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This paper proposes a novel methodological framework for effectively measuring the production frontier performance (PFP) of macro-scale (regional or national) R&D activities themselves associated with two improved models: a non-radial data envelopment analysis (DEA) model and a nonradial Malmquist index. In particular, the framework can provide(More)
The formation, evolution, and dynamics of Industry–University–Research Institute (IUR) scientific collaborations in China have not been uncovered fully in extant literature. This study seeks to fill this research gap based on a novel sample of the China Academy of Sciences (CAS) from an ego-network perspective and especially reveals the guiding role of(More)
OBJECTIVES We examined the relationships between screen time (ST) and mental health problems and also increment of ST and progression of mental health problems in a college-based sample of Chinese youth. METHODS We assessed 2521 Chinese college freshmen from October 2013 to December 2014. At baseline, the mean age of participants was 18.43 years (SD 0.96(More)
How to effectively make an international comparison of the basic research capacity in a specific field is an urgent problem for a country to monitor the science and technology activities. In this paper, we develop a composite index, that is, Basic Research Competitiveness Index (BR-CI), for evaluating the countries’ basic research performance versus the(More)
Purpose. This study was aimed at investigating the effect of esmolol on tissue perfusion and the clinical prognosis of patients with severe sepsis. Materials and Methods. One hundred fifty-one patients with severe sepsis were selected and divided into the esmolol group (n = 75) or the control group (n = 76), who received conventional antiseptic shock(More)
In recent years, sediment scour near bridge piers and abutment is a serious problem which cause nationwide concern because it has resulted in more bridge failures than other causes. After this question arose, more and more numerical analyses about this problem have been carried out. In this study, computational model simulations using a 3D Computational(More)
The system of gas collector pressure of coke ovens has the characters of many coupling, strong interference, time varying, and nonlinearity, the effectiveness of the traditional PID control for gas collector pressure of coke ovens is difficult to reach the perfection. Combined the technology of fuzzy control with the conventional technology of PID control,(More)
PURPOSE Whether neoadjuvant chemotherapy (NCT) followed by concurrent chemoradiotherapy (CCRT) could improve survival in nasopharyngeal carcinoma (NPC) remains controversial especially in the era of intensity-modulated radiation therapy (IMRT), and we explored the role of NCT for NPC patients. PATIENTS AND METHODS A retrospective review was conducted of(More)
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