大数据技术对新闻传播领域的影响分析

近些年,大数据技术在我国新闻传播领域备受关注与青睐,发挥着极为重要的积极作用,很大程度上影响着新闻信息的采集与发布、新闻传播内容的报道与呈现方式等多个环节.这种背景下,新闻媒体的传播领域迎来了诸多的发展机遇与挑战,媒介融合新理念应运而生,为未来的新闻媒体建设发展提供了良好的优先条件.大数据时代的到来,为了有效顺应时代的...     

现代信息技术大数据对新闻传播的影响初探

随着科技的进步和社会经济的发展,信息技术大数据渗透到人们生产生活的各个领域,信息技术大数据在新闻领域也得到广泛的应用,大数据的发展开启了新的时代。基于此,本文主要就现代信息技术大数据自身的一些特征和对新闻传播的影响加以探究,并简述了现代信息技术大数据背景下的新闻传播发展的策略,以供参考。     

2008PU年度新闻事件——PU界的奥斯卡盛宴

最佳影片（Best Picture）——金融危机下的PU众生相主演：MDI、TDI、AA、PPG...关键词：低迷、冷淡、急剧下滑描述：对于2008年造成巨大影响的末过于美国引发的全球金融危机,虽然这场经济灾难的全面爆发始于下半年,但是小半年的时间却重创了全球经济的每一个层面。聚氨酯原料市场遭受严重影响。     

浅视频影像技术在体育教学中存在的问题与辅助软件的设计探析

在Internet中很容易获得体育比赛的视频录像,这说明人们对体育比赛的视频录像有很大需求。分析了视频影像技术在体育教学中存在问题与困难,研发出一款教学辅助的软件,是一次把多媒体技术引入体育学科的实践,对体育辅助教学软件的研发有一定参考价值。     

释放显影抑制剂型成色剂在彩色影像形成过程中的动力学研究Ⅱ.DIR和DIAR成色剂对染料影像形成的主反应的影响

继前文测定了成染料成色剂、DIR和DIAR成色剂与QDI的偶合反应的速率常数的基础上,本文进一步研究了DIR和DIAR成色剂对染料影像形成的主反应的作用.研究结果表明其作用(1)DIR或DIAR参与与成染料成色剂竞争QDI的反应,从而控制了QDI在显影银周围的扩散距离,同时也影响了染料的形成速率;(2)DIR和DIAR成色剂在与QDI反应后所释放的显影抑制剂抑制了卤化银的显影进程,从而控制了QDI的形成速率.两种作用的结果都使染料云的尺寸减小.本文还比较了体系中加入等摩尔(mol)量的带有相同抑制基团的DIR或DIAR成色剂的情况下,它们对主反应的影响,结果表明无论是对QDI的竞争作用或对显影的抑制作用,其作用大小都取决于它们与QDI反应的表现速率常数K值.     

审时度势，于危机中抢抓机遇加速发展——在纪念花炮祖师李畋诞辰1388周年报告会上的讲话

今天是花炮祖师李畋的诞辰之日。我们上栗人民非常感激祖师为我们发明的这一好的技术,她养育了我们一千多年。因此,花炮不仅仅是我们上栗的一个产业,我觉得花炮更是我们无法割舍的一种文化,一种习俗。     

品红甲亚胺染料影像光稳定性的研究——抗氧化剂和单重态氧的反应能力及其对染料影像光褪色的影响

本文研究了苯酚类(A),双酚类(B),对苯二酚类(C),色满类(D)和双螺色满类(E)抗氧化剂的性能。通过循环伏安法测定了它们的氧化电位;用类似Stern-Volmer关系图求得各抗氧化剂和单重态氧的反应速率常数。抗氧化剂的氧化电位越小,和单重态氧的反应速率常数越大,对品红甲亚胺染料影像的防褪色效果越好,进一步证实了染料褪色的光氧化反应机理。在这些抗氧化剂中,它们的防褪色效果依次为D>E>C>B>A。     

