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A High Efficiency Spread Spectrum Scheme Using Approximate Orthogonal Complex Sequences  [PDF]
Xiaohong SHI
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2010, DOI: 10.4236/ijcns.2010.31011
Abstract: This paper presents a high efficiency spread spectrum scheme using approximate orthogonal complex (AOC) sequences. In this scheme, the 64 AOC sequences picked up from 84 complex sequences space are employed for spreading spectrum. In modulation, 6 input bits is used to select one AOC sequence, and the selected sequence is then phase-rotated by another 2 input bits. In demodulator, a complex correlator detects the transmitted AOC sequence. Simulation results show that the proposed scheme has better BER performance than the existing complementary code keying (CCK) modulation scheme. For AOC, additional processing gain of 1.79dB can be obtained when the sequence length is 8.
Foundations of Intelligence Science  [PDF]
Zhongzhi Shi
International Journal of Intelligence Science (IJIS) , 2011, DOI: 10.4236/ijis.2011.11002
Abstract: In order to make significant progress toward achievement of human level machine intelligence a paradigm shift is needed. More specifically, the natural intelligence and artificial intelligence should be closely interacted in Intelligence Science study, instead of separate from each other. In order to reach the paradigm, brain science, cognitive science, artificial intelligence and others should cross-research together. Brain science explores the essence of brain, research on the principle and model of natural intelligence in molecular, cell and behavior level. Cognitive science studies human mental activity, such as perception, learning, memory, thinking, consciousness etc. Artificial intelligence attempts simulation, extension and expansion of human intelligence using artificial methodology and technology. All together pursue to explore the mechanism and principle of intelligence which is the engine of advanced science and technology. The paper will give the definition of intelligence and discuss ten big issues of Intelligence Science. The conclusion and perspective will be given in last section.
Numerical Study of Initial Soil Moisture Impacts on Regional Surface Climate  [PDF]
Xueli Shi
Atmospheric and Climate Sciences (ACS) , 2011, DOI: 10.4236/acs.2011.14019
Abstract: In this paper, the impacts of initial soil moisture (SM) over the Huaihe River Basin of China on the summertime climate have been investigated with a regional climate model. Three fourth-month-long simulations are made for two summers, the abnormal flooding in 2003 and normal climate in 2004. Besides control simulations (noted as CTL), sensitivity experiments have been conducted by assigning the initial soil moisture equals to 50% and 150% of the simulated soil moisture while keeping the others unchanged, which are noted as SM50 and SM150, respectively.The results show that effects of initial SM anomalies at late spring can last for the whole summer, and the increase of initial soil moisture (SM150) has more significant effects than the decreased one (SM50). The differences between sensitivity experiments and CTL mainly appear at surface and near-surface atmosphere. When increasing the initial SM, the latent heat flux and surface soil moisture are increased, correspondingly the sensible heat flux, temperature and radiation are all decreased. The changes of rainfall are not distinct between SM50 and SM150, which might be related to the processes within atmosphere, especially the humidity pattern.
Cost Optimal Selection of Storage Tanks in LPG Vaporization Station  [PDF]
Guohua Shi
Natural Resources (NR) , 2012, DOI: 10.4236/nr.2012.33021
Abstract: Liquefied petroleum gas (LPG) is an important urban gas source in China. Before supplied to customers by pipeline supply systems, LPG is stored in tanks in LPG vaporization stations. Designers usually decide the number and the size of storage tanks by their experience during constructions of vaporization stations. These decisions are usually not best and most economical. To solve the problem, a compact mixed integer nonlinear programming model has been developed in this paper. The objective is to minimize annual storage cost of the vaporization station. The model has been transformed into a general nonlinear programming model by transforming integer variables and 0-1 variables into continuous variables. One LPG vaporization station was taken as an example to illustrate the usage of the model. The results show that the optimal storage scheme can be determined accurately and quickly by the model and about 15% of storage cost can be saved every year after optimization.
A Cyclic Cosmological Model Based on the f(ρ) Modified Theory of Gravity  [PDF]
Yaoming Shi
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.48A004
Abstract:

