Diffuser behaviour — a review of past experimental work — relevant to‐day

1974 ◽  
Vol 46 (4) ◽  
pp. 16-26 ◽  
Keyword(s):  
Experimental Work ◽  
Past Experimental Work

Probabilistic Feature Attention as an Alternative to Variables in Phonotactic Learning

2021 ◽  
pp. 1-56
Author(s):  
Brandon Prickett
Keyword(s):  
Experimental Work ◽  
Experimental Results ◽  
Phonological Acquisition ◽  
Novel Approach ◽  
Free Model ◽  
Cast Doubt ◽  
Feature Attention ◽  
Phonotactic Learning ◽  
Past Experimental Work ◽  
Algebraic Representations

Abstract Since Halle (1962), explicit algebraic variables (often called alpha notation) have been commonplace in phonological theory. However, Hayes and Wilson (2008) proposed a variable-free model of phonotactic learning, sparking a debate about whether such algebraic representations are necessary to capture human phonological acquisition. While past experimental work has found evidence that suggested a need for variables in models of phonology (Berent et al. 2012, Moreton 2012, Gallagher 2013), this paper presents a novel mechanism, Probabilistic Feature Attention (PFA), that allows a variable-free model of phonotactics to predict a number of these phenomena. Additionally, experimental results involving phonological generalization that cannot be explained by variables are captured by this novel approach. These results cast doubt on whether variables are necessary to capture human-like phonotactic learning and provide a useful alternative to such representations.

scholarly journals Improvisation as a Way of Knowing

2016 ◽  
Vol 22 (4) ◽  
Author(s):  
Andrew J. Goldman
Keyword(s):  
Experimental Work ◽  
Ways Of Knowing ◽  
Training Methods ◽  
Performance Practices ◽  
Musical Structures ◽  
Way Of Knowing ◽  
And Performance ◽  
Past Experimental Work ◽  
Action Coupling ◽  
Perception Action

This paper proposes a theory of improvisation as a way of knowing. Different musicians may know about similar musical structures in different ways; different ways of knowing facilitate particular kinds of perception and cognition that underlie different performance behaviors. Some of these ways of knowing can facilitate improvisatory performance practices. The details of these improvisatory ways of knowing can be characterized by psychological and neuroscientific experimental work that compares differences in perception and cognition between groups of musicians depending on their training methods and performance experiences. In particular, perception-action coupling is a promising place to begin making such comparisons. This approach provides an alternative operationalization of improvisation for scientific study that is not susceptible to the problems that arise when describing cognitive processes in culturally contingent and music-theoretically relative terms such as novelty, spontaneity, and freedom, as past experimental work has done. Its hypotheses are also more readily falsifiable. This perspective can also connect an understanding of musical improvisation to other domains of improvisation and to historical and ethnomusicological work, as well as square it with more general theories in cognitive science, such as perception-action coupling. Finally, such a formulation has productive implications for work on improvisation thatdoesengage with concepts like novelty, spontaneity, and freedom that are traditionally invoked in improvisation discourse.

On combustion generated noise

1971 ◽  
Vol 49 (2) ◽  
pp. 399-414 ◽  
Author(s):  
Warren C. Strahle
Keyword(s):  
Fluid Mechanics ◽  
Experimental Work ◽  
Power Output ◽  
Turbulent Flames ◽  
Experimental Results ◽  
Combustion Noise ◽  
Aerodynamic Noise ◽  
Sound Power ◽  
Spectral Content ◽  
Past Experimental Work

Upon review of past experimental results and theoretical efforts it is apparent that the mechanism by which combustion noise is generated is not well understood. A theory of combustion noise is developed in this paper which follows rigorously from the principles of fluid mechanics. Lighthill's approach, used in his studies of aerodynamic noise, is closely followed in the present work. The sound radiated from open, turbulent flames is found to depend strongly upon the structure of such flames; at present their structure is not well known. However, meaningful bounds and scaling rules for the sound power output and spectral content are derived based upon the present limited knowledge. A framework is developed which explains past experimental work and the origin of combustion noise.

