bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Preliminary Study: Why Develop High Order Thinking Skills Worksheets Based on the 3N
Authors: Sulistyowati Fitria , Harini Esti 
Published: March 2021

This qualitative research is a preliminary study of a 4-D model development research that aims to describe the basic problems, student characteristics, the formulation of learning outcomes, and specific learning goals as the initial stage of developing a high order thinking skills (HOTS) exercise bank based on 3N in Algebra. Research subjects at the analysis stage of student characteristics are all students taking Algebra courses in Mathematics Education Department Universitas Sarjanawiyata Tamansiswa for the 2019/2020 academic year. Data were collected using a literature study, observation, documentation. The data obtained were analyzed descriptively with the following steps: (1) preparing the data, (2) data coding, (3) searching for findings, (4) constructing the framework, and interpreting the data. The results of this study are: (1) Algebra learning centered on lecturers and students has difficulty solving non-routine problems, (2) there are only 1.59% of students who implemented to check the correctness of solutions in solving HOTS problems, (3) CPMK Algebra, and (4) formulation of specific learning goals. These results are used as a reference in the design stage of exercise bank development.
Keywords: high order thinking, exercise bank, problem-solving.
Problem Based Learning On Literacy Mathematics: Experimental Study in Elementary School
Authors: Farhan Moch , Satianingsih Rarasaning , Yustitia Via 
Published: March 2021

This research is motivated by the hope of students mastering mathematical literacy skills. Mathematical literacy can facilitate a person in understanding the usefulness of mathematics and applying it in everyday life to make the right decision. But in reality, based on the results of PISA 2018, Indonesia was decreased as a result of The Mathematical Literacy Ability Test. This study aims to determine: (1) The average literacy ability of experimental class students taught through PBL is better than the control class; (2) Class 5 student activities taught using the Problem Based Learning model, (3) Teachers can carry out learning using the Problem Based Learning learning model. This research is quantitative research with observation and documentation methods. The design used is a quasi-experimental design type Post-test only. This research uses an interval scale. The population is grade 5 students of SDN Gayungan II Surabaya. Samples were taken by cluster random sampling technique so that class 5-B (control class) and 5-A (experimental class) were obtained. Data collection techniques used were test methods analyzed with SPSS 22; observation of activities and implementation with descriptive; and documentation. The results showed that: (1) The average literacy ability of the experimental class students taught through PBL was better than the control class; (2) Student activities get very active categories; (3) The implementation of learning using the PBL model gets a Good category.
Keywords: Problem Based Learning, Mathematics Literacy Ability.
Students’ Cognitive Process In Problem Solving On Pattern Materials Reviewed From Math Anxiety
Authors: Ferdiansyah Muhammad Nanang , Ekawati Rooselyna 
Published: March 2021

This study uses a qualitative descriptive approach that aims to describe the cognitive processes of students in solving problems in the number pattern material in terms of the level of students' mathematics anxiety. The instruments used in this study were the mathematics ability test (TKM) to control subject selection, the mathematics anxiety questionnaire (AKM), the problem-solving test (TPM), and the interview guidelines. From several 8th grade students, there are 21 male and 9 female students, one student was selected with a male student with high mathematical ability and high math anxiety and one male student with high mathematical ability and low math anxiety. The results showed that students with high and low math anxiety could solve problems, but there were differences in receiving, processing, storing, and recalling information. Students with low math anxiety check their answers again by processing the information in other ways, while students with high math anxiety do not. With the difference in the cognitive processes of students with math anxiety, teachers are advised to develop appropriate learning methods to reduce students' math anxiety, so that students can improve their thinking skills in mathematics at a higher level with low math anxiety.
Keywords: Cognitive, Mathematical Ability, Math Anxiety, and Problem Solving
Development of Mathematic Learning Set Based On Pedagogical Content Knowledge to Improve Mathematics Problem Solving Ability
Authors: Leksono Ibut Priono , Fitriatien Sri Rahmawati 
Published: March 2021

