bluuebunny/crossref_metadata_2025 huggingface dataset:
High rates of nectar depletion in summer grasslands indicate competitive conditions for pollinators
Authors: Sponsler Douglas , Dominik Christophe , Biegerl Carolin , Honchar Hanna , Schweiger Oliver , Steffan-Dewenter Ingolf
Published: October 2023

Competition among pollinators for floral resources is a phenomenon of
both basic and applied importance. While competition is difficult to
measure directly under field conditions, it can be inferred indirectly
through the measurement of floral resource depletion. In this study, we
conducted a pollinator exclusion experiment to calculate nectar
depletion rates in summer across 16 grassland sites in the German
regions of Franconia and Saxony-Anhalt. Overall depletion rates were
estimated at 95% in Franconia and 79% in Saxony-Anhalt, indicating
strong nectar limitation and, by implication, competition among
pollinators. Despite being ubiquitous in our study regions, honey bees
were scarce at our sites at the time of nectar sampling. This
demonstrates that wild pollinators alone are capable of massive nectar
depletion, and the addition of managed honey bees to wild pollinator
communities may intensify already competitive conditions. Nevertheless,
the manifest diversity of the pollinator communities at our sites
indicates that other factors, such as non-trophic constraints or
temporal variation in food limitation, can mitigate competitive
exclusion despite immediate conditions of acute food scarcity.
Caliper, contrast enhanced-ultrasound (CEUS) or laser speckle contrast imaging (LSCI): techniques to follow mice melanoma growth
Authors: Clere Nicolas , Mellinger Adélie , Hersant Jeanne , Bourreau Clara , Lecoq Simon , Deveze Eva , Henni Samir
Published: October 2023

Metastatic melanoma is a cancer for which vascularization is not a
diagnostic criterion. The aim of this study was to evaluate the
applicabilities of laser speckle contrast imaging (LSCI) and contrast
enhanced ultrasound (CEUS) in a mouse-model. B16F10 cells were
xenografted to C57BL/6 mice. Mice were treated with anti-PD1 or 0.9%
NaCl and tumor volume was measured daily. CEUS and LSCI were performed
weekly. No difference in tumor growth or median survival were observed
between treated and no-treaated mice. No significant difference in tumor
volume measurement comparing caliper and CEUS was observed. LSCI and
CEUS analyses showed a decrease in tumor perfusion in both groups of
mice. Although both CEUS and LSCI are useful for measuring tumor volume,
LSCI appears to be more robust and effective for monitoring tumor
microcirculation. Non-invasive investigations are needed to better
predict tumor vascularization: CEUS and LSCI have a good applicability
in a mice model.
Global patterns of nuclear and mitochondrial genetic diversity in marine fishes
Authors: Clark Rene , Pinsky Malin
Published: October 2023

Genetic diversity is a fundamental component of biodiversity.
Examination of global patterns of genetic diversity can help highlight
mechanisms underlying species diversity, though patterns may differ
across the genome. Here, we compiled 6862 observations of genetic
diversity from 492 species of marine fish, assessed their associations
with macroecological drivers, and tested among hypotheses for diversity
gradients: the founder effect hypothesis, the kinetic energy hypothesis,
and the productivity-diversity hypothesis. We found that mitochondrial
genetic diversity followed geographic gradients similar to those of
species diversity, being highest near the equator, particularly in the
Coral Triangle, while nuclear genetic diversity did not follow clear
global patterns. Despite these differences, all genetic diversity
metrics were strongly correlated with chlorophyll-a concentration, while
mitochondrial diversity was also positively associated with sea surface
temperature. Our results provide support for the kinetic energy
hypothesis, which predicts that elevated mutation rates at higher
temperatures increase mitochondrial diversity, and the
productivity-diversity hypothesis, which posits that resource-rich
regions support larger populations with greater genetic diversity.
Overall, these findings reveal how environmental variables can influence
mutation rates and drift in the ocean, caution against using
mitochondrial macrogenetic patterns as proxies for nuclear DNA, and aid
in defining global gradients of genetic diversity.
Radna snaga iz Nezavisne Države Hrvatske za njemačku zrakoplovnu industriju
Authors: Barić Nikica
Published: October 2023

Tijekom Drugoga svjetskog rata veliki broj ljudi otišao je iz Nezavisne Države Hrvatske na rad u Njemački Reich. Dio njih otišao je u Njemačku dobrovoljno, a dio kao prisilna radna snaga. U sklopu te šire teme, ovaj prilog, uglavnom na temelju arhivskih izvora, opisuje kako je dio radne snage iz Nezavisne Države Hrvatske bio upućen na rad u njemačku zrakoplovnu industriju.
A Comparative Analysis of Individualism and Collectivism Effects on Customer Satisfaction in the Retail Sector: Examining Asian and Western Cultures
Authors: Abdul Halim Abdul Hamid , Abdul Ghani Wan Soraya Wan
Published: October 2023

Customer satisfaction is the result of a customer's assessment of how well a service has performed, stemming from the differences between their initial expectations and the actual service they have encountered. While various elements play a role in shaping customer satisfaction, numerous factors come into play. This study focuses on exploring cultural differences, considering the multicultural environment of Malaysia. This is particularly intriguing since businesses in Malaysia cater to both local and international customers from Asian and Western regions. The objective of this study is to examine the correlation between individualism and collectivism about customer service satisfaction, with a specific focus on the retail sector involving multinational brands and diverse customers. The utilization of Geert Hofstede's Dimension theory is justified as it is a widely recognized framework for cultural differences research. A quantitative methodology was employed, surveying 103 participants, with 51.5% originating from Asian cultures and 48.5% from Western cultures. The findings demonstrate that while both individualism and collectivism significantly influence customer service satisfaction in the retail sector, collectivism plays a more significant role in determining overall satisfaction levels. To enhance the understanding of this topic, it is suggested that future studies expand beyond the Klang Valley area and explore additional explanatory variables that consider the impact of cultural differences on customer satisfaction.
The Influence of Perceived Risk Factors on Online Purchase Intention among Millennials in Malaysia
Authors: Mahbob Nur Nadiah , Hasim Muhammad Asyraf , Ishak Mohd Fikri
Published: October 2023

