Bloat Control Operators and Diversity in Genetic Programming: A Comparative Study

2010 ◽  
Vol 18 (2) ◽  
pp. 305-332 ◽  
Author(s):  
E. Alfaro-Cid ◽  
J. J. Merelo ◽  
F. Fernández de Vega ◽  
A. I. Esparcia-Alcázar ◽  
K. Sharman
Keyword(s):  
Control Method ◽  
Substantial Reduction ◽  
Genotypic Diversity ◽  
Benchmark Problems ◽  
New Approach ◽  
The Mean ◽  
Preliminary Study ◽  
Genetic Pool ◽  
Control Operators

This paper reports a comparison of several bloat control methods and also evaluates a recent proposal for limiting the size of the individuals: a genetic operator called prune and plant. The aim of this work is to test the adequacy of this method. Since a preliminary study of the method has already shown promising results, we have performed a thorough study in a set of benchmark problems aiming at demonstrating the utility of the new approach. Prune and plant has obtained results that maintain the quality of the final solutions in terms of fitness while achieving a substantial reduction of the mean tree size in all four problem domains considered. In addition, in one of these problem domains, prune and plant has demonstrated to be better in terms of fitness, size reduction, and time consumption than any of the other bloat control techniques under comparison. The experimental part of the study presents a comparison of performance in terms of phenotypic and genotypic diversity. This comparison study can provide the practitioner with some relevant clues as to which bloat control method is better suited to a particular problem and whether the advantage of a method does or does not derive from its influence on the genetic pool diversity.

scholarly journals Impact of a Smart-Ring-Based Feedback System on the Quality of Chest Compressions in Adult Cardiac Arrest: A Randomized Preliminary Study

2021 ◽  
Vol 18 (10) ◽  
pp. 5408
Author(s):  
Chiwon Ahn ◽  
Seungjae Lee ◽  
Jongshill Lee ◽  
Jaehoon Oh ◽  
Yeongtak Song ◽  
...  
Keyword(s):  
Primary Outcome ◽  
Feedback System ◽  
Controlled Study ◽  
Feedback Group ◽  
Compression Depth ◽  
System Usability Scale ◽  
The Mean ◽  
Preliminary Study ◽  
The Ideal

This study aimed to assess the effectiveness of a novel chest compression (CC) smart-ring-based feedback system in a manikin simulation. In this randomized, crossover, controlled study, we evaluated the effect of smart-ring CC feedback on cardiopulmonary resuscitation (CPR). The learnability and usability of the tool were evaluated with the System Usability Scale (SUS). Participants were divided into two groups and each performed CCs with and without feedback 2 weeks apart, using different orders. The primary outcome was compression depth; the proportion of accurate-depth (5–6 cm) CCs, CC rate, and the proportion of complete CCs (≤1 cm of residual leaning) were assessed additionally. The feedback group and the non-feedback group showed significant differences in compression depth (52.1 (46.3–54.8) vs. 47.1 (40.5–49.9) mm, p = 0.021). The proportion of accurate-depth CCs was significantly higher in the interventional than in the control condition (88.7 (30.0–99.1) vs. 22.6 (0.0–58.5%), p = 0.033). The mean SUS score was 83.9 ± 8.7 points. The acceptability ranges were ‘acceptable’, and the adjective rating was ‘excellent’. CCs with smart-ring feedback could help achieve the ideal range of depth during CPR. The smart-ring may be a valuable source of CPR feedback.

scholarly journals Enhancement of Region of Interest CT Reconstructions through Multimodal Data

2018 ◽  
Vol 4 (1) ◽  
pp. 331-335
Author(s):  
David Schote ◽  
Tim Pfeiffer ◽  
Georg Rose
Keyword(s):  
Substantial Reduction ◽  
Region Of Interest ◽  
Proof Of Concept ◽  
Multimodal Data ◽  
New Approach ◽  
Full Field ◽  
Lack Of Information ◽  
Ct Data ◽  
Flight Measurements

AbstractComputed tomography (CT) scans are frequently used intraoperatively, for example to control the positioning of implants during intervention. Often, to provide the required information, a full field of view is unnecessary. I nstead, the region-of-interest (ROI) imaging can be performed, allowing for substantial reduction in the applied X-ray dose. However, ROI imaging leads to data inconsistencies, caused by the truncation of the projections. This lack of information severely impairs the quality of the reconstructed images. This study presents a proof-of-concept for a new approach that combines the incomplete CT data with ultrasound data and time of flight measurements in order to restore some of the lacking information. The routine is evaluated in a simulation study using the original Shepp-Logan phantom in ROI cases with different degrees of truncation. Image quality is assessed by means of normalized root mean square error. The proposed method significantly reduces truncation artifacts in the reconstructions and achieves considerable radiation exposure reductions.

