bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analisis Sistem Penghapusan Aset / Barang Milik Daerah pada Badan Pengelolaanokeuangan dan Aset Daerah (BPKAD) Provinsi Sumatera Utara
Authors: Bestari Kinanti Putri , Tarigan Azhari Akmal 
Published: May 2022

Assets are all goods purchased oor obtained at the expense of the State Revenue and ExpenditureoBudget or derived from other legitimateoacquisitions. The abolition of state property isothe finaloactivity of the management of state propertyoand is not a simple act for governmentoagencies. Publication of decisions onothe Elimination oof stateoproperty ooccurs throughoprocedures that are oftenoconsideredocomplicated and a wasteoof time. This study aims toodetermine whetherothe system andoprocedures for the elimination of StateoProperty at the State Property Office at theoRegional Financial and AssetoManagement Agency (BPKAD)oOffice of North Sumatra Province are in accordance with Minister of Finance Regulation 83/PMK.06/2016 concerning Procedures for Implementation Destruction and Eliminationoof State Property. The research method used in this study is a qualitative descriptiveomethod, with the aim of whichoeachodata is collected, analyzed, then a conclusion isodrawn and the type of research used is descriptive qualitative. The results of this study conclude thatothe systemoand procedures forothe elimination of state property at the State Property Office at theoRegional Office of the Ministry ofoReligion of NorthoSulawesi Province are in accordance with the Regulation of theoMinister of Finance Number 83/PMK.06/2016 concerning Procedures for theoExtermination and Elimination of State Property.
Keywords: Analysis, Systems and Procedures, Elimination of State Property
Strategi Pengembangan Usaha Mikro, Kecil dan Menengah (UMKM) yang Dilakukan Dinas Koperasi dan UMK Kabupaten Labuhanbatu Dalam Meningkatkan Perekonomian Masyarakat Sekitar
Authors: Syafitri Amalia Melisa , Arif Muhammad 
Published: May 2022

The purpose of this research is to develop cooperation strategies for Labuhanato Regency and the Small and Medium Enterprises Office in small business development efforts in Labuhanbato Regency during the Covid-19 pandemic. This search uses quantitaif with a descriptive approach. This type of research is field research. The results of this study in the analysis use inference methods that start with general data and end with conclusions. Based on the results of the study, it can be concluded that the strategy of small business development in Labuhanbato Regency during the Covid-19 outbreak is through a program for Micro business problem services from commercial production processes, development of promoting small business products, network improvement between institutions, micro strandarization commercial product production services.
Keywords: strategy, MSME Development, Covid-19 Pandemic
Analisis Penanganan Klaim Asuransi Proteksi Pembiayaan Syariah Pada PT. Asuransi Askrida Syariah Cabang Medan
Authors: Andre Alkahfi Muhammad , Yusrizal Yusrizal 
Published: May 2022

A claim on insurance is a request made by a customer to an insurance company for payment for risks incurred under a previous contract. Claims submitted will be reviewed by the company and then paid to the policyholder upon approval. The insurance company is responsible for paying insurance claims for a risk that arises in a loan agreement based on a pre-agreed agreement and provided that the specified terms and conditions are met. The purpose of writing this article is to find out the procedure for handling sharia financing protection insurance claims at PT Asurasi Askrida Syariah Medan Branch. The research method used by the author in writing this article is to use the interview method, the observation method, and also the library research method. Primary data and secondary data are the data used. The data analysis method used is a technical data analysis method. Based on the otained analysis results it can e concluded that PT Asuransi Askrida Syariah Medan Branch has implemented process for handling sharia financing protection insurance claims by providing a good settlement in accordance with applicable standards..

