Background Sperm DNA fragmentation is known as an important cause of male infertility. The influence of sperm DNA damage on reproductive potential has been subject of many studies indicating various results and remaining the subject controversial. In this study, we investigated differences of the semen parameters and intracytoplasmic sperm injection (ICSI) outcome according to sperm DNA fragmen...

Studying the differences in township gradient of rural construction land structures at microscale is beneficial for adjustment structure based on local conditions and differentiation, classification guidance scientific planning management land, improving level intensive use land. In this study, we took 268 administrative villages Yuzhong County Loess Hilly Region as research object conducted in...

We extend the study of congestion problems to a more realistic scenario, the Road Network Domain (RND), where the resources are no longer independent, but rather part of a network, thus choosing one path will also impact the load of another one having common road segments. We demonstrate the application of state-of-the-art multi-agent reinforcement learning methods for this new congestion model...

We calculate the exact fragmentation functions for c and b quark fragmentation taking into account the spin orientation of the initial heavy quark in the form of analytical and rather simple expressions. Our calculations show that spin orientation may have an important effect on the fragmentation spectrum. This effect is more striking in the cases of c ?D, D*; c? ? , ? , and ?B , B *.

In Computer world Server load balancing is the process of distributing service requests across a group of servers. Users of one workstation are not hindered by the CPU intensive applications run on a different workstation. However, when a large number of machines in the network are idle, the efficiency of computation is decreased. The sharing of computing resources in a distributed system is a ...

Preliminary communication For mobile internet network (Vehicular Ad Hoc Networks, VANET), resources allocation, transportation industry regulations and service business requirements, this paper builds a stable and efficient mobile internet topology and designs multi-radio nodes in vehicle, and then raises the virtual-force oriented ant colony optimization algorithm through primal approach topol...

Solitary bees are important but declining wild pollinators. During daily foraging in agricultural landscapes, they encounter a mosaic of patches with nest and foraging habitat and unsuitable matrix. It is insufficiently clear how spatial allocation of nesting and foraging resources and foraging traits of bees affect their daily foraging performance. We investigated potential brood cell construc...

EEcient path query processing necessary for route guidance has been identiied as one of the key requirements for Intelligent Transportation Systems (ITS) applications. While precomputing the view of all shortest paths provides the most eecient path retrieval, the view maintenance and storage costs become unrealistic for large ITS networks. Based on ITS road type classiication, we propose a hier...