游客抽样调查中"拒答"现象的原因分析及应对措施——以崆峒山游客抽样调查为例

本文对游客抽样调查中的拒答现象和拒绝率进行了阐述和分析,探讨了拒答现象产生的原因和应对措施。指出：游客抽样调查中的拒答现象是值得重视又容易忽视的,是旅游流、旅游心理、旅游目的地类型和其他社会因素综合作用的结果,而非单纯地由游客心理决定。所以要降低拒绝率,需要从消除游客心理障碍和提高游客主动参与性入手,促使游客主动配合调查,减少拒绝现象,提高调查的成功率和准确率。     

新疆扎滚鲁克、山普拉墓群出土(西周至东汉)毛织品的鉴定

为对一批出土的西周至东汉毛织品进行羊毛品种及编织方法进行研究,以鉴定羊毛品种和确定相关产地,应用扫描电镜分析羊毛毛纤维的组织结构、形态、纤维类型、细度,鉴定了羊毛品种。检验说明,扎滚鲁克和山普拉墓地出土毛织物主要是用新疆羊的羊毛织制的。     

山西省转型期旅游场强时空异质性特征及机制

以山西省转型期旅游发展为例,选取2005、2011和2017年17项指标构建城市旅游发展综合实力评价体系,基于改进场强模型,借助GIS技术和地理探测器模型,分析旅游场强时空异质性特征及演变机制。结果表明:(1)旅游场强高值区范围扩大、逐步形成叶脉状网络空间形态,突破了早期"人"形格局限制;(2)各地市旅游场强前期整体上升,后期集中在大西高铁沿线,城市绝对差异增加,高级别场强类型主要以太原市为中心向边缘扩散演替;(3)旅游场强空间格局演变具有时序性特征,主导因子经历了二元、三元主导和多元共同作用阶段,对于旅游产业后发省份构建区域旅游场强空间格局具有借鉴和指导意义。     

出土墓志与东魏北齐邺京行里制度探析

东魏北齐邺京里坊的设置沿袭北魏洛阳里坊制度,文献记载往往以里或乡里形式称谓居住地。然而有4方东魏北齐时期墓志,志文记载墓主的居宅异于常例,为某行某里,或某行某坊。通过对墓志时代及墓主身份等因素的综合研判,并结合史书记载,可知东魏初至北齐末,某行某里(坊)是邺京里坊称谓的一种常用格式。"行"的称谓源自邺京行经尉制度,行名与里(坊)名的连用,是基于城市治安管理角度所产生的隶属关系的呈现,在名称上反映了某行区域内里的管辖情况。且行名与里名存在一定关联,将行名与里名对照,可知邺京部分行名与里名相同。     

Geographically Weighted Extreme Learning Machine: A Method for Space–Time Prediction

Spatial heterogeneity has been regarded as an important issue in space–time prediction. Although some statistical methods of space–time predictions have been proposed to address spatial heterogeneity, the linear assumption makes it difficult for these methods to predict geographical processes accurately because geographical processes always involve complicated nonlinear characteristics. An extreme learning machine (ELM) has the advantage of approximating nonlinear relationships with a rapid learning speed and excellent generalization performance. However, determining how to incorporate spatial heterogeneity into an ELM to predict space–time data is an urgent problem. For this purpose, a new method called geographically weighted ELM (GWELM) is proposed to address spatial heterogeneity based on an ELM in this article. GWELM is essentially a locally varying ELM in which the parameters are regarded as functions of spatial locations, and geographically weighted least squares is applied to estimate the parameters in a local model. The proposed method is used to analyze two groups of different data sets, and the results demonstrate that the GWELM method is superior to the comparative method, which is also developed to address spatial heterogeneity.     

Amplification and sequencing of Trichuris trichiura ancient DNA extracted from archaeological sediments

Despite high prevalence of Trichuris trichiura infection, PCR-based analysis on T. trichiura from archaeological samples has not been established so far. In the present study, we sought to perform PCR-based amplification of T. trichiura aDNA using the sediments from medieval tomb of Korea. The presence of Trichuris eggs were first detected by microscopic observation; then confirmed by PCR-based aDNA analysis. Obtained sequence showed 100% homology to that of the small subunit ribosomal RNA (SSUrRNA) gene of T. trichiura but distinct from that of other Trichuris species. PCR-based aDNA analysis in this study can serve as effective method to confirm the presence of T. trichiura eggs in the soils or coprolites collected from archaeological sites.     

洛宁县发现黄土石器工业

<正>2006年12月,根据吕遵谔提供的线索,北京师范大学历史学院与洛阳市文物钻探办公室的考古人员,在洛阳市进行了为期一个多月的旧石     

清末的私塾改良及其成效

清末,新式学堂虽然有了较快的发展,但仍难以承担起初等教育的重任,由此教育领域里出现了先由民间倡导后由官方推行的一场私塾改良运动.这场运动大致分为调查劝导、召开观摩会设立研究所、甄别改造塾师、认定四个步骤.由于缺乏强有力的中央政府的领导,来自塾师的抵抗以及私塾根深蒂固的社会地位等因素的制约,这场改良运动显得雷声大、雨点小而收效甚微.这表明,传统教育向现代教育的特型必然要经历一个艰难曲折的过程.     

江苏日伪县知事县长群体分析

沦陷时期江苏苏中、苏南地区的伪县知事、县长在清乡(1942年)前后有较大的变化。清乡前大多由地方上的耆老、商会会长等头面人物担任,清乡后则主要是由日伪政权机关任命的较为年轻者组成,且相当一部分人出身行伍。清乡前日伪中央政权及省政府并不能有效控制县级政权,之后其控制范围也仅囿于苏南各县;而日本占领者对县级政权的人员任免和控制程度正好与伪中央政权相反。     

上下椽头尾搭接的木构古建筑受力性能的简化计算方法研究

古建筑木结构主要分为抬梁木构体系和穿斗木构体系,其结构布置与连接节点明显不同于现代木结构。为了进一步提高古建筑木结构的结构计算和结构安全评估的工程实用性,对常见木椽的受力性能简化算法、常见拼合檩条的受力性能简化算法、三架梁和五架梁受力性能的简化算法进行研究,并基于动力特性分析,初步提出古建筑木结构典型构架体系在进深方向和面阔方向结构基本自振周期的近似计算模型。研究成果可为古建筑木结构的结构性能计算、结构安全评估以及加固修缮设计提供依据和参考。