检索结果-内蒙古大学图书馆

development AND APPLICATION OF algorithmS FOR SIMULATING TERRACES WITHIN SWAT

TRANSACTIONS OF THE ASABE 2013年第5期56卷 1715-1730页

作者： Shao, H. Baffaut, C. Gao, J. E. Nelson, N. O. Janssen, K. A. Pierzynski, G. M. Barnes, P. L. Northwest A&F Univ Coll Resources & Environm Yangling Shaanxi Peoples R China USDA ARS Cropping Syst & Water Qual Res Unit Columbia MO USA Northwest A&F Univ Chinese Acad Sci Inst Soil & Water Conservat Yangling Shaanxi Peoples R China Minist Water Resources Yangling Shaanxi Peoples R China Kansas State Univ Dept Agron Manhattan KS 66506 USA Kansas State Univ Dept Biol & Agr Engn Manhattan KS 66506 USA

Terraces have been proven to be an effective conservation practice for controlling high soil loss. In large hydrological programs such as the Soil and Water Assessment Tool (SWAT), terrace effects are simulated by adjusting the slope length and the USLE P-factor In this study, a process-based terrace algorithm was developed and incorporated into SWAT (version 2009) to simulate the environmental effects of different kinds of terraces, i.e., normal and bench terraces. The terrace algorithm was activated at the hydrological response unit (HRU) level. Terrace description, storage effects, and the flow interaction between the terraces and the HRU were also introduced in the method. The modified SWAT model was evaluated using a four-year, six-plot event runoff and sediment data set with five years of plant yield data collected on a natural rainfall terraced field in southeast Franklin County, Kansas. Results indicated that the model's performance was satisfactory in simulating single and average plot runoff as well as average plot sediment yields, with Nash-Sutcliffe efficiencies always greater than 0.5 and often greater than 0.7. The model's performance was less consistent in simulating sediment yields from the no-till plots. The development and incorporation of the terrace algorithm provide a process-based alternative to the use of the P-factor in representing the effectiveness of terraces.

关键词： algorithm development Erosion Runoff SWAT model Terraces

来源：评论

学校读者我要写书评

暂无评论

Z-transform and its application to development of scientific simulation algorithms

引用

COMPUTER APPLICATIONS IN ENGINEERING EDUCATION 2013年第1期21卷 75-88页

作者： Fazarinc, Zvonko Hewlett Packard Labs Palo Alto CA USA Stanford Univ EE Stanford CA 94305 USA

Engineers and educators find in computer simulations a powerful substitute for inability of calculus to produce closed form solutions to modern problems. But the validity of quasi-closed-form solutions produced by computers remains suspect. While no magic test exists, pieces of algorithms can individually be examined by the Z-transform [E. I. Jury, Sampled-data control systems, John Wiley & Sons, 1958]. Two examples from engineering and three from education are presented. (C) 2010 Wiley Periodicals, Inc. Comput Appl Eng Educ 21: 7588, 2013

关键词： Z-transform science simulations algorithm development physics algorithms mathe algorithms

来源：评论

学校读者我要写书评

暂无评论

An algorithm based on sea-level pressure fluctuations to identify major Baltic inflow events

引用

TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY 2014年第1期66卷 Article: 23452页

作者： Schimanke, S. Dieterich, C. Meier, H. E. M. Swedish Meteorol & Hydrol Inst Oceanog Res Unit S-60176 Norrkoping Sweden Stockholm Univ Dept Meteorol S-10691 Stockholm Sweden

Major Baltic inflows are an important process to sustain the sensitive steady state of the Baltic Sea. We introduce an algorithm to identify atmospheric variability favourable for major Baltic inflows. The algorithm is based on sea-level pressure (SLP) fields as the only parameter. Characteristic SLP pattern fluctuations include a precursory phase of 30 days and 10 days of inflow period. The algorithm identifies successfully the majority of observed major Baltic inflows between 1961 and 2010. In addition, the algorithm finds some occurrences which cannot be related to observed inflows. In these cases with favourable atmospheric conditions, inflows were precluded by contemporaneously existing saline water masses or strong freshwater supply. Moreover, the algorithm clearly identifies the stagnation periods as a lack of SLP variability favourable for MBIs. This indicates that the lack of inflows is mainly a consequence of missing atmospheric forcing during this period. The only striking inflow which is not identified by the algorithm is the event in January 2003. We demonstrate that this is due to the special evolution of SLP fields which are not comparable with any other event. Finally, the algorithm is applied to an ensemble of scenario simulations. The result indicates that the number of atmospheric events favourable for major Baltic inflows increases slightly in all scenarios.

