bluuebunny/crossref_metadata_2025 huggingface dataset:
MSER-Vertical Sobel for Vehicle Logo Detection
Authors: Gamma Kosala  , Agus Harjoko  , Sri Hartati
Published: October 2023

Detecting a vehicle logo is the first step before realizing the identity of the logo. However, the detection of logos can pose difficulties due to various factors, including logo variations, differing scales and orientations, background interference, varying lighting conditions, and partial obstruction. This paper presents a vehicle logo detection method using hand-crafted features. We used a combination of Maximally Stable Extremal Region (MSER) and Vertical Sobel. We combine vertical Sobel with MSER to overcome MSER's limitation in recognizing objects of different sizes. These two features are merged using a closing morphology operation to form blobs selected as logo candidate areas. Moreover, a Support Vector Machine (SVM) is implemented to choose a logo area by analyzing each candidate's Histogram of Oriented Gradient (HOG). The proposed method was compared with other methods by implementing them on the same dataset. The significant advantage of using MSER-Vertical Sobel is its fast computation time. It is faster than other approaches that use non-handcrafted features. The test results show that the MSER-Vertical Sobel can achieve high accuracy and the fastest computation time.
Analisis Dan Pengembangan Strategi Dalam Meningkatkan Daya Saing HonestDocs Sebagai Perusahaan Startup Di Era Industry 4.0
Authors: Pramestyani Embriana Dinar
Published: October 2023

Salah satu platform e-commerce telemedicine di Indonesia yang turut andil sebagai perusahaan startup digital berbasis kesehatan adalah HonestDocs (HD). HD dikembangkan sebagai dampak dari perkembangan teknologi di era revolusi industri 4.0. Perubahan perilaku konsumen pengguna layanan kesehatan digital dan banyaknya kompetitor membuat HD harus menetapkan strategi yang lebih baik di pasar telemedicine. Penelitian ini bertujuan untuk mengetahui strategi existing yang digunakan oleh perusahaan startup HD di platform e-commerce dan menganalisis strategi yang dapat dikembangkan untuk meningkatkan daya saing HD sebagai perusahaan startup di era industry 4.0. Penelitian menggunakan pendekatan deskriptif eksploratif. Pengumpulan data menggunakan kuesioner dan wawancara. Responden survei terdiri dari 241 orang (57,66%) perempuan dan 177 orang (42,34%) laki-laki, sedangkan wawancara dilakukan kepada stakeholder  HD. Hasil penelitian menunjukkan bahwa strategi existing yang digunakan oleh perusahaan startup HD terletak pada aspek sumber daya manusia, keuangan, tata kelola perusahaan, dan pemasaran. Sedangkan analisis SWOT menunjukkan bahwa HD berada pada posisi kuadran IV dimana memiliki kelemahan dan ancaman yang berarti, sehingga strategi yang sesuai untuk disarankan ke HD adalah strategi W-T/strategi defensif. Strategi defensif diimplementasikan dengan melakukan penguatan dan positioning serta branding HD yang tidak hanya berfokus di Jabodetabek dan pulau Jawa saja.
Düzce İli Fındık Bahçelerinde Tarımsal Uygulamalar ve Üreticilerin Pestisit Kullanım Durumu
Authors: BATUR Tuba , ARSLAN Zübeyde Filiz , ALTIN Nedim
Published: October 2023

Amaç: Bu çalışma, Düzce ili fındık bahçelerinde tarımsal uygulamaların ve pestisitler ile ilgili sorunların belirlenmesi amacıyla yürütülmüştür.

Materyal ve Yöntem: Çalışma, 2022-2023 yıllarında Düzce ilinde yürütülmüştür. Düzce Merkez ve ilçelerinde (Akçakoca, Cumayeri, Çilimli, Gölyaka, Kaynaşlı ve Yığılca) ikamet eden 30 üretici ile yüz yüze görüşülerek anket çalışması yapılmıştır. İlçelerdeki anket sayıları, fındık üretim alanı ve miktarı dikkate alınarak belirlenmiştir. Üreticilere fındık bahçelerindeki tarımsal yapı ve uygulamalar, üreticilerin demografik ve sosyo-ekonomik durumları, pestisit uygulama durumları ile pestisitler ile ilgili bilinç düzeyleri hakkında 48 soru sorulmuştur ve elde edilen sonuçlar oransal olarak hesaplanmıştır.

Araştırma Bulguları: Çalışma sonucunda, üreticilerin pestisit seçiminde ve dozuna karar vermede ilaç bayilerinden ve Tarım ve Orman İl/İlçe Müdürlükleri’nden bilgi aldıkları, pestisitin etkili maddesinin ve fiyatının tercihlerinde önemli olduğu, bitki koruma etmenleriyle mücadelede sürekli aynı pestisitleri uygulamadıkları, zararlı ve hastalıklar görülmeden ilaçlamaya başladıkları, pestisitleri tavsiye edilen dozda uyguladıkları, son ilaçlama ile hasat zamanı arasındaki bekleme süresine uydukları, pestisitleri uygularken koruyucu kıyafet ve maske kullandıkları ancak kalibrasyon yapmadıkları, bazı pestisitleri karıştırarak uyguladıkları, bitki koruma etmenleriyle mücadelede çoğunlukla kimyasal mücadeleyi tercih ettikleri saptanmıştır.

Sonuç: Sonuç olarak, Düzce ili fındık üreticilerinin bahçelerindeki tarımsal zararlılarla mücadelede pestisit uygulamayı tercih ettikleri, pestisitler ile ilgili temel bilgilere sahip olmalarına rağmen pestisit uygulamaları konusunda bazı hataları olduğu kanısına varılmıştır. Üreticilere yönelik eğitimler verilerek mevcut sorunların azaltılması ve üretim kalitesinin artırılması sağlanmalıdır.
Evaluation of Antimicrobial Effects of Fresh and Dried Fruit in Turkish Tombul Hazelnut Variety
Authors: USTA Mehtap , BİRYOL Seda , SOYDİNÇ Ali
Published: October 2023

Objective: The aim of the study was to determine the antimicrobial properties of fresh and dried fruits of Turkish Tombul hazelnut (Corylus avellana L.) variety.

