bluuebunny/crossref_metadata_2025_split huggingface dataset:
Controls on the geochemistry of southern African prehnite
Authors: Elburg M.A. , Cairncross B. 
Published: March 2022

Abstract
Eight samples of prehnite from southern Africa were analysed for their major and trace element geochemistry to investigate the controls on their compositions. Variations in the major elements are limited (Fe3+-Al exchange, limited enrichment in Mn), and trace elements typically occur at levels &lt;10 ppm, apart from Ga and sometimes Ti. The main control on the low trace element contents appears to be the small size of the crystallographic sites. Nevertheless, variations were observed in several elements, such as B, Ti, Sc, W, Mo, As and the rare earth elements. These variations imply a control by the host rock and its surrounds, as well as the identity of co-existing minerals.
The diagnostic dilemma of an exudative pleural effusion and the emerging role of thoracoscopic pleural biopsy in these patients: A study from South India
Authors: Sud Rahul , Mujeeb V. R. , Tilak TVSVGK , Darling H. S. , Kapoor Amul , Patra Arun Kumar 
Published: March 2022

Objectives:
Pleural effusion is one of the common presentations of several several diseases in clinical practice. The pathology behind a pleural effusion is often not clear on pleural fluid analysis. In developing countries like India, empirical antitubercular treatment is started assuming exudative pleural effusion to be tuberculosis. Over some time with more emphasis on evidence-based medicine, this is not a right approach. Thoracoscopic examination and biopsy visceral are a minimally invasive procedure which is underutilized in our practice. The study was conducted to evaluate the definitive etiological diagnosis of exudative pleural effusion and to analyze the diagnostic yield of thoracoscopic biopsy in the diagnosis of exudative pleural effusion.

Material and Methods:
The study was conducted in the Department of Medicine and Oncology, Command Hospital Airforce, Bengaluru, India. All adult patients with exudative pleural effusion (according to light’s criteria) reporting to the hospital from January 2019 to December 2020 were included and subjected for analysis.

Results:
Out of a total of 100 patients who were included in the study, there was male predominance with 78 males and 22 females. Thoracoscopic biopsy remained conclusive in 100% of cases. Malignancy was the most common etiology with 48% of cases while tuberculosis was seen in 38%, 12% had inflammation, and 2 (02%) had mucormycosis. TB PCR sensitivity and specificity of TB PCR were 42% and 100%, respectively. MTB culture showed sensitivity of 11%. MTB culture of biopsy showed sensitivity of 26%. The specificity in both the methods was 100%.

Conclusion:
Thoracoscopy is an ideal method for the diagnosis of pleural effusion with suspected exudative pathology. It gives an accurate diagnosis and helps differentiate between tuberculosis and malignancy which are the most common etiologies in India, thereby leading to early appropriate and specific treatment in such patients. Malignancy was the most common etiology in our study.
Numerical computation of gravity force using solution of an auxiliary boundary value problem and the calculation of a surface integral
Authors: Вабищевич Петр Николаевич , Иванов Дьулус Харлампьевич 
Published: March 2022

Предложен численный метод определения вертикальной силы тяжести рудного тела. Метод состоит из двух процедур: решения вспомогательной краевой задачи для уравнения Пуассона в ограниченной области с граничным условием третьего рода и вычисления поверхностного интеграла по границе этой области. Вычислительная реализация базируется на применении метода конечных элементов для численного решения вспомогательной краевой задачи и квадратурной формулы для вычисления поверхностного интеграла. Исследуется влияние параметра, входящего в граничное условие третьего рода, порядка конечных элементов и размера расчетной области на точность решения прямой задачи гравиметрии. Приведены численные результаты для модельной задачи c однородным рудным телом в форме прямоугольного параллелепипеда.
Purpose. We consider numerical calculation of the vertical component of the gravity force produced by the ore body using solution of an auxiliary boundary value problem (BVP) for the Poisson equation in a bounded domain. Methodology. Auxiliary BVP can be posed according to the gravitational potential or the vertical gravity force itself supplied by a homogeneous Robin boundary condition. The use of Green’s third formula to the solution of the BVP leads to an equivalent definition of the vertical gravity force based on the calculation of the surface integral. The numerical solution of the auxiliary BVP is based on standard finite element method, the calculation of the surface integral relies on Gauss quadrature formula. In the surface integral, Green’s function for the Laplace operator in an unbounded domain is evaluated using a polynomial approximation or an analytical representation. Findings. Numerical calculations of a model problem with a homogeneous prismatic body has shown that the method based on the solution of the auxiliary BVP for the vertical gravity force itself with a large value of the scalar parameter in the Robin boundary condition and analytical representation of the Green’s function in the surface integral is the most effective method for approximating the vertical gravity force. For this method, we obtained the second order convergence rate. Originality/value. The considered auxiliary BVP with the Robin boundary condition allows obtaining a sufficiently good approximation of the vertical gravity force.
Finite element method: Proof of the existence for the accuracy limit when applying one-dimensional linear finite elements
Authors: Винник Петр Михайлович , Винник Татьяна Викторовна , Хакимов Андрей Айратович 
Published: March 2022

