bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects Of Driving Signal Waveshape On The Velocity Field And Heat Transfer Of Impinging Synthetic Jets
Authors: Paolillo G. , Greco C.S. , Astarita T. , Cardone G.
Published: July 2023

The present work reports on the measurements of the velocity fields and the heat transfer of impinging synthetic jets driven by different waveshapes. The actuator consists of a loudspeaker oscillating inside a cavity provided with a circular nozzle. Sinusoidal input voltage signals with variable ejection duty cycle d (ratio of the duration of the positive part of the signal to the total period) are applied to investigate the influence of the waveshape on the jet dynamics and the thermal performance. A parametric study is carried by varying both d (0.3, 0.4, 0.5, 0.6, 0.7) and the Strouhal number St (0.062, 0.12, 0.19) at constant value of the Reynolds number (3,000) and fixed nozzle-to-plate distance (equal to 2 nozzle exit diameters). The phase and time-average evolution of the synthetic jets is characterized by means of planar Particle Image Velocimetry; simultaneous measurements of the heat transfer coefficients are carried out via infrared thermography using a heated thin foil as heat flux sensor. The present results show that d plays only a minor influence on the time-averaged velocity structure for all the values of the Strouhal number investigated. Nevertheless, for the highest value of St increasing d has a detrimental effect on the heat transfer. The phase-averaged velocity measurements reveal that this behaviour is essentially related to the reduced strength of the synthetic jet vortices formed during the ejection phase, which in fact dominate the heat transfer in such a configuration.
Instance Segmentation And Flow-Regime-Based Classification Of Tufts Using A Deep Neural Network
Authors: Tsalicoglou C. , Rösgen T.
Published: July 2023

Tufts are often used to identify unsteady flow and flow separation regions on aerodynamic models. To deduce information about the flow, the tufts' range of motion can be inspected visually in a sequence of short-exposure frames or on long-exposure images . We propose using Mask R-CNN, a Convolutional Neural Network (CNN) for instance segmentation, to segment and classify tufts as stationary or fluttering based on their range of motion. This method automates the detection of regions of unsteady flow while at the same time providing accurate segmentation masks and endpoint predictions for each tuft. The network is trained on fully synthetic data, and we obtain good results in the segmentation, classification, and keypoint detection of both synthetic and experimental data. The proposed method demonstrates the value of employing neural networks for vision-based tasks in experimental fluid dynamics and highlights the potential of using synthetic training data for similar applications.
Diffuse Back-Illumination Extinction Imaging Of Soot Formation From A Liquid Fuel Film
Authors: Chen C. , Li Y. , Akagi F. , Hardalupas Y. , Taylor A.M.K.P.
Published: July 2023

The transient combustion of a liquid iso-octane film, isolated from the often co-existing combustion of liquid sprays, was investigated within the nominally quiescent ambient of a constant volume chamber using a custom-made liquid fuel film generation system. Soot formation throughout the combustion process, from ignition to extinction, was visualized using high-speed diffuse back-illumination extinction imaging technique, providing temporally resolved spatial distribution of soot optical thickness (KL) in the chamber. The impact of ambient pressure and ambient oxygen content on soot formation was examined over a range of 2 – 5 bar (absolute) and 16 – 30% (in terms of molar fraction of oxygen), respectively. Regardless of the test conditions, the fuel film combustion entailed three stages, namely flame initiation, steady burning and flame extinction. While the ambient oxygen content was kept constant, the flame gradually became turbulent-like and the flame flickering less distinct as ambient pressure was increased. The total amount of soot generated within the chamber was found to first increase then decrease with the ambient pressure, due to the competing impacts of increasing pressure on promoting soot-formation reaction rate and enhancing mixing of fuel vapour with the entrained air. Increasing ambient oxygen content, on the other hand, consistently enhanced soot formation, which may be associated with its impact on boosting flame temperature and consequently liquid fuel evaporation rate. In addition, flame flickering remained distinct for ambient oxygen content above atmospheric level, while becoming substantially less observable for that below atmospheric level. Flickering frequency, for all test conditions with distinct flame flickering, had a value of approximately 10 Hz and gradually increased with time during the steady burning stage, suggesting the shrinkage of the fuel film diameter. Flickering of the flame resulted in fluctuations in the total amount of soot presented in the combustion chamber. The power of this fluctuation varied with time, and this temporal variation of fluctuation power also depended on experimental conditions, due to its dependency on the combined effects of soot concentration and volume of the flame.
Intense large-scale motions in zero and adverse pressure gradient turbulent boundary layers
Authors: Shehzad M. , Sun B. , Jovic D. , Ostovan Y. , Cuvier C. , Foucaut J.M. , Willert C. , Atkinson C. , Soria J.
Published: July 2023

Proper orthogonal decomposition (POD) is used to study coherent structures in wall-bounded turbulent flows. The present study uses POD in turbulent boundary layers to determine the contributions of the intense large-scale motions (LSMs) to the Reynolds stresses. This study uses the 2C-2D PIV measurements of zero pressure gradient turbulent boundary layers (ZPG-TBL) at Re_{δ2} = 7750, and adverse pressure gradient turbulent boundary layer (APG-TBL) at β = 2.27 and Re_{δ2}= 16240, where Re_{δ2} is the momentum thickness based Reynolds number and β is the Clauser’s pressure gradient parameter. The measurements were obtained in the Laboratoire de Mécanique des Fluides de Lille (LMFL) High-Reynolds-Number (HRN) Boundary Layer Wind Tunnel, Lille, France. The snapshots of the flow field are segregated into those dominated by the intense and mild LSMs based on the intensity of the temporal coefficients of the first POD mode. The intense LSMs are further decomposed into high-momentum (HM) and low-momentum (LM) motions. The relative contributions of the HM motions to the Reynolds stresses are larger near the wall as compared to the LM motions. At the wall-normal distance of the displacement thickness (δ1), HM and LM motions have similar contributions. Beyond δ1, the LM motions have larger contributions with their peaks located closer to the displacement thickness height. This shows that in the presence of an APG, the turbulence activity is shifted closer to the displacement thickness height.
Pressure From Data-Driven-Estimated Velocity Fields Using Snapshot PIV And Fast Probes
Authors: Chen J. , Discetti S. , Raiola M.
Published: July 2023

