城市型、应用型大学建设中关于体育教育改革的探索

我国高等教育正在经历由大众化教育向普及化教育的过渡阶段,出现了办学模式多样化的格局,城市型、应用型大学应势而生。高校体育在增强学生体质、掌握运动技能之余,其体育精神和规则意识在培养学生团队合作能力、挑战精神、实践能力和适应能力等方面均有明显的效果。通过教学改革,把体育育人功能贯彻到人才培养体系中,势必能够让体育教育成为城市型、应用型大学人才培养环节中的重要一环。     

Risk Analysis of Information System Security Based on Distance of Information-State Transition

The configuration of information system security policy is directly related to the information asset risk, and the configuration required by the classified security protection is able to ensure the optimal and minimum policy in the corresponding security level. Through the random survey on the information assets of multiple departments, this paper proposes the relative deviation distance of security policy configuration as risk measure parameter based on the distance of information-state transition (DIT) theory. By quantitatively analyzing the information asset weight, deviation degree and DIT, we establish the evaluation model for information system. With example analysis, the results prove that this method conducts effective risk evaluation on the information system intuitively and reliably, avoids the threat caused by subjective measurement, and shows performance benefits compared with existing solutions. It is not only theoretically but also practically feasible to realize the scientific analysis of security risk for the information system.     

LaAlO_3/GaAs异质结界面的空穴导电行为分析

采用脉冲激光沉积方法在GaAs(001)单晶基片上生长LaAlO_3薄膜构成LaAlO_3/GaAs异质结,利用原子力显微镜和XRD对LaAlO_3/GaAs异质结进行表征,并通过PPMS对LaAlO_3/GaAs异质结进行面内电阻和霍尔电阻测试,研究其界面电输运性能。结果表明,LaAlO_3在GaAs表面生长均匀,LaAlO_3/GaAs异质结界面处存在空穴型的导电行为,且该空穴来源于界面处的悬空键效应。     

Development of high-strength,low-cost wrought Mg–2.0 mass% Zn alloy with high Mn content

Mg–Zn–Mn-based alloys have received considerable attention because of their high creep resistance, strength,and good corrosion resistance. The alloying element Mn in Mg–Zn-based alloys is commonly less than 1 wt%. In the present study, the effect of high Mn content(1 wt% and 2 wt%) on the microstructures and mechanical properties of Mg–2Zn–0.3Sr extruded alloy was investigated. The results revealed that the high Mn content significantly increased the ultimate tensile strength, tensile yield strength, compress yield strength, and yield asymmetry of the alloy without affecting its ductility. The dynamically recrystallized(DRXed) grains of Mg–2Zn–0.3Sr were remarkably refined because of the large amount of fine Mn precipitates in the homogenized alloy. The improved strengths were mainly attributed to the fine DRXed grains according to the Hall–Petch effect and to the large amount of spherical and 0001 Mn precipitates through the precipitation and dispersion strengthening. The fine DRXed grains and numerous Mn precipitates effectively suppressed the extension twining, substantially enhanced the compress yield strength, and resulted in improved anisotropy.     

基于SWOT分析的增强河南农村发展活力战略选择

本文采用SWOT分析方法,分析了河南农村发展在自然资源、区位、人力资源、市场广阔潜力大和龙头企业不断壮大的优势,在农民素质不高、农民经济权益难保障、金融供需不平衡、科技支撑不足和农村经济体制不健全上的劣势,党和政府的支持、金融改革、劳动力"回流"趋势、新型城镇化推进和"互联网+农业"发展方面提供的机遇,劳动力流失严重、农村生态环境问题突出和国际市场的威胁方面造成的威胁。然后利用SWOT矩阵分析结果提出增强河南农村发展活力的对策。     

铁焦初始反应温度影响因素分析

通过在炼焦配煤中分别添加加拿大BLC、澳大利亚FMC和中国鄂西铁矿粉炼制铁焦,研究添加铁矿粉的种类及配比、入炉煤的性质和堆积密度等对铁焦初始反应温度的影响。结果表明,在配煤中添加10%铁矿粉所制铁焦的初始反应温度显著降低,其中添加鄂西铁矿粉所制铁焦的初始反应温度最低,比添加加拿大BLC铁矿粉所制铁焦的初始反应温度低54℃;铁焦的初始反应温度随铁矿粉中SiO2含量的增加而降低;随着炼焦配煤中添加铁矿粉比例的增加,铁焦的初始反应温度呈线性降低,当添加20%加拿大BLC铁矿粉时,铁焦的初始反应温度较未添加时低255℃;入炉煤的性质和堆积密度对铁焦初始反应温度的影响较小。     

旅游景区导视系统设计与景区环境相融合发展研究

目前我国旅游业正处于蓬勃发展,形成欣欣向荣的趋势,旅游景区的导视系统发展也必须要跟上时代的节奏。导视系统在旅游景区的作用不言而喻,不仅可以给游客以指示作用,好的设计还会给游客带来美的视觉享受,为旅游景区起到锦上添花,甚至是画龙点睛的作用。而不同的旅游景区有着各自的特点,所以导视系统设计需要根据这些特点来设计,并融入景区环境中才能发挥出它最大的作用。     

Near-MDR codes over Z 4

In this paper, we define near-MDR （maximum distance with respect to rank） codes over the ring Z4 and prove that a linear code C over Z4 is near-MDR if and only if the torsion codes Tor（C）is near-MDS. Finally, the generator matrices of all near-MDR codes over Z4 are given.     

黄嘌呤氧化酶微型生物传感器及其应用的研究

该文利用Ｎａｆｉｏｎ和电化学聚合苯酚（ＰＰｈ）复合膜将黄嘌呤氧化酶（ＸＯＤ）成功地固定在碳纤维微电极上，制成黄嘌呤氧化酶微型传感器。在５．０×１０－５～１．８×１０－３ｍｏｌ／Ｌ范围内次黄嘌呤浓度与传感器的电流响应呈线性关系，相关系数为０．９９９０。该传感器具有灵敏度高，抗干扰能力强，使用寿命长等特点。传感器用于心肌细胞缺血性损伤过程中胞外次黄嘌呤的测定，结果满意。