Reliable Gait Recognition Using 3D Reconstructions and Random Forests – An Anthropometric Approach

Photogrammetric measurements of bodily dimensions and analysis of gait patterns in CCTV are important tools in forensic investigations but accurate extraction of the measurements are challenging. This study tested whether manual annotation of the joint centers on 3D reconstructions could provide reliable recognition. Sixteen participants performed normal walking where 3D reconstructions were obtained continually. Segment lengths and kinematics from the extremities were manually extracted by eight expert observers. The results showed that all the participants were recognized, assuming the same expert annotated the data. Recognition based on data annotated by different experts was less reliable achieving 72.6% correct recognitions as some parameters were heavily affected by interobserver variability. This study verified that 3D reconstructions are feasible for forensic gait analysis as an improved alternative to conventional CCTV. However, further studies are needed to account for the use of different clothing, field conditions, etc.     

All in the Family? Family Environment Factors in Sibling Violence

Sibling violence is presumed to be the most common form of family violence and the least studied. Based on data from “Physical Violence in American Families, 1976,” this paper assesses the family environment factors associated with sibling physical violence. Of a range of potential family influences, measures of family disorganization were the most significant predictors of sibling violence, overriding the characteristics of children or particular family demands. What mattered most to the occurrence of sibling violence was a child’s actual experience of physical violence at the hands of a parent, maternal disciplinary practices and whether husbands lose their temper. These findings point to the deleterious effect of corporal punishment, and suggest sibling violence in families is associated with more ominous family and gender dynamics.

Interpersonal problem-solving skills in battered,counseling, and control women

The present study was designed to examine the interpersonal problem-solving skills of battered women, while controlling for the effects of depression and anxiety. Battered, Counseling, and Control women were administered an interpersonal problem-solving inventory and asked to generate as many behavioral options as possible for each problem and then to select the one option they would chose to use in the given situation. All options were rated for effectiveness by two “blind” raters. Subjects were also administered the BETA intelligence test, the Beck Depression Inventory, and the State-Trait Anxiety Inventory Form-Y. Analysis of variance found no significant differences between the groups for intelligence, but the Counseling women were significantly more depressed and anxious than the Battered or Control women. Analysis of covariance (using BDI and STAI scores as covariates) found that Battered women: (1) generated fewer total options, (2) generated fewer effective options, and (3) chose fewer effective options for use in the situation than both Counseling and Control women. These findings provide indirect support for a general problem-solving skills deficit in battered women and reinforce the importance of problem-solving skills training for battered women.     

Cumulating the Intellectual Gold of Case Study Research

Two criticisms of public administration research have been leveled. First, knowledge in the field is not being cumulated. Second, the research has low quality. A preference for case studies as a form of scientific inquiry is behind both criticisms. The authors propose a solution to the first problem by showing how meta-analysis can be used to cumulate knowledge using case study evidence. Viewed cumulatively, case studies comprise an intellectual goldmine awaiting discovery. The authors challenge the second criticism, proposing that quality judgments should be based on the important principle of knowledge cumulation, which acknowledges the value of all research methods.     

Automated extraction of DNA from reference samples from various types of biological materials on the Qiagen BioRobot EZ1 Workstation

We have validated and implemented a protocol for DNA extraction from various types of biological materials using a Qiagen BioRobot EZ1 Workstation. The sample materials included whole blood, blood from deceased, buccal cells on Omni swabs and FTA Cards, blood on FTA Cards and cotton swabs, and muscle biopsies. The DNA extraction was validated according to EN/ISO 17025 for the STR kits AmpF?STR^® Identifiler^® and AmpF?STR^® Yfiler^® (Applied Biosystems). Of 298 samples extracted, 11 (4%) did not yield acceptable results. In conclusion, we have demonstrated that extraction of DNA from various types of biological material can be performed quickly and without the use of hazardous chemicals, and that the DNA may be successfully STR typed according to the requirements of forensic genetic investigations accredited according to EN/ISO 17025.     

