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It has been widely recognized that traditional transaction models with <b>ACID</b>(Atomicity, Consistency, Isolation and Durability) properties generally are not applicable to cooperative applications. Though many advanced transaction models have been proposed to address the problems, they are too database-centered or too rigid to be useful in real(More)
Process programming is regarded as a critical approach in many cooperative process related areas including software engineering, workflow management, business process management, etc. Many process models, languages, and corresponding runtime support systems have been developed. We argue that a comprehensive library for process programming is essential for(More)
Process technologies play an increasingly important role as the world is being digitalized in nearly every corner. The major obstacles to their massive deployment include reusability and adaptivity. This paper addresses the two crucial problems with one single solution: process inheritance. We discuss what process inheritance is, what mechanisms are needed(More)
Concurrency control has always been one of the most important issues in the design of synchronous groupware systems with fully-replicated architecture. An ideal strategy should be able to support natural and flexible human-to-computer and human-to-human interactions while maintaining the consistency of the system. This paper summarizes previous researches(More)
Friction stir lap welding of 7B04 aluminum alloy was conducted in the present paper, and the effect of welding speed on the defect features and mechanical performance of lap joints was investigated. The results indicate that the hook defect at the advancing side (AS) can reduce the effective thickness of the top sheet, and the sheet thinning level is(More)
Location information is a valuable tool in personal communication systems, especially considering the wide variety of communication mechanisms that are available and affordable today. Users can easily access different types of networks (e.g., the public switched telephone network (PSTN), cellular networks and Internet Protocol (IP) networks), and they can(More)
BACKGROUND To study the effect of estrogen-related receptor α (ERRα) and peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α) on mesenchymal stem cells (MSCs) apoptosis, and further investigated its detailed molecular mechanisms in the absence of serum, hypoxia, and high glucose conditions. MATERIAL AND METHODS In our study, we first(More)