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

474 篇 会议

馆藏范围

474 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

447 篇 理学
- 434 篇 物理学
- 40 篇 天文学
- 19 篇 数学
- 11 篇 化学
- 7 篇 生物学
- 2 篇 系统科学
- 1 篇 海洋科学
- 1 篇 统计学（可授理学、...
297 篇 工学
- 127 篇 电气工程
- 84 篇 仪器科学与技术
- 40 篇 信息与通信工程
- 38 篇 材料科学与工程（可...
- 29 篇 计算机科学与技术...
- 21 篇 机械工程
- 19 篇 光学工程
- 19 篇 航空宇航科学与技...
- 12 篇 软件工程
- 11 篇 测绘科学与技术
- 8 篇 电子科学与技术（可...
- 7 篇 控制科学与工程
- 6 篇 生物医学工程（可授...
- 4 篇 石油与天然气工程
- 3 篇 力学（可授工学、理...
- 3 篇 化学工程与技术
- 2 篇 交通运输工程
- 1 篇 动力工程及工程热...
54 篇 医学
- 45 篇 临床医学
- 9 篇 特种医学
12 篇 管理学
- 12 篇 管理科学与工程(可...
4 篇 教育学
- 4 篇 教育学

主题

38 篇 optical alignmen...
26 篇 alignment
26 篇 photonics
20 篇 systems modeling
16 篇 data modeling
15 篇 modeling
15 篇 mirrors
15 篇 silicon photonic...
14 篇 optical design
13 篇 image processing
13 篇 3d modeling
12 篇 tolerancing
12 篇 waveguides
12 篇 sensors
12 篇 metrology
11 篇 integrated model...
10 篇 simulation
10 篇 active optics
10 篇 adaptive optics
9 篇 telecommunicatio...

机构

8 篇 chinese acad sci...
6 篇 nasa goddard spa...
5 篇 caltech jet prop...
4 篇 beijing inst spa...
3 篇 caltech jet prop...
3 篇 chinese acad sci...
3 篇 univ arizona col...
3 篇 inaf osservatori...
3 篇 karlsruhe inst t...
3 篇 thirty meter tel...
3 篇 natl univ def te...
3 篇 lawrence livermo...
3 篇 nasa goddard spa...
3 篇 caltech pasadena...
3 篇 nasa glenn res c...
2 篇 ball aerosp & te...
2 篇 alson e hatheway...
2 篇 univ calif san d...
2 篇 amer univ dept p...
2 篇 beijing normal u...

作者

7 篇 leach richard r....
6 篇 awwal abdul a. s...
5 篇 wilhelmsen karl
4 篇 roberts randy
4 篇 nissly carl
4 篇 seo byoung-joon
4 篇 troy mitchell
3 篇 kim daewook
3 篇 lamontagne frede...
3 篇 herman eric
3 篇 yang xiaoxu
3 篇 youngworth richa...
3 篇 knight j. scott
3 篇 rushford michael...
3 篇 wang bo
3 篇 liu hui
3 篇 lowe-webb roger
3 篇 han junfeng
3 篇 bliss erlan s.
3 篇 liu hua

语言

467 篇 英文
7 篇 中文

检索条件"任意字段=Conference on Optical Modeling and System Alignment at SPIE Optics Photonics Conference"

共 474 条记录，以下是361-370 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：

Electromagnetically induced electron transfer between coupled quantum wells

Electromagnetically induced electron transfer between couple...

引用

ICONO 2007 conference

作者： Dubovis, S. A. Basharov, A. M. Moscow Engn Phys Inst Moscow Russia RRC Kurchatov Inst Moscow Russia

ISBN: (纸本)9780819468857

system of two identical quantum wells both containing an energy subband under electromagnetic wave influence is studied, Possibility of controlled electron transfer from energy subband localized in the first quantum well to subband localized in the second one (i.e. charge transfer between two spatially separated wells) is demonstrated. Analytical expressions and numerical estimations in case of two delta-function-wells model are adduced.

