Waste’s dominion: the gymnastics of value in informal markets*

Abstract

This paper examines sites of informal trade in Morocco, what the locals call joutiat (sing. joutia). It departs from the semantic and real-world politics of disposability (of objects and people), to unravel the underlying meanings of the joutia as a contested space. The joutia is a place where not only objects of value wait to be rediscovered, but also where invisible and socially underprivileged beings perpetually ransack heaps of trade articles to unmask a hidden gem. I provide an account of the social dynamics of abjection inside/outside the joutia, arresting the ambivalence of objects, which – as they keep vacillating between value and lack of it – turn into “treashure”. I use this neologism, which combines two antithetical terms (trash and treasure), to (a) put into question issues of visibility and invisibility in informal Moroccan enterprises, (b) crystallise the paradoxes of being and becoming inside and outside the market arena, (c) offer a profound reflection on the absurd nature of value in the informal landscapes of (non)random economy and (d) demonstrate that the forms of abjection inside the market have their origin elsewhere.     

A new estimation method for Weibull-type tails based on the mean excess function

Studying the right tail of a distribution, one can classify the distributions into three classes based on the extreme value index γ$\gamma$. The class γ>0$\gamma >0$ corresponds to Pareto-type or heavy tailed distributions, while γ<0$\gamma <0$ indicates that the underlying distribution has a finite endpoint. The Weibull-type distributions form an important subgroup within the Gumbel class with γ=0$\gamma =0$. The tail behaviour can then be specified using the Weibull tail index. Classical estimators of this index show severe bias. In this paper we present a new estimation approach based on the mean excess function, which exhibits improved bias and mean squared error. The asserted properties are supported by simulation experiments and asymptotic results. Illustrations with real life data sets are provided.     

On the stability of the risk hull method for projection estimators

We consider in this paper the regularization by projection of a linear inverse problem Y=Af+εξ$Y=\mathit{Af}+\epsilon \xi$ where ξ$\xi$ denotes a Gaussian white noise, A   a compact operator and ε>0$\epsilon >0$ a noise level. Compared to the standard unbiased risk estimation (URE) method, the risk hull minimization (RHM) procedure presents a very interesting numerical behavior. However, the regularization in the singular value decomposition setting requires the knowledge of the eigenvalues of A$A$. Here, we deal with noisy eigenvalues: only observations on this sequence are available. We study the efficiency of the RHM method in this situation. More generally, we shed light on some properties usually related to the regularization with a noisy operator.     

为文不惟怜风月 一枝一叶总关情——浅谈恰白·次旦平措与新时期初的西藏文学

恰白·次旦平措先生的文学创作,始终浸透着对现实的强烈关怀和热情赞颂以及对历史本身的深入感悟,是现实主义精神的体现,也是历史沉思的诗性表达,在内容上,其作品突破宗教拘囿、古典规限,涌动着个人的真实体验与现代气息,予以人积极、乐观,宏大、壮丽的审美观感.其作品既是其对历史发展、社会实践的自觉意识的反映,也是其人文主义、朴素唯物主义思想的审美表现.     

苏霍姆林斯基论校长素质及其现实价值

实施素质教育需要高素质的教育工作者,尤其需要高素质的校长。苏霍姆林斯基认为校长应具有正确的教育思想、坚定的优师理念、笃深的职业情感、渊博的文化知识、精湛的指导艺术和强烈的科研意识,这在实施素质教育的大背景下,对于强化校长素养,优化管理行为,具有特别重要的指导价值。     

城市工业文化遗产保护与利用泛论

保护利用工业遗产,可谓善待社会历史资源、改善城市空间环境、保持城市生机魅力与原真印记的科学文明之举。作为我国南方工业重镇,广州应借鉴国内外的先进经验,创建自己的经典范例。     

The time‐dependent “cure‐death” model investigating two equally important endpoints simultaneously in trials treating high‐risk patients with resistant pathogens

A variety of primary endpoints are used in clinical trials treating patients with severe infectious diseases, and existing guidelines do not provide a consistent recommendation. We propose to study simultaneously two primary endpoints, cure and death, in a comprehensive multistate cure‐death model as starting point for a treatment comparison. This technique enables us to study the temporal dynamic of the patient‐relevant probability to be cured and alive. We describe and compare traditional and innovative methods suitable for a treatment comparison based on this model. Traditional analyses using risk differences focus on one prespecified timepoint only. A restricted logrank‐based test of treatment effect is sensitive to ordered categories of responses and integrates information on duration of response. The pseudo‐value regression provides a direct regression model for examination of treatment effect via difference in transition probabilities. Applied to a topical real data example and simulation scenarios, we demonstrate advantages and limitations and provide an insight into how these methods can handle different kinds of treatment imbalances. The cure‐death model provides a suitable framework to gain a better understanding of how a new treatment influences the time‐dynamic cure and death process. This might help the future planning of randomised clinical trials, sample size calculations, and data analyses.     

All for one or one for all? Authorship and the cross-sectoral valuation of credit in nutrition science

The passionate pursuit of authorships is fuelled by the value they represent to scholars and scientists. This article asks how this value differs across scientists and how these different processes of valuation inform authorship articulation, strategies, and publication behavior in general. Drawing from a qualitative analysis of authorship practices among nutrition scientists employed at universities, contract research organizations, and in food industry, I argue that two different modi operandi emerge when it comes to authorship. These different ways of working produce different collaborative approaches, different credit distribution strategies amongst collaborators, and different value placed upon (the pursuit of) authorship. These different valuation processes are neither explicit nor recognizable to those reading (and judging) author lists. As a consequence, in the politics of authorship, the names standing atop a scientific publication in nutrition science represent different types of value to both the individuals and employing organizations.     

诸神之争的再阐释:一个社会学的结构视角

世俗化及逆世俗化范式的对立其实蕴含着更大的连续性,即如何理解宗教多元主义背后的诸神之争,总的来说,韦伯之后那些解释宗教变迁的理论范式均未突破韦伯对宗教的比较研究范畴,难以在当前复杂而多元的文化环境下为个人提供总体指导,但是二者共同揭露了诸神之争条件下西方宗教工具理性和价值理性交互作用所促成的理性化的动力机制,即西方宗教维护自身价值理性的方式从中世纪教会主导的政治性垄断过渡到现代性条件下宗教多元主义的市场化竞争。     

A social welfare perspective of market‐oriented social enterprises

The article analyses market‐oriented social enterprises from a social welfare perspective, within the context of the innate conflict between business and welfare orientations. After defining the concept of market‐oriented social enterprises and presenting some successful examples on such entities that employ different marginalised populations, particularly people with disabilities, the article asks three interrelated questions: (i) What policy environment is needed to encourage the development of social enterprises? (ii) Given the innate tension between the social and economic objectives in social enterprises, what structural principles are needed to enable them to meet those dual objectives? Lastly, (iii) What intervention modalities are best suited to help individual participants in those frameworks? Answers to these questions are discussed within conceptual frameworks from the worlds of welfare and business that jointly provide a base for a social welfare rationale for market‐oriented social enterprises.