bluuebunny/crossref_metadata_2025 huggingface dataset:
Indonesian language education in Australia
Authors: Kohler Michelle
Published: May 2020

Since the introduction of Indonesian in the 1950s, the nature and extent of programs for studying the language in
Australian schools has varied significantly. A decade on from the national report on the state of Indonesian language education in
Australian schools that indicated a substantial decline in provision (Kohler & Mahnken,
2010), it is timely to take stock and consider how Indonesian is faring and why. This paper reports on a mixed methods
study exploring the state and nature of Indonesian language provision in government schools in Australia. The findings indicate
that while some decline continues overall, patterns of provision vary, particularly at different levels of schooling. The findings
highlight the need for a nuanced understanding of the confluence of factors impacting on Indonesian (including contending ideologies), none of which adequately capture the intrinsic value and distinctiveness of studying Indonesian in the Australian
context.
State of play of the dairy sector in Algeria: between objectives and dependencies: an overview
Authors: Meklati Fawzi Rostane , Meribai Amel , Yezli Nora , Ben-Mahdi Meriem Hind
Published: May 2020

The public authorities have invested considerable financial resources over recent decades in restructuring the dairy milk sector in Algeria with an objective of reducing the country’s dependency on milk imports. This work aims to draw up an inventory of the status of the dairy sector in Algeria on the basis of data collected from published literature while identifying the reasons that slowed down the development of national production. The imports of milks and derivatives estimated at US$1.40 billion in 2018 are ranked in second place after cereals and account for 16.37% of the total import bill for food products (US$8.57 billion). This worrying situation is all the more constraining in a context of economic crisis induced by the downfall of the country’s incomes, due to an almost exclusive dependence on hydrocarbon exports, whose prices have decreased significantly in the last few years. At present, the State’s measures undertaken to promote the various stakeholders of the dairy sector to increase milk production unfortunately remain limited in scope. Further actions will have to be implemented to get this strategic sector back on course.
Characterization of newly developed pepper cultivars (Capsicum chinense) ‘Dieta0011-0301’, ‘Dieta0011-0602’, ‘Dieta0041-0401’, and ‘Dieta0041-0601’ containing high capsinoid concentrations and a strong fruity aroma
Authors: Seki Tetsuya , Ota Masafumi , Hirano Hiroto , Nakagawa Kiyotaka
Published: May 2020

Capsaicinoids are responsible for the pungent flavor of peppers (Capsicum sp.). The cultivar CH-19 Sweet is a non-pungent pepper mutant that biosynthesizes the low-pungent capsaicinoid analogs, capsinoids. Capsinoids possess important pharmaceutical properties. However, capsinoid concentrations are very low in CH-19 Sweet, and Capsicum cultivars with high content capsinoids are desirable for industrial applications of capsinoids.

Habanero, Bhut Jolokia, and Infinity are species of Capsicum chinense, and have strong pungency and intense fruity flavors. In the present study, we report new cultivars with high concentrations of capsinoids (more than ten-fold higher than in CH-19 Sweet), and showed that these cultivars (Dieta0011-0301 and Dieta0011-0602 from Bhut Jolokia, Dieta0041-0401 and Dieta0041-0601 from Infinity) are of nutritional and medicinal value and have fruity aromas. We also obtained a vanilla bean flavor, vanillyl alcohol, and vanillyl ethyl ether from capsinoids in the fruit of these cultivars following the addition of ethanol at room temperature.

Abbreviations

p-AMT: putative aminotransferase; C. annuum: Capsicum annuum; C. chinense: Capsicum chinense; dCAPS: derived Cleaved Amplified Polymorphic Sequences.
Enhanced sugar chain detection by oriented immobilization of Fc-fused lectins
Authors: Iijima Masumi , Yamada Yuki , Nakayama Tsutomu , Kuroda Shun'ichi
Published: May 2020

We report a novel scaffold for clustering and oriented immobilization of human IgG1 Fc-fused lectins on biosensors without chemical modifications. This approach uses a bio-nanocapsule (BNC) displaying a tandem form of IgG Fc-binding Z domains derived from Staphylococcus aureus protein A (ZZ-BNC). Incorporating ZZ-BNC effectively increased both the sensitivity and sugar chain-binding capacity compared with the condition without ZZ-BNC.
The physics of a small-scale tearing mode in collisionless slab plasmas
Authors: Geng Chen , Dickinson David , Wilson Howard
Published: May 2020

