Personality and Motivational Factors of U. S. Naval Academy Graduates as Indicators of Aviation Mishap Potential

1983 ◽  
Vol 27 (10) ◽  
pp. 838-842
Author(s):  
Robert A. Alkov ◽  
Michael S. Borowsky ◽  
John A. Gaynor ◽  
Karel Montor
Keyword(s):  
Normal Distribution ◽  
Motivational Factors ◽  
Personality Characteristics ◽  
Naval Academy ◽  
Chi Square ◽  
Accident Proneness ◽  
Chi Square Test ◽  
Naval Aviators

Although the concept of accident-proneness has fallen into disfavor because of the failure to statistically identify accident repeaters from their personality characteristics, it may be possible to predict mishap liability for those who enter a military flying career. The 16PF, Motivational Analysis Test and the Athletic Motivation Inventory administered to U. S. Naval Academy freshman classes were examined. Scores of over 1700 graduates from the classes of 1975-1981, who were subsequently designated as naval aviators, were studied. Using their flight hours and mishaps accumulated during the first two to five years of their flying careers, a mishap rate was calculated for low and high groups on each personal dimension. Scores were placed into ten stens within each dimension (e.g., reserved-outgoing) based on the standardization sampling of all U. S. college undergraduates. Due to the normal distribution of scores, stens 1 and 10 had very low numbers. Any rate based on so few cases was very unstable. One or two mishaps could change the rate dramatically. Therefore, the mishap rates were examined by grouping stens. A chi square test was used to determine if sten ranges differed significantly in their aircraft mishap rates. There were 9 of 67 dimensions in which the sten ranges differed significantly. These are discussed.

Prediction of Haemoglobin Level by Some Probability Distribution

2020 ◽  
Vol 9 (1) ◽  
pp. 84-88
Author(s):  
Govinda Prasad Dhungana ◽  
Laxmi Prasad Sapkota
Keyword(s):  
Probability Distribution ◽  
Normal Distribution ◽  
Goodness Of Fit ◽  
Continuous Variable ◽  
Hemoglobin Level ◽  
Chi Square ◽  
Chi Square Test ◽  
Log Normal ◽  
Two Parameters ◽  
Best Fit

 Hemoglobin level is a continuous variable. So, it follows some theoretical probability distribution Normal, Log-normal, Gamma and Weibull distribution having two parameters. There is low variation in observed and expected frequency of Normal distribution in bar diagram. Similarly, calculated value of chi-square test (goodness of fit) is observed which is lower in Normal distribution. Furthermore, plot of PDFof Normal distribution covers larger area of histogram than all of other distribution. Hence Normal distribution is the best fit to predict the hemoglobin level in future.

scholarly journals PEMILIHAN DISTRIBUSI PROBABILITAS PADA ANALISA HUJAN DENGAN METODE GOODNESS OF FIT TEST

2016 ◽  
Vol 18 (2) ◽  
pp. 139-148
Author(s):  
Togani Cahyadi Upomo ◽  
Rini Kusumawardani
Keyword(s):  
Normal Distribution ◽  
Goodness Of Fit ◽  
Gumbel Distribution ◽  
Rainfall Event ◽  
Goodness Of Fit Test ◽  
Chi Square ◽  
Chi Square Test ◽  
Log Normal ◽  
Log Normal Distribution ◽  
Pearson Iii Distribution

Rainfall event is a stochastic process, so to explain and analyze this processes the probability theory and frequency analysisare used. There are four types of probability distributions.They are normal, log normal, log Pearson III and Gumbel. To find the best probabilities distribution, it will used goodness of fit test. The tests consist of chi-square and smirnov-kolmogorov. Results of the chi-square test for normal distribution, log normal and log Pearson III was 0.200, while for the Gumbel distribution was 2.333. Results of Smirnov Kolmogorov test for normal distribution D = 0.1554, log-normal distribution D = 0.1103, log Pearson III distribution D = 0.1177 and Gumbel distribution D = 0.095. All of the distribution can be accepted with a confidence level of 95%, but the best distribution is log normal distribution.Kejadian hujan merupakan proses stokastik, sehingga untuk keperluan analisa dan menjelaskan proses stokastik tersebut digunakan teori probabilitas dan analisa frekuensi. Terdapat empat jenis distribusi probabilitas yaitu distribusi normal, log normal, log pearson III dan gumbel. Untuk mencari distribusi probabilitas terbaik maka akan digunakan pengujian metode goodness of fit test. Pengujian tersebut meliputi uji chi-kuadrat dan uji smirnov kolmogorov. Hasil pengujian chi kuadrat untuk distribusi normal, log normal dan log pearson III adalah 0.200, sedangkan untuk distribusi gumbel 2.333. Hasil pengujian smirnov kolmogorov untuk distribusi normal dengan nilai D = 0.1554, distribusi log normal dengan nilai D = 0.1103, distribusi log pearson III dengan nilai D = 0.1177 dan distribusi gumbel dengan nilai D = 0.095. Seluruh distribusi dapat diterima dengan tingkat kepercayaan 95%, tetapi distribusi terbaik adalah distribusi log normal.

