bluuebunny/crossref_metadata_2025 huggingface dataset:
Organometalik Bakır Kompleksinin Spektroskopik Analizi, Kuantum Kimyasal Hesaplamaları ve Moleküler Kenetleme Çalışmaları
Authors: Çayli Mert , Güzel Enis , Macit Mustafa , Yavuz Metin
Published: December 2024

Bu araştırmada, yeni bir bileşik olan Bis{(E)-2-((3-bromofenilimino)metil)-4,6-di-tert-bütilfenolato-N,O-}bakır(II) (PMTB)2Cu sentezlendi. (PMTB)2Cu bileşiği FT-IR, UV-Vis, X-ışını kırınım spektroskopisi, DFT ve Hirshfeld yüzey analiz yöntemleriyle karakterize edildi. Ayrıca elde edilen sonuçlar arasındaki uyumluluk ve farklılıklar değerlendirilerek teorik ve deneysel veriler karşılaştırılmıştır. (PMTB)2Cu bileşiği için biyolojik aktivitesi, fizikokimyasal, lipofilik, suda çözünürlük, farmakokinetiği ve ilaca benzerliği çevrimiçi bir SwissADME programı ile araştırıldı. Bileşiğin moleküler kenetleme çalışmaları yapıldı. (PMTB)2Cu bileşiğinin Liyaz hedef sınıfındaki karbonik ahidraz II (CA2) hedefi ile etkileşim verdiği belirlendi. CA2 enzimi kırmızı kan hücrelerinde, hayvanların diğer bölgelerinde ve bitkilerde bulunur. Kana karışan karbondioksit CA2 enzimi ile karbonikaside dönüştürülür. İyonlarına ayrışan karbonikasid kana karışarak pH dengesini sağlar Asit-baz dengesi, kardiyovasküler uyumluluğun düzenlenmesi, sindirim, hücre bölümleri arasındaki iyon değişimi ve değişik enzimatik reaksiyonlar için gerekli bikarbonatın sağlanması gibi çeşitli görevlerin gerçekleşmesinde rol almaktadır. Autodock4 ve Discovery studio görselleştirme programlarından elde edilen sonuçlar, sentezlenen bileşiğin CA2 enzimi ile uyumlu sonuç verebileceğine ışık tutmaktadır.
Yönlendirilmiş Trafik Etkisi Altında Kentsel Hava Kalitesi ve Gürültü İncelemesi: Alifuatpaşa, Sakarya Örneği
Authors: Özden Abdulkadir , Talu Atilla , Korkmaz Abdurrahman
Published: December 2024

Araç trafiği, modern kentsel alanlarda kaçınılmaz bir gerçeklik olsa da önemli çevresel sorunları beraberinde getirmektedir. Son yıllarda artan araç sahipliğine paralel olarak ulaşım kaynaklı artan gürültü ve partikül madde (PM) kirliliği, solunum ve kardiyovasküler hastalıklar gibi sağlık sorunlarıyla ilişkilendirilmektedir. Gürültü ve partikül madde kirliliğinin, halkın refahı ve sürdürülebilir kentsel gelişim için anlaşılması ve yönetilmesi büyük önem taşımaktadır. Bu çalışmada, Sakarya ili Geyve ilçesi Alifuatpaşa Mahallesi’nin partikül (PM2.5 ve PM10) ve gürültü düzeyleri saha ölçümleri ile değerlendirilmiştir. Ankara-İstanbul yüksek hızlı tren (YHT) güzergahı üzerinde bulunan bölgede, raylı sistem altyapı çalışmaları sebebi ile Geyve girişinde kapatılan hemzemin geçit bölgedeki endüstriyel tesislere ve iç kesimlere olan ulaşımı Alifuatpaşa üzerinden yapılmaya zorlamış; bu durum ise bölgedeki araç yoğunluğu ve kompozisyonunu önemli ölçüde değiştirmiştir. Yapılan çalışmada, ilgili yönlendirilmiş trafik güzergahı üzerinde 8 farklı noktada alınan PM2.5, PM10 ve gürültü ölçümleri mevcut standartlar bakımında değerlendirilmiştir. Yapılan ölçümlerde gürültü düzeylerinin izin verilen sınırların üst seviyelerinde ve zaman zaman da sınırı aşan düzeylerde olduğu; partikül madde kirliliğinin ise mevcut sınırların çok üzerinde olduğu tespit edilmiştir. Mevcut trafik şartlarında çevresel etkilerin dikkate alınması gerekliliğinin yanında, özellikle kısa süreli olmayan yönlendirilmiş trafik durumlarında oluşabilecek kirlilik artışının izlenmesi ve gerekli önlemlerin alınması toplum sağlığı ve adalet anlayışı bakımından önemlidir.
Kurtosis Rejection-Based Person Identification from Photoplethysmography Signals Recorded During a Step Exercise
Authors: Aydemir Tuğba , Şahin Mehmet
Published: December 2024

In addition to computer vision-based methods, physiological signal-based person identification (PI) applications have attracted great attention in recent years with various kinds of advantages. Because physical activities can signiﬁcantly contaminate physiological signals, most of the PI models were proposed to acquire the considered signal during the resting state. In this study, we proposed a kurtosis rejection-based PI from photoplethysmography (PPG) signals recorded during a step exercise. In the preprocessing stage, we rejected the PPG trials, which have a kurtosis value greater than five and are labeled as non-PPG, from the classification process. Afterward, the features were extracted by the sequential forward mother wavelet selection method and classified using the k-nearest neighbor algorithm. We achieved the highest classification accuracy rate of 88.64% PI performance. The obtained results proved that the kurtosis rejection-based PPG signals recorded during the step exercise can be reliably used for PI.
TS-FIS Yöntemi Bulanık Çıkarım Sistemi ile Enflasyon Öngörüsü: Türkiye Örneği
Authors: Kara Mehmet Akif
Published: December 2024

