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1.
We present a novel switching median filter for the removal of random-valued impulse noise on a color image. The present filter consists of a new noise detector with auto-tuning function, and a vector type noise remover avoiding the occurrence of the color artifacts after the noise removal. The detector has a parameter, which is automatically tuned only by using the distribution information of the noise signal without any training signals, and detects the pixel corrupted by the random-valued impulse noise with the parameter. And the detector operates in each channel independently. As a noise remover, the ordinary vector median filter is employed to interpolate only the pixel which is detected as noisy one by the detector. Through the experiments using some digital color images, the validity and the effectiveness of the present method are verified. 相似文献
2.
Hayao Ozaki Atsushi Kubota Toshiharu Natsume Jeremy P. Loenneke Takashi Abe Shuichi Machida 《Journal of sports sciences》2018,36(6):691-696
To investigate the effects of a single high-load (80% of one repetition maximum [1RM]) set with additional drop sets descending to a low-load (30% 1RM) without recovery intervals on muscle strength, endurance, and size in untrained young men. Nine untrained young men performed dumbbell curls to concentric failure 2–3 days per week for 8 weeks. Each arm was randomly assigned to one of the following three conditions: 3 sets of high-load (HL, 80% 1RM) resistance exercise, 3 sets of low-load [LL, 30% 1RM] resistance exercise, and a single high-load (SDS) set with additional drop sets descending to a low-load. The mean training time per session, including recovery intervals, was lowest in the SDS condition. Elbow flexor muscle cross-sectional area (CSA) increased similarly in all three conditions. Maximum isometric and 1RM strength of the elbow flexors increased from pre to post only in the HL and SDS conditions. Muscular endurance measured by maximum repetitions at 30% 1RM increased only in the LL and SDS conditions. A SDS resistance training program can simultaneously increase muscle CSA, strength, and endurance in untrained young men, even with lower training time compared to typical resistance exercise protocols using only high- or low-loads. 相似文献
3.
Teruzo Kubota 《Learned Publishing》2001,14(2):139-143
The market for electronic journals and CD-ROMs in Japan is analysed. The electronic journal is changing the roles of the main players: publishers, libraries, and agents. Publishers go directly to libraries, while agents are trying to survive as coordinators for libraries to finalize licence agreements. CD-ROMs are selling as an alternative to books although not all the advantages of their digital format are yet being fully exploited. The time, however, is close when CD-ROMs will generate revenue by usage through a campus local area network. 相似文献
4.
格尔诺特·伯梅重视城市气氛的重要性以及城市居民对气氛的主观经验.人们既可以通过视觉感知气氛,也可以通过听觉与触觉感知.城市气氛主要包括联觉性气氛与社会性气氛,它虽然被主观感知,但具有准客观性.人类是自然的一部分,气氛能够影响自然,可以根据城市居民的感受来营造城市气氛,并规划和保护城市环境,保障城市魅力. 相似文献
5.
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6.
Ryosuke Fujinuma Laura A. Wendling 《International Journal of Science Education》2013,35(17):2906-2922
There is a tendency for lecture-based instruction in large introductory science courses to strongly focus on the delivery of discipline-specific technical terminology and fundamental concepts, sometimes to the detriment of opportunities for application of learned knowledge in evidence-based critical-thinking activities. We sought to improve student performance on evidence-based critical-thinking tasks through the implementation of peer learning and problem-based learning tutorial activities. Small-group discussions and associated learning activities were used to facilitate deeper learning through the application of new knowledge. Student performance was assessed using critical-thinking essay assignments and a final course exam, and student satisfaction with tutorial activities was monitored using online surveys. Overall, students expressed satisfaction with the small-group-discussion-based tutorial activities (mean score 7.5/10). Improved critical thinking was evidenced by improved student performance on essay assignments during the semester, as well as a 25% increase in mean student scores on the final course exam compared to previous years. These results demonstrate that repeated knowledge application practice can improve student learning in large introductory-level science courses. 相似文献
7.
Hunter M. Breland Despina O. Danos Helen D. Kahn Melvin Y. Kubota Marilyn W. Bonner 《Journal of Educational Measurement》1994,31(4):275-293
To explore a phenomenon of gender differences in Advanced Placement examinations, random samples of free-response test booklets were taken from the 1986 examination in U.S. History. These examinations were chosen because they consistently show significant gender differences in objective scores but no gender differences in free-response scores. A rescoring of the free responses was conducted that focused on their historical content. This rescoring was conducted by readers other than those who conducted the original scoring and involved tallies of specific historical points made, supporting evidence given, and factual errors. Ratings were also made of handwriting quality, neatness, and English composition quality of the free responses. Analyses conducted indicate that free-response tasks of the type examined may have inherent characteristics that reward English composition abilities, and that some females may compensate for inferior historical knowledge with superior English composition abilities. 相似文献
8.
The purpose of this study was to examine the relationships between (a) novelty and exploratory behavior, (b) novelty and cognitive learning, and (c) exploratory behavior and cognitive learning in science museums. Sixty-four sixth-grade public school students participated in a posttest-only control group design. The control group received a treatment designed to decrease the novelty of a field trip setting through a vicarious exposure while the placebo group received an informative but not novelty-reducing treatment. Both groups then visited the field site where they were videotaped. Statistical analyses were conducted on both dependent variables with socioeconomic status and academic achievement as covariates, novelty-reducing preparation as the independent variable, and gender as moderator variable. Exploratory behavior was shown to be positively correlated with cognitive learning. Significant differences were detected for exploratory behavior. For both dependent variables, gender by treatment group interaction was significant with novelty-reducing preparation shown to be highly effective on boys but having no effect on girls. 相似文献
9.
Fatigue and fracture behavior of nickel-based superalloy Inconel 718 up to the very high cycle regime 总被引：2，自引：0，他引：2
Xian-feng Ma Zheng Duan Hui-ji Shi Ryosuke Murai Eiichi Yanagisawa 《浙江大学学报(A卷英文版)》2010,11(10):727-737
The fatigue and fracture behavior of nickel-based superalloy Inconel 718 was investigated up to the very high cycle regime under rotary bending tests at room temperature. It was found that this superalloy can still fracture after exceeding 107 cycles. Fractographic analysis revealed that there was a transition from fatigue crack initiation at multi-sites to single initiation with decreasing stress levels. The fracture surface can be divided into four areas according to the appearance, associated with fracture mechanics analysis of the corresponding stress intensity factors. The fracture mechanism dominant in each area was disclosed by scanning electron microscope examination and analyzed in comparison with those obtained from the crack growth tests. Subsequently, life prediction modeling was proposed by estimating the crack initiation and propagation stage respectively. It was found that Chan （2003）＇s model for initiation life and the Paris law for growth life can provide comparable predictions against the experimental life. 相似文献
10.
CHON Jaechoon LEE Yang-Won SHIBASAKI Ryosuke 《浙江大学学报(A卷英文版)》2006,7(7):1259-1265
INTRODUCTION The visualization of roadside buildings in virtual space using synthetic photorealistic view is one of the common methods for representing the background scene of Car Navigation Systems (CNS) and Internet map services. Since most of these background scenes are implemented by two-dimensional (2D) images, they may give somewhat monotonous impression due to fixed viewpoint position and orientation. For more interactive visualizations that enable arbitrary ad- justment of the … 相似文献