Water-related diseases,including diarrhea,are a leading cause of death in children of developing countries.However,they can be prevented and controlled by improving access to safe drinking water and sanitation,
Memristor with memory properties can be applied to connection points(synapses)between cells in a cellular neural network(CNN).This paper highlights memristor crossbar-based multilayer CNN(MCM-CNN)and its application t...Memristor with memory properties can be applied to connection points(synapses)between cells in a cellular neural network(CNN).This paper highlights memristor crossbar-based multilayer CNN(MCM-CNN)and its application to edge detection.An MCM-CNN is designed by adopting a memristor crossbar composed of a pair of memristors.MCM-CNN based on the memristor crossbar with changeable weight is suitable for edge detection of a binary image and a color image considering its characteristics of programmablization and compactation.Figure of merit(FOM)is introduced to evaluate the proposed structure and several traditional edge detection operators for edge detection results.Experiment results show that the FOM of MCM-CNN is three times more than that of the traditional edge detection operators.展开更多
A fault identification method ofrotating machinery is proposed,which combines wavelet packet of time-frequency analysis and manifold learning.Firstly,the sampled vibration signal is decomposed to multilayer informatio...A fault identification method ofrotating machinery is proposed,which combines wavelet packet of time-frequency analysis and manifold learning.Firstly,the sampled vibration signal is decomposed to multilayer information with wavelet packet decomposition(WPD) method.Andevery level data of wavelet packet decomposition is processed bydemodulatingof Hilbert transform,eliminating the high frequency noiseof FIR filterand reducing the data length of the low frequency of resampling.Further,every level data vector is deal with normalization and calculated for the auto power spectrum.Finally,the manifold learning methods of t distributed stochastic neighbor embedding(t-SNE) is applied to do dimension reduction to generate 2D manifold figure data.Different fault forms of gearbox have different manifold features,which is used to identify failure status of equipment.With the experiment test,the feasibility and effectiveness of this identification method is verified.展开更多
A new interferometer for extreme ultraviolet (EUV) radiation with a laser produced plasma (LPP) laboratory source is under construction. The LPP source is operated with a Sn solid rod target on which pulsed YAG laser ...A new interferometer for extreme ultraviolet (EUV) radiation with a laser produced plasma (LPP) laboratory source is under construction. The LPP source is operated with a Sn solid rod target on which pulsed YAG laser is focused to produce high temperature plasma emitting EUV radiation. The source is equipped with a newly designed debris stopper protecting a condenser multilayer mirror from the particle debris of the target. The condenser mirror focuses the light onto an EUV beam-splitter to form transmitted and reflected paths for producing interference fringes of a sharing type. The optical configuration is of a common path based on a triangular path type with a focusing at the beam-splitter, which is enabled to produce fringes by a low coherence radiation with a standard optical quality beam-splitter. The fringes are recorded by an imaging plate with pixels as small as 25μm. The dynamic range of linearity in detection of the EUV light was found to be more than 10 4 with sensitivity of 10 4 photons/pixel, enough for the purpose of interferogram recording, possibly with one laser shot.展开更多
Acta Veterinaria et Zootechnica Sinica(Chinese Journal of Animal and Veterinary Sciences,CJAVS)is one of the earliest scholarly journals in animal and veterinary sciences of China(first published in 1956).The CJAVS(no...Acta Veterinaria et Zootechnica Sinica(Chinese Journal of Animal and Veterinary Sciences,CJAVS)is one of the earliest scholarly journals in animal and veterinary sciences of China(first published in 1956).The CJAVS(now published monthly),is supervised by the China Association for Science and Technology(CAST),sponsored by Chinese Association of Animal Science and Veterinary Medicine(CAAV).and is edited by the Editorial Com-展开更多
