Accuracy and Reproducibility of Bullet Trajectories in FARO Zone 3D

With three-dimensional (3D) laser scanning technology and software packages, the practice of documenting and measuring bullet trajectories has benefited from greater accuracy and reproducibility. This study investigated the accuracy and reproducibility of the bullet trajectory tools in the software package, FARO Zone 3D (FZ3D). Twelve participants were provided laser scanner data for 21 bullet trajectories on drywall panels with impact angles between 25° and 90°. When the impact plane was manually aligned by the operator, 75% of the absolute errors were within 0.91° and 0.98° for the azimuth and vertical angles, respectively. The vertical angle improved to 0.47° when impact plane alignment was taken with respect to gravity (no operator influence). Thus, manual alignment is shown to be subject to greater error than alignment with gravity. However, this study shows that the accuracy and reproducibility of the FZ3D bullet trajectory tools to be comparable with previous research studies.     

Art of the Power Deal: The Four Negotiation Roles of Donald J. Trump

In this article, I mine President Donald Trump’s considerable writing and speaking record to synthesize the key elements of his deal‐making approach to help make better sense of his rhetoric and actions on the world’s diplomatic stage. My argument is that Trump’s coercive negotiation style is best understood through the prism of his four public roles: observer, performer, controller, and disrupter. In this article, I analyze how these roles translate into his negotiating behavior. Spotting and exploiting vulnerability is his trade; leverage and bravado are his tools. After assessing the opposing side, Trump uses leverage to threaten his counterparts’ weaknesses, while using bravado to play up the advantages of reaching an agreement on his terms. This way, he presents a drastic structured choice to his opponents, leaving them the least maneuvering space. In the final section of the paper, I illustrate how the four‐role framework helps explain Trump’s decisions in the nuclear negotiations with North Korean leader Kim Jong Un. I also consider opportunities for further research.     

Observations and 3D Analysis of Controlled Cast-Off Stains

Cast-off stains are common patterns found at crime scenes involving blood shedding events. However, the analysis and interpretation of cast-off patterns remains an area lacking tools for crime scene investigators. Analyzing cast-off patterns may allow investigators to interpret the area from where an object may have been swung and thus determine the approximate location of a suspect or victim. This study looked at the position and distribution of cast-off patterns and area of origin as a starting point for the development of a method to analyze cast-off patterns. Through a series of tests using a controlled cast-off rig (n = 10), it was observed that a Path Volume Envelope (PVE) may be identified where the swinging path is contained in a volume along with an area of exclusion. The calculated center, linear position of the PVE was found to have an average error of just over 3.2 cm when compared to the known object swing path position. The maximum deviation of the PVE to the known swing path was found to be 5.0 cm with a standard deviation of 1.4 cm. Additional studies are required to investigate the effects of partial cast-off stains, wielded object velocity, direction of swing, distance from the projected surface, and other factors. The observations and analysis from this study were seen to be predictable and repeatable and may provide a possible new method for investigators to interpret cast-off stains.     

The 2018 California Wildfires: Integration of Rapid DNA to Dramatically Accelerate Victim Identification

In November 2018, Butte County, California, was decimated by the Camp Fire, the deadliest wildfire in state history. Over 150,000 acres were destroyed, and at its peak, the fire consumed eighty acres per minute. The speed and intensity of the oncoming flames killed scores of people, and weeks before the fire was contained, first responders began searching through the rubble of 18,804 residences and commercial buildings. As with most mass disasters, conventional identification modalities (e.g., fingerprints, odontology, hardware) were utilized to identify victims. The intensity and duration of the fire severely degraded most of the remains, and these approaches were useful in only 22 of 84 cases. In the past, the remaining cases would have been subjected to conventional DNA analysis, which may have required months to years. Instead, Rapid DNA technology was utilized (in a rented recreational vehicle outside the Sacramento morgue) in the victim identification effort. Sixty-nine sets of remains were subjected to Rapid DNA Identification and, of these, 62 (89.9%) generated short tandem repeat profiles that were subjected to familial searching; essentially all these profiles were produced within hours of sample receipt. Samples successfully utilized for DNA identification included blood, bone, liver, muscle, soft tissue of unknown origin, and brain. In tandem with processing of 255 family reference samples, 58 victims were identified. This work represents the first use of Rapid DNA Identification in a mass casualty event, and the results support the use of Rapid DNA as an integrated tool with conventional disaster victim identification modalities.     

Enduring Resilience: How Oil Markets Handle Disruptions

Plentiful spare capacity persists in the oil production and tanker industries, contrary to Michael Levi's contention in his response to our earlier article, “Protecting ‘The Prize.' ” OPEC leaders retain excess capacity to minimize cartel members' cheating, and tanker companies retain considerable flexibility that allows them to adapt to political-military and other fluctuations in the market. Oil supplies are not on a knife-edge; exaggerated claims of energy vulnerability distort U.S. national security policy.     

