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。     

汉冶萍公司的钢铁销售与我国近代钢铁市场（1908-1927）

汉冶萍公司改制组建以来,其产品销售机构和规章制度逐步完善,并多方开展了营销活动;在钢铁煤焦矿石各种产品销售中,钢铁销售收入占据重要地位,构成公司运转常年经费开支的主要来源;但当年国内市场十分狭小,钢铁销售既被外国列强挤压,又受国内政府挟制（主要在钢轨销售方面）;而在国外主要对日销售中,更遭其百般盘剥打击,致使我国惟一一个钢铁煤焦联合企业被迫沦为单纯为其供给铁矿石的开采机构。     

编纂《高安市政协志》的思考与追求

本文重点探讨了4个问题:篇目设计、人物入志、资料性与著述性的统一、提高质量。     

纪念满文创制410周年会议综述

2009年11月19日到11月21日,由北京市社会科学院与中国第一历史档案馆联合主办,北京市社会科学院满学研究所偕同中国第一历史档案馆满文处承办的"纪念满文创制四百一十周年"学术研讨会在北京郊区的蟹岛生态农庄会议中心隆重召开并取得圆满成功.会议的主要议题是就满文的创制与改革、满文档案的贮藏与整理、满语及其文学的研究等方面问题进行讨论与交流.来自北京、辽宁、黑龙江等省份的满文研究机构和历史档案机构的领导及专家学者参加了会议.