Keywords: Insurance, Claims, Protection, Financing.
The Effect of Yoga module on Hypertensive Pregnant Woman - A Pilot study
Authors: Mishra Anuradha , Urmila Shirke , Shirke Jijaba 
Published: May 2022

Background: Yoga is an ancient science of life which provide holistic approach to the health. Its analytical approach is depending on the signs and symptoms present in the patients. As Pregnancy induced hypertension is the instrumental disease, there is no direct reference of it in Ayurveda and yoga. But there are many references in ancient texts about hemodynamic system including Hridaya, Dhamani, Shira etc which are commonly affected by the high blood pressure. Aim and objective: To assess the role of specific Yoga module in the management of gestational hypertension. Materials and Methods: For the present study total 15 patients were selected and Yoga module was advised to the diagnosed hypertensive pregnant woman for 5 days a week for 8 weeks and assessment was done after completion of Yoga module. Results: In pregnant women, after applying t test, statistically highly significant result P>0.001 were found in Systolic, Diastolic blood pressure and pulse rate after Yoga Module therapy. Conclusion: Yoga helps to improve physical, mental, and spiritual health. Yoga improves the cardiovascular system, immune system, and quality and length of sleep. Yoga regulates five types of Vata which helps to maintains circulation and metabolism in body, by reliving stress yogic procedure reduce the systolic and diastolic BP.
PENENTUAN STANDAR KADAR DIGLISERIDA DALAM PEMBUATAN BIODIESEL DENGAN METODE QUALITY LOSS FUNCTION DI PT X
Authors: Zurairah Masdania , Saragih Edy Syahputra , Rezeki Rahmad , Misdawati Misdawati 
Published: May 2022

Perusahaan PT X menghasilkan biodiesel yang berasal dari bahan baku minyak kelapa sawit. Proses untuk mendapatkan biodiesel melalui tahapan proses pemurnian, transesterifikasi dan kemudian menghasilkan produk metil ester atau biodiesel. Hasil biodiesel yang diperoleh merupakan reaksi antara (minyak nabati) dengan senyawa kimia methanol dengan bantan katalis. Perusahaan PT X dalam hal ini menetapkan standar bahan baku salah satu adalah kadar digliserida maksimum 0,2%. Data kadar digliserida perusahaan PT X menunjukkan kadarnya diatas 0,2 %, dengan jumlah produk yang outspec sangat banyak sehingga hal ini menunjukkan adanya sistem produksi yang bermasalah. Kerugian kualitas atau Quality Loss Function, ini disebabkan kerusakan dalam tahap proses pembuatannya, yang akan mengalami kerugian berupa material, waktu, dan energi. Hasil perhitungan quality loss function untuk produk yang mengalami kerusakan sebanyak 22816 ton.
PENGGUNAAN PUPUK ANORGANIK DAN CAMPURAN BIOCHAR DENGAN PUPUK KANDANG TERHADAP PERTUMBUHAN KACANG KEDELAI (Glycine max L. Merril)
Authors: Mayly B. D Syarifa , Mufriah Dini , Sulistiani Rini , Dibisono Muhammad Yusuf 
Published: May 2022

