Adaptive Experimental Design Applied to Ergonomics Testing Procedure

2002 ◽  
Author(s):  
Michael Sasena ◽  
Matthew Parkinson ◽  
Pierre Goovaerts ◽  
Panos Papalambros ◽  
Matthew Reed
Keyword(s):  
Experimental Design ◽  
Constrained Optimization ◽  
Adaptive Design ◽  
Testing Procedure ◽  
Initial Study ◽  
Test Subject ◽  
Nonlinear Constrained Optimization ◽  
The Individual ◽  
Adaptive Experimental Design ◽  
Artifact Design

Nonlinear constrained optimization algorithms are widely utilized in artifact design. Certain algorithms also lend themselves well to design of experiments (DOE). Adaptive design refers to experimental design where determining where to sample next is influenced by information from previous experiments. We present a constrained optimization algorithm known as superEGO (a variant of the EGO algorithm of Schonlau, Welch and Jones) that is able to create adaptive designs effectively. Its ability to allow easily for a variety of sampling criteria and to incorporate constraint information accurately makes it well suited to the needs of adaptive design. The approach is demonstrated on a human reach experiment where the selection of sampling points adapts successfully to the stature and perception of the individual test subject. Results from the initial study indicate that superEGO is able to create experimental designs that yield more accurate models using fewer points than the original testing procedure.

Improving an Ergonomics Testing Procedure via Approximation-based Adaptive Experimental Design

2004 ◽  
Vol 127 (5) ◽  
pp. 1006-1013 ◽  
Author(s):  
Michael J. Sasena ◽  
Matthew Parkinson ◽  
Matthew P. Reed ◽  
Panos Y. Papalambros ◽  
Pierre Goovaerts
Keyword(s):  
Experimental Design ◽  
Adaptive Design ◽  
Testing Procedure ◽  
Test Subject ◽  
Adaptive Designs ◽  
Sample Point ◽  
Sampling Points ◽  
The Individual ◽  
Adaptive Experimental Design ◽  
Selection Of

Adaptive design refers to experimental design where the next sample point is determined by information from previous experiments. This article presents a constrained optimization algorithm known as superEGO (a variant of the EGO algorithm of Schonlau, Welch, and Jones) that can create adaptive designs using kriging approximations. Our primary goal is to illustrate that superEGO is well-suited to generating adaptive designs which have many advantages over competing methods. The approach is demonstrated on a novel human-reach experiment where the selection of sampling points adapts to the individual test subject. Results indicate that superEGO is effective at satisfying the experimental objectives.

scholarly journals Pengaruh Metode Bercerita Terhadap Kemampuan Mengungkapkan Bahasa Anak Usia 5-6 Tahun di TK Pertiwi 1 Banjarsari

2018 ◽  
Vol 5 (2) ◽  
Author(s):  
Gana Kartinika Hadi
Keyword(s):  
Data Analysis ◽  
Experimental Design ◽  
Research Design ◽  
Test Subject ◽  
Language Ability ◽  
T Test ◽  
Quantitative Approach ◽  
Analysis Technique ◽  
Experiment Method ◽  
Experiment Analysis

<p><em>The purpose of this study is to reveal the influence of storytelling method toward the ability of revealed language the of Child Aged 5-6 Years Old at Pertiwi 1 Banjarsari. This research uses quantitative approach by using experiment method; the research design uses Pre-Experimental design (nondesign) which includes pre-test and pos-test. Subject of this research is a child aged 5-6 years old in Pertiwi 1 Banjarsari Kindergarten about 19 students. Data collecting technique through the observation and documentation. Data analysis technique the inferensial statistics by using t data experiment analysis (T-Test). The result of data analysis is acquired value r = 0,68, </em><em> wich are -</em><em>2,450 </em><em> -11,66, thus </em><em>is accepted wich means there is significanct influence between </em><em>Sorytelling Method to child’s revealed language ability.</em><strong><em></em></strong></p>

scholarly journals Modulation of corticomotor excitability in response to distal focal cooling

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e6163 ◽  
Author(s):  
Yekta Ansari ◽  
Anthony Remaud ◽  
François Tremblay
Keyword(s):  
Skin Temperature ◽  
Motor Evoked Potentials ◽  
Secondary Analysis ◽  
Initial Study ◽  
Primary Analysis ◽  
Single Digit ◽  
Corticomotor Excitability ◽  
Individual Level ◽  
Cooling Phase ◽  
The Individual

