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Prior literature has investigated the connection between school shootings and factors of familial trauma and mental health. Specifically, experiences related to parental suicide, physical or sexual abuse, neglect, marital violence, or severe bullying have been associated with a propensity for carrying out a mass shooting. Given prior research has shown common histories among school shooters, it follows that a person's violent tendencies can be revealed by their previous communications with others, thus aiding in predicting an individual's proclivity for school shootings. However, previous literature found no conclusions were drawn from online posts made by the shooters prior to the mass shootings. This thesis applies NVivo-supported thematic analysis and Natural Language Processing (NLP) to study school shootings by comparing the online speech patterns of known school terrorists versus those of non-violent extremists and ordinary teenagers online. Findings indicate that out of all the possible NLP indicators, conversation, HarmVice, negative tone, and conflict are the most suitable school shootings indicators. Ordinary people score eight times higher than known school shooters and online extremists in conversation. Known shooters score more than 14 times higher in HarmVice, than in both ordinary people and online extremists. Known shooters also score higher in negative tone (1.37 times higher than ordinary people and 1.78 times higher than online extremists) and conflict (more than three times higher than ordinary people and 1.8 times higher than online extremists). The implications for domestic violence prediction and prevention can be used to protect citizens inside educational infrastructure by linking the flagged accounts to the schools or colleges that they attend. Further research is needed to determine the severity of emotional coping displayed in online posts, as well as the amount of information and frequency with which weapons and killing are discussed.

The increase of mass shootings in the U.S. has amplified news reporting on mental illness as a possible factor in the shootings despite no evidence linking the two issues. Sources used to explain mental illness in stories that explore the motivations of mass shooters affect audience perception. Through a qualitative content analysis of local newspaper coverage of five U.S. mass shootings in 2015, journalists linked mental illness as a possible motive through sources who were not qualified to treat or diagnose mental illness. Journalists also ignored professional guidance from the Associated Press on mental illness reporting in the context of mass shootings. Additionally, journalists assumed the audience was knowledgeable of mental illness in general terms and specific diagnoses. These findings indicate coverage of mass shootings includes inaccurate information about shooters' motives, and it also continues to frame mental illness as dangerous.

At present, the current 4G systems provide a universal platform for broadband mobile services; however, mobile traffic is still growing at an unprecedented rate and the need for more sophisticated broadband services is pushing the limits on current standards to provide even tighter integration between wireless technologies and higher speeds. This has led to the need for a new generation of mobile communications: the so-called 5G. Although 5G systems are not expected to penetrate the market until 2020, the evolution towards 5G is widely accepted to be the logical convergence of internet services with existing mobile networking standards leading to the commonly used term “mobile internet” over heterogeneous networks, with several Gbits/s data rate and very high connectivity speeds. Therefore, to support highly increasing traffic capacity and high data rates, the next generation mobile network (5G) should extend the range of frequency spectrum for mobile communication that is yet to be identified by the ITU-R. The mm-wave spectrum is the key enabling feature of the next-generation cellular system, for which the propagation channel models need to be predicted to enhance the design guidance and the practicality of the whole design transceiver system. The present work addresses the main concepts of the propagation channel behaviour using ray tracing software package for simulation and then results were tested and compared against practical analysis in a real-time environment. The characteristics of Indoor-Indoor (LOS and NLOS), and indoor-outdoor (NLOS) propagations channels are intensively investigated at four different frequencies; 5.8 GHz, 26GHz, 28GHz and 60GHz for vertical polarized directional, omnidirectional and isotropic antennas patterns. The computed data achieved from the 3-D Shooting and Bouncing Ray (SBR) Wireless Insite based on the effect of frequency dependent electrical properties of building materials. Ray tracing technique has been utilized to predict multipath propagation characteristics in mm-wave bands at different propagation environments. Finally, the received signal power and delay spread were computed for outdoor-outdoor complex propagation channel model at 26 GHz, 28 GHz and 60GHz frequencies and results were compared to the theoretical models.