scholarly journals NONCORRALATED DATA ORDERED SAMPLES AS A SINGLE-ELEMENT MULTICHANNEL CONVERTER

2021 ◽  
Vol 2021 (3) ◽  
pp. 74-82
Author(s):  
R.O. Mazmanian ◽  
Keyword(s):  
Normal Distribution ◽  
Statistical Testing ◽  
Random Numbers ◽  
Single Element ◽  
Data Converter ◽  
Random Data ◽  
Chi Square ◽  
Chi Square Test ◽  
Probability Density Function Pdf ◽  
Statistical Criteria

The sufficient closeness of the medians of the ordered samples of random data to the normal distribution is used in computer systems for control, monitoring and diagnosing electric power equipment. However, it remains what other probability density function (pdf) of elements (sample statistics) have such similarities. This paper presents various methods for statistical testing hypotheses for pdf-converter channels as statistics of given sizes odd numbered and ordered samples of bounded and uniformly distributed random numbers. The use of various different criteria and the results of estimates studied under the same conditions showed a sufficient conformity of the results of tests for three statistical criteria. It made possible to draw a reasonable conclusion about the preferable use of the adapted chi-square test for assessing the congruence of analytical pdf channels of the converter with normal distribution. We also suggested using the "statistical closeness window" to define those channels of the converter that do not significantly differ from the normal distribution. In addition, we presented an empirical formula determining the dependence of the size of the window of the statistical closeness window on the sample size. The results of the research are summarized in a statistical model of a multichannel uncorrelated data converter. References 27, figures 7.

scholarly journals A Clinical Study Investigating Whether the Tongue-Out Position Improves the Quality of the Anatomical Appearance of the Pharynx on CT Imaging

2021 ◽  
Vol 8 ◽  
Author(s):  
Jin-Long Wu ◽  
Rui-Gang Ge ◽  
Guang-Jian Tang
Keyword(s):  
Normal Distribution ◽  
Soft Palate ◽  
Ct Images ◽  
Chi Square ◽  
Pyriform Fossa ◽  
Kappa Test ◽  
A Value ◽  
Chi Square Test ◽  
The Difference

Objective: To evaluate the effect of using the tongue-out position on the quality of the anatomical appearance of the pharynx on computed tomography (CT) images.Methods: The data from enhanced CT thin-section images of the head and neck in 119 cases scanned were retrospectively analyzed. The cases were divided into two groups based on the position of the tip of the tongue on the images: the tongue-out group (63 cases) and non-tongue-out group (56 cases). Two observers separately evaluated the anatomy of the soft palate, uvula, palatine tonsils, epiglottis, epiglottic fossa, pyriform fossa, arytenoid folds, and tongue on all images. The Kappa test was applied to assess the consistency of scores between the two observers. In the case of data that satisfied the normal distribution, the significance of the difference in the average scores between the two groups was tested using an independent samples t-test with a value of p > 0.05. In the case of data that did not satisfy the normal distribution, the Mann–Whitney U test was adopted to test the significance of the difference in the average scores between the two groups using a value of p < 0.05. The number of cases with swallowing artifacts on the CT images in both groups was statistically analyzed and the chi-square test was used to determine whether the difference in the incidence of artifacts between the two groups was significant.Results: The Kappa test showed good consistency between the two observers scoring of the soft palate, uvula, epiglottis, epiglottic fossa, pyriform fossa, aryepiglottic folds, and tongue. The image scores of the soft palate, uvula, epiglottis, epiglottic fossa, and tongue in the tongue-out group vs. the non-tongue-out group did not satisfy the normal distribution. The Mann–Whitney U test showed that the differences in the image scores between the two groups were statistically significant in all cases (p < 0.05). The incidence of swallowing artifacts in the tongue-out group and the non-tongue-out group was 15 and 32%, respectively. The result of the chi-square test showed that the difference in the incidence of swallowing artifacts between the two groups was statistically significant (p = 0.037).Conclusion: The tongue-out position facilitated an improvement in the CT appearance of pharyngeal anatomy and was associated with a reduction in the incidence of swallowing artifacts.

