Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010)最新文献_第8页

Lossless embedding using pixel differences and histogram shifting technique 利用像素差和直方图移位技术进行无损嵌入

Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010) Pub Date : 2010-11-01 DOI: 10.1109/RSTSCC.2010.5712850

S. krishna, B. Abdul Rahim, F. Shaik, K. Soundara Rajan

{"title":"Lossless embedding using pixel differences and histogram shifting technique","authors":"S. krishna, B. Abdul Rahim, F. Shaik, K. Soundara Rajan","doi":"10.1109/RSTSCC.2010.5712850","DOIUrl":"https://doi.org/10.1109/RSTSCC.2010.5712850","url":null,"abstract":"Generally hiding information destroys the host image, however, some sensitive images for which any embedding distortion of the image is intolerable, such as military images, medical images, or artwork preservation etc. Reversible data hiding techniques are designed to solve the problem of Lossless embedding of large messages in digital images so that after the embedded message is extracted, the image can be completely restored to its original state before embedding occurred. But the solutions came with histogram-based reversible data hiding techniques, in which the message is embedded into the histogram bin. However, in those techniques the recipients are communicated pairs of peak and zero points. By extending to the histogram modification technique using pixel differences hiding capacity can be increased and using a binary tree structure requirement to communicate pairs of peak and zero points to the recipient is eliminated. By adopting a histogram shifting technique overflow and underflow can be prevented. Neighbor pixels are often highly correlated and have spatial redundancy; the differences have a Laplacian-like distribution. This enables large Hiding capacity increased while keeping embedding distortion low. The results show using pixel differences & histogram shifting, increase in PSNR and decrease in MSE is seen as compared to histogram based reversible data hiding technique.","PeriodicalId":254761,"journal":{"name":"Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127927787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

An analysis on eddy current flowmeter — a review 涡流流量计分析综述

Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010) Pub Date : 2010-11-01 DOI: 10.1109/RSTSCC.2010.5712844

S. Poornapushpakala, C. Gomathy, J. Sylvia, B. Krishnakumar, P. Kalyanasundaram

{"title":"An analysis on eddy current flowmeter — a review","authors":"S. Poornapushpakala, C. Gomathy, J. Sylvia, B. Krishnakumar, P. Kalyanasundaram","doi":"10.1109/RSTSCC.2010.5712844","DOIUrl":"https://doi.org/10.1109/RSTSCC.2010.5712844","url":null,"abstract":"Measurement of flow in liquid metal systems exhibit unusual problems because of the severe operating environments like high operating temperatures and the chemical reactivity of most liquid metals. The liquid metal flowmeters should have the capacity to withstand high gamma radiation levels and rapid thermal transients. The commonly used flowmeters in liquid metal systems are permanent magnet Flowmeter, direct current electromagnet Flowmeter and alternating current electromagnet flowmeter. In Alternating current electromagnet Flowmeter there are three types namely transverse field Flowmeter, Eddy Current Flowmeter and E-Core Flowmeter. The subject of analysis is the Eddy current Flowmeter. Eddy currents are generated when a moving conductor experiences changes in the magnetic field generated by a stationary object, as well as when a stationary conductor encounters a varying magnetic field. A flowmeter which works on this principle is the Eddy Current Flowmeter. This paper gives a thorough survey on eddy current flowmeter, its construction, simulation results and its performance under various test conditions in different organization","PeriodicalId":254761,"journal":{"name":"Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115697015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Electronic power supply design for Sathyabama University Nano Satellite 中山大学纳米卫星电子电源设计

Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010) Pub Date : 2010-11-01 DOI: 10.1109/RSTSCC.2010.5712891

