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Journal of Systems Science and Systems Engineering 2020年第6期29卷 675-696页

作者： takashi Hashimoto School of Knowledge Science Japan Advanced Institute of Science and Technology(JAIST)Nomi 923-1292Japan

Evolinguistics is an attempt to clarify the origins and evolution of language and communication,thereby deepening our understanding of humans from an evolutionary *** origins of language is characterized by the biological evolution of abilities related to language and communication,and the evolution of language by the structuralization and complexification of language knowledge as well as communication systems through cultural *** Evolinguistics,two idiosyncrasies of human linguistic communication are the primary focus,namely,using hierarchically organized symbol sequences in language and sharing intentions in *** believe that the integration of these two characteristics made humans co-creative and smart,and in particular gave us knowledge co-creation *** emergent constructive approach plays an important role in this research,which is a methodology to analyze complex systems by constructing and operating the evolutionary and emergent process of complex *** studies taking this approach are introduced in this *** is a language evolution experiment in a laboratory to consider the process,mechanisms,and neural basis of symbolic communication *** other is an evolutionary simulation of recursive combination,which is thought of as the essential ability to form hierarchical structures.A hypothesis integrating intention sharing and recursive combination is discussed as an abductive reasoning mechanism for understanding others intentions.

关键词： Evolinguistics origins and evolution of language hierarchy intention sharing symbolic communication recursive combination abduction

A time-space network based international transportation scheduling problem incorporating CO_2 emission levels

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第12期11卷 927-932页

作者： takashi IROHARA Department of Information and Communication Sciences Faculty of Science and TechnologySophia University

Environmental problems have received a great deal of attention in recent *** particular,CO2 emissions worsen global warming and other environmental *** transport sector accounts for 20% of the total CO2 ***,the CO2 emission reduction of the transport sector is of great *** order to reduce emissions effectively,it is necessary to change the distribution and transportation *** purpose of this study is to minimize both the transportation costs and CO2 emissions during *** model considers a transportation scheduling problem in which loads are transported from an overseas production base to three domestic demand *** need for time-space networks arises naturally to improve the *** is possible to know the distance carriers are moving,and also consider the timetables of carriers during *** choice,less-than carrier load,and domestic transportation among demand centers are considered as the three target areas to reduce CO2 emissions during the distribution *** research model was formulated as a mixed integer programming (MIP) *** achieves cost reduction,and will contribute to improvement of the natural environment.

关键词： Time-space network Timetable Transportation scheduling problem Mixed integer programming (MIP) problem Less-than carrier load

NUMERICAL PREDICTION OF DYNAMIC PERFORMANCE OF PELTON TURBINE

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Journal of Hydrodynamics 2007年第3期19卷 356-364页

作者： KUBOTA takashi College of Electric Power South China University of Technology Guangzhou 510640 China

Different from the reaction turbines, the hydraulic performance of Pelton turbine is dynamic due to the unsteady flow in the rotating buckets in time and space. The dynamic energy efficiency of bucket ηεB and power efficiency of bucket ηPB within a short period can be predicted from the dynamic flow pattern of the free-surface sheet flow in the rotating bucket, whereas the dynamic discharge efficiency of bucket ηQB is defined as the resident discharge in the bucket at the respective moment. Under the operation of higher unit speed non than the optimum one, the power efficiency of bucket is deteriorated by the jet interference with the rear surface of bucket △Prear at the first stage of the dynamic performance, as well as the loss power due to the spilt flow from the cutout of bucket at the later stage of performance. Based on the dynamic performance prediction presented, the future possibility of the quantitative investigation for the negative scale effect of Pelton turbines was discussed.

关键词： dynamic energy efficiency dynamic discharge efficiency dynamic power efficiency rotating bucket Pelton turbine

Behavior of Surrounding Soil during Construction and Its Countermeasures Using Pipe Jacking Method in Deep Strata

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Open Journal of Geology 2013年第2期3卷 44-48页

作者： takashi Senda Hideki Shimada takashi Sasaoka Kikuo matsui Department of Earth Resources Engineering Kyushu University Fukuoka Japan

In Japan when urban infrastructures need to be constructed, the difficulty of utilizing the ground or shallow strata will lead to a more frequent use of the deep strata. The common construction methods are open-cut, pipe jacking, and shield methods. In recent years, a new pipe jacking method has been established that can be adapted to 20 m below the ground or more. Using this method, the drivage machine and the jacking pipe continue to move an underground until the completion of the driving. Therefore an over-cutting area (so-called tail-void) must be formed to lower the friction between the ground and the pipe. The tail-void is filled with lubrications. However, because the stress release from the ground continues to advance when the tail-void is formed, hence there are some challenges required to cope with the stability of the surrounding ground. In order to utilize the pipe jacking method in the deeper strata layers, the theory, analysis and installation of tail-void have to be systemized, and such systematic data must be stored. Therefore, the conditions of tail-void in the deep pipe jacking method are discussed using numerical analyses.

