洞察力·研发力·创造力——广电多媒体发展策略

在英国短暂的学习期间,笔者重点听取了英国传媒系统与政策、英国新媒体发展现状、英国著名电视栏目及研发系统的介绍,了解了英国主要广播公司的运营理念、广播公司的新闻价值与娱乐理念、广播电视节目的主要样式等。英国之行令我们深深认识到,做先行者,抢占先机,从而一步领先,步步领先,是英国媒体引领业界,成为世界各地业者纷纷仿效的主要原因,也使他们能够从容应对新媒体环境下的复杂情况。

把题目开发成项目——提升小学生数学研发力的实践探索

在实际教学中,将静态的、单一的例题、习题、试题设计成有趣的、好玩的、有意义的项目,让数学变得简单、好玩、有意思,进而驱动学生主动探索新知、完成项目,是提升学生数学研发力的有效方式。

任务驱动:把学习空间打造成知识的研发中心

任务驱动是一种建立在建构主义教学理论基础上的教学法。要以任务推动学生产生学习的强劲驱动力,教师设计的教学之路必须体现任务的挑战性和长效性。学生在完成任务的过程中需要具备强劲的研发力,即具备强劲的研究能力和研创能力。教师可以设计探究性任务,以提高学生的研究能力;设计创造性任务,来提高学生的研创能力。

针织服装品牌企业版型师能力解读

版型设计是针织服装产业链中最重要的环节之一,它联系着设计与生产,并贯穿着产品生产的整个过程。本文通过分析现阶段我国服装企业版型师的现状,提出随着个性化针织服装设计需求的不断提升,以及针织服装款型和结构的多元化发展趋势,针织服装品牌企业的版型师应具备延续品牌风格、坚持原创设计、把握设备与工艺技术发展趋势、应用高科技手段引导生产、深入研究版型技术,以及感知面料性能的能力,几种能力并存且互相渗透,才能带动企业的科技进步,推进我国针织服装产业的转型和品牌升级。

Absorptive capacity and R&D strategy of labor-managed firms

Taking absorptive capacity effects on research spillovers into consideration, this paper focuses on the R＆D investment decisions and the output decisions of labor-managed firms. Based on the general model of the cost-reducing R＆D, the strategic interactions of output and R＆D investment between labor-managed firms in a duopoly are analyzed. Moreover, the impact of absorptive capacity effects on optimal output in the production stage is discussed. In the R＆D stage, the impacts of absorptive capacity effects on the equilibrium R＆D investment in cooperative and non-cooperative R＆D are analyzed. Finally, the R＆D strategy of labor-managed firms is compared with the behavior of profit-maximizing firms. The results show that equilibrium R＆D investment is always higher than that in the exogenous spillover rate, which is similar to the behavior of the profit-maximizing firms. However, unlike the profit-maximizing firms, the impact of the absorptive capacity that affects the relationship between the optimal output and its own（rival＇ s）R＆D is shown to be dependent upon a return-to-scale of the production.

企业转型发展中工商管理部门的应用分析

基于企业转型发展背景,分析工商管理部门的应用价值,提出实现工商管理部门价值的方法,共享给相关人员参考借鉴。管理实践中积极引入管理新技术与新方法,提升企业的生产力与研发力,能够推动企业经济持续化发展。若想实现工商管理的价值,要做好内部管理模式的调整,加强工商管理队伍的建设,不断提高工商管理的水平,创造更多的价值。

盛夏再燃一把火 《战火：红色警戒》非凡体验

自原创即时战略网游《战火:红色警戒》内测以来,全新的版本和更加成熟便捷的操作给玩家们带来了不同于一般网络游戏的快乐体验。然而,随着内测时间的不断延伸,游戏中也不断的涌现出许多的高级玩家。众所周知,中国玩家群体中有不少出了名的练级狂人,这些狂人的练级速度根本不是常人所能比拟。当大部分玩家才仅仅20级的时候,50级以上的高手已经层出不穷。随着玩家等级阶层分化的加剧,在游戏中所出现的一系列事件已经证明,当前的《战火:红色警戒》