The pressure field estimation can be performed from Particle Image Velocimetry (PIV) data on the basis of the Navier-Stokes equation. This requires time-resolved velocity fields to directly compute time derivatives, which are often difficult to achieve due to hardware limitations or cost. Alternatively, snapshot PIV experiments are more affordable but require additional assumptions to model the time derivatives. In this work, we propose the use of data-driven techniques to combine snapshot PIV and high-repetition-rate sensors measurement, and obtain time-resolved estimated velocity fields. The instantaneous pressure fields can thus be computed.We explore building the relation between temporal modes of the flow field and the probe data is built using either linear and non-linear estimators, i.e. Extended Proper Orthogonal Decomposition (Extended POD) and a Multilayer Perceptron (MLP), respectively. The performances of both data-driven methods, as well as Taylor’s hypothesis model for the time derivatives, are tested on the synthetic dataset of a fluidic pinball and on experimental measurements in the wake of a wing. The results show that the data-driven pressure estimations have sufficient accuracy and are not affected by time propagation of the error. Both data-driven methods outperform the model-based method rooted on the Taylor’s hypothesis for the tested cases having compact POD spectra.
Development Of A Turbulent Boundary Layer Over An Air Cavity
Authors: Anand A. , Nikolaidou L. , Laskari A. , Poelma C.
Published: July 2023

The turbulent boundary layer development over an air cavity is studied experimentally using planar Particle Image Velocimetry. An identification technique based on the gradient of correlation values was employed to detect the cavity interface which revealed a well-defined, asymmetric bump-like geometry at the spanwise-uniform region of the cavity. No separation was observed at the leeward side of the cavity, owing largely to the high boundary layer thickness to maximum cavity thickness ratio (δ/tmax ≈ 11.8). The shape of the cavity was found to dictate the turbulent boundary development by subjecting it to alternating streamwise pressure gradients: from an adverse to a favourable and back to an adverse, moving downstream along the cavity. Profiles o f mean s treamwise velocity and turbulent stresses show the alternate pressure gradients and air injection to be the dominant perturbations to the flow, with streamline curvature only having a minor influence, also based on previous observations.
Plasma Formation And Its Sustainment In Time And Space In Microwave Enhanced Laser Induced Breakdown Spectroscopy
Authors: Ikeda Y. , Soriano J.K. , Kawahara N.
Published: July 2023

The transient and unstable plasma generation in the laser-induced breakdown is potentially resolved by the addition of microwaves. The laser and microwave technology combination extends the plasma lifetime and enhanced its emission intensity and volume. The expansion of the plasma started a few seconds after the initial formation of the plasma seed and the absorption of the microwave by the plasma also started to take effect. Large dome-shaped plasma is then briefly sustained until the end of the microwave duration. As the plasma expands, the plasma drifts away from the sample surface which is a good indication of the non-ablation effect of the microwave energy. The expansion of the plasma by microwaves enhances the breakdown of the plasma but potentially regulates the formation of toxic ablation fumes.
DAMPAK PENILAIAN UNTUK PEMBELAJARAN TERHADAP MOTIVASI DAN KETERLIBATAN SISWA
Authors: Magdalena Ina , Andreani Melia Gita , Nurhasanah Silvia , Ushaybiah Zahwa Muflihah
Published: July 2023

Assessment in the context of learning has an important role in influencing student motivation and engagement. Effective assessment can have a significant positive impact on student's motivation to learn and their level of engagement in the learning process. Through formative assessments that provide constructive and informative feedback, students can correct their shortcomings and see their progress first-hand, which directly influences their motivation to continuously strive to improve achievement. Assessments that reward and recognize students' achievements can also increase their motivation. In addition, assessments that actively involve students in the assessment process, such as project- or portfolio-based assessments, and assessments that encourage social interaction, can increase student engagement. However, it is important to ensure that effective assessment is fair, objective, and differentiated so that each student gets feedback that is relevant to their needs and level of development. In conclusion, effective assessment should be viewed as a learning tool that encourages student motivation and engagement in the learning process.
Pengaruh Persepsi Mahasiswa Tentang Pendidikan Pajak dan Pengetahuan Pajak Terhadap Kepatuhan Wajib Pajak (Studi Kasus di STIE Port Numbay Jayapura)
Authors: Saptowinarko Prasetyo Margo , Pravitasari Putri Eka
Published: July 2023

Pada penelitian ini bertujuan untuk mengetahui pengaruh pendidikan pajak dan pengetahuan pajakterhadap kepatuhan wajib pajak. Populasi penelitian ini adalah mahasiswa Sekolah Tinggi Ilmu Ekonomi Port Numbay Jayapura.Penentuan sampel dilakukan dengan Non-Probability Sampling yaitu Purposive Sampling, dengan Kriteria sampel pernah mengikuti mata kuliah perpajakan. Sampel yang digunakan dalam penelitian ini adalah 81 mahasiswa.Hasil penelitian ini menunjukkan bahwaPendidikan Pajak berpengaruh positif dan signifikan terhadap Kepatuhan Wajib Pajak secara parsial.Pengetahuan Pajak berpengaruh positif dan signifikan pada Kepatuhan Wajib Pajak secara parsial.Pendidikan Pajak dan Pengetahuan Pajak secara simultan atau Bersama Berpengaruh terhadap Kepatuhan Wajib Pajak
الوعي بمستحدثات تقنيات التعليم لدى الطالب المدرس في كلية التربية للعلوم الصرفة
Authors: عبود سهاد عبد الأمير , خليفه حنين فاضل
Published: July 2023

هدف هذا البحث إلى معرفة مستوى الوعي بمستحدثات تقنيات التعليم لدى الطالب المدرس في كلية التربية للعلوم الصرفة، وطبقت تجربة البحث في الفصل الدراسي الثاني من العام الجامعي (2020- 2021) على عينة من طلبة الصف الرابع من قسم الكيمياء في كلية التربية للعلوم الصرفة – ابن الهيثم، تألفت عينة البحث من (40) طالباً وطالبة بواقع (20) طالباً و(20) طالبة اختيرت عشوائياً، واعدت الباحثتان أداة للبحث وهي مقياس الوعي بمستحدثات التعليم، وتالف من (22) فقرة، تم التحقق من صدقه وثباته وبلغ معامل الثبات (0.85) باعتماد معادلة الفا – كرونباخ.

