Factors influencing the success of PPP at feasibility stage – A tripartite comparison study in Hong Kong

Public Private Partnerships (PPP) have been used extensively in both developing and developed countries in delivering various types of projects, ranging from road construction, railway transport systems to health care facilities and schools. Critical success factors of PPP schemes at the implementation stage were identified. It is however more important for decision-makers to identify the factors for feasibility evaluation of adopting the PPP at the outset. This study aims to explore the key successful ingredients to be assessed at the initial stage of PPP projects as perceived public sector, private consortium and general community so as to attain a “triple win” scenario, via a questionnaire survey and a series of expert interviews conducted in Hong Kong. Survey results indicate that the most critical factor for evaluating the feasibility of PPP projects, especially to the general community, is an acceptable level of tariff. Cost effectiveness and financial attractiveness are the most important evaluation factors as ranked by the public sector and private consortium respectively. In addition, the existence of a long-term demand for the proposed services, availability of strong private consortium, alignment with government’s strategic objectives, as well as reliable service delivery are also rated as highly important to the success of PPP schemes. Addressing the tripartite expectations is indispensable to ensure the feasibility and successful delivery of public services and infrastructure projects via PPP schemes.     

State,profession, and religion: Reflecting on spirituality and indigenous social work in China in the Yushu Earthquake Relief

ABSTRACT

On April 14, 2010, a massive earthquake measuring 7.1M_s struck the Yushu Tibetan Autonomous Prefecture, Qinghai Province, China. Its scale notwithstanding, it has received much less national and international attention than the also immense Wenchun quake of 2008 in Sichun Province. This field report discusses the contribution of religion and spirituality in postdisaster relief in Yushu. It also calls for critical reflection on the issue of homogenization in the discussion of indigenous social work in China, and perhaps in other multiethnic countries in the world.     

Health Status and Risk Behaviors of Sexual Minorities Among Chinese Adolescents: A School-Based Survey

This study aimed to examine the association between sexual orientation and health disparities among a stratified random sample of 3776 secondary students in Hong Kong. The prevalence of homosexuality and bisexuality were 1.5% and 2.6% in boys and 1.8% and 3.7% in girls, respectively. A total of 10.7% of boys and 8.8% of girls were unsure of their sexual orientation. Homosexual and bisexual boys reported poorer physical and mental health than their heterosexual peers. Homosexual and bisexual boys were more likely to engage in smoking, frequent drinking, and vaginal sex and be subjected to sexually transmitted disease and sexual victimization. However, lesbian and bisexual girls were less likely to engage in risky health behaviors except for smoking and being subjected to sexual victimization. There is a gender-specific problem that may warrant prevention and intervention programs to address the unique health issues facing homosexual and bisexual adolescents in Hong Kong.     

城乡迁移与精神健康:基于上海的实证研究

改革开放以来,中国见证了规模甚巨的城乡迁移运动,社会学界对这一现象进行了广泛的研究,但对进入城市的移民的精神健康问题则少有涉及。本研究基于对上海城乡迁移群体的多阶段抽样调查以了解这一群体的精神健康状况。问卷的分析结果显示,25%的男性和6%的女性精神健康状态不好。进一步的路径分析显示,移民压力、社会支持和迁移意义以不同的路径影响精神健康。论文建议政府和社会各界要充分回应移民群体的精神健康需求。     

A dynamic programming approach of finding an optimal broadcast schedule in minimizing total flow time

We study the problem of (off-line) broadcast scheduling in minimizing total flow time and propose a dynamic programming approach to compute an optimal broadcast schedule. Suppose the broadcast server has k pages and the last page request arrives at time n. The optimal schedule can be computed in O(k³(n+k)^k−1) time for the case that the server has a single broadcast channel. For m channels case, i.e., the server can broadcast m different pages at a time where m < k, the optimal schedule can be computed in O(n^k−m) time when k and m are constants. Note that this broadcast scheduling problem is NP-hard when k is a variable and will take O(n^k−m+1) time when k is fixed and m ≥ 1 with the straightforward implementation of the dynamic programming approach. The preliminary version of this paper appeared in Proceedings of the 11th Annual International Computing and Combinatorics Conference as “Off-line Algorithms for Minimizing the Total Flow Time in Broadcast Scheduling”.     

4-氯代苯酐碱熔融法制备4-羟基苯酐

采用常温常压下的碱熔融法 ,由 4 -氯代邻苯二甲酸酐制备 4 -羟基邻苯二甲酸酐 ,测定了产物的理化性质和红外光谱、核磁共振氢谱 ,考察了温度和反应物、添加剂及碱用量等条件对产物收率和纯度的影响     

Motivation for ISO 14000 certification: development of a predictive model

Environmental issues have become critical concerns of businesses in recent years. The Singapore Environment Ministry is urging organizations to consider adopting the ISO 14000 Environmental Management Standards. The main purpose of this study was to investigate and identify a number of variables which would be able to predict the motivation of organizations in adopting the ISO 14000 Standards. Through extensive literature search eight possible predictive variables/factors (cost savings, top management concern, employee welfare, meeting environmental regulations, meeting customer expectations, concern over trade barriers, following head office environmental practices, and gaining competitive advantages) were identified. In total, 300 pre-tested survey questionnaires were mailed out to companies from the Electronic and Chemical industries in Singapore. A response rate of about 20% was obtained. The survey instrument was tested for reliability and validity. Using stepwise discriminant analysis, a predictive discriminant function was developed. Only four out of the originally identified eight variables were included in the model. Possible benefits of such a model for Singapore and other industrializing countries are highlighted.     

Attachment to Mothers and Fathers during Middle Childhood: Associations with Child Gender, Grade, and Competence

Attachment relationships of first, third, and fifth graders with their mothers and fathers, and their associations with self‐perceived and teacher‐rated competence, were investigated. Children rated their attachment security with mothers and fathers using the Kerns security scale. Children's perceptions of academic and peer competence were measured using Harter's self‐perception profile, and teachers also rated children's competence. Girls felt greater attachment security to their mothers than to their fathers, and boys felt greater attachment security to their fathers than did girls. Greater attachment security with both mothers and fathers was associated with children's perceptions of greater peer and academic competence, and this association was stronger for older children. A greater sense of attachment security with both parents was associated with greater competence than a sense of attachment security with only one parent. Teacher‐rated competence was significantly related to attachment security with mothers but not fathers.