bluuebunny/crossref_metadata_2025_split huggingface dataset:
Performance Analysis of Dual-Hop DF Multi-Relay FSO System with Adaptive Modulation
Authors: Alathwary Wagdy Ameen , Altubaishi Essam Saleh 
Published: October 2023

The signal quality in high-bandwidth free space optical (FSO) systems deteriorates due to atmospheric turbulence and pointing errors. Employing techniques such as adaptive transmission and relay selection (RS) can mitigate their effects. This paper analyzes the performance of a dual-hop decode-and-forward multi-relay FSO system with an adaptive M-ary phase shift keying scheme. This analysis is based on the recently proposed Fisher–Snedecor F channel model and considers the impact of pointing errors. We propose two partial relay selection schemes based on the source-to-relay or relay-to-destination channel state information to reduce the complexity of the optimal relay selection scheme. In this investigation, we derive closed-form expressions for the outage probability, modulation level selection probability, and spectral efficiency (SE) and compare the performance of the proposed RS schemes under balanced and unbalanced link cases. We observe an improvement in the SE with an increase in the number of modulation levels and the number of relays. Moreover, it is noted that the performance of the system can be restricted by the quality of either the source-to-relay or the relay-to-destination link, even if the quality of the other link is perfect. Finally, the outcomes obtained through the derived expressions are validated using Monte Carlo simulations.
The Influence of pH Dynamics on Modeled Ammonia Emission Patterns of a Naturally Ventilated Dairy Cattle Building
Authors: Hempel Sabrina , Vu Huyen , Amon Thomas , Janke David 
Published: October 2023

Ammonia emission rates from naturally ventilated livestock housing systems can be estimated in multiple ways. By coupling different modeling approaches towards a semi-mechanistic barn-scale ammonia emission model, we investigated the influence of urine puddle pH dynamics on the (sub)daily and seasonal pattern of ammonia emissions. We compared the simulated ammonia emission patterns using about ten months of on-farm measurements obtained from a naturally ventilated dairy cattle building with a scraped solid floor in Northern Germany. The dataset included gas concentration measurements as well as wind data (ranging from 0 m s−1 to about 8.6 m s−1) and air temperature data (ranging from about −4 ∘C to about 32 ∘C), the average number of housed cows (about 380) and information on the average cow mass (about 700 kg). In addition, the average dry matter intake, total gross energy intake and nitrogen intake were used to model the ammonia emission potential. In the emission modeling, we considered two potential types of pH dynamics in the urine puddles: a saturating scenario and a peaking scenario. For both of them, 21 different combinations of initial pH and maximum pH were considered within a range of 6.5 to 11. We showed that the non-linear interaction of the puddle pH and temperature caused specific emission patterns, where the degree of influence of the two parameters changed over the course of the emission process. Low initial pH values together with high asymptotic pH values were associated with the largest emissions. Considering the same asymptotic pH value, the higher the initial pH value, the lower the observed emissions; especially when assuming peak pH dynamics, the emission values were significantly lower. In natural pH settings (i.e., low to intermediate initial pH and intermediate asymptotic pH), the winter emissions were considerably lower than the summer emissions (i.e., the winter emission was about half of the summer emission, as observed in the on-farm studies). In contrast, artificial pH settings with high pH values led to markedly lower emissions in the summer (i.e., the summer emission was about the same as winter emission), reducing the total annual emission value. Our sensitivity study indicated that the urine puddle alkalizing dynamics play a key role in the overall emission model accuracy in order to capture seasonal and diurnal variability of the ammonia emission of naturally ventilated dairy cattle barns in mechanistic modeling approaches. Thus, future studies should investigate the range of pH dynamics that naturally occur in urine puddles in cattle barns depending on the flooring material, the entry of litter or feed leftovers, the cleaning and cooling system (e.g., in terms of use of water) and so on in order to further refine the emission model.
Heterologous Expression of Platycodon grandiflorus PgF3′5′H Modifies Flower Color Pigmentation in Tobacco
Authors: Ma Lulin , Jia Wenjie , Duan Qing , Du Wenwen , Li Xiang , Cui Guangfen , Wang Xiangning , Wang Jihua 
Published: October 2023