This study investigates perceived risk factors that influence online purchase intention among Millennials in Malaysia. The study examined several predictor variables, namely financial risks, product risks, and non-delivery risks, whereas the result variable under investigation was online purchase intention. The study employs structured questionnaires verified for data collection through face and content validity. The data were analyzed using descriptive statistics through the Statistical Package for Social Sciences (SPSS) version 23. Multiple regression analysis was conducted to ascertain the association between the predictor factors and the outcome variable. The findings indicate a significant relationship between the predictor variables, namely financial risks, product risks, and non-delivery risks, and the outcome variable. The analysis shows that non-return risks exhibited the highest association with online purchase intention. The findings of this study offer significant contributions to the advancement of future research and the enhancement of online entrepreneurs' ability to optimize their online operations and give enhanced consumer value experiences.
Predictors of Purchase Decision on Products Advertised on WhatsApp: Perspectives from Postgraduate Students at Selected Universities in Lagos State, Nigeria
Authors:   Department of Data and Information Science Faculty of Multidisciplinary Studies University of Ibadan Ibadan, Nigeria, Ogunsola Kemi , Mohammed S.B.
Published: October 2023

This study identified social media commitment, normative and informational social influences, social interaction ties, trust in online vendors, and purchase intention as factors predicting purchasing decisions on products advertised on WhatsApp. Monthly upkeep, sex and age of postgraduate students were moderating variables in the study. A survey was conducted using an online questionnaire administered to 314 postgraduate students from three purposively selected universities - the University of Lagos, Lagos State University and Pan Atlantic University. Using a multistage sampling technique, a population of users of the WhatsApp social platform was selected from two homogenous faculties with 12 departments. The study applied descriptive statistical procedures to answer five research questions and linear regression analysis to test three hypotheses using SPSS version 26. Findings revealed that social interaction ties, normative social influence, trust in online vendors, monthly upkeep and sex significantly predicted postgraduate students' purchase decisions on products advertised on WhatsApp. It was recommended that business owners and marketers should intensify their efforts to advertise products on WhatsApp, and also ensure timely delivery of products and services. Keywords: E-commerce, Online advertisement, Postgraduate students’ purchase decision, Predictors, Products, Social media, WhatsApp, Lagos State, Nigeria Journal Reference Format: Ogunsola K. & Mohammed S.B. (2023): Predictors of Purchase Decision on Products Advertised on WhatsApp: Perspectives from Postgraduate Students at Selected Universities in Lagos State, Nigeria. Social Informatics, Business, Politics, Law, Environmental Sciences & Technology Journal. Vol. 9, No. 2. Pp 43-64. dx.doi.org/10.22624/AIMS/SIJ/V9N2P3. www.isteams/socialinformaticsjournal
Access to Livelihood Capital and Food Security Status as Correlates to Empowerment Among Women on Irrigation Schemes in North-West Province, South Africa
Authors: Oladele Oladimeji Idowu
Published: October 2023

This paper examines the empowerment, access to livelihood capital, and food security status among women in irrigation Schemes in North-West Province, South Africa. A simple random sampling technique was used to select 84 women farmers. Data was obtained with a female empowerment agricultural index questionnaire and analyzed with frequency distribution, percentages, mean and standard deviation, and Chi-Square. The results on the indices of empowerment show that women are disempowered in the use of income and access to productive capital and credit, but are empowered in leadership and decision-making. The Chi-square analysis reveals that significant relationships exist between levels of empowerment, livelihood capital, and food security. The paper concludes that there is a need to modify intervention programs if empowerment is to be attained.
Alterations in adipose tissue distribution, cell morphology and function mark primary insulin hypersecretion in youths with obesity
Authors: Tricò Domenico , Chiriacò Martina , Nouws Jessica , Vash-Margita Alla , Kursawe Romy , Tarabra Elena , Galderisi Alfonso , Natali Andrea , Giannini Cosimo , Hellerstein Marc , Ferrannini Ele , Caprio Sonia
Published: October 2023

Excessive insulin secretion independent of insulin resistance, defined as primary hypersecretion, is associated with obesity and an unfavorable metabolic phenotype. We examined the characteristics of the adipose tissue in youths with primary insulin hypersecretion and the longitudinal metabolic alterations influenced by the complex adipo-insular interplay. In a multiethnic cohort of non-diabetic adolescents with obesity, primary insulin hypersecretors had enhanced model-derived β-cell glucose sensitivity and rate sensitivity, but worse glucose tolerance, despite similar demographics, adiposity, and insulin resistance measured by both OGTT and euglycemic-hyperinsulinemic clamp. Hypersecretors had greater intrahepatic and visceral fat depots at abdominal MRI, hypertrophic abdominal subcutaneous adipocytes, higher FFA and leptin serum levels per fat mass, and faster in vivo lipid turnover assessed by a long-term 2H2O labeling protocol. At 2-year follow up, hypersecretors had greater fat accrual and 3-fold higher risk for abnormal glucose tolerance, while individuals with hypertrophic adipocytes or higher leptin levels showed enhanced β-cell glucose sensitivity. Primary insulin hypersecretion is associated with marked alterations in adipose tissue distribution, cellularity, and lipid dynamics, independent of whole-body adiposity and insulin resistance. Pathogenetic insight into the metabolic crosstalk between β-cell and adipocyte may help identify individuals at risk for chronic hyperinsulinemia, body weight gain, and glucose intolerance.
Single-cell transcriptome profiling of pancreatic islets from early diabetic mice identifies Anxa10 for Ca2+ allostasis toward β-cell failure
Authors: Motomura Kaori , Matsuzaka Takashi , Shichino Shigeyuki , Ogawa Tatsuro , Pan Hao , Nakajima Takuya , Asano Yasuhito , Okayama Toshitsugu , Takeuchi Tomoyo , Ohno Hiroshi , Han Song-iee , Miyamoto Takafumi , Takeuchi Yoshinori , Sekiya Motohiro , Sone Hirohito , Yahagi Naoya , Nakagawa Yoshimi , Oda Tatsuya , Ueha Satoshi , Ikeo Kazuho , Ogura Atsushi , Matsushima Kouji , Shimano Hitoshi
Published: October 2023