B. Sheela Rani, M. Baig, K. Vasanth, V. Kannan

{"title":"Electronic power supply design for Sathyabama University Nano Satellite","authors":"B. Sheela Rani, M. Baig, K. Vasanth, V. Kannan","doi":"10.1109/RSTSCC.2010.5712891","DOIUrl":"https://doi.org/10.1109/RSTSCC.2010.5712891","url":null,"abstract":"This paper presents the practical and theoretical design of the power supply unit (PSU) of the Sathyabama University Nano Satellite. The solar arrays are configured such that the cells of each side on the satellite are connected in series and the four sides are connected in parallel. This configuration has been chosen, because it was found that it is the best trade off between ease of maximum power point tracking(MPPT) and to improve the converter performance. The diodes protect the cells from conducting a reverse current. The battery charge controller acts as a central unit of the electronic subsystem, it takes care of charging the battery unit. It basically transfers power from solar panel to the battery at unregulated bus. The choice of battery configuration and capacity is calculated on the basis of orbital calculation. This battery is also responsible for voltage control of the intermediate power bus between the two converters. The batteries keep the average voltage in the range 6.0–8.4V. This is used to convert the intermediate bus voltage to 5v and 3.3v bus levels for the other subsystem. The simulation results of various converters are shown.","PeriodicalId":254761,"journal":{"name":"Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114885770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Right hand circular polarization of a quadrifilar helical antenna for satellite and mobile communication systems 卫星和移动通信系统用四线螺旋天线的右圆极化

Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010) Pub Date : 2010-11-01 DOI: 10.1109/RSTSCC.2010.5712817

Naresh Bhuma, Ch. Himabindh

引用次数: 4

Graduated granulation of spatial information for efficient, effective business activity monitoring 空间信息分级粒化，实现高效、有效的业务活动监控

Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010) Pub Date : 2010-11-01 DOI: 10.1109/RSTSCC.2010.5712809

V. Kanagavalli, K. Raja

{"title":"Graduated granulation of spatial information for efficient, effective business activity monitoring","authors":"V. Kanagavalli, K. Raja","doi":"10.1109/RSTSCC.2010.5712809","DOIUrl":"https://doi.org/10.1109/RSTSCC.2010.5712809","url":null,"abstract":"Graduated Granulation is an important feature of fuzzy logic system. It is used to imitate the process of human interpretation and assimilation of knowledge, given an uncertain situation with imprecise data at hand. Spatial locations are an important factor attributing to the success of business activities. The business prospers or perishes depending upon the way it handles its data for making smart decisions. Though business activities and decisions often rely on enough speculations and well driven information, there are umpteen number of fuzzy situation in this domain. The spatial component of data has been for large time ignored by the business community or was presented only as supplementary information. Now, people have realized the importance and impact of spatial data on the business enhancement. Granulation of spatial information may be due to want of data or may be a cost cut off measure or privacy preserving measure. This paper discusses the scope and application of graduated (fuzzy) granulation of spatial data from news articles, customer feedbacks for increasing the efficiency and effectiveness of the business activity monitoring.","PeriodicalId":254761,"journal":{"name":"Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117349776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Friction weldability of 7075 aluminium alloy 7075铝合金的摩擦可焊性

Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010) Pub Date : 2010-11-01 DOI: 10.1109/RSTSCC.2010.5712849

R. Sathish, D. Ananthapadmanaban, G. S. Nixon, V. Harish

引用次数: 0

Data mining framework for video data 视频数据的数据挖掘框架

Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010) Pub Date : 2010-11-01 DOI: 10.1109/RSTSCC.2010.5712827

D. Saravanan, S. Srinivasan

引用次数: 22

Predicting possible landcover changes in the coral islands of Gulf Mannar due to climate change induced sea-level rise- a remote sensing based study 预测马纳尔湾珊瑚岛由于气候变化引起的海平面上升可能发生的土地覆盖变化——一项基于遥感的研究

Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010) Pub Date : 2010-11-01 DOI: 10.1109/RSTSCC.2010.5712866

