My research interest is to solve problems from mathematics and physics with simple and clean ideas, and along the way to learn and to find new mathematical structures and theories. Localization techniques in various settings, combining with various subjects of mathematics, have played central roles in my researches. See my ICM lecture [38] for more detailed discussions. I divide my past researc...

Titanium is an ideal material for use in prosthodontics because of its biocompatibility, corrosion resistance, and mechanical strength combined with its lightweight. Recently the use of titanium and titanium alloys for fixed restorations has increased substantially, mainly due to the improvement of techniques for the casting titanium and its alloys. This article reviewed the studies on titanium...

Enterprise Resource Planning (ERP) systems can be considered as the most important development in the corporate use of information technology (IT) and are beginning to be the backbone of organisations. The difficulties and high failure rate in implementing ERP systems have been widely cited in the literature. Factors affecting ERP implementation are complex and abundant and numerous authors hav...

Increased demand for Wireless Sensor Networks(WSNs) in fields such as the military, ecological survey and health related areas which deals with sensitive information has imposed the overhead of security in such networks. Attacks on wireless sensor networks have justified the importance of security in this field. Constraints on memory, computation, energy and transmission range associated with W...

A graph is supereulerian if it has a spanning Eulerian subgraph. Motivated by the Chinese Postman Problem, Boesch, Suffel, and Tindell ([2]) in 1997 proposed the supereulerian problem, which seeks a characterization of graphs that have spanning Eulerian subgraphs, and they indicated that this problem would be very difficult. Pulleyblank ([71]) later in 1979 proved that determining whether a gra...

Lung diseases are the deadliest disease in the world. The computer aided detection system in lung diseases needed accurate lung segmentation to preplan the pulmonary treatment and surgeries. The researchers undergone the lung segmentation need a deep study and understanding of the traditional and recent papers developed in the lung segmentation field so that they can continue their research jou...

Provision of seamless service to multimedia applications in cellular wireless networks largely depends on the way calls are handled during handoff. Hence, sufficient resources must be provided for handoff (HO) connections when a mobile station (MS) moves from one cell to another. Effective allocation of resources can be achieved when the exact future trajectory of MSs is known in advance. Howev...

Recently, with the rapid development and implementation of wireless medical sensors has gained increasing popularity. Monitor and record some vital parameters of patients are of importance to know the patient’s health condition. But malicious attacks happen occasionally, which may cause the patient-related data being leaked or modified. In this study, we made a survey about some researches in t...