高校篮球训练课学生快速回防意识的培养策略

“防守是最好的进攻”,就是通过不懈努力来化解对手的进攻势头,因此这句话在篮球赛场上依然适用,并且被很多知名篮球运动员和教练员视为真理,快速回防意识则是防守能力和防守态度的直观体现,能够关乎到篮球比赛的走势。因此,在篮球专项训练中,快速回防意识的训练必须作为一项重要的工作,高校篮球训练课也不例外,必须提高学生快速回防意识培养的重视程度。该文就在高校篮球训练中积极培养学生快速回防意识的基础上,将高校篮球训练课有效培养学生快速回防意识的关键点加以深入分析,最终围绕“向学生明确积极防守在篮球比赛中的重要性”“细致讲述最佳的回防路线和延误对手进攻的原则”“以趣味游戏的形式带动学生积极参与后场防守”“通过科学的训练评价来指导学生形成快速回防意识”4个方面,将最为行之有效的培养策略加以论述,旨在为广大高校篮球教练员开展日常训练工作带来一定启发。

对急性胰腺炎患者出院后的回访探索

目的:探讨对急性胰腺炎患者出院后的回访。方法:将80例急性胰腺炎患者随机分为观察组和对照组,各40例。观察组采用出院指导后进行定期回访,对照组采用出院指导后不进行回访。结果:观察组复发率低于对照组,2组差异有统计学意义(P<0.05)。结论:对急性胰腺炎患者出院后进行定期回访是降低急性胰腺炎复发率的有效途径,值得临床进一步推广应用。

云南战场与滇南抗战

抗日战争时期,有一个“云南战场”,包括滇南抗战(战场)和滇西抗战(战场)两大部分。滇西战场没有人否认,滇南战场却鲜为人知。滇南战场形成于1940年日军入侵印度支那、逼近滇越边境之际。在滇南危急时刻,云南省内积极动员抗敌之际,滇军在华东、华中之主力紧急回防,组建滇南作战军,沿用第一集团军名义,后改称滇越边区总司令部,再组建第一方面军,在中央军的配合下,与日军在滇越边境对峙。国民政府入滇参谋团制定了较完善的滇南防守计划。同时与日军争夺对滇越铁路的控制权。滇南战场进行了周密的兵力部署,实施完善的整训措施,坚持抗战,终于拒敌于国门之外,不让日军跨过滇越边境一步,取得了滇南抗战的胜利。

浅析篮球防守有球掩护的延误配合

本文提出了不同传统破坏掩护配合的防守配合，针对目前NBA大量运用，经过实践及目前的进攻掩护配合的形势提出了新的防守配合策略及方法，同时介绍了有球延误配合的具体方法及其重要性。

Living alone, health and preventive care use among the elderly in Shanghai, China

Objective:The purpose of the study was to compare the preventive care use and health between the elderly living alone and living with other individuals and identify strategies to improve the preventive care use among the elderly living alone.Methods:A questionnaire including socioeconomic characteristics,preventive care use,health status and Social Support Rate Scale was administered to 240 elderly living alone and 244 elderly living with other individuals in Shanghai,China.Logistic regression analysis was used to examine the predictors of preventive care use.Results:The elderly living alone were more likely to be single(never married,divorced,separated and widowed),have lower social support and income,utilize less routine physical check-up and blood glucose screenings,have worse self-reported health and have limitations in IADL compared to the elderly living with other individuals.Women,old age,high education,income and social support and close to medical institutions were positively associated with routine physical check-up among the elderly.Conclusion:Living alone was associated with less preventive care use and worse health.It was important to provide more social support and economic support for the elderly living alone to increase their preventive health care service utilization and improve their health status.

GROUNDWATER QUALITY AND CONTAMINATION INDEX MAPPING IN CHANGCHUN CITY,CHINA

Groundwater in Changchun City, Jilin Province of China tends to be influenced by human activities. Chemical types of groundwater were detected in both shallow and deep groundwater were: HCO3--Ca2+ and HCO3--Ca2+·Mg2+ or HCO3--Mg2+·Ca2+; SO42--Ca2+ and SO42--Ca2+·Mg2+; Cl--Ca2+; and CO32--Na+. The deteriorations of groundwater quality due to the increase of TDS, NO3-+ NO2-(as Nitrogen) and TH contents have been observed from 1991 to 1998. Scatter analyses showed strong positive correlations between Ca2+, Cl-and NO3-ions and weak negative correlations between the depth of water table and Ca2+, SO42-, Cl-and NO3-ions. A mapping of contaminant index based on Chinese standard of groundwater showed that a large proportion of the groundwater in 1998 was deteriorated by human process. Despite their low values of sodium adsorption ratio (SAR), the most of the sampled wells were not suitable for drinking and agriculture purposes due to higher contents of NO3-, NO2-and Mn2+ ions.

Crashworthiness optimization design of foam-filled tapered decagonal structures subjected to axial and oblique impacts

In this research,crashworthiness of polyurethane foam-filled tapered decagonal structures with different ratios of a/b=0,0.25,0.5,0.75 and 1 was evaluated under axial and oblique impacts.These new designed structures contained inner and outer tapered tubes,and four stiffening plates connected them together.The parameter a/b corresponds to the inner tube side length to the outer tube one.In addition,the space between the inner and outer tubes was filled with polyurethane foam.After validating the finite element model generated in LS-DYNA using the results of experimental tests,crashworthiness indicators of SEA(specific energy absorption)and Fmax(peak crushing force)were obtained for the studied structures.Based on the TOPSIS calculations,the semi-foam filled decagonal structure with the ratio of a/b=0.5 demonstrated the best crashworthiness capability among the studied ratios of a/b.Finally,optimum thicknesses(t1(thickness of the outer tube),t2(thickness of the inner tube),t3(thickness of the stiffening plates))of the selected decagonal structure were obtained by adopting RBF(radial basis function)neural network and genetic algorithm.

Prognostic value of body mass index before treatment for laryngeal squamous cell carcinoma

Objective: Patients with head and neck cancer often suffer from malnutrition. This study aims to investigate the influence of body mass index(BMI) on the prognosis of laryngeal squamous cell carcinoma(LSCC).Methods: A total of 473 patients with LSCC initially treated at Sun Yat-sen University Cancer Center between January 2005 and July 2009 were retrospectively reviewed. Survival analysis was performed by the Kaplan-Meier method and Cox regression model.Results: Low BMI before treatment was significantly associated with poor overall survival in patients with LSCC(P<0.001). BMI was an independent prognostic factor for patients with LSCC.Conclusion: Leanness before treatment was associated with poor prognosis in patients with LSCC. Good nutritional status is favorable to improve survival in patients with LSCC.