关于在校大学生生活满意度的实证研究——以山东省某普通高校904个样本为例

对904个大学生的问卷调查数据显示,我国大学生在校生活满意度呈正态分布;大学生自身的性格、兴趣、活动参与及创新能力均对其生活满意度产生了影响;培养大学生积极的心态,是提高大学生在校生活质量的一条重要途径。     

婚俗、法治及其路径——以海南黎族婚俗的调查为对象

现代社会,应审慎的看待法律的作用,正确处理好婚俗和法律的关系。婚俗也为人们观察法治提供了新视角,辩明法治的发展路径。     

利用尸体角膜内皮细胞活性率判定死后经过时间的研究

本研究对已知死亡时间的500只非正常死亡者的角膜内皮细胞进行染色观察，以单位面积内的活性内皮细胞与细胞总数之比作为活性率，发现角膜内皮细胞活性率（Endothelialcelllivinsrate，ECLR）随死后经过时间（postmorteminterval，PMI）的延长而逐渐降低，数理分析表明两者之间的关系为负相关，因此，认为检测尸体角膜内皮细胞活性的方法可为法医学推断死后经过时间提供一新的组织学手段。     

Detection and confirmation of fentanyls in high clay-content soil by electron ionization gas chromatography-mass spectrometry

Detection of illicit drugs in the environment, particularly in soils, often suggests the present or past location of a clandestine production center for these substances. Thus, development of efficient methods for the analysis and detection of these chemicals is of paramount importance in the field of chemical forensics. In this work, a method involving the extraction and retrospective confirmation of fentanyl, acetylfentanyl, thiofentanyl, and acetylthiofentanyl using trichloroethoxycarbonylation chemistry in a high clay-content soil is presented. The soil was spiked separately with each fentanyl at two concentrations (1 and 10 μg/g) and their extraction accomplished using ethyl acetate and aqueous NH₄OH (pH ~ 11.4) with extraction recoveries ranging from ~56% to 82% for the high-concentration (10 μg/g) samples while ranging from ~68% to 83% for the low-concentration (1 μg/g) samples. After their extraction, residues containing each fentanyl were reacted with 2,2,2-trichloroethoxycarbonyl chloride (Troc-Cl) to generate two unique and predictable products from each opioid that can be used to retrospectively confirm their presence and identity using EI-GC-MS. The method's limit of detection (MDL/LOD) for Troc-norfentanyl and Troc-noracetylfentanyl were estimated to be 29.4 and 31.8 ng/mL in the organic extracts. In addition, the method's limit of quantitation for Troc-norfentanyl and Troc-noracetylfentanyl were determined to be 88.2 and 95.5 ng/mL, respectively. Collectively, the results presented herein strengthen the use of chloroformate chemistry as an additional chemical tool to confirm the presence of these highly toxic and lethal substances in the environment.     

中国农村留守女童状况研究

目前,农村留守儿童问题已经引起了政府和社会的高度关注,但农村留守女童作为一个更加需要关注的群体,却始终没有得到足够的重视,与农村留守女童有关的各项基础信息也十分缺乏。本文利用2005年全国1%人口抽样调查数据估算了全国农村留守女童的规模、结构、地域分布等基本情况,重点阐述了农村留守女童的受教育状况、照料状况和大龄留守女童的就业状况等热点问题。本文还从性别视角出发,分别比较了留守男童和女童的各项指标。     

Ubuntu and sumak kawsay: The Inter-Parliamentary Union and the search for a global South humanist paradigm of development

The Inter-Parliamentary Union (IPU) continuously seeks to assert itself as a voice of the peoples of the world in global debates, where geopolitical interests of states, often representing political and economic elites, dominate. This article critically analyses one of the latest contributions to norm setting and idea-generation by the IPU: the concepts of ubuntu and sumak kawsay (also known as buen vivir in Spanish and living well in English) as the basis for the international response to the challenge of failed development strategies globally. This proposal from the IPU arises from the exhaustion of the dominant discourses and concepts underpinning international development. These discourses are based on the colonial model of power and are increasingly being challenged by calls from subaltern voices for ‘unthinking, rethinking and delinking’ from hegemonic illusions. Further, the article argues, the proposed ideals of ‘living well’ and ‘human solidarity’ cannot be implemented within the current colonially inspired humanist paradigm, but require a ‘decolonial’ orientation of global humanism.     

