bluuebunny/crossref_metadata_2025_split huggingface dataset:
DIAGNOSIS KESULITAN BELAJAR MATEMATIKA MATERI RELASI DAN FUNGSI PADA SISWA MTS KELAS VIII
Authors: Anggreni Dewi 
Published: June 2022

Abstrak
Penelitian ini di latarbelakangi dari hasil pengalaman dan pengamatan peneliti selama pelaksanaan PPL di MTS DDI Bilajeng, bahwa peneliti melihat terdapat beberapa siswa yang mengalami kesulitan dalam belajar matematika. Dalam pelaksanaan PPL ini mahasiswa PPL melakukan proses belajar mengajar selama empat kali pertemuan dan satu kali evaluasi dengan menggunakan instrumen lembar tes tertulis. Permasalahan yang timbul dalam penelitian ini adalah 1). Faktor apa saja yang menyebabkan siswa mengalami kesulitan dalam belajar matematika materi Relasi dan Fungsi di MTS DDI Bilajeng; 2). Jenis kesulitan seperti apa yang dialami oleh siswa dalam belajar matematika pada materi Relasi dan Fungsi di MTS DDI Bilajeng. Adapun kesimpulan dari hasil penelitian ini adalah 1). Faktor-faktor yang menyebabkan siswa kesulitan dalam belajar matematika khususnya pada materi Relasi dan Fungsi yaitu diantaranya adalah faktor dari kepribadian siswa itu sendiri, faktor kurangnya minat belajar siswa terhadap matematika karena menganggap bahwa matematika itu sangat sukar untuk dipahami dan penuh dengan hitung-hitungan. Serta kurangnya pengetahuan prasyarat yang dimiliki oleh siswa; 2). Jenis kesulitan yang dialami oleh siswa adalah kesulitan memahami soal, kesulitan penggunaan konsep dan prinsip, serta kesulitan melakukan aspek komputasi.
Katakunci: Diagnosis, Kesulitan Belajar, Relasi dan Fungsi
Abstract
This research was based on the results of the experiences and observations of researchers during the implementation of PPL at MTS DDI Bilajeng, that the researchers saw that there were some students who had difficulty learning mathematics. In implementing PPL, PPL students carry out the teaching and learning process for four meetings and one evaluation using a written test sheet instrument. The problems that arise in this research are 1). What are the factors that cause students to experience difficulties in learning mathematics with regard to the subject matter of Relations and Functions in MTS DDI Bilajeng; 2). What kinds of difficulties do students experience in learning mathematics in the material Relations and Functions in MTS DDI Bilajeng. The conclusions from the results of this study are 1). The factors that cause students difficulties in learning mathematics, especially in relation to the material of relations and functions, include factors from the student's own personality, the factor of the lack of student interest in mathematics because they think that mathematics is very difficult to understand and is full of calculations. As well as the lack of prerequisite knowledge possessed by students; 2). The types of difficulties experienced by students are difficulty understanding questions, difficulties in using concepts and principles, and difficulties in carrying out aspects of computation.
Keywords: Diagnosis, Learning Difficulties, Relationships and Functions
ANALISIS KEMAMPUAN KONSEPTUAL PESERTA DIDIK DALAM MENYELESAIKAN SOAL NILAI MUTLAK BERDASARKAN TEORI APOS
Authors: - Tita Tengku Malinda , Wiwin Sri Hidayati  
Published: June 2022