Materials and Methods: The Turkish Tombul hazelnuts used in the experiment were obtained from Helvacı Village/ Düzköy /Trabzon. Fresh hazelnuts were harvested in 2023, while dried hazelnuts were collected in 2022. The dried hazelnuts were dried at 105°C until they attained a consistent weight. This section was not created for fresh hazelnuts. The treated micelle was extracted for 4 hours with 100 mL of Ethyl alcohol (EtOH) for every 10 g of both the fresh and dried hazelnut samples crushed. The micelle (hazelnut+oil+solvent mixture) was filtered through coarse filter paper to remove particles before being blown away with a Rotary evaporator (Heidolph, Germany). The resulting extracts were used for antimicrobial testing. Antimicrobial activity of the strains was evaluated against Pseudomonas aeruginosa ATCC 27853, Enterobacter cloaceae ATCC2468, Enterococcus feacalis ATCC51299, Escherichia coli ATCC2471, Klebsiella pneumoniae ATCC700603, Salmonella typhimurium ATCC13311, Serretia marcescens ATCC13880, Staphylococcus epidermis ATCC14990, Staphylococcus aureus ATCC25923, Bacillus subtilis ATCC 6633, Streptococcus faecalis ATCC 9790, Yersinia pestis ATCC 19428 and Candida albicans ATCC10351. One-way analysis of variance (ANOVA) was run to determine any significant differences in the study groups by Duncan multiple range test was performed through SPSS.

Results: Dried hazelnut extract was effective in all of them, while fresh hazelnut extract was only effective on Candida albicans ATCC10351 and Klebsiella pneumoniae ATCC700603 (F (3, 8) = 65.45, p
Clonal Selection in the Local 'Trabzon Sivrisi' Hazelnut Population Grown in Some Districts of Trabzon
Authors: KAN Emre , İSLAM Ali
Published: October 2023

Purpose: The purpose of this study was to determine the clones with superior characteristics in the 'Trabzon Sivrisi' hazelnut population.

Materials and Method: The study was carried out in hazelnut orchards in the Araklı, Arsin and Yomra districts of Trabzon (Türkiye) in 2016 and 2017. The study was planned as selecting 3 different ocaks from each hazelnut orchard followed by the selection of a plant (branch) with the highest yield among these ocaks. Nut per cluster, yield (g), kernel weight (g), kernel ratio (%), shell thickness (mm), kernel cavity (mm), good kernel (%) and defective kernel belonging to the selected hazelnut clones in the study were examined and recorded. In addition, the protein (%), and fat ratio (%) were determined.

Results: Out of 207 clones observed and examined in the research area, 8 are promising and recommended for further research. Clones numbered TY42-3 and TA42-2 with a total score above 400 were selected according to the modified weighted grading method carried out at the end of the study. In the examination made according to nut characteristics the following clones were evaluated as promising: TAK20-2 in terms of nut per cluster, TA39-1 in yield, TY35-3 in kernel weight, TY15-1 in shell thickness, TY1-3 in kernel percentage, good kernel, and defective kernel rate and TY28-1 in terms of kernel cavity.

Conclusion: In this study, 8 clones were evaluated as hopeful. The fact that cultural practices such as irrigation, pruning and fertilization were not carried out in the orchards where the study was carried out both increases the value of the data obtained and reveals the importance of our country regarding the gene center. It is important for our country to continue the study and put the clones determined as promising under trial in controlled conditions, to follow the process and to take them to the registration process.
Effectiveness of Some Environmentally Friendly Products on Hazelnut Powdery Mildew Caused by Erysiphe corylacearum
Authors: SEZER Arzu
Published: October 2023

Objective: Powdery mildew disease caused by Erysiphe corylacearum is one of the main diseases affecting the yield and quality of hazelnut (Corylus avellana L.), one of the most important agricultural products of Türkiye. The study was conducted in Giresun in 2017 to determine the effect of some environmentally fiendly products (one biological fungicide, one fungicides containing plant extract and one plant activator) against the disease.
Materials and Methods: As environmentally fiendly products against to disease, commercial products including AQ 10 (Ampelomyces quisqualis M-10 isolate), Regalia (Reynoutria spp. extract) and ISR 2000 (Lactobacillus acidophilus fermentation product) were used. For comparison Quadris Maxx (Azoxystrobin 200 g/l+Difenoconazole 125 g/l), a chemical fungicide known to be effective against this disease, was also used in the study. A total of five spraying applications beginning at the fruit setting time, prior to appearance of disease symptoms were performed. Disease severity values on hazelnut leaves and fruits were calculated according to the Townsend-Heuberger formula using the 0-4 scale. The efficacy of fungicides was determined using Abbott’s formula.
Results: The effectiveness of AQ 10 (Ampelomyces quisqualis M-10 isolate) was 21.07% on leaves and 21.29% on clusters; for Regalia (Reynoutria spp. extract) 19.13% and 28.09% anf for ISR 2000 (Lactobacillus acidophilus fermentation product) 19.23% and 10.80% on leaves and fruits respectively. Regarding chemical fungicide, Quadris Maxx (Azoxystrobin 200 g/l+Difenoconazole 125 g/l), the effectiveness was 91.98% on leaves and 73.63% on clusters.
Conclusion: The chemical fungicide Quadris Maxx (Azoxystrobin 200 g/l+Difenoconazole 125 g/l), used in this study provided sufficient efficacy for the disease control, while the efficacy of environmentally friendly products used was found to be quite low. However, it is very important to use of environmentally friendly products for the disease control and the further studies should be conducted.
Azerbaycan’da Yetiştirilen Bazı Fındık Çeşitlerinin Meyve Özellikleri
Authors: İSMAYİLZADA Binyat , KARAGÖL Selim , İSLAM Ali
Published: October 2023

Amaç: Çalışmanın amacı Azerbaycan’ın kuzeyinde yer almakta olan Zakatala ve Kebele bölgelerinde yetişen ‘Atababa’, ‘Qızıl fındıq’, ‘Yaghli’ ve ‘Saşaqlı fındık çeşitlerinin meyve özelliklerinin belirlenmesidir.