关键词： Quantum wells systems modeling Quantum dots Electromagnetic radiation Photons Electromagnetism Chemical species Ionization Nanostructures photonics

来源：评论

学校读者我要写书评

暂无评论

Improved self-protection using dynamically optimized expendable countermeasures - art. no. 65400O

Improved self-protection using dynamically optimized expenda...

引用

conference on optics and photonics in Global Homeland Security III

作者： Hovland, Harald Norwegian Def Res Inst N-2027 Kjeller Norway

ISBN: (纸本)9780819466624

The use of expendable countermeasures is still found to be a viable choice for self protection against Man Portable Air Defense systems (MANPADS) due to their simplicity, low cost, flexibility, recent improvements in decoy technology, the ability to handle multiple threats simultaneously and the off-board nature of these countermeasures. In civil aviation, the risk of general hazards linked to the use of pyrotechnics is the main argument against expendable countermeasures, whereas for military platforms, the limitation in capacity due to a limited number of rounds is often used as an argument to replace expendable countermeasures by laser-based countermeasures. This latter argument is in general not substantiated by modelling or figures of merit, although it is often argued that a laser based system allows for more false alarms, hence enabling a more sensitive missile approach warning system. The author has developed a model that accounts for the statistical effects of running out of expendable countermeasures during a mission, in terms of the overall mission survival probability. The model includes key parameters of the missile approach warning system (MAWS), and can handle multiple missile types and missile attack configurations, as well as various statistical models of missile attacks. The model enables quantitative comparison between laser based and expendable countermeasures, but also a dynamic optimization of the countermeasures in terms of whether to use small or large countermeasure programs, as well as the dynamic tuning of MAWS key parameters to optimize the overall performance. The model is also well suited for determination of the contributions of the different components of the system in the overall survival probability.

关键词： countermeasures MANPADS optimization modeling survival probability

来源：评论

学校读者我要写书评

暂无评论

Integrated optical interconnections on printed circuit boards

Integrated optical interconnections on printed circuit board...

引用

conference on photonics Packaging, Integration, and Interconnects VII

作者： Riester, Markus Langer, Gregor Leising, Gunther AT&S Austria Technol & Syst Tech AG Fabriksgasse 13 A-8700 Leoben Austria Joanneum Res Inst Nanostruct Mat & Photon A-8160 Weiz Austria

ISBN: (纸本)9780819465917

The development of integrated optical interconnections (IOIs) represents a quantum leap for the functionality of printed circuit boards (PCBs). This new technology will allow highly complex product features and hence, higher product added value. PCBs with optical interconnections will be used where applications call either for very high data streams between components, modules or functional units (e.g. backplanes or multiprocessor boards) or for a space-saving design for interconnection paths (e.g. mobile applications). We discuss the different approaches towards integrating optical waveguides into PCBs and analyze the prerequisites for a transfer to a product. Application scenarios for different markets are presented and steps proposed for required action to deliver solutions that can be driven into a market. In a second section a new and innovative concept for the integration of an optical interconnection system in PCBs is presented. This revolutionary concept is highly supporting the worldwide trend towards miniaturization of not only electronic but also optoelectronic systems in PCBs. The alignment of the optoelectronic components to the waveguides has been addressed by this concept. It is shown that the process will allow the tolerances incurred in the manufacturing processes to be dealt with in a separate process step, allowing existing standard methods for the production of electronic interconnection systems to be used.

关键词： optical circuit printed circuit board two-photon absorption miniaturization passive alignment embedding technology

来源：评论

学校读者我要写书评

暂无评论

Silicon photonics packaging : characterization of a waveguide grating coupler and modeling of the fiber coupling ratio

Silicon photonics packaging : characterization of a waveguid...

