Growth of meromorphic solutions of higher-order linear differential equations

In this paper, we investigate the higher-order linear differential equations with meromorphic coefficients. We improve and extend a result of M.S. Liu and C.L. Yuan, by using the estimates for the logarithmic derivative of a transcendental meromorphic function due to Gundersen, and the extended Winman-Valiron theory which proved by J. Wang and H.X. Yi. In addition, we also consider the nonhomogeneous linear differential equations

New Evidence from Sequential ADF Tests

There has been mixed evidence regarding the existence of rational bubbles in the foreign exchange markets. This paper introduces recently developed sequential unit root tests into the analysis of exchange rates bubbles. We find strong evidence of explosive behavior in the nominal Sterling-dollar exchange rate. However, this explosive behavior should not be simply interpreted as evidence of rational bubbles, as we show that it might be driven by the relative prices of traded goods

Adaptive networking control method and application of 5G vehicle networking node

at present, with the development of information technology, 5G network has been born, which also makes the Internet of things and the Internet based on the network develop rapidly. In this context, vehicular ad hoc network technology has attracted much attention. This technology has promoted the development of intelligent transportation from the research, birth and application in practice, so that intelligent transportation has been supported at the technical level, and its intelligent system has been optimized. In addition, vehicular ad hoc network technology plays a key role and value in road rescue, driverless and remote dispatching management. Therefore, this paper not only strengthens the greedy traffi c aware routing, but also optimizes the problems existing in its operation, and puts forward improved methods for the reference of the industry

Research on the cultivation and strategy of innovative high skilled talents in Higher Vocational Colleges

at this stage, China’s economic structure is in an important period of strategic transformation, and the development of higher vocational colleges has also ushered in an important period of opportunity. With the development of social economy, higher vocational colleges are more competitive in talent orientation, professional construction, and the establishment of innovative teacher teams. The fi rst is that the requirements of social and economic development for highly skilled and innovative talents are increasing. The second is that higher vocational colleges themselves are also facing great challenges of adjustment. How to face these challenges, improve the level and quality of talent training, and achieve sustainable development is an arduous task. We must vigorously reform vocational education, focus on cultivating innovative high skilled talents, and meet the needs of economic development for the transformation and upgrading of higher vocational education

Impacts of Climate Conditions and Adaptations on Agricultural Output and Household Income in Inner Mongolia, China

Climate change has imposed significant challenges on global dryland systems. In this dissertation, Inner Mongolia, a typical dryland system in the world’s largest developing county, China, was selected as an example to study the relationships between rural agricultural production/income generation, climate factors and adaptive activities in the dryland system. Two respective multiple regression models on grain and livestock production were built with secondary panel data in Inner Mongolia from 2000 to 2008. The research results indicate that temperature and precipitation changes, technical assistance, agricultural diversification and highway density had significant impacts on local agricultural production, though the significance level and direction of the impacts of these variables differed between grain production and livestock production. For adaptation strategies, while the grain production sector might have to act against both the higher temperature and decreased precipitation, the livestock production sector could mainly focus on adapting to the drier weather. But adaptive activities such as irrigation infrastructure building, adoption of water saving technologies, and improvement of technical personnel would serve both the sectors well through increased adaptive capacity. A multinomial logistic regression model on rural household income was also built with primary survey data collected in 2010 in Xilin Gol, a typical rural setting in Inner Mongolia. The research results also indicated that land degradation hurt the poorest household groups most and that conservation programs benefited the same groups the most significantly with respect to household income. In addition, diversification of income sources contribute significantly to the income increase of the poorest and middle-level income level households, market access contribute significantly to the income increase of all but the highest two income level households, and high-value agriculture significantly contributed to income increase for the farmer households. Therefore, land conservation programs, high-value agriculture, diversification of income sources, and market access should be given top priorities in policy making in order to increase rural income

