scholarly journals Iterated commutators under a joint condition on the tuple of multiplying functions

2020 ◽  
Vol 148 (11) ◽  
pp. 4797-4815
Author(s):  
Tuomas Hytönen ◽  
Kangwei Li ◽  
Tuomas Oikari
Keyword(s):  
Joint Condition ◽  
Iterated Commutators

scholarly journals EXPRESS: When Two Actors Perform Different Tasks: Still No Evidence for Shared Task-Sets in Joint Task Switching

2021 ◽  
pp. 174702182110315
Author(s):  
Motonori Yamaguchi ◽  
Husnain H. Shah ◽  
Bernhard Hommel
Keyword(s):  
Task Switching ◽  
The Other ◽  
Shared Task ◽  
Joint Condition ◽  
Task Instructions ◽  
Switch Costs ◽  
Joint Task ◽  
Task Sets ◽  
Rule Out

Two different variations of joint task switching led to different conclusions as to whether co-acting individuals share the same task-sets. The present study aimed at bridging this gap by replicating the version in which two actors performed two different tasks. Experiment 1 showed switch costs across two actors in a joint condition, which agreed with previous studies, but also yielded even larger switch costs in a solo condition, which contradicted the claim that actors represent an alternative task as their own when it is carried out by the co-actor but not when no one carries it out. Experiments 2 and 3 further examined switch costs in the solo condition with the aim to rule out possible influences of task instructions for and experiences with the other task that was not assigned to the actor. Before participants were instructed on the second of the two tasks, switch costs were still obtained without a co-actor when explicit task names (“COLOUR” and “SHAPE”) served as go/nogo signals (Experiment 2), but not when arbitrary symbols (“XXXX” and “​​​​”) served as go/nogo signals (Experiment 3). The results thus imply that switch costs depend on participants’ knowledge of task cues being assigned to two different tasks, but not on whether the other task is performed by a co-actor. These findings undermine the assumption that switch costs in the joint conditions reflect shared task-sets between co-actors in this procedure.

Norm Estimates for Iterated Commutators on the Bergman Spaces of the Unit Ball

1995 ◽  
Vol 117 (2) ◽  
pp. 523 ◽  
Author(s):  
Dashan Fan ◽  
Zhijian Wu
Keyword(s):  
Unit Ball ◽  
Bergman Spaces ◽  
Norm Estimates ◽  
Iterated Commutators

An Initial Investigation on the Potential Applicability of Non-Destructive Methods to Assessing Joint Condition in Prefabricated Structures

2016 ◽  
Vol 258 ◽  
pp. 489-492
Author(s):  
Monika Manychova ◽  
Ondřej Fuciman ◽  
Lubos Pazdera
Keyword(s):  
Physical Models ◽  
Impact Echo ◽  
Joint Condition ◽  
Load Models ◽  
Potential Applicability ◽  
Foundation Base ◽  
Application Potential ◽  
Stress States ◽  
The Impact ◽  
Non Destructive

Prefabricated structures have brought quite a new quality into the design of building construction method, which in turn required deeper theoretical knowledge, replacing empirical approaches by theory, replacing idealized and often simplified models of structure behaviour by accurate material physical models and load models. High rigidity of prefabricated concrete structures and the resulting stress states, which are mainly due to the volume change effects (temperature, humidity), effects of the foundation base shape variations etc., are among the most frequent causes of failures, particularly of joints of building elements featuring insufficient yield and bearing capacity. Investigation of all prefabricated building types shows progressing joint armature corrosion, considerable impairment of welds, which should secure the positional reliability of façade slabs.The paper presents some results of our experimental study of the application potential of the impact-echo method to the non-destructive assessment of the present joint condition in prefabricated structures.

scholarly journals Product Hardy, BMO spaces and iterated commutators associated with Bessel Schrodinger operators

2019 ◽  
Vol 68 (1) ◽  
pp. 247-289
Author(s):  
Jorge Betancor ◽  
Xuan Duong ◽  
Ji Li ◽  
Brent Wick ◽  
Dongyong Yang
Keyword(s):  
Schrödinger Operators ◽  
Schrodinger Operators ◽  
Bmo Spaces ◽  
Iterated Commutators

scholarly journals Estimates for iterated commutators of multilinear square fucntions with Dini-type kernels

2018 ◽  
Vol 2018 (1) ◽  
Author(s):  
Zengyan Si ◽  
Qingying Xue
Keyword(s):  
Iterated Commutators

scholarly journals On Bloom type estimates for iterated commutators of fractional integrals

2020 ◽  
Vol 69 (4) ◽  
pp. 1207-1230
Author(s):  
Natalia Accomazzo ◽  
Javier C. Martinez-Perales ◽  
Israel P. Rivera-Rios
Keyword(s):  
Fractional Integrals ◽  
Iterated Commutators

EFFECTS OF CONCRETE OVERLAY JOINT CONDITIONS AND STRAIN RATE ON SPLITTING TENSILE PROPERTIES

2020 ◽  
Vol 7 (2) ◽  
Author(s):  
Keita Sugimoto ◽  
Tatsuo Nishiuchi
Keyword(s):  
Tensile Strength ◽  
Strain Rate ◽  
Ground Motion ◽  
Tensile Tests ◽  
Earthquake Ground Motion ◽  
Static Case ◽  
Joint Condition ◽  
Joint Surfaces ◽  
Weak Points ◽  
Concrete Joints

In Japan, design ground motion has increased due to the frequent occurrence of large earthquakes. To improve seismic performance, dams and spillway gate piers (hereafter, piers) are being reinforced. The methods used to strengthen them include concrete overlay, jacketing, etc. On their boundaries, there are concrete joints. These joints are designed as integrated bodies. However, although no accidents have been reported, the joints may be a weak point. The purpose of this study is to understand the effects of concrete joint condition, assuming strengthening for dams and piers such as concrete overlay and jacketing. Dynamic splitting tensile tests of concrete specimens joining old and new bodies were conducted. In dynamic splitting tensile tests, the experimental parameters are the condition of joint surfaces in terms of strengthening and strain rate for earthquake ground motion. The conditions of joint surfaces are raw concrete surfaces, chipped surfaces, and surfaces with rebar insertion. Three cases of strain rate are considered, including a static case and two dynamic cases (about 1,000 μ/s and 10,000 μ/s). Test results showed all joint conditions caused a decrease in tensile strength. There was the effect of increasing tensile strength due to strain rate, regardless of joint condition. It was shown that concrete joints without adhesives might be weak points in reinforced structures.

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