En studie av kopparvävens egenskaper i kombination med ljus.A study of the copper weave characteristics, in combination with light. / Program: Textildesignutbildningen

A thesis submitted for the Master of Arts in German. This thesis is in German.

According to the regulation announced by Bureau of Standard, Metrology & Inspection (BSMI) of Ministry of Economic Affairs (MOEA), lamp fixtures must follow safety and electromagnetic compatibility (EMC) standards. However, the self-ballasted fluorescent lamps in the fixture should only be approved by the safety test but not regulated by EMC standard. Obviously, fixtures without light bulbs do not generate any electromagnetic noise. Electromagnetic interference (EMI) comes from the fluorescent light bulb embedded with an electronic ballast which included an inverter with high-frequency switching. A variety of tests demonstrate evidently that a fixture with different self-ballasted compact fluorescent lamps may possibly violate the EMC standard, revealing the absurdity of the regulation. In fact, self-ballasted fluorescent lamps use mostly self-excited electronic ballasts. The operating frequencies for this kind of electronic ballasts can not be precisely controlled due to the influence of many factors. They are not operated at a specified frequency but in a frequency range. This means that the generated EMI spectrum is hardly predicted, especially when a fixture is fitted by light bulbs from several manufacturers. This research inducts the worst cases from numerous measurements on a fixture with 1 piece to 8 pieces of light bulbs, and then attempts to design an EMI filter for all cases. As a result, a lamp fixture with the filter at the line input terminal can suppress the EMI. As long as the consumer buys the lamp fixture which are installed with the EMI filter together with any bulb in use, EMI noise can comply with standard limits.

The background and motivation of this study are based on: (1) Energy saving and carbon emission reduction are the rising issues gaining more awareness and efforts worldwide. (2) Taiwan plans to build ¡§low-carbon cities¡¨ in order to implement the policy of greenhouse gas reduction. (3) The most direct and practical way to reduce carbon emissions is by saving energy. (4) Everyone has to use illumination sources. (5) ¡§Electro-Magnetic Induction Lamps¡¨ is a useful tool to achieve the goal of energy saving and carbon emission reduction. Thus the topic of this study is ¡§The Effectiveness Analysis and Strategy of Energy-efficient Lighting in Developing a Low Carbon City ¡V A Case on Electro-Magnetic Induction Lamps¡¨. The objectives of this study are: 1. To analyze the characteristics of ¡§Electro-Magnetic Induction Lamps¡¨ and their conformity with local and overseas energy-efficient lighting policies. 2. To analyze the effectiveness of lighting economics of the case companies before and after their adoption of ¡§Electro-Magnetic Induction Lamps¡¨. 3. To explore the possible obstacles and their solutions for lighting industry development of ¡§Electro-Magnetic Induction Lamps¡¨ in the public sectors¡¦ strategies to develop low-carbon cities in Taiwan. The main issues of this study are about energy-efficient lighting policies and the economical effectiveness of ¡§Electro-Magnetic Induction Lamps¡¨, which belong to policy research on energy-saving equipment and the lighting industry. Therefore three research methods: Literature Review, Case Study, and In-depth Interview were adopted to collect, compare, and analyze the data. The conclusions of this study are: 1. The characteristics of ¡§Electro-Magnetic Induction Lamps¡¨ are in conformance with energy-efficient lighting policies in Taiwan. 2. To provide the analysis result of the case companies¡¦ economic benefits after its adoption of ¡§Electro-Magnetic Induction Lamps¡¨. 3. To indicate the possible Dilemma of the lighting industry development of ¡§Electro-Magnetic Induction Lamps¡¨ and the energy-efficient lighting policies for the strategies to develop low-carbon cities in Taiwan. According to above research outcomes, three suggestions have been further proposed: 1. Users must change their concepts and habits of lighting usage in order to cultivate good energy-saving habits. 2. Users must select appropriate illumination sources according to their needs in order to achieve most effectiveness of lighting economics. 3. According to the needs of appropriate illumination sources, the government should promote and subsidize the development and use of ¡§Electro-Magnetic Induction Lamps¡¨.