Validity of The Fertility Quality of Life (FertiQol) Questionnaire in Indonesian Infertile Women

KnE Medicine ◽  
2017 ◽  
Vol 1 (1) ◽  
pp. 202
Author(s):  
Muhammad D. Priangga ◽  
Gita Pratama ◽  
Mila Maidarti ◽  
Achmad K. Harzif ◽  
Budi Wiweko
Keyword(s):  
Quality Of Life ◽  
Statistical Analysis ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Validity And Reliability ◽  
Cross Sectional ◽  
Infertile Women ◽  
The Mean ◽  
Preliminary Study

<p><strong>Introduction</strong></p><p>Infertility in Indonesia has an estimated prevalence as high as 22.3%, with the nature of the problem and its treatment could be devastating, it could affect quality of life and vice versa influence successful of the treatment. The Fertility Quality of Life (FertiQol) Questionnaire was specifically designed for infertility couples and has been demonstrated to have good properties. Studies in several countries has showed consistency in validity and reliability of the questionnaire. Precedently there has been no published study about Fertiqol in Indonesia, this preliminary study is to measure validity and reliability of FertiQol questionnaire among Indonesian infertility women.</p><p><br /> <strong>Material &amp; Methods</strong></p><p>This is a cross-sectional study, a written Fertiqol Questionnaire Indonesian version (www.Fertiqol.org) were distribute to Infertility clinic in Cipto Mangunkusumo General Hospital, total of 129 women completed the questionnaire. Statistical analysis used SPSS version 23.0. The questionnaire were tested for validity with Pearson’s correlation with two tailed and Cronbach α coefficient for reliability.<br /> <strong></strong></p><p><strong>Results</strong></p><p>FertiQol were completed by 129 women with infertility problem. The mean of total FertiQol score was 70.49±11.44, score for emotional, mind/body, relational, environment and tolerability was respectively 63.79±18.86; 66.05±18.22; 75.19.±15.11; 68.99±18.63; 75.64±16.55; 66.23±19.17. Reliability of Fertiqol was high (Cronbach a &gt; 0.70) with every item of questionnaires was valid ( r&gt; 0.1729).<br /> <strong></strong></p><p><strong>Conclusion</strong></p><p>This study showed that FertiQol Indonesian version are valid and reliable in measured quality of life among infertility women in Indonesia.</p>

A New Approach of Combined Shape and Gauge Control

2010 ◽  
Vol 145 ◽  
pp. 123-127
Author(s):  
Xiao Ping Zhang ◽  
Chang Jian Zhi ◽  
Bao Sun ◽  
Xiao Zhong Du ◽  
Jin Zhi Zhang
Keyword(s):  
Control Systems ◽  
Load Distribution ◽  
Shape Control ◽  
Control Method ◽  
Rolling Process ◽  
Distribution Method ◽  
New Approach ◽  
On Line ◽  
Strip Crown

Due to the coupled function of shape and gauge control in rolling process, mutual effects must be considered when shape control or gauge control is carried out. Traditional shape and gauge control theories are of independent and the control systems are also separated, so it is difficult to ensure the quality of shape and gauge simultaneously. Based on the updated shape theory and a single parameter model of load distribution method, a combined shape and gauge control method was developed, which can adjust rolling regulations on-line according to the deviation of strip crown measured at the exit of the rolling mill. The method can ensure gauge precision while strip crown is adjusted and the purpose of combined shape and gauge control is reached.

scholarly journals Two year data from a preliminary study of double lesion site MRgFUS treatment of Essential Tremor targeting the thalamus and the posterior subthalamic area

2021 ◽  
Author(s):  
Ayesha Jameel ◽  
Wladyslaw Gedroyc ◽  
Dipankar Nandi ◽  
Bryn Jones ◽  
Olga Kirmi ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Essential Tremor ◽  
Focused Ultrasound ◽  
Rating Scale ◽  
Severity Scores ◽  
The Mean ◽  
Preliminary Study ◽  
Clinical Rating Scale

