A directional MAC protocol with the DATA-frame fragmentation and short busy advertisement signal for mitigating the directional hidden node problem

S Motegi, H Sekiya, J Ma, K Sanada… - 2012 IEEE 23rd …, 2012 - ieeexplore.ieee.org
This paper proposes a MAC protocol for ad hoc networks with directional antennas for
mitigating the directional hidden-node problem. In the proposed protocol, it is possible to tell the …

Small-world-network model based routing method for wireless sensor networks

N Komuro, S Motegi, K Sanada, J Ma, Z Li… - IEICE Transactions …, 2016 - search.ieice.org
This paper proposes a Watts and Strogatz-model based routing method for wireless sensor
network along with link-exchange operation. The proposed routing achieves low data-…

Imaging analysis of dural exposure in cholesteatomas with a skull base defect

M Motegi, Y Yamamoto, K Ouchi, T Nakazawa… - European Archives of …, 2023 - Springer
Purpose Dural exposure during cholesteatoma surgery can pose a risk of cerebrospinal fluid
leakage or residual disease. Therefore, delicate handling of the area surrounding the bone …

Origin of the equiaxed crystals in castings

A OHNO, T MOTEGI, H SODA - Transactions of the Iron and Steel …, 1971 - jstage.jst.go.jp
… By Atsumi OHNO, ** Tetsllichi MOTEGI, ** and Hiroshi SODA ** … In thc latcr stagc of
solidification, thc crystal on the mold wall grew in dendritic shape as shO\m in Photo. 3. …

Radiological and audiological prediction for ossicular fixation in chronic otitis media and tympanic membrane perforation

M Motegi, Y Yamamoto, T Akutsu, T Tada… - Otology & …, 2022 - journals.lww.com
Objectives: Recurrent middle-ear infection can lead to ossicular fixation, adversely affecting
post-tympanoplasty hearing outcomes. Preoperative prediction of ossicular fixation remains …

Radiological and audiological prediction for hearing outcome in cholesteatoma recidivism surgery

M Motegi, Y Yamamoto, T Nakazawa, T Tada… - European Archives of …, 2023 - Springer
Purpose In cholesteatoma recidivism, achieving satisfactory hearing outcome after revision
surgery remains challenging. The presence of concomitant recidivism pathology or related …

Imaging analysis for cholesteatoma extension to the perilymphatic space in labyrinth fistulae

M Motegi, Y Yamamoto, T Akutsu… - The …, 2021 - Wiley Online Library
Objectives/Hypothesis Disturbed perilymph behind a labyrinth fistula can lead to hearing
deterioration; thus, delicate manipulation is required during surgery for cholesteatomatous …

Preoperative prediction by artificial intelligence for mastoid extension in pars flaccida cholesteatoma using temporal bone high-resolution computed tomography: A …

…, R Yui, T Nakazawa, S Kurihara, A Baba, M Motegi… - PLoS …, 2022 - journals.plos.org
Cholesteatoma is a progressive middle ear disease that can only be treated surgically but with
a high recurrence rate. Depending on the extent of the disease, a surgical approach, such …

A Directional MAC Protocol for Mitigating Frame Collision and Deafness Problem in Wireless Ad Hoc Networks

T Okazawa, J Ma, R Manzoku, S Motegi… - IEICE Technical Report; …, 2013 - ken.ieice.org
(in English) This paper proposes a Medium Access Control (MAC) protocol for wireless ad
hoc networks with smart antennas for avoiding the frame collision and the deafness problem. …

[HTML][HTML] Distinguishing coagulase-negative Staphylococcus bacteremia from contamination using blood-culture positive bottle detection pattern and time to positivity

S Osaki, K Kikuchi, Y Moritoki, C Motegi… - Journal of Infection and …, 2020 - Elsevier
Aim Detection of coagulase-negative Staphylococcus in blood culture may be a result of either
bacteremia or contamination. This often leads to diagnostic uncertainly. Our objective was …