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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.
1

An intelligent pedestrian device : social, psychological and other issues of feasibility

Armsby, Pauline M. January 1996 (has links)
An Intelligent Pedestrian Device (IPD) is a new concept in pedestrian safety. It is defined as a microprocessor based information device which detects the approach of oncoming vehicles and informs the pedestrian whether or not it is safe to cross. IPDs could be portable or fixed to a roadside station. They could help reduce pedestrian accidents, which cost £2681 million in the UK in 1994. This study aims to assess whether the concept is socially acceptable and what the design criteria might be. A study of social acceptance involved group interviews of 5-10 participants with 84 pedestrians in five categories: adults aged 18-60, elderly aged 65+, visually restricted, parents of children aged 5-9 and children aged 10-14. The results suggest that vulnerable pedestrians are more positive about the device than the more able-bodied. Theories that may help explain this are discussed and it is concluded that, with education and marketing, the IPD could gain a degree of social acceptance. Observation of more than 900 pedestrian crossing movements at four different sites showed a range of behaviours, and that people often take risks in order to reduce delay. IPDs will require pedestrians to change some of their behaviours, especially those that are risky. Legal acceptance will demand high levels of costly product research and development, and a portable device will not be technologically feasible until well into the next century. However, the wider social benefits of IPDs may be worth the costs. An outline of design criteria for basic and sophisticated portable IPDs is given, and alternative functions are suggested. It is recommended that further work concentrate on developing software and hardware for fixed modes of IPD. It is concluded that, ultimately, acceptance will probably depend on whether Government decides that the IPD has a place in the road environment of the future.
2

Design of Safety Device of A Large Lithium Battery Cell

Hung, Chun-jui 02 September 2009 (has links)
In recent years, LEV and hybrid has been gradually popularized due to the energy crisis and increasing environmental awareness. The prevalence of LEV is to use batteries to replace the power from the gasoline. Secondary lithium battery is a good option for LEV since it has the features of light weights, high power density, long life, low pollution, and works without memory effect. However, the safety is a concern for end-users with more and more recalls of lithium-ion batteries involving the explosions. The purpose of this research is to propose a systematic approach of battery safety device with an engineering design method. The analysis on the factors affecting the safety is prior to the objective of this study as to define the specification of the battery safety device. Then, substance-field analysis and standard is to improve the initial systematic model, and the solution is specified with the synthesis of morphological matrix. Under the safety test for batteries, the effectiveness and feasibility of protected device is eventually verified.
3

O medo da morte como dispositivo de segurança que atua sobre a vida e a normalização dos sujeitos / The fear of death as a safety device that works on life and the standardization of the subjects

Fernandes, Jaquelinne Alves 22 February 2018 (has links)
Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2018-03-12T11:46:03Z No. of bitstreams: 2 Tese - Jaquelinne Alves Fernandes - 2018.pdf: 2241990 bytes, checksum: da296aa4a7e0f3e9d6edded217de5c8a (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-03-12T14:11:57Z (GMT) No. of bitstreams: 2 Tese - Jaquelinne Alves Fernandes - 2018.pdf: 2241990 bytes, checksum: da296aa4a7e0f3e9d6edded217de5c8a (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-03-12T14:11:57Z (GMT). No. of bitstreams: 2 Tese - Jaquelinne Alves Fernandes - 2018.pdf: 2241990 bytes, checksum: da296aa4a7e0f3e9d6edded217de5c8a (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2018-02-22 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / The study that we propose is based on the Analysis of the Speech of French line, from a theoretical perspective of Michel Foucault. Our purpose was to verify how fear of death acts as a security device, today, in the security society, for the purpose of controlling and preserving life. Thinking about this, we assume that, according to Foucault (2008), it is only possible to live in society through power relations, which are certified by devices, among them the security device. We believe that fear of death was produced by the security society, constituting itself as a mechanism of power, that acts in society, acting on the subjects, and can be taken as a device. This way, the fear of death is a device in the security society and, in order for it to function properly and achieve the desired purpose, the preservation of life, it is necessary for society to be normalized. Therefore, fear of death is a security device that acts in the security society, regulated by norms, with the purpose of regulating life, through biopower. In the modern state, it is a social norm to use mechanisms and technologies that work to preserve life and reduce risks; and norms are responsible, also, for the objectification and subjectivation of the subjects. Thus, the constitution of the normal subject (that follows the norms) and of the abnormal subject (the one that does not follow the norms) occurs according to the norms, among them the one that determines that the life must be preserved. For our study, we chose as analysis corpus the films Apocalypse Now and Falling Down; and the sixth season of The Walking Dead to evidence the fear of death acting as a security device and its relation to the norm. Trough our analyzes we could establish that the subjects of the corpora are constituted as abnormal because they do not subjectivize themselves by the norm that determines that life should be preserved, nor do they constitute the functioning of the fear of death as a security device. / O estudo a que nos propusemos está pautado na Análise do Discurso de linha francesa, a partir de uma perspectiva teórica de Michel Foucault. Nosso propósito era verificar a maneira como o medo da morte atua como dispositivo de segurança, na atualidade, na sociedade de segurança, com a finalidade de controlar e preservar a vida. Pensando nisso, presumimos que, conforme Foucault (2008), só é possível viver em sociedade por intermédio das relações de poder, que são certificadas por dispositivos, dentre eles o dispositivo de segurança. Acreditamos que o medo da morte foi produzido pela sociedade de segurança, constituindo-se como mecanismo de poder, que atua na sociedade, agindo sobre os sujeitos, podendo ser tomado como um dispositivo. Portando, o medo da morte é um dispositivo na sociedade de segurança e, para que opere adequadamente e atinja o propósito desejado, a preservação da vida, é necessário que a sociedade seja normatizada/normalizada. Portanto, o medo da morte é um dispositivo de segurança que atua, na sociedade de segurança, regulamentado por normas, com o intuito de regulamentar a vida, por meio do biopoder. No estado moderno, é uma norma social a utilização de mecanismos e tecnologias que atuem em favor da preservação da vida e da redução dos riscos; e as normas são responsáveis, também, pela objetivação e subjetivação dos sujeitos. Assim, a constituição do sujeito normal (que segue as normas) e do sujeito anormal (aquele que não segue as normas) ocorre em função das normas, dentre elas a que determina que a vida deve ser preservada. Para nosso estudo, escolhemos como corpora de análise os filmes Apocalypse Now e Um dia de fúria; e a sexta temporada de The Walking Dead para evidencia o medo da morte atuando como dispositivo de segurança e sua relação com a norma. Por meio de nossas análises pudemos constar que os sujeitos personagens dos corpora se constituem como anormais por não subjetivar-se pela norma que determina que a vida deve ser preservada e nem tão pouco constituem-se pelo funcionamento do medo da morte como dispositivo de segurança.
4

Systémy vytápění a chlazení v kancelářských provozech / Heating and cooling systems in office operations

Dostál, Petr January 2020 (has links)
The diploma thesis deals with the design of the heating and cooling system, inclu-ding hot water preparation for the administrative part of the production hall. The first part of the thesis briefly discusses the history of heating and cooling of office buildings, legislative requirements and current solutions. The second part contains the design of the entire heating and cooling system with heat pump as a source of heat and cold. The final part of the thesis describes the experimental measure-ment and evaluation of the efficiency of the ice rink source.

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