suomessa, ja tutkittavana aikakautena se oli erityisen merkittävää Ahvenanmaan saaristossa. Muutokset tämän sairauden merkittävyydessä eivät vaikuta vastaavan väestökriisejä vaan ilmastollisia tekijöitä. Tutkitut kuolinsyyt muuttivat merkittävästi kuolleisuutta 1700- ja 1800-lukujen Suomessa
Traoré, Boukaye Boubacar. "Modélisation des informations et extraction des connaissances pour la gestion des crises." Thesis, Toulouse, INPT, 2018. http://www.theses.fr/2018INPT0153.
Повний текст джерелаThe rise of emerging data collection technologies offers new opportunities for various scientific disciplines. IT is expected to play its part by developing intelligent data analysis techniques to provide some insight into solving complex problems. The content of this doctoral research dissertation is part of the general problem of extracting knowledge from data by computer techniques. This PhD work focuses, firstly, to the problem of information modeling for crisis management requiring medical care, using a collaboration of computer applications of telemedicine. We proposed a methodology for managing a remote crisis in three stages. It is mainly focused on the collaboration of telemedicine acts (Teleconsultation, Teleexpertise, Telemonitoring, Remote Assistance, and Medical Regulation), from the transport phase of victims to the phase of medical treatment in and / or between health structures. This methodology not only helps to provide crisis managers with a computerized decision aid system, but also to minimize the financial costs and to reduce the response time of emergency through an organized management of the crisis. Secondly, we studied in detail the extraction of knowledge using data mining techniques on satellite images to discover epidemic r risk areas, including the case study focused on the cholera epidemic in the region of Mopti, Mali. Thus, a methodology of six phases was presented by relating the data collected in the field and satellite data to prevent and more effectively monitor the epidemic crises. The results show that 66% of the contamination rate is related to the Niger River, in addition to certain societal factors such as garbage dumps in winter. As a result, we have been able to establish the link between the epidemic and its development environment, which will enable decision makers to better manage a possible crisis of epidemic. And finally, during an epidemic crisis situation, we focused on medical analysis, more specifically by the use of portable microscopes to confirm or not the presence of pathogens in samples of case suspects. To do this, we have presented a methodology in six phases, based on the techniques of deep learning including one of convolutional neural network techniques, transfer learning that take advantage of complex systems and analysis of large amounts of data. The idea is to train networks convolutional neural automatic image classification pathogens. For example in our case study, this approach was used to distinguish a microscopic image containing the cholera epidemic virus called Vibrio cholerae from a microscopic image containing the malaria epidemic virus called Plasmodium. This allowed us to obtain good performances with a classification accuracy of 99%. Subsequently, the idea is to deploy this pathogen image recognition solution in intelligent portable microscopes for routine analysis and medical diagnostic applications in crisis management. This will make it possible to fill the lack of specialists in microscopic manipulation and a considerable time saving in the analysis of the samples with precise measures favoring the accomplishment of the work under better conditions
Calmona, Carlos Odair. "Influenza A H1N1 no Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HC/FMUSP); perfil clínico dos casos atendidos e utilização de serviços hospitalares." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/5/5137/tde-26052014-091612/.
Повний текст джерелаHealt care comprises multiple ways of services, where hospitals are the nuclear reference institution of health services. In may 2009, a new pandemic influenza vírus subtype was identified as Influenza A(H1N1)09pdm, wich was characterized by high demand for hospital visits and hospitalizations. This research aimed to study the hospital service expenditure on confirmed and non-confirmed hospitalizations associated with Influenza A(H1N1)09pdm at Instituto Central do Hospital das Clínicas FMUSP (ICHC - HCFMUSP), between May and December of 2009. It was analyzed the registers from the notification database and output hospital database from the Information Health Department. According to inclusion criteria, it was found 430 people with 632 hospitalizations with 26% (n=112) patients and 22,3% (n=141) hospitalization for confirmed cases. For non confirmed hospitalizations, the median length of stay was 5+17 (0-161) days with 23,4% (n=148) of ICU admissions with median length of stay 4,5+7,8 (0-46) days. For confirmed cases, the hospitalization length of stay was 5+19,1 (0-161) days with 26,9% (n=38) on ICU admissions with median length of stay 5+8,3 (0-31) days. The notification peak was on August with 31,6% (n=200 from 632) hospitalizations form non-confirmed cases and 44% (n=62 from 141) confirmed cases hospitalization. The Influenza A(H1N1)09pdm impacted on service expenditure, because of its distribution in several wards from ICHC wich implied high expenditure of diagnosis and therapeutic proceeds
Ywasaki, Fernanda. "O Uso do Sensoriamento Remoto e Sistemas de Informação Geográfica (SIG) no estudo da correlação entre alteração de biomassa e ocorrência de raiva em herbívoros nas regiões do Vale do Paraíba Paulista e Alto Tietê durante epidemia de raiva no período de 1996 a 2006." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/10/10134/tde-09022011-132924/.