This research use development research wich aim to product mathematic learning that include implementation plans and woksheets based on pedagogical content knowledge in order to improve mathematical problem solving ability. The development model that used in this research uses four stages starting with define, then continue with design stage, next the develop stage, and the last stage is disseminate stage, or better known as 4D model. The mathematical problems that used in this research include linear programming problems that are solved with the integer programming method. The results of validation for the result of learning tools show that the pedagogical content knowledge with 4D method are suitable to used with very good categories. Meanwhile, the trial results show that the pedagogical content knowledge learning tools produced are practical and effective. This is able to support an achievement of research object that is able to improve the ability of students to solve math problems for linear programe case by using integer programming method.
Keywords: pedagogical content knowledge, problem solving, math problem, integer programming.
Getting Under the Skin: Antiblackness, Proximity, and Resistance in the SLĀV Affair
Authors: Howard Philip S. S. 
Published: March 2021

SLĀV is a musical stage play directed by Robert Lepage, and based on recordings by singer Béatrice “Betty” Bonifassi. The recordings are Bonifassi’s reinterpretations of music composed by enslaved and incarcerated African Americans—that is Black people labouring under, and resisting, the conditions of slavery and its afterlife. Though Lepage and Bonifassi promoted the show as an homage to Black people, SLĀV opened at the 2018 Montreal International Jazz Festival to protests by the SLĀV Resistance Collective, accusing it of cultural appropriation. SLĀV was eventually cancelled as Black artists began pulling out of the festival. Unsurprisingly, Lepage, Bonifassi and much of the Quebec public accused the protestors of censorship, and of misunderstanding Quebec’s unique context. Situating its analysis within the field of Black Canadian Studies, in this article Howard examines the discourse around SLĀV as manifested through the words of Bonifassi, Lepage, journalists, and commenters. Howard argues that SLĀV instantiates the broader context of antiblackness in Quebec, and pays particular attention to gestures of inclusion and proximity consistent with modes of slavery and its afterlife in New France/Quebec. These gestures attempt to contain Blackness within national, linguistic, and other boundaries, disciplining the ways it is allowed to assert itself. Black resistance must therefore defy these boundaries and claim solidarity between and across variously located Black people.
DISKRIMINASI YANG DIALAMI ORANG DENGAN HIV/AIDS (ODHA) DAMPINGAN YAYASAN SEHAT PANGHURIPAN SUKOWATI KABUPATEN SRAGEN
Authors: IFTINAN MAITSA DHIFA , Aritonang Admiral Nelson , Okctilia Helly 
Published: March 2021

Penelitian ini bertujuan untuk mengetahui dan memahami perihal diskriminasi yang dialami Orang dengan HIV/AIDS di Yayasan Sehat Panghuripan Sukowati Kabupaten Sragen, mencakup: 1) karakteristik informan, 2) penghinaan verbal, 3) penghindaran, 4) pengucilan, 5) kekerasan fisik dan 6) harapan informan. Metode yang digunakan dalam penelitian ini adalah deskriptif kualitatif. Informan dalam penelitian ini berjumlah lima (5) orang dengan HIV/AIDS dan dua (2) orang pengurus yayasan, dengan penentuan informan dilakukan teknik purposive sampling. Teknik pengumpulan data yang digunakan adalah wawancara mendalam (in-depth interview), observasi (observation) dan studi dokumentasi. Sumber data yang digunakan adalah sumber data primer dan sumber data sekunder.
Hasil penelitian menunjukkan bahwa penghinaan verbal diterima informan berbentuk kata-kata dan kalimat diungkapkan untuk merendahkan ODHA. Penghindaran dilakukan dengan cara menghindari atau menjauhi ODHA. Pengucilan dilakukan dengan cara mengeluarkan ODHA dari suatu kelompok dengan pemutusan hubungan sosial. Selanjutnya, kekerasan fisik dilakukan dengan cara menyakiti, memukul atau menyerang ODHA dikarenakan status HIV yang disandangnya. Permasalahan diskriminasi terhadap ODHA terjadi dikarenakan stigma terhadap penyakit HIV/AIDS dan kurangnya penerimaan masyarakat terhadap ODHA. Program yang diusulkan yaitu “Peningkatan Kepedulian Keluarga dan Masyarakat Terhadap Orang dengan HIV/AIDS (ODHA) dalam Upaya Mengurangi Diskriminasi Terhadap ODHA”.
Tangerine (<i>Citrus reticulata</i> Blanco var. <i>unshiu</i> Tan.) selection for fruit quality
Authors: Kulyan R. V. , Abil’fazova Yu. S. , Belous O. O. 
Published: March 2021

