World Oil Depletion Models: Price effects compared with strategic or technological interventions

World oil depletion, including natural gas liquids, was modelled in the past by many authors. Recently, Guseo and Dalla Valle have introduced and Guidolin has applied a new approach following perturbed life-cycle diffusion models. Here we examine joint effects of economic and strategic or technological interventions using a Generalized Bass Model (GBM). Statistical analysis takes into account three different hierarchical levels: natural diffusion, long memory interventions and stochastic components. The main results confirm the statistical significance of historical 1970s shocks and highlight a strong long memory effect due to an increase in oil production after World War II. The estimated peak-date, 2007, and the 90% depletion time, 2019, are determined under an equilibrium intervention hypothesis.     

Competitive supply behavior when price information is fuzzy

The theory of fuzzy sets is applied to the output decisions of a price-taking firm facing imprecise information about expected future prices. Accepting risk resulting from the randomness of prices, the manager is interested in expected profits only. Since the set of possible expected-price vectors is fuzzy, a suitable defuzzification strategy is defined in analogy to the pessimism-optimism index proposed by L. Hurwicz. It depends on the manager's willingness to accept surprises resulting from a deviation of the true expected prices from the values that guided output decisions. Despite a linear cost function, well specified solutions to the optimization problem are possible without resorting to capacity constraints.     

我国旅游价格管理：现状、改革背景与政策分析

旅游业发展是一项复杂的系统工程，需要各相关行业和各项政策措施的配套协调。由于旅游价格的杠杆效应，如何应对入世给我国旅游业带来的挑战，改革并完善与国际接轨的旅游价格管理新体制是每一个旅游价格管理工作者应当思考的现实问题。     

会计信息质量与市场定价分析

本文以应计质量、盈余持续性、盈余可预测性、盈余平滑度作为会计信息质量的代理变量,通过研究会计信息不同纬度的质量与权益资本成本之间的关系,为投资者的市场定价及对信息质量的关注程度提供证据。研究结果表明,除盈余的持续性不显著外,其他各项质量与权益资本成本之间均呈负相关关系;在对权益资本成本的影响程度方面,无论是单独影响还是条件影响,应计质量影响程度最大,其次是可预测性。     

市政工程项目管理中界面管理理论的应用研究

市政工程项目是城市基础设施建设中的关键内容,随着当下城市发展速度在不断加快,市政建设中对施工效率与质量的要求也越来越高,所以加强各施工环节、施工部门等有效信息与资料对接更显重要。界面管理理论应用到市政工程项目管理工作中,能够有效提高施工内与施工外各环节、各部门、各组织之间的矛盾解除以及沟通加深,有助于施工高效进行。     

International Comparisons of Australia's Infrastructure Performance

International benchmarking has played a key role in the reform of Australia's infrastructure industries by promoting indirect or yardstick competition, in highlighting the need for further reform and building a consensus for implementing necessary changes. The international benchmarking of infrastructure performance by the Bureau of Industry Economics (BIE) between 1991 and 1996 did much to focus attention on the need for change. The BIE examined the performance of eight infrastructure industries relative to international best practice: electricity, rail freight, telecommunications, the waterfront, road freight, coastal shipping, aviation and gas supply. Performance comparisons concentrated on indicators of price, service quality, labour productivity and capital productivity. This paper reviews and summarises the performance comparisons the BIE undertook over the last three years of its infrastructure benchmarking program. The BIE international benchmarking program provides a useful role model for other countries wanting to seriously pursue reform of their infrastructure industries.     

物流工程课程体系探讨

随着物流产业的快速发展，社会十分需要物流管理专业和物流工程专业本科人才。物流涉及的领域很多，有物流管理、物流系统规范、物流经济、物流信息化、物流机械、物流设施、物流自动化等。其中，物流管理专业主要偏重研究物流管理、物流系统规范、物流经济、物流信息化等领域，物流工程专业主要偏重研究物流系统规范、物流机械、物流设施、物流自动化等领域。本文根据社会需要，对物流工程人才培养的课程体系进行了探讨与研究。     

含价格折扣、允许缺货的两级供应链库存模型

研究一个供应商、多个销售商组成的两级供应链库存系统,针对具有价格弹性的市场需求、含有价格折扣、允许供应商和销售商产生缺货以及满足供应商和销售商Pareto有效性的情况,建立了使供应链系统整体盈利最大的存贮模型。并结合算例分析了价格弹性因子对系统盈利水平的影响。     

对企业技术创新自我实现的经济学分析

本文从经济学的理论角度分析了企业技术创新自我实现的可能性。分析发现：产品被成熟生产后的产量与资本报酬和资本边际生产率的大小有直接关系。因此，企业发展内部本身就可以通过市场供需调节来实现创新的循环和延续。从这一点上说，国家对于企业技术创新的鼓励政策应该更加依靠市场机制的作用。     

城市土地价格波动对房地产业的影响——1999～2005年中国20城市的实证分析

本文利用1999～2005年间的数据对我国地价与房价的关系进行了实证研究.研究结果表明房价对地价有显著影响,地价对房价的影响度较小.在对地价与房价互动传导机制进行研究时,提出了3个传导路径,这些路径上的各个变量大都相互影响.通过分析我们还发现金融支持和土地政策在地价与房价变动中扮演着重要角色,抑制房价不能只控制土地价格,还应从金融支持、投资等方面着手,制定更严格的信贷制度,增加房地产交易税和提高居民可支配收入.本文的研究对于政府制定正确的货币政策和房地产业政策具有积极的参考意义.