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Search Results: 1 - 10 of 28903 matches for " Lina Yi "
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The New Infinite Sequence Complexion Solutions of a Kind of Nonlinear Evolutionary Equations  [PDF]
Lina Yi, Jundong Bao,   Taogetusang
Journal of Applied Mathematics and Physics (JAMP) , 2015, DOI: 10.4236/jamp.2015.312187
Abstract: The method combining the function transformation with the auxiliary equation is presented and the new infinite sequence complexion solutions of a class of nonlinear evolutionary equations are constructed. Step one, according to two function transformations, a class of nonlinear evolutionary equations is changed into two kinds of ordinary differential equations. Step two, using the first integral of the ordinary differential equations, two first order nonlinear ordinary differential equations are obtained. Step three, using function transformation, two first order nonlinear ordinary differential equations are changed to the ordinary differential equation that could be integrated. Step four, the new solutions, B?cklund transformation and the nonlinear superposition formula of solutions of the ordinary differential equation that could be integrated are applied to construct the new infinite sequence complexion solutions of a class of nonlinear evolutionary equations. These solutions are consisting of two-soliton solutions, two-period solutions and solutions composed of soliton solutions and period solutions.
Key Management and Authentication in Ad Hoc Network based on Mobile Agent
Yi Zhang,Lina Zhu,Li Feng
Journal of Networks , 2009, DOI: 10.4304/jnw.4.6.487-494
Abstract: Key management and authentication is important to security of Mobile Ad Hoc network (MANET). Based on the (t, n) threshold cryptography, this paper introduced mobile agents to exchange private key and network topological information with nodes in the network. This method avoids a centralized certification authority to distribute the public keys and the certificates, thus enhances security. Carrying private key and some state variables, mobile agents navigate in the network according to visitsbalance policy, namely, node with the least visits would be first visited by mobile agent. Any t nodes in the network can cooperate to perform an authentication upon a new node wanting to join the network. Experimental results show that the mobile agent performs very well for improving the success ratio of authentication and enhance security while reducing the communication overhead and resource consumption.
Long-Term Continuous Light Exposure Affects Body Weight and Blood Glucose Associated with Inflammation in Female Rats  [PDF]
Xuezhi Kang, Lina Jia, Xu Zhang, Yaming Li, Yi Chen, Xueyong Shen, Yaochi Wu
Journal of Biosciences and Medicines (JBM) , 2016, DOI: 10.4236/jbm.2016.49002
Abstract: Studies have indicated that night lights interfere with the circadian rhythm in the human body and threaten human health. Our previous studies indicated that continuous light exposure severely damages the reproductive endocrine system of female rats resembles polycystic ovary syndrome in women. In this study, we used the continuous measurement method to observe changes in the basal physiological indicators of female rats in an abnormal light exposure environment. Our study results indicated that in female rats: 1) the body temperature first continuously and gradually increased followed by a gradually decrease; 2) the increase in body weight slowed down at the late stage of the experimental process; 3) the random blood glucose level increased, and the fasting serum insulin level decreased; and 4) the serum C-reactive protein level increased. Our study investigated for the first time the correlation between the duration of continuous light exposure in female rats and the continuously measured basal physiological indicators and preliminarily discussed the effect of continuous light exposure on female basal metabolism and the possible inflammation mechanism. We propose that long-term continuous exposure to night lights in females severely damages their immune and metabolic systems.
Overview of Digital Mine
Xuedong Du,Lina Yi,Xinming Lu,Jiangtao Ji
Information Technology Journal , 2010,
Abstract: At the background of developing digital mine rapidly, this study discusses the main contents of digital mine and gives brief descriptions of the components of digital mine. It also introduces the development of 3D technology in detail, describes the present developments and the existing problems of digital mine and shows the direction for creating a safe, high-yield and high-efficiency digital mine.