AbstractBackgroundMR-guided focused ultrasound (MRgFUS) is an effective treatment for essential tremor (ET). However, the optimal intracranial target sites remain to be determined.ObjectiveTo assess MRgFUS induced sequential lesions in (anterior-VIM/VOP nuclei) the thalamus and then posterior subthalamic area (PSA) performed during the same procedure for alleviating ET.Methods14 patients had unilateral MRgFUS lesions placed in anterior-VIM/VOP then PSA. Bain-Findley Spirals were collected during MRgFUS from the treated arm (BFS-TA) and throughout the study from the treated (BFS-TA) and non-treated (BFS-NTA) arms and scored by blinded assessors. Although, the primary outcome was change in the BFS-TA from baseline to 12 months we have highlighted the 24 month data.Secondary outcomes included the Clinical Rating Scale for Tremor (CRST), Quality of Life for ET (QUEST) and PHQ-9 depression scores.ResultsThe mean improvement in the BFS-TA from baseline to 24 months was 41.1% (p<0.001) whilst BFS-NTA worsened by 8.8% (p<0.001). Intra-operative BFS scores from the targeted arm showed a mean 27.9% (p<0.001) decrease after anterior-VIM/VOP ablation and an additional 30.1% (p<0.001) reduction from post anterior-VIM/VOP to post-PSA ablation.Mean improvements at 24 month follow-up in the CRST-parts A, B and C were 60.7%, 30.4% and 65.6% respectively and 37.8% in QUEST-tremor score (all p<0.05). Unilateral tremor severity scores decreased in the treated arm (UETTS-TA) 72.9% (p=0.001) and non-treated arm (UETTS-NTA) 30.5% (p=0.003). At 24 months residual adverse effects were slight unsteadiness (n=1) and mild hemi-chorea (n=1).ConclusionUnilateral anterior-VIM/VOP and PSA MRgFUS significantly diminished contralateral arm tremor with improvements in arm function, tremor related disability and quality of life, with an acceptable adverse event profile.

scholarly journals THE EFFECTIVENESS OF APPLYING ESA METHOD TOWARDS STUDENTS’ ENGLISH VOCABULARY MASTERY

2019 ◽  
Vol 6 (2) ◽  
pp. 76
Author(s):  
Rully May Vikasari
Keyword(s):  
Foreign Language ◽  
Junior High School ◽  
Mixed Method ◽  
Target Language ◽  
Writing Class ◽  
Post Test ◽  
Quasi Experimental ◽  
The Mean ◽  
Preliminary Study

Inspired by difficulties of grade 8 students of SMPN 4 Praya, Central Lombok in increasing their vocabulary mastery, the current study applied ESA (Engage Study Active) method to overcome the situation. The fundamental contribution of vocabulary in learning a foreign language encouraged the researcher to find a way to improve students’ vocabulary mastery. In an attempt to find the solution, the study was designed as a quasi-experimental study at SMPN (public junior high school) 4 Praya. To conduct the study, the researcher had conducted a preliminary study to collect information from the class to identify problems occurred in the school during vocabulary learning. By applying mixed method, this study was aimed to find the effectiveness of ESA method using the quantitative method and to see the improvement on the students’ mastery qualitatively by conducting classroom observation to see the quality of interaction in the class using English as the target language. Throughout the study, quantitative data showed increase in students’ vocabulary mastery after being treated using ESA method, in which the mean score of the pre-test of 53 increased in the post-test of 75. The result was found using descriptive statistic analysis towards students’ pretest and posttest results. Qualitatively, the observers’ notes also indicated increase in terms of students’ vocabulary mastery by viewing students’ engagements during classroom interactions. It can be concluded that ESA method may increase students’ English vocabulary mastery in writing class.

scholarly journals Evaluating Teachers’ Attitudes Toward Stuttering Using the Persian Version of the Teacher’s Attitudes Towards Stuttering Inventory

2020 ◽  
Vol 15 (1) ◽  
pp. 41-46
Author(s):  
Alireza Aghaz ◽  
Zohre Arani Kashani ◽  
Arash Shahriyari
Keyword(s):  
Content Validity ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Retest Reliability ◽  
Persian Version ◽  
The Mean ◽  
Preliminary Study ◽  
Teachers Attitudes ◽  
Test Retest Reliability

