《测试工程学》融入课程思政的探索

现代高等教育不再仅仅注重传授专业知识,它也注重学生的思想教育。作为工程领域中非常必要的一门课程,《测试工程学》专业课实用性强、范围广泛,并在社会发展中扮演着不可替代的角色。因此,本文探讨了如何将思想政治教育元素融入到《测试工程学》课程之中。首先,我们分析了《测试工程学》课程与思想政治教育之间的内在联系。接着,根据课程目标,阐述了该课程中实施思政教育的方法。最后,我们通过案例分析来探讨在《测试工程学》课程中进一步完善思政教育的可行性,为该课程的思政教育提供参考。

试析《测试技术与传感器》课程的多媒体教学

随着计算机技术的快速发展,学校硬件设施不断得到改善,教学手段也越来越丰富,尤其是以计算机为核心的多媒体技术在现代教育教学中得到越来越广泛的应用。笔者结合自己近年来《测试技术与传感器》课程的授课经验,探讨了如何优化该课程的多媒体教学,进而提高课堂教学质量。

《测试与检测技术基础》课程的教学改革与创新

在与国外联合办学的背景下,根据《测试与检测技术基础》课程的教学改革与实践,探索形成了符合该课程特点的教学理念、教学体系和教学方法,对课程实验组织和实验指导方法进行了改革与创新,并在借鉴国外先进经验的基础上,建立了新的课程评价体系与考核方法。

测试

三个人在森林里迷了路，被食人族抓了起来。食人王对三个俘虏说，只要他们能通过一个测试，就可以活命。测试的第一步是他们各自到森林里找回十个相同的果子。于是三个人分头去找果手：

从IELTS考试看我国英语测试系统改革趋势

IELTS考试因其具有科学性、公信度高、客观性强等特点 而被有关专家认为是目前国内外各种英语测试中最为可信和有效的、能够比较客观地考察出 考生的实际英语应用能力的测试体系。我国目前的英语测试大多仍注重考察学生的英语语言 知识，难以客观、公正地反映学生的语言能力。IELTS测试体系为我国英语测试系统的测试 模式、内容和评估标准的改革和完善、提高测试的可靠性和有效性等提供了宝贵的可鉴之资 。

测试仪器仪表软件的研制

随着计算机多媒体技术的普及，计算机辅助教育开始渗透到各行各业．本文着重介绍了自行研制开发的油田测试仪表工岗位培训辅助软件──《测试仪器仪表》软件，主要内容包括软件的必要性，软件的主要内容，软件的技术特色，制作体会等．

普通话水平测试“命题说话”项计算机评测质量的考察与评价--基于人机数据互证的分析方法

普通话水平测试“命题说话”项的计算机评测,技术难度要大大高于其他三项题型,其评测质量直接关涉考试信度。采用抽样统计的方法,对比人工评测和人机评测的组内初评数据、人机评测的组内复审数据,并对复审案例进行复听,试图通过人机数据互证来考察计算机评测的质量。研究结果显示,计算机评测总体达到人工评测水平,评分稳定性优于人工评测,但尚存在因信息处理能力欠缺而导致的少量误判、漏判现象。具体表现为对某些语言材料的识别不够精准,对不同水平考生的评分尺度难以高度一致。

感悟测试驱动开发

软件开发方法学的泰斗Kent Beck先生最为推崇“模式，极限编程和测试驱动开发”。在他所创造的极限编程(XP)方法论中，就向大家推荐“测试先行”这一最佳实践，并且还专门撰写了《测试驱动开发》一书，详细说明如何实现。测试驱动开发是极限编程的重要特点，它以不断的测试推动代码的开发，从而实现既简化代码，又保证质量的目标。

测试驱动开发模式——《测试驱动开发》精彩选读

Kent Beck在其创造的极限编程(XP)方法论中,推荐了“测试先行”这一最佳实践,并撰写《Test—Driven Development》一书。测试驱动开发(TDD)以不断的测试推动代码的开发,既简化了代码,又保证了软件质量,但是如何正确地进行测试,以及如何对代码中难以测试的地方进行测试,却是困扰开发团队的问题。该书跟踪介绍了两个TDD项目,描述了程序员容易上手又能大大提高工作质量的技术。

动态语言开发的“测试后行”实践

测试驱动开发（Test Driven Development）是2000年之后在敏捷软件运动中兴起的一种微观过程和思想，它强调由程序员本人发起的代码测试，并且将这种测试行为提到了开发过程的核心地位上。由于有了Kent Beck的Jolt获奖著作《测试驱动开发》的宣教，更由于JUnit、NUnit等工具的迅速普及，这一开发思想迅速流行开，并且在Java、．NET等平台上取得了非常好的效果。也正因为如此，Ruby、Python、Ped等主流动态语言无一例外，均将UnitTest支持直接加入标准库。由于动态语言本身所具有的强大运行时信息，在动态语言中应用测试驱动开发，较之静态语言如C#、Java等，更加轻松自如。事实上，

