赣饲一号纤毛鹅观草适宜播期的研究

通过分期播种，对赣饲一号纤毛鹅规草的适宜播期进行了研究。结果表明：赣饲一号纤毛鹅现草产草量的最适播期为9月14日，临界播期为11月7日，最迟播期为12月2日；生产种籽的最适播期为10月12日，临界播期为12月2日，最迟播期为1月22日。

短季棉株型栽培技术研究

以短季棉常规整枝株型为对照,分析了不同播期条件下,短季棉多茎株型的生育特点,光合生产率、丰产性及纤维品质。结果表明:多茎株型单株果枝数,不同播期分别为相应对照的2.43倍、1.83倍和2.06倍;单株功能叶片数分别为相应对照的1.85倍、1.82倍和1.93倍,单株成铃分别比相应对照多8.8个、7.8个和6.1个。霜前籽棉产量,3个播期多茎株型分别为相应对照的114.9％、111.5％和113.3％;纤维品质优于对照株型。地上部干物质积累量,3个播期多茎株型分别为对照的148.8％、151.9％和154.8％,叶枝贡献率92.1％～93.8％;吐絮期生殖体干物质积累速率,3个播期多茎株型分别为对照的6.25倍、2.76倍和1.88倍。初步确定一株四茎空心多茎株型是短季棉高产优质栽培的新途径,利于棉田周年高效种植的时间协调和空间优化。

我们的身体在“泛酸”？

最近，被大家叫做“青春活力派”的漂亮女主播斯琴就像换了一个人她时常感到疲乏无力、记忆力下降。起初还以为是工作过劳、用脑过度，可明明睡足了8小时，早上起来还是精神不振、情绪不佳。录节目的时候头痛欲裂。NG了好几回!化妆师也跑来提意见。“注意你的皮肤状况。妆都不好上了!”看到大家不解的目光，斯琴郁闷不已，镜中的自己．的确是皮肤松弛苍白。痘痘突起，还有一点点加深的浅色暗斑……上医院检查，查不出任何病症．医生用“亚健康”的诊断打发了她。直到有一天．采访一位保健专家．她才蓦然得知，原来，自己不知不觉变成了“酸性体质”。

Social Network Information Propagation Model Based on Individual Behavior

In this paper, we discuss building an information dissemination model based on individual behavior. We analyze the individual behavior related to information dissemination and the factors that affect the sharing behavior of individuals, and we define and quantify these factors. We consider these factors as characteristic attributes and use a Bayesian classifier to classify individuals. Considering the forwarding delay characteristics of information dissemination, we present a random time generation method that simulates the delay of information dissemination. Given time and other constraints, a user might not look at all the information that his/her friends published. Therefore, this paper proposes an algorithm to predict information visibility, i.e., it estimates the probability that an individual will see the information. Based on the classification of individual behavior and combined with our random time generation and information visibility prediction method, we propose an information dissemination model based on individual behavior. The model can be used to predict the scale and speed of information propagation. We use data sets from Sina Weibo to validate and analyze the prediction methods of the individual behavior and information dissemination model based on individual behavior. A previously proposedinformation dissemination model provides the foundation for a subsequent study on the evolution of the network and social network analysis. Predicting the scale and speed of information dissemination can also be used for public opinion monitoring.

The experimental of methane-air flame propagation in the tube with quadrate cross section

The flame propagation of methane-air mixture with various methane concen-trations was experimentally investigated at venting flame acceleration tube with quad-rate cross section under different obstacles presented. The flame shape and propaga-tion speed was observed by high-speed color video camera. The explosion pressure was determined by piezoelectricity pressure transducers. The results are: The flame propagates in the shape of a hemisphere before the flame reaches the first baffle and flame propagation speed is not more than 15 m/s. When the flame propagates across the baffle, the flame begins to accelerate due to turbulence induced by obstacle. Blockage ratio has relatively greater effect on the flame propagation speed than re-peated baffle number does. The flame propagation speed and the pressure at different location along the tube are maximum when methane-air mixture is near the chemical stoichoimetric ratio. The pressure increases with the distance from ignition end at first and the maximum pressure was obtained at the middle of tube, but the pressure de-creases and again increases at venting end.

Propagation law of shock waves and gas flow in cross roadway caused by coal and gas outburst

In order to study the propagation law of shock waves and gas flow during coal and gas outburst,we analyzed the formation process of outburst shock waves and gas flow and established the numerical simulation models of the roadways with 45°intersection and 135°intersection to simulate the propagation of outburst gas flow and the process of gas transport.Based on the analysis of the simulation results,we obtained the qualitative and quantitative conclusions on the characteristics and patterns of propagation and attenuation of outburst shock waves and gas flow.With the experimental models,we investigated the outburst shock waves and gas flow in the roadways with the similar structures to the simulated ones.According to the simulation results,when the angle between the driving roadway and the adjacent roadway increased,the sudden pressure variation range in adjacent roadway and the influencing scope of gas flow increased and the sudden pressure variation duration decreased.The intersection between the driving roadway and the adjacent roadway has no effect on airflow reversal induced by the shock waves and gas flow.