Для решения уравнений в частных производных широко используется метод конечных элементов. В процессе решения получается разреженная система линейных алгебраических уравнений с сингулярной матрицей. Известно, что точность решения систем линейных уравнений зависит от числа обусловленности матрицы системы. Ранее было предложено оценивать число обусловленности для сингулярных матриц, используя их ненулевые собственные числа, как для регулярных матриц. В статье аналитически вычислены все собственные числа матрицы жесткости, возникающей при решении одномерной задачи с использованием одинаковых линейных конечных элементов. Приведены оценка числа обусловленности матрицы и его асимптотика. Показано, что общепринятый путь повышения точности расчетов методом конечных элементов, состоящий в измельчении элементов, имеет теоретический предел точности.
The finite element method is widely used to solve partial differential equations. The process of solving leads to a sparse system of linear algebraic equations with a singular matrix. It is known that the accuracy of solving systems of linear equations depends on the condition number of the system matrix. Previously, it was proposed to estimate the condition number for singular matrices using their non-zero eigenvalues, as for regular matrices. In the article, all eigenvalues of the stiffness matrix that arises when solving a one-dimensional problem using the same linear finite elements and all possible regularizations of the stiffness matrix - matrices obtained by deleting the row and column containing the selected diagonal element are analytically calculated. It is shown that for a stiffness matrix with an odd number of rows, the smallest of the condition numbers of regularization matrices is less than the number previously proposed as the condition number of a singular matrix. However, they are asymptotically equal. An estimate for the condition number of the matrix and its asymptotics are given. It is shown that the generally accepted method to increase the accuracy of calculations by the finite element method, which consists in element refinement, has a theoretical accuracy limit.
KAJIAN STRUKTUR PERKERASAN DAN SALURAN DRAINASE RUAS JALAN PUSPAHIYANG KABUPATEN TASIKMALAYA
Authors: Prima Gary Raya , Sari Novia Komala 
Published: March 2022

Jalan Puspahiang merupakan jalan yang dibangun oleh Pemerintah Kabupaten Tasikmalaya untuk menghubungkan Desa Puspahiang, Desa Puspasari, Desa Sukasari dan Desa Mandalasari. Jalan Puspahiang memiliki trase jalan asli ± 10 km (2 arah, 2 lajur tanpa median) dan lebar jalan 3,5 m. Saat ini kondisi ruas jalan tersebut sudah sangat rusak, baik perkerasan maupun saluran drainase. Hal ini dikhawatirkan akan mengganggu fungsi dari jalan tersebut. Oleh karena itu perlu dilakukan penelitian untuk mengkaji dan menganalisis kekuatan serta fungsi dari struktur perkerasan dan saluran drainase pada ruas jalan tersebut.Metode yang digunakan Untuk mengkaji kekuatan perkerasan, dilakukan dengan cara membandingkan nilai Indeks Tebal Perkerasan (ITP) Eksisting terhadap nilai Indeks Tebal Perkerasan (ITP) berdasarkan beban lalu lintas yang ada saat ini. Sedangkan untuk menganalisis saluran drainase dilakukan dengan cara membandingkan kapasitas debit saluran (Qs) yang ada dengan debit rencana (Qr).Berdasarkan hasil penelitian yang dilakukan dapat diketahui bahwa nilai ITP eksisting = 7,1 dan ITP saat ini = 7,9 (ITP Eksisting < ITP saat ini), artinya bahwa kondisi struktur perkerasan sudah tidak berfungsi dengan baik. Oleh karena itu diperlukan perbaikan struktur perkerasan berupa over lay. Dari hasil perhitungan tebal perkerasan yang diperlukan yaitu lapis pondasi bawah 10 cm, lapis pondasi atas 20 cm, dan lapis permukaan 9,5 cm. Sedangkan untuk saluran drainase diperoleh debit rencana (Qr) sebesar 0,546 m3/det, maka perlu direncanakan saluran drainase yang bisa menampung debit tersebut. Dari hasil perhitungan diperoleh saluran drainase berbentuk segi empat dari beton berdimensi 0,40 m x 0,768 m dengan debit saluran (Qs) sebesar 0,586 m3/det. Kata kunci: Jalan, struktur perkerasan, saluran drainase.
STUDI KOEFISIEN KUAT TEKAN BETON GEOPOLIMER PADA BERBAGAI UMUR
Authors: Aryanto Aryanto , Faisal - , Sutandar Erwin , Herwani - 
Published: March 2022

