scholarly journals EXPERIMENTAL “BEAUTY CONTEST” GAME AND SIMULTANEOUS DECISION-MAKING WITHIN VARIOUS GROUPS

Author(s):  
Alexander Rymanov

The paper examines experimental guessing “p-beauty contest” game. The objective of the study is to conduct an experimental study of simultaneous decision-making by subjects within various groups in the “p-beauty contest” guessing game, and to estimate the influence of various factors. The interac-tion of factors was evaluated. The contribution to this study extends the analysis of simultaneous de-cision-making by individuals within various groups to the conditions of the “p-beauty contest” game. The subjects simultaneously took decisions, while being part of a group of three subjects, and as part of a group of six subjects. The results from the experiment showed that the subjects make more ra-tional decisions, being in the larger group. The four-factor (a p-value, a group size, a period, and num-ber of subjects) experimental design shows that the Factors “p-value” and “Number of subjects” main effects were significant. Further, the Factor “p-value” by Factor “Group size,” the Factor “Group size” by Factor “Period,” the Factor “Group size” by Factor “Number of subjects,” and the Factor “Period” by Factor “Number of subjects” interactions were also significant.

2020 ◽  
Vol 25 (1) ◽  
pp. 113-119
Author(s):  
Ricardo Otero-Caicedo ◽  
Zuleny Cuarán Cuarán Zuleny ◽  
Wendy Marcela Fong Amarís ◽  
Rodolfo Alberto López Pimiento ◽  
Maribel Martínez Lozano

It has been reported that the decrease in performance of airplane pilots, due to extreme work conditions, could potentially lead to an accident. Additionally, exposure to heat conditions has been linked to increased accident rates. The objective of this experimental study was to examine the influence of temperature (21°C and 35°C) and the maneuver complexity, in the pilots’ performance, measured by the time spent to complete a maneuver, using a Static Flight Driving Device simulator. We used an experimental design with ten () professional pilots who had an average flight experience of 420 hours. The results obtained show that there is an effect of both, temperature and the maneuver difficulty, in the time needed to complete a flight maneuver. Maneuvers that are more complex  or expose pilots to heat , increase the time to complete a maneuver. Even though the interaction term had a p-value of 0.103, what was seen in the experiment suggest that the temperature has a bigger effect when the maneuver is considered difficult.


Author(s):  
Juliana Widyastuti Wahyuningsih Juliana Widyastuti Wahyuningsih

ABSTRAK Tidur merupakan kebutuhan yang harus terpenuhi terutama pada fase perkembangan karena selama tidur akan terjadi perkembangan otak maupun tubuh, sehingga gangguan tidur merupakan masalah yang akan menimbulkan dampak buruk terhadap pertumbuhan dan perkembangan bayi. Kualitas tidur bayi yang baik dapat diciptakan dengan memberikan pemijatan bayi secara rutin. Penelitian ini bertujuan untuk membuktikan bahwa pemijatan dapat mempengaruhi kualitas tidur bayi umur 0-3 bulan. Penelitian ini menggunakan desain penelitian Quasy Eksperimental dengan metode One Group Pretest-Postest. Sampel 22 bayi yang dipilih dengan tehnik Total Sampling yang di observasi sebelum dan sesudah diberikan pemijatan. Variabel yang diukur dalam penelitian ini adalah kualitas tidur bayi 0-3 bulan. Hasil penelitian menunjukkan bahwa ada pengaruh pijat bayi terhadap kualitas tidur bayi umur 0-3 bulan (p value  0,008 < α = 0,05).Berdasarkan hasil penelitian ini disarankan agar keluarga dan masyarakat memberikan pemijatan secara rutin dan mandiri untuk meningkatkan kebutuhan tidur bayi yang berkualitas.   ABSTRACT Sleep is a human necessity that must be met, especially in the development phase because during sleep will occur the brain and body developments, so that sleep disturbance is a problem that would cause adverse effects on infants’ growth and development. The good quality of sleep can be created by providing the infants massage routinely. This study aimed to prove that the massage could affect the quality of sleep on the 0-3 months old baby. This study used Quasy-experimental design with One Group Pretest-Posttest. The sample 22 infants selected by total sampling technique observed on before and after the massage. The variables measured in this study are the quality of sleep. The results of study indicate that there is an effect of infant massage to the sleep quality on 0-3 months old babies (p value 0,008 < α = 0,05).Based on the results of this study it recommended for the families and communities to provide infant massage regularly and independently to increase the quality of sleep on the baby.  


