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Field analysis of metallogenic information and its application 被引量:3
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作者 毛先成 胡超 +3 位作者 周尚国 张宝一 汪凡云 曾文波 《Journal of Central South University》 SCIE EI CAS 2011年第1期196-207,共12页
Focusing on the issue to deal with inadequate extraction of metallogenic information especially geological information,a new method of extracting metallogenic information based on field model,i.e.the field analysis me... Focusing on the issue to deal with inadequate extraction of metallogenic information especially geological information,a new method of extracting metallogenic information based on field model,i.e.the field analysis method of metallogenic information,was proposed.In addition,a case study by using the method of the extraction of metallogenic information from the west Guangxi and southeast Yunnan district as an example was performed.The representation method for the field models of metallogenic information,including the metallogenic influence field model and the metallogenic distance field model,was discussed by introducing the concept of the field theory,based on the characteristic analysis of the distance gradualness and the influence superposition of metallogenic information.According to the field theory superposition principle and the spatial distance analysis method,the mathematical models for the metallogenic influence field and the metallogenic distance field of point,line and area geological bodies were derived out by using parameter equation and calculus.Based on the metallogenic background analysis,the metallogenic information field models of synsedimentary faults and manganese sedimentary basins were built.The relationship between the metallogenic information fields and the manganese mineralization distribution was also investigated by using the method of metallogenic information field analysis.The instance study indicates that the proposed method of metallogenic information field analysis is valid and useful for extracting the ore-controlling information of synsedimentary faults and manganese sedimentary basins in the study area,with which the extraction results are significant both statistically and geologically. 展开更多
关键词 metallogenic information field model metallogenic prognosis manganese ore
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Separate Analysis of Remote Sensing Information of Structures of Different Geological Periods and Quantitative Study of Corresponding Tectonic Stress Fields 被引量:1
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作者 Yang Wunian and Zhu Zhangsen Institute of Remote Sensing and GIS, Chengdu University of Technology,Chengdu, Sichuan Liu Xinzhu Yang Wencai 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 1997年第3期344-354,共11页
The structural feature shown on a remote sensing image is a synthetic result ofcombination of the deformations produced during the entire geological history of an area.Therefore, the respective tectonic stress field o... The structural feature shown on a remote sensing image is a synthetic result ofcombination of the deformations produced during the entire geological history of an area.Therefore, the respective tectonic stress field of each of the different stages in the complexdeformation of an area can be reconstructed in three steps: (1) geological structures formed atdifferent times are distinguished in remote sensing image interpretation; (2) structuraldeformation fields at different stages are determined by analyzing relationships betweenmicrostructures (joints and fractures) and the related structures (folds and faults); and (3)tectonic stress fields at different stages are respectively recovered through a study of the featuresof structural deformation fields in different periods. Circular structures and related circlular and radial joints are correlated in space to con-cealed structural rises. The authors propose a new method for establishing a natural model ofthe concealed structural rises and calculating the tectonic stress field by using quantitative dataof the remote sensing information of circular structures and related linear structures. 展开更多
关键词 separate analysis of the remote sensing information field circular structure linear structure stress field quantitative analysis 3—dimensional colour structural block diagram
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Characteristics of Coherence and Information for the Davydov Soliton Field 被引量:1
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作者 Bi Qiao Kongzhi Song Harry E. Ruda 《Journal of Modern Physics》 2012年第12期1907-1913,共7页
In this work, a generalized Davydov soliton field (DSF) has been investigated. The characteristics of correlation and information for the filed are emphasized and studied. It is a sort of correlation among so called g... In this work, a generalized Davydov soliton field (DSF) has been investigated. The characteristics of correlation and information for the filed are emphasized and studied. It is a sort of correlation among so called generalized solitons so that the field may appear to some macroscopic quantum properties such as the superconductivity at room temperature. Secondly, the character of information for the field can be described by a nonlinear Liouville equation in the quantum information representation. This provides a basis to express information quality of DSF, which means that DSF can influence or drive object by using (soliton type of) quantum information density. All these two aspects provide a foundation which possibly explains many potential biological functions of human body such as some complex bio-electromagnetic phenomena and their interactions with objects. 展开更多
