检索结果-内蒙古大学图书馆

PBTree - A new progressive and hierarchical representation for network-based navigation in densely built urban environments

引用

ANNALS OF TELECOMMUNICATIONS 2005年第11-12期60卷 1394-1421页

作者： Royan, J Bouville, C Gioia, P France Telecom R&D F-35510 Cesson Sevigne France

This paper describes a novel progressive and hierarchical representation for densely built urban areas. It aims at navigating through huge urban environments with network-based client-server systems. Thanks to this method, navigation is no longer limited to walkthrough, but allows flying over the city. This can be achieved through a set of dedicated algorithms allowing the decomposition of city into a multi resolution representation. The method efficiently exploits the fact that automated modelling technologies of urban scenes are generally based on the processing of 2D data (video, photographs, cadastral map,...), to model 2D1/2 data (building footprint, height, altitude,...) which turns out to be more compact. From this pre-computed representation of buildings, the server progressively sends the perceptible details to the client for all the regions visible from a given viewpoint.

关键词： three dimensional model three dimensional representation urban area hypermedia navigation interactive mode multiresolution analysis visualization client-server architecture

来源：评论

学校读者我要写书评

暂无评论

Automated Drug Suggestion Using Machine Learning

Automated Drug Suggestion Using Machine Learning

引用

Future of Information and Communication conference (FICC)

作者： Doma, Vikrant Singh, Sahil Arora, Nikita Ortiz, Gabriel Saran, Parneet Kaur Chavarin, Salvador Pirouz, Matin Calif State Univ Fresno Fresno CA 93740 USA

ISBN: (纸本)9783030394424;9783030394417

The growing healthcare industry generates a large amount of data on patient health conditions, demographic plans, and drugs required for such conditions. These attract the attention of the medical professionals and the data scientists alike. In this paper, we propose a drug recommendation assistant built using machine learning techniques and natural language processing, which draws its accuracy from several major datasets. The proposed system makes it possible to manifest the contrasting effects, reviews, ratings, and then recommend the most "effective" drug for a given individual. The results of the predictive analysis were that from 2005-2015, between the ages 55 and 80, the death rates of the top deadliest diseases in the U.S. all increased drastically. Based on the current trends, with some level of accuracy, it is possible to predict the next top five medical conditions (Birth Control, Depression, Pain, Anxiety, Acne) which will be prevalent in the near future and the top five drugs for used to treat them.

关键词： Drug recommendation Confusion matrix data visualization data manipulation

来源：评论

学校读者我要写书评

暂无评论

Validation of 3D motion tracking of pulmonary lesions using CT fluoroscopy images for robotically assisted lung biopsy

Validation of 3D motion tracking of pulmonary lesions using ...

引用

Medical Imaging 2005 conference

作者： Xu, S Fichtinger, G Taylor, RH Cleary, K Johns Hopkins Univ Engn Res Ctr Baltimore MD 21218 USA

ISBN: (纸本)0819457183

As recently proposed in our previous work, the two-dimensional CT fluoroscopy image series can be used to track the three-dimensional motion of a pulmonary lesion. The assumption is that the lung tissue is locally rigid, so that the realtime CT fluoroscopy image can be combined with a preoperative CT volume to infer the position of the lesion when the lesion is not in the CT fluoroscopy imaging plane. In this paper, we validate the basic properties of our tracking algorithm using a synthetic four-dimensional lung dataset. The motion tracking result is compared to the ground truth of the four-dimensional dataset. The optimal parameter configurations of the algorithm are discussed. The robustness and accuracy of the tracking algorithm are presented. The error analysis shows that the local rigidity error is the principle component of the tracking error. The error increases as the lesion moves away from the image region being registered. Using the synthetic four-dimensional lung data, the average tracking error over a complete respiratory cycle is 0.8 mm for target lesions inside the lung. As a result, the motion tracking algorithm can potentially alleviate the effect of respiratory motion in CT fluoroscopy-guided lung biopsy.

关键词： motion estimation real-time tracking robust tracking data association textured regions lung biopsy robotics

来源：评论

学校读者我要写书评

暂无评论

ARGO Black Sea database: storage and visualization 9

ARGO Black Sea Database: storage and visualization

引用

9th International conference on Remote Sensing and Geoinformation of the Environment, RSCy 2023

