bluuebunny/crossref_metadata_2025 huggingface dataset:
KARAKTERISTIK PUTARAN MOTOR CONVEYOR DENGAN VARIASI ELEMEN MESIN AKIBAT GETARAN MEKANIS
Authors: Weriono  , Rinaldi  , Siswo Pranoto
Published: June 2021

Mesin penggerak conveyor terdiri dari motor, gearbox, serta conveyor sebagai alatmemindahkan lumpur dengan motor 2,2 KW putaran 1400 rpm. Rangsangan gaya luarmenyebabkan terjadinya getaran paksa jika rangsangan tersebut berosilasi maka sistemdipaksa bergetar pada frekuensi ransangan. Penelitian memfokuskan pada analisa getaran padabagian block mesin yaitu Seal input gearbox, Gear input dan Seal Output gearbox searahhorizontal dengan mengukur kecepatan getaran dan temperatur yang dihasilkan. Getaran pada daerah3 yaitu seal output gearbox mengalami peningkatan 4,95 mm/s yang tidak stabil sehingga diprediksibahwa elemen tersebut getarannya tidak stabil dibandingkan gear input dan seal ouput gearboxsehingga perlu adanya perbaikan lebih lanjut. Daerah 2 yaitu gear input mengalami peningkatantemperatur 53,6 0C dibanding daerah 1 dan 3 tetapi elemen tersebut masih dalam kondisi stabil.Getaran terjadi pada elemen mesin berbeda beda pada setiap priode waktu serta temperatur kerjasetiap elemen mesin juga mengalami perubahan setiap priode waktu.
MONITORING KERENTANAN BANGUNAN GEDUNG DENGAN METODE RAPID VISUAL SCREENING
Authors: Sri Agustin  , Reni Suryanita  , Zulfikar Djauhari
Published: June 2021

Rapid Visual Screening (RVS) adalah sebuah metode peninjauan kondisi bangunan terhadap gempasecara visual, menggunakan form analisis khusus yang merangkum seluruh hasil tinjauan visual danmenghasilkan nilai akhir minimal 2 (dua) untuk kondisi aman terhadap gempa, jika kurang dari 2 (dua) makagedung perlu dilakukan evaluasi lebih lanjut. Tujuan penelitian ini untuk menganalisis tingkat resiko bangunangedung terhadap gempa dan mampu menentukan nilai akhir (final score) sebagai keluaran dari metode RapidVisual Screening (RVS). Hasil Respons Spektral MCE perioda pendek, redaman 5% (Ss) dan Respons SpektralMCE perioda 1 detik, redaman 5% (S1) pada penelitian ini berada di Moderate Seismicity, analisis, kondisibangunan gedung pada penelitian tergolong ke dalam kondisi tidak rawan gempa, hal ini dibuktikan dari seluruhnilai akhir (final score)berada di atas angka minimal yaitu 2 (dua), hanya pada Gedung Plaza Rengat yangmemiliki kombinasi dari 2 (dua) jenis tipe gedung C1(Concrete moment resisting frames) bernilai 2,3 dan C3(Concrete frames with unreinforced masonry infill walls), dengan nilai pada C3 adalah 1,3 dari angka minimal,karena pada bagian tengah dalam gedung terdapat kondisi struktur yang tidak diperkuat dengan tambahanbalok dari lantai 2 hingga lantai 4. Gedung Kantor Bupati, Dinas Pendidikan, Dinas Perpustakaan, SejutaSungkai, dan SD Negeri 006 menghasilkan final score di atas angka 2 (dua). Dengan begitu bangunan gedungpada penelitian ini berada pada kondisi aman akan terjadinya gempa.
STUDI EKSPERIMENTAL BALOK BETON BERTULANG DENGAN DAN TANPA SENGKANG
Authors: Dimas Arief Wicaksono  , Reni Suryanita  , Zulfikar Djauhari
Published: June 2021

Gaya geser yang terjadi pada balok ditahan oleh ikatan antar materialdan tulangan sengkang. Balok beton bertulang tanpa menggunakansengkang akan mengalami perubahan kekuatan dan pola keruntuhan.Perubahan kekuatan dan keruntuhan terjadi karena penurunankapasitas geser. Perubahan regangan dan tegangan yang terjadi perludianalisis lebih lanjut. Tujuan dari penelitian ini adalah untukmenganalisis perubahan dan pengaruh yang terjadi akibat penurunankapasitas geser balok beton tanpa sengkang. Benda uji yang digunakanadalah balok beton bertulang dengan lebar 10 cm, tinggi 20 cm,panjang 125 cm dan jarak tumpuan ke beban 50 cm. Tulangan yangdigunakan berupa tulangan tekan diameter 8 mm dan tulangan tekandiameter 10 mm masing-masing sebanyak 2 buah. Pada balok dengansengkang menggunakan sengkang dengan diameter 6 mm dan jarakantar sengkang 53,3 mm. Kuat tekan beton yang digunakan adalah 20MPa. Penelitian dilakukan dengan analisis numerik menggunakanaplikasi Response-2000 dan Finite Element LUSAS V17. Sedangkaneksperimental dilakukan dengan pengujian lentur satu titikpembebanan. Analisis numerik menggunakan LUSAS diperolehpembebanan lentur balok dengan sengkang maksimum sebesar 46,17kN. Sedangkan pada balok tanpa sengkang beban lentur maksimumsebesar 43,76 kN. Gaya maksimum pada pembebanan lentur balok ujidengan sengkang 48,40 kN lebih besar daripada balok uji tanpasengkang yaitu 45,90 kN. Berdasarkan hasil analisis numerikdiperoleh bahwa balok uji tanpa sengkang memiliki kemiringan polaretak yang lebih besar dari pada balok dengan sengkang mendekati 45derajat. Penurunan kapasitas geser penampang balok menyebabkanberubahnya resultan gaya sehingga pola keruntuhan berubah.
ANALISIS INDIKATOR KLASIFIKASI DAS KAMPAR KANAN BERDASARKAN KRITERIA TATA AIR
Authors: Nafisah  , Manyuk Fauzi  , Andy Hendri
Published: June 2021

