bluuebunny/crossref_metadata_2025 huggingface dataset:
Impact of Structures on the Operation of Air Traffic Radiolocation and Radionavigation Surveillance Systems
Authors: Grzybkowski Maciej J. , Niewiadomski Daniel , Mora Marcin ,   National Institute of Telecommunications, Poland
Published: December 2021

The article describes interference affecting the operation of radiolocation and radionavigation devices used in the air traffic surveillance systems, caused by the proximity of building structures. The impact of a hypothetical structure on the operation of primary and secondary air traffic surveillance radars and DVOR/DME beacons was simulated. The results of this simulation are presented in the form of airspace sectors in which false identification of aircraft may occur, and where it will not be possible to identify aircraft or use beacons due to the certain portion of airspace being in the shadow created by the structure. Analysis of the possibility of the PSR radar receiver being blocked by a strong signal reflected from a nearby building was performed as well.
Accurate Location of Fiber Cable Fault with OTDR
Authors: Borzycki Krzysztof , Gajewski Paweł ,   National Institute of Telecommunications, Poland
Published: December 2021

The paper reviews the factors limiting the accuracy of locating a fiber optic cable fault when using an optical time domain reflectometer (OTDR) and describes an error estimation method for typical use cases. The primary source of errors lies in the complex relationship between the length of the optical fiber (measured by OTDR), its routing, cable design depending on cable design and type of installation (i.e. duct, directly buried, aerial) as well as the spare lengths used for service purposes. The techniques which considerably improve the accuracy of the fault localization processes are presented, the importance of accurate documentation of the network and of referencing the fault location to the nearest splice instead of end of the line are discussed, as is the absence of cable helix factor in data sheets.
Comparative Analysis of the Effects of False Low-Price Marketing Strategy on Multiple Platforms
Authors: He Wanting , Zhu Xixi , Zhao Lianghui
Published: December 2021

In order to make full use of the characteristics of commodity prices, merchants on e-commerce platforms have adopted the low-price marketing strategy. Regular promotional discounts can bring new vitality to the commodity sales market, but extreme discount marketing methods would lead to serious impacts on the sales of competing products, thus affecting the stable development of the online shopping market. The sales data of four electrical products using the false low-price marketing strategy on three e-commerce platforms (Taobao, JD, and Amazon) were used in this study. The sales data from different e-commerce platforms and different time periods were analyzed, and one-way ANOVA was used on the factors affecting the effect of marketing strategy. The results showed that there is a significant difference between the direct marketing of high-priced products and low-priced products on Taobao; the difference between the marketing effects of high-priced products and mid-priced products on JD and Amazon is significant. This analysis would help businesses formulate reasonable marketing strategies and promote the stable development of the online shopping market.
Investigation and Analysis of the Current Situation of Olive-Stone Carving Inheritance in Guangzhou
Authors: Hou Zhaofeng
Published: December 2021

The issue of inheriting and developing traditional handicrafts in this contemporary society is being explored by all walks of life in China. Taking the olive-stone carving in Guangzhou as a case, field investigations and analyses of its current situation of inheritance have been conducted. It has been found that although the government in Guangzhou has been paying more attention to olive-stone carving, there are still many problems, including the shortage of raw materials, no inheritors, low market recognition, and inadequate promotion. Therefore, the local government has cooperated with schools and craftsmen to search for key solutions in regard to raw material protection, training of inheritors, product development, and product promotion.
Dilemma: Quality or quantity in scientific periodical publishing
Authors: Melnyk Yu. B. , Pypenko I. S.
Published: December 2021

The eternal dilemma of quality or quantity affects many areas of human life. One of these areas is the publishing industry. This issue is particularly acute for scientific periodicals. The aim of the study. To analyze the dilemma of the quality or quantity of papers in the publication of a scientific periodical Journal, and to share the four-year experience of publishing the International Journal of Science Annals (IJSA) with publishers, editors, reviewers, and authors. Scientific periodicals should solve the dilemma of quality and quantity of papers definitely in favor of quality. Journals should be committed to a high standard of editorial ethics. Journals should have a clear and precise procedure for reviewing and selecting papers for publication. Journals should necessarily consider the possible conflict of interest in research between authors, editors, reviewers, funders, etc. Journals should motivate young talented scientists to publish their manuscripts by providing them with editorial support in the preparation of the manuscript and funding for its publication. The implementation of these key principles will contribute both to the development of science in general and the Journal in particular.
Interdisciplinary integrated tools to problem solving: How to apply to writing a thesis and planning a research
Authors: Espona M. J.
Published: December 2021

Writing a thesis or a research proposal poses enormous challenges specially in these times of information superabundance. And the positive side is that we have a lot of information to use during our research. The other phenomenon to take into consideration is the misinformation and how it could affect our research. Again, we can overcome this difficulty by applying structured research methods. The methodology proposed here starts with understanding the research problem applying the systemic thinking; then looing for information with mapping studies; evaluating the publications obtained with information quality tools; testing multiple hypothesis at the same time; and finally, if needed preparing a Gantt chart to plan the research. All these methodologies when together highlight the positive side of the synergies while minimize the impact of the cognitive bias. The aim of the study: To describe the importance of having a structured tool to write a thesis or setting up a research project. Materials and Methods: This tool was developed after analysing several research methodologies and studying their usefulness for problem-solving. Currently, new tools are under evaluation to enrich the course. Results: The proposal presented here is a problem-solving course that includes five methodologies: systems theory, mapping studies, information quality, and competing hypothesis, plus the Gantt chart. When they are used in sequence, it is possible to obtain outstanding results and also the process is auditable in its whole extension. This course has been presented several times at universities and other places in Argentina and also in Peru, with interesting and relevant results.
Pengaruh Pembatasan Sosial sebagai Upaya Menekan Penularan Covid-19 terhadap Kondisi Kesehatan Mental Remaja: Literature Review
Authors: Khasanah Dita Riski , Indarko Hennanda Annastya Annisa , Rosilawati Ida , Rejeki Dwi Sarwani Sri
Published: December 2021

