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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Symplectic fillings of lens spaces and Seifert fibered spaces
透镜空间 塞弗特纤维空间 辛填充
2023/4/27
In this talk, we apply Menke's JSJ decomposition for symplectic fillings to several families of contact 3-manifolds. Among other results, we complete the classification up to orientation-preserving di...
Superconductors have long been considered the principal approach for realizing electronics without resistivity. In the past decade, a new family of quantum materials, “topological materials,” has offe...
Engineers develop thin, lightweight lens that could produce slimmer camera phones, longer-flying drones
Engineers develop thin lightweight lens slimmer camera phone longer-flying drones
2019/10/10
The new wave of smartphones to hit the market all come with incredible cameras that produce brilliant photos. There's only one complaint -- the thick camera lenses on the back that jet out like ugly b...
PHOTOGRAMMETRIC SURVEY WITH FISHEYE LENS FOR THE CHARACTERIZATION OF THE LA SASSA CAVE
Photogrammetry Structure from Motion Cultural Heritage 3D modeling Georeferencing ronze Age Pleistocene
2019/2/28
The survey of ancient cave can generally be performed by traditional topographic methods that allow also its georeferencing in a global reference frame; some difficulties may arise when there are narr...
Curricular Reform in Pharmacy Education Through the Lens of the Flexner Report of 1910
Curricular Reform Pharmacy Education
2018/11/22
Abraham Flexner’s 1910 report on medical education in the United States (US) and Canada propelled medical training forward into a contemporary renaissance. The report heralded many seismic changes tha...
TASK AND PROGRESS OF IAEG-SDGS: WGGI IN MONITORING SDGS THROUGH A ‘GEOGRAPHIC LOCATION’ LENS
Sustainable Development Goals Target Indicator Geospatial Information Monitoring
2018/5/14
In September 2015, the 193 Member States of the United Nations (UN) unanimously adopted the 2030 Agenda for Sustainable Development and its 17 Sustainable Development Goals (SDGs), aiming to transform...
2018年SPIE透镜设计与光学工程的现状会议（SPIE Current Developments in Lens Design and Optical Engineering XIX）
2018年 SPIE 透镜设计与光学工程的现状 会议
2017/11/27
Optical design is a fascinating activity, ranging as it does from lens design and modeling with the help of the immensely powerful design software currently available, to the semi-intuitive art of cre...
Cosmic Magnifying Lens Reveals Inner Jets of Black Holes（图）
Cosmic Magnifying Lens Inner Jets Black Holes
2017/9/5
"We have known about the existence of these clumps of material streaming along black hole jets, and that they move close to the speed of light, but not much is known about their internal structure or ...
2017SPIE透镜设计与光学工程现状专题会议（Current Developments in Lens Design and Optical Engineering XVIII）
2017 SPIE 透镜设计与光学工程现状 专题会议
2017/4/25
2017SPIE透镜设计与光学工程现状专题会议（Current Developments in Lens Design and Optical Engineering XVIII）。
A unique camera that can capture a detailed micron-resolution image from a distance uses a laser and techniques that borrow from holography, microscopy and “Matrix”-style bullet time. A prototype buil...
Predicting Climate Impacts on Ecosystems Will Require Scientists to Widen the Lens
Predicting Climate Ecosystems Scientists Widen the Lens
2016/11/4
Most research on climate change ecology is limited to the impacts of a single climate variable, such as temperature or water availability, on one trophic level at a time — and often on a single specie...
Reconsidering breakfast intake and children’s neuropsychological function through the lens of behavioral economics
Reconsidering breakfast children’s neuropsychological function behavioral economics
2018/12/13
Studies that report counterintuitive findings can be richly informative and stimulate the imagination. They can also challenge the field to consider alternative theories and mechanisms. Such is the ca...
CRITICAL ASSESSMENT OF CORRECTION METHODS FOR FISHEYE LENS DISTORTION
Fisheye Lens Distortion Camera Calibration,Critical Assessment
2016/7/4
A fisheye lens is widely used to create a wide panoramic or hemispherical image. It is an ultra wide-angle lens that produces strong visual distortion. The distortion modeling and estimation of the fi...
Many things in the natural world are geometrically chiral, meaning they cannot be superimposed onto their mirror image. Think hands — right and left hands are mirror images but if you transplanted a r...
Structure vs Hardness through the Obfuscation Lens
Indistinguishability Obfuscation Statistical Zero-knowledge NP ∩ coNP
2016/6/6
Cryptography relies on the computational hardness of structured problems. While one-way
functions, the most basic cryptographic object, does not seem to require much structure, as we
advance up the ...