Ekonomik krizlerin gün geçtikçe etkilerinin daha fazla hissedildiği dönemlerde sıkça konuşulan kavramlardan birisi de enflasyondur. Enflasyon fiyatların genel düzeyindeki artış olarak tanımlanmaktadır. Enflasyon öngörüleri krizle mücadele ve krizin etkilerinin azaltılması açısından önemli bir süreçtir. Bu öngörülerin gerçeğe daha yakın elde edilmeleri kararların da doğru verilmesine fayda sağlamaktadır. Türkiye Cumhuriyeti Merkez Bankası her yılın belirli dönemlerinde yayınladığı enflasyon raporlarında enflasyon beklentisi anketi sonuçlarına da yer verilmektedir. Bu çalışmada veri seti olarak 2003-2023 yılları arasında Türkiye Cumhuriyeti Merkez Bankası TÜFE oranları kullanılmıştır. Çalışmada yöntem olarak Yolcu, Eğrioğlu ve Baş (2018) tarafından önerilen TS-FIS yöntemi ile enflasyon tahmininde bulunulmaktadır. Bulanık çıkarım sistemleri zaman serisi tahmini için yaygın olarak kullanılmaktadır. Klasik bulanık çıkarım sistemlerinin makul bir tahmin performansı için çok fazla parametre tahmin etmesi gerekmektedir. Yolcu, Eğrioğlu ve Baş (2018) tarafından önerilen çıkarım sistemi ile daha iyi tahmin sonuçları üretildiği görülmektedir. Elde edilen sonuçlar klasik zaman serisi yöntemleri (ARIMA, Holt’s, Naive) ile bulanık zaman serisi yöntemleri (Chen, 1996 ve Chen, 2002) ile karşılaştırılmıştır. Sonuç olarak TS-FIS yönteminin enflasyon öngörüsü problemi için en başarılı performansı ürettiği ortaya konulmuştur.
A Comparative Analysis of Convolutional Neural Network Architectures for Binary Image Classification: A Case Study in Skin Cancer Detection
Authors: Korkut Şerife Gül , Kocabaş Hatice , Kurban Rifat
Published: December 2024

In this study, a comprehensive comparative analysis of Convolutional Neural Network (CNN) architectures for binary image classification is presented with a particular focus on the benefits of transfer learning. The performance and accuracy of prominent CNN models, including MobileNetV3, VGG19, ResNet50, and EfficientNetB0, in classifying skin cancer from binary images are evaluated. Using a pre-trained approach, the impact of transfer learning on the effectiveness of these architectures and identify their strengths and weaknesses within the context of binary image classification are investigated. This paper aims to provide valuable insights for selecting the optimal CNN architecture and leveraging transfer learning to achieve superior performance in binary image classification applications, particularly those related to medical image analysis.
Water Quality Assessment of the Erfelek Dam Lake in the Context of Drinking Water Treatment Plant, Sinop Municipality, Northern Türkiye
Authors: Mete Betül , Karadeniz Gül Eda , Bayram Adem
Published: December 2024

Domestic water demand for the city of Sinop has been supplied by the Erfelek Dam Lake on the Karasu Stream after treatment at the drinking water treatment plant of the Sinop Municipality, Türkiye. The aim of this study is to assess the dam lake water quality firstly with reference to seven parameters: water temperature, hydrogen ion concentration, dissolved oxygen concentration, electrical conductivity, turbidity, total iron, and manganese ion. It is to assess the suitability for human consumption lastly with reference to six more indicators: ammonium nitrogen, nitrite nitrogen, nitrate nitrogen, chlorine, residual chlorine, and copper ion. Daily water quality data was considered for two periods, each of which is one year. The quality assessment was performed according to the Turkish Surface Water Quality Regulation (TSWQR). The results for the untreated reservoir waters matched the permissible levels by the TSWQR. On the other hand, the after treatment water quality and safety of the reservoir waters matched the standards imposed by the Regulation Concerning Water Intended for Human Consumption. In addition, water quality index (WQI) values for the years 2014 and 2023 were calculated for the Erfelek Dam Lake, and the temporal change of the water quality was investigated. Calculated WQI values indicated a significant deterioration in the water quality of the Erfelek Dam Lake in 2023, particularly in the summer months, compared to 2014. With this study, the drinking water quality of Sinop Province is assessed for the first time.
Krom(VI) İyonlarının Adsorpsiyonunda Deniz Çayırlarından Üretilen Aktif Karbonun Kullanımı
Authors: Esen Erden Kadriye
Published: December 2024

Bu araştırmada, deniz çayırı olarak da bilinen Posidonia oceanica'dan elde edilen aktif kömür (PO-AK) adsorban olarak kullanılarak ağır metal Cr (VI) iyonlarının adsorpsiyonu temas süresi, başlangıç konsantrasyonu, pH, sıcaklık, adsorban dozajı gibi değişen parametreler ışığında incelenmiştir. Cr (VI) iyonlarının adsorpsiyon mekanizmasında çözelti pH'sı önemli bir parametre olup; çalışmada Cr (VI) iyonlarının PO-AK ile adsorpsiyonunda en etkili pH değeri 2.0 olarak tespit edilmiştir. Çalışmada elde edilen verilerden standart Gibbs serbest enerjisi (∆G0), standart entalpi (∆H0) ve standart entropi (∆S0) değerleri hesaplanmış; sırasıyla -20.06 kJ mol-1, -32.40 kJ mol-1 ve -0.04 kJ mol-1 olarak bulunmuştur. Adsorpsiyon sürecinde sistem sıcaklığının yükselmesiyle adsorpsiyon veriminin düştüğü ve adsorpsion reaksiyon mekanizmasının ekzotermik olarak gerçekleştiği tespit edilmiştir. İncelenen konsantrasyon etkisinden elde edilen veriler Langmuir, Freundlich ve Temkin izotermlerine uygunluk göstermiştir. Bu çalışmadan elde edilen sonuçlara göre gerekli optimum koşullar sağlandığında, sulu çözeltilerden Cr (VI) iyonlarının gideriminde Posidonia oceanica’dan elde edilen aktif kömürün adsorplama kabiliyetinin oldukça yüksek (%98) olduğu bulunmuştur.
Araç Uygulamalarında Kullanılan Hibrit Sistemler için PEM Yakıt Pillerinin Elektrokimyasal Modellenmesi
Authors: Hüner Bulut
Published: December 2024

