bluuebunny/crossref_metadata_2025_split huggingface dataset:
Animated media design based on visual basic application microsoft powerpoint on the material build flat side spaces
Authors: Rohaeti E E , Putra H D , Purwandari A S 
Published: October 2020

Abstract
Students still have difficulty in understanding the material to build flat side spaces, so it needs innovative learning designs as a solution. One of the innovative learning designs is animation media based on microsoft powerpoint basic visual application. This research method is research and development through the stages of determining the potential and problems, data collection, animation media design, animation media initial design, animation media design validation, animation media trial, animation media revision, and final animation media. The research subjects were students of one class in one of the junior high schools in Cimahi. The research instrument used validation sheets and student response sheets. Validation was carried out by 3 experts namely a mathematics education lecturer who understood the visual basic application and 2 mathematics teachers who were experienced teaching. The results of expert validation from a lecturer on animation media obtained good criteria on the effectiveness indicators of the use of animated media, language, sound, and visuals, while on the consistency indicators the use of symbols obtained very good criteria. Validation of two mathematics teachers to the presentation of material in the overall animation media obtained criteria both on the indicators of relevance of learning objectives, the truth of the concept, and the presentation of the material. Student responses to the use, appearance, and presentation of animation media material as a whole are in good criteria.
Commognitive analysis of the solving problem of logarithm on mathematics prospective teachers
Authors: Halim D , Nurhidayati S , Zayyadi M , Lanya H , Hasanah S I 
Published: October 2020

Abstract
This study aims to describe the commognitive analysis of the solving problem of logarithm on college students of Mathematics. This type of research is a qualitative description. The research subjects were three college students of Mathematics Education from Universitas Madura. The instruments used in this study were mathematical problem sheets and semi-structured interviews. The results of this study show that college students have many differences in working or mistake in mathematics problem-solving. In the word use or use precise words to inform the comprehension, the students have differences in writing base, degree of the numeral, or other symbols. In the visual mediators or use of precise object or media, the students have differences in the premise of working logarithm. In the narratives, students have differences in solving the problem systematically based on comprehension of logarithm form. In the routines, students have differences in understanding the basic concept of logarithmic characteristics.
Introducing statistical inference to senior high school students: a textbook analysis
Authors: Setiawan E P 
Published: October 2020

AbstractStatistical inference is a new concept for students in senior high (secondary) school in the 2013 curriculum. This study analyses how Indonesian mathematics textbooks for the 12th-grade senior high school present this concept. The method used here is content analysis, i.e., examine five books written by different authors and publishers. We find that almost all textbooks start with the explanation of random variables, followed by the binomial distribution, the normal distribution, and hypothesis testing. However, there are some differences in the depth of the materials among these textbooks. Although those textbooks explain the hypothesis testing, almost all books do not explain the sampling distribution, which is the foundation of inference. This study can be used as a guide to strengthening the explanation of statistical inference in mathematics textbooks as well as in developing statistical inference teaching strategy.
A measurement model of technological pedagogical content knowledge (TPACK) in Indonesian senior mathematics teachers’ scenario
Authors: Yanuarto W N , Maat S M , Husnin H 
Published: October 2020

AbstractThe TPACK is one of the primary knowledge for teachers understanding technology in the era of the industrial revolution 4.0. In education, teaching technology in the classroom can apply by looking at the TPACK stages teachers have. Teachers who have high stages in TPACK will facilitate their steps and movements in exploring technology in the classroom. This study aims to validate the TPACK measurement model, which consists of 30 items. A quantitative method of the cross-sectional survey is applied in this study. We used the questionnaire for gaining the data. TPACK instruments were distributed to 235 respondents. The analysis of this TPACK measurement model testing uses exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). All constructs revealed acceptable internal consistency reliability. A good model fit found for measurement models of TPACK using several fit index tests like CMINDF, GFI, CFI, TLI, and RMSEA. The findings showed that all fit indices criteria were fulfilled. It is concluded that the TPACK measurement model pictures the TPACK level of the senior mathematics teachers in the Indonesian scenario.
Mathematics critical and creative thinking skill of student to solve Numerical Methods problems based on strength typology
Authors: Happy N , Endahwuri D , Chakim M M L 
Published: October 2020