关键词： major Baltic inflows algorithm development SLP variability Baltic Sea climate modeling

来源：评论

学校读者我要写书评

暂无评论

Low Cost MATLAB-Based Pulse Oximeter for Deployment in Research and development Applications

Low Cost MATLAB-Based Pulse Oximeter for Deployment in Resea...

引用

35th Annual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society (EMBC)

作者： Shokouhian, M. Morling, R. C. S. Kale, I. Univ Westminster Appl DSP & VLSI Res Grp Elect Network & Comp Engn Dept London W1R 8AL England Univ Westminster Appl DSP & VLSI Res Grp Dept Westminster London W1R 8AL England

ISBN: (纸本)9781457702167

Problems such as motion artifact and effects of ambient lights have forced developers to design different signal processing techniques and algorithms to increase the reliability and accuracy of the conventional pulse oximeter device. To evaluate the robustness of these techniques, they are applied either to recorded data or are implemented on chip to be applied to real-time data. Recorded data is the most common method of evaluating however it is not as reliable as real-time measurements. On the other hand, hardware implementation can be both expensive and time consuming. This paper presents a low cost MATLAB-based pulse oximeter that can be used for rapid evaluation of newly developed signal processing techniques and algorithms. Flexibility to apply different signal processing techniques, providing both processed and unprocessed data along with low implementation cost are the important features of this design which makes it ideal for research and development purposes, as well as commercial, hospital and healthcare application.

关键词： pulse oximeter pc-based algorithm development MATLAB

来源：评论

学校读者我要写书评

暂无评论

Developing Multiagent algorithms for Tactical Missions Using Simulation

引用

IEEE INTELLIGENT SYSTEMS 2013年第1期28卷 42-49页

作者： Komenda, Antonin Vokrinek, Jiri Cap, Michal Pechoucek, Michal Czech Tech Univ Fac Elect Engn Agent Technol Ctr CR-16635 Prague Czech Republic Czech Tech Univ Dept Comp Sci CR-16635 Prague Czech Republic Czech Tech Univ Agent Technol Ctr CR-16635 Prague Czech Republic

The development process and simulation architecture presented here help narrow the gap between how theoretical AI algorithms are traditionally designed and validated and how practical algorithms for controlling roboti... 详细信息

关键词： Digital Simulation Military Systems Mobile Robots Multi Agent Systems Multi Robot Systems Telerobotics Simulated Tactical Missions Robotic Asset Control AI algorithms Simulation Architecture Multiagent algorithm development Actuators Computational Modeling Robot Kinematics Adaptation Models algorithm Design And Analysis Heuristic algorithms Intelligent Systems Multiagent Simulation Tactical Mission Coalition Operations algorithm development

来源：评论

学校读者我要写书评

暂无评论

Challenges developing evidence-based algorithms for the trauma reception and resuscitation project

引用

INTERNATIONAL EMERGENCY NURSING 2013年第2期21卷 129-135页

作者： Lee, Geraldine A. Murray, Angela Bushnell, Rosie Niggemeyer, Louise E. La Trobe Univ Div Nursing & Midwifery Melbourne Vic Australia Alfred Hlth Alfred Hosp Emergency & Trauma Ctr Trauma Recept & Resuscitat Project Prahran Vic 3181 Australia Alfred Hosp Melbourne Vic 3181 Australia Alfred Hosp Dept Trauma Surg Prahran Vic 3181 Australia