Bu makale, Proton Değişim Membranlı Yakıt Hücresini (Proton Exchange Membrane Fuel Cell - PEMFC) ve araç dinamiği modeli kullanan hibrit sisteme dayalı olarak yakıt hücreli araca enerji sağlayan hibrit güç sisteminin matematiksel modellenmesine odaklanmaktadır. PEMFC’nin performansı; sıcaklık, membran kalınlığı, basınç ve nem gibi birçok farklı çalışma parametrelerinden büyük ölçüde etkilenir. Bu çalışmada, araç uygulamaları için önerilen hibrit sistemlerde 150 hücreli PEMFC yığınının elektrokimyasal modellenmesi ele alınmıştır. PEMFC’nin matematiksel modeli basitleştirilmiş varsayımlara ve yarı ampirik denklemlere dayanmaktadır. Ancak bu yaklaşımlar PEMFC’de meydana gelen temel kimyasal ve fiziksel etkileşimlere dayanarak kullanılmaktadır. Hibrit sistemler için PEMFC’nin polarizasyon eğrileri tartışılmış ve matematiksel modelin sonuçları farklı parametreler ile karşılaştırılmıştır. Önerilen elektrokimyasal modelde, sabit basınçta çalışma sıcaklığının artması ve membran kalınlığının azalmasıyla birlikte PEMFC yığının performansında bir iyileşme olduğu belirlenmiştir. Geliştirilen matematiksel model, bu koşullar altında PEMFC yığın performansını makul bir doğrulukla tahmin ederek hibrit araçların enerji yönetim sistemlerinin daha etkin ve verimli bir şekilde tasarlanmasına yardımcı olabilir.
Typha latifolia ile Sulu Çözeltiden Kristal Viyole Boyasının Adsorpsiyonu; Doğrusal ve Doğrusal Olmayan İzoterm, Kinetik ve Dizayn
Authors: Gümüş Dilek , Gümüş Fatih
Published: December 2024

Boyalar dünya çapında pek çok sektörde yaygın olarak kullanılmaktadır. Boya ile kirlenmiş atıksular hem su kaynakları hem de canlı yaşamı için tehdit oluşturan önemli bir kirlilik unsurudur. Bu nedenle boyalı atıksuların çevreye deşarj edilmeden önce arıtılmaları gerekmektedir. Adsorpsiyon teknolojisi, boyaların gideriminde etkin olarak kullanılan sistemlerden biridir. Sistemin verimliliği ve maliyeti kullanılan adsorbentle yakından ilişkilidir. Çalışma kapsamında sulak alanlarda bol miktarda bulunan bir su bitkisinin (Typha latifolia) modifiye edilerek sulu çözeltiden Kristal Viyole giderimi için verimli bir adsorbent olarak değerlendirilebilirliği araştırılmıştır. Modifikasyon ajanı olarak SDS (sodyum dodesil sülfonat) kullanılmıştır. Adsorbentin pHpzc (sıfır yük noktası) değeri belirlenmiştir. Çalışmalarda 0,5-2 g/L aralığında değişen miktarlarda adsorbent dozajı, 5-20 mg/L aralığında boya konsantrasyonu, 5-8 aralığında pH değeri ve 0-360 dk aralığında temas süresi gibi temel işletme parametreleri araştırılmıştır. Optimum parametreler; pH 8, adsorbent dozajı:0,5 g/L, adsorpsiyon süresi: 240 dakika olarak belirlenmiştir. Çalışma kapsamında 3 farklı İzoterm (Langmuir, Freundlich ve Temkin) modelin doğrusal ve doğrusal olmayan model verileri karşılaştırılmıştır. Temkin izoterm modeli adsorpsiyon sürecini hem doğrusal hem de doğrusal olmayan model denklemleriyle en küçük hata fonksiyonlarını üreterek en iyi şekilde açıklamıştır. Ayrıca, boyalı atıksu için en uyumlu izoterm modele dayalı tek aşamalı bir reaktör sistemi de sunulmuştur. Kinetik model verileri sözde ikinci derece kinetik model çalışma sonuçlarıyla uyumlu bulunmuştur. Yüzey aktif maddeyle modifiye edilerek hazırlanan adsorbentin boyalı atıksuların arıtımında başarılı bir performans sergileyeceği sonucuna varılmıştır.
Otomatik Gerilim Regülatörü Sistemi Denetleyici Tasarımı için Meta-Sezgisel Algoritmaların Performansı
Authors: Öztürk Ömer , Çavdar Bora
Published: December 2024

Senkron generatörlerin terminal gerilimlerinin ayarlanması otomatik gerilim regülatörleri (AVR) tarafından sağlanır. Terminal geriliminin istenilen diğer bir deyişle referans gerilimde tutulması için sistemdeki değişikliklere hızlıca tepki verebilen bir denetleyici tarafından terminal gerilimin kontrol edilmesi gereklidir. Kullanılacak denetleyicinin seçimi önemli olduğu kadar parametrelerin ayarı da önemlidir. Bu sebeple çalışmada AVR sistemi için farklı denetleyici tiplerinin parametreleri farklı optimizasyon algoritmaları ve farklı amaç fonksiyonları kullanılarak optimize edilmiştir. Bu sayede optimizasyon algoritmalarının aynı koşullarda farklı durumlar altında performansları ortaya koyulmuştur. AVR sisteminde kullanılan denetleyiciler oransal-integral-türevsel denetleyici (PID), kesir dereceli PID (FOPID) ve FOPID denetleyicisine ek ikinci türev operatörü içeren versiyonu FOPIDD kullanılmaktadır. Bu denetleyicilerin parametreleri zebra optimizasyon algoritması (ZOA), karahindiba optimizasyon algoritması (DO) ve çiçek tozlaşma optimizasyon algoritması (FPA) ile optimize edilmiştir. Optimizasyon sürecinde ise zaman ağırlıklı mutlak hatanın integrali (ITAE) ve hata tabanlı yaklaşıma karşı olarak oluşturulan Zwe-Lee Gaing (ZLG) amaç fonksiyonları kullanılmıştır. Elde edilen denetleyici-amaç fonksiyonu-algoritma performansları zaman bölge analizi, yakınsama eğrisi, kutu grafikleri ve diğer istatistiksel yöntemler ile karşılaştırılmıştır.
Implementasi Metode Agile Dalam Pengembangan Aplikasi Absensi Berbasis Web dengan Menggunakan Geofencing
Authors: Niklas Hubert , Haikal Muhammad , Atmojo Wahyu Tisno
Published: December 2024