Penelitian ini bertujuan untuk mendeskripsikan kemampuan konseptual peserta didik dalam menyelesaiakan soal nilai mutlak berdasarkan Teori APOS (Aksi, Proses, Objek, Skema). Subjek penelitian ini adalah peserta didik kelas X SMAN Ploso tahun ajaran 2019/2020 yang diambil berdasarkan tingkat kemampuan matematika tinggi, sedang, dan rendah. Penelitian ini merupakan penelitian kualitatif deskriptif. Metode pengumpulan data pada penelitian ini menggunakan metode tes dan wawancara. Teknik pengumpulan data pada penelitian ini menggunakan tes tertulis dan wawancara. Pengecekan keabsahan data pada penelitian ini menggunakan triangulasi waktu. Hasil penelitian ini yaitu (1) peserta didik berkemampuan matematika tinggi telah membentuk aksi, proses, objek dan skema pada setiap jenis kemampuan konseptual, (2) peserta didik berkemampuan matematika sedang membentuk aksi, proses, objek dan skema pada kemampuan klasifikasi dan kategori, serta kemampuan prinsip dan generalisasi, membentuk aksi, proses, dan objek pada kemampuan teori, model, dan struktur, (3) peserta didik berkemampuan matematika rendah membentuk aksi pada setiap jenis kemampuan konseptual.
The research aims to describe students conceptual abilities in solving absolute value question based on APOS Theory (Action, Process, Object, Schema). The subject of this research were student of class X SMAN Ploso for the academic year 2019/2020 which were taken based on high, medium, and law levels of mathematics abilities. This research is a descriptive qualitative research. Data collection methods this research uses the methods of test and interview. Technique data collection this research using written test and interview. Checking the validity data this research using triangulation time. The result of this research indicate that (1) student with high mathematics ability have formed action, process, object, and scheme for each types conceptual abilities, (2) student with medium mathematics ability is forming action, process, object, and scheme on the ability of classification and categories, the ability of principles and generalizations, forming action, process, and object on the ability of the theory, models, and structures, (3) student with law mathematics ability formed action for each types conceptual abilities.
BANGUN DATAR: ANALISIS PEMAHAMAN KONSEP SISWA SMP MELALUI SCHOOLOGY
Authors: Rahmawati Tika , Murniasih Tatik Retno , Yuwono Timbul 
Published: June 2022

Pemahaman konsep adalah suatu kecakapan dalam mengerti suatu hal secara mendalam tentang suatu rancangan dengan benar. Pemahaman konsep berdasarkan Skemp dibagi dua yaitu instrumental dan relasional. Siswa yang hafal rumus saja dinamakan pemahaman instrumental. Siswa mempunyai kemampuan menjelaskan prosedur penyelesaian dan mengaitkan konsep dinamakan pemahaman relasional. Schoology merupakan software berbasis web untuk pembelajaran dimana siswa bisa berinteraksi dengan guru. Penelitian bertujuan untuk menganalisis pemahaman konsep matematika yang pada salah satu SMP kelas 7 di kota Malang. Subjek penelitian enam belas siswa kelas VII. Instrumen penelitian yang digunakan yaitu tes pada aplikasi schoology untuk materi segiempat dan segitiga. Analisis data deskriptif kualitatif dan kuantitatif digunakan dalam penelitian. Siswa dikelompokkan menjadi 5 kelompok berdasarkan indikator Skemp, selanjutnya dianalisis pemahaman konsepnya. Hasil dari penelitian didapatkan bahwa siswa yang menguasai pemahaman konsep matematika tingkat instrumental yaitu dengan menghafalkan rumus sebesar 52 %, sedangkan untuk tingkat relasional yang mampu menggunakan prosedur hanya 48 %.
ANALISIS PEMAHAMAN KONSEP MATEMATIKA ANAK BERKEBUTUHAN KHUSUS TIPE LEARNING DISABILITIES PADA TOPIK GEOMETRI
Authors: Aini Nurul 
Published: June 2022

