检索结果-内蒙古大学图书馆

您好，读者！请登录

内蒙古大学图书馆

首页
概况
党建
资源
服务
科研支持
- 论文收录引用证明
- 科技查新
知识产权
档案馆
帮助

咨询与建议

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

您的常用邮箱：*

您的手机号码：*

问题描述：

当前已输入0个字，您还可以输入200个字

全部搜索
期刊论文
图书
学位论文
标准
纸本馆藏
外文资源发现
数据库导航
超星发现

高级检索

时间限定

出版年份：

文献类型

图书期刊文献学位论文多媒体

馆藏选择

电子馆藏纸本馆藏

核心期刊

全部期刊 SCI 收录期刊 SSCI 收录期刊 EI 收录期刊 CSCD 收录期刊 CSSCI 收录期刊

语言

中文英文

文献类型

期刊文献图书学位论文标准纸本馆藏

帮助

文字说明：

T=题名（书名、题名），A=作者（责任者），K=主题词，P=出版物名称，PU=出版社名称，O=机构（作者单位、学位授予单位、专利申请人），L=中图分类号，C=学科分类号，U=全部字段，Y=年（出版发行年、学位年度、标准发布年）

检索规则说明：

AND代表“并且”；OR代表“或者”；NOT代表“不包含”；(注意必须大写,运算符两边需空一格)

检索范例：

范例一：(K=图书馆学 OR K=情报学) AND A=范并思 AND Y=1982-2016
范例二：P=计算机应用与软件 AND (U=C++ OR U=Basic) NOT K=Visual AND Y=2011-2016

分类表

所选分类

>> <<

限定检索结果

文献类型

58 篇 会议

馆藏范围

58 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

56 篇 理学
- 56 篇 物理学
47 篇 工学
- 35 篇 材料科学与工程（可...
- 12 篇 电气工程
- 8 篇 测绘科学与技术

主题

6 篇 security
5 篇 cctv
5 篇 surveillance
4 篇 behavior analysi...
4 篇 optical limiting
4 篇 tracking
3 篇 liquid explosive...
3 篇 threat
3 篇 action recogniti...
3 篇 airport security
3 篇 electromagnetic ...
3 篇 near infrared
2 篇 explosives detec...
2 篇 biosensors
2 篇 reflectance
2 篇 polydimethylsilo...
2 篇 ammonia
2 篇 security applica...
2 篇 adsorption
2 篇 environment

机构

4 篇 vsb tech univ os...
3 篇 tno nl-2597 ak t...
3 篇 univ politehn bu...
2 篇 nicolaus coperni...
2 篇 vsb tech univ os...
2 篇 univ sains malay...
2 篇 us air force res...
2 篇 vsb tech univ os...
2 篇 tno oude waalsdo...
1 篇 tno nl-2597 the ...
1 篇 ctr biolog secur...
1 篇 tech univ ostrav...
1 篇 univ sao paulo i...
1 篇 osaka univ grad ...
1 篇 osaka univ grad ...
1 篇 enea diagnost & ...
1 篇 univ padua instm...
1 篇 finnish natl def...
1 篇 vicarvision nl-1...
1 篇 vsb tech univ os...

作者

5 篇 nedoma jan
5 篇 baan jan
5 篇 bouma henri
5 篇 fajkus marcel
4 篇 novak martin
4 篇 vasinek vladimir
4 篇 burghouts gertja...
3 篇 krupka o.
3 篇 dijk judith
3 篇 van rest jeroen ...
3 篇 eendebak pieter ...
3 篇 itozaki hideo
3 篇 nedoma j.
3 篇 martinek radek
3 篇 smokal v.
3 篇 fajkus m.
3 篇 sato-akaba hideo
2 篇 aga r. s.
2 篇 den hollander ri...
2 篇 van zon kasper

语言

58 篇 英文

检索条件"任意字段=Conference on Optical Materials and Biomaterials in Security and Defence Systems Technology IX"

共 58 条记录，以下是31-40 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

Multi-channel Thermal Infrared Communications using Engineered Blackbody Radiation for security Applications 10

Multi-channel Thermal Infrared Communications using Engineer...

