How to speed up to be in time: Action-judgment dissociations in children and adults

2004 ◽  
Vol 63 (1) ◽  
pp. 17-29 ◽  
Author(s):  
Friedrich Wilkening ◽  
Claudia Martin
Keyword(s):  
Rating Scale ◽  
Constant Speed ◽  
Linear Condition ◽  
Speed Up ◽  
Nonlinear Condition ◽  
Speed Change ◽  
Catch Up ◽  
Normative Rule ◽  
Judgment Condition ◽  
Time Linear

Children 6 and 10 years of age and adults were asked how fast a toy car had to be to catch up with another car, the latter moving with a constant speed throughout. The speed change was required either after half of the time (linear condition) or half of the distance (nonlinear condition), and responses were given either on a rating scale (judgment condition) or by actually producing the motion (action condition). In the linear condition, the data patterns for both judgments and actions were in accordance with the normative rule at all ages. This was not true for the nonlinear condition, where children’s and adults’ judgment and also children’s action patterns were linear, and only adults’ action patterns were in line with the nonlinearity principle. Discussing the reasons for the misconceptions and for the action-judgment dissociations, a claim is made for a new view on the development of children’s concepts of time and speed.

scholarly journals Newborns’ sensitivity to speed changes as a building block for animacy perception

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Elisa Di Giorgio ◽  
Marco Lunghi ◽  
Giorgio Vallortigara ◽  
Francesca Simion
Keyword(s):  
Attentional Bias ◽  
Building Block ◽  
Visual Cues ◽  
Constant Speed ◽  
Attentional Biases ◽  
Visual Preference ◽  
Reverse Sequence ◽  
Motion Speed ◽  
Speed Change ◽  
First Time

AbstractThe human visual system can discriminate between animate beings vs. inanimate objects on the basis of some kinematic cues, such as starting from rest and speed changes by self-propulsion. The ontogenetic origin of such capability is still under debate. Here we investigate for the first time whether newborns manifest an attentional bias toward objects that abruptly change their speed along a trajectory as contrasted with objects that move at a constant speed. To this end, we systematically manipulated the motion speed of two objects. An object that moves with a constant speed was contrasted with an object that suddenly increases (Experiment 1) or with one that suddenly decreases its speed (Experiment 2). When presented with a single speed change, newborns did not show any visual preference. However, newborns preferred an object that abruptly increases and then decreases its speed (Experiment 3), but they did not show any visual preference for the reverse sequence pattern (Experiment 4). Overall, results are discussed in line with the hypothesis of the existence of attentional biases in newborns that trigger their attention towards some visual cues of motion that characterized animate perception in adults.

scholarly journals Newborns’ sensitivity to speed changes as a building block for animacy perception

2020 ◽  
Author(s):  
Elisa Di Giorgio ◽  
Marco Lunghi ◽  
Giorgio Vallortigara ◽  
Francesca Simion
Keyword(s):  
Attentional Bias ◽  
Building Block ◽  
Visual Cues ◽  
Constant Speed ◽  
Attentional Biases ◽  
Visual Preference ◽  
Reverse Sequence ◽  
Motion Speed ◽  
Speed Change ◽  
First Time

AbstractThe human visual system can discriminate between animate beings vs. inanimate objects on the basis of some kinematic cues, such as starting from rest and speed changes by self-propulsion. The ontogenetic origin of such capability is still under debate. Here we investigate for the first time whether newborns manifest an attentional bias toward objects that abruptly change their speed along a trajectory as contrasted with objects that move at a constant speed. To this end, we systematically manipulated the motion speed of two objects. An object that moves with a constant speed was contrasted with an object that suddenly increases (Experiment 1) or with one that suddenly decreases its speed (Experiment 2). When presented with a single speed change, newborns did not show any visual preference. However, newborns preferred an object that abruptly increases and then decreases its speed (Experiment 3), but they did not show any visual preference for the reverse sequence pattern (Experiment 4). Overall, results are discussed in line with the hypothesis of the existence of attentional biases in newborns that trigger their attention towards some visual cues of motion that characterized animate perception in adults.

scholarly journals Shear Stress and Hemolysis Analysis of Blood Pump under Constant and Pulsation Speed Based on a Multiscale Coupling Model

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Shuai Wang ◽  
Jianping Tan ◽  
Zheqin Yu
Keyword(s):  
Shear Stress ◽  
Flow Field ◽  
Coupling Model ◽  
The Body ◽  
Constant Speed ◽  
Blood Pump ◽  
Model Combining ◽  
Speed Change ◽  
Ventricular Motion ◽  
Speed Mode

