Upper gastrointestinal haemorrhage (UGIH) remains a common medical emergency worldwide. It is increasingly recognised that early risk assessment is an important part of management, which helps direct appropriate patie...Upper gastrointestinal haemorrhage (UGIH) remains a common medical emergency worldwide. It is increasingly recognised that early risk assessment is an important part of management, which helps direct appropriate patient care and the timing of endoscopy. Several risk scores have been developed, most of which include endoscopic findings, although a minority do not. These scores were developed to identify various end-points including mortality, rebleeding or clinical intervention in the form of transfusion, endoscopic therapy or surgery. Recent studies have reported accurate identification of a very low risk group on presentation, using scores which require simple clinical or laboratory parameters only. This group may not require admission, but could be managed with early out-patient endoscopy. This article aims to describe the existing pre- and post-endoscopy risk scores for UGIH and assess the published data comparing them in the prediction of outcome. Recent data assessing their use in clinical practice, in particular the early identification of low-risk patients, are also discussed.展开更多
An optimal layout or three-dimensional spatial distribution of stopes guarantees the maximum profitability over life span of an underground mining operation.Thus,stope optimization is one of the key areas in undergrou...An optimal layout or three-dimensional spatial distribution of stopes guarantees the maximum profitability over life span of an underground mining operation.Thus,stope optimization is one of the key areas in underground mine planning practice.However,the computational complexity in developing an optimal stope layout has been a reason for limited availability of the algorithms offering solution to this problem.This article shares a new and efficient heuristic algorithm that considers a three-dimensional ore body model as an input,maximizes the economic value,and satisfies the physical mining and geotechnical constraints for generating an optimal stope layout.An implementation at a copper deposit demonstrates the applicability and robustness of the algorithm.A parallel processing based modification improving the performance of the original algorithm in terms of enormous computational time saving is also presented.展开更多
In this paper, we conduct research on the gender discrimination phenomenon and the primary cause in English and Chinese language. Language is a social phenomenon, so the restriction of the society but the culture is t...In this paper, we conduct research on the gender discrimination phenomenon and the primary cause in English and Chinese language. Language is a social phenomenon, so the restriction of the society but the culture is the foundation of the survival and development of human society cannot leave the culture at the same time. Due to physiological differences, men in the social practice play a more important role than woman burdened with a family. We analyze the gender discrimination phenomenon from different unique perspective to eventually understand the mechanism. In the future, we will combine the literature review to modify our proposed methodology.展开更多
An old tradition of designing with nature had existed for thousands of years in ancient China. In order to achieve ideal living environment, people believed that they should use, repair, and improve the nature in an a...An old tradition of designing with nature had existed for thousands of years in ancient China. In order to achieve ideal living environment, people believed that they should use, repair, and improve the nature in an active but abstemious way, and a complete system of design theories and techniques gradually developed. The intellectual architects, in particular, pioneered the practical and theoretical developments, especially those in Tang dynasty made extraordinary contributions. Among them, Yuan lie （元结） and Liu Zongyuan （柳宗元） were particularly outstanding. They had different experiences but similar achievements in Yongzhou area, which was a remote, less-developed region but with beautiful landscapes. In this paper, the planning and design practices of these two intellectual architects were examined and compared. Their principles and methods of Design With Nature were summarized. Also, the historical influence of their works and its contemporary value were briefly discussed at last.展开更多
文摘Upper gastrointestinal haemorrhage (UGIH) remains a common medical emergency worldwide. It is increasingly recognised that early risk assessment is an important part of management, which helps direct appropriate patient care and the timing of endoscopy. Several risk scores have been developed, most of which include endoscopic findings, although a minority do not. These scores were developed to identify various end-points including mortality, rebleeding or clinical intervention in the form of transfusion, endoscopic therapy or surgery. Recent studies have reported accurate identification of a very low risk group on presentation, using scores which require simple clinical or laboratory parameters only. This group may not require admission, but could be managed with early out-patient endoscopy. This article aims to describe the existing pre- and post-endoscopy risk scores for UGIH and assess the published data comparing them in the prediction of outcome. Recent data assessing their use in clinical practice, in particular the early identification of low-risk patients, are also discussed.
文摘An optimal layout or three-dimensional spatial distribution of stopes guarantees the maximum profitability over life span of an underground mining operation.Thus,stope optimization is one of the key areas in underground mine planning practice.However,the computational complexity in developing an optimal stope layout has been a reason for limited availability of the algorithms offering solution to this problem.This article shares a new and efficient heuristic algorithm that considers a three-dimensional ore body model as an input,maximizes the economic value,and satisfies the physical mining and geotechnical constraints for generating an optimal stope layout.An implementation at a copper deposit demonstrates the applicability and robustness of the algorithm.A parallel processing based modification improving the performance of the original algorithm in terms of enormous computational time saving is also presented.
文摘In this paper, we conduct research on the gender discrimination phenomenon and the primary cause in English and Chinese language. Language is a social phenomenon, so the restriction of the society but the culture is the foundation of the survival and development of human society cannot leave the culture at the same time. Due to physiological differences, men in the social practice play a more important role than woman burdened with a family. We analyze the gender discrimination phenomenon from different unique perspective to eventually understand the mechanism. In the future, we will combine the literature review to modify our proposed methodology.
文摘An old tradition of designing with nature had existed for thousands of years in ancient China. In order to achieve ideal living environment, people believed that they should use, repair, and improve the nature in an active but abstemious way, and a complete system of design theories and techniques gradually developed. The intellectual architects, in particular, pioneered the practical and theoretical developments, especially those in Tang dynasty made extraordinary contributions. Among them, Yuan lie （元结） and Liu Zongyuan （柳宗元） were particularly outstanding. They had different experiences but similar achievements in Yongzhou area, which was a remote, less-developed region but with beautiful landscapes. In this paper, the planning and design practices of these two intellectual architects were examined and compared. Their principles and methods of Design With Nature were summarized. Also, the historical influence of their works and its contemporary value were briefly discussed at last.