Type 2 diabetes (T2D) is a progressive disorder denoted by hyperglycemia and impaired insulin secretion. Although a decrease in β-cell function and mass is a well-known trigger for diabetes, the comprehensive mechanism is still unidentified. Here we carried out single-cell RNA sequencing (scRNA-seq) of pancreatic islets from prediabetic and diabetic db/db mice, an animal model of T2D. We discovered a diabetes-specific transcriptome landscape of endocrine and nonendocrine cell types with subpopulations of β and α cells. We recognized a new prediabetic gene, Anxa10, that was induced by, and regulated Ca2+ influx from metabolic stresses. Anxa10-overexpressed β cells displayed suppression of glucose-stimulated intracellular Ca2+ elevation and potassium-induced insulin secretion. Pseudotime analysis of β cells predicted this Ca2+-surge responder-cluster proceeded to mitochondria dysfunction and also endoplasmic reticulum stress. Other trajectories comprised dedifferentiation and transdifferentiation, emphasizing acinar-like cells in diabetic islets. Altogether, our data provides a new insight into Ca2+ allostasis and β cell failure processes.
Foreign Fighters in Ukraine: The Brown–Red Cocktail
Authors: Åtland Kristian
Published: October 2023

Kacper Rekawek’s nye bok Foreign Fighters in Ukraine: The Brown–Red Cocktail utgjør et viktig supplement til den eksisterende litteraturen om politisk ekstremisme og fenomenet fremmedkrigere. Forfatteren utviser stor originalitet i valget av case, og boken gir et unikt innblikk i miljøer som mange av oss bare har anekdotisk kunnskap om.
 
Kacper Rekawek’s new book Foreign Fighters in Ukraine: The Brown–Red Cocktail is an important supplement to the existing research literature on political extremism and the phenomenon of foreign fighters. The author shows great originality in his choice of cases, and the book provides unique insights into milieus about which many of us have only anecdotal knowledge.
Design and Construction of a Turbine Pump as Laboratory Scale Micro Hydro Electricity Learning Media
Authors: Gunarto  , Irawan Doddy , Julianto Eko
Published: October 2023

Lack of understanding of students about renewable energy can be produced from pumps, namely electrical energy. The energy produced by this pump is beneficial for rural areas that do not have electricity.  The purpose of this research is to modify the pump as a turbine for a micro-hydro power plant which can be used by students of the Mechanical Engineering Department, the University of Muhammadiyah Pontianak as learning media in the field of fluid machines and laboratory-scale energy conversion machines. The research subjects were 15 students of mechanical engineering and pumps that were converted into turbines to generate electricity. The data collected first comes from the performance test of a pump that has been converted into a pump as a turbine. Further data was obtained from students through a pretest with a conceptual type of pump used as a power plant. Then after the pretest, students were treated by using and operating a pump as a turbine as a learning media. From this media, students must also explain the concept and how the pump as a turbine can produce electrical energy in writing. The student's written results obtained were analyzed to determine the effect of the pump as turbine model on students' understanding of conceptual analysis. The result of this research is a pump that has been converted into a pump as the turbine. In addition, as a simple practical tool to test the performance of the pump as a turbine. There was an increase in students' understanding in terms of the ability to describe the concept of power generation sources from pumps and analyze the process and workings of the pump as a turbine to produce electrical energy.
Reduksi Kadar Amoniak Limbah Cair Industri Karet pada Airlift Bioreaktor dengan Bakteri Brevundimonas diminuta
Authors: Nurisman Enggal , Pratama Alhafiz , Rizki Suci Indah , Rosmania
Published: October 2023

Perkembangan industri karet yang semakin pesat saat ini menimbulkan dampak terhadap aspek pengelolaan limbah cair industri. Salah satu unsur pencemar yang sering kali terkandung di dalam limbah industri karet adalah amoniak. Amoniak beracun, membahayakan kemampuan ekosistem akuatik untuk bertahan hidup. Penelitian ini menguji kemampuan isolat bakteri Brevundimonas diminuta dalam menurunkan kadar amoniak pada limbah cair pabrik karet. Proses pengolahan secara biologis menggunakan airlift bioreaktor yang telah dirancang sedemikian rupa dengan rasio inokulum bakteri Brevundimonas diminuta sebanyak 5%. Data berupa DO dan populasi bakteri diobservasi berturut-turut menggunakan DO meter mikroskop stereo, sedangkan kadar amoniak diuji dengan metode nessler. Aliran udara pada bioreaktor disuplai oleh aerator dengan laju aliran bervariasi (L/menit): 1,5; 3; dan 4.5 dan waktu aerasi  bervariasi selama (jam): 1,5; 3; 4,5; dan 6. Semakin lama waktu aerasi yang dilakukan maka nilai DO dan reduksi kadar amoniak akan semakin meningkat pula. Berdasarkan hasil analisis, bahwa B. diminuta dapat mereduksi kadar amoniak pada limbah cair industri karet dengan kondisi optimum penurunan kadar amoniak sebesar 85,05% dari 4,28 mg/L hingga 0,64 mg/L pada variasi laju alir udara 3 L/menit selama 4,5 jam.
Komparasi Model Gerak Brown Geometrik Termodifikasi dan Model Kecerdasan Buatan untuk Prediksi Harga Saham Sektor Kesehatan di Indonesia
Authors: Sari RR. Kurnia Novita , Sutisna Wilan , Wororomi Martha Joanadiva Majesty , Tjahjono Venansius Ryan
Published: October 2023

