摘要：众包测试是软件测试领域的一种新兴趋势,具有更加可靠、成本更低和效率更快的优点。但是由于众测工人专业水平不同,提交的测试用例报告缺乏规范性,为报告的审核、缺陷的复现都增加了困难。该文提出了一种通过众测工人的操作记录自动生成文本测试用例的新方法,并实现了该测试工具。首先,对测试工人的操作进行录制从而获取录制信息,录制信息可以划分为三大模块,包含静态页面信息、动态页面信息和交互信息;其次,通过深度优先遍历算法获取组件名称、组件类型、交互动作和交互数据,并按照众测工人的实际操作步骤生成测试序列;对于测试序列中存在组件名称匹配错误的问题,通过YOLOv5目标检测和OCR文字识别技术设计了n元组生成算法,用于生成组件名称与其选项的对应关系,并对匹配错误的组件名称进行自动修改;最后,通过自定义规则集将测试序列转换为文本测试用例。该方法自动生成统一规范的测试用例,降低了众测的门槛,提高了测试效率,并且有利于众测服务平台的质量评估工作。为了验证该方法的有效性,针对不同开发技术的Web系统进行了测试,并与目前最新版本的UFT,Selenium IDE和Katalon Recorder三款工具进行了对比。实验结果表明,该方法生成的测试用例在测试步骤完整性、测试用例信息完整性和时间性能方面具有较好的表现。

摘要：Radon is a polluting and radioactive gas released by rock fracture. Shear fracture is widely developed in surrounding rock mass of deep engineering. Nevertheless, the correlation between radon release and the shear fracture is undefined. In this study, the intact Jinping marble and Baihetan basalt were adopted as samples. Based on radionuclide content analysis, the intrinsic characteristics of radon emission were analyzed. Then a direct shear testing system was designed to synchronously measure radon release during rock fracture. The direct shear tests were carried out under different normal stresses. The relationship between shear fracture process and cumulative radon concentration was explored. The results indicated that radon release varied with the increase of shear displacement under the same normal stress. The general pattern showed a slight increase and fell in the initial loading phase, then increased rapidly to the peak release approximately corresponding to the peak of shear stress, and finally decreased to a stable level with the development of shear displacement after sample failure. The initial and peak radon concentrations increased linearly with the increase of normal stress. The same trend was found in shear failure surface area and cumulative radon concentration according to the rise angle(RA) value-average frequency(AF) distribution.

摘要：Bone screws are devices used to fix implants or bones to ***,conventional screws are mechanically fixed with thread and often face long-term failure due to poor *** improve osseointegration,screws are evolving from solid and smooth to porous and *** manufacturing(AM)offers a high degree of manufacturing freedom,enabling the preparation of predesigned screws that are porous and *** paper provides an overview of the problems currently faced by bone screws:long-term loosening and screw ***,advances in osseointegrated screws are summarized hierarchically(sub-micro,micro,and macro).At the sub-microscale level,we describe surface-modification techniques for enhancing *** the micro level,we summarize the micro-design parameters that affect the mechanical and biological properties of porous osseointegrated screws,including porosity,pore size,and pore *** addition,we highlight three promising pore shapes:triply periodic minimal surface,auxetic structure with negative Poisson ratio,and the Voronoi *** the macro level,we outline the strategies of graded design,gradient design,and topology optimization design to improve the mechanical strength of porous osseointegrated ***,this paper outlines advances in AM technology for enhancing the mechanical properties of porous osseointegrated *** osseointegrated screws with hierarchical design are expected to provide excellent long-term fixation and the required mechanical strength.

摘要：对新型盘扣支撑体梁底免立杆支托横梁结构特点和制造过程进行分析,利用传感器测试方法对其承载能力进行了系统的研究。试验结果表明,盘扣支撑体支托横梁的长上托水平位移以及架体倾角分别为2.12mm和0.88°,均处于较低水平。研究结果说明,新型盘扣支撑体支托横梁在竖向荷载和横向荷载作用下均能够稳定地承受载荷,具有良好的承载能力。

摘要：温室大棚可通过控制环境因素,改善农业生产效益。现有的温室大棚对环境因素的调节过于依赖人工干预,限制了其效率和可持续性。基于OneNET云平台的温室大棚智能补光系统可实时监测大棚内的光强信息,当光强未达到最佳档位时,云平台可手动或自动地进行补光档位调节。经测试,系统性能良好,能满足农作物不同生长阶段和不同季节对补光的需求,对智慧农业的发展具有一定的指导意义。