Background: At the end of April 2021, the occurrence of Covid-19 in Indonesia has reached 1.63 million cases and 44,172 deaths. The social restriction policy is an effort for the government to suppress the rate of transmission of Covid-19, although on the other hand, this policy also raises fear, anxiety, and worry for the community, including teenagers. The emotional development and behaviour of adolescents towards adulthood require social space, but are constrained by social restrictions. Objective: to determine the effect of social restrictions on adolescent mental health. Methods: This study uses a literature review method from 2019 to 2021 obtained from the Google Scholar, PubMed, and Science Direct databases using the keywords social restrictions, youth, mental health disorders, Youth and Children, Covid-19, Impact, and mental health. . The criteria for the selected articles were articles published in 2019-2021 nationally and internationally related to literature review research. Results: the impact of social restrictions on the mental health of adolescents is quite varied. The existence of limitations in socializing, boredom and the many tasks assigned to adolescents are the main factors for adolescents experiencing mental disorders such as stress, depression, and anxiety. Conclusion: social restrictions indirectly have an impact on the mental health of adolescents and even trigger mental health disorders in adolescents.
Ethnocentrism in Edward Zwick’s The Last Samurai Movie: Postcolonial Perspective
Authors: Mustofa Ali -
Published: December 2021

This research focuses on ethnocentrism in Edward Zwick’s The Last Samurai. It is intended to identify how ethnocentrism is depicted and reflected in the life of samurai in the movie The Last Samurai. The ethnocentrism theory by William G. Sumner will be used to analyze the movie. The data were obtained by watching the film, reading the movie script and cinematographic elements, identifying data based on the topic of study, and categorizing the data with respect to the theoretical framework. Based on the analysis, the findings show that there are three aspects of ethnocentrism; first, loyal to in-group norms; second, express in-group pride; third, judge and underestimate the out-group. These three features of ethnocentrism create a deep perception in their dominant culture to others.
The Effect of Use Of Blended Learning OnMotivation To Learn Mathematics With Collaborative Learning Media Whatsapp And ZoomIn Class X Mipa 3 Upt Sma Negeri 1 Parepare
Authors: Ibrahim Musdalifa
Published: December 2021

This study aims to determine whether or not there is an effect of using the blended learning strategy in Math online learning via WhatsApp and zoom. This research method uses a qualitative descriptive method. The data in this study were collected through observation, interviews, and documentation. The results obtained indicate that online learning using the WhatsApp and zoom application with the blended learning strategy during the Covid-19 pandemic can provide more enjoyable learning so as to increase student enthusiasm and activity. The conclusion obtained from this study is that the use of the blended learning strategy affects online math learning via WhatsApp and zoom can be an alternative in online biology learning via Whatsapp in conditions that do not allow face-to-face learning
Ethnomathematics Exploration: Offering Dance Performance (Makan Sirih) Ethnic Malay Deli North Sumatra
Authors: Hasibuan Aulia Rahman , Br Ginting Siti Salamah
Published: December 2021

The purpose of this research is to explore a relationship between applied mathematics and a culture called ethnomathematics. The culture that will be used as the research topic is the performance culture of the Offering Dance (Makan Sirih) from the Deli Malay ethnic group in North Sumatra. This study is a research that uses descriptive qualitative research methods using an ethnographic approach that analyzes and describes a local culture based on facts obtained in the field. From the results of this research, it is revealed that, in the performance of the Offering Dance (Makan Sirih) in the Malay ethnic Deli of North Sumatra, there are various applications of mathematical concepts such as the concept of sets, counting, functions, and flat shapes. This can lead to new breakthroughs that underlie the formation of new mathematics learning designs for educational institutions. Along with this, this research also aims to improve the public's view of mathematics, that mathematics is a science that also has connections with all forms of activities in daily life.
Pengembangan Aplikasi Android MVTE dengan Metode RAD
Authors: Amrullah Fikri , Andarwati Mardiana , Swalaganata Galandaru , Rosyadi Hudan Eka
Published: December 2021

Kegiatan diskusi mahasiswa Tuli dengan mahasiswa lain, mahasiswa Tuli membutuhkan alat bantu dalam mengikuti kegiatan diskusi, dimana selama ini, mahasiswa Tuli hanya mengandalkan kemampuan membaca bibir lawan bicaranya. Penelitian ini menghasilkan sebuah teknologi bantu atau asistif yaitu aplikasi MVTe (Mobile Voice To Text) berbasis Android dimana aplikasi ini secara sederhana merubah suara dalam bentuk tulisan. Aplikasi ini dikembangan menggunakan metode RAD (Rapid Application Development). Metode RAD mempercepat proses pengerjaan dikarenakan proses kerjanya yang ringkas. Uji coba aplikasi dilakukan kepada seorang ahli IT, 5 mahasiswa Tuli, dan 5 Dosen yang ada di lingkungan Fakultas Teknologi Informasi Universitas Merdeka Malang. Rata-rata hasil uji sebesar 81,3% dengan kategori layak untuk digunakan.
Utilization of Crude Oil as an Alternative Oil Base Mud Drilling Operation by “VICOIL” Standard Drilling Simulation Rig in MGTM Well UPN “Veteran” Yogyakarta Education Park Mineral Geotechnology Museum Field
Authors: Suhascaryo KRT Nur , Wahyurini Endah , Guntoro Yuan Cahyo
Published: December 2021