Penelitian ini bertujuan untuk mendapatkan aplikasi pupuk an organik dan campuran biochar dengan pupuk kandang yang tepat untuk pertumbuhan kacang kedelai. Penelitian dilakukan dengan menggunakan Rancangan Split Plot Design dimana petak utama pemberian pupuk anorganik (F) terdiri dari 2 taraf, yaitu : F0 (tanpa diberi pupuk anorganik); F1 (diberi pupuk anorganik), anak petak yaitu campuran biochar dengan pupuk kandang (K) yang terdiri dari 6 taraf yaitu: K1 (Biochar sekam padi + pupuk kandang ayam); K2 (Biochar sekam padi + pupuk kandang sapi); K3 (Biochar serbuk gergaji + pupuk kandang ayam); K4 (Biochar serbuk gergaji + pupuk kandang sapi); K5 (Biochar tangkos kelapa sawit + pupuk kandang ayam); K6 (Biochar tangkos kelapa sawit + pupuk kandang sapi). Aplikasi pupuk anorganik dan campuran biochar dengan pupuk kandang memberikan perbedaan nyata pada tinggi tanaman, jumlah klorofil, dan total luas daun, sedangkan interaksi keduanya hanya berpengaruh nyata pada tinggi tanaman dan total luas daun. Perlakuan terbaik diperoleh pada perlakuan aplikasi pupuk anorganik, kombinasi pemberian pupuk anorganik dengan biochar tankos sawit + pupuk kandang ayam. Sedangkan aplikasi biochar sekam padi + pupuk kandang sapi, biochar tankos sawit + pupuk kandang ayam, biochar serbuk gergaji + pupuk kandang ayam menunjukkan nilai terbaik.
PENGGUNAAN PUPUK ORGANIK RUMPUT LAUT (Sargasum sp ) DAN NPK MUTIARA TERHADAP PERTUMBUHAN DAN HASIL PRODUKSI TANAMAN MENTIMUN (Cucumis sativus L)
Authors: Dibisono Mhd Yusuf , Mufriah Dini , Mayly Syarifah , Sulistiani Rini 
Published: May 2022

Tanaman mentimun (Cucumis sativus L) merupakan salah satu sayuran buah yang banyak di konsumsi segar oleh masyarakat Indonesia. Tujuan dari penelitian ini adalah untuk mendapatkan dosis pupuk organik rumput laut dan pupuk NPK Mutiara yang tepat untuk pertumbuhan tanaman mentimun. Penelitian menggunakan Rancangan Acak Kelompok (RAK) dengan dua faktorial yang diteliti yaitu: pupuk organik rumput laut (R) terdiri dari 3 taraf perlakuan R1 = 10 ton/ha (1,5 kg/plot), R2 = 20 ton/ha (3 kg/plot), R3 = 30 ton/ha (4,5 kg/plot), dan faktor dosis pupuk NPK terdiri dari 3 taraf perlakuan P0= 0 kg/ha (0 g/plot), P1 = 200 kg/ha (30 g/plot), P2 = 300 kg/ha (45 g/plot). Parameter yang diamati dalam penelitian ini adalah jumlah daun (helai), tinggi tanaman (cm), jumlah cabang, jumlah buah persampel (buah), jumlah buah perplot, berat buah persampel (gram), dan berat buah perplot. Hasil penelitian ini menunjukkan bahwa pemberian pupuk rumput laut berpengaruh nyata terhadap semua parameter. Pemberian pupuk rumput laut terbaik pada perlakuan R3 = 30 ton/ha (4,5 kg/plot). Pupuk NPK Mutiara memberikan pengaruh nyata terhadap jumlah daun, tinggi tanaman, berat buah persampel, berat buah perplot, dan jumlah buah perplot. Pemberian pupuk NPK Mutiara terbaik pada perlakuan P2 = 300 kg/ha (45 g/plot). Interaksi pupuk rumput laut dan NPK Mutiara berpengaruh nyata terhadap jumlah buah persampel, berat buah persampel.
ANALISIS PENGENDALIAN PERSEDIAAN BAHAN BAKU UDANG DI PT. BAHARI MAKMUR SEJATI MEDAN
Authors: Zaharuddin Zaharuddin , Alfyan Alfyan , Kusuma Budhi Santri , Syarif Abdul Azis 
Published: May 2022

