backgrounds and aims: semi automated processes of iranian tire manufacturing factories lead to significant occupational exposures to benzene and toluene compounds. this study was conducted to evaluate the magnitude and risk of workers exposures. materials and methods: personal monitoring of 100 workers (10 groups) was performed using niosh method no.1501 in two tire manufacturing factories in t...

background: epidemiological studies have illustrated that exposure to atmospheric nitrogen oxides (no2/nox) is responsible for an increased risk of acute or chronic diseases such as cancer. in this study the health risks associated with nitrogen dioxide (no2) were assessed in the city of kermanshah, the capital of kermanshah province, iran. methods: data on hourly no2 levels that had been measu...

In this paper we discuss Procedural Reasoning Sys tem PRS as a high level Control and Supervision lan guage adapted to autonomous robots to represent and execute procedures scripts and plans in dynamic envi ronments We discuss the main reasons why PRS is well suited for this type of application The semantics of its plan procedure representation which is important for plan execution and goal re ...

In this paper, we present a gesture recognition system for the development of a human-robot interaction (HRI) interface. Kinect cameras and the OpenNI framework are used to obtain real-time tracking of a human skeleton. Ten different gestures, performed by different persons, are defined. Quaternions of joint angles are first used as robust and significant features. Next, neural network (NN) cla...

The positive and negative effects o f one's school environment (and interracial contact within this environment) have been widely debated. A question o f great concern is whether the racial composition (e. g., school environ ment) o f a school affects one's self-esteem. The presen t study explored whether selfesteem, race-esteem, school commitment, and delinquency differ by the racial compositi...

Local destruction of malignant growths was achieved rapidly by creating around their cells a strongly hypertonic environ ment. Various hexoses, injected in and around tumors at 37°, were utilized to produce the osmotic disturbance. Homeostatic correction of the osmotic disturbance was prevented by local ischemia, induced by vasoconstriction, and maintained soon afterwards by thrombosis. Of the...

This chapter presents the Late Quaternary neo-tectonic movement in the Pearl River Delta (PRD) region of China and its effects on the coastal sedimentary environment. Taking the Xilin Hill fault as the example, we have explained the reason of the PRD formation, inferred its interactions with local/regional climate and sea-level changes, and analyzed the evolution of the PRD formation and its co...