bluuebunny/crossref_metadata_2025 huggingface dataset:
Uji Kompatibilitas Beauveria bassiana (Balsamo) Vuillemin dan Insektisida Nabati Ekstrak Daun Mimba Terhadap Larva Spodoptera exigua (Hubner)
Authors: Prastiwi Santi , Hartatik Sri
Published: November 2022

Penelitian ini bertujuan untuk menguji kompatibilitas antara cendawan entomopatogen Beauveria bassiana (BB) dan insektisida nabati ekstrak daun mimba (EDM) terhadap larva Spodoptera exigua yang ditinjau dari mortalitas dan nilai toksisitas. Penelitian ini terdiri dari pengujian tunggal BB dan EDM, serta pengujian kombinasi menggunakan Rancangan Acak Lengkap (RAL) 6 perlakuan 4 kali ulangan. Mortalitas larva S.exigua diamati hingga mencapai mortalitas ±90%. Data mortalitas larva diolah dengan analisis probit Finney (1971). Hasil Pengujian tunggal menunjukkan mortalitas perlakuan BB 0,2% dan EDM 5% pada 7 HSP adalah 79,17% dan 91,67%, sedangkan pada 8 HSP sebesar 89,58% dan 95,83%. Mortalitas pengujian kombinasi BB dengan EDM (1:10 w/w) 0,66% pada 7 HSP adalah 91,67%, sedangkan pada 8 HSP 97,92%. Nilai LC50 pengujian tunggal BB pada 7 HSP dan 8 HSP adalah 0,08% (0,06%-0,1%) dan 0,06% (0,05%-0,07%). Nilai LC50 pengujian tunggal EDM pada 7 HSP dan 8 HSP adalah 0,70% (0,54%-0,91%) dan 0,58% (0,45%-0,75%). Nilai LC50 perlakuan kombinasi BB dengan EDM pada 7 HSP dan 8 HSP adalah 0,07% (0,06%-0,10%) dan 0,05% (0,03%-0,06%). Nilai LT50 BB, EDM, dan kombinasinya pada konsentrasi tertinggi sampai konsentrasi terendah berturut-turut 5,20-12,50 hari; 4,68-9,41 hari; dan 4,65-8,28 hari. Kombinasi BB dengan EDM memiliki indeks kombinasi <0,5 yang membuktikan bahwa pengombinasian memberikan efek sinergistik atau kompatibel.

 

Kata Kunci: Kompatibilitas, Beauveria bassiana, Ekstrak daun mimba, Spodoptera exigua
PEMANFAATAN LIMBAH KULIT NANAS DAN ECENG GONDOK SEBAGAI PUPUK ORGANIK CAIR TERHADAP PERTUMBUHAN DAN HASIL TANAMAN KANGKUNG DARAT (Ipomoea reptans Poir.)
Authors: Rosita Hanifa Devi , Regar Arthur Frans Cesar
Published: November 2022

Limbah kulit nanas adalah limbah yang dihasilkan dari sisa pembuangan produksi buah nanas. Limbah kulit nanas mengandung nitrogen total sebanyak 0,88%. Unsur nitrogen ini nantinya akan membantu merangsang pertumbuhan pada tanaman terutama pada pertumbuhan vegetatif seperti pada daun tanaman. Eceng gondok merupakan salah satu gulma yang hidup dipermukaan air dengan cara mengapung. Populasinya akan meningkat 3% per hari ketika musim hujan tiba. Eceng gondok dapat digunakan sebagai POC karena eceng gondok segar mengandung C organik 21,23%, bahan organik 36,59%, P total 0,0011%, N total 0,28%, dan K total 0,016%. POC kulit nanas kombinasi eceng gondok nantinya akan di aplikasikan pada tanaman kangkung darat. Pembuatan POC kulit nanas kombinasi eceng gondok dibedakan pada perbedaan bahan POC. Perbedaan bahan POC dibedakan menjadi tiga yaitu kulit nanas, eceng gondok, serta kombinasi kulit nanas dan eceng gondok yang kemudian akan di fermentasi selama 30 hari. Variabel pengamatan pada penelitian ini yaitu tinggi tanaman, jumlah daun, panjang akar, berat basah (akar, tajuk dan total), dan berat kering (akar, tajuk dan total). Rancangan percobaan dilakukan dengan RAL dengan satu faktor yaitu perbedaan kombinasi bahan POC dengan 4 perlakuan dan masing-masing perlakuan diulang sebanyak 5 ulangan. Data hasil pengamatan selanjutnya akan dianalisis menggunakan Analisis Ragam Lanjutan, data hasil pengamatan dilakukan uji BNJ (Beda Nyata Jujur) pada taraf kepercayaan 95%. Penelitian POC ini diharapkan berpengaruh nyata terhadap respon pertumbuhan kangkung darat (Ipomea reptans Poir.). Berdasarkan hasil penelitian menunjukan bahwa pemberian dari ketiga jenis pupuk organik cair yang paling berpengaruh terhadap pertumbuhan dan hasil tanaman kangkung darat yaitu pupuk organik cair dengan bahan kulit nanas dan eceng gondok.

