Dynamic pressure measurement of cartridge operated vole captive bolt devices

IntroductionVole captive bolt devices are powder actuated spring guns that are used as a pest control mean. After having triggered the explosion of the blank cartridge by touching a metal ring around the muzzle, the vole is killed by the massive propulsion of the gas jet. Improper use and recklessness while handling these devices may cause severe injuries with the hand of the operator at particular risk. Currently, there are no experimental investigations on the ballistic background of these devices.MethodsAn experimental test set-up was designed for measurement of the firing pressure and the dynamic force of the gas jet of a vole captive bolt device. Therefore, a vole captive bolt device was prepared with a pressure take-off channel and a piezoelectric transducer for measurement of the firing pressure. For measurement of the dynamic impact force of the gas jet an annular quartz force sensor was installed on a test bench. Each three simultaneous measurements of the cartridges’ firing pressure and the dynamic force of the blast wave were taken at various distances between muzzle and load washer.ResultsThe maximum gas pressure in the explosion chamber was up to 1100 bar. The shot development over time showed a typical gas pressure curve. Flow velocity of the gas jet was up to 2000 m/s. The maximum impact force of the gas jet at the target showed a strong inverse ratio to the muzzle's distance and was up to 11,500 N for the contact shot distance. Energy density of the gas jet for the close contact shot was far beyond the energy density required for skin penetration.ConclusionThe unique design features (short tube between cartridge mouth and muzzle and narrow diameter of the muzzle) of these gadgets are responsible for the high firing pressure, velocity and force of the gas jet. These findings explain the trauma mechanics of the extensive tissue damage observed in accidental shots of these devices.     

SoTE: Strategy of Triple-E on solving Trojan defense in Cyber-crime cases

Cyber activity has become an essential part of the general public's everyday life. The hacking threats of Cyber-crime are becoming more sophisticated as internet communication services are more popular. To further confirm the final finding of Cyber-crime, this study proposes three analytical tools to clarify the Cyber-crime issues by means of Ideal Log, M-N model and MDFA (Multi-faceted Digital Forensics Analysis) strategy, where Ideal Log is identified as a traceable element of digital evidence including four elements of IP Address, Timestamp, Digital Action, and Response Message. M-N model applies a formal method for collating and analyzing data sets of investigation-relevant logs in view of connected time with ISP logs. MDFA strategy attempts to outline the basic elements of Cyber-crime using new procedural investigative steps, and combining universal types of evidential information in terms of Evidence, Scene, Victim, and Suspect. After researchers figure out what has happened in Cyber-crime events, it will be easier to communicate with offenders, victims or related people. SoTE (Strategy of Triple-E) is discussed to observe Cyber-crime from the viewpoints of Education, Enforcement and Engineering. That approach is further analyzed from the fields of criminology, investigation and forensics. Each field has its different focus in dealing with diverse topics, such as: the policy of 6W1H (What, Which, When, Where, Who, Why, and How) questions, the procedure of MDFA strategy, the process of ideal Logs and M-N model. In addition, the case study and proposed suggestion of this paper are presented to counter Cyber-crime.     

Vital animal predation of the genital region caused by a mongrel dog

A 79-year-old man, who was in a helpless situation due to cardiac decompensation, suffered dog bite injuries on the left thigh and in the genital region while still alive. Two extensive soft-tissue defects with contused and bruised wound edges were surrounded by multiple slit-like skin lesions. The outer genitals were almost completely missing. Because of surgical emergency treatment, molecular biological investigations were no longer possible. Therefore, the cause of the bite injuries had to be determined solely on the basis of the documented morphology of the wounds.     

Access to medicine in an era of fractal inequality

This article evaluates the legitimacy and degree of inevitability of unequal access to medicine. The author introduces 'fractal inequality' to the access issue by using the term to describe skewed patterns in distributions of income and wealth that lead to reallocative effects of higher spending on health care by the wealthiest that can cascade down the distributive ladder. 'Fractal inequality' is transposed to the U.S. health care sector to explain the trend away from medical need toward ability to pay. The author cautions U.S. policymakers to consider international access problems instead of exacerbating those issues when domestic access to care policies is debated in a vacuum. The author also analyzes some policy proposals designed to reduce inequities in the global trade of medicine.     

