Quantification of Pubic Symphysis Metamorphosis Based on the Analysis of Clinical MDCT Scans in a Contemporary Malaysian Population

Forensic age estimation methods are biased to sex and population; in general, accuracy is reduced when applied to foreign populations. This study assessed the accuracy of the Suchey–Brooks method in contemporary Malaysian individuals and aimed to formulate population‐specific standards. Multi‐detector computed tomography scans of 355 individuals (165 male; 190 female) of 15–83 years of age were reconstructed using 3D‐volumetric rendering in RadiAnt. Pubic symphyseal phase, bias, inaccuracy, and percentage correct age classifications are examined. Transition analysis was used to develop age estimation standards. High observer agreement (κ = 0.763–0.832) and a positive relationship between age and pubic symphyseal phase (r = 0.884–0.90) were demonstrated. Mean inaccuracies were 8.62 and 8.95 years for males and females, respectively; overall correct classification was 97.8%. Transition ages between phases in males were 18.79, 23.29, 28.85, 43.64, and 61.15 years; in females, the corresponding data were 19.77, 22.53, 32.62, 41.85, and 57.39 years.     

关于推迟共青团员离团年龄问题的探讨

根据团章规定,共青团员的年龄范围为14~28周岁,团员年满28周岁不再担任团内职务,应当办理离团手续。团员是青年中的先进分子,对广大青年起着榜样和激励的作用。而目前对青年的年龄界定上限已延伸至35周岁,团员的年龄范围与青年的界定标准不符,故应当推迟团员离团年龄。但推迟离团工作存在一些利弊,共青团组织要对利弊加以分析、权衡,并做好工作上的应对准备。     

The accuracy and reliability of the Suchey–Brooks pubic symphysis age estimation method: Systematic review and meta-analysis

Suchey–Brooks method has been studied many times with varying reports of accuracy and reliability. A systematic review and meta-analyses were utilized to quantitatively determine the accuracy and reliability of the Suchey–Brooks (S-B) method. A systematic search of PubMed and EBSCO health and medical databases was performed. Meta-analyses were performed to quantify the relationship between actual known age at death and the S-B method using Spearman's Rho and Pearson's r for (1) combined males and females estimates, (2) male-only estimates, and (3) female-only estimates. Overall correlation coefficient using Cohen's kappa, Spearman's Rho, and Pearson's r was also calculated to determine the interrater and intrarater reliability using the S-B method. Eighteen studies classified as moderate-to-high methodological quality met the inclusion criteria. The sample sizes were different for the combined male and female (n = 2620), male-only (n = 2602), and female-only (n = 1431) meta-analyses. The effect size of the age at death meta-analyses was large and significant for combined males and females (Spearman's Rho = 0.62; Pearson's r = 0.65), male-only (Spearman's Rho = 0.77; Pearson's r = 0.75), and female-only (Spearman's Rho = 0.71; Pearson's r = 0.71). The overall correlation coefficients of the interrater (Kappa = 0.76; Spearman's Rho = 0.73; Pearson's r = 0.80) and intrarater (Kappa = 0.81; Spearman's Rho = 0.91; Pearson's r = 0.83) reliability meta-analyses were large and significant. A significant degree of heterogeneity was present in all meta-analyses, with minimal evidence of publication bias. The meta-analyses results suggest the S-B method is highly reliable with a moderate-to-high degree of accuracy. Our results also identified sample size and accuracy differences between male and female individuals.     

Computer Self-Efficacy and e-Government Service Adoption: The Moderating Role of Age as a Demographic Factor

This article investigated the moderating role of age on the positive relationship between computer self-efficacy (CSE) and intention to use e-government services.The Technology Acceptance Model was used as the theoretical framework for this study while the data was analyzed with SPSS. The results showed that age as a demographic factor was significant and positively moderates the impact of CSE on the intention to use e-government services. Also, CSE was a significant predictor of the intention to use but age does not have a direct significant impact on the intention to use. The implications of these findings are discussed.     

Ageing in forensic psychiatric secure settings: the views of members of staff

Background: Although the prevalence of older patients in forensic psychiatric services is increasing, research around service provision for this population is very limited. We aimed to gather the views of members of staff on how well secure services are meeting the challenges of an ageing population.

Methods: Three focus groups were carried out with 13 members of staff working with older patients in secure services. A topic guide, based on the research team’s previous research, guided the sessions. The focus groups were audio-recorded, transcribed and analysed through thematic analysis.

Results: Two themes were identified: (1) Identifying patients’ needs, which focused on how promptly any emerging issues in the older patients are identified and reported; (2) addressing patients’ needs, which focused on how the unique needs of the older patients are addressed, once established.

