J effrey sachs is an economist, not an evangelist. But give the man 10 minutes behind a microphone, and a scholarly symposium starts to feel like a revival meeting. “Ladies and gentlemen,” he tells a hushed hall after describing how AIDS sufferers die in Malawi for want of $1-a-day drugs, “this plague is exploding. Its consequences will make the world quake. Rich countries could stop the devast...

OBJECTIVE The prevalence, persistence, and desistance of boys' physical fighting was examined over a 7-year period. The importance of persistent physical fighting compared with other risk factors in the prediction of later mental health problems was explored. METHOD One hundred seventy-seven boys, aged 7 to 12 years, who had been referred to clinics for mental health problems were followed up...

As for multi-uninhabited aerial vehicle cooperative fire fighting problem, a multiuninhabited aerial vehicle cooperative control method was proposed based on consensus algorithm. multi-uninhabited aerial vehicle cooperative control problem was divided into two steps: 1) a multi-uninhabited aerial vehicle arrival simultaneous control strategy under influence of wind field based on consensus algo...

OBJECTIVES Physical fighting is a behaviour of concern that puts adolescents at increased risk for injury. The study objectives were to: 1) describe current patterns of physical fighting and fighting-related injury among Canadian adolescents, and 2) investigate potential trends in fighting and fighting-related injuries during the period 1993-2010. METHODS Canadian data from cycles 2-6 (1993-2...

Along with its methodological development, authorship analysis has expanded in scope to new application areas like authorship profiling and computational sociolinguistics as well as conventional ones like authorship attribution. For these new applications, providing a new interpretation of text through the textual characteristics is as important as improving the classification performance betwe...

The electrochemical oxidation behaviors of NaBH4 on Zn, Zn–MH, and MH (metal-hydride) electrodes were investigated, and an intrinsic direct orohydride fuel cell (DBFC)/battery hybrid power source using MH (or Zn–MH) as the anode and MnO2 as the cathode was tested. Borohydride annot be effectively oxidized on Zn electrodes at the Zn oxidation potential because of the poor electrocatalytic abilit...

Abstract: This paper investigates the detection and classification of fighting and pre and post fighting events when viewed from a video camera. Specifically we investigate normal, pre, post and actual fighting sequences and classify them. A hierarchical AdaBoost classifier is described and results using this approach are presented. We show it is possible to classify pre-fighting situations usi...

OBJECTIVE Using nationally representative data, this study examined the prevalence of very frequent physical fighting (≥12 times per year) among youth in 27 countries and cities. Frequent physical fighting has rarely been reported in the previous literature despite the implications for research and practice. METHODS Analyses were based on the Global School-based Student Health Survey (2003-20...

Play fighting is common in juvenile mammals as a peri-pubertal form of agonistic behavior preceding adult aggressive behavior. In golden hamsters, play fighting peaks in early puberty around postnatal day 35 (P-35), and gradually matures into adult aggression in late puberty. Though extensively studied, the neural mechanisms underlying play fighting remains poorly understood. My dissertation fo...