对利用计算机图像处理技术伪变造文件的检验

在计算机图像处理技术用于文件检验工作的同时,也被一些犯罪分子所利用。文章阐述了利用计算机图像处理技术伪变造文件的手段、特点及对其进行检验的方法,以期对该类文件的检验工作有所裨益。     

图像真实性鉴别方法研究

在侦查实践中,对伪造照片的检验已日益在侦查活动中占据着举足轻重的作用。科学技术的发展,各种图像处理软件的开发,使伪造、变造照片成为可能,从而为犯罪分子提供了可乘之机。因此,掌握正确的照片真伪的鉴别方法迫在眉睫。伪造、变造的照片的检验是根据成像原理等一般性原理得出的方法,具体包括一般检验、用光检验、透视原理检验、景深原理检验等方法。     

Food Scandal Intolerable

正On July 20,the public was appalled as a disturbing scene aired over the nightly TV news broadcast and on the Internet Workers reprocessing long-expired meat into products at Shanghai Husi Food Co.Ltd.,owned by the U.S.-based OSI Group,were caught redhanded by undercover reporters.It was later revealed that the company had forged production dates on at least4,300 cases of smoked beef patties.The dates were altered to January 2014 from May 2013.Among them,more than 3,000     

再现被毁车辆号码中的加热效应

本文说明在显现被毁车辆号码过程中给车辆发动机加热有助于更好地实现显现目的,并通过对摩托车发动机试样的加热显现实验总结出利用加热效应加速显现且取得较好效果的操作方法.     

纸张信息在文件检验工作中的应用

纸张信息在文件检验工作中可用于对文件制成时间的判定,人为老化文件的识别,擦刮文件、消退文件、添改文件、拼补文件的识别,并可作为笔迹检验中同一认定的辅助工具。     

Validation of image stream hashing: A forensic method for content verification

How do forensic examiners know if they have altered an image stream when converting a digital image from one codec or file container to another for analysis? Forensic standards and best practices recommend avoiding alteration or degradation of multimedia data during transcoding. An image stream hashing method was recently introduced to the forensic science community to answer the question above. This paper offers an initial validation study of image stream hashing method that may answer the question above. The first half of the study's experiments tested the image stream hashing method to measure fitness for use in forensic science while identifying errors and limitations. The study's second phase analyzed the systematic errors detected in initial tests to discover error causation. Causation analysis identified four method limitations subsequently used to develop proposed standard controls of method operations. The final study phase repeated the initial experiments used in the first phase while implementing the proposed standard controls of method operations. Initial test results indicated the method had significant error rates, limiting the effectiveness of the method to only three of the five file types used in the study. The final testing phase revealed that implementing proposed standard controls of method operations reduced the potential systematic errors to a negligible level when using the image stream hashing method for content verification. The validation study concluded that examiners could use the image stream hashing method for forensic science only by implementing error mitigation techniques that utilize the proposed standard controls of method operations.     

突发公共卫生事件的劳动法治理：方式、原理与法律规则

新冠肺炎疫情防控措施的实施可能致使劳动关系的履行发生障碍,劳动者不能提供劳动给付或 者用人单位无法受领劳动给付。劳动给付在疫情防控措施实施期间以无需履行、继续履行、无法履行三种形式 存在。研究认为,劳动法应当对接突发事件应对的相关法律,通过假期、变更履行、风险负担等方式对接疫情 防控措施,建立健全多元化的综合应急治理机制。假期适用于隔离治疗、法定隔离措施、延长的春节假期等情 形,其法理基础是无需履行,劳动法应设置防疫隔离假,建立防疫隔离假的补偿机制。变更履行分为全部继续 履行和部分继续履行。全部继续履行适用于居家自我隔离、交通管制、限制人员流动、停课等疫情防控措施, 全部继续履行的法理基础是一时不能履行,劳动法应建立补充履行的法律规则。部分继续履行适用于用人单位 受疫情影响而经营困难的情形,其法理基础是难以履行,劳动法应完善集体协商制度,并在失业保险中建立缩 短工时工资补贴制度。风险负担适用于停工,其法理基础是永久不能履行,劳动法应完善停工期间的法律规则, 建立停工期的社会补偿机制。     

"周先生诉北京交管局案"引发的思考

地方法规违反上位法律的现象层出不穷,严重影响了我国法律体系的建设和相对人权益的保护;行政诉讼领域对行政行为司法审查相关规定的不完善,导致相对人权益在行政诉讼胜诉后仍得不到救济甚至遭受更严厉的侵犯;北京市交管局依据的地方法规违反了上位法律而被法院判决行政行为违法,却做出更不利于原告的变更处罚,显然失当。