Kata Kunci : Kangkung Darat, Pupuk Organik Cair, Kulit Nanas, Eceng Gondok
PENGARUH INDUKSI MUTASI DENGAN MUTAGEN EMS (ETHYL METHANE SULFONATE) TERHADAP HASIL DAN KUALITAS KEDELAI HITAM (Glycine soja (L) Merrit)
Authors: Laksono Febrian Puji , Fanata Wahyu Indra Duwi
Published: November 2022

Tanaman kedelai merupakan salah satu jenis tanaman yang menjadi sektor perekonomian Indonesia di bidang pertanian. Permintaan kedelai di Indonesia terus meningkat tiap tahunnya bersamaan dengan peningkatan jumlah penduduk. Banyaknya permintaan akan tanaman kedelai belum dapat terpenuhi akibat rendahnya produktivitas tanaman kedelai tersebut. Penilitian ini bertujuan untuk mengetahui pengaruh konsentrasi mutagen EMS terhadap kualitas hasil produksi pada tanaman kedelai hitam. Manfaat dari penelitian ini adalah memperoleh informasi mengenai pengaruh konsentrasi mutagen EMS terhadap kualitas dan hasil produksi pada tanaman kedelai hitam. Penelitian ini menggunakan perlakuan yaitu konsentrasi EMS dengan lama perendaman benih selama 3 jam. Faktor konsentrasi EMS (P) dengan 4 taraf perlakuan: P0 : EMS dengan konsentrasi 0,00% (kontrol),P1 : EMS dengan konsentrasi 0,03%, P2 : EMS dengan konsentrasi 0,05%, P3 : EMS dengan konsentrasi 0,07%. Terdapat 4 perlakuan yang masing-masing perlakuan di ulang sebanyak 25 kali sehingga total satuan percobaan sebanyak 100 satuan percobaan dengan tiap polibag terdapat 1 tanaman. Hasil Penelitian selanjutnya dilakukan analisis data. Analisis data menggunakan metode analisis deskriptif kunatitatif. Data yang disajikan berupa data kuantitatif dan dideskripsikan menggunakan kata-kata.

Kata kunci: Tanaman Kedelai Hitam, Mutasi Tanaman, Ethyil Methane Sulfonate.
RESPON KERAGAAN DAN PRODUKTIVITAS TANAMAN CABAI BESAR (Capsicum annuum L.) TERHADAP KONSENTRASI LARUTAN SODIUM AZIDA
Authors: Sari Novita Indah Kartika , Fanata Wahyu Indra Duwi
Published: November 2022

ABSTRAK

Cabai besar merupakan salah satu tanaman hortikultura yang memiliki nilai ekonomi yang cukup tinggi di Indonesia. Harga cabai besar, sering kali mengalami kenaikan terutama pada saat hari hari besar. Salah satu yang dapat dilakukan untuk meningkatkan produktivitas cabai besar yaitu dengan menghasilkan kultivar baru yang unggul. Hal yang dapat dilakukan untuk menghasilkan kultivar baru yaitu dapat menggunakan perlakuan mutasi. Perlakuan mutasi yang digunakan dalam penelitian ini yaitu mutasi kimia dengan menggunakan larutan Sodium Azida (NaN3). Perlakuan mutasi Sodium Azida (NaN3) yang digunakan yaitu dengan konsentrasi 0,75mM dan konsentrasi 1,5mM. Penelitian ini dilakukan dengan tujuan untuk mendapatkan tanaman cabai besar (Capsicum annuum L) yang mampu berproduksi lebih tinggi dan untuk mempelajari pengaruh konsentrasi Sodium Azida terhadap keragaan dan produktivitas tanaman cabai besar (Capsicum annuum L). Manfaat dari penelitian ini yaitu untuk memberikan pengetahuan tambahan dibidang pertanian khususnya mengenai tanaman cabai besar yang diberi Sodium Azide, serta menjadi tambahan literatur bagi penelitian selanjutnya. Penelitian dilaksanakan di greenhouse Desa Lojajar Kecamatan Tenggarang Kabupaten Bondowoso. Bahan yang digunakan meliputi benih cabai varietas Astina, larutan sodium azide (SA). Metode penelitian yang digunakan yaitu menggunakan Rancangan Acak Lengkap (RAL) dengan 3 perlakuan dan 15 kali ulangan hingga terdapat 45 kombinasi perlakuan diantaranya kontrol, perlakuan sodium azide 0,75mM, dan perlakuan sodium azide 1,5mM lalu uji lanjut dengan menggunakan BNJ dengan taraf 5%. Hasil analisis ragam dapat diketahui bahwa sodium azide dengan perlakuan 0mM, 0,75mM, 1,5mM menunjukan bahwa perlakuan sodium azide 1,5mM dapat memberikan hasil terbaik dibandingan dengan perlakuan P0 (kontrol) dan perlakuan P1(Sodium azide 0,75mM) serta memberikan pengaruh positif terhadap jumlah cabang aktif yaitu sebesar 19 cabang, jumlah bunga sebesar 25 bunga, jumlah buah sebesar 20 buah  dan berat buah sebesar 155,73 gram per tanaman. Namun perlakuan P0 (kontrol), P1(0,75mM), P2 (1,5mM) tidak memberikan pengaruh nyata terhadap kandungan klorofil.

Kata Kunci : Cabai Besar, Mutasi Gen, Sodium Azide(ZA)
Pengaruh Cekaman Salinitas Terhadap Aktivitas Katalase dan Pertumbuhan Bibit Melinjo (Gnetum gnemon L.)
Authors: Pratama Reza Septyan , Siswoyo Tri Agus
Published: November 2022

