网络媒体冲击下高校新闻传播专业课程的调整

与传统媒体相比,具有“第四媒体”之称的网络媒体在信息传播上更具优势;这种状况应当引起高校新闻传播专业相关专家学的关注与研究兴趣,并对专业的发展和人才培养的相关课程做出适当的调整．     

论新闻媒介的风险传播

风险传播是新闻传媒义不容辞的职责。在传播方案上,大众传播媒介应与网络媒介联手进行风险传播。在传播策略上,大众传播媒体的风险传播要适时适度,网络媒体的风险传播要放开;新闻传媒在风险传播中的新闻价值取向必须符合价值理性,以公众关注的公共利益和不损害公共利益的公共兴趣为选择标准。     

基于新浪微博的异常数据检测研究

大数据时代的到来对传统媒体的影响首当其冲。由互联网技术衍生出的一大批新媒体,如Facebook、微博、微信等,它们的生产方式和传播方式完全不同于传统媒体。这些新媒体稀释了传统媒体的影响力,撼动了传统媒体对新闻生产和传播的垄断地位,引发传统媒体的生存危机。就此提出＂纵＂＂横＂方法,能较全面地挖掘新浪微博中的异常数据。在这个传统媒体转型的发展机遇期,传统媒体要寻求突围,让数据真正成为新闻生产的核心资源。     

新闻传播巧实力探析

文章从新闻传播巧实力入手,探析了巧实力的由来,以及对新闻传播巧实力的认识。提出了提升新闻传播巧实力的路径：讲求新闻传播艺术;新闻传播要改革创新;打造新闻传播队伍;提高运用新兴媒体能力;信息公开要及时、充分、透明、有效。     

西部民族地区高校新闻传播教育发展探析

章通过对西部民族地区新闻传播教育发展的探讨，认为西部民族地区高校办学条件较差，规模和实力还显薄弱，在发展新闻教育中要发挥民族优势，树立大新闻教育观，切实抓好基础教育，打破地域观，挑战市场，以促进民族地区新闻传播教育的发展。     

论新闻博客生态系统

在对3类新闻博客及其传播影响进行分析的基础上,阐述了方兴东构建的博客与传统媒体的共生生态系统,并对新闻博客和草根记者的新闻规范进行了揭示,以期推动新闻博客与传统媒体的共生与融合。     

论新闻传播中人文精神的缺失

新闻是对新近发生的事实的报道。在新闻传播过程中,媒体不仅要关注新闻的传播效应,更应该重视传播中人文精神的弘扬。媒体作为具有公信力的信息传播平台,倡导人文精神是其义不容辞的社会责任。     

来自虚拟空间里的对新闻业的真实挑战

网络对于不同的国家、社会和人群,有着不同的含义。对于某些人来说,网络是一个赚钱的商业机会;对另一些人来说,网络弥补了传统媒体在采集和传播新闻上的缺陷;对于另外一些人来说,改进了电信的基础设施;对于另外一些人来说,网络是打破西方媒体霸权的舞台;又对于另外一些人来说,网络是公民们在一个封闭社会里讨论政治话题的公共论坛。只有理解了网络在全球性传播中的这些作用,才能深入研究网络新闻和网络记者在全球不同文化和社会传播中的潜在作用。     

网络新闻传播失真原因探析

造成当前网络新闻传播失真的原因主要有:网络编辑抛弃了新闻真实性原则,且把关不严,让假新闻有机可乘,另外,一味猎奇、追求新闻轰动效应,也势必会坠入制假贩假的泥坑。解决网络新闻传播失真的途径在于社会各界都应积极采取相应的对策:政府应加强对网络新闻传播的法律监管;网络媒体要加强对从业人员新闻真实性原则的教育;网民要提高网络道德水平。只有这样,才能提高网络公信度。     

作为新型媒体的科技期刊转型升级研究

科技期刊传播史就是新媒体不断代替旧媒体的发展历程,当前我国中文科技期刊的数字化和网络化传播方式在新型媒体与传统媒体的融合中面临着一些困难和障碍,同时与国外一流科技传媒还存在不小差距;应当借鉴国际著名科技周刊《自然》(Nature)等媒体的先进经验,加速改进我国的科技论文网络传播和推广方式,以迎接我国新型媒体与传统媒体融合发展的现实需要,并应对未来国际科技传媒的挑战。     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.     

Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices, an interest in LBS (Location Based Service) is arising. To provide location based service, tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then, store and manage have been studied. In this paper, we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques, we update the MODBMS when moving object arrived at a street intersection or a curved road which is represented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique, location data that are corresponding to the node in topology are stored, thus reduce the number of update and amount of data. Also in case predicting the location,because topology are used as well as existing location information, accuracy for prediction is increased than applying linear function or spline function.