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Search Results: 1 - 10 of 151840 matches for " Li Zhou "
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Carbon Emission: Invalid Strategy and Ecological Rule  [PDF]
Li Zhou
Low Carbon Economy (LCE) , 2012, DOI: 10.4236/lce.2012.323011
Abstract: Carbon emission is a problem of global concern because it scares humanity’s living. While CCS (carbon capture and sequestration/storage) strategy received global attention, some scholars argued that the present warming is just a natural step in a long range periodic change of climate. Here we show that it isn’t a natural phenomenon, nor is something con- trollable by the CCS strategy. Carbon emission is governed by an ecological rule of the earth: global carbon emission is linearly correlated to the world population when the latter is larger than 1.3 × 109. Therefore, birth control is an essential component of low carbon economy.
Environmental Pollution: The Essence and Solution  [PDF]
Li Zhou
Low Carbon Economy (LCE) , 2014, DOI: 10.4236/lce.2014.52006
Abstract:

Environmental pollution is the result of human activities, which causes carbon accumulation on the earth. The accumulated carbon resides not only in CO2, but also in urban garbage, aquatic weeds, agricultural refuses and other wastes. The forced carbon circulation (FCC) strategy aims to bringing the accumulated carbon back to the ecological cycle through carbonization and carbon reduction. The former changes all refuses to gaseous fuel (ca. 10 wt%) and inorganic carbon; the latter changes all acid/acidic gases (SO2, NOx, CO2) to inoffensive/useful substances with the inorganic carbon. Application of FCC strategy will effectively alleviate environmental pollution in a simple way. However, the essence of environment pollution is the heavy population that cannot be sustained by the earth. Therefore, no technical measure, but politics can solve the problem thoroughly.

GBDT-SVM Credit Risk Assessment Model and Empirical Analysis of Peer-to-Peer Borrowers under Consideration of Audit Information  [PDF]
Zhou Li
Open Journal of Business and Management (OJBM) , 2018, DOI: 10.4236/ojbm.2018.62026
Abstract:
With the rapid development of P2P (peer-to-peer) online lending industry, how to effectively evaluate the borrowers’ credit risk in the platform has drawn more and more attention. In this paper, we propose a borrower credit risk assessment index system that includes basic information, work information, credit information, asset information, loan information and audit certification information, and come up with a credit risk assessment model that combines Gradient Boosting Decision Trees (GBDT) and support vector machine (SVM). Then, we select the data of P2P lending platform to carry out the empirical analysis of the credit risk assessment, and compare with the common four kinds of single prediction models such as logic regression (LR), artificial neural network (ANN), SVM and clustering algorithm. The results show that the increase of audit certification information helps to improve the forecasting effect of the model, and the credit risk assessment model of P2P lending platform based on GBDT and SVM has higher prediction accuracy and stability.
Diagnose the Earth  [PDF]
Li Zhou
Low Carbon Economy (LCE) , 2018, DOI: 10.4236/lce.2018.93006
Abstract: The earth is sick and the present work explains how it gets ill and how serious the decease is. It is shown that the illness originates in over dense population since present population is 7.6 billion while 1.3 billion is the breakeven point of the earth for CO2 metabolism and 6.7 billion is the upper limit to maintain a quasi-equilibrium state for the metabolism. More and more greenhouse gases emit into atmosphere from underground and undersea, and warming up process is accelerated. Utilization of clean energy cannot save the earth, but to pray a little ice age coming soon. What humanity can and should do is to use zero-emitted coal power and change the fertility rate to negative.
Research on the Allocation of Cash Flow Rights and Control Rights in Venture Capital Financing Contract  [PDF]
Yunfei Li, Zongfang Zhou
Modern Economy (ME) , 2012, DOI: 10.4236/me.2012.31008
Abstract: In view of the allocation of cash flow rights and control rights in venture capital firms, a financing contract model is set up by introducing the entrepreneur’s self-owned capital in this paper. This paper analyzes the affecting factors and mechanism to the allocation of cash flow rights and control rights, shows the relationship between cash flow rights and control rights, gives the bargain intervals of the entrepreneur and the venture capitalist about the allocation of cash flow rights and control rights. It is shown that the more the entrepreneur’s self-owned capital and the higher the venture capitalist’s evaluation of the venture project and the ability of the entrepreneur, the fewer cash flow rights and control rights the venture capitalist will want; the relationship between cash flow rights and control rights of the venture capitalist is complementary but not corresponding, so the result provides a theoretical explanation for Kaplan and Stromberg’s empirical researches about the disproportion between cash flow rights and control rights in venture capital firms.
From Dynamic Linear Evaluation Rule to Dynamic CAPM in a Fractional Brownian Motion Environment  [PDF]
Qing Zhou, Chao Li
Journal of Mathematical Finance (JMF) , 2012, DOI: 10.4236/jmf.2012.24034
Abstract: In this paper, we present the fundamental framework of the evaluation problem under which the evaluation operator satisfying some axioms is linear. Based on the dynamic linear evaluation mechanism of contingent claims, studying this evaluation rule in the market driven by fractional Brownian motions has led to a dynamic capital asset pricing model. It is deduced here mainly with the fractional Girsanov theorem and the Clark-Haussmann-Ocone theorem.