换热器中介质温度对超声波传播特性的影响

在超声波防除垢试验台上,通过实验研究温度对除垢超声波传播特性的影响。保持液体流速、超声波发射频率和功率恒定,测量不同温度下换热管测点1和测点2处声强的大小,分析超声波声强随温度变化的规律,确定介质温度对换热管道内超声波传播特性的影响。结果表明:实验温度在25～55℃范围内时,超声波衰减随温度的升高而减小;实验温度在55～75℃范围内时,超声波衰减随温度的升高而增大。     

浅议调度辅助决策系统和服务热线系统在应急供水事件中发挥的重要作用

最近几年来,我国突发性水源污染事件频频发生,造成城市大面积长时间的停水事件屡见不鲜,给城市供水安全造成了严重威胁,给人民生产生活带来了极大的影响。突发水源污染事件的发生,目前还难以做到完全避免,对于城市供水企业来说,在未做到完全避免上述突发污染事故的现状下,关键是要完善应对突发污染事件的应急措施和技术手段,建立从水源到水厂直至管网中用户的多级屏障,积极应对供水水源污染,最大限度减小突发性污染造成的损失及影响,维护社会稳定。     

对高等数学在高校课程体系中地位的思考

本文论述了高等数学在高校课程体系中的重要地位,并对高等数学课程在教学内容、教学方法和手段方面的改革进行了讨论.     

电视新闻摄像师编导意识提升的策略探讨

本次研究的主题是探讨在当下电视新闻工作当中,重视对摄像师的编导工作人员的意识提升工作,在实际的工作过程当中进行提升策略的应用,以此满足时代发展对新闻工作质量的进一步要求。本次研究从电视新闻提升摄像师的编导工作人员意识的重要性入手,针对提升的意义进行深入的分析和讨论。从实际的工作过程中能够发现,为完善电视新闻的创作体系需要意识提升作为基础和前提,与此同时还需要为电视新闻的创作节约成本,这也是意识提升的重要成果展示。在电视新闻创作以及传播的工作过程当中,进行摄像师的编导工作人员的意识提升,主要采取三种对策建议。首先是提升工作人员的艺术构思和理念,其次是提升工作人员的团队合作意识,再者就是强化实际的工作经验,以此满足行业发展的需求,促进电视新闻行业长足的进步和发展。     

Experimental study of the influence of adhesive reinforcement in lap joints for composite structures subjected to mechanical loads

The paper deals with experimental investigations on reinforcing the adhesive in single lap joints subjected to mechanical loads such as tensile, bending, impact and fatigue. The adhesive used for bonding was an epoxy reinforced with unidirectional and chopped glass fibres as well as micro-glass powder. The adherends were glass reinforced composite laminates. The bonding surfaces were prepared before joining. In the case of unidirectional fibres in the adhesive region, the fibre orientations considered were 0°, 45° and 90°. The volume fraction of fibres in the adhesive layer in all the cases was 30%. The volume fractions of micro-glass powder were 20%, 30% and 40%. The tensile, bending, impact and fatigue tests on the prepared specimens were conducted according to ASTM standards. The results show that except the 90° unidirectional orientation, reinforcing the adhesive with glass fibres or powder increases the joint strength. The use of volume fraction of 30% of micro-glass powder gave the best performance in the above loading conditions. The fatigue life increased by 125%, the ultimate joint strength in tension increased by 72%, the bending ultimate joint strength increased by 112% and the impact joint strength increased by 63%. The microstructure of the debonded area was examined and three modes of failure could be observed namely cohesive failure, light fibre-tear failure and thin layer cohesive failure.     

CuO-ZnO/HZSM-5催化剂制备条件对其活性的影响

本文采用固定床反应装置对共沉淀法制备的二甲醚合成催化剂CuO—ZnO／HZSM-5制备条件进行考察,结果表明：CuO／Zn0=1（摩尔比）、沉淀温度在68～75℃之间、共沉淀时的pH值为9左右时,催化剂的活性最好。     

Characterization of multiwall carbon nanotubes and influence of surfactant in the nanocomposite processing