A project based at the Alfred Emergency and Trauma Centre in Melbourne, Australia aimed to standardise trauma resuscitation, documentation and interventions by developing best practice algorithms. The primary study objective was to demonstrate a reduction in management errors using a real-time computer based algorithm (the study group) compared to the control group in an open randomised controlled interventional study. A baseline control group was also used for comparison with usual (current) practice. In order to examine the existing evidence and algorithms in trauma care, nine teams of emergency nurses and doctors were formed. Specific literature searches performed by each team revealed a paucity of evidence supporting clinical practice in the trauma setting for procedures. Subsequently, the multidisciplinary teams worked together and developed algorithms based on best practice. The process revealed three main areas of challenges in the development of algorithms: (i) clinical, (ii) research and (iii) nursing challenges. The completion of the project demonstrated benefits in the real-time computer based algorithm with a reduction in the error rate per patient from the baseline control group to the intervention study group (2.30 vs. 2.13, p = 0.04) and error-free resuscitations increasing from 16% to 21.8% (p = .049). This project supported the implementation of a real-time computer based algorithm system with improved protocol compliance and reduced errors and morbidity. (C) 2012 Elsevier Ltd. All rights reserved.

关键词： algorithm development Evidence-based practice Trauma resuscitation

来源：评论

学校读者我要写书评

暂无评论

development OF A NOVEL algorithm TO CALCULATE THE OPTIC PROPERTIES OF TEMPORAL AEROSOLS THROUGH REMOTE SENSING DATA MEASUREMENTS: PROSPECTIVE STUDY

DEVELOPMENT OF A NOVEL ALGORITHM TO CALCULATE THE OPTIC PROP...

引用

IEEE International Geoscience and Remote Sensing Symposium (IGARSS)

作者： Faus-Landeros, Gloria Elena Villalon-Turrubiates, Ivan E. Celarier, Edward A. Robinson, Dianne Q. ITESM Campus Guadalajara Zapopan 45201 Jalisco Mexico

ISBN: (纸本)9781467311595

Satellite' sensors as well as ground-based sun photometers instruments surface are utilized gather data about the quantitative composition of components in the Earth's atmosphere. The relationships among these components produce effects in different phenomena, like regional climate change. Aerosols, consisting of particles from 0.01 to 10 mu m, are atmosphere components, whose effects are still poorly understood. Through Remote Sensing, it is possible to classify them and gain information about their role in different atmospheric processes: low visibility, solar energy balance, cloud formation and increases or decreases of the quantity of precipitation. This paper describes how the study and analysis of satellite-based and ground-based measurements can be used to develop and validate a novel procedure to calculate the optical properties of temporal aerosols found in and around Guadalajara, based on previous algorithms:, to determine the aerosol size distribution function, scattering phase function, single scattering albedo, complex refractive index and asymmetry parameter. The quantifiable knowledge about the temporal and regional aerosols' optical properties will contribute to future investigations related to their quantitative effects on atmospheric processes in this region. These effects include: alteration of weather and climate, change of the tropospheric temperature, contribution to environmental ills, the formation and properties of the clouds, effects on the ecosystems, local solar energy balance, and the impacts on human health.

关键词： Photometry Remote Sensing aerosols aerosol's optical properties NASA satellite data inter comparison algorithm development

来源：评论

学校读者我要写书评

暂无评论

Two complementary model observers to evaluate reconstructions of simulated micro-calcifications in digital breast tomosynthesis

Two complementary model observers to evaluate reconstruction...

引用

Image Perception, Observer Performance, and Technology Assessment Conference, part of the SPIE Medical Imaging Symposium

作者： Michielsen, Koen Zanca, Federica Marshall, Nicholas Bosmans, Hilde Nuyts, Johan Katholieke Univ Leuven Dept Nucl Med Louvain Belgium

