Perilaku Penggunaan Alat Pelindung Diri pada Petani Sayur

Farmers in the processing of land and plants need pesticides to eradicate pests and weeds. Pesticide is a material that has many benefits for the sustainability of the world of agricultural production. Many plant destruction organisms that can reduce yields can be minimized with pesticides, but on the other hand, pesticides can harm the health of the farmers. To prevent the danger of using pesticides against self-purification, one must use personal protective equipment (PPE) in a complete and precise manner. The purpose of this research is to determine what are the factors related to the use of personal protective equipment on pesticide user farmers in Taeno village in 2019. This research is analytical research with a cross-sectional approach. This research sample amounted to 105 farmers—data collection using questionnaires, interviews, and observation. The data obtained is then processed with a statistical test of chi-square. Based on statistical test bivariate of knowledge variables associated with APD, the attitude variables are not associated with the use of the PPE, and the action variables are associated with the use of the PPE. The results showed that the variables associated with PPE use are variable knowledge (ρ = 0.025) and action variables (ρ = 0.015). The unrelated variables are the attitude variables (ρ = 0.137)—knowledge and action variables associated with PPE use.

Penerapan Pembelajaran Inquiry Terbimbing Untuk Meningkatkan Motivasi Dan Hasil Belajar IPA Pada Materi Gaya Dan Hukum Newton Terhadap Siswa SMP Negeri 2 Tanete Riaja Kabupaten Barru

This study aims to determine the motivation and learning outcomes of class VIII-3 students who are taught by a guided inquiry learning model on the material of Newton's Law and style. This research is a classroom action research consisting of two cycles. Each cycle consists of four stages including planning, acting, observing, and reflecting. In this study, there are two types of variables studied, namely: problem variables, namely motivation and science learning outcomes, and action variables, namely the application of guided inquiry learning. The instrument used to measure in this study was a motivation questionnaire instrument and a test sheet. The data analysis used was descriptive statistics. The results of this study indicate that the application of Guided Inquiry learning can improve motivation and science learning outcomes in Newtonian force and law material for class VIII-3 students of SMP Negeri 2 Tanete Riaja.

Galactic bars: a look at the point of view of action variables

We have translated the results of bar modeling in N-body simulations into the language of action variables JR, Lz and Jz. We used the AGAMA package and the formalism associated with the Steckel potential. Action variables were calculated in the changing non axisymmetric potential of the model at different moments of the bar evolution. We found that at the later stages of the bar evolution, the maximum values of JR are reached at its ends, after which, upon going to the disk, JR decreases monotonically. As for Jz, the maximum values of Jz actually outline the B/PS bulge, the thickest part of the bar. Such a behavior of the action variables can be used for tests to identify the features of the bar of our Galaxy based on GAIA data.

Activities and characteristics of a manager in the function of improving the strategic activity of a company

The paper deals with the analysis of the role of activities and characteristics of the manager as a factor in improving the strategic activity of a company. The survey included 327 managers of different levels who are employed in companies operating on the territory of the Republic of Serbia. Correlation analysis confirmed statistically significant relationships between observed activity variables and managerial characteristics and strategic action variables. The regression method confirmed that the variables communication and innovation and flexibility had the greatest influence on all analyzed variables of strategic action, while the variables of activity and characteristics of managers had the greatest importance on the variables of strategic decision making and quality of vision and mission. The aim of the presented research is to point out the importance of activities and characteristics of managers with the goal of business promotion, primarily through strategic action, and that they can be crucial for improving the market and competitive position of companies.

Influence of activities and characteristics of managers on the efficiency of strategic activities of companies in Serbia

The presented research in this paper is to determine the impact of activities and characteristics of managers on the efficiency of strategic action of the company. The research included 327 managers from companies in Serbia. Correlation analysis determined the existence of statistically significant relationships between activity variables and characteristics of managers and strategic action variables. The variable communication with the variables improvement of quality and competitiveness of business, and the variable innovation and flexibility with the variables quality of vision and mission and strategic planning and decision-making showed an important connection. The regression method determined that the characteristic variables, which showed the greatest influence on the strategic operation of the company, communication, innovation and flexibility and improvement of knowledge. Factor analysis yielded a two-component solution, where the first factor brought together the variables of activity and characteristics of the manager, and the second factor the variable strategic action, and a high correlation was established between these two factors. These results indicate that the improvement of activities and characteristics of managers ensures the efficiency of strategic activities of the company. The aim of this paper is to point out the characteristic activities of management that have a great contribution to improving the efficiency of business and strategic operations of the company. Managers of domestic companies should base the improvement of business and competitiveness on the improvement of activities and characteristics of managers that have been singled out in this research.

