Petrological study of the western Iratsu mass from the Sambagawa metamorphic belt, central Shikoku, Japan     

厉子龙  TAKASU Akira 《浙江大学学报(A卷英文版)》2005,6(7):649-655

The western Iratsu mass, the largest tectonic body in the Sambagawa metamorphic belt, central Shikoku, is mainly composed of epidote amphibolite with minor amounts of eclogite. Systematically, a majority of garnets show bell-shaped chemical zoning of pyrope contents and Mg/(Mg Fe2 ) monotonously increasing outward. The grossular component in zonal garnet increases outwards, maximizes at an intermediate part, and then decreases towards the outermost rim, reflecting a process from increasing to decreasing pressure conditions during the prograde metamorphism. Jadeite contents of omphacite range from 25～20mole% within the cores to 15～10 mole% at the rims, implying a pressure-decreasing process (from 11 × 105 Pa to 8 × 105 Pa). The peak pressure-temperature (P-T) condition of 630～680 ℃ and ca. 15× 105 Pa in the western Iratsu mass is much higher than that of (610±25) ℃ and (10± 1)× 105 Pa of the Sambagawa oligoclase-biotite zone schists. The authors suggest a clockwise P-T-t path for the western Iratsu mass.  相似文献   

The effects of signaling the US in backward conditioning: A shift from excitatory to inhibitory learning     

John C. Dolan  Akira Shishimi  Allan R. Wagner 《Learning & behavior》1985,13(3):209-214

The associative effects of “backward” US-CS pairings were compared when the pairing occasions were either consistently preceded by a well-trained CS+ or were unannounced. The investigation employed a conditioned emotional response procedure with rats, under conditions in which all subjects received the same schedule of shock USs, some signaled and others not, and the back-ward CS was arranged to follow either the former or the latter, in separate groups. The major finding was that although the backward CS became excitatory when it followed unsignaled USs, it became inhibitory when it followed signaled USs. This outcome, which is in line with prior findings of Wagner and Terry (1975), is in accordance with a “sometimes-opponent-process” model proposed by Wagner (1981). It is contrary to data reported by Fowler, Kleiman, and Lysle (1984) that may have resulted from a confounding of the different circumstances of backward conditioning with differences in the predictability of the US in the experimental context.  相似文献   

What makes international students satisfied with a Japanese university?     

Tamaoka  Katsuo  Ninomiya  Akira  Nakaya  Ayami 《Asia Pacific Education Review》2003,4(2):119-128

The present study investigated the satisfaction of international students. The factor analysis revealed the three factors of ‘learning and research’, ‘living and adaptation’ and ‘Japanese language ability’. The ten variables were used to predict the satisfaction of international students and found five significant variables in predicating the satisfaction of international students. These were suitability of curriculum, progress of research, having a good friend, cultural adaptation and part-time work. Among these, the suitability of the curriculum was the most significant predictor. Furthermore, the path analysis for learning and research indicated significant mutual causal relationships between research progress and supervisor’s advice. The level of Japanese language skills is not necessarily required to receive advice from their supervisors, although Japanese language skills help to understand the content of classes.  相似文献   

Book review     

Wilbert Pronovost  Akira Sanbonmatsu 《Communication quarterly》2013,61(3):57-60

ESSAYS IN HONOR OF CLAUDE M. WISE, edited by Arthur Bronstein, Claude Shaver and Cj Stevens, New York: Speech Association of America 1970; pp. 235, $7.50.

SOW THE WIND, REAP THE WHIRLWIND: HEADS OF STATE ADDRESS THE UNITED NATIONS. 2 Vols. Edited by Michael H. Prosser. New York: William Morrow and Company, Inc., 1970; pp. 1467. $100.00.  相似文献   

Net efficiency of roller skiing with a diagonal stride   总被引：1，自引：0，他引：1  

Nakai A  Ito A 《Journal of sports sciences》2011,29(4):423-429

The aims of this study were: (a) to determine net efficiency during roller skiing with a diagonal stride at various speeds; (b) to assess the development of net efficiency across speeds; and (c) to examine the characteristics of efficiency in diagonal roller skiing. Two-dimensional kinematics and oxygen uptake were determined in eight male collegiate cross-country ski athletes who roller skied with the diagonal stride at various speeds on a level track. Net efficiency was calculated from rates of internal and external work and net energy expenditure. Individual net efficiency ranged from 17.7% to 52.1%. Net efficiency in the entire group of athletes increased with increasing speed, reached a maximum value of 37.3% at 3.68?m?·?s(-1), before slowly decreasing. These findings indicate that roller skiing with the diagonal stride at high speed is a highly efficient movement and that an optimal speed exists at which net efficiency can be maximally enhanced in diagonal roller skiing.  相似文献   

