Akira Watanabe

ORCID: 0000-0003-1625-4454
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About
Contact & Profiles
Research Areas
  • Coastal and Marine Dynamics
  • Ocean Waves and Remote Sensing
  • Syntax, Semantics, Linguistic Variation
  • Aeolian processes and effects
  • Natural Language Processing Techniques
  • Coastal wetland ecosystem dynamics
  • Hydrology and Sediment Transport Processes
  • Earthquake and Tsunami Effects
  • Tropical and Extratropical Cyclones Research
  • Geological formations and processes
  • Nuclear Engineering Thermal-Hydraulics
  • Language, Discourse, Communication Strategies
  • Wave and Wind Energy Systems
  • Combustion and Detonation Processes
  • Fluid Dynamics Simulations and Interactions
  • Linguistic Variation and Morphology
  • Geotechnical Engineering and Underground Structures
  • Linguistics and Discourse Analysis
  • Aquatic and Environmental Studies
  • Fluid Dynamics and Turbulent Flows
  • Gender Studies in Language
  • Computational Fluid Dynamics and Aerodynamics
  • Neural and Behavioral Psychology Studies
  • Labor Movements and Unions
  • Advanced Numerical Methods in Computational Mathematics

The University of Tokyo
2006-2023

KDDI (Japan)
2006-2020

Northeastern University
2020

Japan Society for the Promotion of Science
2015

Fukuoka Jo Gakuin University
2015

Social Insurance Saitama Chuo Hospital
2002

Kanda University of International Studies
1994-1996

Suzuka University of Medical Science
1995

Tokyo Denki University
1995

Tokyo Medical and Dental University
1995

10.1007/bf00130554 article EN Journal of East Asian Linguistics 1992-09-01

I show that negative concord involves checking of the neg-features prompted by uninterpretable focus feature items, recasting Haegeman and Zanuttini's (1991, 1996) original account in general theory checking. A key theoretical mechanism is copying, which derives core part Neg-Factorization also shown to provide foundation for notion chains defined terms occurrences. The proposed analysis supports Merchant's (2001) ellipsis, according ellipsis PF deletion requires semantic identity. discuss...

10.1162/0024389042350497 article EN Linguistic Inquiry 2004-10-01

10.1007/s11049-005-3042-4 article EN Natural Language & Linguistic Theory 2006-01-16

(1967). A Study on Sand Movement Due to Wave Action. Coastal Engineering in Japan: Vol. 10, No. 1, pp. 39-57.

10.1080/05785634.1967.11924054 article EN Coastal Engineering in Japan 1967-12-01

ABSTRACTABSTRACTA mathematical model of wave transformation over a submerged permeable breakwater is developed on the basis equations for waves bed which are newly derived under mild-slope assumption. Firstly equation governing an unsteady flow in porous medium linearized using approximate expression nonlinear friction term. Outside medium, linear theory applied. Then integration vertical direction yields two-dimensional elliptic-type analogous to impermeable bed. The can be solved...

10.1080/05785634.1989.11924515 article EN Coastal Engineering in Japan 1989-12-01

ABSTRACTABSTRACTA three-dimensional numerical model for predicting beach evolution has been developed by improving a wave calculation method and sediment transport formulas. The computation includes refraction, diffraction breaking. deformation adopts newly proposed formulas rates due to waves nearshore currents. validity of the confirmed applying it bottom topography around detached breakwater comparing results with experimental data.

10.1080/05785634.1986.11924437 article EN Coastal Engineering in Japan 1986-12-01

ABSTRACTABSTRACTA numerical model based on newly-derived mild slope equations is presented. Its accuracy verified through comparisons with analytical solutions of shoaling, refraction and diffraction. Breaking wave decay in the surf zone are also incorporated model. Good agreements shown between calculations hydraulic experiments nearshore waves around a detached breakwater jetty. Formulas for radiation stresses compound field

10.1080/05785634.1986.11924425 article EN Coastal Engineering in Japan 1986-12-01

ABSTRACTABSTRACTThis paper describes numerical models for simulating waves, currents and beach deformation. The wave-current model includes wave refraction breaking, the nonlinear effect of mean momentum convection, setup, interaction. deformation employs newly proposed formulas sediment transport rates due to waves currents. Two test calculations are made examine applicability models. Though not calibrated with measurements, shown capable producing realistic nearshore current fields deformations.