Capacity Region of a Class of Gaussian Cognitive Degraded Broadcast Channel

This paper studies the cognitive broadcast channel in which the primary user communicates to the primary receiver, while the secondary user has noncausal knowledge of the primary radio's codeword and expects to communicate to two secondary receivers. Comparing with the existing cognitive radio channel which considers only one secondary receiver, cognitive broadcast channel studies the case that there are multiple secondary receivers.To this end, we investigate the fundamental limits of the performance of the Gaussian cognitive broadcast channel from the information theoretic perspective. Specifically, we derive the capacity region of the Gaussian cognitive degraded broadcast channel with weak interference.

Facebook in the External Communication of High Schools

The study is based on the i^dea of intersection of two current trends： The increasing importance of social networking services on the one hand, and on the other hand, the increase in the high schools＇ need to be successful on the （school） market. Facebook, the most popular social networking service currently, is gradually transforming its form from the leisure and entertainment media towards the more serious media suitable for many traditional types of messages. At the same time, high schools, in addition to traditional forms of reaching out the public, are trying to find and use new forms of communication media, including social networking services. In this study, the author will focus on the current status of the social networking service----Facebook, used as a communication tool of high schools in Slovakia. The presented data are based on exploratory research followed by discursive analysis.

Effect of roadway turnings on gas explosion propagation characteristics in coal mines

In order to reveal the effect of turnings on explosion propagation, experiments were performed in three different pipes （single bend, U-shaped pipe and Z-shaped pipe）. Flame and pressure transducers were used to track the velocity at the explosion front. When the pipes were filled with methane, the explosion strength was significantly enhanced due to the turbulence induced by increasing the number of turnings, while the flame speed （Sf） and peak overpressure （ΔPmax） increased dramatically. In addition, the strength of the explosion increased in violence as a function of the number of turnings. However, when the bend was without methane, the turnings weakened the strength of the explosion compared with the ordinary pipe, shown by the decrease in the values of ΔPmax and Sf. In addition, the propagation characteristics in a U-shaped pipe were similar to those in a Z-shaped pipe and the values of APmax and Sf were also close. The results show that the explosion propagation characteristics largely depend on gas distribution in the pipes and the number of turnings. The different directions of the turnings had no effect.

Modified Wide-angle Beam Propagation Method Using Douglas Operators

A modified wide-angle beam propagation based on the Douglas operators is presented.The truncation error in the modified wide-angle beam propagation is reduced to o (Δ x ) 4 in the transverse direction nearly without any increase of the computation time,whereas the error in the ordinary wide-angle beam propagation method is typically o (Δ x ) 2.With trivial programming changes,the accuracy is higher,especially in wide-angle propagation.

The Problem Related With Community Radio Concept and Restarting of Community Radio in Sri Lanka

Community radio can be considered as an appropriate media of developing the knowledge and attitudes of listeners by clearly identifying their ideas. Community radio services aid to motivate the community participation in communication successfully, as well as to strength the cultural rights of community. It is a current necessity to use community radio services in the process of obtaining successful results through the currently activated developing projects in Sri Lanka. Many countries in the world use this system to succeed their development projects. In this background, there is a necessity to explore the developmental competencies of community radio in Sri Lanka. Community interests for restarting the community radio in Kothmale, Mahaelluppallama and Giradurukotte were identified by the field research. This research proposes a noval format to restarting and continuous implementation of community radio in Sri Lanka, with the factors revealed in the survey. This project is activated under several steps as a collaborative project of Sri Lanka Broadcasting Corporation （SLBC）, the Department of Mass Communication, University of Kelaniya and the community. Proposed community radio will be controlled by a co-administrative system of University of Kelaniya and community. Technical support and frequency will be taken from Sri Lanka Broadcasting Corperation. The content of programs for community radio will be selected by University of Kelaniya and the community. Financial support will be given by the University of Kalaniya for a period of one year. After that, community radio should get the responsibility for its sustainability. Funds will be obtained through various departmental projects, public services, state and non-governmental organization. Those organizations don＇t have a media to implement programs which focuses on rural development. This new radio format could be used for that purpose. This model named as Campus Community Radio （CCR）. It is important to discuss the restarting of community radio services in Sri Lanka, based on the facts such as the incapability of supplying the necessities of listeners in a background of hypermedia. In addition, failure of identifying the developmental expectations of listeners for the radio services in a national level and the usage of community radio services by many countries in the world such as Philippines and India for the success of their rural projects.

