AIM: To investigate the efficacy of tandospirone in patients with irritable bowel syndrome-diarrhea (IBS-D) and anxiety in a prospective, randomized, controlled study.
Based on the Data Envelopment Analysis method,and by using CCR and BCC model,Super Efficiency model and Malmquist model guided by input efficiency,the input-output efficiency of elements of urban construction land in ...Based on the Data Envelopment Analysis method,and by using CCR and BCC model,Super Efficiency model and Malmquist model guided by input efficiency,the input-output efficiency of elements of urban construction land in different jurisdictions of Beijing from 2005 to 2015 was studied.The results showed that there were obvious differences between input-output efficiency of elements of urban construction land in different jurisdictions of Beijing,among which the efficiency of the core area of capital,Yanqing District,Fangshan District and Huairou District was relatively high,while the efficiency of Daxing District,Fengtai District and Miyun District was relatively low.There was no obvious correlation between efficiency differentiation and location factors,which is mainly caused by whether the land use in each jurisdiction has scale effect,whether the technology is improved,whether the input is redundant and whether the output is insufficient.For the jurisdiction of inefficient land use,we should strengthen the consciousness of intensive land use,improve the technical level,appropriately reduce the redundancy of input elements,and pay attention to the output of social and ecological benefits.展开更多
This study seeks to evaluate the comparative productivity of 32 listed tourism companies which are the main suppliers of China tourism, using the popular methodology known as the data envelopment analysis(DEA). This s...This study seeks to evaluate the comparative productivity of 32 listed tourism companies which are the main suppliers of China tourism, using the popular methodology known as the data envelopment analysis(DEA). This study analyzes the productivity of listed tourism companies from business and region aspects based on the calculation of Malmquist index. The results show that(1) the overall productivity is non-effi cient(0.954);(2) the productivity of accommodation and catering is biggest, which shows the tourism develops quickly with supports from technology;(3) the productivity in western China is highest, where the economy and tourism attraction are better than other regions; and(4) the effi ciency differences among the listed tourism companies are not signifi cant, and they attribute to the scale effi-ciency, that is the input of the fi nance, resource, talents and policy.展开更多
<strong>Objective:</strong> The objective is to explore the long-term efficacy of total enteral nutrition in the treatment of abdominal abscess in Crohn’s disease. <strong>Methods: </strong>Pa...<strong>Objective:</strong> The objective is to explore the long-term efficacy of total enteral nutrition in the treatment of abdominal abscess in Crohn’s disease. <strong>Methods: </strong>Patients treated with EEN in our hospital and whose abdominal abscess disappeared after 12 weeks of treatment were included, and the data of abscess recurrence and surgical treatment during follow-up were included. <strong>Results:</strong> A total of 44 consecutive cases meeting the criteria were included. The 1-year and 2-year recurrence rates were 22.5% and 39.9% respectively. Among the patients with recurrence, 10 patients chose EEN treatment again, and 5 patients received direct surgical treatment. Of the patients who chose to undergo EEN treatment again, 8 still eventually required surgery. The 1-year operative rate was 16.9%, and the 2-year operative rate was 35.6%. The median operative time was 33.3 (95% CI: 21.3, 45.4) months. <strong>Conclusions: </strong>The 2-year cumulative incidence of recurrence of abdominal abscess in CD patients whose abdominal abscess disappeared after EEN was 39.9%, and the 2-year cumulative surgical rate was 35.6%. The operative stomy rate decreased after EEN, and the primary anastomosis rate increased significantly.展开更多
In this paper, we study the efficiency issue of inexact Newton-type methods for smooth unconstrained optimization problems under standard assumptions from theoretical point of view by discussing a concrete Newton-PCG ...In this paper, we study the efficiency issue of inexact Newton-type methods for smooth unconstrained optimization problems under standard assumptions from theoretical point of view by discussing a concrete Newton-PCG algorithm. In order to compare the algorithm with Newton's method, a ratio between the measures of their approximate efficiencies is investigated. Under mild conditions, it is shown that first, this ratio is larger than 1, which implies that the Newton-PCG algorithm is more efficient than Newton's method, and second, this ratio increases when the dimension n of the problem increases and tends to infinity at least at a rate In n/In 2 when n→∞, which implies that in theory the Newton-PCG algorithm is much more efficient for middle- and large-scale problems. These theoretical results are also supported by our preliminary numerical experiments.展开更多