scholarly journals Role Of Motivational Factors In The Development Of Profession As A Teacher

2010 ◽  
Vol 7 (3) ◽  
Author(s):  
Ishtiaq Hussain ◽  
Hafiz Inamullah ◽  
Muhammad Naseer-Ud-Din ◽  
Falak Naz ◽  
Muhammad Naeem Butt
Keyword(s):  
Random Sampling ◽  
Sampling Technique ◽  
Teaching Profession ◽  
Motivational Factors ◽  
Tabular Form ◽  
Chi Square ◽  
Chi Square Test ◽  
Selection Of ◽  
Structured Questionnaire

The main objective of this study was to identify the motivational factors in selecting a teaching profession by the teachers.  A random sampling technique was used for the selection of the sample consisting of 27 girls’ schools of District Kohat as the sample. A structured questionnaire was developed in closed format on the basis of factors identified through observation by the teachers. The data collected through the questionnaires about various aspects of the study were presented in percentages in tabular form and applied to a Chi-square test.

scholarly journals Hubungan Kecerdasan Emosional Remaja Sesuai dengan Pola Asuh Orang Tua Remaja Putri Akademi Angkatan Laut Surabaya

2021 ◽  
Vol 8 (2) ◽  
pp. 124
Author(s):  
Lolita Lestari ◽  
Ahmad Suryawan ◽  
Nur Ainy Fardana Nawangsari
Keyword(s):  
Emotional Intelligence ◽  
Parenting Style ◽  
Parenting Styles ◽  
Sampling Technique ◽  
Naval Academy ◽  
Chi Square ◽  
Cross Sectional ◽  
Chi Square Test ◽  
Role Of Parents ◽  
Cross Sectional Design

ABSTRAKKecerdasan emosional merupakan kemampuan seseorang untuk mengenali, mengelola emosi, memotivasi diri, mengenali emosi orang lain, dan kemampuan untuk membina hubungan dengan orang lain. Berdasarkan kajian pustaka dan penelitian terdahulu, kecerdasan emosi menjadi krisis yang melanda dunia pendidikan akhir-akhir ini. Peran orang tua menjadi salah satu faktor luar yang memengaruhi kecerdasan emosi remaja. Penelitian ini bertujuan untuk mengetahui hubungan kecerdasan emosional remaja sesuai dengan pola asuh orang tua remaja putri Akademi Angkatan Laut Surabaya. Metode penelitian ini adalah analitik observasional dengan rancang bangun cross sectional. Jumlah sampel sebanyak 30 remaja putri Akademi Angkatan Laut Surabaya dan 30 orang tua remaja putri tersebut dengan teknik pengambilan sampel total sampling. Variabel bebas adalah pola asuh orang tua remaja putri Akademi Angkatan Laut Surabaya. Variabel terikat adalah kecerdasan emosional remaja putri Akademi Angkatan Laut Surabaya. Instrumen yang digunakan adalah kuesioner. Analisis data menggunakan Chi Square test. Hasil penelitian menunjukkan 83,3% remaja putri Akademi Angkatan Laut Surabaya memiliki kecerdasan emosional tinggi, dengan jenis pola asuh orang tua terbanyak yang diterapkan adalah demokratis sebanyak 73,33%. Hasil uji Chi square p = 0,418 (p > 0,05). Data tersebut menunjukkan tidak ada hubungan kecerdaasan emosional remaja sesuai dengan pola asuh orang tua remaja putri Akademi Angkatan Laut Surabaya.Kata Kunci: kecerdasan emosional; remaja putri; pola asuh orang tuaABSTRACTEmotional intelligence is a persons’ ability to recognize, manage emotions, motivate own self; recognize emotions of others, and the ability to build relationships with others. Based on literature review and previous research, emotional intelligence has become a crisis that has hit the world of education lately. The role of parents is one of the external factors that affect adolescent emotional intelligence. This study was aimed to determine the relationships in adolescent emotional intelligence according to the parenting style of the female adolescent’s parents at the Surabaya Naval Academy. This research method was observational analytic with cross sectional design. The numbers of samples are 30 female adolescents of Surabaya Naval Academy and 30 parents of them with total sampling technique of sampling. The independent variable is the parenting styles of female adolescence’s parent at Surabaya Naval Academy. The dependent variable was the emotional intelligence of women adolescence of Surabaya Naval Academy. The instrument used was questionnaires. Data analysis used Chi square test. The results showed that 83,3% of female adolescence at Surabaya Naval Academy had high emotional intelligence, with the type of parenting that most applied was democratic as much 73,33%. Chi square test results p = 0.418 (p > 0.05). The data shows that there is no relationship in the emotional intelligence of adolescents according to the parenting styles of women adolescence’s parent at Surabaya Naval Academy. Keywords: emotional intelligence; women adolescent; parenting style

scholarly journals Biotherapic of Trypanosoma cruzi 17x controlled histopathological alterations in mice infected by this protozoon