Повний текст джерелаThe present work evaluated the correlation between environmental changes and herbivore rabies in eastern São Paulo State, from 1996 to 2006, using remote sensing and geographic information systems techniques. Images from Landsat-5 satellite, sensor TM, orbits 281 and 219, point 76, bands 3 and 4 were used to obtain the normalized difference vegetation index (NDVI). For each year, the subtraction of NDVI was calculated in order to evaluate the changes in vegetation coverage or biomass robustness. Also, the occurrence of rabies was obtained, for each local administrative division, called municipality, later corrected by the number of herbivores. Significative differences were obtained when comparing mean NDVI changes, being gain, loss or both using Wilcoxon test, except between 1996 and 1997. Differences were also obtained in negative rank sums from 1998 and 2002. The correlation analysis between NDVI loss and rabies occurrence was significative in 2002 and 2003. The correlation between NDVI gain and rabies occurrence was significative in 1998 and 2003. For both gain and loss of NDVI, there was significant correlation with rabies occurrence only in 2002. For corrected rabies outbreaks, there was significative correlation in 2000, 2002, 2004 and 2006. Positive correlation between NDVI changes and herbivores herds suggests that rise in number of herds impacts vegetation coverage, consequently the increase of rabies occurrence, caused by changes in vampire bat habitats. The implantation of an animal health service in São Paulo, in 1999, imposing vaccination against rabies in cattle in 2002, may have covered positive correlation from 1996 to 1999. After the consolidation of control measures, NDVI changes turned to be correlated, allowing its classification as risk factor for rabies occurrence. The proposed method can be an alternative to study environmental changes as risk factor of infectious diseases epidemiology. The improvement of the method is necessary to control atmospheric conditions and the period of images acquirement
Valentini, Luca. "Disseminazioni in reti peer-to-peer attraverso algoritmi di gossip a due fasi." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10446/.
Повний текст джерелаRocha, Luis E. C. "Exploring patterns of empirical networks." Doctoral thesis, Umeå universitet, Institutionen för fysik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-46588.
Повний текст джерелаVi är ständigt kämpar för att förstå hur naturen fungerar, försöker identifier återkommande evenemang och söker analogier och relationer mellan objekt eller individer. Veta beteendemönster är kraftfull och grundläggande för överlevnad av arter. I denna avhandling, dataset av olika system i samband med transporter är ekonomi, sexuella och sociala kontakter, som kännetecknas av att använda formalismer av tidsserier och nätverk teori. En del av resultatet utgörs av insamling och analys av ursprungliga nätdata, fokuserar resten på simulering av dynamiska processer i dessa nätverk och att studera hur de påverkas av de särskilda strukturer. Huvuddelen av avhandlingen handlar om tidsmässiga nät, i.e. nät vars struktur förändringar i tid. Den nya tidsdimensionen avslöjar strukturella dynamiska egenskaper som hjälper till att förstå den feedback mekanismer som ansvarar för att göra nätverksstruktur att anpassa sig och förstå uppkomsten och hämning av olika företeelser i dynamiska system, epidemier i sexuella och kontaktnät.
Constantemente nos esforçamos para entender como a natureza funciona, tentando identificar eventos recorrentes e procurando por analogias e relações entre objetos ou indivíduos. Conhecer padrões de comportamento é algo poderoso e fundamental para a sobrevivência de qualquer espécie. Nesta tese, dados de sistemas diversos, relacionados a transporte, economia, contatos sexuais e sociais, são caracterizados usando o formalismo de séries temporais e teoria de redes. Uma parte dos resultados consiste na coleta e análise de dados de redes originais, a outra parte concentra-se na simulação de processos dinâmicos nessas redes e no estudo de como esses processos são afetados por determinadas estruturas. A maior parte da tese é sobre redes temporais, ou seja, redes cuja estrutura varia no tempo. A nova dimensão temporal revela propriedades estruturais dinâmicas que contribuem para o entendimento dos mecanismos de resposta responsáveis pela adaptação da rede, e para o entendimento da emergência e inibição de fenômenos diversos em sistemas dinâmicos, como epidemias em redes sexuais e de contato pessoal.