Ada beberapa perusahaan yang bergerak di pengolahan pembekuan udang di Kota Medan salah satunya yaitu PT. Bahari Makmur Sejati. Pengendalian persediaan bahan baku merupakan salah satu hal yang penting dimana persediaan yang baik akan menjaga kelangsungan proses produksi. Persediaan disini meliputi tentang jumlah yg dipesan, kapan dipesan dan pemasok bahan baku. Selama ini perusahaan PT. Bahari Makmur Sejati melakukan pemesanan bahan baku berdasarkan pengalaman-pengalaman yang terjadi pada tahun-tahun sebelumnya sehingga tidak didapat efektif dan efisiensi berapa sebenarnya yang dibutuhkan sehingga bisa meminimasi persediaan. Untuk mendapatkan jumlah pemesanan dan jadwal pemesanan yang tepat dan baik maka penulis mencoba melakukan perhitungan persediaan dengan menggunakan Metode Economic Order Quantity (EOQ). Sehingga nanti akan didapat hasil perbandingan dan selisih biaya yang dikeluarkan selama ini oleh perusahaan dengan biaya dengan menggunakan metode EOQ. Selisih biaya ini sedikit banyaknya akan membuat perusahaan PT. Bahari Makmur Sejati melakukan penghematan di bagian produksi khususnya di persediaan bahan baku udang.
PENGARUH MODEL PEMBELAJARAN TWO STAY-TWO STRAY TERHADAP KREATIVITAS BELAJAR SISWA PADA POKOK BAHASAN EKSPONEN KELAS X IPA
Authors: Harahap Ardiansyah , Siswadi Siswadi 
Published: May 2022

Penelitian dilatarbelakangi keingintahuan peneliti apakah pengaruh model pembelajaran Two Stay Two Stray (TS-TS) terhadap kreativitas belajar siswa. oleh karena itu peneliti mengadakan penelitian yang berjudul “Pengaruh Model Pembelajaran Two Stay Two Stray (TS-TS) Terhadap Kreativitas Belajar Siswa pada Pokok Bahasan Eksponen Kelas X IPA MAS Darul Ikhlas H. Abd Manap Siregar”.Pembahasan penelitian ini berkaitan dengan pengaruh model pembelajaran Two Stay Two Stray (TS-TS) terhadap kreativitas belajar siswa pada pokok bahasan eksponen, sehubungan dengan itu pendekatan yang dilakukan adalah teori-teori yang berkaitan dengan belajar dan pembelajaran, model pembelajaran Two Stay Two Stray, kreativitas, dan materi eksponen. Metode penelitian yang dilakukan adalah metode eksperien dengan menggunakan model pretest posttest control grup dsign. Popoulasi dalam penelitian ini adalah seluruh kelas X MAS Darul Ikhlas yang berjumlah 34 siswa. Kelas akan dibagi dua kelompok yaitu, kelompok A berjumlah 16 orang sebagai kelas eksperimen dan kelompok B berjumlah 18 orang sebagai kelas kontrol. Instrumen dalam penelitian adalah angket kreatvitas siswa. Adapun teknik analisis datanya yaitu menggunakan rumus chi-kuadrat, uji kesamaan dua rata-rata dan uji-t. Hasil penelitian ini adalah berdasarkan perhitungan uji-t diperoleh thitung=23,28 dan ttabel= 2,021. karena thitung=23,28 ttabel= 2,021, maka Ha diterima yaitu bahwa rata-rata kreativitas belajar siswa pada pokok bahasan eksponen dengan menggunakan model pembelajaran Two Stay Two Stray (TS-TS) lebih baik daripada rata-rata kreativitas belajar siswa tanpa menggunakan model pembelajaran Two Stay Two Stray. Sehingga dapat disimpulkan terdapat pengaruh yang signifikan antara model pembelajaran Two Stay Two Stray terhadap kreativitas belajar siswa pada pokok bahasan eksponen kelas X MAS Darul Ikhlas.
Numerical investigation on a block preconditioning strategy to improve the computational efficiency of DFN models
Authors: Gazzola Laura , Ferronato Massimiliano , Berrone Stefano , Pieraccini Sandra , Scialò Stefano 
Published: May 2022