Analyses and Numerical Modeling of Gravity Waves Generated by Flow over Nanling Mountains  [PDF]
Ziliang Li, Jin Zhou
Atmospheric and Climate Sciences (ACS) , 2014, DOI: 10.4236/acs.2014.42032
Abstract: Although there have been many observational and modeling studies of gravity waves excited by topograpghy, the detailed structure and its changes in real world are still poorly understood. The interaction of topography and background flow are described in details for a better understanding of the gravity waves observed by the Moderate Resolution Imaging Spectroradiometer (MODIS) satellite imagery over Nanling Mountains. The evolutionary process and spatial structure of gravity waves were investigated by using almost all available observational data, including MODIS satellite imagery, the Final Analyses (FNL) data issued by National Centers for Environmental Prediction (NCEP), the aerosol backscattering signal data from Lidar, the surface observational data and the sounding data of Nanling mountain regions. In order to study its development mechanism, choosing the initial sounding of Jiangxi Gaizhou station located in the upstream of Nanling regions, and using the Advanced Regional Prediction System (ARPS), the numerical simulation was performed. It is shown that the ARPS model reproduced the main features of gravity waves reasonably well, where the gravity waves and turbulent mixed layer are consistent with the satellite image and the aerosol backscattering signal from Lidar observation. It is well-known that gravity wave-induced turbulence and thus turbulent mixing could affect the local composition of chemical species, which plays a significant role in the formation of low visibility and precipitation associated with local orography.
Anti-Money Laundering Game between Banking Institutions and Employees in the Progressing CNY Internationalization  [PDF]
Dexiang Mei, Li Zhou
Modern Economy (ME) , 2015, DOI: 10.4236/me.2015.64048
Abstract: Based on the establishment of imperfect dynamic game model of multiple node information sets, the paper analyzes the three equilibrium strategies of banking institutions (BIs) and employees (BEs) under Chinese government’s different anti-money laundering (AML) efforts: both free of AML, BIs involved in AML but BEs away from AML, and both engaged in AML. It finds that Chinese government’s AML effort will impact BIs’ AML choice, and BIs’ AML choice will affect BEs’ AML choice. Only with the effective cooperation among the government, BIs, and BEs can we achieve the AML equilibrium strategy of the two gaming parties.
Effect of Carotid Artery Stenting and Extracranial-Intracranial By-Pass on Cognitive Function: Preliminary Results  [PDF]
Li Liu, Yuying Zhou
International Journal of Clinical Medicine (IJCM) , 2015, DOI: 10.4236/ijcm.2015.66049
Abstract:
Background: To compare the neuropsychological consequences after carotid artery stenting (CAS) and extracranial-intracranial by-pass (EC-IC by-pass). Methods: A total of 43 patients referred to CAS, 32 patients referred to EC-IC by-pass and 43 control subjects were enrolled in the study. Neuropsychologic testing was performed before and three months after procedure. A paired Student t test was used to compare neuropsychologic test scores at baseline and three months after procedure in each group. Cognitive changes in a three-month follow-up were not normally distributed and compared among/between groups with Kruskal-Wallis test. Results: Three months after the treatment both the CAS and EC-IC by-pass groups showed improved cognitive performance compared to baseline, whereas the same improvement wasn’t seen in the control group. The scores from Activities of Daily Living also improved in all three groups in a three-month follow-up, and EC-IC group presented a more distinct increase in daily life abilities comparing to the other two groups. Conclusions: CAS and EC-IC by-pass in patients with a carotid or intracranial stenosis may result in cognitive improvement three months after surgery.
The Relationship between Parental Rearing Patterns and Teenagers Teasing  [PDF]
Tianmei Zhou, Li Luo
Psychology (PSYCH) , 2015, DOI: 10.4236/psych.2015.612143
Abstract: This paper examines how and to what extent parental rearing patterns influence the type of teenage teasing and its impact by making use of a Chinese version Egna Minnen Barndoms Uppfostran (EMBU). The participants include 582 adolescents in 7th-, 8th-, 9th-, 10th-, 11th- and 12th- grades from 2 schools in 2 cities in Sichuan province, China. The results show that teasing of physical appearance and social behavior occurs often, and that the impact of social behavior and performance is the greatest. The study finds that teenage teasing varies significantly depending on the subject’s gender, whether it occurs in urban or rural settings, whether the teenagers are left-behind or non-left-behind, as well as the level of paternal educational. Positive parental rearing practices (that involve emotional warmth) are also found to be negatively correlated with teenage teasing and its influence (except academics); while negative parental rearing patterns (rejection, punishment, control and favoring subject) are positively correlated with teenage teasing and its influence, among which paternal rejection and parental control have the greatest influence on teenagers teasing and its influence.
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