《计算机组装及维护》课程项目教学法研究

项目教学法对于中高职院校培养学生的实际操作能力十分有效,针对《计算机组装与维护》这门课程,通过项目设置、任务分解、组织完成的形式,激发学生学习的兴趣,提高了学生的实际动手能力,取得较好的教学效果。     

Reserve estimation of an open pit mine under price uncertainty by real option approach

Reserve estimation is a key to find the correct NPV in a mining project. The most important factor in reserve estimation is the metal price. Metal price fluctuations in recent years were exaggerated, and imposed a high degree of uncertainty to the re-serve estimation, and in consequence to the whole mine planning procedure. Real option approach is an efficient method of deci-sion making in the uncertain conditions. This approach has been used for evaluation of defined natural resources projects until now. This study considering the metal price uncertainty used real option approach to prepare a methodology for reserve estimation in open pit mines. This study was done on a copper cylindrical deposit, but the achieved methodology can be adjusted for all kinds of deposits. This methodology was comprehensively described through the examples in such a manner that can be used by the mine planners.     

基于多层动态索引的相似炉型检索方法研究

针对炉型设计涉及的原始数据量庞大,合理炉型的界定范围广,界限模糊等问题,提出应用基于实例的推理方法辅助炉型初始方案的生成.分析了高炉炉型设计的特征属性,并建立了层次结构,针对其特征索引较多,权重系数小,检索效率低等问题,建立一种多层动态索引策略来改进传统的最近邻法,实现了炉型初始设计方案的智能生成.从而提高了相似实例检索的准确性和有效性,为后续对比调整提供了具有可比性和高参考价值的设计方案.     

The influence of user cognition on consumption decision-making from the perspective of bounded rationality

Consumer decision-making is related to the success or failure of enterprises, and products that cater to the cognitive preferences of users have become a focus of current research. Based on the theory of bounded rationality, this paper explores the cognitive process of consumer decision-making. Then, how product shape affects consumption decision-making is analyzed with eye-tracking technology. Finally, the design principle of the product form is further explored. The results demonstrate the following: (1) the perceptual cognition of users has a driving effect on consumption behavior; (2) as a key factor affecting the perceptual cognition of users, product form affects consumer decision-making by influencing the degree of approach motivation; (3) by establishing the mapping relationship between product form elements and user images, the principles of product form design can be more consistent with user image preferences. This study provides useful suggestions for how to increase the purchase behavior of users from the perspective of bounded rationality.     

网络监察民警培训中教学质量提升途径的探索

在新形势新任务要求下,网络监察民察的培训存在很大的难度。本文首先介绍了网络监察民警培训的必要性,然后重点从培训课程体系、师资队伍建设、教学的方式方法和实训教学环节等方面进行了探讨,以确保培训教学质量的稳步提升。     

基于RVA法的河流生态需水量研究

以河流生态水文变化的指标体系（Indicator of Hydrologic Alteration,IHA）为基础,立足整体河流水文情势的流量谱系,采用变异性范围法（Range of Variability Approach,RVA）,进行基于长系列历史流量资料的河流生态需水量估算,并以山西省5条较大河流的生态敏感断面为对象进行研究。结果表明,利用本方法估算的结果是合理的,可为河流生态需水量的估算和水资源的可持续开发利用提供科学依据。     

变偏移距提高分辨率地震资料叠加处理方法

野外地震资料采集观测系统直接运用于提高分辨率地震资料处理,不仅忽略了观测系统与分辨率之间的关系,而且会影响分辨率效果的进一步提高。通过分析分辨率处理与地震信号频率范围的关系、分辨率与接收排列长度的关系,对比不同排列长度观测系统的分辨率处理效果,提出了变偏移距提高分辨率地震资料处理方法。     

浅析项目式教学法在中技学生《程序设计课程》的应用

在中职的素质化教育推行中,如何激发学生的动手积极性,让中职学生更好的理解和掌握课程知识和技能,提高中职学生解决问题的能力,是中职教育面临的一个重要课题。本文针对中职学生《程序设计课程》中的问题,提出了应用项目教学法。重点介绍了项目教学法在《程序设计课程》中的实施步骤,对中职学校的程序设计课程具有一定的指导意义。     

“任务型教学”在英语听力教学中的应用

“任务型教学”是一种新型的教学模式,它是语言交际学理论的发展形态,主张通过语言的交际活动来激发学生的学习兴趣,培养他们语言交际能力。而听力活动不仅是人们取得语言知识的基本途径之一,也是提高语言交际能力的中心环节,所以在英语听力教学中,教师要积极实施“任务型教学”;选择“可理解的(comprehensible)真实性的语言材料,并将材料加工成各种任务,让学生在课堂上通过完成语言交际任务,来培养各项语言技能,习得目标语。     

求相量模的一种新的近似方法

提出了一种新的求相量模值的近似方法，与其它方法相比，该算法具有比较高的近似精度，四分区时，最大误差小于７．８７５×１０－３％，在微机保护和控制装置中具有较高的实用价值。