Conclusions: There are unique age-related issues that may have an impact on the older patients’ opportunities for recovery, including a lack of specialist training for members of staff, prolonged stay in secure care and a limited number of age-relevant activities. Far from optimal, provision requires improvement through the active involvement of the primary stakeholders.     

Radiodense bullet wipe around osseous entrance gunshot wounds

“Bullet wipe” is the material deposited by a bullet on any surface with which it comes into contact after it is fired and may contain debris from the gun barrel, including particles of primer and metal fragments from previously fired bullets. X‐ray analysis is a non‐destructive method by which traces of metallic elements can be visually detected. The analysis of osseous defects for radiodense bullet wipe (RBW) assists in determining the presence or absence of perforating gunshot wounds, especially in fragmented, skeletonized remains. The aim of our current study was to determine the frequency of RBW around entrance firearms injuries that perforated bone. We prospectively analyzed entrance gunshot wounds for RBW over a three‐year period using digital X‐ray analysis (n = 59). We retrospectively reviewed the corresponding autopsy reports to determine the frequency of RBW by biologic sex, reported ancestry, age‐at‐death, location of wound, manner of death, range of fire, bullet caliber, and presence of bullet jacket. Data were analyzed by Fisher's exact test or Chi‐square test with significance levels accepted at p < 0.05. RBW was present in 66% (n = 39) of examined cases. Decedent characteristics did not significantly alter RBW distribution, including biologic sex (p = 0.75), reported ancestry (p = 0.49), and age‐at‐death (p = 0.43). Additionally, the location of the osseous entrance gunshot wound, manner of death, range of fire, and cartridge caliber did not affect RBW detection. All cases involving non‐jacketed rounds (n = 5) showed RBW (p = 0.30). To our knowledge, this study is the first to report the frequency of RBW detection from osseous entrance gunshot wounds.     

论“微时代”背景下“90后”大学生思想政治教育

在＂微时代＂与＂90后时代＂的交叉影响下,＂90后＂大学生群体希望保护别人,使别人受到益处的倾向通过微博的影响力得到彰显,但是其对他人缺乏理解和尊重,成熟度不高这些问题也在＂微时代＂背景下扩大化了。这就对高校思想政治教育工作提出了新的挑战。这就要求高校思想政治教育工作必须坚持以社会主义核心价值体系为指导,以加强大学生思想政治教师队伍建设、发挥大学生主体性和营造健康的校园网络环境为手段进行高校思想政治教育。     

Upon a failure to equal entry and exit wounds: a possible case of tandem bullets in view of the literature

Forensic medicine specialists take account of the projectiles remaining in the body when determining whether there are an equal number of entry and exit wounds. The absence of projectiles should suggest blank cartridges, a single exit wound despite several firings and bullet embolization, whereas the presence of more projectiles than expected may indicate tandem projectiles and multiple projectiles entering through the same hole. Radiological examination of the whole body, follow-up of the bullet trajectories, examination of the clothes, and examination of the gun and projectiles play a key role in solving difficult cases. We review such situations based on a case of tandem bullets. Two 7.65-mm bullets created lethal wounds entering through a 32-year-old victim's neck followed the same trajectory to a certain point and diverted. We discussed the possibilities in cases that show inequalities between entry and exit wounds, in light of relevant literature.     

成像技术用于锁骨年龄推断的研究进展

锁骨内侧端和肩峰端随年龄变化具有一定规律性,尤其是内侧端骨骺愈合程度,对于30岁以下的年龄推断具有重要价值。国内外法医人类学家对锁骨大体解剖及影像特点进行了大量研究,积累了丰富的科研和应用基础。CT和MRI等影像新技术的应用将有望提高锁骨年龄推断的准确性。     

Laminated safety glass as an intermediate target: a wound ballistic study

Various 9‐mm ammunitions (A1, A4, A5, ST, GS, GSb, P.E.P., SeCa, HP, PTP/s, VM, McVG, DM41, PTP, SX2, PT, and MEN frangible) were tested regarding their velocity, energy, angle of impact, and potential wound channel after penetrating a car window at 30° and 90°. Test materials were gelatine, soap, and pig cadavers. The velocities of the projectiles were between c. 288 and 430 m/ses, the energy spread between 394 and 564 J. Handgun bullets fired through vehicular side window glass lose substantial energy reducing the effectiveness of the ammunition. This effect is greater when fired at an angle of 30° compared to 90°. At a shooting angle of 90°, none of the different projectiles showed remarkable differences considering its wound ballistic features. Accuracy is maintained at a 90° angle but seriously impaired at 30°. None of the examined ammunition complied with the demanded wound channel effectiveness of 30–60 J/cm.