scholarly journals Eye and pointer coordination in search and selection tasks

2010 ◽  
Author(s):  
Hans-Joachim Bieg ◽  
Lewis L. Chuang ◽  
Roland W. Fleming ◽  
Harald Reiterer ◽  
Heinrich H. Bülthoff
Keyword(s):  
Selection Tasks ◽  
Search And Selection

FEATURES OF THE WINTER WHITE CABBAGE VARIETIES GENERATIVE DEVELOPMENT

1970 ◽  
pp. 38-40
Author(s):  
R. E. Kazakhmedov ◽  
М. А Magomedova
Keyword(s):  
Hormonal Regulation ◽  
F1 Hybrids ◽  
Vegetable Crops ◽  
Stem Extension ◽  
Market Competitiveness ◽  
White Cabbage ◽  
Environmentally Safe ◽  
Selection Tasks ◽  
High Yielding Varieties ◽  
High Yields

One of the modern selection tasks in vegetable growing is quality products improving, obtaining high yields of environmentally safe wide assortment vegetables. To the new varieties of vegetable crops including winter white cabbage are specified new requirements such as market competitiveness, resistance to unfavorable environmental conditions, heat resistance of the varieties and F1 hybrids. The article is shown investigation results about studies of exogenous treatment by solutions on the base of physiologically active compounds of hormonal nature on the started process of stem extension stage activation and flowering of winter white cabbage plants. For the first time in the Dagestan conditions has been studied the possibility of hormonal regulation of the premature stem extension stage and flowering prevention of winter white cabbage after the initiation of natural induction. In our studies with an early planting there are not more than 20% of blooming plants, most varieties showed a high propensity to premature stem extension stage and flowering. The possibility of the hormonal exogenous regulation of the unfavorable winter white cabbage flowering has been revealed. The most pronounced effect on the transition to stem extension stage and flowering were provided by auxin nature preparations. In particular, treatment with NAS at a dose of 5 mg / l significantly reduced the number of blossom plants, krezatsin (50 mg / l) had a similar effect, but it was less pronounced. The use of cabbage in winter crops makes it possible to obtain two or three yields per year from the same area. Creation and introduction into production of promising and high-yielding varieties and hybrids will allow increasing production and reducing its cost.

scholarly journals Feature Selection Using Enhanced Particle Swarm Optimisation for Classification Models

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1816
Author(s):  
Hailun Xie ◽  
Li Zhang ◽  
Chee Peng Lim ◽  
Yonghong Yu ◽  
Han Liu
Keyword(s):  
Feature Selection ◽  
Particle Swarm ◽  
Nonlinear Function ◽  
Particle Swarm Optimisation ◽  
Data Sets ◽  
Discriminative Feature ◽  
Advanced Search ◽  
Selection For ◽  
Selection Tasks ◽  
New Strategies

In this research, we propose two Particle Swarm Optimisation (PSO) variants to undertake feature selection tasks. The aim is to overcome two major shortcomings of the original PSO model, i.e., premature convergence and weak exploitation around the near optimal solutions. The first proposed PSO variant incorporates four key operations, including a modified PSO operation with rectified personal and global best signals, spiral search based local exploitation, Gaussian distribution-based swarm leader enhancement, and mirroring and mutation operations for worst solution improvement. The second proposed PSO model enhances the first one through four new strategies, i.e., an adaptive exemplar breeding mechanism incorporating multiple optimal signals, nonlinear function oriented search coefficients, exponential and scattering schemes for swarm leader, and worst solution enhancement, respectively. In comparison with a set of 15 classical and advanced search methods, the proposed models illustrate statistical superiority for discriminative feature selection for a total of 13 data sets.

Inspection Times and the Selection Task: What do Eye-Movements Reveal about Relevance Effects?

2003 ◽  
Vol 56 (6) ◽  
pp. 1053-1077 ◽  
Author(s):  
Linden J. Ball ◽  
Erica J. Lucas ◽  
Jeremy N. V. Miles ◽  
Alastair G. Gale
Keyword(s):  
Eye Movement ◽  
Good Evidence ◽  
Time Effect ◽  
Selection Task ◽  
Inspection Time ◽  
Attentional Processing ◽  
Eye Movement Tracking ◽  
Selection Tasks ◽  
Movement Tracking ◽  
Mouse Pointing

Three experiments are reported that used eye-movement tracking to investigate the inspection-time effect predicted by Evans’ (1996) heuristic-analytic account of the Wason selection task. Evans’ account proposes that card selections are based on the operation of relevance-determining heuristics, whilst analytic processing only rationalizes selections. As such, longer inspection times should be associated with selected cards (which are subjected to rationalization) than with rejected cards. Evidence for this effect has been provided by Evans (1996) using computer- presented selection tasks and instructions for participants to indicate (with a mouse pointer) cards under consideration. Roberts (1998b) has argued that mouse pointing gives rise to artefactual support for Evans’ predictions because of biases associated with the task format and the use of mouse pointing. We eradicated all sources of artefact by combining careful task constructions with eye-movement tracking to measure directly on-line attentional processing. All three experiments produced good evidence for the robustness of the inspection-time effect, supporting the predictions of the heuristic-analytic account.

Analyzing Midair Object Pointing Mappings for Smart Display Input

2021 ◽  
Vol 5 (ISS) ◽  
pp. 1-18
Author(s):  
Futian Zhang ◽  
Sachi Mizobuchi ◽  
Wei Zhou ◽  
Edward Lank
Keyword(s):  
Target Selection ◽  
Item Selection ◽  
Menu Item ◽  
Bare Hand ◽  
Common Task ◽  
Hand Control ◽  
Smart Tv ◽  
Series Of Experiments ◽  
Selection Tasks ◽  
Positional Mapping

One common task when controlling smart displays is the manipulation of menu items. Given current examples of smart displays that support distant bare hand control, in this paper we explore menu item selection tasks with three different mappings of barehand movement to target selection. Through a series of experiments, we demonstrate that Positional mapping is faster than other mappings when the target is visible but requires many clutches in large targeting spaces. Rate-based mapping is, in contrast, preferred by participants due to its perceived lower effort, despite being slightly harder to learn initially. Tradeoffs in the design of target selection in smart tv displays are discussed.

