bluuebunny/crossref_metadata_2025_split huggingface dataset:
SCIENTIFIC HERITAGE OF THE DEPARTMENT «OIL AND GAS TECHNOLOGY» OF USPTU
Authors: Михайлова Н.Н. , Гасан-заде Э.И. , Шавшукова С.Ю. , Ахметов А.Ф. , Удалова Е.А. 
Published: July 2024

В продолжение комплексных исследований, посвященных становлению и развитию научных школ Уфимского государственного нефтяного технического университета, проведен обзор научных работ, выполненных на кафедре «Технология нефти и газа» Уфимского государственного нефтяного технического университета в период 1950–2020 гг. Представлены результаты научной деятельности видных ученых-педагогов кафедры. Показано, что научные исследования всегда были направлены на решение актуальных проблем нефтепереработки и нефтехимии. Охарактеризованы современные направления исследований, основной задачей которых является комплексная переработка нефти и снижение экологической нагрузки на окружающую среду в результате производства и потребления продуктов переработки углеводородного сырья.
In continuation of the comprehensive research devoted to the formation and development of scientific schools of the Ufa State Petroleum Technological University, a review of scientific works performed at the Department of Oil and Gas Technology of the Ufa State Petroleum Technological University in the period 1950–2020’s was conducted. The results of scientific activity of prominent scientists-teachers of the department are presented. It is shown that scientific research has always been aimed at solving urgent problems of oil refining and petrochemistry. The modern directions of research are characterized, the main task of which is complex oil refining and reducing the environmental burden on the environment as a result of the production and consumption of products of processing of hydrocarbon raw materials.
Type of gudok with fl at decks on written and fine sources of the XVIII century
Authors: Устюгова А.В. 
Published: July 2024

Сравнительно-типологический анализ смычкового инструментария на русских книжных миниатюрах, гравюрах и лубочных картинках XVIII века в сопоставлении с письменными источниками позволил сделать вывод о существовании нескольких типов гудка в русской музыкальной культуре. В настоящей статье рассматривается тип гудка с плоскими деками. В результате исследования нами выделены основные конструктивные особенности гудка с плоскими деками: округлый корпус, плоские деки (верхняя и нижняя), пуговица, прямоугольный подгрифок, длинный гриф без ладов с головкой в виде завитка, три или четыре струны и прямой или лукообразный смычок. На наш взгляд, появление гудка с плоскими деками обусловлено развитием гудочного исполнительства (введение новых приемов игры, расширение репертуара), что способствовало усовершенствованию инструмента. Очевидно, что процессы изменения конструкции гудка проходили под влиянием скрипки, которая в этот период приобретала популярность в России. Гудок с плоскими деками бытовал в русской музыкальной культуре на протяжении XVIII–XIX веков.
Comparative-typological analysis of bow instruments on Russian book miniatures and popular prints in comparison with written sources allowed to draw a conclusion about the existence of several types of the Gudok in Russian musical culture. In this article, we consider the type of Gudok with flat decks. As a result of the study, we identifi ed the main structural features of Gudok with flat decks: a rounded case, fl at decks (upper and lower), a button, a rectangular under-grab, a long neck without fret with a curved head, three or four strings and a straight bow with a slight defl ection the end of the cane. In our opinion, the appearance of the Gudok with fl at decks is due to the development of performance (the introduction of new techniques of the game, the expansion of the repertoire), which necessitated the improvement of the instrument. Obviously, the process of changing the design of the Gudok was infl uenced by the violin, which in this period is gaining popularity in Russia. The Gudok with fl at decks existed in the Russian musical culture throughout the XVIII-th and XIX-th centuries.
Methods of the state variables criterion of the degree of observability using of in the federative Kalman filter
Authors: ПРОЛЕТАРСКИЙ А.В. , ЧЖАН Л. , СЕЛЕЗНЕВА М.С. , НЕУСЫПИН К.А. 
Published: July 2024