引用

conference on photonics Packaging, Integration, and Interconnects VII

作者： Kopp, Christophe Gilbert, Karen Grosse, Philippe Fedeli, Jean-Marc CEA LETI Minatec 17 Rue des Martys Grenoble 38054 France

ISBN: (纸本)9780819465917

The main issue for a fiber coupling structure with a nanophotonic circuit is of course to reach very low insertion losses. However, another major issue is the polarization sensitivity as optical networks usually use non polarization maintaining optical fibers. Therefore, to implement a nanophotonic circuit into optical networks, the fiber coupling structures must have a very low polarization sensitivity, especially concerning the coupling from the fiber towards the circuit. Surface grating couplers are very interesting fiber coupling structures as they allow for coupling anywhere on a circuit without the need for cleaving and polishing facets. which makes wafer-scale testing of photonic circuits possible. However, one-dimensional gratings couplers are well-known to be polarization sensitive. In this paper, we show that a one-dimensional grating may have very similar coupling performances for TE and TM polarizations. Only the optimal injection angle may still differ between TE and TM polarizations. Therefore, packaging consideration is discussed to design an optical coupling system between the fiber and the grating coupler which should allow the optimization of the incident angle for both fundamental polarized modes. This way a low polarization sensitive coupler using a simple one-dimensional grating coupler is proposed.

关键词： silicon photonics packaging photonics circuit grating coupler fiber coupling

来源：评论

学校读者我要写书评

暂无评论

3.2Gbps multi-channel optical backplane bus demonstrator using photopolymer volume gratings

3.2Gbps multi-channel optical backplane bus demonstrator usi...

引用

conference on photonics Packaging, Integration, and Interconnects VII

作者： Bi, Hai Choi, Jinho Jiang, Wei Han, Xuliang Ellis, Jonathan Chen, Ray T. Univ Texas Austin Dept ECE Austin TX 78758 USA Brewer Sci Inc Rolla MO 65401 USA Adv Commun Concepts Inc Austin TX USA

ISBN: (纸本)9780819465917

A 3-slot optical backplane bus demonstrator based on glass substrate with photopolymer volume gratings array (PVGA) on top surface is built to allow 16 channels of data to be broadcast from central slot to two daughter slots or uploaded from any daughter slot to central slot. VCSELs and photodetectors packaged in the form of TO-46 can are assembled on top of each PVG and interleaved to reduce the crosstalk to below noise level. By carefully aligning the fabrication system, the incident angle deviation from Bragg condition is reduced to below 0.1 degrees to maximize optical power delivery. The orientation and period of hologram fringes are uniform in the active area by collimating recording beams. Above 4.8Gbps aggregated data transmission is successfully demonstrated using the multi-channel system. Three computer mother boards using FPGA are made to verify the data transmission among the slots. Interface boards between the FPGA boards and optical transceivers are designed and fabricated to separate the implementation of digital layer and optical layer. Single channel transmissions with 3.2Gbps and even 10Gbps data rate are also tested with above 100uW input power, showing the potential to improve the total two-way bandwidth to above 102.4Gbps. alignment tolerance of the optical interconnect system is investigated theoretically and experimentally. By analyzing the diffractive characteristics, the bandwidth limit of the optical layer is determined to be in the order of Terahertz. Design and fabrication issues are discussed for future optical backplane bus to make terahertz bandwidth into reality. Based on the experiments for Bit-interleaved optical Backplane bus and Multi-channel optical backplane bus demonstrators, theoretical analysis of the bandwidth limit of the optical backplane bus using photopolymer volume gratings has been carried out.