关键词： Pipe Jacking System Deep Strata Tail-Void

Can early precut reduce post-endoscopic retrograde cholangiopancreatography pancreatitis in patients with difficult bile duct cannulation?

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World Journal of Gastrointestinal Endoscopy 2024年第9期16卷 519-525页

作者： Tomohiro Tanikawa Keisuke Miyake Mayuko Kawada Katsunori Ishii takashi Fushimi Noriyo Urata Nozomu Wada Ken Nishino Mitsuhiko Suehiro Miwa Kawanaka Hidenori Shiraha Ken Haruma Hirofumi Kawamoto Department of General Internal Medicine 2 Kawasaki Medical SchoolOkayama 7008505Japan

BACKGROUND Endoscopic retrograde cholangiopancreatography(ERCP)is associated with a variety of adverse events(AEs).One of the most important AEs is post-ERCP pancreatitis(PEP),which is most common in cases of difficult biliary *** the precut technique has been reported as a PEP risk factor,recent studies indicate that early precut could reduce PEP,and that precut itself is not a risk *** To evaluate the safety of the precut technique,especially in terms of *** We conducted a retrospective study,spanning the period from November 2011 through December *** included 1556 patients,aged≥20 years,who underwent their initial ERCP attempt for biliary disease with a naïve papilla at the Kawasaki University General Medical *** compared the PEP risk between the early precut and the delayed precut *** The PEP incidence rate did not significantly differ between the precut and nonprecut ***,the PEP incidence was significantly lower in the early precut group than the delayed precut group(3.5%vs 10.5%;P=0.02).The PEP incidence in the delayed precut group without pancreatic stent insertion(17.3%)was significantly higher compared to other cases(P<0.01).CONCLUSION Our findings indicate that early precut may reduce PEP *** the precut decision is delayed,a pancreatic stent should be inserted to prevent PEP.

关键词： Endoscopic retrograde cholangiopancreatography Post-endoscopic retrograde cholangiopancreatography pancreatitis Precut Needle-knife precut papillotomy

Analysis of shopping behavior characteristics in the Keihanshin metropolitan area in Japan based on a person trip survey

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Geo-Spatial Information Science 2020年第4期23卷 305-315页

作者： takashi Yamada Takumi Hayashida Department of Human Factors Engineering and Environmental Design Faculty of Biology-Oriented Science and TechnologyKindai UniversityKinokawaWakayamaJapan

This study analyzed weekday shopping behavior from a home base to a destination using data from the 4th Keihanshin metropolitan area person trip *** first analyzed the relationships between occupation and transportation means,transportation means and travel time,and transportation means and duration of time at the *** of a chi-square test,residual analysis,and correspondence analysis confirmed that employed persons tend to travel by cars while unemployed persons tend to travel by bus or *** relationship between travel time and duration of time at the destination was also revealed according to transportation *** of a cluster analysis then classified shopping behaviors to expose four ***,multiple regression analyzed the degree to which certain variables were related to duration of time at the *** confirmed a strong relationship between duration of time at the destination and travel *** degree of this factor’s influence on other variables was also *** value of these findings is that the relationship between travel time by means of transportation and the duration of time at the destination was clarified using statistical *** then found a highly accurate equation that estimates the duration of time at a destination from the travel *** the duration of time at a destination can be estimated,it may be possible to more accurately develop the structure of rest facilities,the number of parking lots,the degree of congestion,and so on,which can be associated with the customer’s usage behavior in a shopping *** research in this paper contributes to the field of urban analysis and marketing by presenting a new effective method for person trip survey and analysis.

