共查询到20条相似文献,搜索用时 171 毫秒
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中国的滨海地区,幅员十分辽阔.在1万8千公里的海岸线上,就有辽宁、河北、天津、山东、江苏、上海、浙江、福建、广东、广西、海南、台湾等12个省市和香港、澳门二个特别行政区,省辖市以上的大中城市有丹东、大连、营口、秦皇岛,天津、烟台、威海、青岛、南京、常州、无锡、苏州、镇江、连云港、南通、扬州、上海、杭州、宁波、温州、淑江、福州、莆田、泉州、厦门、漳州、汕头、广州、茂名、湛江、深圳、珠海、北海、海口、通什、以及香港、澳门、台北,基隆、台中、台南、高雄等40多座城市,如果把以上省市全部辖区内的市都放进去.数量则超过100个,这些城市大多有2个以上规模比较可观.基础比较好的博物馆,这是中国博物馆事业发展的主要阵地和重要因素. 相似文献
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2006年6月,经过近20年的编修,98万字的《和田市志》终于出版了。这是和田建市以来第一部大型志书,它内容充实,体例完备,汇聚了众多编纂人员的心血。志书以编、章、节、目为基本框架,由概述、大事记、专业志、附录等部分组成,共设24编、107章、404节,记述了和田市境内的建置、区划、自然环境、人口、民族、宗教、城乡建设、环境保护、农业、工业、商业、粮食、交通、邮电、财政、税务、金融、保险、旅游、综合经济管理、政党群团、政权、政协、民政、劳动人事、政法、军事、科技、教育、文化、体育、卫生、人物等方面的内容,是和田市地方的全… 相似文献
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在中国共产党第十五次全国代表大会即将召开的前夕,全国省会(首府)城市民委主任第七次联席会于1997年8月25日至8月29日在辽宁首府沈阳举行。出席这次会议的有乌鲁木齐、银川、南宁、昆明、贵阳、长沙、南京、太原、兰州、郑州、合肥、杭州、济南、西宁、石家庄、哈尔滨、沈阳等17个城市的民委负责同志,上海、重庆两个直辖市的民委负责同志也光临了会议。辽宁省的鞍山市、本溪市民委负责同志被特邀出席了会议。参加这次会议的有汉、满、蒙古、回、朝鲜、壮、苗、彝、仫佬、土家、藏、维吾尔、瑶、布依族等来自21个城市的14个民族的民族干… 相似文献
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Biometry is useful for a suite of analyses relevant to zooarchaeology, which include analysis of mortality profiles, taphonomy, paleoecology, among other purposes. Here, size-age prediction models are developed for 10 freshwater mussel species found in north Texas to develop a method for studying paleoenvironmental conditions. Shell length is often used to evaluate the structures of modern mussel populations, but its use on paleozoological specimens is not feasible because complete shells rarely preserve. Instead, pallial line-to-lateral teeth length (PLL) and pseudocardinal teeth-to-pallial line length (PSP) are evaluated as proxy measures for shell length. Linear regression models based on PLL and PSP using modern mussels demonstrate that they are accurate proxies of shell length for multiple species from a variety of habitats. In addition, ontogenetic-age structures for a modern sample and for two late Holocene assemblages from north Texas are developed using PLL and PSP. These techniques are useful tools for evaluating past ecological conditions of freshwater mussel populations when large samples are available for study, which expands analytical potential of zooarchaeological studies of prehistoric unionid remains. 相似文献
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学校德育情境的创设对提高德育实效性具有重要的意义,我们应对其进行深入地研究,着力创设理想的适宜学生发展的德育情境。德育情境的创设应以科学性和适宜性为前提,以创设宽松和谐的人际情境为基础,以学生主体性的发挥为关键,以教师德育能力的提升为保障。 相似文献
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Public opinion features prominently in policy research because it sets bounds on the definition of policy problems and acceptable policy solutions. We contend that public opinion is also important for setting bounds on the level of government at which policy hazards are regulated by shaping preferences for uniformity of regulation and, relatedly, preferences for centralization. We offer a theoretical argument for why risk creates pressures for uniform standards and examine the extent to which preferences for uniformity and centralization are the product of fairly stable individual-level predispositions (e.g. partisanship and ideology) versus more fluid attitudes like perceptions of risk, which vary in response to crises, new information, and issue framing. We test our argument using survey data in the policy domain of food safety and find that individuals who anticipate greater risk from food-borne illness prefer more uniform food safety regulation, which translates into preferences for federal-level policymaking. Our results imply that contextual circumstances and strategic communications that influence risk perceptions can create not only generalized public demand for more regulatory policy but specific demand for uniform, centralized regulation. 相似文献
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Fifteen OECD countries, ten of which EU members, have regulation for fixing the price of printed books. At least eight of these have extended such regulation to e-books. This article investigates the cultural and economic arguments as well as the legal context concerning a fixed price for e-books and deals with the question of how the arguments for and against retail price maintenance for e-books should be weighted in the light of the evidence. It concludes that while the evidence in defence of a fixed price for printed books is slim at best, the case for a fixed price for e-books is weaker still while the legal acceptability within EU law is disputable. Against this background, introducing a fixed price for e-books is ill-advised. 相似文献
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Giles F. Carter 《Journal of archaeological science》1978,5(3):293-300
Sixty-one Augustan quadrantes were analysed for calcium, iron, nickel, copper, silver, tin, antimony, and lead by X-ray fluorescence. Most coins contained about 99·7% copper with the other seven elements present as trace impurities. Significant differences in composition were found for the three different issues of quadrantes minted in c. 9 BC indicating that these issues were not minted exactly contemporaneously. Quadrantes minted in c. 4 BC have trace element concentrations in ranges that differ from those of the 9 BC quadrantes. The precision is very good for all trace elements (the precision of calcium was not calculated): average standard deviations are 0·0021% for Fe, 0·0026% for Ni, 0·0038% for Ag, 0·0014% for Sn, 0·0031% for Sb, and 0·015 for Pb. 相似文献