Microtearing modes have been widely reported as a tearing parity electron temperature gradient driven plasma instability, which leads to fine scale tearing of the magnetic flux surfaces thereby resulting in reconnection of magnetic field lines and formation of magnetic islands. In slab geometry it has previously been shown that the drive mechanism requires a finite collision frequency. However, we find in linear gyrokinetic simulations that a collisionless fine-scale tearing parity instability exists even at low and zero collision frequency. Detailed studies reveal that these slab modes are also driven by electron temperature gradient but are sensitive to electron finite Larmor radius effects, and have a radial wavenumber much smaller than the binormal wavenumber, which is comparable to the ion Larmor radius. Furthermore, they exist even in the electrostatic limit and electromagnetic effects actually have a stabilising influence on this collisionless tearing mode. An analytic model shows that this collisionless small scale tearing mode is consistent with a tearing parity slab electron temperature gradient (ETG) mode, which can be more unstable than the twisting parity ETG mode that is often studied. This small-scale tearing parity mode can lead to magnetic islands, which, in turn, can influence turbulent transport in magnetised plasmas.
AC loss and contact resistance in REBCO CORC®, Roebel, and stacked tape cables
Authors: Yagotintsev K , Anvar V A , Gao P , Dhalle M J , Haugan T J , Van Der Laan D C , Weiss J D , Hossain M S A , Nijhuis A
Published: May 2020

Many high-temperature superconductor (HTS) applications require superconducting cables with high currents while operating in an alternating magnetic field. HTS cables should be composed of numerous superconducting tapes to achieve the required current capacity. Alternating current and magnetic fields cause AC losses in such cables and can provoke conductor instability. AC losses and contact resistances were measured of several cable designs based on commercially available REBCO tapes at the University of Twente. The AC loss was measured under identical conditions for eight REBCO conductors manufactured according to three types of cabling methods—CORC® (Conductor on Round Core), Roebel, and stacked tape, including a full-size REBCO CICC (cable in conduit conductor). The measurements were done at T = 4.2 K without transport current in a sinusoidal AC magnetic field of 0.4 T amplitude and frequencies from 5 to 55 mHz. The AC loss was measured simultaneously by calibrated gas flow calorimeter utilizing the helium boil-off method and by the magnetization method using pick-up coils. Also, the AC loss of two CORC® conductors and a Roebel cable was measured at 77 K. Each conductor was measured with and without background field of 1 T. The measured AC coupling loss in the CORC® and Roebel conductors is negligible at 4.2 K for the applied conditions while at 77 K coupling loss was observed for all conductors. The absence of coupling loss at 4.2 K can be explained by shielding of the conductor interior; this is confirmed with measurement and calculation of the penetration field of CORC® and Roebel cables. The inter-tape contact resistance was measured for CORC® and stacked tape samples at 4.2 and 77 K. It was demonstrated that a short heat treatment of CORC® conductor with solder-coated tapes activates tape-to-tape soldering and decreases the contact resistance. The reduction of contact resistance by two orders in magnitude to tens of nΩm is comparable with the interstrand contact resistance in ITER Nb3Sn type conductors.
Hexagonal Snakes With Alpha Labeling Along A Path
Authors: Lalitha P , Tamilselvi L
Published: May 2020

The graceful labeling of a graph G with p vertices and q edges is an injection f: V (G) to {0, 1, 2… q} such that, when each edge uv is assigned the label |f (u)-f (v)|. The resulting edge set are {1, 2, 3 …q}. When graceful Labeling is applied to a graph it is known as a Gracful graph. In this paper, we introduce the graph HSn by arranging a series of Hexagons glued to each other by attaching the any one vertex of the first hexagon to the next one and the second hexagon to the third one and so on which is called a Hexagonal Snake. Thus, ‘n’ number of of hexagonal snakes are fixed along a path. We have applied graceful labeling to this Hexagonal Snake graph and have shown that it satisfies α-labeling.
Electronic structure calculations of some Cr based spintronic half Heusler alloys
Authors: Meena D K , Arora G
Published: May 2020

Several XYZ materials with X and Y as 3d and 4d transition metal elements offer half-metallic magnetic properties. In such half-metallic materials there is a band gap at the Fermi energy for the minority spin channel, but not for the majority spin channel. In this work, we present the energy bands and density of states of half-Heusler alloys namely, KCrZ (where Z=S, Se and Te) using first principles full potential linearized augmented plane wave method by applying PBEsol approach of generalised gradient approximation. It is seen that these compounds show half-metallic character with large magnetic moment of about 5.0 μB Density of states and energy bands are analysed to discuss about the origin of large values of spin moment in such compounds.
Theoretical analysis of Sn-doped ZnS for optoelectronic applications
Authors: Gaur A , Khan K , Soni A , Dashora A , Sahariya J , Ahuja U
Published: May 2020

The wide band gap semiconductors like ZnS have gained tremendous response in the optoelectronic applications claiming their significant role in device operability at varied compositions and temperature. We have performed a detailed study of pure and Sn doped ZnS using Perdew-Burkhe-Ernzerhof (PBE) exchange correlation as embodied in Wien2k code. The doping of 6.25% Sn at Zn site, in ZnS has reduced the band gap (Eg) to 1.70 eV from 2.15 eV (Eg for bulk ZnS) thus making it more suitable for the applications of solar cell. Various properties such as band structure, density of states and integrated absorption coefficient depicting their electronic and optical nature are examined. The spectra of absorption curve states the possibility of material to be solar if it lies in the visible spectra range of 0-5 eV.
Structural and Optical Study of Oxygen Irradiated Rare Earth Doped Nickel Ferrite
Authors: Dhyani Reena , Joshi Lekha , Rawat Pankaj Singh , Dixit Gagan , Srivastava R.C. , Asokan K.
Published: May 2020