Рассмотрены структурные схемы реализации федеративного фильтра Калмана. Повышение точности федеративного фильтра Калмана предложено осуществлять с помощью численного критерия степени наблюдаемости переменных состояния оцениваемого процесса. Исследованы схемы федеративного фильтра Калмана с обратной связью и без обратной связи. Критерий степени наблюдаемости использован для определения поправочных коэффициентов на этапе слияния информации в федеративном фильтре Калмана. Эффективность разработанных модификаций федеративного фильтра Калмана продемонстрирована на примере оценивания погрешностей инерциальной навигационной системы летательного аппарата.
Structural schemes for implementing the federative Kalman filter are considered. An increase in the accuracy of the Kalman filter is proposed to implemented with the help of a numerical criterion of the degree of observability of the evaluated process state variables. The schemes of the federated Kalman filter with feedback and without feedback are investigated. The criterion of the degree of observability is used to determine the correction coefficients at the stage of information merging in the. The efficiency of the developed modifications of the federative Kalman filter is demonstrated by the example of estimating the errors of the inertial navigation system of an aircraft.
Diagnostics of the optical interference field
Authors: ТУРУХАНО Б.Г. , ТУРУХАНО Н. , ЛАВРОВ Ю.М. 
Published: July 2024

Роль точных измерений, которые осуществляются интерференционными методами в современной науке к технике, быстро возрастает благодаря созданию лазеров и развитию электроники. В последние годы область применения голографических интерферометров существенно расширилась, особенно в области создания линейных измерительных систем [1…4]. Большое значение приобретает рассмотрение вопросов, связанных с исследованием причин, влияющих на форму и распределение интерференционных полос в интерферометре. В работе обосновывается требования к оптическим узлам интерферометров, точности их установки и юстировки, выявление источников погрешностей измерения и т.д. Так же анализируются фазовые искажения интерференционного поля (ИП) в выходной апертуре 2-х лучевого оптического интерферометра, использующего в качестве источника He-Ne лазер и мало аберрационные оптические элементы с целью создания качественных плоских волновых фронтов.
The role of accurate measurements, which are carried out by interference methods in modern science to technology, is rapidly growing due to the creation of lasers and the development of electronics. In recent years, the field of application of holographic interferometers has expanded substantially, especially in the field of creating linear measurement system encoders [1…4]. Of great importance is the consideration of questions connected with the investigation of the causes of the interference fringes affecting the shape and distribution of interferometers in the interferometer, the justification of the requirements for optical nodes of interferometers and the accuracy of their installation and alignment, the detection of sources of measurement errors, etc. In this paper, phase distortions of the interference field (IP) in the output aperture of a 2-beam optical interferometer using as coherent He-Ne laser light and little aberration optical elements with the aim of creating qualitative plane wave fronts.
Kandungan Makronutrien dan Mineral Esensial pada Gastropoda Nerita undulata Asal Pulau Lemukutan
Authors: Lukas Novan Luis Pernando , Warsidah Warsidah , Nurdiansyah Syarif Irwan 
Published: July 2024

Banyaknya ragam jenis gastropoda (siput laut) membuat peranan dan manfaat dari gastropoda dapat berpotensi besar sebagai penelitian, kurangnya pengolahan dan pengetahuan tentang manfaat, kandungan makronutien dan mineral esensial pada gastropoda maka perlu adanya penelitian mengenai hal tersebut. Penelitian ini bertujuan untuk mengetahui apa saja kandungan makronutien yang terkandung dalam daging Nerita undulata dan mengetahui kandungan dan kadar mineral esensial dalam Nerita undulata yang berlokasi di Perairan Pulau Lemukutan, Teluk Cina, Kabupaten Bengkayang, Kalimantan Barat. Pengamatan dilakukan dengan metode hand sampling, yang mana dalam pengambilan sampel menggunakan tangan yang dilengkapi glove. Hasil penelitian yang didapatkan dari gastropoda N. undulata kandungan proksimat dari karakteristik kadar abu, protein dan lemak secara berturut sebesar 0,31%, 57,84% dan 1,44%. Sedangkan hasil kandungan mineral esensial dengan karakteristik Cu, Fe, Zn dan Mn secara berturut sebesar 0,0895 mg/kg, 0,2738 mg/kg, 0,1608 mg/kg dan 0,0218 mg/kg.
Penerapan Metode Problem Based Learning dalam Pembelajaran Keterampilan Menulis Teks Eksplanasipada Peserta Didik Kelas VIII SMP Negeri 1 Kembang Jepara Tahun Pelajaran 2019/2020
Authors: Setyawan Muhammad Handika 
Published: July 2024

