The United States faces an ever-growing public health concern of gun violence, having the highest rate of homicide by firearm use among Western countries. American leaders on this subject have debated for many years on how to address this issue. Such debate, in turn, has brought up the concern of the mentally ill in possession of firearms, especially in light of mass shootings. The goal of this thesis is to determine the existence of a relationship between gun violence and mental illness. The significance of discerning this relationship is multi-faceted in that gun violence psychologically traumatizes its victims and also has been linked with mental illnesses in a stigmatizing manner, thanks to the spotlight on mass shootings by the media. Through literature analysis of the behaviors of those with schizophrenia, bipolar disorder, and alcohol abuse, it was determined that, although increasing a person’s chances for experiencing at-risk behaviors for violence, intrinsic mental disorders such as schizophrenia and bipolar disorder are not statistically associated with gun violence. In fact, not only has it been reported that very few firearm-related acts of violence are linked with those with mental illnesses, but also it has been noted that those with serious psychiatric disorders are victimized more often than a person without mental illness. Consequently, it is critical for physicians, lawmakers, and even the general public to take active measures to ensure that those with mental illnesses are not shamed for their condition and receive the necessary services to lead an ordinary lifestyle among their peers.

In Sweden, there is an intense and politicized debate about the phenomenon of firearm-related violence by criminal gangs, especially among Sweden's parliamentary parties. The purpose of the following study is to explain how a phenomenon is constructed and managed politically by the government and the opposition. The focus will be on how framing and accountability are exerted concerning gang-related shootings in Swedish politics. The theory that will be used to analyze the political game is Boin, ‘t Hart and McConnell's theoretical framework about framing and crisis exploitation. The study shows that even though different frameworks are used, there is an existing consensus among the political parties Socialdemokraterna, Moderaterna and Vänsterpartiet that firearm-related violence by criminal gangs is considered a crisis in Swedish politics. It is evident that the government chooses to deny responsibility while the opposition focus on blaming the government. It was therefore concluded that the outcome of the political game regarding firearm-related violence by criminal gangs will be a ‘blame showdown’, where the political implications are difficult to apprehend.

One of the most hotly contested topics in the world today revolves around an object. An object that has caused debate among all members of society both in the United States, and all across the globe. But how could an object, something that on its own does nothing, spur such heated argument? This object is the evolution of invention and the product of fighting amongst each other. This object changes the way people think and how they act. This object can be used for both good and bad. This object is a gun. This research project will explore the Second Amendment of the United States Constitution in the 21st century, providing an in depth examination of firearm freedoms and their relationship with public safety and interests. This research is integral to our society, both politically and publically. Firearms are a significant aspect of our country, a longstanding right that many people view as one of the most essential rights of a United States citizen. The research presented will examine vital aspects of the debate regarding firearm rights, and analyze the relationship between firearm freedoms and public safety. This thesis will examine the benefits and detriments regarding firearm freedoms and their relationship with public safety. This thesis will first establish the necessary background information, including general information, legislation, and statistics, in order to analyze the aforementioned relationship. The next step in the analysis is to examine the benefits of firearm freedoms, as well as the problems with having unlimited firearm freedoms. This thesis will also examine other essential areas regarding this debate, including political impact, public opinion, and global comparisons. The thesis will conclude with possible alternatives for legislation regarding firearms, and an analysis of the likely proper path upon which to proceed.

