Results 21 to 30 of about 13,682 (165)

A Study on Two-tiered NK Model of Business Model and Computational Experiments [PDF]

open access: yes, 2010
作为应对企业内外部环境变化加剧、获取企业间竞争优势的手段,商务模式创新给企业带来了前所未有的机遇和挑战,成为现代企业关注的焦点。本文在介观商务模式的概念框架和基于复杂系统理论的商务模式创新研究的理论基础上,引入层次化商务模式创新,将不同商务模式的固有特点通过两层之间的传递涌现出来,并进一步把商务模式看成是一个动态的演化过程,从动态的角度分析层次化商务模式的演化特性,进而总结出层次化商务模式的创新规律和策略。 论文根据复杂性科学的理论和方法,把商务模式视为复杂系统,应用NK模型方法 ...
林泽锋
core  

Fermi Surface Structure Revealed by Quantum Oscillations in Half‐Heusler Semimetal LuAuSn

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The Fermi surface structure in the half‐Heusler semimetallic compound LuAuSn was systematically investigated using quantum oscillation studies of high‐quality single crystals and first‐principles calculations. Clear bulk quantum oscillation signals were observed for multiple complementary physical properties, including magnetization, Hall ...
Yue Lu   +12 more
wiley   +1 more source

A survey of depth learning methods for detecting lung nodules by CT images(应用于平扫CT图像肺结节检测的深度学习方法综述)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2017
肺癌是一种致死率很高的癌症.通过肺部平扫CT影像检测肺结节对肺癌早期诊断、治疗意义重大.全面介绍了 一种革命性的图像识别技术——深度学习方法,在肺结节检测中的应用.首先,横向对比了不同卷积神经网络的结构及其在图像识别上的效果,其次着重分析了不同深度学习方法在训练肺结节分类器上的应用,包括faster-RCNN、迁移学习、残差学习以及迁移学习.还介绍了一些可用的肺部CT影像数据集供读者参考.
HUWeijian(胡伟俭)   +5 more
doaj   +1 more source

The Research Path of Social Commerce Application in Business Model Innovation [PDF]

open access: yes, 2015
社会化商务应用进入了快速发展阶段,对组织、个人的行为构成了重要的影响。商务模式创新是企业竞争力的重要源泉,也是企业应对经济增长放缓、经济结构调整的新常态一个重要措施。商务模式创新活动应更多地将社会化商务应用纳入其中。本文对商务模式创新中社会化商务应用的研究路径进行了探讨。提出,广义虚拟经济理论使用价值、虚拟价值的理论视角对商务模式创新中社会化商务应用研究具有重要的理论指引作用。商务模式创新、社会化商务应用研究涉及个体智能、行为、系统结构等多方面的复杂性因素。运用复杂性科学的研究方法 ...
徐迪, 殷实
core  

Systematic Study of Fermi‐Level Pinning at Crystalline Metal/GaN Interfaces: First‐Principles Calculations and Diode Characterization

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The Schottky barrier height (SBH), which serves as a pivotal determinant of charge carrier injection efficiency in electronic devices, critically governs electrical behavior at metal/semiconductor interfaces. However, pronounced metal‐induced gap states at metal contact interfaces induce Fermi‐level pinning, which constrains the ...
Xiaofei Liu   +10 more
wiley   +1 more source

联邦可视化:一种隐私保护的可视化新模型

open access: yes智能科学与技术学报, 2019
概述了联邦可视化的概念、框架、方法与应用。联邦可视化框架能够在不进行数据整合的情况下,针对具体任务和特定场景进行加密训练,得出反映全体数据特征的可视化模型。联邦可视化是联邦学习框架在可视化领域的拓展应用,主要强调在保障数据隐私的前提下,互利共赢的联邦协作方式在对多数据源数据进行可视分析方面的应用,以打破各领域、各行业的数据壁垒,实现数据与知识的共享。
魏雅婷, 王智勇, 周舒悦, 陈为
doaj  

A Study on the Diffusion of Innovation Based on the Scale-Free Network [PDF]

open access: yes, 2011
一种创新产品、技术等新鲜事物在复杂社会经济系统中的扩散过程成为学术界的研究热点。创新扩散过程是通过个体采纳创新实现的。而个体采纳决策时往往会受到网络效应和跟风效应的影响,进而会考虑创新的用户规模和邻居决策。本文提出了基于复杂社会网络分析创新扩散问题的研究思路,从微观角度定量刻画了个体间的相互关系和动态交互过程;相对于传统的宏观扩散模型,更准确地描述了创新扩散中的众多复杂性现象。 在理论分析的基础上,本文借助复杂网络理论中的无标度网络模型构建了一个复杂社会网络,并通过Matlab7.9 ...
温雅
core  

3D‐Printed Porous High‐Entropy Alloy Boosts Peroxymonosulfate Activation for Long‐Term Organic Pollutant Degradation

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT High‐entropy alloys (HEAs) have attracted considerable interest from researchers owing to their tunable chemical compositions, exceptional structural stability, and promising catalytic properties. However, their large‐scale application is often hindered by complex manufacturing techniques and poor durability.
Sheng Guo   +9 more
wiley   +1 more source

The Extension of Dual-channel Supply Chain Model Based on Strategic Customer WTP [PDF]

open access: yes, 2016
电子商务和物流业的快速发展增加了顾客购物的便利性,很多制造商会在传统零售渠道的基础上,增加电子渠道来迎合顾客购物足不出户的愿望,节约了顾客的时间,大大提高了交易的效率,比如苹果、三星、海尔、联想等都采用传统渠道与电子渠道相结合的销售方式。电子渠道不仅吸引了制造商,也吸引了传统零售商,从而形成产品多渠道销售的模式。同时顾客也在多渠道中权衡利弊,做出最有利于自身的购买选择。本论文以双渠道供应链的战略顾客选择模型为基础,分别在顾客类型、销售时期、产品类型、销售渠道四个方面进行扩展,综合应用顾客剩余效用分析法 ...
赵洋
core  

Sodiumation of Biomass‐Derived Quinones Enables High‐Rate and Long‐Life Cathodes for Sodium‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Biomass‐derived quinones are promising green and sustainable cathode materials for sodium‐ion batteries (SIBs), yet their practical application is hindered by poor cycling stability due to dissolution in conventional electrolytes. Herein, we demonstrate that sodiumation is an effective strategy to enhance both rate capability and cycling ...
Xinyue Zhu   +4 more
wiley   +1 more source

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