Adaptation of Fire-Fighting Systems to Localization of Fires in the Premises: Review

Fire protection is a basic safety issue for all categories of buildings. The criteria for effective fire suppression and the characteristics of extinguishing systems in insulated areas depend on a combination of factors. The main influences include the type of combustible material, ambient temperature, type of spray extinguisher, air inflow and outflow conditions, and space geometry. This article analyzes the most widely used fire-extinguishing technologies in different locations. The main aspects of using the pulsed delivery technology of extinguishing liquid are considered. Based on the analysis of publications from the last decade, it is possible to develop intelligent systems for recording fires and extinguishing fires in the premises.

Modular curves and the refined distance conjecture

We test the refined distance conjecture in the vector multiplet moduli space of 4D $$ \mathcal{N} $$ N = 2 compactifications of the type IIA string that admit a dual heterotic description. In the weakly coupled regime of the heterotic string, the moduli space geometry is governed by the perturbative heterotic dualities, which allows for exact computations. This is reflected in the type IIA frame through the existence of a K3 fibration. We identify the degree d = 2N of the K3 fiber as a parameter that could potentially lead to large distances, which is substantiated by studying several explicit models. The moduli space geometry degenerates into the modular curve for the congruence subgroup Γ0(N)+. In order to probe the large N regime, we initiate the study of Calabi-Yau threefolds fibered by general degree d > 8 K3 surfaces by suggesting a construction as complete intersections in Grassmann bundles.

Model Matematika Kurva Kuartik Bezier Hasil Modifikasi Kubik Bezier

The creative industries have become the government's attention for contributing to economic accretion. But due the lack of artistic creativity and appeal, the evolution of creative industries craft section is not optimal. So that it was needed a variations of relief items to increase the attractiveness. In general, industrial objects design are still limited to the space geometry objects or a Bezier curve of degree two. Therefore, Bezier curves of degree is selected and modified it into a quartic Bezier forms and then applied to the design of industrial objects (glassware). The purpose of this research is to determine the formula of quartic Bezier from of qubic Bezier modifications and to determine the rotary surface shape of quartic Bezier from cubic Bezier modifications. Then, from some form of revolving surface of modified cubic Bezier the glassware designs are generated. The results of this research are, first, the formula of quartic Bezier result of Bezier cubic modifications. Second, the form of revolving surface of modified cubic Bezier which is influenced by five control points and parameter selection . For further Research it is expected to develop a modification of cubic Bezier into Bezier of degree-

THE EFFECTIVENESS GEOGEBRA ON SOFTWARE IN TEACHING

This study aimed to clarify the Effectiveness GeoGebra on Software in Teaching " Space Geometry in the Development of Spatial Abilities and Achievement of Eleventh Grade and tried to answer the following two questions: 1. What is the Effectiveness of using GeoGebra Software in Teaching " Space Geometry of eleventh-grade students? To answer these questions, a sample of (52) eleventh-grade students was chosen and divided into two groups: an experimental group with (25) students, studied using GeoGebra Software, and a control group with (27) students, studied using the usual way. To attain the purpose of the study, an educational material for the unit of " Space Geometry " of grade eleven was prepared according to GeoGebra Software Also, GeoGebra Software Achievement test The study result showed statistically significant differences at the level (α=0,05) between the mean score of the experimental group and the mean score of the control group in the GeoGebra Software Achievement test group who studied using GeoGebra Software. In light of these results, the study recommended the importance to enter the GeoGebra of anther dynamic program in the math , to study Space Geometry and providing appropriate and encouraging study environment to improve students. Keywords: Geogebra, Space Engineering, Software

PENGEMBANGAN MODUL GEOMETRI RUANG BERBASIS STRUCTURED INQUIRY UNTUK SISWA KELAS V SD

This research was aimed to produce mathematic module in the content of space geometry. The method used in this research is research and development (R&D) with an adaptation of ADDIE development models. This research can only carried out from expert judgment, which media expert, material expert, and language expert. The collection data techniques include interview, and questionnaire. The result for this space geometry module obtained 90.00% from materials expert, 80.80% from media expert, and 84.00% from language expert. Based on the results from the three of expert, obtained an average score 83.84%. It shows that space geometry module based on structured inquiry can be categorized as very good with score range 81%-100%, and it can be use as one of teaching suplementary material’s reference for space geometry content to upgrade the concepts understanding of 5th grade elementary school students.