Shale is one of the rocks that often causes drilling problems because shale tends to swell or swell when in contact with mud filtrate, mainly Water-base Mud (WBM). This study aims to determine how the performance of Oil-base Mud (OBM) based on Crude Coconut Oil (CCO) in overcoming the swelling problem. The methodology used consists of drilling simulation and cutting analysis in the X-Ray Diffraction (XRD) laboratory. The series of activities in the study began with the preparation of rock layers, followed by testing the penetration rate using Water-base Mud as a comparison. After cutting analysis was carried out in the XRD laboratory of UPN “Veteran” Yogyakarta with the Rigaku tool, then replaced the type of drilling fluid Oil-base Mud with basic materials alternative to Crude Coconut Oil (CCO) and followed by a penetration test. Rate of Penetration (ROP) test results from WBM with Rheology 1 at interval A or a depth of 1.96 ft-4.92 ft is 442.8 ft/h, Rheology 2 at interval B or a depth of 4.92-10.5 ft is 118.5 ft/hr on the first day. Swelling occurred and results in pipe sticking at depth of 6.5 ft. Based on the Bulk Mineral analysis, clay mineral content is 23.84%. Based on the Clay Oriented, smectite dominates the clay by 29.09%. Based on MBT, shale belongs to class B (illite and mixed-layer montmorillonite illite), where this mineral can expand. Based on a Geonor As test, 5.18% of the cutting can develop when exposed to water. The drilling fluid was replaced with Oil-base Mud based on alternative Crude Coconut Oil (CCO), and obtained ROP Rheology 1 at Interval A of 492 ft/h and Rheology 2 at Interval B of 480 ft/h. The results of the Compressive Strength test interval A on the first, third, and fifth days were 31,699 psi, 42,265 psi, and 52,831 psi. The results of the Compressive Strength test interval B on the first, second, and third days were 31,496 psi, 41,517 psi, and 52,971 psi. Based on clay mineral analysis and magnitude of ROP value, is known that Crude Coconut Oil (CCO) based Oil-base Mud is effective because during the simulation, there are no drilling problems, and the resulting ROP value is greater than the first day Water-base Mud.
PENGARUH SUHU DAN WAKTU HIDROLISIS TERHADAP KADAR GLUKOSA DALAM PEMBUATAN SIRUP GLUKOSA DARI BIJI ALPUKAT DENGAN METODE HIDROLISIS ASAM
Authors: Tambunan Mahaziva Putri Maghfirah , Ginting Zainuddin , Nurlaila Rizka , Muhammad Muhammad , Ishak Ishak
Published: December 2021

Sirup glukosa dapat digunakan sebagai bahan baku industri makanan, minuman dan farmasi. Sirup glukosa dapat diperoleh dari bahan-bahan berpati seperti biji nangka, rebung, jagung, tapioka dan jenis umbi-umbian. Pemanfaatan limbah biji alpukat di Indonesia saat ini masih sangat minim, sehingga perlu dikembangkan lebih lanjut. Salah satunya dengan melakukan penelitian pembuatan sirup glukosa dari biji alpukat. Tujuan dari penelitian ini ialah untuk mengetahui pengaruh suhu dan waktu hidrolisi terhadap kadar glukosa dari biji alpukat dengan metode hidrolisis. Adapun proses yang digunakan dalam penelitian ini yaitu proses hidrolisis dengan katalisator HCl (asam klorida). Tahapan proses diawali dengan pembutaan tepung biji alpukat yang dilanjutkan dengan proses hidrolisis. Hidrolisis dilakukan di dalam labu leher tiga dengan penambahan asam klorida 3% sebanyak 150 ml, dipanaskan dengan variasi suhu 75, 85 dan 95oC dan dengan variasi waktu 120, 135, 150, 165 dan 180 menit. Produk yang dihasilkan kemudian dianalisa kadar glukosa, kadar air, kadar abu dan analisa keadaan yang meliputi kadar kemanisan, warna dan bau. Hasil penelitian yang didapat dari penelitian ini yaitu suhu dan waktu sangat mempengaruhi kadar glukosa. Kadar glukosa paling tinggi yang didapatkan sebesar 50% pada suhu 95oC dan waktu 180 menit. Kadar air paling baik yang diperoleh sebesar 17,4105% pada suhu 95oC dan waktu 180 menit. Kadar abu paling baik yang didapatkan yaitu sebesar 0,864% pada suhu 95oC dan waktu 180 menit.
PEMBUATAN AIR MINUM ALKALI MENGGUNAKAN METODE ELEKTROLISIS
Authors: Rizki Lamkaruna , Hakim Lukman , Zulnazri Zulnazri , Muhammad Muhammad , Jalaluddin Jalaluddin
Published: December 2021

Air alkali adalah air yang bersifat basa atau mempunyai pH di atas 7. Tujuan penelitian ini adalah Mengidentifikasi variable-variabel yang mempengaruhi proses pembuatan air minum alkali, merancang alat proses pembuatan air minum alkali dan mengetahui perbandingan kualitas air minum alkali dan air biasa. Air yang telah diuji kadar TDS dan pH dimasukkan kedalam wadah elektrolisis, kemudian dielektrolisis dengan variasi tegangan 5 volt, 10 volt, 15 volt, 20 volt, dan 25 volt menggunakan variasi waktu 1 jam, 2 jam, 3 jam, 4 jam, dan 5 jam. Kemudian air hasil elektrolisis dilakukan uji organoleptic (bau, warna, dan rasa) dan uji kekeruhan. Dari hasil penelitian diperoleh kenaikan pH tertinggi yaitu pada tegangan 25 volt selama 5 jam dengan pH sebesar 8,3. Kemudian berdasarkan uji organoleptic yang dilakukan pada 8 orang orang responden diperoleh hasil bahwa air alkali hasil elektrolisis memenuhi syarat kelayakan air minum yaitu tidak memiliki bau, warna, dan rasa. Dari penelitian ini dapat diketahui bahwa kenaikan pH pada proses elektrolisis dipengaruhi oleh besar tegangan dan lama waktu elektrolisis, kenaikan pH tertinggi terdapat pada sampel hasil elektrolisis dengan tegangan 25 volt selama 5 jam yaitu pH sebesar 8,3. Kata kunci : air alkali, elektrolisis, uji organoleptik, kenaikan pH, tegangan, dan waktu
SINTESIS ESTER SELULOSA STEARAT SEBAGAI WET STRENGTH AGENT UNTUK PAPERBAG DARI TANDAN KOSONG SAWIT (TKS)
Authors: Agusna PA Angga Tri , Ginting Zainuddin , Azhari Azhari , Dewi Rozanna , Zulnazri Zulnazri
Published: December 2021

