Uncovering deterministic causal structures: a Boolean approach

While standard procedures of causal reasoning as procedures analyzing causal Bayesian networks are custom-built for (non-deterministic) probabilistic structures, this paper introduces a Boolean procedure that uncovers deterministic causal structures. Contrary to existing Boolean methodologies, the procedure advanced here successfully analyzes structures of arbitrary complexity. It roughly involves three parts: first, deterministic dependencies are identified in the data; second, these dependencies are suitably minimalized in order to eliminate redundancies; and third, one or—in case of ambiguities—more than one causal structure is assigned to the minimalized deterministic dependencies.     

用耗散结构理论浅析妇科肿瘤的发生机制

根据耗散结构理论说明机体和细胞都具有耗散结构,从机体与外界环境的关系,细胞与机体的关系两个层次阐明了妇科肿瘤的病因和发病机制。以全新的思维方式为妇科肿瘤的研究提供了方法论的指导,具有很大的启迪和借鉴作用。     

论管仲学派生态伦理思想的层次结构

管仲学派把天、地、人看作是一个以"道"为根据和调节机制的有机系统,认为天地人遵循着共同的基本生存法则,由此阐述了以"人与天调"、"天人相因"为基础的生态存在论。《管子》一书以"道为物要"的价值观为总依据,把自然现象道德化,根据人类道德与自然万物的内在依存关系,提出"德润万物"的生态伦理命题;揭示了自然现象的属性与人的能力品质的一致性,主张入世行为要遵循以"人与天调"、"德润万物"、"时之处事"为中心的伦理原则,并提出了取用有度的生态伦理规范,即合理利用,开发有度;依时禁放,顺天应人;宽猛并济,令行禁止;多管齐下,综合治理。管仲学派的生态伦理思想与其政治思想是紧密结合的,直接服务于治国安邦、发展经济和满足民众需求,它开创了中国生态伦理思想史的先河。     

Checking for Systematic Value Preferences Using the Method of Triads

Value preferences have long been central to research in political science and psychology. Despite their well‐established theoretical importance, however, their measurement is still an open question. Early research on values relied heavily on ranking instruments for data collection, but more recent work calls this measurement technique into question. Specifically, it is argued that traditional ranking instruments are (1) too long, (2) too complex, and (3) may force respondents to make ad hoc differentiations between values of similar importance, behind which there is no systematic preference. As a result, the reliability of the measure is called into question, and measurement error remains a concern. In this article, we discuss the method of triads—a technique used to gather rankings data that affords the researcher the opportunity to assess the extent to which random error affects preference rankings. Using the method of triads to collect preference data on five values central to American political culture, we find that Americans' value preferences are clearly structured and driven by systematic preferences, even when psychological theory suggests they may not. We also compare the predictive validity of the data collected with the method of triads against that of the data collected with traditional importance ratings. We show that models of ideology, party identification, presidential approval, and vote‐choice fit to “triads” data explain more variance than models fit to ratings data.     

Values Voters: The Conditional Effect of Income on the Relationship Between Core Values and Political Attitudes and Behavior

The postmaterialism thesis contends that newer cultural and social justice issues will supplant traditional, class‐based economic concerns as societies become increasingly wealthy. Although macrolevel evidence broadly supports this prediction, individual‐level evidence for the theory in the United States has been sparse. Moreover, alternative theories predict that postmaterialism will not travel well to the American context because religious cleavages that divide the major parties will be most salient. We test the postmaterialism thesis at the individual level using unique data that enable us to evaluate citizens' value‐preference structures across income levels, as well as the conditional effect of income on the relationship between individuals' ranked value preferences and political attitudes and behavior. Consistent with the theory, greater income strengthens the association between egalitarianism and ideology, partisanship, evaluations of President Obama, and presidential vote choice, and weakens the relationship between moral traditionalism and these same variables. However, income does not moderate the association between economic security and individuals' identities, evaluations, or behavior. Additionally, value‐preference hierarchies are quite similar across income groups after controlling for partisanship and ideology. The results lend insight into the nature of value‐ and income‐based cleavages in American politics.     

谱聚类算法在不同属性层级结构诊断评估中的应用

聚类分析已成功用于认知诊断评估(CDA)中,使用广泛的聚类分析方法为K-means算法,有研究已证明K-means在CDA中具有较好的聚类效果。而谱聚类算法通常比K-means分类效果更佳,本研究将谱聚类算法引进CDA,探讨了属性层级结构、属性个数、样本量和失误率对该方法的影响。研究发现：（1）谱聚类算法要比K-means提供更好的聚类结果,尤其在实验条件较苛刻时,谱聚类算法更加稳健;（2）线型结构聚类效果最好,收敛型和发散型相近,独立型结构表现较差;（3）属性个数和失误率增加后,聚类效果会下降;（4）样本量增加后,聚类效果有所提升,但K-means方法有时会有反向结果出现。     

Searching for a (Post)Foundational Approach to Philosophy of Science: Part I

This paper represents an attempt to articulate the basic principles of a hermeneutic philosophy of science. Throughout, the author is at pains to show that both (i) overcoming epistemological foundationalism and (ii) insisting on the multiplicity, patchiness, and heterogeneity of the discursive practices of scientific research do not imply a farewell to an analysis of the constitution of science's autonomous cognitive structure. Such an analysis operates in two directions: “continuous weakening” of epistemological foundationalism and “hermeneutic grounding” of a cognitive structure. Carrying out the analysis in both directions leads to a (post) foundational picture of science. The main thrust of the first part of the paper is to outline the tenets of a constitutional analysis of scientific research. This part focuses especially on the notion of “unified narrativestructures” which refers to the “effective histories” of the main epistemic types of science. This revised version was published online in August 2006 with corrections to the Cover Date.     

Thermal expansion of icosahedral Al-Pd-Mn and decagonal Al-Cu-Co quasicrystals

Thermal expansion measurements have been performed by X-ray diffractometry on icosahedral Al-Pd-Mn (i-(Al-Pd-Mn)) in the temperature range between 10 and 700K and on decagonal Al-Cu-Co (d-(Al-Cu-Co)) in the range between 100 and 750K. The linear thermal expansion coefficient alpha(T) of i-(Al-Pd-Mn) is about half of that for the pure aluminium phase at room temperature and does not show a negative thermal expansion at low temperatures. The degree of anisotropy in the thermal expansion of d-(Al-Cu-Co) is small; the ratio of the average alpha between the tenfold periodic direction and a quasiperiodic direction perpendicular to it is 0:93 +/- 0:05. The Gruneisen parameter gamma(T) has been evaluated from the measured alpha(T). gamma for d-(Al-CuCo) is almost isotropic, similar to alpha. The gamma values for the two phases lie in the range between 1.5 and 1.8, which are comparable with those for conventional metallic crystals. They are almost constant over the temperature range studied.