构筑声音“画面” 让广播新闻更具感染力

单以声音为传播媒介的广播新闻,虽然没有办法给听众提供可直接看到的五彩斑斓的有形画面,但可以运用有表现力的主题音响、有层次的背景音响和生动的细节描述,为听众构筑丰富、立体、可感的声音“画面”,让广播新闻更具感染力。

“画面构图”的教学

以上两幅作品是我所教的二年级学生的作品。是的，正如你所见，缺乏整体的概念，画面分散，不连贯，这是低年级学生在绘画过程中忽视了构图这一重要因素造成的。如何让低年级学生学会构图呢?什么样的方法最直观、最形象化呢?抽象的画面平衡感与节奏感学生能掌握吗?

动听是广播新闻的亮点

广播节目是声音艺术,追求听觉形象、引人入胜、形式灵活多样。不拘一格的报道模式实现了广播的人性化回归,较好地体现了新闻的受众本位主义。本文就提高广播节目的动听性,提出其以下实现途径。

Approach of simultaneous localization and mapping based on local maps for robot

An extended Kalman filter approach of simultaneous localization and mapping(SLAM) was proposed based on local maps. A local frame of reference was established periodically at the position of the robot, and then the observations of the robot and landmarks were fused into the global frame of reference. Because of the independence of the local map, the approach does not cumulate the estimate and calculation errors which are produced by SLAM using Kalman filter directly. At the same time, it reduces the computational complexity. This method is proven correct and feasible in simulation experiments.

Screening efficiency and screen length of a linear vibrating screen using DEM 3D simulation

The effect of screen length on the screening efficiency of particles is studied under various single parameter conditions including frequency, amplitude, vibration angle, and screen inclination. The Discrete Element Method (DEM) has been used to simulate the screening process. A functional relationship between screening efficiency and screen length is established. It is shown that screening efficiency and screen length have a complicated exponential relationship. Relationships between them are profoundly discussed and conclusions are easily drawn: low values of the parameters do not benefit screening; screening efficiency generally increases with screen length; screening efficiency reaches a plateau when these parameters are in range frequently encountered in practical applications.

Screen and effect analysis of immunostimulants for sea cucumber,Apostichopus japonicus

Immunostimulants may improve disease resistance of aquaculture animals by promoting the nonspecific immunity response of the organisms. Five types of saccharides, including chitosan, yeast polysaccharide, burdock oligosaccharide, seaweed polysaccharide and lentinus edodes polysaccharide, were screened for potential use as immunostimulants by using spectrophotometry. The saccharides were injected into Apostichopusjaponicus, a sea cucumber, and the lysozyme and superoxide dismutase （SOD） activities of the coelomic fluid and epidermal slime were monitored in six consecutive days. The results show that the lysozyme activity of the animal＇s coelomic fluid was significantly stimulated on day 2, day 4 and day 6 after the injection of the saccharides （P〈0.05）. The effects of chitosan and yeast polysaccharide were the most notable. The lysozyme activity of the epidermal slime was significantly increased by chitosana, yeast polysaccharide, seaweed polysacchafide, and burdock oligosaccharide on day 1 and day 2 after the injection （P〈0.05）. The SOD activity of the coelomic fluid was significantly promoted by the saccharides on day 2 and day 4 post-injection （P〈0.05）, while the SOD activity of the epidermal slime increased on day 2. These findings indicate that chitosan and yeast polysaccharide are the most effective immunostimulants and potential healthy anti-disease feedstuff for A. japonicus.

Efficient Approach for Face Detection in Video Surveillance

Security access control systems and automatic video surveillance systems are becoming increasingly important recently,and detecting human faces is one of the indispensable processes.In this paper,an approach is presented to detect faces in video surveillance.Firstly,both the skin-color and motion components are applied to extract skin-like regions.The skin-color segmentation algorithm is based on the BPNN (back-error-propagation neural network) and the motion component is obtained with frame difference algorithm.Secondly,the image is clustered into separated face candidates by using the region growing technique.Finally,the face candidates are further verified by the rule-based algorithm.Experiment results demonstrate that both the accuracy and processing speed are very promising and the approach can be applied for the practical use.