Paper ini menyajikan hasil penelitian secara eksperimental mengenai pemanfaatan limbah pembakaran batubara pembangkit listrik tenaga uap (PLTU) Suralaya berupa fly ash. Material ini digunakan sebagai bahan dasar pembuatan beton Geopolimer. Pengaruh molaritas larutan alkali activator terhadap kuat tekan beton yang dihasilkan dipelajari dalam riset ini. Penggunaan larutan sodium silikat dan sodium hidroksida dipilih sebagai larutan aktivatornya. Molaritas larutan sodium hidroksida yang digunakan adalah 10 M, 12 M dan 14 M. Benda uji dibuat berupa silinder beton berdiameter 10 cm dengan tinggi 20 cm sebanyak 3 buah setiap variabel sehingga total benda uji adalah 27 buah. Perawatan benda uji dilakukan pada suhu ruang dengan ditutup plastik untuk menghindari penguapan pada benda uji. Pembahasan di fokuskan pada koefisien kuat tekan beton geopolimer umur 7 dan 14 hari terhadap umur 28 hari. Dari hasil analisa diketahui koefisien kuat tekan beton geopolimer diperoleh berturut-turut 65.5 %, 84.8%, dan 100% untuk Beton NaOH 10 M. Kemudian beton dengan konsentrasi larutan sodium hidroksida (NaOH) 12 M berturut-turut 49.8 %, 80.4%, dan 100%. Selanjutnya capaian kuat tekan beton dengan konsentrasi NaOH 14 M pada umur 7, 14, dan 28 hari terhadap kuat tekan umur 28 hari berturut-turut adalah 59.6 %, 88.5%, dan 100%.
IMPELEMENTASI PERNYATAAN STANDAR AKUNTANSI KEUANGAN (PSAK) NO.109 DI INISIATIF ZAKAT INDONESIA
Authors: Utami Danita Astri , Anwar Moch. Khoirul 
Published: March 2022

This study discusses financial accouting standarss that must be used by Zakat Management Organizations (OPZ) as a from of transparency, and accountability to the public and government.The standards initiated by the Indonesian Accounting Association (IAI) namely, PSAK of number 109 concerning Zakat, Infaq/Alms. Accounting includes recognition and measurement, presentation and disclosure. In addition, it can increase the trust of muzaki to give their funds to official zakat institutions. One of them, namely the Inisiatif Zakat Indonesia (IZI) which has received the title of Fair without Exception in 2017. So, the research objective is obtained to determine the suitability of the application with PSAK of number 109. The research method used is qualitative. The regarding the stage analysis carried out by describing the treatment of recording the financial statements of the Inisiatif Zakat Indonesia (IZI) the compare it with PSAK of number 109. The results of this tudy concluded that the financial report made by Inisiatif Zakat Indonesia (IZI) were in accordance with PSAK of number 109.
DETERMINAN KEPUTUSAN PEMBELIAN JILBAB MELALUI ONLINE SHOP
Authors: Ramadhanty Rizki Nadia , Fikriyah Khusnul 
Published: March 2022

The development of information and communication technology is getting faster, all can be accessed easily via the internet, this has an impact on the innovation of shooping activities into online shopping. This research aims to determine the influence of lifestyle, trust, ease, price, time and cost efficiency, reference groups, quality of information, and promotion of hijab purchasing decisions through online shop. The type of research is quantitative with quantitative descriptive methods with some analysis techniques used are t test, F test and coefficient of determination test (R2). The results showed that lifestyle, price, time and cost efficiency, reference groups, quality of information, and promotion affect the purchasing decisions hijab through online shop, while trust and ease do not affect purchasing decisions hijab through an online shop. F test results show that lifestyle, trust, ease, price, time and cost efficiency, reference groups, quality of information, and promotion together have and affect on the purchasing decisions hijab on female students S1 Islamic Economics at State University of Surabaya through online shop
IMPLEMENTASI STRATEGI PEMSARAN PADA BIRO PERJALANAN UMRAH DALAM PERSPEKTIF PEMASARAN SYARIAH
Authors: Nurfauzia Vira , Fikriyah Khusnul 
Published: March 2022