ABSTRACTMelinjo plant (Gnetum gnemon L.) is one of the plants that has the potential to be developed, especially inthe tropics. Melinjo plants have a protein content of 9-10%. Reactive Oxygen Species (ROS) have increasedaccumulation in plant cells offset by increased antioxidants, which serve to protect against cell damage causedby osmotic pressure in plant tissue. Salinity stress can be induced through the application of Sodium Chloride(NaCl). This research was conducted to determine the response of growth and activity of the enzyme catalase(CAT) of melinjo seeds to the duration of NaCl application. The study was conducted from January tocompletion in the Green House and plant analysis laboratory at the Faculty of Agriculture, University of Jember.The experimental method used was the Completely Randomized Design (CRD) of NaCl application treatment of0, 5, 10, 15, and 20%. with a treatment duration of application of 45 days and repeated as many as 5 replications.NaCl application of 0 - 20% significantly affects plant growth, especially on plant height, root length, and wetweight parameters. When the condition of the plant experiences salinity stress, it affects the percentage of acidreduction 2,2'- Azinobis (3-ethylbenzatiazolin) - 6-sulfonate (ABTS) has the highest value in the P3 treatment of26.08%. The highest CAT antioxidant activity in P4 treatment was 1.02 units / mg protein.Keywords: NaCl, protein, antioxsidant, Gnetum gnemon L.ABSTRAKTanaman melinjo (Gnetum gnemon L.) merupakan salah satu tanaman yang berpotensi dikembangkankhususnya di daerah tropis. Tanaman melinjo mempunyai kandungan protein sebesar 9-10%. Reactive OxygenSpesies (ROS) mengalami peningkatan akumulasi didalam sel tanaman diimbangi dengan meningkatnyaantioksidan, yang berfungsi melindungi dari kerusakan sel akibat dari tekanan osmotik didalam jaringantanaman. Cekaman salinitas dapat diinduksikan melalui aplikasi Natrium Chlorida (NaCl). Penelitian inidilakukan untuk mengetahui respon pertumbuhan dan aktivitas enzim katalase (CAT) bibit melinjo terhadaplama aplikasi NaCl. Penelitian dilaksanakan pada bulan Januari sampai selesai di Green House dan laboratoriumanalisis tanaman Fakultas Pertanian Universitas Jember. Metode percobaan yang digunakan adalah RALperlakuan aplikasi NaCl 0%, 5%, 10%, 15%, dan 20% dengan perlakuan lama aplikasi 45 hari dan diulangsebanyak 5 ulangan. Lama aplikasi NaCl 0% - 20% berpengaruh nyata terhadap pertumbuhan tanamankhususnya pada parameter tinggi tanaman, panjang akar, berat basah tanaman. Pada saat kondisi tanamanmengalami stress salinitas mempengaruhi persentase peredaman Asam 2,2’- Azinobis (3-etilbenzatiazolin)- 6-sulfonat (ABTS) memiliki nilai tertinggi pada perlakuan P3 sebesar 26,08%. Aktivitas antioksidan CAT tertinggipada perlakuan P4 sebesar 1,02 unit/mg protein.Kata Kunci: NaCl, protein, antioksidan, melinjo
Clinical and biochemical status of patients with ulcerative collitis
Authors: Khalitova Yu. A. , Myakisheva Yu. V. , Katorkin S. E. , Andreev P. S. , Gromova D. S.
Published: November 2022

Inflammatory bowel disease (IBD), including ulcerative colitis (UC) and Crohn's disease (CD), are chronic inflammatory conditions of the gastrointestinal tract characterized by a relapsing and remitting course. Aim - to analyze clinical data and the most significant hematological and biochemical blood parameters used for diagnosis in patients with ulcerative colitis. Materials and methods. Between 2020 and 2021 examined 50 patients with the diagnosis "Ulcerative colitis" living in the Samara region. The diagnosis of ulcerative colitis was confirmed by a combination of clinical, radiological, endoscopic, and histopathological criteria generally accepted for inflammatory bowel diseases. A hematological blood test was performed on an automatic hematological analyzer Sysmex KX-21N, Japan, and a biochemical blood test was performed on an automatic biochemical analyzer Hitachi 902, Japan. Results. In the biochemical analysis of blood, an increase in the content of C-reactive protein in the blood is expected in 64% of patients. In 40% of patients, the concentration of total protein and electrolytes decreases. An increase in glucose levels was revealed in 44% of patients, in 10% of cases, a decrease in creatinine concentration, an increase in the activity of ALAT and ASAT was noted in 6 and 4% of cases, respectively. Reduced urea levels are noted in 6% of patients. Conclusion. As a result of the study, the data necessary for the diagnosis and monitoring of the effectiveness of the treatment of ulcerative colitis were obtained.
Linear polarization on radar cross section measurement for tank miniature
Authors: Praja Muhammad Panji , Pamungkas Wahyu
Published: November 2022

The use of radar technology, especially for the interests of state defense and security, has become the focus of development launched by the government of Indonesia. Equipment and vehicles in the defense and security sector are the top priority to be detected using radar technology. When a radar transmitter transmits its signal towards a target, some part of the signal will bounce in all directions or scattering, including to the receiver and some will be absorbed by the radar target. The radar target is assumed to have a small size, with the aim of focusing more on the beamwidth of the radar transmitting antenna to the target. This research has a focus on measuring radar targets in the form of defense equipment in the form of tanks made in miniature which are smaller than their original forms. The selected antenna polarization uses linear polarization with vertical and horizontal types. Each polarization will be compared with the value of the radar cross section (RCS) in the combination of the same polarization and different polarization. The measurement results show that the largest RCS value is obtained at an angle of 200° by 13 with a combination of Horizontal-Horizontal polarization and the smallest RCS value is obtained at an angle of 50° by -4 with a combination of Horizontal-Vertical polarization. With the results of these measurements, it can be concluded that the measurement of RCS for defense and security equipment can be carried out by measuring the miniature of the defense and security equipment
Performance improvement of the shredder machines using IoT-based overheating controller feature
Authors: Setyaningsih Emy , Hariyanto Satriawan Dini , Wahyuningtyas Dewi , Kristiana Samuel
Published: November 2022