Flavonoid-3′,5′-hydroxylase (F3′5′H) is the key enzyme for the biosynthesis of delphinidin-based anthocyanins, which are generally required for purple or blue flowers. Previously, we isolated a full-length cDNA of PgF3′5′H from Platycodon grandiflorus, which shared the highest homology with Campanula medium F3′5′H. In this study, PgF3′5′H was subcloned into a plant over-expression vector and transformed into tobacco via Agrobacterium tumefaciens to investigate its catalytic function. Positive transgenic tobacco T0 plants were obtained by hygromycin resistance screening and PCR detection. PgF3′5′H showed a higher expression level in all PgF3′5′H transgenic tobacco plants than in control plants. Under the drive of the cauliflower mosaic virus (CaMV) 35S promoter, the over-expressed PgF3′5′H produced dihydromyricetin (DHM) and some new anthocyanin pigments (including delphinidin, petunidin, peonidin, and malvidin derivatives), and increased dihydrokaempferol (DHK), taxifolin, tridactyl, cyanidin derivatives, and pelargonidin derivatives in PgF3′5′H transgenic tobacco plants by ultra-performance liquid chromatography–tandem mass spectrometry (UPLC-MS/MS) analysis, resulting in a dramatic color alteration from light pink to magenta. These results indicate that PgF3′5′H products have F3′5′H enzyme activity. In addition, PgF3′5′H transfer alters flavonoid pigment synthesis and accumulation in tobacco. Thus, PgF3′5′H may be considered a candidate gene for gene engineering to enhance anthocyanin accumulation and the molecular breeding project for blue flowers.
Hygiene Knowledge, Attitudes, and Behaviors of Greek Undergraduate Students on Mobile Phones and Corresponding Devices’ Microbial Assessment
Authors: Delitzakis Dimitrios , Carayanni Vilelmine , Merakou Kyriakoula , Giakkoupi Panagiota 
Published: October 2023

The purpose of this study was to investigate the knowledge, attitudes, and behaviors of Greek undergraduate students on hand hygiene and mobile phone hygiene, in relation to their mobile phones’ microbial load. An anonymous self-reported questionnaire was distributed among 100 students and swabs were taken from their devices for microbiological cultures and for an on-site bioluminescence microbial load assessment. Hand washing was considered the most effective personal protective behavior by the majority (89%), while spatial restrictions (40%) and forgetfulness (31%) were the main reasons for neglecting hand washing. Most students washed their hands 6–10 times/day (32%) for approximately 11–20 s (35%). Although most devices were cleaned/disinfected within the last week (28%), many were contaminated with Staphylococcus saprophyticus (84%), Staphylococcus aureus (13%), and Escherichia coli (39%), while 75% of the samples exceeded the “fail” threshold limit of the luminometer’s measurements. Moreover, statistically significant differences (p < 0.05) were found between the devices’ microbial load and certain hand hygiene behaviors and preferences. The median cfu/cm2 of Escherichia coli was higher among first-year students of health sciences, while Staphylococcus aureus was more prevalent in females’ than in males’ mobile phones. It w therefore understood that undergraduate students’ knowledge, attitudes, and behaviors on hand hygiene and mobile phone hygiene are highly intertwined with the microbial load on their mobile phones.
Pengaruh Efisiensi Kerja dan Motivasi Kerja terhadap Kinerja Sales PT. Paragon Technology And Innovation (
Authors: Lestari Sri , Fatmarida Livia 
Published: October 2023