The increase in Hajj registrants in Indonesia every year causes the pilgrimage queue to be longer which makes opportunities for Hajj and Umrah travel. However, there are some companies that are less responsible in conducting their business, so that makes some people lack trust in the Hajj and Umrah travel. This study aims to know the marketing strategy aplication of Umrah Travel Agency based on the perspective of sharia marketing. This marketing strategy needs to be carried out in order to increase the trust of prospective customers. The marketing strategies used in this research are the marketing mix of 9p + c (product, price, place, promotion, people, process, physical evidence, promise, patience, customer centrism). This study uses a descriptive qualitative approach with the case study method at PT. Nur Dhuha Wisata in Surabaya. The technique of data collecting uses interview, observation, and documentation. Based on the results of the study, the implementation of the marketing strategy undertaken by PT. Nur Dhuha Wisata has been appropriate with the principles of sharia marketing which consists of the principle of monotheism or piety, the principle of human unity or justice, and the principle of belief in the unity of the world and the hereafter.
pengaruh promosi dan literasi terhadap keputusan pembelian produk pegadaian syariah di Surabaya
Authors: Faransyah Rifky , Prabowo Prayudi Setiawan 
Published: March 2022

Otoritas Jasa Keuangan melakukan survey nasional terhadap tingkat literasi masyarakat indonesia sebanyak 8000 orang dari 20 provinsi dan menghasilkan hanya 14,85 persen yang terliterasi dengan baik .Adapun yang cukup terliterasi sekitar 38,89 persen dan tidak terliterasi sebesar 45,44 persen dan tingkat promosi yang dilakukan oleh pegadaian syariah dirasa kurang maksimal oleh masyarakat melalui survey awal yang dilakukan peneliti, maka dengan itu Penelitian ini bertujuam umtuk mengetahui pengaruh promosi dan literasi terhadap keputusan pembelian produk Pegadaian Syariah di Surabaya, baik secara parsial maupunn simultan. Sampel dalam penelitian ini sebanyak 100 responden yang merupakan nasabah Pegadaian Syariah. Penelitian ini menggunnakan model linier berganda untuk memperoleh jawaban atastujuan penelitian. Dimana diperoleh hasil secara parsial dan simultan terdapat pengaruh positif dari variabel promosi dan literasi terhadap variabel keputusan pembelian. Diperoleh hasil dari uji R2, variabel bebas berpengaruh secara simultan sebesar 0,763 atau 76,3% terhadap variabel terikat. Sedangkan terdapat sisa sebesar 0,237 atau 23,7% dipengaruhi faktor lain di luar variabel penelitian.
PENGARUH HUMAN RELATION, LINGKUNGAN KERJA, PELATIHAN DAN PENGEMBANGAN SDI TERHADAP ETOS KERJA PEGAWAI BANK SYARIAH
Authors: Suryani Frischa Dwi , Aji Tony Seno 
Published: March 2022

A company is able to achieve its goals if all employees can provide maximum results based on the work ethic within the employee, then the employees will work more effectively and more satisfactorily.The study inteds to measure and recognize the influence of Human Relation, the physical condition of the work environment, job training, employee development on work ethic at the bank Syariah Bukopin branch office in Surabaya. The population and sample all employee totaling 50 people. The results of the analysis showed that Human Relation had no influence on work ethic in Bukopin Syariah Bank branch office Surabaya, while physical condition of the work environment, on the job training, employee development has a positive influence on employee the work ethic in Bukopin Syariah Bank branch office Surabaya. While the results of R2 of 67.4% means the variable has a big contribute to work ethic.
Persepsi Nasabah Tentang Implementasi Shariah Compliance dan Good Corporate Governance Terhadap Loyalitas Nasabah BRI Syariah Kantor Cabang Sidoarjo
Authors: Ibrahim Mohammad Iqbal , Rachmawati Lucky 
Published: March 2022