Numerical Investigations on the Aerodynamic Performance of Wind Turbine： Downwind Versus Upwind Configuration

Although the upwind configuration is more popular in the field of wind energy, the downwind one is a promising type for the offshore wind energy due to its special advantages. Different configurations have different aerodynamic performance and it is important to predict the performance of both downwind and upwind configurations accurately for designing and developing more reliable wind turbines. In this paper, a numerical investigation on the aerodynamic performance of National Renewable Energy Laboratory （NREL） phase V1 wind turbine in downwind and upwind configurations is presented. The open source toolbox OpenFOAM coupled with arbitrary mesh interface （AMI） method is applied to tackle rotating problems of wind turbines. Two 3D numerical models of NREL phase VI wind turbine with downwind and upwind configurations under four typical working conditions of incoming wind velocities are set up for the study of different unsteady characteristics of the downwind and upwind configurations, respectively. Numerical results of wake vortex structure, time histories of thrust, pressure distribution on the blade and limiting streamlines which can be used to identify points of separation in a 3D flow are presented. It can be concluded that thrust reduction due to blade-tower interaction is small for upwind wind turbines but relatively large for downwind wind turbines and attention should be paid to the vibration at a certain frequency induced by the cyclic reduction for both configurations. The results and conclusions are helpful to analyze the different aerodynamic performance of wind turbines between downwind and upwind configurations, providing useful references for practical design of wind turbine.

Characteristics and Research Status quo of Chenopodium quinoa Willd.

The research reviewed biological characters and nutritional value of Chenopodium quinoa and concluded status quo of domestic cultivation and problems at promotion, as wel as application prospect in order to provide references for re-search and development of Chenopodium quinoa.

Calculation model and mechanism analysis for rain-wind-induced vibration of stay cable

Rain-wind-induced vibration of cable was studied based on previous research achievements. According to the quasi-steady assumption, the governing equation of vertical motion of the cable was derived and the criterion for unstable motion and occurrence mechanism was studied. A comparison was performed between the oscillation responses of the stay cable obtained from calculated model and previous results. The results indicate that the analysis model can reflect the main characteristics of wind-rain-induced vibrationt of the cable which is amplitude- and velocity-restricted, and it is probably related with the periodic vortex shedding of wake flow. It is essential for the occurrence of rain-wind-induced or wind-induced vibration of cable that the derivative of lift coefficient with respect to transient angle of attack is less than zero. When rain-wind-induced vibration occurs, the aerodynamic force has a dual function for the vibration, and the maximum amplitude of stayed-cable is determined by the relative value of aerodynamic exciting force and aerodynamic damping force.

An Experimental Study on the Drag Property of High-Temperature Particles Falling into Cold Liquid Pool

This experiment is to study the special resistant induced by the high-speed evaporation surrounding themoving high-temperature particles. An observable equipment was designed, in which the first 11 experiments wereperformed by pouring one or several Zirconia spheres with various high-temperature and a diameter of 3～ 10 mminto a water pool. The particles falling-down speeds were recorded by high-speed photographic instrumentation,and pressures and water temperatures were measured. A comparison between the experiments with cold and hotspheres respectively, employing three different sphere types each, was presented. The experimental data, com-pared with the theory of the evaporation drag model, are nearly identical.

