Correlation versus causation in multisensory perception

This research was supported in part by an Innovational Research Incentive Scheme Veni Grant awarded to A.J. by the Netherlands Organization for Scientific Research (NWO). The authors thank Sabrina Jung for help with the preparation of the materials and Lies Cuijpers for help with conducting the experiments.Events are often perceived in multiple modalities. The co-occurring proximal visual and auditory stimuli events are mostly also causally linked to the distal event, which makes it difficult to evaluate whether learned correlation or perceived causation guides binding in multisensory perception. Piano tones are an interesting exception: They are associated with the act of the pianist striking keys, an event that is visible to the perceiver, but directly results from hammers hitting strings, an event that typically is not visible to the perceiver. We examined the influence of seeing the hammer or the keystroke on auditory temporal order judgments (TOJs). Participants judged the temporal order of a dog bark and a piano tone, while seeing the piano stroke shifted temporally relative to its audio signal. Visual lead increased “piano-first” responses in auditory TOJ, but more so if the associated keystroke was visible than if the sound-producing hammer was visible, even though both were equally visually salient. This provides evidence for a learning account of audiovisual perception.peer-reviewe

Evaluation of the Jim Joseph Foundation Education Initiative Year 3 Report

Launched in 2010, the Jim Joseph Foundation Education Initiative supports programs at three flagship Jewish institutions of higher education: Hebrew Union College-Jewish Institute of Religion (HUC-JIR), Jewish Theological Seminary (JTS), and Yeshiva University (YU). As part of this initiative, HUC-JIR, JTS, and YU designed and piloted new programs, enhanced existing programs, and provided financial assistance to additional programs.American Institutes for Research (AIR) is conducting an independent evaluation of the Jim Joseph Foundation Education Initiative. This report is the third in a series of five annual reports that describe progress toward accomplishing the goals of the Education Initiative

Ideals with Larger Projective Dimension and Regularity

We define a family of homogeneous ideals with large projective dimension and regularity relative to the number of generators and their common degree. This family subsumes and improves upon constructions given in [Cav04] and [McC]. In particular, we describe a family of three-generated homogeneous ideals in arbitrary characteristic whose projective dimension grows asymptotically as sqrt{d}^(sqrt(d) - 1).Comment: 10 pages. This work was completed at the MRC for Commutative Algebra in Snowbird, UT, which was generously supported by the AM

Efficient Hierarchical Domain Adaptation for Pretrained Language Models

The remarkable success of large language models has been driven by dense models trained on massive unlabeled, unstructured corpora. These corpora typically contain text from diverse, heterogeneous sources, but information about the source of the text is rarely used during training. Transferring their knowledge to a target domain is typically done by continuing training in-domain. In this paper, we introduce a method to permit domain adaptation to many diverse domains using a computationally efficient adapter approach. Our method is based on the observation that textual domains are partially overlapping, and we represent domains as a hierarchical tree structure where each node in the tree is associated with a set of adapter weights. When combined with a frozen pretrained language model, this approach enables parameter sharing among related domains, while avoiding negative interference between unrelated ones. Experimental results with GPT-2 and a large fraction of the 100 most represented websites in C4 show across-the-board improvements in-domain. We additionally provide an inference time algorithm for a held-out domain and show that averaging over multiple paths through the tree enables further gains in generalization, while adding only a marginal cost to inference.Comment: NAACL 2022 accepted paper camera ready versio

The Intersection of Exploitation and Coercion in Cases of Canadian Labour Trafficking

Internationally, human trafficking intervention, research, and policy-making has leaned towards sex trafficking rather than labour trafficking. Aiming to understand the characteristics of labour trafficking within Canada, a country considered by many to have strong labour protections and clear pathways for labour migration, this article reports on a review of documented cases over the past fifteen years in Canada where labour exploitation intersected with coercion. Our analysis is centred on the notion that this is the crux of what constitutes labour trafficking—coercion being used to facilitate labour exploitation. In total, we collected thirty-six cases, involving an estimated 243 victims, and we placed these within a matrix that crosses gradations of labour exploitation (deception, labour standard violations, and occupational health and safety (OHS) violations) with gradations of coercion (from systemic to direct). We collected these cases through a scan of media, governmental, academic, and legal sources. A new contribution to the literature, this exploitation-coercion matrix helps to highlight limitations in current approaches to the identification and response to labour trafficking in Canada. Our study results demonstrate: 1) the degree to which precarious immigration status is central to labour trafficking; 2) that this trafficking is frequently practised by small business owners in legal employment sectors; and 3) that there is a high presence of men and low presence of minors as victims. These findings contrast with the archetypal portraits found in much of the trafficking media and literature of the trafficking victim as young and female and the trafficker as organized criminal

Internet and Social Media Access Among Youth Experiencing Homelessness: Mixed-Methods Study.