关键词： optical backplane bus optical interconnect multi-channel photopolymer volume gratings

来源：评论

学校读者我要写书评

暂无评论

The Houston ship channel physical security - A case study

The Houston ship channel physical security - A case study

引用

conference on optics and photonics in Global Homeland Security III

作者： Le, Han Q. Bellamy, P. A. Pei, S. S. S. Univ Houston SW Publ Safety Technol Ctr Houston TX 77204 USA Univ Houston Dept Elect & Comp Engn Photon Device & Syst Lab Houston TX 77204 USA Univ Houston Texas Ctr Adv Mat Houston TX 77204 USA

ISBN: (纸本)9780819466624

The Houston Ship Channel (HSC) is a 50-mile long shipping channel that contains many private ports including the Port of Houston Authority. It has a uniquely critical role with respect to the US petroleum energy supply. The HSC security is currently planned for significant enhancement under the auspices of the Harris County and the Houston-based Port Strategic Security Council. The ultimate objective is to comprehensively address the HSC threat matrix. This paper describes the technical effort in support of this program. The HSC security is a complex system of systems that includes the physical control access system, the command, control, communication, and information (C4I) system, and the telecom infrastructure. The strategy is to coordinate the improvements of different components to achieve a high-impact net effectiveness. A key element is a planned high-capacity backbone optical network for integrating the C4I of many different HSC administrative-jurisdictional authorities, which will allow unified situational awareness for a more effective cooperation and coordination. Enhancement of surveillance and intrusion protection is crucial. A feasibility study was conducted for the HSC assuming common surveillance technologies including visible/IR camera, radar, and sonar. The method includes survey and theoretical modeling to detect threats of concern in the HSC natural environment. The result indicates that the HSC unique river-like geography offers both advantages and challenges. The narrow channel allows ease of waterside surveillance, but likely incurs high cost for its great length. In addition, landside security is also important owing to its location amidst urban-industrial zone. Lastly, limitation of the various technologies is discussed by considering the broader challenges of the intrusion problem.

关键词： port security shipping lane security houston ship channel intrusion detection surveillance system of systems sensor network

来源：评论

学校读者我要写书评

暂无评论

modeling of potentiometric sensors sensitive to ions of valency one and two for possible applications in WARMER project - art. no. 69372I

Modeling of potentiometric sensors sensitive to ions of vale...

引用

conference on photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2007

作者： Ogrodzki, Jan Warsaw Univ Technol Warsaw Poland

ISBN: (纸本)9780819471246

This paper presents a novel model of potentiometric sensors sensitive to ions of valency one and two such as H+, K+, Na+, NH4+, Mg+, SO4-, NO3-, Cl- appearing in environmental water resources. The proposed models are based on the physical description by Van den Berg and behavioral description by Nikolsky and Eisenmann for ion-selective membranes. The elaborated models are applicable for data fusion algorithms which may be useful in the EU FP6 WARMER project dedicated to a system for water pollution risk management.

关键词： potentiometric sesnsors sensor models Nikolsky and Eisenman models

来源：评论

学校读者我要写书评

暂无评论

Optoelectronic packaging for 16-channel optical backplane bus with VHOEs

Optoelectronic packaging for 16-channel optical backplane bu...

引用

conference on Optoelectronic Integrated Circuits IX

作者： Choi, J. H. Bi, H. Ellis, J. Chen, R. T. Univ Texas Austin Microelect Res Ctr Dept Elect & Comp Engn Austin TX 78712 USA Adv Commun Concepts Inc Austin TX 78712 USA

ISBN: (纸本)9780819465894

A novel 16-channel optical backplane bus with volume holographic optical elements (VHOEs), operating as diffraction grating beam alignment guides, was designed and fabricated for a high-performance computing system multi-slot bus. These thin film VHOEs were fabricated to diffract light beams for each bus slot into a glass wave-guiding plate (refractive index 1.52) for total internal reflection to other slot positions. Slot-to-slot optical alignment issues, including channel crosstalk and beam alignment tolerances, were computer modeled to optimize a low cost and simple optical packaging structure. For each slot position, a 4 X 8 element optical packaging plate was then fabricated to allow insertion of 16 VCSELs and 16 Photodiodes, each in an individual TO-46 can. Through the VHOE, the slot-to-slot fan-out received beam intensities were experimentally measured for each of the 16 channels and found to be in the range of 90 mu W similar to 150 mu W. This 90 mu W minimum fan-out power is 5dB greater than the receiver sensitivity requirement. In this study, the maximum 10 Gbps single channel bandwidth was tested and a 1.6 Gbps aggregate bandwidth was also demonstrated through a three slot 16-channel optical backplane bus. This aggregate bandwidth was limited by an electronic element in the receiver circuit (155 Mbps PD-TIA) and processor (100 Mbps FPGA). With the system's measured optical isolation of greater than 80dB, and suitably fast receiver electronics, simulation modeling indicates that Terabit per second bus data rates can be achieved in inexpensive, mechanically robust and reliable form factors.