Elections and “sons of the soil” conflict dynamics in Africa and Asia

Recent research reveals that nearly one-third of ethnic civil wars since 1945 have been “sons of the soil” (SoS) conflicts that pit indigenous populations against internal migrants. Despite important differences across SoS conflicts, many share a common trait as they often escalate during elections. While scholars have examined the causal mechanisms behind electoral violence, the relationship between elections and SoS conflicts has been overlooked. By examining a wide range of cases, the article breaks with previous research that privileges in-depth case studies of SoS conflicts with high levels of violence. Using insights from recent fieldwork in Côte d'Ivoire, Ghana, and Indonesia, the article sheds light on the causal dynamics that link elections and diverging levels of SoS conflict. In so doing, it illustrates how the severing of patronage networks and the shifting balance of power towards migrants create fertile contexts for political elites to instrumentalize local grievances. Elections are thus more likely to produce violent SoS conflicts when elites (at both the national and local levels) are able to mobilize supporters by playing upon these grievances, often through the politicization of citizenship and/or the ethnicization of the local sphere.     

A Comparison of Various Fixatives for Casting Footwear Impressions in Sand at Crime Scenes

Footwear examination can provide an important link between the crime scene and the suspect. Casts have been taken from snow, soil, and sand substrates to assist with the examination and to accurately depict the impression. However, there has been some discrepancy on what kind of fixative, if any, should be used with impressions present in sand. This study tested four different fixatives on three sandy substrates. Eight gross characteristics were added to a boot sole, and thirty sand impressions were created in each substrate. Except for one control set that remained untreated, the impressions were treated with a fixative agent before casting. The ninety shoe casts were examined by a qualified footwear examiner and scored based on his ability to see the eight characteristics. The results indicated that pump‐action hairspray was the most successful on play and construction sand, while beach sand impressions without any fixative scored highest.     

High‐throughput Sequencing of Trace Quantities of Soil Provides Reproducible and Discriminative Fungal DNA Profiles

High‐throughput sequencing (HTS) offers improved resolution between forensic soil samples by characterizing individual taxa present; however, the heterogeneous distribution of taxa in soils, and limited quantity of material available, may hinder the reliability of HTS in casework. Using HTS of the internal transcribed spacer, we examined the effect of soil mass (50, 150, and 250 mg) on fungal DNA profiles, focusing on reproducibility and discriminatory power between close proximity soils, and samples with similar textural classification. The results show that reduced soil mass had no significant effect on sample differentiation and that 150 mg soil provides the most reproducible DNA profiles across different soil types. In addition, Ascomycota was identified as a robust fungal target for forensic intelligence as this phylum was detected consistently across all samples regardless of sample quantity. Overall, this study highlights the value of trace quantities of soil for use in forensic casework.     

Soils of Contrasting pH Affect the Decomposition of Buried Mammalian (Ovis aries) Skeletal Muscle Tissue

Abstract:  Little is known about the effect of edaphic conditions on the decomposition of buried mammalian tissues. To address this, we set up a replicated incubation study with three fresh soils of contrasting pH: a Podsol (acidic), a Cambisol (neutral), and a Rendzina (alkaline), in which skeletal muscle tissue (SMT) of known mass was allowed to decompose. Our results clearly demonstrated that soil type had a considerable effect on the decomposition of SMT buried in soil. Differences in the rate of decomposition were up to three times greater in the Podsol compared with the Rendzina. The rate of microbial respiration was correlated to the rate of soft tissue loss, which suggests that the decomposition of SMT is dependent on the microbial community present in the soil. Decompositional by-products caused the pH of the immediate soil environment to change, becoming more alkaline at first, before acidifying. Our results demonstrate the need for greater consideration of soil type in future taphonomic studies.