Citrus horticulture in Russia is confined to the humid subtropical conditions of the Black Sea coast of Krasnodar Region, with tangerine (Citrus reticulata Blanco var. unshiu Tan.) as a major market crop. The past decade has witnessed a steady increase in the production and consumption of fresh, easy-peeled tangerines. The bulk of existing evidence on the citrus fruit quality traits is built on research on oranges and grapefruits as main market crops, and relatively little is known on the unique qualities of tangerine. The article discusses the key quality traits of tangerine, including the fruit mass, size, colour, flavour and major biochemical quality indices. We justify the importance of breeding tangerine, specify the crop model and identify priorities, including the biochemical fruit improvement. The study involved 12 elite tangerine forms obtained by distant hybridisation at the Subtropical Research Centre of the Russian Academy of Sciences. The new promising forms received a brief pomological description and qualitative assessment. The preliminarily selected large-fruit and high-yield forms are 2-2-1, 99-2, 99-4 and 99-8. Specimen with a higher sugar content (>9 %): 99-2, 99-4, 99-8; higher ascorbate content (>75 mg/100): 97-3, 98-1, 98-2, 98-9; dry matter content: 2-2, 99-2, 99-4, 98-8, 2-1; balanced sugar-acid ratio: 2-1, 99-2, 99-4, 99-8 (sugar-acid index 9.8-10.3). The elite forms obtained by directed breeding are of equal or superior fruit quality to the zoned “Kowano-Wase” cultivar. These forms are competitive on today’s fruit market and promising for further breeding work towards improved fruit quality.
KEANEKARAGAMAN JENIS BURUNG DI TAMAN HUTAN RAYA SULTAN SYARIF HASYIM PROVINSI RIAU
Authors: Badriansyah Rohmad , Hadinoto Hadinoto , Ikhwan Muhammad 
Published: March 2021

Birds are an animal that has an important role in the process of forest succession, plays a role in spreading seeds, helping pollination, and balancing ecosystems. Deforestation of forest areas in Riau has a high rate, this can be seen from the change in the function of forests into agricultural and plantation land. The Sultan Syarif Hasyim Forest Park (TAHURA) is a conservation area that has quite alarming conditions, of the forest area of ​​6,172 hectares, there are only 2,000 hectares left forested, while the rest have acacia forest cover, shrubs, oil palm plantations, rubber plantations . The assessment of bird diversity needs to be carried out in the Sultan Syarif Hasyim Tahura given the high level of habitat destruction. Birds in TAHURA Sultan Syarif Hasyim have 71 species of birds from 34 families and 13 orders, there are 5 nocturnal birds. The diversity index (H) ranges from 3.19 - 3.92, the evenness index type (E) ranges from 0.88 - 0.92 and the species richness index (R) ranges from 2.14 - 4.28.
RENDEMEN DAN KARAKTERISTIK MINYAK KAYU PUTIH PADA UKURAN DAUN YANG BERBEDA
Authors: Nengsih Yurdia , Tri Ratnaningsih Ambar , Suhesti Eni 
Published: March 2021

This research was conducted in the presumptuous university forest faculty laboratory yellow Pekanbaru. This research was conducted for 6 months, namely from July -December 2018. This study aims to measure the yield and characteristics eucalyptus oil at various leaf sizes consisting of specific gravity, refractive index, solubility in 70% alcohol, and cineol content. Analyze effect size eucalyptus leaves to the characteristics of eucalyptus oil. This research is
using a completely randomized design (CRD). This research is used to obtain provide information and input regarding the characteristics of eucalyptus oil and yield at different leaf sizes. Results from research on oil characteristics Eucalyptus at various leaf sizes consists of, whole eucalyptus leaves obtained yield 0.59%, moisture content 1.074%, specific gravity 0.953, refractive index 1.467, solubility in 70% 1: 2 alcohol, the cineol content is 71.67%. Two cut leaves are obtained yield 0.49%, moisture content 0.842%, specific gravity 0.921, refractive index 1.465, solubility in 70% alcohol 1: 3, cineol content 63.33. Cut eucalyptus oil leaves three obtained yield 0.39, water content 0.908, specific gravity 0.924, inex bias 1.465, solubility in 70% alcohol 1: 4, cineol content 68.33%. Treatment of leaf size significant effect on yield, solubility in 70% alcohol and not significant effect on specific gravity, refractive index, and cineol content.
PERANAN POHON TERHADAP TINGKAT KENYAMANAN LINGKUNGAN KAMPUS UNIVERSITAS LANCANG KUNING PEKANBARU
Authors: Hadinoto Hadinoto , Suhesti Eni , Suwarno Eno 
Published: March 2021

