Search Results (11)

Background/Objectives: Conduct Disorder (CD) involves persistent behavior violating societal norms and others’ rights. A subgroup of adolescents with CD exhibits callous–unemotional (CU) traits, which are linked to severe antisocial behavior and poorer long-term outcomes. Research suggests parenting plays an important role in the development of CU traits. However, few studies have explored the role of maternal and paternal parenting practices mediating the link between CU traits and violence within the same study. Methods: This study included 222 adolescents with Conduct Disorder (M_age = 15.7, 68% male) and examined whether perceived parental warmth and hostility, measured using the Quality of Parental Relationships, mediated the association between callous–unemotional (CU) traits and youth involvement in violent crime and gun violence, assessed via the Violent Crime Assessment and Gun Violence Questionnaire. Results: Double mediation models showed that only maternal hostility mediated the link between CU traits and violence, while maternal warmth and paternal parenting practices did not. Conclusions: Findings emphasize the role of maternal hostility in exacerbating violence, including gun violence, among adolescents with CD and CU traits. Full article

To address the COVID-19 pandemic, as with other infectious diseases, a key intervention is vaccination. Health communications are thus of vital importance for informing the public on the benefits and risks of vaccines. This in turn makes the readability of media content fundamental. Previous studies of COVID-19-related information have found the readability of online information considerably more difficult than recommended. However, studies on the readability of information related to COVID-19 vaccination in Asian contexts have yet to be carried out. Furthermore, especially in the case of the current pandemic, health information is communicated by a variety of information channels, including the internet and mass media. This paper investigates the readability of textual information on COVID-19 vaccination found online and in newspaper articles in parts of Asia where English is one of the main languages, namely Singapore, Hong Kong, and the Philippines. Readability was assessed using a set of readability tests (Flesch–Kincaid Reading Ease, Flesch–Kincaid Grade Level, Gunning Fog Index, Coleman–Liau Index, and Simple Measure of Gobbledygook Grade level). It was found that a low proportion of URLs scored within recommended readability thresholds, and did so consistently across locations and types of sources. Furthermore, a relatively low proportion of web searches returned information from local sources; most URLs linked to sources outside of Singapore, Hong Kong, or the Philippines. Further, local online and newspaper sources scored similarly poorly on readability on average compared to non-local sources. Understanding of fast-evolving health communications concerning COVID-19 vaccination encompasses information about vaccine development and deployment from other locations, as well as locally. Nevertheless, these findings indicated a fairly low proportion of local sources among the top search results, and relatively low (i.e., difficult-to-read) readability scores for top search results and for local newspapers. An important issue for health communications strategies addressing COVID-19 vaccination will therefore be to consider different types of media sources in order to achieve the right mix of local and non-local sources while also ensuring appropriate readability. Full article

This work is a contribution to the development and implementation of non-thermal plasma technology for decontamination in the perspective of nosocomial and chronic wound innovative therapies. Multi jets devices based on Plasma Gun^® technology in static and scanning operation modes and bacterial lawns inoculated with resistant and non-resistant bacterial strains were designed and used. A pilot toxicity study exploring plasma treatment of wound bearing patients, performed with a low voltage plasma applicator, is documented as a first step for the translation of in vitro experiments to clinical care. Bacterial inactivation was demonstrated for Staphylococcus aureus, Pseudomonas aeruginosa and drug resistant S. aureus, P. aeruginosa and Escherichia Coli strains collected from patient wounds at Orleans (France) hospital. A few square centimeter large contaminated samples were inactivated following a single plasma exposure as short as one minute. Samples inoculated with a single but also a mix of three resistant pathogens were successfully inactivated not only right after their contamination but for mature lawns as well. Similar bactericidal action was demonstrated for antibiotic-resistant and non-resistant P. aeruginosa. The time exposure dependent increase of the inhibition spots, following multi jets exposure, is discussed as either the accumulation of reactive species or the likely combinatory action of both the reactive species and transient electric field delivery on inoculated samples. Full article

The continuous increases in the numbers of road traffic crashes (RTC) over the years, especially in developing countries, have been a source of worry. The majority of the RTC are attributed to road user behaviours exhibited by the drivers. This study sets out to investigate the road user attitudes and behaviours in Abuja, Nigeria. A total of 1526 questionnaires were distributed, of which 321 questionnaires were completed and returned. The questionnaires tried to understand four major road user behaviours, namely use of seatbelts, drink driving, use of mobile phone while driving, and use of child restraints. The results after analysing the questionnaires showed that the majority of the road users in Abuja showed high non-compliance with the use of seatbelts, either when driving or when being driven. About 64% of the respondents admitted to not using seatbelts. Results from the cross-tabulation process showed that the high non-compliance to seatbelt usage was statistically associated with young, single road users. Around one-third of Abuja road users admitted to drink driving. Road users who were married engaged in more frequent drink driving than road users who were single, and the association was statistically significant. A high percentage of Abuja road users admitted to using mobile phones while driving and 55.8% of the total respondents admitted to not using child restraints while driving. A lack of child restraints was statistically associated more with male road users than female road users. It is recommended that stricter enforcement of road safety laws should be undertaken and that the government should provide road safety agents with the right equipment (e.g., speed guns, breathalyzers) that would aid road safety agents to perform their duties effectively in order to curb the excessive bad road user behaviours in Abuja. Full article