Monitoring dan evaluasi kinerja Daerah Aliran Sungai (DAS) penting dilakukan untukmengetahui pengelolaan DAS. Berhasil atau tidaknya pengelolaan DAS berkaitan denganindikator kinerja kelestarian DAS yaitu kelestarian lingkungan yang meliputi tata air.Berdasarkan Lampiran Surat Keputusan Menteri Kehutanan tentang PedomanPenyelenggaraan Pengelolaan DAS No P.61/Menhut-II/2014, bahan monitoring dan evaluasikinerja Sub DAS dibagi menjadi lima kriteria, salah satunya yaitu kondisi tata air. Kondisitata air dinilai berdasarkan parameter yang meliputi koefisien regim aliran, indeks penggunaanair, koefisien aliran tahunan, banjir. Tujuan penilitian ini adalah untuk menganalisis indikatorkriteria klasifikasi Sub DAS Kampar kanan sehingga diketahui hasil klasifikasi parameteryang dikaji. Hasil penelitian menunjukkan Koefisien Regim Aliran (KRA) diklasifikasikansangat rendah dengan nilai 10,769, artinya aliran sungai pada DAS relatif konstan baik padamusim banjir maupun kemarau. Indeks Penggunaan Air (IPA) diklasifikasikan sangat rendahdengan nilai 0,008, artinya DAS Kampar masih menghasilkan air untuk wilayah di hilirnya.Koefisien Aliran Tahunan (KAT) diklasifikasikan sangat tinggi dengan nilai 1,309, artinyacurah hujan yang jatuh menjadi limpasan langsung dan tidak terserap ke dalam tanah. Banjirdikategorikan sangat tinggi dengan frekuensi kejadian 2 (dua) kali dalam 1 tahun, artinyafungsi tata air dari DAS tersebut sudah semakin terganggu sehingga perlu segera untukdirehabilitasi.
PERILAKU MEKANIK BALOK BETON BERTULANG TANPA DAN DENGAN SENGKANG PASCABAKAR
Authors: Dede Eldi Kurniawan  , Reni Suryanita  , Zulfikar Djauhari
Published: June 2021

Kebakaran menyebabkan kerusakan pada balok beton bertulang. Pada saat kebakaran terjadiperubahan kimiawi secara bertahap pada beton bertulang. Akibat perubahan kimiamenyebabkan beton kehilangan kekuatannya. Tujuan dari penelitian ini adalah menganalisislendutan dan kerusakan dari balok beton bertulang tanpa dan dengan sengkang pascabakar.Ukuran benda uji pada penelitian ini 100 mm x 200 mm dengan panjang bentang 1250. Padabalok menggunakan tulangan tekan dengan diameter 8 mm dan tulangan tarik dengandiameter 10 mm masing-masing sebanyak 2 buah dan diameter sengkang 6 mm dengan jarakantar sengkang 53,3 mm. Pembakaran benda uji dilakukan pada tungku batu bata dengandurasi pembakaran benda uji selama 60 menit. Penelitian dilakukan berupa analisis lendutanmenggunakan finite element LUSAS V17 dan secara teoritis. Berdasarkan hasil menggunakanfinite element LUSAS terdapat perbedaan lendutan dan beban maksimum yang terjadi padabalok beton bertulang tanpa dan dengan sengkang setelah mengalami kebakaran. Pada baloktanpa sengkang pascabakar terjadi lendutan 39,91% lebih besar dibandingkan balok dengansengkang pascabakar dan beban maksimum yang terjadi pada balok dengan sengkangpascabakar 1,62% lebih besar dibandingkan balok tanpa sengkang pascabakar, sedangkananalisis secara teoritis pada balok dengan sengkang pascabakar terjadi lendutan 16,67% lebihbesar dibandingkan balok tanpa sengkang pascabakar dan beban maksimum yang terjadi padabalok dengan sengkang pascabakar 28,25% lebih besar dibandingkan balok beton bertulangtanpa sengkang pascabakar. Berdasarkan hasil yang diperoleh dari analisis menggunakanfinite element LUSAS dan secara teoritis dapat disimpulkan bahwa sengkang berpengaruhterhadap ikatan pada balok beton bertulang setelah mengalami kebakaran.
Simulasi Sifat Termal Bata Ringan Celullar Lightweight Concrete Menggunakan LUSAS V.17
Authors: Abrar Rifqi Pratama  , Reni Suryanita  , Ismediyanto
Published: June 2021

Perkembangan penduduk yang semakin pesat menyebabkan kebutuhan yang semakin tinggiterhadap pembangunan. Semakin meningkatnya pembangunan maka semakin meningkat pulakebutuhan terhadap bahan bangunan. Ini menyebabkan semakin banyak solusi alternatif yangditawarkan untuk bahan bangunan salah satunya adalah bata ringan CLC. Bata ringan CLCmulai banyak digunakan sebagai pengganti bata merah karena memiliki density yang lebihkecil dari bata merah namun masih minim penelitian tentang bata ringan CLC ini. Padapenelitian ini dilakukan analisis perbandingan suhu yang diserap oleh bata ringan CLC danbata merah dengan ukuran 60 cm x 10 cm x 20 cm dan variasi density bata ringan CLC 600kg/m3, 700 kg/m3, 800 kg/m3, 900 kg/m3, 1000 kg/m3 dan bata merah 1700 kg/m3. Analisispenjalaran panas dilakukan menggunakan perangkat lunak LUSAS V17 dengan variasi suhumulai dari suhu 30 0C hingga 1000 0C yang terpapar selama 2 jam. Hasil penelitian didapatkanbahwa bata ringan CLC dengan density 600 kg/m3 menghasilkan tahanan panas sekitar45,59%, bata ringan CLC dengan density 700 kg/m3 menghasilkan tahanan panas sekitar37,925 %, bata CLC dengan density 800 kg/m3 menghasilkan tahanan panas sekitar 32,78 %,bata CLC dengan density 900 kg/m3 menghasilkan tahanan panas sekitar 29,13 %, bata CLCdengan density 1000 kg/m3 menghasilkan tahanan panas sekitar 26,39 %, sedangkan batamerah tahanan panas sekitar 25,92 %. Dari penelitian ini dapat disimpulkan bahwa bata CLClebih nyaman digunakan untuk dinding ruangan dibandingkan dengan bata merah.
Analisis Sifat Mekanik Bata Ringan Cellular Lightweight Concrete Menggunakan Program LUSAS V17
Authors: Roma Dearni  , Reni Suryanita  , Ismediyanto
Published: June 2021