ولتحقيق هدف البحث تم استخدم المنهج الوصفي التحليلي، واعتمدت الباحثتان الوسائل الإحصائية وهي معادلة الوسط المرجح في حساب حدة الفقرة، ومعادلة الوزن المئوي في حساب الوزن المئوي للفقرة، وفي ضوء النتائج أوصت الباحثتان بضرورة الاهتمام بمستوى الوعي بمستحدثات تقنيات التعليم.
التغطية الصحفية لقضايا الإرهاب في الصحافة العراقية دراسة مسحية للمدة من 1/7/2014 - 30/6/2015 في صحف (الصباح، الزمان، المدى)
Authors: علوان محمد حسين
Published: July 2023

تهدف هذه الدراسة إلى معرفة مقومات التغطية الصحفية لموضوع الإرهاب في صحف (الصباح, الزمان, المدى) فضلاً عن معرفة مدى اهتمام الصحف بإخبار الإرهاب عن طريق تحديد موقع النشر في صفحاتها, واستخدم الباحث عينة بلغت (474) عددًا للمدة من 1/7/2014 –30/6/2015, وخلصت الدراسة عن العديد من النتائج ومنها ليس هنالك تعريف محدد للإرهاب، وليس هناك اتفاق محدد من قبل المنظمات الدولية, والموقف من الإرهاب يختلف زمانًا ومكانًا على وقف طبيعة مواقف الدول والمنظمات من مجريات الإحداث, والخبر أساس التغطية الصحفية ومن ثم التقرير الصحفي, وجريدة الصباح تعكس سياسة الحكومة الوطنية.
Desa Kreatif: “Jalan Baru” Pembangunan Desa Mandi Angin Di Era Pariwisata
Authors: Chaniago Ade Indra , Pratiwi Diany Putri , Indah Pusnita  , Austin Trecy
Published: July 2023

Desa Mandi Angin memiliki potensi ekonomi kreatif yang cukup besar terutama dibidang kain tenun songket. Tenun songket ini secara turun temurun telah dijalankan secara mandiri oleh warga desa. Selain itu desa ini pernah menjadi binaan Dinas Perindustrian Perdagangan Koperasi dan Usaha Kecil Menengah Kabupaten Ogan Ilir namun belum sesuai dengan apa yang diharapkan. Hal ini menjadi fokus pelaksanaan pengabdian masyarakat adalah bagaimana mengolah potensi Desa Mandi Angin menjadi potensi desa wisata kreatif . Tahapan pelaksanaan penelitian, yaitu Tahap Perencanaan (identifikasi masalah, identifikasi output); 2. Tahap pelaksanaan (observasi, wawancara, dokumentasi, perumusan konsep); 3. Tahap tindak lanjut (diskusi, pengolahan data). Dari hasil pelaksanaan kegiatan diperoleh bahwa beberapa hal yang perlu dilakukan dalam pembangunan di Desa Mandi Angin menjadi desa kreatif adalah branding desa, digitalisasi marketing produk desa,  peningkatan peran pemerintah daerah dalam memaksimalkan potensi desa yang ada.
Menumbuhkan Jiwa Kepemimpinan Siswa Melalui Pembelajaran Public Speaking Pada SD Negeri 1 Desa Cipakem Kecamatan Maleber
Authors: Darsih Endang , Agie Hanggara  , Cucu Suhartini
Published: July 2023

Tujuan dari pelaksanaan kegiatan pengabdian kepada masyarakat ini adalah menumbuhkan jiwa kepemimpinan melalui pembelajaran public speaking pada siswa SD Negeri 1 Desa Cipakem Kecamatan Maleber. Pengabdian kepada masyarakat ini menggunakan metode konvensional  dengan 4 materi pembelajaran public speaking yang dipersiapkan tim, peragaan oleh pemateri, serta praktek public speaking langsung oleh siswa. Dari hasil kegiatan diperoleh kesimpulan bahwa kegiatan berjalan dengan sukse dan sesuai dengan harapan tim pengabdian kepada masyarakat. Hasil evaluasi kegiatan menunjukkan bahwa kegiatan pembelajaran public speaking dapat meningkatkan keberanian siswa siswa, meningkatkan cara berkomunikasi siswa, meningkatkan kemampuan mengendalikan suasana  dan mempertajam daya ingat siswa. Apabila proses pembelajaran seperti ini  secara terus menerus dilaksanakan maka secara tidak langsung akan memberikan dampak kepada jiwa kepemimpinan yang dimiliki siswa.
Pelatihan Evaluasi Hasil Belajar Menggunakan Ms Excel Sebagai Upaya Peningkatan Kualitas Sistem Pembelajaran Pada MAS YPKS Kota Padang Sidempuan
Authors: Novita Aswan  , Hasibuan Ferawati Artauli , Hery Dia Anata Batubara  , Yusra Fadhillah  , Muhammad Noor Hasan Siregar
Published: July 2023

Tujuan kegiatan ini adalah meningkatkan pemahaman tenaga pendidik tentang evaluasi hasil belajar serta dapat menerapkan penggunaan Ms Excel dalam pelaksanaan evaluasi hasil belajar peserta didik. Tahapan kegiatan dibagi menjadi 4 yang terdiri dari tahap observasi, tahap Focus Group Discussion, Simulasi, dan evaluasi. Metode pelaksanaan simulasi dibagi menjadi 2 sesi yaitu sesi ceramah dan demonstrasi serta sesi latihan terbimbing. Hasil pelaksanaan kegiatan menunjukkan bahwa terjadi peningkatan pemahaman tenaga pendidik  terhadap evaluasi hasil belajar menggunakan Ms Excel. Kegiatan ini memberikan manfaat peningkatan kemampuan dalam evaluasi hasil pembelajaran dan peningkatan profesionalisme tenaga pendidik dalam melaksanakan pembelajaran di masa mendatang.
Standarisasi Kerja Dalam Mengurangi Barang Retur Pada Sub Divisi Mobil Box Sunter PT Dunia Express Transindo
Authors: Rosyidi Edward , Yuselin Nensi , Putri Luthfia
Published: July 2023