Regional development has a tendency to minimize green open space and also remove the face of nature. The increasingly disharmonious relationship between humans and nature has resulted in ecological deterioration in the environment. Less land covered by trees causes the environment to become hot. The Lancang Kuning University Campus is one of the places of education in which the entire academic community, employees and other parties are located. In carrying out all campus activities, a comfortable environment is needed. The objectives are: to identify tree characteristics in the faculty environment; measuring the comfort level of the faculty environment. The objects this research are tree types. The equipment used is: thermohigro, camera, phi band, haga meter, roll meter, stationery. While the material used is thally sheet. Primary data taken in the field are tree data, temperature and humidity. The comfort index is categorized: comfortable, if it has a value of 21 THI 24; quite comfortable 24 THI 26 and not comfortable THI 26. There were 31 tree species with 472 trunks with an average diameter of 19 centimeters and an average height of 10 meters. The Temperature Humidity Index (THI) of all faculties is in the uncomfortable category.
ANALISIS VEGETASI DI TAMAN WISATA ALAM (TWA) SUNGAI DUMAI, RIAU
Authors: Ikhsani Hanifah 
Published: March 2021

TWA Sungai Dumai is a tourist forest area and ensuring the preservation of natural potential. However, there are problems that can disrupt the sustainability of it, including forest and land fires and conversion of land use to agriculture and oil palm plantations. Until now, there is no vegetation analysis using satellite imagery in TWA Sungai Dumai, so it is important to do so that can be managed sustainably. This study classification of vegetation density classes which are presented in the form of a vegetation density class map in it. This research uses Landsat-8 OLI / TIRS images from October 2017 and October 2020 which are processed to determine density class using Normalized Difference Vegetation Index algorithm. The vegetation density class with the highest area in 2017 was the vegetation density class (2380,832 ha or 66,819% of the total area), while the lowest area was the non-vegetation class (75,737 ha or 2,126% of the total area). The vegetation density class with the highest area in 2020 in TWA Sungai Dumai is dense vegetation density class (3205,039 ha or 89,950% of the total area), while the lowest area is non-vegetation class (1,637 ha or 0.046% of the total area)
Stress-strain state of a three-layer cylindrical shell under internal axisymmetric pulse load
Authors: Gaidaichuk Viktor , Kotenko Kostiantyn 
Published: March 2021

The problem of dynamic deformation of a three-layer cylindrical shell under non-stationary loads in the case of rigid clamping of the shell ends is considered. The article presents the results of assessing the stress-strain state of a three-layer cylindrical shell, taking into account its structural feature, the ratio of the sheathing thickness and the physical and mechanical characteristics of a one-piece polymer filler. Calculations were performed by software complex Nastran. The values of displacements and stresses were calculated by the algorithm of direct transient dynamic process. The step duration of the time interval was 0.0000025 s, and the total number of steps was 200. The choice of the type of three-dimensional finite element was due to obtaining more detailed and accurate calculation results. The finite element model included 19000 three-dimensional finite elements and numbered 20800 nodes.
The influence of geometrical parameters of shell layers with different physical and mechanical properties of one-piece filler on the stress-strain state under axisymmetric internal impulse load is investigated. Numerical results on the dynamics of the three-layer structure, obtained by the finite element method, allow to characterize the stress-strain state of the three-layer elastic structure of the cylindrical type at any time in the studied time interval. Optimization of the shell design is recommended. Changing the ratio of the thickness of the internal and external shells of the shell significantly affects the stress-strain state of the shell and its performance. Increasing the thickness of the internal layer of the shell significantly contributes to the increase of the latter. Comparison of the given results with materials of other similar researches and positions, testify to objectivity of the made approach.
FORTIFIKASI TEPUNG DAUN KELOR TERHADAP DAYA TERIMA DAN KANDUNGAN GIZI MI KERING BERAS HITAM
Authors: Nur Astuti 
Published: March 2021