S. Subha Dharani, B. Gayathri, S. Sanjeevi

{"title":"Predicting possible landcover changes in the coral islands of Gulf Mannar due to climate change induced sea-level rise- a remote sensing based study","authors":"S. Subha Dharani, B. Gayathri, S. Sanjeevi","doi":"10.1109/RSTSCC.2010.5712866","DOIUrl":"https://doi.org/10.1109/RSTSCC.2010.5712866","url":null,"abstract":"Corals are among the most diverse and beautiful natural system in the world. They are also the source of many flourishing species of flora and fauna. In the present scenario, coral reefs in Gulf of Mannar can be categorized as “degrading”. The causes for the rapid degradation presently witnessed include the anthropogenic activity and natural causes such as sea-level rise and climate change. Comparing the previous data with the present data is the only way to analyze the ecosystem and assess the changes caused by nature and human influence. The purpose of this study is to use satellite remote sensing as a tool to monitor and estimate the prominent changes that have taken place in the coral islands of Gulf of Mannar over the past three decades. Satellite images of 6 islands namely Van, Koswari, Vilangushuli, Anaipar, Vaalimunai, and Talalari acquired between 1979 and 2009 were chosen to assess the various changes in the ecosystem. Landcover maps were generated by interpreting the multi-date images and digitizing, using GIS software, according to common interpretation key. SRTM DEM of the area is used to model the possible effect of future sea-level rise as a result of climate change. The possible effects are seen as submergence of the beaches, marsh land, sea grass, dunes and other types of coastal and island vegetation. Though the limitations of SRTM DEM are realized, this study has been attempted since it is only at the reconnaissance level. The image processing approaches adopted for visual interpretation and prediction of loss of land due to sea-level rise are linear contrast stretching, Gaussian stretching, density slicing etc. Analysis of the above mentioned data warns us of the need to manage an ecosystem of high biological diversity from threats including climate change induced sea level rise.","PeriodicalId":254761,"journal":{"name":"Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134407388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Energy efficient technologies and contribution of industries 节能技术和工业的贡献

Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010) Pub Date : 2010-11-01 DOI: 10.1109/RSTSCC.2010.5712841

K. Senthil Kumaran, D. Joshua Amarnath, A. Annam Renita, P. Stalin

{"title":"Energy efficient technologies and contribution of industries","authors":"K. Senthil Kumaran, D. Joshua Amarnath, A. Annam Renita, P. Stalin","doi":"10.1109/RSTSCC.2010.5712841","DOIUrl":"https://doi.org/10.1109/RSTSCC.2010.5712841","url":null,"abstract":"The revolution in the field of science led to proliferation of Industries and these industries play a key role in the economic development of the society but the impact on the environment is a devastating one. Release of toxic gases into the atmosphere, soil degradation, and water pollution created global warming and unpredictable climatic changes. The energy, in the form of raw materials, power and other utilities, are consumed without taking into consideration of their importance and in this scenario, conservation of energy becomes significant to protect the environment. To achieve this, industries should adopt the energy efficient technologies to reduce the specific energy consumption and also to act as environment friendly. Such energy efficient technologies [1] have been adopted in a fertilizer industry at Chennai that have a remarkable impact on the protection of environment and lowest energy level among the naphtha based fertilizer industries in India. This study focuses on the various technologies adopted by this industry to reduce energy levels and protection of the environment. CO2 absorption system: Carbon-di-oxide emission to atmosphere is avoided, saving the environment. Hydraulic turbine resulted in energy savings of 0.071Gcal/MT of ammonia. Low temperature super methanation catalyst resulted in energy savings of 0.047Gcal/MT of ammonia. Total heat recovery system in Urea process resulted in the reduction of energy level to 7.9Gcal/MT from 9.9Gcal/MT. York Compressor reduces the ammonia emission to atmosphere. Vaporized naphtha burners for firing system resulted in the energy savings of 2–2.5Gcal/MT of Ammonia and saving the environment. Process air compressor resulting in energy savings of 0.02Gcal/MT of ammonia","PeriodicalId":254761,"journal":{"name":"Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010)","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133571310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Analysis of noise reduction techniques on QRS ECG waveform - by applying different filters QRS心电波形降噪技术分析——应用不同滤波器

Recent Advances in Space Technology Services and Climate Change 2010 (RSTS & CC-2010) Pub Date : 2010-11-01 DOI: 10.1109/RSTSCC.2010.5712835

A. Jeyarani, T. Jaya Singh

引用次数: 28