準ミリ波帯電力増幅器のアウトフェージング動作による広ダイナミックレンジ化に関する研究

電気通信大学修士2022thesi

Low-cost optical fiber temperature-sensing system employing optical transceivers for Ethernet and long-period fiber grating

application/pdfApplied Optics. 2019, 58 (9), P.2366-2371journal articl

乳児と養育者（親）の音声コミュニケーション行動と家庭内の音環境に関する研究 : 泣き声の聴取傾向からみた居室音環境の快適性

The experiment described in this paper was designed to investigate the acoustics of living spaces, with the aim of fostering the design of more comfortable environments acoustically optimized for infant childcare. Recently, incidents of infant abuse reportedly triggered by excessive crying have been on the rise. One cause, we hypothesized, could be the changing structure of Japanese homes. Using recordings of crying meant to be maximally stress-inducing to mothers, the experiment was designed to examine the effect of a change in the acoustic environment upon a listener's perception of an infant's voice. Subjects were asked to listen to two recordings of the same voice at 90dB±1dB, the first given a reverberation time of 270 ms (simulating an “anechoic environment”), and the second with a time of 970 ms (an “echoic environment”). Subjects reported that they felt “tired,” “uneasy,” and that they experienced “headache” and “ringing in the ears” at a higher rate in the echoic than in the anechoic environment. However, responses indicating hypothetical maternal behavior such as a desire to“determine why the baby is crying”or to“calm the baby”were reported at approximately equal rates in both environments. These results indicate that an echoic environment may exacerbate the stress experienced by a mother listening to a crying infant. Further research examining the ways in which actual mother-infant pairs play and communicate in varying acoustic environments is planned.textapplication/pdfdepartmental bulletin pape

Measurement of azimuthal asymmetries in inclusive production of hadron pairs in e^＋e^－ annihilation at √s = 10.58 GeV

The Collins effect connects transverse quark spin with a measurable azimuthal asymmetry in the yield of hadronic fragments around the quark’s momentum vector. Using two different reconstruction methods we measure statistically significant azimuthal asymmetries for charged pion pairs in e^+e^- annihilation at center-of-mass energies of 10.52 GeV and 10.58 GeV, which can be attributed to the fragmentation of primordial quarks with transverse spin components. The measurement was performed using a data set of 547 fb^{-1} collected by the Belle detector at KEKB improving the statistics of the previously published results by nearly a factor of 20.journal articl

Observation of B+→ΛΛ̅K+

journal articl

Improved stopped-flow time-resolved resonance Raman spectroscopy device for studying enzymatic reactions

An improved stopped-flow resonance Raman spectroscopy device was constructed using a stopped-flow mixer with a dead time of 3 ms and a mixing volume of 0.1 mL. The device was tested using myoglobin, where the formation reaction of a high-valent heme species, ferryl-oxo heme, was monitored by time-resolved resonance Raman spectroscopy after mixing a ferric myoglobin solution with a hydrogen peroxide solution. The ferryl-oxo heme formation rate constant obtained by Raman spectroscopy is in good agreement with the rate constant obtained by conventional stopped-flow absorption spectroscopy for the same reaction under the same conditions. It is proved by these results that the present device is generally applicable to enzyme-substrate reactions with a significantly higher time resolution than previously reported.journal articl

Forest plot of case–control studies examining pesticide exposure and the risk of developing PD

<p><b>Copyright information:</b></p><p>Taken from "Pesticides and Parkinson’s Disease—Is There a Link?"</p><p>Environmental Health Perspectives 2005;114(2):156-164.</p><p>Published online 7 Sep 2005</p><p>PMCID:PMC1367825.</p><p>This is an Open Access article: verbatim copying and redistribution of this article are permitted in all media for any purpose, provided this notice is preserved along with the article's original DOI.</p> () Results taken from meta-analysis of . () Unmatched calculation; figures unavailable for matched analysis. () Adjusted OR. () Assuming no missing responses and using cardiovascular patient control group. () Exposure to pesticides and fertilizers

Forest plot of case—control studies looking at exposure to specific groups of pesticides or individual pesticide compounds and the risk of developing PD

<p><b>Copyright information:</b></p><p>Taken from "Pesticides and Parkinson’s Disease—Is There a Link?"</p><p>Environmental Health Perspectives 2005;114(2):156-164.</p><p>Published online 7 Sep 2005</p><p>PMCID:PMC1367825.</p><p>This is an Open Access article: verbatim copying and redistribution of this article are permitted in all media for any purpose, provided this notice is preserved along with the article's original DOI.</p> () Adjusted OR. () Results taken from the meta-analysis of . () Men only; cases compared with control group of patients with chronic cardiovascular disease. () Cases compared with regional controls. () OR recalculated from data presented

多摩ニュータウン開発地域の植生学的調査研究 : 第一部

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