非线性热传导方程u_t-Δu=D~βf(u)的Cauchy问题的整体解及渐近性

本文利用压缩映象原理及线性方程 Cauchy 问题的解的衰减性佶计,研究了一类非线性热传导方程 Cauchy 问题的整体解的存在唯一性及渐近性,得到当初值及非线性项满足一定条件之下Cauchy 问题的适当性。从而补充了文[3]的结果,首次指出了文[1]的结果是对半线性方程独有的。     

AIDS as a political issue: working with the sexually prostituted in the Philippines

An estimated 200,000-500,000 men, women, and children work in prostitution in the Philippines in a variety of venues, including brothels, nightclubs, pubs, massage parlors, and other legitimate entertainment establishments. Few, however, are voluntary prostitutes. Many people who work as prostitutes have been recruited from the provinces, kept in conditions similar to slavery, and forced to earn money from prostitution to pay for their transportation, board, and lodging. Many prostitutes work in urban centers and tourist resorts in the countryside. During the 1970s, then President Ferdinand Marcos promoted tourism as a major industry, effectively marketing attractive Filipinas to tourists. Sex tourism has flourished in the country ever since. Thousands of prostitutes are also located in Olongapo and Angeles, 2 cities north of Manila, from where they serve the sexual desires of US military personnel. The presence of US military personnel in the Philippines has always been associated with prostitution. The country's social hygiene centers, prostitutes in Manila and Davao, and AIDS education are briefly discussed.     

苏州市人口老龄化分析

基于对苏州市第四次人口普查人口年龄结构的分析,本文认为苏州市已进入人口老年型早期。文中论述了该市人口老龄化的现状、过程及趋势,剖析了过去与未来主导这一进程的不同的人口学因素,特别强调了控制人口增长对这一进程的作用。文中预测现在和今后的二十年内人口老龄化发展较缓,总抚养比较低,正届人口构成上的“黄金时期”,面临着实现经济跃升的契机。其后,人口老龄化将以空前的速度进行。抓住当前的契机也是今后从根本意义上解决好老龄人口问题所必需的。     

The new treatment mode research of hepatitis B based on ant colony algorithm

Hepatitis B (HB) is a deadly disease that has a severe impact on infected individuals. In China, not only are the incidence and infection rates of HB very high, but also many HB patients suffer from mental illness associated with anxiety and fear because of HB-associated symptoms. This exacerbates the patients’ condition, potentially increasing the risk of mortality. In this paper, we propose a new treatment mode to improve the therapeutic efficiency and patients’ satisfaction with their healthcare. In a single process of this new treatment, several patients with similar disease symptoms are treated by one doctor at the same time. This new treatment mode can not only relieve the anxiety and fear of HB patients, and improve patients’ cognition rate of HB, but also reduce the HB infection rate, slow down the progression of disease symptoms, and shorten the course. If patients with similar disease symptoms are to be grouped together, there is a need to determine the optimal patient batch combination, which can be solved in the new mode, called patient combined problem (PCP). We also constructed a mathematical model of PCP, and present the ant colony (AC) algorithm and Enhanced AC with a P-3-exchange operator for PCP in the new treatment mode in this paper. We also performed an experiment that showed that our proposed algorithms are very fast and effective for solving this problem.

     

商业生态系统价值结构、企业角色与战略选择

与强调企业在商业生态系统中如何攫取领导地位的战略观不同,本文把研究重心放在了企业战略如何塑造成功商业生态系统上。首先,本文构建了成功商业生态系统的价值结构模型,为企业的战略选择提供了微观与宏观上的方向与路径。其次,本文讨论了与成功商业生态系统相匹配的企业角色,并结合价值结构模型定义了与企业角色相匹配的战略任务。最后,在此基础上,重点阐述了骨干型企业在如何塑造成功商业生态系统过程中具体的宏观战略选择路径与机制问题。     

如何建立社区支持农业中的消费者信任——惠州四季分享有机农场的个案研究

信任对 CSA 经济的可持续至关重要。 文章基于信任建立过程和信任发展的阶段性理论,通过单案例的研究方法探讨如何构建社区支持农业中的消费者信任。 研究结果表明:消费者信任的建立分为初始信任与持续信任两个阶段。 在潜在消费者的初始信任阶段,直接或间接关系、公开的信息、农 场主特征和消费体验会引发消费者的计算过程、转移过程、预测过程、意图过程和能力过程而建立消费 者初始信任。 在会员的持续信任阶段,用户体验和社会联系会引发消费者的预测过程和意图过程而维 持会员对农场的信任。     

中国人均碳排放权分配方案预测研究

气候变化是21世纪最严重的全球性问题之一.即使《巴黎协议》获得通过,仍有许多国家采取各种方式拒绝承担减排责任.已有减排分配方案也多是临时性的,尚有许多争议.为了能更好地完善后续减排分配方案,很多学者都对国家减排责任的分配进行了探讨,但是由于以下缺点:否认发达国家需要承担的历史减排责任或发展中国家对未来的减排责任,因此不能提供更为公平的分配方案.在此背景下,文章旨在预测中国到2050年碳排放量,以人均碳排放量为基础,分析中国的碳排放权.     

Identity Development in an International Transracial Adoptive Family: A 5-Year Case Study

Our case study focused on the adoptive identity development of two female Chinese adoptees over the course of five years (from when they were 7 and 9 until they were 12 and 14 years old, respectively). The study investigated the adoptive parent’s and family identities through six interviews with the adoptive mother, adoptees’ behavioral adjustment reported by the mother, two unstructured observations, and exploration of adoptees’ narratives. The study was guided by a narrative-based framework situated with the cultural socialization approach. Results highlight four central themes: 1) becoming Chinese-Americans; 2) meaning related to adoption is both spoken and unspoken; 3) a we-ness identity, and 4) social-cultural contexts of identity work. Findings demonstrate the incorporation of adoption and the adoptees’ race and culture into the adoptive parent’s and family identities. Findings further illuminate that one’s identity is developed within personal, familial, and social-cultural contexts.     

Let Me Go: The Influences of Crawling Experience and Temperament on the Development of Anger Expression

Infants’ emerging ability to move independently by crawling is associated with changes in multiple domains, including an increase in expressions of anger in situations that block infants’ goals, but it is unknown whether increased anger is specifically because of experience with being able to move autonomously or simply related to age. To examine the influence of locomotion on developmental change in anger, infants’ (N = 20) anger expressions during an arm restraint procedure were observed longitudinally at a precrawling baseline assessment and 2 and 6 weeks after the onset of crawling. Infant age at each crawling stage was unrelated to the frequency of anger expressed in response to arm restraint. At 6 weeks postcrawling onset, infants whose mothers rated them as temperamentally higher in distress to limitations, compared with those rated lower, showed a greater increase in the frequency of anger expressed during the arm restraint relative to earlier assessments and took longer to reduce the frequency of anger expressed when no longer restrained. Findings suggest that experience with autonomous crawling has an effect on anger expression, independent of age, and that a temperamental tendency to become distressed by limitations may exacerbate the effect of crawling on anger expression.