论雪山一期文化

雪山一期文化是中国北方地区新石器时代的一支代表性文化。本文对其文化内涵、分期年代、分布范围、 地方类型、来龙去脉、对外关系等问题进行了探讨。     

《西京杂记》中的汉代科技史料

《西京杂记》是一部杂史类著作,对于汉代的科学技术有许多记述,有些材料曾被科技史研究者引用。本文将《西京杂记》中科技史的全部内容按照科技史的观点进行了分类,并进一步对有关机械、物理的部分内容进行了分析、探讨。     

餐饮产品标准化生产与定制化生产是宾馆餐饮的取胜之道

本对三种宾馆用餐消费的消费特点进行分析,提出采用两种方式——标准化生产和定制化生产来满足这三种消费需求。     

近代山陕地区地理环境与水权保障系统

山陕地区地处干旱、半干旱地理环境,由于水资源短缺,水权直系民生。本文围绕水权这一主题,探讨了山陕地区水权保障系统的运作方式、渠系间权益特点与维护原则,并指出依托灌渠这种水资源获取形式,水资源分配一般形成灌渠、利户两个受益层面,对应这两个受益层面,水权保障系统形成以渠系、村落为基点的地缘水权圈以及以家族为中心的血缘水权圈,两个圈层相互交织,杂融社会习俗、社会惯性为一体,在乡村社会中占有重要地位。     

贵州民国档案中所见“疑似石漠化”与今日石漠化分布状况的比较研究

通过对贵州省民国时期档案与相关资料的分析,依据各县"不能生产之石山"占该县总面积的百分比,把相关39县划分为四个程度不同的"疑似石漠化"地区:重度石漠化地区(≥50%)、中度石漠化地区(<50%≥20%)、轻度石漠化地区(<20%≥5%)和无明显石漠化地区(<5%)。民国时期,毕节地区东部、安顺市、黔西南地区、铜仁及其周边地区的石漠化现象最为严重,除了铜仁及其周边地区,其他地区的石漠化状况与今日的吻合。民国时期石漠化严重程度与人口密度分布呈正相关,反映人类活动是石漠化扩张的主要原因。民国时期石漠化严重地区与碳酸盐岩的分布高度吻合,反映了石漠化的自然成因。     

Face-Work: Making Hair Matter in Sixteenth-Century Central Europe

Bringing gender history, the history of the body and art history into a conversation with material culture studies, this article argues that the sudden fashionability of beards in Renaissance Europe has been intricately linked with a culture of material and visual experimentation. I propose shifting perspectives from a focus on the symbolism of beards towards examining how early modern ways of material engagement with the matter of hair crafted a visual attention to facial hair that made up the sociocultural significance of beards. Focusing on how people made hair matter, I suggest working with the concept of face-work. In particular, this article maps how the Reformation upheavals and the rise of new visual practices dynamised Renaissance protagonists’ creative engagement with facial hair as a means for staging the self.     

我国文博文创工作"十三五"总结及"十四五"建议——基于全国71家文博单位的调研

"十三五"时期是我国文博文创工作快速发展、质效高速提升的重要历史阶段.对全国71家文博单位相关工作的调研显示,这一时期,文博文创在发展规模、馆企联动、品牌转型升级、"互联网+"、政策完善等方面均取得了显著成绩.但同时也存在一些不足,如红色文博文创发展力度有待加强、整体发展水平在产品类型和地域上双重不均、授权机制混乱造成文化溢价失范,这既有文博文创工作自身局限,也有客观外在原因."十四五"期间,可通过国家财政政策支持和授权机制创新两条路径,促进文博文创工作稳定有序向前发展.     

Hysteretic Model for Flexure-shear Critical Reinforced Concrete Columns

A model for predicting the cyclic lateral load-deformation response of flexure-shear critical reinforced concrete (RC) columns subjected to combined axial load and cyclic shear is proposed. Strength deterioration in the primary curve due to the effect of shear after yielding is considered by a modification coefficient. Rules for unloading and reloading branches of the hysteretic curve are obtained from regression analysis of test results. Unloading stiffness is fitted as a function of displacement ductility and secant stiffness of the point with maximum displacement in the primary curve. Pinching is simulated by changing the slope of reloading branch. Path-based cyclic strength deterioration is incorporated in the proposed model. In the expression of cyclic strength deterioration, the effects of aspect ratio and axial-load ratio are considered. Comparison between the predicted cyclic response and experimental results indicates that the proposed model can predict the observed hysteretic response of flexure-shear critical RC columns well.