Materyal ve Yöntem: 2021 ve 2022 yıllarında yapılan meyve hasadından elde edilen meyveler delikli torbalarda kurutulmuş ve Ordu Üniversitesi Ziraat Fakültesi pomoloji laboratuvarına getirilmiştir. Meyvelerde çotanaktaki meyve sayısı, kabuklu ve iç fındığa ait meyve özellikleri, kusurlu meyve özellikleri ile yağ ve protein oranları araştırılmıştır. Sonuçlar JMP 13.0 istatistik paket programında analiz edilmiştir. T testi sonuçlarına göre, önemli farklılıklar Tukey çoklu karşılaştırma yöntemi ile %5 önem seviyesinde belirlenmiştir.

Araştırma Bulguları: Araştırmalar sonucunda çotanaktaki meyve sayısının 1.78 ile 2.12 arasında meyve ağırlığı 2.15 g ile 1.48 g arasında, kabuk kalınlığı 1.31 mm ile 1.07 mm arasında, iç oranı ise %47.26 ile %32.27 arasında bulunmuştur. Yağ oranları %41 ile %50.05 arasında, protein oranları ise %15.55 ile %25.30 arasında bulunmuştur.

Sonuç: Azerbaycan’ın iki farklı bölgesinde yetişen 4 farklı fındık çeşidinin (‘Atababa’, ‘Qızıl fındıq, ‘Yaghli’ ve ‘Saşaqlı’) yağ ve protein oranları düşük bulunmuştur. Diğer önemli meyve özelliklerinden iç oranı bakımından incelendiğinde meyvelerin iç oranlarının ülkemiz çeşitlerinden düşük, Avrupa’da yetişen diğer çeşitlerle paralellik gösterdiği belirlenmiştir. Fındık tarımında verim ve kalitenin artırılması yönünde sürdürülebilir çalışmalara ağırlık verilmesi önerilmektedir.
Bazı Yabancı Fındık Çeşitlerinin Ordu Ekolojisinde Verim ve Kalite Performanslarının Araştırılması (1. Verim Yılı)
Authors: İSLAM Ali , KARAGÖL Selim , CRISTOFORI Valerio , ROVIRA Mercè
Published: October 2023

Amaç: Bu çalışma İtalya ve İspanya’dan introdüksiyon amacı ile getirilip dikilen çeşitlerin Ordu ekolojisinde gelişme ve verim performanslarını belirlemek amacıyla yürütülmüştür.

Materyal ve Yöntem: Bu çalışmanın materyallerini Negret, ‘Castanyera’, ‘Segorbe’, ‘Tonda di Giffoni’, ‘Tonda Gentile Romana’ ve ‘Nocchione’ fındık çeşitleri oluşturmaktadır. Çeşitler tek gövdeli olarak 3x6 m mesafe ile 3 tekerrürlü dikilmiştir. 2023 yılında ilk hasat yapılmıştır. Meyve özellikleri olarak kabuk kalınlığı, kabuklu meyve ve iç ağırlığı, meyve ve iç boyutları, iç oranı, göbek boşluğu incelenmiştir. Ayrıca bitki başına verim, çotanakta meyve sayısı ve çotanak sayıları da belirlenmiştir.

Araştırma Bulguları: Çeşitlerin ortalama çotanaktaki meyve sayıları 1.93 olarak tespit edilmiştir. Çeşitlerin ortalama meyve kabuk kalınlıkları 1.49 mm iken en ince kabuklu çeşit 1.33 mm ile TGR olmuştur. Çeşitlerin ortalama meyve ağırlığı 3.02 g olup en ağır meyveli çeşit 3.89 g ile ‘Castanyera’ olmuştur. ‘Segorbe’ çeşidi 439 g/bitki ile en yüksek verim değerine sahip olurken bunu 259 g/bitki ile Negret izlemiştir. Yine çeşitlerin ortalama meyve şekil indeksi ise 1.09 olarak hesaplanmıştır.

Sonuç: Ordu ekolojisinde yetiştirilen bazı yabancı kökenli fındık çeşitlerinin introdüksiyonuna yönelik olarak başlatılan bu çalışma İspanya çeşitleri olan Negret, ‘Castanyera’ ve ‘Segorbe’ ile İtalya çeşitleri olan ‘Tonda di Giffoni’, ‘Tonda Gentile Romana’ ve ‘Nocchione’ fındık çeşitlerine yönelik Türkiye’de yapılan ilk adaptasyon çalışmasıdır. Elde edilen sonuçlar benzer çalışmalara da ışık tutacak mahiyettedir. Verim, meyve özellikleri ve diğer özelliklere ait verilerin tam verim çağına kadar alınmaya devam ettirilmesi önem taşımaktadır.
Menggambar Ragam Hias Lombok Bagi Calon Guru Sekolah Dasar Sebagai Upaya Pelestarian Budaya Lokal: Suatu Kajian Berdasarkan Pandangan Ki Hajar Dewantara
Authors: Dewi Nurul Kemala , Suharto Suharto
Published: October 2023