Extensive urban land expansion and heavy industrialization have increased energy consumption and caused environmental problems, both of which present serious threats to humans. Consequently, improved land use efficien...Extensive urban land expansion and heavy industrialization have increased energy consumption and caused environmental problems, both of which present serious threats to humans. Consequently, improved land use efficiency and realization of green development are imperative. Based on a detailed analysis of spatial- temporal evolution of urban land use efficiency, this paper analyzes the synergistic effect of industrial structure and city size, as well as the effect of environmental quality, by using panel data from 283 cities at or above prefecture- level in China from 2003 to 2012. It was concluded that 1） environmental quality has an obvious ＂crowding out effect＂ on urban land use efficiency and 2） urban land use efficiency shows a significant spatial auto-correlation. The effect of industrial structure is dependent on popula- tion size of the city. It has been found that a threshold population size of more than 108.45 （10,000 persons） is needed for an optimized benefit from industrial linkages. The urban population size presents an inverted-U shape against the urban land use efficiency, and the marginal benefit of urban size increases when the industrial structure shifts from secondary industry to tertiary industry. Additionally we found that the actual urban size of 98.2% is less than the cities＇ optimal sizes.展开更多
目的评估传统外剥内扎术、吻合器痔上黏膜环切术(procedure for prolapse and hemorrhoids,PPH)应用于痔患者的效果。方法纳入2015年1月至2023年12月清远市清新区人民医院收治的110例痔患者,遵循随机数表法分为对照组(55例,给予传统手...目的评估传统外剥内扎术、吻合器痔上黏膜环切术(procedure for prolapse and hemorrhoids,PPH)应用于痔患者的效果。方法纳入2015年1月至2023年12月清远市清新区人民医院收治的110例痔患者,遵循随机数表法分为对照组(55例,给予传统手术疗法)、观察组(55例,给予PPH痔疮手术疗法),评价组间临床有效率、围手术期指标、并发症发生情况。结果术后1个月,对照组患者有效1例,治愈52例;观察组有效1例,治愈54例。两组患者的有效率均为100%,差异无显著性(χ^(2)=0.000,P=1.000)。与对照组相比,观察组的术中出血量更少,手术时间、住院时间更短,并发症发生率更低,差异均有显著性(P<0.05)。结论传统外剥内扎术、PPH均能有效治疗痔患者,但是后者更能改善围手术期指标,减少并发症发生率。展开更多
文摘AIM: To investigate the efficacy of tandospirone in patients with irritable bowel syndrome-diarrhea (IBS-D) and anxiety in a prospective, randomized, controlled study.
文摘Based on the Data Envelopment Analysis method,and by using CCR and BCC model,Super Efficiency model and Malmquist model guided by input efficiency,the input-output efficiency of elements of urban construction land in different jurisdictions of Beijing from 2005 to 2015 was studied.The results showed that there were obvious differences between input-output efficiency of elements of urban construction land in different jurisdictions of Beijing,among which the efficiency of the core area of capital,Yanqing District,Fangshan District and Huairou District was relatively high,while the efficiency of Daxing District,Fengtai District and Miyun District was relatively low.There was no obvious correlation between efficiency differentiation and location factors,which is mainly caused by whether the land use in each jurisdiction has scale effect,whether the technology is improved,whether the input is redundant and whether the output is insufficient.For the jurisdiction of inefficient land use,we should strengthen the consciousness of intensive land use,improve the technical level,appropriately reduce the redundancy of input elements,and pay attention to the output of social and ecological benefits.
基金supported by the project of Shaanxi Normal University(Grant No.999521)Xianyang Normal University(Grant Nos.11XSYK316,201002001)
文摘This study seeks to evaluate the comparative productivity of 32 listed tourism companies which are the main suppliers of China tourism, using the popular methodology known as the data envelopment analysis(DEA). This study analyzes the productivity of listed tourism companies from business and region aspects based on the calculation of Malmquist index. The results show that(1) the overall productivity is non-effi cient(0.954);(2) the productivity of accommodation and catering is biggest, which shows the tourism develops quickly with supports from technology;(3) the productivity in western China is highest, where the economy and tourism attraction are better than other regions; and(4) the effi ciency differences among the listed tourism companies are not signifi cant, and they attribute to the scale effi-ciency, that is the input of the fi nance, resource, talents and policy.