Abstract
Talent is a special or more dominant potential or ability possessed by someone who can develop through an intensive training or education process. Strength Typology 30 (ST30) views talent as the role of individuals who have eight clusters, namely: Servicing, Thinking, Reasoning, Elementary, Networking, Generating Idea, Technical, and Headman. This research aims to describe how mathematical creative and critical thinking abilities of students who have dominant talent in cluster thinking, reasoning, and generating ideas. The instrument used in this research was a talent assessment (ST-30) through temubakat.com and a mathematical critical and creative thinking skill test on Numerical Method problems. In this research, one research subject was chosen who has dominant talent in the 3 clusters. The dominant talents of subject CLC in the cluster of thinking, reasoning, and generating ideas are Analyst, Strategic, Creator, and Synthesizer. The results showed that CLC subjects had good mathematical critical, and creative thinking skills. He can conduct all aspects of critical thinking skills (focus, reason, inference, situation, clarity, overview) and aspects of creative thinking ability (fluency, flexibility, originality) in solving Numerical Method problems.
Mathematics learning of trigonometric triangles in vocational high school using online media
Authors: Asfyra I B , Zulkardi Z , Putri R I I , Hartono Y 
Published: October 2020

Abstract
This research is a descriptive qualitative study that aims to describe the learning of trigonometric triangles using online media in class X students of SMK Negeri 6 Palembang. Information assortment methods use screen recordings of Zoom application, observation, and interviews. Screen recordings are carried out to observe student activities during the learning process and compare them with observation sheets and interview sheets. Meanwhile, the test instrument is utilized as supporting information to see understudy learning results after learning the wide trigonometric triangle in general. The outcomes indicated that during the learning process that lasted for two meetings, students could follow well throughout all stages of learning and get outstanding outcomes.
The 3P model with lesson study for learning community (LSLC) in the professional development of mathematics teachers on three-dimensional shape material
Authors: Rusiyanti R H , Zulkardi Z , Putri R I I 
Published: October 2020

Abstract
There have been many government policies to improve the quality of teachers. However, the results of the 2017 Teacher Competency Test (UKG) show that the national average professional ability is at 55.91 and the national average pedagogic ability is at 50.71. This shows that all these scores are below the minimum standard, namely 70. In the process of learning Mathematics in schools, the quality of teachers must be continuously fostered. Therefore, this study aims to develop the professionalism of high school mathematics teachers, through the 3P Model (Training, Guidance and Assessment) with the Lesson Study For Learning Community (LSLC) system. This study involved 25 teachers from four high schools in Palembang City. This research uses two types of design research, namely development studies and validation studies. The result of this research is a learning environment using the 3P model (Training, Assistance, and Assessment) with the LSLC system. So that with the 3P model and the LSLC system can be a bridge that connects teachers by focusing on learning strategies in improving professional and pedagogical mathematics teachers comprehensively. These results show a significant increase in the professional development of mathematics teachers in the city of Palembang.
Mathematical critical thinking ability and students’ confidence in mathematical literacy
Authors: Pratama M A 
Published: October 2020

AbstractThe progress of learning in the current era emphasizes students to have critical thinking skills, be able to implement real-world knowledge, master information technology, communicate and collaborate. One of the skills needed to achieve this goal is mathematical literacy. Therefore, it takes cognitive and affective abilities that are able to develop mathematical literacy skills, namely mathematical critical thinking ability and self-confidence. Students with good mathematical literacy skills will easily solve problems that occur in everyday life. This article examines some of the literature on mathematical critical thinking, self-confidence, and its connection to mathematical literacy.
Developing mathematics module of Kapita Selekta course based on higher-order thinking skills for high school
Authors: Karimah S , Hidayah N , Utami U 
Published: October 2020

Abstract
Higher-order thinking skills can be seen through Bloom’s taxonomic cognitive level. The cognitive level in Bloom’s taxonomy includes analysis, evaluation, and create. In the Kapita Selekta Pendidikan Matematika 2 course that deals with high school mathematics material, pre-service teachers are expected to be able to master higher-order thinking skills. With the HOTS-based mathematics module for high school it can help the pre-service teacher in compiling questions. The results of the research development of HOTS-based mathematics problem modules are included in the valid category. It means that students of Mathematics Education at Universitas Pekalongan in the subject of Kapita Selekta Pendidikan Matematika 2 can use HOTS-based mathematics modules.
The use of mobile learning at SMP Negeri 3 Karawang Barat in improving students’ mathematical representation ability
Authors: Hakim D L , Herman T , Kartasasmita B G 
Published: October 2020