Alkhurayyif, Saad A. "Third-Party Perception: Implications for Governance and Communication of Health Risks during the Umrah in Saudi Arabia." Thesis, University of North Texas, 2020. https://digital.library.unt.edu/ark:/67531/metadc1703424/.
Повний текст джерелаLindemann, Christoph, and Oliver P. Waldhorst. "Epidemic Dissemination of Presence Information in Mobile Instant Messaging Systems." 2005. https://ul.qucosa.de/id/qucosa%3A32132.
Повний текст джерелаChung, Chien-Ming, and 鐘健銘. "Influence of Local Information on Epidemic Simulation under Complex Networks." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/46679668842682243638.
Повний текст джерела國立交通大學
資訊科學系所
93
Besides using complex networks in epidemic simulation for unfolding the relationships between human beings, local information mechanism was designed to reveal the differences among people and others to approximate reality. However, previous studies indicate that some local diversity would not affect the simulation result. The population of weak individuals, for example, would cause the difference of simulation, but the distribution of weak individuals would not. Furthermore, we are also interested in the differences between the simulation under the small-world networks and the previous research without considering the relationship as simulation in the random networks. In this paper, we focused on the analysis of various network structures and local information, and conclude some reasons that might influence the epidemic simulations.
Hsu, Hui-Yu, and 許卉瑀. "Analysis of Information Delivery Dynamics in Cognitive Radio Ad Hoc Networks Using Epidemic Models." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/34067141204704547126.
Повний текст джерела國立臺灣科技大學
資訊工程系
103
Over the past decade cognitive radio (CR) is introduced to increase spectrum efficiency, however it on the other hand burdens the interference control between unlicensed secondary users (SUs) and primary users (PUs). In CR ad hoc networks (CRAHNs), such considerations in interference control become more complicated, where SUs adopt dynamic spectrum access and power adjustment to ensure sufficient operation of PUs, and the inevitably increasing latency poses new challenges on reliability of end-to-end communications. To guarantee operations of primary systems while fully optimizing system performance in CRAHNs, this thesis proposes interference-aware flooding schemes exploiting global timeout and vaccine recovery schemes to control the heavy buffer occupancy induced by packet replications. The information delivery dynamics of SUs under the proposed interference-aware recovery-assisted flooding schemes is analyzed via epidemic models and stochastic geometry from a macroscopic view of the entire system. The simulation results show that our model can efficiently capture the complicated data delivery dynamics in CRAHN in terms of end-to-end transmission reliability and buffer occupancy. Consequently this thesis sheds new light on analysis of recovery-assisted flooding schemes in CRAHN.
Kandhway, Kundan. "Optimal Control of Information Epidemics in Homogeneously And Heterogeneously Mixed Populations." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/2670.
Повний текст джерелаKandhway, Kundan. "Optimal Control of Information Epidemics in Homogeneously And Heterogeneously Mixed Populations." Thesis, 2016. http://etd.iisc.ernet.in/handle/2005/2670.
Повний текст джерелаChang, Yu-Chung, and 張又中. "Implementation of an Information System for Epidemic Alert ─ By Example of Monitoring Dengue Vector Development." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/pqhf36.
Повний текст джерела大同大學
資訊經營學系(所)
106
The purpose of this study is to develop an information system to predict spatial/temporal mosquito reproduction and disease outbreaks. Dengue fever has been studied since 200 years ago. There is no effective remedy or vaccine to control it. As a result, it can only be tackled by isolation, control, wiping out and other administrative methods. In order to monitor a region where there is a possibility of recurrence of dengue fever, the construction of a predictive information system would help the authority control disease outbreaks. The data used in this research are mainly dengue vector density indexes and daily meteorological information between 2010 and 2015 acquired from Taiwan Government Open Data Platform. The spatial/temporal relationships between larval density and dengue outbreaks were analyzed based on these historic data. The results were displayed on geographic information systems to facilitate convenient visualization. Finally, the information was presented on frontend page to support the authority for disease control and decision-making. This study makes use of climate and geographic information as the basis for the analytic model to forecast possible epidemic outbreaks in the next several days. This approach can be applied to other application areas such as influenza alerts. It could improve the effectiveness of disease prevention and reduce pandemic risk.
Tusuubira, Muwanga Fred. "A systematic review of available information concerning the economic impact of HIV/AIDS on Swaziland." Thesis, 2006. http://hdl.handle.net/10539/1605.