Selama pandemi COVID-19 di Indonesia, pergerakan saham di berbagai sektor mengalami dampak yang signifikan. Akan tetapi, harga saham pada sektor kesehatan mengalami pertumbuhan sebesar 3,71%. Penelitian ini bertujuan menerapkan model Gerak Brown Geometrik yang Termodifikasi (MBM) dan model kecerdasan buatan untuk memprediksi pergerakan penutupan harga pada data harga penutupan saham PT. Kalbe Farma Tbk. Lalu, hasil prediksi dibandingkan untuk mengetahui model terbaik. Pada MBM, dilakukan konstruksi tren dan volatilitas yang memuat variabel waktu. Hasil ini kemudian dibandingkan dengan model kecerdasan buatan, yaitu Light Gradient Boosting Machine (LightGBM) dan Multi Layer Perceptron (MLP). Selain itu, pada konstruksi model kecerdasan buatan, dilakukan pendekatan baru yang mana input dari model tersebut adalah tanggal dan titik urutan deret waktu. Hasil simulasi menunjukkan bahwa MBM mampu memberikan nilai MAPE yang lebih kecil dibandingkan GBM. Akan tetapi, model kecerdasan buatan, khususnya LightGBM, masih lebih unggul bila digunakan untuk memodelkan harga saham sektor kesehatan. Model ini memberikan nilai MAPE dibawah 1%.
Sintesis Metil Ester Sulfonat Berbasis Minyak Biji Kelor (Moringa oliofera L.) Pada Variasi Waktu dan Suhu Sulfonasi
Authors: Murniati  , Handayani Sri Seno , Suhendra Dedy , Gunawan Erin Ryantin , Ramdani Nanila
Published: October 2023

Penggunaan surfaktan sintetis berbasis petrokimia memiliki efek negatif pada kesehatan manusia dan lingkungan karena bersifat korosif dan beracun, menyebabkan pemanasan global, dan kelangkaan sumber daya fosil. Metil ester sulfonat (MES) merupakan salah satu jenis surfaktan anionik yang banyak diaplikasikan dalam berbagai industri. Bahan baku pembuatan surfaktan berasal dari minyak bumi yang tidak dapat diperbaharui dan tidak ramah lingkungan, sehingga diperlukan bahan baku alternatif lain yaitu dari minyak biji kelor. Penelitian ini bertujuan untuk mensintesis MES dari minyak biji kelor (Moringa oliofera L.) pada variasi suhu (70, 80, dan 90) 0C dan waktu reaksi (3, 4 dan 5) jam, serta mengkarakterisasi MES menggunakan spektrofotometer FTIR pada kondisi optimum. Jenis penelitian ini adalah penelitian eksperimental laboratorium. Hasil penelitian menunjukkan bahwa MES dapat sintesis dari minyak biji kelor pada kondisi optimum suhu 80 0C dan waktu reaksi 4 jam. Produk MES berwarna putih kekuningan, pH 7 dan yield 66,72 %. Karakterisasi FTIR menunjukkan pita serapan S=O sulfonat yang menandakan terbentuknya produk MES.
Genetic Diversity and Phylogeny of Alocasia longiloba Miq. Indonesia Accessions Based on trnL-F Intergenic Spacer Region
Authors: Asih Ni Putu Sri , Purnomo  , Daryono Budi Setiadi
Published: October 2023

Alocasia longiloba Miq. is a member of the Araceae family, which was complex and has diverse leaf shapes, color, and venation. Studies on the diversity of A. longiloba focused mostly on morphological characteristics, while the genetic diversity of this species has never been published. Alocasia longiloba Miq. belongs to the Araceae family and has a variety of leaf shapes, colors, and venations. This research aims to determine the variation and relationshipgenetic diversity and phylogeny of the Indonesian accession of A. longiloba based on molecular approaches using trnL-F IGS region. A total of 20 accesses of A. longiloba from Indonesia were sequenced and one Alocasia suhirmaniana, along withthen together with 12 11 DNA sequences of A. longiloba and Amorphophallus muelleri registered at the NCBI, were aligned with the Mesquite software. Genetic diversity were examined using DnaSP ver. 6.12.03. The phylogenetic tree was reconstructed by MEGA 11 using the Maximum Parsimony method and the Tree-Bisection-Regrafting (TBR) algorithm. Among 389 site recorded, 356 site were invariable, 5 site were variable and 28 site were gaps or missing data. This genetic variation in the form of insertion, deletion, transition, and transversion and  the deletion event has received the most contributions.  Reconstruction of the phylogenetic tree resulted in A. longiloba being polyphyletic. The use of cpDNA with the trnL-F IGS region of IGS could not show the relationship between the Indonesian accession of intraspecies A. longiloba, so further research is needed in other areas regions of chloroplast and nuclear DNA.
Fabrikasi dan Karakterisasi Tinta Bubuk dari Karbon Aktif Batang Kelapa Sawit untuk Aplikasi Printer Laser
Authors: Ginting Delovita , Syahputra Romi Fadli , Lubis Viviana , Yani Adila Fitri
Published: October 2023

