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Bang Lamung, Thailand

Asian University , formerly Asian University of Science and Technology and founded in 1993, initially with the academic co-operation of Imperial college in London is an international university using English as the medium of instruction for all programs and is located in Chonburi, Thailand, about 25 km from Pattaya. Wikipedia.

Silapunt R.,King Mongkuts University of Technology Thonburi | Torrungrueng D.,Asian University
Progress in Electromagnetics Research | Year: 2011

Conjugately characteristic-impedance transmission lines (CCITLs) are a class of transmission lines possessing conjugately characteristic impedances (Z±0) for waves propagating in the opposite direction. A typical Z0 uniform transmission line is a special case of CCITLs whose argument of Z±0 is equal to 0°. This paper aims to generalize the CCITL system by demonstrating a theoretical study of CCITLs and their applications in the microwave transistor amplifier design. It is found that the bilinear transformation plays an important role in transforming circles in the reflection coefficient g{cyrillic}0-plane in the Z0 system to the g{cyrillic}-plane in the CCITL system. In addition, Meta- Smith charts, a graphical tool developed for solving problems in the CCITL system, are employed to design matching networks to achieve desired amplifier properties. Results show that stability regions on Meta-Smith charts can be determined, and source and load reflection coefficients can be selected properly to obtain desired operating power gain. In addition, an example shows that Meta-Smith charts offer a simple approach for matching network design using open-circuited single-stub shunt tuners. Source

Ma P.,State University of New York at Stony Brook | Wang L.-S.,State University of New York at Stony Brook | Guo N.,Asian University
Applied Energy | Year: 2014

A case is made that while it is important to mitigate dissipative losses associated with heat dissipation and mechanical/electrical resistance for engineering efficiency gain, the "architect" of energy efficiency is the conception of best heat extraction frameworks-which determine the realm of possible efficiency. This precept is applied to building energy efficiency here. Following a proposed process assumption-based design method, which was used for determining the required thermal qualities of building thermal autonomy, this paper continues this line of investigation and applies heat extraction approach investigating the extent of building partial homeostasis and the possibility of full homeostasis by using cooling tower in one summer in seven selected U.S. cities. Cooling tower heat extraction is applied parametrically to hydronically activated radiant-surfaces model-buildings. Instead of sizing equipment as a function of design peak hourly temperature as it is done in heat balance design-approach of selecting HVAC equipment, it is shown that the conditions of using cooling tower depend on both "design-peak" daily-mean temperature and the distribution of diurnal range in hourly temperature (i.e., diurnal temperature amplitude). Our study indicates that homeostatic building with natural cooling (by cooling tower alone) is possible only in locations of special meso-scale climatic condition such as Sacramento, CA. In other locations the use of cooling tower alone can only achieve homeostasis partially. © 2014 Elsevier Ltd. Source

Ma P.,State University of New York at Stony Brook | Wang L.-S.,State University of New York at Stony Brook | Guo N.,Asian University
Applied Energy | Year: 2015

In two earlier papers we proposed a process assumption- based design method, one aim of which is the determination of the thermal requirement of a building by investigating the building functioning as a dynamic thermal system. The principal constraint of that determination is the building indoor temperature range to be no more than 2. °C. In this paper we focus on the thermal requirement of maximum WWR (window-to-wall ratio) allowed by the constraint as a function of envelope U-value and ambient temperature amplitude. Seven US cities are studied to represent a range of ambient temperature amplitudes. As the window part of a building's envelope is a prominent architectural feature of the building, WWR and its allowed maximum in terms of thermal autonomy are the signature/reflection of local ambient temperature amplitude and the variety of envelopes of building stock in each locality. Such signal characteristics are otherwise referred to as regional architecture. © 2015 Elsevier Ltd. Source

Busapathumrong P.,Asian University
Journal of Social Work in Disability and Rehabilitation | Year: 2013

This project explores disaster management in Thailand with a focus on the vulnerability and resilience of women, children, the elderly, and the disabled population and on the impact of disaster on these subpopulations. The 2 main findings deal with the major models of disaster management in Thailand and building resilience for social recovery. The selected 5 major models currently employed in disaster management in Thailand are the (a) model of royal project and international cooperation on disaster preparedness and response, (b) ASEAN Socio-Cultural Blueprint, (c) rights-based approach, (d) welfare mix model, and (e) knowledge management model. © 2013 Copyright Taylor and Francis Group, LLC. Source

Hawes T.C.,Asian University
Cryo letters | Year: 2014

At temperatures below their temperature of crystallization (Tc), the extracellular body fluids of insects undergo a phase transition from liquid to solid. Insects that survive the transition to equilibrium (complete freezing of the body fluids) are designated as freeze tolerant. Although this phenomenon has been reported and described in many Insecta, current nomenclature and theory does not clearly delineate between the process of transition (freezing) and the final solid phase itself (the frozen state). Thus freeze tolerant insects are currently, by convention, described in terms of the temperature at which the crystallization of their body fluids is initiated, Tc. In fact, the correct descriptor for insects that tolerate freezing is the temperature of equilibrium freezing, Tef. The process of freezing is itself a separate physical event with unique physiological stresses that are associated with ice growth. Correspondingly there are a number of insects whose physiological cryo-limits are very specifically delineated by this transitional envelope. The distinction also has considerable significance for our understanding of insect cryobiology: firstly, because the ability to manage endogenous ice growth is a fundamental segregator of cryotype; and secondly, because our understanding of internal ice management is still largely nascent. Source

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