Abstrak

Tujuan dari penelitian ini yaitu ingin mengetahui “Pengaruh Efisiensi Kerja dan Motivasi Kerja terhadap Kinerja Sales PT. Paragon Technology And Innovation”. Populasi dalam penelitian ini adalah sales di PT. Paragon Technology And Innovation. Dengan menggunakan sampel jenuh sebanyak 50 responden. Analisis dalam penelitian ini dengan menggunakan uji validitas , uji reliabilitas, uji statistik deskriptif, uji normalitas, uji multikolinearitas, uji heteroskedastisitas, uji regresi linier berganda, uji korelasi sederhana, uji koefisien determinasi ,uji F dan uji t. Berdasarkan hasil penelitian untuk variabel efisiensi kerja dengan menggunakan uji t didapatkan hasil perhitungan thitung 4,788 > ttabel 1,677 dan nilai signifikan 0,000 < 0,05, sehingga kesimpulan hasil dari penelitian ini yaitu efisiensi kerja berpengaruh positif dan signifikan terhadap kinerja sales, dan hasil perhitungan untuk motivasi kerja yaitu thitung 1,984 > ttabel 1,677 dan nilai signifikan 0,014 < 0,05, hasil dari penelitian ini dapat disimpulkan yaitu motivasi kerja berpengaruh positif dan signifikan terhadap kinerja. Adapun hasil dari penguji korelasi sederhana X1 dan Y didapatkan hasil nilai R 0,762 , maka dapat disimpulkan terdapat hubungan korelasi yang kuat dan positif antara efisiensi kerja dengan kinerja sales dan berdasarkan nilai uji korelasi sederhana X2 dan Y dengan nilai R 0,635 sehingga dapat disimpulkan bahwa terdapat hubungan korelasi yang kuat dan positif antara motivasi kerja dengan kinerja sales. Hasil koefisien determinasi (R2) sebesar 0,599, sehingga dapat disimpulkan, bahwa efisiensi kerja dan motivasi kerja memiliki pengaruh terhadap kinerja sebesar 59,9%, dan sisanya sebesar 40,1% dipengaruhi oleh variabel lain yang tidak diteliti seperti kompensasi, kepemimpinan, disiplin kerja.
ANALISA KEPUTUSAN PENGGUNAAN LAYANAN KESEHATAN ONLINE PADA APLIKASI KLIKDOKTER
Authors: Herawati Heny 
Published: October 2023

ABSTRAK
Penelitian ini bertujuan untuk menganalisa “ Keputusan Penggunaan Layanan Kesehatan pada Aplikasi KlikDokter ”. Populasi dalam penelitian adalah pengguna layanan kesehatan pada aplikasi klik dokter yang tidak diketahui jumlahnya dan yang menjadi sampel dengan menggunakan rumus lameslow adalah berjumlah 100 responden. Metode analisis yang digunakan dalam penelitian ini adalah uji instrumen uji kelayakan model (uji F) dan uji hipotesis (uji T). Berdasarkan hasil penelitian uji t secara parsial maka variabel promosi berpengaruh positif dan signifikan terhadap keputusan penggunaan karena 5,766 > 1,984 dengan taraf signifikansi uji t 0,000 < 0,05 dan kemudahan penggunaan dapat disimpulkan berpengaruh secara signifikan terhadap keputusan penggunaan pada Aplikasi KlikDokter karena 3,805 > 1,984 dengan taraf signifikansi uji t 0,000 < 0,05. Berdasarkan hasil uji F dimana 66,475 > 3,99 Ftabel dengan taraf signifikansi uji F 0,000 < 0,05 maka disimpulkan bahwa secara simultan promosi dan kemudahan penggunaan berpengaruh terhadap keputusan penggunaan pada Aplikasi KlikDokter.
PENGARUH PERTUMBUHAN PEMBIAYAAN MUDHARABAH, MUSYARAKAH, DAN DANA PIHAK KETIGA TERHADAP PROFITABILITAS (ROA)
Authors: Affar Muhammad , Wilestari Median , Nuraini Duwi Lina 
Published: October 2023

Abstrak
Penelitian ini bertujuan untuk mengetahui pengaruh pertumbuhan pembiayaan mudharabah, musyarakah dan dana pihak ketiga terhadap profitabilitas (ROA). Studi kasus pada Bank Umum Syariah di Indonesia sebelum bergabung menjadi Bank Syariah Indonesia (BSI), yaitu pada Bank Mega Syariah, Bank Panin Dubai Syariah, Bank Muamalat Indonesia Tbk, Bank BNI Syariah, Bank BRI Syariah dan Bank Syariah Mandiri. Penelitian ini menggunakan sampel 6 perusahaan Bank dengan tahun penelitian 2012-2020. Sumber data yang diperoleh dari laporan keuangan tahunan (neraca dan laba rugi). Metode penelitian yang digunakan adalah analisis regresi data panel. Hasil dari penelitian ini menunjukkan bahwa; (1) Variabel pertumbuhan pembiayaan mudharabah berpengaruh negatif signifikan terhadap profitabilitas (ROA), (2) Variabel pertumbuhan pembiyaan musyarakah berpengaruh positif tidak signifikan terhadap profitabilitas (ROA), (3) Variabel pertumbuhan dana pihak ketiga mempengaruhi profitabilitas (ROA). Uji simultan (uji F) menunjukkan variable pertumbuhan pembiayaan mudharabah, musyarakah dan dana pihak ketiga mempengaruhi profitabilitas (ROA) secara positif signifikan secara simultan. Uji Determinasi (R2) sebesar 0,9376 atau 93,76% pada level of significant 5%.
We Speak—Britten, We Hear—Mila
Authors: Лепорк А.К. 
Published: October 2023

