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Search Results: 1 - 10 of 1716 matches for " Ririko Aoki "
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The Influence of Sound Awareness on the Level of Sound Generated during Nursing Activity in a Pseudo-Ward  [PDF]
Tomoko Shimoda, Maria Asai, Rei Yoshida, Ririko Aoki, Rika Yano
Open Journal of Nursing (OJN) , 2016, DOI: 10.4236/ojn.2016.64027
Abstract: Sound generated in a ward can be classified into 1) generated by medical staff, 2) generated by patients and their visitors, and 3) others, such as from in-hospital broadcasting microphones and nurse calls. Among these sounds, the incidence from medical staff, in particular, is reportedly high. The study objective is to investigate whether sound awareness is effective in regulating the sound environment even in a busy situation, such as in a real clinical setting, and to examine the extent to which sound awareness affects sound level. Nursing students were asked to perform a series of nursing activities in a pseudo-ward, and the changes in the sound level generated during the nursing activities with or without time and sound awareness were examined. Under varying experimental conditions, the sound and time levels associated with the nursing activities were measured in the following order: condition 1, without sound or time awareness; condition 2, with time awareness but without sound awareness; and condition 3, with both sound and time awareness. The time to perform nursing activities was longer with sound awareness. However, when aware of time only, the sound level from nursing activities rose by 2.3 dB, whereas when aware of both time and sound, the sound level dropped by 3.0 dB. With both time and sound awareness, there is a distinct drop in the sound level from nursing activities, such as wagon handling, handling of items (trays, bowls), working at the sink, and opening and closing the microwave oven door. These results suggest that even in a pseudo-clinical setting it is possible to regulate the environmental sound through the environmental sound awareness of the medical staff, resulting in a drop in the sound level generated while performing nursing activities.
Hypothesis of Conservation of Particle Number  [PDF]
Kozo Aoki
Open Journal of Microphysics (OJM) , 2011, DOI: 10.4236/ojm.2011.11001
Abstract: As for several nuclear reactions, the electroweak interaction is simply explained by a law of conservation of particle number. We find that the positron and electron consist of the three fundamental particles, and , respectively. Furthermore, the members of the second and third generations quark composites consist of the first generation quark and the neutrino of fundamental particles. The particle and its anti- particle pair(or neutrino and its antineutrino pair) have to be an energy quantum (or a photon). The minimum Higgs boson (called “God particle”) might be a neutral pion. The fundamental particles are simply up and down quark, neutrino, muon-neutrino, and those anti-particles.
Second Thoughts about the τ-θ Puzzle  [PDF]
Kozo Aoki
Open Journal of Microphysics (OJM) , 2012, DOI: 10.4236/ojm.2012.23006
Abstract: The new parity value of π0 was determined according to the hypothesis of conservation of particle number. The theo-retical pentaquark proton’s parity value was also determined, and it was found that the conservation of parity is account nicely for the τ-θ puzzle.
Characteristics of Unsteady Boundary Layer Induced by the Compression Wave Propagating in a Tunnel  [PDF]
Toshiyuki Tanaka, Toshiyuki Aoki
Open Journal of Fluid Dynamics (OJFD) , 2012, DOI: 10.4236/ojfd.2012.24A030
Abstract:

A compression wave is generated ahead of a high-speed train, while entering a tunnel. This compression wave propa- gates to the tunnel exit and spouts out as a micro pressure wave, causing an exploding sound. In order to estimate the magnitude correctly, the mechanism of the attenuation and distortion of a compression wave propagating along a tunnel must be understood and experimental information on these phenomena is required. An experimental and numerical in- vestigation is carried out to clarify the mechanism of the propagating compression wave in a tube. The final objective of our study is to understand the mechanism of the attenuation and distortion of propagating compression waves in a tun- nel. In the present paper, experimental investigations are carried out on the transition of the unsteady boundary layer induced by a propagating compression wave in a model tunnel by means of a developed laser differential interferometry technique.

Laterality and Accuracy of Force Exertion in Elbow Flexion  [PDF]
Hiroki Aoki, Shinichi Demura
Advances in Physical Education (APE) , 2017, DOI: 10.4236/ape.2017.71009
Abstract:
In elbow flexion, accuracy of force exertion on demand values might differ between dominant and non-dominant hands. This study examined laterality and accuracy of force exertion in elbow flexion. The participants were 22 right-handed, healthy young males (mean age 22.6 ± 4.3 yrs, mean height 172.7 ± 7.0 cm, mean mass 75.0 ± 12.3 kg). Demand values of 25%, 50%, and 75% of maximum voluntary contraction (MVC) were selected. Using subjective judgment, the participants exerted the elbow flexion strength of each arm on each demand value. Evaluation parameters were differences (errors) between demand and exertion values and their total error. The results of a two-way ANOVA (dominant and non-dominant arms × demand value) showed significant interaction. In multiple comparison tests, errors were greater in 25% MVC than in 50% and 75% MVC for both arms. However, no significant difference was found between arms. In conclusion, in both dominant and non-dominant arms, accuracy of force exertion in elbow flexion does not show laterality and is higher in greater demand values (over 50% MVC) than in lesser values (25% MVC).
