Experimental forensic scenes for the characterization of ground-penetrating radar wave response

Over the last few decades, the use of non-intrusive geophysical techniques, which allows for coverage of an entire crime scene in a reasonable amount of time, in forensic investigation has increased. In this study, we analyze the effectiveness of ground-penetrating radar (GPR) in forensics. Experimental scenes were simulated and some of the most commonly buried items in actual crime scenes were introduced, such as bone remains, guns and drug caches. Later, a GPR survey was conducted on the experimental grids with a 500 MHz antenna. The final purpose was to characterize the radar wave response expected for each set of remains to assist with its identification in later actual investigations. The results collected provided promising information that can be used when surveying real cases. Nevertheless, there were some interpretational difficulties regarding the sizes of the items and the electromagnetic properties of the materials. For these cases, finite-difference time-domain modeling was employed to achieve an advanced interpretation of the field data. The simulated models used were built from accurate geometric data provided by photogrammetric methods, which replicate the experimental scenes in fine detail. Furthermore, this approach allowed for the simulation of more realistic models, and the synthetic data obtained provided valuable information for assisting in the interpretation of field data. As a result of this work, it was concluded that GPR can be an effective tool when searching for a variety of materials during a crime scene investigation.     

解放战争时期党内请示报告制度的历史考察

解放战争时期,中共中央和毛泽东从加强党的建设着手,建立了党内请示报告制度,并对该制度作了具体详细规定。党内请示报告制度的建立对加强当时党的建设尤其是党的组织建设起到了重要作用,巩固和发展了党的民主集中制,转变了党的干部作风,提高了干部的政策水平和领导能力,为解放战争最后胜利起到了重要作用。党内请示报告制度对当前树立党中央的权威,保证政令畅通和党的集中统一领导具有十分重要的现实意义。     

我国非公有制企业工资集体协商前瞻

改革开放三十年来,随着我国经济体制改革逐步深入,企业工资收入分配制度改革不断推进,建立了按劳分配为主体、多种分配方式并存的分配制度,     

Managing an on-the-spot lottery in reentry services

Objectives

Describe the authors?? experiences in designing and conducting a randomized field experiment of a community-based, reentry program for ex-offenders.

Methods

Two surveys: one with reentry clients not involved in our outcome evaluation, and a follow-up survey of participants who underwent randomization in order to participate in the outcome study. Qualitative input from program staff and clients were also recorded, supplemented with observations of the authors.

Results

Having a research staff member located at the program site proved to be a key advantage for monitoring frustrations voiced by program staff and prospective clients, thereby allowing for the modification of the selection procedures over time to minimize resistance. Ultimately, the simplest approach proved to be the most acceptable. The importance of certain procedural justice themes were suggested by the survey results and the observed acceptability of our on-the-spot lottery approach to randomization.

Conclusions

The survey results (and our onsite experiences) provided unequivocal evidence that randomization was unpopular, but that resistance can be partially mitigated by adhering to basic principles of procedural justice.     

跨国追逃中遣返法律困境及其应对措施研究

外逃人员潜逃国外时往往也会违反目的地国的移民法或者因为在我国的犯罪行为而不符合入境条件面临被遣返的问题。非法移民遣返作为一种引渡替代措施在跨国追逃中发挥着重要作用,但其遣返措施也面临着一些困难,如外逃人员可能会利用难民申请、遣返前风险评估等行政或司法救济手段逃避遣返。此外,遣返中我国还面临中外法律制度的差异导致的证据效力不足、量刑承诺的法律依据不足、遣返目的地不确定等问题。对此,我们应该积极配合有关国家向其提供外逃人员的犯罪证据、申请国际刑警组织发布红色通报、宣布外逃人员护照作废、综合运用跨国追逃追赃措施,以促成外逃人员依法被遣返回国。     

青年互联网事件认知及其社会观念的实证研究

互联网事件是考察网民观念的最好视角.本文以"大学生与网络事件"为研究对象,通过调查与量化分析,描述了青年对网络事件的认知与态度,揭示了网民及其网络社会观念的矛盾性与复杂性,并指出多元化思想的误读对构建正确的社会观念具有消极影响.     

发挥我国农产品在对外贸易中的复合比较优势

近年来,国内学术界出现了关于比较优势和竞争优势的论争。争论的焦点是我国的对外贸易是应以比较优势还是以竞争优势为基础。通过对我国农产品比较优势的实证分析得出结论:我国农产品正逐渐丧失其比较优势。要增强我国农产品在国际市场上的竞争力,关键是要从增强其内生比较优势入手,发挥其复合比较优势。     

天津民進有“五老“(三)

学富五车的著名教育家、图书馆学家黄钰生 　　1974年,中共天津市委统战部举行的一次各界爱国人士思想改造经验交流会上,一位精神矍铄、步伐矫健的儒雅老人以<风景这边独好>为题,向大会做了真诚感人的思想汇报,汇报中引用毛主席“风景这边独好“的词句表达自己对新中国的看法,引用了晋人陶渊明的“觉今是两昨非“的诗句表达了对自己旧思想意识的认识,引用了宋人韩琪的一联诗句“莫嫌老圃秋容淡,且看黄花晚节香“表达自己对老年的态度,赢得与会者的热烈掌声,表示欢迎和敬意.……