检索结果-南通市图书馆

technology diffusion and population migration reflected in blade technologies in northern China in the Late Pleistocene

引用

Science China Earth Sciences 2016年第8期59卷 1540-1553页

作者： LI Feng CHEN FuYou WANG YingHua GAO Xing Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing 100044 China Inner Mongolia Museum Hohhot 010010 China

In recent years, the origin and evolution of modern human behaviors have become a common topic of research in Paleolithic archaeology. One important part of modern human behavior, blade technology, was once thought to be unique to modern humans. Recent studies have suggested that variations in blade technology do not fully correspond to modern populations. However, the standardization, diversity, discontinuity in terms of time distribution, and differences in spatial distribution of blade technology give it an important role in discussions of modes of adaptation, diffusion of technology, and population migration of hominins. By categorizing the major blade assemblages in China, we show that there were two blade reduction methods in northern China: the Levallois method and the prismatic method. Dating back 40000–30000 years, the Levallois and prismatic blade method combined to form the characteristics of the early stage of the Upper Paleolithic. Artifacts bearing such characteristics are located in Northwest China, Northeast China, and the Qinghai-Tibet Plateau. The unearthed blades are similar in technological organization and are connected geographically with those discovered in Siberia and Mongolia, which also indicates a distinct border from those discovered in northern China. This fact is suggestive of population immigration. About 29000–25000 years ago, a combination of prismatic blades and microblades was developed in the hinterland of China; however whether it can be regarded as the representative of population migration or only a technological adaption remains undetermined. We suggest that the system of production of different blades should be distinguished in the study of blade assemblages and that different blade methods should not be integrated into a single technical system to discuss technology diffusion and population dispersal.

关键词： North China Late Pleistocene Blade technology technology diffusion Human migration

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Initial Value Sensitivity in technology diffusion

引用

Journal of Systems Science and Information 2009年第1期7卷 11-22页

作者： Xiaojun Zhang Zheng He School of Applied Mathematics University of Electronic Science and Technology of China Chengdu 610054 China School of Management and Economics University of Electwnic Science and Technology of China Chengdu 610054 China

Initial value sensitivity in technology diffusion, an important problem for firms＇ decision making such as the timing and target market chosen for new technology or product entering the market, has long been limited by the research methodology and tool. Based on the network extension of Bass model, this paper proposes a stochastic threshold model and uses computer simulation to empirically examine three propositions on initial value sensitivity in technology diffusion process. Our findings suggest that diffusion extent is sensitive to not only the number of initial adopters but also their positions in social network, and the variance of customers＇ initial assessment as well, which can be detailed as follows：（1） the degree of technology diffusion exhibits highly positive relation to initial adopter quantity, in particular, when the quantity of initial adopters is small, diffusion extent is very sensitive; （2） diffusion extent is sensitive to the positions of initial adopters; （3） in addition, the variance of customers＇ initial evaluation displays strong negative relation to the final diffusion degree in that the larger variance, the lower of diffusion extent.

关键词： initial value sensitivity technology diffusion social network computer simulation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Study on the Mathematical Model of technology diffusion in Technical Economic System

引用

数学计算（中英文版） 2023年第1期11卷 1-6页

作者： Jun Li Li Zhang Shizhen College of Guizhou University of Traditional Chinese Medicine GuiyangGuizhou550200China

In the technical and economic system,there is a certain interaction between various technologies,mainly in the form of technology *** constructing the mathematical model of technology diffusion,the trend of technology diffusion can be predicted,the reasonable distribution of science and technology productivity can be realized,and the policy optimization measures can be formulated on the basis of evaluating the existing *** paper first points out the basic idea of digital model of technology diffusion,and then focuses on the analysis of various parameters of mathematical model of technology diffusion,and puts forward the application conclusion of mathematical model of technology diffusion,in order to provide reference for relevant industry personnel.

关键词： technology and Economic System technology diffusion Digital Model

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Main Factors Affecting the Adoption and diffusion of Web Service technology Standards

Main Factors Affecting the Adoption and Diffusion of Web Ser...