Shopping cart injuries, entrapment, and childhood fatality

Shopping carts may be associated with a variety of injuries, particularly in toddlers and young children. These usually relate to falls from carts or to tip-overs. Injuries that are sustained include hematomas/contusions, abrasions, lacerations, fractures, and fingertip amputations. Fatal episodes are uncommon and are usually due to blunt craniocerebral trauma from falls. A case involving a 19-month-old girl is reported who became entrapped when she inserted her head through the side frame of a cart that had been removed from a supermarket and left at her home address. Death was caused by neck compression. Although rare, the potential for lethal entrapment during unsupervised play means that the presence of stray shopping carts at private residences and in public places, including playgrounds and parks, is of concern. Strategies, such as coin deposits, should be encouraged to assist in the return of such carts to supermarkets.     

The Nordic governments' responses to the Covid-19 pandemic: A comparative study of variation in governance arrangements and regulatory instruments

Government responses to the Covid-19 pandemic in the Nordic states—Denmark, Finland, Iceland, Norway, and Sweden—exhibit similarities and differences. This article investigates the extent to which crisis policymaking diverges from normal policymaking within the Nordic countries and whether variations between the countries are associated with the role of expertise and the level of politicization. Government responses are analyzed in terms of governance arrangements and regulatory instruments. Findings demonstrate some deviation from normal policymaking within and considerable variation between the Nordic countries, as Denmark, Finland, and to some extent Norway exhibit similar patterns with hierarchical command and control governance arrangements, while Iceland, in some instances, resembles the case of Sweden, which has made use of network-based governance. The article shows that the higher the influence of experts, the more likely it is that the governance arrangement will be network-based.     

Distributed leadership and performance-related employee outcomes in public sector organizations

Distributed leadership is the sharing of leadership tasks between managers and employees. This article demonstrates how a distributed leadership perspective adds to the public administration literature by including an important sensitivity to planned and nonplanned leadership. We propose a theoretical model that explains the impact of distributed leadership on employee outcomes which have a direct or indirect impact on organizational performance in public organizations contingent on alignment with individual leadership capacity and organizational goals. Our empirical analysis in the Danish hospital sector shows initial support for the expected relationships between distributed leadership and performance-related employee outcomes such as job satisfaction and innovative behavior. This indicates that the distributed leadership perspective holds the potential to strengthen service delivery in complex public service organizations while there is weaker support for the notion that the positive impact of distributed leadership depends on individual leadership capacity and their support for organizational goals.     

Parental Differential Treatment of Siblings and Adolescents’ Health-Related Behaviors: The Moderating Role of Personality

Youth who receive comparatively poorer parental treatment than a sibling are at risk for maladaptive behaviors in a variety of domains, but research has yet to examine links with adolescents’ health-related behaviors nor consider how those links may vary based on adolescents’ personality traits, namely conscientiousness and agreeableness. Two siblings (n?=?590 adolescents; 53% female; M_age?=?15.86, SD?=?1.73) from 295 families reported on their differential conflict and closeness with their fathers and mothers as well as on their personality, sleep habits, exercise habits, and general health habits. Multilevel modeling revealed that, generally, the less conscientious adolescents had better health habits when they had comparatively warmer relationships with their mothers. Less conscientiousness adolescents may be less distressed by inequality in the family, and thus may experience positive effects of relatively better treatment.

     

Populism and Connectivism: An Analysis of the Sanders and Trump Nomination Campaigns

This paper is an analysis of the Trump and Sanders’ campaigns for the presidential nomination of their respective parties. It studies the structure of the relationship between the campaign and its supporters through communication on each candidate’s Facebook page. While both campaigns have been termed populist, we differentiate populism from connectivism and develop an account of a connective campaign as a species of connective action. Whereas populism is predicated on a singular people, connectivity involves the acceptance and recognition of difference as a resource for political activity. Whereas populism involves a hierarchical authority relationship, connectivity is based on a reciprocal authority relationship. Finally, populism articulates an anti-establishment demand while connective campaigns demand for citizens to have the capacity for consequential engagement with political life. The empirical results demonstrate that connectivism and populism are distinct in practice and that these attributes hang together as two separate concepts. Further, we find that Trump’s campaign communications emphasize populist themes, for Sanders such themes are limited and in the shadow of connectivism.