关键词 SOLITON Nonlinear Interaction BIOLOGICAL field QUANTUM information COHERENCE
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STUDY ON EXTRACTING METHODS OF BURIED GEOLOGICAL INFORMATION IN HUAIBEI COAL FIELD 被引量:1
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作者 王四龙 赵学军 +3 位作者 凌贻棕 刘玉荣 宁书年 侯德文 《Journal of Coal Science & Engineering(China)》 1999年第1期11-15,共5页
It is discussed features and tbe producing mechanism of buried geological information in geological, geophysical and remote sensing data in Huaibei coal field, and studied the methods extracting buried tectonic and ig... It is discussed features and tbe producing mechanism of buried geological information in geological, geophysical and remote sensing data in Huaibei coal field, and studied the methods extracting buried tectonic and igneous rock information from various geologicaI data using digital image processing techoiques. 展开更多
关键词 Huaibei coal field geological data buried geological information digital image processing
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On information field of clinical diagnosis 被引量:1
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作者 曹茂开 《Journal of Medical Colleges of PLA(China)》 CAS 2003年第6期377-379,共3页
“Field” is a universal phenomenon existing in both nature and society, and determines the existence and significance of all materials or information. The man being has always been generating and carrying a large qua... “Field” is a universal phenomenon existing in both nature and society, and determines the existence and significance of all materials or information. The man being has always been generating and carrying a large quantity of life information in his whole life. Each piece of life information has an independent information field. The life information field includes such three subfields as bioinformation field, psychoinformation field and psycho-bioinformation field. The clinical diagnosis information field which is a specific information field within the information field of human activities consists of all information concerning man’s health. Only after we have cognized and ascertained the clinic diagnosis information field, can we accurately utilize its function to serve the human being. 展开更多
关键词 field information field clinical diagnosis information field functions and characteristics
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Information Science Roles in the Emerging Field of Data Science 被引量:1
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作者 Gary Marchionini 《Journal of Data and Information Science》 2016年第2期1-6,共6页
There has long been discussion about the distinctions of library science,information science,and informatics,and how these areas differ and overlap with computer science.Today the term data science is emerging that ge... There has long been discussion about the distinctions of library science,information science,and informatics,and how these areas differ and overlap with computer science.Today the term data science is emerging that generates excitement and questions about how it relates to and differs from these other areas of study. 展开更多
关键词 information Science Roles in the Emerging field of Data Science
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Information Technology Research on Productivity Evaluation of Gravel-mulched Field in Ningxia
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作者 Bin WANG Juncang TIAN 《Agricultural Biotechnology》 CAS 2019年第3期116-118,125,共4页
The evaluation process of traditional land productivity is relatively complex,and the evaluation indices and results cannot display visually.With the development of geographic information system science,there are more... The evaluation process of traditional land productivity is relatively complex,and the evaluation indices and results cannot display visually.With the development of geographic information system science,there are more and more studies on the GIS-based land productivity evaluation.GIS system can combine the evaluation model with information system software,realizing the visual display of all the evaluation factors.In this paper,with the development process of GIS-based management information system as references,the management information system for GIS-based gravel-mulched field productivity evaluation was designed and developed by combining with the SI model for gravel-mulched field productivity evaluation.The system was developed under VB environment,integrated with MapInfo,and the evaluation results could be shown visually in the system windows. 展开更多
关键词 Gravel-mulched field PRODUCTIVITY EVALUATION MODEL information system
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Determining the characteristics of the initial fixed-focus of laser beam riding guidance information field
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作者 梅跃松 于剑桥 +1 位作者 于天朋 李景须 《Journal of Beijing Institute of Technology》 EI CAS 2013年第1期6-11,共6页
Determining characteristics of the initial fixed-focus are a key technique for the design of laser beam riding guidance missile. Through analyzing the effects of the initial cone information field in guidance and cont... Determining characteristics of the initial fixed-focus are a key technique for the design of laser beam riding guidance missile. Through analyzing the effects of the initial cone information field in guidance and control system of missile, those effects are considered as an approximate lead com- pensation network. The position and time of guidance spot initial fixed-focus can be designed. This method is applied to determine the characteristics of the initial fixed-focus of laser information field for a laser beam guidance gun-launched missile. The results of design and simulation show that the initial cone information field apparently speeds up convergence on the initial trajectory, and provides a guarantee for the implementation of minimum range index of a missile system. 展开更多