Anak berkebutuhan khusus (ABK) memilki kesempatan yang sama dalam mendapatkan pendidikan. Salah satu tipe ABK adalah Learning disabilities. Seorang anak Learning disabilities memiliki kesulitan dalam cmembaca, menulis dan matematika. Oleh sebab itu, Peneliti ingin menganalisis pemahaman konsep matematika ABK tipe learning disabilities pada topik geometri. Dimana geometri merupakan bagian matematika. Jenis penelitian ini adalah kualitatif. Subjek penelitian diambil dari SMP Swadaya Kesamben Jombang, siswa ABK yang ada di sekolah tersebut berjumlah satu orang. Instrumen utama adalah peneliti dan instrumen pendukung dalam penelitian ini ada 2 yaitu lembar tes pemahaman konsep matematika dan pedoman wawancara. Teknik pengumpulan data menggunakan tes dan wawancara. Berdasarkan analisis yang telah dilakukan, pemahaman konsep matematika siswa ABK learning disabilities tidak memenuhi semua indikator. Indikator yang muncul hanya empat indikator yaitu Interpreting, Exemplifying, Classifying, dan Summarizing. Hal ini dikarenakan lebih mudah dikaitkan dengan objek visual. Dibandingkan dengan indikator inferring, comparing dan explaining yang membutuhkan pemikiran lebih komplek dan membutuhkan keterampilan membaca dan menulis. Hal ini membuktikan bahwa siswa ABK learning disabilities membutuhkan objek visual atau alat peraga dalam membantu memahami suatu materi
PRODUKSI BENIH PADI HIBRIDA: KEMAJUAN, TANTANGAN, DAN PELUANG PENGEMBANGAN DI INDONESIA / Hybrid Rice Seed Production: Progress, Constraints, and Development Opportunities in Indonesia
Authors: Widyastuti Yuni , Prabowo R. Noviadi , Wibowo Bayu P. , Kartina Nita , Rumanti Indrastuti A. , Agustiani Nurwulan , Mulsanti Indria W. 
Published: June 2022

<p>Hybrid seed production is the important key in the commercialization and development of hybrid rice. The successful of hybrid rice development through the exploitation of heterosis phenomenon in China encouraged other countries including Indonesia to develop hybrid rice. Research conducted at Indonesian Center for Rice Research (ICRR) indicated that the development of hybrid rice technology offered opportunities for increasing rice yields by 15-20% compared to inbred varieties. The high cost of hybrid seed is one of the constraints in the adoption of hybrid rice technology. This is primarily attributed to the low hybrid seed yield which is around 1-1.5 t/ha. This article introduces the results of research and development especially in hybrid rice seed production based on genetic of parental lines of hybrid and its field management. The constraints and opportunities of hybrid seed industry in Indonesia also discussed in this article.</p><p>Keywords: Hybrid rice, seed production, progress, constraint, opportunity.</p><p> </p><p><strong>Abstrak</strong></p><p>Produksi benih merupakan kunci penting dalam keberhasilan komersialisasi dan pengembangan padi hibrida. Keberhasilan Cina mengembangkan padi hibrida dengan memanfaatkan fenomena vigor hibrida (heterosis) telah mendorong negara lain termasuk Indonesia untuk mengembangkannya. Hasil Penelitian di Balai Besar Penelitian Tanaman Padi (BB Padi) menunjukkan penggunaan teknologi padi hibrida memberikan peluang peningkatan hasil 15-20% dibandingkan dengan varietas inbrida. Harga benih yang tinggi menjadi salah satu tantangan dalam adopsi padi hibrida. Hal ini disebabkan oleh produksi benih F1 yang hanya berkisar 1-1,5 t/ha. Artikel ini memaparkan hasil penelitian produksi benih padi hibrida, terutama berdasarkan genetik galur tetua hibrida dan teknis budidaya. Kendala dan peluang industri benih padi hibrida, strategi pengembangan produksi benih dan pembangunan industri benih padi hibrida di Indonesia juga merupakan bagian dari diskusi penting dalam artikel ini.</p><p>Kata kunci: Padi hibrida, produksi benih, kemajuan, tantangan, pengembangan</p>
RAYAP PADA TANAMAN PERKEBUNAN SERTA TEKNIK PENGELOLAANNYA / Termites on Plantation Crop And Its Management Technique
Authors: Puspitasari Mahardika , Susilawati Susilawati , Mubin Nadzirum 
Published: June 2022