Kemajuan teknologi yang semakin pesat pada perkembangan dunia konstruksi modern,sehingga memunculkan inovasi baru dalam dunia konstruksi. Salah satunya adalah pembuatanbata ringan Cellular Lightweight Concrete (CLC). Density yang rendah memungkinkan resikoketika terkena getaran atau percepatan tanah, salah satunya getaran yang disebabkan olehgempa bumi dapat diperkecil. Untuk itu, penggunaan bata ringan efektif dalam konstruksibangunan tinggi maka perlu dilakukan simulasi numerik pada bata ringan agar mempermudahkita menganalisis sifat mekanik bata ringan di lapangan. Penelitian ini bertujuan untukmenghasilkan nilai penurunan pada uji laboratorium serta menganalisis sifat mekaniktegangan, regangan dan modulus elastisitas pada pemberian beban yang bervariasi. Pemberianbeban berdarkan data optimum pada uji laboratorium maka di pakai rentang beban dimulaidari 20 kN hingga 35 kN dengan variabel beban 0,5 kN. Pemodelan benda uji memilikipanjang 60 cm, lebar 10 cm dan tinggi 20 cm. Parameter input pada program menggunakanhasil uji laboratorium yang telah dilakukan pada penelitian sebelumnya berupa nilai moduluselastisitas, poisson ratio dan densitas. Hasil penelitian didapatkan nilai penurunan permukaanpada pemberian beban 26 kN saat uji laboratorium sebesar 4,82 mm, sedangkan secaranumerik menghasilkan 4,94 mm. Pemberian beban 35 kN menimbulkan penurunanpermukaan maksimal sebesar 6,65 mm. Nilai tegangan maksimal yang ditimbulkan pada saatsimulasi numerik sebesar 0,82 N/mm2, sedangkan nilai regangan dihasilkan sebesar 0,026.Berdasarkan penelitian ini disimpulkan bahwa nilai penurunan pada eksperimental lebih kecildibandingkan dengan analisis menggunakan pemrograman LUSAS V.17 dan disimpulkanbahwa semakin besar beban yang diberikan maka semakin besar juga nilai tegangan regangandan penurunannya.
Kontrol Perencanaan Struktur Rangka Beton Bertulang Berdasarkan Indeks Kerusakan
Authors: Dwiqhee Abdul Ghani  , Zulfikar Djauhari  , Reni Suryanita
Published: June 2021

Perencanaan struktur beton bertulang umumnya menggunakan metodestrength based design atau biasa disebut force based design (FBD). MetodeFBD tidak mampu mengidentifikasi kinerja dan indeks kerusakan strukturyang terjadi, maka diperlukan analisis lebih lanjut yang dinamakanperformance based design (PBD). Tujuan dari penelitian ini adalahmengidentifikasi pengaruh rasio tulangan kolom dan balok terhadap indekskerusakan struktur. Pada penelitian ini, indeks kerusakan statis struktur (DIE)dihitung berdasarkan luasan kurva spektrum kapasitas yang telah dibuatberdasarkan ATC-40 melalui analisis pushover. Struktur yang dianalisismerupakan struktur rangka beton bertulang 4 lantai dengan pembebanangempa rencana berdasarkan SNI 1726-2012. Nilai parameter yang ditinjauadalah nilai rasio tulangan balok dan kolom beserta pengaruhnya terhadapindeks kerusakan struktur (DIE). Hasil analisis indeks kerusakan menunjukanbahwa portal dengan rasio tulangan balok 0,579% dan rasio tulangan kolom2,268% lebih layak untuk menahan beban gempa rencana karena nilai DIEyang terjadi adalah 2,508. Nilai ini tidak melebihi indeks kerusakan statisrencana (DIS) yang telah dijadikan ambang batas untuk kerusakan sedangyaitu sebesar 0,2519. Penelitian ini diharapkan dapat menjadi acuan danrekomendasi untuk perencanaan struktur bangunan tahan gempa.
Model Hidrologi Untuk Prediksi Elevasi Muka Air Tanah Pada Gambut Tropis Sebagai Upaya Mitigasi Kebakaran di Kabupaten Bengkalis
Authors: Aris Fadillah  , Ari Sandhyavitri  , Sigit Sutikno
Published: June 2021