Plastic shredding plays an essential role in the plastic waste recycling process. Plastic waste can be enumerated manually using a knife and scissors or a crushing machine. The use of a shredder machine to chop plastic waste, especially those whose primary drive is an electric motor, often experience problems. The main obstacle is the need for high power consumption (more than 1 HP) and the reliability of the drive elements against overheating. Overheating can damage the electrical circuit components that connect the power supply to electric motors, especially AC electric motors, causing a lot of loss in terms of performance and user safety. Internet of Things (IoT) technology is widely used to minimize energy resources by automating various systems. This study proposed the design of a shredder machine with a control system using IoT technology integrated with a shredder and conveyor machine designed using the Quantity Functional Diagram (QFD) method. The advantages of the shredder machine presented in this study are that it can operate at home using electric power, is more flexible, and minimizes overheating with an IoT-based overheating controller. This research succeeded in keeping the temperature of the electric motor of the shredder machine stable at a temperature of 40℃-55℃. The average delay of the IoT module to control on and off the shredder machine design system in this study is 219 ms and 200 ms, which are in the good category according to the Telecommunications and Internet Protocol Harmonization Over Network (TIPHON) standard.
Analysis and small-signal modeling of simplified cascade multiphase DC-DC buck converter
Authors: Prameswari Nungky
Published: November 2022

One of the power converters that are often implemented in renewable energy applications is a DC-DC power converter. One of such converters is a step-down converter or buck converter whose output voltage is lower than its input. A novel DC-DC buck converter for low output-voltage and high output current applications is presented in this paper. When compared to the conventional buck converter, the voltage ratio of the proposed topology is higher. The output of this converter also has lower ripple. Thus, the proposed topology is appropriate for renewable applications. The operating principle and small-signal model analysis are discussed in detailed. Finally, a simulation studies is carried out by PSIM to verify performances of the offered topology
Evaluations of the predistortion technique by neural network algorithm in MIMO-OFDM system using USRP
Authors: Gunawan M Wisnu , Priambodo Naufal Ammar , Gulo Melki Mario , Arifin Arifin , Moegiharto Yoedy , Briantoro Hendy
Published: November 2022

MIMO OFDM is the key technology of 4G network system. MIMO-OFDM system  enhances the spectrum efficiency and increases the capacity of the system. The implementation of USRP hardware to MIMO OFDM system has been attracted some researchers to conduct the experiments. So we conduct the experiments in a MIMO OFDM system that applies the predistortion technique.  In this experiment, we evaluate performances of the predistortion technique by using the artificial neural network.  USRP 2920 hardware which is supported by LabVIEW and Phyton software are used in this experiment. OFDM system uses 128 subcarriers to produce an OFDM symbol, and MIMO system uses 2 antennas at transmitter and receiver side. And no obstacles between Tx and Rx, or line of sight transmission scenarios. The performances of the predistortion technique using the artificial neural network algorithm are shown in symbol constellations or Error Vector Magnitude (EVM) at the receiver. And the texts or characters are used as the input of the system. From the experiment results can be seen that the distance between Tx and Rx affects the Error Vector Magnitude (EVM) and predistortion technique produces the Error vector magnitude (EVM) improvement. More shorter the distance between Tx and Rx can decrease distortions of the received signal,  At the transmitter side, the performance of predistortion technique is shown as the linearization improvement of  the non-linearity power amplifier. Therefore more wider the linear region of power amplifier results the decreasing in band distortion of transmitted signal, and can be seen as the Error Vector Magnitude (EVM) improvement.
Solar System-Like Systems with Special Reference to Relativistic Quantum Mechanics and Weak Gravitational Field
Authors: Gara Peter
Published: November 2022

This paper attempts to describe the large-scale (solar system-like, astronomical-scale) systems of the known world using the physical models and mathematical tools of relativistic quantum mechanics. The value of Hx can be introduced and approximated as an analogue of the constant ℏ. Based on the quantum mechanical approach, the proper time scale of the solar system can be determined.
Slip, Slop, Slap, Slide, Seek and Sport: A Systematic Scoping Review of Sun Protection in Sport in Australasia
Authors: Morton Sarah Kym , Harrison Simone Lee
Published: November 2022

Australia and New Zealand have the highest incidence of skin cancer. Sport is a fundamental part of Australasian culture, beginning in childhood, often with life-long participation. Participating in outdoor sports can contribute significantly to the lifetime ultraviolet radiation (UVR) dose individuals receive and their risk of developing skin cancer. This systematic scoping review explores the use of sun-protection by outdoor sporting participants in Australasia and considers how sun-protection practices may be better evaluated and improved in the community. A search of electronic databases using the search strategy “sun protection” AND “sport” AND “Australia” yielded 17 studies published in English from January 1992 to August 2021. Study methods included using UV-dosimeters to measure individual UVR-exposure; remote estimates of clothing-adjusted UVR-exposure; direct observation of sun-protection practices; and self-reported sun-exposure and sun-protection. Despite 40-years of ‘Slip Slop Slap’ campaigns in Australia, the use of sun-protection in most outdoor sports is inadequate. The paucity of comparable data limited our analyses, demonstrating a need for standardized, objective evaluation tools. Such tools, if used across a range of sports, should inform the development of workable recommendations that sporting clubs could implement and adopt into policy, thus empowering them to better protect the health of their participants.
On the Dynamic Interaction of Social Processes and COVID-19 Infection Dynamics
Authors: Nyabadza Farai , Mushanyu Josiah , Mbogo Rachel Waema , Muchatibaya Gift
Published: November 2022

