摘要：Jake Barnes is not the only wounded character in The Sun Also Rises (1926): All the major characters, except Bill, and several minor characters are also wounded. This paper examines how those wounded characters reflect on both Jake Barnes and Hemingway"s philosophy that we are all wounded in life and must make choices that allow us to live as best we can without hurting others. By close reading, the author hopes to show how two characters, Belmonte and Brett Ashley, may have been undervalued by critics, and to also show Hemingway"s essential ambiguity in portraying human relationships, leaving final judgments up to his readers.

摘要：Present technology has been shifting towards miniaturization of devices for energy production for portable electronics. Micro-combustors, when incorporated into a micro-power generation system, create the energy desired in the form of hot gases to power such technology. This creates the need for a design optimization of the micro-combustor in terms of geometry, fuel choice, and material selection. A total of five micro-combustor geometries, three fuels, and three materials were computationally simulated in different configurations in order to determine the optimal micro-combustor design for highest efficiency. Inlet velocity, equivalence ratio, and wall heat transfer coefficient were varied in order to test a comprehensive range of micro-combustor parameters. All simulations completed for the optimization study used ANSYS Fluent v16.1 and post-processing of the data was done in CFD Post v16.1. It was found that for lean, premixed fuel-air mixtures (φ= 0.6 - 0.9) ethane (C2H6) provided the highest flame temperatures when ignited within the micro-combustor geometries. An aluminum oxide converging micro-combustor burning ethane and air at an equivalence ratio of 0.9, an inlet velocity of 0.5 m/s, and heat transfer coefficient of 5 W/m2-K was found to produce the highest combustor efficiency, making it the optimal choice for a micro-combustor design. It is proposed that this geometry be experimentally and computationally investigated further in order to determine if additional optimization can be achieved.

摘要：以德商高速为例,介绍了匝道桥门洞的设计构造,对门洞支架的承载力进行了验算。

摘要：随着2020年新冠肺炎疫情在全球肆虐,国际环境动荡加剧引发了大众对于粮食储备问题的担忧,而及时估算种植面积对于有效应对可能的突发事件具有重要战略意义。考虑到粮食种植具有范围广、区域差异大的特点,因而进行面积估算时,混合效应模型是非常合适的选择,但现有文献多局限于解决有抽样单元的剩余区域的外推估算问题,对零样本量的域估计问题则鲜有涉及。值得注意的是,在进行农业抽样工作时,抽样数量的设计多服务于国家或省级层面,对于人口数量较少或经济程度不发达的地区,则容易出现没有样本被抽中的情况。往往这类地区是以农业为主要产业,因此忽视该类地区的农作物面积将会对我国实现农业精准监测产生显著影响。有鉴于此,本文提出使用改良后的分类混合效应模型预测方法(Modified Classified Mixed Model Prediction,MCMMP),其原理可概述如下:首先通过协变量信息对抽样单元进行聚类,然后使用混合效应模型预测所有类的随机效应,最后利用待估单元所处类的随机效应对待估单元面积进行估算。为展示MCMMP的应用潜力,本文基于山东省济宁市兖州区下属12个镇的卫星图像已经部分测绘数据,并结合“留一法”对小麦种植面积进行了估算。结果显示与现有方法相比,MCMMP具有更小的相对误差,且当感兴趣的变量为小域均值时,如村或镇范围的平均土地面积时,MCMMP依旧表现最优。

摘要：针对国高青兰线某特大桥0#块混凝土浇筑底模支撑问题,通过钢管柱支架方式进行支撑,为了保证钢管柱支架支撑结构体系的安全稳定性,采用Midas/Civil建模力学分析模型,对主支架的各构件的强度、刚度及钢管与斜撑的稳定性进行验算,计算结果表明钢管柱支架结构设计合理,受力满足要求。

