2阶子群均共轭置换的4p2及4pq阶群

子群H为G的共轭置换子群是指日满足对G中任意元素g均成立HgH=HHg，记为H〈c-pG．本文利用共轭置换来刻画2阶子群均共轭置换的有限群，得到具有该特性的4p2及4pg阶群的结构分类．     

Stochastic properties of the mixed accelerated hazard models

The accelerated hazard model in survival analysis assumes that the covariate effect acts the time scale of the baseline hazard rate. In this paper, we study the stochastic properties of the mixed accelerated hazard model since the covariate is considered basically unobservable. We build dependence structure between the population variable and the covariate, and also present some preservation properties. Using some well-known stochastic orders, we compare two mixed accelerated hazards models arising out of different choices of distributions for unobservable covariates or different baseline hazard rate functions.     

Being a desirable migrant: perception and racialisation of Icelandic migrants in Norway

In the aftermath of the financial crisis that hit Iceland in October 2008, increased numbers of Icelanders migrated to Norway to seek employment due to difficult economic circumstances in Iceland. Using critical perspectives from postcolonial studies and critical whiteness studies, the paper explores how these Icelandic migrants in Norway make sense of their new position as economic migrants within a global economy characterised by a growing sense of precariousness, while past inequalities and racism continue to matter. We also examine how these migrants are perceived in Norwegian media, and how social discourses of Icelandic migrants reflect larger Norwegian debates on racism, desirability and cultural belonging. Media discourses in Norway and interviews with Icelandic migrants reveal a hierarchy of acceptability of migrants. Icelanders are positioned as highly desirable compared to other migrant groups due to the intersection of perceived racial belonging, nationality and class. Our discussion contributes, furthermore, towards a critical analysis of the category migrant, by exploring how the term immigrant (innvandrer/innflytjandi) is used in narratives of Icelandic migrants in Norway and in Norwegian media discussions, showing the negative and racialised connotations of the term immigrant and how its understanding is linked with vulnerable positions and discrimination.     

国家的策略性:农业技术变迁中的政治因素——基于一个少数民族案例的研究

冬小麦推广是20世纪70年代西藏现代化的主要成就，小麦从少有种植一跃成为西藏第二大作物。令人困惑的是，藏族农民最初曾强烈抵制小麦，两三年后却又成了国家政策的积极实践者。在此过程中，国家如何消解农民的抵制，怎样改造他们的观念?基于档案和口述史材料，本文认为政治运动发挥了关键作用：第一，广泛开展的阶级斗争打击了对新技术的抵制，分化了基层社会，农民间的相互监督使"弱者的武器"成为不可能；第二，政治运动具有思想改造和情感动员功能，它将小麦塑造成解放的象征，激发了农民的政治认同和实践热情。但是，政治运动对生产也有一定负作用，冬小麦推广在20世纪70年代后期走上了"盲信政治、无视现实"的歧途即与此有关。     

Analysis of a two incongruent arrivals and services M/G/1 queue with random feedback

A queuing system with two incongruent arrivals and services is considered. Two kinds of customers enter the system by Poisson process and the service times are assumed to have general distribution. After first kind service completion, it may feedback to repeat the first service, leave the system or go to give second service. The same policy is applied for the other kind of customer. All stochastic processes involved in this system are independent. We derive the probability generating function for each kind and for the system that yield the performance measures. Some numerical approaches examined the validity of the results.     

Interlopers in class: A duoethnography of working‐class women academics

This article introduces the concept of the interloper for examining classed and gendered dislocation. Focusing on academia, which we view as a classed and gendered field, we draw on Bourdieu and feminist standpoint theory to account for how we, as women of working‐class origin, have experienced ‘breaches' through which we have come to understand ourselves in classed and gendered terms. Coming from different cultural backgrounds, we also reflect on how understandings of class are context‐specific. We employ a duoethnographic method which emphasizes the value of subjective experiences for organizational and social analyses. The article shows how the concept of the interloper may shed light on the dynamic, relational character of constructions of class and gender; the maintenance work that is performed; and how a sense of permanent inbetweenness characterizes our ongoing movement between the fields of the family and academia.     

Celebrating Joan Acker: Sociologist,fearless feminist,friend

Joan Acker's life reflects a time when middle‐class women were expected to be satisfied with maintaining the home front, serving husbands and children, not having paid‐work careers. After living “the ideal” for 37 years, Acker took a new path by earning a Ph. D. and producing path‐breaking scholarship that challenged taken‐for‐granted beliefs about gender, family, work, and organizations. Acker spoke “truth to power” and was an academic heroine in posing feminist challenges to injustices involving gender, social class, and race/ethnicity, particularly (but not solely) related to the workplace. This overview lets Joan tell her story and offers reflections on her milestone publications as seen by Pat Martin.     

习近平奋斗幸福观的理论内涵

奋斗幸福观是习近平新时代中国特色社会主义思想的重要组成部分，是马克思主义幸福理论的最好阐释和最新发展，它赋予了幸福历史的深度、时代的高度和现实的温度，具有深刻的理论内涵与丰富的理论意蕴。对其理论内涵的解读可从四个维度进行，从国内外双重视角分析奋斗幸福观的问题缘起，明确其现实必然性；从当前到长远把握奋斗幸福观的本真旨归，明晰其目标指向性；从个体到群体厘清奋斗幸福观的主体构成，阐明其全员参与性；从理想到现实确定奋斗幸福观的实践指南，剖析其路径协同性。奋斗幸福观深刻阐明了奋斗和幸福之间的辩证关系，具有强大的亲和力、凝聚力、生命力和战斗力，是全体中国人民获得幸福和过上美好生活的观念指引和行动指南，具有厚重而深远的历史意义和现实意义。