作者： Zhuk, Elena Marine Hydrophysical Institute Russian Academy of Science Russia

ISBN: (纸本)9781510668225

The goal of this study is to develop a Black Sea regional online marine database access interface for ARGO profiles. Due to its exclusive focus on the ARGO data profiles gathered in the Black Sea, the ARGO Black Sea online web database offers quicker and simpler data access compared to the traditional full-functional ARGO data portals, https://***/ and https://***/.The ARGO datasets were obtained between 2005 and 2021 and include profiles gathered from 42 ARGO floats from the free ARGO data access portals. The Black Sea ARGO profiles database was organized to keep meta data and data separately, and such a technique provides the functionality to optimize the search and the visualization of the data. Postgresql was selected as the database management system. The user interface (UI) for online data access was created utilizing the map services mapbox gl and jQuery. The Interface enables users to select the ARGO floats trajectories see the ARGO data profiles, download specific data profiles in ODV format, and pick ARGO floats trajectories using the ARGO ID from the relevant list that is readily available. A special software module was developed to enable automatic populating of database tables. The program reads, distributes, and stores data in the database in netCDF and csv formats. It also verifies that no double data rows are present. The Black Sea ARGO database can be used as a tool for statistical analysis of the marine ecosystems and sea currents, taking into account the trajectories of the ARGO floats as sea current tracers. It can also be used as a user-friendly data access interface to view the data. © 2023 SPIE.

关键词： database systems

来源：评论

学校读者我要写书评

暂无评论

Monitoring cache behavior on parallel SMP architectures and related programming tools

引用

FUTURE GENERATION COMPUTER SYSTEMS-THE INTERNATIONAL JOURNAL OF GRID COMPUTING AND ESCIENCE 2005年第8期21卷 1298-1311页

作者： Brandes, T Schwamborn, H Gerndt, M Jeitner, J Kereku, E Schulz, M Brunst, H Nagel, W Neumann, R Müller-Pfefferkorn, R Trenkler, B Karl, W Tao, J Hoppe, HC Fraunhofer Gesellsch FhG Inst Algorithmen & Wissensch Rechnen SCAI D-53754 At Augustin Germany Tech Univ Munich LRR D-85748 Garching Germany Tech Univ Dresden Zentrum Hochleistungsrechnen ZHR D-01062 Dresden Germany Univ Karlsruhe Inst Rechnerentwurf & Fehlertoleranz D-76128 Karlsruhe Germany Intel GmbH Software & Solut Grp D-50321 Bruhl Germany

This paper describes the ideas and developments of the project EP-CACHE. Within this project new methods and tools are developed to improve the analysis and the optimization of programs for cache architectures, especially for SMP clusters. The tool set comprises the semi-automatic instrumentation of user programs, the monitoring of the cache behavior, the visualization of the measured data, and optimization techniques for improving the user program for better cache usage. As current hardware performance counters do not give sufficient user relevant information, new hardware monitors are designed that provide more detailed information about the cache utilization related to the data structures and code blocks in the user program. The expense of the hardware and software realization will be assessed to minimize the risk of a real implementation of the investigated monitors. The usefulness of the hardware monitors is evaluated by a cache simulator. (c) 2004 Published by Elsevier B.V.

关键词： hardware cache monitoring performance analysis cache optimizations parallel programming tools SMP cluster

来源：评论

学校读者我要写书评

暂无评论

Unsteady nozzle design for pulse detonation engines

Unsteady nozzle design for pulse detonation engines

引用

41st AIAA/ASME/SAE/ASEE Joint Propulsion conference and Exhibit

作者： Owens, Zachary C. Hanson, Ronald K. Stanford University Stanford CA 94305 United States Aeronautics and Astronautics Building 520 Stanford CA 94305 United States Department of Mechanical Engineering Building 520 Stanford CA 94305 United States

A quasi-one-dimensional, Euler model with detailed finite-rate chemistry is used to conduct a parametric assessment of area ratio effects on the performance of unsteady nozzles in a pulse detonation engine (PDE). Using results from the parametric study, design criteria are suggested for evaluating optimal contraction and expansion nozzle area ratios. In particular, a method using simple isentropic analysis is revealed for identifying optimal expansion area ratio for a given tube configuration. To validate the parametric analysis, three nozzle sections are tested in the Stanford experimental PDE facility. Time resolved thrust and specific impulse (Isp) measurements are made for each nozzle and compared to simulated results. Additionally, Schlieren imaging is used to investigate the blowdown gasdynamics in each of the three nozzles. Comparisons between simulated and measured impulse data are addressed using insights gathered from the flow visualization. Resulting analysis indicates that multi-dimension wave phenomena are important for nozzles with converging sections. Over-prediction of Isp by the model is attributed to an inability to accurately capture the pressure in the plateau region, as well as the inability to accurately model the DDT process. The relative contribution of each of these effects is quantified. Experimental measurements validate trends observed in the parametric study and reveal that an appropriately optimized diverging nozzle produces the largest single-cycle Isp augmentation. The applicability of single-pulse results to realistic multi-cycle engines is discussed, with emphasis on the importance of maintaining high reactant fill pressure between multi-pulse cycles. To this effect, the inclusion of a minimal throat section is addressed as a plausible solution despite its deleterious impact on single-cycle performance.

关键词： data visualization

来源：评论

学校读者我要写书评

暂无评论

Annual Meeting of the Association of American Geographers, 2005

Annual Meeting of the Association of American Geographers, 2...