Искусствовед, научный сотрудник Государственного Эрмитажа Алексей Лепорк вспоминает музыковеда, доктора искусствоведения, профессора Санкт-Петербургской государственной консерватории имени Н. А. Римского-Корсакова Людмилу Григорьевну Ковнацкую. Благодаря исследовательской и организационной деятельности Людмилы Ковнацкой в России состоялись фестивали, конференции, концерты, посвященные английской классической музыке, и в первую очередь Бенджамину Бриттену. В некрологе раскрываются не только профессиональные заслуги, но и выдающиеся личные качества Л. Г. Ковнацкой.
Art historian and researcher at The State Her­mitage Alexei Leporc recalls musicologist, Doctor of Art Criticism, professor at Rimsky-Korsakov St. Peters­burg State Conservatory Lyudmila Kovnatskaya. Thanks to the research and organizational activities of Kov­natskaya, festivals, conferences, and concerts dedicated to English classical music and, primary, to Benjamin Britten took place in Russia. The obituary reveals the professional merits and the outstanding personal qualities of L. G. Kovnatskaya.
Correspondence of B. V. Asafyev and S. S. Prokofiev in the Collection of Columbia University
Authors: Савкина Н.П. 
Published: October 2023

В статье впервые опубликованы все ранее не издававшиеся письма Б. В. Асафьева С. С. Прокофьеву и несколько писем Прокофьева Асафьеву 1925–1935 годов, хранящиеся в Архиве Сергея Прокофьева Колумбийского университета (Нью-Йорк). Представленные документальные источники содержат новые сведения о круге интересов и деятельности оте­чест­венного ученого, композитора и му­зыкаль­ного писателя Б. В. Асафьева. Выясняются ранее неизвестные жизненные обстоятельства, в непривычном свете предстают факторы творческие. Асафьев в своих письмах пишет о крупнейших музыкантах и деятелях искусства XX века. Документы обновляют существую­щие знания об истории проигранной борьбы за постановку в Ленинграде прокофьевского «Игрока»; о битвах за подлинного «Бориса Годунова»; о плодо­творной, давшей множество впечатле­ний поездке Асафьева в Европу в 1928 году. Один из сюжетов корреспонденции — книга о Прокофьеве, которую Асафьев планировал написать. За полями этой переписки угадываются трагические перипетии советской истории и жестокой политической цензуры в СССР. Глубокие музыкантские наблюдения сопровождают реакцию ученого на новые произведения Прокофьева.
This material contains the introductory article and the first publication of all previously unpublished letters from Boris Asafyev to Sergey Prokofiev and several letters from Prokofiev to Asafyev dated 1925–1935. These letters are kept in The Serge Prokofiev Archive at Columbia University, New York. These docu­mentary sources provide updated information about the range of interests and activities of Boris Asa­fyev—a Russian scholar, composer, writer and mu­sic critic. Previously unknown life circumstances are investi­gated, and creative aspects are rendered in a new light. In his letters, Asafyev writes about the most significant musicians and artists of the 20th century. These documents reveal new information about the lost battle for the staging of Prokofiev’s “The Gambler” in Leningrad, the struggle for authentic “Boris Godunov,” and Asafyev’s productive and insightful trip to Europe. One of the correspondence topics is a book about Prokofiev, which Asafyev was planning to write. Tragic twists and turns of Soviet history and severe political censorship in the USSR can be read between the lines of these letters. The scholar’s response to Prokofiev’s new works intertwines with the profound observations of a professional
Performance Theory of Music
Authors: Медушевский В.В. 
Published: October 2023