Globalization,Systems Integration,and the Future of Great Power War

Contemporary economic globalization differs from past increases in global commerce, especially because modern foreign direct investment and systems integration techniques allow factories in different countries to specialize in the design and production of parts rather than complete products. Stephen Brooks has argued, based on both liberal and realist logics, that this new form of globalization might bring a “commercial peace,” at least among the great powers. But economic globalization did not simply appear by itself. Firms and governments made conscious decisions through a process of systems integration and strategic planning that led to a wide variety of international economic relationships. That diversity of economic connections combines with the variety of strategic situations in the international environment—variations in geography, national intentions, policy history, etc.—to suggest a range of possible constraints on countries' offensive capability and on the prospects for economic gains from conquest. As has always been the case, conquest in the future will sometimes prove valuable and other times will not. Globalization does not imply the dawn of an era of commercial peace.     

Notes on contributors

There is a widely held perception that intelligence is the purloining of secret information from foreign countries, which is then used for advantage in wartime and as an aid to diplomacy and statecraft in peacetime, and the catching of foreign spies, or counterintelligence. In reality, intelligence serves a number of other purposes, such as technology development in support of other intelligence programmes, support to treaty negotiations and monitoring, arms control, and more. Several recently declassified Cold War intelligence activities are reviewed as examples of some of the other uses and benefits of intelligence gathering, and to show that leaders, policy makers and other consumers of intelligence may choose to use, abuse or ignore it, depending upon their own predilection, prejudices, biases, or political agendas, and sometimes altering the original intent of the intelligence.     

Fostering rural sense of place: the missing piece in Uturu,Nigeria

This article argues that the absence of a sense of place in rural Nigeria impedes development. It uses the case of Uturu to show that understanding the relationships people share with natural features and phenomena around them is important in their development. It proposes a framework constituted of rural mind, rural life, and rural character; and argues that strengthening one or the other pillar of this framework will likely lead to strengthening sense of place. Using in-depth interviews and historically informed observation, the authors show that a weak sense of place leads to poor development, and provide suggestions for improvement.

Encourager le sentiment d'appartenance en milieu rural : la pièce manquante à Uturu, au Nigéria

Cet article soutient que l'absence d'un sentiment d'appartenance dans le Nigéria rural entrave le développement. Il se sert du cas d'Uturu pour montrer que la compréhension des relations que les personnes ont avec les caractéristiques et phénomènes naturels les entourant est importante pour leur développement. Il propose un cadre constitué de l'esprit rural, de la vie en milieu rural et du caractère rural, et soutient que le renforcement d'un ou plusieurs piliers de ce cadre donnera lieu au renforcement du sentiment d'appartenance à un lieu. À l'aide d'entretiens approfondis et de l'observation à la lumière de l'histoire, les auteurs montrent qu'un sentiment faible d'appartenance donne lieu à un développement faible et proposent des suggestions pour améliorer la situation.

Fomentando un sentido de lugar en el ámbito rural: la pieza faltante en Uturu, Nigeria

El presente artículo sostiene que la falta del sentido de lugar en la Nigeria rural impide el desarrollo. A partir del caso de Uturu, se demuestra que un elemento importante para lograr el desarrollo de las personas es comprender las relaciones que establecen con los elementos naturales y con los fenómenos que las rodean. El artículo propone un marco analítico integrado por la mente rural, la vida rural y el carácter rural, sosteniendo que al fortalecer uno u otro de los pilares de este marco, probablemente se fortalezca también el sentido de lugar. Apoyados en entrevistas a profundidad y en observaciones respaldadas por la historiografía, los autores demuestran que un sentido de lugar débil conduce a un pobre desarrollo, formulando sugerencias para mejorar la situación.

Promovendo o senso de pertencimento rural: a peça que falta em Uturu, Nigéria

Este artigo argumenta que a ausência de um senso de pertencimento na zona rural da Nigéria impede o desenvolvimento. O autor utiliza o caso de Uturu para mostrar que compreender as relações que as pessoas compartilham com características e fenômenos naturais que as cercam é importante para o seu desenvolvimento. O artigo propõe uma estrutura constituída de mentalidade rural, vida rural e caráter rural e argumenta que fortalecer um ou outro pilar desta estrutura levará provavelmente ao fortalecimento do senso de pertencimento. Utilizando entrevistas aprofundadas e observações com bases históricas, os autores mostram que um senso de pertencimento fraco leva a um desenvolvimento ruim e oferecem sugestões para melhoria.     

Job Stress and Job Satisfaction Among Jail Staff: Exploring Gendered Effects

Despite increased representation in correctional work settings, women still encounter obstacles in this male-dominated occupation—obstacles that have the potential to affect their levels of job stress and job satisfaction. Although gender-based differences in job stress and job satisfaction have been analyzed in several prison settings, much less work has been conducted in the often neglected correctional arena of jails. The current study fills this empirical void by examining jail staff at a large county correctional system in Orlando, Florida. Ordinary least squares regression analysis indicated that different facets of the work environment differentially affected the job stress and job satisfaction of 419 women and 493 men working in a large urban jail system. Specifically, role ambiguity, perceived dangerousness, coworker relations, input into decision making, and administrative support had larger effects on job stress for women compared to men. For job satisfaction, the only workplace variable to have a gendered effect was administrative support, which also had a greater effect for women than men. The findings reveal gender-related differences, especially in terms of job stress.