bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengembangan Video Dokumenter Berbasis Local Content Alat Musik Tradisional Pada Materi Gelombang Bunyi
Authors: Mustofa Hisbulloh Als , Gunawan Gunawan , Kosim Kosim , Sutrio Sutrio
Published: August 2022

Changes in the learning system during the COVID-19 pandemic require innovation in learning, innovation in the development of video learning media can be a solution, including documentary videos. The documentary video itself is one of the learning media that contains events and phenomena of everyday life that are close to students. Integrating documentary videos with the local content of traditional musical instruments to explain sound wave material can significantly assist students in understanding the material. This study aims to develop a local-based documentary video content of traditional musical instruments on sound waves. This study uses the Research and Development method with a 4D model (Define, Design, Develop, and Disseminate) developed by Thiagarajan by making documentary videos through the pre-production, production, and post-production processes. The development process started from the draft of the learning video and was revised twice based on suggestions and input from 3 expert validators and 3 practitioner validators then a commentary through suggestions from respondents. Then the documentary video was obtained as the final learning media with a validity percentage of 93% based on expert judgment and 89% based on respondent's assessment. So it can be said that a final documentary video has been produced which is very feasible for use in learning.
Maneuverability of a vessel using bow thrusters
Authors: Emediong Christopher Umana  , