Lecture Versus Simulation: Testing the Long-Term Effects

Abstract

Active learning techniques are being use with increasing frequency in the classroom and more time is being dedicated to designing and implementing them. However, the literature still suffers from a lack of rigorous empirical methods to test the effects of simulations. Most of the claimed benefits of utilizing simulations, and other active learning techniques, are improved soft skills and higher order thinking like empathy, confidence, public-speaking abilities, and interpersonal skills—all of which don’t lend themselves well to scientific measurement. This gap in the literature is especially troubling considering that time spent using simulations is time not spent using other methods. This article seeks to test the differing impacts of simulations versus traditional lectures over the long-term using a simple 30-minute simulation and rigorous experimental methods. The most important results show that students learn more initially from a lecture, but that students who were exposed to the simulation were better able to retain that information over the long-term.     

性别歧视的人口后果——基于公共政策视角的模拟分析

性别歧视导致的“失踪女孩”现象对中国人口发展产生了影响。从制度、文化、经济和政策4个方面分析了中国性别歧视的成因,并结合中国政府采取的有助于降低性别歧视的公共政策,提出了相应的政策体系。根据人口模拟模型,对建议的公共政策效果进行了模拟,定量分析了不同性别歧视程度对中国人口发展的影响。结果表明,性别歧视减少了人口总量和劳动适龄人口总数,加快了人口老化程度,加剧了婚姻市场的挤压。通过性别歧视下人口发展模拟的结果,为降低男孩偏好、消除性别歧视提供经验支持,为政府制定和执行相应的公共政策提供依据。     

Simulation-based reconstruction of traffic incidents from moving vehicle mono-camera

Video recordings from digital cameras implemented in road vehicles present a valuable source of data concerning various dangerous traffic situations, i.e., road accidents or near-miss incidents. This data is readily available and numerous methods for forensic reconstruction of traffic situations from vehicle video were presented in the past. New alternative method for reconstruction of traffic situations from vehicle video is presented in this article. The method is based on the fusion of kinetic vehicle trajectory simulation within 3D laser scanner point cloud, projective geometry, and processing of video footage from moving vehicle camera. The method offers accurate reconstruction of general vehicle motion within relevant time domain whereby in-depth technical information about traffic incident can be quantitatively extracted from video footage. The result is physics-based 3D projection of simulated vehicle motion on the motion of real vehicle recorded by moving monocular camera. The method was validated within performed experimental test runs with respect to vehicle speed, distance travelled, acceleration/deceleration and directional quantities (yaw rate, yaw angle). The method was further applied in the reconstruction of real-world traffic events.     

网络空间草根政治运动及其公共治理

网络空间草根政治运动是草根力量以维护其利益为目的,运用网络技术组织的抗争性集体行动。草根政治运动在网络空间兴起是社会转型时期贫富分化的结果,也是网络时代权力重新分配的结果。它的表现形式主要有网络政治动员、网络舆论批评监督、网络政治参与,它有利于国家-市场-社会关系的优化,也有利于国家治理的发展,同时也可能给政治秩序稳定带来极大的难题。因此,对网络空间草根政治治理必须坚持整体性治理原则,引导与规制并举,现实政治与虚拟空间治理并重,使网络空间草根政治运动成为社会主义民主政治的重要建设性力量而非颠覆性力量。     

SELECTIVE INCAPACITATION,THREE STRIKES,AND THE PROBLEM OF AGING PRISON POPULATIONS: USING SIMULATION MODELING TO SEE THE FUTURE*