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[pt] Um dos casos clínicos mais frequentes na sociedade moderna envolve a localização e extração de projéteis de armas de fogo, que normalmente são feitos de chumbo, um material não ferromagnético. O desenvolvimento de uma técnica que possibilite a localização precisa destes auxiliará o procedimento de remoção cirúrgica, tendo vasta relevância e impactando diretamente no aumento da taxa de sobrevivência de pessoas feridas. Dessa forma, esta dissertação apresenta e discute duas novas abordagens baseadas em técnicas de inteligência computacional, objetivando a localização de projéteis de armas de fogo inseridos no corpo humano, a partir do processamento da informação contida em mapas de campo magnético. Em ambas as abordagens analisadas modela-se o projétil como uma esfera de raio a, localizado em um espaço de busca contido em um plano xy, o qual está situado a uma distância h do sensor no eixo z. As técnicas de localização requerem a geração de um campo magnético primário alternado por meio de um solenoide, o qual incide sobre o espaço de busca. Caso exista um projétil de arma de fogo nesta região, serão induzidas correntes parasitas no projétil, as quais, por sua vez, produzirão um campo magnético secundário, que pode ser medido por um sensor de alta sensibilidade localizado na extremidade do solenoide. Na primeira abordagem analisada, as posições x e y do projétil são determinadas por um algoritmo de janelamento que considera valores máximos e médios pertencentes aos mapas de campo magnético secundário. A determinação da distância h entre a esfera e o sensor foi obtida por meio de uma rede neural, e o raio da esfera a é estimado por um algoritmo genético. Na segunda abordagem, as quatro variáveis de interesse (x, y, h e a) são inferidas diretamente por um algoritmo genético. Os resultados obtidos são avaliados e comparados. / [en] In modern society, one of the most frequent clinical cases involves location and extraction of firearms projectiles, usually made of lead, a non-ferromagnetic material. The development of a technique that allows the precise location of these projectiles will aid their surgical removal, which has a great relevance because it contributes directly to the increase of the survival rate of wounded patients. Thus, this dissertation presents and discusses two new approaches based on computational intelligence techniques, aiming at locating firearm projectiles inserted into the human body, by processing the information contained in magnetic field maps. On both approaches, the projectile is modeled by a sphere with radius a, located on a search space contained in a xy plane that is situated at a distance h from the sensor, along the z axis. The proposed location techniques require the generation of a primary alternating magnetic field by means of a solenoid, which aims at inducing eddy currents in a firearm projectile contained in the search space. In turn, these currents will produce a secondary magnetic field, which can be measured by a high-sensitivity sensor located at the bottom of the solenoid. In the first developed technique, the x and y positions of the projectile were estimated by a windowing algorithm that takes into account maximum and mean values contained on the secondary magnetic field maps. In turn, the distance h between the sphere and the sensor is inferred by a neural network, and the radius of the sphere a is estimated by a genetic algorithm. In the second technique, the four variables of interest (x, y, h and a) are inferred directly by a genetic algorithm. The results obtained are evaluated and compared.

In this dissertation, the researcher wants to establish the use of firearm evidence in the investigation of the crime of murder. Firearm evidence can be of significance to the investigators during murder investigations. To determine the importance of this evidence the researcher has formulated the following research questions to address the research problem:  What is the role of forensic science in the investigation of crimes?  How can firearm evidence be used in the investigation of murder? An empirical research design and qualitative research approach were used for this dissertation. International and national literature sources were consulted and the researcher conducted semi-structured interviews with the investigators from Akasia SAPS, crime scene experts from the Pretoria North LCRC and ballistics experts from the Forensic Science Laboratory in Silverton, Pretoria. The role of forensic science and the use of firearm evidence in the investigation of murder were established. Recommendations have been made for further research on aspects highlighted by the findings. / Police Practice / M. Tech. (Forensic Investigations)

Forensic science has a significant historical and contemporary relationship with the criminal justice system. It is a relationship between two disciplines whose origins stem from different backgrounds. It is trite that effective communication assist in resolving underlying problems in any given context. However, a lack of communication continues to characterise the intersection between law and science. As recently as 2019, a six-part symposium on the use of forensic science in the criminal justice system again posed the question on how the justice system could ensure the reliability of forensic science evidence presented during trials. As the law demands finality, science is always evolving and can never be considered finite or final. Legal systems do not always adapt to the nature of scientific knowledge, and are not willing to abandon finality when that scientific knowledge shifts. Advocacy plays an important role in the promotion of forensic science, particularly advocacy to the broader scientific community for financial support, much needed research and more testing. However, despite its important function, advocacy should not be conflated with science. The foundation of advocacy is a cause; whereas the foundation of science is fact. The objective of this research was to conduct a qualitative literature review of the field of forensic science; to identify gaps in the knowledge of forensic science and its integration in the criminal justice system. The literature review will provide researchers within the field of forensic science with suggested research topics requiring further examination and research. To achieve its objective, the study critically analysed the historical development of, and evaluated the use of forensic science evidence in legal systems generally, including its role regarding the admissibility or inadmissibility of the evidence in the courtroom. In conclusion, it was determined that the breadth of forensic scientific knowledge is comprehensive but scattered. The foundational underpinning of the four disciplines, discussed in this dissertation, has been put to the legal test on countless occasions. Some gaps still remain that require further research in order to strengthen the foundation of the disciplines. Human influence will always be present in examinations and interpretations and will lean towards subjective decision making. / Jurisprudence / D. Phil.