应用技术型大学《测试技术基础》课程教学改革研究

《测试技术基础》是一门理论性和实践性都很强的课程。现代测试技术发展迅速,且课程内容知识面广、枯燥、抽象,学生普遍觉得学习难度较大。针对以上问题,本文对《测试技术基础》课程的课程体系、教学方法和实验教学几个方面的改革进行了探索。

Research on Automatic Test System of Engine Blade Natural Frequency

Blades are one of the important components on aircraft engines.If they break due to vibration failure,the normal operation of the entire engine will be offected.Therefore,it is necessary to measure their natural frequency before installing them on the engine to avoid resonance.At present,most blade vibration testing systems require manual operation by operators,which has high requirements for operators and the testing process is also very cumbersome.Therefore,the testing efficiency is low and cannot meet the needs of efficient testing.To solve the current problems of low testing efficiency and high operational requirements,a high-precision and high-efficiency automatic test system is designed.The testing accuracy of this system can reach ±1%,and the testing efficiency is improved by 37% compared to manual testing.Firstly,the influence of compression force and vibration exciter position on natural frequency test is analyzed by amplitude-frequency curve,so as to calibrate servo cylinder and fourdimensional motion platform.Secondly,the sine wave signal is used as the excitation to sweep the blade linearly,and the natural frequency is determined by the amplitude peak in the frequency domain.Finally,the accuracy experiment and efficiency experiment are carried out on the developed test system,whose results verify its high efficiency and high precision.

Scoring and Consequential Validity Evidence of Computer-and Paper-Based Writing Tests in Times of Change

Little is known about how the assessment modality,i.e.,computer-based(CB)and paper-based(PB)tests,affects language teachers’scorings,perceptions,and preferences and,therefore,the validity and fairness of classroom writing assessments.The present mixed-methods study used Shaw and Weir’s(2007)sociocognitive writing test validation framework to examine the scoring and consequential validity evidence of CB and PB writing tests in EFL classroom assessment in higher education.Original handwritten and word-processed texts of 38 EFL university students were transcribed to their opposite format and assessed by three language lecturers(N=456 texts,152 per teacher)to examine the scoring validity of CB and PB tests.The teachers’perceptions of text quality and preferences for assessment modality accounted for the consequential validity evidence of both tests.Findings revealed that the assessment modality impacted teachers’scorings,perceptions,and preferences.The teachers awarded higher scores to original and transcribed handwritten texts,particularly text organization and language use.The teachers’perceptions of text quality differed from their ratings,and physical,psychological,and experiential characteristics influenced their preferences for assessment modality.The results have implications for the validity and fairness of CB and PB writing tests and teachers’assessment practices.

Fatigue behavior of aluminum stiffened plate subjected to random vibration loading

Vibration tests were carried out on three types of stiffened aluminum plates with fully clamped boundaries under random base excitation. During the test, the response of the specimens was monitored using strain gauges. Based on the strain history, the accumulation of fatigue damage of the stiffened plates was estimated by means of the rainflow cycle counting technique and the Miner linear damage accumulation model in the time domain. Utilizing the change of natural frequencies, a nonlinear model was fitted for predicting the fatigue damage of plate and then the foregone failure criterion of 5% reduction in natural frequency is improved. The influence of section and spacing of the stiffeners on the vibration fatigue behavior of the aluminum plate was investigated. The results show that the fatigue life of aluminum plate increases with adding either T or L section riveted stiffeners. With the same cross-sectional area of stiffener, the T section stiffened plate shows longer fatigue life than L section stiffened plate. Meanwhile, the vibration fatigue life also shows great sensitivity to the spacing between the stiffeners.

Catalytic cracking of light diesel over Au/ZSM-5 catalyst for increasing propylene production

The catalytic cracking of light diesel oil （235–337 ＆#176;C） over gold‐modified ZSM‐5 was investigated in a small confined fluidized bed at 460 ＆#176;C and ambient pressure. Different Au/ZSM‐5 catalysts were prepared by a modified deposition‐precipitation method by changing the preparation procedure and the amount of gold loading and were characterized by X‐ray diffraction, N2 adsorp‐tion‐desorption, temperature‐programmed desorption of NH3, transmission electron microscopy and inductively coupled plasma spectrometer. It was found that a small amount of gold had a posi‐tive effect on the catalytic cracking of light diesel oil and increased propylene production at a rela‐tively low temperature. The maintenance of the ZSM‐5 MFI structure, pore size distribution and the density of weak and strong acid sites of the Au/ZSM‐5 catalysts depended on the preparation pa‐rameters and the Au loading. Simultaneous enhancement of the micro‐activity and propylene pro‐duction relies on a synergy between the pore size distribution and the relative intensity of the weak and strong acid sites. A significant improvement in the micro‐activity index with an increase of 4.5 units and in the propylene selectivity with an increase of 23.2 units was obtained over the Au/ZSM‐5 catalyst with an actual Au loading of 0.17 wt%.