This thesis provides investigation into the interaction between quartz lamp emitters and polyether ether ketone (PEEK) powder. Calculations and experiments concerning the conductivity and emissivity of the powder at various temperatures are performed. The thermal profile of the emitter on a flat powder bed is captured using thermal imaging. The effect of exposing a pile of powder to the emitter and the subsequent thermal gradient through the pile is measured and analyzed. Based on these results, ramifications for the application of these emitters to selective laser sintering (SLS) machines for processing high temperature polymers such as PEEK are discussed. / text

Scholarship on Archaic and Classical Greek lamps has traditionally been in the form of typological studies and catalogues. This dissertation represents an alternative to such works, offering a fuller picture of the function of lamps in Greek life. Incorporating archaeological, iconographic, and literary evidence, the study takes a gendered approach to lamp use, examines the objects’ social and symbolic functions, and explores their conceptual place in Greek society. The core of the dissertation consists of three main chapters. Chapter two looks at women and lamps. It begins with an examination of the opening lines of Aristophanes’ Ekklesiazousai, and then assesses women’s lamp use in the home, where the objects helped women perform tasks ranging from early-morning baking to genital depilation. Their use by women at Athens during funeral processions is also considered. Indeed, women and lamps were closely linked during these periods. The objects came to symbolize domesticity and, by association, femininity. They also helped to create and perpetuate female stereotypes, and could be instrumental in controlling women’s behaviors. Women’s conceptions of their lamps grew from use: they saw them as quiet companions and perhaps emblems of burden. Chapter three investigates male lamp use. Lamps and their stands played a role in civic and private dining. They functioned on many levels within red-figure representations of the symposium, and these images offer clues about lamp use at actual symposia. When carried by individuals for street lighting, lamps facilitated travel in the dark while marking the social status of their users. Many literary references suggest that men connected the objects with the concept of exposure, of matters private as well as political, an idea connected to the objects’ use and symbolism in the female arena. Chapter four explores the significance of lamps in the contexts of burial and religion. To a certain extent, the association between women and lamps observed in the home obtained in these spheres, especially in graves on Sicily and in cults of female deities. The study and its findings expand our understanding of uses and perceptions of an often overlooked class of objects, and of gender and social dynamics in Archaic and Classical Greece. / The Classics

This study presents a look at the development of residential lighting in America and the technological and social factors which inspired the development. Availability of fuels, quality of light provided, daily care needed by a light source, and safety were all direct influences on the development of artificial lighting. Technological advances in response to the social needs began with the closed font and continued through the removable burner, accommodating a variety of fuels including tallow, lard, whale oil, burning fluids, kerosene, gas and ultimately electricity. Along with the increasing illuminating power, the amount of decoration, both possible and accepted, increased. / Department of Architecture

Revision of the author's paper (Theologischen Prüfungsamt der Nordelbischen Evangelisch-Lutherischen Kirche, 1989). / Bibliography: p. 85-98.

Revision of the author's paper (Theologischen Prüfungsamt der Nordelbischen Evangelisch-Lutherischen Kirche, 1989). / Bibliography: p. 85-98.

In regions with low energy access kerosene lamps are commonly used, and these emit carbon dioxide (CO2) as well as household air pollutants (HAP). This bachelor thesis examines the possible reduction of carbon dioxide equivalents (CO2eq) emissions and HAP from kerosene lamps by replacing them with off-grid solar powered lanterns. Life cycle assessment, or LCA, is used as a method to assess CO2eq emissions from the solar lanterns. Data on emissions from the different stages in the solar lantern lifecycle, as well as for the kerosene lamps, is gathered through literature studies. Furthermore, possible improvements of health and social aspects as result of replacing kerosene lamps are studied and discussed. The results show that CO2eq emissions could be significantly lower if solar lanterns were used. During a lifetime of 30 years, a simple kerosene lamp emits a total of 15 500 kg CO2eq, a hurricane lantern 7 900 kg CO2eq, whereas a solar lantern emits 66.1 kg CO2eq. However, it is found that the possible harmful effects of HAP are much larger than those of CO2. Finally, possibilities and challenges regarding implementation and usage of off-grid solar powered lanterns are identified and discussed.