摘要：Active fault creep slip induces deformation of rock mass buried deeply in fault zones that significantly affect the operational safety of long linear projects passing through *** distribution patterns of rock masses in active fault zones which have been investigated previously are the key design basis for such ***,a discrete element numerical model with different fault types,slip time,dip angles,and complex geological features was established,and then the creep slip for normal,reverse,and strike-slip faults were simulated to analyze the displacement distribution in the fault rock mass.A disk rotation test system and the corresponding laboratory test method were developed for simulating rock mass displacement induced by creep slippage of faults.A series of rotation tests for softand hard-layered specimens under combined compression and torsional stress were conducted to verify the numerical results and analyze the factors influencing the displacement *** S-shaped displacement distribution independent of fault dip angle was identified corresponding to reverse,normal,and strike-slip *** results indicated that the higher the degree of horizontal extrusion,the softer the rock mass at the fault core,and the higher the degree of displacement concentration in the fault core;about 70%of the creep slip displacement occurs within this zone under 100 years of creep slippage.

摘要：目的了解混合式教学模式的特点及《药事管理学》中运用该模式的原因,探究混合式教学模式在«药事管理学»中的运用。方法把案例分析法融入教学设计中,在学生事先完成线上自主学习的基础上,每次见面课都围绕着凝练的主题开展案例教学。结果传统教学模式下,课堂上存在学生参与度不高、思维训练少、教材内容相对滞后、教学效果不佳等问题,采用混合式教学模式并引入现代教育技术手段记录学生学习过程能有效改善这些问题,使学生成为课堂的主人,提高了学生学习的积极性及主动性。结论该模式充分体现了“以学生发展为中心”的理念,推动了课程育人目标的实现。

摘要：致密油藏孔喉较小而渗吸作用显著,为提高致密油藏水驱效率,提出驱渗结合采油方法,同时利用驱替与渗吸作用。为验证该方法的可行性与主控因素,在水驱模型的基础上,考虑了渗吸作用,并基于实验数据特征建立了渗吸项模型,建立了驱渗结合采油数值模拟模型。结果表明,渗吸作用有效增加了注入水的波及面积,有效置换出基质中的原油,提升了采油效率;主控地质因素包括基质/裂缝孔隙度、渗透率和渗吸经验参数,主控工程因素包括注水压力、裂缝间距和半长;现场应用表明相较水驱方式,驱渗结合采油的日产油速度提高了约1倍,受效时间约为200 d,提高累产约为340 t,说明驱渗结合采油工艺可有效提高中国致密油藏的采收率,所建模型可用于驱渗结合采油的优化设计。

摘要：Searching and designing materials with intrinsically low lattice thermal conductivity （LTC） have attracted extensive considera- tion in thermoelectrics and thermal management community. The concept of part-crystalline part-liquid state, or even part-crystalline part-amorphous state, has recently been proposed to describe the exotic structure of materials with chemical-bond hierarchy, in which a set of atoms is weakly bonded to the rest species while the other sublattices retain relatively strong rigidity. The whole system inherently manifests the coexistence of rigid crystalline sublattices and fluctuating noncrystalline substructures. Representative materials in the unusual state can be classified into two categories, i.e., caged and non-caged ones. LTCs in both systems deviate from the traditional 7-1 relationship （T, the absolute temperature）, which can hardly be described by small-parameter-based perturbation approaches. Beyond the classical perturbation theory, an extra rattling-like scattering should be considered to interpret the liquid-like and sublattice-amorphization-induced heat transport. Such a kind of compounds could be promising high-performance thermoelectric materials, due to the extremely low LTCs. Other physical properties for these part-crystalline substances should also exhibit certain novelty and deserve further exploration.

摘要：动画艺术是最富于想象和联想的艺术形式之一。然而中国动画创作与发展的一个重要瓶颈就是动画创意的薄弱和贫乏,这是动画界不争的事实与共识。本文基于这样的窘境背景,围绕着动画创意造型这一动画创作的基本问题,对动画造型设计进行分析、归纳,并沉淀出一些创意线索,以此对解开动画创作之瓶颈提供必要的理论与实践的支持。