Deep learning for sex determination: Analyzing over 200,000 panoramic radiographs

The objective of this study is to assess the performance of an innovative AI-powered tool for sex determination using panoramic radiographs (PR) and to explore factors affecting the performance of the convolutional neural network (CNN). The study involved 207,946 panoramic dental X-rays and their corresponding reports from 15 clinical centers in São Paulo, Brazil. The PRs were acquired with four different devices, and 58% of the patients were female. Data preprocessing included anonymizing the exams, extracting pertinent information from the reports, such as sex, age, type of dentition, and number of missing teeth, and organizing the data into a PostgreSQL database. Two neural network architectures, a standard CNN and a ResNet, were utilized for sex classification, with both undergoing hyperparameter tuning and cross-validation to ensure optimal performance. The CNN model achieved 95.02% accuracy in sex estimation, with image resolution being a significant influencing factor. The ResNet model attained over 86% accuracy in subjects older than 6 years and over 96% in those over 16 years. The algorithm performed better on female images, and the area under the curve (AUC) exceeded 96% for most age groups, except the youngest. Accuracy values were also assessed for different dentition types (deciduous, mixed, and permanent) and missing teeth. This study demonstrates the effectiveness of an AI-driven tool for sex determination using PR and emphasizes the role of image resolution, age, and sex in determining the algorithm's performance.     

Characterising the psychiatric comorbidities among adults with ADHD who have a history of offending

The prevalence of attention deficit hyperactivity disorder (ADHD) among adult offenders is significantly higher than in the general population. Adults with ADHD often present with multiple psychiatric comorbidities. This study aims to characterise the comorbidities presented by adults with ADHD who have offended and also to investigate predictors of offending among this population. Seventy-three participants with a diagnosis of adult ADHD were divided into a group with a history of offending behaviour (n = 30) and a group of non-offenders (n = 43). Groups were compared on measures of ADHD symptoms, substance use and DSM-IV Axis I and Axis II disorders using the Millon Clinical Multiaxial Inventory – 3rd Edition. Major depression, cannabis use and childhood hyperactivity-impulsivity symptoms predicted offending. These findings indicate that adults with ADHD who have a history of offending behaviour are more likely to present with complex psychiatric needs.     

Offenders as victims: post-traumatic stress disorder and substance use disorder among male prisoners

Background: Comorbid substance use disorder(s) and post-traumatic stress disorder (SUD-PTSD) is common among prisoners and linked to an increased risk of criminal recidivism; however, little is known about the characteristics of prisoners with this comorbidity. Aim: This study provides a preliminary examination of the clinical and criminal profile of male inmates with symptoms of SUD-PTSD, and examines whether this profile differs according to whether a person has experienced a trauma while in prison. Methods: Thirty male inmates from two correctional centres in Sydney, Australia, were recruited and assessed using a structured interview. Results: The sample reported extensive criminal, substance use and trauma histories. A history of substance dependence was almost universal (90%) and 56.7% met diagnostic criteria for PTSD with the remainder experiencing sub-threshold symptoms. Forty-three per cent reported a traumatic event while in prison. Those who had experienced trauma in prison, compared to those who had not, were more likely to nominate heroin as their main drug of concern and to be receiving drug treatment in prison. There was also a trend toward inmates who had experienced a trauma in prison being more likely than inmates who had no prison trauma to have experienced a physical assault. Conclusion: Male prisoners with SUD-PTSD are a high-needs group yet treatment responses are poor. Further research examining treatment options for this comorbidity may improve prisoner well-being and reduce recidivism.     

CONTINUITY / DISCONTINUITY

Starting from issues Wang Hui raises in “The Dialectics of Autonomy and Opening” (Critical Asian Studies 43:2), the authors of this article focus on the problematic coexistence of continuities and discontinuities in modern and contemporary Chinese politics. China's present role in the international scene, they argue, cannot be assessed in terms of economic performance, but requires new perspectives for rethinking the search of China for an original path in domestic politics, as well as the universalistic attitude toward the various forms of thinking coming from all over the world.     