关键词 laser beam riding guidance laser information field lead-in trajectory missile guidanceand control system gun-launched missile
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Study of the Evolutionary Characteristics of Precursor Information Fields in North China Region and Their Relation to Earthquakes
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作者 Ping Jianjun,Luo Lange and Cao SuchaoSeismoiogicaJ Bureau of Hehei Province, Shijiazhuang 050021 , China 《Earthquake Research in China》 2001年第1期36-46,共11页
On the basis of previous study results about the seismic anomaly precursor information quantity, universal and synthetic mathematical expressions that describe the precursor information quantity of various seismic ano... On the basis of previous study results about the seismic anomaly precursor information quantity, universal and synthetic mathematical expressions that describe the precursor information quantity of various seismic anomalies are further given. Starting from large amounts of data of earthquake cases, the problem of the sustained effective time of seismic anomaly was studied again and the mathematical relationship between the sustained effective time of seismic anomaly and continuing effective time of seismic anomaly was further established. About one million pieces of precursor observation data belonging to 371 items of hydrochemistry, deformation, geomagnetism, stress, water level, geoelectricity, etc. In North China region in the period of 1980~ 1997 were collected and sorted out, and the seismic anomaly precursor information quantity of these items was calculated item by item. The evolutionary characteristics of seismic anomaly precursor information field in North China region in about 20 years and their relation to earthquakes were studied; an index system for medium- and short-term predictions of earthquakes with Ms ≥ 5.0 in North China region was established. After having checked by the R-value scoring method, the index system for synthetic earthquake prediction was proved to be of certain efficacy in medium- and short-term earthquake prediction. 展开更多
关键词 Earthquake ANOMALY information field Evolutional CHARACTERISTICS
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Visual Exploration Research in the Field of Library and Information Based on Co-occurrence Analysis
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作者 Hao Wang 《Proceedings of Business and Economic Studies》 2019年第4期13-17,共5页
Towards current modern society,our country’s library and information science is not only rapid development,but it also has won the favor of many researchers in more than a decade of development.Due to new technology ... Towards current modern society,our country’s library and information science is not only rapid development,but it also has won the favor of many researchers in more than a decade of development.Due to new technology elements and methods are widely used in the discipline of library and information science,cause society our country’s library and information science has entered a new stage with the development of information industry.This paper is based on the research theory of co-occurrence analysis,clustering co-occurrence analysis of references,social network co-occurrence analysis from researchers and research institutions of the field of library and information science,to have more precise and in depth research on the research focus of the library and information science,the authors themselves and the research institutions circumstances over the past few years.At the same time,the theory is used to analyze the effects and analysis of accurate data,to ensure that researchers can analyze the theory of library and information science for a long time. 展开更多
关键词 CO-OCCURRENCE analysis field of LIBRARY and information VISUALIZATION EXPLORATION RESEARCH
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Research on the Dynamic Evolution of Deformation Field and the Acquisition of Seismogenic Information Before Lijiang Earthquake With Ms7.0
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作者 Wang Shuangxu,Jiang Zaisen,Cui Duxin,and Wang JiyingThe Second Center for Crustal Deformation Monitoring,SSB,Xi’an 710054,China 《Earthquake Research in China》 1998年第2期26-37,共12页
By using the integral dynamic adjustment of the "segmentation rate," this paper processes the leveling repetition measurement data of the Dianxi(western Yunnan)area since the 1980s,makes the fitting of the v... By using the integral dynamic adjustment of the "segmentation rate," this paper processes the leveling repetition measurement data of the Dianxi(western Yunnan)area since the 1980s,makes the fitting of the velocity surface for vertical deformation with multi-surface function,and splits information of the vertical deformation field.The dynamic evolution of the deformation field and vertical deformation information norm-shear deformation,extension deformation,volumetric deformation,and quasi acceleration,which are the distribution characteristics of variation,are studied by using the information split before the Lijiang earthquake with MS7.0(February 3,1996)in the north of the Dianxi(western Yunnan)leveling network.The results indicate that in Dianxi(western Yunnan)area,the acute vertical differential movement of the large-scale deformation velocity high gradient belt and high information norm distribution in the Lijiang,Yongsheng,and its adjacent areas in the middle stage of the 1980s is the reflection 展开更多
关键词 Lijiang EARTHQUAKE with Ms7.0 Dynamic evolution of deformation field SEISMOGENY information acquisition.