文摘<strong>Objective:</strong> The objective is to explore the long-term efficacy of total enteral nutrition in the treatment of abdominal abscess in Crohn’s disease. <strong>Methods: </strong>Patients treated with EEN in our hospital and whose abdominal abscess disappeared after 12 weeks of treatment were included, and the data of abscess recurrence and surgical treatment during follow-up were included. <strong>Results:</strong> A total of 44 consecutive cases meeting the criteria were included. The 1-year and 2-year recurrence rates were 22.5% and 39.9% respectively. Among the patients with recurrence, 10 patients chose EEN treatment again, and 5 patients received direct surgical treatment. Of the patients who chose to undergo EEN treatment again, 8 still eventually required surgery. The 1-year operative rate was 16.9%, and the 2-year operative rate was 35.6%. The median operative time was 33.3 (95% CI: 21.3, 45.4) months. <strong>Conclusions: </strong>The 2-year cumulative incidence of recurrence of abdominal abscess in CD patients whose abdominal abscess disappeared after EEN was 39.9%, and the 2-year cumulative surgical rate was 35.6%. The operative stomy rate decreased after EEN, and the primary anastomosis rate increased significantly.
基金supported by the National Natural Science Foundation of China(Grant No..10371131)the Strategic Research of City University of Hong Kong(Grant No.7001713).
文摘In this paper, we study the efficiency issue of inexact Newton-type methods for smooth unconstrained optimization problems under standard assumptions from theoretical point of view by discussing a concrete Newton-PCG algorithm. In order to compare the algorithm with Newton's method, a ratio between the measures of their approximate efficiencies is investigated. Under mild conditions, it is shown that first, this ratio is larger than 1, which implies that the Newton-PCG algorithm is more efficient than Newton's method, and second, this ratio increases when the dimension n of the problem increases and tends to infinity at least at a rate In n/In 2 when n→∞, which implies that in theory the Newton-PCG algorithm is much more efficient for middle- and large-scale problems. These theoretical results are also supported by our preliminary numerical experiments.
文摘Extensive urban land expansion and heavy industrialization have increased energy consumption and caused environmental problems, both of which present serious threats to humans. Consequently, improved land use efficiency and realization of green development are imperative. Based on a detailed analysis of spatial- temporal evolution of urban land use efficiency, this paper analyzes the synergistic effect of industrial structure and city size, as well as the effect of environmental quality, by using panel data from 283 cities at or above prefecture- level in China from 2003 to 2012. It was concluded that 1） environmental quality has an obvious ＂crowding out effect＂ on urban land use efficiency and 2） urban land use efficiency shows a significant spatial auto-correlation. The effect of industrial structure is dependent on popula- tion size of the city. It has been found that a threshold population size of more than 108.45 （10,000 persons） is needed for an optimized benefit from industrial linkages. The urban population size presents an inverted-U shape against the urban land use efficiency, and the marginal benefit of urban size increases when the industrial structure shifts from secondary industry to tertiary industry. Additionally we found that the actual urban size of 98.2% is less than the cities＇ optimal sizes.
文摘目的评估传统外剥内扎术、吻合器痔上黏膜环切术(procedure for prolapse and hemorrhoids,PPH)应用于痔患者的效果。方法纳入2015年1月至2023年12月清远市清新区人民医院收治的110例痔患者,遵循随机数表法分为对照组(55例,给予传统手术疗法)、观察组(55例,给予PPH痔疮手术疗法),评价组间临床有效率、围手术期指标、并发症发生情况。结果术后1个月,对照组患者有效1例,治愈52例;观察组有效1例,治愈54例。两组患者的有效率均为100%,差异无显著性(χ^(2)=0.000,P=1.000)。与对照组相比,观察组的术中出血量更少,手术时间、住院时间更短,并发症发生率更低,差异均有显著性(P<0.05)。结论传统外剥内扎术、PPH均能有效治疗痔患者,但是后者更能改善围手术期指标,减少并发症发生率。
