Modeling biological face recognition with deep convolutional neural networks

Deep convolutional neural networks (DCNNs) have become the state-of-the-art computational models of biological object recognition. Their remarkable success has helped vision science break new ground and recent efforts have started to transfer this achievement to research on biological face recognition. In this regard, face detection can be investigated by comparing face-selective biological neurons and brain areas to artificial neurons and model layers. Similarly, face identification can be examined by comparing in vivo and in silico multidimensional "face spaces". In this review, we summarize the first studies that use DCNNs to model biological face recognition. On the basis of a broad spectrum of behavioral and computational evidence, we conclude that DCNNs are useful models that closely resemble the general hierarchical organization of face recognition in the ventral visual pathway and the core face network. In two exemplary spotlights, we emphasize the unique scientific contributions of these models. First, studies on face detection in DCNNs indicate that elementary face selectivity emerges automatically through feedforward processing even in the absence of visual experience. Second, studies on face identification in DCNNs suggest that identity-specific experience and generative mechanisms facilitate this particular challenge. Taken together, as this novel modeling approach enables close control of predisposition (i.e., architecture) and experience (i.e., training data), it may be suited to inform long-standing debates on the substrates of biological face recognition.Comment: 41 pages, 2 figures, 1 tabl

Impact of lockdown measures on joint music making : playing online and physically together

A wide range of countries decided to go into lockdown to contain the COVID-19 pandemic of 2020, a setting separating people and restricting their movements. We investigated how musicians dealt with this sudden restriction in mobility. Responses of 234 people was collected. The majority of respondents (95%) resided in Belgium or The Netherlands. Results indicated a decrease of 79% of live music making in social settings during lockdown compared to before lockdown. In contrast, an increase of 264% was demonstrated for online joint music making. However, results showed that most respondents were largely or even completely unaccustomed with specialized platforms for online joint music making (e.g., JamKazam, Jamulus). Respondents reported to mostly use well known video conferencing platforms such as Zoom and Skype when playing together virtually. However, when such general video conferencing platforms were used, they were often not employed for synchronized playing and were generally reported to insufficiently deal with latency issues. Furthermore, respondents depending on music making as their main source of income explored online methods significantly more than those relying on other income sources. Results also demonstrated an increase of 93% in the use of alternative remote joint music making methods (e.g., recording parts separately and subsequently circulating these digital recordings). All in all, results of this study provide a more in-depth view on joint music making during the first weeks of lockdown induced by the COVID-19 pandemic of 2020, and demonstrate users’ perception of performance and usability of online platforms as well as alternative methods for musical interaction

Does Stable Housing Predict Extended Sobriety?

This study will examine adults in the Miami Valley area who have been treated for substance abuse. Using an explanatory quasi-experimental post-test design, we will explore participants’ length of housing and sobriety through a one page survey. Data will be imputed and assessed through SPSS. We will use frequency distributions and measures of central tendency to describe the sample. We will also run an independent t-test to determine differences between stable housing and length of sobriety. We anticipate findings will indicate adults who attain stable housing with have extended sobriety. Implications, limitations, and suggestions for future research will be discussed

Consequences of anxiety in older persons: its effect on disability, well-being and use of health services

Background. Although anxiety is quite prevalent in late life, its impact on disability, well-being, and health care utilization of older persons has not been studied. Older persons are a highly relevant age group for studying the consequences of anxiety, since their increasing numbers put an extra strain on already limited health care resources. Methods. Data of a large community-based random probability sample (N = 659) of older subjects (55-85 year) in the Netherlands were used to select three groups: subjects with a diagnosed anxiety disorder, subjects with merely anxiety symptoms and a reference group without anxiety. These groups were compared with regard to their functioning, subjective well-being, and use of health care services, while controlling for potentially confounding variables. Results. Anxiety was associated with increased disability and diminished well-being. Older persons with a diagnosed anxiety disorder were equally affected in their functioning as those with merely anxiety symptoms. Although use of health services was increased in anxiety sufferers, their use of appropriate care was generally low. Conclusions. Anxiety has a clear negative impact on the functioning and well-being of older subjects. The similarity of participants with an anxiety disorder and those having merely anxiety symptoms regarding quality of life variables and health care use was quite striking. Finally, in spite of its grave consequences for the quality of life, appropriate care for anxiety is seldom received. Efforts to improve recognition, disseminate effective treatments in primary care, and referring to specialized care may have positive effects on the management of anxiety in late life

Dissociative style and directed forgetting.

