This study aims at identifying the differences of crash characteristics at basic segments between urban and intercity expressways. Crash rate (CR) model is firstly developed as a function of traffic density. The causes leading to different CR characteristics by expressway type are then examined considering the interaction of geometry, traffic flow and ambient conditions. Affecting mechanisms of...

Safety and security are key aspects for the success of tourism in every destination. Rather than objective risks, it is rather the tourist's individual and subjective perception of these risks that mostly infl uence destination choice and in the long run tourism fl ows from one country to another. Th e concept of risk perception has been highly studied in tourism, however the literature remains...

A survey programme was initiated several years ago with the aim of estimating the incidence of naturally occurring radioactive material (NORM) exposure for workers in the oil and gas industry, gold mining, spas, and a tourist cavern in Argentina. This work presents the procedures, methods employed, and results to date from the survey, including protection and remedial actions recommended when d...

the host plant quality not only influences on herbivorous insects but also indirectly could impact on their natural enemies’ performance. the current study was conducted to determine the effect of different nitrogen fertilization levels of canola (brassica napus l.) on life table parameters of the predatory gall midge, aphidoletes aphidimyza rondani; diptera: cecidomyiidae, in feeding of mustar...

Plant infectious Agrobacteria harbor large plasmids Ti or Ri (about 200 kb), which induce crown gall or hairy root syndromes, respectively. These plasmids have three important functional regions, transfer DNA (T-DNA) region, virulence (Vir) region and conjugation transfer (Tra) region. The T-DNA region is integrated into plant chromosomes, and the subsequent expression of its plant growth hormo...

Chloroflexus aurantiacus J-10-f1 is an anoxygenic, photosynthetic, facultative autotrophic gram negative bacterium found from hot spring at a temperature range of 50-60°C. It can sustain itself in dark only if oxygen is available thereby exhibiting a dark orange color, however display a dark green color when grown in sunlight. Genome of the organism contains total of 3853 proteins out ...

In the process of studying the number of tourist arrivals of each moment on every day, one of the key findings is a very good statistical regularity about tourist total arrivals. There exists high similarity among different scales of tourist arrivals, including the nearly same change trend. And on this basis this paper puts forward a new method of modeling and forecasting real-time tourist arri...