Penelitian ini bertujuan untuk mendeskripsikan kegiatan menggambar ragam hias Lombok bagi calon guru sekolah dasar sebagai upaya pewarisan budaya lokal berdasarkan pandangan Ki Hajar Dewantara. Jenis penelitian adalah kualitatif. Pengumpulan data dengan observasi, studi literatur, dan dokumentasi. Data dianalisis secara interpretatif. Pengamatan dilakukan dengan mencermati kegiatan pembelajaran yaitu 1. Dosen memberikan arahan-arahan terkait dengan ragam hias Lombok. 2. Mahasiswa mengkreasikan ragam hias. Melalui pengamatan dan penciptaan karya, mahasiswa memperoleh pengetahuan mengenai bentuk-bentuk ragam hias Lombok serta dapat mewujudkan gagasannya terkait dengan kreasi ragam hias. Dosen memfasilitasi kegiatan proses penciptaan karya ini dengan memberikan motivasi agar mahasiswa dapat menuangkan ide-ide kreatif dengan sebaik-baiknya. 3. Mahasiswa mempresentasikan hasil karyanya di depan kelas untuk mendapat tanggapan dari teman-teman ataupun dosen. Kegiatan ini menunjukkan bahwa mahasiswa sudah memiliki pengetahuan terkait dengan ragam hias daerah Lombok. Hal ini merupakan perwujudkan dari teori Kontinuitas Ki Hajar Dewantara terkait dengan pelestarian dan pewarisan budaya. Dosen berfungsi sebagai pendorong/motivator agar mahasiswa memperoleh pengetahuan dan keterampilan terkait dengan seni budaya lokal yaitu ragam hias Lombok, yang sesuai dengan sistem Among Ki Hajar Dewantara. Dengan demikian maka menggambar ragam hias Lombok bagi calon guru sekolah dasar merupakan salah satu upaya pelestarian dan pewarisan budaya lokal dan kelak dapat diwariskan kembali kepada siswa.
Pengembangan Cerita Bergambar Berbasis Etnomatematika Sebagai Penunjang Literasi dan Numerasi di Sekolah Dasar
Authors: Rahmah Nirmala , Ibrahim Doni Septu Marsa , Yazid Muh.
Published: October 2023

Penelitian ini bertujuan untuk mengembangkan cerita bergambar berbasis etnomatematika sebagai penunjang literasi dan numerasi di sekolah dasar. Jenis penelitian menggunakan desain penelitian pengembangan ADDIE yaitu tahap analisis (analysis), tahap desain (design), tahap pengembangan (development), tahap implementasi (implementation), dan tahap evaluasi (evaluation). Penelitian ini dilakukan pada peserta didik kelas IV dengan jumlah siswa 25 peserta didik. Instrument penelitian dan pengembangan ini menggunakan lembar validasi ahli materi lembar validasi ahli media dan angket respon peserta didik. Hasil uji validasi ahli materi dengan jumlah skor 83 berada pada rentang skor X > 82, 8 dengan kategori “Sangat Baik”. Hasil uji validasi ahli media dengan jumlah skor sebesar 65 berada pada rentang skor X > 63 dengan kategori “Sangat Baik”. Hasil dari angket respon peserta didik yang dilakukan pada saat uji coba lapangan memperoleh skor 1530 dengan rata-rata sebesar 61,2. Hal ini menunjukkkan bahwa respon peserta didik baik terhadap penggunaan cerita bergambar berbasis etnomatematika dan layak digunakan dalam proses pembelajaran di kelas IV SDN 4 Menceh kec. Sakra Timur.
Application of Scientific Approach-Based Learning Assisted by Question Cards and Ladder Snake Media for Evaluating Learning Outcomes
Authors: Gultom Sio Tuti , Sinaga Rafles , Silaban Ramlan
Published: October 2023

This study aims to determine the differences in student learning outcomes by applying to learning using question cards and snakes and ladders media through a scientific approach to the topic of acid-base discussion. Ultimately, the evaluation of improving the learning outcomes of students by learning using question cards and ladder snake media through a scientific approach to the topic of acids and bases is reported in this study. The population in this study were all students of class XI MS SMA Negeri 20 Medan, total three classes. The sample was taken by purposive sampling in two classes. The first class was experimental I, taught using a scientific approach using question cards, and the second class was experimental class II, conducted using a scientific approach using snakes and ladders. Each experiment class consists of 32 students. The research instrument was a multiple choices objective test instrument of 25 questions which had been tested for validity, reliability, discriminating power, and level of difficulty for learning outcome data. Test the first hypothesis using a two-party t-test, and SPSS 21 (independent samples t-test) results obtained for experimental class I with a tcount value of 32.320 > ttable 1.70. In contrast, the experimental class II has a tcount value of 31.231 > ttable 1 .70 at a significance level of 0.000 < 0.05. The second hypothesis test using the proper side t-test and in SPSS 21 (paired samples t-test) obtained a mean of 5.000 and a t-test value of 2.648 with a sig value of 0.010 <0.05.
Pengembangan LKPD Terintegrasi Etnosains Batik Semarang untuk Meningkatkan Literasi Kimia Siswa
Authors: Siami Fitri , Sumarni Woro , Sudarmin Sudarmin , Harjono Harjono
Published: October 2023

