A real-time agro-food authentication and supervision system on a novel code for improving traceability credibility

Counterfeiting products and abusing labels lead to less credibility for traceability system in China recently. Authentication and supervision agencies driven by government departments play an important role for ensuring the quality safety in the case of lacking the willingness and credit of enterprises. A complete authentication and supervision flow framework was constructed based on an identification code (IdC) for authenticated origin base, which linked two actors of the agencies and the enterprises, and three subsystems of On-line Authentication Subsystem (OAS), Safety Production Management Client (SMC) and Mobile Supervision Application (MSA). IdC consisted of longitude and latitude of origin base as position code, production code and authentication type code. With a relative position partition method on 6 zones every 27° for China map and a coordination transformation algorithm, an absolute longitude and latitude value was converted into a relative position value and a zone mark value. IdC and packaging date code formed initial traceability code (TC). 8 digits packaging date code was reconstructed into 3 digits relative time value and 1 digit period mark according to a relative time period partition method with a period of 999d as time intervals and four periods form a cycle. Validation code was generated integrating the zone mark value, period mark value and authentication type code. Therefore, transformed 20 digits TC with the characters of shorter code length and stronger encryption was formed with IdC, relative time value and validation code. Three subsystems for different actors which provide the main function such as origin base registration, agency authentication, QR code generation, data uploading and product verification, were developed. The system has been used in Tianjin city from 2012. 213 enterprises were audited through OAS and used SMC. Through investigating 8 supervision agency staffs, 30 origin base owners, and 50 customers, it is shown that the positive effects are approved by most of the investigators and two negative effects for enhancing the costs and doubting the authentication reliability are laid by 17 enterprises and 12 customers. Furthermore, 4 typical cases for counterfeiting and abusing the labels were exampled and can be solved to a certain extent with the system. However, except for the technology itself, a management measures fitting the supervision flow and system need to draft in order to improve the system application well in the future.     

基于异步时钟机群监测系统的设计与实现

机群监测系统是用来管理机群，方便用户使用机群的软件系统．针对当前已有的机群管理系统在时效性、健壮性等方面的不足，提出了一种基于异步时钟的服务器监测技术，通过把指定的服务器集合组成一个具有反馈机制的环形队列的方法，使得用户能够将机群作为一个整体来进行管理．该系统能够透明地加入和删除服务器节点，自动重新配置以达到高可用性，本文采用的线程池技术和I／O多路转换技术能够有效提高机群监测系统的反应时间．实际的测试结果证明，该系统能够根据传输延迟、丢包率、系统繁忙程度、服务器或网络故障等情况采取适当的对策，在短时间内发现和排除故障，可以较好地应用于邮件服务器、WEB服务器等事务性机群处理系统中．     

面向APT攻击的网络安全威胁隐蔽目标识别方法

针对当前网络APT隐蔽目标攻击识别方法准确率低、攻击识别耗时长的问题,提出面向APT攻击的网络安全威胁隐蔽目标识别方法.引入关联规则算法构建隐蔽目标识别模型,据此构建APT攻击隐蔽目标识别的总体框架,根据APT目标档案属性相关性计算网络安全威胁之间的关联规则,根据关联规则提取APT目标档案数据,通过可信度计算实现APT攻击下的网络安全威胁隐蔽目标识别.仿真实验表明,所提方法具有较高的攻击识别准确率,且攻击识别耗时短,能够高效、准确地实现APT攻击下网络安全威胁隐蔽目标识别.     

诚实信用原则与会计信息失真的法律思考

诚实信用原则为民法"帝王"原则,它要求民事主体在从事民事活动中遵守诚实信用原则.而会计信息失真为会计行业当前重大问题,造成会计信息失真的根本原因则是会计从业人员对诚实信用原则的丧失.本文试从法学角度探析会计学领域的重大突出问题,并力图找出解决之办法.     

Managing job seekers' organizational image beliefs: The role of media richness and media credibility.

In this article, the authors assessed job seekers' organizational image beliefs before and after they experienced 3 recruitment media. The authors examined whether perceptions of media richness and credibility were related to improvements in the correspondence between job seekers' image beliefs and firms' projected images. Both media richness and credibility perceptions were associated with correspondence between job seekers' image beliefs and firms' projected images. However, results revealed that richness and credibility perceptions were likely to enhance job seekers' initial beliefs about firms' images when their beliefs were positive but did not diminish job seekers' beliefs about firms' images when their initial impressions were too positive. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

基于主观Bayes方法对Web使用挖掘的研究

为了更加合理地组织Web服务器的结构,使用户能及时快速地浏览到自己所需的网页信息,借鉴专家系统的不确定性推理方法——主观Bayes方法,提出了网页链接的可信度思想,并给出了网页链接的可信度因子模型。该模型可以定期、定时地根据Internet用户浏览的Web日志记录,动态地改善Web服务器的结构,从而实现基于用户浏览兴趣的网页链接结构的改进。     

基于交互记忆系统的知识整合研究

目的考查团队内部基于交互记忆系统的知识整合问题,探索团队内部交互记忆系统及其专长性维度、可信性维度、协调性维度与知识整合的关系。方法采用问卷调查的方法。对176个团队样本进行调查。结果在团队中,交互记忆系统及其三个维度与知识整合存在显著正相关关系,其中可信性维度对知识整合的影响最大。结论在团队中,交互记忆系统能够促进知识整合,并且其专长性、可信性、协调性维度均能对知识整合产生不同正向影响,其中,可信性维度对知识整合的正向影响最大。     

ON THE CONNECTION BETWEEN THE COMPLEXITY AND CREDIBILITY OF INFERRED MODELS

Abstract

The connection between the simplicity of scientific theories and the credence attributed to their predictions seems to permeate the practice of scientific discovery. When a scientist succeeds in explaining a set of nobservations using a model Mof complexity c then it is generally believed that the likelihood of finding another explanatory model with similar complexity but leading to opposite predictions decreases with increasing nand decreasing c. This paper derives formal relationships between n, c and the probability of ambiguous predictions by examining three modeling languages under binary classification tasks: perceptrons, Boolean formulae, and Boolean networks. Bounds are also derived for the probability of error associated with the policy of accepting only models of complexity not exceeding c. Human tendency to regard the simpler as the more trustworthy is given a qualified justification.     

基于传感器特征可信度的多信息融合模态研究

信息融合关键在于如何控制信息的数量,处理各种信息之间的关系以及优先级别。提出一种基于信息特征可信度的信息融合方法运用于信息融合的模态构建之中。通过预先优化信息特征的可信度进行信息的一次融合,再通过多信息模态中的特征关联进行信息的二次融合。找到最佳的多信息的模态构建方法,提高信息融合的质量和可信度。     

The effects of complexity on jurors' verdicts and construction of evidence.

One hundred twenty mock jurors heard 1 of several versions of a civil trial. The tort trial was either high or low in information load and contained evidence that either clearly favored the plaintiffs or was ambiguous. Expert witnesses testified in either technical or less technical language. Verdicts favored the plaintiffs when the evidence was clear and was presented in technical language because technical language enhanced witnesses' credibility when the evidence was clear. Although high information loads and technical language hindered evidence processing, jurors endeavored to comprehend, as indicated by the recall of more facts and alternative constructions of the evidence when that evidence was ambiguous. However, those constructions were of poorer quality, incorporating evidence of lesser probative value. (PsycINFO Database Record (c) 2010 APA, all rights reserved)