Produk mi merupakan makanan yang praktis, mudah diolah, serta dapat dengan cepat disajikan. Jenis produk mi yang mampu bersaing dipasar ialah mie kering. Bahan baku pembuatan mi pada umumnya adalah tepung terigu yang terbuat dari gandum. Substitusi dan fortifikasi parsial dengan bahan lain adalah salah satu bentuk inovasi sebagai usaha mengurangi ketergantungan tepung terigu seperti beras hitam dan daun kelor. Penelitian ini bertujuan untuk mengetahui daya terima dan kandungan gizi mi beras hitam dengan fortifikasi tepung daun kelor. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) yang terdiri dari 4 taraf perlakuan formula fortifikasi tepung daun kelor, yaitu: F1 (0%), F2 (5%), F3 (10%), F4 (15%) yang diitambahkan dalam formula mie beras hitam. Daya terima dinilai dari uji organoleptik yang dilakukan pada panelis semi terlatih sebanyak 30 orang dan kandungan gizi dari hasil uji laboratorium menggunakan uji proximat. Berdasarkan uji organoleptik dan hasil pembobotan nilai, F2 memiliki daya terima lebih tinggi dari formula yang lain dengan skor 61,37. Formulasi yang terpilih kemudian diuji proksimat dan diperoleh kandungan protein sebanyak 18.66%, lemak 2.30%, air 8,9%, serat 7,2%, karbohidrat 82,06%.
Productive response of creole lambs fed integral diets with Samanea saman (Jacq.) Merr. pods
Authors: Herrera-Pérez Jerónimo , Carbajal-Márquez Ulises , Torres-Salado Nicolás , Sánchez-Santillán Paulino , Ramírez-Reynoso Omar , Rojas-García Adelaido R. , Ayala-Monter Marco Antonio 
Published: March 2021

Objective: To evaluate the productive variables and the digestibility of the nutrients of an integral diet for lambs with increasing inclusion of Samanea saman pods.
Design/methodology/approach: 24 creole lambs (initial weight of 20.6 ± 0.3 kg) distributed in a completely randomized experimental design were used. The treatments were: T1, 0%, T2, 12.5%, and T3, 25% of Samanea saman pod inclusion. The productive variables and the digestibility of the nutrients were evaluated and compared with the Tukey test (? = 0.05); meanwhile, the response to the increasing content of Samanea saman was evaluated by orthogonal contrasts. The variables dry matter intake (DMI), daily weight gain (DWG) and feed conversion (FC) showed no differences (p > 0.05) between treatments.
Results: Dry matter digestibility (DMD) and organic matter digestibility (OMD) increased (p <0.05) linearly, with increasing pod content. The digestibility of the neutral detergent fiber (DNDF) and acid (DADF) decreased (p < 0.05) linearly as the inclusion of Samanea saman pod increased in the diets.
Limitations on study/implications: The substitution of soybean pulp by Samanea saman pod in integral diets does not affect the productive response of fattening lambs.
Findings/conclusions: The use of S. saman pod is proposed as a regionally available food alternative in the feeding of ruminants in the tropics.
Genetic transformation of Paulownia elongata S. Y. Hu., mediated by Agrobacterium tumefaciens and biolistic system
Authors: Castillo-Martínez Carlos R. , Gutiérrez-Espinosa Ma. Alejandra , Cadena-Iñiguez Jorge , Buenrostro-Nava Marco T. , Martínez-Sias Valeria 
Published: March 2021

Objective: The most appropriate conditions for genetic transformation through direct (bioballistic) and indirect (Agrobacterium tumefaciens) transformation systems in Paulownia elongata were established.
Design/methodology/approach: Starting from in vitro propagation through both direct and indirect organogenesis, internodal stem segments with 0.5 to 1 cm length were determined as the best explant. The optimum dose for selection media was determined to be 15 mg L-1 of kanamycin. It was possible to obtain transgenic plants under both transformation systems. In the case of Agrobacterium tumefaciens, two hours of incubation, 48 h of co-cultivation, and optical density of 0.9 were used; while for bioballistics, the best conditions were 120 PSI of shot pressure, shot height at level 6 (16 cm), and vacuum pressure of 22 Hg mm, with particle inflow gun system (PIG).
Results: Both systems produced complete transformants, chimeras, as well as those confirmed by histochemical X-GLUC and PCR analysis, producing a total of 14 positive plants by A. tumefaciens transformation from 26 trials and ten positive plants by the bioballistic system from 30 trials; a construction with chitinase and glucanase, NPT II selection gene and the GUS reporter gene were used.
Findings/conclusions: So far, this has been the first report including integration of chitinase and glucanase genes.