Impact of metabolic status on the association of serum vitamin D with hypogonadism and lower urinary tract symptoms/benign prostatic hyperplasia

Objective: The objective of this study is to investigate the impact of metabolic status on associations of serum vitamin D with hypogonadism and lower urinary tract symptoms (LUTS)/benign prostatic hyperplasia (BPH).

Patients and methods: A total of 612 men underwent physical examination, biochemical/hormonal blood testing, and transrectal prostate ultrasound. Moreover, the subjects filled out standard questionnaires for identification and grading of LUTS and hypogonadism symptoms. Parameters were statistically compared with independent t-tests and correlation analyses.

Results: Vitamin D levels positively correlated with total testosterone (TT) but not with prostate volume or International Prostate Symptom Score (IPSS). Patients with metabolic syndrome had significantly lower vitamin D levels, which were not correlated with TT, prostate volume, or IPSS. However, vitamin D was positively correlated with TT, and negatively correlated with prostate volume and quality-of-life IPSS in subjects without metabolic syndrome.

Conclusion: The clinical usefulness of vitamin D for treatment of hypogonadism or LUTS/BPH varies according to metabolic status.     

概率论中随机变量函数若干问题探讨

文章给出了连续型随机变量差以及积的分布密度公式.针对两个独立同服从标准正态分布的随机变量详细推导了其积的分布密度公式和特征函数,并给出了涉及标准正态分布随机变量乘积函数分布的几个结论.     

融资融券制度与市场定价效率——基于卖空摩擦的视角

我国融资融券制度不同于国外成熟市场的一个重要特征是存在较大的卖空摩擦,但这一卖空摩擦对市场定价效率的影响及其作用机制尚未被研究揭示.本文运用双重差分固定效应模型、处理效应模型和倾向性匹配双重差分模型,研究了融资融券制度中的卖空摩擦对市场定价效率的影响及其内在机制.实证结果表明,融资融券制度中的卖空摩擦抑制了市场参与者对公司特质信息的充分挖掘,促使其过度利用市场或行业信息进行交易,从而延缓了公司特质信息融入股价,加速了市场或行业信息融入股价,最终加剧了股价同涨同跌现象,不利于市场定价效率的提高.本文研究结论为监管部门合理扩大融资融券标的范围、降低交易成本和交易门槛,营造高效的市场环境提供了依据和思路.     

“推广街区制”的规划思辨

2016年2月,《中共中央国务院关于进一步加强城市规划建设管理工作的若干意见》中明确了"推广街区制"和"开放封闭小区"为我国住宅未来发展的方向。在《意见》印发后,与之相关的内容也成为公众和城市规划专业领域共同关注的焦点。本文在解读《意见》的基础上,深入探讨"推广街区制"在围墙设置、街区尺度、街道活力、产权划分、社会公平等方面引发的一系列争议,并进一步提出当前在城市规划中"推广街区制"的实施路径。     

China–Italy–Ticino Family Business Cooperation Forum Held in Ningbo

Nearly 200 family business leaders from China, Italy and Switzerland, experts, scholars and "Ningbo Enterprise Successors Union" met in Jiangbei District of Ningbo City on September 17 to attend the first China Italy Ticino Family Business Cooperation Forum.     

A lower bound for the adaptive two-echelon capacitated vehicle routing problem

Adaptive two-echelon capacitated vehicle routing problem (A2E-CVRP) proposed in this paper is a variant of the classical 2E-CVRP. Comparing to 2E-CVRP, A2E-CVRP has multiple depots and allows the vehicles to serve customers directly from the depots. Hence, it has more efficient solution and adapt to real-world environment. This paper gives a mathematical formulation for A2E-CVRP and derives a lower bound for it. The lower bound is used for deriving an upper bound subsequently, which is also an approximate solution of A2E-CVRP. Computational results on benchmark instances show that the A2E-CVRP outperforms the classical 2E-CVRP in the costs of routes.     

Being a desirable migrant: perception and racialisation of Icelandic migrants in Norway

In the aftermath of the financial crisis that hit Iceland in October 2008, increased numbers of Icelanders migrated to Norway to seek employment due to difficult economic circumstances in Iceland. Using critical perspectives from postcolonial studies and critical whiteness studies, the paper explores how these Icelandic migrants in Norway make sense of their new position as economic migrants within a global economy characterised by a growing sense of precariousness, while past inequalities and racism continue to matter. We also examine how these migrants are perceived in Norwegian media, and how social discourses of Icelandic migrants reflect larger Norwegian debates on racism, desirability and cultural belonging. Media discourses in Norway and interviews with Icelandic migrants reveal a hierarchy of acceptability of migrants. Icelanders are positioned as highly desirable compared to other migrant groups due to the intersection of perceived racial belonging, nationality and class. Our discussion contributes, furthermore, towards a critical analysis of the category migrant, by exploring how the term immigrant (innvandrer/innflytjandi) is used in narratives of Icelandic migrants in Norway and in Norwegian media discussions, showing the negative and racialised connotations of the term immigrant and how its understanding is linked with vulnerable positions and discrimination.     

Gambling,Drinking and Quality of Life: Evidence from Macao and Australia

The investigation of the interface between psychological constructs, compulsive consumption of alcohol and pathological gambling is an important avenue for development of future initiatives in social marketing or prevention programs. This cross-cultural study attempts to bridge the gap in literature by providing an evaluation of the predictive ability of psychological variables such as gambling urge, gambling-related erroneous cognitions and comorbid alcohol consumption on pathological gambling behaviour and its impact on overall quality of life indicators. Participants consist of 445 Macao and Australian young adults (Mean age = 23 years). Results indicate that probable pathological gamblers as compared with non-gamblers reported significantly lower quality of life in all domains—physical health, psychological well-being, social relationships and environment. Adults who drank more alcohol and have stronger erroneous cognitions evidenced higher pathological gambling behavior. Our research model fits both cohorts and interestingly, erroneous gambling-related cognitions serve as a full mediator for the predictive relationship between gambling urge and pathological gambling in the Macao sample, but serve as a partial mediator in the Australian sample. Targeting erroneous cognitions in future social marketing or preventive campaigns should demonstrate to be an important strategy in reducing the effects of urge to gamble among at-risk individuals. Further implications for the industry, marketing and governmental strategies are discussed.     

银行证券保险业监管比较

银行、证券、保险三行业因其业务特性不同,从而面临的主要风险及风险表现的特征也不同。各行业的风险管理既表现出针对主要风险、服从业务特征的共性,也表现出在具体管理技术、方法上的差异性。因此,三行业的监管导向及监管实践都存在着差异和侧重：银行业突出系统性、监管协调和对资产的监管;证券业强调监管对象的多层次性、监管的透明性和对业务的监管;保险业以承保风险为核心,突出母国鉴定和对负债的监管。     

在校大学生法律意识现状——基于太原理工大学在校生问卷调查

大学生法律意识是指大学生这一类特殊群体对法及现行法律和各种法律现象的观点和认识。是一个由法律知识、法律观念、法律观点组成的复杂系统。文章以太原理工大学在校大学生为调查对象,分别从法律知识、法律观念、法律观点三个方面对大学生法律意识现状进行了调查研究。结果显示,大学生已经逐渐认识到法律的重要性,学法的热情也较高,所掌握的法律知识较之前也有大幅度的提高;但他们对所学法律知识的内化程度不高,缺乏宪政意识,同时也存在着厌诉的情绪;在法治观念上存在着认知偏差,对法律认识缺乏理性思维,学法功利性较强,缺乏法律信仰。