引用

conference on Optics and Photonics for Counterterrorism, Crime Fighting, and defence X and optical materials and biomaterials in security and defence systems technology XI

作者： Hu, F. Liang, X. Lucyszyn, S. Univ London Imperial Coll Sci Technol & Med Ctr Terahertz Sci & Engn Dept EEE London SW7 2AZ England

ISBN: (纸本)9781628413168

The thermal (emitted) infrared frequency bands, typically from 20-40 THz and 60-100 THz, are best known for applications in thermography, such as target acquisition, surveillance, night vision, and remote sensing. This unregulated part of the spectral range offers opportunities for the development of short-range secure communications. The `THz Torch' concept was recently demonstrated by the authors. This technology fundamentally exploits engineered blackbody radiation, by partitioning thermally-generated spectral noise power into pre-defined frequency channels. The energy in each channel is then independently pulse-modulated, transmitted and detected, creating a robust form of short-range secure communications in the far/mid infrared. In this paper, recent progress for the 'THz Torch' technology will be presented;the physical level integrity for multichannel proof-of-concept working demonstrators will be evaluated. By exploring a diverse range of methods, significant enhancements to both data rate and distance can be expected. Our thermodynamics-based approach represents a new paradigm in the sense that 19th century physics can be exploited with 20th century multiplexing concepts for low-cost 21st century ubiquitous security and defence applications in the thermal infrared range.

关键词： 'THz Torch' technology thermal infrared wireless communications frequency division multiplexing frequency-hopping spread-spectrum

来源：评论

学校读者我要写书评

暂无评论

optical biosensor system for the quick and reliable detection of virus infections - VIROSENS 10

Optical biosensor system for the quick and reliable detectio...

引用

conference on Optics and Photonics for Counterterrorism, Crime Fighting, and defence X and optical materials and biomaterials in security and defence systems technology XI

作者： Proll, Guenther Hartjes, Anja Sinclair, Alexander Markovic, Goran Proell, Florian Patel, Pranav Niedrig, Matthias Biametrics GmbH Morgenstelle 18 D-72076 Tubingen Germany Ctr Biolog Secur Robert Koch Inst D-13353 Berlin Germany

ISBN: (纸本)9781628413168

Viral infections are of special threat because they can induce severe courses of disease but only few medical treatments are available. Because of socio-economic and climate changes, increased worldwide mobility and population growth, the risk of newly occurring and quickly spreading viral pathogens has increased. A diagnosis of these diseases at an early stage is essential for a quick risk assessment and a proper health management as well as patient's treatment in an optimal way. Currently, the diagnosis of such diseases is based on time consuming and costly detection methods that can only be performed by specially trained personnel in laboratories at specific security levels. Aim of the project VIROSENS is the development of a biosensor platform that can specifically detect virus particles as well as virus-specific antibodies out of biological matrices like blood, serum, plasma and other body fluids. For this purpose, a disposable cartridge for such antibody- and virus-arrays is designed and developed within the project. The optical detection of viruses is performed with a portable device that will be benchmarked and evaluated concerning currently used standard detection methods in terms of its analytical performance. Within this project, a novel combination of serological tests and direct detection of virus particles will be developed, which will provide faster and more reliable results than presently available and used test systems.

关键词： VIROSENS label-free detection direct test format infectious disease virus serology

来源：评论

学校读者我要写书评

暂无评论

Automatic detection of suspicious behavior of pickpockets with track-based features in a shopping mall 10

Automatic detection of suspicious behavior of pickpockets wi...

引用

conference on Optics and Photonics for Counterterrorism, Crime Fighting, and defence X;and optical materials and biomaterials in security and defence systems technology XI

作者： Bouma, Henri Baan, Jan Burghouts, Gertjan J. Eendebak, Pieter T. van Huis, Jasper R. Dijk, Judith van Rest, Jeroen H. C. TNO NL-2597 AK The Hague Netherlands

ISBN: (纸本)9781628413168

Proactive detection of incidents is required to decrease the cost of security incidents. This paper focusses on the automatic early detection of suspicious behavior of pickpockets with track-based features in a crowded shopping mall. Our method consists of several steps: pedestrian tracking, feature computation and pickpocket recognition. This is challenging because the environment is crowded, people move freely through areas which cannot be covered by a single camera, because the actual snatch is a subtle action, and because collaboration is complex social behavior. We carried out an experiment with more than 20 validated pickpocket incidents. We used a top-down approach to translate expert knowledge in features and rules, and a bottom-up approach to learn discriminating patterns with a classifier. The classifier was used to separate the pickpockets from normal passers-by who are shopping in the mall. We performed a cross validation to train and evaluate our system. In this paper, we describe our method, identify the most valuable features, and analyze the results that were obtained in the experiment. We estimate the quality of these features and the performance of automatic detection of (collaborating) pickpockets. The results show that many of the pickpockets can be detected at a low false alarm rate.