2021 ◽  
Vol 10 (36) ◽  
pp. 110-114
Author(s):  
Patrícia Flora Sandri ◽  
Gislaine Janaina Sanchez Falkowski ◽  
Anélio Dias Nascimento Júnior ◽  
Miguel Spack ◽  
Neide Martins Moreira ◽  
...  
Keyword(s):  
Trypanosoma Cruzi ◽  
Normal Distribution ◽  
Controlled Trial ◽  
Giant Cells ◽  
World Health ◽  
Chi Square ◽  
Global Challenge ◽  
Chi Square Test ◽  
Health Organization

Introduction: about 10 million people worldwide suffer from Chagas’ disease [1]. The World Health Organization (WHO) has explicitly acknowledged the significance of this condition and supports the use of Complementary and Alternative Medicine by health systems integrated with conventional treatments. Even so, one century after its discovery it still represents a global challenge [1,2]. Biotherapics are ultradiluted medicines and the infection of mice by Trypanosoma cruzi is an excellent model to understand their effect [3,4]. At 8 weeks, mice are physiologically more developed than at age 4 weeks, including a more competent immune system [5]. Aim: the aim of this study was to assess the effect of biotherapic of T. cruzi in dilution 17x on liver and spleen tissue of mice of different ages infected by this protozoon. Method: in a blind, randomized controlled trial 12 male Swiss mice aged 4 and 8 weeks, infected by 1,400 blood trypomastigotes T. cruzi Y strain were divided into groups control – treated with 7% hydroalcoholic solution (CI-4=3 animals or CI-8=3 animals) and treated with biotherapic 17x (BIOT-4=3 animals or BIOT-8=8 animals). Treatment (0.2 ml biotherapic/day/animal, per gavage) started after infection was verified (4th day) and animals were sacrificed on the 3rd day of treatment. For histopathological exam, the liver and spleen were removed and fixated in 4% paraformaldehyde for 24 hours and then processed for inclusion in paraffin. Semi-serial 7mm cuts were made and subjected to hematoxylin-eosin stain. It was performed a quantitative analysis of the number of nests of amastigotes and inflammatory foci in the liver. Slides were observed under microscope Olympus BX41 (Tokyo, Japan) and images captured with camera Qcolor3 (Olympus) coupled to the microscope. In the spleen it was counted the number of nests of amastigotes and the number of foreign-body giant cells. In each organ, 20 microscopic fields/cut were counted under power 40x totaling 120 fields/animal with microscope Olympus CBA (Tokyo, Japan). To analyze data it was used software Statistica 8.0. For data not exhibiting normal distribution it was used Kruskal-Wallis’ test at 5% significance and ANOVA for the ones with normal distribution. Chi-square test was used to compare percentages. Biotherapic 17d was prepared by adding 0.9 ml of blood with T. cruzi (10E+7 trypomastigotes/ml) to 9.1 ml of distilled water in laminar flow. Following dilutions were prepared in 86% hydroalcoholic solutions up to 16x. Dilution 17x was prepared with 7% hydroalcoholic solution [6]. It was performed microbiological control and in vivo biological risk of the biotherapic. Results showed a number of colony forming units proper for use (>1CFU/ml). Intraperitoenal inoculation of the biotherapic did not cause infection in animals. This study was approved by the Ethics Committee for Animal Experimentation/UEM protocol 030/2008. Results and Discussion: in the liver, animals of group BIOT-8 exhibited less nests of amastigotes (p

Probability Distribution of Repeatability of Industrial Robots

1991 ◽  
Vol 10 (3) ◽  
pp. 276-283 ◽  
Author(s):  
Einar Ramsli
Keyword(s):  
Normal Distribution ◽  
Normal Approximation ◽  
Industrial Robot ◽  
Industrial Robots ◽  
Frequency Function ◽  
Data Sets ◽  
Chi Square ◽  
Chi Square Test ◽  
Definition Of ◽  
Accuracy And Repeatability