Key technologies and equipment for a fully mechanized top-coal caving operation with a large mining height at ultra-thick coal seams

Thick and ultra-thick coal seams are main coal seams for high production rate and high efficiency in Chinese coal mines, which accounts for 44 % of the total minable coal reserve. A fully mechanized top-coal caving mining method is a main underground coal extraction method for ultra-thick coal seams. The coal extraction technologies for coal seams less than 14 m thick were extensively used in China. However, for coal seams with thickness greater than 14 m, there have been no reported cases in the world for underground mechanical extraction with safe performance, high efficiency and high coal recovery ratio. To deal with this case, China Coal Technology ＆ Engineering Group, Datong Coal Mine Group, and other 15 organizations in China launched a fundamental and big project to develop coal mining technologies and equipment for coal seams with thicknesses greater than 14 m. After the completion of the project, a coal extraction method was developed for top-coal caving with a large mining height, as well as a ground control theory for ultra-thick coal seams. In addition, the mining technology for top-coal caving with a large mining height, the ground support technology for roadway in coal seams with a large cross-section, and the prevention and control technology for gas and fire hazards were developed and applied. Furthermore, a hydraulic support with a mining height of 5.2 m, a shearer with high reliability, and auxiliary equipment were developed and manufactured. Practical implication on the technologies and equipment developed was successfully completed at the No. 8105 coal face in the Tashan coal mine, Datong, China. The major achievements of the project are summarized as follows： 1. A top-coal caving method for ultra-thick coal seams is proposed with a cutting height of 5 m and a top-coal caving height of 15 m. A structural mechanical model of overlying strata called cantilever beam-articulated rock beam is established. Based on the model, the load resistance of the hydraulic support with a large mining height for top-coal caving method is determined. With the analysis, the movement characteristics of the top coal and above strata are evaluated during top-coal caving operation at the coal face with a large mining height. Furthermore, there is successful development of comprehensive technologies for preventing and controlling spalling of the coal wall, and the top-coal caving technology with high efficiency and high recovery at the top-coal caving face with a large mining height. This means that the technologies developed have overcome the difficulties in strata control, top-coal caving with high efficiency and high coal recovery, and enabled to achieve a production rate of more than 10 Mtpa at a single top-coal caving face with a large mining height in ultra-thick coal seams; 2. A hydraulic support with 5.2 m supporting height and anti-rockburst capacity, a shearer with high reliability, a scraper conveyor with a large power at the back of face, and a large load and long distance headgate belt conveyor have been successfully developed for a top-coal caving face with large mining height. The study has developed the key technologies for improving the reliability of equipment at the coal face and has overcome the challenges in equipping the top-coal caving face with a large mining height in ultra-thick coal seams; 3. The deformation characteristics of a large cross-section roadway in ultra-thick coal seams are discovered. Based on the findings above, a series of bolt materials with a high yielding strength of 500-830 MPa and a high extension ratio, and cable bolt material with a 1 × 19 structure, large tonnage and high extension ratio are developed. In addition, in order to achieve a safe roadway and a fast face advance, installation equipment for high pre-tension bolt is developed to solve the problems with the support of roadway in coal seams for top-coal caving operation with a large mining height; 4. The characteristics of gas distribution and uneven emission at top-coal caving face with large mining height in ultra-thick coal seams are evaluated. With the application of the technologies of gas drainage in the roof, the difficulties in gas control for high intensive top-coal caving mining operations, known as ＂low gas content, high gas emission＂, are solved. In addition, large flow-rate underground mobile equipment for making nitrogen are developed to solve the problems with fire prevention and safe mining at a top-coal caving face with large mining height and production rate of more than 10 Mtpa. A case study to apply the developed technologies has been conducted at the No. 8105 face, the Tashan coal mine in Datong, China. The case study demonstrates that the three units of equipment, i.e., the support, shearer and scraper conveyor, are rationally equipped. Average equipment usage at the coal face is 92.1%. The coal recovery ratio at the coal face is up to 88.9 %. In 2011, the coal production at the No. 8105 face reached 10.849 Mtpa, exceeding the target of 10 Mtpa for a topcoal caving operation with large mining height performed by Chinese-made mining equipment. The technologies and equipment developed provide a way for extracting ultra-thick coal seams. Currently, the technologies and equipment are used in 13 mining areas in China including Datong, Pingshuo, Shendong and Xinjiang. With the exploitation of coal resources in Western China, there is great potential for the application of the technologies and equipment developed.