Abstract
The mathematical representation ability is a mathematically visual image either in a person’s image, symbol, or expression, which is a mental picture of himself in learning mathematics. Many concepts of abstract mathematics lessons sometimes make students do not understand what they are learning, therefore the ability of mathematical representation is needed when students learn math. In growing the ability of mathematical representation, it is necessary an appropriate learning so that students can visualize it, namely using mobile learning. Mobile learning is a teaching learning activity that utilizes information and communication technology that refers to mobile handheld devices through mobile devices such as mobile phones, smartphones, tablets, personal digital assistance (PDAs), notebooks and netbooks, with availability teaching materials that can be accessed at any time as well as interesting and interactive material visualization in it. The results show that students using mobile learning achievement of representational ability is better than students who use conventional learning.
Application of Field-Map technology for vegetation assessment in Saint Petersburg
Authors: Antonov O I , Izotova T V , Djikovich Yu V , Shepeleva O P , Chasovskaya V V 
Published: October 2020

Abstract
Annotation. This paper discusses the use of Field-Map technology. It has been established that the use of Field-Map technology requires significant changes in the structure of work: first of all, it is necessary to change the structure and content of such documents as the object’s passport, registry of green spaces, etc. Inventory of objects using the Field-Map technology will expand the number of indicators in the passport objects and registers of green spaces, which will affect the cadastral valuation and damage assessment from the demolition of vegetation.
Soil formation features of Andoma geological section
Authors: Bogdanova L S , Shepeleva O P , Hrustalev R A , Yakovlev A A , Sergeeva A S 
Published: October 2020

Abstract
Andoma geological section is a unique natural monument. A feature of this territory is colors diversity of parent rocks, granulometric composition and agrochemical characteristics. The soil landscape of Andoma section is not well developed due to strong erosion processes. Soil formation is at the initial stages in some areas so that Andoma geological section is an excellent scope. The study of this research will allow a better understanding of the differences in the soil formation process on different mother rocks.
The effect of meteorological factors on the annual increment of spruce (Picea abies (L.) Karst.) growing on double layer soils
Authors: Chudakov A V , Danilov D A , Zaytsev D A , Belyaeva N V 
Published: October 2020

Abstract
The present work analyzes the effect of temperature and precipitation in the growing season on annual increment and structural elements of spruce xylem. The objects of study were stands aged 100-120 years with different spruce proportion, restricted to soils of binary genesis that allowed levelling out the conditions of growth and determining the main meteorological parameters influencing the increment of spruce wood. The study revealed that, depending on the stand composition, the average temperatures during the growing season have change the effect on the annual increment of spruce wood. In the given soil conditions, the highest meteorological sensitivity in spruce was recorded when its share in the stands was less than 60%. With a decrease in the spruce share in the stand composition, the influence of meteorological factors on macrostructural elements also decreases, but if broad-leaf species are present in the stand, there is an increasing in the influence of weather factors on the increment of wood and its structural elements.
The structure of stands and renewal of the Shorea formation in evergreen forest of Binh Chau –Phuoc Buu Nature Reserve, Vietnam
Authors: Danilov D A , Thi Duong Nguyen , Belyaeva N V 
Published: October 2020

Abstract
This work analyzes the quality of the restored forests with the prevalence of the Dipterocarpaceae family tree species in Binh Chau – Phuoc Buu Nature Reserve, Vietnam. To predict the number of plants in each diameter class, we verified the correspondence of theoretical distributions with an empirical distribution N - D. A theoretical model is best described by an exponential distribution. To establish natural regeneration, we determined the structure of renewed tree species and their relative thickness. The similarity between the composition of renewed plants and the composition of parent plants was determined by the Sorensen coefficient. A natural regeneration of 14 plant species is observed under the canopy of the Shorea formation. The similarity coefficient between the composition of the maternal stratum and renewed plants is 20.3%. This indicates that generations of renewed plants can alter the composition of maternal plants in the upper stratum. The analysis of the distribution structure of diameters and the similarity coefficient between the composition of the maternal tree and the renewed trees showed that the Shorea formation in the Reserve is in the process of succession to achieve a higher hierarchy of environmental stability, i.e., the climax stage.
Analysis of post-fire effects in pine stands in various landscape conditions of the boreal zone
Authors: Danilov D A , Gusev D V , Belyaeva N V 
Published: October 2020