Background Thermal stimulation has been proposed as a modality to facilitate motor recovery in neurological populations, such as stroke. Recently (Ansari, Remaud & Tremblay, 2018), we showed that application of cold or warm stimuli distally to a single digit produced a variable and short lasting modulation in corticomotor excitability. Here, our goal was to extend these observations to determine whether an increase in stimulation area could elicit more consistent modulation. Methods Participants (n = 22) consisted of a subset who participated in our initial study. Participants were asked to come for a second testing session where the thermal protocol was repeated but with extending the stimulation area from single-digit (SD) to multi-digits (MD, four fingers, no thumb). As in the first session, skin temperature and motor evoked potentials (MEPs) elicited with transcranial magnetic stimulation were measured at baseline (BL, neutral gel pack at 22 °C), at 1 min during the cooling application (pre-cooled 10 °C gel pack) and 5 and 10 min post-cooling (PC5 and PC10). The analysis combined the data obtained previously with single-SD cooling (Ansari, Remaud & Tremblay, 2018) with those obtained here for MD cooling. Results At BL, participants exhibited comparable measures of resting corticomotor excitability between testing sessions. MD cooling induced similar reductions in skin temperature as those recorded with SD cooling with a peak decline at C1 of respectively, −11.0 and −10.3 °C. For MEPs, the primary analysis revealed no main effect attributable to the stimulation area. A secondary analysis of individual responses to MD cooling revealed that half of the participants exhibited delayed MEP facilitation (11/22), while the other half showed delayed inhibition (10/22); which was sustained in the post-cooling phase. More importantly, a correlation between variations in MEP amplitude recorded during the SD cooling session with those recorded in the second session with MD cooling, revealed a very good degree of correspondence between the two at the individual level. Conclusion These results indicate that increasing the cooling area in the distal hand, while still eliciting variable responses, did produce more sustained modulation in MEP amplitude in the post-cooling phase. Our results also highlight that responses to cooling in terms of either depression or facilitation of corticomotor excitability tend to be fairly consistent in a given individual with repeated applications.

Cognitive Processes and Creative Lateral Thinking in Students of the Naval School of Peru

2021 ◽  
Vol 19 (5) ◽  
pp. 10-17
Author(s):  
Hector Santa Maria Relaiza ◽  
Doris Fuster-Guillen ◽  
Yolvi Ocana-Fernandez ◽  
Patricia Edith Guillen Aparicio ◽  
Freddy Antonio Ochoa Tataje
Keyword(s):  
High School ◽  
High School Students ◽  
Experimental Design ◽  
Data Collection ◽  
Cognitive Processes ◽  
School Students ◽  
Cross Sectional ◽  
Probabilistic Sampling ◽  
The Individual ◽  
Lateral Thinking

The present research focused on identifying the influence of cognitive processes in the creative lateral thinking of high school students. The work was developed under the positivist paradigm; it was classified as basic, of explanatory level, with quantitative approach, non-experimental design and cross-sectional. The sample, calculated through probabilistic sampling, consisted of 221 students. Two data collection instruments were used: the cognitive processes questionnaire and the lateral thinking questionnaire, which were subjected to content validity by expert judgment and reliability and internal consistency analysis by Cronbach's alpha, reaching values of 0.908 and 0.802, respectively. The analysis of verification by Spearman's rho obtained was 0.762, which determined the significant influence between cognitive processes and lateral thinking. It was concluded that, if procedures and actions that lead to the acquisition of knowledge in a constructive way and by discovery are practiced, creative and perceptive lateral thinking would be developed; then the individual would exhibit imagination and creative behaviors.

scholarly journals Improving entrepreneurial competencies in the classroom: an extension and in-study replication

2020 ◽  
Vol 23 (2) ◽  
pp. 79-96
Author(s):  
Caroline E.W. Glackin ◽  
Steven E. Phelan
Keyword(s):  
Treatment Group ◽  
Experimental Design ◽  
Initial Study ◽  
Matched Pair ◽  
Control Group ◽  
Content Type ◽  
Quasi Experimental ◽  
Entrepreneurial Competencies ◽  
One Year ◽  
Self Replication

PurposeA recent paper by Morris et al. (2013b) presented evidence that students can develop entrepreneurial competencies through international fieldwork. This paper explores whether the same results can be developed in a traditional classroom setting.Design/methodology/approachThe study is a systematic replication of the Morris study with the addition of a matched pair, quasi-experimental design, with a self-replication. Data were collected on 13 self-reported competencies at the start of a semester from two groups using the Morris instrument. The treatment group was exposed to a curriculum designed to teach entrepreneurial competencies, and both groups were re-surveyed at the end of the semester. The process was then repeated with a different cohort, one year later, to replicate the initial study.FindingsFive competencies saw significant increases in the first treatment group. However, only three of these competencies increased more in the treatment group than the control group. In the replication study, only one competency was significantly higher in the treatment group, and that competency was not one of the original three.Practical implicationsEducators and policymakers should select a curriculum that is valid and reliable. Entrepreneurship educators and policymaker should devote more time to evaluating the effectiveness of different pedagogical techniques for improving entrepreneurial competencies.Originality/valueTo the best of our knowledge, this is one of the first studies in entrepreneurship education to undertake a matched pair, quasi-experimental design with an in-study replication. The results indicate that serious inferential errors arise if simpler designs are used, even though such designs are the norm in entrepreneurship research.

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