Locational Analysis of the Distributions of Fire Extinguisher Stations in Koya With the Use of Geographic Information Systems

The distribution and the competence of firefighting stations in koya town is one of the main problems that this town suffers from, and this led us to conduct an academic study in this respect with the use of Geographic Information Systems. This system illustrates the competence and the services of firefighting stations according to world standard in terms of the times that they take (3-5 minutes) to arrive at the destination according to the distance and the road network, so based on these criteria, the firefighting service can only cover (34%) of the town. It can be deduced that this problem mainly results from misdistribution of firefighting stations and the poor road transportation network. This study, basing on the universal standards, proposes five new firefighting stations in koya in order to be able to cover the whole town and offer a good service in this respect for the present time and for future.

Up-Skilling and Re-Skilling Teachers on Vocational High School with Industry Needs

The development era demands the skills of teachers to meet needs and adjust. This means that the teacher's ability to upgrade is needed. The objectives of this study were (1) to determine the up-skilling that must be done by vocational school teachers with world-standard work era 4.0; and (2) knowing the concrete steps that must be taken by vocational schools teachers in re-skilling the world-standard work era 4.0. The method used in this research is qualitative with a case study approach. The technique of determining participants using purposive sampling. Participants in this study were vocational school teachers, vocational schools service branches, and widyaiswara. Data collection techniques using structured interviews by preparing interview guidelines. Data analysis using Creswell case study data analysis model, namely (1) data management; (2) memoing; (3) exposure; (4) classification; and (5) interpretation. Data analysis in the study was carried out with the assistance of Software Altas. ti version 8. The results of this study are (1) up-skilling of industrial standard vocational school teachers in the era of 4.0 needs to be done with three components, namely (a) develop new skills; (b) time-to-hire; (c) competency assessment. Meanwhile, (2) re-skilling of vocational schools teachers with industrial standard era 4.0 consists of three components, namely (a) intelligent digital tools; (b) create new tasks and occupations; and (c) coaching programs. This implication can be used for widyaiswara in providing training to vocational school teachers.

Soil to Cassava Transfer Factors of Natural Radionuclides in Farms in Ini Local Government Area, Akwa Ibom State, Nigeria

Knowledge of activity concentration of radionuclides in soil of our farmlands and the consequent transfer factors of the radionuclide to plants are necessary to estimate the contamination level of the soil, plants and food. The activity concentration of 40K, 238U and 232Th in soils and cassava in Ini Local Government Area, Akwa Ibom State, Nigeria were measured using gamma spectrometry. Activity concentrations of radionuclides in soils in the locations ranged from BDL (below detectable limit) to 298.76 ± 21.40 Bq/Kg for 40K; BDL to 7.95 ± 1.88 Bq/Kg for 238U and 2.59 ± 0.25 to 16.56 ± 1.61 Bq/Kg for 232Th. Activity concentration of the radionuclides in cassava in all locations ranged from 213.96 ± 15.38 Bq/kg to 520.58 ± 37.25 Bq//Kg for 40K; BDL to 33.02 ± 8.91 Bg/Kg for 238U and BDL to 16.34 ± 1.59 Bq/kg for 232Th. The activity concentrations of all the radionuclides were lower than the world standard. Transfer factors obtained ranged between 3.21 to 4.18 for 40K; 0.93 to 12.64 for 238U and 0.75 to 1.01 for 232Th. Effective ingestion dose due to the consumption of cassava from the studied area obtained ranged between 1.31 to 1.74 mSv/yr and 3.52 to 4.69 mSv/yr for children and adult respectively. These values are above the 1.0 mSv/yr recommended dose limit for general public, therefore the consumption of this food stuff could pose a radiological health effect on humans. However the risk could be minimized when the cassava is cooked.

Trends of HIV Mortality between 2001 and 2018: An Observational Analysis

Since the beginning of the epidemic in the early 1980s, HIV-related illnesses have led to the deaths of over 32.7 million individuals. The objective of this study was to describe current mortality rates for HIV through an observational analysis of HIV mortality data from 2001 to 2018 from the World Health Organization (WHO) Mortality Database. We computed age-standardized death rates (ASDRs) per 100,000 people using the World Standard Population. We plotted trends using locally weighted scatterplot smoothing (LOWESS). Data for females were available for 42 countries. In total, 31/48 (64.60%) and 25/42 (59.52%) countries showed decreases in mortality in males and females, respectively. South Africa had the highest ASDRs for both males (467.7/100,000) and females (391.1/100,000). The lowest mortalities were noted in Egypt for males (0.2/100,000) and in Japan for females (0.01/100,000). Kyrgyzstan had the greatest increase in mortality for males (+6998.6%). Estonia had the greatest increase in mortality for females (+5877.56%). The disparity between Egypt (the lowest) and South Africa (the highest) was 3042-fold for males. Between Japan and South Africa, the disparity was 43,454-fold for females. Although there was a decrease in mortality attributed to HIV among most of the countries studied, a rising trend remained in a number of developing countries.

