Results 51 to 60 of about 10,336,803 (378)

Distance Measurements Related to Cartesian Product of Cycles

Journal of Mathematics, 2020
Graph theory and its wide applications in natural sciences and social sciences open a new era of research. Making the graph of computer networks and analyzing it with aid of graph theory are extensively studied and researched in the literature.
Xiaoli Qiang, Saima Nazeer, Yu-Ming Chu, Muhammad Awais Umar, Imrana Kousar, Ammara Sehar   +5 more
doaj   +1 more source

Can luminosity distance measurements probe the equation of state of dark energy [PDF]

, 2000
Distance measurements to Type Ia supernovae (SNe Ia) at cosmological distances indicate that the Universe is accelerating and that a large fraction of the critical energy density exists in a component with negative pressure.
Brax, Einsenstein, Garnavich, Huterer, Huterer, Maor, P. Astier, Perlmutter, Riess, Saini, Tegmark, van Waerbeke   +11 more
core   +3 more sources

Improving Performance of Bluetooth Low Energy-Based Localization System Using Proximity Sensors and Far-Infrared Thermal Sensor Arrays

Sensors
This paper presents the concept of a hybrid positioning scheme using results from a Bluetooth Low Energy (BLE)-based system and additional infrared (IR) devices: proximity sensors and far-infrared thermal sensor arrays.
Vitomir Djaja-Josko, Marcin Kolakowski, Jacek Cichocki, Jerzy Kolakowski   +3 more
doaj   +1 more source

The Hubble Constant determined through an inverse distance ladder including quasar time delays and Type Ia supernovae

, 2019
Context. The precise determination of the present-day expansion rate of the Universe, expressed through the Hubble constant $H_0$, is one of the most pressing challenges in modern cosmology.
Birrer, S., Bonvin, V., Courbin, F., Jee, I., Komatsu, E., Rusu, C. E., Shajib, A. J., Suyu, S. H., Taubenberger, S., Wong, K. C.   +9 more
core   +1 more source

Modification to the Luminosity Distance Redshift Relation in Modified Gravity Theories

, 2009
We derive an expression for the luminosity distance as a function of redshift for a flat Robertson-Walker spacetime perturbed by arbitrary scalar perturbations possibly produced by a modified gravity theory with two different scalar perturbation ...
C. M. Will, Eran Rosenthal, G. F. R. Ellis, I. M. H. Etherington, Ira M. Wasserman, J. Yadav, M. Sasaki, P. J. E. Peebles, R. M. Wald, Éanna É. Flanagan   +9 more
core   +1 more source

One-Dimensional Motion Representation for Standing/Sitting and Their Transitions

Sensors
In everyday life, people often stand up and sit down. Unlike young, able-bodied individuals, older adults and those with disabilities usually stand up or sit down slowly, often pausing during the transition.
Geunho Lee, Yusuke Hayakawa, Takuya Watanabe, Chunhe Li   +3 more
doaj   +1 more source

Gender-based Morphometric Analysis of the Human Orbital Aperture Profile using 3D Reconstruction Computed Tomography: A Cross-sectional Retrospective Study [PDF]

Journal of Clinical and Diagnostic Research
Introduction: Sex estimation is a crucial aspect of forensic medicine and requires primary consideration when examining skeletal remains. Among the various anatomical features, the orbital region holds significant importance due to its distinct ...
Muhammad Omer Afzal Bhatti, Mujeeb Ur Rehman Parrey, Muhammad Ikram Ali, Allah Rakhyo Shoro, Abdulkrem Ahmed Alenazi, Rayan Alhumaidi Alruwaili   +5 more
doaj   +1 more source

Distance Measurements and Stellar Population Properties via Surface Brightness Fluctuations

, 2012
Surface Brightness Fluctuations (SBFs) are one of the most powerful techniques to measure the distance and to constrain the unresolved stellar content of extragalactic systems.
Fritz, Alexander
core   +1 more source

A Systematic Review of Evidence on the Clinical Effectiveness of Surveillance Imaging in Children With Medulloblastoma and Ependymoma

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Surveillance imaging aims to detect tumour relapse before symptoms develop, but it's unclear whether earlier detection of relapse leads to better outcomes in children and young people (CYP) with medulloblastoma and ependymoma. This systematic review aims to identify relevant literature to determine the efficacy of surveillance magnetic ...
Lucy Shepherd, Melissa Taylor, Helen Fulbright, Bob Phillips   +3 more
wiley   +1 more source

The Distance to the Coma Cluster from Surface Brightness Fluctuations

, 1997
We report on the first determination of the distance to the Coma Cluster based on surface brightness fluctuation (SBF) measurements obtained from Hubble Space Telescope WFPC2 observations of the bright E0 galaxy NGC 4881 in the Coma Cluster and ground ...
Bjarne Thomsen, Davies R. L., Graham J. A., Guy Worthey, Hamuy M., Jorgensen I., Mark Hammergren, William A. Baum   +7 more
core   +1 more source