Contributions of processes using semantic information and character-to-sound correspondences to kanji word-reading performance in Japanese primary school children     

Ami Sambai  Mayu Tsukada  Ayaka Miki  Akira Uno 《Journal of Research in Reading》2023,46(2):163-186

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Declining symptom of academic productivity in the Japanese research university sector     

Akira Arimoto 《Higher Education》2015,70(2):155-172

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Early effects of oral administration of omeprazole and roxatidine on intragastric pH     

Iida H  Kato S  Sekino Y  Sakai E  Uchiyama T  Endo H  Hosono K  Sakamoto Y  Fujita K  Yoneda M  Koide T  Takahashi H  Tokoro C  Goto A  Abe Y  Kobayashi N  Kubota K  Gotoh E  Maeda S  Nakajima A  Inamori M 《Journal of Zhejiang University. Science. B》2012,13(1):29-34

Objective

The ideal medication for the treatment of acid-related diseases, e.g., peptic ulcers, stress-related gastric bleeding, functional dyspepsia, and gastroesophageal reflux disease, should have a rapid onset of action to promote hemostasis and relieve the symptoms. The aim of our study was to investigate the inhibitory effects on gastric acid secretion of a single oral administration of a proton pump inhibitor, omeprazole 20 mg, and an H₂-receptor antagonist, roxatidine 75 mg.

Methods

Ten Helicobacter pylori-negative male subjects participated in this randomized, two-way crossover study. Intragastric pH was monitored continuously for 6 h after single oral administration of omeprazole 20 mg and roxatidine 75 mg. Each administration was separated by a 7-d washout period.

Results

During the 6-h study period, the average pH after administration of roxatidine was higher than that after administration of omeprazole (median: 4.45 vs. 2.65; P=0.0367). Also during the 6-h study period, a longer duration of maintenance at pH above 2, 5, and 6 was observed after administration of roxatidine 75 mg than after administration of omeprazole 20 mg (median: 90.6% vs. 55.2%, P=0.0284; 43.7% vs. 10.6%, P=0.0125; 40.3% vs. 3.3%, P=0.0125; respectively).

Conclusions

In Helicobacter pylori-negative healthy male subjects, oral administration of roxatidine 75 mg increased the intragastric pH more rapidly than that of omeprazole 20 mg.  相似文献   

A three-dimensional analysis of the contributions of upper limb joint movements to horizontal racket head velocity at ball impact during tennis serving     

Satoru Tanabe  Akira Ito 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(3):418-433

In this study, we examined the relationship between upper limb joint movements and horizontal racket head velocity to clarify joint movements for developing racket head speed during tennis serving. Sixty-six male tennis players were videotaped at 200 Hz using two high-speed video cameras while hitting high-speed serves. The contributions of each joint rotation to horizontal racket velocity were calculated using vector cross-products between the angular velocity vectors of each joint movement and relative position vectors from each joint to the racket head. Major contributors to horizontal racket head velocity at ball impact were shoulder internal rotation (41.1%) and wrist palmar flexion (31.7%). The contribution of internal rotation showed a significant positive correlation with horizontal racket head velocity at impact (r = 0.490, P < 0.001), while the contribution of palmar flexion showed a significant negative correlation (r = ? 0.431, P < 0.001). The joint movement producing the difference in horizontal racket head velocity between fast and slow servers was shoulder internal rotation, and angular velocity of shoulder internal rotation must be developed to produce a high racket speed.  相似文献   

Improving relational similarity measurement using symmetries in proportional word analogies     

Danushka Bollegala  Tomokazu Goto  Nguyen Tuan Duc  Mitsuru Ishizuka 《Information processing & management》2013

Measuring the similarity between the semantic relations that exist between words is an important step in numerous tasks in natural language processing such as answering word analogy questions, classifying compound nouns, and word sense disambiguation. Given two word pairs (A, B) and (C, D), we propose a method to measure the relational similarity between the semantic relations that exist between the two words in each word pair. Typically, a high degree of relational similarity can be observed between proportional analogies (i.e. analogies that exist among the four words, A is to B such as C is to D). We describe eight different types of relational symmetries that are frequently observed in proportional analogies and use those symmetries to robustly and accurately estimate the relational similarity between two given word pairs. We use automatically extracted lexical-syntactic patterns to represent the semantic relations that exist between two words and then match those patterns in Web search engine snippets to find candidate words that form proportional analogies with the original word pair. We define eight types of relational symmetries for proportional analogies and use those as features in a supervised learning approach. We evaluate the proposed method using the Scholastic Aptitude Test (SAT) word analogy benchmark dataset. Our experimental results show that the proposed method can accurately measure relational similarity between word pairs by exploiting the symmetries that exist in proportional analogies. The proposed method achieves an SAT score of 49.2% on the benchmark dataset, which is comparable to the best results reported on this dataset.  相似文献