Large-Scale Ontology Development and Agricultural Application Based on Knowledge Domain Framework

The key activity to build semantic web is to build ontologies. But today, the theory and methodology of ontology construction is still far from ready. This paper proposed a theoretical framework for massive knowledge management- the knowledge domain framework （KDF）, and introduces an integrated development environment （IDE） named large-scale ontology development environment （LODE）, which implements the proposed theoretical framework. We also compared LODE with other popular ontology development environments in this paper. The practice of using LODE on management and development of agriculture ontologies shows that knowledge domain framework can handle the development activities of large scale ontologies. Application studies based on the described briefly. principle of knowledge domain framework and LODE was

茶叶中农药多残留测定的样品前处理方法综述

综述了茶叶中农药残留检测的样品前处理方法,重点对固相萃取、QuEChERS、基质固相分散萃取、加速溶剂萃取、凝胶渗透色谱、Sin-QuEChERS等样品前处理方法进行归纳,分析了各方法的优点和缺点,为今后开展茶叶中农药多残留的分析研究提供参考。

青海大学生心理资本与心理健康关系研究

旨在考察青海大学生心理资本水平与心理健康状况的关系。采用心理资本量表和自测健康评定量表对989名大学生进行调查研究。结果:大学生心理资本和心理健康均处于中等水平;不同性别、专业大学生在心理资本上差异不显著;不同学校学生心理资本存在显著差异;不同年级、专业的大学生在心理健康总体上存在显著差异;心理资本与心理健康大部分呈极显著正相关,大学生心理资本水平的得分越高,越具备积极的心理能量,其心理健康状况也就越好。建议:高校相关部门应该重视对大学生心理资本的培养,促进和提高青海大学生的心理健康水平。

Removal of the airwave effect by main-part decomposition of the anomalous field of MCSEM data

The airwave effect greatly influences the observational data from controlledsource electromagnetic exploration in shallow seas, which obscures the abnormal effects generated by exploration targets and, hence, affects the accuracy of the late exploration data interpretation. In this study, we propose a method to separate the main part from the anomalous field of marine controlled-source electromagnetic method （MCSEM） data based on Stratton-Chu integral transforms to eliminate the airwave effect, which dominates observed electromagnetic （EM） response in shallow seawater. This method of separating the main part from the anomalous field is a type of finite impulse response filter based on a discrete data set. Theoretical analysis proved that the method is stable and able to effectively depress noise. A numerical test indicated that the method could successfully eliminate the airwave effect from the observed EM signals generated by an air water interface and a seawater layer. This technique is applicable for seawater models with either flat or rough seabeds.

Review on the Work of Agriculture Ontology Research Group

This paper introduces efforts and achievements of Agriculture Ontology Service Research Group of Agricultural Information Institute of Chinese Academy of Agriculture Sciences in last 10 years. It summarizes the research on ontology construction methodology, ontology management system, ontology application and etc.

Study of Ontology-Based Swine Diagnosis Technology

The computer swine disease diagnosis is an important tool for swine farming industry, but the traditional expert system cannot meet the requirement of practical application. To improve the situation, a swine disease ontology is constructed, which can model the knowledge of swine disease diagnosis into a concept system, and a mechanism that can save the ontology into relational database is established, further more a computer system is developed to implement ontology- based swine disease diagnosis, so make the diagnosis results extended and more precise.

Electrical resistivity imaging in Shibaozhai area using magnetotelluric sounding:Enlightenment of hydrocarbon reservoirs on the eastern edge of the Sichuan Basin

Shibaozhai area is located in the northeast Sichuan Basin in Southwest China.In recent years,oil and gas reservoirs with abundant reserves have been discovered in nearby areas.Six magnetotelluric(MT)survey lines were arranged to investigate the deep geoelectrical structures and hidden faults that controlled the hydrocarbon migration along the eastern Kaijiang–Liangping trough and Dachiganjing tectonic belt in this area.The MT sounding data for 181 sites,which covered an area of 15×6 km,were collected.Twodimensional transverse-magnetic-mode inversion of the data revealed four geoelectric layers with a total thickness of approximately 10 km.A low resistivity layer with a thickness of 4 km was discovered in the middle of the exploration area.The combination of faults within the study area revealed a northeast-direction thrust-fault system,which was displaced by northwest-direction faults.The regional geological structures played a significant role in controlling hydrocarbon and gas accumulation.The results of this study could be beneficial in analyzing the geological structure of hydrocarbon reservoirs in this area and can be extended to the exploration of areas in the boundary of a basin.

聚丙烯纤维对高强混凝土流变性能和力学性能的影响

向混凝土中加入聚丙烯纤维(PPF),研究了PPF对混凝土流变性和力学性能的影响。结果表明:随着PPF掺量不断增加,混凝土拌合物的流动性变差。与未加PPF相比,掺入PPF的混凝土在养护7 d和28 d后的抗压强度、劈裂抗拉强度和拉压比均增大。当PPF掺量不超过0.9 kg/m^(3)时,混凝土流变性满足设计要求。PPF掺入量为0.9 kg/m^(3),混凝土在养护7 d和28 d后的抗压强度、劈裂抗拉强度和拉压比达到最大值。