ISBN: (纸本)9780819494474

New imaging modalities need to be properly evaluated before being introduced in clinical practice. The gold standard is to perform clinical trials or dedicated clinical performance related observer experiments with experienced readers. Unfortunately this is not feasible during development or optimization of new reconstruction algorithms due to their many degrees of freedom. Our goal is to design a set of model observers to evaluate the performance of newly developed reconstruction methods on the assessment of micro-calcifications in digital breast tomosynthesis. In order to do so, the model observers need to evaluate both detection and classification of micro-calcifications. A channelized Hotelling observer was created for the detection task and a Hotelling observer working on an extracted feature vector was implemented for the classification task. These observers were evaluated on their ability to predict the results of human observers. Results from a previous observer study were used as reference to compare performance between human and model observers. This study evaluated detection of small micro-calcifications (100 - 200 mu m) by a free search task in a power law filtered noise background and classification of two types of larger micro-calcifications (200 - 600 mu m) in the same background. Scores from the free search study were evaluated using the weighted JAFROC method and the classification scores were analyzed using the DBM MRMC method. The same analysis methods were applied to the model observer scores. Results of the detection model observer were related linearly with the human observer results with a correlation coefficient of 0.962. The correlation coefficient for the classification task was 0.959 with a power law non-linear regression.

关键词： Digital breast tomosynthesis Data modeling Reconstruction algorithms Performance modeling Sensors Image segmentation algorithm development Optimization (mathematics) Spherical lenses Visualization

来源：评论

学校读者我要写书评

暂无评论

Geometrical interpretation of the adaptive coherence estimator for hyperspectral target detection

Geometrical interpretation of the adaptive coherence estimat...

引用

Conference on algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIX

作者： Bar, Shahar Bass, Ori Volfman, Alon Dallal, Tomer Rotman, Stanley R. Ben Gurion Univ Negev Dept Elec & Comp Eng IL-84105 Beer Sheva Israel

ISBN: (纸本)9780819495341

A hyperspectral cube consists of a set of images taken at numerous wavelengths. Hyperspectral image data analysis uses each material's distinctive patterns of reflection, absorption and emission of electromagnetic energy at specific wavelengths for classification or detection tasks. Because of the size of the hyperspectral cube, data reduction is definitely advantageous;when doing this, one wishes to maintain high performances with the least number of bands. Obviously in such a case, the choice of the bands will be critical. In this paper, we will consider one particular algorithm, the adaptive coherence estimator (ACE) for the detection of point targets. We give a quantitative interpretation of the dependence of the algorithm on the number and identity of the bands that have been chosen. Results on simulated data will be presented.

关键词： Target detection Detection and tracking algorithms Hyperspectral target detection Mathematical modeling Hyperspectral imaging Absorption algorithm development Data analysis Electromagnetism Image classification

来源：评论

学校读者我要写书评

暂无评论

Toward a real-time positioning system for a portable EMI sensor

Toward a real-time positioning system for a portable EMI sen...

引用

Conference on Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVIII

作者： Fernandeza, Juan Pablo Barrowes, Benjamin O'Neill, Kevin Shamatava, Irma Shubitidze, Fridon Dartmouth Coll Thayer Sch Engn Hanover NH 03755 USA

ISBN: (纸本)9780819495006

The Portable Decoupled Electromagnetic Induction Sensor (Pedemis) is a new instrument designed to provide diverse, high-quality data for detection and discrimination of unexploded ordnance in rocky, treed, or otherwise forbidding terrain. It consists of a square array of nine transmitters and a similar arrangement of receivers that measure all three vector components of the time-dependent magnetic field at nine different locations. The receiver assembly can be fixed to the transmitters or detached from them for enhanced flexibility and convenience. The latter mode requires a positioning system that finds the location of the receivers with respect to the transmitters at any time without hampering portability or requiring communication with outside agents (which may be precluded by field conditions). The current system examines the primary field during the transmitters' on-time phase and optimizes to find the location at which it is most likely to obtain the combination of measured values. We have developed an algorithm that computes mutual inductances analytically and exploits their geometric information to predict location. The method does full justice to Faraday's Law from the start and incorporates the fine structure of both transmitters and receivers;it is exact and involves only elementary functions, making it unnecessary to set up and monitor approximations and guaranteeing robustness and stability everywhere;it uses a fraction of the memory and is orders-of-magnitude faster than methods based on numerical quadrature. We have tested the algorithm on the current Pedemis prototype and have obtained encouraging results which we summarize in this paper.

关键词： Receivers Transmitters Sensors Electromagnetic coupling Electromagnetism algorithm development Data acquisition Inductance Target detection Telecommunications

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：