关键词： Surveillance CCTV security behavior analysis threat recognition action recognition tracking

来源：评论

学校读者我要写书评

暂无评论

Growth and study of nonlinear optical materials for frequency conversion devices with applications in defence and security 10

Growth and study of nonlinear optical materials for frequenc...

引用

conference on Optics and Photonics for Counterterrorism, Crime Fighting, and defence X and optical materials and biomaterials in security and defence systems technology XI

作者： Tassev, V. Snure, M. Vangala, S. Kimani, M. Peterson, R. Schunemann, P. Air Force Res Lab Sensors Directorate Wright Patterson AFB OH 45433 USA Solid State Sci Corp Hollis NH 03049 USA BAE Syst Nashua NH 03061 USA

ISBN: (纸本)9781628413168

A series of nonlinear materials including GaAs, GaP, and ZnSe have been examined to determine their suitability for non-linear frequency conversion devices (FCD) and more specifically their use as high power, compact and broadly tunable IR and THz sources for defense and security applications. The more mature GaAs was investigated to reveal the causes for the optical losses that restrict achievement of higher conversion efficiency in quasi-phasematched FCD, while the efforts with GaP were oriented in developing simple, cost effective techniques for fabrication of orientation patterned (OP) templates and optimizing the subsequent thick HVPE growth on these templates. Thus, average growth rates of 50-70 mu m/h were achieved in up to 8-hour long experiments. High optical layer quality was achieved by suitable control of the process parameters. The optimal orientation of the pattern was determined and used as essential feedback aiming to improve the template preparation. This led to the production of the first 300-400 mu m thick device quality OPGaP. Efforts to suppress the parasitic nucleation during growths with longer duration or to achieve thicker layers by a 2 step growth process were also made. The main challenge with the newer candidate, OPZnSe, was to establish suitable regimes for hydrothermal growth on plain (001) ZnSe seeds grown by chemical vapor deposition. Two different temperature ranges, 330-350 degrees C and 290-330 degrees C, were investigated. The mineralized concentration was also manipulated to accelerate the growth in (111) direction and, thus, to improve the growth in (001) direction. The next material in the line is GaN. The traditional HVPE approach will be combined with a growth at low reactor pressure. Growths will be performed in the next sequence: growth on thin GaN layers grown by MOCVD on sapphire wafers, growth on half-patterned GaN templates with different orientations and, finally, growth on OPGaN templates.

关键词： hydride vapor phase epitaxy nonlinear optical materials quasi-phase matching orientation patterned templates frequency conversion devices laser sources in the mid IR and THz region

来源：评论

学校读者我要写书评

暂无评论

Fusion of optical flow based motion pattern analysis and silhouette classification for person tracking and detection 10

Fusion of optical flow based motion pattern analysis and sil...

引用

conference on Optics and Photonics for Counterterrorism, Crime Fighting, and defence X and optical materials and biomaterials in security and defence systems technology XI

作者： Tangelder, Johan W. H. Lebert, Ed Burghouts, Gertjan J. van Zon, Kasper den Uyl, Marten J. VicarVision Singel 160 NL-1015 AH Amsterdam Netherlands TNO NL-2597 The Hague Netherlands

ISBN: (纸本)9781628413168

This paper presents a novel approach to detect persons in video by combining optical flow based motion analysis and silhouette based recognition. A new fast optical flow computation method is described, and its application in a motion based analysis framework unifying human tracking and detection is outlined. Our optical flow algorithm represents optical flow by grid based motion vectors, which are computed very efficiently and robustly applying template matching. We model the motion patterns of the tracked human and non-human objects by the positions, velocities, motion magnitudes, and motion directions of their optical flow vectors, and build a random forest on these features. For recognition, the random forest computes a normalized score measuring the similarity of a track to a human track. Using edge detection on a motion image for each motion blob its silhouette is computed. Recognition scores are computed, which measure the similarity of the silhouettes with human silhouettes. The optical flow classifier and the silhouette classifier are used as a combined classifier. We analyze the ROC curve to set different decision thresholds on the recognition score for different scenarios. The experiments on the VIRAT test set demonstrate that for human detection the combination of the optical flow based motion method with one based on human silhouette analysis, obtains superior results, compared to the constituent methods.