Tandan kosong kelapa sawit (TKS) adalah salah satu produk samping (by-product) berupa padatan dari industri pengolahan kelapa sawit. Kandungan selulosa yang cukup tinggi yaitu sebesar 40% menjadikan Tandan Kosong Sawit sebagai alternatif lain untuk dimanfaatkan Selulosa sebagai bahan baku pembuatan Ester Selulosa stearat. Ester Selulosa Stearat disintesa melalui reaksi transesterifikasi antara α-Selulosa hasil isolasi dari Tandan Kosong Sawit (TKS) dengan metil stearat. Sintesa Metil stearat dilakukan dengan mereaksikan metanol dan asam stearat dengan bantuan katalis H2SO4(p). Sintesis Ester selulosa stearat dilakukan dengan cara refluks selama 2 jam menggunakan pelarut metanol dengan variasi katalis Na2CO3 5, 10, 15, 20 mg dan dengan variasi volume metil stearat 5, 10, 15. Dan diambil variasi terbaik ditentukan berdasarkan uji derajat substitusi yaitu dengan variasi katalis Na2CO3 20 mg dan volume metil Stearat 15 ml, sebesar 1,95. Hasil sintesis yaitu selulosa stearat diuji gugus fungsi dengan spektroskopi FT-IR dan morfologi permukaan menggunakan SEM. Terbentuknya selulosa stearat didukung oleh spektrum FT-IR pada daerah bilangan gelombang 3468,01 cm-1 menunjukkan gugus O-H, 3062,96 cm-1 menunjukkan gugus C-H streching, 1695,43 cm-1 menunjukkan gugus C=O, cm-1 menunjukkan gugus C-H bending, 1095,57cm-1 menunjukkan gugus C-O-C, 609,51cm-menunjukkan gugus (CH2)n4. Hasil analisis morfologi permukaan menggunakan SEM menunjukkan bahwa permukaan selulosa stearat tampak homogen, lebih teratur dan memiliki rongga-rongga yang lebih rapat daripada α-Selulosa.
EKSTRAKSI BIJI OROK-OROK (CROTALARIA JUNCEA) SEBAGAI BAHAN BAKU PEMBUATAN BIODIESEL MENGGUNAKAN PELARUT N-HEKSAN
Authors: Harahap Mahyuni Marito , Azhari Azhari , Meriatna Meriatna , Suryati Suryati , Bahri Syamsul
Published: December 2021

AbstrakTanaman orok-orok (crotalaria juncea) adalah tanaman leguminosa yang termasuk kedalam keluarga perdu dan semak. Biji orok-orok dapat digunakan sebagai obat insomnia dan sebagai bahan baku pembuatan biodiesel karena mengandung 12,6 % minyak dengan 46,8 % asam linoleate. 4,6 % asam linolenat, 28,3 % asam oleat dan 20,3 % asam jenuh. Untuk mendapatkan minyak dari biji orok-orok yang akan digunakan sebagai bahan baku biodiesel dapat dilakukan dengan metode ekstraksi padat-cair menggunakan pelarut N-Heksan. Pada penelitian ini bahan baku yang digunakan adalah biji orok-orok dan N-Heksan. Biji orok-orok dihaluskan menggunakan blender, kemudian dimasukkan dalam labu leher tiga untuk proses ekstraksi menggunakan pelarut N-Heksan. Ekstraksi dilakukan dengan memvariasikan suhu ekstraksi dan volume pelarut dengan waktu ekstraksi 5 jam dan bahan baku sebanyak 100 gr. Setelah selesai ekstraksi larutan disaring menggunakan kertas saring. Selanjutnya dilakukan pemisahan antara minyak dan pelarut dengan proses destilasi. Pengujian yang dilakukan adalah uji densitas, yield, kadar FFA, viscositas, densitas dan uji komposisi dengan alat GC-MS. Densitas terendah dihasilkan pada suhu 500C, berat sampel 100 gr, waktu ekstraksi 5 jam dan volume pelarut sebanyak 400 ml sebesar 1 g/ml. Yield tertinggi dihasilkan pada suhu 600C, berat sampel 100 gr, volume pelarut 700 ml dan waktu ekstraksi 5 jam sebesar 35,52 %. Kadar FFA terendah dihasilkan pada suhu 500C, berat sampel 100 gr, volume pelarut 500 ml dan waktu 5 jam sebesar 1,39 %. Viscositas hasil terbaik yang didapatkan adalah pada volume 700 ml dengan waktu ekstraksi 5 jam menggunakan pelarut N-Heksan pada suhu 600c sebesar 1 cp. Dari hasil uji GC-MS diketahui bahwa minyak biji orok-orok mengandung methyl ester of undecanoic acid, 2-methylpentanoic acid, myristic acid methyl ester, methyl linolelaidate, 2-cyclopentylacetohydrazide dan 2-methylpentanoic acid.
PEMANFAATAN EKSTRAK DAUN BIDURI (Calotropis gigantae) SEBAGAI INHIBITOR KOROSI PADA BAJA LUNAK (Mild Steel) DALAM BERBAGAI MEDIUM KOROSIF
Authors: Anshori Alfathan , Ishak Ishak , Jalaluddin Jalaluddin , Bahri Syamsul , Zulnazri Zulnazri
Published: December 2021