In present work, NiFe2O4 nanoparticles doped with 4% Ce ions were synthesized by chemical route using nitrates of iron, nickel and cerium with citric acid. Irradiation with swift heavy ions can modify the properties of ferrites significantly. Modification depends upon type of ion, energy and fluence used for irradiation. Presently NiCe0.04Fe1.96O4 sample was irradiated with 100 MeV O7+ beam at fluencies of 1×1012 ions/cm2, 5×1012 ions/cm2, 1×1013 ions/cm2 and 2×1013 ions/cm2. All samples (pristine and irradiated) were characterized by XRD, FTIR, Raman and UV-Vis spectroscopy. XRD patterns and FTIR spectra confirmed the spinel structure of sample. XRD parameters like crystallite size, lattice parameter, strain etc. were calculated, which show significant change only at the fluence of 5×1012 ions/cm2. UV-Vis spectra show two direct band gaps corresponding to low and high spin in all samples. Band gap was found to be higher for sample irradiated at 2×1013 ions/cm2 fluence in comparison to pristine sample. It is found that irradiation with 100 MeV oxygen affect the structural parameters in random way while optical band gap shows increasing trend with fluence.
A simulator for assembly practices of robotic entities based on plug and play building blocks
Authors: Portilla-Meneses L A , Puerto-Cuadros E G , Vera-Rivera F H
Published: May 2020

This paper describes a simulator of physical robotic entities. A robotic entity simulator includes new functionalities in the simulation: flexibility by allowing the creation of many types of robots such as arms, legs and hands. Multiplatform and multi-user by allowing multiple users to enter from multiple systems. Scalability to be developed as a web application being this type of technology which is currently at the forefront and therefore the possibility of developing new modules and continuous improvements. Three test cases were developed including the design of a hand, leg and a model to represent movement through servos in a real model of a planar type pantograph robot. This simulator can be used as a pedagogical and innovative strategy for training and learning in the field of robotics. Useful for teaching and laboratory practices of research in artificial intelligence and related in an individual, group and online way.
How do software architects perceive technical debt in Colombian industry? An analysis of technical debt causes
Authors: Pérez B , Correal D , Vera-Rivera F H
Published: May 2020

Technical debt is a metaphor used to describe technical decisions that can give the company a benefit in the short term but possibly hurting the overall quality of the software in the long term. Architectural decisions are considered one of the most common sources of technical debt, therefore, it becomes relevant to understand what causes lead to technical debt from the point of view of software architects. To accomplish this task, we used a survey research method to collect and analyze a corpus of 28 software architects from Colombia, as a part of the InsighTD project. Results showed that inappropriate planning is the most cited technical debt cause by software architects. However, results differ when comparison against engineers and manager are performed. Innacurate time estimate and producing more without quality were the most selected causes of technical debt according to engineers and managers. To improve this comparison, the rank-biased overlapping technique was used. As more elements were compared, more similar were these lists of causes among all three roles.
A systematic review of the literature on information technology outsourcing services
Authors: Sanguino Reyes M R
Published: May 2020

Services outsourcing information technology is a strategy he has adopted today for information technology governance. The decision to opt for this strategy be take in order to maximize the benefits to the organization in terms of efficiency, profitability, sustained reductions in costs and utilization of available resources. But nevertheless, these decisions have not always been successful, as the process to achieve successful results, it is lacking in most of the time of formality and methodology to guide activities to be undertaken by both the customer and the supplier. This document aims to make a brief review of the literature in the area of information technology outsourcing, specifically in aspects such as models, methodologies and their governance. Analysis of the information collected allowed evidence that although there are models and good practices information technology outsourcing, none of them covers the activities necessary for the client and the provider, in defining specific roles, tasks for each of the phases of the process, useful deliverables for each, or a measurement system that has tools to evaluate it.
Technological advances in computer science that define maintenance concerns in industry 4.0 in Colombia
Authors: Dueñas Ramírez L M , Villegas López G A
Published: May 2020

Maintenance during industrial development has evolved and adapted to each challenge presented. The progress and development of computer science have opted for the massive use of information and communication technologies that arise in industrial processes generating new possibilities in maintenance management and operation. In Colombia, public and private organizations have carried out exhaustive studies on the use and maturation of technology in different industrial sectors. These studies provide valuable information on the technological progress of the country and the gaps that exist to achieve a competitive country globally. These data were analyzed and purchased with the relevance that maintenance has in Colombian industries and with current maintenance management techniques focused on improving decision making within organizations. This research establishes, within a timeline, the concerns that in the short, medium and long term should meet the maintenance in the so-called industry 4.0 in Colombia contributing to the country’s industry in improving one of its nerve processes to have companies sustainable and competitive.
Teaching based on models and transformations under the active learning approach
Authors: Álvarez Reyes L P , Cuesta Quintero B
Published: May 2020

