introduction: traffic accidents are the 8 th cause of mortality in different countries and are expected to rise to the 3 rd rank by 2020. based on the haddon matrix numerous factors such as environment, host, and agent can affect the severity of traffic-related traumas. therefore, the present study aimed to evaluate the effective factors in severity of these traumas based on haddon matrix. meth...

a variety of group 4 metal catalytic systems (c2-symmetric {ebthi}-, {sbi}-type zirconocene complexes (c2-1–4); c1-symmetric (c1-5–8) and cs-symmetric (cs-9) {cp/flu}-type zirconocene complexes; cp*2zrcl2 (cp* 2-10)), half-metallocene complexes (cpticl3, hm-11), constrained-geometry (cgc-12) titanium catalysts) and post-metallocene catalysts (dow’s ortho-metallated amido-pyridino hafnium comple...

The driving mechanism of an axisymmetric vectoring exhaust nozzle (AVEN) is a 3-degrees-of-freedom (3-DOF) parallel manipulator (PM) with centering device. According to the characteristics nozzle’s movement mechanism, 3-DOF kinematics model 3SPS + 3PRS PM established. forward and inverse positional posture models are built based on architecture closed-loop vector method. Jacobian matrix Hessian...

With the arrival of multi-cores, every processor has now built-in parallel computational power and that can be fully utilized only if the program in execution is written accordingly. This study is a part of an on-going research for designing of a new parallel programming model for multi-core processors. In this paper we have presented a combined parallel and concurrent implementation of Lin-Ker...

We consider the problem of multi-track string matching. The task is to find the occurrences of a pattern across parallel strings. Given an alphabet Σ of natural numbers and a set S over Σ of h strings si = s1 · · · s i n for i = 1, . . . , h, a pattern p = p1 · · · pm has such an occurrence at position j of S if p1 = s i1 j , p2 = s i2 j+1, . . . , pm = s im j+m−1 holds for i1, . . . , im ∈ {1,...

A high performance communication facility, called the GigaE PM, has been designed and implemented for parallel applications on clusters of computers using a Gigabit Ethernet. The GigaE PM provides not only a reliable high bandwidth and low latency communication function, but also supports existing network protocols such as TCP/IP. In the design of the GigaE PM, it is assumed that a Gigabit Ethe...

The Load Rebalancing Problem (LRP) that reassigns tasks to processors so as to minimize the maximum load arises in the context of dynamic load balancing. Many applications such as on Web based environment, parallel computing on clusters can be stated as LRP. Solving LRP successfully would allow us to utilize resources better and achieve better performance. However LRP has been proven to be NP-h...

Although poor for small dynamic scales, the Particle–Mesh (PM) model allows in astrophysics good insight for large dynamic scales at low computational cost. Furthermore, it is possible to employ a very high number of particles to get high mass resolution. These properties could be exploited by suitable parallelization of the algorithm. In PM there are two types of data: the particle data, i.e. ...

Parallel manipulators are well known for their superior stiffness, higher accuracy, lower inertia and faster response compared to the serial counterparts and hence is widely used for high-speed machining and heavy load applications. However, controller limitations as well as design constraints can result in un-optimized designs causing unsettling residual vibrations at the end effector and limi...

In 2004, the first American Heart Association scientific statement on "Air Pollution and Cardiovascular Disease" concluded that exposure to particulate matter (PM) air pollution contributes to cardiovascular morbidity and mortality. In the interim, numerous studies have expanded our understanding of this association and further elucidated the physiological and molecular mechanisms involved. The...