Pengembangan sistem absensi berbasis web untuk kafe di Gading Serpong sejalan dengan kemajuan teknologi saat ini. Sistem ini memungkinkan akses yang fleksibel melalui internet tanpa memerlukan instalasi perangkat lunak tambahan, sehingga karyawan dan manajer dapat mengakses sistem kapan saja dan di mana saja. Sistem absensi manual sebelumnya, yang menggunakan Google Forms, terbukti tidak efisien karena memerlukan rekonsiliasi manual yang memakan waktu dan rentan terhadap kesalahan. Untuk mengatasi masalah tersebut, penelitian ini menerapkan metode pengembangan Agile dengan model Scrum untuk membuat aplikasi absensi berbasis web. Sistem ini mengotomatisasi pencatatan absensi dan pemantauan secara real-time, mengurangi beban administrasi dan kesalahan. Fitur utama yang dihadirkan adalah geofencing untuk absensi di lokasi dan fleksibilitas jam kerja yang sesuai dengan kebutuhan operasional kafe. Melalui pengembangan iteratif dan umpan balik dari pengguna, sistem ini telah meningkatkan pengelolaan absensi, dengan potensi pengembangan lebih lanjut, seperti integrasi pengenalan wajah.

Kata Kunci: Metode Agile, Pengembangan Aplikasi Absensi, Aplikasi Berbasis Web.
Analisis Pola Pembelian pada Data Penjualan CanNgopi menggunakan Algoritma FP-Growth
Authors: Valencia Shanty , Tisno Atmojo Wahyu
Published: December 2024

Pola pembelian pelanggan merupakan informasi berharga yang dapat digunakan oleh bisnis untuk meningkatkan strategi pemasaran, mengoptimalkan persediaan produk, dan meningkatkan kepuasan pelanggan. Penelitian ini bertujuan untuk menganalisis pola pembelian di CanNgopi menggunakan algoritma FP-Growth yang diimplementasikan melalui platform RapidMiner. Metode penelitian ini melibatkan pengumpulan data transaksi pembelian dari CanNgopi dan menerapkan algoritma FP-Growth untuk mengidentifikasi itemset frekuensi tinggi dan aturan asosiasi. Analisis ini memberikan wawasan tentang produk yang sering dibeli bersamaan, memungkinkan CanNgopi untuk merancang strategi penjualan yang lebih efektif. Penelitian ini menyoroti pentingnya analisis data dan visualisasi dalam mendukung keputusan bisnis. Melalui pendekatan ini, perusahaan dapat memahami kebutuhan pelanggan dengan lebih baik, meningkatkan kepuasan pelanggan, dan mengoptimalkan operasional mereka. Kesimpulannya, analisis data berbasis algoritma FP-Growth dan RapidMiner dapat menjadi instrumen yang efektif dalam memahami perilaku pelanggan dan meningkatkan kinerja bisnis kafe seperti CanNgopi.
Аномальні та нормативні показники вартості на ринку живопису
Authors: ІНДУТНИЙ Володимир , МЕРЕЖКО Ніна , ПІРКОВІЧ Катерина
Published: December 2024

Розглянуто питання визначення аномаль­них та нормативних показників вартості на ринку живопису. Дослідження є актуальним, оскільки досить часто обраховані прогнозні показники вартості творів живопису суттєво відрізняються від цін, які фіксуються в результаті їх продажу на відкритому ринку, і причини таких аномальних відхилень нині є предметом фахових дискусій. Представлено результати вивчення розподілу вартісних показників на українському інтернет-ринку живопису, можливості виділення окремих аномальних цінових груп цього виду товару, а також алгоритм розрахунку прогнозо­ваної вартості творів живопису. Розглянуто гіпо­тезу, що на основі вивчення розподілу вартіс­них показників творів живопису можна виділити інтервал зразків, вартість яких є обґрунто­ваною, а також окремі аномальні цінові групи цього виду товару. Методикою дослідження передбачено: укладання представницької бази вихідної інформації про вартість творів жи­вопису, створення регресійної математичної моделі для прогнозування показників вартості творів живопису, застосування процедур екстраполяції для прогнозування очікуваних рівнів відхилення прогнозних та фактичних вартісних показників. Для досягнення постав­леної мети створено базу вихідної інфор­мації про 160 зразків творів живопису, виставлених на продаж на інтернет-ринку України. Наведено результати вивчення роз­поділу питомих вартісних показників творів живопису. Розглянуто можливість виділення окремих груп аномальних показників вартості творів живопису у створеній базі вихідних даних. Визначено можливості застосування екстраполяції в завданнях прогнозування вар­тості творів живопису, а також надано пояснення до відхилень між спостереженими на ринку та прогнозованими показниками вартості. Залежно від завдання, яке стоїть перед оцінювачем, показано доцільність виді­лення трьох основних характеристик – лікві­даційної вартості, нормативної та макси­мальної вартості в межах наявної облікованої інформації. Наведено приклад прогнозування вартості твору живопису. Запропонований алгоритм прогнозування вартості творів живопису можна використовувати у сферах інвестиційної діяльності, судової експертизи, страхування ризиків, застави, аукціонної справи та колекціонування.
Alumnado subrepresentado e inteligencia artificial
Authors: Ricoy Casas Rosa María , Fernández González Raquel , Santos Garrido Miguel
Published: December 2024

Introducción: Los educadores, la administración pública y los gobiernos, deben ser conscientes de las fortalezas y debilidades de la IA en el aprendizaje, a fin de ser empoderados, no dominados por la tecnología en las prácticas de educación para la ciudadanía digital, especialmente con minorías y/o estudiantes subrepresentados, porque podría aumentar la brecha social y digital. Metodología: Este estudio, utiliza la metodología PRISMA y analiza datos obtenidos de la Web of Science y Google Scholar. Resultados: Se analiza si se producen errores, sesgos, subrepresentación y discriminación, o estos sistemas contribuyen a la inclusión; su interés en la comunidad científica y principales desafíos normativos y éticos a través de numerosos ejemplos. Discusión: Los hallazgos subrayan la importancia de su implementación, de la escasez de la investigación en este ámbito, las oportunidades, las prácticas nocivas y sus efectos, y los retos por alcanzar. Conclusiones: Este análisis subraya su efecto en otros ámbitos como el laboral, su importancia en relación a los derechos fundamentales, y la afectación a nuestros propios modelos de Estado social y democrático de derecho.
Role of Personal and Ground Safety Measures Affecting Sports Performance
Authors: Marwat Mohibullah Khan , Mehmood Kashif , Hussain Sajid
Published: December 2024

