Weiwei Chen

Simulation is one of the most popular evaluation methods in scientific workflow studies. However, existing workflow simulators fail to provide a framework that takes into consideration heterogeneous system overheads and failures. They also lack the support for widely used workflow optimization techniques such as task clustering. In this paper, we introduce WorkflowSim, which extends the existing CloudSim simulator by providing a higher layer of workflow management. We also indicate that to ignore system overheads and failures in simulating scientific workflows could cause significant inaccuracies in the predicted workflow runtime. To further validate its value in promoting other research work, we introduce two promising research areas for which WorkflowSim provides a unique and effective evaluation platform.

Rapid socioeconomic progress has greatly affected the lifestyle in China. Consequently, owing to lifestyle changes, urbanization, and accelerated population aging, the risk of cardiovascular diseases (CVD) has increased. The incidence of CVD has been increasing continuously and this upward trend is projected to continue in the next decade. The growing burden of CVD has become a major public health issue. Accordingly, since 2005, the National Center for Cardiovascular Diseases of China has directed experts in cardiology, neurology, nephrology, diabetes, epidemiology, community healthcare, health economics, biostatistics, and other related fields to prepare the annual Report on Cardiovascular Diseases in China. This report aims to provide a timely review of the growing epidemic of CVD in the country as well as to assess the progress made in its prevention and control. We present herein an updated summary of the Report on Cardiovascular Diseases in China 2018 that includes trends in CVD, the morbidity and mortality of CVD, risk factor assessment, health resources for CVD, and a profile of medical expenditure.

Assessment of Screen

Intangible cultural heritage has the characteristics of regionality, uniqueness, and liveness. Its protection and inheritance are faced with many challenges, and can be resolved by integrating with the scenic areas. The construction of digital scenic areas is an effective way to achieve a win-win situation. Based on resource characteristics and market positioning analysis of the Celadon Cultural Industrial Park, the construction objectives and coping strategies of the scenic area are proposed by systematically introducing the digital technology in the scenic area planning, project initiation, tourism management model, and other aspects to create a culture-first, three-dimensional virtual reality scenic area.