Kegiatan ini bertujuan untuk mengetahui barang apa saja yang paling sering mengalami retur, faktor penyebab barang retur, dan cara mengurangi barang retur pada Sub Divisi Mobil Box Sunter PT Dunia Express Transindo. Metode analisis masalah pada kegiatan ini dimulai dari persentase dan  breakdown data barang retur, analisis Metode Pareto,Diagram Fishbone dan tabel sebab akibat, Dalam menentukan solusi dari masalah digunakan metode 5W + 1H. Dari hasil kegiatan diperoleh susu, makanan ringan (plastic), dan minyak goreng merupakan barang yang sering diretur oleh konsumen. 20% penyebab utama barang retur ini adalah barang penyok, barang terlipat, dan barang tidak sesuai jumlah yang dipesan. Setelah dilakukan analisis Diagram Fishbone, akar masalah diketahui faktor manusia dan faktor metode. Berdasarkan metode 5W + 1H, maka diperoleh rekomendasi untuk melakukan penambahan SOP yang spesifik dan penambahan simbol peringatan pada mobil truk.
Multistakeholder's Roles in Creating Job Vacancy for Youth through Community Development
Authors: Azizah Reni Nur , Wahyuni Ekawati Sri , Mulyono Pudji
Published: July 2023

The development of the Wangsakerta youth community which has been carried out since 2016 has implications for the ability and innovation of the younger generation to take part in the non-formal sector which provides benefits for themselves and the surrounding community. Various self-development activities are carried out so that the younger generation is able to have self-confidence and be able to create various jobs independently. The purpose of this study was to analyze the influence of youth characteristics and youth participation on job creation according to social capital. This study uses a stakeholder analysis method using the penta helix. The results showed that academic stakeholders or IAIN Syekh Nurjati Cirebon played a role in organizing training activities to support the abilities and insights of the youth community at the Wangsakerta nature school. Business actor stakeholders play a role in establishing relationships such as non-governmental organizations through Ms. Farida Mahri, in this case the relationship creates partners for the development of Saung Wangsakerta to date. Communities or non-governmental organizations have a role in gaining relationships or networks for the development of the Saung Wangsakerta youth community. The government, through Karang Taruna, plays a role in helping in the development and construction of Saung Wangsakerta, such as participating in the construction of Saung or places of learning. The media plays a role as a publication in promotion. The village government is not involved as a controller, regulator and provider in the development of the Saung Wangsakerta youth community.
Community Empowerment Program by PT Pertamina Patra Niaga DPPU Ngurah Rai
Authors: Kinasih E A A J Putri , Septian Muhammad Saghar , Erly Yeniska Hermitasari  , Farka Alfa Centauri
Published: July 2023

This paper seeks to explain the community empowerment program carried out by PT Pertamina Patra Niaga DPPU Ngurah Rai as a commitment in implementing CSR. The community empowerment CSR program is called Eco-Religion Waste Management System Kedonganan Ngardi Resik. The background of the development of this program, namely: the preservation of customs and culture of the community in Kedonganan Traditional Village Bali. The community there conducts prayer activities through canang facilities made of “janur” as an expression of gratitude to Him. After the worship is over, the canang is forced to become a residue that is disposed of in the landfill because the community is not used to sorting waste from the smallest scale. This community empowerment program was developed through the Logical Framework Approach (LFA) model in responding to environmental crises carried out with the Kedonganan Traditional Village Bali community by mainstreaming religious, social, and cultural communities to create an integrated waste management system. This program has succeeded in creating a disciplined community in sorting waste from the household level and processing waste into compost and bio charcoal briquettes that are reused by the community. This program also contributes to reducing environmental impact of reducing greenhouse gas emissions.
Developing Science Skills and Introducing Traditional Herbal Medicine to Children through Science Experiment: Making Ice Cream
Authors: Hidayat Agung , Witjaksono Nikmal Kevin , Mufasir Ahmad , Fujiwara Akihito , Arif Akbarudin , Al Amna Hanif Sajid , Herdiansyah Rayhan Rifyal , Hafifah Indhika Rahma Nur , Setyani Aprillia Dwi , Febrian Muhammad Ilham , Makrifah Elmi , Nurhidayati Fridya Ikafitri
Published: July 2023

This activity aims to explain how the science experiment of making herbal ice cream can be used as an engaging and enjoyable method to teach science and culture. The activity took place at SD Negeri 1 Kismoyoso, Ngemplak District, Boyolali, Central Java. It was designed to help students gain understanding of scientific concepts such as chemical reactions and changes in the state of matter, as well as introduce them to the diversity of local medicinal plants. The students at SD Negeri 1 Kismoyoso were engaged in the practical process of making ice cream using herbal ingredients, specifically ginger. They also learned about the health benefits of each herbal ingredient used in making the ice cream and its connection to the scientific concepts underlying the ice cream-making process. The results of this activity demonstrated that the science experiment of making herbal ice cream can help students develop scientific skills such as observation and experimentation. Students were able to learn about various medicinal plants and their properties, as well as how these plants can be utilized to create healthy and delicious ice cream. The science experiment of making herbal ice cream serves as an effective learning method to help students explore science and culture in a holistic manner.
Linear Maps Preserving Inverses of Tensor Products of Hermite Matrices
Authors: Yan Shuang , Zhang Yang
Published: July 2023

Let C be a complex field, H_{m_1m_2} be a linear space of tensor products of Hermite matrices H_{m_1}⊗H_{m_2} over C , and suppose m_{1}, m_2≥2 are positive integers. A linear map f :H_{m_1m_2} → H_n is called a linear inverse preserver if f( X_{1} ⊗X_{2} )^{-1}= f( X_{1}⊗X_{2}) ^{-1} ) for arbitrary invertible matrix X_{1} ⊗ X_{2}∈ H_{m_{1}m_{2}} .The aim of this paper is to characterize the linear maps preserving inverses of tensor products of Hermite matrices.
Aktivitas Elo Pukek Di Pesisir Selatan Dalam Seni Lukis Realis
Authors: Yofri Hardiansah  , Yasrul Sami
Published: July 2023

