基于Hadoop农业大数据管理平台的设计

信息技术的高速发展使得每天的数据量以TB级速度暴增,如何有效利用和管理这些爆炸式增长的大数据呢？是当前亟待处理的问题.大数据已经渗透到包括农业领域在内的各个领域,随着农业信息化建设以及物联网技术在农业生产中的应用,产生了海量的农业大数据待存储、管理和处理.本文以成都农业科技职业学院彭州葛仙山农业示范基地的农业信息化建设为背景,根据农业物联网和信息化建设要求,构建高性能基于Hadoop农业大数据管理的平台,实现农业大数据的安全可靠存储、智能管理与应用,最终达到对农业生产的智能预警、智能决策和智能分析的目的,并为农户提供专业的指导.为我国进入精细化种植、精准化控制、可视化管理、智能化决策的智慧农业时代奠定基础.     

基于物联网时代下的大数据统一分析平台研究

当今社会是信息化的时代,云计算作为新兴的计算模式被提出并广泛应用,网络数据共享化的迅速发展促使了大数据时代的飞速到来.而由物联网带来的第三次信息化革命孕育了大数据,反之大数据助力物联网的架构填充.为使信息化与网络数据得以统一发展,应加强大数据统一分析平台的研究与设计,从而使在物联网时代下以云计算为基础的大数据发展可以有效推动产业优化及发展.     

农业物联网体系结构与应用领域分析

农业物联网属于集成互联网、计算机以及通信技术并将其运用到农业领域的一种网络结构,同时它也是促进农业朝向信息化和智能化发展的必要条件.在农业物联网获得快速发展的背景下,多种形式的农业物联网系统开始不断涌现,目前,由于我国尚未对农业物联网体系结构作出全面分析,因此,使各个农业物联网在应用的过程中出现了一系列的问题.基于此,文中从农业物联网的体系结构出发简要分析了农业物联网技术的应用发展.     

基于物联网的农业感知数据融合应用研究

随着物联网技术的不断发展,在农业领域中物联网技术得到了广泛的应用.农业物联网主要是通过传感器技术,对农业领域生产和管理的数据信息进行收集,所以农业感知数据的融合在农业物联网应用中是非常重要的.对农业物联网技术及农业感知数据的特点进行了分析,对农业物联网中农业感知数据融合的方法进行了研究,结合农业物联网技术应用的实际情况,对基于物联网的农业感知系统的硬件和软件进行了设计和研究.     

物联网在智慧农业中的应用研究

通过分析和研究物联网及智慧农业相关知识,提出了物联网在智慧农业中的应用架构。通过对智慧农业物联网产品的介绍以及产品的商业模式营销策略的阐述,得出了基于物联网的智慧农业是有很好的发展前景的,能够推动我国现代农业的信息化发展。     

大数据时代物联网技术的应用与发展

新时期,大数据背景下,我国物联网技术的应用及发展逐渐广泛,同时我国物联网技术的创新也提升了一个层次。本文对大数据时代物联网技术的应用与发展进行分析,首先对大数据与物联网结合的优势进行分析,其次对大数据时代背景下的物联网应用技能实现研究,最后对物联网在新时期的应用以及发展进行研究,希望本文可为物联网技术的发展提供参考。     

基于物联网的智慧高校信息化建设分析

随着电子信息技术的快速发展和不断完善，有专家基于物联网、大数据等技术对建设智慧校园进行了深入研究。在信息化和数字化的发展过程中，信息化已融入社会的各个领域，智慧校园建设也随之发展起来。智慧校园的建设需要物联网的支持，物联网的技术离不开互联网的发展。本文对物联网技术和智慧校园建设进行了理论总结和归纳，并对物联网技术在智慧校园信息化建设中的作用进行了分析，以此建立一个综合性的信息服务门户，解决目前建设中的诸多问题，保证数据的正确传递，保证物联网技术在智慧校园信息化的应用。     

基于区块链的农业物联网可信溯源体系

随着农业信息化的快速发展,农业物联网逐渐成为智慧农业必要的基础设施.未来智慧农业依赖大量的物联网传感器,为了解决农业物联网中数据孤立、不可靠、容易被篡改、难以追踪追责的问题,本文提出了一种基于区块链的农业物联网可信溯源体系.考虑农业物联网数据量大、种类繁多的特点,本方案基于Hyperledger fabric智能合约,...     

物联网算法分析及设计在农业工程中的应用

随着物联网技术的不断发展,使一切变得智能化,各个领域的发展找到了新的整合点。农业生产的发展随科技的进步趋向精细化,在现代农业工程中,基于物联网技术存在的传感、感知等功能,有效监测农业周围环境,实时了解农产品的信息,通过数据整合和处理,农业工程可以实现集约化生产。对农业工程来说,应用物联网算法分析及设计技术,可以进行农业的生产、流通、管理、监控,促进农业高质量发展。     

智慧城市中大数据时代下物联网技术的运用

“智慧城市”“大数据”及“物联网”都是时代与科技飞速发展的产物，大数据时代下，物联网技术在智慧城市中的广泛应用更是给人们的日常生活带来了便利，提高了人民生活水平，也促进了城市的发展。本文简要介绍了智慧城市中大数据时代下物联网技术的定义及“智慧城市”“大数据”“物联网”三者之间的关系，并以智慧医疗为例，对当下智慧城市中物联网技术的应用情况进行了阐述和举例说明，希望能够让更多人关注物联网技术和智慧城市的发展，使智慧城市中大数据时代下物联网的应用更加广泛和高效。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Call for Papers The 6^th International Conference on Grid and Cooperative Computing

Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and     

Editorial:Brain-machine interface(BMI) and cyborg intelligence

正Brain-machine interfaces(BMIs)aim at building a direct communication pathway between the brain and an external device,and represent an area of research where significant progress has been made during the past decade.Based on BMIs,mind information can be read out by neural signals to control     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate     

SCIENCE CHINA Information Sciences SUBJECT INDEX TO VOLUME 57(2014)

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