Personal and ground safety measures are considered very significant in contact games. The main objectives were to determine the awareness of safety measures among Cricket and Football players and to analyze the effect of these measures on their performance. Inferential, Correlation, regression analysis, and t-test statistics were employed for data analysis. Data reliability was 0.80. So for the question of mean as well as Standard deviation of the scales Personal Safety Measures(PSM),Ground Safety Measures(GSM) & Self-rating Performance (SRP) are concerned, they were 3.34±0.40, 3.34±0.70 and 3.13±0.46 respectively. The performance of the Cricket & Football players had a positive and significant (p<0.05) correlation with PSM (r=0.59) and GSM (r=0.90). The PSM had an insignificant (p>0.05, β1 =0.05) while GSM had a significant effect (p<0.05, β2 =1.05) on the performance of players of both games. PSM & GSM have a positive & significant correlation with the performance of Cricket and Football players.
Endoscopic pituitary gland transposition techniques to the interpeduncular and prepontine regions: an anatomical study
Authors: Nizzola Mariagrazia , Alam Yasaman , Leonel Luciano C. P. C. , Torregrossa Fabio , Graepel Stephen P. , Shinya Yuki , Pinheiro-Neto Carlos D. , Link Michael J. , Peris-Celda Maria
Published: December 2024

OBJECTIVE

The floor of the third ventricle and the interpeduncular and prepontine regions represent challenging surgical targets. The expanded endoscopic endonasal approach (EEA) with pituitary gland (PG) transposition has been proposed to provide direct access to these anatomical regions. Through the years, different endoscopic PG transposition techniques have been studied and presented. The goal of this study was to compare the techniques, relevant anatomy, and surgical exposure of extradural, intradural, and interdural PG transposition techniques.

METHODS

Six formalin-fixed, latex-injected cadaveric head specimens were used to perform the EEA with extradural, unilateral interdural, and unilateral intradural PG transpositions. The interpeduncular and prepontine regions and the neurovascular structures located within these cisterns were carefully exposed and analyzed. The maximal cranial, caudal, and lateral accessible points within the surgical field were identified for each approach. Consequently, the relative craniocaudal and horizontal surgical axes were measured to quantify the extent of accessibility of each approach.

RESULTS

The extradural PG transposition technique provided the largest horizontal extensions and bilateral access to structures within the interpeduncular and prepontine regions; the mean horizontal axis was 17.9 (range 13.9–20.4) mm. The unilateral interdural PG transposition provided wider vertical exposure, with a mean craniocaudal axis of 16.2 (range 13.0–20.9) mm. In this approach, the surgical field was extended cranially above the ipsilateral mammillary body (MB). The unilateral intradural PG transposition provided a similar surgical exposure to the interdural approach, with a mean craniocaudal axis of 14.7 (range 12.9–15.8) mm. The approach required significant manipulation of the PG after opening both periosteal and meningeal dura layers.

CONCLUSIONS

The extradural PG transposition is indicated for lesions of the upper clivus region that extend bilaterally and do not have a cranial extension beyond the MBs. The inter- and intradural PG transpositions are beneficial for unilateral lesions that extend cranially to the MBs. Both techniques require coagulation of the ipsilateral inferior hypophyseal artery. The intradural technique requires more manipulation of the PG, while the interdural technique requires opening and access to the cavernous sinus. If needed, the intra- and interdural techniques can also be performed bilaterally.
Opioid prescribing guidelines for spine surgery patients: a multisite analysis of guideline implementation and monitoring with an automated text messaging platform
Authors: Tudor Thilan , Agarwal Anish K. , Delgado M. Kit , Lee Daniel J. , Nguyen Jessica T. , Xiong Ruiying , Ozturk Ali K. , Yoon Jang W. , Welch William C. , Ali Zarina S.
Published: December 2024

OBJECTIVE

The aim of this study was to describe the effect of opioid prescribing guideline implementation for elective spine surgery cases on prescribing and consumption behaviors in a multisite academic hospital system. The effectiveness of an automated text messaging system as a tool to monitor postoperative opioid use and pain outcomes and inform guideline development and deployment is also evaluated.

METHODS

The authors conducted a prospective study of postoperative opioid use behaviors and patient-reported outcomes for 2101 elective spine surgery cases between December 2018 and March 2022, prior to and following the implementation of opioid-prescribing guidelines in February 2021 at three urban hospital sites within a large academic health system. Opioid-prescribing guideline development was based on patient-reported opioid consumption behaviors monitored using a two-way text messaging platform in the perioperative and postoperative settings; its implementation involved standardized indication-specific discharge pain medication dosing. Opioid prescription and consumption trends were compared between pre–guideline and post–guideline implementation cases.

RESULTS

The overall response rate to the automated text messaging system was 50.2% when evaluating all elective spine surgery cases. There were significant reductions in the mean postsurgical opioid prescription for thoracolumbar laminectomies and fusions (p < 0.001) after guideline implementation. There was no difference in mean cumulative postsurgical opioid consumption by operative procedure after guideline implementation. Prior opioid use (OR 1.81, 95% CI 1.05–3.03; p < 0.05) and the aggregate 12-week mean pain score (OR 1.20, 95% CI 1.07–1.35; p < 0.05) were significant predictors of elevated opioid use.

CONCLUSIONS

Opioid-prescribing guideline development for elective spine surgery cases that is informed by patient-reported opioid behaviors using a text messaging platform might reduce opioid volume prescribed by the operative procedure.
False alarms and the burden of shunt failure in pediatric patients with hydrocephalus: a longitudinal study
Authors: Kim Sang Ho , Heppner Peter , Kim Yu Jin , Guild Sarah-Jane , Windsor John , Malpas Simon
Published: December 2024

OBJECTIVE

This study aimed to investigate the burden of CSF shunt failure and false alarms on pediatric patients with hydrocephalus, their caregivers, and the healthcare system.