Simulation of fluid flow dynamics in fractured porous media is an important issue in several subsurface models. The intricate network generated by hundreds of fractures produces complex multi-scale geometries that can be modelled in different ways. In contrast to homogenization-based techniques, discrete fracture network (DFN) models explicitly represent the fracture planes and their properties, prescribing continuity constraints for the fluid flow along the linear intersections. We focus on the formulation of the DFN model as a PDE-constrained optimization problem as originally proposed in [1]. This approach uses a non-conforming mesh and decouples the global problem in local ones, thus being suitable for an effective parallel implementation [2]. Imposing the flow continuity by a Lagrange-multiplier technique gives rise to a linearized algebraic problem where the global matrix K has a symmetric saddle-point structure with a rank-deficient leading block. In this work, we focus on accelerating the iterative solution of the system with matrix K by introducing effective block preconditioning techniques. First, an appropriate permutation of K is performed, in order to avoid a singular leading block though losing the global symmetry. Then, we restrict K to the coarse space of the fracture traces and solve inexactly the projected matrix by either an explicit or a matrix-free approach. The granular properties and the structure of K blocks are properly exploited in order to guarantee an efficient parallel implementation. The proposed algorithm is tested in applications of increasing size to verify its robustness and effectiveness in the acceleration of the iterative linear solver.[1] S. Berrone, S. Pieraccini, S. Scialò. A PDE-constrained optimization formulation for Discrete Fracture Network flows, SIAM J. Sci. Comput., Vol. 35, pp. B487-B510, (2013) [2] S. Berrone, S. Scialò, F. Vicini. Parallel meshing, discretization and computation of flow in massive Discrete Fracture Networks, SIAM J. Sci. Comput., Vol. 41, pp. C317-C338, (2019)
Sea ice strength development from freezing to melting in the Antarctic marginal ice zone
Authors: Paul Felix , Mielke T. , Audh R. , Lupascu D.C. 
Published: May 2022

Sea ice growth in the Marginal Ice Zone of the Antarctic is one of the largest annual changes on earth with a huge impact on the global climate and ecology system. The principles of sea ice growth and melting in the MIZ of the Antarctic is yet not as well researched as its polar counterpart in the north.For this study, pancake ice, consolidated ice and floe ice were analyzed with a compression test in July, October and November 2019 in the marginal ice zone of the Antarctic. Newly formed pancake ice in July showed the highest compressive strength in the bottom layer (3 MPa), whereas consolidated ice was strongest at the top (5 MPa). Consolidated ice in October and November had the highest compressive strength in a middle layer with up to 13.5 MPa, the maximum strength at the top was 3 MPa. Floe ice, consisting of destroyed pack ice, did not show a clear strength development over sea ice depth.
Multilevel matrix-free preconditioner to solve linear systems associated with a the time-dependent SPN equations
Authors: Carreño Amanda , Vidal-Ferràndiz Antoni , Ginestar Damián , Verdú Gumersindo 
Published: May 2022

Inside a nuclear reactor core, the neutronic power distribution can be approximated by means of the multigroup time-dependent simplified spherical harmonics equations. In particular, this work uses a formulation where the time derivatives of the even spherical harmonics moments are assumed equal to zero. This treatment yields to diffusive equations of order two that only depend on the position and time.For the spatial discretization of the equations, a continuous Galerkin high order finite element method is applied. In the time discretization, two sets of equations appear: one related to the neutron moments and the other related to the delayed neutron precursor concentrations. Moreover, these time differential equations are usually stiff. Thus, a semi-implicit time scheme must be proposed that needs to solve several linear systems in each time-step. And generally, these systems must be preconditioned.The main aim of this work is to speed up the convergence of the linear systems solver with a multilevel preconditioner that uses different levels of energy, spherical moments and degrees in the finite element method. Furthermore, the matrices that appear in this type of system are large and sparse. A matrix-free implementation is used to avoid the full assembly of the matrices. Therefore, the multilevel preconditioner must be applied by matrix-vector products.Different benchmark transients test these techniques. Numerical results show, in the comparison with classical methodologies, an improvement in terms of memory requested and time needed to obtain the solution.
A mixed isogeometric plane stress and plane strain formulation with different continuities for the alleviation of locking
Authors: Stammen Lisa , Dornisch Wolfgang 
Published: May 2022

