自驾偏好、居民异质与居住选址——基于单中心城市模型的空间均衡分析

基于线性单中心城市模型，研究了自驾偏好和居民拥有车辆异质性对双方式交通走廊沿线居民出行方式选择和居住区位选址均衡的影响.将有车居民对自驾出行的偏好集成到直接效用函数中，建立了空间均衡模型.分析发现，当城市居民全部自驾出行时，租金-距离可能呈现先提高后降低的趋势.考虑只有部分居民拥有自驾车辆的一般情形，推导出了有车和无车居民在城市走廊沿线居住分布的不同均衡模式.通过理论解析，进一步考察了小汽车保有量和城市居民数量的变化对城市空间结构和居民效用水平的影响.     

No Expo Network: a failed mobilization in a post-political frame

In 2015 Milan hosted the Universal Exposition with the theme ‘Feeding the Planet, Energy for Life’. Even if characterized by various scandals and problems, the edition was narrated by the mainstream media as a political and economic success. Critical voices were almost completely obscured by favorable propaganda and the ideas of development and the future proposed by the Expo rhetoric was presented as inevitable, configuring ‘the best of all possible worlds’ in a more general post-political frame. In this profile I first present the main characteristics of the No Expo Network, e.g. the actors that composed it and the main critiques that they advanced. I will then focus on the reasons for its defeat, which is then contextualized in relation to the election of the Chief Executive Officer of Expo 2015 as new Mayor of Milan. Here, we can see the continuation and structural strengthening of the neoliberal politics of Expo2015 beyond the mega event itself.     

情境植入视角下第三人称指称形式的所指定位

由于第三人称不是言语交际的直接参与者,其指称形式的所指定位存在诸多复杂的情况。基于Langacker的情境植入理论,分析探讨英汉日常语言中第三人称指称形式所指定位的认知规律。研究发现,英汉日常语言中第三人称指称形式的所指会在形态、语义及范畴层次等方面发生变化,其具体定位需通过话语参与者共建话语框架并进行认知加工才能得以完成。     

基于ANSYS的行李车改造成发电车的车架设计与分析

现代设计方法的发展和使用，使铁路车辆设计变得越来越快速高效。在行李车改造为发电车过程中，首先根据车架结构对车厢进行布局设计，其次运用有限元分析软件ANSYS对改造后的车辆车架系统从强度和刚度方面进行计算和分析。然后根据分析结果，使用APDL语言对车架薄弱环节和不合理结构进行改进。最后，对改造后车架进行模态分析和谐响应分析，确定有害频率和振型，并采取有效减振措施。从研究结果看，改造后的车辆车架能达到安全使用的设计目的。     

民间动物造型艺术与民俗活动

民间动物造型不仅是一种民间美术,更是于广阔的社会生活层面上显示的一种民间文化现象.它的存在和发展与丰富的民俗活动紧密联系着,本文主要分析了民间动物造型艺术与生产民俗、人生礼仪民俗、信仰民俗和装饰游艺民俗的关系.     

以目的与背景知识为双条件的逻辑AKC

首先,我们构造以目的和背景知识为双条件的条件句系统AKC,给出它的一些证明论结果。其次,我们引入有序邻域语义,给出描述AKC的特征公理和推理规则的框架条件,证明AKC相对这些框架条件是框架可靠的。最后,我们证明AKC相对这些框架条件也是框架完全的。     

“物体—性状”认知框架及相关语法现象

物体—性状框架是人类认知框架中最为基本的一个。很N合格的必要条件是:第一,N必须具有可被激活的非单一的性状特征;第二,在已有的认知概念系统中,还未形成能够涵盖N的全部性状特征的概念。名词和形容词互转的语义基础是物体—性状之间相互关联。人类遵循物体→性状的认知顺序,该认知顺序投射到人类语言中,即为名词——形容词的发生顺序。     

强化学习型匝道控制模型的研究

高速公路上的交通堵塞造成了道路利用效率低下，并伴随着能源消耗和环境污染问题，因此各种各样的高速公路控制方法应用于缓解交通堵塞。本文提出强化学习型匝道控制模型，该模型以交通流模拟为预测工具，以人工智能的强化学习为最优化选择模型，并具有一定的自主性、有记忆功能和性能反馈功能，且是一种动态的过程。应用JAVA针对不同的交通状态进行模拟再现，模拟结果表明匝道控制模型对于减少交通堵塞具有显著的效果。     

Predictors of college-student food security and fruit and vegetable intake differ by housing type

ABSTRACT

Objective: We assessed whether college-student characteristics associate with food security and fruit and vegetable (FV) intake and whether these associations differ in students in housing with and without food provision. Participants: 514 randomly-sampled students from a large, Midwestern, public university in 2012 and 2013 Methods: Ordered logistic regression tested how student characteristics associate with food security. Linear regression tested how student characteristics associate with FV intake. Analyses were stratified by housing type – that is, housing with food provision (dormitory, fraternity/sorority house, cooperative) vs. housing without food provision.Results: Only among those living in housing without food provision, males (p = 0.04), students without car access (p = 0.005), and those with marginal (p = 0.001) or low (p = 0.001) food security demonstrated lower FV intake. Conclusions: Housing with food provision may buffer the effects of student characteristics on food.     

Socialities in Motion: Automobility and Car Cruising in Iceland☆

Abstract

Car cruising is a common phenomenon around the globe. In Iceland, the activity is a major assimilative sociocultural phenomenon for young people and especially for novice drivers. This article documents car cruising in Iceland and contextualizes it within discussions of automobility. It is based on semi-structured, ‘on the move’ interviews taken with people during cruising. Participants were also asked to take pictures of their cruising activities. It seems that car cruising is an opportunity for young people to integrate themselves into the systemic regime of automobility. This shows the importance of socialities when it comes to individual practices and expressions of automobility, but also the structuring role of those socialities. The paper also elucidates how that activity impacts upon spaces. It demonstrates that it is intimately connected with human territoriality, or how young drivers appropriate and influence the spaces and places of automobility and ultimately contribute to their production and reproduction, thus sustaining the systemic regime of automobility.