Book reviews

Cook P &; C Kirkpatrick (eds), Privatisation in Developing Countries. International Library of Critical Writings in Economics. Cheltenham: Elgar Reference Collection, 2000. 120pp. ISBN: 1–85898–358–4 (Two volume set).

Entman RM &; A Rojecki, The Black Image in the White Mind: Media and Race in America. Chicago: University of Chicago Press, 2000.305pp. US$26.00. ISBN: 0–26–21075–8.

Jalilian H, Tribe M &; J Weiss (eds), Industrial Development and Policy in Africa. Edward Elgar Publishing, 2000. 292pp. ISBN: 1–84064–120–7

Jing J (ed.), Feeding China's Little Emperors: Food, Children and Social Change. Stanford: Stanford University Press, 2000. 279pp. ISBN: 0–8047–3134–9. US$17.95. http: //www. sup. org

Kleinen J, Facing the Future Reviving the Past: A Study of Social Change in a Northern Vietnamese Village. Singapore: Institute of Southeast Asian Studies, 1999. 239pp. ISBN: 981–230–039–2. US$29.90. http: //www.iseas.edu.sg/pub.html

Kebede JA, The Changing Face of Rural Policy in Tanzania: From Collectivism to Capitalism. London: Minerva Press, 2000. 86pp. ISBN: 07–5410–828–7. £8.99

Lane RE, The Loss of Happiness in Market Democracies . New Haven: Yale University Press, 2000. 465pp. ISBN: 0–300–07801–3. £22.50

Madsen W, Genocide and Covert Operations in Africa : 1993–1999. Lampeter, Ceredigion, Wales: Edwin Mellen Press, 1999. 568pp. ISBN 0–7734–8002–1.

Mankekar P, Screening Culture, Viewing Politics: An Ethnography of Television, Womanhood and Nation in Postcolonial India. Durham and London: Duke University Press. 429pp. 1999. ISBN: 0–8223–2390–7.

Mathoma P, Mills G &; J Stremlau (eds), Putting People First: African Priorities for the UN Millennium Assembly. Johannesburg, SANA, 2000. 129pp. ISBN: 1–919819–14–5

Nurnberger K, Prosperity, Poverty and Pollution: Managing the Approaching Crisis. Cluster Publications, 1999.487pp. ISBN: 1–875053–15–8.

Harvey D, Limits to Capital , Verso, 1999. 478pp. ISBN: 1–85984–714–5

O'Conner JS, Orloff AS &; S Shaver, States, Markets, Families: Gender, Liberalism, and Social Policy in Australia, Canada, Great Britain, and the United States. Cambridge: Cambridge University Press, 1999. 280pp. ISBN: 0–521–63881‐X. £15.95. h ttp: //www. cup. cam.ac.uk

Oi J &; A Walder (eds), Property Rights and Economic Reform in China. Stanford: Stanford University Press, 1999. 354pp. ISBN: 08047–3788–6. £13.95. http: //www.sup.org

Parenti C, Lockdown America: Police and Prisons in the Age of Crisis. London: Verso, 1999. 244pp. ISBN: 1–85984–3034. £15.00

Townsend RF, Agricultural Incentives in Sub‐Saharan Africa: Policy Challenges , World Bank Technical Paper no.444. Washington DC: World Bank, August 1999. ISBN: 0–8213–4528–1. Available from World Bank offices and Oxford University Press.

Verdery K, The Political Lives of Dead Bodies, Reburial and Postsocialist Change. New York: Columbia University Press, 1999. 185pp. ISBN: 0–231–11230–0. US$25.00. http: //www.cc.columbia.edu/cu/cup

Zouev A (ed.) Generation in Jeopardy: Children in Central and Eastern Europe and the former Soviet Union. New York: Unicef, 1999. 206pp. ISBN: 0–7656–0290–3. US$19.95. http: //www.unicef.org     

Perineal‐Vaginal Injuries in Children: Accident or Abuse?