Permasalahan penelitian ini adalah perkembangan abad 21 yang menuntut seseorang memiliki kemampuan khusus, yaitu literasi kimia. Hal ini sesuai dengan kurikulum 2013 yang menuntut tanggap terhadap perkembangan ilmu pengetahuan, budaya, teknologi dan seni. Tujuan penelitian ini untuk mengembangkan LKS dan meningkatkan kemampuan literasi kimia siswa pada materi asam basa. Metode yang digunakan menggunakan pendekatan penelitian pengembangan dengan alur penelitian yang mengadopsi model pengembangan 4-D yaitu define, design, development, dan diseminasi. Namun penelitian ini dilakukan hingga tahap 3-D yaitu define, design, dan development. Kelayakan LKPD dilihat melalui penilaian validator ahli materi sebesar 92,86% dan validator media sebesar 96,67% dengan kategori “Sangat Layak”. Keefektifan LKPD dilihat dari hasil pretest-posttest dengan N-Gain sebesar 0,81 kategori tinggi. Hasil analisis literasi kimia pada aspek pengetahuan konten, epistemik dan prosedural adalah 94,30%, 81,39% dan 64,45%. Sedangkan aspek konteks dan kompetensi menghasilkan 84,07% dan 92,22%. LKPD yang dikembangkan dinyatakan layak oleh ahli dengan kategori sangat layak, dan dinyatakan efektif karena memperoleh nilai N-Gain yang tinggi.
Analysis of Item Characteristics of Natural Sciences National Examinations for Junior High School Based on the Classical Test Theory Approach
Authors: Mariana Mariana , Lessy Djaffar , Riaddin Dinar , Hardiansyah Muhammad Rizal , Pary Corneli
Published: October 2023

This study aims to analyze the characteristics of the items based on the classical test theory approach. This research is exploratory research with a quantitative approach. The data used in this study were data from the 2015 Science Subject National Examination for Junior High School in Daerah Istimewa Yogyakarta (DIY) province. The samples taken in this study were 9054 students. Test takers are grouped into high groups and low groups based on the total score obtained. Estimation of item parameters using Excel and QUEST. The results of the analysis show that based on the classical test theory approach, the average item difficulty level ) in the high group is in the easy category, while in the low group, it is in the medium category, the average item differential index ( ) shows that the test ability to distinguish students with high abilities and low abilities in both the high and low groups is in the unfavorable category; and the reliability coefficient of the test (ρ) in the high group has high reliability, and the low group has perfect reliability
Development of Physics Test Instrument to Measure Verbal Representation of High School Student on Optical Instrument Topic
Authors: Pradana Pramudya Wahyu , Febriani Febriani , Ibnusaputra M. , Jumadi Jumadi
Published: October 2023

In the context of Physics learning, verbal representation is very important to foster problem solving skills. However, the role of these representations has not been thoroughly measured and supported by good measurement instruments. In addition, the topic of optical instruments has concepts that can be expressed with verbal representations and is one of the important topics in physics. Therefore, in this study, an instrument was developed to measure students' verbal representation ability on optical instrument topic. The objectives of this research are to (1) determine the instrument's construction and (2) find out the feasibility of the instrument. The instrument was developed following the modified Wilson, Oriondo, and Antonio procedure through three stages: design, testing, and test preparation. The test was piloted on 88 randomly selected students who had studied optical instrument topic. The analysis carried out in this development includes content validity, item-model fit, reliability, and item difficulty level analysis. The development was successful in providing feasible test instrument items for evaluating students' verbal representation of optical instrument topic. This instrument is expected to be used to capture information about students' verbal representation ability, which will then be analyzed to produce more appropriate physics learning instructions.
Implementation QR-Code for Introducing Optical Instruments
Authors: Husna Hanna Nurul , Zawjiyah Siti Mita Rofi’atun , Widia Chita
Published: October 2023

The laboratory is one of the important facilities and supports the implementation of learning in tertiary institutions. However, in carrying out practicum activities, students are often constrained by information regarding names, functions, and steps for using instruments. Therefore, the need for information about laboratory equipment is quite important for students. This study aims to produce a website based on a QR code to provide information about the instrument to users and the steps to use it. This research uses research and development methods with the ADDIE model (Analysis, Design, Develop, Implementation, and Evaluation). The questionnaire is used to measure user responses regarding the QR code and its application. Based on the analysis of the problems found, the QR code was successfully created. This QR code was validated by media experts and instrument content experts and obtained valid results. Users show a positive response regarding the use of the QR code for introducing of Refraction Laboratory instruments. Thus, a website-based QR code can be used to provide optical instrument information to users. However, socialization about its use is very necessary for laboratory users.
Development of local wisdom-based Subject-Specific Pedagogy (SSP) to improve students' scientific literacy skills
Authors: Kartika Ika , Atika Iva Nandya , Widyasari Friscandany Dhiaz , Putranta Himawan
Published: October 2023

Indonesia is a cultural nation with a richness of indigenous knowledge that must be conserved, one of which is science education in schools. This study intends to develop an integrated science Subject-Specific Pedagogy (SSP) based on the indigenous knowledge of producing Bobung wooden masks from Gunung Kidul, Yogyakarta, Indonesia and to improve students’ scientific literacy. The study employed the ADDIE-based research methodology, which included needs analysis and preliminary research analysis. Planning and creating rough drafts of the product serve as the design phase, and expert validation and revision serve as the development phase. Implementation in a small number of classes, evaluation through SSP use, and dissemination for grade VIII students. The study's findings were used to create a SSP with components such as a syllabus, lesson plans, student teaching books and modules, student worksheets, and assessment sheets rated as very good based on experts' validation. The produced SSP can raise the scientific literacy of junior high school students in grade VIII with an N-gain of 0.69.
Development of Problem-Based Learning Modules on Environmental Pollution Materials to Improve Student Learning Outcomes
Authors: Pakaya Sri Yustika Candri , Dama Lilan , Hamidun Marini Susanti , Nusantari Elya , Baderan Dewi Wahyuni K. , Katili Abubakar Sidik
Published: October 2023