Penelitian ini bertujuan mendeskripsikan penerapan metode Problem Based Learning dalam pembelajaran keterampilan menulis teks eksplanasi pada peserta didik kelas VIII SMP Negeri 1 Kembang Jepara tahun pelajaran 2019/2020‖. Salah satu metode pembelajaran untuk menumbuhkan minat peserta didik dalam pembelajaran keterampilan menulis teks eksplanasi pada adalah metode Problem Based Learning.Tujuan metode pengumpulan data dalam penelitian ini adalah teknik tes dan Nontes. Teknik tes dilakukan berupa nilai menulis teks eksplanasi, sedangkan teknik Nontes berupa lembar angket, wawancara, observasi, dan dokumentasi. Pendekatan yang digunakan dalam penelitian ini adalah kualitatif. Populasi dalam penelitian ini sebanyak enam kelas. Sampel dalam penelitian ini adalah kelas VIII sebanyak 32 peserta didik. Teknik penyajian analisis data dalam penelitian ini dilakukan secara deskriptif kualitatif, yaitu dalam penyajiannya menggunakan kata-kata sebagai pendeskripsiannya tentang keadaan peserta didik dalam kemampuan keterampilan menulis teks eksplanasi dengan menggunakan penerapan metode Problem Based Learning. Hasil penelitian tersebut dilihat dari kemampuan keterampilan menulis teks eksplanasi dengan menggunakan metode Problem Based Learning dengan rata-rata nilai 71, nilai tertinggi 90 sebanyak 1 peserta didik, nilai terendah 50 sebanyak 2 peserta didik.
ANALISIS RESTRUKTURISASI SEBAGAI PENYELESAIAN PEMBIAYAAN MURABAHAH BERMASALAH (STUDI KASUS PT. BANK SUMUT KANTOR CABANG PEMBANTU SYARIAH BINJAI)
Authors: Ningsih Devi Aprilia , K Kamilah , Nasution Juliana 
Published: July 2024

