强夯振动对CFG桩复合地基影响研究

通过数值模拟和理论分析等手段,利用有限元分析软件ADINA建立了强夯加固吹填土地基动力有限元分析模型,分别在1 000kN.m,2 000kN.m,3 000kN.m和4 000kN.m的夯击能作用下,通过改变夯击点与CFG桩之间的距离,确定强夯对CFG桩的破坏效应的影响因素,确定其安全距离,分析强夯振动下的破坏过程及破坏形态。     

察哈尔抗日同盟军收复察东四县考

1933年抗日同盟军收复多伦一役,当时众说纷纭,真相遂变得扑朔迷离。其实,当时侵入察北的部队没有日本正规军,全部都是伪军,但伪军中设有日军顾问和“特设队”等;收复多伦前,同盟军与伪军李守信部确实有过接洽;虽有接洽,但亦有过激烈战事,两者都是事实。’     

Learners' eye movements during construction of mechanical kinematic representations from static diagrams

We investigated the influence of numbered arrows on construction of mechanical kinematic representations by using static diagrams. Undergraduate participants viewed a two-stage diagram depicting a flushing cistern (with or without numbered arrows) and answered questions about its function, step-by-step. The arrow group demonstrated greater overall accuracy and made fewer errors on the measure of continuous relations than did the non-arrow group. The arrow group also spent more time looking at components relevant to the operational sequence and had longer first-pass fixation times and shorter saccade lengths. The non-arrow group made more saccades between the two diagrams. Analysis of transition probabilities indicated that both groups viewed components according to their continuous relations. The arrow group followed the numbered arrows whereas the unique pathway of the non-arrow group was to compare the two diagrams. These findings indicate that numbered arrows provide perceptual information but also facilitate cognitive processing.     

Analysis of ice slurry production by direct contact heat transfer of air and water solution

In this paper, a novel system using direct contact heat transfer between air and water solution was proposed to generate ice slurry. The heat transfer process and the system performance were studied; energy efficiency coefficients of 0.038, 0.053, and 0.064 were obtained using different solutions. An empirical relationship between the volumetric heat transfer coefficient Uv and the main parameters was obtained by fitting the experimental data. The Uv calculated from the empirical formula agreed with the experimental Uv quite well with a relative error of less than 15%. Based on the empirical formula, a laboratory-scale direct contact ice slurry generator was then constructed, with practical application in mind. If the air flow rate is fixed at 200 m3/h, the ice production rate will be 0.091 kg/min. The experimental results also showed that the cold energy consumption of the air compressor accounted for more than half of the total amount. To improve the system energy efficiency coefficient, it is necessary to increase the air pipes insulation and the solution＇s thermal capacity, and also it is appropriate to utilize the free cold energy of liquefied natural gas （LNG）.     

US host nationals' attitudes toward Japanese: the role of communication and relational solidarity in the intergroup contact hypothesis

Guided by the intergroup contact hypothesis and intergroup contact theory, the authors examined US Americans' (N=403) communication experiences and relational solidarity with their most frequent Japanese contact and associations with their attitudes toward Japanese as a cultural group. Structure Equation Modeling (SEM) results showed that both communication frequency and quality had an indirect effect through relational solidarity on affective, behavioral, and cognitive attitudes, demonstrating the critical mediating role of relational solidarity. Results also revealed that communication quality was positively and directly associated with the attitudinal measures. Implications of the findings are discussed with respect to prior literature on relational communication in intergroup and intercultural contexts.     

生态语言学角度下的双语现象浅析

生态语言学旨在把语言作为物种,研究其与环境之间的相互作用关系。从生态语言学角度可将双语现象解释为语言群体中多样化的语言使用导致了语际间的竞争和共存,造成语言的寄生和共生。双语现象在语言生态环境中形成的因素包括外在生态因素和内在生态因素,二者的共同作用导致两种不同的语言物种在语言群落中形成相互影响、互利共生的关系。     

An Examination of the Effects of Mediated Intragroup and Intergroup Interactions among Latino/a Characters

Content analytic work has consistently shown that Latinas are consistently found to be one of the most sexualized social groups in the media. In this study we experimentally examined the implications of exposure to the sexualized depiction of Latinas (among non-Latino viewers), when presented in the media in a within group context (Latina-Latino portrayal) and an intergroup context (Latina-White male portrayal). Findings suggest that when in an intergroup interaction, sexualized Latinas are evaluated more favorably and elicit less negative emotion than sexualized Latinas in an intragroup interaction. Implications are discussed within the context of mediated intergroup contact and intergroup emotion.     

Predicting student success in open and distance learning

This paper reviews some of the ways in which student success can be predicted in conventional and distance education. Predicting such success is particularly important for new students where the pre‐course start information available is sometimes slight and withdrawal often occurs very early in a course. It suggests that, in such cases, statistical methods involving logistic regression analysis are more useful than questionnaires or tutors’ opinions. Identifying students with low probability of success allows support to be targeted on them. However, there are ethical dilemmas to do with targeting support and openness with students about the results of any analysis.     

Is ‘Closing the Gap’ Enough? Ngarrindjeri ontologies,reconciliation and caring for country

This article is concerned with Ngarrindjeri nation building in the ‘contact zone’ with the Australian settler state by decentring the colonizer within a range of bureaucratic regimes. Ngarrindjeri engagement with natural resource and cultural heritage management will be used to illustrate the relationship between globalization, community governance, education, sustaining ‘culture’, Indigenous well-being, and reconciliation and its links to the Australian government Closing the Gap initiatives. This article connects Ngarrindjeri lived experience to the theorization of processes for self-recovery and social transformation that open possibilities for broad-based local and global coalitions, which include political solidarity in the interests of just Indigenous ‘reinhabitation’ and decolonization.     

Utopian totalism versus utopian realism: a reply to Darren Webb

Debate continues about the relationship between schools divided on ethno-religious lines and their implications for social cohesion. One argument against the existence of separate schools is that they limit opportunities for children from different groups to engage with each other, promoting intergroup suspicion and sectarianism. Using intergroup contact theory we examine the impact on outgroup attitudes of pupils attending mixed and separate post-primary schools in Northern Ireland. Data were collected through a survey of more than 3,500 pupils and analyses show that, irrespective of school type, intergroup contact at school is strongly associated with more positive orientations to the ethno-religious outgroup. The policy implications of these findings are discussed.