摘要：Agrobacterium tumefaciens is an important tool in plant biotechnology due to its natural ability to transfer DNA into the genomes of host *** manipulations of *** have yielded considerable advances in increasing transformational efficiency in a number of plant species and ***,there is overwhelming evidence that modulating the expression of various mediators of *** virulence can lead to more successful plant transformation;thus,the application of synthetic biology to enable targeted engineering of the bacterium may enable new opportunities for advancing plant *** this review,we highlight engineering targets in both *** and plant hosts that could be exploited more effectively through precision genetic control to generate high-quality transformation events in a wider range of host *** then further discuss the current state of *** and plant engineering with regard to plant transformation and describe how future work may incorporate a rigorous synthetic biology approach to tailor strains of *** used in plant transformation.

摘要：为提升食品微生物检验学专业人才能力,培养行业发展需要的有竞争力的人才,以构思-设计-实施-操作(Conceive-Design-Implement-Operate,CDIO)教育理念为核心,对食品微生物检验学课程进行教学模式创新研究。结合行业实际需求以及高等教育人才培养目标,对食品微生物检验学教学理念思路转变、教学模式方法革新、实践教学引进科研项目、教学基地融入实践过程等方面进行了教学改革,并对考核评估体系进行了模式创新。实践证明,食品微生物检验学教学改革和考核模式创新收到了良好的教育效果,培养了符合社会发展的专业知识水平与综合能力素质双优的专业人才。以期为同行提供有效的专业改革理念,给同类高等教育工程技术人才培养和专业教学改革提供借鉴。

摘要：自尊影响着个体对积极或者消极信息的加工和提取偏向。为了探究自尊对记忆的影响是发生在记忆的编码阶段还是提取阶段,以及外显自尊、内隐自尊对再认偏向的影响,研究采用2(外显自尊:高、低)×2(内隐自尊:高、低)×2(编码深度:浅、深)×3(词汇效价:积极、中性、消极)混合设计,考察了外显自尊、内隐自尊和编码水平对不同效价形容词的再认差异。结果发现:(1)内隐自尊影响着记忆偏向,低内隐自尊者比高内隐自尊者表现出较高的积极记忆偏向;而外显自尊不影响记忆偏向;(2)深水平编码条件下内隐自尊影响着个体对积极词的无意识提取,外显自尊低、内隐自尊低者对积极词的再认率高于外显自尊低、内隐自尊高者,但这种效应并不体现在浅水平编码条件下。因此,研究认为,自尊对记忆偏向的影响主要发生在记忆的提取阶段。

摘要：客体相似性在类比匹配中的作用,是一直存在着争论的问题。该研究通过交叉匹配结合与分离的材料设计,控制类比源和类比目标之间不同相似性,探讨了客体相似性在儿童和成人空间行为关系类比匹配中的作用。实验一通过让儿童和成人完成单目标匹配任务,检验客体相似性对儿童和成人类比匹配影响的不同。实验二采用眼动技术对客体相似性在成人类比匹配过程中的作用进行分区域探讨。结果发现,客体相似性影响儿童空间行为关系类比匹配的成绩,但不影响成人的成绩。成人类比匹配的过程受到结合在关系结构之内的客体相似性的影响。我们提出优先-限制调整观点解释客体相似性在类比匹配中的作用。

摘要：通过设计特定声调组合和语境的实验室语句,考察了韵律短语边界对语句中降阶和焦点后音高骤降的影响规律,以及降阶和焦点的作用域。结果发现,在由两个韵律短语组成的语句中,韵律短语边界会阻断前一短语中的降阶作用,降阶的作用域是韵律短语。焦点的实现与降阶不同:焦点后的正向音高降低作用会跨越韵律短语边界,使得后一韵律短语的高音线明显降低;如果后一韵律短语中有降阶,则焦点的跨边界音高降低作用会与降阶作用累积在一起,产生更低的高音线,说明焦点的作用域是语调短语。但当后一韵律短语也出现焦点时,音高重置阻断了前一短语中焦点的正向音高降低作用,此时两个焦点分别独立地实现。