Results 71 to 80 of about 286,840 (295)

Intervening BLR Clouds' Effects on Optical/UV Spectrum [PDF]

, 2012
Recent x-ray observations of Mrk 766 suggest that broad emission line region clouds cross our line of sight and produce variable x-ray absorption. Here we investigate what optical/ultraviolet spectroscopic features would be produced by such "Intervening ...
Arav, Arav, Baldwin, Bentz, Bianchi, Bianchi, Bregman, Chen Hu, Dunn, Elvis, Ferland, Ferland, Ferland, Ferland, Francis, Gary J. Ferland, Gaskell, Gaskell, Hu, Hu, Jian-Min Wang, Korista, Korista, Korista, Mathews, Nardini, Osterbrock, Osterbrock, Osterbrock, Peterson, Pu Du, Puccetti, Ralchenko, Rines, Risaliti, Risaliti, Risaliti, Risaliti, Shakura, Shang, Shields, Smith, Vasudevan, Wang, Wang, Wang, Wang, Ye Wang, Zheng   +48 more
core   +3 more sources

TreeSpider: In‐Canopy Exploration With Tether‐Based Aerial Modular Arms

Advanced Robotics Research, EarlyView.
A tethered drone with perching arms and a 360° ring enables unprecedented maneuverability within dense forest canopies. By dynamically adjusting tether length and decoupling pitch from the frame, it navigates between branches, senses multiple trees, and interacts physically with foliage.
Luca Romanello, Tian Lan, Salaheldin Hassan, Maximilian Leutschafft, Erdem Ekinci, Sophie F. Armanini, Mirko Kovac, Basaran Bahadir Kocer   +7 more
wiley   +1 more source

Enhancing GNSS Localization in Urban Canyons With a Hybrid CNN-Autoencoder Approach to LOS/NLOS Classification

IEEE Access
Non-Line-of-Sight (NLOS) reception is acknowledged as a primary source of positioning error in Global Navigation Satellite System (GNSS) applications, particularly within dense urban settings. When the direct satellite path is obstructed by buildings and
S. Titouni, I. Messaoudene, Y. Himeur, D. W. Dawoud, M. Belazzoug, B. Hammache, F. Chetouah, S. Atalla, W. Mansoor   +8 more
doaj   +1 more source

Semi-Definite Programming Relaxation for Non-Line-of-Sight Localization

, 2012
We consider the problem of estimating the locations of a set of points in a k-dimensional euclidean space given a subset of the pairwise distance measurements between the points.
Ekambaram, Venkatesan, Fanti, Giulia, Ramchandran, Kannan   +2 more
core   +1 more source

Pressure Support vs. Thermal Broadening in the Lyman-alpha Forest II: Effects of the Equation of State on Transverse Structure [PDF]

, 2010
We examine the impact of gas pressure on the transverse coherence of high-redshift (2
Alcock, Bechtold, Bi, Bolton, Cen, Charlton, Coppolani, Crotts, D'Odorico, D'Odorico, David H. Weinberg, Desjacques, Dinshaw, Fang, Faucher-Giguère, Gnedin, Hennawi, Hernquist, Hinshaw, Hui, Hui, Hui, Katz, Marble, Marble, Mark A. Fardal, McDonald, McDonald, McDonald, Miralda-Escudé, Miralda-Escudé, Molly S. Peeples, Neal Katz, Peeples, Rauch, Reisenegger, Ricotti, Rollinde, Romeel Davé, Schaye, Schaye, Schlegel, Schneider, Smette, Smette, Springel, Theuns, Viel, Zhang   +48 more
core   +3 more sources

A Multidirectional Textile Interface for Remote Control Using Dynamic Area‐Based Capacitance Modulation

Advanced Robotics Research, EarlyView.
Here, we present a textile, wearable capacitive interface enabling multidirectional remote control by dynamically modulating electrode overlap and spacing via a freely gliding upper electrode. A forearm‐mounted prototype drives robotic and media tasks with 12–15 ms latency, maintains < 0.8% drift after 500 cycles, and remains stably functional at 90 ...
Cagatay Gumus, Fulya Yenilmez, Kadir Ozlem, Hakan Kestir, Eren Tasdemir, Berkant Bakisli, Gökhan Ince, Ozgur Atalay, Asli Tuncay Atalay   +8 more
wiley   +1 more source

Error analysis of line-of-sight measurement for video satellite

Advances in Mechanical Engineering, 2017
Compared to ground-based observation, using video satellite to track space objects and determine the orbit has a unique advantage, which can provide strong support for space mission guarantee, object identification, important spacecraft collision warning,
Xueyang Zhang, Junhua Xiang, Yulin Zhang
doaj   +1 more source

Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots

Advanced Robotics Research, EarlyView.
This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou, Zhiqiang Chen, Yuanbiao Ma, Zhiqiang Tang, Qianqian Wang   +4 more
wiley   +1 more source

Uplink Performance Analysis in D2D-Enabled mmWave Cellular Networks

, 2017
In this paper, we provide an analytical framework to analyze the uplink performance of device-to-device (D2D)-enabled millimeter wave (mmWave) cellular networks.
Gursoy, M. Cenk, Turgut, Esma
core   +2 more sources

Single‐Cell Metabolic Imaging and Digital Scoring of Fat Tissue Remodeling by Label‐Free Metabolic Microscopy

Advanced Science, EarlyView.
Mid‐infrared optoacoustic microscopy (MiROM) acquires lipid‐ and protein‐ associated vibrational contrast in intact fat tissue without dyes, preserving native tissue architecture. Through lateral and axial segmentation, MiROM tracks intrinsic intracellular changes during postnatal remodeling. A quantitative spatial analysis tool (Q‐SAT) maps white‐ and
Myeongseop Kim, Constantin Berger, Alexander Wolf, Alina Peteranderl, Martin Klingenspor, Vasilis Ntziachristos, Yongguo Li, Miguel A. Pleitez   +7 more
wiley   +1 more source