和谐社会视角下的公安机关网络舆情预警工作研究

舆情预警是公安机关正确决策、化解矛盾、维护稳定的重要前提。改进舆情监测工作,健全网络舆情预警机制,是构建社会主义和谐社会的必然要求。网络舆情预警机制是一个系统工程,公安部门需要做好舆情规划、舆情收集、分析处理、舆情预警四个环节的工作,把网络舆情信息汇集分析作为重点,同时利用先进技术作为保障。对于公安新闻的处理,公安机关可通过互联网平台与网民直接沟通来解决。     

不同手机及不同通信网络通话录音质量评析

目的为送检手机通话录音质量的审查提供理论依据。方法提出一种定量化的语音检材质量评价标准,并对不同手机及不同通信网络下的录音进行质量评价。该标准基于主流鉴定设备,涵盖了声学语谱图共振峰个数及数值、基频参数、区域平均频谱等分析方法以及声纹比对测试。结果实验结果显示,不同条件下得到的通话录音质量存在一定的差异性,会对声纹图谱鉴定产生一定影响,但并不会造成本质性差异。结论语音同一认定中,对基于移动通信网络获取的检材录音应考虑到通话语音质量的差异性对检验的影响,并在鉴定分析中加以评估和克服。     

Mapping silent citizenship: how democratic theory hears citizens' silence and why it matters

Democratic theory hears silent citizenship as disengagement or disempowerment. Normatively, silent citizenship evokes the specter of civic passivity – of democratic citizens variably characterized by apathy, disaffection, selfishness, or a lack of political knowledge. Empirically, silent citizenship is linked to deficits of democracy – including voter turnout rates, the quality of political representation, and overall government responsiveness. One problem with these conclusions, however, is that we lack any systematic conceptualization of the range of different attitudes democratic citizens might hold in silence. This article seeks to fill in this conceptual gap by mapping the range of possible motivations for citizens to remain silent in developed liberal democratic systems. The key to doing so, I argue, is to distinguish between two measures of democratic citizenship: empowerment and communication. Separating these two measures reveals an entire spectrum of motivations for silence, which I organize into five distinct degrees of silent citizenship.     

Voices of minor children heard and unheard in judicial divorce proceedings in the Netherlands

Under Dutch divorce law, children in theory have ample opportunity to make their voices heard: the petition for divorce must state how the children have been involved in preparing a parenting plan; all children aged 12 or 16 (depending on the context) or older have the right to be heard by the judge, and the judge may additionally hear younger children; the court may appoint a guardian ad litem to represent the interests of the child; and the child has the right to seek informal access to the court (by letter or telephone, for example) which may lead to an ex officio decision that changes the arrangements agreed by the parents in a divorce settlement or an earlier judicial decision. In practice, however, there is no guarantee that children's voices will actually be heard in divorce proceedings. Notably in the case of separation after an informal relationship (other than marriage or registered partnership) the opportunities given to children to be heard are often a dead letter.     

Development of an instrument for assessing the quality of forensic evidence and expert testimony from three feature-comparison methods: DNA,voice, and fingerprint analysis

In a context of rising violence and long-lasting impunity, in 2008, Mexico's criminal justice system underwent a radical change from an inquisitorial model to an adversarial one, to make it more effective, transparent, and expeditious. The new system tasked judges with publicly determining the admissibility of forensic evidence, as well as assessing its technical quality and probative value—tasks for which they currently receive little to no training. With the aim of contributing to the consolidation of the adversarial model, a comparative framework—in the form of a checklist—of the analysis of fingerprints, DNA samples, and voice recordings was created. To do so, a review of the academic literature, published reports, and guidelines was performed. The collected data were synthesized and submitted to a panel of Mexican judges, who provided feedback on its adequacy. The framework focuses on the steps on which quality assurance of forensic evidence depends, organized in five discrete stages that span from the collection of samples at the scene of a crime to the presentation of evidence at trial, specifying the main technical criteria experts should state to allow a decision maker to examine its accuracy and reliability. Differences and commonalities among the three methods were identified, particularly in terms of how qualitative and quantitative analyses are performed in each. Besides its potential usefulness as an aid for judicial decision-making, the checklist could be a valuable resource for training programs aimed at judges, as well as quality assurance programs.     