Requirements engineering is a fundamental part of the software development cycle and, therefore, must be present in the curricula of systems engineering programs. In this document, a set of training situations based on active learning principles is presented to facilitate the teaching of requirements engineering. In the application of the methodology, the subjects of the software engineering line of the systems engineering program of the “Universidad Francisco de Paula Santander, Ocaña, Colombia” were used, guiding the process for teaching requirements engineering in agile environments with a view from the model driven engineering and its implementation in a virtual environment as a complement to the face-to-face classes. The strategy allowed participants to be organized in teams to improve requirements engineering learning. An activity guide based on scenarios with real problems was used, which allowed to strengthen the relationship between theory and practice of the subject to generate models and transform them into the search for solutions to problem domain under study.
Progress in the evolution of the use and management of data in Colombia
Authors: Guerrero-Bayona A M , Rosado-Gómez A A
Published: May 2020

The current society seeks in technology the solution to reduce the time and effort required to carry out any transaction with another person or organization, more and more platforms and resources that allow the capture, transmission, storage and processing of information generated by the systems. The electronic government is responsible for regulating the management of communications, data and services that must be offered to citizens by public entities, with the aim of maintaining an agile and online interaction. This research makes a review of the literature on how the definition, use, and objectives of electronic government have been approached, focusing on the relationships that constitutes it and establishing an evolution of the concept in the last six years. Among the results it is necessary to build a consensus in its definition, additionally, the remains that are available for its implementation, the way of structuring, managing and evaluating it are mentioned.
Importance of computer science in the results of the evaluation of higher education in Colombia
Authors: Rodriguez A M , Quintero B T , Moreno J A
Published: May 2020

Information and communication technologies have transformed social behavior into teaching and learning processes, however, it is debated whether greater access to technology influences the quality of knowledge acquired by undergraduate students. This article aims to determine the incidence of information technology and communication tools in the results obtained in the Saber Pro 2017-2018 tests by administration and related students; these tests are the exams that the Colombian state performs annually to determine the quality of higher education in public and private universities. The achievement of this objective was carried out through an analysis of variance that consists in evaluating if there are significant differences in the results, according to the students who have a computer, have access to the Internet and the time in hours dedicated to this. The analysis of variance left as the main conclusion that the use of Information and Communication Technologies increases the chances of improving the results obtained by students.
Change-point analysis of the demand for medicines
Authors: Valderrama Balaguera J C , Castro Silva H F , Velásquez Pérez T
Published: May 2020

During the last years, the model of change points has been widely used to predict data series and it can be demonstrated success cases of its application in diverse areas. However, the usefulness of the theory of the points of change for the prognosis of the demand for medicines has not been proven. In this research with a quantitative approach, the use of the theory of points of change in prognosis of the demand for medicines in Healthcare Providers in Colombia is analyzed. The forecasts obtained with the theory of change point are compared with the forecasts obtained with traditional method of Holt-Winters. As a result of this study, the “best” model is identified and recommendations for the implementation of the proposed model are presented. This study is useful for administrators of entities providing health services interested in optimizing budget allocation and improving the inventory planning strategy. The results presented in this article, will allow to incorporate the results of the methodology in the field of modeling of systems of inventories of medicines.
Diagnostic tools for measuring the manufacture of Colombian traditional emerging products
Authors: Valdés-Solano D M , Fonseca-Herreño L C , Alba-Maldonado J M
Published: May 2020

Anise-based drink, “Bolegancho”, production represents an economic source of livelihood for families; however, its artisanal production does not comply with environmental regulations. A multidisciplinary analysis at the social, geographical, and environmental levels of “Bolegancho” production is carried out. In the first part, surveys were applied to producers, determining that they are in a socioeconomic stratum 1 and 2, where the majority are dedicated to production in their homes and not to distribution. Subsequently, the production areas were geo-referenced for the collection of water and soil samples. For the environmental component, physicochemical and microbiological tests were carried out on the “Bolegancho” and the water used to produce it, identifying the lack of sanitation and the effects on the final product; on the other hand, the results that are poured into the soil according to the analyses may be beneficial for crops due to their organic matter content. Regarding the air, microbiological tests determined the presence of different types of bacteria and fungi causing alterations in the environment, which implies that the distillation processes of the “Bolegancho” should be studied from a multidisciplinary perspective.
On r-Dynamic Coloring of Neighborhood Corona of Path with Some graphs
Authors: Aparna V. , Mohanapriya N.
Published: May 2020