Determination of the Banned Phthalates in PVC Plastic of Toys by the Soxhlet Extraction-Gas Chromatography/Mass Spectrometry Method
Lina Huang,Zhongyong Liu,Lezhou Yi,Chonghua Liu
International Journal of Chemistry , 2011, DOI: 10.5539/ijc.v3n2p169
Abstract: A Gas Chromatography/ Mass Spectrometry method for the determination of six phthalates which are banned by European Union Regulation and USA CPSIA, in polyvinyl chloride (PVC) toys is studied in this article. The samples were extracted in six hours by Soxhlet extractor when using dichloromethane as the extracting agent, researched by orthogonal experiment. Using TIC (total ion chromatogram) and SIM (select ion monitor) of GC-MS to achieve phthalate’s qualitative and quantitative determination, of which detection limit, accuracy and operating procedure are better than the standards in EN 14372:2004 clause 6.3.2 and ASTM D7083-04.
In Vivo and In Vitro Antinociceptive Effect of Fagopyrum cymosum (Trev.) Meisn Extracts: A Possible Action by Recovering Intestinal Barrier Dysfunction
Lina Liu,Xueting Cai,Jing Yan,Yi Luo
Evidence-Based Complementary and Alternative Medicine , 2012, DOI: 10.1155/2012/983801
Abstract:
The Financial Impact of Joining the Chain and Improving Hotel Rating: A Case Study in Russia  [PDF]
Lina Krengel
Open Journal of Business and Management (OJBM) , 2016, DOI: 10.4236/ojbm.2016.44066
Abstract: The objectives of this study were to consider the development of hotel chains in Russia and, further, to analyze the financial advantages or disadvantages of joining as part of the largest hotel chain’s membership, as well as to analyze the financial activity of the company before and after joining the chain. The theoretical foundation of this research was based on overall theories of economic development. This research was conducted within a case study framework. The research instruments used were interviews of hotel employees for thematic analysis, and chronological analysis of the hotel’s financial performance during two periods: 2010-11 and 2012-13. Findings of the research indicate that joining a well-known and large hotel chain as well as an improved hotel ranking has a significant financial impact on the hotel studied within this case study. It certainly improved the image of the hotel in the market, increased its reputation, and made it more recognizable.
Study on the Peer Effect of Unrelated M&As Decisions  [PDF]
Lina Yu
Modern Economy (ME) , 2017, DOI: 10.4236/me.2017.812096
Abstract: This paper takes 7464 pieces of M&As events for A-share listed companies in China from 2010 to 2015 as samples and investigates the industry peer effect of unrelated M&As decisions. The research shows that there exists the peer effect when companies make unrelated M&As decisions in the same industry. This paper also makes further examinations and finds that the M&As experience and scale of companies enhance the peer effect. Moreover, companies with more industry competitions have more obvious industry peer effect. This paper enriches the M&As decisions theory and has guiding significance in practice.
Research on the Innovation of Reading Promotion Service Model of University Library Based on Readers’ Characteristics—Taking the Library of Heilongjiang Bayi Agricultural University (HLAU) as an Example  [PDF]
Lina Li
Journal of Service Science and Management (JSSM) , 2018, DOI: 10.4236/jssm.2018.114026
Abstract: Based on the practical experience of reading promotion in the library of HLAU in recent years, this paper analyzes the reasons for the bottleneck of reading promotion in university libraries, expounds the problems that need to be solved urgently in the promotion of reading from the theoretical basis, student resources, financial support and leadership attention and proposes future development trends and directions, thus providing an effective way of reading promotion for the libraries of agricultural colleges and universities.
A Practical Research on Improving Reader’s Reading Literacy by Using WeChat Service under the Perspective of PIRLS and PISA2018  [PDF]
Lina Li
Creative Education (CE) , 2018, DOI: 10.4236/ce.2018.911124
Abstract: With the effective development of PIRLS and PISA2018 in China, research on reading literacy has developed more and more, while reading literacy has become a key indicator of a country’s soft power. The university library is an important place to cultivate college students’ reading literacy and has the responsibility of reading education. The development of WeChat services in colleges and universities provides a new way for their reading literacy training. Taking the library of Heilongjiang Bayi Agricultural University as an example, this paper expounds the construction of WeChat platform and the situation of WeChat service, and puts forward the main ways of improving the reading literacy of college students according to the actual work, aiming at giving full play for the university library to play their important role in the terms of cultivating the reading literacy of college students.
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