关键词： optical flow based motion analysis silhouette based recognition behavior recognition similarity measures combined classifier VIRAT dataset ROC curve analysis

来源：评论

学校读者我要写书评

暂无评论

Track-based event recognition in a realistic crowded environment 10

Track-based event recognition in a realistic crowded environ...

引用

conference on Optics and Photonics for Counterterrorism, Crime Fighting, and defence X and optical materials and biomaterials in security and defence systems technology XI

作者： van Huis, Jasper R. Bouma, Henri Baan, Jan Burghouts, Gertjan J. Eendebak, Pieter T. den Hollander, Richard J. M. Dijk, Judith van Rest, Jeroen H. C. TNO NL-2597 AK The Hague Netherlands

ISBN: (纸本)9781628413168

Automatic detection of abnormal behavior in CCTV cameras is important to improve the security in crowded environments, such as shopping malls, airports and railway stations. This behavior can be characterized at different time scales, e.g., by small-scale subtle and obvious actions or by large-scale walking patterns and interactions between people. For example, pickpocketing can be recognized by the actual snatch (small scale), when he follows the victim, or when he interacts with an accomplice before and after the incident (longer time scale). This paper focusses on event recognition by detecting large-scale track-based patterns. Our event recognition method consists of several steps: pedestrian detection, object tracking, track-based feature computation and rule-based event classification. In the experiment, we focused on single track actions (walk, run, loiter, stop, turn) and track interactions (pass, meet, merge, split). The experiment includes a controlled setup, where 10 actors perform these actions. The method is also applied to all tracks that are generated in a crowded shopping mall in a selected time frame. The results show that most of the actions can be detected reliably (on average 90%) at a low false positive rate (1.1%), and that the interactions obtain lower detection rates (70% at 0.3% FP). This method may become one of the components that assists operators to find threatening behavior and enrich the selection of videos that are to be observed.

关键词： Surveillance CCTV security tracking behavior analysis action recognition threat

来源：评论

学校读者我要写书评

暂无评论

COMPLEX OF THE NEW GENERATION OF THE INSTRUMENTAL ANALYTICAL APPROACHES TO PREVENT DANGEROUS BIOTERORISM 10

COMPLEX OF THE NEW GENERATION OF THE INSTRUMENTAL ANALYTICAL...

引用

conference on Optics and Photonics for Counterterrorism, Crime Fighting, and defence X and optical materials and biomaterials in security and defence systems technology XI

作者： Starodub, Nickolaj F. Shavanova, Kateryna Karpiuk, Andrii Natl Univ Life & Environm Sci Ukraine UA-03041 Kiev Ukraine

ISBN: (纸本)9781628413168

The real manifestations of biowarfare were only during local military conflicts. In previous times the danger with this factor forms through activation of terrorist organizations. To prevent non-desirable consequences and to preserve the lives and health of people it is necessary to provide constant control by the application of complex of the new generation of the instrumental devices based on the principles of biosensorics which allow rapid revealing step by step: total toxicity of environmental objects, presence of appropriate groups and specific chemical substances among them. It is demonstrated simple and rapid estimation of the total toxicity through the control of the intensity of chlorophyll fluorescence (IChF) by the direct or remote ways by the device "Floratest" (Ukraine). There is possible on the basis of IChF curve of growing plants from some territory during appropriate period to reveal appearance of toxic substances in this area. Their presence in more local cases may be done by using bioluminescent bacteria (pure Ukrainian strains) or/and controlling short term Daphnia living medium by developed portable chemiluminometer. For the revealing of some groups of toxic elements it is recommended the cerium oxide ISFETs based enzymatic biosensors. The last and devices based on SPR ("Plasmotest", Ukraine), porous silicon (with the registration of biospecific interaction macromolecules by luminescence or electro conductivity) and some nano-metal oxides were realized in immune biosensors at the determination of content of number of mycotoxins, some microorganisms (Salmonella spp.) and diagnostics of viral disease (retroviral leucosis). We present the main characteristics of the above mentioned devices and give confirmation that all the analysis meets practice demands. Overall time of analysis is in range 10 min and it is very simple and may be realized in field conditions.