Salah satu komponen terpenting untuk mencegah terjadi kebakaran dilahangambut adalah elevasi muka air tanah gambut. Model hidrologi untukmemprediksi muka air tanah gambut tropis dalam upaya mitigasi kebakaranlahan gambut berdasarkan data curah hujan dan data muka air tanah (GroundWater Level). Pembuatan pemodelan akan dilakukan dengan cara mencarikorelasi antara data curah hujan terhadap kenaikan muka air tanah (dWRain)dan korelasi muka air tanah terhadap penurun elevasi muka air tanah (dWlose)dengan data curah hujan. Pemodelan terdiri dari tiga model yaitu : Pemodelan 1dengan data curah hujan dan muka air tanah data 1 bulan, Pemodelan 2 datacurah hujan dan muka air tanah data 3 bulan dan Pemodelan 3 data curah hujandan muka air tanah data 6 bulan. Hasil analisis Pemodelan 1 dengan data curahhujan dan muka air tanah 1 bulan (dWRain) korelasi R² = 0.9029 (korelasisangat kuat) dengan persamaan : y = 0.8993x + 0.0004 sedangkan (dWlose)korelasi R² = 0,1053 (korelasi sangat lemah) dengan persamaan : y = -0,1754x+ 0,046, dilihat dari grafik untuk pemodelan 1 grafik muka air tanah gambutprediksi kurang mengikuti grafik muka air tanah terukur di lapangan dengannilai MSE (Mean Squared Error) = 0.13 dan MAPE (Mean AbsolutePercentage Error) = 92,21 %. Hasil analisis Pemodelan 2 dengan data curahhujan dan muka air tanah 3 bulan dWRain korelasi R² = 0.7078 (korelasi kuat)dengan persamaan : y =1.1069x + 0.0002 sedangkan, (dWlose) korelasi R² =0.0825 (korelasi sangat lemah) dengan persamaan : y = 0.0169x+0.0019,dilihat dari grafik untuk pemodelan 2 grafik muka air tanah prediksi kurangmengikuti pola grafik muka air tanah terukur di lapangan dengan nilai MSE =0.06 dan MAPE = 86,75, %. Hasil analisis Pemodelan 3 dengan data curahhujan dan muka air tanah 6 bulan dWRain korelasi R² = 0.2583 (korelasicukup) dengan persamaan : y =1.211x + 0.0032 sedangkan (dWlose) korelasiR² = 0.0083 (korelasi sangat lemah) dengan persamaan : y = 0.0133x+0.0104dilihat dari grafik untuk pemodelan 3 grafik muka air tanah sudah mengikutipola muka air tanah terukur di lapangan dengan nilai MSE = 0.01 dan MAPE =37.49 %.
Low Cost Health Monitoring Sytem Based on Internet Of Things Using Email Notification
Authors: Hari Wisana I Dewa Gede , Utomo Bedjo , Amrinsani Farid , Purwanto Era
Published: June 2021

Monitoring activities are needed if there are symptoms of a disease that require quick action so that the patient's condition does not get worse, for that we need a system that can notify doctors so they can take action. The patient monitoring system in hospitals is generally still carried out conventionally, among others, nurses or doctors come to the patient's room to check on the progress of the patient's condition, this will be a problem, if the number of medical personnel and facilities is insufficient to monitor. Patients who need special attention for patient care, such as monitoring the patient's breathing rate. The use of the internet of things (IOT), as a device that can work without the help of people, can perform tasks and provide easier and real time data, so that they can access output directly. The purpose of this research is to design an inexpensive health monitoring tool based on the Internet of Things (Respiration Parameters) using a piezoelectric sensor and an ESP32 Wi-Fi module. From the results of the module design taken from 10 respondents, obtained that the average measurement high accuracy (17.76 + 0.61) and the average level of stability of the design has a magnitude of 0.4 so that it can be concluded that using a piezoelectric sensor in this series can obtain good accuracy. This the design can be used to monitor a person's respiration in real-time
A Low Cost Baby Incubator Design Equipped with Vital Sign Parameters
Authors: Lamidi Lamidi , Kholiq Abd , Ali Muslim
Published: June 2021

A baby incubator is a heating device for premature babies so that the baby's temperature matches the temperature in the mother's womb. Premature babies are babies born in abnormal conditions where the baby's body size is below average or the gestational age has not reached 9 months. The aim of this study was to create a compact system at a low cost in an infant incubator. Apart from stabilizing the temperature, it can also calculate the premature baby's heart rate and oxygen saturation value. The contribution of the system being built can detect the early symptoms of congenital abnormalities so that abnormalities detection becomes more practical. The temperature stability in this system uses a threshold system, where the sensor readings are compared with the set point value. Meanwhile, the SpO2 system uses a finger sensor attached to the baby's finger to detect oxygen saturation and heart rate. The signal from the sensor is processed in a signal conditioning circuit consisting of an astable circuit, filter and amplifier, LPF, and demultiplexer. Based on the results of testing and measurement, the difference produced by this tool is only 0.13 - 0.182 ° C. The biggest error in the system is 0.517%. Measurement of skin temperature was carried out on 10 respondents with an average value of 34.825 ° C. so that the difference generated from this tool is only 0.175 ° C, the difference on the Humidity parameter is 0.21%. The average BPM reading of respondent 1 was 81 beats per minute and the average SpO2 value was 97%. The average BPM reading of respondent 2 was 83 beats per minute and the average SpO2 value was 98%. You can see that the module with the Arduino control system can work automatically and is able to adjust the stability of the baby incubator according to the settings. In addition, the BPM and SpO2 systems are within tolerance so they can be used for patient measurements
A Wearable Brain-Computer Interface Instrument with Aug- Mented Reality-Based Interface for General Applications
Authors:   SRM Institute of Science & Technology, Ramapuram, Chennai,Tamil Nadu,India., Flavia Ms. Judy , Patel Aviraj ,   SRM Institute of Science & Technology, Ramapuram, Chennai,Tamil Nadu,India., Jha Diwakar Kumar ,   SRM Institute of Science & Technology, Ramapuram, Chennai,Tamil Nadu,India., Jha Navnit Kumar ,   SRM Institute of Science & Technology, Ramapuram, Chennai,Tamil Nadu,India.
Published: June 2021