This research was calssifed as a Research and Development (R&D) that aimed to detemine the validity, practicality, and effectivenes of developing problem-based learning module to improve students’ learning outcomes. The samples consisted of 20 students in class X of SMA Negeri 7 PrasetyaGorontalo. This research was conducted to create module tahtreffered to the ADDIE model (Analysisi, Design, Development, Impelemntation, and Evaluation), but it was only limited to the development stage, namely the limited trial develpment stage. The instruments used were interview, validation sheet, and student response questionnaire, implementation of learning (teacher activity), student activity, and pre-test dan post-test. Teh result of module validation analysis with here validators obtained an average score of 85% (very valid). Meanwhile, the result of practicality analysis was observable from the teacher activity which obtained an average score of 93.3% (very good), the student activity in the small group trial obtained an average score of 90% (very good), and the student responses obtained an average score 88% (very feasible). In the meantime, the result of effectiveness analysis were observable from the result of N-Gain analysis in small group trial which obtained an average score of 0.62% (fairly effective). To conclude, the development of problem-based module on enviromental pollution topic intending to improve the students’ learning outcomes had met the valid and practical criteria but has not been effetive due to it only reached a limited trial. However, the module was feasible to use in the learning process.
Application of the Guided Inquiry Model to Improve Psychomotor Skills and Interest in Learning Physics
Authors: Septyowaty Rury , Azizahwati  , Syafii Muhammad
Published: October 2023

This study aims to find out how to apply the guided inquiry learning model to improve the ability of psychomotor skills and learning interests of grade X students of TKPI SMKN Fisheries Riau Province. This type of research is a Classroom Action Research Physics model of Kemmis and Mc Taggart which consists of 2 cycles, where each cycle includes stages of planning, action and observation, as well as reflection. In cycle I, students learn about temperature and heat, and cycle II, students learn about dynamic electricity. Data collection techniques include observation sheets of teacher and student activities, performance tests, and interest questionnaires. The subjects of this study were grade X TKPI students, totaling 16 male students.The data were analyzed in descriptive, qualitative and quantitative manners. Observations are made by peers to observe the implementation of teacher and student activities in accordance with the learning steps in RPP. Performance tests are carried out at the end of each cycle. Filling out the learning interest questionnaire at the end of cycle I and cycle II. The results of research on how to apply the guided inquiry method are by the way the teacher makes an orientation of a problem that will be formulated by students to attract students' attention, then involves students directly in making hypotheses, conducting experiments, analyzing data to train students' psychomotor skills, so that students are happy in making conclusions for the theories they get. The research data showed that teacher activities and student activities were carried out according to the RPP, with very good criteria, students' psychomotor skills at the level of imitation, manipulation and precision trained in each learning meeting, increased by 25%, from 69% classical completeness to 94%, and students' interest in learning physics after applying the guided inquiry learning model increased by 16% from 65% with sufficient criteria to 81% with very good criteria. Students have a feeling of pleasure being actively involved in the learning process, so they are interested and more attentive to learning.
Study on the Quality of Mako-mako River Water as Clean and Raw Water Source in Yembekiri Village
Authors: Mangallo Bertha , Oktaviani Devi
Published: October 2023

This study aims to determine the water quality of the Mako-mako river based on physical, chemical and microorganism parameters as well as the effect of metal and microorganism levels on the color of the water and sediment of the Mako-mako river. The method of sampling water, sediment and plankton by purposive sampling at three locations, namely the upstream, middle and downstream of the river. The concentrations of Fe and Mn in water and sediment were analyzed using AAS, while the identification of plankton using a binocular microscope. The results of the analysis of the water quality of the Mako-mako river show that the parameters of temperature, TDS, TSS and Mn are still below the water quality standard for class 1, except for the Fe and total coliform parameters whose concentrations have exceeded the water quality standard. The metal content of Fe in sediment is high and affects the color of the Mako-mako river sediment which is reddish brown to dark brown (deep). The presence of plankton with a low level of abundance and diversity index did not affect the color of the river water or the sediment of the Mako-mako riverSo that to use the Mako-mako river water as a source of raw water, clean water needs to go through a processing process.
High School Students’ Perceptions about Implementation of the Merdeka Curriculum in Biology Lessons in Samarinda
Authors: Swandana Hariska , Tindangen Makrina , Herliani Herliani
Published: October 2023

The Fourth Industrial Revolution has had Indonesia to be determined to foster students’ critical thinking, creativity, collaboration, communication, and technological proficiency, leading to the creation of the Merdeka Curriculum to enhance the curriculum in Indonesia. The implementation of this curriculum began in Indonesia in 2020, starting with pioneer schools including in Samarinda. Consequently, a study was conducted at pioneer high schools in Samarinda focusing on students' perceptions of Biology learning using the Merdeka Curriculum. This qualitative research involved students and educators engaged in the implementation of the curriculum. The study utilized interviews and data triangulation. The informants were gathered using the snowball sampling technique. The findings indicate the implementation of the Merdeka Curriculum in pioneer high schools in Samarinda encompasses the planning, execution, and evaluation of components: diagnostic assessment, formative and summative assessments, differentiated teaching modules, Pancasila Student Profiles reinforcement projects, and supportive learning environment. These components align with curriculum planning and learning principles, fostering positive impact on students' skills including critical thinking, analytical abilities, literacy, public speaking, and creative thinking. Additionally, the curriculum promotes character development such as diligence in religion and spirituality, self-confidence, self-independence, creativity, empathy, responsibility, courage to innovate, negotiation skills, leadership skills, and collaboration with peers.
Effect of Science Teaching Materials Integrated Blended-PBL Models on Students’ 21st Century Skills: A Meta-Analysis
Authors: Fitria Dinelti , Lufri Lufri , Asrizal Asrizal , Maharani Aprina
Published: October 2023