METHODS

This retrospective longitudinal study examined pediatric patients who underwent CSF shunt procedures at Auckland City Hospital from January 2014 to December 2019. The study included patients aged 18 years or younger living within the hospital’s catchment area. Clinical encounters were recorded from the date of their first shunt insertion until November 1, 2023. Data collected included patient demographics, hospital admissions, acute and elective shunt-related imaging, clinic visits, surgery times, and symptom characteristics. Shunt-related admissions were categorized as either shunt failures or false alarms.

RESULTS

The cohort comprised 73 patients with follow-up periods ranging from 4 to 18 years. By the 1st year, 71% had been rehospitalized for shunt-related concerns, with 59% experiencing at least 1 false alarm and 38% experiencing at least 1 shunt failure. By the 4th year, 88% of patients had been rehospitalized for shunt-related concerns, 42% had experienced at least 3 false alarms, 60% had at least 1 shunt failure, and 25% had at least 3 shunt failures. The average accumulated hospital stay was 1 month for shunt failures and 2 weeks for false alarms, compared with 22 days for all other admissions. Frequent clinic interactions from multiple specialties highlighted the complex care needs of these patients. The timing of shunt failure or false alarm, but not symptom duration, significantly predicted their overall frequency.

CONCLUSIONS

This study details the chronic burden and complex care requirements for pediatric patients with CSF shunts. Shunt-related concerns significantly and disproportionately contribute to the patients’ total hospital interactions. The findings highlight the immediate clinical need for novel technologies to enable long-term and accurate detection of shunt failure to optimize patient care. Future efforts should focus on improving shunt systems to lower failure rates.
The epidemiology and management of spontaneous spinal epidural abscesses in children: a single-center experience
Authors: Joerger Torsten A. , Wang Clara Xi , Kumar Nankee K. , Flanders Tracy M. , Lang Shih-Shan
Published: December 2024

OBJECTIVE

Spinal epidural abscesses (SEAs) are rare infections in children but can lead to significant neurological sequelae. The authors sought to describe the presentation, management, and outcomes of children with these infections at their institution.

METHODS

This was a retrospective study of pediatric patients admitted with SEA to a quaternary children’s hospital between 2013 and 2023. Clinical characteristics including laboratory, surgical, and antimicrobial data were collected and analyzed.

RESULTS

Fourteen patients (median age 3.7 years) had SEAs. Thirteen (93%) patients developed the infection in the outpatient setting, and of these 10 (77%) were evaluated by a medical provider prior to the encounter when the diagnosis was made. The most common causative pathogen was Staphylococcus aureus. Thirteen (93%) of 14 patients underwent a surgical procedure, and patients were treated with antibiotics for a median of 38 days. Eleven (79%) of 14 patients received enteral antibiotics for part of their treatment course. All patients recovered with no neurological sequelae.

CONCLUSIONS

SEAs are rare infections, but good outcomes can be obtained with prompt antimicrobial and surgical management. Enteral antibiotics should be considered as part of therapy. Larger multicenter studies are needed to determine the optimal antibiotic duration and route, and which patients should undergo neurosurgical intervention versus interventional radiology drainage or medical management alone.
On second-order q-difference operators
Authors: Sertbaş Meltem
Published: December 2024

The minimal and maximal operators defined by second-order q-difference operator are discussed in this paper. Spectrum sets of these defined operators have been determined. In addition, two extensions of the minimal operator is also mentioned.
Almost inner derivations of Leibniz algebras
Authors: Mansuroğlu Nil , Özkaya Mücahit
Published: December 2024

This work is presented the study on almost inner derivations of Leibniz algebras. In this note, we demonstrate the natural extensions of some general properties on derivations given for Lie algebras to Leibniz algebras with finite dimension, and also we investigate which statements a mapping have to hold to be an almost inner derivation.
Influence of chemical elicitors on induced defence system in cassava (Manihot esculenta Crantz) caused by Sri Lankan Cassava Mosaic Virus
Authors: NGUYEN K. C. , DUONG T. T. , NGUYEN V. T.
Published: December 2024

Cassava mosaic disease (CMD) caused by Sri Lankan Cassava Mosaic Virus (SLCMV) is one of the ten most serious crop viral diseases in the world. CMD is found in Vietnam, and since 2016 the disease has caused serious damage to cassava production. The current study was conducted under both greenhouse and field conditions to identify chemical elicitors of host defense against SLCMV. The greenhouse and field experiment were carried out in 2002 and 2023 at School of Agriculture and Forestry, Hue University. The CMD-susceptible variety KM94 was treated before planting by soaking cuttings in solution of each of several chemical elicitors including END- BYE (tannic acid: 25%, tea saponin: 3%), SAT 4SL (cytosinpeptidemycin: 40 g/L), NINGNA STAR 80SL (ningnamycin: 80 g/L), Cruiser Plus 312.5FS (thiamethoxam: 262.5 g/L, difenoconazole: 25 g/L, fludioxonil: 25 g/L), CuCl2, and salicylic acid (SA) at 1% concentration. Results showed that the effectiveness was highest with Cruiser Plus 312.5FS (30.1%) and lowest with SAT 4SL (14.4%) at 104 days after planting. The AUDPC was highest with untreated plants and lowest with plants treated with Cruiser Plus 312.5FS. Actual yield of plants treated with salicylic acid (25.2 t/ha) was higher than that of untreated plants (18.1 t/ha). Plants treated with chemical elicitors can improve the yield and starch as compared with untreated plants. As a result, cassava cuttings treated with chemical elicitors are considered a good measure to control cassava mosaic disease.
Integrating bacterial inoculation and foliar nutrition for sustainable berseem clover (Trifolium alexandrinum L.) production
Authors: AL-ZUBADE AMMAR , MOHAMMED HUSSEIN ABBAS , AL-HILFY INTSAR H. H.
Published: December 2024