Communication, Conviction, and Persuasion in The Origin of Species by Charles Darwin

Charles Darwin discovers that the theory of the species＇ creation by a miraculous being has reached a double impasse, due to the science ＂speech＂ evolution. There is an expositive impasse （it can＇t explain some facts any more） and a communication-comprehensive impasse （within its limits, some facts are not communicable or understandable）. In order to endorse his theory of evolutionism, Darwin develops an argumentative communicating science based on two axes： the facts and the axiomatics. His communicating science follows the next structure： （1） a relation with the starting thesis is established; （2） some evidence are promoted; （3） as the base of the evidence, a motivation is emphasized; （4） as a reason, an axiomatics is assigned to this base; and （5） finally, the facts and the quantifiers are explained by valid conclusions.

Theoretical research on light propagation in W-type single-mode fiber

We give the characteristic equation of a W-type fiber by solving Maxwell's equations along with boundary conditions at the interfaces. The cutoff condition of the fundamental mode is examined,and a novel W-type fiber working in S-band is designed.

Investigation on 1-Heptene/Air Laminar Flame Propagation under Elevated Pressures

The laminar flame propagation of 1-heptene/air mixtures covering equivalence ratios from 0.7 to 1.5 is investigated in a constant-volume cylindrical combustion vessel at 373K and elevated pressures (1, 2, 5, and 10 atm). Laminar flame speed and Markstein length are derived from the recorded schlieren images. A kinetic model of 1-heptene combustion is developed based on our previous kinetic model of 1-hexene. The model is validated against the laminar flame speed data measured in this work and the ignition delay time data in literature. Modeling analyses, such as sensitivity analysis and rate of production analysis, are performed to help understand the high temperature chemistry of 1-heptene under various pressures and its influence on the laminar flame propagation. Furthermore, the laminar flame propagation of 1-heptene/air mixtures is compared with that of n-heptane/air mixtures reported in our previous work. The laminar flame speed values of 1-heptene/air mixtures are observed to be faster than those of n-heptane/air mixtures under most conditions due to the enhanced exothermicity and reactivity.

Experiment study on the propagation laws of gas and coal dust explosion in coal mine

The experiment of gas and coal dust explosion propagation in a single lanewaywas carried out in a large experimental roadway that is nearly the same with actual environmentand geometry conditions.In the experiment,the time when the gas and coal dustexplosion flame reaches test points has a logarithmic function relation with the test pointdistances.The explosion flame propagation velocity rises rapidly in the foreside of the coaldust segment and comes down after that.The length of the flame area is about 2 timesthat of the original coal dust accumulation area.Shock wave pressure comes down to therock bottom in the coal dust segment,then reaches the maximum peak rapidly and comesdown.The theoretical basis of the research and assemble of across or explosion is suppliedby the experiment conclusion.Compared with gas explosion,the force and destructiondegree of gas and coal dust explosion is much larger.

Plurk Politics Micro-Blogging Is Changing Political Communication in Taiwan

The use of social media in political communication has demonstrated its significance by the example of Arab Spring and the 2008 US presidential election, but its role in non-western democratic countries like Taiwan has rarely been examined. Micro-blogs share some characteristics with other types of social media but operate in a lighter way that has made it more and more popular among Internet users. Most researchers focus on the better-known Twitter, however, Plurk has found a niche and becomes the leading type of micro-blog in Taiwan and many politicians enjoy using it for political communication. This study seeks to answer the question ＂What patterns do Taiwan Residents politicians exhibit when utilizing Plurk？＂. By combining Habermasian communicative action theory and Foot and Schneider＇s Web Sphere, this research attempts to form a theoretical framework for micro-blogs. In-depth interviews were conducted with Taiwan Residents politicians at various levels and it was discovered that the broad pattern of political communication via Plurk may be characterised in Habermasian terms as strategic, through information broadcasting, public opinion formation, and political mobilization. In addition, this research shows that Taiwan Residents politicians use Plurk to gather information and ideas in exchanges which have dialogic elements.