关键词： Biosensors optical electrochemical nano-structures environment control toxins infection diseases diagnostics

来源：评论

学校读者我要写书评

暂无评论

Optics and Photonics for Counterterrorism, Crime Fighting and defence ix;and optical materials and biomaterials in security and defence systems technology X

Optics and Photonics for Counterterrorism, Crime Fighting an...

引用

2013 conference on Optics and Photonics for Counterterrorism, Crime Fighting and defence

ISBN: (纸本)9780819497703

The proceedings contain 32 papers. The topics discussed include: Raman spectroscopy for the detection of explosives and their precursors on clothing in fingerprint concentration: a reliable technique for security and counter terrorism issues;detection of bottled explosives by near infrared;spatially offset Raman spectroscopy for explosives detection through difficult (opaque) containers;characterization of optically compressing diode array for spectroscopic applications;effective criteria for the identification of substance using the spectral lines dynamics of reflected THz signal;experimental realization of SDA-method for the detection of substance at long distance;and standoff detection of bioaerosols over wide area using a newly developed sensor combining a cloud mapper and a spectrometric LIF lidar.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Usage of cornea and sclera back reflected images captured in security cameras for forensic and card games applications

Usage of cornea and sclera back reflected images captured in...

引用

conference on Optics and Photonics for Counterterrorism, Crime Fighting and defence ix;and optical materials and biomaterials in security and defence systems technology X

作者： Zalevsky, Zeev Ilovitsh, Asaf Beiderman, Yevgeny Bar Ilan Univ Fac Engn IL-52900 Ramat Gan Israel

ISBN: (纸本)9780819497703

We present an approach allowing seeing objects that are hidden and that are not positioned in direct line of sight with security inspection cameras. The approach is based on inspecting the back reflections obtained from the cornea and the sclera of the eyes of people attending the inspected scene and which are positioned in front of the hidden objects we aim to image after performing proper calibration with point light source (e.g. a LED). The scene can be a forensic scene or for instance a casino in which the application is to see the cards of poker players seating in front of you.

关键词： Cornea and sclera back reflection forensic applications card games applications security cameras

来源：评论

学校读者我要写书评

暂无评论

Ammonia detection using optical reflectance from porous silicon formed by metal-assisted chemical etching

Ammonia detection using optical reflectance from porous sili...

引用

conference on Optics and Photonics for Counterterrorism, Crime Fighting and defence ix;and optical materials and biomaterials in security and defence systems technology X

作者： Iatsunskyi, Igor Smyntyna, Valentyn Pavlenko, Mykolai Kanevska, Olga Kirik, Yuliia Myndrul, Valeryi Odessa II Mechnikov Natl Univ Dept Expt Phys UA-65023 Odessa Ukraine

ISBN: (纸本)9780819497703

An impact of morphology on reflectance of porous silicon was investigated. Depending on the metal-assisted chemical etching conditions the macro-micro structures could be formed. The reflectance properties of various porous silicon structures after ammonia adsorption were investigated. It was shown that increasing of ammonia concentration in the measurement chamber leads to an increase of the reflectance. The most sensitive structures for ammonia detection are porous silicon having approximately size of pores - 10-15 mu m. A fast response of porous silicon on the adsorption of ammonia molecules may be used for development of new sensors.

关键词： porous silicon adsorption reflectance metal-assisted chemical etching ammonia

来源：评论

学校读者我要写书评

暂无评论

没有更多数据了...

全选清除本页清除全部题录导出标记到“检索档案”

共6页 << < 1 2 3 4 5 6 > >>

检索报告对象比较合并检索0

隐藏清空

合并搜索

回到顶部

执行限定条件

内容：

评分：

请选择保存的检索档案：

请选择收藏分类：

订阅名称：

通借通还

温馨提示：

图书名称：

借书校区：

取书校区：

手机号码：

邮箱地址：

一卡通帐号：

电话和邮箱必须正确填写，我们会与您联系确认。

联系人：

所在院系：

联系邮箱：

联系电话：

内蒙古自治区呼和浩特市赛罕区大学西街235号邮编: 010021

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：