Pembiayaan yang telah diberikan bank kepada pihak lain atau nasabah harus dikembalikan nasabah dalam jangka waktu tertentu dan sesuai dengan kesepakatan diawal akad. Namun, dalam praktiknya pelaksanaan pembiayaan di PT. Bank Sumut Kantor Cabang Pembantu Syariah Binjai terkadang dijumpai cidera janji atau tidak berjalan sebagaimana yang telah disepakati antara kedua belah pihak pada awal akad. Adapun risiko-risiko yang harus dihadapi pihak bank yaitu salah satunya nasabah tidak dapat mampu mengembalikan pembiayaan yang telah diberikan oleh PT. Bank Sumut Kantor Cabang Pembantu Syariah Binjai. Tujuan peneliti untuk mengetahui penerapan restrukturisasi dalam penyelamatan pembiayaan murabahah bermasalah dan juga untuk mengetahui faktor penyebab pembiayaan murabahah bermasalah bisa terjadi. Penelitian ini menggunakan metodologi penelitian kualitatif deskriptif. DenganÂ menggunakanÂ metodeÂ pengumpulanÂ datanyaÂ yaitu dengan cara wawancara, dokumentasi dan observasi. Adapun hasil penelitian ini menunjukkan bahwa PT. Bank Sumut Kantor Cabang Pembantu Syariah Binjai melakukan restrukturisasi dengan cara penjadwalan kembali (Rescheduling), persyaratan kembali (Reconditioning), dan penataan kembali (Restrukturing).Penyebab pembiayaan murabahah bermasalah disebabkan oleh faktor internal atau yang berasal dari pihak bank itu sendiri tetapi ini jarang terajdi di PT. Bank Sumut Kantor Cabang Pembantu Syariah Binjai dan faktor eksternal atau yang berasal dari nasabah itu sendiri dengan cara sengaja ataupun tidak sengaja. Faktor eksternal ini merupakan faktor yang sering ataupun dominan yang menyebabkan pembiayaan murabahah bermasalah.
Investigasi Sistem Pemasaran Produk Halal Olahan Edamame Mitratani 27 Kabupaten Jember
Authors: Faqih Ach , Hannan Fais Faizul , Umbara Bastomi Dani , Ashlah Izzul 
Published: July 2024

Marketing is very important in the world of business or entrepreneurship, whether large scale or small, medium or large scale. Marketing is an accomplice of leading companies. As the company's front line in achieving profits, of course, the people in this section must have reliable abilities, be active, and also not give up easily when facing business competition to win market share of the business they rely on. In this case, it is very important to implement marketing strategies at PT Mitratani Dua Tujuh in order to meet the needs and desires of customers on a national and international scale. This type of research uses field research. This research is based on the researcher's interest in Edamame Processed Products PT. Mitra Tani Dua Tujuh, especially in marketing strategies for halal products (PT. Mitra Tani Dua Tujuh) PT. Mitratani Dua Tujuh begins with the production process to the edamame marketing process which involves many parties. With collaboration between business partners, edamame has been successfully marketed to local and international markets. The network involved in the production process is all PT employees. Mitratani is involved in the process of providing raw materials, the edamame cultivation process, and the edamame processing process in the factory. The network involved in the marketing process is all parties or institutions involved in the marketing process of PT Mitratani products, such as Mitratani 27 Outlate distributors, IKBI (Wives' Extended Family Association) Mitra Tani 27 employees, PT Perkebunan Nusantara, PT Rolas Medika Nusantara, UPTPS Tresna Werdha Jember, the Agro-Industry Workers Union (SPA) and several agencies that collaborate with Mitra Tani 27 Jember.
Real Division Algebras with Left Unit Satisfying Some Identities.
Authors: Diabang André Souleye , Mballo Ama Sékou , Diop Pape Cheikhou 
Published: July 2024

We study A, finite dimensional real division algebra with left unit $e$, satisfying: for all $x\in A$,\\\ (\textbf{E1}) \ \ $(x,x,x)=0$, \ \ \ (\textbf{E2}) \ \ $(x^2,x^2,x^2)=0$, \ \ \ (\textbf{E3}) \ \ $x^2e=x^2$ \ \ and \ \ (\textbf{E4})\ \ $(xe)e=x$.\\We show that:$\bullet$ If $A$ satisfies to (\textbf{E1}), then e is the unit element of $A$.$\bullet$ $(\textbf{E1})\Longrightarrow (\textbf{E2})\Longrightarrow (\textbf{E3})\Longrightarrow (\textbf{E4})$.\\In two-dimensional, we determine $A$ satisfying (\textbf{Ei}$)_{i\in\{1,2,3,4\}}$. We have$$\begin{tabular}{|c|c|c|c|c|} \hline % after \\: \hline or \cline{col1-col2} \cline{col3-col4} ... A \ satisfies to & (E1) & (E2) & (E3) & (E4) \\\hline A \ isomorphic \ to & $\mathbb{R}$; $\mathbb{C}$ & $\mathbb{R}$; $\mathbb{C}$; $^{\star}\mathbb{C}$ & $\mathbb{R}$; $\mathbb{C}$; $^{\star}\mathbb{C}$ & $\mathbb{R}$; $\mathbb{C}$; $^{\star}\mathbb{C}$; $\mathcal{L}(1, -1, \gamma, 1)$\\ \hline \end{tabular}$$ We showas well as$(\textbf{E1})\Longrightarrow (\textbf{E2})\Longleftrightarrow (\textbf{E3})\Longrightarrow (\textbf{E4})$.\\We finally study the fused four-dimensional real division algebras satisfying (\textbf{Ei}$)_{i\in\{1,2\}}$. We have shown thatthose which verify (\textbf{E2}) are $\mathbb{H}$, $^{\star}\mathbb{H}$ and $\mathbb{C}\oplus \mathbb{B}$. and that $\mathbb{H}$ is the only fused algebra division with left unit satisfies to (\textbf{E1}).
On $\psi$ gs-Functions in Bitopological Spaces
Authors: Tutanes Lezel Mernilo 
Published: July 2024

