We extend the common theme of random Apollonian packing of circles to consider orientable grains with a noncircular shape. Systems of up to 10(6) grains are examined for a range of polygonal and elliptical shapes using both the random Apollonian packing model and the new rotational random Apollonian packing model which takes into account the extra rotational degree of freedom of noncircular gra...

Ductile compaction is common in many natural systems, but the temporal evolution of such systems is rarely studied. We observe surprising oscillations in the weight measured at the bottom of a self-compacting ensemble of ductile grains. The oscillations develop during the first ten hours of the experiment, and usually persist through the length of an experiment (one week). The weight oscillatio...

Situation awareness is an important factor in the incidence of industrial accidents. Improving situation awareness may help to prevent occupational accidents. Determination of factors influencing the situation awareness will help to plan and implement the measures for improving working conditions and making a safer workplace. In this study, was examined the role of work overload and sleepiness ...

Received Jan 12 th , 2013 Revised Feb 1 st , 2013 Accepted Feb 26 th , 2013 In automated overload control system, it is difficult to accurately predict the condition of high performance server. Overload Control mechanism mostly depend on the accuracy of detection and prediction. Therefore, it is important to accurately determine whether a server is or is not in overload state. So we can prevent...

Abstract Background: Iron overload is a clinical consequence of repeated blood transfusions and causes significant organ damage, morbidity, and mortality in the absence of proper treatment. The primary targets of Iron chelators used for treating transfusional Iron overload are the prevention of Iron ingress into tissues and its intracellular scavenging. The present study was aimed at elucid...

BACKGROUND Fluid overload, including transfusion-associated circulatory overload (TACO), is a serious complication of fresh frozen plasma (FFP) transfusion. The incidence of fluid overload is underreported and its economic impact is unknown. An evaluation of fluid overload cases in US hospitals was performed to assess the impact of fluid overload on length and cost of hospital stay. STUDY DES...

In an always connected communication environment, users of social networking services (SNSs) need to pay continuous attention to the overwhelming volume of social demands from SNSs. These increased energy requirements may cause SNS fatigue, which can lead to physical and psychological strain. Using the transactional theory of stress and coping as the overarching theory, this study regards overl...

The article analyzes theoretical and experimental studies of intelligent mechanism designs, considers the advantages using mechanisms for agricultural machines in comparison with traditional structural schemes. principle operation an presented form two differential drives is considered. Planetary this type are systems or more degrees freedom terms number connections, therefore, one leading link...