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Syfte: Syftet med denna studie är att undersöka vilken betydelse social påverkan upplevs ha i förebyggande av avvikande beteende och våldsutövning samt att diskutera hur Fittjabors förhållningssätt till och erfarenheter av preventiv vuxenroll och kollektiv självförmåga under perioden 1971–2020 kan förstås teoretiskt. Teori och metod: Den teoretiska referensramen utgörs av teorin om kollektiv självförmåga med fokus på social påverkan och teorin om sociala band med fokus på vardagsanknytning. Datainsamlingsmetoden utgörs av semi-strukturerade djupintervjuer med tio vuxna Fittjabor. Resultat och analys: Informanterna redogör för upplevda svårigheter men även för vikten av att utöva social påverkan vid förekomsten av avvikande och kriminella beteenden hos unga män i Fittja. De anser att vuxna lokalbor bör ha en grundläggande preventiv roll i förhållande till unga män i området. För att social påverkan ska kunna fungera brottspreventivt krävs enligt informanternas upplevelser att relationer mellan Fittjaborna stärks, att boende och verksamma aktörer i Fittja samverkar, att vuxna (både lokalbor och aktörer) bygger relationer till unga män i området samt att preventiva insatser sätts in tidigt. Vuxna Fittjabor har av informanterna med åren upplevts utöva allt mindre social påverkan och särskilt undvikit subgrupper av unga män, det vill säga unga män med tydlig koppling till en kriminell livsstil. Detta har i analysen diskuterats som en eventuell delförklaring till varför unga mäns beteenden under 2010-talet och 2020 upplevs ha nått en nivå som är svår att reglera med social påverkan. Analysen har vidare framhållit att social påverkan är ett beteende som vuxna lokalbor behöver träna sig själva i att utöva och unga män tränas i att motta, men även att det behöver utövas kontinuerligt och riktas mot samtliga unga män för att förebygga bildandet av subgrupper som frikopplar sig från den konforma samhällsordningen och lokalbefolkningens påverkan. / Aim: This study aims to investigate the perceived significance of social influence in deviant behavior and community violence prevention and to discuss how Fittja resident’s perceptions of pre­ventive adult roles and collective efficacy during 1971–2020 can be understood theoreti­cally.   Theory and method: The theoretical framework consist of collective efficacy theory, focusing on social influence and social bonds theory, focusing on everyday attachment. Data was collected by using semi-structured in-depth interviews with ten adult Fittja residents. Results and analysis: The informants report on perceived difficulties but also on the importance of exercising social influence towards young men with deviant and criminal behavior in Fittja. They believe that local adults should have a basic preventive role in relation to young men in the area. According to the informants, certain measurements need to be taken to obtain crime prevention effects from social influence: a) relations between Fittja residents need to be strengthened, b) collaboration between residents and local actors in Fittja needs to be established, c) adults (both residents and local actors) need to build relationships with young men in the area and d) preventive measures need to be taken early. Adult residents have according to the informants over the years been perceived to exert less and less social influence and especially avoid subgroups of young men, meaning young men with a clear connection to a criminal lifestyle. The analysis shows that this could be a possible partial explanation for why young men’s behavior during the 2010s and 2020 is perceived to have reached a level that is difficult to regulate with social influence. The analysis argues that social influence is a behavior that adult residents need to train themselves in exercising and young men trained in receiving, but also that social influence needs to be exercised continuously and directed at all young men to prevent the formation of subgroups that disconnect from conformity and the influence of the local population. / Populärvetenskaplig sammanfattning  Denna studie undersöker vilken betydelse social påverkan upplevs ha inom lokalsamhällen. Studien lyfter frågan huruvida boende i Fittja har reagerat på inkorrekta och kriminella beteenden hos unga män i området och om upplevs kunna vara en metod för förebyggande av avvikande och mindre kriminella beteenden samt på längre sikt våldsutövning i form av skjutvapenvåld. Tio vuxna Fittjabor har intervjuats om synen på sin egen roll i förebyggande av ungdomskriminalitet i området samt om upplevelser av hur de och andra Fittjabor har utövat social påverkan under perioden 1971–2020. Studien utgår från de teoretiska perspektiven social påverkan och vardagsanknytning som hämtats och modifierats ur teorin om kollektiv självförmåga och teorin om sociala band. De teoretiska perspektiven har integrerats med grund i idén om att när vuxna i lokalsamhällen har en god relation och dialog med unga män i området, så underlättas möjligheten att tillrättavisa dem om de skulle uppföra sig på ett avvikande eller mindre kriminellt sätt. Den framåt­blickande idén med perspektiven ifråga är att kontinuerlig dialogföring, relationsbyggande och tillrättavisning av unga män bryter inkorrekta och kriminella beteenden i ett tidigt skede och förebygger att beteendena utvecklas till grövre sådana, såsom exempelvis våldsbrott.  Resultatet och analysen visar att informanterna tycker att det är svårt att utöva social påverkan mot unga män som beter sig inkorrekt och kriminellt, men ändå anser att det är viktigt att göra det samt att vuxna har en viktig roll i denna fråga. De har även en upplevelse av att vuxna lokalbor behöver bygga relationer med varandra och med unga män samt samarbeta med olika aktörer i Fittja för att kunna förebygga ungdomsbrottslighet. Framförallt anser de att detta behöver göras medan unga män fortfarande är pojkar. Vuxna lokalbor i Fittja upplevs enligt informanterna ha utövat allt mindre social påverkan genom åren och särskilt undvikit unga män med lite stökigare och kriminella beteenden jämfört med mer skötsamma unga män från området. I analysen diskuteras det att detta skulle kunna vara en delförklaring till den upplevda förvärringen av unga mäns beteenden under 2010-talet och år 2020 och varför social påverkan under dessa senare tider flera gånger inte upplevs ha en inverkan på deras beteenden. Analysen påvisar att social påverkan är ett beteende som vuxna lokalbor behöver träna sig själva i att utöva och unga män tränas i att motta. Det konstateras vidare att social påverkan behöver utövas kontinuerligt och riktas mot samtliga unga män för att inte tillåta bildandet av mindre grupper av unga män som lever en kriminell livsstil och som lokalbefolkningen sedan inte kan hantera.

