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Search Results: 1 - 10 of 3079 matches for " Xuan Peiqi "
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Supersymmetry of the Schroedinger and Korteweg-de Vries operators
Dimitry Leites,Xuan Peiqi
Physics , 1997,
Abstract: In 70's A.A. Kirillov interpreted the stationary Schroedinger (Sturm-Liouville) operator as an element of the dual space to the Virasoro algebra, i.e., the nontrivial central extension of the Witt algebra. He interpreted the KdV operator in terms of the stabilizer of the Schroedinger operator. By studying the coadjoint representation of the simplest nontrivial central extension of a simplest stringy superalgebra, the Neveu--Schwarz superalgebra, Kirillov connected solutions of the KdV and Schroedinger equations. We extend Kirillov's results and find all supersymmetric extension of the Schroedinger and Korteweg-de Vries operators associated with the 12 distinguished stringy superalgebras. We also take into account the odd parameters and the possibility for Time to be a $(1|1)$-dimensional supermanifold. The superization of construction due to Khesin e.a. (Drinfeld--Sokolov's reduction for the pseudodifferential operators) relates the complex powers of the Schroedinger operators we describe to the superized KdV-type hierarchies labeled by complex parameter. Our construction brings the KdV-type equations directly in the Lax form guaranteeing their complete integrability.
Ordering and Pricing Strategies for Fresh Products with Multiple Quality Levels Considering Consumer Utility  [PDF]
Peiqi Ma
American Journal of Operations Research (AJOR) , 2015, DOI: 10.4236/ajor.2015.53015
Abstract: In this paper, considering a scenario in which there are two quality levels of fresh products and introduction of consumer utility function, we studied the optimal ordering and pricing strategies under certain quantity. Our results showed that, facing the two quality levels of fresh products, retailers would not benefit from sales of lower quality of fresh products with the deterministic demand. In the pursuit of profit maximization, the initial order quantity is smaller than the potential demand for market.
The Ecological Sports Tourism Tourists Behavior Investigation—The Case of Liuxi River National Forest Park in Guangzhou  [PDF]
Peiqi Li
Chinese Studies (ChnStd) , 2017, DOI: 10.4236/chnstd.2017.62012
Abstract: In recent years, forest park becomes ecological sports tourism tourists’ preference travel destination. The article using the questionnaires and factor analysis to analyze the customer behavior motivation of ecology sports tourists in Guangzhou Liuxi river forest park. Based on the research, we can find: after the ornamental tourist motives, sports leisure motivation becomes one of the important motivations of ecological sports tourism tourists. Secondly, ecological sports tourism tourist consumption intention will be obvious, but the consumption level is not high. Thirdly, safety satisfaction is a general level of the ecological sports tourism tourists. The factors that influence tourist motivation and satisfaction degree include the ecological environment, ecological sports tourism facilities, ecological cultural conditions and the ecological sports services. Therefore the paper puts forward some advice to improve the ecological sports tourism theme features of infrastructure, service content and service level.
Effective Intervention in Daily Education: A Case Study on Improving Junior Middle School Boys’ Academic Level  [PDF]
Xuan Zhao
Psychology (PSYCH) , 2017, DOI: 10.4236/psych.2017.86050
Abstract: The boy crisis is not unique in China. It has become an international phenomenon. Boy crisis is a kind of social phenomenon from recessive to dominant. Some Chinese scholars agree that boys’ performance at all levels of education is falling behind the girls, which is a common situation of boy crisis. This paper focuses on socialization of boys’ gender role, and summarizes that physiological differences, improper school education causes, absence of father’s role in family education exacerbate and aggravate junior middle school boys’ learning disabilities and academic inferiority. Shanghai YP Experimental School (SYPES) is a private junior middle school found in 1995, which devotes to improving junior middle school boys’ academic level through effective intervention as to create enough space for boys’ growth; promote objective evaluation of boys’ inappropriate behavior; mobilize the power of parents; create more display platform in campus; strengthen the development of school-based curriculum, to stimulate the interest of boys through multiple courses; create a good dynamic classroom environment, and effectively improve the interest and efficiency of boys in classroom learning; form flexible and effective mechanism of process evaluation to keep the boys’ interest in learning; develop boys’ good learning habit in a planned way, and promote the sustainable development of boys; promote boys’ teambuilding to promote the cooperation and competition consciousness in daily education and accumulate local experience.
Finding Lost Words: How Non-Profit Organizations in China Effectively Participate in Policy Advocacy?
—Based on the Successful Experience of Friends of Nature

Xuan Wu
Open Journal of Social Sciences (JSS) , 2018, DOI: 10.4236/jss.2018.64001
Non-profit organizations’ policy advocacy is an important force in promoting the scientification and democratization of public policies in China. However, in the overall structure of a strong government and a weak society in China, many problems exist in the process of public policy advocacy by NPOs. There is an urgent need to select typical cases to tap valuable local experiences. By combing the development history and major policy advocacy activities of Friends of Nature since its founding in 1994, this paper analyzes the effective ways for non-profit organizations to participate in policy advocacy. At the level of government, policy making should be more open and acceptable. At the level of non-profit organizations, efforts should be made to improve the political legitimacy, administrative legitimacy and internal legitimacy of non-profit organizations while enhancing the level of specialization, efficiently integrating the resources of all parties and exploring diversified ways of advocating.