Consider the simple, finite, connected and undirected graph H = (V, E) in which V and E denotes the vertex set and edge set of the graph H. The r-dynamic coloring of a graph H is the proper p-coloring of the vertices of the graph H in which |c(N(a)| ≥ min{r, d(a)}, for each

a
∈
V
(
H
)

. The lowest p which allows H an r-dynamic coloring with p colors is called the r-dynamic chromatic number of the graph H and it is denoted as X
r (H). Let H
1 and H
2 be two graphs with vertex disjoint sets of n
1 and n
2vertices. The neighborhood corona of two graphs H
1 and H
2 is obtained by taking one copy of the graph H
1 and n
1 copies of the graph H
2 and by joining each neighbor of the ith
vertex of H
1 to each and every vertex of the ith
copy of H
2. It is denoted as

H
1

⋄

H
2

. In this paper, we determine the r-dynamic chromatic number of the neighborhood corona of path graph Pm
with path Pn
, complete graph Kn
, cycle Cn
and star graph K1,n
. These graphs are denoted as

P
m

⋄

P
n

,

P
m

⋄

K
n

,

P
m

⋄

C
n

and

P
m

⋄

K

1
,
n

respectively.
r-Dynamic Coloring on Snark Families
Authors: Gomathi C.S. , Mohanapriya N. , Dafik D.
Published: May 2020

An r-dynamic coloring of a graph is a proper minimum coloring of the vertices such that

|

c
(
N
(
υ
)
)

|

≥
min
{
r
,
d
e

g
G

(
υ
)
}

, for each

υ
∈
V
(
G
)

and it is denoted by

χ
r

(
G
)

. Snark are bridgeless cubic connected graph in which every vertex has three neighbors. In this paper, we shown the r-dynamic coloring for Celmins-swart snark, Double star snark, Loupekine snark, Szekeres snark, Watkins snark and infinite family of flower snark with its special case as Tietze’s graph. This result reinforce that most of the snark are 6-colorable for its maximum degree and also we give the procedures to construct a r-dynamic coloring of each snark.
Existence of Oscillatory Solutions of Linear First order Neutral Delay Difference Equations
Authors: Jesinthaangel R. , Gomathi Jawahar G. , Daphy Louis Lovenia J.
Published: May 2020

This paper is concerned with the oscillatory behaviour of first order neutral delay difference equation of the form,

Δ

[

w
(
e
)
−
p
(
e
)
w
(
e
−
α
)

]

−
q
(
e
)
w
(
e
−
η
)
=
0
,
α
,
η
>
0

and p(e), q(e) are sequence of non-negative real numbers. Sufficient conditions involving oscillation of all solutions are established. These conditions improve all previous well known results in the literature. Examples illustrating the significance of the results.
a–Domination of Cartesian Product of Path Semigraphs
Authors: Murugesan N. , Narmatha D.
Published: May 2020

In a scientific enquiry it is common to study the behaviour of combined systems after studying the systems individually. The graphical structures are combined in many ways. The Cartesian product is one of the way of combining graphs to get more general structures from the simple structures. In this paper, we study a–domination number of the Cartesian product of some simple path semigraphs.
Root Open and Root Closed Multisets
Authors: Mahalakshmi P.M. , Thangavelu P.
Published: May 2020

The root open msets and root closed msets associated with an mset topology are introduced and their basic properties are discussed.
Application of modified temperature-moisture relationships in the calculations of drying kinetics
Authors: Pakhomov A , Gatapova N , Kudra T
Published: May 2020

The paper presents a description of the modified temperature-moisture relationships, selected on the basis of the analysis of the kinetics of drying of liquid dispersed products on substrates and the methods of engineering calculation of the kinetics of drying with their application. Classification of the types of kinetic curves characterizing the change in the type of thermogram, such as a change in the angle of inclination, deformation and degeneration of the wet-bulb thermometer and boiling plateaux, allows obtaining a modified type of temperature-moisture relationships for their use in calculations of the drying kinetics. The choice of the type of temperature-moisture relationship is carried out on the basis of the solution developed by the authors of the forecast model of the kinetic curve type. The engineering method for calculating the kinetics of drying liquid dispersed products on substrates is based on solving the basic equation of drying kinetics, choosing the type of temperature-moisture relationship, calculating the coordinates of the reference points of temperature-moisture relationship, determined on the basis of the drying mode and the properties of the dried material.
Computational fluid dynamics modeling in a fixed adsorbent layer during separation of gas mixtures
Authors: Akulinin E I , Golubyatnikov O O , Dvoretsky D S , Dvoretsky S I
Published: May 2020

The paper discusses the numerical analysis results of the aerodynamic structure of a flow in the granular adsorbent layer in a pressure swing adsorption unit adsorber during atmospheric air separation and oxygen concentration. The computational experiments were carried out using one-dimensional and two-dimensional mathematical models to calculate the velocity field in the adsorbent bulk layer. While assessing the accuracy of calculating the aerodynamic structure of the gas flow in the adsorbent, it was found that the use of a two-dimensional mathematical model provides an increase in the accuracy of calculations by an average of ~1-2% compared with the one-dimensional model.
Nondestructive method of thermophysical properties monitoring and its implementing system using microwave heating
Authors: Mordasov S , Udalova A , Chernyshov V
Published: May 2020

