Air Force Institute of Technology Research Report 2020

This Research Report presents the FY20 research statistics and contributions of the Graduate School of Engineering and Management (EN) at AFIT. AFIT research interests and faculty expertise cover a broad spectrum of technical areas related to USAF needs, as reflected by the range of topics addressed in the faculty and student publications listed in this report. In most cases, the research work reported herein is directly sponsored by one or more USAF or DOD agencies. AFIT welcomes the opportunity to conduct research on additional topics of interest to the USAF, DOD, and other federal organizations when adequate manpower and financial resources are available and/or provided by a sponsor. In addition, AFIT provides research collaboration and technology transfer benefits to the public through Cooperative Research and Development Agreements (CRADAs). Interested individuals may discuss ideas for new research collaborations, potential CRADAs, or research proposals with individual faculty using the contact information in this document

Programa “barritas” en la resolución de problemas matemáticos aditivos en estudiantes de tercer grado de primaria - 2020

La investigación tuvo como finalidad determinar la influencia del Programa “Barritas” en la resolución de problemas de cantidades del área matemática en estudiantes de tercer grado de primaria – 2020. El enfoque del estudio fue cuantitativo, de diseño pre experimental y tipo aplicada. Se consideró una población de 18 estudiantes de tercer grado de primaria de una institución educativa, a quienes se aplicó dos pruebas de matemáticas (pre-test y pos-test), en dos momentos distintos. Para el procesamiento de información se empleó pruebas de la estadística descriptiva (tablas y gráficos de frecuencias) e inferencial (Test de Shapiro–Wilk, “t” de student y Wilcoxon). El resultado, indica que, el Programa “barritas” influye significativamente en la resolución de problemas de cantidades del área matemática en estudiantes de tercer grado de primaria – 2020. Hallazgos evidenciados mediante la prueba de t de Student, donde se encontró que existe diferencia entre el promedio de pre- test y post- test, con un nivel de significancia = 0,00 y un t = 05,242

Ammonia risk assessment model in logistical subsystems

Razvijen je model za procenu rizika amonijaka u logistiĉkim podsistemima. Navedene su osnovne parametarske i neparametarske statistiĉke karakteristike akcidenata sa amonijakom po logistiĉkim podsistemima. Raspodele hospitalizovanih, nehospitalizovanih i nastradalih uĉesnika akcidenata imaju homogene zakone, zasnovane na Vejbulovoj raspodeli. Hospitalizovani preminuli uĉesnici su raspodeljeni po Binomnoj raspodeli. Najveći broj uĉesnika u akcidentu amonijaka je ustanovljen u logistiĉkom podsistemu proizvodnje, proseĉno 8,8750. Kritiĉan rizik amonijaka je ustanovljen u logistiĉkom podsistemu pretovara.Ammonia risk assessment model in logistical subsystems has been developed. Basic parametric and non-parametric statistical characteristics of ammonia accidents by logistic subsystems are given. Distributions of hospitalized, non-hospitalized, and injured accident participants have homogeneous laws, based on the Weibull distribution. Hospitalized deceased participants were distributed by Binomial distribution. The largest number of participants in the ammonia incident was established in the logistics subsystem of production, with an average of 8.8750. Critical risk of ammonia is established in the logistic subsystem of reloading