Повний текст джерелаABSTRACT Swaziland is currently faced with a deepening HIV/AIDS epidemic. A systemic review of available information concerning the economic impact of HIV/AIDS on Swaziland was undertaken to collate data and document this impact in order to inform decision makers and planners. The methodology for the systematic review was based on the guidelines described in the Cochrane Reviewers’ handbook. HIV/AIDS has significantly increased the vulnerability of affected Swaziland rural households to environmental shocks. There is an increased burden of orphans due to HIV/AIDS, reduced household labour and income as adults die of AIDS. HIV/AIDS has reduced farm productivity leading to worsening of food insecurity and poverty in affected households. Due to HIV/AIDS, absenteeism in Swaziland organizations has increased by 20- fold. HIV/AIDS is currently the leading cause of death accounting for over 60 percent of all employee deaths. Organisations that have implemented HIV/AIDS workplace responses have been less affected. The micro-sector is the worst affected and it is recommended that policy makers ensure that this sector is protected from the negative impact of HIV/AIDS. The epidemic of negative impacts of HIV/AIDS in Swaziland has not yet reached the peak.
"Study of an Epidemic Multiple Behavior Diffusion Model in a Resource Constrained Social Network." Master's thesis, 2013. http://hdl.handle.net/2286/R.I.20967.
Повний текст джерелаDissertation/Thesis
M.S. Computer Science 2013
Waldhorst, Oliver P. [Verfasser]. "Design and quantitative analysis of protocols for epidemic information dissemination in mobile ad hoc networks / von Oliver P. Waldhorst." 2005. http://d-nb.info/998337080/34.
Повний текст джерелаHuang, Chung-Yuan, and 黃崇源. "Small-World Epidemiological Modeling and Public Health Policy Assessment: Using the Social Mirror Identity Concept and Local Information for Network-based Epidemic Simulations." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/51399228404260686441.
Повний текст джерела國立交通大學
資訊工程系所
94
The purpose of this dissertation is to explore the importance, advantages, applications, validation standards, and evaluation procedures of computational modeling and simulation in the social sciences. I will present two original social simulation studies in detail. In the first, computational modeling and simulation are used to investigate the transmission dynamics of epidemics and to evaluate the effectiveness of various public health policies and epidemic prevention strategies. A novel social mirror identity concept is proposed to represent social phenomena such as individual long-distance movement, daily visits to fixed locations, and multiple activity locations. The cellular automata concept is also utilized to construct a small-world social network model that represents human interactions and daily contacts. To test these concepts, I simulated the 2003 SARS outbreaks that occurred in Taipei, Singapore, and Toronto. The simulation results, which were highly consistent with actual epidemic data, corresponded with local outbreak trends and features. The simulation model was shown to be suitable for investigating public health policies and epidemic prevention strategies. In the second study I investigated the influence of local information on social simulations based on a small world model. I introduced a cellular automata-based variation with added shortcuts as a test platform for simulating the spread of an epidemic disease, then examined the influences of various local information factors on the results. It is my hope that these efforts will help future researchers determine appropriate simulation parameters, clarify operational procedures, and access meaning from simulations.
(8083247), Yong Hoon Kim. "INTEGRATED MODELING FRAMEWORK FOR DYNAMIC INFORMATION FLOW AND TRAFFIC FLOW UNDER VEHICLE-TO-VEHICLE COMMUNICATIONS: THEORETICAL ANALYSIS AND APPLICATION." Thesis, 2019.
Знайти повний текст джерелаBotha, Robert Anthony. "The James 1:27 trust programme : a case study of an information, communication and technology (ICT) response to orphans and vulnerable children in the context of an HIV and AIDS epidemic." Diss., 2010. http://hdl.handle.net/10500/3908.
Повний текст джерелаSocial Work
M.A. (Social Behaviour in HIV/AIDS))
Chen, Kuo-jen, and 陳國珍. "An Exploratory Study about users’ intention of Kaohsiung City Government Bureau of Education Physical Education and Health Management System Subsystem -" influenza epidemic reporting system" Based on the Technology Acceptance Model and Information System." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/75866024350106348997.
