Classification algorithm using halftone features of counterfeit bills and CNN

With recent advancements in image processing and printing technology, home printers have improved in performance and grown more widespread. As such, they have been increasingly used in counterfeiting and forgery. Most counterfeit bills in Korea have been created using home scanners and printers. The identification of printer model is thus necessary to rapidly track down criminals and solve crimes. Household printers can be largely divided into inkjet and laser printers. These two types of printers print halftone textures instead of continuous images. This study proposed a technique of printer classification based on halftone textures that can be observed in printed documents. Since halftone textures are expressed as periodic lattices, the images were transformed via FFT, which is highly effective at expressing periodicity. ResNet, known for its superior gradient flow, was used for training. The experiment was conducted on 12 color laser jets and 2 inkjets. Scans of bills printed by each printer were used, and halftone texture analysis was performed on these images for printer model classification. Each image was cropped into several parts; one of the cropped parts was analyzed. The analysis showed that laser printers could be 100% distinguished from inkjet printers. An accuracy of 98.44% was achieved in make classification. When 50 cropped images were used instead of a single image, the technique achieved 100% accuracy in model classification. The proposed technique is non-destructive; it offers high accessibility and efficiency as it can be performed using a scanner alone, without requiring additional optical equipment.     

Examining the Links Between General Strain and Control Theories: an Investigation of Delinquency in South Korea

In modifying general strain theory (GST), Agnew has accepted the control-related variables as conditioning variables to moderate or mediate the casual process through strain into delinquency. In this regard, this study aims to empirically and theoretically address the void of connecting traditional and redefined self-control variables to GST. To explore this issue, the current study employed data derived from the Korea Children and Youth Panel Study (KCYPS). Specifically, three waves (2012, 2013, and 2014) were used to test hypotheses from GST and control theories. Both trait-based low self-control and revised self-control partially mediated the relationship between strain and delinquency. However, only redefined self-control significantly interacted with strain in producing delinquency. The current research reveals the possible integration of redefined control theory and GST.

     

Climate Change and a Just Transition to the Future of Work

Rapidly growing concerns about the adverse effects of climate change are prompting a re-thinking of how companies view their strategies and operations and spurring legal and regulatory responses around the world. The overarching objective of these efforts is to facilitate and accelerate the transition to a more sustainable economy. The green transition will have substantial distributional and structural implications for workers and the workplace across companies and economic sectors. Indeed, the future of work will be significantly shaped by climate change. However, relatively scant scholarly attention has been devoted to the forward-looking legal implications of climate change for work. Similarly, legal scholars writing on climate change have largely neglected the laws governing employment. This article seeks to help fill that gap. How can companies, workers, and society respond to the green transition in a manner that enables better jobs, a safe and stable workplace, and more resilient companies? To answer this question, this article draws on the theory of just transition, which is rooted in environmental justice and labor rights. We offer an interpretation and application of just transition that expands its scope to serve as a blueprint for ethical business conduct and legal reform to improve the world of work and the lives of workers.     

司法政策与监管政策的竞争——基于信用卡纠纷裁判的观察

政策对司法裁判产生实然的影响,当司法政策与监管政策发生竞争时,作为裁判者的地方法院面临选择困境。信用卡民事纠纷实证研究表明,法院对"费率限定"的司法政策与"费率约定"监管政策的认同基本抗衡并受到政策解释路径的影响。改进政策在技术层面的适用,应发挥抽象规则的威慑力,关注政策可能的不利后果,加强个案裁判说理论证。而从根本上化解政策竞争,需要建立司法权与监管权协调机制。一方面,加强职能履行过程的协调,适用法律对政策竞争予以解释,运用消极司法审查发挥个案裁判灵活性;另一方面,加强政策制定程序的协调,横向上明确规范性文件征求意见程序,纵向上完善规范性文件备案审查程序,从而超越政策竞争,实现协同治理。     

大数据技术表征的方法论特征

大数据技术表征的过程彰显了广义语境性与再语境性、解构性与建构性、相关性与因果性、预测性与实时性的辩证统一。即结构与意义的辩证统一,新范式与旧范式的辩证统一,数据"发声"与人的主观创造性的辩证统一,历时性与共时性的辩证统一。为促进大数据发展,必须培养辩证思维能力,充分挖掘社会对大数据技术的个化性需求,加快创新型人才队伍建设,充分发挥人的主观创造性,培养大数据文化。     

大学生"村官"的"角色社会化"研究

作为国家宏观政策鼓励下的结果,大学生"村官"群体已经成为我国农村中一个独特的群体.身份和生活世界的巨大变化是这个群体的典型特征.如何适应新的生活环境和角色身份,是他们必须面对的"角色社会化"过程.本文以在两个专业网站上收集到的28份大学生"村官"的自述作为研究材料,通过自我身份认同、和农民的心理距离、价值实现度三个向度,来探讨他们在这种强烈反差下的"角色社会化"过程.     

Asphyxial games in children and adolescents

Asphyxial games, as played by young adolescents, and going by various names, are not new phenomena. What seems to be different at present is an increase in lethality introduced by the increasing use of ligatures and "playing" the game alone. The authors present a properly certified but insufficiently appreciated case followed 2 years later by 2 closely spaced but unrelated deaths in young adolescent males that made known this practice in New Hampshire youth. Other cases presented to the author from other jurisdictions are reviewed in aggregate. Presented are characteristics of victims of this practice that may help distinguish these deaths from suicidal asphyxia. A relative paucity of literature regarding asphyxial games outside the realm of autoerotic asphyxia gives rise to certification difficulties given the high prevalence of youth suicide.     

Fatal neurotoxic response to neuroleptic medications: case report and review of the literature

Neuroleptic malignant syndrome (NMS) is a diagnosis of exclusion difficult to make due to a lack of pathognomonic features. Diagnosing NMS by postmortem examination becomes increasingly challenging when possible underlying brain pathology is obscured. The diagnosis is based on clinical history and laboratory findings. Autopsy and histologic findings, if any, usually are reflective of hyperthermia or complications (eg, aspiration pneumonia) of NMS. The authors describe a case of a 36-year-old Hispanic woman with a presumptive diagnosis of pseudoseizures, treated with various combinations of neuroleptic medications over a 6-week period prior to her sudden, unexpected, in-hospital death. Neuroleptic malignant syndrome is likely to have contributed to this patient's death. Confounding factors and medicolegal issues of a postmortem diagnosis of NMS are discussed.     

英语学习自主性与教师角色探讨

在当今提倡“交际教学法”和强调以“学生为中心”的外语语言教学理论和教学法领域里,“自主性学习”已逐渐成为一项“热门话题”。自主性学习强调学生控制管理自我学习过程,对自我学习负责。教师在培养学生英语学习自主性中扮演着重要角色。教师应转变传统观念,从课堂内课堂外两方面帮助学生提高独立学习的能力,为学生的终身学习打下良好的基础。