The accuracy with which an industrial robot brings the load to a position and holds it there is perhaps the most important characteristic of an industrial robot. Many researchers have consequently been interested in this field during recent years. A common method for characterizing an industrial robot's ability to return to a position is to use the terms "accuracy" and "repeatability, " where accuracy characterizes the degree to which the actual measured value corresponds to a com manded value and repeatability the closeness of agreement between repeated measured values, under the same condi tions, to the same commanded value (ISO definitions). The normal approximation is regularly used when calculating the repeatability. A test on this assumption for six different industrial robots is reported in this article. Two approaches for this test are used: one looks at the shape of the frequency function for the repeatability figures measured, and the second uses a chi square test on the six data sets. The different tests show that there are small chances that the deviation of an industrial robot will follow a normal distribution. It seems to be a trend that the deviation has longer tails than the normal distribution. Simulation is used to elaborate on the consequences of the invalid assumption of normality in the definition of repeat ability. The conclusion is that it is reasonable to use the normal approximation when there is no strong evidence that the deviation distribution is negatively skewed.

Hubungan Antara Menyusui Dengan Involusi Uterus Pada Ibu Nifas Fisiologis Di RSIA Aura Syifa Kabupaten Kediri

1970 ◽  
Vol 5 (2) ◽  
pp. 64
Author(s):  
Eny Sendra ◽  
Dewi Indriani
Keyword(s):  
Breast Feeding ◽  
Sampling Technique ◽  
Chi Square ◽  
Cross Sectional ◽  
Fisher Test ◽  
Key Word ◽  
Chi Square Test ◽  
The Moment

Breast feeding is giving milk to be drunk to the baby from the breast. Uterus involution is a process how the uterus return to the condition back, before pregnanting after bearing. At the moment of suckling, happens a stimulus and brings the hormones out, such as oksitosin uses not only to stimulate some muscles constraction but also to stimulate the uterus, so that the process of uterus involution happens foster. According to the explanations above, the research aimed to know about the correlation between breast feeding and uterus involution. This research’s design was, cross sectional by the population of all childbirth mothers approximately 50 persons / month. By using accidental sampling technique we got 21 sample respondents. The place of research in RSIA Aura Syifa in Kediri Regency on 16th until 22nd of June 2009. From this research’s result, we got 14 persons (66,67%) with normal uterus involution, suckled in a good way, one person (4,67%) with normal uterus involution, suckled in a wrong way, 2 persons (9,52%) with abnormal uterus involution, suckled in a good way and 4 persons (19,05%) with abnormal uterus involution, suckled in a wrong way. Statistic test which used chi-square test, counted the probability frequency in advance, from that we got 3 columns with the score, less than 5, so that chi-square can not be continued and by doing exact fisher test, the score was 0,001. Because P with the grade mistake 0,05 smaller, so the conclusion was “Ho” is rejected, it meant “there was correlation between suckling and uterus involution”. Key Word : Breast feeding, uterus involution

FAKTOR PERSONAL YANG BERHUBUNGAN DENGAN KOMITMEN ORGANISASI PERAWAT RSUD EMBUNG FATIMAH BATAM

2020 ◽  
Vol 5 (3) ◽  
pp. 875
Author(s):  
Asfri Sri Rahmadeni
Keyword(s):  
Organizational Commitment ◽  
Turnover Rate ◽  
Sampling Technique ◽  
Hospital Nurses ◽  
Test Results ◽  
Personal Factors ◽  
High Turnover ◽  
Chi Square ◽  
Cross Sectional ◽  
Chi Square Test

<p class="Normal1"><em>Commitment is the attitude or behavior of likes or dislikes shown by someone against the organization at work. Indonesia is recorded as a nurse who has a low organizational commitment (76%) so it harms services. This phenomenon in the hospital can be seen from the indicator of the high turnover rate of nurses which reaches 30.9% which exceeds the standard &lt;5%. Many factors affect organizational commitment. The purpose of this study was to analyze the Personal Factors Associated with Organizational Commitment of Hospital Nurses. This study is a cross-sectional analytic study and purposive sampling technique with a sample of 59 nurses. Chi-Square test results obtained personal factors that have a relationship with organizational commitment Nurse Hospital is age with p = 0,000 and education with p = 0,000, personal factors not related to organizational commitment are gender p = 1,053 and years of service with p = 1,147. Hospitals should conduct research/surveys on Organizational Commitment periodically as an evaluation material in the context of the organization's development and development in the future</em>.</p>

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