Penelitian ini bertujuan untuk mengetahui pengaruh penambahan inhibitor daun biduri (Calotropis gigantea) pada baja karbon rendah (mild steel), untuk menganalisa pengaruh konsentrasi inhibitor dari ekstrak daun biduri terhadap berbagai medium korosif yaitu air laut, HNO3 0,1 N dan CH3COOH 0,1 N dan untuk menganalisa pengaruh berbagai medium korosif terhadap laju korosi baja karbon, untuk menganalisa pengaruh konsentrasi inhibitor dari ekstrak daun biduri terhadap laju korosi. Laju korosi dihitung dengan menggunakan metode kehilangan berat. Konsentrasi inhibitor yang digunakan yaitu 0 ppm (kondisi blanko), 200 ppm, 250 ppm, 300 ppm dan 350 ppm. Lama perendaman dijadikan sebagai variabel tetap yaitu selama 30 hari. Hasil kajian menunjukkan bahwa ekstrak daun biduri dapat digunakan sebagai bio-inhibitor korosi pada plat baja lunak (mild steel). Laju korosi terendah yaitu pada medium korosif air laut dengan penambahan konsentrasi inhibitor sebanyak 400 ppm yaitu sebesar 8,374 mpy, sedangkan laju korosi tertinggi yaitu pada medium korosif asam nitrat (HNO3) 0,1 N dengan tanpa adanya penambahan konsentrasi inhibitor yaitu sebesar 31,013 mpy. Hal ini menunjukkan bahwa penambahan tanin dari ekstrak daun biduri dapat mengurangi laju korosi.
PEMANFAATAN EKSTRAK DAUN RAMBUTAN (Nephelium lappaceum) SEBAGAI INHIBITOR KOROSI PADA PLAT BESI (STEEL) DALAM MEDIA AIR LAUT
Authors: Akbar Yopi Aji , Ishak Ishak , Zulnazri Zulnazri , Dewi Rozanna , Nurlaila Rizka
Published: December 2021

Korosi adalah proses perusakan pada permukaan logam yang disebabkan oleh terjadinya reaksi kimia (reaksi elektrokimia) pada permukaan logam. Untuk mengurangi laju korosi bisa dengan menambahkan inhibitor alami salah satunya  daun rambutan yang mengandung tanin sehingga dapat membentuk senyawa komplek dengan Fe(III) di permukaan logam, sehingga laju reaksi korosi akan mengalami penurunan. Studi penggunaan ekstrak daun rambutan sebagai inhibitor  korosi pada plat besi akan dilakukan secara eksperimen murni di laboratorium dengan menggunakan metode perendaman. Media korosif untuk perendaman digunakan air laut yang telah ditambahkan inhibitor. Inhibitor yang digunakan yaitu inhibitor organik yang diambil dari ekstrak daun rambutan. Perendaman dilakukan dalam interval waktu (3, 6, 9, 12, dan 15) hari dengan konsentrasi inhibitor (0, 50, 100, dan 150) ppm. Hasil pengujian menunjukkan bahwa serangan korosi terjadi secara merata dipermukaan logam, Besarnya laju korosi dinyatakan sebagai besarnya kehilangan berat benda uji per satuan luas permukaan per satuan waktu perendaman. Dari hasil penelitian diperoleh bahwa laju korosi plat besi dalam lingkungan air laut menurun secara segnifikan dengan meningkatnya konsentrasi ekstrak daun rambutan dan waktu perendaman. Penurunan ini akibat pembentukan lapisan tipis dipermukaan plat besi, sehingga menghambat kontak langsung antara plat besi dan lingkungan. Efesiensi inhibisi tertinggi diperoleh pada perendaman 15 hari dengan konsentrasi 150 ppm yaitu 96%
PENGARUH JUMLAH PENDUDUK MISKIN DAN TINGKAT PENGANGGURAN TERBUKA TERHADAP PERTUMBUHAN EKONOMI DI INDONESIA
Authors: Padang Lidyawati , Murtala Murtala
Published: December 2021

This study aims to determine the effect of the number of poor people and the open unemployment rate on economic growth in Indonesia. This study uses panel data from 2015 to 2019. The method of data analysis used is panel data regression analysis. The results of the study partially show that the number of poor people has a negative and significant effect on economic growth in Indonesia, and the open unemployment rate has a negative and significant effect on economic growth in Indonesia. Simultaneously, the number of poor people and the open unemployment rate have a positive and significant effect on economic growth in Indonesia.
UPAH, JENIS KELAMIN DAN USIA TERHADAP PRODUKSIVITAS KERJA KARYAWAN PADA INDUSTRI KECIL DI KABUPATEN ACEH UTARA (Studi Kasus Industri Kecil Konveksi)
Authors: Fauziah Fauziah , Ratna Ratna
Published: December 2021

Pengaruh Pendidikan, Pengalaman Kerja, Upah, Jenis Kelamin Dan Usia Terhadap Produksivitas Kerja Karyawan Pada Industri Kecil Di Kabupaten Aceh Utara (Studi Kasus Industri Kecil Konveksi)Tujuan penelitian ini digunakan untuk melihat adanya hubungan atau keterkaitan pendidikan, pengalaman kerja, upah, jenis kelamin dan usia terhadap produksivitas kinerja pegawai atau karyawan pada produksi industri konveksi di Kabupaten Aceh Utara. penelitian ini menggunakan data primer yang diperoleh data dari 89 responden. Metode analisis menggunakan Regresi Linear Berganda (RLB) dengan bantuan program Eviews 8. Dari hasil penelitian diperoleh variabel Pendidikan (X1) dan Usia (X5) tidak memiliki hubungan atau pengaruh secara signifikan dan negatif terhadap Produktivitas Kerja Karyawan Pada Industri Kecil Konveksi di Kabupaten Aceh Utara. Selanjutnya variabel Jenis Kelamin (X4) secara parsial memiliki hubungan negatif dan signifikan terhadap produktivitas tenaga kerja karyawan (Y) pada industri kecil konveksi di Kabupaten Aceh Utara. Variabel Pengalaman (X2) dan Upah (X3) secara parsial memiliki hubungan  signifikan dan positif terhadap produktivitas tenaga kerja karyawan (Y) pada industri kecil konveksi di Kabupaten Aceh Utara. Namun variabel pendidikan (X1), pengalaman (X2), upah (X3), jenis kelamin (X4) dan usia (X5) secara bersama-sama (serempak) memiliki hubungan secara signifikan dan positif terhadap Produktivitas Kerja karyawan Pada Industri Kecil Konveksi di Kabupaten Aceh Utara dan besar pengaruhnya adalah: 0,9071 (90,71%), sedangkan yang dipengaruhi oleh variabel lain di luar model penelitian ini adalah sebesar 0,0929 (9,29%).
PENGARUH MODAL DAN PERMINTAAN TERHADAP PENDAPATAN PEDAGANG IKAN TONGKOL LISONG DIKOTA LHOKSEUMAWE
Authors: Saraturrahmi Saraturrahmi , Juliansyah Hijri
Published: December 2021