Abstract The purpose of this research aims to determine whether the shariah compliance (X1) and good corporate governance (X2) affect the loyalty of customers of (Y) bank BRI Syariah Kantor Cabang Sidoarjo. The sample used in this research were 80 respondent from the customers of bank BRI Syariah Kantor Cabang Sidoarjo. The data collection method used in this study was by distributing questionnaires or numbers via online Google Form to the customers of bank BRI Syariah Kantor Cabang Sidoarjo who has any product at there. This research used the Instrumen Test, Multiple Regression Analysis Test, and Hypothesis Test. The results of this study indicate that shariah compliance has a positive effect on loyalty of the customers. In addition, good corporate governance also influences positively and significantly on the loyalty of the customers. Shariah Compliance and Good Corporate Governance also influence 0,356 or 35,6% to loyality of the customers Bank BRI Syariah KC Sidoarjo and also 64,4% were influenced by another factor.
PENERAPAN ETIKA BISNIS SYARIAH DAN DAMPAKNYA TERHADAP LOYALITAS PELANGGAN PADA YAYASAN AQIQOH NURUL HAYAT SURABAYA
Authors: Maharti Resti Kartika , Fahrullah Arasy 
Published: March 2022

Abstract The purpose of this study was to determine how the application of Islamic Business Ethics and its impact on customer loyalty at the Aqiqah Nurul HayatSurabaya. This study uses a qualitative method. The purpose of using qualitative methods is to understand the phenomenon of what is experienced by research subjects, in the subject under study there are several types of data, namely internal and external, in internal subjects, namely employees in the Operational Division who are in charge of carrying out Operational Marketing activities at the Aqiqah Nurul HayatSurabaya, while the external data subject is the customers of the Aqiqah Nurul HayatFoundation Surabaya. Another external research subject is a customer who has subscribed to or purchased Aqiqah services at the Aqiqah Nurul HayatSurabaya to provide information on how to implement Islamic Business Ethics at the Aqiqah Nurul HayatSurabaya. Collecting data in this study using interview techniques to find out and get the desired data followed by documentation techniques and direct observation. The results of this study indicate that the application of Islamic Business Ethics has a significant impact on increasing customer loyalty of the Aqiqah Nurul Hayatsuch as customer satisfaction through honest employee performance and paying attention to the halalness of the products being sold.
Penerapan Etika Bisnis Islam dalam Komunikasi Pemasaran Travel Umrah (Studi pada PT Ebad Alrahman Wisata Sidoarjo)
Authors: Alfianto Titis , Fikriyah Khusnul 
Published: March 2022

Every year, the interest of Indonesian to perform Umrah is quite high. However, this conidition is utilized bysome irresponsible Umrah agents to commit bad actions such as giving false promises during promotions. This study aimed to determine theimplementation of Islamic business ethics in marketing communications for Umrah travel at PT Ebad Alrahman Wisata Sidoarjo. This research is a descriptive qualitativethroughphenomenon understanding. Data was collected throughinterviews, observation and documentation. While the data analysis used the triangulation method of sources. The result indicated that PT Ebad Alrahman Wisata Sidoarjo has implemented eight mixes of marketing communications through various information media channels, as well as implemented the basic principles of Islamic business ethics, i.e. unity, justice, free will, responsibility and ihsan.
Upaya Dinas Perindustrian dan Perdagangan Dalam Pemberdayaan Sumber Daya Insani di Industri Kecil Menengah Batik Jombang
Authors: Fachruddin Andy 
Published: March 2022

Abstract This research is focused on discussing the efforts of the Department of Industry and Trade in Empowering Human Resources in the Batik Small and Medium Industry in Jombang. In Islam helping each other is a very noble work which is recommended in terms of goodness. This is also applied in the efforts of the Jombang local government to empower human resources. Researchers use the basic values of Islamic business ethics as a reference for measuring the application of justice, balance, accountability, morals, honesty, fulfillment of trust, intelligence, transparency, independence and freedom (responsibility, fairness), management, leadership, supervision. Through a qualitative approach, there are problems that must be answered, namely how the efforts of the Department of Trade and Industry in implementing human resource management empowerment for the small and medium batik industry in Jombang when examined in Islamic economics So that researchers can collect three components, namely data reduction, data presentation, and data verification. The results of the study indicate that the Jombang District Industry and Trade Office has not implemented the empowerment of Islamic small and medium-sized batik industry human resources because it still raises and passes animal batik motifs such as animal heads and management that is less Islamic, with this approach to the principles of transparency. , Accountability, Responsibility, Independency, Fairness.