Isogeometric analysis was founded by Hughes et al. and tries to unify computer aided design (CAD) and finite element analysis (FEA) by using the same model for geometry representation and analysis. Therefore, non-uniform rational B-splines (NURBS) and other kinds of splines are used as shape functions of the finite elements. Due to the exact representation of the geometry, analysis results can be improved. Furthermore, many fast and numerically stable algorithms have been developed that exhibit favourable mathematical properties.In mixed formulations stresses and/or strains or pressures are approximated independently and in addition to the usual displacement approximation. Using such methods is more robust and offers more accurate results. Hence, mixed formulations are employed to solve incompressible elasticity problems for instance.Recent investigations have already combined isogeometric analysis and mixed formulations in order to benefit from the advantages of both methods.In this contribution, a mixed isogeometric method is proposed in order to improve the analysis results and to counteract locking. Therefore, spline basis functions are used and the displacement shape functions of a two-dimensional isogeometric plane stress and plane strain element are supplemented by independent stress shape functions. These additional stress shape functions are chosen to be of one order lower compared to the displacement shape functions, but with adapted continuity.Evaluating the error norms for several examples, it is shown that the proposed mixed method leads to an improved accuracy of results compared to a standard isogeometric formulation and is able to counteract locking. Furthermore, the influence of the continuity of the stress shape functions is shown.
Augmented fluid-structure interaction systems for viscoelastic pipelines and blood vessels
Authors: Bertaglia Giulia 
Published: May 2022

Mathematical models and numerical methods are a powerful resource for better understanding phenomena and processes throughout the fluid dynamics field, allowing significant reductions in the costs, which would otherwise be required to perform laboratory experiments, and even allowing to obtain useful data that could not be gathered through measurements.The correct characterization of the interactions that occur between the fluid and the wall that surrounds it is a fundamental aspect in all contexts involving deformable ducts, which requires the utmost attention at every stage of both the development of the computational method and the interpretation of the results and their application to cases of practical interest.In this work, innovative mathematical models able to predict the behavior of the fluid-structure interaction (FSI) mechanism that underlies the dynamics of flows in different compliant ducts is presented. Starting from the purely civil engineering sector, with the study of plastic water pipelines, the final application of the proposed tool is linked to the medical research field, to reproduce the mechanics of blood flow in both arteries and veins. With this aim, various linear viscoelastic models, from the simplest to the more sophisticated, have been applied and extended to obtain augmented FSI systems in which the constitutive equation of the material is directly embedded into the system as partial differential equation [1]. These systems are solved recurring to second-order Finite Volume Methods that take into account the recent evolution in the computational literature of hyperbolic balance laws systems [2]. To avoid the loss of accuracy in the stiff regimes of the proposed systems, asymptotic-preserving IMEX Runge-Kutta schemes are considered for the time discretization, which are able to maintain the consistency and the accuracy in the diffusive limit, without restrictions due to the scaling parameters [3]. The models have been extensively validated through different types of test cases, highlighting the advantages of using the augmented formulation of the system of equations. Furthermore, comparisons with experimental data have been considered both for the water pipelines scenario and the blood flow modeling, recurring to in-vivo measurements for the latter.REFERENCES[1] Bertaglia, G., Caleffi, V. and Valiani, A. Modeling blood flow in viscoelastic vessels: the 1D augmented fluid-structure interaction system. Comput. Methods Appl. Mech. Eng., 360(C):112772 (2020).[2] Bertaglia, G., Ioriatti, M., Valiani, A., Dumbser, M. and Caleffi, V. Numerical methods for hydraulic transients in visco-elastic pipes. J. Fluids Struct., 81:230-254 (2018).[3] Pareschi, L. and Russo, G. Implicit-explicit Runge-Kutta schemes and applications to hyperbolic systems with relaxation. J. Sci. Comput., 25:129-155 (2005).