Penelitian ini bertujuan untuk mengetahui seberapa besar Pengaruh Modal Dan Permintaan Terhadap Pendapatan Pedagang Ikan Tongkol Lisong di Kota Lhokseumawe. Data yang digunakan dalam penelitian ini ialah data primer yang diperoleh dari survey. Metode analisis data yang digunakan dalam penelitian ini adalah Model Regresi Linear Berganda. Variabel yang diteliti sudah terbebas dari uji asumsi klasik. Hasil penelitian menunjukkan secara simultan variabel modal dan permintaan berpengaruh positif dan signifikan terhadap pendapatan pedagang ikan tongkol lisong di Kota Lhokseumawe. Penelitian ini diperoleh nilai Koefisien determinasi  sebesar 0.815245 atau 81.5245 persen memberikan pengaruh yang signifikan terhadap pendapatan pedagang ikan tongkol lisong di Kota Lhokseumawe.
FAKTOR – FAKTOR YANG MEMPENGARUHI IMPOR BERAS INDONESIA
Authors: Nijar Jumai , Abbas Tarmizi
Published: December 2021

This study aims to determine the factors that influence rice imports in Indonesia. The data used in this study are time series in the period 1999-2017. The analytical model used in this study is the Multiple Linear Regression Model and the ARDL Model. The results showed that are that together the Inflation, Exchange Rate and Retail Prices variables had a positive and significant effect on Rice Imports. While partially Inflation and retail prices each had a positive and significant effect on the Import of Rice. There is no influence exchange rate and negative effect on Rice Imports. From the results of the ARDL model it can be seen that the long-run and short-run inflation variables had no significant and negative effect on rice imports and the long-run exchange rate variable had a significant and negative effect on rice imports. While in the short run the exchange rate variable had no effect on rice imports, while the retail price variable in the short and long run had a significant and positive effect on rice imports in Indonesia.
PENGARUH LUAS LAHAN, PRODUKSI, HARGA KAKAO INTERNASIONAL TERHADAP EKSPOR KAKAO INDONESIA
Authors: Hakiki Suci Indah , Asnawi Asnawi
Published: December 2021

This study aims to examine the effect of land area, production, international cocoa prices on Indonesian cocoa exports. The data used is the time series data for the period 1991-2017. This study uses two methods of analysis multiple linear regression analysis, the second is the Auto Regressive Distributed Lagged (ARDL). The test results using multiple linear regression analysis showed that as together of land area, production, international cocoa prices effected on Indonesian cocoa exports. Partially large areas, production and prices of international cocoa each have a positive and significant effect on Indonesian cocoa exports. The test results using ARDL indicated a cointegration positive and not significant long-run and short-term. Production and prices of international cocoa in long run and short term each influenced positively and significantly.
PENGARUH NILAI TUKAR PETANI SUB SEKTOR TANAMAN PANGAN DAN NILAI TUKAR PETANI SUB SEKTOR PERIKANAN TERHADAP INDEK PEMBANGUNAN MANUSIA DI KABUPATEN ACEH UTARA
Authors: Andriyani Devi , Mulia Eka
Published: December 2021

This study aims to analyze the Effect of Exchange Rate of Farmers in the Food Crop Sub Sector and the Farmers' Exchange Rate of Fisheries in the Human Development Index in North Aceh Regency. The data used in this study are secondary data from 2009-2017. The analysis model of this study uses multiple linear regression. The results of the research partially affect the food crop sector in the Human Development Index in the North Aceh Regency government, the fisheries sector influences the Human Development Index in the North Aceh Regency government. Simultaneously the food crop sector and the fisheries sector influence the Human Development Index in the North Aceh Regency government
PENGARUH EKSPOR IMPOR KAKAO DAN KARET TERHADAP CADANGAN DEVISA DI INDONESIA
Authors: Mustafa Mustafa , Andriyani Devi
Published: December 2021

This study aims to analyze the effect of cocoa and rubber export imports on foreign exchange reserves in Indonesia. This study uses secondary data from 2005-2017 obtained from the Central Bureau of Statistics of Indonesia. The data analysis method used multiple linear regression models. The results partially show that cocoa and rubber export impors do not significantly influence the foreign exchange reserves in Indonesia. Simultaneous cocoa and rubber export imports have a positive and significant effect on foreign exchange reserves in Indonesia. The amount of influence is 0,9059 or 90,59% while the rest is influenced by other variables outside the model by 09,41%.
PENGARUH PRODUKSI DAN PRODUKTIVITAS PETANI TERHADAP IMPOR JAGUNG DI INDONESIA TAHUN 1993-2018
Authors: Zahara Zahara , Andriyani Devi , Juanda Reza
Published: December 2021

This research aims to analyze the effect of corn production and productivity of maize farmers on imports in Indonesia in 1993-2018. The data used in this research are secondary data for the 1993-2018 period. This research model uses multiple linear regression. The results of the research that corn production partially has a negative effect on corn imports in Indonesia. Rice farmer productivity has a positive effect on corn imports in Indonesia. Simultaneously, maize production and productivity of maize farmers have an effect on maize imports in Indonesia
Faktor-Faktor Yang Mempengaruhi Pendapatan Petani Kelapa Sawit (Studi Kasus Di Kabupaten Pasaman Barat Kecamatan Ranah Batahan)
Authors: Pangidoan Naf’an , Andriyani Devi
Published: December 2021

This study aims to analyze the factors that influence the income ofoil palm farmers in Ranah Batahan District, West Pasaman Regency. Thedata used in this research is secondary data. The method used to analyzethe relationship between variables is multiple linear regression analysis.The results showed that work experience, age, working time andproduction had a positive and significant effect on the income of oil palmfarmers in Ranah Batahan District, West Pasaman Regency.Simultaneously, business experience, age, working time and productionaffect the income of oil palm farmers in Ranah Batahan District, WestPasaman Regency
PENGARUH INPUT DAN PRODUKSI SAWIT TERHADAP PDRB INDONESIA
Authors: Juanda Reza , Mutia Intan , Hasibuan Ahmad Fauzul Hakim
Published: December 2021