In the framework of the ITER (International Thermonuclear Experimental Reactor) project, one of the key components of the reactor is the ECRH (Electron Cyclotron Resonance Heating). This system has the duty to heat the plasma inside the tokamak, using high frequency and power radio waves, produced by sets of 1MW gyrotrons. One of the main issues related to the gyrotron operation is the output power drop that happens right after the beginning of a pulse. In this work, we study the underlying phenomena that cause the power drop, focusing on the gyrotron’s MIG (Magnetron Injection Gun) of the 1MW, 170 GHz European Gyrotron prototype for ITER. It is shown how the current emission and the temperature of the emitter are tightly bound, and how their interaction causes the power drop, observed experimentally. Furthermore, a simple yet effective lumped-parameter model to describe the MIG’s cathode thermal dynamics is developed, which is able to predict the power output of the gyrotron by simulating the propagation of the heat inside this component. The model is validated against test results, showing a good capability to reproduce the measured behavior of the system, while still being open to further improvements. Full article

This article centers Black religious women’s activist memoirs, including Mamie Till Mobley’s Death of Innocence: The Story of the Hate Crime that Changed America (2003) and Rep. Lucia Kay McBath’s Standing Our Ground: The Triumph of Faith over Gun Violence: A Mother’s Story (2018), to refocus the narrative of American Evangelicalism and politics around Black women’s authoritative narratives of religious experience, expression, mourning, and activism. These memoirs document personal transformation that surrounds racial violence against these Black women’s Black sons, Emmett Till (1941–1955) and Jordan Davis (1995–2012). Their religious orientations and experiences serve to chart their pursuit of meaning and mission in the face of American brutality. Centering religious experiences spotlights a tradition of Black religious women who view their Christian salvation as authorizing an ongoing personal relationship with God. Such relationships entail God’s ongoing communication with these Christian believers through signs, dreams, visions, and “chance” encounters with other people that they must interpret while relying on their knowledge of scripture. A focus on religious experience in the narratives of activist Black women helps to make significant their human conditions—the contexts that produce their co-constitutive expressions of religious and racial awakenings as they encounter anti-Black violence. In the memoirs of Till and McBath, their sons’ murders produce questions about the place of God in the midst of (Black) suffering and their intuitive pursuit of God’s mission for them to lead the way in redressing racial injustice. Full article

Maximal ball velocity is a significant performance indicator in many sports, such as baseball. Doppler radar guns are widely assumed to underestimate velocity. Accuracy increases as the cosine angle between the radar gun and the object decreases. The purpose of this study was to investigate the impact of player handedness and the location of the radar gun on the accuracy of ball velocity. Throws were analyzed in four conditions: the radar gun on the right side, throwing with the right arm, then with the left arm; and the radar gun on the left side, throwing with the right arm, then with the left arm. The Cronbach’s alpha for all four conditions showed α-values above 0.97; however, a paired t-test indicated significant differences between the 3D motion analysis and the radar gun. Bland–Altman plots show a high degree of scatter in all conditions. Results suggest that the radar gun measurements can be highly inconsistent when compared to 3D motion analysis. Full article

We describe experiments and simulations of dynamical merging with two Taylor state plasmas in a Swarthmore Spheromak Experiment (SSX) device. Taylor states are formed by magnetized plasma guns at opposite ends of the device. We performed experiments with Taylor states of both senses of magnetic helicity (right-handed twist or left-handed twist). We present results of both counter-helicity merging (one side left-handed, the other right-handed) and co-helicity merging (both sides left-handed). Experiments show significant ion heating, consistent with magnetic reconnection. We suggest that the merged, warm state could be a suitable target for future magneto-inertial fusion experiments. Magnetohydrodynamic simulations of these experiments reveal the structure of the final relaxed, merged state. Full article

I analyze attitudes towards gun control from a recent survey of American high school students. For students who most closely identify as Republicans, cueing them to think about prior school shootings increases their agreement that armed staff in schools will improve safety and arming citizens will reduce risk of mass shootings. For those identifying as Democrats and Independents, providing them with selective information that certain states have loose gun control laws and low rates of gun violence makes them more supportive of gun rights. For Republicans, providing selective information that certain states have loose gun control laws and high rates of gun violence makes them less supportive of gun rights. These results suggest that emotional cues may exacerbate a priori biases, while informational cues may be more likely to change people’s minds about firearm policies. Full article

Baseball and softball pitch types are distinguished by the path and speed of the ball which, in turn, are determined by the angular velocity of the ball and the velocity of the ball center at the instant of release from the pitcher’s hand. While radar guns and video-based motion capture (mocap) resolve ball speed, they provide little information about how the angular velocity of the ball and the velocity of the ball center develop and change during the throwing motion. Moreover, mocap requires measurements in a controlled lab environment and by a skilled technician. This study addresses these shortcomings by introducing a highly miniaturized, wireless inertial measurement unit (IMU) that is embedded in both baseballs and softballs. The resulting “ball-embedded” sensor resolves ball dynamics right on the field of play. Experimental results from ten pitches, five thrown by one softball pitcher and five by one baseball pitcher, demonstrate that this sensor technology can deduce the magnitude and direction of the ball’s velocity at release to within 4.6% of measurements made using standard mocap. Moreover, the IMU directly measures the angular velocity of the ball, which further enables the analysis of different pitch types. Full article

Given the volatile nature of animal rights issues and the extensive array of writings on the topic, one might expect several introductory anthologies to be available. The only anthologies in print, however, are scholarly tomes (listed below) geared towards more advanced readers. Fortunately, Lauri S. Friedman, author of dozens of anthologies on controversial topics such as gun control, national security, terrorism, fast food, sexually transmitted diseases, and many other topics, fills this void well with her volume titled Introducing Issues with Opposing Viewpoints: Animal Rights. She has included articles by influential authors in a diverse range of lay outlets such as The Wall Street Journal, Slate, Guardian, Christianity Today, Food & Wine, among others. Below, I describe the contents of the book, its strengths and weaknesses, and how educators might use the book in classroom settings. Full article