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北京中低收入社区育儿人群的服务设施需求研究 总被引:1,自引:0,他引:1
服务设施需求分析是建设社区生活圈和完整社区的基础。已有研究关注服务设施供给的空间配置或评价,对服务设施需求的研究并不多见,尤其缺少对育儿人群等细分人群的研究。本文以此为切入点,讨论在二孩政策和年轻人少子化观念影响下,社区应当给予育儿人群什么样的服务设施支持。基于2017年北京公平与包容调查问卷数据,本文采用有序多分类模型分析中低收入社区居民对教育、医疗等10类设施的需求偏好。结果显示育儿人群对各类设施的需求和访问频率都超出其他人群,且相关需求存在性别差异;二孩家庭对服务设施的依赖性强于独生子女家庭,且因子女处于不同年龄段的家庭需求也有所差异。最后,本文提出了育儿人群所需服务设施的分类体系,以期为精细化社区服务设施规划提供参考。 相似文献
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Three fish bone identification protocols used for determining taxa composition for Pacific island archaeofaunal assemblages are evaluated. The protocols include using the following: (1) the most commonly identified five paired cranial bones and ‘specials’ or unique elements; (2) an expanded number of cranial bones; and (3) the less common inclusion of all vertebrae. Explicit identification and quantification protocols are outlined for systematically incorporating all vertebrae which, predictably, increases the number of identified specimens for an assemblage, thus providing more bones useful for reconstructing live fish biomass (weight and length). Significantly, a range of unique archaeological vertebrae are useful for calculating minimum number of individuals. Using a well‐preserved assemblage from Henderson Island, Pitcairn Group, southeast Polynesia, numbering 6480 fish bones (concentration index = 21 580 m3), we demonstrate differences in rank‐order abundance from three taxon identification protocols. For example, when using all vertebrae grouper (Serranidae) and surgeonfishes (Acanthuridae) are more numerically equivalent than when relying mostly on cranial bones for identification for minimum number of individuals and number of identified specimens. This has important implications for making comparisons between sites or across regions where different identification protocols were used. This pilot study demonstrates that using all vertebrae for taxon identification and quantification, not just unique hypurals (terminal vertebrae) or those from sharks and rays (Elasmobranchii), should be standard practice for identifying a greater number of bones to taxon and thereby providing better reconstructions of prehistoric fishing and subsistence practices in the Pacific. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
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The wellsprings of candidate emergence: Geographic origins of statewide candidacies in the United States 总被引:1,自引:0,他引:1
Candidates and nominees for statewide office in the United States do not emerge from random locations within states. In this paper, we argue that densely populated areas are more likely to both foster political ambition and to afford the resources that enable candidates to wage an effective campaign. Candidates and nominees for major statewide office originate from populous counties in numbers significantly out of proportion to these counties’ share of their state’s population. Meanwhile, aspirants virtually never emerge out of rural areas or small towns. The pattern holds for all candidates and nominees for both Senate and governor and for both major political parties. Regional biases are more pronounced for institutionally strong gubernatorial offices than for weak offices and among high quality nominees for statewide office than among inexperienced candidates. Given the importance of urban/rural cleavages in the American electorate, these findings raise fundamental questions about political representation. 相似文献
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Effective planning to support and enhance ecological values in sites of conservation interest requires accurate, comprehensive and detailed ecologically based maps and data, not only for the conservation site but for the wider landscape in which such sites are situated. In this paper we present an efficient and low cost method for combining appropriate technologies and available data to produce such maps at a landscape level. This method is described and evaluated using a case study of a land use and habitat map, with an associated geographic information system (GIS). The map was created for the district of Dunedin, New Zealand, an area of approximately 3340 km2. This paper demonstrates how the map can be adapted for use by small, locally based conservation organisations that typically do not have the resources to obtain detailed, consistent and comprehensive spatial data for the areas they manage. The example of Orokonui Ecosanctuary is used to illustrate the potential applications of the map including mapping assets and habitats within a site and for exploring the relationship between the Ecosanctuary's internal and external habitats. External habitats can form a vital habitat network for many of the endangered species being reintroduced into the Ecosanctuary as well as a source of threats through potential reinvasion by pests and land use change. Though the mapping method presented in this paper is not necessarily new, it demonstrates the potential for utilising advances in mapping techniques and available data sets to offer a pragmatic support mechanism of practical value for small conservation organisations. 相似文献