Reducing Heat-Load in Buildings through the Use of Solar Screens： Case Study of Bookshop House, Lagos

Technology advancement has ensured a better means of livelihood essentially in certain parts of West Africa, specifically Nigeria, where the climate is predominantly hot in most parts throughout the year. Air-conditioning has reduced the harshness of indoor discomforts to the barest minimum. It is no more uncommon to find it regularly in use in most homes and offices. Currently, the economy has the centrality of its power supply hinged on generator plants. The enigma of the current situation is how this alternative problem has catastrophic after effects on the environment. This and many more add up to the greatest of all the threats now evading our environment and the world -- Global warming. The threat of Global warming is real and the need to find less environmentally destructive sources of energy cannot be overemphasized. This paper is a contribution towards energy saving in buildings through the reduction of solar radiation incident on buildings. Sustainable Building calls for an integrated planning approach for operating buildings economically, substantially reducing their impact on the environment by reducing energy/power consumption, amongst others, and enhancing the well-being of their inhabitants. Only buildings that reconcile all of the above factors are fit for the future. A case study of the CMS （Catholic Mission School） Book Shop house in Lagos was carried out. The methodology involved the use of a solar chart and shadow angle protractor to determine the overheated periods represented by the shading masks and data collected. From this analysis, it was decided to accept the use of external sun shading and preliminary designs and specifications were prepared by the architects. The use of external solar screens made a saving of up to 75% of the energy input which would otherwise have been required by air-conditioning.

The Lack of the Frame and Transformations of the Concept of Art

The frame should not only be regarded as an external physical framework of artworks, but also the boundary mark of identifying the art and reality. Within classical space contained by the frame, the values of reason, order, and clarity work to achieve a coherent picture space uniting, through the agency of the frame and the space represented with the space occupied by the beholder. The resistance on ＂frame despotism＂ and ＂dismemberment＂ of picture by avant-garde artist exposes the illusory reality created by perspective and verisimilitude, which deconstructs the false aesthetic relationship of frame and picture. Analysis on frame by modernist art builds its art value

Research on Primary Issues of the Picture Corner

Along with the time esthetic idea change, the new drawing language form appearance has entrusted with picture quoin more significances. Therefore must take the picture quoin, appropriate processing. The picture quoin does not allow in picture position and the function to set otherwise.

The decision-making dimension of the systems approach to management

Theoretically, a system is anything that is made up of various parts. Theses parts are known as subsystems. At every point in time, these parts should work in harmony so that objectives could be achieved successfully. A system could be inanimate or animate item. Examples of inanimate systems include vehicles, households, computer and institution. Examples of animate systems are human being, animal and insect. Both inanimate and animate systems are made up of various subsystems. Such subsystems are required to co-operate, collaborate and work together so that set objectives could be achieved successfully. From practical managerial point of view, business organizations are equally systems that are made up of subsystems which may take the form of departments, sections and/or units. It is supposed to be collaborations among the managers and other members in these departments, sections and/or units so that organizational objectives could be achieved. All the managers in various departments, sections and/or units are required to work together as a team to make the system coherent and closely-knit to make disintegration impossible. Closely related to the systems approach to management is managerial decision-making. Decision-making is a very important function of every manager＇s job. The success and failure stories of many organizations are the result of the quality of decisions made. Many organizations have survived turbulent conditions. Others have also collapsed in spite of favourable conditions. These varying conditions are the result of the quality of decisions made by managers at positions of authority and responsibility. Therefore the systems approach to management enjoins top managers in particular to be very circumspect and cautious in certain decision-making activities. This is because, the quality of decision a manager makes can go a long way to determine the success or failure story of an organization as exemplified in the case study in this paper.

＂Painting with Words＂： ＂Social Justice＂ Protest＇s Narrative in the Israeli＇ s News

This article analyzes the role of the media during the 2011 social protests in Israel, in order to examine why the ＂Social Justice＂ protest proved more effective than any other social protest organized previously in Israel. Scholars have shown that media fi＇aming has a powerful effect on citizen perception and policy debates. The social protests focused on the political-social-economic policy based on a neo-liberal ideology. They signified the beginnings of resistance to the system and became the focus of public and media identification via reports published by leading Israeli newspapers： Yedioth Ahronoth and lsrael Hayom. Using content analysis, the author explore how the media plays an important role to shape the public perception of how to think and act about the protest. Due to the results, we evident the expand media capacity and influence, and that these effects are mediated in presenting positive and supportive coverage, including connotations and metaphors expressed by means of familiar slogans and events in the collective memory of Israeli society. Additionally, the expression ＂social justice＂ that became the protest＇s slogan, offered a broad common basis with which each citizen could identify, including journalists.

竖屏短视频传播热中的冷思考

竖屏短视频因其竖向的构图方式,呈现出和横屏视频不同的传播模式,更加集中的视域及独特的叙事模式,既拓展了竖屏视频的传播空间,也为竖屏短视频用户提供了独特的“画面社交”体验。但同时,竖屏视频传播中的算法逻辑则使传、受双方在“沉浸式传播”中深陷“信息茧房”的桎梏。因此,正确认识竖屏视频的传播特点,与竖屏短视频传播保持理性的距离,是当前竖屏短视频热中应有的冷思考。