The Landless invading the landless: participation,coercion, and agrarian social movements in the cacao lands of southern Bahia,Brazil

This contribution draws on Nancy Fraser's concept of ‘participatory parity’ to analyze the reproduction and contestation of inequalities internal to land reform settlements affiliated with the Landless Rural Workers’ Movement (MST) located in the cacao lands of southern Bahia, Brazil. These inequalities are variously manifest in unequal control over land and legal documents, disparities in status and what Fraser calls ‘voice'. These circumstances help account for quantitative evidence that shows a strong preference among local landless populations for land reform organizations that are more decentralized and less hierarchically organized. These circumstances also motivate direct actions undertaken by grassroots MST settlers seeking to destabilize the conditions that ground these inequalities. This research highlights the importance of attending to local histories and interactions through which participatory disparities are christened and reproduced; indicates potential methodological consequences; and examines the interplay of transgressive action, dialogue and recognition as settlers struggle to bring about ‘participatory parity' – or what they might call genuine ‘friendships' – in their communities.     

What does method validation look like for forensic voice comparison by a human expert?

Method validation has gained traction within forensic speech science. The community recognises the need to demonstrate that the analysis methods used are valid, but finding a way to do so has been more straightforward for some analysis methods than for others. This article addresses the issue of method validation for the Auditory Phonetic and Acoustic (AuPhA) approach to forensic voice comparison. Although it is possible to take inspiration from general regulatory guidance on method validation, it is clear that these cannot be transposed on to all forensic analysis methods with the same degree of success. Particularly with respect to an analysis method like AuPhA, and in a field of the size and characteristics of forensic speech science, a bespoke approach to method validation is required. In this article we address the discussions that have been taking place around method validation, and illustrate one possible solution to demonstrating the validity of voice comparison by a human expert using the AuPhA method. In doing so we consider the constraints placed on sole practitioners, which generally go unacknowledged.     

A voice for change? Trust relationships between ombudsmen,individuals and public service providers

There has been a debate for years about what the role of the ombudsman is. This article examines a key component of the role, to promote trust in public services and government. To be able to do this, however, an ombudsman needs to be perceived as legitimate and be trusted by a range of stakeholders, including the user. This article argues that three key relationships in a person’s complaint journey can build trust in an institution, and must therefore be understood as a system. The restorative justice framework is adapted to conceptualize this trust model as a novel approach to understanding the ombudsman institution from the perspective of its users. Taking two public sector ombudsmen as examples, the paper finds that voice and trust need to be reinforced through the relationships in a consumer journey to manage individual expectations, prevent disengagement, and thereby promote trust in the institution, in public service providers, and in government.     

声纹鉴定中普通话音素间过渡方式特征研究

不同人所讲的普通话语流中相邻音素间的过渡方式分为不同的类型。音节内辅音-元音之间、音节间元音-辅音之间的过渡方式分为清晰过渡(或停顿过渡)和模糊过渡(或缓冲过渡)两种类型;音节内元音-辅音之间的过渡方式分为间断过渡和连续过渡两种类型;音节内元音-元音之间的过渡方式分为平滑过渡、间断过渡、交错过渡和异变过渡四种类型。对同一人的发音而言,不论其相邻音素间的过渡方式属于上述哪种类型,都表现出较强的自身同一性。因此音素间的过渡方式可以作为声纹鉴定中的一类特征。     

传统录音机和数码录音笔在信道中的差异

语音是重要的法庭证据。随着科学技术的进步,各种各样的语音采集设备出现在人们的日常生活中。从传统的录音机到数字录音笔、手机、MP3,语音采集经历了由模拟信号到数字信号的转换过程。不同的采集设备和方法会造成语音的信道差异。传递语音信号的通道,如：传统录音机和数码录音笔由于各自的频率响应性能不同,对信号施加的影响也不同。传统录音机传递的是连续变化的模拟信号,数码录音笔传递的则是以有限个＂1＂和＂0＂的代码组合成为信息的数字信号,两者是现在普遍应用的两种信号模式。研究表明：信号通道对于语音识别,特别是自动语音识别的影响是明显的,但是对于图谱视觉检验的影响、影响的程度如何还尚待进一步的深入研究。