10.1080/05785634.1982.11924342 article EN Coastal Engineering in Japan 1982-12-01

This paper presents an experimental study on the interaction of twin turbulent circular jet. The velocity and static pressure jets were measured by varying distance between two nozzles. results twin-jet compared with those a jet parallel to plane wall basis principle reflected image. main are as follows : (1) interacts joints in form ellipse at downstream distance, becoming close far distance. (2) position maximum shifts from axis nozzle mid-point jets. (3) positions expressed similar curves...

10.1299/jsme1958.28.617 article EN Bulletin of JSME 1985-01-01

The characteristics of oscillatory boundary layer flow have been treated with keen interest during the last decade from various aspects. Among previous results theoretical treatment by K. Kajiura must be most important and fruitful one to advance in our knowledge on present phenomena. On other hand senior author has had a real behaviour sediment particles due fluid motion, conducted his systematic investigations movement nearshore area. aim this paper is introduce some recent at Coastal...

10.9753/icce.v11.29 article EN Coastal Engineering Proceedings 1968-01-29

Abstract. This paper claims (a) that the formal features of goal are copied onto probe in Agree operation, contra Chomsky 2000 and more line with 1998, (b) during operation participate binding a selective way, Lasnik 1999. These supported by modification Zwart's (1993, 1997) analysis complementizer agreement minimalist reworking Finer's (1984, 1985) theory switch reference. It will also be shown deleted not carried anymore when category containing them undergoes further movement. assumption...

10.1111/1467-9612.00031 article EN Syntax 2000-12-01

10.1016/s0378-3839(98)00034-9 article EN Coastal Engineering 1998-11-01

A series of laboratory experiments in an oscillatory tank was carried out to investigate the sheet flow sediment. Objectives study were determine criterion for inception flow, and evaluate sediment transport rate under condition. In order proceed with investigation, it necessary develop devices appropriate tracing particle movement, measuring extremely dense concentration moving layer flow. The chief results are: 1) criteria given by Manohar C1955) Komar Miller (1974) are both applicable...

10.1061/9780872623736.082 article EN Coastal Engineering 1984 1982-11-14

10.1007/s10831-009-9052-1 article EN Journal of East Asian Linguistics 2009-11-17

Abstract. This paper proposes that numerals are licensed by the feature [±augmented]. proposal accommodates dissociation of from plural morphology and accounts for phenomenon 1-deletion. The [±augmented] is located in # head selects a numeral its specifier. In contrast to measure phrases accompanied numerals, vague-quantity expressions shown be placed position higher than #P.

10.1111/j.1467-9612.2009.00131.x article EN Syntax 2009-09-17

This paper deals with the possibility of estimating transport rate due to irregular oscillations from a single wave that represents random velocity profile. A representative method is thus presented for this purpose. Velocity parameters required making at any location on beach are then formulated as functions local parameters. Incorporating these results, model developed prediction and its overall performance under moderate high activity conditions examined. The found be sensitive changes in...

10.1142/s0578563401000256 article EN Coastal Engineering Journal 2001-03-01

Experiments were conducted on initiation and transport rate of sheet flow under asymmetric oscillations. Values net sand rates oscillations superimposed currents also measured. In this paper, based physical interpretations, a new parameter representing the observed mechanism is derived. Using general formula then presented applied to estimating its direction; fairly good agreement with experimental results observed. It shown that newly introduced together sediment Reynolds number can well...

10.1061/9780872629332.154 article EN Coastal Engineering 1984 1993-06-24
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