An adaptive microprocessor information-measuring system is proposed, in which a new method of determining thermophysical characteristics (heat conductivity and temperature conductivity) of construction materials is implemented by measuring the temperature of two points on the surface of a sample exposed to pulse thermal impact from the microwave radiation of the given power focused into a line. If the steady state excess temperature at the checkpoint is equal to the set value, the repetition rate and the number of pulses are adaptively set by the system. Experimental verification confirmed the operability of the system implementing the proposed method as well as the correctness of the theoretical conclusions underlying the method.
Building of the dynamic models of visualization of the methodology for assessment of the level of students’ competencies creation
Authors: Gushchina O M , Anikina O V
Published: May 2020

One of the important task of the education system is to ensure the high quality training of students with a competency-based approach. The authors offered a scenario of the visual assessment technique of the level of students’ competencies creation with the usage of software tools, which together with innovative diagnostic algorithm allow to provide the analysis of educational data, see the results of the educational program learning and draw the conclusion about the level of students’ created competencies. The software tools are based on the ranking of components “knowledge – efficiencies – skills”, that is used for solving the problem of assessment of the levels of students’ competencies creation by the method of hierarchical system of fuzzy inference and centre-of-influence method. Statistical processing of the educational outcome is built in the developed program scenario that allow to provide a comprehensive visual presentation on analyzed sample of input data. Data display using the proposed data and obtained graphs allows to define vulnerabilities of the training of the students and the capacity to deal with them. On the use of developed scenario it is possible to observe the dynamics of students’ competencies creation and to improve the methodology and technology of educational process.
Automated processing of unmanned aerial vehicles images based on conceptual modeling of objective tasks
Authors: Vasendina I , Shoshina K , Guriev A , Aleshko R
Published: May 2020

In this article, the authors proposed a methodology for processing images of unmanned aerial vehicles, based on the conceptual modeling of objective tasks, which allows to increase the accuracy of decoding of forest resources due to the unified description of the conceptual model of the process. The approach is based on a hierarchical structural representation of the process of decrypting the image. The result of the application of the method is the determination of individual contours of tree crowns. The developed method involves the use of the watershed many times for each contour, which made it possible to determine the contours of each tree and at the same time not to miss trees with small crowns. Using the error matrix and the formula for calculating the Kappa Cohen index, the reliability of thematic decryption was evaluated. The developed methodology allowed to improve the identification of objects by 18.6%.
Equations of working lines in packed columns with regard to longitudinal diffusion
Authors: Golovanchikov A B , Zalipaeva O A , Prokhorenko N A , Shibitova N V , Merentsov N A
Published: May 2020

The analysis of differential equations of material balance with mass transfer taking into account longitudinal diffusion on both phases in a packed absorber and a distillation column is carried out. It is proposed according to the known algorithms for the calculation of absorption processes to calculate the working lines separately for two cases: 1) solid phase moves in the mode with longitudinal diffusion and dispersion in the ideal displacement mode; 2) continuous phase moves in the ideal displacement mode and dispersion mode with longitudinal diffusion, and then by summing the ordinates of the resulting working lines, to its overall significance to him and the equilibrium line on a standard methodology to calculate the height and diameter of the column.
Virtual reconstruction of Vernadskiy’s family estate in the village of Vernadovka in Pichaievskiy district of the Tambov region
Authors: Nemtinov V , Gorelov A , Borisenko A , Trufilkin S , Nemtinova Y
Published: May 2020

In this article, we consider the technology of creating a virtual space of memorable places associated with famous personalities who lived or worked there. It includes: analysis of various information sources and databases about the places of residence of famous people and their activities during their stay; creation of preliminary drawings and cartographic images of the territory; development of photorealistic three-dimensional models. Creating a virtual space in the form of a Virtual Museum is carried out using an open source software platform OpenSimulator, which is a server platform for 3D virtual worlds. In this study, we have made a virtual reconstruction of V I Vernadskiy’s family estate in the village of Vernadovka in Pitchaevskiy district of Tambov region related to objects, public and professional activities of an outstanding Russian scientist V I Vernadskiy.
Modeling of enzymatic waste water treatment
Authors: Novikov A , Lamskova M , Dugin E , Filimonov M , Grigorov S , Poddubskiy A , Chamurliev G
Published: May 2020

