《析津志·名宦》史源考——兼考元初中书官员刘肃的官职

元末熊梦祥所撰《析津志》(现仅存辑佚本)的"名宦"部分,从木华黎到刘因等47人的记载,是从《元朝名臣事略》中辑录而得,二者之间存在史源关系。确立了史源关系后,进一步梳理其中的内容,发现《析津志》和《元朝名臣事略》对元初中书官员刘肃的官职记载亦有误,应为"左三部尚书"而非"右三部尚书"。深入考察后进一步发现,《元史·百官志》对元初左右三部设置时间的记载亦有误,应为中统二年,而非中统元年。     

纸质藏品修复用水考量

本工作借鉴已有的研究成果,并辅以相关调研,试图探究修复用水选择的重要性以及如何选择修复用水的问题。为此,通过对国内外文献的分析以及相关问题的调研,综述了生活饮用水中对纸张长期保存有害的污染物及其对纸张纤维的危害。通过对修复用水实例的讨论,指出:纸质藏品的修复须采用净化水,即通过逆渗透、去离子处理等方法净化后并达到一定电阻率的纯水,在条件许可的情况下,采用电阻率更高的超纯水更好;须现制现用以保证使用过程中净化水不被再次污染;在设备方面,选择小型纯水系统更能保证用水质量。     

中国钱币的内涵

中国钱币的内涵是什么？它所包涵的内容涉及的范围该作如何界定,对于钱币学来说是一个基本概念,似乎不难解释,但事实上,我们的钱币爱好者、收藏者未必都清楚,即使是专业人员、专门的研究人员说法也未必一致,而作为一门学科——中国的钱币学,必须对它有一个完整的诠释。     

Estimating the number of components in an OSL decay curve using the Bayesian Information Criterion

The optically stimulated luminescence (OSL) decay curve is assumed to consist of a number of first-order exponential components. Improper estimation of the number of components leads to under-or over-fitting of the curve under consideration. Hence, correct estimation of the number of components is important to accurately analyze an OSL decay curve. In this study, we investigated the possibility of using the Bayesian Information Criterion to estimate the optimal number of components in an OSL decay curve. We tested the reliability of this method using several hundred measured decay curves and three simulation scenarios. Our results demonstrate that the quality of the identification can be influenced by several factors: the measurement time and the number of channels; the variability of the decay constants; and the signal-to-noise ratios of a decaying component. The results also suggest that the Bayesian Information Criterion has great potential to estimate the number of components in an OSL decay curve with a moderate to high signal-to-noise ratio.     

商业文化与民族饮食文化——以土家烧饼为例

一、土家烧饼风靡全国2005年,一种名叫“土家烧饼”的风味小吃风靡全国,似乎一夜之间遍及各地的大街小巷。“土家烧饼”来自湖北土家族的聚集地恩施,土家人结合自己的饮食习惯,做成别具风味的表面撒有馅料的圆形烤饼。自2005年5月第一家土家烧饼店在武汉出现至今,土家烧饼已由我国的西部逐渐向东扩张。这些“土家烧饼”店无一例外地有着相似的店铺装饰,翠竹、红线、簸箕等“土家族”店面装饰元素;叫着相似的店名:“土家族烧饼”、“土老冒烧饼”、“土家烧饼大王”、“掉渣烧饼”、“土掉渣烧饼”、“掉馅的烧饼”、“土家西施烧饼”等。短…     

20世纪初英国的社会改革及其影响

20世纪初,在英国自由党的支持和推动下,英国政府进行了一系列旨在减少贫困、缓解矛盾的社会改革,推出了养老金条例和国民保险法案,调节了社会各阶层之间的关系,打下了社会保障的基础,从而对20世纪英国社会的发展产生了深远的影响.     

云梦秦律新解(六则)

本文对云梦睡虎地秦墓出土的秦律文献中六处简文提出不同于睡虎地秦简整理小组注译的解读意见,重新探讨秦人的立法意图,寻求揭示秦法制相关内容的历史真实。     

Calibration and Test of a Discrete Choice Model with Endogenous Choice Sets

Conventional discrete choice models assume implicitly that the choice set is independent of the decisionmaker's preferences conditional on the explanatory variables of the models. This assumption is implausible in many choice situations where the decisionmaker selects his or her choice set. This paper estimates and tests a discrete choice model with endogenous choice sets based on Horowitz' theoretical work. To calibrate the model, a new probability simulator is introduced and a sequential estimation procedure is developed. The model and calibration methods are tested in an empirical application as well as Monte Carlo simulations. The empirical results are used to test the theory of endogenous choice sets and to examine the differences between the new model and a conventional choice model in parameter estimates and predicted choice probabilities. The empirical results strongly suggest that ignoring the endogeneity of choice sets in choice modeling can have serious consequences in applications.     

我国各级中心城市界定的方法与实践

提出了中心城市的内涵与判定方法, 运用复合指标法测定了全国中等以上城市和各省域及９ 大经济区的实力指数,判定了地区级、省级、大区级和全国性中心城市。     

洛阳新发现西汉画像砖

1996年洛阳市第二文物工作队征集一批汉画像砖.画像依题材分为10种,有车骑出行、山林狩猎、凤鸟与人物、兽斗、驯虎、龙、蟾蜍、玉兔、西王母等.画像砖时代为西汉晚期.这批汉画像砖的发现,为研究洛阳地区的汉画像砖艺术提供了新资料.