University of the Thai Chamber of Commerce

About: University of the Thai Chamber of Commerce is a education organization based out in Bangkok, Thailand. It is known for research contribution in the topics: Corporate social responsibility & General equilibrium theory. The organization has 223 authors who have published 422 publications receiving 5380 citations.

Social conflict, growth and factor shares

Abstract: Standard growth theory is based on atomistic agents with no strategic interactions among them. In contrast, we model growth as resulting from a one-off, strategic game between workers and owners of capital (capitalists) on factor shares, in an otherwise standard AK growth model. The resulting distribution of income between factors further determines the marginal revenue product of capital and the rate of growth. We analyse the properties of four equilibria: competitive, Stackelberg equilibrium, a hybrid non-cooperative regime, and cooperative (Nash) solution. We show that our model provides a potentially richer view of the growth process than comparable models, and endogenises a key aspect of the social contract.

An Empirical Analysis of Sovereign Credit Risk Co-movement between Japan and ASEAN Countries

Abstract: Japan is the most developed economy in Asia. However, it has been on record for being the most heavily indebted country among OECD countries. In many circumstances, the high sovereign debt level indicates a high possibility of sovereign credit risks associated with investment in government bond. The high sovereign credit risk may also generate a number of negative externalities for private businesses operating in the host country. This paper investigates whether sovereign credit risk of Japan as measured by its sovereign credit default swap (SCDS) can better predict and commove with sovereign credit risk of selected ASEAN countries. The bivariate VAR model was used to test for Granger Causalities among these countries SCDS premiums and correlation analysis to investigate co-movements between SCDS of these countries. The results indicate that Japan’s sovereign credit risks do not co-move with those of ASEAN countries, Furthermore, Sovereign credit risks of ASEAN countries tend to lead those of Japan as evidenced by unidirectional causalities from these countries to Japan. The overall suggestion is that sovereign credit risk of Japan is not likely to influence those of ASEAN. The paper concludes with some implications for businesses.

Numerical Study of an AC MHD Generation with Double-side Exciting Winding

Abstract: This paper studies physical phenomena, performance and optimal operating point of an AC MHD generator under the slip value by using a numerical simulation. The double-side exciting winding of the generator is considered. Its structure consists of a channel, an insulator and stators. Channel type is a flat rectangular and the liquid flows along the channel as a conductor. Channel wall acted as an insulator separates metal fluid and stator coils. The top and bottom stator winding of the generator is connected to polyphase system. Under this condition, it can produce a magnetic field by means of time harmonic function in the same direction of the metal fluid. An interaction between traveling wave and metal fluid is explained by finite element method under Maxwell's equation and Ohm law. The distribution of magnetic vector potential and magnetic flux density throughout channel is evidently shown in xy-plane. Power flow in AC MHD generator is evaluated by slip value. The optimal operating point of an AC MHD generator performance is reported by active power 0.99kW, reactive power 50kVAR, mechanical power 1.58kW, power dissipation 0.59kW and electrical efficiency 62.5%.

Preparation and Characteristics of Activated Carbons from Coffee Residue by Chemical Activation Method

Abstract: Coffee residue, a biomass, was used as an important source of precursors for the preparation of activated carbon by a chemical activation method. Activated carbon from coffee residue was prepared in a two-step process: carbonization and chemical activation processes. The influence of the activation condition variables such as activation reagents, activation reagent/precursor ratios, activation temperatures and activation times were investigated to find the optimum conditions. The quality of the derived activated carbon is characterized in terms of its physical properties of adsorption using different analytical methods for liquid and gas phase adsorption. For the gas adsorption test, the surface area and total pore volume of the derived activated carbons were measured by Nitrogen Adsorption Isotherms at 77 K (BET method), using an Autosorp (BEL MINISORP). The liquid adsorption test, the adsorption quality of the derived activated carbon, was evaluated in terms of iodine adsorption capacity (Iodine Number) reflecting the surface area. The optimum condition from experimental results was ZnCl2/Coffee weight ratio of 3:1, an activation temperature of 500 oC and activation time of 2 hrs. The characteristics of the derived activated carbon produced under optimum conditions were an iodine number of 926 mg/g, BET surface area of 1,218.18 m2/g, and total pore volume of 0.86 cm3/g. The nitrogen adsorption isotherm of the derived activated carbon exhibits Type I. Furthermore, the commercial activated carbons used to compare the adsorption quality, the surface area, the pore structure and iodine number with coffee residue activated carbon were reported. Activated carbons obtained from coffee residue showed good qualities for use as an activated carbon because iodine numbers are higher than 600 mg/g and the moisture content (%) is less than 8%, values considered by the Thai Industrial Standards Institute, TISI.900-2004.

Cherry-picking of code commits in long-running, multi-release software

Abstract: This paper presents Tartarian, a tool that supports maintenance of software with long-running, multi-release branches in distributed version control systems. When new maintenance code, such as bug fixes and code improvement, is committed into a branch, it is likely that such code can be applied or reused with some other branches. To do so, a developer may manually identify a commit and cherry pick it. Tartarian can support this activity by providing commit hashtags, which the developer uses as metadata to specify their intentions when committing the code. With these tags, Tartarian uses dependency graph, that represents the dependency constraints of the branches, and Branch Identifier, which matches the commit hashtags with the dependency graph, to identify the applicable branches for the commits. Using Tartarian, developers may be able to maintain software with multiple releases more efficiently. A video demo of Tartarian is available at www.github.com/tartarian.