Human behaviour was tipped as the mainstay in the control of further SARS-CoV-2 (COVID-19) spread especially after the lifting of restrictions by many countries. Countries in which restrictions were lifted soon after the first wave, had subsequent waves of the COVID-19 infections and it remains to be seen whether there will be more waves. In this paper, we formulate a deterministic model for COVID-19 incorporating dynamic non-pharmaceutical interventions, dubbed social dynamics. The model steady states are determined and their stability analysed. Numerical simulations are carried out to determine the pack of various parameters that influence the social dynamics. In South Africa, the first wave was the only wave in which the only interventions rested solely on human behavior. The model is thus fitted to COVID-19 data on the first wave in South Africa. The results presented in this paper have implications on the trajectory of the pandemic in the presence of changing social processes.
QED and Higgs-like Domain wall in Einstein-Cartan gravity
Authors: Andrade Luiz
Published: November 2022

Spacetime torsion is known to be highly suppressed at the end of inflation, called preheating. Of course this fact does not avoid that metric could affect the cosmic dynamos at preheating phase as was showed by Bassett et al, in the general relativity (GR) case. In this paper, is to show that a torsionful magnetogenesis in QED effective lagrangean, drives either a torsion damping or an amplification mechanism or dynamo effect, depending upon torsion chirality. The present extension of Basset et al theory yields a new magnetic field expression $B\sim{a^{(1\pm{\beta})}}$, obtained from dynamo equation in QED. Here a cosmic factor ${\beta}=g_{T}{\eta}k$ is present. In a second example we find Higgs inlationary fields in Einstein-Cartan gravity thick domain walls (DWs). Recently a moodified Einstein-Cartan gravity was given by M Shaposhnikov et al [PRL (2020)] to obtain higgs like inflatons as a portal to dark energy.
Hybrid Membrane Technology for Acids Recovery from Wastewater of the Coated Steel Wire Production: A Pilot Scale Study
Authors: Loza Sergey , Loza Natalia , Korzhov Alexander , Romanyuk Nazar , Kovalchuk Nikita , Melnikov Stanislav
Published: November 2022

In the present study, the problem of the sulfuric acid recycling from spent copper plating solution was solved using a hybrid membrane technology, including diffusion dialysis and electrodialysis. A real solution from the production of copper-coated steel wire, containing 1.45 mol/L of sulfuric acid, 0.67 mol/L of ferrous sulfate and 0.176 mol/L of copper sulfate was processed. Diffusion dialysis with anion-exchange membranes was used to separate sulfuric acid and salts of heavy metals. Then purified dilute sulfuric acid was concentrated by electrodialysis. Energy consumption for sulfuric acid electrodialysis concentration at a current density of 400 A/m2 was 162 W·h/mol with current efficiency 16 %. After processing according to the hybrid membrane scheme, the solution contained 1.13 mol/L sulfuric acid, 0.077 mol/L ferrous sulfate and 0.022 mol/L copper sulfate. The resulting acid solution with a small amount of ferrous sulfate and copper sulfate met the established requirements for a copper plating bath solution and can be reused in production.
A Graph Neural Network-based Video Recommendation Model Combining Users’ Long-term and Short-term Preference
Authors: brook mildred , Rohlf David , Bishop Andrea , Jones Matt
Published: November 2022

With the rapid development of technology and the advancement of Internet technology, various social networking platforms are gradually coming into people's view and occupying a higher and higher position. In the recommendation scenario, the user-item interaction naturally forms a bipartite heterogeneous graph structure and with the development of graph embedding and graph neural network technologies based on deep learning to process graph domain information, the combination of graph information and recommendation systems shows strong research potential and application prospects. The methodological improvement of the recommendation algorithm based on collaborative filtering takes advantage of the nature that user-items can form a bipartite graph in the recommendation scenario. The existing methods still have some shortcomings. The methods that only use weights or convolutional recurrent neural networks to implicitly model different historical behaviors lack explicit modeling of video switching relationships in serialized behaviors. The user's interest is changing all the time, so it is not possible to recommend based on the user's history, and it is necessary to consider both the long-term and short-term interest of the user according to the video content in order to achieve accurate recommendation of short videos. In this paper, we design a recommendation model based on graph neural network, which models users' long-term and short-term interests by two vector propagation methods, respectively.
Thrombodynamics Test in Assessing the Risk of Thrombus Formation in Patients with Atrial Fibrillation Taking Direct Oral Anticoagulants
Authors: Gebekova Z. A. , Ivanov I. I. , Asambayeva A. , Skripka A. I. , Sokolova A. A. , Napalkov D. A. , Vuimo T. A.
Published: November 2022

Aim. To evaluate thrombus characteristics in patients with atrial fibrillation (AF) taking different direct oral anticoagulants (DOACs) using Thrombodynamics test.Materials and methods. Thrombodynamics test was performed in 100 patients with paroxysmal and permanent forms of AF taking different DOACs, dose choice was done in accordance with the instructions for drugs use. For analysis samples of fresh citrated platelet-free plasma were taken just before regular DOACs dose intake (trough concentration). Statistical data processing was carried out using R software packages.Results. All patients had no history of thrombosis or bleeding before inclusion in this study. All parameters of Thrombodynamics test taken at residual concentration of DOACs were in general within reference values, that is in the area of normal coagulation: spatial clot growth rate (V) – 26.56 (25.0; 29.2) μm/min, the time to the start of clot growth (Tlag) – 1.05 (0.85; 1.27) min, initial spatial clot growth rate (Vi) – 44.3±7.7 μm/min, stationary spatial clot growth rate (Vst) – 26.5 (24.9; 28.4) μm/min, clot size (CS) – 999.7 (912.9; 1084.7) μm, clot density (D) – 22883.1±3199.9 arb. units. D was appeared to be higher in women [22947.7 (21477.5; 22947.7) vs men [22124.8 (19722.8; 22124.8), p=0.035] and Tlag was significantly higher in patients with chronic heart failure [1.2 (1.0; 1.2) vs 1.0 (0.8; 1.0), p=0.008]. A correlation was found between level of creatinine and Tlag parameter, glomerular filtration rate (GFR) and clot density. With an increase in the level of creatinine in the blood and a decrease in GFR, respectively, there was an increase in Tlag parameter (p-value 0.038); with an increase in GFR, clot density decrease (p-value 0.005).