In the project we are demonstrating the combined usage Augmented Reality(AR) and brain faced com- puter interface(BI) which can be used to control the robotic acuratorby.Thismethod is more simple and more user friendly. Here brainwave senor will work in its normal setting detecting alpha, beta, and gam- ma signals. These signals are decoded to detect eye movements. These are very limited on its own since the number of combinations possible to make higher andmorecomplextaskpossible.Asasolutiontothis AR is integrated with the BCI application to make control interface more user friendly. Thisapplication can be used in many cases including many robotic anddevicecontrollingcases.HereweuseBCI-ARto detect eye paralysis that can be archive by detecting eyelidmovementofpersonbywearingheadbend.
Utilization of Arduino Control in Mitigating the Hybrid Harmonics of DC/AC Inverter
Authors:   Assistant Professor - EEE, Rohini College of Engineering and Technology,Vallioor., Priya N. Amutha
Published: June 2021

This Paper deals with the implementation of Harmonics distortion in distribution system by using the method of hybrid of active filter and passive filters. The active filter is used to reduce the distortion present in the output. Boost converter is used to increase the voltage level. This boost converter is connected to the inverter, which is designed by using the MOSFET as a switch. In practical application the pulses for the inverter is given by using the Arduino control. By using this hybrid method, the total harmonics distortion is reduced to below the acceptable limit. Simulation for this proposed method is done by using the MATLAB simulink. Initially, fast fourier transform may found to mitigate harmonics. But emerging technologies like Arduino control is proved to simple and economical in carrying out the same task effectively.
Assessment of ICESat-2’s Horizontal Accuracy Using Precisely-Surveyed Terrains in McMurdo Dry Valleys, Antactica
Authors: Schenk Anton , Csatho Beata , Neumann Thomas
Published: June 2021

This paper presents an assessment of the horizon-tal accuracy and precision of the laser altimetry observations collected by NASA's ICESat-2 mission. We selected the terrain-matching method to determine the position of laser altimeter profiles within a precisely knownn surface, represented by a DEM. We took this classical approach a step further, approx-imated the DEM by planar surfaces and calculated the optimal position of the laser profile by minimizing the square sum of the elevation differences between reference DEMs and ICESat-2 profiles. We found the highly accurate DEMs of the McMurdo Dry Valleys, Antarctica, ideal for this research because of their stable landscape and rugged topography. We computed the 3D shift parameters of 379 different laser altimeter profiles along two reference ground tracks collected within the first two years of the mission. Analyzing these results revealed a total geolocation error (mean + 1 sigma) of 4.93 m for release 3 and 4.66 m for release 4 data. These numbers are the averages of the six beams, expressed as mean + 1 sigma and lie well within the mission requirement of 6.5 m.
Virtual Resistance Control for Sequential Green-start of Offshore Wind Power Plants
Authors: Jain Anubhav , Saborío-Romano Oscar , Sakamuri Jayachandra Naidu , Cutululis Nicolaos Antonio
Published: June 2021

The changing energy landscape due to the large scale integration of renewable energy and shutting down of conventional thermal plants has opened up the potential of alternate sources in the blackstart services market. Grid forming wind turbines can do controlled islanded operation independent of an external grid voltage and thus, participate in network restoration from the start. However, it is necessary to study the capability of wind turbines to deal with the demanding energization transients in a controlled and stable manner. This work investigates the feasibility of using virtual resistance in the wind turbine converter control to reduce transients during self-transformer inrush and sympathetic interaction from downstream string transformers. This can eliminate the need for pre-insertion resistors during sequential energization. The sensitivity of the AC current and voltage output along with DC link transient to the virtual resistance parameters has also been analyzed using PSCAD simulations. Finally the effectiveness of the proposed method for offshore network energization by a grid forming wind power plant has been tested by comparing to results for a pre-insertion resistor.
Detection and Localization of Terrestrial L Band RFI with GNSS Receivers
Authors: Roberts Max , Meehan Thomas K. , Straus Paul R. , Tien Jeffery Y. , Valant-Weiss Bonnie L. , Yizengaw Endawoke , Young Lawrence E.
Published: June 2021

GNSS signals are critically important for a wide range of commercial, military, and science applications. Recent studies have identified threats to the performance of GNSS from both intended and unintended sources of radio frequency interference (RFI). Understanding the distribution of the sources of RFI and the nature of the signals they are emitting is critical to determine and mitigate their effects on the measurements made by GNSS receivers. Terrestrial RFI can be substantially detrimental to the received GNSS signals, affecting the interpretation of related science measurements. NASA's Blackjack/TriG GNSS receivers are used for precise-orbit determination and radio occultation measurements, providing a data record spanning most of the Earth’s surface for nearly 20 years. We have developed a highly sensitive detection algorithm which uses variations in the measured signal to noise ratio (SNR), on the order of 10-50 seconds, common to all satellites to identify times and locations subject to RFI. Initial work has focused primarily on detection of the presence of RFI and using the receiver’s orbital solution to record the location of detection events. Our inter-mission analysis creates a unique record of global RFI with the potential for a) rigorous detection of the presence of interfering signals during science measurements, b) geolocation of RFI sources, and c) characterization of the nature of the transmitted signal to better identify intent. Preliminary analysis has shown the presence of RFI is well correlated with regional conflicts and other geopolitical activity.
An Analysis of Balinese Swearwords of English Private Course Students in Buleleng Regency
Authors: Wisudayanti Kadek Heni Oktarina
Published: June 2021

This study is intended to find out and analyze on the Balinese swearwords that often used by the English private course students in Buleleng in their daily conversation. Due to the problems discussed, the theories suggested in this research include language definition, sociolinguistics and swearwords definition. The method applied in this research is descriptive qualitative in nature and the data are from the English private course students in Buleleng. The subjects of this research are five English course students that originally came from Buleleng and they also lived in Buleleng. Then, the data analysis is performed to search the kinds of swearwords that they used, the reason of Buleleng people using the swearwords and also how often they speak the swearwords. This study use the swearwords classification according to types of swearwords which stated by Hughes (1998). This study finds the swearwords at several term included word related to religious (pirata), word related to sex (naskleng), word from excrement (tai and bangkaan), word from name of animal (cicing and bojog), and word from mental illness (lengeh,and buduh). Altough those words are dirty or rude to be said, but it often used by the Buleleng people even from the children until the adult. It will still like that for the next many years, because that is their culture herritage from many years ago.
EFL Pre-Service Teachers’ Perception Toward Process Approach in Teaching Writing At SMP Negeri 2 Banjar
Authors: Pradnyana I Ketut Putra , Dewi Ni Luh Putu Eka Sulistia , Agustini Dewa Ayu Eka
Published: June 2021

