A Remark on the Solution for a Certain Nonlinear——Two-Dimenslonal Singular Integral Equation

<正>The main purpose of this remark is to study the nonlinaer singular integral equation for the unknown function ω(z) of complex variable z in the unit circle G. We obtain the representation of solution for above equation.     

世上最富有的女人

我刚和一位女友共度了四天。她嫁给了一个有钱人。他送给她的订婚礼物是价值35,000美元的红宝石戒指。母亲节时,他送给她价值25,000美元的翡翠项链。他给她250,000美元来重新装修他们占地五公顷的豪宅。她的浴室就花费了120,000美元来建。甚至连她的庞物狗都用刻有他名字的镀银餐盘进食。     

Meeting global deaf peers, visiting ideal deaf places: deaf ways of education leading to empowerment, an exploratory case study

In a flemish case study, deaf role models revealed a moment of awakening, indicated by the Flemish sign WAKE-UP Contact with deaf cultural rhetoric made them wake up, and deconstruct and reconstruct their lives, a process represented by a circle of deaf empowerment. Flemish deaf leaders mentioned acquiring this rhetoric during visits to deaf dream worlds (in Flemish Sign Language, WORLD DREAM): places with ideal conditions for deaf people. Such global deaf encounters (Breivik, Haualand, & Solvang, 2002) lead to the "insurrection of subjugated [deaf] knowledges" (Pease, 2002, p. 33). Whereas deaf education had never provided them with deaf cultural rhetoric and was depositing upon them oppressive societal conventions (Jankowski, 1997), a common sign language (Mottez, 1993) and global deaf experience (Breivik et al., 2002; Murray, in press) in barrier-free environments (Jankowski, 1997) provided deaf ways of deaf education (Erting, 1996; Reilly, 1995).     

An herbal El Dorado: the quest for botanical wealth in the Spanish Empire

Few historians of science would associate the Spanish Empire with scientific innovation. However, recent research is increasingly demonstrating the Crown's strong commitment to scientific research, particularly in the areas of botany, natural history and medicine. Although this commitment began in the 16th century, it reached full development in the 18th, when Enlightenment ideals led to growing interest in exploiting natural resources in the New World. Interest in new resources, which offered alternatives to silver and traditional cash crops, focused largely on medicinal herbs indigenous to the Americas. Herbs that provided 'miracle cures' for age-old diseases would bring both material and moral wealth to the Crown, and were thus pursued vigorously throughout Spanish America. The result was a search for an 'herbal' El Dorado, reminiscent of 16th-century expeditions in search of a mythical land of gold--only in this case, medicine, not metal, was the goal.     

《新技术与创新的经济学》近期论文摘要——风险投资：干中学的捕食-食饵动态角色

本文指出“捕食一食饵”范例的内因动态,可以作为高风险投资密度的产业与产业投资力度呈“盛衰”局面的解释。风险投资商大都热衷于投资具有显著经历以及大量优秀投资机会的产业,基于该考量,我们设计了一个模型。然而,当投资“用尽”了所有机会后,便倾向于转而利用大量尚未开发的机遇。最终呈现出的产业层面的交互力度会自然而然地引起风险投资周期愈加趋向于研究者所观察的模式。     

Polymorphisms of CYP1A1, GSTM1 and GSTT1 Loci as the Genetic Predispositions of Oral Cancers and Other Oral Pathologies: Tobacco and Alcohol as Risk Modifiers

Polycyclic aromatic hydrocarbons of tobacco require activation by phase I enzymes, such as cytochrome-P4501A1 (CYP1A1) to become an ultimate carcinogen, which are subjected to detoxification by phase II enzymes, especially glutathione S-transferases (GSTs). A study was designed to find whether genetic predisposition are risk modifiers of oral pathologies. The study included 102 cases with Oral Cancers (OCs), 68 cases with nonmalignant pathologies, 100 cases as control group. GSTM1 null genotype was associated with increased risk of OCs but not with benign pathologies. Deleted GSTT1 was associated with all pathologies. Both m1m2 and m2m2 polymorphisms of CYP1A1 were associated with oral pathologies.     

Parallel assessment of nutrition and activity in athletes: validation against doubly labelled water, 24-h urea excretion, and indirect calorimetry

The assessment of nutrition and activity in athletes requires accurate and precise methods. The aim of this study was to validate a protocol for parallel assessment of diet and exercise against doubly labelled water, 24-h urea excretion, and respiratory gas exchange. The participants were 14 male triathletes under normal training conditions. Energy intake and doubly labelled water were weakly associated with each other (r = 0.69, standard error of estimate [SEE] = 304 kcal x day(-1)). Protein intake was strongly correlated with 24-h urea (r = 0.89) but showed considerable individual variation (SEE = 0.34 g kg(-1) x day(-1)). Total energy expenditure based on recorded activities was highly correlated with doubly labelled water (r = 0.95, SEE = 195 kcal x day(-1)) but was proportionally biased. During running and cycling, estimated exercise energy expenditure was highly correlated with gas exchange (running: r = 0.89, SEE = 1.6 kcal x min(-1); cycling: r = 0.95, SEE = 1.4 kcal x min(-1)). High exercise energy expenditure was slightly underestimated during running. For nutrition data, variations appear too large for precise measurements in individual athletes, which is a common problem of dietary assessment methods. Despite the high correlations of total energy expenditure and exercise energy expenditure with reference methods, a correction for systematic errors is necessary for the valid estimation of energetic requirements in individual athletes.