The purpose of this final work is to visualize the elo pukek activity in South Pesisir in realist painting. This is a form of the author's anxiety towards fishermen who participate in elo pukek activities who have less income in proportion to the hard work and risks faced, such as erratic waves, changing weather and sea animals that suddenly attack. The method of creation in the final work is carried out in stages, namely the preparation stage by searching for information, elaboration by analyzing the problem, synthesis setting the idea, realization of the concept by making realist paintings and the completion stage by conducting an exhibition. Ten paintings with a size of 100 cm x 100 cm with acrylic media on canvas based on the theme of "social phenomena" in accordance with the predetermined idea of elo pukek activities by South Pesisir fishermen were developed through ten work titles namely "starting", "hope", "compactness", "spirit", "tough", "unwinding", "results", "buying", "carefree", "sweat".
Privacy Aspects of Contact Tracing Applications in Europe and Recommendations for Their Future Use
Authors: Tombul Raif Baran
Published: July 2023

The first global pandemic in the age of digitalism indicated that there might be new types of privacy risks stemming from the processing activities taking place within the scope of digital contact tracing activities. While the right to life of all individuals living in the community should be primarily protected, their right to privacy should also be considered. Therefore, a balance between privacy and public health should be struck by both regulators and data controllers. The purpose of this review is to analyze the compliance efforts of data controllers in Europe with the existing EU data protection regulations, and guidance, and draw lessons for the use of contact tracing applications within the scope of potential disaster scenarios that may arise in the future by reviewing the existing literature and the privacy policies of the applications.
Mauro, E.; Levi, L.; Fabbrini, S. & Pasquino, G. (2023). La Formazione del Sistema Partitico Europeo – The Formation of the European Party System
Authors: Ferreira Diogo
Published: July 2023

BOOK REVIEW OF: 
Mauro, E.; Levi, L.; Fabbrini, S. & Pasquino, G.La Formazione del Sistema Partitico Europeo – The Formation of the European Party SystemLatina, Atlantide Editore, 2023, 120 p.ISBN: 978-88-99580-88-9
PHÁT TRIỂN SẢN XUẤT NHÓM RAU, GIA VỊ HỮU CƠ TẠI VÙNG TRUNG DU VÀ MIỀN NÚI PHÍA BẮC
Authors: Nguyễn Thế Chinh  , Nguyễn Thị Liễu  , Tạ Thị Thanh Huyền  , Đỗ Thị Hòa Nhã  , Phạm Thị Ngọc Vân  , Tạ Thị Ngọc Hà  , Trần Đức Văn
Published: July 2023

Bài viết nghiên cứu vấn đề phát triển sản xuất rau, gia vị hữu cơ tại vùng Trung du và Miền núi phía Bắc. Bài viết sử dụng nguồn số liệu thứ cấp đến năm 2021 và các phương pháp phân tích truyền thống như thống kê mô tả, so sánh để đánh giá. Kết quả cho thấy, rau, gia vị hữu cơ đã được trồng tại nhiều tỉnh trong vùng với quy trình sản xuất phù hợp, các hình thức liên kết trong sản xuất ngày càng đa dạng và mang lại hiệu quả kinh tế nhất định cho người nông dân. Tuy nhiên, hoạt động này còn một số hạn chế: Diện tích sản xuất còn thấp; cơ cấu mặt hàng chưa đa dạng; liên kết sản xuất chưa chặt chẽ; thị trường tiêu thụ sản phẩm còn khó khăn và hiệu quả kinh tế chưa thật sự ổn định. Từ thực trạng đó, nghiên cứu đã đề xuất 5 nhóm giải pháp phát triển sản xuất, tiêu thụ nhóm sản phẩm này trong thời gian tới.
ĐÁNH GIÁ ĐẶC ĐIỂM KHÍ HẬU, ĐIỀU KIỆN KHÍ HẬU NÔNG NGHIỆP, THỜI TIẾT BẤT LỢI VÀ THIÊN TAI CÁC TỈNH NINH THUẬN, BÌNH THUẬN
Authors: Dương Văn Khảm  , Đặng Quốc Khánh  , Dương Hải Yến  , Nguyễn Văn Sơn
Published: July 2023

Ninh Thuận và Bình Thuận là các tỉnh có điều kiện khí hậu khá phực tạp, luôn phải đối mặt với khí hậu khắc nghiệt, lũ lụt trong mùa mưa, hạn hán kéo dài trong mùa khô, khô nóng khốc liệt gây ảnh hưởng rất lớn đến sản xuất nông nghiệp (SXNN). Trên cơ sở số liệu khí tượng và số liệu SXNN ở hai tỉnh và vùng phụ cận, áp dụng các phương pháp thống kê trong khí hậu (KH), khí hậu nông nghiệp (KHNN), bài báo đã đánh giá một cách có hệ thống các điều kiện KH, KHNN ở Ninh Thuận và Bình Thuận bao gồm điều kiện ánh sáng với tổng số giờ nắng trong năm nằm trong khoảng 2.879,8 - 3.105,9 giờ, nhiệt độ trung bình năm nằm trong 26,7 - 27,3oC. Biên độ nhiệt độ các tháng từ 6 - 8oC, biên độ nhiệt độ năm khoảng 6,8 - 7,5oC. Tổng nhiệt năm dao động từ 319,9 - 328,1oC. Lượng mưa 838,5 - 1.639,1 mm, nhưng lượng mưa phân bố không đều trong năm. Lượng mưa tích lũy đầu mùa, cuối mùa, xác suất 2 - 3 tuần khô ướt đã thể hiện quy luật khá rõ ràng về sự phân bố mưa trong năm. Những kết quả này là cơ sở khoa học quan trọng phục vụ quy hoạch SXNN, chuyển đổi cơ cấu cây trồng, giảm thiểu tác hại của thiên tai ở Ninh Thuận, Bình Thuận.
ĐÁNH GIÁ BIẾN ĐỘNG CÂN BẰNG NƯỚC DƯỚI ĐẤT TẠI CÁC TẦNG CHỨA NƯỚC HOLOCEN VÀ PLEISTOCEN TRONG TRẦM TÍCH ĐỆ TỨ LƯU VỰC SÔNG NHUỆ - ĐÁY
Authors: Tống Thanh Tùng  , Nguyễn Bách Thảo  , Nguyễn Thị Thanh Thủy  , Triệu Đức Huy  , Hoàng Văn Hoan  , Phạm Bá Quyền  , Bùi Quang Hương  , Phạm Văn Tuấn
Published: July 2023