<p> </p><p align="center">ABSTRAK</p><p>Kopi, karet, dan kakao merupakan komoditas penting perkebunan di Indonesia. Dalam budidayanya, rayap merupakan salah satu hama penting yang menjadi kendala pada tanaman perkebunan dan dapat merugikan secara ekonomis Tulisan ini mengulas rayap sebagai hama pada tanaman kopi, karet, dan kakao, serta perkembangan pengendalian dan strategi pengelolaannya. Beberapa pendukung keberadaan rayap pada suatu areal perkebunan adalah cukup tersedianya bahan pada media tanam dan di sekitar tanaman. Gejala kerusakan yang disebabkan oleh rayap berupa gerekan pada batang dapat menyebabkan terganggunya tanaman yang berdampak pada terhambatnya pertumbuhan dan bahkan kematian tanaman. Pada perbenihan, serangan rayap sering menyebabkan kematian bibit. Teknik pengelolaan penting dalam pengendalian rayap secara kultur teknis adalah dengan menggunakan media pembibitan yang rendah bahan dan melakukan sanitasi lahan. Selain itu, penggunaan pestisida kimiawi ternyata masih menjadi andalan saat ini, sehingga dapat mencegah investasi rayap pada wilayah perkebunan dan dapat menekan tingkat kerusakan sebesar 70-100%. Namun, demikian untuk pengelolaan hama mendukung pertanian modern berkelanjutan, pengendalian rayap yang ramah lingkungan dengan basis pengendalian hayati dan nabati, yang saat ini telah banyak didukung hasil penelitian yang memadai, perlu dikembangkan dan diimplementasikan secara nyata dengan dukungan seluruh pihak.</p><p align="center">ABSTRACT</p><p><em>Coffee, rubber, and cocoa are leading plantation commodities in Indonesia. In its cultivation, termites are one of the important pests that are a constraint on plantation crops and can be economically detrimental. One factor that supports the termites' activity in a plantation area is the availability of organic material. Symptoms of damage caused by termites are brittle stems that disrupt plants which cause stunted growth and even death of plants. The damage becomes serious in the stage of seedlings. Low organic matter media usage and field sanitation can reduce the termites' population. In addition, chemical pesticides are still a mainstay currently, so they can prevent termite investment in plantation areas and reduce damage levels by 70-100%. However, for pest management to support sustainable modern agriculture, environmentally friendly termite control based on biological and botanical control, which is completed by adequate research, needs to be developed and implemented in real terms with the support of all stakeholders.</em><em></em></p>
BIOLOGICAL AGENTS AND THEIR ROLE TO INCREASE PLANT ESSENTIAL OIL UNDER WATER STRESS Agen Hayati dan Peranannya dalam Meningkatkan Minyak Atsiri Tanaman pada Kondisi Cekaman Air
Authors: Kurniawan Agus Prayitno , Aini Nurul Aini , Maghfoer Moch Dawam , Yamika Wiwin Sumiya Dwi , Kusuma Restu Rizkyta 
Published: June 2022