The paper described the coking plant and Lurgi gasifier plant waste water types and characteristics , comparing the COD and ammonia-N level in different source of waste water in the plant.The currently maturity coking...The paper described the coking plant and Lurgi gasifier plant waste water types and characteristics , comparing the COD and ammonia-N level in different source of waste water in the plant.The currently maturity coking plant waste water treatment method was statement in the paper and analyzed the pros and cons of each method.The primary cost analysis of each type of waste water treatment was also completed in the paper.According to these analyses , recommendation was prepared for coking plant and Lurgi gasifier plant waste water treatment.展开更多
Sand/dust test is one of the key projects to examine the environmental adaptability of ordnance equipment.In order to decrease the abrasion of test facility caused by the sand/dust particles,the particles contained in...Sand/dust test is one of the key projects to examine the environmental adaptability of ordnance equipment.In order to decrease the abrasion of test facility caused by the sand/dust particles,the particles contained in the airflowneed to be reclaimed effectively.Amathematical model of Useparator is established.The flowfield and the trajectories of particles inside the separator are obtained using a numerical simulation method,and the separation efficiency and pressure drop of separator with different rows of separate components are also obtained at various flowvelocities.The simulation results indicate that the efficiency of U inertia separator is affected by the flowvelocity evidently,and a reasonably designed separator can meet the requirement of the separation efficiency in particular situation.The results can be use as reference for the design and test of sand/dust separate systems.展开更多
Superconducting thin films of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub>（Y-Ba-Cu-O） with Tc more than 85K have been deposited in situ by metalorganic chemical vapor deposition ...Superconducting thin films of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub>（Y-Ba-Cu-O） with Tc more than 85K have been deposited in situ by metalorganic chemical vapor deposition （MOCVD） on yttria stabilized zirconia（YSZ） substrates. The relationship of film orientation on substrate temperature and the lowest formation temperature region of superconducting phase have been obtained after changing the substrate temperature. The epitaxial relation between Y-Ba-Cu-O films and the YSZ su bstrates were discussed.展开更多
1.Cotton Sciencepublishes original papers,brief notes and review articles in all areas of cotton research,including bio-technology ,classic and molecular genetics ,growth and development ,pathology and physiology ,etc .
12001 Transformational Logic of Numbers of PurseEquivalence and its Error. Xiao Mingyao: 1(3). 1980pp 190--197Multiplier or counter --type adder can be usually used torealize the multiplication of two multidigit figur...12001 Transformational Logic of Numbers of PurseEquivalence and its Error. Xiao Mingyao: 1(3). 1980pp 190--197Multiplier or counter --type adder can be usually used torealize the multiplication of two multidigit figures. Thispaper Introduces a Simple method, namely. the展开更多
在英语的各种“修辞手段”(figures of speech)中,隐喻(meptaphor)最具有代表性,因为它的使用频率最高,最富有表现力。但是对隐喻的作用以及它在英语中的地位,却有人多少持否定态度。他们认为(1)隐喻并非表达思想所必须的语言材料,只不...在英语的各种“修辞手段”(figures of speech)中,隐喻(meptaphor)最具有代表性,因为它的使用频率最高,最富有表现力。但是对隐喻的作用以及它在英语中的地位,却有人多少持否定态度。他们认为(1)隐喻并非表达思想所必须的语言材料,只不过是对语言起美化作用的装饰品而己。他们把隐喻说成是“蛋糕上的糖霜花”(frosting on the cake)——好看,也好吃;但是没有它。展开更多
Through a careful analysis and comparison of advertisements presented in English newspapers and magazines the paper makes an exploration of the rhetorical skills and stylistic features commonly used in English adverti...Through a careful analysis and comparison of advertisements presented in English newspapers and magazines the paper makes an exploration of the rhetorical skills and stylistic features commonly used in English advertisements so as to help us appreciate and master the highlights of English newspaper advertisements.展开更多
英美文学著作、报刊杂志、广播电视等中经常出现oxymoron〈矛盾修饰法〉这一古老而又富于强大生命力的修辞手段。先从几种权威辞书中看看oxymoron的定义: 1)The union of contradictory terms (Encyclopedia of English,Arco Publishing...英美文学著作、报刊杂志、广播电视等中经常出现oxymoron〈矛盾修饰法〉这一古老而又富于强大生命力的修辞手段。先从几种权威辞书中看看oxymoron的定义: 1)The union of contradictory terms (Encyclopedia of English,Arco Publishing Company,INC, New York,1978) 2)a figure of speech in which opposite or contradictory ideas or terms are combined (Webster’s New Twentieth Century Dictionary of The Eng- lish Language)展开更多
