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Researchers from Cornell’s School of Applied and Engineering Physics and Samsung’s Advanced Institute of Technology have created a first-of-its-kind metalens – a metamaterial lens – that can be focuse...
Zoom media briefing:The Event Horizon Telescope, a year after capturing the image of a black hole（图）
Zoom media briefing Event Horizon Telescope year after capturing the image black hole
2020/4/10
Media are invited to join an April 10 Zoom media briefing with Sheperd S. Doeleman, founding director of the Event Horizon Telescope (EHT), and astrophysicist Michael Johnson to discuss the one-year a...
分析TPS-ZOOM功能在肺肿瘤SBRT靶区体积勾画中的差异
放疗 SBRT 肺肿瘤
2020/8/10
探索TPS(放射治疗计划系统)-ZOOM（缩放）功能在肺肿瘤立体定向体部放射治疗（stereotactic body radiation therapy,SBRT)靶区体积勾画中的临床差异。方法：临床分析25个肺内拟行SBRT治疗的可见病灶；其中17个病灶≤3 cm，3 cm＜8个病灶≤5 cm。同一个放疗医师分别在TPS-ZOOM取值为100%、150%、200%、250%、300%、400%、...
New Gravitational Wave Hits Earth--For The First Time,3 Detectors Zoom In On Its Location（图）
New Gravitational Wave Earth The First Time 3 Detectors Zoom On Its Location
2017/10/24
For the first time, three detectors have tracked the gravitational waves emitted by a merger of two black holes -- a critical new capability that allows scientists to more closely locate a gravitation...
Stability of zoom and fixed lenses used with digital SLR cameras
photogrammetry calibration accuracy stability digital camera zoom lens fixed lens
2015/8/24
Consumer grade digital cameras are widely used for close range photogrammetric applications because of the convenience of digital images and the low cost of capture and reproduction. Since the introdu...
Zoom-dependent calibration for consumer grade-cameras
self calibration camera calibration lens distortion zoom lens
2015/8/24
A significant practical constraint currently applying to the adoption of consumer-grade digital cameras for photogrammetric measurement is the requirement to record images at fixed zoom and focus sett...
应用Zoom FFT方法提高相干测风激光雷达频谱分辨率
激光雷达 相干探测 信号处理 频率细化
2016/8/17
脉冲相干测风激光雷达距离门内的回波具有中频高、频带宽、采样点稀疏等特点。采用传统的信号处理方法， 雷达频谱分辨率很难提高。在研究无线电雷达信号频谱细化技术的基础上， 采用Zoom FFT 频谱细化结合数字滤波器组的方法， 通过仿真研究验证了该方法对提高脉冲相干激光测风雷达的频谱分辨率具有良好效果。文章介绍了Zoom FFT 算法和数字滤波器组的原理，对模拟低频和高频信号进行了仿真，并且利用真实风场...
IMPLEMENTATION OF ZOOM-DEPENDENT CAMERA CALIBRATION IN CLOSE-RANGE PHOTOGRAMMETRY
Zoom-dependent calibration self-calibration close-range photogrammetry zoom lens distortion variation
2014/4/28
The application of consumer-grade cameras for photogrammetric measurement has traditionally been subject to the requirement that imagery is recorded at fixed zoom and focus settings. The camera is the...
Design and Analyses of a Planar Zoom Module as a Beam Expander
planar zoom module beam expander planar optics planar integrated free space optics diffractive optics
2011/11/25
A novel planar zoom module (PZM) is presented in this article. The PZM is realized by integrating optical elements on its surfaces with the folding optical axis and performing the zoom function by tra...
Research on Compression and Rebounding of the Zoom Air in Sport-Shoes
Compression Energy Return Rebounding Shock Absorption Sport-Shoe Zoom Air
2011/12/21
Today, the zoom air was widely used in top grade sport-shoes. Firstly, the function of zoom air, including shock absorption, energy return, light quantization and ornament results were introduced. Sec...
Inverse modelling of national and European CH4 emissions using the atmospheric zoom model TM5
national and European CH4 emissions atmospheric zoom model TM5
2009/2/17
A synthesis inversion based on the atmospheric zoom model TM5 is used to derive top-down estimates of CH4 emissions from individual European countries for the year 2001. We employ a model zoom over Eu...
The two-way nested global chemistry-transport zoom model TM5: algorithm and applications
two-way nested global chemistry-transport zoom model TM5 algorithm
2009/2/6
This paper describes the global chemistry Transport Model, version 5 (TM5) which allows two-way nested zooming. The model is used for global studies which require high resolution regionally but can wo...
A Usability Evaluation of Web Map Zoom and Pan Functions（图）
Web Map Zoom Pan Interface Design Usability
2008/10/30
Due to limitations on screen size and resolution, the usability of web maps relies heavily on their interface design. The main goal of this research is to find better interface designs for web maps an...
背景与目的： 优化Mini Zoom IPG Runner系统双向电泳条件。 材料与方法： 使用Invitrogen公司与Mini Zoom IPG Runner系统配套的商品化预制胶(一向和二向)和溶液体系对血浆蛋白进行双向电泳，采用不同的聚焦条件和样品预处理，观察其对实验结果的影响。 结果： 提高聚焦电压增强聚焦及脱盐处理可获得比推荐条件更好的双向电泳图谱。 结论： 提高聚焦电压增强聚焦及脱盐...