4,020 research outputs found
Public or private religiosity: which Is protective for adolescent substance use and by what pathways?
While it is well understood that adolescent religiosity is associated with the use and abuse of licit and illicit substances, few studies have revealed the pathways through which religiosity buffers youth against involvement in such behavior. The aim of this study is to examine the complexity of the relationships between religiosity, sensation seeking, injunctive norms, and adolescent substance use. Using a national sample of adolescents (N = 18,614), negative binomial regression and path analysis were used to examine the various components of the relationship between religiosity and the use of cigarettes, alcohol, and marijuana. Results indicate that private religiosity moderates the relationship between key risk factors and substance use. Public and private religiosity were associated with tolerant injunctive substance use norms which, in turn, were associated with substance use. Implications for research and theory related to religiosity and adolescent substance use are discussed
Selective Use of Pericardial Window and Drainage as Sole Treatment for Hemopericardium from Penetrating Chest Trauma
Background
Penetrating cardiac injuries (PCIs) are highly lethal, and a sternotomy is considered mandatory for suspected PCI. Recent literature suggests pericardial window (PCW) may be sufficient for superficial cardiac injuries to drain hemopericardium and assess for continued bleeding and instability. This study objective is to review patients with PCI managed with sternotomy and PCW and compare outcomes.
Methods
All patients with penetrating chest trauma from 2000 to 2016 requiring PCW or sternotomy were reviewed. Data were collected for patients who had PCW for hemopericardium managed with only pericardial drain, or underwent sternotomy for cardiac injuries grade 1–3 according to the American Association for the Surgery of Trauma (AAST) Cardiac Organ Injury Scale (OIS). The PCW+drain group was compared with the Sternotomy group using Fisher’s exact and Wilcoxon rank-sum test with P\u3c0.05 considered statistically significant.
Results
Sternotomy was performed in 57 patients for suspected PCI, including 7 with AAST OIS grade 1–3 injuries (Sternotomy group). Four patients had pericardial injuries, three had partial thickness cardiac injuries, two of which were suture-repaired. Average blood drained was 285mL (100–500 mL). PCW was performed in 37 patients, and 21 had hemopericardium; 16 patients proceeded to sternotomy and 5 were treated with pericardial drainage (PCW+drain group). All PCW+drain patients had suction evacuation of hemopericardium, pericardial lavage, and verified bleeding cessation, followed by pericardial drain placement and admission to intensive care unit (ICU). Average blood drained was 240mL (40–600 mL), and pericardial drains were removed on postoperative day 3.6 (2–5). There was no significant difference in demographics, injury mechanism, Revised Trauma Score exploratory laparotomies, hospital or ICU length of stay, or ventilator days. No in-hospital mortality occurred in either group.
Conclusions
Hemodynamically stable patients with penetrating chest trauma and hemopericardium may be safely managed with PCW, lavage and drainage with documented cessation of bleeding, and postoperative ICU monitoring.
Level of evidence
Therapeutic study, level IV
DROP (DRone Open source Parser) Your Drone: Forensic Analysis of the DJI Phantom III
The DJI Phantom III drone has already been used for malicious activities (to drop bombs, remote surveillance and plane watching) in 2016 and 2017. At the time of writing, DJI was the drone manufacturer with the largest market share. Our work presents the primary thorough forensic analysis of the DJI Phantom III drone, and the primary account for proprietary file structures stored by the examined drone. It also presents the forensically sound open source tool DRone Open source Parser (DROP) that parses proprietary DAT files extracted from the drone\u27s nonvolatile internal storage. These DAT files are encrypted and encoded. The work also shares preliminary findings on TXT files, which are also proprietary, encrypted, encoded, files found on the mobile device controlling the drone. These files provided a slew of data such as GPS locations, battery, flight time, etc. By extracting data from the controlling mobile device, and the drone, we were able to correlate data and link the user to a specific device based on extracted metadata. Furthermore, results showed that the best mechanism to forensically acquire data from the tested drone is to manually extract the SD card by disassembling the drone. Our findings illustrated that the drone should not be turned on as turning it on changes data on the drone by creating a new DAT file, but may also delete stored data if the drone\u27s internal storage is full
What does it mean to use competencies in "praxis" with undergraduate students at Historically Black institutions?
