Waseda University

About: Waseda University is a education organization based out in Tokyo, Japan. It is known for research contribution in the topics: Large Hadron Collider & Catalysis. The organization has 24220 authors who have published 46859 publications receiving 837855 citations. The organization is also known as: Waseda daigaku & Sōdai.

Search for squarks and gluinos in final states with jets and missing transverse momentum using 36 fb-1 of s =13 TeV pp collision data with the ATLAS detector

Abstract: A search for the supersymmetric partners of quarks and gluons (squarks and gluinos) in final states containing hadronic jets and missing transverse momentum, but no electrons or muons, is presented ...

Facile Two-Step Synthesis of 1,10-Phenanthroline-Derived Polyaza[7]helicenes with High Fluorescence and CPL Efficiency

Abstract: A facile two-step synthesis of aza[7]helicenes possessing a 6-5-6-6-6-5-6 skeleton from commercially available 2,9-dichloro-1,10-phenanthroline via double amination with aniline derivatives followed by hypervalent iodine reagent-mediated intramolecular double-NH/CH couplings was developed. Single-crystal X-ray analyses of the helicenes revealed unique structures, including both a significantly twisted center and planar terminals of the skeleton. The azahelicenes show high fluorescent quantum yields (Φs) under both neutral (Φ: 0.25-0.55) and acidic conditions (Φ: up to 0.80). An enantiomerically pure aza[7]helicene showed high circularly polarized luminescence (CPL) activity under both neutral and acidic conditions (glum : up to 0.009).

Realization of dynamic biped walking stabilized by trunk motion on a sagittally uneven surface

Abstract: The authors introduce a control method for dynamic biped walking stabilized by trunk motion on a sagitally uneven surface, that is for a biped walking robot which has a trunk to stabilize its walking, and its effectiveness as supported by walking experiments using a biped walking robot. This control method is based on the introduction of a new concept called a virtual surface, to consider the ZMP (zero moment point) on an uneven surface, and the main algorithm for computing the trunk motion which compensates for lower-limbs motion and time trajectory of the arbitrarily planned ZMP on the virtual surfaces. Using this control method in a number of experiments, the biped walking robot WL-12RIII (Waseda Leg-12 Refined III) which has a trunk, realized dynamic biped walking on stairs with a step height of 0.1 m and a trapezoidal terrain with an inclination of +or-10 deg. The walking period was 2.6 sec/step on the stairs, and 1.6 sec/step on the trapezoidal terrain. So that, the effectiveness of this control method was experimentally supported. >

Ale-vms and st-vms methods for computer modeling of wind-turbine rotor aerodynamics and fluid–structure interaction

Abstract: We provide an overview of the Arbitrary Lagrangian–Eulerian Variational Multiscale (ALE-VMS) and Space–Time Variational Multiscale (ST-VMS) methods we have developed for computer modeling of wind-turbine rotor aerodynamics and fluid–structure interaction (FSI). The related techniques described include weak enforcement of the essential boundary conditions, Kirchhoff–Love shell modeling of the rotor-blade structure, NURBS-based isogeometric analysis, and full FSI coupling. We present results from application of these methods to computer modeling of NREL 5MW and NREL Phase VI wind-turbine rotors at full scale, including comparison with experimental data.