明代方志出版中的财务问题

明代地方志出版中的财务问题可以根据五百多种明代府、州、县方志来考察。地方志比 其他书籍更有可能包含生产成本的信息,因为监督地方志编纂的官员们需要核算费用。编纂出版一部 地方志需要购买原材料和生产设备,需要支付编纂人员和工匠的工资、工人的伙食费、给协助编纂或撰 写序言者馈赠的礼品费用,以及诸如运输和储存费用等杂项支出。对这些条目繁多的花费情况的考察,不论是对中国地方志的研究,还是对普遍意义上的书史研究,都是很有意义的。     

Generalizing the information content for stepped wedge designs: A marginal modeling approach

Stepped wedge trials are increasingly adopted because practical constraints necessitate staggered roll-out. While a complete design requires clusters to collect data in all periods, resource and patient-centered considerations may call for an incomplete stepped wedge design to minimize data collection burden. To study incomplete designs, we expand the metric of information content to discrete outcomes. We operate under a marginal model with general link and variance functions, and derive information content expressions when data elements (cells, sequences, periods) are omitted. We show that the centrosymmetric patterns of information content can hold for discrete outcomes with the variance-stabilizing link function. We perform numerical studies under the canonical link function, and find that while the patterns of information content for cells are approximately centrosymmetric for all examined underlying secular trends, the patterns of information content for sequences or periods are more sensitive to the secular trend, and may be far from centrosymmetric.     

Some Classes of Binary Block Neighbor Designs

Neighbor designs are useful to neutralize the neighbor effects. In this paper two classes of these designs are constructed in circular binary blocks of size 4, 8, …, 24. First class consists of six infinite series of nearest neighbor designs in which each pair of distinct treatments appears once as neighbors. Second class also deals with six infinite series of these designs in which each pair of distinct treatments appears twice as neighbors. A catalog of nearest neighbor designs is also compiled in circular binary blocks for odd number of treatments from 23 to 99.     

一种视频帧宏块噪声判断的自适应边缘检测技术

在视频错误隐藏及恢复处理中，对受损对象的边缘提取和重构是一个十分重要的内容．各种边缘检测技术根据不同的场景具有各自的优点和缺陷．本文对两种经典的检测算子进行分析和仿真，进行性能比较，然后提出一种能根据视频帧宏块噪声自适应的边缘检测技术，通过仿真结果证明其性能要优于两种经典的边缘检测技术．     

Balanced treatment incomplete block designs through integer programming

An algorithm is presented to construct balanced treatment incomplete block (BTIB) designs using a linear integer programming approach. Construction of BTIB designs using the proposed approach is illustrated with an example. A list of efficient BTIB designs for 2 ? v ? 12, v + 1 ? b ? 50, 2 ? k ? min(10, v), r ? 10, r₀ ? 20 is provided. The proposed algorithm is implemented as part of an R package.     

基于语料库将“预制语块”应用于英语口语教学

现代语料库语言学对英语教学产生了深远的影响,讨论了语料库对于英语口语教学的理论基础,提出通过将语料库中＂预制语块＂的分析引入英语口语课堂,对学生理解词汇的意义,搭配,及运用环境,最终对其口语能力产生积极影响。此外,基于语料库的教学模式还可以提高学生对于英语学习的兴趣,使课堂更为生动活泼。     

徽州刻书与徽派版画艺术探议

徽州刻书约起于唐末至五代时期,盛于明中叶,明万历至清顺治年间为徽州刻书最为辉煌时期,至清中期渐渐衰微。徽派版画是源于徽州刻书中的插图艺术和墨谱,它由刻书和制墨的兴起、鼎盛、创新,逐渐形成独立的版画体系。徽派版画在我国版画艺术中,是一株引人注目的奇葩,无论其镌刻之精、遗存数量之多、艺术价值之高,皆精于其它派别版画。     

手机外壳注塑模具设计

手机外壳外表面要求高,扣位多而尺寸小,结构复杂,是手机模具研制中的关键。运用UG、AutoCAD软件设计一 个翻盖手机外壳注塑模具,根据塑件结构,阐述了浇注系统、侧抽芯机构以及顶针与模仁等模具设计要点。侧抽芯机构 为该模具设计难点,共设有5个滑决机构和7个单边导滑的斜顶机构。其中,2个滑块机构由斜导柱驱动的定模滑块成 型2个内侧转轴孔,这2个滑决共用1个楔紧块。采用一模一腔,三板模结构,共设3个浇口以迅速均匀填充。采用镶 决式的组合式型芯模仁以便于加工利于排气。该模具设计思路新颖,在保证塑件成型质量和效率的前提下,简化了模具 结构,降低加工和维修难度。     

球型支座转动机构研究及设计

针对球型支座在转动时,侧面滑动副由面接触变为线接触,易带来摩擦副表面破坏的问题,为横向活动支座增加了转动机构,该转动机构主要是在上、下支座板之间设置转动块,转动块一侧固定滑动材料与上支座板对摩,实现支座的横向位移,另一侧与下支座板的圆弧凸缘接触,实现支座的转角要求。该转动机构不仅避免了支座有转角时摩擦副的破坏,同时也满足支座的位移和转角要求。通过对支座运动及受力状态的分析,找出了转动机构的受力最不利状态,并对此状态下的上支座板挡块、滑板及接触凸缘进行了应力计算,计算结果均满足设计要求。     

论我国航运反垄断规则之立法走向--以欧盟海运竞争法律体系改革为借鉴

2006年10月欧共体理事会通过第1419/2006号条例,废除班轮公会反垄断集体豁免,将《欧共体条约》一般性竞争法规则适用于海运市场,引发了欧盟海运竞争法体系的根本变革.欧盟海运竞争法律体系的变革引发了国际社会对于海运竞争立法的重新评估,中国应当通过评估欧盟限制航运反垄断豁免,将航运市场纳入一般竞争法的这一做法,立足于国家航运与贸易利益的角度来确立自己的航运反垄断规则.在定位起草中的《航运法》反垄断规则的立法走向时,欧盟将一般竞争法规则适用于海运市场的做法值得引为借鉴.