The goal of this research was to find ways to help churches keep safe from a mass shooter. To do that, I hoped to find common ground among academics, law enforcement, peace churches, and defense churches and then leverage that common ground to find ways the groups could collaborate on church safety. I observed three churches and conducted interviews at 14 churches. I reviewed academic literature about academics and law enforcement officers. The common ground I found between all groups was fear of violence, desire to be safe, and a general belief in metaphysical forces. Other key takeaways were that outsiders cannot make accurate assumptions about religious groups based on denomination and that a religious group's response to the threat of violence might not be internally consistent or make sense to outsiders. I designed a course based on my research results and pedagogical best practices. I limited the target audience to police officers because they were the easiest to identify and contact and because their job was to counter violence. Police officers who complete the course should better understand religious worldviews, know examples of how different Christian groups view violence, know how to effectively interact with religious groups, and know how to leverage common ground between religious groups and law enforcement officers. Future efforts include producing the course, observing law enforcement officers, and creating an undergraduate course on contemporary Christianity. / Doctor of Philosophy / The goal of this research was to find ways to help churches keep safe from a mass shooter. I hoped to connect academics, police, and different Christian churches so they could collaborate on church defense. To learn about Christian churches, I attended three churches and interviewed leaders at 14 churches. I read prior research about academics and police. I found that all groups had in common the desire to stay safe from violence and a general belief in a force greater than themselves. I also learned that outsiders could not make accurate assumptions about religious groups based on denomination and that a religious group's response to the threat of violence might not be internally consistent or make sense to outsiders. To apply my results, I designed a course for police officers because they were the easiest group to identify and contact and because their job was to counter violence. Those who complete the course should learn to better understand religious worldviews, know examples of how different Christian groups view violence, know how to effectively interact with religious groups, and know how to leverage commonalities among religious groups and law enforcement officers. Future efforts include producing the course, observing law enforcement officers, and creating an undergraduate course on contemporary Christianity.

The goal of this diploma thesis is to design a shooting sport simulation device. Output of this project should be a market competitive product therefore the design should be focused on low price. Other important aspects are safety, reliability and mutlifunctionality of the whole system. Shooting simulation is based on special technology of sensing laser beams with LED developed in author´s bachelor thesis. The system is controlled by a group of microcontrollers. Their program running and communication is a key part of this thesis.

Poängräkning och resultatanalys vid skytteträning är en viktig aspekt i utvecklingen av skyttens skjutförmåga. En bildbaserad träffpunktdetektionsalgoritm skulle automatisera denna process och bidra med digital presentation av resultatet. Befintliga lösningar är högkvalitativa metoder som detekterar träffpunkter med hög precision. Dessa lösningar är dock anpassade efter orealistiska användningsfall där måltavlor i gott skick som beskjutits vid ett enda tillfälle fotograferas i gynnsamma miljöer. Realistiska skytteförhållanden förekommer utomhus där träffpunkterna täcks med klisterlappar mellan skottrundorna och måltavlorna återanvänds tills dem faller sönder. Detta kandidatarbete introducerar en metod för automatisk detektion av träffar anpassad efter realistiska användningssituationer och bygger på tillgängliga bildanalystekniker. Den föreslagna metoden detekterar punkter med 40 procent noggrannhet i lågkvalitativa måltavlor och uppnår 88 procents noggrannhet i måltavlor av hög kvalitet. Dock produceras ett betydande antal falska positiva utfall. Resultatet påvisar möjligheten att utveckla ett sådant system och belyser de problem som tillkommer en sådan implementation. / Score calculation and performance analysis on shooting targets is an important aspect in development of shooting ability. An image based automatic scoring algorithm would provide automation of this procedure and digital visualization of the result. Prevailing solutions are high quality algorithms detecting hit points with high precision. However, these methods are adapted to unrealistic use cases where single-used, high-quality target boards are photographed in favourable environments. Usually gun shooting is performed outdoors where bullet holes are covered with stickers between shooting rounds, and targets are reused until they fall apart. This bachelor thesis introduces a method of automatic hit point detection adapted to realistic shooting conditions and relies solely on available image processing techniques. The proposed algorithm detects holes with 40 percent detection rate in low-quality target boards, reaching 88 percent detection rate in targets of higher quality. However, producing a significant number of false positives. The result demonstrates the possibilities of developing such a system and highlights the difficulties associated with such an implementation.