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iSchool的迷思:对iSchool运动有关LIS、iField及其关系的认知的反思 被引量:37
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作者 于良芝 梁司晨 《中国图书馆学报》 CSSCI 北大核心 2017年第3期18-33,共16页
本文以iSchool运动在全球范围内的迅速扩张为背景,以iSchool运动相关文献为依据,梳理iSchool运动对LIS和iField两个学科的认知,然后从学科历史性、正当性和合法性的角度反思当前认知。反思结果显示,尽管iSchool运动是一场针对原图书馆... 本文以iSchool运动在全球范围内的迅速扩张为背景,以iSchool运动相关文献为依据,梳理iSchool运动对LIS和iField两个学科的认知,然后从学科历史性、正当性和合法性的角度反思当前认知。反思结果显示,尽管iSchool运动是一场针对原图书馆情报学院的教育改革运动,却伴随着影响更加深远的学科重组。图书馆情报学(Library and Information Science,LIS)作为运动发起者的原生学科,是其首要的重组对象;iField作为其致力打造的新学科,则是其期望的重组结果。在这一重组过程中,LIS被严重曲解,iField被过度期许。本文认为,将iSchool运动建立在上述认知之上,会使LIS学科、LIS教育甚至iSchool学院都面临巨大的自我否定风险,因此建议iSchool学院在区分LIS学科(LIS as a discipline)和LIS社群(LIS as a community)的基础上,重新审视当初的LIS教育危机。图3。参考文献65。 展开更多
关键词 iSchool运动 图书馆情报学学科 图书馆情报学教育 ifield
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iField视域下的信息可信度研究:概念溯源、主题演化与未来展望 被引量:10
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作者 宋士杰 赵宇翔 朱庆华 《中国图书馆学报》 CSSCI 北大核心 2022年第1期107-126,共20页
信息技术的蓬勃发展带来了全球信息的爆炸式增长,同时也使人们在面对海量信息时必须充分考虑可信度问题。国际iSchools运动衍生出的iField学科以图书馆学、情报学为代表,也与传播学、计算机科学等其他信息相关学科有一定交叉。iField视... 信息技术的蓬勃发展带来了全球信息的爆炸式增长,同时也使人们在面对海量信息时必须充分考虑可信度问题。国际iSchools运动衍生出的iField学科以图书馆学、情报学为代表,也与传播学、计算机科学等其他信息相关学科有一定交叉。iField视域下的可信度研究涉及人、信息、技术与社会的交互,本文梳理过去二十余年间国内外在这一领域的研究和探索。首先,从概念内涵、理论基础、研究方法三个层面对可信度研究进行溯源;其次,基于技术环境与社会环境变迁的双重视角解析可信度研究的主题演化逻辑,总结可信度研究在Web 1.0、Web2.0、社交媒体、人工智能四个标志性阶段的研究重点与难点,并提炼出可信度研究的主题演化框架;最后,从概念内涵拓展、研究方法革新、可信度话题延展等角度对未来研究进行了前沿展望。本文希望厘清可信度研究的发展脉络,推动可信度研究的进一步拓新,为未来网络信息资源治理实践提供参考。 展开更多
关键词 信息可信度 概念溯源 研究方法 主题演化 研究综述 ifield
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On the physical model of earthquake precursor fields and the mechanism of precursors'timespace distribution(Ⅲ)──anomalies of seismicity and crustal deformation and their mechanisms when a strong earthquake is in prep 被引量:3
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作者 梅世蓉 《Acta Seismologica Sinica(English Edition)》 CSCD 1996年第2期223-234,共12页
By studying the seismicity pattern before 37 earthquakes with M≥6. 0 in North China and the pattern of crustal deformation in the Capital Area from 1954 to 1992, some abnormal characteristics of these patterns before... By studying the seismicity pattern before 37 earthquakes with M≥6. 0 in North China and the pattern of crustal deformation in the Capital Area from 1954 to 1992, some abnormal characteristics of these patterns before strong earthquakes have been extracted. A comparison has been made between the anomalies of these two kinds of Patterns. From the results we can know the following. ① Before a strong earthquake, the seismicity will strengthen and the crustal deformation rate will increase. ② Several years before a strong earthquake, there will be seismic gaps and deformation gaps around the epicenter of the quake. ③ The dynamic parameters of patterns all show a decrease in information dimension. This means that the crustal deformation has become more and more localized with time and it gives an important indication showing that a strong earthquake is in preparation. At the end of the paper, the physical mechanisms of the abnormal patterns of seismicity and crustal deformationhave been explained in a unified way in terms of the earthquake-generating model of a inhomogeneous strongbody in inhmogeneous media. 展开更多
关键词 seismicity pattern crustal deformation field localization of deformation pattern dynamics information dimension.