Operational modal identification of suspension bridge based on structural health monitoring system

An output-only modal identification method by a combination use of the peak-picking method and the cross spectrum methods are presented. Meanwhile, a novel mode shape optimum method of the deck is proposed. The methods are applied to the operational modal identification system of the Runyang Suspension Bridge, which can be used to obtain the modal parameters of the bridge from out-only data sets collected by its structural health monitoring system （SHMS）. As an example, the vibration response data of the deck, cable and tower recorded during typhoon Matsa excitation are used to illustrate the program application. Some of the modal frequencies observed from deck vibration responses are also found in the vibration responses of the cable and the tower. The results show that some modal shapes of the deck are strongly coupled with the cable and the tower. By comparing the identification results from the operational modal system with those from field measurements, a good agreement between them is achieved, but some modal frequencies identified from the operational modal identification system （OMIS）, such as L1 and L2, obviously decrease compared with those from the field measurements.

WEIGHTED LEAST SQUARE METHOD FOR S-N CURVE FITTING

An S-N curve fitting approach is proposed based on the weighted least square method, and the weights are inversely proportional to the length of mean confidence intervals of experimental data sets. The assumption coincides with the physical characteristics of the fatigue life scatter. Two examples demonstrate the method. It is shown that the method has better accuracy and reasonableness compared with the usual least square method.

Applications of seismic techniques to gas hydrates prediction

Based on the sensitivity of geophysical response to gas hydrates contained in sediments, we studied the prediction of gas hydrates with seismic techniques, including seismic attributes analysis, AVO, inverted velocity field construction for dipping formations, and pseudo-well constrained impedance inversion. We used an optimal integration of geophysical techniques results in a set of reliable and effective workflows to predict gas hydrates. The results show that the integrated analysis of the combination of reflectivity amplitude, instantaneous phase, interval velocity, relative impedance, absolute impedance, and AVO intercept is a valid combination of techniques for identifying the BSR （Bottom Simulated Reflector） from the lower boundary of the gas hydrates. Integration of seismic sections, relative and absolute impedance sections, and interval velocity sections can improve the validity of gas hydrates determination. The combination of instantaneous frequency, energy half attenuation time, interval velocity, AVO intercept, AVO product, and AVO fluid factor accurately locates the escaped gas beneath the BSR. With these conclusions, the combined techniques have been used to successfully predict the gas hydrates in the Dongsha Sea area.

A Radial Stub Test Circuit for Microwave Power Devices

With the principles of microwave circuits and semiconductor device physics, two microwave power device test circuits combined with a test fixture are designed and simulated, whose properties are evaluated by a parameter network analyzer within the frequency range from 3 to 8GHz. The simulation and experimental results verify that the test circuit with a radial stub is better than that without. As an example, a C-band AlGaN/GaN HEMT microwave power device is tested with the designed circuit and fixture. With a 5.4GHz microwave input signal,the maximum gain is 8.75dB,and the maximum output power is 33.2dBm.

Electrochemical behavior of galena and jamesonite flotation in high alkaline pulp

In order to effectively separate galena and jamesonite and improve the recovery during the mixing flotation, the interaction mechanisms between the minerals and the collector of diethyl dithiocarbamate （DDTC） were investigated. Single mineral flotation test was organized to research the effect of pulp pH value on the flotation behavior of galena and jamesonite. Electrochemistry property of the interaction of these two minerals with DDTC was investigated by cyclic voltammetry and Tafel tests. Flotation test shows that the recovery of jamesonite in high alkaline pulp is strongly depressed by lime （Ca（OH）2）. The cyclic voltammetry and Tafel tests results show that the interaction between galena and DDTC is an electrochemical process. High pH value has little influence on the interaction between galena and DDTC, while it has great effect on jamesonite due to self-oxidation and specific adsorption of OH^- and CaOH^＋ on jamesonite surface. Non-electroactive hydroxyl compound and low-electroconductive calcium compounds cover the surface of jamesonite, which impedes electron transfer and DDTC adsorption, thus leads to very low floatability of jamesonite.