Processing and recycling of waste water is an important environmental problem. One possible and promising way to use the generated sludge is production biofertilizers for agriculture. However, in view of the risks of chemical and bacteriological contamination, it is necessary to develop technologies that ensure a high level of conditioning and stabilization of sludge. Maximum enzyme activity is observed in a microbubble medium under the conditions of a mesophilic process. To accelerate the biochemical transformation of pollutants, an enzyme-cavitation method has been developed, based on the stimulation of growth processes of microorganisms in bioreactors by low and high intensity cavitation created by turbojets. It has been established that the quality and duration of sludge treatment depends on the pressure of the substrate at the entrance to the oxidizing jets. It has been proven that at a pressure p = 0.30-0.35 MPa, the processing time of the sludge before stabilization of the chemical oxygen consumption at 16% is 8 hours. Microscopic studies found that the processed substrate is an accumulation of microorganisms with a total surface of up to 100 m2 per 1 gram of dry matter that provides high sorption properties with respect to moisture.
Petri transport networks
Authors: Sedykh I , Demakhin D
Published: May 2020

This paper presents a new class of Petri nets - Petri transport networks, used to simulate the transport’s systems. This class can be attributed to hierarchical temporal colored probabilistic Petri nets. The paper gives a definition, basic concepts, structure and functioning rules of Petri transport networks. The relevance of the topic raised in the article is due to increasing attention to the development of transport systems, their evolution and modernization. Modern management methods, various mechanisms for regulating traffic flows, infrastructural extensions, all this does not meet the challenges posed by modern transport infrastructure. Moreover, the problem is increasing every year. Petri transport networks introduced in the work, are a convenient tool ohms to simulate the transport’s systems of any complexity and scale. A new class of Petri transport networks is characterized by a hierarchical structure, in which the first level displays the entire system as a whole, the second - the internal structure of each object. Distinctive features are also the adjustment of the activation of traffic flows by means of a control marker, inter-level synchronization, separation of positions and transitions to types having different functions.
Teacher and students response to learning devices based on van hiele theory
Authors: Wiska S , Musdi E , Yerizon Y
Published: May 2020

Critical thinking is one of the higher order thinking ability that needs to be developed in the 21st century. In fact, that the students’ critical thinking ability are still low. In learning geometry students are still dependent on the teacher in receiving information, the media are inadequate in learning geometry so that students have not been trained to solve geometry problems with critical thinking. Thus a geometrical learning devices was made based on the van hiele theory. Before using the geometry learning devices, it is validated first with the experts, asking the teacher’s response, and student responses through questionnaires and interviews. The subjects of this study were class VIII students of SMP 13 Padang. The results showed that the response of teachers and students showed the geometry learning devices is practical criteria.
The Validity of realistic mathematics education based mathematics learning materials for vocational high school students
Authors: Noperta N , Armiati A , Permana D , Yerizon Y
Published: May 2020

The validity of learning materials made by the teachers is untested, so it is not valid yet to use in supporting the improvement of students’ mathematical communication skills. This research is a part of RME based research on Mathematics learning materials development to improve mathematical communication skills for Grade X SMK students on construction and property engineering programme. This research is aimed to assess validities of learning materials through two phases. First, self-evaluation was conducted by involving a peer. The results showed that Mathematics learning materials could be extended to the expert review phase with minor revision. Second, expert review, the researcher asked five experts to assess its validity. Thus, the results show Mathematics learning materials have been valid.
An initial observation of learning devices development based on discovery learning to increase students’ creativity
Authors: Rafida L L , Permana D
Published: May 2020

Creativity is a combination of logical and divergent thinking that is used to bring up a new idea. The type of research was a descriptive research by using qualitative approach. An initial observation of learning devices development based on discovery learning aims to (1) to know an initial conditions of mathematical planning and learning that are developed by the teacher (2) to know and review how creativity of senior high school students in mathematics learning (3) whether it is necessary to continue research development based on discovery learning to improve creativity of senior high school students. The results of preliminary observations indicate that: (a) mathematics planning and learning that are developed by teachers is still general. (b) So that the creativity of high school students in mathematics learning is still low. (c) Based on this, follow-up action is needed in the form of research on development based on discovery learning to increase creativity of senior high school students (SMA N 5 Padang on 2018/2019).
Development of realistic mathematics education based learning device to improve students’ mathematical connection
Authors: Elpina D , Syarifuddin H , Yerizon Y
Published: May 2020

Mathematics is not directly given to the students in the form of formulation, however students have to construct the knowledge by themselves through contextual problem interactively, both in formal and informal, so that students can discover the truth of the concept by themselves. One of the important components in mathematics learning is mathematical connection; however, students’ ability of mathematical connection is far from the expectation. Therefore, the development of learning device with an approach and strategy to allow mathematics as the activity of the students is of vital importance. The designed learning device by using RME approach and by adding strategy of relating, experiencing, applying, cooperating, and transferring (REACT) based on constructivism which places the students as the center of the learning. The purpose of this research is to develop RME based learning device which is valid, practical and effective to improve students’ mathematical connection of class IX Junior High School (SMP). This is a development research model by employing Plomp model which consists of three phases, namely, preliminary research phase, development and prototyping phase, and assessment phase. Preliminary research reveals that students are less interesting to learn mathematics since they have only few chances to find concept through relevant practice with their individual experience and that are suitable with students’ cognitive level.
Improving Students’ Problem-Solving Ability through Learning Tools Based on Problem Based Learning
Authors: Permatasari C P , Yerizon Y , Arnawa I M , Musdi E
Published: May 2020