Research into the Effect of Photometric Flicker Event on the Perception of Office Workers

2019 ◽  
pp. 22-27
Author(s):  
Cenk Yavuz ◽  
Ceyda Aksoy Tırmıkç ◽  
Burcu Çarklı Yavuz
Keyword(s):  
Experimental Work ◽  
Psychological Problems ◽  
Office Workers ◽  
Questionnaire Study ◽  
Fast Growing ◽  
Lighting Conditions ◽  
Lighting Systems ◽  
Enormous Number

Today the number of office workers has reached to an enormous number due to the fast-growing technology. Most of these office workers spend long hours in enclosed spaces with little/no daylight penetration. The lack of daylight causes physiological and psychological problems with the workers. At this point lighting systems become prominent as the source and the solution of the problem. Photometric flicker event which arises in the lighting systems can sometimes become visible and brings a lot of issues with it. In this paper, an experimental work has been done to investigate the effect of flicker. For this purpose, the flicker values of 3 different experiment rooms for different lighting conditions and scenarios have been measured and a questionnaire study has been carried out in the experiment rooms with 30 participants. In conclusion, the effect of the flicker event on the volunteers have been classified and some methods have been proposed not to experience flicker effects.

THE ROLE OF LITERACY METHODS IN MASTERING OF WRITTEN LANGUAGE BY STUDENTS WITH DEVELOPMENTAL DYSLEXIA

2019 ◽  
Vol 7 (1) ◽  
pp. 10-18
Author(s):  
Tsvetanka Tsenova
Keyword(s):  
Experimental Work ◽  
Developmental Dyslexia ◽  
Reading Skills ◽  
Writing Skills ◽  
Written Language ◽  
Reading And Writing ◽  
Empirical Verification ◽  
Literacy Methods ◽  
The Relationship

This article focuses on the relationship between literacy methods applied at school and the emergence of serious difficulties in mastering reading and writing skills that shape the developmental dyslexia. The problem was analyzed theoretically and subjected to empirical verification. Experimental work was presented which aims to study the phonological and global reading skills of 4- th grade students with and without dyslexia. Better global reading skills have been demonstrated in all tested children, and this is much more pronounced in those with dyslexia than their peers without disorders. Hence, the need to develop a special, corrective methodology for literacy of students with developmental dyslexia consistent with their psychopathological characteristics.

Efficient Steganography Algorithm Based On DCT And Entropy Thresholding Technique

2018 ◽  
Vol 8 (1) ◽  
pp. 45
Author(s):  
Satvir Singh
Keyword(s):  
Relative Entropy ◽  
Experimental Work ◽  
Random Function ◽  
Signal To Noise Ratio ◽  
Binary Sequence ◽  
Threshold Value ◽  
Absolute Difference ◽  
Secret Message ◽  
Signal To Noise ◽  
Confidential Information

Steganography is the special art of hidding important and confidential information in appropriate multimedia carrier. It also restrict the detection of  hidden messages. In this paper we proposes steganographic method based on dct and entropy thresholding technique. The steganographic algorithm uses random function in order to select block of the image where the elements of the binary sequence of a secret message will be inserted. Insertion takes place at the lower frequency  AC coefficients of the  block. Before we insert the secret  message. Image under goes dc transformations after insertion of the secret message we apply inverse dc transformations. Secret message will only be inserted into a particular block if  entropy value of that particular block is greater then threshold value of the entropy and if block is selected by the random function. In  Experimental work we calculated the peak signal to noise ratio(PSNR), Absolute difference , Relative entropy. Proposed algorithm give high value of PSNR  and low value of Absolute difference which clearly indicate level of distortion in image due to insertion of secret message is reduced. Also value of  relative entropy is close to zero which clearly indicate proposed algorithm is sufficiently secure. 

The importance of segmental and main arteries of thorachic and abdomen aorta in collateral blood supply of the spinal cord (experimental work)

2018 ◽  
Vol 60 (3) ◽  
pp. 226-232
Author(s):  
L.A. Boсkeria ◽  
V.S. Arakelyan ◽  
A.Yu. Gorodkov ◽  
V.L. Khon ◽  
V.G. Papitashvili ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Blood Supply ◽  
Experimental Work

Our words matter: acceptability, grammaticality, and ethics of research on singular 'they'-type pronouns

2018 ◽  
Author(s):  
Lauren Marie Ackerman
Keyword(s):  
Empirical Evidence ◽  
Experimental Work ◽  
Ethical Issues ◽  
Singular Form ◽  
Starting Point ◽  
Ethics Of Research ◽  
Formal Properties

Until now, there has been little experimental work investigating the processing and formal properties of the singular they suite of pronouns. As scientific and popular attention to singular they increases, it will be critical for research to acknowledge theoretical and ethical issues regarding discussion of this phenomenon. This commentary uses the recent paper by Doherty & Conklin (2017) as a starting point to discuss issues surrounding work on the various forms of singular they. It concludes that there is sufficient theoretical and empirical evidence to claim they has a grammatically singular form (at least in colloquial English). It also recommends care be taken in academic discussions of the grammaticality and acceptability of terms which are associated with marginalised communities.

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