Conclusion. All parameters of Thrombodynamics test on residual concentration of DOACs were within reference values that indicated optimal anticoagulant effect of all DOACs. The obtained data of normal coagulation at the residual concentration of the anticoagulant are consistent with the previously obtained data on the safety and effectiveness of DOACs using other methods. Further studies with clinical end points are needed to assess the clinical value of this method.
Comparative Pharmacoepidemiological Assessment of Antihypertensive Drugs Administration Structure in Pregnant Women in Routine Medical Practice in Kursk and Chisinau
Authors: Povetkin S. V. , Gikavyj V. I. , Bachinski N. G. , Levashova O. V. , Kornilov A. A. , Podgurski L. A. , Tsurkan L. M.
Published: November 2022

Aim. To study the structure of antihypertensive drugs prescription in pregnant women in routine practice in Kursk and Chisinau.Material and methods. The study design was observational descriptive cross-sectional. Authors conducted a survey of doctors in medical organizations in Kursk and Chisinau in 2017-2018.Results. Respondents from Kursk and Chisinau preferred methyldopa in prescriptions of central alpha-adrenergic receptor agonists. Doctors from Chisinau used clonidine in 14.3% of cases. The leading place in the group of calcium channel blockers belonged to short-acting nifedipine. Among beta-blockers in Kursk, doctors most often prescribed bisoprolol (43.3%), metoprolol (21.7%) and nebivolol (13.3%), while in Chisinau the preference was given to metoprolol (32.1%), atenolol (19.6%) and bisoprolol (16.1%). From the group of diuretics, Kursk doctors mainly prescribed hydrochlorothiazide (10%), indapamide (6.7%); in Chisinau, indapamide was the leader (19.6%), hydrochlorothiazide was used less frequently (7,1%). From the class of alpha-blockers, prazosin occupied the leading position among respondents in Kursk, and terazosin in Chisinau.Conclusion. The priority drug classes in both regions were calcium channel blockers, central alpha-adrenergic receptor agonists and beta-blockers. A small number of not recommended drugs prescriptions have been registered. In general, the prescribed treatment corresponded to the current guidelines and protocols for the management of patients with arterial hypertension during pregnancy.
How Technology Affects Behavioral Intention (Case Study of Online Transportation in Indonesia and Thailand)
Authors: Munandar Jono M , Munthe Ribka Cynthia F
Published: November 2022

"Research Aims: Using two countries as the object, this study aims to analyze the influence of technology readiness towards favorableness on online transportation consumers in Indonesia and Thailand. Design/methodology/approach: Empirical evidence for the research was derived from a survey that collected data from 500 students in Indonesia and Thailand, analyzed using Logit Biner method with the help of software SPSS. Research Findings: The result of this study shows that there were two hypotheses accepted, H1 (optimism influences favorableness) and H3 (insecurity has an effect on favorableness), while other hypotheses (H2 and H4) are not significant. Theoretical Contribution/Originality: This study analyzes the influence of technology readiness to favorableness in two countries in South East Asia, Indonesia and Thailand, focusing on online transportation. Managerial Implication in the South East Asian context: The result can be useful for online transportation companies in South East Asian Research limitation & implications: This study was limited by subject and sample"
Trust in Supervisor as a Mediator of the Relationship Between Perceived Interactional Fairness in Reward Systems and Organizational Commitment
Authors: Abdin Fatmawati , Ismail Azman , Nor Azmawaty Mohamad
Published: November 2022

"Research Aims - This study was undertaken to extend existing literature by examining the mediating effect of trust in supervisors in the relationship between perceived interactional fairness in reward systems and organizational commitment. Design/methodology/approach - The SmartPLS method was applied to analyze the survey questionnaire data collected from employees at a national audit department in Malaysia. Research Findings - The results reveal that the effect of perceived interactional fairness in reward systems on organizational commitment is mediated by trust in supervisors. Theoretical Contribution/Originality - This study has proved the effectiveness of perceived interactional fairness as an essential mediating variable in the administration of reward systems. Managerial Implication in the South East Asian context - The findings of this study could help superiors in public organizations to encourage and support their supervisors in implementing good treatment styles for enhancing fairness in making pay decisions and interacting with diverse subordinates. If employees trust their supervisors, it may enhance the effect of employees’ perceived fairness of reward systems on organizational commitment in public organizations in Southeast Asia. Research limitation & implications - This study is limited by its sample, self-report questionnaire scale, and exclusion of several important demographic variables (e.g., gender, age, education, position, and duration of service) in the research model."
Employee Rhetorical Sensitivity as a Mediator in the Relationship Between Customer Orientation and Customer Retention
Authors: Mokhtaruddin Suraya Akmar , Che Wel Che Aniza , Khalid Nor Rahimy
Published: November 2022