BACKGROUND: Youth experiencing homelessness are at a risk for a variety of adverse outcomes. Given the widespread use of the internet and social media, these new technologies may be used to address their needs and for outreach purposes. However, little is known about how this group uses these resources. OBJECTIVE: This study investigated how homeless adolescents use these technologies for general and health-related purposes, whether the scope of their use changes with housing status, and their interest in a website dedicated to youth experiencing homelessness. METHODS: A convenience sample of youth aged 18 to 21 years was recruited from a youth-specific homeless shelter. All participants completed a 47-item survey, with 10 individuals completing a semistructured interview. Descriptive statistics, exact testing, logistic regression, and generalized estimating equation modeling was performed for quantitative data analysis. Interviews were transcribed verbatim, and NVivo 10 (QSR International) was employed to facilitate double coding and thematic analysis. RESULTS: A total of 87 participants completed the survey with a mean age of 19.4 (SD 1.1) years. While experiencing homelessness, 56% (49/87) accessed the internet at least once a day, with 86% (75/87) accessing once a week. Access to a smartphone was associated with a 3.03 greater odds of accessing the internet and was the most frequently used device (66% of participants, 57/87). While experiencing homelessness, subjects reported a 68% decreased odds in internet access frequency (odds ratio [OR] 0.32, P\u3c.001), 75% decreased odds in spending greater amounts of time on the internet (OR 0.25, P\u3c.001), and an 87% decreased odds of social media use (OR 0.13, P=.01). Ten participants completed the semistructured interview. Several themes were identified, including (1) changes in internet behaviors while experiencing homelessness, (2) health status as a major concern and reason for Internet use, and (3) interest in a website dedicated to youth experiencing homelessness. While experiencing homelessness, participants indicated their behaviors were more goal-oriented and less focused on leisure or entertainment activities. CONCLUSIONS: While homeless youth experience changes in the frequency, amount of time, and specific uses of the internet and social media, study participants were able to access the internet regularly. The internet was used to search health-related topics. Given the importance of smartphones in accessing the internet, mobile-optimized websites may be an effective method for reaching this group

Exploring students’ and employers’ perspectives of creativity in STEM

Creativity is known to have an impact on innovation and advancements in new technology with the goal to benefit society. Creativity allows exploration of new ideas and inventions which is present in great findings within Science, Technology, Engineering and Mathematics (STEM). To inspire new generations of brilliant and innovative scientists, this study aims to further the research conducted into the relationship creativity has with STEM education and employment. This presentation will describe students’ and employers’ perceptions of creativity. Self-reflective, introspective surveys were distributed to first-, second- and third-year undergraduate chemistry, mathematics and engineering students, as well as pre-service teachers and employers. Semi-structured interviews were also conducted with undergraduate students. Likert scale survey questions were analysed using Remark Office and SPSS. Short answer survey questions and interview questions were analysed using content analysis to identify common themes. Some commonly identified themes for students’ definition of creativity include novelty of ideas, unique ideas, innovation, thinking outside the box and imagination. Students believe that links exist between creativity and job retention, promotion and attainment. They also believe that employers view creativity as important, but not as important as other skills. Some mismatches between student perceptions and employer perspectives were also found. By inspecting trends in students’ perceptions and comparing these to employers’ perspectives, it is possible to identify what changes (if any) need to be made to the education system to meet employers’ expectations. This may allow creative students to be prominent when transitioning into the workforce, encouraging future advancements in STEM as an industry

Use of nonintrusive sensor-based information and communication technology for real-world evidence for clinical trials in dementia