Objectifs : Étudier l’incidence de la dépendance à l’alcool ou aux drogues chez les étudiants exposés à la fusillade du Collège Dawson dans les 18 mois suivant celle-ci. Identifier les précurseurs au développement d’une dépendance à une substance psychoactive en tenant compte de la sévérité d’exposition à l’événement. Examiner si la consommation d’alcool 18 mois après les événements est en lien avec les différents groupes de symptômes d’état de stress post-traumatique. Méthode : La population à l’étude est composée de l’ensemble des étudiants du Collège Dawson au moment de l’événement. Les analyses ont été faites auprès de 854 étudiants inscrits au Collège au moment de la fusillade. Résultats : Cinq pourcent des femmes et 7 % des hommes présentent pour la première fois de leur vie un problème de dépendance à une substance suite à la fusillade. Pour les hommes, leur jeune âge, la présence de pensées suicidaires au cours de leur vie, ainsi que le fait d’avoir vu le tireur au moment de la fusillade sont les principaux précurseurs de cas incidents de dépendance. Aucun des précurseurs étudiés n’est significatif pour les femmes. Les hommes et les femmes se distinguent également quant aux symptômes d’état de stress post-traumatique qui prédisent la consommation d’alcool 18 mois après la fusillade. Conclusion : La principale retombée de l’étude est de souligner l’importance de considérer le sexe des individus pour étudier leur consommation de substances psychoactives suite à un traumatisme. / Objectives: To determine the incidence of a drug or alcohol addiction among the students who witnessed the Dawson shooting, in the 18 months that followed the event. Identify predictors of development of an addiction to a psychoactive substance, taking into account the severity of the exposure to the event. Consider whether alcohol consumption, 18 months after the event, is connected to the different categories of symptoms of post-traumatic stress. Method: The population under study includes the students at Dawson College at the time of the event. Analyses were conducted with data from 854 students enrolled at the College when the shooting took place. Results: In the 18 months following the shooting, 5 % of women and 7 % of men developed an addiction to a substance for the first time in their lives. For men, younger age (< 20 years old), the prevalence of suicidal thoughts throughout their lives, as well as having seen the perpetrator at the time of the shooting, were key predictors. No predictors were significant for women. Men and women also differed with regards to post-traumatic stress symptoms that predict alcohol consumption, 18 months after the shooting. Conclusion: The main outcome of this study stresses the importance of considering the gender of individuals, when evaluating their consumption of psychotropic drugs or alcohol after a trauma.

Title: Analysis game performance in attack Objectives: The aim of this following diploma thesis is to analyse all shooting attempts of the game (without standard situations) the finalists in all their matches in the European Championship 2012 in Poland and Ukraine. While watching a statistically expressed by means of tables and graphs other activities preceding the very end, as the way of the attack, the number of players involved, the success rate of shooting, etc. Then the two teams to compare them and find in their game analogous situations leading to termination, their graphical capture and create applications in the training process. Methods: In this following work was use the method of indirect observation of teams matches Spain and Italy at Euro 2012, the videos are available on the website of Czech Television. During observations, we recorded various quantitative indicators into the prepared forms and simplified them graphically. Followed by a quantitative analysis of recorded data (quantitative research, see below), the creation of tables and graphs and then qualitative research and the graphical representation of analogous situations ending offensive firepower, describing the critical points. Results: The results point to the representation of different systems of attacks during events...