We consider FLRW cosmological models for perfect fluid (with ρ as the energy density) in the frame work of the f(ρ) modified theory of gravity [V. N. Tunyak, Russ. Phys. J. 21, 1221 (1978); J. R. Ray, L. L. Smalley, Phys. Rev. D. 26, 2615 (1982)]. This theory, with total Lagrangian R-f(ρ), can be considered as a cousin of the F(R) theory of gravity with total Lagrangian F(R)-ρ. We can pick proper function forms f(ρ) to achieve, as the F(R) theory does, the following 4 specific goals, 1) producing a non-singular cosmological model (Ricci scalar and

Letter to the Editor  [PDF]
Lin Shi
Advances in Alzheimer's Disease (AAD) , 2013, DOI: 10.4236/aad.2013.23010
Abstract: Letter; Alzheimer’s Disease
Relationship between Maximum Principle and Dynamic Programming in Stochastic Differential Games and Applications  [PDF]
Jingtao Shi
American Journal of Operations Research (AJOR) , 2013, DOI: 10.4236/ajor.2013.36043
Abstract:

This paper is concerned with the relationship between maximum principle and dynamic programming in zero-sum stochastic differential games. Under the assumption that the value function is enough smooth, relations among the adjoint processes, the generalized Hamiltonian function and the value function are given. A portfolio optimization problem under model uncertainty in the financial market is discussed to show the applications of our result.

Uniqueness of Meromorphic Functions of Differential Polynomials Sharing Two Values IM  [PDF]
Xinhua Shi
Advances in Pure Mathematics (APM) , 2014, DOI: 10.4236/apm.2014.42005
Abstract:

In this paper, we shall study the uniqueness problems of meromorphic functions of differential polynomials sharing two values IM. Our results improve or generalize many previous results on value sharing of meromorphic functions.

The Challenge of Managing Government-Industry Relationships  [PDF]
Shi Li
Journal of Financial Risk Management (JFRM) , 2013, DOI: 10.4236/jfrm.2013.24014
Abstract: Suntech, once the star of China’s PV industry, now is a highly distressed company under bankruptcy protection towards restructure of business activities. From Suntech’s founding to its uncertain future prospects, the paper discussed the company’s growth story as a good case study to discuss the opportunities and risks resulting from China’s approach to industrial development, which is motivated by booming local economic growth. In the article, we first stated the evolution of Suntech and analyzed the risk factors which lead to the bankruptcy of Suntech under Kaplan’s new risk management and risk categorization framework. A conclusion that the broader strategy of booming economy should be oriented in the healthy enterprise-growth based approach is introduced at the end of the paper.
The Syntax-Semantics-Prosody Interface in Legislative Language  [PDF]
Hongli Shi
Beijing Law Review (BLR) , 2014, DOI: 10.4236/blr.2014.53021
Abstract: Though Chinese and English legislative language share similarities in certain aspects, they contrast most sharply in their syntactic structures and representations, owing to a number of social, cultural and typological factors. Traditional works have directed most of their attention to the lexicon, i.e. the collection of technical terms which are indispensable to the working of law, and the analysis of idiosyncrasies of those terms. Not much effort, if any, has been at present devoted to the study of the syntactic properties of legislative language and the way syntactic computation interfaces with semantic layer, which, the author believes, play a more determinate role in the constructing and interpreting of legislative clauses. This paper first attempts to examine the syntax-semantics interface in Chinese and English legal clauses from the levels of recursion, locality of reference and the general principle of economy respectively, and then tries to study how the position and stress of a word affect the syntax-prosody interface and the information flow. In the end, it concludes that syntax is responsible for base meaning and while prosody highlights a part or parts of that meaning.
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