Para el desarrollo del presente trabajo se realizó una investigación de mercado identificando que existe la necesidad de contratar servicios técnicos para el hogar que garantice seguridad y calidad, a la vez, existe la oferta de empleo de técnicos de servicios generales, por ello, el modelo de negocio Multiservicios ABC Workforce consiste en comercializar a través de su plataforma web los servicios técnicos para el hogar tales como: electricidad, gasfitería, cerrajería y pintura que serán realizados por técnicos capacitados y calificados en el domicilio del cliente cumpliendo las medidas de seguridad contra COVID-19. En tal sentido, los servicios están dirigidos al segmento de hogares del NSE A, B y C ubicados en los distritos de la zona Moderna de Lima Metropolitana que son consumidores con estilo de vida sofisticado y moderno que valoran la calidad y practicidad, por ello, como propuesta de valor del servicio técnico para el hogar es entregar trabajos de calidad que generen en el cliente una experiencia de seguridad, garantía y ahorro de tiempo. Cabe mencionar, los servicios técnicos para el hogar serán distribuidos por el canal directo utilizando como medio de captación de clientes: la plataforma web, Google Ad, redes sociales y alianza con empresas administradoras de condominios y departamentos. Además, es clave que el proceso de entrega del servicio técnico se realice de manera eficiente y oportuna, por ello, primero se realizará una cotización según los requerimientos del cliente en base precios competitivos del mercado. / For the development of this project market research was carried out to identify the necessity to hire a technical service for each home that brings security and quality about the services it offers. Also, there are job offers for technicians in general. This business model “Multiservicios ABC Workforce” is to market the technical services for the home across its web platform such as electricity, plumbing, locksmithing and painting that will be to carry out by trained and qualified technicians at customer’s home with precautionary measures against COVID-19. In this regard, the services are directed to home segment of NSE A, B and C whose are in the districts of Lima Metropolitana modern that are consumers with a sophisticated and modern lifestyle who value the quality and practicality services. Therefore, home technical service value proposition, it is to deliver jobs that generates safety, guarantee and time-saving experience for the customer. It is also important to mention that technical services for homes will be distributed through the direct channel of customer acquisition by web platform, Google Ad, social networks and real states and condominium administrators. Furthermore, it is a key that the services delivery process must be made in an efficient and timely manner. For that, quotation will be performed first according to customer requirements based on competitive market prices. / Trabajo de investigación

Greywater is waste water from washbasins, showers, baths, kitchen sinks, dishwashers and washing machines. This can be treated to gain so-called white water, which can for example be used for flushing toilets and urinals, watering greenery or for cleaning. The subject of this diploma thesis is to state the possibilities for utilisation of greywater. In the first part of this thesis, research will be elaborated on the given topic. In the following chapters, I would like to state examples of the possibilities for utilisation of greywater. The practical part should consist of design of a system for treatment of greywater in a specific building.

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Heat sinks are used mainly to take away the excessive heat which are produced in a component. This transfer of heat enables a smooth operation of the system with the heat generating component. The efficiency of heat sink is often dependent on the amount of heat it can take away within the smallest duration of time. Several designs and manufacturing techniques have been developed to improve this performance of heat sinks. This project aims at building a test rig which can be used to test the efficiency of heat sinks. The test rig should be designed to be modular, i.e. it should be able to test heat sinks of different sizes and also adhering to the design requirements. The project started with a broad information search on heat sinks and different testing methods. A system architecture was formulated for this test rig as a beginning stage and to find the different architectural components. The main principal components were selected fulfilling the design requirements. A chiller with pump, a flow meter with controller, temperature and pressure sensors and piping’s including a flexible pipe were the main components of the system created. When the specific components were chosen, the design was embodied and the components were arranged in a compact manner as a SolidEdge CAD-model. After several design iterations, a final design was selected. The experimental test rig was then built in the flow lab. The built experimental test setup is able to be adjusted to install heat sinks of different sizes making it modular in design. Future work to improve the performance of the test rig is also suggested. / Värmesänkor, som exempelvis kylflänsar, används främst för att transportera bort värme som orsakas av förluster i en komponent. Denna värmeöverföring möjliggör en smidig drift av systemet där den värmegenererande komponenten ingår. Värmesänkans effektivitet beror på hur mycket värmeeffekt den kan transportera bort. Flera olika konstruktioner och tillverkningstekniker har utvecklats för att förbättra värmesänkors kylprestanda. Målet med detta projekt är att bygga en testrigg som kan användas för att testa kylflänsars effektivitet. Testriggen ska utformas så att den är modulär, dvs. den ska kunna användas för att testa kylflänsar av olika storlekar. Projektet startade med en bred informationssökning om kylflänsar och olika testmetoder. En systemarkitektur skapades som ett början och för att hitta systemets olika principkomponenter. De viktigaste huvudkomponenterna som uppfyllde designkraven valdes sedan. En kylare med pump, en flödesmätare med regulator, temperatur- och tryckgivare och rörledningar, inklusive ett flexibelt rör var de viktigaste komponenterna i det system som skapades. De specifika komponenterna valdes sedan och de representerades och arrangerades på ett kompakt sätt som en system-CAD-modell i SolidEdge. Efter flera iterationer valdes en slutlig konstruktion, och den experimentella testriggen byggdes sedan i flödeslaboratoriet. Den experimentella testriggen kan justeras för att installera kylflänsar av olika storlekar, vilket innebär att den, i viss mån, är modulär. Framtida arbeten för att förbättra testriggens prestanda föreslås också.