As an annual leguminous forage crop, berseem clover demonstrates significant potential as a cover crop and green manure. Through symbiotic nitrogen fixation and extensive root development, it enhances soil fertility and crop production optimization. The integration of berseem clover into crop rotations was found to increase subsequent crop yields and reduce reliance on synthetic fertilizers. This study was conducted during the growing seasons of 2022-23 to explore the contribution of bacterial inoculation (inoculated and uninoculated). Foliar alga 600 timing applications implemented at concentrations of (0 and 1 g/L) (no spray, one spray, and two sprays) in local clover cultivar. The treatments were applied at both the green-up and flowering stages. Alga 600 treatments, bacterial inoculation, and their interactions significantly differed in most measured parameters. Inoculated clover with two sprays exceeded the control treatment (without inoculation) and other foliar treatments of alga 600 application on seed yield, pod number, 1000 seed weight, and total dry matter at the flowering stage. Hence, more research should be done considering different kinds of symbiotic bacterial strains on responsive cultivars.
Menstimulasi cara berpikir kritis dan kognitif pada Anak Usia 3-5 Tahun melalui permainan puzzle stick misteri : Studi Literatur
Authors: Christina maria
Published: December 2024

Currently learning uses a student-centered approach. In reality, students' critical thinking abilities are still low. Advanced Puzzle Media is a learning media in the form of three-dimensional puzzles that can stimulate students to think critically and integrate with online material and questions. Therefore, the author innovated to create Advanced Puzzle media to improve students' critical thinking skills. In reality, students' critical thinking abilities are still low. This research aims to find out whether the use of puzzle stick media can improve students' critical thinking skills in PAI learning and how the use of puzzle stick media improves students' critical thinking skills in PAI learning. The use of stick puzzle media in improving students' critical thinking skills is through the pairing puzzle process.Problem solving is one of the aspects contained in the cognitive domain. Considering that young children are still in the learning stage of recognizing environmental conditions in their surroundings, including all existing problems, the learning activities provided refer to problem solving exercises. Children learn through playing, using puzzle media to train children's thinking skills in solving problems. The aim of this research is to determine the effect of using puzzle game media on children's problem solving abilities
Manajemen Prasarana Dalam Penataan Kelas Outdoor di TK Bina Anaprasa Nuris Kabupaten Jember
Authors: Maudy Aini Maudy Aini Lita Mirani
Published: December 2024

Tujuan penelitian ini adalah untuk mendeskripsikan pengelolaan prasarana di Anaprasa Nuris, Jember, melibatkan perencanaan kebutuhan, pengadaan, serta manajemen fasilitas pendidikan oleh kepala sekolah. Sekolah ini menerapkan konsep kelas luar ruangan berbentuk gazebo yang memaksimalkan pembelajaran anak-anak tentang alam secara efektif. Kelas outdoor ini bertujuan untuk merangsang ide kreatif anak, memfasilitasi identifikasi alam, meningkatkan aktivitas sosial, dan menciptakan suasana kelas yang otentik, sehingga melatih konsentrasi dan perkembangan kognitif anak. Penelitian menggunakan pendekatan deskriptif kualitatif dengan metode pengumpulan data melalui wawancara, observasi, dan dokumentasi. Hasil penelitian menunjukkan pentingnya peran aktif dan kreatif guru dalam mengoptimalkan fasilitas yang ada serta menyesuaikan dengan karakteristik anak usia dini. Kebersihan dan keamanan di kelas luar ruangan serta penyediaan mainan menarik juga diakui penting untuk menjaga minat belajar anak.
PERAN IBU DALAM MENANAMKAN ETIKA MAKAN PADA ANAK USIA DINI MENURUT ISLAM
Authors: Syakira Astri
Published: December 2024

This study was conducted to find out about the role of mothers in instilling eating ethics in early childhood according to Islam. The data from this study were collected through analysis and observation and using literature methods. The purpose of the study was to discuss how mothers teach eating ethics to children with Islamic teachings, get children used to good and correct eating ethics, and reprimand (conflict mediator) children when they waste food. This really needs to be discussed and studied to find out what role mothers play in instilling eating ethics in early childhood according to Islam.
Dissolution of Ta–Nb and Nb minerals in granitoid melts
Authors: Chevychelov V. Yu. , Viryus A. A.
Published: December 2024

The effective solubilities (maximum contents) of Ta and Nb in acidic magmatic lithium-fluoride melts of varying alkalinity and alumina content were experimentally determined at the dissolution of Ta–Nb and Nb minerals: pyrochlore, microlite, ilmenorutile and ferrotapiolyte at T = 650–850 °C and P = 100 and 400 MPa, and also the partitioning of Ta and Nb in mineral–melt systems was studied. When pyrochlore is dissolved in granitoid melts at P = 100 MPa and T = 650–850 °C, the highest effective solubilities of Nb (0.7–1.8 wt. %) are obtained in alkaline melt; they decrease significantly (up to 0.03–0.5 wt. %) in subaluminous and peraluminous melts. Increasing the temperature increases the solubility (content) of Nb in the melt. When dissolving microlite, similar dependences of Ta solubility were obtained. In peraluminous granitoid melt microlite remains stable, while pyrochlore becomes unstable. It has been established that in alkaline and subaluminous melts, a decrease in pressure from 400 to 100 MPa does not have a significant effect on the dissolution of microlite and pyrochlore, while in the peraluminous melt the Ta and Nb contents noticeably decrease. The dependences of the solubility of Nb and partitioning of Nb between granitoid melts and ilmenorutile on the alkalinity–alumina content of the melt are similar to those for the dissolution of columbite and tantalite. The dependences obtained by dissolving ferrotapiolyte, pyrochlore and microlite differ from them.
Biogeochemistry of peat deposits of the Holocene section of the Vydrinsky bog (southern Baikal region)
Authors: Maltsev Anton E. , Bobrov Vladislav A. , Leonova Galina A. , Preis Yulia I. , Klimin Mikhail A. , Bychinsky Valery А.
Published: December 2024

