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- Wei Wang, Bei Liu, Donghyun Kim, Deying Li, Jingyi Wang, Yaolin Jiang
- 2015 IEEE Conference on Computer Communications…
- 2015

Over years, virtual backbone has attracted lots of attentions as a promising approach to deal with the broadcasting storm problem in wireless networks. One popular way to construct a quality virtual backbone is to solve the minimum connected dominating set problem. However, a virtual backbone computed in this way is not resilient against topology change… (More)

- Donghyun Kim, Zhao Zhang, Xianyue Li, Wei Wang, Weili Wu, Ding-Zhu Du
- IEEE Transactions on Mobile Computing
- 2010

A Virtual Backbone (VB) of a wireless network is a subset of nodes such that only VB nodes are responsible for routing-related tasks. Since a smaller VB causes less overhead, size is the primary quality factor of VB. Frequently, Unit Disk Graphs (UDGs) are used to model 2D homogeneous wireless networks, and the problem of finding minimum VBs in the networks… (More)

- Guobao Sun, Fan Wu, Xiaofeng Gao, Guihai Chen, Wei Wang
- IEEE Trans. Vehicular Technology
- 2013

—Neighbor discovery (ND) is a basic and crucial step for initializing wireless ad hoc networks. A fast, precise, and energy-efficient ND protocol has significant importance to subsequent operations in wireless networks. However, many existing protocols have a high probability of generating idle slots in their neighbor discovering processes, which prolongs… (More)

- Wei Zhang, Zhao Zhang, Wei Wang, Feng Zou, Wonjun Lee
- J. Comb. Optim.
- 2012

- Gang Ding, Yi Liu, +6 authors Songlin Wang
- Stem cells
- 2010

Periodontitis is one of the most widespread infectious diseases in humans. It is the main cause of tooth loss and associated with a number of systemic diseases. Until now, there is no appropriate method for functional periodontal tissue regeneration. Here, we establish a novel approach of using allogeneic periodontal ligament stem cells (PDLSCs) sheet to… (More)

- Donghyun Kim, Wei Wang, Xianyue Li, Zhao Zhang, Weili Wu
- INFOCOM
- 2010

—In this paper, we study the problem of constructing quality fault-tolerant Connected Dominating Sets (CDSs) in homogeneous wireless networks, which can be defined as minimum k-Connected m-Dominating Set ((k, m)-CDS) problem in Unit Disk Graphs (UDGs). We found that every existing approximation algorithm for this problem is incomplete for k ≥ 3 in a sense… (More)

- Wei Wang, Tao Wang, Wan-Yu Feng, Zhan-You Wang, Mao-Sheng Cheng, Yun-Jie Wang
- Neuroscience research
- 2014

Ecdysterone (EDS), a common derivative of ecdysteroid, has shown its effects on alleviating cognitive impairment and improving the cognition and memory. However, the mechanisms remain unknown. Using temporal global forebrain ischemia and reperfusion-induced brain injury as a model system, we investigated the roles of EDS in improving cognitive impairment in… (More)

- Wei Wang, Donghyun Kim, James Willson, Bhavani M. Thuraisingham, Weili Wu
- Discrete Math., Alg. and Appl.
- 2009

Previously, we proposed Minimum Average Routing Path Clustering Problem (MARP-CP) in multi-hop USNs. The goal of this problem is to find a clustering of a USN so that the average clustering-based routing path from a node to it nearest underwater sink is minimized. We relaxed MARPCP to a special case of Minimum Weight Dominating Set Problem (MWDSP), namely… (More)

- Wei Wang, Donghyun Kim, +4 authors Weili Wu
- IEEE/ACM Transactions on Networking
- 2013

In this paper, we study the problem of computing quality fault-tolerant virtual backbone in homogeneous wireless network, which is defined as the <i>k</i>-connected <i>m</i>-dominating set problem in a unit disk graph. This problem is NP-hard, and thus many efforts have been made to find a constant factor approximation algorithm for it, but never succeeded… (More)

- Donghyun Kim, Baraki H. Abay, R. N. Uma, Weili Wu, Wei Wang, Alade O. Tokuta
- INFOCOM
- 2012

—This paper considers the problem of computing the optimal trajectories of multiple mobile elements (e.g. robots, vehicles, etc.) to minimize data collection latency in wireless sensor networks (WSNs). By relying on slightly different assumption , we define two interesting problems, the k-traveling salesperson problem with neighborhood (k-TSPN) and the… (More)