沼生花褶伞rDNA的ITS序列测定及分析

采用分子生物学手段,运用PCR技术,以rDNA的ITS区为分子指标,首次对我国沼生花褶伞的核糖体DNA中的转录间隔区(ITS)序列进行了测定.通过对沼生花褶伞和紧缩斑褶菇的ITS序列进行相似性比对和分析,序列同源性高达84.3%,从分子水平上证明它们具有较近的亲缘关系.     

高职生人际关系状况调查——以对张家口职业技术学院在校生的调查为据

通过对张家口职业技术学院在校学生的调查,了解到高职学生的人际关系状况总体良好,大部分学生人际关系和谐。但也有部分学生存在着明显的人际交往障碍。造成人际关系不良的原因有多种,需要从多方面加以改进。     

Gendered capital: emotional capital and mothers’ care work in education

This paper is concerned with the inequalities experienced by mothers in the performance of educational care work for their children. It is argued that the caring work carried out by mothers at transfer to second‐level schooling is shaped by their ability to activate the significant resource of emotional capital; a gendered resource involving emotional skills, knowledge and experiences. Drawing on an in‐depth study of mothers’ routines of care, it is suggested that the possession of emotional capital subjects mothers to a normative order of care. Moreover, in exploring the idiosyncratic differences between mothers’ capacities to activate emotional capital it is argued that the activation of this care resource is facilitated in the context of solidary relationships but also by mothers’ access to other capitals. It is concluded that in order to tackle care inequalities those working in education need to recognise the significance of emotional resources, and need to challenge traditional codes of practice and policies around ‘parental’ involvement.     

中国当代史研究的几个问题

1949年以来的中国历史属于当代史的范畴，学术界分别使用过中华人民共和国史、当代中国史、当代中国研究、中国现代史等概念。笔者认为，称为中国当代史比较恰当。当代历史是不断延伸的，为了避免当代史研究的时政性缺陷，可以考虑以2001年入世以前为相对稳定的学术范围。综合各种意见，当代史分为1949-1956年、1956-1966年、1966-1976年、1976-1989年、1989-2001年5个阶段是合理的。当代史研究具有重要价值，应该注意用现代化的标准看待当代历史进程，正确处理学术研究与贯彻党的方针、政策、决议的关系，正确处理领袖人物的评价问题，正确对待毛泽东思想，正确对待外来学术成果。应该坚持以真实为原则，以事实为基础，以材料为根据的根本学术方法。     

Creating inclusive learning communities: the role of student–faculty relationships in mitigating negative campus climate

This study examined student perceptions of their learning environments at 130 American colleges and universities. Results indicate that students of color, women students, and gay/lesbian students are the most likely to observe and experience prejudice and discrimination within and outside of their classrooms. Fortunately, the development of strong student–faculty relationships significantly mitigate negative campus climate and support the formation of inclusive learning communities. Institutional implications are discussed.     

Using Our Understanding of Families to Strengthen Family Involvement

The purpose of this article is to help teachers become more responsive to the changing needs and contexts of families in their efforts to establish relationships and encourage family participation. Through this article, the authors describe the changing landscape of parenting and the stressors experienced by contemporary families. The authors then provide a review of research that describes strategies that have been successfully employed by teachers of young children to foster increased communication and family involvement. The article concludes with suggestions to help early childhood professionals change their paradigm of parent involvement from a school-centric perspective to one that is more family-centric.     

基于社交网络的社交关系强度分类研究1）

本文利用监督学习的方法从社交网络的用户数据中分两个阶段挖掘最佳的社交关系强度分类模型,并进一步探讨不同用户数据对于社交关系强度的区分能力。研究发现,基于贝叶斯网络算法的分类模型在区分强社交关系的过程中被证明最有效,而基于 Logistic 回归算法的分类模型则在区分出临时社交关系的过程中表现最佳。研究还通过属性分析发现互动性因素总体上对社交关系强度的区分能力最为突出,相似性因素中的共同好友数也有很好的区分能力,但时间性因素对于社交关系强度的区分能力没有被发掘出来。     

Parametrization of the solvent action on modern artists' paint systems

A solvent action parametrization scheme has been developed combining relevant parameters of the solvent action on modern artists' paints to characterize the solvation and dissolving properties of different binding media. The new system combines different concepts used in solvent chemistry. It is based on the normalized and solute-dependent dimension [hδ_H + eE_T(30)cv]^N. It comprises a polarity value E_T(30)cv as the magnitude of the enthalpy, and a combined value representing the cavitation energy δ_H as an entropy-influencing factor. Forty-eight solvents were divided into five subgroups based on their interaction and structural properties. This binary scheme permits to reliably quantify spaces of efficiency. The graphical selectivity of the scheme was applied to four binding media systems (oil, alkyd, acrylic-, and acrylic-polystyrene) by determination of the swelling capacity of 48 solvents. The graphical visualization of the systematic parametrization of solvents permits one to judge the intermolecular interaction and other effects of solvation relevant to the restoration of painted artwork.     

评曹海玲的大型话剧《城市的河》

我省青年剧作家曹海玲的话剧《城市的河》,以其精巧的典型环境创造、错综复杂的人物关系、环环相扣的矛盾冲突,塑造了一个“当代阿庆嫂”式的人物形象,成为一部反映农民工生存状态的成功之作。