When school shootings occur in primary or secondary schools they draw a massive amount of media attention. Frequently, after the shooting stops, the media begins to prognosticate about the factors that led to the occurrence of the tragedy. However, there is a dearth of research examining those factors that are perpetuated by the media, as well as the factors that are most discussed in scholarly publications. Therefore, the aim of this research project was to explore the perpetration factors that have been perpetuated by the media, and compare those to the perpetration factors that are most frequently discussed by researchers. The study posed three research questions, which explored the factors that were most discussed, the differences between print news sources and journal articles in regard to the factors they discussed, and the possible changes of factors through time. The exploration of these research questions was based in social constructionist thought, as the theory provided a framework for exploring how the findings may impact subsequent prevention of the phenomenon. The study found that there were numerous factors discussed by the media and researchers, which broke down into school factors, cultural factors, individual factors, biological facts, and family factors. Through triangulation of available data the study also found that there were differences between the perpetration factors as they are discussed by the print news and scholars, as well as differences in discussion of factors through time. These differences indicate that prevention efforts may be hindered due to a faulty understanding of rampage school shootings, which is being perpetuated by the media. The findings also indicate several areas for future research to focus on, such as: exploration of other media formats, examining the constructs proposed by the research project, and exploring the methods that individuals involved with prevention determine the threat level of individuals who are viewed as posing a risk.

Title: Effect shooting position of accurate sports shooting of air rifle lying position. Objectives: The aim of this empirical - theoretical work is to find out what is the effect of shooting position lying down on shooting from an air rifle. Methods: In this work was used a method of analysis, testing, observation, and method comparison. The method of analysis was applied in the analysis of sport shooting and the shooting position. The method compared in section comparison between the own the shooter's position and deliberately adjusted position. Tables, charts and statistical calculations were performed using functions in Microsoft Excel. Results: The result of the work is that the change in the supine position does not have a significant effect on the accuracy and on the result of the shooting. After the change of position occurred for all shooters to the deterioration of the shooting the result of which are statistically insignificant. Keywords: shooting, air rifle, shooting position, target.

Mass murder in the United States is increasing, yet understanding of mass murderers is still relatively limited. Many perpetrators compose manifestos, which include journals, blogs, letters, videos, and other writings. Previous research has indicated that personal messages are of great social and psychological importance; however, there remains an important gap in the current literature regarding studies specific to these manifestos. As such, the purpose of this qualitative multiple case study was to provide greater understanding of mass murderers' motives and mindsets through psycholinguistic analysis of their recorded words. The constructivist conceptual framework enabled gathering, analyzing, interpreting, and reporting thematic language from a purposeful sample of 12 American mass murderer manifestos, all of which were freely available online. The 6 research questions aligned with 6 psycholinguistic themes: ego survival and revenge; pseudocommando mindset: persecution, envy, obliteration; envy; nihilism; entitlement; and heroic revenge fantasy. Descriptive and analytical coding allowed for the identification of sentences and passages representative of each theme. Findings revealed a high degree of support for nihilism and ego survival and revenge, moderate support for heroic revenge fantasy and pseudocommando mindset, and limited support for entitlement and envy. These findings contribute to the existing literature, enhancing social change initiatives through increased understanding of mass murderers' communications and prompting further needed research. With greater awareness comes the potential for early identification and intervention, which may favorably impact psychology and law enforcement professionals and at-risk individuals.

The investigator made an analytical study of basketball shooting in twenty intercollegiate basketball games for men in selected colleges in the southwest region of the United States during the season of 1948-1949.

Many engineering problems are naturally posed as optimal control problems. It may involve moving between two points in the fastest possible way, or to put a satellite into orbit with minimum energy consumption. Many optimal control problems are too difficult to be solved analytically and therefore require the use of numerical methods. The numerical methods that are the most widespread are the so-called direct methods. However, there is one major drawback with these. If the problem is non-convex, the solution is not guaranteed globally optimal, that is, the absolute best, instead it is guaranteed locally optimal, that is the best in its vicinity. To compensate for this, the problem should be solved several times, under different conditions, in order to investigate whether the solution is a good candidate for the global optimum. CasADi is a software specifically designed for dynamic optimization. It has gained wide spread in recent years because it provides all the necessary building blocks for dynamic optimization. This has given individual engineers and scientists the ability to independently formulate and solve all sorts of optimal control problems. However, this requires good theoretical knowledge of the necessary numerical methods. The advantage of a toolbox, which solves general optimal control problems, is that the underlying numerical methods have been tested and shown to function on optimal control problems with known solutions. This means that the user does not need exhaustive knowledge of the numerical methods involved, but can focus on formulating and solving optimal control problems. The main contribution of this thesis is an optimal control toolbox for MATLAB based on CasADi. The toolbox does not require expert knowledge of the numerical methods, but provides an alternative lower level abstraction that allows for more complex problem formulations. The toolbox implements two direct methods, direct multiple shooting and direct collocation. This allows a problem formulation with many degrees of freedom. The most important property of the toolbox is that the discretization can be changed, without the problem formulation needing to be altered. This way the user can easily change the conditions for his/her problem. The thesis describes how the two implemented direct methods work, and the design choices made. It also describes what remains to test and evaluate, and the problems that have been used as a reference during the development process.

Title: Quality of Performance in Shooting Sports related to Heart Frequency Objectives: The aim of this thesis was to determine the influence of heart frequency on the quality of performance in shooting sports. To compare the control group with the experimental group on the basis of results. Methods: The method for obtaining data was the measurement of heart frequency by means of Polar sporttesters. Processing of obtained results by means of the program Polar ProTrainer 5. Tables and all statistical calculations were carried out by means of adequate functions of the program Microsoft Excel 2010. Results: Results of the thesis pointed out that the heart frequency did not have any influence on the quality of shooting performance of the tested shooter. These results also proved that shooters from the control group were better than shooters from the experimental group. Keywords: quality, performance, shooting, heart, frequency

Title: Analyzis of static and dynamik of shooting Objectives:. Epp, ppc, ipsc, los Methods: V práci bylo zaměřeno na porovnání jednotlivých disciplín a porovnání a ovlivňování jednotlivých typů střelby. Results: Ukázalo se a také potvrdilo, že jestliže chce střelec dosahovat vynikáních výsledku, musí se prioritně zaměřit na jeden druh střelby, nejlépe na určitou disciplínu. Keywords: shouting, gun, training, difference, deportment

Title: Analyzis of static and dynamik of shooting Objectives:. Epp, ppc, ipsc, los Methods: V práci bylo zaměřeno na porovnání jednotlivých disciplín a porovnání a ovlivňování jednotlivých typů střelby. Results: Ukázalo se a také potvrdilo, že jestliže chce střelec dosahovat vynikáních výsledku, musí se prioritně zaměřit na jeden druh střelby, nejlépe na určitou disciplínu. Keywords: shouting, gun, training, difference, deportment

Title: Psychological preparation in sport shooting Objectives: The objective of this thesis is usage of psychological preparation by sport shooting representation team in Czech Republic. How they are informed about psychological preparation. What it means to them. Which types of regulation they use and how they behave before and after a competition. Methods: A Questionnaire was used as a method for data obtaining. The questionnaire was compiled for the purposes of this Thesis. The researched group contained sport shooting athletes from Czech Republic representation team. Results: The results of the research showed that sport shooters think the psychological preparation is very useful. Unfortunately only half of respondents use it. The most popular psychological regulators are verbal activity, concentration and music. Key words: Sport shooting, sport training, psychological preparation, psychological regulators, emotions

M.Ing.