<p>Essential oils are plant natural products resulting from secondary metabolites used for raw materials of various industries such as perfumery, preservative, cosmetics, and pesticide. The major problem of essential oil plants cultivation is the low essential oil content. Enhancing essential oil content is one of the main focuses in developing essential oil plants which can be reached by water management. Growth and yield reduction and changes in some physiological reactions are the responses of a plant toward water supply shortage (water stress). Water stress triggers elicitors and some signal molecules produced for secondary metabolites resulting in higher essential oil percentages. However, it would also decrease essential oil yield following lower biomass production. Some microorganisms can produce phytohormone and enhance nutrient uptake allowing the plant to cope under water stress condition. Understanding how the environment affected plant secondary metabolite (especially essential oil), as well as microorganism roles for crop production, will provide proper cultivation technology to increase plant essential oil content and oil yield. This review aimed to analyze the potential use of some biological agents to alleviate the negative effect of water stress on essential oil plants.</p><p align="center">ABSTRAK</p><p>Minyak atsiri merupakan produk alami tanaman dari hasil metabolisme sekunder yang digunakan sebagai bahan baku berbagai industri seperti parfum, antiseptik, kosmetik, dan pestisida. Budidaya tanaman minyak atsiri menghadapi kendala seperti rendahnya kandungan minyak yang dihasilkan. Pertumbuhan dan penurunan hasil serta perubahan pada beberapa reaksi fisiologis merupakan respon tanaman terhadap cekaman air. Cekaman air memicu produksi elisitor dan beberapa molekul sinyal pada metabolit sekunder sehingga dapat menghasilkan minyak atsiri yang lebih tinggi, akan tetapi tidak diikuti dengan peningkatan produksi biomassa sehingga produksi minyak atsiri tidak cukup tinggi. Beberapa mikroorganisme mampu menghasilkan fitohormon dan meningkatkan serapan hara yang memungkinkan tanaman dapat bertahan pada kondisi cekaman air. Pemahaman bagaimana lingkungan dapat mempengaruhi metabolit sekunder dari tanaman (khususnya minyak atsiri), serta peran mikroorganisme terhadap produksi tanaman, akan menghasilkan teknologi budidaya yang sesuai untuk meningkatkan kandungan dan hasil minyak atsiri suatu tanaman. Review ini bertujuan menganalisa potensi penggunaan beberapa jenis agens hayati untuk mengurangi dampak negatif dari cekaman air pada tanaman penghasil minyak atsiri.</p>
Extraction of high inverted mesiodens via the labial, palatal and subperiostal intranasal approach：A clinical prospective study
Authors: Li Huifei , Cheng Yongfeng , Lu Jun , Zhang Pengfei , Ning Yi , Xue Lei , Zhang Yuan , Wang Jie , Hao Yujia , Wang Xing 
Published: June 2022

Abstract
Background As the potential risks of the development of the adjacent incisors and jaws, mesiodens, especially inverted mesiodens, should be prophylactically extracted in mixed or early permanent dentition. However, because of the limit of small clinical data, there is relatively inadequate and lacks systematic, comprehensive understanding on minimizing operation injury for high inverted mesiodens. The aim of this study is to provide reliable support for the choice of extraction of high inverted mesiodens, and minimize the operation injury for patients.Methods Thirty patients were randomly divided into three groups according to three different surgical designs in the extraction of high inverted mesiodens. The operation statistics, life quality of postoperative patients, and the operative injury/recovery were compared and analyzed. The laser Doppler blood flowmetry, laser speckle contrast imaging, and electric pulp testing were explored to detect the postoperative pulp and gingiva blood supply of adjacent teeth.Results For the clinician's primary concerns, the surgical time, the volume of osteotomy, and the amount of bleeding in the labial approach group and intranasal approach group were significantly less than that in the palatal approach group (p<0.05). However, from the patient's perspective, the postoperative swelling and pain in the labial approach were far more than that in the intranasal approach group (p<0.05), with unsurprisingly lower satisfaction (p<0.05). Under excellent surgical operation，there were no significant differences in pulp and gingival blood supply of adjacent teeth and jaw development (p>0.05).Trauma was manageable in all patients.Conclusions With precisive operation, maxillary inverted impacted mesiodens could be extracted by three methods, and the controlled trauma would not affect the development of teeth and jaw. Under the inclusion and exclusion criteria of this study, the extraction of mesiodens by the intranasal approach achieved a delicate balance between reducing surgical trauma and optimizing postoperative recovery, which was of concern and merited further study.Trial registration The study was approved by the Ethics Committee of Shanxi Medical University School and Hospital of Stomatology (2019SLL022), and retrospectively registered at chictr.org.cn (ChiCTR2100054777). All patients provide written informed consent before participating in treatment.
Clothing attribute recognition algorithm based on improved YOLOv4-Tiny
Authors: Gu Meihua , Liu Jie , Hua Wei 
Published: June 2022