Tinta bubuk merupakan komponen utama dari proses pencetakan printer laser. Tinta bubuk pada dasarnya merupakan campuran pigmen atau pewarna, bubuk logam,dan polimer. Penelitian ini bertujuan memanfaatkan batang kelapa sawit sebagai karbon aktif untuk zat pewarna pada tinta bubuk yang diaplikasikan pada printer laser. Proses pembuatan karbon aktif meliputi preparasi sampel, karbonisasi, aktivasi kimia, dan aktivasi fisika. Karbon aktif dilakukan pengujian kadar air, kadar zat menguap, kadar abu, kadar karbon terikat, dan uji distribusi partikel size. Pembuatan tinta bubuk pada penelitian ini terdiri dari karbon aktif (sebagai zat pewarna), ferrite powder (zat logam), dan styrene acrylic (polimer). Penelitian ini menggunakan perbandingan karbon aktif dan ferrite powder 4 : 1. Penelitian ini ingin melihat kualitas dari tinta bubuk dengan menggunakan pewarna karbon aktif batang kelapa sawit dengan memvariasikan jumlah styrene acrylic. Jumlah variasi styrene acrylic yang ditambahkan pada pembuatan tinta bubuk yaitu TB1 (48:12:40), TB2 (40:10:50), dan TB3 (32:8:60). Tinta bubuk dilakukan pengujian distribusi partikel size, uji SEM, analisis citra, dan kualitas cetak menggunakan printer laser. Hasil penelitian karbon aktif yang dihasilkan memiliki kadar air 2%, kadar zat menguap 15%, kadar abu 23%, dan kadar karbon terikat 40%. Uji distribusi ukuran partikel menunjukkan ukuran 0.115 µm hingga 592.387 µm. Pengujian analisis citra tinta bubuk menggunakan ImageJ dengan perbandingan bervariasi, TB3 memiliki sedikit elemen putih dibandingkan TB1 dan TB2. Berdasarkan hasil analisis citra, nilai gray rata-rata TB3 mendekati nilai tinta bubuk komersial.
Biomassa, Potensi Cadangan Karbon dan Serapan Karbon Pada Hutan Kota
Authors: Irvianty  , Siregar Zuriana , Defira Cut Nanda
Published: October 2023

Pemerintah berkomitmen untuk menurunkan emisi CO2 yang terus bertambah dalam kurun waktu 7 tahun terakhir. Keberadaan hutan kota tidak hanya berfungsi sebagai tempat rekreasi tetapi juga berperan penting dalam menyerap dan menyimpan karbon di dalam biomassa. Penelitian ini bertujuan untuk menganalisis  biomassa, potensi cadangan karbon dan serapan karbon pada hutan kota. Metode yang digunakan adalah metode non-destructive (tanpa pemanenan). Pengumpulan data pada  Hutan kota yang memiliki luas wilayah lebih dari 1 ha dilakukan dengan menggunakan metode plot yang diletakkan secara purposive. Luas petak yang digunakan 20mx20m. Penentuan jumlah petak dilakukan dengan mengambil 10% dari luasan kawasan masing-masing hutan kota. Pengumpulan data pada hutan kota yang memiliki luas wilayah kurang dari 1 ha dilakukan dengan sensus. Kriteria tegakan atau pohon yang didata adalah tegakan dengan DBH lebih dari sama dengan 10 cm. Data yang diambil meliputi diameter pohon, tinggi pohon dan jenis pohon. Hasil analisis biomassa pohon pada hutan kota adalah 110,79 ton/ha, dengan total cadangan karbon sebesar 55,40 ton/ha dan serapan CO2 203,36 ton/ha. Luas hutan kota yang dikaji secara keseluruhan adalah 8,71 ha sehingga diperoleh total biomassa di hutan kota adalah 964,98 ton, total cadangan karbon sebesar 482,53 ton, dan serapan CO2 sebesar 1771,27 ton.
Flood Susceptibility Index Analysis Using Overlay Method and GIS-based
Authors: Irmawati Viviana , Cahyono Ongko , Mujiyo  , Maro'ah Siti , Istiqomah Nanda Mei , Romadhon Muhammad Rizky
Published: October 2023

High rainfall caused the overflow of the Wiroko river, causing flooding in Nguntoronadi. This study aims to analyze flood potential, provide evaluation and recommendations on areas that have high flood suscetibility. Type of research is quantitative descriptive by using the overlay method of scoring land characteristics that affect environmental conditions.  Land characteristics are rainfall, altitude, slope, soil type and land use. The characteristics of the land  are overlayed using the ArcGIS application to determine a map of flood susceptibility index, and the data were analyzed using descriptive methods. The result found three categories of flood susceptibility indexes: low, medium, and high. The study revealed a total area flood susceptibility of 6566.52 ha, with 33.79% having high flood susceptibility. The potential for high flood vulnerability is found in lowland, high rainfall and open land use. Areas which has a high flood susceptibility by improving river flow, drainage and terraces in rice fields. The high flood susceptibiity caused by rainfall, lowland and low vegetation as well as high human populations.
Aplikasi Matriks untuk Meningkatkan Keamanan Proses Kriptografi Caesar, Vernam, dan Hill Cipher
Authors: Sylviani Sisilia , Kartiwa Alit , Permana Fahmi Candra , Hadi A.N. , Kadir M.P , Wilopo R.
Published: October 2023

Dalam era smart society 5.0 ini, kemajuan teknologi informasi dan komunikasi berkembang sangat pesat. Seiring dengan hal tersebut, resiko terjadinya gangguan informasi, seperti penyalahgunaan informasi oleh pihak yang tidak berwenang, juga meningkat. Dalam artikel ini dibahas kombinasi metode Hill Cipher, Vernam Cipher, dan Caesar Cipher sebagai salah satu upaya untuk meningkatkan kemanan dalam penyampaian pesan rahasia.  Metode Hill Cipher, Vernam Cipher, dan Caesar Cipher tersebut memiliki kelebihan dan kelemahannya masing-masing. Untuk itu dilakukan modifikasi dengan mengkombinasikan ketiga metode tersebut secara bersamaan, dengan tujuan untuk menimalisasi kelemahan dan meningkatkan keamanan dalam penyampaian pesan. Penelitian yang dilakukan ini termasuk ke dalam jenis penelitian kualitatif, dengan menggunakan instrumen eksperimen atau percobaan. Adapun desain penelitiannya adalah dengan melakukan Kombinasi proses kriptografi dengan ketiga metode tersebut yang di dalamnya melibatkan matriks. Hasil yang diperoleh adalah tingkat kerahasiaan pesan yang dikirim lebih tinggi  dan kelemahan dari masing-masing metode dapat diminimalisir dibandingkan dengan penggunaan ketiga metode tersebut secara berdiri sendiri.
Model Analisis Machine Learning dengan Pendekatan Deep Learning dalam Penentuan Kolektabilitas
Authors: Yenila Firna , Marfalino Hari , Defit Sarjon
Published: October 2023