引用

2010 Second International Conference on E-Learning, E-Business, Enterprise Information Systems, and E-Government (EEEE 2010)

作者： Caimei Hu College of Economic and Management Heilongjiang Institute of Science and technology Harbin, Heilongjiang Province, China

After the PC and the Internet technology, Web Service technology is touted as the third IT technology revolution. Although the application range of Web Service is expanding in the areas of e-business and e-government. But the adoption of Web Service standard is still very slow. This paper introduces the Web Service technology standard system, based on the innovation diffusion analysis framework of technology-Organization-Environment (TOE) analyses the main factors affecting the adoption and diffusion of Web Service technology standards.

关键词： Web Service TOE Analyses technology Standard technology Adoption technology diffusion

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Drivers and barriers to energy-efficient technologies(EETs)in EU residential buildings

引用

能源与人工环境(英文) 2021年第3期2卷 290-301页

作者： Clara Camarasa Lokesh Kumar Kalahasthi Leonardo Rosado Sustainable Building Group Chalmers University of TechnologyGothenburgSweden

To achieve carbon targets,the European Union(EU)aims to promote nearly zero-energy buildings(nZEB).To enable the necessary transition,technical solutions need to converge with socio-economic factors,such values and awareness of stakeholders involved in the decision-making *** this light,the aim of this paper is to characterise perceived drivers and barriers to nine energy-efficient technologies(EET),according to key decision-makers’and persuaders of the technology selection in the EU residential building *** are collected across eight EU countries,***(BE),Germany(DE),Spain(ES),France(FR),Italy(IT),Netherlands(NL),Poland(PL),and United Kingdom(UK).The stakeholders’selected are architects,construction companies,engineers,installers and demand-side *** from a multi-country survey is analysed to calculate the share of 15 drivers and 21 barriers(aggregated to 5 groups),being selected for each EET and *** 5 groups considered to analyse drivers and barriers are environmental,technical,economic,social,*** perceived barriers and drivers were further studied for their association across the countries using the Pearson’s Chi2 and a Cramer’s V *** results demonstrate that across all EETs and countries,the technical and economic driver groups are perceived to have the highest potential to increase the implementation rate of *** terms of barriers,economic aspects are seen as the foremost reason that EET are not scaling *** both drivers and barriers legal aspects are the least often *** overall the barrier groups show significant variation across countries compared to driver *** findings provide an evidence-basis to better understand arguments in favour and against specific EETs and,in this way,support policy makers and other interested parties to increase the market share of the selected solutions.

关键词： Energy efficiency technology diffusion technology selection Residential building stock Drivers Barriers

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Optimal advertising duration for profit maximization

引用

Journal of Management Analytics 2020年第3期7卷 458-480页

作者： Adarsh Anand Shakshi Singhal Ompal Singh Department of Operational Research University of DelhiDelhiIndia

The current research elucidates the advertising scheme of automotive innovation by incorporating the various stages of the product life *** study proposes an empirical model for the automotive industry to evaluate a time-point known as a switch-point or a take-off point at which firms should modify the advertising and sales promotion strategies to boost sales *** problem applies a time-series innovation diffusion model wherein adoption rate changes when a product enters a growth stage and then again when the company stops the advertising campaign in the maturity *** present paper develops a profit maximization problem,which optimizes the overall advertising duration and advertising take-off point.A numerical illustration is provided using the actual sales data of automobile industries,and sensitivity analysis is further performed to validate the effect of critical parameters on the optimization problem.

关键词： automotive industry advertising take-off point optimal advertising decisions profit maximization product life cycle stages switch-point technology diffusion

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

利用加工贸易技术扩散优化出口商品结构研究

引用

外贸经济、国际贸易 2006年第11期 49-56页

作者：赵晓晨

加工贸易对我国经济发展的促进作用不仅表现在扩大贸易规模和促进经济增长上，更重要的是体现在促进我国技术进步和出口商品结构升级上，而这一作用主要是通过加工贸易的技术扩散效应获得的。加工贸易通过吸引外商直接投资、商品进出口... 详细信息

