基于CDIO的服务外包人才培养模式探索

传统教育模式下培养出的学生不能很好地满足服务外包企业需求,其原因是基于理论的教学模式缺乏对学生综合素质和实践能力的培养。将CDIO工程教育理念引入到服务外包人才培养中,探索培养工程实践能力的教学理念和教学方法,培养服务外包所需的高素质应用型人才,不断完善高校服务外包人才培养体系。将高等教育与工程教育相结合,能有效加强学生的工程基础知识、个人能力、人际团队能力和工程系统能力。     

快速离散Curvelet变换域的图像融合

目的单一图像往往难以捕获一个场景下所有的细节信息,针对这一问题,可以通过多传感器或同一传感器的不同方式来获取多幅图像,然后通过图像融合技术将获得的多幅图像进行融合。为了提高图像融合的质量,提出一种基于快速离散Curvelet变换(FDCT)的图像融合新方法。方法不同于以往的方法,提出一组新的融合规则。分别采用基于局部能量和改进拉普拉斯能量和的方法,通过对FDCT分解得到的低频和高频系数进行系数选择,然后对得到的融合系数进行FDCT逆变换重构得到融合图像。结果通过对大量的多模态医学图像、红外可见光图像以及多聚焦图像进行图像融合实验,无论是运用视觉的主观评价,还是均值、标准差、信息熵以及边缘信息保持度等客观评价标准,本文方法都优于传统的基于像素平均、小波变换、FDCT以及双边梯度等融合方法。结论对比现有的方法,本文方法对多模态和多聚焦等形式的图像融合都表现出优越的融合性能。     

InSAR中应用可靠度导向改进的分级表相位展开算法

目的 在干涉合成孔径雷达的相位展开过程中,如果相位展开的展开路径穿过残差点就会产生相位展开的误差。在相位展开的时候,希望将相位展开的误差限制在局部区域,提高相位展开的精度。方法 首先通过判断截断相位图的残差点,并以InSAR的干涉一致性图作为相位展开的可靠性度量,对截断相位图进行量化,将残差处的可靠度设为排序中的最低等级。在进行可靠度排序后进行干涉合成孔径雷达相位图的相位展开。结果 使用该算法改进了经典可靠度导向相位展开算法中可靠度排序的缓慢问题。与经典菱形算法相比,展开精度高很多。与洪水算法相比,展开速度能快上百倍。通过可靠度排序的改进,对干涉合成孔径雷达相位展开后的结果进行分析,可以看到提高了相位展开的精度,有效的控制了相位展开过程中误差的传递。结论 相位展开算法的改进提高了干涉合成孔径雷达相位展开的精度,在干涉合成孔径雷达的相位展开中可以广泛应用。     

山西省近50年风速变化及突变特征分析

利用线性拟合、M-K方法对山西省22个气象观测站1960—2010年的逐日风速资料进行了倾向、突变、逐年代变化等特征分析。研究表明,近50年来山西省平均风速存在明显的下降趋势,平均风速由20世纪60年代的2.16 m/s下降到21世纪初的1.86 m/s;不同时间段呈现不同的变化特征,1979—1989年风速出现显著下降,年均递减率达到0.046 m/s,变率远超出其他时段;对近50年山西省平均风速进行M-K检验后发现,在1982年出现明显的突变点。山西省四季平均风速均呈下降趋势,四季风速下降速率最快的为春季,冬季次之,夏季风速下降速率最慢。同样,四季风速均发生突变,突变时间点分布在1980—1985年间。除8月外,山西省各个月份风速也呈下降趋势,且均出现突变现象。     

供电企业绩效管理对策研究

绩效管理是人力资源管理中的重要举措之一,对现代企业增强对员工的掌控力和核心竞争力具有重要作用。随着我国供电体制改革的不断深入,供需平衡已成为电力能源供应的发展趋势。基于当前成功企业的绩效管理方法和供电企业在实施绩效管理工作中存在的突出问题,从绩效管理的计划、指标、流程和应用等环节,深入研究了供电企业建立符合自身特点的全员绩效管理体系的方法。     

混合休眠策略的ZigBee多点监控自组网设计

分析了ZigBee多点监控网络中休眠节点工作不同步、网络性能不稳定等问题,提出基于混合休眠策略的 ZigBee多点监控自组网设计方案,完成基于Z Stack的软件设计,并组建ZigBee星型网络进行测试。实验结果表明,节点在维持低功耗的同时,系统的同步性、稳定性得到了提高。     

应用型本科院校“数据结构”课程教学探讨

针对应用型本科院校对学生动手能力要求高,但学生学习"数据结构"课程觉得枯燥无味、难以理解的情况,对课堂教学和课后实训两方面改革进行了探讨。     

Retracted: Antecedents and Consequences of Gender Swapping in Online Games

This study examines the reasons underlying gender swapping and its impacts on online gaming behavior. While previous studies considered gender swapping to be an abnormal or rare exception in one's self‐presentation, this study hypothesized that people swap genders as a rational choice based on practical benefits. An online survey was conducted with 318 male players of MMORPGs in Korea. Players swapped gender in games to gain benefits from other players under the condition of anonymity rather than to represent their own gender identity. Men playing female avatars displayed more socially amiable behaviors conventionally characterized as more feminine. Moreover, players were more willing to purchase virtual goods to decorate their gender swapped avatars, mediated by their emotional attachment to their avatar.     

A B-spline curve extension algorithmB 样条曲线延伸算法

B-spline curve extension is an important operation in computer aided design systems. In this paper, we present a new extension algorithm for B-spline curves. The algorithm uses curve unclamping to generate a uniform B-spline curve segment from the original curve and gradually extends the segment to pass through every target point. Algorithms of uniform B-spline curves are used such that our algorithm has a low time cost and can easily handle arbitrary-order derivative constraints at the target points. Generalization for non-uniform rational B-spline curve extension is also discussed, and examples show the efficiency of our method.     

Proportional directional valve based automatic steering system for tractors

Most automatic steering systems for large tractors are designed with hydraulic systems that run on either constant flow or constant pressure. Such designs are limited in adaptability and applicability. Moreover, their control valves can unload in the neutral position and eventually lead to serious hydraulic leakage over long operation periods. In response to the problems noted above, a multifunctional automatic hydraulic steering circuit is presented. The system design is composed of a 5-way-3- position proportional directional valve, two pilot-controlled check valves, a pressure-compensated directional valve, a pressurecompensated flow regulator valve, a load shuttle valve, and a check valve, among other components. It is adaptable to most open-center systems with constant flow supply and closed-center systems with load feedback. The design maintains the lowest pressure under load feedback and stays at the neutral position during unloading, thus meeting the requirements for steering. The steering controller is based on proportional-integral-derivative (PID) running on a 51-microcontroller-unit master control chip. An experimental platform is developed to establish the basic characteristics of the system subject to stepwise inputs and sinusoidal tracking. Test results show that the system design demonstrates excellent control accuracy, fast response, and negligible leak during long operation periods.