Drilling cores from peat deposits of the Vydrinsky bog with a thickness of 4.4 m and an age of 13,100 cal. years, composed of lowland, transitional and high-moor types of peat, were studied in detail. The processes of post-sedimentary transformations of swamp sediments during early diagenesis are considered, the distribution of elements, the formation of authigenic minerals and the chemical composition of swamp waters are studied. The destruction of organic matter begins already in the upper intervals of peat at the early stages of diagenesis. Pyrograms do not have clearly defined high-temperature peaks, “rudiments” of the macromolecular structure of kerogen, which indicates a low degree of transformation of peat organic matter. A high number of organotrophic, ammonifying, nitrifying, phosphate-mobilizing microorganisms, a small number of Fe- and Mn-oxidizing microorganisms, and sulfate-reducing bacteria were revealed. The presence of organotrophic microorganisms throughout the section indicates that the biogeochemical processes of the carbon cycle cover the entire thickness of the peat deposit. A small amount of S (II) indicates a low intensity of sulfate reduction processes. Lowland peat is characterized by high contents of Si, Al, Fe, Ca, Sr, Ba, Zr, La and anomalous contents of Cu, Zn, which is a consequence of the formation of the bog under conditions of rich mineral nutrition. In the ash part of the transitional peat, a decrease in the contents of Si, Fe, Sr, Br, K Si, Ca, Ba, Cu, Zn and La is noted, which reflects the gradual weakening of the connection of the peat deposit with the underlying rocks. In the near-surface horizon of high-moor peat, there is an increase in the contents of K, Mn, Zn, Hg, Pb and As, which is associated with an increase in atmospheric dust and anthropogenic impact on the bog ecosystem in the 20th and 21st centuries. Bog waters of low-lying peat are characterized by high contents of the main ions, Al, Fe, Mn, Sr, while transitional peat is characterized by a decrease in DOC, SO42–, HCO3–, Al, Fe, Ni, Ca, Mg. The oligotrophic strata is characterized by the development of Fe oxides and hydroxides, the presence of vivianite is noted for transitional peats, and the eutrophic part of the peat deposit includes rhodochrosite and sulfides of Fe, Cu, and Zn.
Methane and sulfide sulfur in water and bottom sediments of streams of the steppe zone of the European part of Russia
Authors: Garkusha D. N. , Fedorov Yu. A. , Tambieva N. S.
Published: December 2024

The results of long-term studies of the conjugate distribution of concentrations of methane (CH 4 ) and sulfide sulfur (S sulfide ) in bottom sediments of streams of the steppe zone of the European part of Russia are analyzed. In addition to CH 4 and S sulfide , Eh and pH values, humidity and density were determined in various sediment horizons; CH 4 , dry residue and pH values were determined in water. Concentrations of CH 4 in the water of watercourses vary from 0.1 to 2007.0 µl/l (median 24.3 µl/l), with the largest number of values (72 %) in the range 10.1–100.0 µl/l. The concentrations of CH 4 and Ssulfide in the bottom sediments of watercourses are quite high and vary, respectively, from 0.01 to 51.0 µg/g of wet sediment (median 1.35 µg/g) and from 0.001 to 4.50 mg/g of wet sediment (median 0.813 mg/g). Usually, there is an increase in CH 4 and S sulfide from the surface layer to the subsurface horizons, after which their concentrations decrease. The difference between the distribution of sulfides and the distribution of CH 4 is the more frequent occurrence of maximum concentrations of sulfides in less deep sediment horizons. Seasonal changes in the distribution of CH 4 and S sulfide along the vertical of sediments were recorded not only in terms of their concentrations, but also in the location of maximum and minimum values. There is a weak direct relationship between the concentrations of CH 4 and S sulfide , which indicates synchronous processes of formation of these gases in separate layers of sediments of the studied watercourses. The direct relationship established between the concentrations of CH 4 in water and the 0–2 cm layer of bottom sediments indicates sediments as an important source of CH 4 entering water and its emission into the atmosphere.
Preparation of a сloso-Dodecaborate Anion Conjugate with Ethyl Glycinate and Study of Its Biodistribution in a B16f10 Melanoma Model
Authors: Ryabchikova M. N. , Nelyubin A. V. , Smirnova A. V. , Finogenova Y. A. , Skribitsky V. A. , Shpakova K. E. , Kubasov A. S. , Zhdanov A. P. , Lipengolts A. A. , Grigorieva E. Yu. , Zhizhin K. Y. , Kuznetsov N. T.
Published: December 2024

A method for the synthesis of amidine-closo-dodecaborate based on glycine ethyl ester in the form of sodium salt solvate of high purity and constant composition was proposed in this work. The structure of the obtained solvate was confirmed by X-ray analysis of single crystal. In addition, total and acute toxicity as well as biodistribution in laboratory mice with B16F10 melanoma were determined for the synthesized conjugate Na[B12H11NH=C(NHCH2COOC2H5)CH3].
Modeling of The Phase Complex Of A Stable Pentatope LiF-K2CrO4-Rb2CrO4-KF-RbF of the four-component mutual system Li+, K+, Rb+||F–, CrO
Authors: Burchakov A. V. , Burchakova E. O.
Published: December 2024

The quasi-four-component system LiF–K2CrO4–Rb2CrO4–KF–RbF, which is a stable pentatope of the four-component mutual system Li+,K+,Rb+||F–,CrO, is selected for study. The prediction of non-invariant and monovariant equilibria in the system was carried out using the crystallization scheme: the eutectic equilibrium L ⇄ LiF + KxRb1–xF + α-K2xRb2–2xCrO4 + α-K3xRb3–3xFCrO4, is carried out in the system, which is confirmed by differential thermal analysis. The crystallization scheme makes it possible to predict non- and monovariant equilibria based on the analysis of faceting systems. The composition and melting point of the mixture corresponding to the four-component eutectic E□ 438 were revealed. Based on the data obtained, a 3D computer model of the phase complex of the system in the form of a concentration pentatope is constructed. The computer model clearly demonstrates the phase transformations in the system. The structure of the spatial phase diagram is revealed. In the system, the crystallizing phases are lithium fluoride, three phases of continuous series of solid solutions: based on potassium and rubidium fluorides – KxRb1–xF, based on potassium and rubidium chromates in α-polymorphic modification – α-K2xRb2–2xCrO4, based on potassium and rubidium fluoride chromates in α-polymorphic modification – α-K3xRb3–3xFCrO4.