Cân bằng nước dưới đất là một phần của quản lý tài nguyên nước dưới đất nói riêng và quản lý tài nguyên nước nói chung. Biến động cân bằng nước dưới đất (NDĐ) tại các tầng chứa nước Holocen và Pleistocen trong trầm tích Đệ tứ lưu vực sông Nhuệ - Đáy được thực hiện nhằm đánh giá sự thay đổi giữa lượng NDĐ được bổ sung và thoát theo thời gian ở các vùng cân bằng khác nhau. Các dữ liệu về cao độ mực nước dưới đất theo thời gian tại các công trình quan trắc tài nguyên nước quốc gia và các thông số địa chất thủy văn của các tầng chứa nước được thu thập, tổng hợp và phân tích. Trên cơ sở đó, các bản đồ đẳng cao độ mực NDĐ tại các tầng chứa nước lỗ hổng Holocen (qh), Pleistocen (qp) theo thời gian và các bản đồ đẳng hệ số dẫn nước, hệ số nhả nước và chiều dày của mỗi tầng chứa nước được xây dựng bằng công cụ GIS. Biến động cân bằng nước dưới đất tại hai tầng chứa nước qh và qp theo thời gian trung bình các tháng trong năm 2022 của các vùng cân bằng trong lưu vực sông Nhuệ - Đáy được tính toán theo phương pháp Darcy bằng công cụ Darcy Flow trong phần mềm Arcgis. Kết quả xác định biến động cân bằng nước dưới đất đã xác định tầng chứa nước qh được bổ sung dao động từ 1.911 m3/ngày đến 3.428 m3/ngày, trung bình 2.580 m3/ngày; tầng chứa nước qp được bổ sung dao động từ 33.401 m3/ngày đến 36.319 m3/ngày, trung bình 34.722 m3/ngày.
La formación de competencias para la publicación científica en actores universitarios
Authors: López Cruz Caridad Dailyn , Batista Mainegra Amado , Arias Salegio Illiana Stephanie
Published: July 2023

La Agenda 2030 para el Desarrollo Sostenible demanda la concepción de una universidad comprometida con la transformación cultural de las sociedades a las cuales tributa. Los procesos sustantivos contribuyen a la gestión de ese cambio mediante iniciativas que se concretan desde lo local en todas las áreas del conocimiento. Sin embargo, la cultura de la comunicación científica en los actores universitarios es aún insuficiente y limita la visibilidad de estos aportes en varios países de Latinoamérica. El presente estudio tuvo por objetivos diseñar e implementar un curso de postgrado dirigido a la formación de competencias para la publicación científica en actores del Instituto Especializado de Profesionales de la Salud de El Salvador; y socializar sus resultados. La investigación fue de tipo descriptiva transversal, y se desarrolló en dicha institución durante el 2022. Como resultados relevantes se lograron 45 artículos científicos, de los cuales 30 fueron aceptados en revistas científicas indexadas en bases de datos de prestigio regional. Se concluye que, el curso de postgrado es viable, y permite su sistematización en contextos específicos como alternativa para la formación de competencias comunicativas con fines de publicación en los actores universitarios.
Exploring the relationship between technostress and psychological well-being in basic education teachers: a cross-sectional study
Authors: Araoz Edwin Gustavo Estrada , Quispe-Aquise Jhemy , Huamani-Mallgui Amelia Yolanda , Salas-Tincusi Eusebio , Mamani-Calcina Biltron , Jara-Rodríguez Franklin
Published: July 2023

Objective: In the current digital age, teachers face additional challenges due to the constant use of technology in their work. Although technology has provided numerous educational opportunities and tools, it has also resulted in a new form of stress known as technostress. In this sense, the objective of the present investigation was to determine if technostress is significantly related to psychological well-being of basic education teachers.   Method: The research approach was quantitative; the design was non-experimental and the type corresponded to a descriptive-correlation study of transverse cutting. The sample was made up of 169 basic education teachers who were given the Technostress Questionnaire and the Psychological Well-being Scale for Adults, instruments with adequate levels of content validity and reliability.   Results: Preliminary, it was found that teachers were characterized by presenting low levels of technostress and high levels of psychological well-being. In addition, it was determined that Pearson correlation coefficient between both variables was -0.465 (p<0.05). Inverse and significant correlations were also observed between the technostress and acceptance (r= -0.442, p<0.05), autonomy (r= -0.474, p<0.05), connections (r= -0.411, p<0.05) and projects (r= -0.452, p<0.05). Similarly, it was found that there were reverse and significant correlations between psychological well-being and skepticism (r= -0.440, p<0.05), fatigue (r= -0.461, p<0.05), anxiety (r= -0.441, p<0.05) and inefficacy (r= -0.417, p<0.05).   Conclusions: There is an inverse and significant relationship between technostress and psychological well-being of basic education teachers. Therefore, it is recommended to promote healthy practices in the use of technology, such as practicing digital disconnection, promoting self-care and promoting conscious and balanced use of technology, to protect and improve the psychological well-being of teachers.
Dental Calculus as A Source of Bacterial Dna Analysis in Prehistoric Humans: a Systematic Literature Reviews
Authors: Handayani Fitri , Murnisari Darjan  , Malinda Yuti , Yondri Lutfi
Published: July 2023

