Creating value in ecosystems: Crossing the chasm between knowledge and business ecosystems   总被引：1，自引：0，他引：1  

Bart Clarysse  Mike Wright  Johan Bruneel  Aarti Mahajan 《Research Policy》2014

Policy makers take initiatives to stimulate knowledge ecosystems in technology hotspots. It is implicitly assumed that these ecosystems will lead to value networks through which the participating companies can realize a competitive advantage. Value networks refer to business ecosystems where the value proposition is offered by a group of companies which are mutually complementary. The strategy literature suggests that business ecosystems lead to competitive advantages for each of the partners in the ecosystem. Based on a unique hand-collected database of 138 innovative start-ups in the region of Flanders, we analyze the knowledge and business ecosystem and the financial support network. We find that the knowledge ecosystem is well structured and concentrated around a number of central actors while the business ecosystem is almost non-existent at the local level. Further, we find that the financial support network is almost 100% publicly backed and fails to bridge the knowledge and business ecosystem. The implications for policy makers who tend to focus on the development of local ecosystems are discussed.  相似文献   

Real time exploration and management of large medical volumetric datasets on small mobile devices—Evaluation of remote volume rendering approach     

Tomasz Hachaj 《International Journal of Information Management》2014

In this paper I present the architecture of system that can be used for real time exploration and management of large medical volumetric datasets. The new state of the art solution presented in this paper is an example of visual data management system. System prototype evaluation proved that it is possible to use low-powered (and cheap) up-to-date mobile devices with programmable GPUs as the remote interfaces for exploration of large volumetric medical data. The implementation was done with high-level programming language that enables portability between different hardware models. The lack of lossy compression enables to display high quality medical images visualizations without any simplifications and noises in frequency domain. The prototype of system is capable to remotely render and send to a client (for example cell phone or tablet) rendered data with frequency 30 fps with limited resolution during interaction. One second after the interaction is finished client machine receives full resolution image. The evaluation of the system was performed on volumetric computed tomography angiography image with approximate size 512³ voxels.  相似文献   

Knowledge flows and bases in emerging economy innovation systems: Brazilian research 2005–2009     

Branco Ponomariov  Hannes Toivanen 《Research Policy》2014

This article considers the role of domestic knowledge capabilities for developing countries and emerging economies, and in particular in the build-up of their national systems of innovation. Using bibliometric methods, we describe the geographic sources of knowledge and the users of Brazilian research in 2005–2009, and analyze the roles of domestic and foreign knowledge bases in it. Our results suggest that increasing reliance on domestic sources of knowledge is a feature of Brazil's improved science and technology capabilities. The ascendancy of Brazil's research informs us about the unfolding re-organization of global research, too, underlining nascent South-South knowledge flows, the prevailing relevance of EU research, and the relative decline of US research for Brazilian knowledge creation.  相似文献   

Adaptive output feedback neural network control of uncertain non-affine systems with unknown control direction     

Mohammad M. Arefi  Jafar Zarei  Hamid R. Karimi 《Journal of The Franklin Institute》2014

This paper deals with the problem of adaptive output feedback neural network controller design for a SISO non-affine nonlinear system. Since in practice all system states are not available in output measurement, an observer is designed to estimate these states. In comparison with the existing approaches, the current method does not require any information about the sign of control gain. In order to handle the unknown sign of the control direction, the Nussbaum-type function is utilized. In order to approximate the unknown nonlinear function, neural network is firstly exploited, and then to compensate the approximation error and external disturbance a robustifying term is employed. The proposed controller is designed based on strict-positive-real (SPR) Lyapunov stability theory to ensure the asymptotic stability of the closed-loop system. Finally, two simulation studies are presented to demonstrate the effectiveness of the developed scheme.  相似文献   

基于AHP和TOPSIS的高校优秀馆员选拔     

赵小翠 《情报探索》2014,(6):40-42

分析了图书馆员工作的实际情况,建立了优秀图书馆员的评价指标体系.采用层次分析法（AHP）和逼近理想解排序法（TOPSIS）相结合,提出了一种优秀图书馆员评价与选择模型,并通过实例验证该方法的可行性.  相似文献   

基于问题求解思维能力培养的程序设计教学实践--以累加求和问题为例     

童键  刘卫国 《人天科学研究》2014,(4):184-186

问题求解思维是程序设计的重要特点,也是计算思维的重要形式。以累加求和问题为例,呈现了课堂教学的组织方式,详细分析了算法形成过程,有助于学生掌握问题求解的思维规律和方法,培养计算思维能力。  相似文献   

数字鸿沟视角下社会图书馆系统用户感知差异性实证研究     

严安 《现代情报》2014,34(1):79-83

百度产品如百度知道、百度百科、百度文库等是基于Web2.0应用的知识共享平台,用户不仅可以搜寻知识,而且可以贡献知识,被认为是重要的社会图书馆系统。本文结合数字鸿沟,探讨用户对百度产品易用性（能力鸿沟）和有用性（产出鸿沟）的感知差异,旨在推动社会图书馆系统的健康发展。首先进行量表设计;然后基于量表搜集数据;再针对数据进行分析,包括测量模型有效性检验、易用性和有用性的频数统计及相关分析;结合数据分析,用图的方式展现了用户在感知差异性上的分布状态,发现能力鸿沟和产出鸿沟之间存在高度相关性。  相似文献   

补阳还五汤治疗中风后遗症的研究进展     

张明明  邱全 《大众科技》2014,(11):126-127

补阳还五汤为清代名医王清任所创,始见于《医林改错》,由黄芪、当归、川芎、地龙、赤芍、桃仁、红花组成,具有补气活血通络的功效。临床的治疗研究与实验证明,本方对于治疗中风后遗症效果良好,尤其以气虚血瘀型效果明显。现代研究表明,补阳还五汤具有抗血栓、抗氧化、抗动脉粥样硬化、和促进神经系统修复等多种作用。文章综述了近年来补阳还五汤对中风后遗症的临床治疗实验及相关研究进展。  相似文献   

新媒体涉军舆情管理策略研究     

李东  ;杜柯柯  ;张忠强 《未来与发展》2014,(7):24-27

新媒体时代涉军舆情呈现出虚拟性与现实性相互交织、互动性和失衡性同时存在、无序性和难控性不断凸显等显著特点。在分析新媒体涉军舆情管控矛盾的基础上,提出加强教育引导,筑牢思想“防火墙”;完善管控机制,打好防范“主动仗”;讲究方法策略,形成应对“组合拳”等对策建议。  相似文献   

篮球比赛攻守状况的比较研究     

张文祥 《大众科技》2014,(3):136-140

通过对篮球运动攻防的演进历程和各个阶段的奥运会篮球比赛,世界篮球锦标赛以及NBA篮球联赛攻守发展变化的分析研究,对篮球运动诞生100多年以来的攻守变化状况进行分析,着重分析探讨当今世界篮球运动的攻守现状及发展趋势。同时,结合中国篮球的现状,分析中国篮球与世界强队的差距,找出中国篮球攻守的问题所在,为提高我国男子篮球运动水平提供理论依据。  相似文献