1. Applied Mathematics—A Journal of Chinese Universities is a nationwide magazine spon-sored by Zhejiang University. The Journal aims to issuing academic works in Applied Mathematics:original theoretical and (or) met...1. Applied Mathematics—A Journal of Chinese Universities is a nationwide magazine spon-sored by Zhejiang University. The Journal aims to issuing academic works in Applied Mathematics:original theoretical and (or) methodological research results, and innovative applications in practicalfields. Besides, reviews referring to progressive developments are also welcome. The Journal ispublished quarterly and distributed domestically and overseas.展开更多
文摘Water-related diseases,including diarrhea,are a leading cause of death in children of developing countries.However,they can be prevented and controlled by improving access to safe drinking water and sanitation,
基金supported by the Research Fund for International Young Scientists of the National Natural Science Foundation of China(61550110248)the Research on Fundamental Theory of Shared Intelligent Street Lamp for New Scene Service(H04W200495)+1 种基金Sichuan Science and Technology Program(2019YFG0190)the Research on Sino-Tibetan Multi-source Information Acquisition,Fusion,Data Mining and its Application(H04W170186).
文摘Memristor with memory properties can be applied to connection points(synapses)between cells in a cellular neural network(CNN).This paper highlights memristor crossbar-based multilayer CNN(MCM-CNN)and its application to edge detection.An MCM-CNN is designed by adopting a memristor crossbar composed of a pair of memristors.MCM-CNN based on the memristor crossbar with changeable weight is suitable for edge detection of a binary image and a color image considering its characteristics of programmablization and compactation.Figure of merit(FOM)is introduced to evaluate the proposed structure and several traditional edge detection operators for edge detection results.Experiment results show that the FOM of MCM-CNN is three times more than that of the traditional edge detection operators.
基金supported by the National Natural Science Foundation-supported Program(515750055)Beijing Municipal Natural Science Foundation(3131002)
文摘A fault identification method ofrotating machinery is proposed,which combines wavelet packet of time-frequency analysis and manifold learning.Firstly,the sampled vibration signal is decomposed to multilayer information with wavelet packet decomposition(WPD) method.Andevery level data of wavelet packet decomposition is processed bydemodulatingof Hilbert transform,eliminating the high frequency noiseof FIR filterand reducing the data length of the low frequency of resampling.Further,every level data vector is deal with normalization and calculated for the auto power spectrum.Finally,the manifold learning methods of t distributed stochastic neighbor embedding(t-SNE) is applied to do dimension reduction to generate 2D manifold figure data.Different fault forms of gearbox have different manifold features,which is used to identify failure status of equipment.With the experiment test,the feasibility and effectiveness of this identification method is verified.
文摘A new interferometer for extreme ultraviolet (EUV) radiation with a laser produced plasma (LPP) laboratory source is under construction. The LPP source is operated with a Sn solid rod target on which pulsed YAG laser is focused to produce high temperature plasma emitting EUV radiation. The source is equipped with a newly designed debris stopper protecting a condenser multilayer mirror from the particle debris of the target. The condenser mirror focuses the light onto an EUV beam-splitter to form transmitted and reflected paths for producing interference fringes of a sharing type. The optical configuration is of a common path based on a triangular path type with a focusing at the beam-splitter, which is enabled to produce fringes by a low coherence radiation with a standard optical quality beam-splitter. The fringes are recorded by an imaging plate with pixels as small as 25μm. The dynamic range of linearity in detection of the EUV light was found to be more than 10 4 with sensitivity of 10 4 photons/pixel, enough for the purpose of interferogram recording, possibly with one laser shot.