SEQUENTIAL ASPECTS OF RESIDENTIAL SEARCH AND SELECTION

1982 ◽  
Vol 3 (1) ◽  
pp. 34-57 ◽  
Author(s):  
Gary M. Talarchek
Keyword(s):  
Search And Selection

scholarly journals “Cognitive control in media multitaskers” ten years on: A meta-analysis

2021 ◽  
Vol 15 (2) ◽  
Author(s):  
Douglas A. Parry ◽  
Daniel B. Le Roux
Keyword(s):  
Cognitive Control ◽  
Effect Size ◽  
Cognitive Functions ◽  
Selection Process ◽  
Meta Analysis ◽  
Systematic Search ◽  
Media Multitasking ◽  
Control Functions ◽  
Search And Selection ◽  
Measurement Approach

In the decade since Ophir, Nass, and Wagner’s (2009) seminal study numerous researchers have investigated possible associations between media multitasking and cognitive control. Extending recent reviews, the present study provides a synthesis of extant research into this association across measurement approachs and cognitive functions. Following a systematic search and selection process, 118 assessments were included in the meta-analysis. Overall, the pooled effect size of the association, across measurement approaches and cognitive control functions, is small. This association is moderated both by the measurement approach as well as by the outcome variables targeted. These differences are tested and explained in detail. Building on the findings, it is recommended that research be conducted to determine the sources of heterogeneity in outcomes, understand differences between measurement approaches, and address causality and theoretical mechanisms. Overall, the review suggests that, ten years on, we are no closer to understanding ‘cognitive control in media multitaskers.’

scholarly journals Screening of Amazonian bacillus strains for lipase production using glycerol as substrate

ScientiaTec ◽  
2020 ◽  
Vol 7 (03) ◽  
Author(s):  
Giandra Volpato ◽  
Victória Furtado Migliavacca ◽  
Bruna Coelho de Andrade ◽  
Júlio Xandro Heck ◽  
Marco Antônio Záchia Ayub
Keyword(s):  
Organic Synthesis ◽  
Culture Medium ◽  
Lipolytic Activity ◽  
Gum Arabic ◽  
Lipase Production ◽  
Culture Conditions ◽  
Search And Selection ◽  
Triton X ◽  
Potential Use ◽  
Selection Of

The industrial application of lipolytic enzymes has been studied mainly due to the ability of these enzymes in catalyze reactions of synthesis and their stability in various organic solvents. One possibility is the use of lipase the organic synthesis, taking advantage as the generation of waste and difficult recovery of sub bioproducts. In this work, we carried out a selection of eighty-four isolates of Bacillus amazonian for lipase production, of which 30 strains showed lipolytic activity. The study of the culture conditions was performed through a Plackett-Burman experimental design using the strain that presented the highest lipolytic activity in a culture medium using glycerol as substrate.  The studied conditions were: concentration of soybean oil, olive oil, triton X-100, gum arabic, glycerol, and (NH4)2SO4, pH, temperature and concentration of inoculums. The best result obtained were 27 U/L in 48 h of cultivation by Bacillus circulans BL53. This work shows that the search and selection of microorganism with lipolytic activities can facilitate the discovery of new lipases, with potential use as by-product surplus.

scholarly journals STRUCTURAL AND METHODOLOGICAL ASPECTS OF RESEARCH TYPOLOGIZATION ON THE USE OF ICT IN SECONDARY SCHOOL

2020 ◽  
Vol 79 (5) ◽  
pp. 1-14
Author(s):  
Антоніна Вікторівна Гривко
Keyword(s):  
Secondary Education ◽  
Information And Communication Technologies ◽  
Large Scale ◽  
Educational Process ◽  
School Education ◽  
Relevant Research ◽  
Ict Use ◽  
Search And Selection ◽  
Pedagogical Research ◽  
Research Types

The article features a methodology for systematization of research on ICT use in secondary education. Making important decisions about improving school education, including through the introduction of certain information and communication technologies into the educational process, is based on the study of relevant experience and relevant research results. The large number of diversified scientific works that make up the theoretical, practical, and methodological basis of the ICT use in school education necessitates the generalization, ordering, and determination of their typological features. The author singles out the following groups of studies related to the ICT use in school: generalizing theoretical-analytical (documentary), empirical and complex. Each of the groups is characterized by a variable set of typological features in terms of scale and independence of their conduct. They allow distinguishing their main types (10 types of research are considered in the article, for example, empirical/international large-scale/contextual studies or complex/local/separate studies, etc.). The author determined the structural and methodological criteria for the analysis of different research types (thematic, targeted, sampling, organizational, methodological, analytical, resultant) and carried out a selective analysis of the studies on the proposed typological features, structural and methodological criteria, the results of which were systematized in the matrix of methodological analysis of different research types on the ICT use in school education. According to the results of the works review, topical thematic areas of the analyzed research were identified, typical methods of data collection and analysis were singled out and the format of results reporting was highlighted for each selected research group. The approach to systematizing research on the use of ICT in secondary education institutions, presented in the proposed article, can be applied during the review of scientific achievements, the analysis of pedagogical research in the field of ICT, or to design individual research. Filling in the proposed analysis matrix will allow it to be further used as a database of relevant research papers, facilitate the search and selection of those that meet the objectives of a specific scientific search.

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