控制系统仿真的新问题：模型不确定性

本文从解决模型不确定性的角度研究了控制系统仿真问题。首先，讨论了把模型不确定性引入控制系统仿真的必要性，然后阐述了一种全新的观点：控制系统仿真应该是鲁棒辨识与鲁棒控制的有机结合     

我国教育投资对国民收入的影响分析

本文利用互汇（Ｃｏｉｎｔｅｇｒａｔｉｏｎ）分析和Ｇｒａｎｇｅｒ因果检验方法研究了１９５０－１９８８年期间，我国教育投资和国民收入之间的相互关系，研究结果证实在１９５０－１９８８年期间，我国国民收入与国家对教育的投资之间存在着长期稳定的关系，且教育投资与国民收入间存在着互为因果的因果关系．这两项结论从实证分析方面肯定了教育投资在我国经济增长中的作用．     

Identification and classification of subspecies of Asian cultivated rice and their hybrids

Having reviewed the major classification systems proposed by various scholars across the world, it is found thatindica andjaponica underO. sativa L. are two major directions thoroughly differentiated from the Asian cultivated rice, forming the framework of the classification structure. A system withindica andjaponica as the only two subspecies is therefore reiterated. There are various ways to determine the indica-japonica identity of hybrid rice, but the “combined morphological trait index” (CMT index) method is more efficient and easier to handle, although the isozyme analysis, molecular marker analysis and grain quality assay methods are also feasible.     

《莽丛中》的女性主义解读

芥川小说<莽丛中>通过女主人公真砂的受辱事件,真实反映出女性在父权制社会的历史境遇.作为一名被侮辱和被戕害的女性,真砂既要遭受男权社会的生理和心理的双重压迫,还无法摆脱父权制话语的规范和制约.真砂实际上处于一种两难境地:如果认同父权制社会的角色定位,则势必会丧失自我的性别权利;如果违背父权制社会的伦理法权,又势必会沦为不贞或堕落的形象.真砂的哭诉反映了她反抗男性霸权的潜意识,预示着其对现实处境与性别意识的逐渐觉醒.     

Naturally-formed objects categorized as artifacts: Effect of objects’ functional depictions

Past research has identified a variety of factors that influence cognitive processing of artifact concepts, but few experiments tested possible interactive patterns among these factors. Using a natural language depiction based free naming task, we explored how an object’s function and its history (information about how an object was formed by natural force) interact to affect categorization judgment in a 2×2 between- subjects experiment (N = 169). The study had two key findings: (i) Without presenting an object’s function, presenting the history of its natural formation increased subjects’ tendency to name the object under the “natural” domain and decreased their tendency to name it under the “artifact” domain; (ii) once we presented the depiction of an object’s function, the effect of history presentation on categorization disappeared: Subjects in both conditions strongly preferred naming objects as artifacts. In summary, presenting depiction of an object’s function inhibited the effect of history on object categorization. Current findings suggest that an object’s function plays a fundamental role in the cognitive processing of artifact concepts.     

H型钢梁Z形焊接对接节点承载性能

在两根H型钢梁的对接拼接连接时,使用螺栓连接容易安装不到位,达不到强度要求,在现场施工过程中,焊接连接比螺栓连接更方便施工,但焊接连接会导致残余应力和残余变形,为了维护钢构件的牢靠度和安全度,本文提出一种Z型对接焊接节点形式,与规范里的焊接H型钢梁对接节点比较,为考察该节点的受力性能,进一步探究究节点区域的刚度变化和应力分布情况,利用ABAQUS软件对该Z型节点以及标准节点进行有限元分析,发现此Z型节点承载性能比标准节点承载性能有所提升,同时方便施工现场节点快速拼接。     

Construction and anti-tumor effects of recombinant fowlpox virus expressing Newcastle disease virus hemagglutinin-neuramidinase gene

Hemagglutinin-neuramidinase (HN), a Newcastle disease virus-derived protein, not only mediates receptor recognition but also possesses neuraminidase (NA) activity, the ability to cleave a component of those receptors, N-acetylneuraminic acid (NAcneu, sialic acid). It is known that this protein in mammalian species, including human beings, has interesting anti-neoplastic as well as immune stimulating properties. To explore the use of the HN gene in cancer gene therapy, we constructed a recombi-nant fowlpox virus expressing the HN protein (vFV-HN) and compared the anti-tumor activity of the recombinant virus with that of wild-type fowlpox virus (FPV) in vivo and in vitro. Here we found that although B16 cells were somewhat resistant to the basal cytotoxic effect of wild-type fowlpox virus, infection with vFV-HN caused a pronounced cytotoxic effect and, the survival of tumor-bearing mice immunized with vFV-HN was significantly increased compared with the survival of mice immunized with the FPV alone. Furthermore, the immunization of mice with vFV-HN elicited a B16 tumor-specific cytotoxic T lymphocyte (CTL) response and clonal expansion of both CD4 and CD8 T cell populations in vivo. In addition, T cells from lymph nodes of mice vaccinated with vFV-HN secreted high levels of the Th1 cytokine IL-2 and IFN-γ, indicating that the regression of tumor cells is related to a Th1-type dominant immune response. These results demonstrate that vaccination with vFV-HN may be a potential strategy for cancer gene therapy.     

具强吸引项的拟线性抛物方程解的耗竭

讨论了一类拟线性抛物方程柯西问题与初边值问题解的耗竭现象，给出了解在有限时刻出现耗竭的条件，并对耗竭时刻的上限进行了估计。     

石棉MS4.5级地震斜坡动力响应规律

2022年9月雅安市石棉县发生M_s4.5级地震,布置在泸定冷竹关沟的强震监测仪记录到了地震数据,利用MATLAB进行小波变换后,得到时频图谱。分析结果表明：S波在穿越岩层到达地表后会分化成高频和低频两部分,但在时域上间隔很小;山体的山脊部位地震动响应强烈,S波低频携带能量更高,在发震时高频与低频能量会相互叠加,而低频叠加能量会更大;地震动响应规律存在方向性,东西向和南北向比垂直向的响应更加强烈;单薄山脊场地放大效应强于浑厚山体,原因为浑厚山体对地震波存在过滤作用。     

钢铁行业ERP产品编码分析

本文介绍了物料编码的基本规则、重要性,及钢铁行业产品编码一般采取的方法,及各种方法的之间的区别。