Current researches show that the constant speed mode adopted by the existing commercial blood pump may cause damage to the body. The way to solve this problem is to produce pulsating flow by changing the speed of the blood pump’s impeller. But at present, the flow field of the blood pump is not clear, when it changes speed, and the coupling between blood pump and body has not been considered in the simulation of the flow field. A multiscale coupling model combining hemodynamics (0D) and Computational Fluid Dynamics (3D) was established in this paper to solve the problem, and a speed change curve consistent with the ventricular motion was selected. The hemodynamics, shear stress, and hemolysis changes of 6000 rpm at different amplitude (2000, 3000, and 4000 rpm) were simulated, analyzed, and compared with the constant speed (7000 rpm). The results show that the pressure difference obtained by simulation is consistent with the experimental results, and the flow generated by the natural heart still flows through the blood pump, thus changing the working point of the blood pump. When the blood pump works at the changing speed, it could produce more pulsation, and the shear stress and hemolysis in the blood pump increase with the rising of speed and flow. But according to the hemolysis score of a single cardiac cycle, the hemolysis value of the changing speed model at an amplitude of 4000 rpm is only 11.71% higher than that of constant speed at 7000 rpm.

The Future of Industry in Zambia: Will Engagement with India mean a New Phase of Development?

2019 ◽  
pp. 22-35
Author(s):  
Kamini Krishna
Keyword(s):  
Human Resources ◽  
Global Economy ◽  
Economic Transformation ◽  
Secretary General ◽  
Indian Government ◽  
Trade Relations ◽  
The Poor ◽  
Speed Up ◽  
Catch Up ◽  
New Phase

Voices in both African and international communities argue that African industrialization has to catch up with the global economy. The former United Nations Secretary General, Ban Ki-Moon, once commented that the industrialization needs to speed up in Africa so that it can act as a stimulus for economic transformation in the continent. Additionally, it is a proven fact that countries cannot sustain themselves by being only consumers, and that they can only prosper if they also engage in production. Both India and Zambia experienced colonial economic plunder, for years and both countries felt that industrialization was required in their countries which contributes extensively for the eliminating of poverty; which raises productivity, create employment, enhance the income generated assets of the poor and helps to diversify exports. After Zambia achieved independence in 1964, the governments of India and Zambia aimed to strengthen their trade relations. The target of the Indian government towards the enhancement of the Zambian economy is not only concentrated on the trade alone but also in the promotion of both human resources and industries to elevate poverty as well. The article investigates the existing trade relations between India and Zambia and examines the benefit acquired by the Zambian people. It also explores the possibility enhancing trade and establishing more industries by Indian companies, the Indian Community and by the Indian government in Zambia.

scholarly journals Vectorizing posit operations on RISC-V for faster deep neural networks: experiments and comparison with ARM SVE

2021 ◽  
Author(s):  
Marco Cococcioni ◽  
Federico Rossi ◽  
Emanuele Ruffaldi ◽  
Sergio Saponara
Keyword(s):  
Neural Networks ◽  
Open Source ◽  
Deep Neural Networks ◽  
Number System ◽  
Information Representation ◽  
Processor Architecture ◽  
Speed Up ◽  
Catch Up ◽  
Logic Operations ◽  
Matrix Vector

AbstractWith the arrival of the open-source RISC-V processor architecture, there is the chance to rethink Deep Neural Networks (DNNs) and information representation and processing. In this work, we will exploit the following ideas: i) reduce the number of bits needed to represent the weights of the DNNs using our recent findings and implementation of the posit number system, ii) exploit RISC-V vectorization as much as possible to speed up the format encoding/decoding, the evaluation of activations functions (using only arithmetic and logic operations, exploiting approximated formulas) and the computation of core DNNs matrix-vector operations. The comparison with the well-established architecture ARM Scalable Vector Extension is natural and challenging due to its closedness and mature nature. The results show how it is possible to vectorize posit operations on RISC-V, gaining a substantial speed-up on all the operations involved. Furthermore, the experimental outcomes highlight how the new architecture can catch up, in terms of performance, with the more mature ARM architecture. Towards this end, the present study is important because it anticipates the results that we expect to achieve when we will have an open RISC-V hardware co-processor capable to operate natively with posits.