"Research Aims: The current study proposes to fill in the gap in customer orientation literature by focusing on the relationship between customer orientation, employee rhetorical sensitivity and customer retention from the customer perspective. Design/methodology/approach: The questionnaires were distributed at the KLIA and KLIA2 among experienced customer of travel agency, where the respondents were selected using convenience sampling. Research Findings: The finding indicates that customer orientation and employee rhetorical sensitivity has positively influence customer retention. Additionally, employee rhetorical sensitivity partially mediates the relationship between customer orientation and customer retention. Theoretical Contribution/Originality: Academically, this study contributes to the literature of customer orientation and rhetorical sensitivity. Managerial Implication in the South East Asian context: Practically, it will lead to better understanding of customer orientation as well as employee rhetorical sensitivity in enhancing travel agency’s services in Malaysia and South East Asian Country. Research limitation & implications: This study only focuses on customer orientation and employee rhetorical sensitivity as a predictor of customer orientation. It also employs a cross-sectional research design, which only measures the phenomenon once."
Perceived Severity of Halal Violation: CSR and Consumer Boycott
Authors: Omar Nor Asiah , Nazri Muhamad Azrin , Zainol Zuraidah , Ali Mohd Helmi , Alam Syed Shah
Published: November 2022

"Research Aims: The halal industry has become one of the fastest growing business in the global market. Halal certification provides assurance to all Muslim consumers because it fulfills the Shariah law and follows the concept of halalan-toyyiban. The purpose of this research is to examine the effect of severity of halal violation and CSR on boycott towards the company that involved in halal violation incidents. Design/methodology/approach: In total of 400 questionnaires were distributed amongst customers who were aware and/or had experienced the violation of a halal product. Data were analyzed using structural equation modelling techniques, were partial least squares (PLS) software was used to measure the direct and indirect relationships between the variables. Research Findings: The result of this investigation showed that perceived severity of halal violation is significantly related to consumer boycott. Further results imply that perceived CSR not only contributes negatively to consumer boycott, but also significantly moderates the relationship perceived severity and consumer boycott. Theoretical Contribution/Originality: This study is among the earliest to include CSR from a consumer perspective, particularly in the halal retraction context. Managerial Implication in the South East Asian context: The present study suggests that Halal companies in South East Asian should be proactive in CSR initiatives in order to reduce the negative effect towards company evaluation such as boycott in case if halal violation incidents occur. Research limitation & implications: This study bears several limitations. First, this study employed purposive sampling method and the scope of the study is only limited to the customers who are aware and/or had experienced food halal violation incidents in Klang Valley, Malaysia. Hence, the results may not be able to generalise to other product categories and population."
The Influence of Japanese Work Cultures on Malaysian Foodservice Employees' Work Stress and Their Turnover Intention
Authors: Kamal Mohd Fairuz Mustaffa , Mohd Zahari Mohd Salehuddin , Hanafiah Mohd Hafiz , Ariffin Nurul Wahidah Mohammad
Published: November 2022

"Research Aims - This study investigates the influence of Japanese work cultures on Malaysian foodservice employees’ work stress and their turnover intention. Design/methodology/approach - A total of 381 respondents participated in this study, and the research data was validated prior to the empirical assessment. Research Findings - The results of this study signify that the Japanese work culture amplifies workers disorientation, stress and turnover intention. Besides, thru hierarchical regression, workplace stress was found to mediate the relationship between Japanese work culture and employee turnover intention. Theoretical Contribution/Originality - The study reveals the conflicts between the South East Asian employees and the Japanese management culture in the foodservice industry. Managerial Implication in the South East Asian context - This study contributes to the organisational and human resource management literature by examining the direct and indirect effects of Japanese work culture on employees’ workplace stress and their turnover intention in the context of the restaurant industry. Research limitation & implications - As for the study limitation, the current study does not cover all Japanese restaurant in Malaysia as the researchers focus on the Klang Valley setting."
Night-Market Traders Are They Entrepreneurial or Just Making Ends Meet?
Authors: Isa Azwardi Md , Azman Noor Azura , Sukri Nur Syazwani Aisyah Ahmad
Published: November 2022

"Research Aims - Night-market is a popular type of micro-business in Southeast Asia. The purpose of this research is to examine night markets from the perspective of business development, a perspective that has received limited attention from the literature. Design/methodology/approach - A total of 300 questionnaires were distributed amongst nightmarket business owners in a selected venue around Penang. Data were analyzed using SEM-PLS to measure the variables proposed in the study. Research Findings - The results of this study showed that commitment and business experience is significantly related to business development while government assistance yields no relationship. The age of the business owner has a significant moderating impact on the effect of commitment and business experience on business development and, again, no impact on the effect of government assistance. Theoretical Contribution/Originality - This study argues that the presumption that all microbusinesses have an entrepreneurial character should be treated with skepticism. It is important to differentiate between being entrepreneurship and making end meets. Managerial Implication in the South East Asian context - Managerial Implication in the Southeast Asian Context: The present study suggests that operating a night-market business and passing it down from generation to generation while at the same time aiming for it to grow bigger is unrealistic. Research limitation & implications - This study has several limitations. First, due to time and geographical constraints, the sample size was limited to 300, and the data were collected only in Penang. Secondly, the study did not consider whether the business owners (night-market traders) were first generation owners, second generation, or beyond."
Building A Theoretical Research Model for Trust Development: The Case of Mobile Financial Services in Myanmar
Authors: Tun Phyo Min
Published: November 2022

"Research Aims - This research study focuses on the factors affecting customer trust in mobile financial services (MFS) in Myanmar by developing a research model that incorporates six different factors: perceived usefulness, perceived ease of use, social pressure, enabling conditions, service quality, and satisfaction. Design/Methodology/Approach - Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) were employed to analyse the data. Subsequently, Structural Equation Modeling (SEM) was utilised to examine hypotheses. An analysis was performed on the survey data collected from 250 mobile phone users who are likely to use or currently using MFS in Myanmar. Research Findings - The results indicate that trust in MFS is significantly influenced by enabling conditions, service quality and satisfaction. The study also found that perceived usefulness, perceived ease of use and social pressure have statistically insignificant effects on trust-building in the MFS context. Theoretical Contribution/Originality - A finalised trust-development theoretical research model was formulated and proposed for utilisation in the investigation of customers’ trust in future research within a similar context. Managerial Implication in the South East Asian Context - The findings of this study are beneficial and valuable for Mobile Financial Services Providers (MFSP) in the ASEAN countries, enabling them to create suitable marketing strategies, business approaches and service infrastructures regarding their customers, thereby developing customer trust. Research Limitations and Implications - The conclusion is limited to the mobile financial services sector in Myanmar, and the opinions of non-adopters and rejectors are excluded."
Agricultural industry in West Papua Province: An analysis of backward and forward linkages
Authors: Girik Allo Albertus , Maspaitella Marcus R , Parinusa Sisilia Maria , Mayawati Deasi
Published: November 2022

