Labour flexibility in export horticulture: a case study of northeast Brazilian grape production

This article analyses the nature and extent of labour flexibility, defined as lack of permanent and secure employment contracts, within an emerging export horticulture sector in northeast Brazil. Whilst much has been written about flexible employment systems in agriculture, it is important to show exactly why, how, and to what extent these systems are flexible, and conversely, what kinds of strategies and practices are available to workers to ameliorate their conditions within such systems. This article illustrates how a combination of processes – farms' ability to produce two harvests per annum, northern retailers' increasing demands for product quality, employers' requirements for relatively skilled labour, and workers' ability to organise and extract concessions from employers – contribute, within the conditions of the São Francisco valley, to specific labour regimes and forms of labour flexibility.     

Contested paradigms of ‘viability’ in redistributive land reform: perspectives from southern Africa

This article reviews some of the salient aspects of the controversy over capitalism and the fate of Russian peasantry, among the Russian Marxists and the narodniks immediately prior to and after the Bolshevik revolution. At issue was the characterization of peasant economies. The narodniks believed that neither marginalism nor Marxism fully captured the nuances of peasant agriculture and the economic system/systems that evolved out of it; neither the market model nor class analysis adequately described the allocative and distributive processes in such economies. While nineteenth-century narodniks stressed the role of institutions based in the village community, Chayanov's twentieth-century populism stressed the organizational dynamic of peasant households within an institutional framework. Accordingly, the economics of the Chayanovian interpretation are examined from an institutional and organizational perspective. Such an exercise, it is argued, lends more credibility not only to the narodnik agenda, but also to the peasantist model of development.     

Like a Deer in the Headlights: The Paralysis of Stuckness

When describing how they experience moments of not-knowing, youth workers often talk about a sense of paralysis, as though their uncertainty becomes physically constraining. This chapter describes the first of five themes associated with youth workers' experiences of not knowing what to do: the paralysis of stuckness. In addition to describing and investigating the dominant theme of paralysis, this chapter discusses its three variations, as described by youth worker participants: (a) It's just me, and that's not enough, (b) It's like a mental freefall, and (c) That crushing becomes your world.     

我国公民非法出入境的形态、特征及防治

非法出入境的犯罪行为严重损害了国家的声誉和国际形象,给我国的政治、经济和社会治安带来了很大危害。目前对非法出入境的治理认识不足,基础工作薄弱,预防打击不力,各有关部门权责不明,尚未形成有效合力。为此,必须通过改革建立适合我国国情的治理机制,加强内外合作,有效治理和打击非法出入境犯罪活动。     

论物证理化检验中的种属认定和同一认定

传统的观点认为物证理化检验只能进行种属认定。物证理化检验中的种属认定和同一认定仅仅是依据了不同层次的物证反映体所导致的来源(或个体)同一认定范围上的区别。随着科学技术的发展和人类认识世界能力的不断加强,物证理化检验一定可以实现从种属认定向同一认定的转化。必须坚持物证检验与案件性质和侦查过程相结合的方法,以促使物证理化检验中的种属认定转变为事实上的同一认定。     

新生猪胰腺干细胞培养方法的建立

通过对不同饲养层和培养基以及细胞因子进行筛选,比较了各种培养基和细胞生长因子对细胞传代时间和增殖细胞比例的影响,选择最佳分离条件,建立了新生猪胰腺干细胞体外培养的最佳体系。结果显示,以成纤维细胞为饲养层,在含100 mL/L胎牛血清的L-DMEM中添加表皮生长因子、干细胞因子、白血病抑制因子的培养液中培养,细胞能快速增殖,多突起、多角形、小圆形、长梭形4种类型干细胞的增殖比例适中,而且各种类型的细胞都能长期传代培养。