A First Responding Officer plays a significant role at the crime scene. Failure to handle the crime scene in accordance with official directives such as the South African Police Service National Instruction 1 of 2015 and National Crime Combatting Forum Instruction 10 of 2015, which are regarded as guiding tools for the successful administration of a crime scene, may jeopardize a case. The crime scene is also regarded as the primary source of information that can assist the investigation. When the crime scene is handled in accordance with the SAPS official directives, the suspects can be more readily identified. Furthermore, the investigation can be concluded successfully whereby it may be beneficial for the community. / Mohlankedi wa maphodisa wa mathomo yo a fihlago lefelong la bosenyi o raloka tema ye bohlokwa fao tiragalong ya bosenyi. Go palelwa ke go laola tiragalo yeo ya bosenyi ka go latela ditaelo tsa semmuso tsa go swana le Taelo ya Bosetshaba ya bo 1 ya 2015 ya Tirelo ya Maphodisa ya Afrika Borwa (SAPS) le Taelo ya Bosetshaba ya bo 10 ya Seboka sa go Lwantsha Bosenyi ya 2015, e lego tseo di bonwago bjalo ka ditlabelo tseo di hlahlago maphodisa go laola tiragalo ya bosenyi ka katlego, go ka senya molato. Lefelo la bosenyi le lona le bonwa bjalo ka mothopo o bohlokwa wa tshedimoso wo o ka thusago dinyakisiso. Ge lefelo la bosenyi le ka laolwa go latela ditaelo tsa semmuso tsa SAPS, bagononelwa ba ka utollwa gabonolo. Godimo ga fao, dinyakisiso di ka phethwa ka katlego fao e lego gore se se ka hola setshaba. / Motlhankedi yo o tsibogang la ntlha o na le seabe sa botlhokwa kwa lefelong la bosenyi. Go retelelwa ke go diragatsa mo lefelong la bosenyi go ya ka dikaelo tsa semmuso di tshwana le Taelo ya Bosetshaba ya bo1 ya 2015 ya Tirelo ya Sepodisi sa Aforikaborwa (SAPS) le Taelo ya bo 10 ya 2015 ya Foramo ya Bosetshaba ya Twantsho ya Bosenyi, tse di tsewang e le didiriswa tsa kaelo tsa tsamaiso e e atlegileng ya lefelo la bosenyi, go ka nna matshosetsi mo kgetsing. Gape lefelo la bosenyi le tsewa e le motswedi wa ntlha wa tshedimosetso o o ka thusang ka dipatlisiso. Fa tiragatso ya mo lefelong la bosenyi e dirwa go ya ka dikaelo tsa semmuso tsa SAPS, go ka supiwa babelaelwa ka bonako. Mo godimo ga moo, dipatlisiso di ka konosediwa ka katlego mme seo se ka nna mosola mo baaging. / Criminology and Security Science / M. Tech. (Forensic Investigation)