A Review of Researches Workplace Loneliness  [PDF]
Xuan Zhou
Psychology (PSYCH) , 2018, DOI: 10.4236/psych.2018.95064
Abstract: Workplace health psychology is supported and upheld by psychologists, management scientists, sociologists and clinical psychology. Workplace loneliness has become a hot research topic in western occupational health psychology. The research about the spread of employee workplace loneliness in China is lagging behind. As a common negative emotion in workplace, workplace loneliness can bring in a series of negative effects on employees and individuals. At present in China, the transformation of the society and the rapid development of the economy have brought many problems to the workplace. To some extent, these problems will lead to the spreading of the common feeling of loneliness in the workplace. Therefore, it is necessary to study the crisis of workplace loneliness of our employees. At present, the study of loneliness in the workplace is still in its preliminary stage. The main purpose of this paper is to review the main subject of the study of loneliness in the workplace abroad, and to introduce its concepts, dimensions, measurement methods and related research into the country, and provide reference for Chinese scholars to study the rising crisis, that is, the sense of loneliness in the workplace.
Concentrated Growth Factor from Autologous Platelet Promotes Hair Growth in Androgenetic Alopecia  [PDF]
Poh-Ching Tan, Yun Xie, Wei Wu, Peiqi Zhang, Yiming Gao, Kai Liu, Shuangbai Zhou, Qingfeng Li
Journal of Biomedical Science and Engineering (JBiSE) , 2019, DOI: 10.4236/jbise.2019.123014
Abstract: Studies have shown that platelet concentrates can induce the proliferation of the dermal papilla and the vascularization of the perifollicular tissue, as well as accelerate the telogen-to-anagen transition, thereby promoting the regrowth of hair improving the appearance of hair loss. Herein, we report on the application of a new, modified form of platelet concentrates, namely, concentrated growth factors (CGFs), in 15 cases of androgenetic alopecia (AGA). 15 cases of androgenetic alopecia were treated with the use of monthly, subcutaneous injections of autologous CGF in the scalp. A total of 3 injections were administered 4 weeks apart, and the patients were followed up for 6 months. Assessments were performed before the treatments and at 4, 8, 12 and 24 weeks after the first treatment. The treatment outcomes were assessed by taking macroscopic photographs and trichoscopic photomicrographs, as well as by using the Global Aesthetic Improvement Scale (GAIS) and the patient satisfaction survey. In order to determine the safety of the treatment, the injection area was observed for signs of infection or mass evaluation. The photographs showed significant improvement in hair appearance after injections of CGF. The hair photomicrographs showed that CGF promoted the regrowth of hair in balding areas, with an increased hair density and an increased ratio of terminal to vellus hair. The GAIS suggested that CGF treatments were effective in treating AGA, and the majority of patients were satisfied with their improvement. In addition, treatments resulted in a faster rate of hair growth and a decrease in the greasy and unpleasant sensation of the hair of the patients. At the last visit, none of the 15 patients reported experiencing side-effects during the follow-up period. To conclude, the application of CGF can be an effective method in the treatment of androgenetic alopecia.
Characteristic and mechanism of inactivating algae with O3 and ClO2
HU Wenrong,Liu Peiqi,PEI Haiyan,

科学通报(英文版) , 2003,
Abstract: Both O3 and ClO2 have a high effect on inacti-vating-algae in source water with no forming THMs which do harm to human in producing drinking water, so they will be favorably substituted for Cl2. In order to make certain of the mechanism of inactivating algae with O3 and ClO2, the algal cell number change and its different characteristics of figures and structures in treated and untreated water have been studied by the microscopy and SEM and the mode of inactivating algae has been inferred. The results show that the mechanism of inactivating algae by 03 is not completely identical with that by ClO2. The actual reaction process and efficiency have been controlled by many factors, such as the different characteristics of oxidants and algal cells.
Pattern and Policies of Mainland China’s MICE Industry  [PDF]
Jianhua Wu, Xuan Xiao
Chinese Studies (ChnStd) , 2012, DOI: 10.4236/chnstd.2012.12002
Abstract: China’s MICE industry has witnessed rapid growth over the past decade. In the mainland China, however, its further development is affected by deficiencies in the planning and controlling policies. This short report will introduce the pattern of its MICE industry, discuss the merits and deficiencies of local and state-level policies, so as to explore directions for institutional improvement. The division of five econoimic zones was first put forward by Feng Jun (2006) with a view to promoting exhibition business in mainland China. The framework was later enriched by Zhang Wei, Vice Chairman of the China Council for the Promotion of International Trade. This short report illustrates the detailed features of each eco-nomic zone, as well as their incentive policies, with the hope of helping the local and central governments in their policy-making for MICE industry.
Waving Web in Tourism Higher Education—Case Study at Tourism School of GUBS  [PDF]
Xuan Xiao, Jianhua Wu
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.35097
Abstract: Purpose: The purpose of this paper is to introduce some approaches to wave web in tourism higher education, with analyses on key successful factors. Design/methodology/approach—The methods of investigation used in this study include observation, in-depth interviews, survey and secondary data. Findings: A comparison study indicates that virtual learning environment is a good solution to massive course load in tourism higher education. The paper figures out three effective approaches based on Blackboard System, and KSFs of online implementation, such as instructor preparation, course development, instructor accessibility, course monitoring and technology support. Originality/value: This paper illustrates the contribution of computer aided instruction and virtual learning environment to tourism higher education through case study.
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