The poor opening dynamic characteristics of molten salt check valves, used in concentrating solar thermal systems, constitute the main cause valve disc oscillation and low pressure difference difficulty during delivery. A swing is designed to meet requirements high-temperature high-pressure sealing anti-crystallization flow channels. transient dynamics model motion components established, mesh ...

Muti-channel flat heat pipe is an innovative technology recently used at the rear of photovoltaic cells to absorb and reuse wasted heat. To better understand fundamentals two-phase transfer (boiling condensation) taking place inside multi-channel pipes, a unique three-leg has been built. This one-of-a-kind was develop both computational fluid dynamic (CFD) theoretical models pipe. simulate oper...

recommender systems utilize information retrieval and machine learning techniques for filtering information and can predict whether a user would like an unseen item. user similarity measurement plays an important role in collaborative filtering based recommender systems. in order to improve accuracy of traditional user based collaborative filtering techniques under new user cold-start problem a...

Many data processing systems allow SQL queries that call user-defined functions (UDFs) written in conventional programming languages. While such extensions provide convenience and flexibility to users, involving UDFs are not as efficient their pure counterparts invoke SQL’s highly-optimized built-in functions. Motivated by this problem, we propose a new technique for translating with expression...

a major problem in information retrieval is the difficulty to define the information needs of user and on the other hand, when user offers your query there is a vast amount of information to retrieval. different methods , therefore, have been suggested for query expansion which concerned with reconfiguring of query by increasing efficiency and improving the criterion accuracy in the information...

In this paper among many other things we prove that the topological left amenability and left amenability of a weighted hypergroup (K, ?) are equivalent. For a normal subgroup H of K, we define a weight function ?? on KIH and obtain connection between left amenability of (K, ?) and (K|H, ??). Let H be a compact subhypergroup of K. We define the weight function on K||H and obtain connection...

The vortex-induced force of bridges is not synchronized along the span direction. spatial correlation becomes obvious when bridge structure gradually increases, and mass decreases. Therefore, it important to study spanwise forces long-span ensure accuracy prediction vibration response bridges. established improved theory experimental research methods for analysis large-span by discussing during...