Roadside detection of impairment under the influence of ketamine--evaluation of ketamine impairment symptoms with reference to its concentration in oral fluid and urine

Although there are many roadside testing devices available for the screening of abused drugs, none of them can be used for the detection of ketamine, a popular abused drug in Hong Kong. In connection to local drug driving legislation, effective roadside detection of ketamine in suspected drug-impaired drivers has to be established. According to the drug evaluation and classification program (DEC), ketamine is classified in the phencyclidine (PCP) category. However, no study has been performed regarding the signs and symptoms exhibited by users under the influence of ketamine. In a study to develop a protocol for effective roadside detection of drug-impaired drivers, 62 volunteers exiting from discos were assessed using field impairment tests (FIT) that included measurements of three vital signs (i.e. body temperature, pulse rate and blood pressure), three eye examinations [pupil size, lack of convergence (LOC) and horizontal gaze nystagmus (HGN)] and four divided attention tests (Romberg, one-leg stand, finger-to-nose and walk-and-turn tests). Subsequent laboratory analysis of oral fluid and urine samples from the participants revealed the presence of common abused drugs in both the urine and oral fluid samples of 55 subjects. The remaining 7 subjects with no drug in their oral fluid samples were used as drug-free subjects. In addition, 10 volunteers from the laboratory who were regarded as drug-free subjects were also assessed using the same FIT. Among the 62 volunteers, 39 of them were detected with ketamine in their oral fluid. Of these ketamine users, 21 of them (54%) with only ketamine found in their oral fluid samples while the rest (18 subjects) of them had other drugs (i.e. MA, MDMA, benzodiazepines and/or THC) in addition to ketamine. Of the 21 ketamine-only users, 15 of them (71%) were successfully identified by FIT. It was found that when salivary ketamine concentrations were greater than 300 ng/mL, signs of impairment became evident, with over 90% detection rate using the FIT. By comparing the FIT observations on the 21 ketamine-only users with the drug-free subjects, the typical signs and symptoms observable for subjects under the influence of ketamine included LOC, HGN, elevated pulse rate and in general, failing the divided attention tests, especially the walk-and-turn and one-leg stand.     

The Privatisation of Prisoner Transfer Services in Western Australia. What Can we Learn from the Ward Case?

In 2008, Aboriginal elder Mr Ward died of heat stroke while being transported in the back of a prison van operated by private security company GSL (now G4S). This article will address the role accountability mechanisms can play in improving correctional and custodial services and whether existing oversight frameworks can provide a proper supervision and quality control of private security operators. It will focus on the key reports issued by Western Australia's Inspector of Custodial Services, the independent office to oversee the prisoner transfer system. Another central source of information will be an examination of the report and recommendations handed down by the Western Australian Coroner Alastair Hope in June 2009. The Hope Report details the numerous failings of the system which led to the Ward tragedy. Both GSL and the Western Australian state government had breached a duty of care to Mr Ward. Further, it remains highly problematical having a range of oversight bodies if elected government is able to simply ignore the subsequent advice. Parliament must therefore remain a central part of the system of political accountability.     

Increasing Turnout: A Compelling Case?

Recently several thinkers have endorsed compulsion or other measures to increase turnout and revitalise democracy. This article argues that such measures are misguided, because lower turnout (even if unequal across social groups) is not necessarily undemocratic – indeed, it may serve democratic values by, for example, making it more likely that decisions really are made by the relevant constituency, with those most affected getting more say. Encouraging others to vote, or even to turn out, runs the risk of distorting electoral outcomes. If there is no clear democratic case for compulsion, then we should not risk even small limits on individual liberty.     

Tacticians,Stewards, and Professionals: The Politics of Publishing Select Committee Legal Advice

At Westminster, there are increasing pressures on select committees to publish in‐house legal advice. We suggest that examining the process of deciding to publish provides useful insights into the provision, reception, and use of legal advice, and the dynamics of select committees generally. We argue that the autonomy of select committees to decide what use they make of evidence and advice they receive is, in practice, constrained by the intra‐institutional dynamics and practices of select committees. Committee actors – parliamentarians, clerks, and parliamentary lawyers – each have overlapping, sometimes competing, roles. Most of the time, these roles and the responsibilities they encompass coincide, but the prospect of publication reveals clear tensions between the different actors. This is the politics of publication: the tactical approach of politicians is in tension with the stewardship of clerks and the professional norms of parliamentary lawyers. We suggest this tension will only increase in the near future.     

P300测谎的新取向

现在,P300是研究者使用的最多也是研究的最深入的一种脑电指标。根据实验模式的不同,目前的P300研究可以分为两大类：模拟犯罪模式和自传性信息模式。而目前P300研究的取向则集中在三个方面：一个是关于反测谎对P300的影响;一个则探讨撒谎动机或意向对P300的影响;还有一些研究则集中在将P300与其他脑电指标结合测谎上。如今,P300测谎的实验室研究已经颇有成效,但仍有生态效度不足的缺点。今后P300测谎研究应该以实际生活中的真实犯罪案件或普通人的过失行为为主,提高实验的生态效度及应用性。