A simple, heuristic derivation of the Balescu-Lenard kinetic equation for stellar systems

The unshielded nature of gravity means that stellar systems are inherently inhomogeneous. As a result, stars do not move in straight lines. This obvious fact severely complicates the kinetic theory of stellar systems because position and velocity turn out to be poor coordinates with which to describe stellar orbits – instead, one must use angle-action variables. Moreover, the slow relaxation of star clusters and galaxies can be enhanced or suppressed by collective interactions (‘polarisation’ effects) involving many stars simultaneously. These collective effects are also present in plasmas; in that case they are accounted for by the Balescu-Lenard (BL) equation, which is a kinetic equation in velocity space. Recently, several authors have shown how to account for both inhomogeneity and collective effects in the kinetic theory of stellar systems by deriving an angle-action generalisation of the BL equation. Unfortunately their derivations are long and complicated, involving multiple coordinate transforms, contour integrals in the complex plane, and so on. On the other hand, Rostoker’s superposition principle allows one to pretend that a long-range interacting N-body system, such as a plasma or star cluster, consists merely of uncorrelated particles that are ‘dressed’ by polarisation clouds. In this paper we use Rostoker’s principle to provide a simple, intuitive derivation of the BL equation for stellar systems which is much shorter than others in the literature. It also allows us to straightforwardly connect the BL picture of self-gravitating kinetics to the classical ‘two-body relaxation’ theory of uncorrelated flybys pioneered by Chandrasekhar.

Angle-action variables for orbits trapped at a Lindblad resonance

ABSTRACT The conventional approach to orbit trapping at Lindblad resonances via a pendulum equation fails when the parent of the trapped orbits is too circular. The problem is explained and resolved in the context of the Torus Mapper and a realistic Galaxy model. Tori are computed for orbits trapped at both the inner and outer Lindblad resonances of our Galaxy. At the outer Lindblad resonance, orbits are quasi-periodic and can be accurately fitted by torus mapping. At the inner Lindblad resonance, orbits are significantly chaotic although far from ergodic, and each orbit explores a small range of tori obtained by torus mapping.

Task Scoping for Efficient Planning in Open Worlds (Student Abstract)

We propose an abstraction method for open-world environments expressed as Factored Markov Decision Processes (FMDPs) with very large state and action spaces. Our method prunes state and action variables that are irrelevant to the optimal value function on the state subspace the agent would visit when following any optimal policy from the initial state. This method thus enables tractable fast planning within large open-world FMDPs.

Making Decisions and Motor Actions with Technical Biomechanical Classifications in Male Judo Weight Categories

The aim of the study was to compare motor action variables of judo combat phases and technical biomechanical assessment of the seven weight categories. The sample was composed of 638 bouts (176 of extra lightweight <66 kg, 289 of half lightweight 66 > 73 kg, 180 of lightweight 73 > 81 kg, 244 of half middleweight 81 > 90 kg, 174 of middleweight 81 > 90 kg, 151 of half heavyweight 90 > 100 kg and 142 of heavyweight >100 kg) during motor actions of approach, gripping, attack, defense and groundwork combat phases, verifying the interactions between them by Markov chains and comparisons by Kruskall-Wallis and Dunn post hoc tests (p ≤ .05). The results demonstrated that lighter weight categories showed higher approach phases than the heavyweight category, and the lightweight group demonstrated higher defensive action frequencies than the half lightweight category and heavyweight athletes. Heavyweight and middleweight categories demonstrated higher groundwork combat frequencies than lighter weights, and the heavyweight category showed higher pause frequencies than the lightweight category. Regarding the decision-making model, the main transitions presented by the Markov chains showed higher prevalence of the following combinations: gripping occurring before the lever and length attacks, lever attack followed by the length attack, and length attack occurring earlier than the groundwork phase.