Edge correction of point pattern analysis'function and its application on spatial pattern analysis of insect population

The insect populations in the fields of insect-resistant transgenic Bt cotton(BT) and in the fields of conventional non-transgenic cotton(CV) in the coastal agricultural region of Jiangsu Province were surveyed and systematically compared in the year of 2004—2005.

This paper reviews the research methods of spatial pattern of insect population based on the analysis of four main entries of the research methods, which are probability model, dispersion indices, regression model and geostatistical model.

Development Status of Environmental Protection Industry in China--Result analysis on sampling investigation of environmental protection industry in 2003;

Earthquake damage prediction and countermeasures against earthquake disasters based on sampling investigation for village housing of Anhui Province,China

The sampling investigation was conducted during 20 th to 23 th,February 2005.

The further study of some important problems of sampling survey;

The construction of the course and the reform of educating on thd sampling survey;

Sampling survey of hearing disability in Jilin Province;

Through the sample survey on the outside reading of the university students, this paper introduces the reading situation of the current university students, considers the problems existing currently in the outside reading of university students, and puts forward some ideas of improving the work for the readers.

Sample survey is an important way to find statistics;the problem of sample survey by dividing layer is domain estimation in fact.

The application of sample survey method in history research is analyzed.