Dynamic Pricing to Minimize Maximum Regret

We consider a dynamic pricing problem that involves selling a given inventory of a single product over a short, two‐period selling season. There is insufficient time to replenish inventory during this season, hence sales are made entirely from inventory. The demand for the product is a stochastic, nonincreasing function of price. We assume interval uncertainty for demand, that is, knowledge of upper and lower bounds but not a probability distribution, with no correlation between the two periods. We minimize the maximum total regret over the two periods that results from the pricing decisions. We consider a dynamic model where the decision maker chooses the price for each period contingent on the remaining inventory at the beginning of the period, and a static model where the decision maker chooses the prices for both periods at the beginning of the first period. Both models can be solved by a polynomial time algorithm that solves systems of linear inequalities. Our computational study demonstrates that the prices generated by both our models are insensitive to errors in estimating the demand intervals. Our dynamic model outperforms our static model and two classical approaches that do not use demand probability distributions, when evaluated by maximum regret, average relative regret, variability, and risk measures. Further, our dynamic model generates a total expected revenue which closely approximates that of a maximum expected revenue approach which requires demand probability distributions.     

科学发展观的法学解读

科学发展观的核心与灵魂是以人为本。同时,科学发展观与依法治国也是紧密相关的,科学发展观是依法治国的思想武器,依法治国是贯彻科学发展观的重要保障。科学发展观对依法治国的理论与制度创新提出了新的要求,它要求法学创新要坚持中国特色、中国风格和中国气派。     

甘南藏族语言文字使用情况问卷调查分析——基于寺院和学校的对比研究

文章以甘南藏族寺院和学校的田野调查资料为基础,对当地的语言文字使用情况及其成因进行了描述与分析,指出近些年当地藏族居民对藏、汉两种语言的使用水平发生了很大变化,藏语的社会功能减弱,语言传承断代和语言转用现象突出.     

剥夺还是赋予:刑事被迫诉人诉权研究

诉权是提起诉讼的权利,其实质是司法保护请求权.在权利易受权力侵害的刑事诉讼中,赋予被追诉人享有诉权有正当性基础.在我国,刑事被追诉人面对自己权利遭受国家权力不法侵害却不能直接以行使诉权方式请求法院救济,这不论是对权利保护还是对防范权力滥用都极为不利.为此,有必要赋予被追诉人享有诉权,这对于我国法治建设有重要意义.     

金仲华媒介批评实践及其艺术特色论略

金仲华注重从社会环境制约的角度分析黄色新闻的流行;他认为报纸副刊有所发展固然是因文字轻松有趣可以调剂读者的阅读趣味,但也与重要新闻报道桎梏太多有关;记者被称为无冕之王,其实没有多少新闻自由。他在批评我国报纸上的国际新闻时,指出国际新闻中充满着国际各种政治力量的角力,提醒读者要注意文字背后的内容。他强调阅读战争新闻要有一双新闻眼,而培养新闻眼需要从知识和技术两个方面着手。具有较为明确的媒介批评意识、知识性强、注重从政治和经济制度的视角去分析、注重数据和实例、从媒体的实然和应然状态之间的差距去透视、客观辩证,是金仲华媒介批评的主要特点。     

市级政府规模的影响因素实证分析——以安徽省为例

以安徽省16个地级市为研究样本,将其分为皖中、皖南和皖北3个区域,分别考察其政府规模变动的影响因素及影响程度。研究表明,财政分权、地方竞争、经济发展水平和贸易开放程度这四个因素对不同区域存在着不同影响;基于以上研究结果,提出了优化安徽省地级市政府规模的相关建议。     

叙事学研究的空间转向

叙事学研究既存在一个时间维度,也存在一个空间维度。但在传统的叙事学研究中(无论是经典叙事学,还是后经典叙事学),人们都有意无意地忽视了后者。现在,叙事学是到了该重视空间维度上的研究的时候了。本文指出叙事学在今天面临一个“空间转向”问题,并从理论和创作实践两方面,分析了“空间转向”的知识和文化背景。最后,文章还从叙事活动、叙事作品、阅读活动等三个方面,分析了空间叙事学的问题域,认为空间叙事学的研究领域是非常宽广的。     

文化格局变化的政治思考

本文论述文化格局的变迁是社会利益关系调整的深刻反映,必然对社会政治经济的稳定与发展产生重大影响。     

Urban–Rural Disparities in Informal Care Intensity of Adult Daughters and Daughters-in-Law for Elderly Parents from 1993–2015: Evidence from a National Study in China

Social Indicators Research - The Chinese population is ageing and the burden of caregiving for elderly on society is getting heavier. With formal long-term care system underdeveloped, informal care...