This istudy iexamined ithe iinfluence iof ilabor, iland iarea, iand itheiamount iof ioil ipalm iproduction ion iGross iRegional iDomesticiProduct i(GRDP) iin iIndonesia. iThis istudy iused ithe ipanel idataimethod ito idetermine ithe ieffect iof iindependent ivariables ionidependent ivariables. iThe idata iused iwas isecondary idata ifrom i2015ito i2018. iThe iresults ishowed ithat ilabor iand ithe iamount iofiproduction isignificantly iinfluenced iGRDP, iwhile ithe iland iarea ihadino isignificant ieffect ion iGRDP.
PENGARUH JUMLAH PENDUDUK USIA PRODUKTIF, KEMISKINAN DAN INFLASI TERHADAP PERTUMBUHAN EKONOMI DI KABUPATEN BIREUEN
Authors: Mawati Fatmawati , Anwar Khairil
Published: December 2021

Tujuan penelitian ini untukmengetahui pengaruh jumlah penduduk usia produktif, kemiskinan dan  inflasi terhadap pertumbuhan ekonomi di Kabupaten Bireuen. Data yang digunakan dalam penelitian ini adalah data sekunder dalam bentuk time series selama 2006-2016 dan datadianalisis menggunakan model analisis regresi linier berganda menggunakan perangkat pengolah data Eviews.  Dari hasil penelitian diperoleh bahwa jumlah penduduk usia produktif berpengaruh signifikan, sedangkan kemiskinan dan inflasi tidak berpengaruh terhadap pertumbuhan ekonomi di Kabupaten Bireuen pada periode 2006-2016.
PENGARUH TOTAL PENDUDUK DAN PRODUK DOMESTIK REGIONALBRUTO TERHADAP PENDAPATAN ASLI DAERAH KABUPATEN SIMEULUE
Authors: Sulkadria Sulkadria , Juliansyah Hijri
Published: December 2021

Tujuan penelitian ini adalah untuk mengetahui pengaruh Total Penduduk, Produk Domestik Regional Bruto Terhadap PAD Kabupaten Simeulue tahun 2007-2016, metode analisis data yang digunakan adalah regresi linear berganda. Hasil penelitian ini dapat disimpulkan bahwa secara parsial variabel total penduduk tidak berpengaruh terhadap PAD sedangkan Produk Domestik Regional Bruto berpengruh positif terhadap PAD di Kabupaten Simeulue untuk periode analisis 2007-2016. Nilai R2 (determinasi) adalah sebesar 0.770166, artinya variabel PAD mampu dijelaskan oleh variabel total penduduk dan variabel Produk Domestik Regional Bruto sebesar 77%.
ANALISIS INTEGRASI PEMBIAYAAN SEKTOR PERTANIAN DAN NILAI TUKAR PETANI DI INDONESIA
Authors: Maulana Hafiiz
Published: December 2021

Islamic banking in the context of the agricultural sector has decreased performance in the proportion of financing. The existence of this alleged decline occurred because it was influenced by Farmer Exchange Rate. This study aims to identify the relationship between the financing performance of the Islamic banking sector and the Farmer Exchange Rate in Indonesia. The analysis used the Vector Error Correction (VECM) Model from January 2009 until December 2017. The results of the tests carried out consider the determinants of other variables in the form of non-performing financing and the based credit interest rate. Agricultural sector financing, in the long run, has a significant effect on increasing Farmer Exchange Rate, but this influence is not responsive in the short term. The findings predict that Non-performing financing will reduce the proportion of financing in the agricultural sector to Islamic banks. Determination of Basic Interest Rates Credit is the most responsive variable to changes in the financing of Islamic banking and Farmer Exchange Rates in Indonesia.
ANALISIS HUBUNGAN KAUSALITAS ANTARA JUB, BI RATE DAN INFLASI DI INDONESIA TAHUN 2010-2016
Authors: Sari An , Anwar Khairil
Published: December 2021

Tujuan penelitian ini adalah untuk melihat hubungan kausalitas antara JUB,  BI Rate dan inflasi. Data yang digunakan dalam penelitian ini adalah data skunder dalam bentuk time series (runtun waktu) selama kurun waktu Januari  2010 sampai dengan Desember 2016 di Indonesia. Analisis data yang digunakan adalah metode Granger Causality yang diolah dengan bantuan program Eviews 9. Hasil penelitian menunjukan bahwa, tidak terdapat kausalitas antara JUB dengan BI Rate. Selanjutnya juga tidak terdapat hubungan kausalitas antara JUB dengan inflasi. Kemudian terdapat hubungan satu arah antara BI Rate dengan inflasi.
PENGARUH PENGETAHUAN, PENDAPATAN, DAN KEPERCAYAAN, TERHADAP MINAT MUZAKKI DALAM MEMBAYAR ZAKAT DI BAITUL MAL KOTA LHOKSEUMAWE
Authors: Fahmi Zul , M.Nur Mukhlish
Published: December 2021

ABSTRACT This study aims to examine the influence of knowledge, income, and trust of muzzaki on their motivation to pay zakat at BaitulMal, Lhokseumawe. This study employs quantitative method with 75 traders at Pasar Los, Lhokseumawe, as the samples. The data were collected using questioner and were analyzed using multiple linear regression with validity test and reliability test following the analysis. The result shows that all independent variables which are identified as Knowledge (X1), income (X2), and trust (X3) simultaneously influence the dependent variable which is identified as muzakki’s motivation in paying zakat at BaitulMal, Lhokseumawe (Y). The result suggests that knowledge (X1) and trust (X3) partially influence the muzakki’s motivation in paying zakat, while income (X2) does not influence the motivation. The significance of the influence can be seen from the adjusted R square (R2) value which is realized by 32,1%, while the other 67,9% was the influence from other variables outside this study.
PENGARUH JUMLAH UANG BEREDAR DAN JUMLAH PENDUDUK TERHADAP PERTUMBUHAN EKONOMI DI INDONESIA
Authors: Yosephina Risky Meri , Murtala Murtala
Published: December 2021