Dental calculus is defined as mineralized dental plaque that is formed through the complex interaction between saliva and bacteria which adhere to the surface of the teeth. The plaque contains sources of bacterial genetic material which has the potential to be a source of information on ancient human health. Genetic sequences in the form of DNA are generated through a series of DNA extraction and through preparation of calculus samples of prehistoric human teeth. This research was conducted to determine the result of the identification of bacterial DNA found from ancient human skeletal dental calculus. This research was conducted using a literature study method through a systematic approach by collecting articles through an electronic search engine that fits the inclusion and exclusion categories. Of the 8 articles that met the criteria, 6 were research articles and 2 were reviewed articles. Four articles examined disease in ancient humans from the extraction of dental calculus in the paleolithic to early neolithic periods, two articles examined samples comparing modern humans and prehistoric humans and two others were reviewed article. Research that uses analysis of dental calculus has the potential to produce some information on life in pre-historic times besides that this research is also beneficial in future research so that it can be said that DNA analysis research uses dental calculus as a time capsule, because in dental calculus store a lot of genetic material that has the potential to store a lot of important information.
Keywords: ancient man; DNA bacteria; dental calculus
El uso los rincones de aprendizaje en el Subnivel 2 de Educación Inicial
Authors: Quijije-Barcia Mercedes Leonor , Román-Cao Eldis
Published: July 2023

Los rincones de aprendizaje son espacios que aportan en la adquisición de las destrezas y habilidades de los niños, además de lograr fortalecer el aprendizaje de manera significativa. El estudio tiene como objetivo describir el uso de los rincones de aprendizaje en el subnivel 2 de la Unidad Educativa Fiscal “Quince de Octubre. El desarrollo de este trabajo tuvo un enfoque enmarcado en el aspecto cuantitativo orientado por un diseño no experimental de tipo descriptivo, pues se describe el papel de los rincones de aprendizaje para un proceso de enseñanza y aprendizaje activo. La muestra en esta investigación estuvo definida por 45 niños y niñas y 6 docentes de inicial, es fundamental conocer que se trabajó con una muestra de tipo no probabilística de manera intencional por conveniencia; se debe tener en cuenta que para la selección de la muestra se tuvieron en cuenta aspectos relevantes como la identificación del problema. En relación a los resultados emitidos se logra determinar que no existe una buena organización en los rincones siendo evidente que no se les da el uso adecuado y no se aplican las actividades didácticas adecuadas para fortalecer el uso de los rincones de aprendizaje. Se concluye que es de gran importancia que se apliquen actividades lúdicas en los rincones de aprendizaje para fortalecer el desarrollo del aprendizaje y mejorar las habilidades y destrezas de los niños y niñas.
Grain iron and zinc densities in released and commercial cultivars of pearl millet (Pennisetum glaucum)
Authors: RAI K N , YADAV O P , GOVINDARAJ M , PFEIFFER W H , YADAV H P , RAJPUROHIT B S , PATIL H T , KANATTI A , RATHORE A , RAO A S , SHIVADE H
Published: July 2023

Crop biofortification is a cost-effective and sustainable agricultural strategy to reduce micronutrient malnutrition arising from iron (Fe) and zinc (Zn) deficiencies. A large number of hybrids and open-pollinated varieties (OPVs) of pearl millet [Pennisetum glaucum (L.) R. Br.] have been released and/or commercialized in India. Eighteen OPVs and 15 high-Fe candidate hybrids were evaluated in multi-location trials for Fe and Zn density to identify those with high density of these micronutrients. The Fe density in OPVs varied from 42 mg/kg to 67 mg/kg, and Zn density from 37 mg/kg to 52 mg/kg with ICTP 8203 having the highest Fe density (67 mg/kg) followed by ICMV 221 (61 mg/kg) and AIMP 92901 (56 mg/kg). While ICTP 8203 had also the highest level of Zn density (52 mg/kg), ICMV 221 and AIMP 92901 had 45-46 mg/kg Zn density. The Fe density in hybrids varied from 46 mg/kg to 56 mg/kg and Zn density from 37 mg/kg to 44 mg/kg. Four hybrids, viz. Ajeet 38, Proagro XL 51, PAC 903 and 86M86 had the highest Fe density of 55-56 mg/kg and 39-41 mg/kg Zn density. The six commercial cultivars (2 OPVs and 4 hybrids) identified in this study with high Fe and Zn densities can be undertaken for expanded cultivation in their recommended ecologies to specifically address the Fe and Zn deficiencies in India. This study also enabled to re-define base line for Fe density at 42 mg/kg for hybrids, the most dominant cultivar type grown in India.
Micro propagation technique in Kinnow mandarin (Citrus reticulata)
Authors: KUMAR RAJ , KAUL M K , SAXENA S N , KUMAR P , SINGH A K
Published: July 2023

Study on standardization of micro propagation technique in Kinnow mandarin was carried out using nodal segments of nucelles seedling as explants. The MS medium supplemented with BAP, NAA and IAA for shoot regeneration and IBA and NAA for rooting were used in different concentration either alone or in combinations. The minimum time required to bud break (15.80 days) required was noticed on MS medium modified supplemented with BAP 1.0 mg/l + IAA 0.5 mg/l. The maximum number of shoot (4.90) on 1.0 mg/l BAP + 0.5 mg/l NAA and length of shoot (2.62 cm) on BAP 1.0 mg/l + IAA 0.5 mg/l. The maximum per cent (90 %) of micro shoots responded to rooting was observed in medium containing 1.0 mg/l either IBA or NAA or in combination of NAA (0.5 mg/l) + IBA (0.1 mg/l). The minimum time required to root induction (18.40 days) was recorded with NAA (0.5 mg/l) + IBA (0.5 mg/l). The maximum number of roots (6.70) and length (4.40 cm) were observed on MS medium supplemented with NAA (0.5 mg/l) + IBA (0.5 mg/l). The rooted plantlets were successfully acclimatized in a green house, in pots containing sterile soil, perlite and vermiculite in equal proportion. After 60 days of acclimatization under greenhouse conditions, 85.0 per cent success was noted.
Influence of sunflower stover and nutrient management on growth, yield and energetics of sunflower (Helianthus annuus) in a pigeonpea (Cajanus cajan)- sunflower cropping system
Authors: BABU SUBHASH , RANA D S , YADAV G S , SINGH RAGHAVENDRA
Published: July 2023

