Based on the monthly meteorological data collected from Kunming weather stations in recent 26 years, the change characteristics of annual and inter-annual precipitation and temperature are analysized by linearity tren...
详细信息
ISBN:
(纸本)9783642255373
Based on the monthly meteorological data collected from Kunming weather stations in recent 26 years, the change characteristics of annual and inter-annual precipitation and temperature are analysized by linearity trend estimation;the change characteristics of precipitation and temperature are given a phased analysis by analyzing annual temperature ***-Kendall technique is applied to detect the change trend of precipitation and temperature. The result demonstrates that: the precipitation shows an increasing but not obvious trend;the mean temperature shows a clear increase trend. The interannual precipitation and mean temperature is high in the middle and low at the two ends, which shows an obvious seasonal distribution. The result of MannKendall trend test shows: the change trends of precipitation of different seasons are not in accordance with the trend of the whole year, and there is a obvious increase in spring winter and the whole year and obvious decrease in fall;the change trends of mean temperature in different season are in accordance with that of the whole year, and all these periods have obvious increase trends.
It is important to study on environmental monitoring and control of greenhouse and improve agriculture *** mathematics model of environment temperature is established based on the fuzzy control theory which deals with...
详细信息
ISBN:
(纸本)9783642251870
It is important to study on environmental monitoring and control of greenhouse and improve agriculture *** mathematics model of environment temperature is established based on the fuzzy control theory which deals with the problems of traditional greenhouse,such as outdated management,high cost,low-level,*** system detects the environment parameters based on PCI-DAQ data acquisition system,and adjusts the air blower rotate speed by frequency *** is used to run in real environment,the original environment temperature is 30℃,the given value is 27℃,and the range is within ±0.5℃.The system controls the temperature parameter real-timely based on fuzzy control *** with the traditional PID control system,it can increase the stability of system,avoid the subjectivity and random of manual operation,and improve precision and efficiency of the whole *** system has high practical value and using prospect since it meets the request of scientific producing and automatic management of greenhouse.
This paper introduces some basic parameter models and methods of simulation of array signal *** deal with these different models and various algorithm,MATLAB offers great instructions and functions;which make the simu...
详细信息
ISBN:
(纸本)9783642251870
This paper introduces some basic parameter models and methods of simulation of array signal *** deal with these different models and various algorithm,MATLAB offers great instructions and functions;which make the simulation considerable *** key programs were proposed,which could simulate complex and real valued covariance matrix estimation,estimate the DOA(direction of arrival) of impinging signal by subspace algorithm,such as MUSIC,Root-MUSIC,Unitary *** examples show the detail procedure and programs are useful to the array signal processing ***,these methods take an important function to many other complicated simulations.
As scientific literacy becomes an important goal in education nowadays. Inquiry-based teaching has also become more and more important method in education process. In this article we analysis the nature and character ...
详细信息
ISBN:
(纸本)9783642247712
As scientific literacy becomes an important goal in education nowadays. Inquiry-based teaching has also become more and more important method in education process. In this article we analysis the nature and character of inquiry-based teaching method, then we compare the characteristics of inquiry-based teaching to traditional teaching method, after these, we further explain inquiry-based teaching from the view of constructivism theory. At last, the paper proposed a few suggestions for education in China.
This paper comes up with a method of traveling wave signal noise reduction based on wavelet coefficients, after exploring the theory of wavelet noise reduction. Then it analyses a threshold value estimation method and...
详细信息
ISBN:
(纸本)9783642255373
This paper comes up with a method of traveling wave signal noise reduction based on wavelet coefficients, after exploring the theory of wavelet noise reduction. Then it analyses a threshold value estimation method and puts forward an average estimation method by compromising algorithm between soft-threshold and hard-threshold. A large amount of emulator study indicates that the adoption of traveling wave signal noise reduction can increase the rate of signal and noise and the signal strangeness can be well maintained, providing a theoretical guide for achieving power line fault detection.
In this paper,Landsat ETM+ image of Huainan city in Anhui were classified with a decision tree,which was established based on the analysis of the spectrum characteristics,the texture characteristics and other auxiliar...
详细信息
ISBN:
(纸本)9783642251870
In this paper,Landsat ETM+ image of Huainan city in Anhui were classified with a decision tree,which was established based on the analysis of the spectrum characteristics,the texture characteristics and other auxiliary information,such as NDVI,NDBI and topography *** the author compared decision tree classification technology with maximum likelihood classification *** result indicated that the accuracy of decision tree classification was 4.06%higher than that of the maximum likelihood classification and Kappa coefficient was increased by 5.61%.These show that decision tree classification technology is flexible and can improve the classification accuracy efficiently.
By analyzing the typical business of graduation design management platform, which including these work of choosing a topic, starting a topic, paper and concluding a topic, four working platforms based on J2 EE were re...
详细信息
ISBN:
(纸本)9783642255373
By analyzing the typical business of graduation design management platform, which including these work of choosing a topic, starting a topic, paper and concluding a topic, four working platforms based on J2 EE were realized using the development technology of syncretizing struts2, Spring and Hibernate. This four working platforms contain: student work platform, instructor working platform, evaluation expert working platform and system administrator working platform. And because of these functions platform, a convenient and effective platform provided for the graduation design management.
Chinese enterprises began with a weak foundation in the intense world trade environment, similar to many other enterprises that grew from developing countries. How were Chinese enterprises able to compete with foreign...
详细信息
ISBN:
(纸本)9783642255373
Chinese enterprises began with a weak foundation in the intense world trade environment, similar to many other enterprises that grew from developing countries. How were Chinese enterprises able to compete with foreign competitors armed with strong capital structures and efficient communication networks? Haier is an excellent example of how Chinese enterprises, especially Chinese traditional enterprises have successfully adapted to and prospered in the global economy, using advanced management model and information technology as strategic weapons to achieve Internet Transformation and meet its competitive objectives. Haier' growth is miraculous: in only two decades, it grew from a stateowned refrigerator factory into an international giant. What are the secrets of Haier's success? In this paper, I focus on e-business, which is one of the most important impetuses behind Haier's success, analyze Haier's e-business experience and draw some conclusions finally.
Faculty is undoubtedly a key factor in the success of vocational education. The experience of faculty building for vocational education in developed countries enlightens the faculty building for vocational colleges in...
详细信息
ISBN:
(纸本)9783642247712
Faculty is undoubtedly a key factor in the success of vocational education. The experience of faculty building for vocational education in developed countries enlightens the faculty building for vocational colleges in our country. Learning from their experience, training and hiring vocational teachers in various ways, improving faculty structure, making strict management of per-hiring qualification, and strengthening post-hiring professional training will be important ways to improve the level of vocational faculty in our country.
This paper proposed a practical and small-scale model for developing Location-Based Services(LBS) applications,which based on J2 EE and SQL *** focuses were the Data tier deisgn of the architecture for small-scale LBS...
详细信息
ISBN:
(纸本)9783642251870
This paper proposed a practical and small-scale model for developing Location-Based Services(LBS) applications,which based on J2 EE and SQL *** focuses were the Data tier deisgn of the architecture for small-scale LBS applications,including the spatial database design on top of SQL Server,storage mechanisms and the implementation of an improved GSQL parser The figures displays the realization of SQL Server based spatial database ***,concludes with some practical value proposition and wide application prospects of this small-scale LBS application model.
暂无评论