Medical negligence in drug associated deaths

According to epidemiological studies adverse drug events are one of the most frequently encountered complications during medical treatment, a leading cause of hospitalisation and frequent cause of death. However, medical malpractice claims due to medication errors seem to be relatively rare. Based on a retrospective multicentre study on medical malpractice cases with lethal outcome (n = 4450), drug related cases (n = 575) were further evaluated. In 50% of cases a causal connection between drug therapy and death could be ruled out already after autopsy. In 232 cases a causal connection between drug therapy and death could be approved (drug allergies, relative overdose, wrong application, mix-up of drugs and sepsis after injection abscess). However, within the legal context only in 70 cases a medication error was approved which was in 42 cases causal for death, in 28 not. Administration of contraindicated drugs, incorrect application and relative overdose in renal insufficiency are the prevalent mistakes. Concerning the frequency of ADE in epidemiological studies medication errors are underreported in all data sources on medical malpractice; this seems to be due to the fact that even doctors and attending physicians rarely recognize an ADE; furthermore approving the connection between drug effect and death is extremely difficult for the expert witness.     

The impact of employee perception on the successful institutionalisation and implementation of performance management systems in developing countries: The perspective from Ghana's public service

Performance management (PM) has become a key instrument in the quest to ensure optimal operations by organisations in the public sector. Some scholars, though, believe that PM has failed because of employees' negative perception and management's exclusion of employees from its development. Studies on the relationship between employee perception of PM and its effectiveness in the public sector are limited. We argue that management must value employee perception more highly than they do at present because it is unlikely employees would be willing to take an active part in implementing a change with which they disagree or that they see as having no value. This study examines the effect of employees' perception on the institutionalisation and implementation of PM in developing countries, with specific reference to Ghana.     

Employee engagement and task performance in state‐owned enterprises in developing countries: The case study of the power sector in Ghana

A growing number of studies prove a relationship between employee engagement (EE) and performance. Unfortunately, almost all originate in the developed world; the few that look at developing countries, including their public sectors, have focused more on the civil service and agencies, and neglect state‐owned enterprises (SOEs), despite their importance for delivery of public services. The purpose of this paper is to examine the impact of EE on task performance in SOEs in developing countries, with particular reference to Ghana. We purposively selected SOEs in the power sector and quantitatively surveyed their employees. We employed regression analysis to examine the link between EE and employee task performance. Our study, like those before it, shows that EE has a positive and significant effect on employee task performance. Our findings further suggest that for SOEs to achieve their targets with employees' performance, appropriate strategies should be adopted to ensure that employees are highly engaged.     

Administering the Inherited ‘Employment Miracle’: The Labour Market Policy of the Second Merkel Government

Contrary to most other OECD countries, the German labour market remained almost unaffected by the consequences of the global financial crisis and experienced a strong and steady recovery. Thus, after their victory in the elections of 2009, the economic conditions for the bourgeois parties to shape labour market policy according to their preferences were rather favourable. After exploring the causes of the German ‘employment miracle’, this article summarises the relevant labour market policies introduced by the black–yellow coalition. We argue that, apart from some important exceptions, the second Merkel government did not pursue a decidedly market–liberal policy agenda. Instead, primarily due to the low problem load, the government mainly readjusted some of the existing policy instruments. Therefore, German labour market policy between 2009 and 2013 can rather be described as an administration of the inherited ‘employment miracle’ than an active pursuit of a discrete policy agenda.     

Trajectories of Anxiety During Elementary-school Years and the Prediction of High School Noncompletion

Previous research has provided mixed results regarding the effect of anxiety on academic achievement. Building on this body of research, the present longitudinal study pursued two goals. The first goal was to describe trajectories of anxiety during elementary-school years. The second goal was to determine the predictive value of these trajectories on high school noncompletion after controlling for personal (i.e., gender, classroom behaviors, and academic achievement) and familial (i.e., sociofamilial adversity) characteristics. A community sample of 1,817 children (887 boys, 930 girls) participated in this study. Results showed that anxiety tended to fluctuate from kindergarten to Grade 6 for different groups of children. Furthermore, the result of a logistic regression analysis indicated that group membership for anxiety predicted high school noncompletion by age 20. As a whole, these findings suggest that considering heterogeneous developmental patterns of anxiety during elementary-school years appears quite useful for predicting an important outcome such as high school noncompletion.