Objective: While the use of intraoperative laser angiography (SPY) is increasing in mastectomy patients, its impact in the operating room to change the type of reconstruction performed has not been well described. The purpose of this study is to investigate whether SPY angiography influences post-mastectomy reconstruction decisions and outcomes. Methods and materials: A retrospective analysis of mastectomy patients with reconstruction at a single institution was performed from 2015-2017.All patients underwent intraoperative SPY after mastectomy but prior to reconstruction. SPY results were defined as ‘good’, ‘questionable’, ‘bad’, or ‘had skin excised’. Complications within 60 days of surgery were compared between those whose SPY results did not change the type of reconstruction done versus those who did. Preoperative and intraoperative variables were entered into multivariable logistic regression models if significant at the univariate level. A p-value <0.05 was considered significant. Results: 267 mastectomies were identified, 42 underwent a change in the type of planned reconstruction due to intraoperative SPY results. Of the 42 breasts that underwent a change in reconstruction, 6 had a ‘good’ SPY result, 10 ‘questionable’, 25 ‘bad’, and 2 ‘had areas excised’ (p<0.01). After multivariable analysis, predictors of skin necrosis included patients with ‘questionable’ SPY results (p<0.01, OR: 8.1, 95%CI: 2.06 – 32.2) and smokers (p<0.01, OR:5.7, 95%CI: 1.5 – 21.2). Predictors of any complication included a change in reconstruction (p<0.05, OR:4.5, 95%CI: 1.4-14.9) and ‘questionable’ SPY result (p<0.01, OR: 4.4, 95%CI: 1.6-14.9). Conclusion: SPY angiography results strongly influence intraoperative surgical decisions regarding the type of reconstruction performed. Patients most at risk for flap necrosis and complication post-mastectomy are those with questionable SPY results.


2021 ◽  
pp. 204275302098701
Author(s):  
Ünal Çakıroğlu ◽  
Mustafa Güler

This study attempts to determine whether gamification can be used as a pedagogical technique to overcome the challenges in teaching statistics. A post-test quasi-experimental design was carried out in gamified and non-gamified groups in order to reveal the effect of gamification elements in cultivating students’ statistical literacy skills. Students in gamified group were also interviewed to understand the function of gamification process. The results suggest that; although gamifying the instructional process had a positive impact on developing students’ statistical literacy in medium and high score students; surprisingly the influence of the gamification to the low- achieved scores were not positive. The positive impact was discussed in accordance with the gradual structure of statistical literacy and suggestions for successful gamification applications due to the context were included.


BMJ Open ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. e041673
Author(s):  
Nicole E M Jaspers ◽  
Frank L J Visseren ◽  
Yolanda van der Graaf ◽  
Yvo M Smulders ◽  
Olga C Damman ◽  
...  

ObjectiveTo determine whether communicating personalised statin therapy-effects obtained by prognostic algorithm leads to lower decisional conflict associated with statin use in patients with stable cardiovascular disease (CVD) compared with standard (non-personalised) therapy-effects.DesignHypothesis-blinded, three-armed randomised controlled trialSetting and participants303 statin users with stable CVD enrolled in a cohortInterventionParticipants were randomised in a 1:1:1 ratio to standard practice (control-group) or one of two intervention arms. Intervention arms received standard practice plus (1) a personalised health profile, (2) educational videos and (3) a structured telephone consultation. Intervention arms received personalised estimates of prognostic changes associated with both discontinuation of current statin and intensification to the most potent statin type and dose (ie, atorvastatin 80 mg). Intervention arms differed in how these changes were expressed: either change in individual 10-year absolute CVD risk (iAR-group) or CVD-free life-expectancy (iLE-group) calculated with the SMART-REACH model (http://U-Prevent.com).OutcomePrimary outcome was patient decisional conflict score (DCS) after 1 month. The score varies from 0 (no conflict) to 100 (high conflict). Secondary outcomes were collected at 1 or 6 months: DCS, quality of life, illness perception, patient activation, patient perception of statin efficacy and shared decision-making, self-reported statin adherence, understanding of statin-therapy, post-randomisation low-density lipoprotein cholesterol level and physician opinion of the intervention. Outcomes are reported as median (25th– 75th percentile).ResultsDecisional conflict differed between the intervention arms: median control 27 (20–43), iAR-group 22 (11–30; p-value vs control 0.001) and iLE-group 25 (10–31; p-value vs control 0.021). No differences in secondary outcomes were observed.ConclusionIn patients with clinically manifest CVD, providing personalised estimations of treatment-effects resulted in a small but significant decrease in decisional conflict after 1 month. The results support the use of personalised predictions for supporting decision-making.Trial registrationNTR6227/NL6080.


2016 ◽  
Vol 128 ◽  
pp. 132-142 ◽  
Author(s):  
Paz Arroyo ◽  
Camila Fuenzalida ◽  
Alex Albert ◽  
Matthew R. Hallowell

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