Carbon nanotubes prepared by a classical CVD method with a nickel catalyst have been characterized, then used as conducting anisometric objects dispersed into a polymeric matrix. In a first part, these nanotubes are structurally characterized before and after heat treatments (HTT=1500, 2000, 2500 °C). Diffusion Raman experiments and diamagnetic susceptibility experiments demonstrated their limited graphitized structures.Then, in a second step, a well defined processing way to prepare nanocomposites with a standard epoxy resin is presented. In particular, the use or not of a non-ionic surfactant (Tergitol) to disperse these nanotubes is analyzed. The influence of nanotube contents is examined on the bulk nanocomposite density, the glass transition temperature of the nanocomposites, and the d.c. electrical conductivity behavior. These results demonstrated that the interfacial properties are playing a fundamental role. On one hand, the glass transition temperature is increasing with the nanotube content, and on the other hand, the percolation threshold is found for a rather high critical volumic concentration. Finally, it is demonstrated that a pure geometrical model is not sufficient to explain these behaviors and that a wrapping effect of the organic matrix around the nanotubes has to be considered.     

Surface compatibility in a carbon-alloy composite and its influence on the electrochemical performance of Li/ion batteries

Carbon-alloy composites were prepared by coating carbon materials with different surfaces with Sn, Sb or SnSb. The SnSb-hard carbon spherule (HCS) composite electrode shows the best cycling performance. The matching of crystalline parameters between SnSb and the carbon ensures a good dispersion of SnSb alloy on the surface. The high density of the nucleation centers on the HCS surface leads to a small SnSb crystallite size. Open pores on the surface of HCS, into which the alloy crystals are allowed to grow, act as pinning centers, which further stabilize the composite. These three factors are supposed to be responsible for the best cyclic performance of SnSb-HCS composite. The latter two factors also result in a large BET surface area, which leads to a large initial irreversible capacity loss, because more solid electrolyte interface film is formed. It seems that the best cyclic performance and the highest initial efficiency are paradoxical in the SnSb-carbon composite. Further surface modification should be conducted to obtain better electrode materials.     

Technological parameters that influence the production of ozone in A .D. C. Corona discharfe

Experiments using dry oxygen in a wire–to–cylinder ozone generator, submitted to D.C. corona discharges show that technological parameters (diameter and composition of wire and cylinder, length of cell, gas flow and transit time of the gas) greatly influence ozone production. The cell geometry to be used depends on the polarity of the D.C. voltage applied to the wire and, for a predetermined design, the maximum ozone production rate will be obtained by seeking the most suitable gas flow. Lining up a series of optimized cells can give significant results.     

电吸附除盐技术在某纺织集团的工程应用

某纺织集团以河水为水源水用于工业生产,其采用电吸附除盐技术对河水进行脱盐,在原水平均电导率为389μS/cm,平均硬度、氯离子质量浓度分别为119、64.7 mg/L的情况下,出水的平均电导率为118μS/cm,平均硬度、氯离子质量浓度分别为40、13.6 mg/L,出水指标完全满足宁波某纺织集团分公司对工业生产用水的要求。     

Investigation of grain boundaries influence on dielectric properties in fine-grained BaTiO3 ceramics without the core–shell structure

Grain boundaries of the Ca-doped and fine-grained BaTiO₃ (BT) ceramics were investigated in order to understand the role of grain boundaries, using a high-resolution transmission electron microscope (TEM) analyses, X-ray diffraction (XRD) and chemical etching analyses. Electrical properties and complex impedance spectroscopy of multilayer ceramic capacitors (MLCs) using Ca-doped BT were also examined to investigate with reference to the roles of grain boundaries. Doped elements were peculiarly enriched at the grain boundaries and tetragonality of the BT ceramics recovered significantly after grain boundaries were etched. It is confirmed that the grain boundaries have a significant influence in stabilizing the temperature dependence of the dielectric properties, and that the residual stress is caused by grain boundaries with the grain growth inhibited during sintering. In addition, the high reliability of BT ceramics without the core–shell structure is considered to be due to the high resistivity of the grain boundaries.     

疏水缔合聚合物剪切降解对SZ36-1油田采出水稳定性影响

研究了不同剪切降解聚合物对原油模拟油与模拟水体系的界面张力、界面剪切粘度、Zeta电位的影响.结果表明,水相为疏水缔合聚合物溶液时,随聚合物剪切降解程度增加,原油模拟油油水界面张力降低,界面剪切粘度减小,Zeta电位的绝对值总体呈增加趋势.