Introduction: The attitude of teachers is effective in improving the quality of life and academic achievement of students with stuttering. The Teachers’ Attitudes Toward Stuttering (TATS) inventory is a tool for evaluating teachers’ opinions and attitudes toward stuttering. The purpose of this study is to validate the Persian version of the TATS (TATS-Persian) and a preliminary study of the attitude of elementary teachers towards stuttering.Materials and Methods: In this cross-sectional study, which is of validation and instrumentation type, 32 teachers from elementary schools in Tehran were recruited by the available sampling method. To examine the content validity of TATS-Persian, 12 teachers were surveyed, and for the test-retest reliability of it, 12 teachers re-completed the TATS-Persian after one week. The statistical methods included the Cronbach alpha coefficient calculation and the Spearman correlation test.Results: The content validity, test-retest reliability, and internal consistency of TATS-Persian were 0.92, 0.93, 0.96, respectively. The Mean±SD scores of teacher’s attitudes were 78.09 ±11.9. Also, the teachers’ attitudes score had a significant positive correlation with the number of stuttering students experienced in their teaching history.Conclusion: The Persian version of the TATS inventory is a valid and simple tool for evaluating teachers’ attitudes toward stuttering.

Predicting Single Observer’s Votes from Objective Measures using Neural Networks

2020 ◽  
Vol 2020 (11) ◽  
pp. 130-1-130-8
Author(s):  
Lohic Fotio Tiotsop ◽  
Tomas Mizdos ◽  
Miroslav Uhrina ◽  
Peter Pocta ◽  
Marcus Barkowsky ◽  
...  
Keyword(s):  
Neural Network ◽  
Neural Networks ◽  
Numerical Experiments ◽  
Visual Quality ◽  
Objective Measures ◽  
New Approach ◽  
Opinion Score ◽  
The Mean ◽  
Insight Into

The last decades witnessed an increasing number of works aiming at proposing objective measures for media quality assessment, i.e. determining an estimation of the mean opinion score (MOS) of human observers. In this contribution, we investigate a possibility of modeling and predicting single observer’s opinion scores rather than the MOS. More precisely, we attempt to approximate the choice of one single observer by designing a neural network (NN) that is expected to mimic that observer behavior in terms of visual quality perception. Once such NNs (one for each observer) are trained they can be looked at as “virtual observers” as they take as an input information about a sequence and they output the score that the related observer would have given after watching that sequence. This new approach allows to automatically get different opinions regarding the perceived visual quality of a sequence whose quality is under investigation and thus estimate not only the MOS but also a number of other statistical indexes such as, for instance, the standard deviation of the opinions. Large numerical experiments are performed to provide further insight into a suitability of the approach.

scholarly journals P116: A randomized cross-over trial of conventional bimanual versus single elbow (Koch) chest compression quality in a height-restricted aeromedical helicopter

CJEM ◽  
2018 ◽  
Vol 20 (S1) ◽  
pp. S98-S98
Author(s):  
N. Pompa ◽  
D. O’Dochartaigh ◽  
M. J. Douma ◽  
P. Jaggi ◽  
S. Ryan ◽  
...  
Keyword(s):  
External Validation ◽  
Compression Rate ◽  
Limited Data ◽  
Compression Technique ◽  
Compression Depth ◽  
Restricted Environment ◽  
The Mean ◽  
Preliminary Study ◽  
Aeromedical Transport

Introduction: Aeromedical helicopters and fixed wing aircraft are used across Canada to transfer patients to definitive care. Given height limitation in aeromedical transport, CPR performance can be affected. An adapted manual compression technique has been proposed by H. Koch (pron. Cook) that uses the elbow to compress the sternum rather than the conventional hand. This preliminary study evaluated the quality of Koch compressions versus conventional bimanual compressions. Methods: Paramedics (5), registered nurses (3) and a physician (1) were recruited. Each participant performed a 2 minute cycle of each technique, were randomized to determine which technique was performed first, and rested 5 minutes between compression cycles. A Resusci Anne SkillReporter manikin atop a stretcher in a BK117 helicopter was used. The compressors performed without feedback or prompting. Outcomes include compression rate, depth, recoil, and fatigue. Results: The mean conventional compression rate was (bpm) 118 +/− 13 versus 111 +/− 10 in the Koch scenario (p=0.02) (target 100 to 120). Mean conventional compression depth (mm) was 44 +/− 9 versus 49 +/− 7 in the Koch scenario (p=0.01) (target 50 to 60). The mean percentage of compressions with complete release in the conventional scenario was 86 +/− 20 versus 84 +/− 22 in the Koch scenario (p=0.9) (target 100%). Using a Modified Borg Scale of 1 to 10, mean provider fatigue after conventional CPR was 7 (+/− 1.6) versus 3 (+/− 1.2) using Koch technique (p<0.001). On average, Koch technique improved the percentage of compressions at target rate by 26%, the percentage at correct depth by 9%, overall compression quality score by 13% and were more less fatiguing. Conclusion: Using an elbow in a height-restricted environment improved compression depth and reduced provider fatigue. From our limited data, Koch compressions appear to improve compression quality. Further study and external validation are required.