Pinhole leaks in copper plumbing pipes are a big concern for the homeowners. The problem is spread across the nation and remains a threat to plumbing systems of all ages. Due to the absence of a single acceptable mechanistic theory no preventive measure is available to date. Most of the present mechanistic theories are based on analysis of failed pipe samples however an objective comparison with other pipes that did not fail is seldom made. The variability in hydraulic and water quality parameters has made the problem complex and unquantifiable in terms of plumbing susceptibility to pinhole leaks. The present work determines the spatial and temporal spread of pinhole leaks across United States. The hotspot communities are identified based on repair histories and surveys. An assessment of variability in water quality is presented based on nationwide water quality data. A synthesis of causal factors is presented and a scoring system for copper pitting is developed using goal programming. A probabilistic model is presented to evaluate optimal replacement time for plumbing systems. Methodologies for mechanistic modeling based on corrosion thermodynamics and kinetics are presented. / Master of Science

Pinhole corrosion leak in home plumbing has emerged as a significant issue. In the major water distribution system managed by municipalities and water utilities the costs are distributed among all subscribers. The home plumbing repair/replacement cost and possible water damage cost must be addressed by the home owner. There are also issues of the value of home, insurance rates, health consequences, and taste and odor problems. These issues have become major concerns to home owners. Cradle to grave life cycle assessment is becoming an integral part of industrial manufacturing. In this thesis comprehensive details pertaining to life cycle assessment are presented. Copper tubing for plumbing installations is mainly obtained from recycled copper. Various stages of copper plumbing pipe manufacturing are explained. A comprehensive synthesis of various corrosion mechanisms is presented. Particular reference is given to copper plumbing pipe corrosion. A decision support tool for replacing copper plumbing pipes is presented. The deterioration process is grouped into early, normal and late stages. Because available data reflects late stage process, an optimization, neural network and curve fitting models are developed to infer early and normal stage behavior of the plumbing system. Utilizing the inferred leak rates a non-homogeneous poisson process model is developed to generate leak arrival times. An economically sustainable replacement criterion is adopted to determine optimal replacement time. / Master of Science

本研究是以 司徒達賢教授「產業價值鏈」、「策略形態分析法」及「網絡定位分析法」做為分析架構，試圖分析一家新創貿易商的事業策略及網絡定位，並探討其策略成功之環境前提與條件前提。 個案選擇雖是一家特定公司在特定市場的成功案例，並不足以作一般化的推論，但仍可供參考。主要之初步結論如下： 1. 貿易商創立極為不易，但若能找到自己所擅長的市場和產品，藉著本身既有快速、彈性、機動的條件，針對某些價值活動和特定的目標市場作深入的掌握和聚焦，必能獲得成功。 2. 貿易商可以藉由交易對象的選擇與組合，以創造有利的網絡 定位。上、下游交易對象的家數多、規模小、向前或向後整合的 能力或意願低，則貿易商較能確保其有利的生存空間。 關鍵詞:策略管理 貿易商 衛浴產業 策略形態 產業價值鏈

There has been an increasing amount of interest shown in vocational education and apprenticeships in the early twenty-first century by successive governments and other parties connected with occupational training. However, the English further education sector has been described as ‘chronically under-researched’ (James and Biesta, 2007: 7), particularly in regard to narrative accounts of college education and pedagogy (Richardson, 2007) and there has been very little empirical research on pathways into the plumbing profession. This study explored teachers’ and students’ perceptions and experiences of both full-time college courses and apprenticeships in plumbing in order to deepen understanding of these particular types of vocational preparation. It also endeavoured to investigate whether the two different routes into plumbing appeared fit for purpose. Within an interpretive framework, data were collected using two main research methods. Ethnographic snapshot observations were recorded during lessons in three further education colleges and at the workplaces of five plumbing students and formal 1:1 semi-structured interviews were conducted with 15 tutors and 14 students. The data were thematically analysed. From the many issues relating to the opportunities offered and the challenges posed by the different pathways into plumbing that this study identified, three key findings emerged. First, there was strong evidence of a dislocation between theory and practical learning, both within the college setting for full-time students and between the workplace and college settings for apprenticed learners. This had implications for both the quality of learning and the learners’ levels of motivation. Second, the study revealed the importance of supervised work experience that was centred on long-term acquisition of knowledge and relationship development for apprentices with support from their college tutors and co-workers. Finally, the findings showed the importance of authentic assessment. It was found that simulations in college could not adequately replicate the experience of doing the job in the real world. Given the inherent risks and problems regularly encountered in the plumbing profession, this signalled significant health and safety implications.

The ideas within this thesis are meant to clarify my explorations, research and painting practice during my studies at Virginia Commonwealth University. I expand on my general statements about being fascinated by advancing technologies and concerned about the after effects of these advancements. The writing explores my curiosity about the internal, skeletal structure of things and how they operate. I explain how the paintings are idiosyncratic hybrids that evoke animation, imaginary scientific propositions, blueprints, maps, and advancing technologies. The work combines these interests with my observations of day-to-day experiences. Isolated events provide found compositions which I then manipulate: a seemingly mundane bike ride gets mapped into a well–ordered schematic of social interaction.

Underground its continental shelf and economic zone territory in the Baltic Sea starting with the surface of subsoil rocks on land and the surface of the bottom sediments in land waters and the sea. In this work you can survey the situacion of mining minerals of Lithuania, the natural resourses of minerals. This dissertation also includes analyses of the underground law, its management and mining. The serious consideration has been paid to drinking-water in Lithuania its management, quality, this quality control problems and also all the ways of the water exploitation has been discussed. You will get all the information about “Vilniaus vandenys” company’s quality management system, which passed international ISO 9001:2000 quality standarts requirements.