Relativity of Economic Fundamentals and Fluctuation of Thai Currency: Spectra Analysis of Thai Baht REER (Real Effective Exchange Rate)

This paper examines the major wave functions that influence the real effective exchange rate of Thai baht. In this paper, Fourier transform technique is used to extract the hidden sinusoidal wave function in the main graph. Consequently, the wave function will lead to development of a better mathematical model which can be used to predict the future value of exchange rate. An exchange rate prediction is one of the most important tools to develop better strategic decisions. In accordance with the results gained, we canshow the relativity of economic fundamentals and currency fluctuation, which implies that the basis unit of economic fundamentals exists and its characteristic of time-value (pricequantity) function is shown in sinusoidal waveform

Implementation Steps to Optimize Search Engine Marketing (SEM) Results for Small and Medium Sized E-Commerce Companies

In terms of Internet marketing, search engines are the channel of choice for most of the internet advertisers in nowadays online-market. Considering its growth as an online advertising media, online marketers exploit this media using Search Engine Marketing (SEM) together with its strategies and implementation steps. This paper suggests some implementation steps for SEM to facilitate startups websites to be visible and competitive throughout this media. Delicate search engine mechanisms regarding indexing and web crawling develop Search Engine Marketing into the implementation steps including short-term and long-term marketing strategies. Search engine mechanisms schemes with the aid of author’s experience in organizing SEM contribute to the steps implication and conceptualization. In the light of implementation steps, marketers are competent to constantly advance their websites with the direction

The gas sensing properties of some complex metal oxides prepared by self-propagating high-temperature synthesis

The gas-sensing properties of spinel and orthorhombic ferrites (NiFe2O4, CoFe2O4 and LaFeO3 respectively) as well as cubic nickel–zinc stannates Zn2 − xNixSnO4 (with x = 0, 0.8) prepared by self-propagating high-temperature synthesis (SHS) are reported. This is the first report of using an SHS derived powder for gas sensing applications. The gas response of the materials was investigated against a range of gases (ethanol, ammonia, propane, CO, ethane, ethene) at a variety of operating temperatures. Good gas response behavior was found in the case of the cubic nickel–zinc stannates with excellent selectivity toward ethanol

Interactions of Kr(F₂), O₂, and (O₂)₂ with Si(100)

Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemistry, February, 2021Cataloged from the official PDF of thesis. "February 2021."Includes bibliographical references.The high reactivity of XeF₂ with fluorinated Si is proposed to arise from localized vibrational excitation of the Si lattice as a result of the multiple collisions required to reverse the momentum of the heavier XeF₂ incident on the lighter Si lattice. This study is part of a series of experimental studies to test the hypothesis that the mass of the incident molecule is responsible for the collision induced vibrational excitation that leads to enhanced reactivity by varying the mass of the inert gas X in a X(F₂) van der Waals (vdW) molecule. The reaction probability of Kr(F₂) towards fluorinated Si(100) is measured to be 0.2±0.1, which is around two orders of magnitude higher than that of the lighter F₂ and almost one order of magnitude lower than that of the heavier XeF₂/Xe(F₂), thereby supporting the viability of the proposed mechanism. Dissociative adsorption of triplet O₂ on the singlet Si(100) surface is spin-forbidden.A possible unexplored reason for the low but non-zero reaction probability of triplet O₂ on Si(100) is an atom abstraction reaction mechanism that circumvents the spin transition since a complementary triplet O atom is released. Mass spectrometry experiments do not detect the complementary O atoms for O₂ with incident translational energy of 1-2 kcal/mol scattering from Si(100) at O coverages between zero to 1 ML at 150-1100 K, suggesting the absence of atom abstraction. Abstraction maybe undetectable due to insufficient partitioning of reaction exothermicity into translational energy of the complementary O atom. Singlet (O₂)₂ vdW dimer is more reactive than triplet O₂ at incident translational energies of about 1 kcal/mol with Si(100) at temperatures of 250-500 K. Four-center and step-wise are singlet mechanisms proposed to be responsible for increased (O₂)₂ reactivity.The probability of (O₂)₂ undergoing either or both singlet mechanisms is measured to be at least 2±1 and at most 8±4 times higher than the triplet O₂ reaction probability. This result indicates that the slow oxidation of Si(100) by triplet O₂ due to the necessary spin transition can be circumvented via oxidation by singlet (O₂)₂.by Thanasak Sathitwitayakul.Ph. D.Ph.D. Massachusetts Institute of Technology, Department of Chemistr