The current study was intended to identify the English Foreign Language (EFL) pre-service teachers’ perception toward process approach in teaching writing at SMP Negeri 2 Banjar. This study was a basic interpretative study. In collecting the data, this study used questionnaire and interview. The study was followed by 5 preservice teachers at SMP Negeri 2 Banjar. The data from the questionnaire were analyzed descriptively and the data from the interview were analyzed using O’Connor and Gibson’s guidance. The study found that the teachers have positive and very positive perception towards process approach in teaching writing. It was also found that during the implementation of process approach, the teachers were aware of several challenges encountered, namely the limitations of students in developing ideas, weaknesses of students in aspects of language and students requires times to finish writing. Discussions and suggestions are further presented.
Exploring Influence of Virtual Reality-Based English Learning Activities Towards Secondary Students’ English Writing Achievement
Authors: Sepang Kevin Marion , Santosa Made Hery , Suprianti Gusti Ayu Putu
Published: June 2021

The researcher conducted an experimental research of using Virtual Reality as instructional media in form of Virtual Reality-based activities especially in learning English in form of writing skill. This research had two purposes, namely (1) to determine whether there is an effect of Virtual Reality-based English learning activities towards students’ English learning achievement in a public secondary school in North Bali, (2) to find out how VR-based English learning activities affects students’ English learning achievement in form of writing achievement. The research design used in this study was explanatory sequential explanatory mixed methods design. The population was first grade students’ of a public secondary school in North Bali. The result of qualitative data analysis showed that there is an effect of Virtual Reality-based English learning activities towards 10th grade students’ English learning achievement in public secondary school in North Bali. The Effect Size of this quantitative research is in range on low effect size. The result of qualitative data showed that there were strengths and weaknesses of using VR-based English learning activities that affects the result of quantitative data of the students’ English learning achievement in a public secondary school in North Bali in form of writing skill.
Developing English Front Office Materials for Twelve Grade Students in First Semester at SMK N 2 Singaraja
Authors: Pratama I Gede Febry Wira , Wedanthi Nyoman Karina , Dewi Kadek Sintya , Budasi I Gede
Published: June 2021

The purpose of this study was to develop English front office materials for first semester students of class XII at SMK N 2 Singaraja. In the data collection process, researchers used six instruments, namely, Google form for teachers and students, Questionnaire for teachers and front office staff, Checklist for students, and the last instrument is Checklist for expert judges. This research method used the Design and Development (D&D) model. The results showed that there were 5 topics that needed to be developed, namely; Handling guest arrivals and departures, Handling guest baggage, Bell desk service handling requests, Individual guest check-in handling, Individual guest check-out handling. The conclusion obtained in this study is that there are 5 topics that must be developed into products and each topic contains input, content focus, language focus, and task and the product quality is classified as very good based on the results of two expert judges.

Keywords: D&D method, ESP, English for Front Office.
Developing English Front Office Materials for Eleventh Grade Students in Second Semester at SMK N 2 Singaraja
Authors: Wibawa I Gusti Putu Satria , Wedanthi Nyoman Karina , Dewi Kadek Sintya , Budasi I Gede
Published: June 2021

This study aims to develop English language materials of front office for second semester students of the eleventh grade at SMK N 2 Singaraja. This study adopts the Design and Development (D&D) which is guided by data collection through six instruments, namely questionnaires for teacher and front office staff, Google form for teachers and students, checklist for students, and checklist for expert judges. There are three stages that the researcher takes to complete this study, namely designing, developing, and evaluating the quality of the teaching materials (product) so that it can be categorized as a good material. The result is that there are four topics developed by the researcher, namely (1) Renewal of reservations, (2) Cancellation of reservations, (3) Handling of group reservations orally and in writing, and (4) Handling of individual reservations orally and in writing.
Use of Recycled Objects as English Teaching Media for Young Learners
Authors: Dewantari Fiorentina
Published: June 2021

This study is a library study about the use of recycled object as teaching media. The use of teaching media is one of the supporting components in teaching. Especially for young learners, the choice of media is an important thing to support them in learning English. Several media can be selected by teachers to be given to young learners. One of them is disposable media in the form of recycled objects that use objects around us. The teacher must be able to create the media to make the learning process more fun and informative. Through recycled objects as teaching media, young learners can learn how to use objects around them without having to use expensive media for learning. Therefore, this article was aimed at sharing the use of recycled objects as English teaching media for young learners. So that, young learners are expected to be motivated in the learning process.
Effectiveness of Project-Based Learning Models in Improving Students' Creativity (A Literature Review)
Authors: Cahyani Ni Ketut Cendy
Published: June 2021

The learning process on the 2013 curriculum uses a scientific approach that emphasizes students' activity in learning (student-centered learning). Learning that uses a scientific approach needs to be supported by the appropriate model and method. Project-based learning is one of the suggested learning models in the 2013 curriculum (K13). This learning model is designed to engage students in investigating real-world problems in their learning. Project-based learning drives teaching and learning, involves students in the learning process, motivates, and enhances the creativity of students. Hence, project-based learning is the appropriate learning model to improve students' creativity because it requires the students to be directly involved in their learning. Besides, students will also be more interested in learning because the problems used are related to their environment. Thus, the purpose of this paper is sharing the effectiveness of project-based learning model in improving students' creativity.
Effectiveness of YouTube as Learning Media in Improving Learners’ Speaking Skills
Authors: Kristiani Putu Enik , Pradnyadewi Diah Ayu Manik
Published: June 2021

