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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.
331

The Impact of motion-sensing exercise games on young adults : Take “Ring Fit Adventure” as example

Li, Jiaxin January 2022 (has links)
With the continued expansion of the market share of video games and the growing numberof obese people in recent years, public and business interests in exercise games have been aroused. The period when exercise games emerged maybe can be counted down from AtariPuffer. In 1982, Atari created a home exercycle with two-hand grip controllers, a wheel speedpickup, and the necessary attachment for an Atari computer or 5200. Then following this breakthrough, a lot of new types of equipment combined with video games and fitness popped up. Among those new consoles, Nintendo Wii is one of the best sellers. Then after Wii Sports, a more comprehensive and professional exercise game, Ring Fit Adventure, came out in 2019. It sold around 10,110,000 copies until March 2021. Furthermore, over7.38 million came from April 2020 to March 2021 alone. (Resource from the Fiscal Year Ended March 2021 Financial Results Explanatory Material Nintendo Co., Ltd. May 6, 2021) This thesis aims to find more detailed reasons to explain why people start playing exercise games and how exercise games change their lives. Because all of the participants are Chinese, the conclusions drawn in this thesis may have some geographical characteristics. Although in China, there is still only a tiny percentage of people playing exercise games in recent years due to the COVID-19 pandemic and other reasons, this is a new trend that cannot be ignored.
332

Mechanisms for the recovery of type 2 diabetes mellitus following bariatric surgery

Gamby, Danielle Nicole 12 March 2016 (has links)
Studies have shown that following bariatric surgery, there is an almost immediate reversal of type 2 diabetes. However, there still remains questions as to why this occurs and what possible explanations there may be. This paper aims to focus on several studies that have found a reversal of diabetes in obese patients who have undergone bariatric surgery. Furthermore, it explores several possibilities for the reasons behind this reversal including the role of AMP-activated protein kinase, the incretins gastric inhibitory peptide and glucagon-like peptide-1, and also looks at genetics. Bariatric surgery and a description of certain mechanisms are first described for an understanding. Following is a literature review of published studies on bariatric surgery, the reversal of diabetes following the procedure, and roles of AMPK and incretins. Because of the possibility that reduced caloric intake may not be the major factor in the diabetic reversal, it is suggested that further research be done on obese and normal weight patients and observe the levels of the mentioned mechanisms and also various genes to see if they offer a more thorough explanation.
333

Silicon Carbide High Temperature Logic

Lee, Te-Hao January 2011 (has links)
No description available.
334

Modeling and Simulation of Altera Logic Array Block using Quantum-Dot Cellular Automata

Kapkar, Rohan Viren January 2011 (has links)
No description available.
335

IMPLEMENTATION OF A SILICON CONTROL CHIP FOR Si/SiC HYBRID OPTICALLY ACTIVATED HIGH POWER SWITCHING DEVICE

BHADRI, PRASHANT R. 21 May 2002 (has links)
No description available.
336

Fundamentals and Applications of Large Area Multi-Spectral State Electrophoretic Panels for Displays and Smart Windows

Mukherjee, Sayantika January 2015 (has links)
No description available.
337

Low Noise All Optical Switch and GeSn Laser for Silicon Photonics

Zhao, Yun 17 May 2016 (has links)
No description available.
338

Towards an Ideal Execution Environment for Programmable Network Switches

Gruesen, Michael G. January 2016 (has links)
No description available.
339

Permanenta klätterväxlar – en undersökning : Denna rapport innehåller intervjuer, litteraturstudie samt en fältundersökning med ljudnivåmätning