Dialogue concerning competencies in community psychology practice has contributed to the articulation of undergraduate and graduate education in community psychology. This dialogue shares resources in applying community psychology competencies but lacks a voice—Historically Black Colleges and Universities (HBCUs). Historically Black Colleges and Universities have undergraduate courses and graduate programs in community psychology, yet, no one has written on competencies and "praxis" from these settings. This article uses reflective narratives from faculty and undergraduate students to illustrate the use of competencies in community psychology practice with a local community. The context of the institution, emerging from legal segregation in the south, and primarily populated by economically disadvantaged and ethnic minority students, models community inclusion, ecological perspectives, empowerment, value of socio-cultural diversity and reflective practice in a neighborhood revitalization project. Discussion centers on lessons learned and challenges in engaging in praxis across undergraduate settings and HBCUs
What does it mean to use competencies in "praxis" with undergraduate students at Historically Black institutions?
Dialogue concerning competencies in community psychology practice has contributed to the articulation of undergraduate and graduate education in community psychology. This dialogue shares resources in applying community psychology competencies but lacks a voice—Historically Black Colleges and Universities (HBCUs). Historically Black Colleges and Universities have undergraduate courses and graduate programs in community psychology, yet, no one has written on competencies and "praxis" from these settings. This article uses reflective narratives from faculty and undergraduate students to illustrate the use of competencies in community psychology practice with a local community. The context of the institution, emerging from legal segregation in the south, and primarily populated by economically disadvantaged and ethnic minority students, models community inclusion, ecological perspectives, empowerment, value of socio-cultural diversity and reflective practice in a neighborhood revitalization project. Discussion centers on lessons learned and challenges in engaging in praxis across undergraduate settings and HBCUs
Forensic State Acquisition from Internet of Things (FSAIoT): A General Framework and Practical Approach for IoT Forensics through IoT Device State Acquisition
IoT device forensics is a difficult problem given that manufactured IoT devices are not standardized, many store little to no historical data, and are always connected; making them extremely volatile. The goal of this paper was to address these challenges by presenting a primary account for a general framework and practical approach we term Forensic State Acquisition from Internet of Things (FSAIoT). We argue that by leveraging the acquisition of the state of IoT devices (e.g. if an IoT lock is open or locked), it becomes possible to paint a clear picture of events that have occurred. To this end, FSAIoT consists of a centralized Forensic State Acquisition Controller (FSAC) employed in three state collection modes: controller to IoT device, controller to cloud, and controller to controller. We present a proof of concept implementation using openHAB -- a device agnostic open source IoT device controller -- and self-created scripts, to resemble a FSAC implementation. Our proof of concept employed an Insteon IP Camera as a controller to device test, an Insteon Hub as a controller to controller test, and a nest thermostat for a a controller to cloud test. Our findings show that it is possible to practically pull forensically relevant state data from IoT devices. Future work and open research problems are shared
Critical Field Strength in an Electroclinic Liquid Crystal Elastomer
We elucidate the polymer dynamics of a liquid crystal elastomer based on the
time-dependent response of the pendent liquid crystal mesogens. The molecular
tilt and switching time of mesogens are analyzed as a function of temperature
and cross-linking density upon application of an electric field. We observe an
unexpected maximum in the switching time of the liquid crystal mesogens at
intermediate field strength. Analysis of the molecular tilt over multiple time
regimes correlates the maximum response time with a transition to entangled
polymer dynamics at a critical field strength.Comment: 4 pages, 3 figure
The Economic Impacts of Land Use Policies in Lexington, Kentucky
Every five years, Lexington-Fayette Urban County Government’s Planning Commission adopts a comprehensive plan detailing goals and objectives that guide the city’s land use planning. Maintaining the city’s urban service area and preserving its rural and agricultural areas are integral parts of this plan. Within the urban service area, land is zoned to permit various types of urban uses such as residential, commercial, and industrial use. Land outside the urban service area is subject to several land use policies designed to preserve the rural characteristics of these areas. This report examines the effects of Lexington’s land use policies and specifically its urban service area
Educational and behavioral interventions for asthma: who achieves which outcomes? A systematic review
- …