Cognitive function is an important end point of treatments in dementia clinical trials. Measuring cognitive function by standardized tests, however, is biased toward highly constrained environments (such as hospitals) in selected samples. Patient-powered real-world evidence using information and communication technology devices, including environmental and wearable sensors, may help to overcome these limitations. This position paper describes current and novel information and communication technology devices and algorithms to monitor behavior and function in people with prodromal and manifest stages of dementia continuously, and discusses clinical, technological, ethical, regulatory, and user-centered requirements for collecting real-world evidence in future randomized controlled trials. Challenges of data safety, quality, and privacy and regulatory requirements need to be addressed by future smart sensor technologies. When these requirements are satisfied, these technologies will provide access to truly user relevant outcomes and broader cohorts of participants than currently sampled in clinical trials

Taking Streets Seriously

In many parts of Gauteng, streets are congested with cars, trucks, minibus taxis, pedestrians, and informal traders. In other parts, streets are quiet, underutilised and frequently underserviced. The surface quality of the city-region’s streets varies widely – from the engineering marvel of the Gauteng Freeway Improvement Project to those (relatively few) remaining gravel or dirt roads. Besides these contrasts, there are many other degrees of quality by which Gauteng’s streets vary. In some parts of Gauteng, streets have become privatised or heavily securitised. The phenomenon of ‘gated’ communities either manifests as enclosed streets within private estates or as closed-off existing public-road networks in older suburban areas. Some streets are patrolled by security guards, lined with high walls and electric fences, and surveyed by CCTV cameras. In busy areas, informal traders sell their wares on the pavement or at traffic lights, adding to the congestion on narrow sidewalks. These activities are subject to varying levels of control and police harassment, where by-laws dictating the use of roads and pavements are haphazardly enforced, with trading goods or café tables randomly confiscated across the city. And, like many other features of the urban environment, the quality of Gauteng’s streets is highly uneven. This Research Report, ‘Taking Streets Seriously’, interrogates how what is considered good urban design and liveability of streets may shift in different contexts. Through a series of case studies it attempts to understand the various logics at play in Gauteng’s streets – not only the logics of their designers, builders or managers, but also of those who inhabit, use, or otherwise interact with them. The studies unearthed a complex interplay of actors on Gauteng streets, with street users, property owners and the state each operating according to their own, diverse agendas, contingent on the particular street in question. The result is streets that are chaotic, contested, and changing over time. It is fair to say that, with only a few exceptions, Gauteng’s streets were and continue to be designed with hostility or a studied disregard towards anyone not behind a steering wheel. Yet despite the dominance of cars, pedestrian activities do proliferate. While indubitably car-centric, they are nonetheless sites of diverse and vibrant 'non-motorised' life. This vibrancy is no thanks to those who constructed and now control our streets. Non-car users have only made their mark by contesting the territory of the street using a variety of tactics. With this Research Report, we hope to prompt a re-imagination of our streets, not least as streets rather than roads, but also as public spaces. Streets comprise by far the majority of public space in contemporary Gauteng, where other forms, such as plazas and parks, are woefully inadequate. Streets taken seriously – not by users, who have little choice, but by their designers, planners, and managers – have enormous potential to enable and encourage public life in Gauteng’s cities. Conversely, streets that are poorly made or neglected outright can constrain both the society and economy of a city. Ultimately, we hope to correct an official urban discourse that overlooks the many uses to which streets are and could be put. In a time of enormous excitement and corresponding investment in our cities, we would like to see some of both these factors directed towards the (re)development of our streets.AP201

EFFECTS OF FATIGUE ON RUGBY PLACE KICKING TECHNIQUE AND PERFORMANCE

The aim of this study was to identify differences in place kicking performance and technique following a rugby-specific fatigue protocol. Three skilled place kickers performed four blocks of the protocol, between which they took three place kicks from a challenging pitch location. The success of the kicks, measures of physical exertion and lower body and torso kinematic variables were measured. Kicking success dropped following blocks 2 and 4 of the protocol, all missed kicks were wide of the goalposts. Individual differences were apparent. After block 2 the kickers demonstrated greater upper body motion, potentially a strategy to obtain fast foot velocity but at a detriment to accuracy. After block 4, collapse of the stance leg was observed which may have impacted the kickers’ stability. Further research with more participants and a specific focus on muscular fatigue is required