Application of external gear pump in water-hydraulic system

The ceramic coating technology of microarc oxidation (MAO) was utilized to modify surface properties of the movable endplate of a high pressure gear pump used in water-hydraulic system, which is made of aluminium alloy. A coMPact ceramic layer of more than 130 μm was developed on the movable endplate with the hardness up to HV1000 by means of microarc oxidation. A trial of tests conducted in a water power transmission system show that the maximum outlet pressure of the gear pump with the movable endplate treated by microarc oxidation, can reach 16 MPa. It is pointed out that the ceramic coating developed by microarc oxidation technology on the surface of aluminium alloy, is economical and feasible.

Social Networks Among Migrants in Saudi Arabia （SA）： Opportunities and Implications

This paper presents results of a pilot research conducted among social networks of both Sudanese and Egyptians in Jeddah city, Saudi Arabia （SA）. The main objectives of the research are focused into four interrelated issues： （1） to analyse the structural-function of the social networks of Sudanese and Egyptian migrants; （2） to explain the opportunities and challenges confronting the social networks; （3） to examine the elements of implications on SA society as perceived by the networks; and （4） to identify perceived future visions of the social network members in the context of their social and economic remittances in both countries. The research has applied a qualitative method and a structured interview sheet was used for data collection. The Sudanese sample focused on members from a Nubian social network in ]eddah who resemble skilled, semi-skilled, and unskilled labours, while the Egyptian sample selected randomly from semi-skilled youth labours and unskilled labours as informal groups. The research has found some differences in the structural functions of both groups. There are many similarities shared between the two groups in relation to conserving social ties, support and cooperation as one homogeneous socio-ethnic groups in the hosting country. Also, the results show that both groups follow similar strategies of social and economic remittances to home land. Moreover, both groups are suffering and facing many shared challenges regarding economic security and sustainability in the hosting country. While, the Sudanese group has clear vision in respect of the betterment of the migrants in SA, the Egyptian group perceives the future as gloomy and uncertain.

Evaluating and Measuring Relational Capital by Defining Knowledge

As we are in the knowledge economy, the main purpose of this research is to define the value of relational capital by measuring it with an innovative model. To this end, this paper will explain the meaning of intellectual capital （human capital, structural capital, and relational capital） in the field of knowledge economy and what relational capital is and how we can measure its value. The research is qualitative in nature and was developed through the study of the international literature. The research presents some theoretical evidences that permit defining a method for the evaluation of relational capital. In this direction, the above method will need to have some integration in the future research. Moreover, this approach should consider some empirical evidences to establish the practical value of the method. In fact, the method presented encourages debate and a critical attitude towards the evaluations of relational capital and intellectual capital.

Electricity Sector Transitions in an after War Country： A Review of Afghanistan＇s Electricity

Afghanistan electricity sector has experienced many ups and downs of transitions from 1893 to date. With the growing global interest in Afghanistan rehabilitation, this paper presents an over view of Afghanistan electricity sector which includes the historical development trends, power generation potential, sustainable energy exploitation, electricity policy transition and immature policies experiences, and the legacy of the war. The lack of access to the basic information about Afghanistan power sector was one of the serious concerns of international donors and investors. Still, this information somehow has been kept in official documents wrap up. In this collection, the Afghanistan＇s electricity sector is pictured as a reference for Afghanistan electricity. It can be opening toward primary sources of Afghanistan electricity sector of the lessons learned and asset for researchers interesting in this topic.