Normative Rule Extraction from Implicit Learning into Explicit Representation

2020 ◽  
Author(s):  
Mohd Rashdan Abdul Kadir ◽  
Ali Selamat ◽  
Ondrej Krejcar
Keyword(s):  
Implicit Learning ◽  
Learning Algorithm ◽  
Rule Extraction ◽  
Coordination Mechanism ◽  
Autonomous Agent ◽  
Q Learning ◽  
State Action ◽  
Speed Up ◽  
Multi Agent ◽  
Normative Rule

Normative multi-agent research is an alternative viewpoint in the design of adaptive autonomous agent architecture. Norms specify the standards of behaviors such as which actions or states should be achieved or avoided. The concept of norm synthesis is the process of generating useful normative rules. This study proposes a model for normative rule extraction from implicit learning, namely using the Q-learning algorithm, into explicit norm representation by implementing Dynamic Deontics and Hierarchical Knowledge Base (HKB) to synthesize useful normative rules in the form of weighted state-action pairs with deontic modality. OpenAi Gym is used to simulate the agent environment. Our proposed model is able to generate both obligative and prohibitive norms as well as deliberate and execute said norms. Results show the generated norms are best used as prior knowledge to guide agent behavior and performs poorly if not complemented by another agent coordination mechanism. Performance increases when using both obligation and prohibition norms, and in general, norms do speed up optimum policy reachability.

scholarly journals Alice is not missing wonderland the eastward enlargement of the European Union

2005 ◽  
Vol 50 (165) ◽  
pp. 33-53
Author(s):  
Miroslav Prokopijevic
Keyword(s):  
Rule Of Law ◽  
Eu Enlargement ◽  
Unintended Consequences ◽  
The European Union ◽  
The Rule Of Law ◽  
Accession Countries ◽  
Speed Up ◽  
Catch Up ◽  
Gdp Gap ◽  
The Eu

In this paper I will try to show that the EU enlargement from 2004 is not a good economic move for eight newcomers from Central and Eastern Europe (CEECs). It is unlikely that newcomers will get larger FDI, speed up their economic growth and catch up with richer EU countries, although this was broadly advertised both academically and by the EU "propaganda for happiness." The EU subsidies, intended to offset accession costs, turn out to be useless if not damaging for acceding economies, because they change the structure of incentives. So, instead of being rewarded for accession accession countries are going to be punished twice. Firstly, by lower FDI and a persisting GDP gap. Secondly, by getting subsidies which worsen the situation. CEECs would be better off staying outside the EU and continuing to improve economic freedom and the rule of law. But even after they have acceded, there is still some space for reasonable objectives of the CEECs due to unintended consequences of the socialist enlargement design.

Mothers with anorexia nervosa who underfeed their children: their recognition and management

1998 ◽  
Vol 28 (1) ◽  
pp. 93-108 ◽  
Author(s):  
G. F. M. RUSSELL ◽  
J. TREASURE ◽  
I. EISLER
Keyword(s):  
Anorexia Nervosa ◽  
Rating Scale ◽  
Term Treatment ◽  
Partial Recovery ◽  
Family Approach ◽  
Long Term Treatment ◽  
Mother And Child ◽  
Catch Up ◽  
Height For Age ◽  
Weight For Age

Background. Women with anorexia nervosa have a reduced fertility but they may have borne children before the onset of their illness or after partial recovery. Little is known on how to identify the anorexic mothers who underfeed their children and how to manage them. This article aims to remedy these gaps.Methods. The clinical scientific method is the only means of identifying the children of anorexic mothers who are at risk. Eight such mothers were identified as a result of obtaining serial measurements of the children's weights and heights over time. Tanner–Whitehouse charts were used to plot weight for age and height for age. A simple rating scale was devised to measure the acceptance of treatment involving both mother and child.Results. Nine children (eight boys and one girl) were found to have suffered food deprivation: with severe reduction in weight-for-age in six and in height-for-age in eight. Five siblings were not affected. Catch-up growth was correlated with the degree of engagement in treatment of both mother and child. Long-term treatment of one mother, combining family therapy with admissions to hospital, resulted in catch-up growth in her two sons.Conclusions. The mechanisms underlying the privation of the children stem from the anorexic mother's abnormal concerns with body size extending to her children. The children may become unduly accepting of the underfeeding. It is essential to obtain the confidence of anorexic mothers suspected of underfeeding their children and to adopt a whole family approach to treatment.

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