The objective of the study was to analyze the effect size of a number of similar studies on students' 21st century skills. The research method can be classified into meta-analysis. In this meta-analysis method, the effect size of each similar study was determined and the hypotheses were tested from a number of similar studies. In this study, 26 similar articles were analyzed from national journals and international journals. As independent variables are science teaching materials, as moderator variables are types of teaching materials, learning models, and level of education. From the results of the analysis, it can be stated that science teaching materials have a positive effect on 21st century skills based on the type of teaching materials, learning models, and educational level. Therefore, the use of science teaching materials is effective for improving students' 21st century skills both in terms of various types of teaching materials, learning models, and educational levels
Access of Clean Water and Sanitation with The Incidence of Environmental-Based Diseases in The Working Area of The Oesapa Sub-District
Authors: Suluh Debora G. , Theodolfi Ragu , Agustina  , Waangsir Ferry WF
Published: October 2023

Sanitation is an effort to prevent disease that focuses on environmental health efforts for human life. The purpose of this study was to determine access to clean water and the condition of basic sanitation facilities in the Oesapa Village, Kupang City. Sources of clean water used by the people of Oesapa Sub District consist of 72% dug wells, 15% PDAM, and 12% tank water. Ownership of clean sir facilities: 78% use privately owned SAB and 22% use neighbor-owned (shared use). The condition of clean water facilities with a high-risk level of 53%, moderate 32%, high 13% and very high 2%. Condition of family latrines 38% high-risk level, 61% low-risk level. SPAL conditions have a low-risk level of 91%, a medium of 5% and a high 4%. There is a relationship between the condition of clean water facilities and the incidence of environmental diseases in the Oesapa sub-district and there is no relationship between the condition of the sanitation facilities (latrines and SPAL) and the incidence of environmental-based diseases in the Oesapa sub-district.
Relationship between Misconceptions and Students' Scientific Literacy Abilities on Global Warming Material
Authors: Aini Eva , Evendi Evendi , Halim A. , Syukri M. , Yusrizal Yusrizal
Published: October 2023

This study aims to identify misconceptions experienced by students, the level of scientific literacy skills and the relationship between misconceptions and scientific literacy skills on global warming. The research method used is correlational research with a quantitative approach. The sample selected was 80 students using purposive sampling technique. The instrument used was 10 items to measure misconceptions with a four-tier multiple choice diagnostic test and 10 test items to measure scientific literacy skills. The results of the analysis of misconceptions with CRI showed that the category of misconceptions was 44% with moderate criteria, students who understood the concept were 32% and did not understand the concept by 32%. The results of the analysis of scientific literacy skills obtained an average value of 40.65, a percentage of 40.7% and is in the low category after interpretation. The aspect of scientific literacy that is measured in the highest percentage is the context aspect with an average percentage of 48.1%, the knowledge aspect is 40.4% and the competence aspect is 34.1%. The results of the analysis of the relationship between misconceptions and scientific literacy skills were carried out using the Pearson product moment correlation test which showed a positive and significant relationship with a significant value of 0.008 < 0.05 and a large correlation value of 0.270 with a low category. Based on the hypothesis test, the results show that there is a positive relationship between misconceptions and scientific literacy skills with tcount 2.476 > ttable 1.990.
Effect of Interactive Conceptual Instruction Assisted by PhET Simulations on the Student’s Scientific Consistency in Physics
Authors: Furqon M
Published: October 2023

This study aims to determine the effect of Interactive Conceptual Instruction Assisted by PhET Simulations on students' scientific consistency. The research method used was quasi experiment with the matching-only pretest-posttest control group design involving 62 students in one of the high schools in Indonesia. The instrument used was an scientific consistency test modified from the Representational Variant of Force Concept Inventory (R-FCI). The data obtained were analyzed by t-test and N-Gain. The results showed that Interactive Conceptual Instruction Assisted by PhET Simulations can improve students' scientific consistency.
Effect of Organophosphate Insecticides in Cattle Farming Feed on FSH and LH Hormone Levels in Dairy Cows in Kediri and Pujon
Authors: Hendrawan Viski Fitri , Agustina Galuh Candra , Oktanella Yudit , Firmawati Aulia , Mariyam Dewi
Published: October 2023

The issue plaguing the dairy cattle industry as a whole is low reproductive efficacy due to nutritional and reproductive disorders. To overcome this, nutrients in feed play a very important function. Feed is an essential component of any livestock operation. The requirements for animal protein depend on physiological status and production level. Ruminants can also reduce protein loss by recycling urea, a normally excreted byproduct of protein metabolism. Insecticides are components of pesticides used to kill insects. Organophosphate insecticides (OPs) are phosphate-containing insecticides. Phosphoric acid used to manufacture organophosphate insecticides. This insecticide is notorious for being the most toxic to mammals. This study seeks to determine the effect of feed-containing organophosphates on FSH and LH hormone concentrations in the blood of dairy cows. Mid-lactation For the purpose of this study, Friesian Holstein dairy cattle were divided into two experimental groups, group 1 (first ration) and group 2 (second ration). ANOVA analysis was used for statistical analysis.
Effect of Hypnobreastfeeding on Milk Production in Stunting Prevention Efforts in North Tapanuli District
Authors: Sitompul Emilia Silvana , Simbolon Juana Linda
Published: October 2023

Indonesia is still facing nutrition problems that affect the quality of human resources. The problem of malnutrition is still quite high in Indonesia, especially the problem of stunting. Stunting can occur as a result of malnutrition, especially during 1000 HPK. The Lancet Breastfeeding 2016 states that breastfeeding can reduce infant mortality due to infection by 88%, besides that breastfeeding also contributes to reducing the risk of stunting in the future. Hypnobreastfeeding helps mothers ensure that they can continue to breastfeed, at least exclusively for the first six months. To prevent stunting, optimizing breastfeeding with Hypnobreastfeeding can reduce stunting rates in the North Tapanuli Regency so that the Sustainable Development Goals (SDGs) target in 2025 can be achieved by a 40% reduction. The study aims to determine the difference in prolactin hormone levels before and after the application of hypnobreastfeeding in breastfeeding mothers. The research was a quasi-experiment using pre and Post-tests with a control group design. The sampling technique used purposive sampling on postpartum mothers with a total sample of 30 people. This research was conducted in July-November. Statistical tests using the Wilcoxon test.  To determine the difference in prolactin levels before and after hypnobreasfeeding, the p-value = 0.02, so that the p-value <0.05 can be concluded that there is a difference in prolactin hormone levels before and after the application of hypnobreastfeeding in nursing mothers. Based on the results of the study, hypnobreastfeeding can be an intervention for breastfeeding mothers to succeed in exclusive breastfeeding.
Factors Affecting Junior High School Students' Scientific Literacy: An Empirical Study
Authors: Mayasari Ade , Usmeldi
Published: October 2023