A subset $A$ of a bitopological space $(X,\tau_1,\tau_2)$ is called \emph{$(i,j)$-$\psi$gs-closed} set if\\ $(i,j)\text{-}\psi cl(A)\subseteq U$ whenever $A\subseteq U$, $U$ is $(i,j)$-semi-open in $(X,\tau_1,\tau_2)$. In this work, the propertiesof this set are considered to investigate the concepts of $\psi gs$-functions in bitopological spaces. Specifically, this study establishes some properties and provide characterizations of $\psi gs$-open and $\psi gs$-closed functions, $\psi gs$-continuous functions, and $\psi gs$-irresolute functions in bitopological spaces.
Two-Warehouse Inventory Model: Interval Valued Costs, Advanced Payment, Stock-Dependent Demand, and Partial Backlogging
Authors: Ahmed Ashfar , Kummari Krishna , Bandaru Ravikumar , Shukla Rahul 
Published: July 2024

A great deal of inventory costs are typically unpredictable because of the unpredictability of a competitive market. The fluctating demand from customer's and the unpredictability of the market economy make it difficult for researchers and operation research practitioners to appropriately replicate an inventory problem. In order to prevail this type of unpredictability circumstances, in this paper, we have represented the inventory parameters as interval. Using this concept, we progressed a two-warehouse inventory model for deteriorating items with a fixed Shelf life, partially backlogging shortages and interval-valued deterioration rate. In addition to this the parameters like ordering cost, purchase cost, shortage cost, deterioration cost for both the rented and owned warehouse except the backlogging parameter have been considered as interval-valued. The uncertainty in the inventory parameters motivated us to view them as interval-valued in the present research. Based on the assumptions, the cost function of this problem is a highly nonlinear constraint optimization problem. Mathematica is used to tackle this nonlinear optimization problem. A numerical example has been presented to demonstrate the computational result. Then, a sensitivity analysis has been performed to study the effect of changes of different parameters of the model on the optimal policy.
Exploring the Associated Groups of Quasi-Free Groups
Authors: Alotaibi Abdulaziz Mutlaq , Aljamal Khaled Mustafa 
Published: July 2024

If G is a cyclic group, then H (G) is a trivial group and if G= G1*...*Gn is the free product of the groups G1,..., Gn, then H(G)= H(G1*...*Gn) isomorphic of H (G1)*...*H(Gn). Furthermore, if the groups G1, G2,..., Gn are cyclic groups, then H(G) is a trivial group. In this paper we show that for every group G there exists a group denoted H (G) and is called the associated group of G satisfying some important properties that as application we show that if F is a quasi-free group and G is any group, then F(H) is trivial and H(F*G) isomorphic H(G), where a group is termed a quasi-free group if it is a free product of cyclic groups of any order.
Some Identities on λ-Analogues of Lah Numbers and Lah-Bell Polynomials
Authors: Kim Dae San , Kim Taekyun , Kim Hyekyung , Kwon Jongkyum 
Published: July 2024