Penelitian ini bertujuan untuk melakukan proses prediksi dan klasifikasi dalam pemberian status pinjaman dengan mengembangkan sebuah model analisis menggunakan Machine Learning (ML). Pembelajaran ML menggunakan pendekatan Deep Learning (DL) dengan beberapa metode diantaranya K-Means Cluster, K-Nearest Neighbor (K-NN) dan Decision Tree (DT). Metode K-Means mampu melakukan clusterisasi terhadap pengelompokan data nasabah. Kinerja KNN juga dapat berkontribusi untuk memberikan hasil prediksi yang tepat dan akurat. Demikian juga dengan performa DT yang mampu melakukan klasifikasi dengan menghasilkan knowladge based dalam penentuan status pinjaman. Adapun variabel analisis yakni usia, status perkawinan, jumlah tanggungan, status tempat tinggal, pendapatan. Hasil penelitian ini menyajikan bahwa keluaran prediksi K-NN memberikan ketepatan dengan akurasi sebesar 90%. Hasil DT juga telah mampu menyajikan knowladge based dalam bentuk pohon keputusan status pinjaman. Dengan hasil tersebut maka penelitian ini secara keseluruhan dapat memberikan kontribusi bagi pihak UPK dalam proses manajemen terkhusus dalam penentuan status peminjaman. Penelitian ini perlu dilakukan untuk memberikan kemudahan dalam memberikan kredit yang tepat sesuai dengan ketentuan yang telah ditetapkan.
Analysis of the Hydrodynamic Properties of the Fissure Aquifers of the Black Volta Catchment in Ivory Coast
Authors: Marc Youan Ta , Armel Kouame Kouadio , Bertrand Akokponhoue Houngnigbo , Carine Njeugeu Mbiafeu Amandine
Published: October 2023

The present study aims to analyze the productivity of aquifers in the Ivorian part of the Black Volta basin. It proposed to characterize the intrinsic hydrodynamic parameters of the productivity and to know the influence of these on the productivity of the drillings. The hydraulic parameters of the catchment structures and the pumping test sheets were used to determine the hydrodynamic properties through a methodological approach integrating Cooper Jacob's empirical formulas and automated calculations using the Pumping Interpretation Assistance Tool (OUAIP). A standardized principal component analysis (ACPN) was used to analyze the correlation of the different parameters. The results obtained range over several orders of magnitude. The values of the specific flow oscillate between 0. 01 and 4.87m²/h while the transmissivity varies between 1.25E-07 and 7.34E-03 m².s-1. As for the critical flow, it is between 0.869 and 26.6 m3/h. These values indicate that the aquifers generally have low specific flow rates, but fairly good transmissivity. The Normalized Principal Component Analysis (ACPN) allowed to highlight the different productivity factors of the aquifers in the region: water level variation, and hydraulic role of fractures. It also showed the influence of the depth of the drilling on productivity. These results contribute to the knowledge of the structure and hydrodynamic functioning of the aquifers of the basin basement. They show the structural links between hydrodynamics and aquifer productivity.
A digital learning – teaching platform experienced during the pandemic: an educational project based on ahi competence (aydep)
Authors:   Kırşehir Ahi Evran University, Kırşehir (Turkey). E-mail: rabiasarica@gmail.com, SARICA Rabia
Published: October 2023

In the spring of 2020, education was suspended in Turkey, due to the pandemic. In this global chaos, many educational institutions, including universities, continued their education in the form of distance education. Kırşehir Ahi Evran University also continued its education with a learning management system (LMS) called AYDEP.The aim of this study is to reveal and examine opinions of participants about AYDEP they have experienced during the pandemic. The participants are teacher candidates studying at Ahi Evran University. The study was designed as a qualitative research. The data were collected through semi-structured interviews and analyzed using content analysis. As a result of the analysis, opinions of the participants were examined under four main headings. These are as follows: 1) General thoughts and evaluations of participants about AYDEP system, 2) Participants' thoughts and evaluations about the education provided with AYDEP, 3) The situations perceived as advantages and disadvantages by the participants regarding the education provided with AYDEP, and 4) Participants' thoughts and evaluations on distance education carried out with AYDEP and face-to-face education. According to the findings, AYDEP is recommended to be developed in terms of elements such as technical features, pedagogical elements, cooperation and communication, technical infrastructure & access and content etc.
Teaching geometry through didactical situations: the case of the triangle inequality
Authors:   Zonguldak Bülent Ecevit University, Faculty of Education, Department of Mathematics and Science Education, Zonguldak (Turkey). E-mail: muratgenc@beun.edu.tr, GENC Murat , ERGAN Semra ,   Ministry of Education, Zonguldak (Turkey). E-mail: semraergan_91@hotmail.com
Published: October 2023

