Developing A Methodology In Aviation Risk Management Based On Susceptibility

Pengurusan penghidupan adalah satu konsep yang dikembangkan daripada konsep penghidupan kapal terbang perang. Survivability management is a concept evolves from aircraft combat survivability concept

Developing A Methodology In Aviation Risk Management Using Susceptibility And Vulnerability Application For Airline Concerning Air Crisis [TL553.5. N576 2007 f rb].

Pengurusan penghidupan adalah satu konsep yang dikembangkan daripada konsep penghidupan kapal terbang perang. Ia boleh dibahagikan kepada dua kategori, iaitu pengurusan kepekaan dan pengurusan kekuatan. Survivability management is a concept evolves from aircraft combat survivability concept. It can be divided into two main categories, namely susceptibility and vulnerability managemen

Periodic solutions of a derivative nonlinear Schrödinger equation: Elliptic integrals of the third kind

International Conference on Engineering and Computational Mathematics, The Hong Kong Polytechnic University, Hong Kong, 27–29 May 2009The nonlinear Schrödinger equation (NLSE) is an important model for wave packet dynamics in hydrodynamics, optics, plasma physics and many other physical disciplines. The 'derivative' NLSE family usually arises when further nonlinear effects must be incorporated. The periodic solutions of one such member, the Chen-Lee-Liu equation, are studied. More precisely, the complex envelope is separated into the absolute value and the phase. The absolute value is solved in terms of a polynomial in elliptic functions while the phase is expressed in terms of elliptic integrals of the third kind. The exact periodicity condition will imply that only a countable set of elliptic function moduli is allowed. This feature contrasts sharply with other periodic solutions of envelope equations, where a continuous range of elliptic function moduli is permitted. © 2011 Elsevier B.V. All rights reserved.postprin

Oligomerization of Family B GPCRs: Exploration in Inter-Family Oligomer Formation

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Fire Hazards of Refrigerants in Air Conditioning Control System

Air conditioning control systems are commonly installed in restaurants, commercial buildings, office buildings and institutional buildings in Hong Kong. The systems invariably involve the use of fans for moving the air, filters for cleansing, ducts for air distribution, a control system for regulating the amount of heating or cooling automatically and a refrigerating plant connected to the heat exchange surface. The ducts in turn present the possibility of spreading fire and smoke throughout the building or areas served. According to the local Code of Practice for Minimum Fire Service Installations and Equipment [1], when a ventilation or air conditioning control system to a building is provided, it shall stop mechanically induced air movement within a designated fire compartment. In order to fulfil such requirement, the architects and building services engineers will design to install associated equipment of air conditioning control systems to satisfy the relevant fire safety requirements of the local authority, which includes the provision of fire resisting ducting, fire dampers, smoke detectors and fire resisting cables, etc. However, lessons learned from past experience reveal that owners or property management staff of the buildings or covered areas and maintenance contractors will mainly concern the efficiency and energy saving of the systems without paying much attention to the fire hazards arising from the use of refrigerants. It is also noted that fire or explosion incidents [2] involving air conditioning control systems are often attributed to improper maintenance work conducted by maintenance contractors, such as refilling the refrigerating plant with poor quality refrigerants, recharging refrigerants incompatible with the metal parts of the system, refilling refrigerants at high pressure resulting in bursting of piping and joints, valves contaminated by grease, presence of an ignition source in close proximity of the refrigerating plant, etc. In general, refrigerants present two basic hazards [3], namely toxicity and flammability. Refrigerants mix readily with air and if flammable, may reach flammable concentrations ready to be ignited by an ignition source. As diffusion may not take place rapidly enough to avoid the hazards in the event of leakage, fire or explosion may occur. With reference to a recent fire with explosion incident involving air conditioning control system in a restaurant in Hong Kong, this paper will outline and discuss the fire hazards of refrigerants in air conditioning control systems

Macroeconomics modelling on UK GDP growth by neural computing

This paper presents multilayer neural networks used in UK gross domestic product estimation. These networks are trained by backpropagation and genetic algorithm based methods. Different from backpropagation guided by gradients of the performance, the genetic algorithm directly evaluates the performance of multiple sets of neural networks in parallel and then uses the analysed results to breed new networks that tend to be better suited to the problems in hand. It is shown that this guided evolution leads to globally optimal networks and more accurate results, with less adjustment of the algorithm needed

Receptor oligomerization: from early evidence to current understanding in class B GPCRs

Dimerization or oligomerization of G protein-coupled receptors (GPCRs) are known to modulate receptor functions in terms of ontogeny, ligand-oriented regulation, pharmacological diversity, signal transduction, and internalization. Class B GPCRs are receptors to a family of hormones including secretin, growth hormone-releasing hormone, vasoactive intestinal polypeptide and parathyroid hormone, among others. The functional implications of receptor dimerization have extensively been studied in class A GPCRs, while less is known regarding its function in class B GPCRs. This article reviews receptor oligomerization in terms of the early evidence and current understanding particularly of class B GPCRs.published_or_final_versio

Does The Gender Of The Manager Affect Who He/She Networks With?

Based on a sample of 72 managers from Hong-Kong and1032 associates identified by these managers, the results show that female managers network with other females for expressive support but when seeking instrumental contents, they network with male associates.  We also found that females are less likely to approach female associates they have strong ties with but are more likely to approach similarly ranked colleagues.   They are also unlikely to approach higher ranked female colleagues to network on instrumental contents.  Taken together, these results imply that for female managers seeking instrumental support, they should focus on peer-relationships with other females as well as on male associates with whom they have strong ties with. From a stakeholder’s point view, more attention should be paid to designing and implementing social policies and integrating a gender perspective into all public policies. This calls for setting up an integrated network of structure, mechanism and processes designed to arouse more gender-awareness, increase the number of women in decision-making role, facilitate the formulate of gender-sensitive policies and programs. Long-term strategies should be developed to build up women through personal growth process, promote integration and equality in the workplace

Environmental, operational and financial sustainability of packaging methods in delivery businesses

Thesis (M. Eng. in Logistics)--Massachusetts Institute of Technology, Engineering Systems Division, 2010.Cataloged from PDF version of thesis.Includes bibliographical references (p. 143-148).In retail delivery companies, packaging is used to transport goods to customers while preventing damage, shrinkage and loss of the contents. With consumer preferences reflecting the growing concern for the environment, retail delivery businesses are at the crossroads of implementing a sustainable operational and financial business model of delivering packages to customers. In this thesis, we will address the issue of sustainable packaging in retail delivery companies by evaluating the financial, environmental and operational viability of such strategies. The thesis will be limited to the downstream order fulfillment cycle from the retail delivery company to the customer. We will focus on three areas applicable to sustainable packaging. The first area is materials innovation where we will analyze alternative materials suitable for retail delivery packaging. The second area involves waste elimination through reducing packaging material use and reusing of packaging materials through a returnable tote program. Lastly, we will understand the implementation challenges to increase the success rate of the strategies mentioned earlier.by Joshua Ng and Kendall Chow.M.Eng.in Logistic