Agriculture, Forestry and Fisheries Sector in West Papua Province contributes significantly to the Gross Regional Domestic Product (GRDP). While on the employment side, this sector also able to absorb a third of the workforce in this province. It indicates the important role of this sector in the economy of West Papua Province. The purpose of this paper is to determine the magnitude of the forward and backward linkage of agricultural industry in West Papua Province. The combination of forward and backward linkage will produce a key industry. The Inter-Regional Input Output (IRIO) model and 2016 IRIO data was used in this study. The findings show that Food Crops Agriculture; Annual Horticultural Crops, Annual Horticulture, others; and Livestock is included in the undeveloped category. Meanwhile, Seasonal and Annual Plantations, Forestry and Logging Industries, and Fisheries are in growing industries category. Gross value-added multiplier of all agricultural industries is below one where the highest value is in the Forestry and Logging Industry whereas Livestock Industry is the lowest.
PRESUPPOSITION AND OTHERING IN A DYSTOPIAN NOVEL RED RISING
Authors: Leonandho Muhammad Adam Akbar , Ariyanti, S.S., M.Pd. Lisetyo , Setiawan, M.A., Ph.D. Prof. Slamet , Hartanti, S.Pd., M.EIL Lina Purwaning
Published: November 2022

The researcher has analyzed the concept of Colonialism Discourse in a dystopian novel titled Red Rising using qualitative method to gather the data. Othering is used to explain the colonialism discourse in the novel. The researcher used Focault (1990) theory to describe how othering happened in the novel’s background story. Beside othering, presupposition is also used to gather the data. For the presupposition, the researcher used Yule (1996) theory which has six types of presupposition. The purpose of this research is how Othering which is part of colonialism discourse could happened in a dystopian novel which is a new genre in this modern era. By using presupposition to understand the othering concept in the novel, this research focused on the meaning of the utterances using the types of presupposition and how those presupposed meaning can give the pragmatics function in the concept of Othering. The researcher found that presupposed meaning of the utterances could help to determine the othering expression based on the context in the story. The researcher found that the most used presupposition is existential because it contains adjective pronouns to emphasize the characters’ thoughts or feeling to the readers. Other types of presupposition are existed in the story being viewed as the way the characters showed their identity as an individual in the society. As a dystopian novel which has some elements of colonialism discourse, Red Rising often uses humiliation to mock or underestimate other colors society. The researcher found that the othering expression used in this novel depicts the concept of colonialism literature about the oppressing leader in one social hierarchy. The totalitarian leader has created label to identify each individual with their own position and authority to gain easy access to control everything in the social system. In a word, othering has its own role in the colonized society by showing how the system of social hierarchy works in the story.
Study on Fatigue Behavior of S135 Steel and Titanium Alloy Drillpipes: Experiment and Modeling
Authors: Peng Xianbo , Yu Hao , Lian Zhanghua , Liu Tao , Shi Junlin , Yang Dongchuan
Published: November 2022

This paper studies the fatigue failure behavior of S135 steel and titanium alloy drillpipe, tries to reveal the mechanism of fatigue fracture, and evaluates the degree of fatigue damage. First, the chemical composition, tensile test, and microstructure analysis of two types of pipes were carried out, and the difference in microstructure affects its macroscopic fatigue performance. Second, the stress vs. fatigue life (S-N) curve equation and fatigue limit of S135 steel and titanium alloy drillpipes in air and mud were obtained through the fatigue test. The equations of the S-N curves in air are NS135−air=9.45×1037(S+1776)−9.3 and NTi−air=1.41×1028(S+1124)−6.7, while in mud, they are NS135−mud=6.68×1034(S+551)−9.6and NTi−mud=5.74×1032(S+973)−8.3. Scanning electron microscope analysis results show that the S135 steel drillpipe presents brittle fracture, while titanium alloy drillpipe presents mixed fracture of quasi-cleavage and dimple. Finally, a case study of actual horizontal well was carried out to evaluate the fatigue damage of two drillpipes; compared with conventional steel drillpipe, titanium alloy drillpipe can effectively resist fatigue damage in the drilling fluid environment. The fatigue test results and corrosion fatigue mechanism analysis in this paper can provide data and theoretical guidance for the study of drillpipe fatigue life.
Using RBF-based artificial neural network to optimization of betulinic acid ester enzymatic synthesis
Authors: Hosseinpour Alireza , Poorsargol Mahdiye
Published: November 2022

Modeling of reaction conditions in the enzymatic synthesis of betulinic acid ester with multi-layer perceptron (MLP) which is a class of feed forward artificial neural network (ANN) has been done. Error to test data depends on not only trained method but also number of neuron in hidden layer. Often, it is much more of error to training data. In this manuscript Radial Basis Function (RBF) has been utilized. It determines the number of neuron due to desired error. In appropriate ANN, error for training data and test data are close. Therefore RBF’s parameters are set by multi objective meta-heuristic algorithm, in a way that, mentioned purposes have been obtained. The results of this method will be compared with previous methods.