Dissociative style may correspond to an enhanced ability to avoid conscious recollection of traumatic experiences, which may, however, remain dormant in nonconscious memory. This hypothesis was tested in two "directed-forgetting" experiments with affectively neutral words (experiment 1) and sex and threat words (experiment 2) employing a total of 83 first-year psychology students high and low in dissociative style, and 14 dissociative patients. Conscious and nonconscious memory were separated with the process dissociation procedure (L. L. Jacoby, 1991). Instruction to forget was expected to reduce conscious but to enhance nonconscious memory performance in Ss with a high dissociative ability. Results were opposite to predictions. Particularly for sex words, the instruction to forget raised the overall (conscious and nonconscious) memory performance of the patients. An alternative construction hypothesis is proposed that identifies dissociative style with enhanced skills of constructing conscious experiences

Care Works: Come Home for Care

Essential to executing the mission and vision of an academic medical center (AMC) is attracting and retaining the highest quality employees. As demonstrated by VCU’s commitment to the Great Place Initiative, the University has recognized that employees in today’s highly competitive environment demand competitive salary and benefit packages. Research has shown that access to high quality, on-site healthcare services provides significant benefits to both employees and employers, such as increased productivity and reduced wellness costs[1]. Yet, a query of de-identified patient records indicated that only a small percentage of VCU employees (~18%) utilized the health services provided by VCU Health System in 2016. VCU’s peer-institutions, other distinguished AMCs, and industry employers have implemented a variety of programs such as concierge services, expedited appointments, on-campus clinics, and lower copays to remain competitive and responsive to their employees. In light of the depth of these programs, Team CareWorks completed a comparative review of health and wellness related employee-specific benefits to determine how VCU might enhance its benefits through initiatives such as on-site medical clinics, prioritized appointments, telehealth, and on-site pharmacies. Informed by the comparative analysis, Team CareWorks will provide recommendations that VCU can use to: capitalize on the integrated relationship with VCU Health to enrich the health and wellness of its outstanding assets (the employees); and provide enhanced benefits to employees by making VCU Health more easily accessible and more appealing as a Medical Home. [1]Berry, Leonard, Ann M. Mirabito, & William B. Baun. “What\u27s the Hard Return on Employee Wellness Programs?” (2010). Harvard Business Review, December 2010.. Available at SSRN: https://ssrn.com/abstract=206487

The epidemiology of gonorrhoea, chlamydial infection and syphilis in four African cities.

OBJECTIVES: To compare the epidemiology of gonorrhoea, chlamydial infection and syphilis in four cities in sub-Saharan Africa; two with a high prevalence of HIV infection (Kisumu, Kenya and Ndola, Zambia), and two with a relatively low HIV prevalence (Cotonou, Benin and Yaoundé, Cameroon). DESIGN: Cross-sectional study, using standardized methods, including a standardized questionnaire and standardized laboratory tests, in four cities in sub-Saharan Africa. METHODS: In each city, a random sample of about 2000 adults aged 15-49 years was taken. Consenting men and women were interviewed about their socio-demographic characteristics and their sexual behaviour, and were tested for HIV, syphilis, herpes simplex virus type 2 (HSV-2), gonorrhoea, chlamydial infection, and (women only) Trichomonas vaginalis infection. Risk factor analyses were carried out for chlamydial infection and syphilis seroreactivity. RESULTS: The prevalence of gonorrhoea ranged between 0% in men in Kisumu and 2.7% in women in Yaoundé. Men and women in Yaoundé had the highest prevalence of chlamydial infection (5.9 and 9.4%, respectively). In the other cities, the prevalence of chlamydial infection ranged between 1.3% in women in Cotonou and 4.5% in women in Kisumu. In Ndola, the prevalence of syphilis seroreactivity was over 10% in both men and women; it was around 6% in Yaoundé, 3-4% in Kisumu, and 1-2% in Cotonou. Chlamydial infection was associated with rate of partner change for both men and women, and with young age for women. At the population level, the prevalence of chlamydial infection correlated well with reported rates of partner change. Positive syphilis serology was associated with rate of partner change and with HSV-2 infection. The latter association could be due to biological interaction between syphilis and HSV-2 or to residual confounding by sexual behaviour. At the population level, there was no correlation between prevalence of syphilis seroreactivity and reported rates of partner change. CONCLUSION: Differences in prevalence of chlamydial infection could be explained by differences in reported sexual behaviour, but the variations in prevalence of syphilis seroreactivity remained unexplained. More research is needed to better understand the epidemiology of sexually transmitted infections in Africa

Finite Approximations to Quantum Physics: Quantum Points and their Bundles

There exists a physically well motivated method for approximating manifolds by certain topological spaces with a finite or a countable set of points. These spaces, which are partially ordered sets (posets) have the power to effectively reproduce important topological features of continuum physics like winding numbers and fractional statistics, and that too often with just a few points. In this work, we develop the essential tools for doing quantum physics on posets. The poset approach to covering space quantization, soliton physics, gauge theories and the Dirac equation are discussed with emphasis on physically important topological aspects. These ideas are illustrated by simple examples like the covering space quantization of a particle on a circle, and the sine-Gordon solitons.Comment: 24 pages, 8 figures on a uuencoded postscript file, DSF-T-29/93, INFN-NA-IV-29/93 and SU-4240-55

Electron-radiation interaction in a Penning trap: beyond the dipole approximation

We investigate the physics of a single trapped electron interacting with a radiation field without the dipole approximation. This gives new physical insights in the so-called geonium theory.Comment: 12 pages, RevTeX, 6 figures, Approved for publication in Phys. Rev.