死后血浆和溶血样本中IgE的稳定性

目的 探究死后血浆和溶血样本中免疫球蛋白E(immunoglobulin E,IgE)经过不同保存条件及冻融处理后的稳定性.方法 选取39例死后48 h内非冷冻尸体的心血样本,其中20例取血浆样本,19例取全血制成溶血样本.将样本置于-20℃、4℃、25℃条件下保存28 d及-80℃条件下保存1年以探究IgE在不同保存...     

Explaining the Reversed Gender Gap in Political Consumerism: Personality Traits as Significant Mediators

Research on political consumerism documents a persistent reversed gender gap, as women boycott and buycott products more often than men. Previous efforts to explain the reversed gender gap rely on classical theoretical models developed to illuminate gender differences in political participation in general. Accounting for socio‐economic and situational factors as well as socialization leaves a significant amount of the reversed gender gap unexplained, though. Adhering to recent empirical evidence of personality as an important factor influencing political behavior, we argue that gender differences in personality traits could provide an alternative explanation to account for gender disparities in political consumerism. We use original survey data specially designed to measure political consumerism in Switzerland, which also include the Big Five model of personality. We find empirical evidence that gender differences in personality traits, in particular agreeableness, explain a significant portion of the reversed gender gap in political consumerism.     

The Stability of 4-Chloromethcathinone in Blood and Vitreous Humor

We present results of our study on the stability of 4-chloromethcathinone (4-CMC) in authentic postmortem peripheral blood and vitreous humor samples. The stability of 4-CMC was determined in postmortem blood samples (for a period of 90 days) and vitreous humor (30 days) at three different temperatures: −15°C, +4°C, and + 23°C. The analyses were carried out using ultra-high-performance liquid chromatography coupled with triple-quadrupole tandem mass spectrometry (UHPLC-QqQ-MS/MS). In both materials, the lowest 4-CMC stability was demonstrated at room temperature. The blood samples stored in a freezer (−15°C) showed stability for the entire study period (90 days), while in the case of the vitreous humor sample stored at the same temperature the concentration of the substance decreased by 53% after 30 days. The study carried out in authentic postmortem blood and vitreous humor samples confirms the previous reports of 4-CMC instability in biological material. Authors suggest that the biological material should be stored frozen until analyses are carried out as soon as possible after collection of the material.     

Rejecting representation? Party systems and popular support for referendums in Europe

Under what conditions do citizens favor deciding political issues by popular vote? Models of support for popular vote processes usually consider the influence of individual attitudes such as political trust and interest in politics. But much less is known about the effect of institutional variables on support for popular vote processes. This article builds on research showing that disaffection with elected officials shapes support for referendums by considering the influence of the party system. First, an analysis of multilevel data from twenty-four European democracies indicates that individuals are more supportive of referendums in countries with fewer effective political parties. Second, a mediation analysis provides evidence that the number of parties influences referendum support through individual-level political trust and external efficacy. Where there are fewer viable parties, feelings that elected officials are unresponsive tend to increase popular support for referendums. These findings suggest a trade-off between available representation by political parties and support for direct influence over public policy.     

The Attitudes of the Chinese Middle Class Towards Democracy

Little has been done to quantitatively establish the connection between the middle class and a specific regime type. In an effort to fill in the gap, this study uses Asian Barometer survey dataset to examine the attitudes and orientation of China’s rising middle class. We find that the Chinese middle class does show higher democratic orientation than those we categorize as lower class, but only if class is defined by occupation or by self-identification, and not by income level. We interpret this result to mean that economic development offers new life experiences with the creation of new types of professions and enhances people’s agreement with modern democratic values by arousing people’s consciousness of their new social class status.

Gender Differences in Political Knowledge: Distinguishing Characteristics-Based and Returns-Based Differences

This study assesses whether gender-based differences in political knowledge primarily result from differences in observable attributes or from differences in returns for otherwise equivalent characteristics. It applies a statistical decomposition methodology to data obtained from the 1992–2004 American National Election Studies. There is a consistent 10-point gender gap in measured political knowledge, of which approximately one-third is due to gender-based differences in the characteristics that predict political knowledge, with the remaining two-thirds due to male–female differences in the returns to these characteristics. The methodology identifies the relative contribution of the predictors of political knowledge to each portion of the gap, and then uses this information to elucidate the underlying sources of the political knowledge gender gap and its prognosis. Education is the characteristic that most clearly enlarges the gap, with men receiving significantly larger returns to political knowledge from education than women. Group membership reduces the gap as women obtain gains in political knowledge from belonging to organizations that do not accrue to men. However, these gains are not sufficient to significantly reduce the gap.

Development and Consequences of Referendum Campaigns in Switzerland, 1981-1999

Since the early 1990s, new forms of referendum campaigns have emerged in the Swiss political arena. In this paper, we examine how referendum campaigns have transformed in Switzerland, focusing on a number of features: their intensity, duration and inclusiveness (i.e., the variety of actors involved). These features are assumed to change in the long run in response to societal changes and in the short run as a function of variations in elite support. We further argue that public knowledge of ballot issues depends on the characteristics of campaigns. To formally test our hypotheses, we draw on advertisement campaigns in six major Swiss newspapers in the four weeks preceding each ballot from 1981 to 1999 and develop a structural equation model. We indeed find that the duration of referendum campaigns has increased over time, while their inclusiveness has decreased. Most importantly, we find that pub­lic knowledge is strongly related to the characteristics of campaigns.     

构建中美核战略稳定性框架:非对称性战略平衡的视角

权力转移导致中美战略竞争加剧,维护中美战略稳定成为攸关中美关系发展以及世界和平与稳定的重大问题。构建中美核战略稳定性框架是实现中美战略稳定的基石。传统战略稳定理论主要基于美苏两大对称性阵营的敌对关系,对于不对称性和动态权力转移背景下的中美核战略稳定性的理论解释力和实践指导性不足。基于非对称战略平衡视角,中美核战略稳定性框架应以保证中国第二次核打击能力为基础。在机制层面,中美要加强交流、协商和谈判以建立相关机制,逐渐形成中美核战略关系的共识,推动达成稳定中美核战略关系的协议、条约等法律性承诺,从而构建稳定中美核战略关系的政治框架。在结构层面,中国无需谋求与美国对等的核力量。统筹考虑军事效用和政治效果,构筑包括核实力、核威慑决心和核威慑信息传递的完备核威慑战略,确保处于弱势的中国拥有对美国进行核反击造成美不可承受损失的能力,是实现中美核战略稳定的关键。     

Regime type versus patronal politics: a comparison of “ardent democrats” in Kazakhstan and Kyrgyzstan

Kazakhstan is home to the longest serving ruler in post-Soviet Eurasia while Kyrgyzstan is among the region’s most competitive polities. Do these regime differences correspond to divergence in political attitudes, as an extensive body of literature posits? Are Kyrgyzstanis more likely to strongly support democratic ideals? Are Kazakhstanis less likely? Contrary to expectations, data reveal the two populations to be attitudinally indistinguishable when it comes to strong support for practices associated with democracy. Whatever country differences we find are minor or statistically insignificant. We explain this convergence by shifting focus away from the political features that distinguish the two nascent democracy versus consolidated authoritarianism to those that they hold in common. Notwithstanding major constitutional reform in Kyrgyzstan in 2010, politics there, as in Kazakhstan, remains fundamentally patronal, or patronage- based. Mass attitudes, we argue, align in many ways with the countries’ shared patronal politics, rather than with their contrasting regime types.