KLENCOVLJEVIC, Goran, Shuvo Khan, MD January 2020 (has links)
Swedish railway network is old, it is in need for maintenance and there is an ever-increasing volume oftraffic on todays railroads. Special trackwork component has taken increased abuse, leading to a stop intrain traffic and many delays occur, especially during the winter season. The most sensitive parts of therailway network are turnout frogs and they require the most maintenance and cause delays. Therefore, TheSwedish Transport Administration is planning to investigate and introduce a new type av railwayswitches, called flange bearing technology. Flange bearing frogs and diamonds are already in use in USand there are already benefits in both reduced maintenance and increased life expectancy and possiblyreduced noise level.Therefore, this bachelor thesis is investigating flange bearing technology with an accent on sound levelmeasurement. It is studied how flange bearing frogs works and how they differ from conventional treadbearing frogs. In addition, there is a field study with sound level measurement and interviews withemployees at The Swedish Transport Administration. Furthermore, it is investigated how flange bearingtechnology is used in US. This bachelor thesis is limited to a field research with sound level measurement,interviews, and a theoretical description of railway switches. Field study is located at a flange bearingfrog, station Globen-Gullmarsplan in Stockholm. This flange bearing frog is used as a connection betweenthe tram railway and the metro railway.Flange bearing technology has a simpler design compared to conventional tread bearing frogs. This simpledesign can provide benefits by reducing vertical dynamic loads. Flange bearing means that unsupportedflangeway gap is eliminated from the running surface of the frog. For that reason, there is no speedreduction on the main track. Conventional tread bearing frogs have unsupported flangeway gap thatwheels must cross.Field study at Globen-Gullmarsplan was carried out with the help of a sound level meter and it wasperformed eight measurements at both flange bearing frog and conventional tread bearing frog. This studyshows that flange bearing frogs causes less noise than conventional tread bearing frog. Interviews showsthat The Swedish transport Administration is working to reduce noise interference from rail traffic andthat flange bearing technology can be a good solution for achieving lower noise level. However, moreresearch is required about maintenance, comfort, cost, and life expectancy of flange bearing technology.
340

Driver Based Soft Switch for Pulse-Width-Modulated Power Converters

Yu, Huijie 17 March 2005 (has links)
The work in this dissertation presents the first attempt in the literature to propose the concept of "soft switch". The goal of "soft switch" is to develop a standard PWM switch cell with built-in adaptive soft switching capabilities. Just like a regular switch, only one PWM signal is needed to drive the soft switch under soft switching condition. The core technique in soft switch development is a built-in adaptive soft switching circuit with minimized circulation energy. The necessity of minimizing circulation energy is first analyzed. The design and implementation of a universal controller for implementation of variable timing control to minimize circulation energy is presented. The controller has been tested successfully with three different soft switching inverters for electric vehicles application in the Partnership for a New Generation Vehicles (PNGV) project. To simplify the control, several methods to achieve soft switching with fixed timing control are proposed by analyzing a family of zero-voltage switching converters. The driver based soft switch concept was originated from development of a base driver circuit for current driven bipolar junction transistor (BJT). A new insulated-gate-bipolar-transistor (IGBT) and power metal-oxide-semiconductor field-effect-transistor (MOSFET) gated transistor (IMGT) base drive structure was initially proposed for a high power SiC BJT. The proposed base drive method drives SiC BJTs in a way similar to a Darlington transistor. With some modification, a new base driver structure can adaptively achieve zero voltage turn-on for BJT at all load current range with one single gate. The proposed gate driver based soft switching method is verified by experimental test with both Si and SiC BJT. The idea is then broadened for "soft switch" implementation. The whole soft switched BJT (SSBJT) structure behaves like a voltage-driven soft switch. The new structure has potentially inherent soft transition property with reduced stress and switching loss. The basic concept of the current driven soft switch is then extended to a voltage-driven device such as IGBT and MOSFET. The key feature and requirement of the soft switch is outlined. A new coupled inductor based soft switching cell is proposed. The proposed zero-voltage-transition (ZVT) cell serves as a good candidate for the development of soft switch. The "Equivalent Inductor" and state plane based analysis method are used to simply the analysis of coupled inductor based zero-voltage switching scheme. With the proposed analysis method, the operational property of the ZVT cell can be identified without solving complicated differential equations. Detailed analysis and design is proposed for a 3kW boost converter example. With the proposed soft switch design, the boost converter can achieve up to 98.9% efficiency over a wide operation range with a single gate drive. A high power inverter with coupled inductor scheme is also designed with simple control compared to the earlier implementation. A family of soft-switching converters using the proposed "soft switch" cell can be developed by replacing the conventional PWM switch with the proposed soft switch. / Ph. D.

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