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Search Results: 1 - 10 of 167184 matches for " Yu Wang "
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Localization of International Hotel Brands in China  [PDF]
Yu Wang
American Journal of Industrial and Business Management (AJIBM) , 2016, DOI: 10.4236/ajibm.2016.69091
Abstract: The hotel industry in China is in a stage of rapid development, and the development prospects of international hotel brands in Chinese market undoubtedly become the focus topic. The localization of international hotel brands is the inevitable trend of the development of international hotel. This paper expounds the reasons of international hotel brands localization and analyzes the localization strategies in China, mainly such as, talent localization, service localization, brand localization, and management localization.
The Impact of Bank Income Diversification on Capital Buffer Periodicity  [PDF]
Yu Wang
Open Journal of Business and Management (OJBM) , 2017, DOI: 10.4236/ojbm.2017.52033
Abstract: Based on the panel data of 16 listed banks in China from 2004 to 2014, this paper makes empirical analysis to examine the relationship between bank’s capital buffer and macroeconomic fluctuations or income diversification. The results show that the banks’ income diversification has negatively correlation with macroeconomic fluctuations. It means the banks’ capital buffer behaves in a counter-cyclical way, and different bank ownership structure or capital level also has asymmetric influence in expansion and slack time. What’s more, the non-interest income of bank has a significant negative impact on capital buffer and its periodicity. The diversification of bank income structure not only reduces the bank’s capital buffer level, but also weakens the counter-cyclical characteristics of capital buffer. At the same time, the diversification of the income structure of the bank with high capital adequacy ratio has no obvious effect on the counter-cyclical characteristics of the capital buffer. Based on the above conclusions, this paper believes that the regulatory authorities in the implementation of the counter-cyclical capital regulation should fully consider the impact of bank income structure and bank capital levels.
Approximate Analysis of Power Offset over Spatially Correlated MIMO Channels  [PDF]
Guangwei YU, Xuzhen WANG
Communications and Network (CN) , 2009, DOI: 10.4236/cn.2009.11004
Abstract: Power offset is zero-order term in the capacity versus signal-to-noise ratio curve. In this paper, approximate analysis of power offset is presented to describe MIMO system with uniform linear antenna arrays of fixed length. It is assumed that the number of receive antenna is larger than that of transmit antenna. Spatially Correlated MIMO Channel is approximated by tri-diagonal toeplitz matrix. The determinant of tri-diagonal toeplitz matrix, which is fitted by elementary curve, is one of the key factors related to power offset. Based on the curve fitting, the determinant of tri-diagonal toeplitz matrix is mathematically tractable. Consequently, the expression of local extreme points can be derived to optimize power offset. The simulation results show that approximation above is accurate in local extreme points of power offset. The proposed expression of local extreme points is helpful to approach optimal power offset.
Optimality for Multi-Objective Programming Involving Arcwise Connected d-Type-I Functions  [PDF]
Guolin Yu, Min Wang
American Journal of Operations Research (AJOR) , 2011, DOI: 10.4236/ajor.2011.14028
Abstract: This paper deals with the optimality conditions and dual theory of multi-objective programming problems involving generalized convexity. New classes of generalized type-I functions are introduced for arcwise connected functions, and examples are given to show the existence of these functions. By utilizing the new concepts, several sufficient optimality conditions and Mond-Weir type duality results are proposed for non-differentiable multi-objective programming problem.
Energy Band Analysis of MQW Structure Based on Kronig-Penny Model  [PDF]
Yu Zhang, Yi Wang
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.47130

The effects of different potential well depths, well widths and barrier widths on energy band of multiple quantum well (MQW) structures are discussed in detail based on Kronig-Penny model. The results show that if the well and barrier width stay unchanged, the first and second band gaps increase linearly with the well depth. When the well depth is constant, the first and second band gaps increase exponentially with the barrier width in a wide well. However, in narrow well one, the second band gap saturates when the barrier width is wide enough. On condition that the well and barrier have equal width, the first band gap decreases exponentially with well-barrier width while the second gap still shows an exponential increase with the width. These results are insightful for the design of MQW structure optoelectronic devices.

