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Search Results: 1 - 10 of 6534 matches for " Chih-Chiang Hsu "
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Consumer Confidence and Stock Markets: The Panel Causality Evidence
Chih-Chiang Hsu,Hung-Yu Lin,Jyun-Yi Wu
International Journal of Economics and Finance , 2011, DOI: 10.5539/ijef.v3n6p91
Abstract: This paper uses a panel of country-level data to investigate the causal relationship between the consumer confidence index (CCI) and the stock market index (SMI). We apply the common correlated effects mean group (CCEMG) estimation of Pesaran (2006) to capture the cross-sectional dependence of our variables before examining this causal relationship. In the panel data analysis, we discover the two-way causality between the CCI and SMI. One of the ways is where stock returns Granger-cause the changes in the CCI. According to the information view of the CCI, this result is due to consumers regarding the stock returns as being the leading indicators of the future situation, regardless of whether they own the stocks or not. On the other hand, the changes in the CCI also Granger-cause the stock returns, the reason for this being attributable to the animal spirits view of consumers. When consumers believe in their own opinions, they will at the same time have strong confidence in and an optimistic attitude toward the future economic situation. Based on these conditions, consumers will invest more in the stock market.
Monostable-Type Travelling Wave Solutions of the Diffusive FitzHugh-Nagumo-Type System in
Chih-Chiang Huang
Abstract and Applied Analysis , 2012, DOI: 10.1155/2012/735675
Abstract: This paper is concerned with monostable-type travelling wave solutions of the diffusive FitzHugh-Nagumo-type system (FHN) in for the two components and . By solving in terms of , this system can be reduced to a nonlocal single equation for . When the diffusion coefficients in the system are equal, we construct travelling wave solutions for the non-local equation by the method of super- and subsolutions developed by Morita and Ninomiya (2008) Moreover, we propose a condition for , which is similar to the condition Reinecke and Sweers (1999) used to transform (FHN) into a quasimonotone system.
An Application of Fuzzy Set Theory to the Weighted Average Cost of Capital and Capital Structure Decision  [PDF]
Shin-Yun Wang, Chih-Chiang Hwang
Technology and Investment (TI) , 2010, DOI: 10.4236/ti.2010.14032
Abstract: The purpose of this paper is to present the use of fuzzy logic to improve the calculation of weighted average cost of capital (WACC). The fuzzy WACC approach not only allows the pre-tax cost of debt, the effective tax rate, the tax benefit, and cost of equity to be treated as fuzzy numbers, it also offers ranking means to find the optimal debt ratio. This paper contributes to the literature by offering alternative methods to calculate the WACC and the optimal debt ratio for firms under uncertainty. Compared with the traditional WACC, the fuzzy WACC model can overcome the problems pertinent to uncertainty, complexity and imprecision. This paper thus sheds light on capital structure decision making.
THE ABERRATIONS OF CYLINDRICAL OPTICAL SYSTEMS
同轴柱面光学系统的象差

WANG CHIH-CHIANG,
王之江

物理学报 , 1960,
Abstract: 本文首先由柱面系统中描写光线所须的参数和对称性,确定了同轴柱面系统的独立象差数是八个,而对无限远物体而言则只有六个。而后由矢量代数方法证明空间光线在柱面系统中的折射光路与发生折射率改变后的子午截面内光路全同,由此得出柱面系统有别于球面系统的二种象差与色差相当。从而导出了校正柱面象差的条件并对柱面望远镜象差作了估值。结果表明,校正柱象差一般而言是很困难的,另一方面虽不加以校正影响也不算严重。最后讨论了柱面望远镜的高斯光学,结果表明,望远镜使一方向余弦按定比例缩小,而另一方向余弦不变时,它所成出的直线的象是弯曲的。
THEORY OF HIGH ORDER ABERRATIONS
高级象差理论

WANG CHIH-CHIANG,
王之江

物理学报 , 1960,
Abstract: This paper is to discuss the properties of high order aberrations taking advantage of as much as possible of using the methods of approximation. The number of independent terms of secondary aberrations is first accessed and its geometrical significance ascertained. By a coordinate transformation the effects of the change of stop position on aberration coefficients are determined. The relations between the position of the object and its aberration coefficients are found on the basis of Fermat principle, by regarding each ray as emitting from different object points lying along this ray.The high order aberrations can be regarded as coming from two sources. The first is of "intrinsic" origin caused by the refracting surface proper, the incident beam being regarded free from abberations. All aberrations of this origin can be represented in terms of high order spherical aberration and off-axis spherical aberration introduced by the respective surface. The other is of sequential character, introduced on account of the presence of primary aberration of the incident beam introduced by the preceeding refracting surfaces.The derivations so arrived may not accord exactly with theory but they are close enough for practical purposes so as to access the origin of various aberrations as well as to give a quantitative estimation of them.The application of Fermat principle to the question of high order chromatic aberration with advantage takes into account of the fact that the method is true only because all other aberrations are already nearly corrected in a given optical system.
THE RUBY OPTICAL MASER
红宝石光量子放大器