In language learning, speaking becomes the evidence of students’ competence of the language that is learnt. However, students’ speaking ability can be inhibited by several problems that are faced such as lack of confidence, lack of vocabulary and grammar, and inappropriate teaching strategy. In this era, the developments of information and technology (IT) can be the solution of those problems. The development of technology seems to have many positive effects on education. Technology provides a variety of learning media that is fun for students. One of the technological developments that can be used as learning media is YouTube. YouTube provides various types of videos related to learning. In learning English, EFL learners can find various types of videos that can help the learning process. Therefore, YouTube can help learners to improve their language skill, especially their speaking skills. The aim of this paper is to explain the effectiveness of using YouTube as learning media in improving learner’s speaking skills
EXAMINING THE CONTEMPORANEOUS CAUSALITY BETWEEN CHINESE AND GHANAIAN STOCK MARKETS AMIDST THE COVID-19 PANDEMIC
Authors: Xunfa Lu  , Fredrick Oteng Agyeman  , Ma Zhiqiang  , Mingxing Li  , Agyemang Akwasi Sampene  , Adelaide Gyanwah Amadi
Published: June 2021

Examining the contemporaneous causality between Chinese and Ghanaian stock markets before and amidst the coronavirus disease 2019 (COVID-19) pandemic is of immense interest to many stakeholders in making effective and efficient decisions. This study investigates why the two stock markets’ fluctuations seem to move in tandem despite a broader economic phenomenon. Shanghai Stock Exchange and Ghanaian Stock Exchange composite indices data were used for this study spanning 2011-2020. The Granger causality and transfer entropy are applied to investigate the mean transmission. The Dynamic Conditional Correlation Generalized Autoregressive Conditional Heteroscedasticity (DCC-GARCH) model portrays the dynamic correlation and the ARMA model is used to fit the log-returns of the two indices. Results show that the Chinese stock market has a substantial causal effect on the Ghanaian stock market based on transfer entropy with the second order of lag while there is a considerable causality from the stock market of Ghana to the Chinese stock market through the third and fifth orders of lags. This implies the asynchronous return transmission between Chinese and Ghanaian stock markets. Moreover, the long term volatility connection significantly impacts the two markets, but the short-term volatility pattern does not heavily affect the markets based on the DCC-GARCH model. The best-fitted model for the log returns of two stock markets is ARMA (1,1). This study recommends that policymakers and investors adopt diversification as a resort to financial management.
The Community Health and Social Medicine Incubator: a service-learning framework for medical student-led projects
Authors: Nguyen David-Dan , Niburski Kacper , Cheng Brianna , Demir Koray , Dixon Andrew , Luo Owen D , De Meulemeester Julie , Nguyen Anne XL , Patterson David , Thomson Mathew , De Waal Anna , Singh Liz , Hendricks Kristin , Razack Saleem
Published: June 2021

Implication Statement

The Community Health and Social Medicine (CHASM) Incubator is a social impact venture that gives medical and other health care students the opportunity to develop initiatives that sustainably promote health equity for, and in partnership with, community partners and historically marginalized communities. Students learn how to develop projects with project management curricula, are paired with community health mentors, and are given seed micro-financing. As the first community health incubator driven by medical students, CHASM provides a framework for students interested in implementing sustainable solutions to local health disparities which extends the service-learning opportunities offered in existing curricula.
BUSINESS RISK ASSESSMENT METHODS
Authors:   Doctor of Economics, Professor, Plekhanov Russian University of Economics, Moscow, Russia, FILIN S. A. , FADEEVA N. A. ,   Master of the Faculty of Management, Plekhanov Russian University of Economics, Moscow, Russia
Published: June 2021

In this article, the subject of research is the methods of risk assessment in business as the main way to minimize risks when choosing a particular scenario for the development of events, as well as the difficulty in choosing a method for further analysis. The purpose of this article is to identify the most appropriate risk assessment method for a given situation and, accordingly, compare them and analyze the advantages and disadvantages of the methods under consideration. The article provides examples for specific situations of the most commonly used risk assessment methods in modern business. Recommendations for the most effective application of the analyzed methods are offered, depending on the goal of risk analysis and a specific situation. The results and conclusions are presented, corresponding to the set goal.
SOCIAL TECHNOLOGIES OF ENTERPRISE FINANCING
Authors:   Doctor of Technical Sciences, Head of the Department of “Finance”, Bauman Moscow State Technical University, Moscow, Russia University named after N. E. Bauman, Moscow, Russia, SOKOLOV E. V. , KOSTYRIN E. V. ,   Candidate of Economic Sciences, Associate Professor, Sub-faculty of Finance of Engineering Business and Management Faculty (EBM5), Bauman Moscow State Technical University, Moscow, Russia, BALANTSEV A. B. ,   Assistant of the Department IBM5 "Finance", Moscow State Technical University named after N. E. Bauman, Moscow, Russia
Published: June 2021

