In this paper, we describe a field study with a tour guide robot that guided visitors through a historical site. Our focus was to determine how a robot’s orientation behaviour influenced visitors’ orientation and the formations groups of visitors formed around the robot. During the study a remotecontrolled robot gave short guided tours and explained some points of interest in the hall of Festiv...

Through competition for pollinators, invasive plants may suppress native flora. Community-level studies provide an integrative assessment of invasion impacts and insights into factors that influence the vulnerability of different native species. We investigated effects of the nonnative herb Lythrum salicaria on pollination of native species in 14 fens of the eastern United States. We compared v...

Since its founding a decade ago, Environmental Health has received more than one thousand manuscripts. Last year marked the first time we published over 100 articles. The journal web site currently receives over 60,000 unique visitors every month, and the steady increase suggests that the number will soon exceed 100,000 monthly. Individual articles are usually accessed several thousand times wi...

Chimpanzees in laboratory colonies experience more wounds on weekdays than on weekends, which has been attributed to the increased number of people present during the week; thus, the presence of more people was interpreted as stressful. If this were also true for primates in zoos, where high human presence is a regular feature, this would clearly be of concern. Here we examine wounding rates in...

INTRODUCTION Workplace violence against nurses is a serious problem. Nurses from a US urban/community hospital system employing more than 5,000 nurses researched the incidence of workplace violence against nurses perpetrated by patients or visitors in their hospital system. METHODS Survey research and retrospective database review methods were used. Nurse participants (all system-employed nur...

In this paper we design the low-power CMOS limiting amplifier using negative impedance, the purpose of using negative impedance is to increase the gain of the amplifier. low-power operations are also done using all the active elements. The LA was implemented in a standard CMOS 0.18um technology. This limiting amplifier is designed for the instrumentation(bio-medical) application. Gain of the am...

Transmission of organisms within the hospital setting has become a topic of major concern not only for patients and healthcare facilities but also for government agencies and the general public. This increased awareness has occurred in part due to the spread of organisms that have limited treatment options, such as carbapenem-resistant Enterobacteriaceae (CRE), as well as the heightened recogni...

Even though. since the 1970s,Auschwitl has eclipsed Dachau as the most widely recognized symbol of Nazi atrocities, the Dachau concentration camp museum remains by far the most visited original site associated with Nazi Germany. With the annual number of visitors rising from ca. 100,000 in the early 19505 to peak at just under 1 million in the late 19805. the Dachau memorial site museum ranks a...

In object-oriented programming the visitor design pattern allows for the addition of new operations on a data hierarchy, but lends itself to scattered traversal code and makes visitors difficult to combine. Previous attempts to solve these issues have separated traversal code from the data structure but still face a lack of modularity in visitor computation making it difficult– if not impossibl...

The objectives of this study are to determine the visitors’ willingness to pay for conservation of the resources at Gunung Gede Pangrango National Park (TNGP), and to determine the satisfaction of visitors towards the use of the ecotourism resources of the park. The dichotomous choice Contingent Valuation Method (CVM) was employed to determine the willingness to pay (WTP). A total of 423 respon...