This paper aims to discuss the use of Brousseau’s Theory of Didactical Situations in mathematics (TDS) for eighth-graders to explore the concept of triangle inequality in Euclidean geometry. Data sources included observation notes, video recordings of lessons, and students’ written work. Data analysis was done through a deductive content analysis approach that utilized the conceptual framework based on Brousseau’s notion of didactical situations. Findings revealed that student behaviors that were expected to take place through situations occurred at every phase as stated in the theory. Mathematical ideas leading up to the construction of new knowledge were gradually formulated and justified as stages progress. Students worked out different methods of evaluation to solve an open-ended exploratory task and defended them in a way that invited other students to implement their chosen strategies. They developed their implicit informal knowledge by building on their thinking and the thinking of others through situations. All these results highlight how important it is to use didactical situations to pave the way for learning to learn, as it not only facilitates the purposeful exchange of ideas through whole-class discussion that ensures a common understanding of mathematical ideas but also allows students to create their own learning adventures.
Social Anxiety from an Attachment Theory Perspective: The Mediating Role of Early Maladaptive Schema Domains and Rejection Sensitivity
Authors:   Department of Psychology, Faculty of Humanities and Social Sciences, Izmir Bakircay University, Izmir, Turkey, BINTAŞ-ZÖRER Pelin , DIRIK Gülay ,   Department of Psychology, Faculty of Letters, Dokuz Eylul University, Izmir, Turkey
Published: October 2023

Social anxiety is a common problem. Several factors play a role in the development and maintenance of social anxiety. Since relationship with parents is specifically an important factor, it is important to examine social anxiety from an attachment theory perspective. Studies indicate that early maladaptive schemas and rejection sensitivity may play a role in the relationship between attachment pattern and psychological distress. Therefore, the aim of the present study is to examine the mediating role of early maladaptive schema domains and rejection sensitivity in the relationship between internal working models of attachment and social anxiety. The sample of the study consisted of 557 university students (199 male, 358 female) between the ages of 17-27 (M = 20.69, SD = 1.79). Liebowitz Social Anxiety Scale, Relationship Scales Questionnaire, Young Schema Questionnaire-Short Form 3, and Rejection Sensitivity Questionnaire were administered to the participants. Results of the mediation analysis with Bootstrapping showed that Impaired Autonomy schema domain and rejection sensitivity mediated the relationships between attachment self-model and social anxiety. Moreover, schema domains of Impaired Autonomy, Impaired Limits and Unrelenting Standards, and rejection sensitivity mediated the relationship between attachment other-model and social anxiety. The current study may contribute to the literature by providing an understanding of how the relationship between attachment and social anxiety may emerge. Clinicians aiming to increase clients’ functionality and quality of life should/could focus on their clinical practice on the above early maladaptive schema domains and rejection sensitivity.
PENINGKATAN LITERASI ANAK SEKOLAH DASAR MELALUI CERITA LEGENDA NUSANTARA DENGAN ANALISIS FISHBONE
Authors: Darodjat Rafan , Suryamah Aam , Maulana Mursal
Published: October 2023

Perkembangan zaman membuat adanya perubahan nilai sosial, diakibatkan oleh kemajuan teknologi informasi dan modernisasi. Pengaruh perkembangan tersebut mengakibatkan lunturnya nilai-nilai budaya dan kurang mengetahui kekayaan sastra yang dimiliki bangsa Indonesia, yaitu cerita legenda. Peningkatan literasi harus diawali sejak dini sebagai upaya peningkatan minat baca dan kemampuan mengolah informasi menjadi bermanfaat. Pengenalan cerita legenda sebagai gerbang untuk menarik minat baca dan penerapan analisis fishbone sebagai metode yang dapat digunakan dalam memahami konteks suatu bacaan. Hasil dari kegiatan pengabdian ini, bahwasanya pengenalan cerita legenda harus diperkenalkan sejak dini sebagai upaya pengurangan terhadap aktivitas penggunaan gadget dan peningkatan literasi bagi anak usia sekolah dasar.
EDUKASI PEMANFAATAN MEDIA SOSIAL DALAM RANGKA PELESTARIAN SENI LAIS BAGI SISWA SMPN 1 RAJAPOLAH KECAMATAN RAJAPOLAH KABUPATEN TASIKMALAYA
Authors: Septiani Ayu , Afsari Asri Soraya
Published: October 2023

Saat ini Indonesia memasuki peradaban 4.0 yang ditandai dengan bergantungnya masyarakat pada internet atau lebih dikenal sebagai era digital. Periode ini ditandai pula dengan generasi muda yang sangat lekat dengan media sosial. Kelekatan  tersebut dapat dimanfaatkan sebagai upaya pelestarian kesenian oleh generasi muda. Generasi muda yang menjadi sasaran dalam kegiatan PPM ini adalah siswa SMPN 1 Rajapolah. Adapun kesenian yang dimaksud dalam kegiatan ini yaitu Seni Lais yaitu kesenian dalam bentuk akrobatik yang mengandalkan kemampuan fisik. Adapun tujuan dari kegiatan ini yaitu agar para siswa mengetahui dan dapat melestarikan Seni Lais dengan mempelajari Seni Lais dan memanfaatkan media sosial yang saat ini sangat jarang peminatnya. Hasil dari kegiatan ini yaitu para siswa antusias menyimak penjelasan dari narasumber terutama ketika narasumber menampilkan gerakan-gerakan Seni Lais dan bersedia memanfaatkan media sosial sebagai media pelestariannya. Kegiatan ini menggunakan metode pendidikan masyarakat berupa penyuluhan yang bertujuan meningkatkan pemahaman masyarakat. Berkaitan dengan kegiatan ini pemahaman Siswa SMPN 1 Rajapolah tentang pelestarian Seni Lais melalui media sosial Instagram dan Twitter. Adapun artikel ini menggunakan metode kualitatif. Simpulan dari artikel ini yaitu perlu adanya pelatihan secara berkelanjutan bagi para siswa SMPN 1 Rajapolah khususnya Seni Lais.
PEMBELAJARAN DAN PELATIHAN SENI TARI TUNGGUL KAWUNG DI KOTA BOGOR SEBAGAI PELESTARIAN BUDAYA SUNDA
Authors: Sofyan Agus Nero , Permadi R.Yudi , Fahrullah Ace , Nugraha Tubagus Chaeru
Published: October 2023