Synthesis of High-Stability Acidic β/Al-MCM-41 and the Catalytic Performance for the Esterification of Oleic Acid  [PDF]
Zhiping Wang, Shitao Yu
Advances in Chemical Engineering and Science (ACES) , 2016, DOI: 10.4236/aces.2016.64031
Abstract: β/Al-MCM-41 molecular sieve was synthesized and used to catalyze the esterification of oleic acid with short chain alcohols such as methanol, ethanol, isopropanol and isobutanol to obtain biodiesel. The results indicated that β/Al-MCM-41 exhibited the excellent catalytic activity and stability, which was obviously superior to traditional Al-MCM-41. The relationship between acidity and catalytic activity was in detail examined by NH3-TPD and Py-FTIR. Moreover, the kinetics of esterification of oleic acid with methanol showed that the average reaction order n was 1.97 and that activation energy was 50.01 kJ/mol.
The Impact of Information Disclosure Quality on the Cost of Equity Financing—Based on Time Series Perspective  [PDF]
Gu Yu, Boyu Wang
Journal of Financial Risk Management (JFRM) , 2016, DOI: 10.4236/jfrm.2016.53012
Listed company information disclosure quality attracts more and more attention to capital subject. Great changes have occurred in the ways and content of information disclosure, and the mainstream has recognized by point of view that the increase of information disclosure quality will reduce the cost of equity financing. Under the background of the different periods of the accounting system, changes in the quality of information disclosure of listed companies will affect the cost of the company’s equity in varying degrees from the perspective of time series of listed company information disclosure quality and the cost of equity financing.
The Lonelier, the More Conservative? A Research about Loneliness and Risky Decision-Making  [PDF]
Yu Zhu, Chen Wang
Psychology (PSYCH) , 2017, DOI: 10.4236/psych.2017.810104
Abstract: Mountings of studies discussed about a variety of antecedent factors of risky decision making, however, loneliness, as a vital psychological state featured by affection, cognition as well as behavior, was seldom connected to risky decision-making. The current study aims to figure out whether loneliness would influence decision making under risks and the possible underlying mechanism. Two hundred and fifty participants attended our studies and completed gambling games via either pen-paper or E-Prime software. The results indicate that higher level of loneliness predicts less perceived self-control, which in turn leads to a tendency to avoid risks. However, this effect is only significant in gain scenarios rather than loss scenarios, suggesting there might exist an interaction between loneliness and condition factor. Our findings contribute to previous research by verifying that the preventive focused mind-set of loners can go beyond social events and influences decision making behaviors.
Antihypertensive Properties on Spontaneously Hypertensive Rats of Peptide Hydrolysates from Silkworm Pupae Protein  [PDF]
Wei Wang, Nan Wang, Yu Zhang
Food and Nutrition Sciences (FNS) , 2014, DOI: 10.4236/fns.2014.513131

Peptide hydrolysates of silkworm pupae protein with molecular weight of less than 5000 Da were prepared by ultrafiltration. The extracted peptide hydrolysates of silkworm pupae protein had inhibitory action on angiotensin-I-converting enzyme activity in vitro. The hydrolysates were orally administered to spontaneously hypertensive rats (SHR) in one period and long-term (four weeks). The results showed that the systolic blood pressure (SBP) of the treatment groups decreased in a dose-related manner. After one oral administration of silkworm protein hydrolysates with doses of 60, 20 and 5 mg/kg, the SBP of SHR decreased by 21.5, 13.8, and 9.0 mmHg in 1.5 h. After four weeks of the treatment in 80 mg/kg, the SBP decreased by 25 mmHg, with the antihypertensive activity close to 4 mg/kg of captopril; the SBP of the 40 mg/kg dose group also decreased by 17.5 mmHg. The peptide hydrolysate did not affect the SBP in normal, non-hypertensive rats in one period and long-term treatments. The acute toxicity research showed that the peptide hydrolysates were safe and without side effects. This research would be helpful in exploring the silkworm protein peptides as functional components for the antihypertension treatment.

Yu Wang
Tourismos : an International Multidisciplinary Journal of Tourism , 2006,
Abstract: Training and development is increasingly important to the international hotel industry, especially in China. This paper examines some Chinese four- and five-star hotels’ training and development (T&D) practices from a Western human resource development (HRD) perspective and compares the results between the Chinese state ownership and Sino-foreign joint ventures using multiple case studies. Results seem to show that the western way of training and development may not necessarily lead to superior training effects in the Chinese context than those used by state-owned hotels. It suggests that a better T&D model for Chinese hotels may emerge by learning the lessons from both kinds of hotels’ good practices.
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