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   

Using APIs for Data Collection on Social Media     

Stine Lomborg  Anja Bechmann 《The Information Society》2014,30(4):256-265

This article discusses how social media research may benefit from social media companies making data available to researchers through their application programming interfaces (APIs). An API is a back-end interface through which third-party developers may connect new add-ons to an existing service. The API is also an interface for researchers to collect data off a given social media service for empirical analysis. Presenting a critical methodological discussion of the opportunities and challenges associated with quantitative and qualitative social media research based on APIs, this article highlights a number of general methodological issues to be dealt with when collecting and assessing data through APIs. The article further discusses the legal and ethical implications of empirical research using APIs for data collection.  相似文献   

Migrating product structure bill of materials Excel files to STEP PDM implementation     

《International Journal of Information Management》2014,34(4):489-516

It is important for manufacturing companies to provide a standard for product data exchange between diverse computer systems. Past attempts to develop neutral format standards for data exchange have had limited success, and have led to the development of STEP (Standard for the Exchange of Product) as a data exchange standard. The STEP standard makes it easier to integrate systems that process various product life-cycle functions, such as design, engineering, manufacturing, logistics support, and will help to facilitate concurrent engineering. The goal of this paper is to facilitate the computer-readable exchange of the product bill of materials (BOM) information for product data management (PDM). In this paper, the STEP ISO 10303-21 is implemented to share the product data information in a manufacturing environment. A structural product bill of materials is first transformed into an Excel file format, then a PDM Schema Exporter is utilized to export a BOM Excel file to a STEP Part 21 file. A C# program decodes the STEP file into BOM information to update the PDM databases in SQL server for product data management. Also, SAS code is written to generate the indented bill of materials from the BOM information, to draw a tree diagram to present an accurate structural view of a product, and to export to PDM databases for product data structural view.  相似文献   

Automatic thematic classification of election manifestos     

Suzan Verberne  Eva D’hondt  Antal van den Bosch  Maarten Marx 《Information processing & management》2014

We digitized three years of Dutch election manifestos annotated by the Dutch political scientist Isaac Lipschits. We used these data to train a classifier that can automatically label new, unseen election manifestos with themes. Having the manifestos in a uniform XML format with all paragraphs annotated with their themes has advantages for both electronic publishing of the data and diachronic comparative data analysis. The data that we created will be disclosed to the public through a search interface. This means that it will be possible to query the data and filter them on themes and parties. We optimized the Lipschits classifier on the task of classifying election manifestos using models trained on earlier years. We built a classifier that is suited for classifying election manifestos from 2002 onwards using the data from the 1980s and 1990s. We evaluated the results by having a domain expert manually assess a sample of the classified data. We found that our automatic classifier obtains the same precision as a human classifier on unseen data. Its recall could be improved by extending the set of themes with newly emerged themes. Thus when using old political texts to classify new texts, work is needed to link and expand the set of themes to newer topics.  相似文献   

大数据时代营销创新研究的价值、基础与方向     

李巍  席小涛 《科技管理研究》2014,(18)

大数据研究已经成为当前理论研究热点,但其与管理学,特别是与营销管理研究的结合还非常缺乏。在分析大数据时代营销创新研究现实价值的前提下,从大数据与营销创新研究两方面系统梳理现有研究基础,进而基于技术发展与管理变革互动的视角提出大数据时代营销创新研究的三大方向,即大数据的营销应用价值研究、大数据时代营销创新的内在机理与支撑体系研究。旨在将大数据与营销管理变革有效结合,为推动大数据时代营销创新的相关研究提供基础借鉴与方向指引。  相似文献   

基于PXle总线和LabVIEW数据采集     

董锋剑  何倞  张羽 《中国科技信息》2014,(2):94-96

本文介绍了以PXle总线体系结构作为数据采集开发平台,可以轻松实现对多种不同类型信号的测量,增强了可扩展性,使设计方案更简便、更灵活.PXle与LabVIEW虚拟仪器软件建立应用系统,提高了数据存储带宽,为大数据、多参量、同时高速采集,图型化显示提供了一种方法,实现测量数据的快速存储和显示.  相似文献   

大数据环境下的图书馆知识服务新趋势     

符静 《情报探索》2014,(6):125-128

基于CNKI知识平台,通过对大数据和知识服务发展趋势相关文献的检索和调研,分析大数据环境与图书馆知识服务的本质联系,总结归纳相关信息和观点,指出大数据环境下图书馆知识服务的新趋势.  相似文献   

面向集团企业的商业智能系统构建研究     

穆红梅  王伟 《情报探索》2014,(2):86-89

概述了商业智能的涵义及实现过程,在分析集团企业的商业智能需求及模式的基础上,以中石油某集团公司为例,提出了一个面向集团企业的具体的完整的商业智能解决方案.  相似文献   

论图书馆大数据在读者决策采购中的应用     

李建伟 《情报探索》2014,(6):76-79

阐述读者决策采购是图书馆未来电子资源采购的重要模式,提出大数据将给图书馆个性化读者决策采购带来新的发展机遇,同时就如何将大数据应用到图书馆读者决策采购中提出建议并解决方案.  相似文献   

基于大数据挖掘的学科化信息服务系统研究     

栾旭伦 《情报探索》2014,(11):107-110

阐述了当前高校图书馆学科化信息服务面临的困境,对造成困境的原因进行了探讨。对基于大数据挖掘开展学科化信息服务的可行性进行分析,提出构建基于大数据挖掘的学科化信息服务系统,并对系统的相关功能进行了详细论述。  相似文献