The proposed social technologies for financing enterprises, based on economic and mathematical models, algorithms and software, are a permanent mechanism for increasing the income of working citizens, developing enterprises, increasing tax revenues and social payments. The use of social technologies for financing enterprises allows with a 5% increase in revenue over 50 years to increase the wages of employees by 63%, which will amount to almost 104 trillion rubles in Russia; to increase deductions to the development fund by 72%, in which, first of all, the owners of enterprises are interested, since this ensures the growth of their income and the possibility of constant modernization and renewal of technological equipment, the release of new competitive products; to reduce to zero deductions to the Federal Fund of Compulsory Medical Insurance (FCHIF) from wages above 76 rubles, which is 955% higher than the average salary in Russia as of January 20. At the same time, despite the reduction in the rate of contributions to the FCHIF, the amount of deductions to the state in the form of income tax, income tax and in the FCHIF increases.
SCENARIOS FOR THE DEVELOPMENT OF SMALL BUSINESSES IN THE PROCESSING INDUSTRY OF STAVROPOL REGION
Authors:   Candidate of Economic Sciences, Associate Professor of Department of Entrepreneurship and the Global Economy, Stavropol State Agrarian University, Stavropol, Russia, VOROBYEVA N. V. , GRACHEVA D. O. ,   Candidate of Economic Sciences, Associate Professor of Department of Entrepreneurship and the Global Economy, Stavropol State Agrarian University, Stavropol, Russia, TELNOVA N. N. ,   Candidate of Economic Sciences, Associate Professor of Department of Entrepreneurship and the Global Economy, Stavropol State Agrarian University, Stavropol, Russia
Published: June 2021

The North Caucasian Federal District lags behind other administrative-territorial units of the country in the development of small businesses (low population density, the smallest territory, lack of access to the world ocean), as evidenced by the studied indicators, but it has regions with attractive market segments based on resources and specifics of local markets. In particular, in the Stavropol Territory, the top three industries include the manufacturing industry with a high share of trade turnover (2018% in 48,1). In this regard, this paper proposes three scenarios for the development of small business in the manufacturing industry: inertial, moderately optimistic and accelerated.
MANAGING THE COMPETITIVENESS OF BUSINESS STRUCTURES IN MODERN CONDITIONS
Authors:   Candidate of Economic Sciences, Associate Professor of the Department of Economics and Management, Stavropol Institute of Cooperation (branch), Belgorod University of Cooperation, Economics and Law, Stavropol, Russia, CHALOVA A. A. , BELOZEROVA I. A. ,   Candidate of Biological Sciences, Lecturer of the Department of Economic Disciplines, Stavropol Regional Multidisciplinary College, Stavropol, Russia
Published: June 2021

The article presents recommendations for managing the competitiveness of entrepreneurial structures in modern conditions.
FINANCIAL PROBLEMS OF SMALL BUSINESSES IN THE CONDITIONS OF PANDEMIC AND CRISIS
Authors:   Candidate of Economic Sciences, Associate Professor of the Department of Finance, Credit and Insurance, Stavropol State Agrarian University Stavropol, Russia, KLISHINA Yu. E. , UGLITSKIKH O. N. ,   Candidate of Economic Sciences, Associate Professor of the Department of Finance, Credit and Insurance, Stavropol State Agrarian University Stavropol, Russia
Published: June 2021

Small business is becoming increasingly important for the socio-economic development of a single state. The successful development of small business largely depends on the provision of small businesses with financial resources. The issue of state financial and credit support for small business is especially acute at the moment when the majority of entrepreneurs need funds not to maintain the growth and development of companies, but simply to survive. Quarantine measures to combat coronavirus infection have caused tremendous damage to the entire global economy, and small businesses are most vulnerable at the moment, since, due to their small size, they do not have a so-called airbag in case of a crisis. The article analyzes the impact of the coronavirus pandemic on the development of small businesses. It is shown that small business plays a significant role in the development of regions, however, for its further development, to smooth out the consequences of the pandemic and the crisis, it is necessary to create a system of effective state support.
DEVELOPMENT OF INTERACTIONS OF GOVERNMENT AND BUSINESS IN MODERN RUSSIA
Authors:   Candidate of Economic Sciences, Associate Professor of the Department of State and Municipal Administration and Law, Stavropol State Agrarian University, Stavropol, Russia, SHEVCHENKO E. A.
Published: June 2021

The article reveals the need to use the mechanisms of interaction between government and business structures, examines three stages of partnership in assessing the level of relations between government structures and the business community, as well as ways of mutually beneficial cooperation between state (municipal) management and entrepreneurship.
APPLICATION OF DIGITAL TWINS TECHNOLOGY IN THE ACTIVITIES OF INDUSTRIAL COMPANIES
Authors:   Candidate of Economic Sciences, Associate Professor of the Department of Finance, Credit and Insurance, Stavropol State Agrarian University Stavropol, Russia, GLOTOVA I. I. , TOMILINA E. P. ,   Candidate of Economic Sciences, Associate Professor of the Department of Finance, Credit and Insurance, Stavropol State Agrarian University Stavropol, Russia, MAKSIMOVA E. V. ,   Master of Finance and Credit, Credit Control Department Specialist, FES-Agro LLC, Stavropol, Russia
Published: June 2021

The article discusses the role of technology "digital twins" in the development of digital technologies. Analysis of the development of digital technologies reveals the relevance of the development and implementation of digital technologies in the company's business processes. The article analyzes the main modeling methods used to create digital twins. The features of the use of digital twins in the activities of industrial companies are revealed and the benefits for the company from their use are highlighted. It is noted that the use of the technology "digital twins" allows you to reduce the need for financial resources while minimizing the time spent. It has been established that the use of this technology in the activities of large Russian industrial companies will contribute to a significant increase in the efficiency of their activities and the development of the digital technologies market.
COMPARATIVE ANALYSIS OF INNOVATIVE TECHNOLOGIES DEVELOPMENT IN BANKS OF FEDERAL AND REGIONAL LEVEL
Authors:   Associate Professor of the Department of Account and Finance, Chelyabinsk State University, Chelyabinsk, Russia, STARODUBOVA N. N. , STARODUBOV I. I. ,   Undergraduate of the Department of Account and Finance, Chelyabinsk State University, Chelyabinsk, Russia
Published: June 2021

The article discusses innovative technologies in the activities of commercial banks. A comparative analysis of the development of FinTech in Russian banks of the federal and regional level is carried out, the key characteristics of the development of FinTech in the largest federal banks and regional credit institutions are highlighted. The main promising directions of FinTech development and the effect of its application in the banking business are presented.