Повний текст джерела國立屏東教育大學
數位學習教學碩士學位學程
99
The main purpose of this study is through technology acceptance model and information system success model concept, conducted by questionnaire survey and analysis of the user for the " Influenza epidemic reporting system " intended use, user satisfaction and willingness to use. This study also discuss the differences and relatedness of students’ attitudes toward influenza epidemic reporting system among their different backgrounds. According to this study and the results of the questionnaire, some conclusions will be suggested as follows: 1. The users are willing to take advantage of the "Influenza epidemic reporting system". 2. Using attitude of the users toward the "Influenza epidemic reporting system" influences their willingness to use it. The result conforms to theory of technology acceptance model. 3. Users’ satisfaction of the users about the "Influenza epidemic reporting system" influences their willingness to use it. The result conforms to theory of DeLone and McLean’s model of information systems (IS) success. 4. The users of different backgrounds are different from using intention、satisfaction and users’acceptance.
Kotnis, Bhushan. "Analysis and Control of Cascades in Complex Networks." Thesis, 2018. http://etd.iisc.ac.in/handle/2005/4165.
Повний текст джерелаMinistry of Human Resource Development, Government of India
Lindemann, Christoph, and Oliver P. Waldhorst. "Exploiting epidemic data dissemination for consistent lookup operations in mobile applications." 2004. https://ul.qucosa.de/id/qucosa%3A32823.
Повний текст джерелаΚουνετάς, Κωνσταντίνος. "Το "παράδοξο της ενέργειας" στην ελληνική βιομηχανία : έκταση, υιοθέτηση τεχνολογιών εξοικονόμησης ενέργειας και αντιρρύπανσης και επιδράσεις στην απόδοση, αποτελεσματικότητα και παραγωγικότητα". Thesis, 2007. http://nemertes.lis.upatras.gr/jspui/handle/10889/1505.
Повний текст джерелаThe improvement for energy efficiency is generally viewed as an important option to reduce greenhouse gas emissions and environmental damage caused by other pollutants (e.g. NOX,SOX). Moreover, is clearly interwoven with the exploitation of new and innovative technologies through the production process and its consequent paradox, the so called “energy efficiency paradox”. This paradox has recently attracted the interest of researchers and organizations (IEA,OECD) in an attempt to bring to light the source of it, the causalities between the adoption of energy efficient technology (EET) and the behaviour of firms . Three research questions have been examined in the specific Phd Thesis. Our first main research question were examined by formulating and testing the following hypothesis: the decision of the firms to adopt or not EET, is correlated to their profitability. Our second research project develops in two stages. The first stage aims at examining the factors influencing retrieval of information concerning EETs by manufacturing firms, while at the second stage we distinguish between readily available and emerging energy efficiency technologies and examine the factors affecting information acquisition for each one of these two broad sets of technologies. Finally, in order to disentangle firm’s heterogeneity we developed a methodological framework to calculate total factor productivity and its components differences arising from EETs adoption. Our first research question examines the energy efficiency paradox demonstrated in Greek manufacturing firms through a partial observability approach. Maximum likelihood estimates that arise from an incidental truncation model reveal that the adoption of the energy saving technologies is indeed strongly correlated to the returns of assets that are required in order to undertake the corresponding investments. The source of the energy efficiency paradox lies within a wide range of factors. Policy schemes that aim to increase the adoption rate of energy saving technologies within the field of manufacturing are significantly affected by differences in the size of firms. Finally, mixed policies seem to be more effective than polices that are only capital subsidy or regulation oriented. Answering the second research question, we aim to redefine the notion of awareness regarding the adoption of EETs. In a second stage we explore the crucial factors that affect the information level of EET adopters, distinguishing between epidemic and emerging technologies information. Our empirical findings reveal that the main factor that exerts positive influence on the level of information acquired by the firms may be encompassed in a set of variables that reflect what may be called a “business culture” regarding the EET Finally, we examined the impact of EETs adoption to Greek manufacturing firms operating under heterogeneous technology sets and we measured the components of total factor productivity (TFP) and its components arising from scale and technological differences. In order to examine our research questions we formulate a unique database. Our database came to light from the necessity of the Greek government to conserve energy in manufacturing and to reduce dangerous emissions in order to meet the criteria of the Kyoto Protocol. An extensive questionnaire was addressed to the 298 firms across the country that adopt EETs that have been subsidized from (i) the Support Frameworks for Regional and Industrial Development, (ii) the Energy Operational Program (OPE), which was part of the second European Union Support Framework (1994-2000) and (iii) the Operational Program ‘Competitiveness’, which is part of the third European Union Support Framework (2000-2006). Finally, 161 of them agreed to be interviewed on the basis of the questionnaire. Face to face interviews took place in the first six months of 2004. Additional data derived from ICAP financial database.