PENINGKATAN KUALITAS HIDUP MELALUI LOGOTERAPI PADA KLIEN YANG MENJALANI HEMODIALISIS

2019 ◽  
Vol 11 (1) ◽  
pp. 9-18
Author(s):  
Abdul Wakhid ◽  
Ana Puji Astuti ◽  
Maya Kurnia Dewi
Keyword(s):  
Quality Of Life ◽  
Renal Failure ◽  
Test Group ◽  
Sampling Technique ◽  
T Test ◽  
P Value ◽  
Number Of Patients ◽  
Post Test ◽  
The Mean

Logoterapi merupakan terapi untuk menemukan makna positif dibalik sebuah kejadian yang tidak diharapkan. Logoterapi dilaksanakan secara individu maupun berkelompok dalam bentuk konseling dan berorientasi pada pencarian makna hidup individu. Tujuan logoterapi meningkatkan makna pengalaman hidup individu yang diarahkan kepada pengambilan keputusan yang bertanggung jawab. Penelitian ini dilakukan dengan menggunakan rancangan pre-experiment dengan metode pre and post test group, artinya pengumpulan data dilakukan terhadap responden untuk membandingkan kualitas hidup sebelum dan sesudah dilakukan intervensi. Teknik pengambilan sampel dilakukan dengan metode total sampling yaitu pengambilan seluruh sampel dengan tetap memperhatikan kriteria yang telah ditetapkan. Jumlah pasien yang menjalani hemodialisis di RSUD Ungaran sebanyak 21 orang dan di RSUD Ambarawa sebanyak 25 pasien. Analisis data dilakukan dengan menggunakan uji t test dependent. Hasil penelitian didapatkan bahwa dari 46 responden didapatkan rata-rata skor kualitas hidup pasien yang mejalani hemodialisis sebesar 60.22 dengan skor terrendah 55 dan skor tertinggi 69. Bahwa dari 46 responden didapatkan rata-rata skor kualitas hidup pasien yang mejalani hemodialisis sebesar 88.72 dengan skor terrendah 79 dan skor tertinggi 103. Hasil uji statistik dengan uji t test dependent diketahui ada pengaruh logoterapi terhadap kemampuan memaknai hidup pada klien yang menjalani hemodialisis di RSUD Kabupaten Semarang (p value: 0,0001). Saran perlunya peningkatan kemampuan perawat dalam memberikan layanan kesehatan termasuk pemberian atau pemanduan penemuan makna hidup bagi pasien hemodialysis, agar selain dengan hemodialysis, ada faktor internal dari pasien yang dapat dijadikan sebagai motivasi untuk sembuh dari penyakit.   Kata Kunci: Logoterapi, kualitas hidup   IMPROVE THE QUALITY OF LIFE OF PATIENTS WITH RENAL FAILURE WHO UNDERWENT HEMODIALYSIS   ABSTRACT Logotherapy is a therapy to discover the positive meaning behind an unexpected event. Logotherapy is carried out individually or in groups in the form of counseling and oriented to the search for the meaning of individual life. This study aims to improve the quality of life of patients with renal failure who underwent hemodialysis. This research was conducted by using pre-experiment with pre-post test study. The sampling technique was done by the convenience sampling. The number of patients undergoing hemodialysis as many as 46 respondents. Data analysis was done by using test t test dependent. The result showed that from 46 respondents got the mean of quality of life of patients who had hemodialysis 60.22 with lowest score 55 and highest score 69. Whereas from 46 respondents got the mean score of life quality of patients who had hemodialysis 88.72 with score the lowest score 79 and the highest score 103. The result of statistical test with t test dependent is known there is influence of logoterapi to the ability of meaningful life on client who undergo hemodialysis at Semarang Regency hospitals (p value: 0.0001). Advice on the need to improve the nurse's ability to provide health services, including the provision or guidance of the discovery of the meaning of life for hemodialysis patients, in addition to hemodialysis, there are internal factors of the patient that can be used as a motivation to recover from illness.   Keywords: Logotherapy, quality of life, kidney failure.  

Sign in / Sign up

Export Citation Format

Share Document