Research Summary: The growth of prison populations over the last three decades is a great source of concern for policy makers and observers. One mechanism by which this growth occurs is via sentencing reforms that extend length of stay for certain categories of offenders. This has the effect of aging prison populations, which is problematic for many reasons. Apart from the increased financial burdens entailed in caring for older prisoners, it is also important to consider the intent of reforms in evaluating them. Of late, sentencing reform has become increasingly focused on the selective incapacitation of dangerous offenders. Policies that have the effect of aging the prison population are problematic from this perspective due to the diminishing returns realized with respect to incapacitation as offenders age. Dynamic systems simulation analysis is employed to investigate the likely consequences of recent sentencing reforms that increase length of stay for some offenders. These analyses indicate that the effects of recent reforms may not be as dramatic as some observers have predicted, but they suggest that the consideration of alternatives to incarceration for elderly offenders is warranted from the standpoint of cost considerations as well as that of selective incapacitation. Policy Implications: The results indicate that California's Three Strikes law will not accelerate the rate of growth of the elderly prison population. However, even without increasing the proportional representation of elderly prisoners, the number of elderly prisoners is expected to grow substantially over the next three decades. These prisoners will strain criminal justice system resources while presenting little public safety threat. State criminal justice policy makers and their constituents should closely examine laws that impose very long stays without discretionary release, as these statutes may contribute to the production of elderly prisoners. This problem is particularly pronounced in Three Strikes and other habitual offender laws that use retrospective methods to identify habitual offenders. Additionally, the effects of reforms lengthening stay for some offenders must be considered in light of cumulative effects of sentencing reform resulting in changes to the demographic structure of the prison population overall. Dynamic systems simulation modeling is presented as a valuable policy‐making tool, as it allows the policy analyst to examine the potential impacts of laws in the absence of data suitable for conventional statistical analyses.     

开展实战模拟教学的思考

实战模拟教学,是指学生在实战模拟中完成相关教学任务,以提高自身分析及解决问题的综合能力的重要教学方式。在公安教育大改革背景下,此教学模式的实际问题亟待认真思考和解决,教学模块式的教管法亟待研究推广和拓展。     

e-Youth before its judges - Legal protection of minors in cyberspace

The present paper¹ aims both at introducing the legal aspects of the protection of minors in cyberspace and analysing and criticizing certain main features embedded in this legal approach of young people protection. After a short introduction underlining the concept of child’s rights and the reason why this right has been particularly proclaimed in the context of the cyberspace, the first section describes the new technological features of the ICT environment and linked to this evolution the increasing risks the minors are confronted with. A typology of cyber abuses is proposed on the basis of these considerations. A list of EU or Council of Europe texts directly or indirectly related to the minors’ protection into the cyberspace is provided. The second section intends to analyse certain characteristics of the legal approach as regards the ways by which that protection is conceived and effectively ensured. Different principles and methods might be considered as keywords summarizing the legal approach and to a certain extent, fixing a partition of responsibilities taking fully into account the diversity of actors might be deduced from the different regulatory documents.The third section comes back to the different complementary means by which the Law is envisaging the minors’ protection. The obligation to create awareness about the potential risks minors might incur definitively is the first one. The omnipresent reference in all the legal texts to the role of self-regulatory interventions constitutes another pillar of the protection envisaged by the Law. After having described the multiple instruments developed in the context of this self-regulation (labels, codes of conduct, hotlines, ODR…) or even co-regulation, the paper examines the conditions set by the European legislators as regards these instruments. Technology might be considered as a fourth method for protecting children. Our concern will be to see how the Law is addressing new requirements as regards the technological solutions and their implementation. The present debates about the liability of the actors involved in applications or services targeted or not vis-à-vis the minors like SNS or VSP operators are evoked. As a final point the question of the increasing competences of LEA and the reinforcement of the criminal provisions in order to fight cyber abuses against minors will be debated. In conclusion, we will address final recommendations about the way by which it would be possible to reconcile effective minors’ protection and liberties into the cyberspace.     

‘Customary internet-ional law’: Creating a body of customary law for cyberspace. Part 1: Developing rules for transitioning custom into law

The shift in socio-economic transactions from realspace to cyberspace through the emergence of electronic communications and digital formats has led to a disjuncture between the law and practices relating to electronic transactions. The speed at which information technology has developed require a faster, more reactive and automatic response from the law that is not currently met by the existing law-making framework. This paper suggests the development of special rules to enable Internet custom to form legal norms to fulfill this objective.     

侦查讯问训练教学中存在的几个问题

侦查讯问训练教学作为侦查讯问教学的重要组成部分,是目前公安院校专业教学的重要内容之一。然而,其在教学实践中却存在着与理论教学不协调、选取的案例不典型、模拟讯问不能贴近公安实战、忽视对讯问笔录制作的指导等问题。这不仅影响了教学的效果,还背离了课程设置的初衷。因此,有必要引起我们足够的重视。     

网络协议教学中NS仿真实验平台的应用

仿真是分析和评估复杂通信网络的有效方法之一,通过介绍NS的工作原理和仿真过程,提出一种基于定量统计建模方法的网络仿真实验平台,用于辅助网络协议教学、协议优化测试等工作的开展,并通过详细的实例演示了实验平台的运行效果。