York University

About: York University is a education organization based out in Toronto, Ontario, Canada. It is known for research contribution in the topics: Population & Poison control. The organization has 18899 authors who have published 43357 publications receiving 1568560 citations.

Developing phonological awareness: Is there a bilingual advantage?

Abstract: Three studies are reported that examine the development of phonological awareness in monolingual and bilingual children between kindergarten and Grade 2. In the first study, monolingual and bilingual children performed equally well on a complex task requiring phoneme substitution. The second study replicated these results and demonstrated a significant role for the language of literacy instruction. The third study extended the research by including two groups of bilingual children and a range of phonological awareness and reading tasks. Spanish–English bilinguals performed better than English-speaking monolinguals on a phoneme segmentation task, but Chinese–English bilinguals performed worse. Other measures of phonological awareness did not differ among the three groups. The results are discussed in terms of a limit on the effect that bilingualism exerts on metalinguistic development.

Autonomous Vehicles That Interact With Pedestrians: A Survey of Theory and Practice

Abstract: One of the major challenges that autonomous cars are facing today is driving in urban environments. To make it a reality, autonomous vehicles require the ability to communicate with other road users and understand their intentions. Such interactions are essential between vehicles and pedestrians, the most vulnerable road users. Understanding pedestrian behavior, however, is not intuitive and depends on various factors, such as demographics of the pedestrians, traffic dynamics, environmental conditions, and so on. In this paper, we identify these factors by surveying pedestrian behavior studies, both the classical works on pedestrian–driver interaction and the modern ones that involve autonomous vehicles. To this end, we will discuss various methods of studying pedestrian behavior and analyze how the factors identified in the literature are interrelated. We will also review the practical applications aimed at solving the interaction problem, including design approaches for autonomous vehicles that communicate with pedestrians and visual perception and reasoning algorithms tailored to understanding pedestrian intention. Based on our findings, we will discuss the open problems and propose future research directions.

The Weather Research and Forecasting Model's Community Variational/Ensemble Data Assimilation System: WRFDA

Abstract: Data assimilation is the process by which observations are combined with short-range NWP model output to produce an analysis of the state of the atmosphere at a specified time. Since its inception in the late 1990s, the multiagency Weather Research and Forecasting (WRF) model effort has had a strong data assimilation component, dedicating two working groups to the subject. This article documents the history of the WRF data assimilation effort, and discusses the challenges associated with balancing academic, research, and operational data assimilation requirements in the context of the WRF effort to date. The WRF Model's Community Variational/Ensemble Data Assimilation System (WRFDA) has evolved over the past 10 years, and has resulted in over 30 refereed publications to date, as well as implementation in a wide range of real-time and operational NWP systems. This paper provides an overview of the scientific capabilities of WRFDA, and together with results from sample operation implementations at the U.S. ...

A developmental perspective on bullying

Abstract: ::::::::::::: :::::::::::::::: :::::::::::: In this paper, we examined the forms and relationship contexts of bullying in adolescence. Using cross-sectional data, we assessed grade and sex differences in self-reports of bullying and sexually harassing peers, as well as reports of dating aggression from1896 students from early to late adolescence. Reports of bullying others were highest around the school transition, with lowest levels at the end of high school. Boys reported more bullying and sexual harassment than girls. Sexual harassment of same- and opposite-sex peers increased over the early adolescent years and leveled off in later high-school years. There were no sex differences in the prevalence of indirect or physical aggression with a dating partner. Adolescents who bullied were at increased risk for the other forms of relationship aggression. These data highlight bullying as a relationship problem and point to the need for prevention programs to curtail the use of power and aggression in adolescent relationships. Aggr. Behav. 32:376–384, 2006. r 2006 Wiley-Liss, Inc.

Contracts and Exits in Venture Capital Finance

Abstract: Using a sample of European venture capital (VC) investments, I study the relation between VC contracts and exits. The data indicate that ex ante, stronger VC control rights increase the likelihood that an entrepreneurial firm will exit by an acquisition, rather than through a write-off or an IPO. My findings are robust to controls for a variety of factors, including endogeneity and cases in which the VC preplans the exit at the time of contract choice. My findings are consistent with control-based theories of financial contracting, such as Aghion and Bolton (1992).