In recent years, some applications of Lah numbers were discovered in the real world problem of telecommunications and optics. The aim of this paper is to study the λ-analogues of Lah numbers and Lah-Bell polynomials which are λ-analogues of the Lah numbers and and Lah-Bell polynomials. Here we note that λ-analogues appear when we replace the falling factorials by the generalized falling factorials in the defining equations. By using generating function method, we study some properties, explicit expressions, generating functions and Dobinski-like formulas for those numbers and polynomials. We also treat the more general λ-analogues of r-Lah numbers and r-extended λ-Lah-Bell polynomials. In addition, we show that the expectations of two random variables, both associated with the Poisson random variable with parameter α , are equal to the λ-analogue of the Lah-Bell polynomial evaluated at α for one and the r-extended λ-Lah-Bell polynomial evaluated at α for the other.
Calcinated Ferronickel Slag as Catalyst In Biodiesel Synthesis from Cooking Oil
Authors: Sitanggang Boy Chandra , Aras Neny Rasnyanti M. 
Published: July 2024

Ferronickel slag is a byproduct of the nickel ore smelter factory that is typically dumped in an open area and is detrimental for the environment. The research objectives are to examine ferronickel slag potential as catalyst in producing biodiesel. Ferronickel slag was prepared by milling followed by sieving 200 meshes and calcinated at 900 ºC. The next step was to evaluate the calcinated slag using XRF, which revealed that the major components were, in order, Si (49.47%), Fe (36.09%), Ca (7.12%), Cr (3.01%), and Mn (2.28%). Slag that has been calcined and utilized in the transesterification of cooking oil as catalyst in three necked flask with oil to methanol ratio is 1:9, reaction times (1, 2, 3 hours) and temperatures (70, 90, 110 oC). Then, the product were tested for water content, density, viscosity, acid number, free fatty acids, total glycerol, percent of methyl esters according to SNI 7182-2015. FTIR showed the presence of peaks at 1743.65 and 1157.29 corresponding to C=O and O-CH3 functional groups.
Alokasi Dana Desa Terhadap Kesejahteraan Masyarakat di Desa Hatunuru Kecamatan Taniwel Timur Kabupaten Seram Bagian Barat
Authors: Nussy Dessy Natallia , Leuwol Ferdinand Salomo , Lasaiba Mohammad Amin 
Published: July 2024

Pembangunan daerah dan pembangunan desa yang merupakan bagian dari pembangunan nasional mempunyai tujuan untuk meningkatkan kapasitas pemerintah daerah dalam memberikan pelayanan kepada masyarakat dan juga meningkatkan kemampuan daerah dalam pengelolaan sumberdaya ekonomi secara efisien untuk kemajuan daerah dan kesejahteran masyarakat. Penelitian ini bertujuan untuk mengetahui Alokasi Dana Desa Terhadap Kesejahteraan Masyarakat di Desa Hatunuru Kecamatan Taniwel Timur Kabupaten Seram Bagian Barat. Metode penelitian ini menggunakan metode kualitatif deskriptif. Berdasarkan hasil penelitian dapat disimpulkan bahwa Dalam pengelolaan keuangan dana desa sudah dapat dikatakan memenuhi taraf kepuasan. Demi kesejahteraan masyarakat maka pemilihan perangkat desa dilakukan dengan sangat selektif. Keberhasilan pembangunan pada Desa Hatunuru sudah dapat dikatakan sangat baik dimana setiap masyarakat setempat sangat merasakan dampak dan maafaat dari alokasi dana desa, setidaknya masyarakat sudah merasa adil dalam pengalokasian dana desa.
Kata kunci : Alokasi Dana Desa dan Kesejahteraan Masyarakat