This research goals to find out the effect of factors that affecting Junior High School scientific literacy such as reading habit, learning motivation, learning achievement, parental attention and creativity, and the effect between each variable. This empirical study used the PLS-SEM in data analysis with SmartPLS 3.0 version app. The number of study samples was 270 students. The samples were taken by probability sampling technique with stratified random sampling type by school accreditation. Questionnaire and test techniques were employed in data collection. The output revealed that there were significant effect of reading habit and creativity on scientific literacy, with a t-value ≥ t-statistic of 1.96. There was no significant effect of learning motivation, learning achievement and parental attention on scientific literacy, with a t-value ≤ t-statistic of 1.96. In addition, there were significant effect of reading habit on learning motivation and creativity, parental attention to reading habit, learning motivation and learning achievement, and learning motivation to learning achievement and creativity.
Role and Effectiveness of the Ciletuh-Palabuhanratu Geopark in Acceleration Achievement of Sustainable Development Goals Pillars of Economic Development
Authors: Khasanah Uswatun , Martono Dwi Nowo , Supriatna Supriatna
Published: October 2023

Geoparks are developed areas for sustainable development, both from social, economic, and environmental aspects. The Ciletuh-Palabuhanratu Geopark, Sukabumi Regency, West Java Province, which has been recognized as a UNESCO Global Geopark, is believed to be able to contribute to building the local community's economy with the geotourism activities it offers. It is hoped that improving the local economy will help improve the quality and welfare of people's lives. It will accelerate the achievement of SDGs targets in the pillars of economic development, especially SDGs 8. This research aims to analyze the role and effectiveness of the Ciletuh-Palabuhanratu Geopark as an agent for accelerating the achievement of SDG 8. The method used is a combined method, statistical descriptive and qualitative with structured interviews with business actors and tourism community members. The research results show that three indicators have been achieved: increasing the number of tourists, workers, and industrial linkages, but sub-indicators in industrial linkages, namely restaurants and travel services, have yet to be maximized. In general, the Geopark has been proven to function as a means of contributing to the achievement of SDG 8. Still, it requires particular strategies to increase growth in economic sub-indicators to achieve the SDG 8.
Cerebral Histopathology in Acute Toxicity Test of Curcuma Zedoria
Authors: Lubis Adhayani , Wardhani Fiska Maya , Lubis Anisa Taqwa , Tandanu Erny
Published: October 2023

This research aims to determine the effect of the acute toxicity test of white turmeric extract (Curcuma zedoaria) on the brain organ. This research is experimental research with a Post Test Only Control Group Design. This research was conducted at the Pharmacy and Histology Laboratory. Faculty of Medicine. University of North Sumatra. The research was carried out from January to March 2023. The population in this research involved male white rats (Rattus norvegicus). The results of the acute toxicity test of white turmeric extract for 14 days showed no signs of toxicity or death in rats given the smallest to largest doses, resulting in an apparent LD50 value of white turmeric extract is >2 g/kgBW, and is classified in the practically non-toxic category. Rats that received white turmeric extract showed movement or activity, appearing more energetic by the end of the second week with increasing doses. Histopathological examination of the brain in the acute toxicity test revealed minimal changes, such as edema and congestion in line with increasing doses.
Analysis of Diversity of Food Consumption in Families of Stunting Toddlers
Authors: Suhaimi Ahmad , Roni Muhammad , Kusumayana Purna
Published: October 2023

The nutritional status of toddlers is an indicator of the diversity of family food consumption. This research aims to determine the diversity of food consumption in families of stunted toddlers and its relationship to the incidence of stunting in toddlers in Batang Alai Selatan District, Hulu Sungai Tengah Regency, South Kalimantan. This type of associative research uses primary and secondary data sourced from respondents and BPS data from Hulu Sungai Tengah Regency. This research uses analysis of food consumption patterns with the help of 24-hour food recall. The relationship between diversity in family food consumption and the incidence of stunting in children under five using Chi-square analysis. The research results show that the DDP score for food diversity for toddlers in Batang Alai Selatan District reached 77.3. The criteria for food consumption for families of children under five in the research area it still needs to be more diverse because it is still dominated by the grain food group (52.8%) and animal food (38.3%). The Chi-Square test results show that the relationship between food consumption diversity and the incidence of stunting in toddlers has an Asymp value. Sig. (2-sided) 0.000 < 0.05, the calculated Chi-Square value is 20.17 > Chi-square table 3.841, so it can be concluded that there is a significant relationship between the diversity of family food consumption and the incidence of stunting in toddlers
XTR algorithm based encryption for Security in computer
Authors: Kamil Hilal Bushra , Q.Jawad Mohammad , W.Shehab Ahmed
Published: October 2023

The idea of XTR was first presented by Lenstra et al. in Crypto 2000. The efficient and compact subgroup trace representation is referred to as XTR Discrete logarithm (DLP) is considered as the basis for the security of the XTR. cipher system. It is regarded as a good substitute for the RSA and elliptic curve cryptosystems. We shall go into great detail on the mathematics underlying XTR and its uses in cryptography in this book chapter. Keywords \s• Cryptography\s• XTR