A fixed plot field experiment was carried out during kharif and spring seasons of 2008-09 and 2009-10 at New Delhi, to study the effect of sunflower stover and nutrient management on growth, yield and energy dynamics of sunflower in a pigeonpea [Cajanus cajan (L.) Millsp.] -sunflower (Helianthus annuus L). cropping system. Results revealed that residual effects of sunflower stover incorporation resulted in higher values of growth attributes, seed yield (2.45 tonnes/ha), oil content (41.3%) and energy use efficiency (8.3) in succeeding sunflower crop in a pigeonpeasunflower cropping system. Residual effect of sunflower stover incorporation increased seed yield of sunflower by 19.5% over the no stover incorporation. Among the P levels applied to preceding pigeonpea, residual effect of 30 kg P/ha recorded the highest values of growth parameters resulted in 23.3% increase in the seed yield of sunflower over the control. Direct effect of RD of N and P (80 kg N+15 kg P/ha) recorded the significantly higher values of growth parameters, seed (2.71 tonnes/ha) and stover (4.44 tonnes/ha) yields, oil (42.3 %) and protein (14.9%) contents and net energy output (120.0× 103 MJ/ha)). Increase in seed yield due to RD of NP was 12.4% and 66.3% higher than 50% RD of NP and control, respectively.
Stability analysis of nutrient scheduling for lean season flowering in Arabian jasmine (Jasminum sambac)
Authors: NAIR SUJATHA A , VENUGOPALAN R
Published: July 2023

Stability parameters were estimated for eight characters of Jasminum sambac (L.) Aiton cv. Single mogra under five nutrient schedules for lean season flowering during three years 2008-11. The analysis of variance showed that the nutrient schedules had significant responses towards different environment changes. Significant nutrient schedule × Environment interactions were detected for all the eight characters, ie. number of leaves at flowering, days to flower initiation, number of flower buds/plant, hundred bud weight, yield/plant, bud length, pedicel length and flower diameter. The treatment T4 (application of 10 kg FYM/plant/year and 120:240:240 g/plant of NPK in four equal splits during February, May, September, December was found to improve lean season yield and is a stable nutrient schedule for the characters, viz. number of leaves at flowering, number of flower buds/plant and yield/plant.
HUBUNGAN ANTARA SELF-COMPASSION DAN LONELINESS PADA REMAJA BROKEN HOME
Authors: Lia Aulia Fachrial  , Nadira Maulydia
Published: July 2023

Loneliness merupakan suatu bentuk reaksi atau respon emosional negatif yang dirasakan individu saat mengalami kondisi dimana berkurangnya hubungan sosial yang diinginkan maupun ketika individu tidak mampu mencapai hubungan sosial yang diinginkannya. Broken home dapat menjadi salah satu pemicu munculnya loneliness, terlebih jika dialami oleh remaja. Terdapat suatu konsep yang memiliki keterkaitan dengan loneliness, yaitu self-compassion. Maka, tujuan dari penulisan ini adalah menguji secara empiris mengenai hubungan antara self- compassion dan loneliness pada remaja broken home. Teknik penentuan sampel menggunakan purposive sampling. Partisipan dalam penelitian ini adalah 134 remaja perempuan ataupun laki-laki berusia 15-22 tahun yang berlatar belakang broken home. Penulisan ini menggunakan metode kuesioner dengan dua alat ukur ukur, yaitu skala loneliness menggunakan R-UCLA version 3 dan skala self-compassion menggunakan self-compassion scale (SCS). Hasil uji hipotesis diperoleh bahwa terdapat hubungan bersifat negatif dengan sangat signifikan antara self-compassion dan loneliness pada remaja broken home (r = -0,631** ; sig = 0,000).
The impacts of the pandemic for the teacher in initial formation: The view of undergraduates
Authors: Littke Bruna Vieira Bardt , Lohn Luciana Gelsleuchter , Barcellos Michelle
Published: July 2023

With the arrival of the pandemic, sudden changes happened in education, forcing teachers and students to live in a new format of classes. These changes, without much planning, end up generating some effects, expected and not expected. This research aims to demonstrate the transformations that the pandemic has brought to the Degree in Chemistry course of the Federal Institute of Santa Catarina - Câmpus São José (IFSC - SJ), observed by the students. In this way, it aims to be able to observe its positive and negative points, and results of the transformations that occurred in the first year of the pandemic, the first and second semesters of 2020. In pursuit of this objective, 29 teachers in initial training at the institution were interviewed through questionnaires, where it was possible to perceive that the effects of the pandemic go far beyond the classroom and that they are reflected in the students' learning. It is concluded, after analysis of the data of the research, together with the bibliographic studies, that, even if amid different perspectives, due to the reality of each student, most of the interviewees were partially satisfied with the methodologies used in the period. And despite adverse results, the actions taken in the face of the pandemic have provided knowledge that will serve as the basis for the teacher training of these students. However, even bringing benefits, taking into account the emergency nature, they demand improvements to the environment.
Descripciones documentales de educación física escolar Brasil-Bolivia: entendimientos y provocaciones para las regiones fronterizas
Authors: Rosa Ana Claudia Guilherme da , Golin Carlo Henrique , Zaim-de-Melo Rogério
Published: July 2023

La investigación hace un análisis documental sobre los materiales oficiales de Educación, vinculados a la disciplina de Educación Física Escolar, producidos en Brasil y Bolivia. El objetivo principal fue describir y reflexionar sobre los documentos oficiales que regulan las prácticas de educación física escolar en cada país. Catorce documentos fueron seleccionados para su análisis. Los resultados indican que, aunque la educación física escolar en Brasil y Bolivia tienen singularidades, ambos países tienen documentos orientadores que apuntan a proporcionar pautas de "calidad", al menos en el campo "teórico-documental". Finalmente, concluimos que la investigación abre un abanico de posibilidades para futuros estudios, especialmente para ampliar la comprensión de los flujos, conflictos e intercambios entre ciudades fronterizas con contacto internacional, repensando el proceso de formación de docentes que puedan trabajar en estas regiones.