Research Partners,Teaching Partners: A Collaboration between FYC Faculty and Librarians to Study Students’ Research and Writing Habits

In Spring 2012, instruction librarians collaborated with first year composition (FYC) faculty to study students’ research habits as they related to writing. We collected process narratives from students in the introductory FYC course at the beginning and end of the fall semester, and a group of librarians and FYC faculty coded them together. Although we did not achieve one of our initial research goals, we still gained valuable insight into how our students perceive sources and the research process. We applied what we learned to create new instructional materials and developed a valuable relationship with FYC faculty.     

大型抽水蓄能电站首机首次启动试验方式选择研究——水泵工况启动试验方式关注的主要技术问题

对大型抽水蓄能电站首机首次水泵工况启动试验方式关注的主要技术问题,重点研究了9个技术难点和特点问题,提出分析意见和风险性评估。     

Ehrenfeucht-Fraïssé games in finite set theory

In this article, with Ehrenfeucht-Fraïssé games we prove that Δ₁≠Δ₀ on BFR, which implies Δ≠Δ₀ on BFR, and thus solve an open problem raised by Albert Atserias in his dissertation (Δ₀,Δ₁,Δ are fragments of first order logic and BFR is a class of finite sets which in essence is equivalent to a class of finite pure arithmetic structures with built-in BIT predicate).     

无码间串扰传输特性动态仿真分析与研究

码间串扰和信道噪声是影响基带传输系统性能的两个主要因素。因此,如何消除它们的影响,使系统的误码率达到规定的要求是数字基带系统中必须研究的两个问题。奈奎斯特第一准则为消除码间串扰奠定了理论基础。本文将以此为依据,通过使用Systemview和MATLAB软件实现对基带传输系统的仿真,并根据所得图形从消除码间串扰的角度来定性地分析无码间串扰系统函数的传输特性。实验中所得结果将对我们的理解和实践均有一定的指导作用。     

基于EMS系统的低频减载实时计算的实现

目前电网调度生产中尚不能实现低频减载的在线实时监测,调度无法及时掌握低频减载控制负荷,给电网的安全稳定运行造成一定的安全隐患。为解决该问题,在EMS系统中开发了基于设备的动态拓扑功能,利用广度优先算法将末端设备的负荷动态拓扑到需统计的单位母线上,从而实时显示每条母线8轮低频减载值,再利用E语言文件将计算好的值传给上一级单位进行更高电压等级母线的实时统计。     

Ergonomics solution for crossing collisions based on field assessment of visual environment at urban intersections in Japan

This paper aims to assess quantitatively the actual visual environment of uncontrolled urban downtown intersections in Japan in relation to frequently occurring crossing collisions and to discuss the safety countermeasures for them. In Field Study 1 dealing with direct visibility, our ultra-wide-angle photograph analysis revealed that most of the right/left-ward visible range at 11 intersections were insufficient to check safety, and the quality of direct visibility was closely associated with causing crossing collisions. The countermeasures to reduce a blind area were determined to be a top priority. In Field Study 2 dealing with indirect visibility, more than half of the 25 traffic convex mirrors had marked shortcomings for preventive safety, and ergonomics guidelines ensuring indirect visibility were proposed for installing traffic convex mirrors. Low-cost/low-technology-oriented countermeasures are highly recommended to obtain clear/sufficient images of crucial information satisfying drivers' requirements on traffic convex mirrors in accordance with those ergonomics guidelines was highly recommended. Crossing collisions could be prevented by improvement of poor direct and indirect visibility.     

Atomic origin of the traps in memristive interface

In recent years,trap-related interfacial transport phenomena have received great attention owing to their potential applications in resistive switching devices and photo detectors.Not long ago,one new type of memristive interface that is composed of F-doped SnO2 and Bi2S3 nano-network layers has demonstrated a bivariate-continuous-tunable resistance with a swift response comparable to the one in neuron synapses and with a brain-like memorizing capability.However,the resistive mechanism is still not clearly understood because of lack of evidence,and the limited improvement in the development of the interfacial device.By combining I-V characterization,electron energy-loss spectroscopy,and firstprinciple calculation,we studied in detail the macro/micro features of the memristive interface using experimental and theoretical methods,and confirmed that its atomic origin is attributed to the traps induced by O-doping.This implies that impurity-doping might be an effective strategy for improving switching features and building new interfacial memristors.     

孔子问答镜的文化特征提取与设计应用研究

目的将唐镜的元素运用到产品设计过程中,不仅满足目标对象对产品的多样性需求,而且也增强设计的故事性和内涵性。方法通过Kano模型用户需求分析,得到目标对象的主要需求;收集孔子问答镜的相关资料,提取孔子问答镜的显性文化特征和隐性文化特征;融合目标对象的主要需求,按照形状文法的规则演变,对提取的文化特征进行加工处理,得到可以直接应用的创意设计元素;并结合腕表设计案例对该方法进行实践验证。结论孔子问答镜文化特征提取与设计应用,既有利于提升现代人的品位,又实现了对中国传统文化的传承和创新。     

露点仪冷镜表面拉乌尔效应及清洁方法

露点仪测量气体湿度过程中,拉乌尔效应对测量准确性影响很大。使用测量凝结物冰点值估算拉乌尔效应影响值,发现在冷镜表面滴入酒精吹扫并加热蒸发残留酒精清洁表面,可以大大减少拉乌尔效应影响。通过实验可以减少拉乌尔效应露点误差到0.1℃以下。     

钇硅酸盐材料力学性能的第一性原理研究

为深入研究C_f/SiC复合材料钇硅酸盐涂层材料Y_2SiO_5与Y_2Si_2O_7的力学性能,为钇硅酸盐涂层体系的设计提供理论依据,基于第一性原理广义梯度近似,研究钇硅酸盐理想晶体X1-Y_2SiO_5和γ-Y_2Si_2O_7的电子结构、力学性能。结果表明:X1-Y_2SiO_5和γ-Y_2Si_2O_7均为机械稳定结构,X1-Y_2SiO_5与γ-Y_2Si_2O_7的体模量、剪切模量、弹性模量、泊松比分别为112,49,128GPa,0.31和114,55,142GPa,0.29。可见X1-Y_2SiO_5的模量较γ-Y_2Si_2O_7低。同时研究二者理想晶体的韧性、热膨胀系数、残余应力。结果表明:X1-Y_2SiO_5韧性较γ-Y_2Si_2O_7好,热膨胀系数较γ-Y_2Si_2O_7高,残余应力较γ-Y_2Si_2O_7低。