Priority Directions of National Policy of Regulation of Mutual Relations Between Youth and Mass Media： The Theoretical and Empirical Researches

The study was concerned with the problem of the Russian youth, with a special emphasis on the history of the theoretical and empirical researches devoted to the youth issues. The research delineates the term thesaurus and its connection with the formation of youth＇s outlook. The central focus of the research is social and cultural value orientations of the young Russian. The study presents a detailed analysis of impact that mass media plays in socialization of youth, its generations, its influence on public opinion formation and priority directions of national policy of regulation of mutual relations between youth and mass media. It attempts to examine the presence of mass media in youth＇s everyday life. The research provides a detailed analysis of contemporary state of the youth＇s trust to the mass media and degree of dependence on it. The study also presents a detailed analysis of the traces of mass media＇s influence on young Russians. The completed research is fundamental for the sociological and the philosophical generalisations that underline comparative research on the youth problems in Russia, its social and cultural value orientations and the influence on public opinion formation and priority directions of national policy of regulation of mutual relations between youth and mass media.

Study on the propagation law of shock wave resulting from coal and gas outburst

According to the formation of shock wave resulting from coal and gas outburst, the gas flow of coal and gas outburst was transformed from an unsteady flow to a steady one based on selected appropriate reference coordinates, and the mathematical expressions were then established by applying mass conservation, momentum conservation equation, and energy conservation equation. On this basis, analyzed gas flow mitigation of variable cross-section area and the outburst intensity, and the relations between cross-section area, velocity, and density; the relations between overpressures and outburst intensity were deduced. Furthermore, shock waves resulting from coal and gas outburst and outburst intensity were measured by experimental setup, the overpressure and outburst intensity of different gas pressures were obtained, and the similar conditions of the experiment were numerically simulated. The averaged overpressure and gas flow velocity of variable cross-section under different gas pressures were numerically derived. The results show that the averaged overpressure and outburst intensity obtained from simulation are in good agreement with the experimental results. Moreover, the gas flow velocity of variable cross-sections approximates to the theoretical analysis.

Under-Winter Sowings of Red Beetroot in Uzbekistan

The results of the three-year researches which had the purpose to establish an optimum depth of seeding at sowing and rational norm of seeding of red beetroot seeds at under-winter sowing in conditions of mid-loamy typical grey soils of the central climatic zone of Uzbekistan are stated in article. The researches were spent at statement of field experiences in quadruple frequency with the area of a registration allotment 10 M^-1. Crops were carried out in the first decade of December against mulching surfaces of ridges by humus and without mulching. Crops were carried out on ridges in width of 70 sm tape-two-lined with distance between tapes of 50 sm, between lines-20 sm and distance between plants in a line of 12-13 sm, at density of standing of 228-230 thousand plants/hectares. Experiences were spent with zoned in Uzbekistan multi-seedling grade of a red beetroot ＂Bordo 237＂. Experiences were accompanied by phenological supervision, biometric accounts, the account of field germination of seeds, density of standing of plants and definition of size and quality of a crop. Results of researches were exposed to the statistical analysis by a dispersive method. It has been revealed that at under-winter sowing of a red beetroot the effective way providing acceleration of shoots occurrence, formations of high-grade density of standing and increase of productivity of root crops is mulching the surfaces of ridges by humus. It is defined that optimum depth of seeding at sowing both at application of mulching and without it is the depth of seeding 4 sm. It is established that the most rational norm of seeding of the seeds, providing high-grade density of standing, is at cultivation with application of mulching 8 kg/ha, and at cultivation without mulching 8-10 kg/ha. Application of mulching the surfaces of ridges by humus, depths of seeding of 4 sm and norms of seeding of seeds of 8-10 kg/ha in conditions of under-winter sowing in comparison with cultivation without mulching and depth of seeding 2 sm and norms of seeding of 6 kg/ha provides an acceleration of receipt of fresh production of a red beetroot for 12-14 days and considerably raises root crops productivity. Application of agro receptions improved by us is the important reserve of acceleration of receipt of red beetroot early production and increase of its manufacture.

Comparison of Wheat Planting Methods and Residue Incorporation Under Saline-Sodic Soil

The present research was conducted to monitor the wheat productivity along with residue incorporation under saline-sodic soils by examining different planting methods at Zaidi Farm, Kakar Gill, Sheikhupura District, Punjab Province in 2007-2008. Randomized Complete Block Design （RCBD） with three replications was used having treatments： control （broadcast）, zero till wheat plantation, wheat plantation using happy seeder and wheat plantation on raised beds. It was observed that tillering was pretty higher （141 and 139 m2） under raised bed as well as happy seeder plantation as compared to zero tilled wheat and broadcast technique. A significant relation was detected among maximum straw and grain yield （4,898 and 1,752 kg-ha1） in raised bed followed by happy seeder planting method. The lowest grain yield was recorded in the broadcast method. Maximum net revenue earned by raised bed planting method （39,908 PKR） followed by happy seeder methodology （37,533 PKR）. The overall study suggests that raised bed and happy seeder wheat plantation are the superior planting methods.