Pengabdian kepada masyarakat ini berjudul “Pembelajaran dan Pelatihan Seni Tari Tunggul Kawung di Kota Bogor Sebagai Pelestarian Budaya Sunda”. Program ini bertujuan meningkatkan kesadaran masyarakat akan nilai pengetahuan seni tari tradisional di Kota Bogor dalam melestarikan budaya Sunda, khususnya di kalangan pelajar dan kelompok pemuda. Pengabdian kepada masyarakat ini diselenggarakan dengan menggunakan metode penyuluhan seni tari Tunggul Kawung di Kota Bogor. Dalam implementasinya, pengabdian ini bekerja sama dengan karang taruna dan pemerintah setempat. Adapun format ceramah dan tanya jawab merupakan pendekatan yang digunakan dalam pengabdian ini. Seni tradisional leluhur masyarakat Kota Bogor yaitu seni tari Tunggul Kawung menjadi materi yang ditawarkan dalam pengabdian masyarakat ini. Sumber data utama dan sekunder dalam penelitian ini meliputi tinjauan pustaka dan sumber otoritatif pada pokok bahasan seni tari Tunggul Kawung. Hasil dari pengabdian ini adalah masyarakat Kota Bogor dapat terus mengamalkan dan melestarikan seni tari Tunggul Kawung, sehingga mampu menjadi kebanggaan masyarakat dan menjadi ikonik seni budaya tari tradisional warisan leluhur yang lahir serta berkembang di Kota Bogor.
“PEMANFAATAN MEDIA SOSIAL DALAM MENINGKATKAN PEREKONOMIAN MASYARAKAT DALAM PENCAPAIAN SDG’s DI DESA SEDERHANA MUARA GEMBONG”
Authors: Yanis Fauziah , Prasetyo Sisman , Lukiyana Lukiyana , Ahmad Masnia , Saidah Andi , Trijayanto Danang , Kamaruddin Muhammad Junaid
Published: October 2023

Sektor ekonomi memegang peranan penting dalam era globalisasi. Pada era globalisasi perkembangan teknologi bertumbuh dengan cepat, pemasaran yang semula tradisional beralih ke media online (digital), sehingga menimbulkan persaingan yang ketat dalam sektor pertumbuhan usaha. Ketidaktahuan masyarakat terkait penjualan secara online menjadi kendala tersendiri, dikarenakan masyarakat Desa Sederhana Muara Gembong tidak dapat memanfaatkan teknologi digital secara maksimal. Hal ini menimbulkan kesempatan dalam mengembangkan usaha bisnis menjadi terhambat. Melihat masalah yang ada, Tujuan dari pengabdian ini adalah untuk mensosialisasikan pemanfaatan media sosial seperti WhatsApp, Instagram, facebook, twitter, TikTok sebagai langkah pemasaran online untuk memecahkan permasalahan yang dihadapi, Target program ini adalah adanya peningkatan pengetahuan terkait pemanfaatan media social dan kemampuan dalam membangun kreatifitas melalui konten pemberitaan. Metode pelaksanaan kegiatan pengabdian masyarakat dilakukan dengan memberikan sosialisasi materi pengenalan pengatahuan dalam pemanfaatan media sosial baik secara efektif dan efisien dalam meningkatkan perekonomian masyarakat. Hasil kegiatan memperlihatkan antusias para masyarakat yang ikut hadir. Sejak awal memerhatikan dan mengikuti semua rangkaian acara hingga selesai dan aktif memberikan beberapa pertanyaan. Kegiatan ini juga memberikan dampak positif yang signifikan pada pencapaian beberapa Tujuan Pembangunan Berkelanjutan (Sustainable Development Goals/SDGs) di tingkat desa yaitu pertumbuhan ekonomi yang inklusif dan berkelanjutan
Forecasting wildfire hazard across northwestern south America
Authors: Markos Andrea , Matt Jolly William , Alvarado Ernesto , Podschwit Harry , Barreto Sebastian , Toban Catherine , Ponce Blanca , Aliaga-Nestares Vannia , Rodriguez-Zimmermann Diego
Published: October 2023

Fire hazard is often mapped as a static conditional probability of fire characteristics’ occurrence. We developed a dynamic product for operational risk management to forecast the probability of occurrence of fire radiative power in the locally possible near-maximum fire intensity range. We applied standard machine learning techniques to remotely sensed data. We used a block maxima approach to sample the most extreme fire radiative power (FRP) MODIS retrievals in free-burning fuels for each fire season between 2001 and 2020 and associated weather, fuel, and topography features in northwestern south America. We used the random forest algorithm for both classification and regression, implementing the backward stepwise repression procedure. We solved the classification problem predicting the probability of occurrence of near-maximum wildfire intensity with 75% recall out-of-sample in ten annual test sets running time series cross validation, and 77% recall and 85% ROC-AUC out-of-sample in a twenty-fold cross-validation to gauge a realistic expectation of model performance in production. We solved the regression problem predicting FRP with 86% r2 in-sample, but out-of-sample performance was unsatisfactory. Our model predicts well fatal and near-fatal incidents reported in Peru and Colombia out-of-sample in mountainous areas and unimodal fire regimes, the signal decays in bimodal fire regimes.
La tecnología educativa hoy
Authors: Sánchez Rivas Enrique , Colomo Magaña Ernesto , Sánchez Vega Elena , Cívico Ariza Andrea
Published: October 2023

Las tecnologías nos permiten desarrollar procesos educativos más dinámicos, motivadores y con infinitas posibilidades para la consecución de competencias, destrezas y/o habilidades de carácter técnico, instrumental y pedagógico en el alumnado. Por igual, la competencia digital docente se ha convertido en uno de los retos de la formación inicial y continua del profesorado. Un espíritu innovador, flexible ante la realidad y consciente de la importancia de las TIC, se vehiculan como ingredientes para un desempeño satisfactorio del ejercicio docente en pleno siglo XXI.