加工贸易对我国经济发展的促进作用不仅表现在扩大贸易规模和促进经济增长上，更重要的是体现在促进我国技术进步和出口商品结构升级上，而这一作用主要是通过加工贸易的技术扩散效应获得的。加工贸易通过吸引外商直接投资、商品进出口、产业关联效应和人力资本流动等几个途径，扩散和传播了国外先进技术，优化了出口商品结构，并推动我国在技术进步的阶梯上不断攀升。

关键词：加工贸易技术扩散结构升级政策调整 processing trade technology diffusion structure escalator policy adjustment

来源：人大复印报刊资料评论

在线全文

人大复印报刊资料

学校读者我要写书评

暂无评论

技术扩散视角下信息技术与学校教育融合的若干思考

引用

教育学 2015年第7期 1-6,19页

作者：杨浩郑旭东朱莎

信息技术与教育的融合是大势所趋，但在理论与实践的层面上还面临着一些困惑与挑战，比如“非显著性差异现象”与“乔布斯之问”，均在一定程度上揭示了信息技术与教育融合的历史命运。从“创新扩散模型”“技术接受模型”“技术成熟度... 详细信息

信息技术与教育的融合是大势所趋，但在理论与实践的层面上还面临着一些困惑与挑战，比如“非显著性差异现象”与“乔布斯之问”，均在一定程度上揭示了信息技术与教育融合的历史命运。从“创新扩散模型”“技术接受模型”“技术成熟度曲线”等技术扩散的理论视角出发来审视与反思当前信息技术在教育领域内的扩散，有助于我们把握信息技术与教育融合的普遍规律，破解技术与教育融合的历史与现实难题。而揭示信息技术与教育融合的适效性与滞后性等特殊性，则可以有效回应“非显著性差异现象”，回答“乔布斯之问”。以此为基础，本文对包括大型开放网络课程、翻转课堂、电子书包在内的教育技术创新进行了深度解析，期望能够更进一步地认识信息技术与教育、尤其是正规学校教育融合的长期性与复杂性。

关键词：信息技术与教育融合技术扩散适效性滞后性大型开放网络课程 infusion of ICT and education technology diffusion adaptive efficiency lag effect MOOC

来源：人大复印报刊资料评论

在线全文

人大复印报刊资料

学校读者我要写书评

暂无评论

Literature review on renewable energy development and China’s roadmap

引用

Frontiers of Engineering Management 2021年第2期8卷 212-222页

作者： Dequn ZHOU Hao DING Qunwei WANG Bin SU College of Economics and Management Nanjing University of Aeronautics and AstronauticsNanjing 211106China Research Center for Soft Energy Science Nanjing University of Aeronautics and AstronauticsNanjing 211106China Energy Studies Institute National University of SingaporeSingapore 119077Singapore

The low carbon energy transition has attracted worldwide attention to mitigate climate *** energy(RE)is the key to this transition,with significant developments to date,especially in *** study systematically reviews the literature on RE development to identify a general context from many *** goal is to clarify key questions related to RE development from the current academic *** first identify the forces driving RE ***,we analyze methods for modeling RE developments considering the systematic and multiple complexity characteristics of *** study concludes with insights into the target selection and RE development roadmap in China.

关键词： renewable energy energy transition technology innovation technology diffusion development preference energy system modeling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Application of Ecological Elements of Digital technology in Construction Industry

引用

Open Journal of Civil Engineering 2021年第1期11卷 14-27页

作者： Jie Sun College of Civil Engineering and Architecture Zhejiang University Hangzhou China

The application of digital technology in the field of construction is still in its infancy, and the existing concrete framework of digital technology application in the construction industry and the study of applied ecological elements are not enough. The ecological elements of digital technology application in the construction industry are important factors that promote the healthy operation of the entire digital technology application ecosystem. Using grounded theory, we compiled the data of 33 researchers who participated in semi-structured interviews, and obtained 4 main categories and 9 sub-categories of ecological elements of digital technology application in the construction industry. Among them, the digital technology application mechanism is the core category of ecological application elements. We also used the Bass model to analyze the application trend of digital technology in the construction industry. In 2040, the number of construction companies applying digital technology will reach 98.66% of the maximum market potential.

关键词： Digital technology in Construction Industry Ecological Elements technology diffusion Grounded Theory Bass Model

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：