WANG CHIH-CHIANG,
王之江

物理学报 , 1964,
Abstract: In this article the properties of resonance cavity, operating condition, and radiation output of optical pumping laser are discussed. Factors affecting the operation and the resultant emission are analysed in detail. Evaluation standard for resonance cavity and active media are described. Cavity constructions for limiting the resonance to one or several modes are suggested, hence, photon degeneracy or brightness of light flux in unit frequency range may be increased by several orders of magnitude. Experimental results on the Ruby laser obtained in our laboratory are given. The interpretations of angular distrubution of light frequency, proposed by the auther, can be used to account for some experimental results published by recent investigertors.
LOW CONTRAST RESOLVING POWER AND ABERRATION TOLERANCE OF OPTICAL SYSTEMS
光学系统的低对比分辨本领和象差的公差

WANG CHIH-CHIANG,
王之江

物理学报 , 1963,
Abstract: 具有大象差的光学系统象差公差问题一直还未得到很好解决。本文中提出以低对比分辨本领作为光学系统的质量指标,并将光学系统的传递函数近似表示为正交多项式之和,象差任意大小的光学系统的最佳校正方案和公差之值就可以求出。在小象差情况下,所得的结果与Strehl判断的结果基本一致。
COHERENCE PROPERTIES OF ELECTROMAGNETIC RADIATION
电磁辐射的相干性

WANG CHIH-CHIANG,
王之江

物理学报 , 1963,
Abstract: In this paper, recent advances in the research of coherence properties of electromagnetic radiation are discussed. Using the conception of photon degeneracy and degree of coherence the author is able to explain many problems such as light mixing, intensity fluctuations and the properties of coherent light source. Since the occurrence of radiation process is at random, the intensity of the signal generated by the mixing of different sources can be determined by the correlation of radiation processes as derived in the present paper. Regarding photons as bosons, the phenomena "intensity interferense" is explained as quantum fluctuations. The coherence properties of radiation may thus be interpreted well on the basic conception of quantum machanics.
Comparative Proteomic Analysis of Proteins Involved in the Tumorigenic Process of Seminal Vesicle Carcinoma in Transgenic Mice
Wei-Chao Chang,Chuan-Kai Chou,Chih-Chiang Tsou,Sheng-Hsiang Li,Chein-Hung Chen,Yu-Xing Zhuo,Wen-Lian Hsu,Chung-Hsuan Chen
International Journal of Proteomics , 2010, DOI: 10.1155/2010/726968
Abstract: We studied the seminal vesicle secretion (SVS) of transgenic mice by using one-dimensional gel electrophoresis combined with LTQ-FT ICR MS analysis to explore protein expression profiles. Using unique peptide numbers as a cut-off criterion, 79 proteins were identified with high confidence in the SVS proteome. Label-free quantitative analysis was performed by using the IDEAL_Q software program. Furthermore, western blot assays were performed to validate the expression of seminal vesicle proteins. Sulfhydryl oxidase 1, glia-derived nexin, SVS1, SVS3, and SVS6 showed overexpression in SVS during cancer development. With high sequence similarity to human semenogelin, SVS2 is the most abundance protein in SVS and is dramatically decreased during the tumorigenic process. Our results indicate that these protein candidates could serve as potential targets for monitoring seminal vesicle carcinoma. Moreover, this information can provide clues for investigating seminal vesicle secretion-containing seminal plasma for related human diseases. 1. Introduction Primary seminal vesicle carcinoma is an extremely rare neoplasm; only a few cases have been reported [1, 2]. Seminal vesicle carcinoma is usually associated with diffuse carcinomas of the bladder, prostate, or upper tracts. Very few studies have been published on seminal vesicle invasion [3], and the tumor biology of seminal vesicle carcinoma is not well understood. The diagnoses of seminal vesicle carcinoma are generally based on a combination of morphologic, immunohistochemical, and radiological examinations. However, it is difficult to make a definitive diagnosis using limited biopsy material. The seminal vesicle makes up part of the male accessory sexual glands. After puberty, the glands produce a fluid called seminal vesicle secretion (SVS), which accumulates in the lumen of the seminal vesicles. SVS contains both protein and nonprotein components and composes the majority of seminal plasma. The extirpation of seminal vesicles from adult rodents greatly reduces fertility, indicating that SVS plays an important role in sperm activity and modification [4]. Some SVS proteins have been analyzed to characterize their functions and physiological activities [5–9], but the constituents of the SVS proteome have not been well studied. Proteomic studies are broadly applied to the diagnostic, prognostic, and therapeutic fields. In terms of disease diagnosis and prognosis, body fluid analysis proves to be more attractive than tissue analysis because it provides several advantages including low invasiveness, minimum cost,
A New Iterated Local Search Algorithm for Solving Broadcast Scheduling Problems in Packet Radio Networks
Chih-Chiang Lin,Pi-Chung Wang
EURASIP Journal on Wireless Communications and Networking , 2010, DOI: 10.1155/2010/578370
Abstract: The broadcast scheduling problem (BSP) in packet radio networks is a well-known NP-complete combinatorial optimization problem. The broadcast scheduling avoids packet collisions by allowing only one node transmission in each collision domain of a time division multiple access (TDMA) network. It also improves the transmission utilization by assigning one transmission time slot to one or more nodes; thus, each node transmits at least once in each time frame. An optimum transmission schedule could minimize the length of a time frame while minimizing the number of idle nodes. In this paper, we propose a new iterated local search (ILS) algorithm that consists of two special perturbation and local search operators to solve the BSPs. Computational experiments are applied to benchmark data sets and randomly generated problem instances. The experimental results show that our ILS approach is effective in solving the problems with only a few runtimes, even for very large networks with 2,500 nodes.
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