Abstract: A large number of conditions have been mistaken for abuse. Differentiating accidental injuries from inflicted injuries is important in the management of injured children. In this work, the authors describe two cases of accidental perineal‐vaginal injury in children. In case 1, a 4‐year‐old girl suffered a vaginal tear caused by violent stretching during play; in case 2, a 3‐year‐old girl had minor lacerations of labia minora and majora. The intervention of a multi‐specialist team including a forensic pathologist and forensic psychiatrist was the key factor in being able to exclude abuse by third parties in the described cases.. This leads to the appropriate recommendations to be adopted in the forensic medicine setting.     

A Clinical Comparison,Simulation Study Testing the Validity of SIMS and IOP-29 with an Italian Sample

The Inventory of Problems–29 (IOP-29) was recently introduced as a brief, easy-to-use measure of non-credible mental and cognitive symptoms that may be applied to a wide variety of contexts or clinical conditions. The current study compared its validity in discriminating bona fide versus feigned (via experimental malingering paradigm) psychopathology against that of the Structured Inventory of Malingered Symptomatology (SIMS). Specifically, 452 Italian adult volunteers participated in this study: 216 were individuals with mental illness who were asked to take the SIMS and IOP-29 honestly, and 236 were nonclinical participants (experimental simulators) who took the same two tests with the instruction to feign a psychopathological condition. Two main, broad categories of symptom presentations were investigated: (a) psychotic spectrum disorders and (b) anxiety, depression, and/or trauma-related disorders. Data analysis compared the effect sizes of the differences between the patients and experimental simulators, as well as the AUC and classification accuracy statistics for both the SIMS and IOP-29. The results indicate that the IOP-29 outperformed the SIMS, with the differences between the two tools being more notable within the psychotic (IOP-29 vs. SIMS: d?=???1.80 vs. d?=???1.06; AUC?=?.89 vs. AUC?=?.79) than within the anxiety, depression, and/or trauma related subgroup (IOP-29 vs. SIMS: d?=???2.02 vs. d?=???1.62; AUC?=?.90 vs. AUC?=?.86). This study also demonstrates that the IOP-29, with its single cutoff score, is generalizable culturally and linguistically from the USA (English) to Italy (Italian).     

The transition from central planning to a market economy: A computable general equilibrium model

This paper develops a computable general equilibrium (CGE) model of the transition from a central planned economy to a market economy. The model is an extension of Wellisz and Findlay's (1986) model of the Soviet ‘second economy.’ By distinguishing alternative assumptions about the disposition of the government budget, two model variants — the ‘activist’ and ‘non-activist’ — are analyzed. Equilibria of these model variants are computed for various parameter specifications of the Kantorovich ray, which represents the stringency of central planners' direction of the economy. The paper shows that increasing efficiency of the private sector, while it reduces the size of government subsidies to the state sector, does not necessarily increase the net government budget.     

Equity, international trade and climate policy

The literature of welfare-maximising greenhouse gas emission reduction strategies pays remarkably little attention to equity. This paper introduces various ways to consider efficiency and equity simultaneously. Lower (higher) discount rates lead to higher (lower) emission reduction. Higher (lower) inequity aversion leads to higher (lower) emission abatement, unless one also considers the negative effects of OECD emission reduction on the exports of developing countries; in that case, the effect of inequity aversion is ambiguous. In the absence of international co-operation, higher (lower) risk aversion leads to lower (higher) emission abatement. With international co-operation, the effect of risk aversion is ambiguous because the higher risk aversion gives more weight to poorer regions and poorer generations. We analyse four ways to introduce compassion in a non-cooperative setting. If observed development aid is a guide, international altruism is small and has little impact on optimal emission control. If countries act as if they 'feel' but not 'physically experience' the climate impact of the most vulnerable country, optimal emission reduction increases, but not substantially so. However, if countries actually have to pay for the damage done, they would prefer to reduce their emissions to much lower levels. Finally, if countries pay as much for emission reduction as other countries suffer from climate change, (that is, if climate policy restores the income distribution to what it would have been without climate change), emissions are rapidly cut to very low levels.