Автор предлагает свой взгляд на теорию музыки, отмечая ее теснейшую связь с исполнительской практикой. Поднимаются вопросы о том, как воспитать чуткий слух музыканта-исполнителя, опираясь на тонкости гармонического анализа; раскрываются оригинальные понятия синергии и вероя­тия. Автор подчеркивает особую роль цезуры как важнейшего элемента музыкальной ткани, ее отличия от эмфатического акцента, глубинно связанного с гармонией. В статье выдвигаются критерии онтологизма в му­зыкальном произведении, а также в его интерпретации исполнителем.
The author offers his own view on the theory of music and its closest connection with performing practice. Questions are raised about how to cultivate a sensitive ear of a performing musician, based on the subtleties of harmonic analysis, and original concepts of synergy and probability are revealed. The author emphasizes the unique role of caesura as an essential element of music, its difference from the emphatic accent, which is deeply connected with harmony. The article proposes criteria for ontologism in a piece of music and its interpretation by the performer.
Synthesis, Characterization, and Antibacterial Properties of mixed ligand Complexes of (L-leucine and 8-hydroxyquinoline) with Fe (III ),Cr (III) La(III)) and Ru(III ) ions
Authors: Taghreed H. Al- Noor  , Shifaa  Jameel   Ibraheem  , Ibtihaj Kadhim Malih  
Published: October 2023

The research includes the synthesis and identification of the mixed ligands complexes of M+3 Ions in general composition ,[M(Leu)2(Q)]
Where L-leucin (C6H13NO2)symbolized as( Leu H) as a primary ligand and
8-hydroxyqinoline,(C9H7NO) symbolized as (8-HQ) as a secondary ligand .
The ligands and the metal chlorides were brought in to reaction at room temperature in ethanol as solvent. The reaction required the following molar ratio [(1:1:2)(metal): Q-:2Leu-] with M(III ) ions, were
M(III) = Fe (III ),Cr (III) La(III)) and Ru(III )
The reaction gave solid crystalline complexes which have been characterized us the following techniques: Thermal stability, Solubility, Molar conductivity, Determination the percentage of the metal in the complexes by (AAS). Spectroscopic Methods [FT-IR and UV-Vis], and. The proposed structure of the complexes using program, chem. office 3D(2006) .], Biological effects for some complexes were investigated .
Numerous papers have been published on metal complexation of amino acids and derivatives during the past ten years. Metal amino acid complexes have long been of interest as models for metal –Ligand systems and interaction which may occur in nature(1)Biological importance of several amino acids their complexes with transition metals is well documented(2-3)The amino acid L- leucin and various transition metals are important in the biological functions of humans, animals, and plants. L- leucine is one of the twenty major amino acids and is considered an essential amino acid (4)
8-hydroxyqinoline or 8-qinolineis an organic compound with the formula C9H7NO2 is the name most commonly used ,while its trivial name is (oxine),which is conventionally used for the description of chelate compounds Oxinates ,as out of seven possible hydroxyqinoles, only 8-hydroxyqinoline forms chelate with metal ions . [5-6]
Ruthenium polypyridyl and phenanthroline complexes have been extensively investigated because of their interesting photochemical[7],catalytic [8], biological [9] and electrochemical [10,11] properties.
Lanthanide(III) carboxylates have been widely studied in recent years due to their physico-chemical properties, variety of structural types and potential uses as fluorescent sensors. The isomers of mono-,di- and trimethoxybenzoates of rare earth elements(III) have been examined. [12-13]
A series of ruthenium metal complexes involving mono-sulfonylated non-innocent o-phenylenediamine ligands have been characterized in detail using NMR, MS, FT-IR, X-Ray, UV-vis and electrochemical studies. [14]
In this paper we present the synthesis and study of Cr(III),Fe(III) La(III) and Ru(III) complexes with amino acid (L-leucin) as a primary ligand and 8-hydroxyqinoline as a secondary ligand have been used, respectively.
Nurses' Performances Regarding Infection Control Standard Precautions at Shar Teaching Hospital in Sulaimani City
Authors: Mohammed Atiya , Abdulqadir Zanwer Sabir 
Published: October 2023

Background: Standard precautions include hand washing, protective equipment, respiratory hygiene, sharps safety, injection techniques, patient care, waste disposal, and disinfected surfaces for infection control.
Aim: the study aimed to evaluate Nurses' Performances Regarding Infection Control Standard Precautions, and the Association between the Practices of Nurses and Sociodemographic Characteristics.
Methods: This study used a descriptive observational design to study 212 nurses in all departments at Shar Teaching Hospital in Sulaimani. A probability-based sampling method was used, and data were collected from March 15, 2022, to September 20, 2022. The questionnaire involved questions about the nurses' demographics and their work environment.
Results: The result of the study indicates that (39.6%) of the nurses have good performance regarding infection control standard precautions, and there was a statistically significant association between nursing performance concerning age, level of education and employment
Conclusion: only half of the participants had good infection control practices. Factors that affected this level of practice were found.