引用

Annual Meeting of the Association of American Geographers, 2005

ISBN: (纸本)9783642375323

The proceedings contain 25 papers. The special focus in this conference is on American Geographers. The topics include: Geographic hypermedia;design issues associated with discrete and distributed hypermedia gis;using data from earth orbiting satellites in geo-hypermedia applications;exploring the use of a virtual map shop as an interface for accessing geographical information;atlases from paper to digital medium;hypermedia maps and the internet;in pursuit of usefulness: resetting the design focus for mobile geographic hypermedia systems;merging hypermedia gis with spatial on-line analytical processing;a hypermedia afghan sites and monuments database;towards the development of open cartographic hypermedia systems;standards for geographic hypermedia: mpeg, ogc and co.;semantically-aware systems;towards a typology of interactivity functions for visual map exploration;a framework for using coordinated displays for the analysis of multidimensional, spatial, and temporal data;visualization and hypermedia for decision making;geovisualization of vegetation patterns in national parks of the southeastern united states;visualization of spatial change;scalable vector graphics interfaces for geographic applications;about the role of cartographic presentation for wayfinding;wireless campus lbs: building campus-wide location based services based on wifi technology;developing web-gis applications according to hci guidelines;high definition geovisualization;mobile geographic education.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Hotspots and Frontiers of Chinese Consumers' Online Shopping Willingness - visualization analysis of Bibliometrics Based on CSSCI (2005-2019) 1

Hotspots and Frontiers of Chinese Consumers' Online Shopping...

引用

1st International conference on Computer Applied Science and Information Technology, ICCASIT 2020

作者： Zu, Xu Gou, Qingxin Duan, Renji Guo, Yunfeng Zhang, Zhengjie Business School Sichuan Agricultural University Chengdu611830 China

In order to objectively reflect the development status and hotspots of research on consumers' online shopping willingness, this article uses the relevant literature included in CSSCI as a data source, and uses Citespace software to visually analyze research results related to consumers' online shopping willingness. The main authors and institutions, research hotspots and the frontiers of the context are discussed. It is found that the research on consumers' online shopping willingness is currently in the development stage, which mainly focuses on the hot topics such as perceived risk, perceived value, trust, and on the cutting-edge content such as online shopping willingness of fresh produce and e-commerce marketing models. © 2020 Published under licence by IOP Publishing Ltd.

关键词： data visualization

来源：评论

学校读者我要写书评

暂无评论

Discovering changing demographics in the canadian census using data analysis 33

Discovering changing demographics in the canadian census usi...

引用

33rd International conference on Computers and Their Applications, CATA 2018

作者： Anderson, Brett El-Hajj, Mohamad Kipp, Zachary Staples, Jack Department of Computer Science MacEwan University EdmontonABT5J 2P2 Canada

ISBN: (纸本)9781943436101

The 2015 Canadian census data has been released on a graduated schedule throughout 2017, offering new opportunities to research the many demographics of the country. In this paper, data analytic techniques are used to examine the Income, Ethnicity, Marriage, and Language datasets available to the public through Statistics Canada. Insights into where Canada has changed over the past decade are studied by comparing the 2005 and 2015 population information that is available within those datasets. With data mining techniques like linear regression, decision trees, and visualization we explore the available demographics and examine the characteristics that define areas which have seen significant growth or decline over the past ten years. From looking at income there were strong correlations between gender and the distribution of the wealth, as well as age having a high positive correlation with wealth. When looking at ethnicity, there was a strong correlation between marital status and the ethnicity present in that locations as well as the other ethnicities that would be found in that location. Copyright ISCA, CATA 2018.

关键词： data mining

来源：评论

学校读者我要写书评

暂无评论

The GIS system for the Yunnan soil quality data management and analysis

The GIS system for the Yunnan soil quality data management a...

引用

2nd conference on Environmental Science and Information Application Technology, ESIAT 2010

作者： Liu, Liu Zhang, Yufeng Ma, Panhua Liu, Sicong Lu, Wen Electronic Engineering Department School of Information Science and Engineering Kunming 650091 China

ISBN: (纸本)9781424473885

Soil is one of the fundamental elements of human life. However, the growing situation of soil pollution has threatened the ecological balance of terrestrial animals and plants. In order to protect the soil environment, Yunnan Province launched a province-wide soil pollution survey. Until now the statistics and evaluation procession of the sample data has been implemented and a series of valuable results have been obtained. Based on Visual Studio as development platform, ArcEngine as embedded development component, C# as the developing language, SQL Server 2005 as the database, a system is set up to reveal the spatial relationship, distribution patterns and development trends among these results. It provides the functions of information input, maintenance, retrieval, spatial analysis, thematic mapping, etc... By using this system, the integrated management and correlation between the spatial and attribute information are demonstrated in visualization method. ©2010 IEEE.

关键词： Information management

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：