Results 111 to 120 of about 3,881,044 (260)

Revealing the impact of urbanization on landscape ecological risk: a case study of the lower reaches of the Yangtze River, China

Frontiers in Environmental Science
Cities along the lower reaches of the Yangtze River (CLRYR) have highlighted human-land conflicts with their rapid urban expansion. Fully assessing the landscape ecological risk (LER) of the region and its response in the context of urbanization is of ...
Yatong Guo, Wei Wang, Xitang Zhang, Chun Liu, Chun Liu, Youxiao Wang, Wenqi Chen, Xucong Wan, Xinyu Zhang, Yu Lin, Xuya Zhang, Yaohui Liu, Yaohui Liu   +12 more
doaj   +1 more source

Two‐Dimensional Isotropic Spatial Differentiation Through Complete Polarization Control

Advanced Optical Materials, EarlyView.
This work enables two‐dimensional isotropic spatial differentiation at planar interfaces over a wide range of incident angles by extending the output polarization from linear to elliptical. The choice of incident angle can be used to balance broader spectral response at low angles and higher edge‐detection efficiency at larger angles.
Doyoon Lee, Minkyung Kim
wiley   +1 more source

Standard income tax service ..

, 1915
Issue for 1915 includes the 2nd enl. ed. of the company's Status of bonds under the Federal income tax.Issues for 1921- published in 2 sections.Issues for 1915-1920 published annually.
Standard and Poor's Corporation., Standard Statistics Company.   +1 more
core  

Turning Light Into Matter: Programmable Microstructures Via Dose Control in Two‐Photon Polymerization

Advanced Optical Materials, EarlyView.
This work augments two‐photon polymerization with point‐wise dose control, enabling structures with heterogeneous material properties such as refractive index. An open source toolbox and superior calibration methodology for the refractive index pave the way for bio‐mimicking or numerically optimized structure designs, and enhance the synergy between 3D
Michał Ziemczonok, Koen Vanmol
wiley   +1 more source

Food web metrics in the Marinello ponds (VE, FP, ME) across the sampling seasons: carbon and nitrogen range of OM sources (OM-CR and OM-NR), carbon and nitrogen range of consumers (C-CR and C-NR), standard ellipse area corrected (SEAc), distance to centroid (CD), mean and standard deviation of the nearest neighbour distance (MNND and SNNDD), food chain length (FCL).

, 2016
Food web metrics in the Marinello ponds (VE, FP, ME) across the sampling seasons: carbon and nitrogen range of OM sources (OM-CR and OM-NR), carbon and nitrogen range of consumers (C-CR and C-NR), standard ellipse area corrected (SEAc), distance to ...
Salvatrice Vizzini (351290), Antonio Mazzola (2217571), Geraldina Signa (2217574)   +2 more
core   +1 more source

Multidirectional Motion Strategy of Miniature Water Surface Robot Actuated by Single Exciter

Advanced Robotics Research, EarlyView.
A novel multidirectional motion strategy on the water surface based on a single exciter is proposed, and a single‐exciter single‐plate module is developed for actuation. The driving forces generation mechanism of the module is revealed from the perspective of the asymmetric surface wave field.
Haoxuan He, Dehong Wang, Jing Li, Shijing Zhang, Yingxiang Liu   +4 more
wiley   +1 more source

Spatio-temporal pattern and associate factors study on intestinal infectious diseases based on panel model in Zhejiang Province

BMC Public Health
Background Intestinal infectious diseases (IIDs) can impact the growth and development of children and weaken adults. This study aimed to establish a spatial panel model to analyze the relationship between factors such as population, economy and health ...
Lanfang Gu, Jian Cai, Yan Feng, Yancen Zhan, Zhixin Zhu, Nawen Liu, Xifei Guan, Xiuyang Li   +7 more
doaj   +1 more source

A note on waveless subcritical flow past a submerged semi-ellipse

, 2013
The flow of water over a broad obstruction usually creates a downstream wave train. However, it has been shown that for some objects and discrete values of flow rate and height and length of the obstruction, there are no downstream waves - and hence zero
Hocking, GC (15485702), Holmes, RJ (15571661), Lawrence Forbes (14736748)   +2 more
core  

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

Advanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source

Wavefront Analysis for Annular Ellipse Aperture [PDF]

, 2013
The orthonormal annular ellipse Zernike polynomials are important for wavefront analysis of annular ellipse aperture (elliptical aperture with an elliptical obscuration) for their property of orthgonalization over such aperture and representing balanced ...
Hasan, Sundus Y.
core   +1 more source