Abstract
The study analyzes the pyrogenic effect on the condition of pine trees in two landscapes of the Leningrad region. The polynomial regression method in the description of the process tree attrition depending on the scorch height on the trunk allowed determining the trend of the thinning process for pine trees in different vitality conditions. The post-fire attrition of trees follows different scenarios in the studied landscapes of the Luga Upland and Putilov Plateau. The correlation analysis showed that the inverse relationship between the thickness of the remaining forest ground cover and the scorch height on trunks, i.e., the intensity of the past fire, is stronger in the landscape of the Putilov Plateau than in the Luga landscape. The studied landscapes created a different environment for the emergence and spread of fires of both natural and anthropogenic origin.
Technological aspects of the development of the automated method of air-photo interpretation of forest stands
Authors: Vagizov M R , Istomin E P , Dobrovolskyi A A , Zhernova A P , Yagotintceva N V 
Published: October 2020

Abstract
The article focused on one of the possible methods for the development of an automated method for interpretation Earth remote sensing data. As the basic elements for solving the problem, the practical experience from forest inventory training system was taken. Authors used the AutoCAD program to perform per-stem decoding. The article describes some features of modern air-photo interpretation system used in forest inventory and the possible transition from classical forest inventory to automated analysing methods.
Characteristics of the transport infrastructure of the Krasnoyarsk territory and its impact on the efficiency of the logging process
Authors: Goryaeva E , Mokhirev A , Medvedev S 
Published: October 2020

Abstract
Forest infrastructure is an important element of economic development of territories. It is impossible to maintain sustainable forest management without forest infrastructure. Forest infrastructure is the basis of the production and non-production spheres. It creates favorable conditions for work and the life of the population. Forest infrastructure has an impact on the economic development of the timber industry connected regions of Russia. In the process of logging the use of forest infrastructure facilities is necessary. At the same time, the transport infrastructure, its condition, and development have a significant impact on the logging process and its effectiveness. The nature of this dependence is of practical interest. The purpose of this research is to evaluate the development of transport infrastructure and its impact on forest harvesting volumes in the forestries of the Krasnoyarsk Territory. The results of our studies allow to make the following conclusions: the structure and density of the forest transport infrastructure of the region is uneven. Its design lacks regularity and validity. The development of transport routes is chaotic. The dependence of the performance indicators of the harvesting process on the density or length of transport routes is ambiguous and it requires further investigation.
Implementation of the Forest Plan of a constituent entity of the Russian Federation, as a key criterion for assessing the effectiveness of the execution of the powers delegated to the constituent entities of the Russian Federation in the use, conservation, protection and reproduction of forest resources
Authors: Gryaznov S E , Sukonkin S E , Orlov S V , Shaitarova O E , Kuzminyh Yu V 
Published: October 2020

Abstract
The article analyses the current methodology and rating criteria for evaluating the effectiveness of the implementation by the subjects of the RF of the delegated powers in the field of forest relations. The features and disadvantages of the current Methodology have been identified. Measures have been proposed to improve the current Methodology in the framework of the modern legislative system of forest relations in the Russian Federation. Based on the analysis of the current Methodology, we recommend to strengthen the role of indicators of the Forest Plan of constituent entities of the RF. When developing the Forest Plan of a constituent entity of the Russian Federation, the climatic and socio-economic characteristics of each specific region should be taken into account, which ensures the comparability of all constituent entities of the Russian Federation for each of the Criteria. A method of comparing the actual achievement of the criterion with its planned value, used in forest planning, makes it possible to objectively evaluate the effectiveness of the execution of delegated powers, taking into account the capabilities of a subject of the Russian Federation in question. When comparing the current and recommended methods, significant discrepancies were revealed in the results of evaluating the effectiveness of the implementation by the subjects of the Russian Federation of the delegated powers in the field of forest relations. According to the results of the rating assessment between all constituent entities of the RF, only four of the twenty constituent entities of the Russian Federation maintained their position in the group of leaders.
Alluvial soils of the Gulf of Finland. Composition, properties, and suitability for creating green spaces
Authors: Kapelkina L , Melnichuk I 
Published: October 2020

Abstract
In Saint-Petersburg and its surroundings land reclamation works by hydraulic filling have been performed for several decades. For the hydraulic filling fine-grained slightly silted and clayed sands from the bottom of the Gulf of Finland are used. We have examined the properties of alluvial soils as substrate for planting, figured out unfavorable hydrophysical features of the soils related to soil fractionation caused by water flows while hydraulic filling, which, in their turn, have negative impact on preservation and growth of vegetation. We have given examples of measures on melioration of soils, at the same time having taken into consideration their features while the design performance and working on creation green spaces on the alluvial soils.