Zobrazeno 1 - 10
of 750
pro vyhledávání: '"Dong-woo Kim"'
Autor:
Dong-Woo Kim, Soon-Soo Oh
Publikováno v:
Sensors, Vol 24, Iss 9, p 2884 (2024)
In this paper, a volumetric Rotman lens antenna operating at 28 GHz is proposed. The design formula and procedure were derived for the 3-D Rotman lens antenna. The number of tilted beams is 3 × 3. The six rectangular blocks are assembled using a met
Externí odkaz:
https://doaj.org/article/921bd34bfc7047d493a795436ab73621
Publikováno v:
Nuclear Engineering and Technology, Vol 53, Iss 11, Pp 3837-3851 (2021)
To investigate how the fabrication and repair of socket welded joints could be used to enhance fatigue resistance under vibration condition, experimental test data of installation conditions that potentially influence fatigue strength were analyzed w
Externí odkaz:
https://doaj.org/article/177e43df329a4e9ba6fcfd1a4901dd48
Publikováno v:
Electronics Letters, Vol 58, Iss 1, Pp 1-3 (2022)
Abstract This letter proposes a measurement technique for the relative phase of a 5G new radio (NR) signal. The total radiated power (TRP) is measured to evaluate wireless equipment. However, this cannot be implemented using the near‐field measurem
Externí odkaz:
https://doaj.org/article/88e241d7a4894444927be49c45cfa1fb
Publikováno v:
Encephalitis, Vol 1, Iss 2, Pp 45-50 (2021)
Purpose To evaluate cognitive function with ease at bedside, we developed a novel neurologic exam called the “food memory test (FMT)” and evaluated its validity for use in clinical practice. Methods In this prospective study in a neurology clinic
Externí odkaz:
https://doaj.org/article/253573d4d9874829829e7e9d5a17e5a0
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 21, Iss 1, Pp 1-7 (2021)
In this paper, we present experimental transmittance data at 0.75, 1, 2, 3, 4.5, 6, 10, 18, and 24 GHz from urban and rural environments. All measurements were performed under line-of-sight (LoS) conditions. Reach distances were extracted using the m
Externí odkaz:
https://doaj.org/article/f43aa780f78445d5a3c79554a823b67e
Publikováno v:
Physical Therapy Korea, Vol 27, Iss 3, Pp 185-190 (2020)
Background: Backward walking exercise may offer some unique and potentially beneficial differences compared with forward walking exercise. There is still a lack of research on backward walking exercises and forward head posture. Objects: The purpo
Externí odkaz:
https://doaj.org/article/ba48864beefe443a96afe8b765f06711
Autor:
Dong-Woo Kim, Amanda Malnati, Alyssa Cassity, Giuseppina Fabbiano, Juan Rafael Martinez Galarza, Ewan O’Sullivan
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 1, p 56 (2023)
X-ray bright optically normal galaxies (XBONGs) are galaxies with X-ray luminosities consistent with those of active galactic nuclei (AGNs) but no evidence of AGN optical emission lines. Crossmatching the Chandra Source Catalog version 2 with the Slo
Externí odkaz:
https://doaj.org/article/8c6208ca08564239bbddd4d120e1fdc5
Autor:
Dong-Woo Kim, Alyssa Cassity, Binod Bhatt, Giuseppina Fabbiano, Juan Rafael Martinez Galarza, Ewan O’Sullivan, Arnold Rots
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 268, Iss 1, p 17 (2023)
We present the extensive and well-characterized Chandra X-ray Galaxy Catalog (CGC) of 8547 galaxy candidates in the redshift range z ∼ 0.04–0.7, optical luminosity 10 ^10 –10 ^11 L _r _⊙ , and X-ray luminosity (0.5–7 keV) L _X = 2 × 10 ^40
Externí odkaz:
https://doaj.org/article/3a8e8519283342ab9f4dce571c62dbed
Publikováno v:
International Journal of Antennas and Propagation, Vol 2021 (2021)
Wireless communication technologies are expected to become essential in future self-driving vehicles. This study presents an antenna for vehicle wireless communication with a bandwidth of 75 MHz at a Wireless Access in Vehicular Environment frequency
Externí odkaz:
https://doaj.org/article/7701d43a8ba84015b1619418a7864830
Publikováno v:
Journal of Functional Foods, Vol 29, Iss , Pp 104-114 (2017)
We investigated the neuroprotective effects of orobol derivatives and ethanol extracts from Cudrania tricuspidata fruits. Among the nine isolates from a 50% ethanol extract from Cudrania tricuspidata fruits (CTE50), orobol (OB), 6-prenylorobol (POB),
Externí odkaz:
https://doaj.org/article/257e345a1a184f9eaeaadcc6c9c601cb