Our preliminary research conducted on students grade VII of junior high school showed that the students’ mathematical problem-solving ability was still low. We suspected that learning tools used so far have not been able to facilitate students to develop mathematical problem-solving abilities. The low ability to solve mathematical problems of students can be overcome by developing learning tools based on Problem Based Learning. The purpose of this study was to analyse the results of the development of learning tools based on Problem Based Learning to improve the mathematical problem-solving ability of students in grade VII. This type of research is development research where the subjects were students grade VII of junior high school. We used the Plomp model which consists of three stages; investigation, development or prototype, and the assessment. The instruments used to find out the practicality of the learning tools developed were interview guidelines, student questionnaire responses, teacher questionnaire responses, and observation sheets for the implementation of lesson plans. The results showed that our newly developed learning tools have been practical for use in the learning process.
Analysis of The Curriculum Expertise Program Art in The Development of The Learning Based on Realistic Mathematics Education Approach
Authors: Aini Yn K , Armiati A , Permana D
Published: May 2020

The study aim to analyze the curriculum to see and find out the linkages between Basic Competence mathematics and Basic Competence productive subjects in the art expertise program. This research was part of Plomp’s model development research. Curriculum analysis is carried out to obtain information in developing mathematics learning devices in the form of Learning Implementation Plans and Student Worksheets based on the Realistic Mathematics Education (RME) approach. From the results of curriculum analysis that has been done, it was obtained data that not all Mathematical Basic Competencies have anything to do with productive subjects in the fine arts expertise program. From a number of mathematics material in grade one 1st semester, there are four materials that have relevance to the context studied in students’ productive subjects, including the absolute value of one variable, the system of three-variable linear equations, functions, and the composition of functions. This means that the context studied in productive subjects can be used as an initial problem in the process of learning mathematics in the material
Analysis of Early Mathematical Problem-Solving Ability in Mathematics Learning for Junior High School Student
Authors: Yuristia N , Musdi E
Published: May 2020

Problem solving ability is one of the mathematical abilities that is very important so that students are able to apply the concepts they have learned. The purpose of this study was to analyze the initial ability of mathematical problem solving in mathematics learning of eighth grade students of junior high school. this is seen from the indicators as follows; 1) Identifying the elements that are known, asked, and the adequacy of the elements needed, 2) Formulating problems or compiling mathematical models, 3) Implementing strategies to solve various problems inside or outside mathematics, and 4) Summing up the results. The instrument used in this study was a preliminary test of students’ mathematical problem-solving abilities with questions as many as 3 items and a research sample of 32 people in the first school and 30 people in the second school. Assessment of students’ mathematical problem solving ability tests is based on a scoring rubric of mathematical problem solving abilities. Based on the results of this study, the percentage of students’ mathematical problem solving abilities was 18.95% and 14.57. The results of this study indicate the low ability of students to solve mathematical problems and the need for further action to improve them.
Development of Mathematics Learning Tools Based on Coaching Technique to Create Accelerated Learning Revolution
Authors: Tanjung S P , Permana D
Published: May 2020

One of the efforts to create Accelerated learning revolution of XXI century is the importance of innovation in mathematics learning by developing learning device based on Coaching Technique. The learning devices are in the form of lesson plan (LP) and student worksheet (SW) designed as the substitute coach for both teacher and student, hence the purpose and the target of learning can be achieved. Coaching provides steps that are systematic, practical, and in line with the learning purpose. Coaching technique can be implemented in the classroom by providing opportunity for teacher to conduct improvisation in teaching, to facilitate teacher to uncover students characteristics, as to provide opportunity for students to develop their own learning style based on their individual ability. The development model employed in this research is plomp model. This model consist of three phases, first, preliminary research, second development or prototyping phase and third assessment phase.
The Effect of Realistic Mathematics Education Approach Oriented Higher Order Thinking Skills to Achievements’ Calculus
Authors: Arnellis A , Fauzan A , Arnawa I M , Yerizon Y
Published: May 2020

The goal of this research is to determine the influence of the realistics mathematics education (RME) approach by oriented higher order thinking skills (HOTS) on the results of students’ mathematics learning on the subject of the calculus in SMAN 10 and SMAN 12 Padang. The method used is the experimental research with pre and post-test design randomized control group. The data analysis technique used is the test for normality and homogeneity test followed by using a t-test. The results revealed that there were an increase in student mathematic learning outcomes approach realistic mathematics education oriented higher order thinking skills in class XI MIPA SMAN 10 and SMAN 12 Padang. There is impact-oriented approach to realistics mathematics education approach by oriented higher order thinking skills to understanding student learning in class XI SMAN 10 and 12 MIPA Padang.