Abstract
Aiming at the problem of low accuracy of clothing attribute recognition caused by factors such as scale, occlusion and beyond the boundary, a novel clothing attribute recognition algorithm based on improved YOLOv4-Tiny is proposed in this paper. YOLOv4-Tiny is used as the basic model, firstly, the multi-scale feature extraction module Res2Net is adopted to optimize the backbone network, the receptive field size of each layer of the network is increased, and more abundant fine-grained multi-scale clothing feature information is extracted. Then, the three feature layers of the output of feature extraction network are up-sampled, and the high-level semantic features and shallow features are fused to obtain rich shallow fine-grained feature information. Finally, K-Means clustering algorithm is employed to optimize the anchor box parameters to obtain the anchor box that is more compatible with the clothing object, and to improve the integrating degree between the clothing attribute characteristics and the network. The experimental results show that the proposed method can significantly improve the accuracy of clothing attribute recognition for different scale proportions, occlusion degrees and out-of-bounds degrees, and its mean average prediction(mAP) is improved by 6.75% compared with the original model.
No, an oral presentation is not just something you prepare at home! Elementary teachers’ practices supporting preparation of oral presentations
Authors: Stordeur Marie-France , Nils Frédéric , Colognesi Stéphane 
Published: June 2022

In elementary school, oral presentations are among teachers’ favorite activities. From the pupil’s perspective, this activity can have a major impact, as the skills it calls for will prove useful later throughout his/her career and life. While instruction for the presentation generally happens in class, the same is not true for the preparatory work, which is mostly carried out at home with or without parental support, thus creating inequalities between students (Sénéchal, 2017). However, teacher support is essential to help elementary school students prepare their oral presentation.
Our research question is: what kinds of support do teachers offer to students to help them prepare oral presentations? To answer this question, we interviewed 16 teachers from the French-speaking part of Belgium who ask their students to make oral presentations and who say they offer support before the presentation. Their declared practices show a wide variety of types of accompanying support. The practical implications of our study relate to progressive teaching of a complex task, rebalance between time devoted to oral and to written preparation, attention to the speaker and the audience, collection of artifacts, introduction of training modules for teachers, and best practices to be highlighted.
Control theory-based data assimilation for open channel hydraulic models: tuning PID controllers using multi-objective optimization
Authors: Milašinović Miloš , Prodanović Dušan , Stanić Miloš , Zindović Budo , Stojanović Boban , Milivojević Nikola 
Published: June 2022

Abstract
Reliable water resources management requires decision support tools to successfully forecast hydraulic data (stage and flow hydrographs). Even though data-driven methods are nowadays trendy to apply, they still fail to provide reliable forecasts during extreme periods due to a lack of training data. Therefore, model-driven forecasting is still needed. However, the model-driven forecasting approach is affected by numerous uncertainties in initial and boundary conditions. To improve the real-time model's operation, it can be regularly updated using measured data in the data assimilation (DA) procedure. Widely used DA techniques are computationally expensive, which reduce their real-time applications. Previous research shows that tailor-made, time-efficient DA methods based on the control theory could be used instead. This paper presents further insights into the control theory-based DA for 1D hydraulic models. This method uses Proportional–Integrative–Derivative (PID) controllers to assimilate computed water levels and observed data. This paper describes the two-stage PID controllers’ tuning procedure. Multi-objective optimization by Nondominated Sorting Genetic Algorithm II (NSGA-II) was used to determine optimal parameters for PID controllers. The proposed tuning procedure is tested on a hydraulic model used as a decision support tool for the transboundary Iron Gate 1 hydropower system on the Danube River, showing that the average discrepancy between modeled and observed water levels can be less than 0.05 m for more than 97% of assimilation window.