The new innovative optic complete method of identification of oil and its fraction

Development and demonstration of a new method for highly accurate forecasting of the hydrocarbon composition of oil based on determining the spectrum of its universal material constant–dielectric function, as by direct measurement using the method of spectroscopic ellipsometry, are today accepted as the world standard for determining the optical functions of any substance in a liquid or solid state, and by its quantum-mechanical calculation from first principles to complete coincidence with the measurement results. A methodology will be proposed for the complete description of any oil and the identification of it belonging to a particular oilfield. The methodology is not only universal and highly accurate, but also economical. In this work, we obtained several groups of fractions of crude oilsamples from different oil fields in Azerbaijan, which were accessed by spectroscopic ellipsometry over the 1.5–6.5 eV spectral range at room-temperature. Optical constants and dielectric function were obtained for massive samples of each substance and fractions. The proposed method is a complete dielectric fingerprint of oils for widespread use, including for environmental monitoring of oil-contaminated areas of the sea and land.

Cryptanalysis of the SoDark Cipher for HF Radio Automatic Link Establishment

The SoDark cipher is used to protect transmitted frames in the second and third generation automatic link establishment (ALE) standards for high frequency (HF) radios. The cipher is primarily meant to prevent unauthorized linking and attacks on the availability of HF radio networks. This paper represents the first known security analysis of the cipher used by the second generation ALE protocol—the de facto world standard—and presents a related-tweak attack on the full eight round version of the algorithm. Under certain conditions, collisions of intermediate states several rounds into the cipher can be detected from the ciphertext with high probability. This enables testing against the intermediate states using only parts of the key. The best attack is a chosen-ciphertext attack which can recover the secret key in about an hour with 100% probability, using 29 chosen ciphertexts.

Total column ozone measurements by the Dobson spectrophotometer at Belsk (Poland) for the period 1963–2019: homogenization and adjustment to the Brewer spectrophotometer

The total column ozone (TCO3) measurements by the Dobson spectrophotometer (serial no. 84) have been carried out at Belsk station (51∘50′ N, 20∘47′ E), Poland, since 23 March 1963. In total, ∼115 000 intraday manual observations were made by 31 December 2019. These observations were performed for different combinations of double wavelength pairs in the ultraviolet range and observation types, i.e., direct sun (DS), zenith blue (ZB), and zenith cloudy (ZC) depending on weather conditions. The long-term stability of the instrument was supported by frequent (almost every 4 years) intercomparisons with the world standard spectrophotometer. Trend analyses, based on the monthly and yearly averaged TCO3, can be carried out without any additional corrections to the intraday values. To adjust these data to the Brewer spectrophotometer observations, which were also performed at Belsk, a procedure is proposed to account for less accurate Dobson observations under low solar elevation, presence of clouds, and the temperature dependence of ozone absorption. The adjusted time series shows that the Brewer–Dobson monthly averaged differences are in the range of about ±0.5 %. The intraday TCO3 database, divided into three periods (1963–1979, 1980–1999, and 2000–2019), is freely available at https://doi.org/10.1594/PANGAEA.919378 (Rajewska-Więch et al., 2020).

Analysis of the types of agricultural sprayers’ nozzles

The article provides an analysis of modern types of sprayer sprayers, as well as the most popular and versatile type of sprayers suitable for most different types of agricultural crops. The characteristics of the volumetric flow rate of the working fluid by sprayers according to the world standard - ISO 10625 are reflected. Recommendations are given for installing the sprayer rod, depending on the angle of spray and the frequency of installation of sprayers. Various materials for the manufacture of sprayers and their average operating life expressed in thousand hectares are analyzed. The results of the study show a comparison of the two main types of sprayers – slot and injection, used for most herbicides, systemic phengicides, pesticides, insecticides, etc. The conclusions provide recommendations on the optimal choice of the type of sprayer for applying chemical plant protection products and for applying liquid mineral fertilizers.