Jianjiang Li

Learn More
We present a scalable spatial decomposition coloring approach to implement molecular dynamics simulations with embedded atom method (EAM) on multi-core architectures. It effectively solves parallelization of reduction operations on irregular arrays in molecular dynamics simulations. In OpenMP program model, our methodology avoids that the same memory(More)
Different from the traditional topic detection and tracking (TDT) technologies primarily focus on detecting topic in local network domain, this paper proposes a cooperative alert topic detection model in distributed environment (named CATDM). The model abstracts the alert topic and represents it as the local alert case by analyzing the alert of campus(More)
Message-passing is a predominant programming paradigm for distributed memory systems. RDMA networks like infiniBand and Myrinet reduce communication overhead by overlapping communication with computation. For the overlap to be more effective, we propose a source-to-source transformation scheme by automatically restructuring message-passing codes. The(More)
Aiming at the deficiencies of traditional blog hotness evaluation methods, the paper presents a blog hotness evaluation model based on text opinion analysis (named BHEM-TOA). The model not only considers the number of reviews, comments and publication time of the blog topic, but also focuses on the comment opinion. BHEM-TOA emphasizes subjective opinions of(More)
At present, MapReduce is the most popular programming model for Big Data processing. As a typical open source implementation of MapReduce, Hadoop is divided into map, shuffle, and reduce. In the mapping phase, according to the principle moving computation towards data, the load is basically balanced and network traffic is relatively small. However, shuffle(More)
Highly ordered Ni nanotube and nanowire arrays were fabricated via electrodeposition. The Ni microstructures and the process of the formation were investigated using conventional and high-resolution transmission electron microscope. Herein, we demonstrated the systematic fabrication of Ni nanotube and nanowire arrays and proposed an original growth(More)