IPT＇s Quick ＆ Dirty Economic Valuation Method： An Empirical Test on Three Cases

The assessment of economic potential of technological innovation projects and its valuation are key aspects in negotiations among universities, research institutes, and companies. Among the reasons for this, it can be quoted portfolio prioritization, which involves several different economic, social, and environmental impacts aspects and industrial productivity. The standard of economic potential is an important reference in the project selection process. For technology transfer, the valuation of technologies consists in a relevant task to support intellectual property （IP） negotiations. However, in dynamic environments, negotiations for the commercial exploitation and payment of IP resulting from research projects require quick answers, due to several aspects like tight deadlines to sign contracts. Moreover, technology valuation is one of the most complex activities related to the technology transfer. Due to these challenges faced by Instituto de Pesquisas Tecnol6gicas do Estado de S~,o Paulo （IPT--Institute For Technological Research） in its participation in Brazilian Association of Industrial Innovation （EMBRAPII, acronym in Brazilian Portuguese）, authors developed an expedite technology valuation method, based on concepts of discounted cash flow （DCF） associated with Gompertz curve adaptations as a way to support universities and research institutes in negotiations with enterprises. This method has been regularly applied on negotiations between 1PT and companies. This paper will present cases of metallurgical companies. The results obtained confirm the validity of the method in supporting the definition of the payable amounts for commercial exploitation of technologies, enabling the application of this method as an alternative to some methods found in the literature and eventually employed by universities and research institutes in Brazil. For future research, authors recommend comparative studies between Gompertz curve and other methods, such as the Pearl curve, using the same variables of our method.

Intercultural Communication Competence Developed by Chinese in Communicating With Malays in Bangka Island, Indonesia

This study aims to explore the cultural identity of Chinese related to their self-perception, their perception of Malays, and their communication with the Malays in Bangka Island, Indonesia, emphasizing the Chinese intercultural communication competence in terms of their self-presentation in business relationships with the Malays. The study employed an interpretive approach, more specifically the symbolic interactionlst and dramaturgical tradition. The researchers focused on intercultural communication experiences and competence as enacted by the 25 Chinese in the area of the research. The study used in-depth interviews with the Chinese as the main method with some observation of the Chinese communication with the Malays. The researchers also interviewed eight Malays as additional subjects of the research to corroborate the research findings. The study found that the Chinese in Bangka Island perceived themselves as open and willing to mingle with the Malays They are hospitable, hardworking, tenacious, frugal, and fond of maintaining long-term relationships. In contrast, in the Chinese view, the Malays are open and willing to mingle with others, obedient to the teachings of Islam, but they are lazy and are keen on being flattered, consumptive, and easily seduced. In terms of their intercultural communication competence, the Chinese are skillful in their self-presentation by employing various verbal and nonverbal tactics to adjust themselves to the interpersonal, group, and business situations where they encounter the Malays in their everyday lives

Effects of Sex Differences and Problem-Solving Strategies on Digital Game Performance

Problem-solving strategy i,,; a critical skill in inquiry-based learning. Several studies have investigated how to use learning games to improve inquiry abilities. However, not every learner favors this kind of approach. Thus, we need to examine how human factors affect learners＇ reactions to the use of a digital game to support inquiry-based learning. This study addressed this issue by developing a digital game, ＂Baking Town＂, and using the game to examine the effects of two central human factors, sex differences and problem-solving strategies, on students＇ performance. The results demonstrate that students＇ inquiry abilities were significantly improved after they participated in the digital game. The results also demonstrate that the digital game may be a feasible way to reduce differences between boys and girls in this domain. Finally, we used the findings to develop a framework that can be used to enhance our understanding of sex differences and the use of problem-solving strategies in the context of digital games.

Numerical Study of Thermoelectric Generation within a Reciprocal Flow Porous Media Burner

A numerical study based on direct thermal to electric energy conversion was performed in a reciprocal flow porous media burner embedded with two layers of thermoelements. The burner lean combustibility limit was sought in order to maximize global efficiency of thermal to electrical energy conversion by minimizing fuel consumption. Once the pairs of operational variables, composition and filtrational velocity of gas inlet mixture were found, the optimal length and placement of thermoelectric elements within the reactor high thermal gradients were sought to maximize the electric current, thermoelements and system overall efficiency. A two temperature-resistance model for finite time thermodynamics was developed for the thermoelectric elements energy fluxes. Results indicate a distribution of current and efficiencies that presents a maximum at different themoelements length. Maximum values for current and system efficiency obtained were 44.3 m A and 2.5%, respectively.