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Assessment of rice fields by GIS/GPS-supported classification of MODIS data 被引量:3
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作者 程乾 黄敬峰 王人潮 《Journal of Zhejiang University Science》 EI CSCD 2004年第4期412-417,共6页
The new Moderate-Resolution Imaging Spectroradiometer (MODIS) satellite image offers a large choice of opportunities for operational applications. The 1-km Advanced Very High Resolution Radiometer (AVHRR) image is not... The new Moderate-Resolution Imaging Spectroradiometer (MODIS) satellite image offers a large choice of opportunities for operational applications. The 1-km Advanced Very High Resolution Radiometer (AVHRR) image is not suitable for retrieval of field level parameter and Landsat data are not frequent enough for monitoring changes in crop parameters during the critical crop growth periods.A methodology to map areas of paddy fields using MODIS,geographic information system (GIS) and global position system (GPS) is introduced in this paper. Training samples are selected and located with the help of GPS to provide maximal accuracy.A concept of assessing areas of potential cultivation of rice is suggested by means of GIS integration. By integration of MODIS with GIS and GPS technologies the actual areas of rice fields in 2002 have been mapped. The classification accuracy was 95.7% percent compared with the statistical data of the Agricultural Bureau of Zhejiang Province. 展开更多
关键词 Areas of rice fields Moderate-Resolution Imaging Spectroradiometer (MODIS) Geographic information system (GIS) Global position system (GPS)
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Is There an Information Field in the Life World? Empirical Approach Using Electrophotonic Analysis 被引量:1
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作者 Erico Azevedo Jose Pissolato Filho 《Journal of Life Sciences》 2017年第4期191-201,共11页
This paper presents a brief review of distant biological communication phenomena, information fields explained as a transduction of information without energy displacement, experimental requirements for testing this h... This paper presents a brief review of distant biological communication phenomena, information fields explained as a transduction of information without energy displacement, experimental requirements for testing this hypothesis with human beings using electrophotonic analysis, oxymetry and electromagnetic shielding. Finally, authors present preliminary results and future work on this new field of interdisciplinary research. 展开更多
关键词 Semantic fields eletrophotonic analysis quantum biocommunication information field hypothesis test.