关键词： Person trip survey shopping behavior transportation means travel time duration of time at a destination

Lateral Stress Concentration in Localized Interlayer Rock Stratum and the Impact on Deep Multi-Seam Coal Mining

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International Journal of Geosciences 2013年第9期4卷 1248-1255页

作者： Mingwei Zhang Hideki Shimada takashi Sasaoka Kikuo matsui Department of Earth Resources Engineering Faulty of Engineering Kyushu University Fukuoka Japan

To explore the impact of lateral stress concentration in interlayer rock stratum on the exploitation of protected coal seam, a field experiment was carried out in a multi-seam mining structure. Lateral stress redistribution and interlayer rock failure behavior were surveyed. Then an assistant numerical investigation was implemented to evolve the effect of liberated seam mining and its influence on stress reconstruction in surrounding rock mass. The cause of lateral stress concentration and its impact were discussed finally. Key findings turn out that a certain lateral stress increases in interlayer rock stratum and concentrates on its lower region. Lateral stress concentration and interlayer rock failure are interactional. The former is an inducing factor of the latter;the latter promotes the increase of concentration degree. Extent of lateral stress concentration increases to the maximum as seam distance is about 50 m. But the efficacy of liberated seam mining decreases as the seam spacing gets larger. Protected seam mining is then classified based upon the impact of lateral stress concentration, which helps to prevent the rock burst hazard and then to achieve a reliable mining in deep mines.

关键词： Lateral Stress Concentration Interlayer Rock Stratum Multi-Seam Coal Mining Stress Relaxation Zone Floor Failure Behavior

A GAN-based temporally stable shading model for fast animation of photorealistic hair

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Computational Visual Media 2021年第1期7卷 127-138页

作者： Zhi Qiao takashi Kanai Department of General Systems Studies Graduate School of Arts and SciencesThe University of TokyoTokyoJapan

We introduce an unsupervised GANbased model for shading photorealistic hair *** model is much faster than previous rendering algorithms and produces fewer artifacts than other neural image translation *** main idea is to extend the Cycle-GAN structure to avoid semitransparent hair appearance and to exactly reproduce the interaction of the lights with the *** use two constraints to ensure temporal coherence and highlight *** approach outperforms and is computationally more efficient than previous methods.

关键词： hair animation fast shading neural networks

Relation between Fluidability of Flyash Cement and Properties of Flyash Particles

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Open Journal of Geology 2013年第3期3卷 216-221页

作者： Hideki Shimada Akihiro Hamanaka takashi Sasaoka Kikuo matsui Department of Earth Resources Engineering Kyushu University Fukuoka Japan

A large amount of waste is produced by preparation plants. The properties of the waste vary depending on the mineralogical contents of the mother rock in which the coal is embedded. The waste quality depends on the method of mining and cleaning. The waste mainly consists of clays, quartz, carbonaceous materials, mica, pyrites, and so on. About 80% of coal-ash is now utilized and the remainder is disposed of at disposal sites. However, the life span of disposal sites is limited, and it is difficult to find new disposal sites. It is therefore requested that the percentage of utilized flyash be increased in all applicable fields in Japan. Thus, it is very desirable that cement supplemented with flyash be used as injection material for natural/artificial openings. With this perspective in mind, we attempt to clarify how much the size and shape of the flyash affects the properties of the injection mixture by way of an injection test.

关键词： Flyash Fluidability Particle Size Particle Shape

Numerical Study on an Applicable Underground Mining Method for Soft Extra-Thick Coal Seams in Thailand

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Engineering（科研） 2012年第11期4卷 739-745页

作者： Nay Zarlin takashi Sasaoka Hideki Shimada Kikuo matsui Department of Earth Resources Engineering Kyushu University Fukuoka City Japan

The EGAT Mae Moh Mine is the largest open pit lignite mine in Thailand and it produces lignite about 16 million tons annually. In the near future, the pit limit of the mine will be reached and underground mine will then be developed through the open pit in the depth of 400 - 600 m from the surface. However, due to the challenges for underground mining such as poor geological conditions, extra thickness (20 - 30 m) of coal seams, and weak mechanical properties of coal seams and the surrounding rock, the success possibility of underground mining and an applicable underground mining method is being investigated at the present. The paper discusses the applicability of multi-slice bord-and-pillar method for the soft extra thick coal seams in the Mae Moh mine by means of numerical analyses using the 3D finite difference code “FLAC3D”.

关键词： Multi-Slice Bord-and-Pillar Method Soft Extra-Thick Coal Seams Numerical Analyses Flac3D