Advantages of Endoscopically Assisted Surgery for Attic Cholesteatoma
Kazuhiro Aoki
Diagnostic and Therapeutic Endoscopy , 2001, DOI: 10.1155/dte.7.99
Abstract: Combined use of an operating microscope and a middle ear endoscope seems to be helpful for selecting an appropriate surgical technique and for identifying more patients in whom cholesteatoma can be removed by a trans-canal approach alone. To investigate whether attic cholesteatoma can be treated by a trans-canal approach alone, a review was performed of patients who had undergone endoscopically assisted tympanoplasty and the outcome of surgery was compared with the preoperative CT findings. Using a rigid endoscope (3 mm in diameter and 6 cm in length with a viewing angle of 30°), twenty eight patients were examined to determine whether total resection of the cholesteatoma was possible by trans-canal atticotomy alone. According to the CT findings, total resection of cholesteatoma was possible by trans-canal atticotomy combined with the use of a rigid endoscope not only in 4 patients with the shadow localized in the epitympanum on preoperative CT scans but also in 18 out of 24 patients with the shadow extending from the epitympanum to the distal mastoid air cells. This study indicates that the trans-canal approach with endoscopic guidance is a useful technique for the treatment of cholesteatoma.
The Construction of a Wooden Box Trap Designed for Yellow-Bellied Marmots (Marmota flaviventris)
J. Aoki
Wildlife Biology in Practice , 2008,
Abstract: A study focused on the population dynamics and food habits of yellow-bellied marmots (Marmota flaviventris) was investigated at Sierra Summit Ski Area, Lakeshore, CA, USA during the summers of 1993 and 1994. Live trapping of the yellow-bellied marmots was the preferred method of collecting data for this project and it was estimated that a minimum of 14 traps were needed to adequately cover the study site. However, there were a limited number of commercially-built wire traps available, thus the need to construct box traps made of plywood. Approximately 45 min was required to construct a wooden box trap. Yellow-bellied marmots were successfully captured in all 11 wooden box traps throughout the study period. Seventy-eight percent of the 117 captured marmots were caught in the wooden box traps. In addition, there was a statistically significant (chi-square, P < 0.05) difference in trap type success between the commercial wire traps and the wooden box traps. The wooden box traps higher capture rate may be due to trap preparation before baiting and the amount of cover provided by the trap.
Japanese Higher Education Institutions in the 21st Century: The Challenge of Globalization and Internationalization
AOKI, Kumiko
Electronic Journal of Contemporary Japanese Studies , 2005,
Abstract: Higher education institutions in Japan are facing unprecedented challenges today due to the following three factors:the decrease in the size of college age cohorts in the coming years; heightened expectations in the modes of instructional delivery through the advances of information and communication technologies (ICT); global competition for college students worldwide especially from English-speaking countries. This paper examines internationalization of higher education in Japan in terms of:foreign faculty members in Japan, foreign tertiary students in Japan, Japanese students studying abroad, branch campuses of foreign colleges and universities in Japan, off-shore campuses of Japanese colleges and universities, and cross-border higher education through e-learning.
Large--order behavior of non--decoupling effects and triviality
Kenichiro Aoki
Physics , 1993, DOI: 10.1103/PhysRevD.49.1167
Abstract: We compute some non--decoupling effects in the standard model, such as the $\rho$ parameter, to all orders in the coupling constant expansion. We analyze their large order behavior and explicitly show how it is related to the non--perturbative cutoff dependence of these non--decoupling effects due to the triviality of the theory.
On the Renormalization of the S Parameter
Sinya Aoki
Physics , 1992, DOI: 10.1016/0370-2693(92)91400-4
Abstract: We calculate the S parameter of the standard model at one loop of fermions, using three different regularizations (dimensional, Pauli-Villars and lattice) and find an extra contribution to the S parameter besides the standard one for each case. This shows that the extra contribution recently reported for the lattice regularization is {\it not} necessarily tied to the non-decoupling effect of fermion doublers. We argue that the extra contribution should be subtracted in the renormalizable perturbative expansion.
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