关键词： optical backplane bus volume holographic optical elements (VHOEs) VCSEL photodiode lateral and angular misalignment optical packaging plate

来源：评论

学校读者我要写书评

暂无评论

Integrated modeling of point-spread function stability of the SNAP telescope

Integrated modeling of point-spread function stability of th...

引用

conference on UV/optical/IR Space Telescopes: Innovative Technologies and Concepts III

作者： Besuner, R. W. Sholl, M. J. Lieber, M. D. Kaplan, M. L. Lawrence Berkeley Natl Lab Berkeley CA USA Univ Calif Berkeley Berkeley CA 94720 USA Ball Aerosp & Technol Corp Boulder CO USA

ISBN: (纸本)9780819468352

SNAP is a proposed space-based experiment designed to study dark energy and alternate explanations of the acceleration of the universe's expansion by performing a series of complementary systematic-controlled astrophysical measurements. The principal mission activities are the construction of an accurate Type la supernova Hubble diagram (the supernova program) and conducting a wide-area weak gravitational lensing (WL) survey. WL measurements require highly constant point spread function (PSF) second moments (ellipticity), and the aim of this study is to expand on the 2005 Sholl, et al. preliminary work, specifically via use of the Ball Aerospace integrated modeling tool, EOSyM (End-to-end optical system Model). This modeling environment combines thermal, structural and optical effects, including alignment errors, manufacturing residuals and diffraction, in an integrated model of the telescope. Thermo-mechanically induced motions and deformations of the mirrors are modeled as well as other disturbances, and corresponding ellipticity variations of the PSF are quantified for typical operational scenarios. In this study, the effects of seasonal variations in solar flux, transients introduced when pointing the body-fixed Ka-band antenna toward Earth, 90 degrees roll maneuvers (planned every three months of operations) and structure dimensional changes associated with composites desorption are quantified and introduced into the optical system. Uncertainty in the telescope ellipticity distribution may be reduced by examination of foreground stars within the field of view. Reference is made to ongoing work on the use of foreground stars in quantifying the PSF.

关键词： three-mirror telescopes space astronomy dark energy wide-field imaging weak lensing anisotropy

来源：评论

学校读者我要写书评

暂无评论

Advanced technology solar telescope optical design

Advanced technology solar telescope optical design

引用

conference on Ground-Based and Airborne Telescopes

作者： Hansen, Eric Price, Ron Hubbard, Rob National Solar Observatory (United States)

ISBN: (纸本)0819463329

The Advanced Technology Solar Telescope (ATST) will be the most powerful solar telescope and the world's leading resource for studying solar magnetism that controls the solar wind, flares, coronal mass ejections and variability in the Sun's output. Development of this four-meter off-axis solar telescope has presented many optical design challenges including: support of both Nasmyth and flexible coude lab instrumentation, incorporation of an integrated adaptive optics system, thermal control of optics, and optical alignment of multiple off-axis conics. This paper gives an overview of the optical design, error budgeting, and the performance modeling done to ensure the telescope will satisfy its optical performance requirements.

关键词： solar telescope off-axis mirrors optical design error budgeting thermal control active optics adaptive optics quasi-static alignment

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48页 << < 33 34 35 36 37 38 39 40 41 42 > >>

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：