In this paper we propose a Filter-based Uniform Algorithm （FbUA） for optimizing top-κ query in distributed networks, which has been a topic of much recent interest. The basic idea of FhUA is to set a filter at each...In this paper we propose a Filter-based Uniform Algorithm （FbUA） for optimizing top-κ query in distributed networks, which has been a topic of much recent interest. The basic idea of FhUA is to set a filter at each node to pre vent it from sending out the data with little chance to contrib ute to the top-κ result. FbUA can gain exact answers to top-κ query through two phrases of round trip communications between query station and participant nodes. The experiment results show that FbUA reduces network bandwidth consumption dramatically.展开更多
The top-down and bottom-up are two main approaches used in teaching extensive reading and both of them should be used alternatively so that students can not only understand the details but also the main ideas of readi...The top-down and bottom-up are two main approaches used in teaching extensive reading and both of them should be used alternatively so that students can not only understand the details but also the main ideas of reading materials.The importance of using top-down approach is emphasized and some suggestions are given on the problem that students pay so much attention on vocabulary and grammar rather than main idea in reading.展开更多
基金Supported by the National Natural Science Foun-dation of China (60503036 ,60473073) Fok Ying Tong EducationFoundation (104027)
文摘In this paper we propose a Filter-based Uniform Algorithm （FbUA） for optimizing top-κ query in distributed networks, which has been a topic of much recent interest. The basic idea of FhUA is to set a filter at each node to pre vent it from sending out the data with little chance to contrib ute to the top-κ result. FbUA can gain exact answers to top-κ query through two phrases of round trip communications between query station and participant nodes. The experiment results show that FbUA reduces network bandwidth consumption dramatically.
文摘The top-down and bottom-up are two main approaches used in teaching extensive reading and both of them should be used alternatively so that students can not only understand the details but also the main ideas of reading materials.The importance of using top-down approach is emphasized and some suggestions are given on the problem that students pay so much attention on vocabulary and grammar rather than main idea in reading.