Example Based Caricature Synthesis

The likeness of a caricature to the original face image is an essential and often overlooked part of caricature production. In this paper we present an example based caricature synthesis technique, consisting of shape exaggeration, relationship exaggeration, and optimization for likeness. Rather than relying on a large training set of caricature face pairs, our shape exaggeration step is based on only one or a small number of examples of facial features. The relationship exaggeration step introduces two definitions which facilitate global facial feature synthesis. The first is the T-Shape rule, which describes the relative relationship between the facial elements in an intuitive manner. The second is the so called proportions, which characterizes the facial features in a proportion form. Finally we introduce a similarity metric as the likeness metric based on the Modified Hausdorff Distance (MHD) which allows us to optimize the configuration of facial elements, maximizing likeness while satisfying a number of constraints. The effectiveness of our algorithm is demonstrated with experimental results

Study on creep mechanism of coral sand based on particle breakage evolution law

The time-dependent deformation property of backfill coral sand is of great important to the long-term stability of engineer facilities bulit on reefs and reclaimed land. In order to investigate the long-term deformation behavior, one-dimensional compression creep tests under different constant stresses were carried out for coral sand taken from a reef in the South China Sea by WG type high-pressure consolidation instrument. The test results show that under the action of constant stress, coral sand has a strong deformation timeliness and shows remarkable nonlinear attenuation creep characteristics. The creep of coral sand has obvious stages and has gone through three stages of instantaneous deformation, accelerated deformation and slow deformation phase tending to stability. The relationship of strain-time can be fitted with power function in mathematic. The particle breakage state of any single particle size group of coral sand after creep can be well described by using the two-parameter Weibull distribution function, Weibull parameters a and b have a good exponential relationship with stress, and have a negative linear relation with quantitative index Br of particle breakage, and have a negatively correlated with final total strain. Under the action of low stress level, the main cause of creep deformation is the movement and recombination of particles. At low stress level, the movement and recombination of particles are the main reason of creep deformation, while at high stress level, the slippage and filling pores of broken coral sand particles are the main reason of creep deformation

Combining a Fuzzy Matter-Element Model with a Geographic Information System in Eco-Environmental Sensitivity and Distribution of Land Use Planning

Sustainable ecological and environmental development is the basis of regional development. The sensitivity classification of the ecological environment is the premise of its spatial distribution for land use planning. In this paper, a fuzzy matter-element model and factor-overlay method were employed to analyze the ecological sensitivity in Yicheng City. Four ecological indicators, including soil condition,, water condition,, atmospheric conditions and biodiversity were used to classify the ecological sensitivity. The results were categorized into five ranks: insensitive, slightly sensitive, moderately sensitive, highly sensitive and extremely sensitive zones. The spatial distribution map of environmental sensitivity for land use planning was obtained using GIS (Geographical Information System) techniques. The results illustrated that the extremely sensitive and highly sensitive areas accounted for 14.40% and 30.12% of the total area, respectively, while the moderately sensitive and slightly sensitive areas are 25.99% and 29.49%, respectively. The results provide the theoretical foundation for land use planning by categorizing all kinds of land types in Yicheng City

A Novel Preparation Method for 5-Aminosalicylic Acid Loaded Eudragit S100 Nanoparticles

In this study, solution enhanced dispersion by supercritical fluids (SEDS) technique was applied for the preparation of 5-aminosalicylic acid (5-ASA) loaded Eudragit S100 (EU S100) nanoparticles. The effects of various process variables including pressure, temperature, 5-ASA concentration and solution flow rate on morphology, particle size, 5-ASA loading and entrapment efficiency of nanoparticles were investigated. Under the appropriate conditions, drug-loaded nanoparticles exhibited a spherical shape and small particle size with narrow particle size distribution. In addition, the nanoparticles prepared were characterized by X-ray diffraction, Differential scanning calorimetry and Fourier transform infrared spectroscopy analyses. The results showed that 5-ASA was imbedded into EU S100 in an amorphous state after SEDS processing and the SEDS process did not induce degradation of 5-ASA