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Vertical structure of predictability and information transport over the Northern Hemisphere
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作者 冯爱霞 王启光 +1 位作者 龚志强 封国林 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第2期661-668,共8页
Based on nonlinear prediction and information theory, vertical heterogeneity of predictability and information loss rate in geopotential height field are obtained over the Northern Hemisphere. On a seasonal-to-interan... Based on nonlinear prediction and information theory, vertical heterogeneity of predictability and information loss rate in geopotential height field are obtained over the Northern Hemisphere. On a seasonal-to-interannual time scale, the predictability is low in the lower troposphere and high in the mid-upper troposphere. However, within mid-upper troposphere over the subtropics ocean area, there is a relatively poor predictability. These conclusions also fit the seasonal time scale. Moving to the interannual time scale, the predictability becomes high in the lower troposphere and low in the mid-upper troposphere, contrary to the former case. On the whole the interannual trend is more predictable than the seasonal trend. The average information loss rate is low over the mid-east Pacific, west of North America, Atlantic and Eurasia, and the atmosphere over other places has a relatively high information loss rate on all-time scales. Two channels are found steadily over the Pacific Ocean and Atlantic Ocean in subtropics. There are also unstable channels. The four- season influence on predictability and information communication are studied. The predictability is low, no matter which season data are removed and each season plays an important role in the existence of the channels, except for the winter. The predictability and teleconnections are paramount issues in atmospheric science, and the teleconnections may be established by communication channels. So, this work is interesting since it reveals the vertical structure of predictability distribution, channel locations, and the contributions of different time scales to them and their variations under different seasons. 展开更多
关键词 geopotential height field information theory information loss rate PREDICTABILITY
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Quantum Information Transfer from a Double Quantum Dot System to a Cavity Field
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作者 谭庆收 董勇 匡乐满 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第1期71-74,共4页
In this paper, we propose a scheme to realize quantum information transfer from a double quantum dot (DQD) system to a quantized cavity field. The DQD and the cavity field are treated as a two-state charge qubit and... In this paper, we propose a scheme to realize quantum information transfer from a double quantum dot (DQD) system to a quantized cavity field. The DQD and the cavity field are treated as a two-state charge qubit and a continuous-variable system, respectively. It is shown that quantum information encoded in the two-state DQD system can be transferred to quantum states of the cavity field with a continuous-variable basis through appropriate projective measurements with respect to the DQD. 展开更多
关键词 quantum information transfer double quantum dot cavity field charge qubit coherent state
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A New Approach of Time Series Variation Based on Power Links and Field Association Words
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作者 Zohair S. Malki El-Sayed Atlam +3 位作者 Talal H. Noor Ahmad Reda Alzighaibi Ghada Elmarhomy Abdallah A. Mohamed 《Journal of Computer and Communications》 2020年第3期72-85,共14页
This paper has proposed a new methodology extracting stability classes of field association words depending on automatically power link analysis to enhance the precision of decision tree. In this paper, we have studie... This paper has proposed a new methodology extracting stability classes of field association words depending on automatically power link analysis to enhance the precision of decision tree. In this paper, we have studied the effects of the time variation based on the frequencies of specific words called field association words that connected to documents using power link in a specific period. The stability classes have referred to the popularity of field association words based on the change of time in a given period. The new approach has evaluated by conducting experiments simulating results of 1575 files (about 5.16 MB). Based on these experiments, it has turned out that, the F-measure for ascending, stable and descending classes have achieved 93.6%, 99.8% and 75.7%, respectively. These results mean that F-measure was increasing by 12%, 4% and 34% than traditional methods because of the power link analysis. 展开更多
关键词 information RETRIEVAL Time CHANGING POWER Link Analysis field Association WORDS DECISION Tree
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DESIGN OF SPARSE ARRAY FOR MAD IMAGING BASED ON MAXIMIZING INFORMATION CAPACITY
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作者 Li Lianlin B.Jafarpour 《Journal of Electronics(China)》 2013年第5期476-482,共7页
In past years,growing efforts have been made to the rapid interpretation of magnetic field data acquired by a sparse synthetic or real magnetic sensor array.An appealing requirement on such sparse array arranged withi... In past years,growing efforts have been made to the rapid interpretation of magnetic field data acquired by a sparse synthetic or real magnetic sensor array.An appealing requirement on such sparse array arranged within a specified survey region is that to make the number of sensor elements as small as possible,meanwhile without deteriorating imaging quality.For this end,we propose a novel methodology of arranging sensors in an optimal manner,exploring the concept of information capacity developed originally in the communication society.The proposed scheme reduces mathematically the design of a sparse sensor array into solving a combinatorial optimization problem,which can be resolved efficiently using widely adopted Simultaneous Perturbation and Statistical Algorithm(SPSA).Three sets of numerical examples of designing optimal sensor array are provided to demonstrate the performance of proposed methodology. 展开更多
关键词 Sparse array Magnetic vector and tensor fields Maximizing information capacity Simultaneous Perturbation and Statistical Algorithm(SPSA) Geophysics exploration
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