文摘Acta Veterinaria et Zootechnica Sinica(Chinese Journal of Animal and Veterinary Sciences,CJAVS)is one of the earliest scholarly journals in animal and veterinary sciences of China(first published in 1956).The CJAVS(now published monthly),is supervised by the China Association for Science and Technology(CAST),sponsored by Chinese Association of Animal Science and Veterinary Medicine(CAAV).and is edited by the Editorial Com-
文摘The paper described the coking plant and Lurgi gasifier plant waste water types and characteristics , comparing the COD and ammonia-N level in different source of waste water in the plant.The currently maturity coking plant waste water treatment method was statement in the paper and analyzed the pros and cons of each method.The primary cost analysis of each type of waste water treatment was also completed in the paper.According to these analyses , recommendation was prepared for coking plant and Lurgi gasifier plant waste water treatment.
文摘Sand/dust test is one of the key projects to examine the environmental adaptability of ordnance equipment.In order to decrease the abrasion of test facility caused by the sand/dust particles,the particles contained in the airflowneed to be reclaimed effectively.Amathematical model of Useparator is established.The flowfield and the trajectories of particles inside the separator are obtained using a numerical simulation method,and the separation efficiency and pressure drop of separator with different rows of separate components are also obtained at various flowvelocities.The simulation results indicate that the efficiency of U inertia separator is affected by the flowvelocity evidently,and a reasonably designed separator can meet the requirement of the separation efficiency in particular situation.The results can be use as reference for the design and test of sand/dust separate systems.
文摘Superconducting thin films of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub>（Y-Ba-Cu-O） with Tc more than 85K have been deposited in situ by metalorganic chemical vapor deposition （MOCVD） on yttria stabilized zirconia（YSZ） substrates. The relationship of film orientation on substrate temperature and the lowest formation temperature region of superconducting phase have been obtained after changing the substrate temperature. The epitaxial relation between Y-Ba-Cu-O films and the YSZ su bstrates were discussed.
文摘1.Cotton Sciencepublishes original papers,brief notes and review articles in all areas of cotton research,including bio-technology ,classic and molecular genetics ,growth and development ,pathology and physiology ,etc .
文摘12001 Transformational Logic of Numbers of PurseEquivalence and its Error. Xiao Mingyao: 1(3). 1980pp 190--197Multiplier or counter --type adder can be usually used torealize the multiplication of two multidigit figures. Thispaper Introduces a Simple method, namely. the
文摘在英语的各种“修辞手段”(figures of speech)中,隐喻(meptaphor)最具有代表性,因为它的使用频率最高,最富有表现力。但是对隐喻的作用以及它在英语中的地位,却有人多少持否定态度。他们认为(1)隐喻并非表达思想所必须的语言材料,只不过是对语言起美化作用的装饰品而己。他们把隐喻说成是“蛋糕上的糖霜花”(frosting on the cake)——好看,也好吃;但是没有它。
文摘Through a careful analysis and comparison of advertisements presented in English newspapers and magazines the paper makes an exploration of the rhetorical skills and stylistic features commonly used in English advertisements so as to help us appreciate and master the highlights of English newspaper advertisements.
文摘英美文学著作、报刊杂志、广播电视等中经常出现oxymoron〈矛盾修饰法〉这一古老而又富于强大生命力的修辞手段。先从几种权威辞书中看看oxymoron的定义: 1)The union of contradictory terms (Encyclopedia of English,Arco Publishing Company,INC, New York,1978) 2)a figure of speech in which opposite or contradictory ideas or terms are combined (Webster’s New Twentieth Century Dictionary of The Eng- lish Language)
文摘1. Applied Mathematics—A Journal of Chinese Universities is a nationwide magazine spon-sored by Zhejiang University. The Journal aims to issuing academic works in Applied Mathematics:original theoretical and (or) methodological research results, and innovative applications in practicalfields. Besides, reviews referring to progressive developments are also welcome. The Journal ispublished quarterly and distributed domestically and overseas.
