Banach空间中广义特征函数的性质及应用

本文深入研究Banach空间广义特征函数的基本性质,并用实例说明在刻划Banach空间几何特征方面广义特征函数所起的作用。     

Polluted Leisure

Abstract

Leisure now involves becoming-with pollution. In this article, I work with the concept of “polluted leisure” to better understand and respond to the enmeshment of pollution and leisure in late capitalist societies. Pollution and leisure are argued to be mutually shaping. Evidence for the argument is provided through a pilot study of “intoxicated” surfers at a postindustrial site. The study proceeds through a more-than-human paradigm. Nonhuman and material agencies are fused with socio-economic (specifically capitalism) and human subjectivity issues, for example, gender (specifically masculinity). A “wet ethnography,” an experimental multimedia transdisciplinary methodology, is employed to notice and articulate the dynamic complexity. It is concluded that the busyness of pollution complicates leisure discourses that bifurcate nature and society, natural and artificial, subject and object that shape environmental politics, sustainability efforts, and notions of wellbeing achieved through encounters with Blue Spaces.     

Quasi-Monte Carlo methods with applications in finance

We review the basic principles of quasi-Monte Carlo (QMC) methods, the randomizations that turn them into variance-reduction techniques, the integration error and variance bounds obtained in terms of QMC point set discrepancy and variation of the integrand, and the main classes of point set constructions: lattice rules, digital nets, and permutations in different bases. QMC methods are designed to estimate s-dimensional integrals, for moderate or large (perhaps infinite) values of s. In principle, any stochastic simulation whose purpose is to estimate an integral fits this framework, but the methods work better for certain types of integrals than others (e.g., if the integrand can be well approximated by a sum of low-dimensional smooth functions). Such QMC-friendly integrals are encountered frequently in computational finance and risk analysis. We summarize the theory, give examples, and provide computational results that illustrate the efficiency improvement achieved. This article is targeted mainly for those who already know Monte Carlo methods and their application in finance, and want an update of the state of the art on quasi-Monte Carlo methods.      

浙江企业与美国企业在知识技术密集产业合作空间分析

本文从高新技术制造业、知识密集型服务业、知识型服务外包、产业技术创新(R&D)转移四个方面分析了美国企业与浙江企业可能进行的合作空间,并进一步提出了浙江承接美国高知识技术密集产业国际转移和国际科技合作的对策。     

Pricing Discrete European Barrier Options Using Lattice Random Walks

This paper designs a numerical procedure to price discrete European barrier options in Black-Scholes model. The pricing problem is divided into a series of initial value problems, one for each monitoring time. Each initial value problem is solved by replacing the driving Brownian motion by a lattice random walk. Some results from the theory of Besov spaces show that the convergence rate of lattice methods for initial value problems depends on two factors, namely the smoothness of the initial value (or the value function) and the moments for the increments of the lattice random walk. This fact is used to obtain an efficient method to price discrete European barrier options. Numerical examples and comparisons with other methods are carried out to show that the proposed method yields fast and accurate results.     

清洁技术领域风投资本驱动与贷款担保政策

各国政府日益重视风险资本在清洁技术领域内的投资,美国甚至针对该领域企业提供巨额贷款担保。本文分析了风险资本开辟新经济空间的三大边界条件,并以此分析清洁技术领域风险投资的有效性。结果表明,该领域内边界条件并不满足,巨额贷款担保政策可能难以产生预期效果,而诸如创新商业化支持计划、产业补贴、价格激励和政府采购等政策,则可在不扭曲市场过程的前提下,更好地激励清洁技术企业成长和技术创新。     

陆海统筹优化国土空间开发战略布局

构建陆海开放型国土开发综合格局要强化“三纵四横”轴线的支撑作用,加强沿边沿海对外开放开发平台建设,积极谋划建设南海海上开放开发经济区。实施沿海地带发展空间布局调整要优化以城市群为支撑的沿海地带综合布局、优化海岸带资源开发和产业布局、协调港-城-园发展关系,推动渤海、黄海、东海、南海海域开发空间布局优化。     

Experiencing a New Place as an Atmosphere: A Focus on Tours of Collaborative Spaces

In this article, we ethnographically explore how tour guides convey different embodied experiences of space and place during tours of collaborative spaces. These tours draw on participants’ embodied experience and emotions in order to reveal the invisible dimensions of everyday activities of collaborative spaces, in particular their different organizational atmospheres. By systematically coding 110 tours of such spaces, we identify four emotional registers – “initiation,” “commodification,” “selection,” and “gamification,” which are used by tour guides to produce a particular atmosphere. We feel that the concept of “atmosphere” is a powerful means of exploring the unbounded and fluid spatiality, the quasi-materiality, and the temporality of the work practices that individuals are likely to experience if they become members of these collaborative spaces. We conclude our analyses by considering the implications of this study for the management of collaborative spaces and new work practices more generally.     

Serving Time: Volunteer Work,Liminality and the Uses of Meaningfulness at Music Festivals

Drawing from a participant‐observer study of volunteering in the context of UK music festivals, we examine how the sense of meaningfulness and community relate to instrumental goals of consumption and efficiency. We argue that the liminal nature of the festival setting supports an ambivalence in which meaningfulness is established through constructions of community, while the commodification of community feelings leads to heterogeneous understandings of the work setting. Our findings reveal heterogeneous ways in which work was rendered meaningful by festival volunteers, ranging from (1) A commodity frame, characterizing work as drudgery seeking ‘fun’ through consumption (2) A ‘communitas’ frame, emphasizing a transcendental sense of collective immediacy and (3) A cynical frame, where communitas discourse is used instrumentally by both managers and workers. We discuss meaningful work as caught between creative community and ideological mystification, and how alternative workspaces vacillate between emancipatory principles of solidarity and neo‐normative forms of ideological control.