This study aimed to determine the effect of the money supply and population on economic growth in indonesia in the short and long term. This study used time series data from 1994 to 2017. The data analysis method used is the Auto Regressive Distributed Lagged (ARDL) approach. The results showed that all variables are stationary at the co-integrated in the long run. The model stability test results showed that the model used was stable. The results show that all variables were stationary at the co-integrated level in the long run. The model stability test results showed that the model used is stable. Partially, in the analysis of short-term money supply had a negative and significant effect on the economic growth in Indonesia, and the population had a positive and significant effect on the value of economic growth in Indonesia. In the long-term analysis, the money supply had a negative and significant effect on the economic growth in Indonesia, and the population had a positive and significant effect on the economic growth in Indonesia. The coefficient determination R2 was 91.56 percent.
ANALISIS KETIMPANGAN PENDAPATAN DI PROVINSI ACEH
Authors: Meliza Meliza , Murtala Murtala
Published: December 2021

Thisstudyaimsto analyze the factorsthatinfluence income inequality in Aceh Province. This study uses secondary data obtained from the Central Bureau of Statistics of Aceh Province in 2010-2017. Data analysis techniques used are the williamsonindex, entropytheil index, and multiplelinear regression analysis. Thetestresults using the Williamson index show that income inequality in Aceh Province is still quite high at 0.41%, and from the entropy theil index testing shows very high-income inequality at 1.47%, Economic growth (Growth) does not affect income inequality (INEQ) The unemployment rate (Unemp) does not affect income inequality (INEQ), the Gross enrollment rate (GER) affects income inequality (INEQ), and Agglomeration (Aglo) does not affect income inequality (INEQ).Keywords: income inequality.
PENGARUH PDRB DAN PENGELUARAN PEMERINTAH PROVINSI PAPUA TERHADAP KEMISKINAN DI PAPUA
Authors: Marlina Marlina , Usman Umaruddin
Published: December 2021

The purpose of this study was to see the effect of GRDP and Expenditure on the Provincial Government of Papua on Poverty in Papua. The data used in this study are secondary data sourced from the Central Statistics Agency (BPS). The data analysis method used in this study is multiple linear regression with the help of the program package eviews 10. The results showed that the GRDP variable has a negative effect on poverty, while the government expenditure variable does not negatively affect poverty, but together the GRDP variable and Government expenditure positively influences poverty in Papua and the magnitude of the effect of GRDP variable and government expenditure on poverty is 0.6966 (69.66%). Recommendations, it is expected that the local government of Papua can increase the GRDP which will be able to minimize poverty in Papua.Keywords: GRDP, Government Expenditure and Poverty
Pengaruh Pendapatan Asli Daerah, Dana Alokasi Umum, Dana Alokasi Khusus Dan Dana Otonomi Khusus Terhadap Belanja Daerah Kabupaten/Kota Di Provinsi Aceh
Authors: Putra Iqbal , Abbas Tarmizi , Ratna Ratna
Published: December 2021

This study aims to examine the effect of Own Source Revenues, General Allocation Funds, Special Allocation Funds, and Special Autonomy Funds on Regional Expenditures. This study uses a combination of cross section data with time series in 23 regencies/cities in Aceh Province during 2010-2017, obtained from the Budget Realization Report (LRA) issued by the Directorate General of Regional Financial Management of the Ministry of Finance (DJPK Ministry of Finance). The data analysis method used is Panel Data Regression with the help of Eviews 10. The results of this study prove that Own Source Revenues, General Allocation Funds, Special Allocation Funds, and Special Autonomy Funds have a positive and significant effect on regional expenditures. The magnitude of the effect of Own Source Revenues, General Allocation Funds, Special Allocation Funds, and Special Autonomy Funds on regional expenditure is 94.22% and the remaining 5.78% is influenced by other variables outside this research model. It is recommended to local governments to use Own Source Revenues, General Allocation Funds, Special Allocation Funds, and Special Autonomy Funds effectively and efficiently so that Regional Expenditures can be increased, and the Special Autonomy Fund should be used in the interests of the general publicso as to reduce poverty and the people of Aceh become more prosperous.
Analisis Kontribusi Sektor Industri Pengolahan Dan Pengaruh Bagi Hasil Pajak Terhadap Produk Domestik Regional Bruto (PDRB) Di Kabupaten Aceh Utara Tahun 2008-2017
Authors: Sulaiman Sulaiman , Murtala Murtala
Published: December 2021

The purpose of this study was to determine the effect of tax revenue sharing (X) on GRDP (Y) in North Aceh District and find out the contribution of the manufacturing sector to GDP in North Aceh District. To achieve this goal, this study uses secondary data in the form of time series in 2008-2017 which are sourced from the North Aceh Regency BPS. A data analysis method using Simple Linear Regression and Analysis of GRDP Sector Contribution. The results showed that partially stated that tax revenue sharing had no significant effect on GRDP in North Aceh District. The contribution of the manufacturing sector to the GRDP in North Aceh District was the largest in 2015, which was 16% and the smallest occurred in 2008 at 4.09%. The average contribution of the manufacturing sector to the GRDP in North Aceh Regency over the past 10 years is 11.59%.
Pengaruh Ekspor Ikan Tongkol/Tuna Indonesia Ke Jepang Terhadap Pertumbuhan Ekonomi Di Indonesia Dengan Model Dinamis Regression
Authors: Andriyani Devi , Syahputra Try Wahyu
Published: December 2021

This study aimed to determine the effect of Tuna exports from Indonesia to Japan on the economic growth in Indonesia. This study used time series data during 2002-2015 obtained from the Central Bureau of Statistics. The data analysis method used in this study was the Vector Autoregression (VAR) approach. The results showed that the Indonesian Tuna exports to Japan had a negative and insignificant effect on economic growth. While the results based on the impulse response analysis can be said that when a shock occurs in economic growth, it takes one year so that Tuna exports can return to reach its equilibrium or equilibrium point. Based on the analysis of variance decomposition, it can be concluded that the exports of Tuna make a large contribution to economic growth.Keywords:Economic Growth, Tuna Exports from Indonesia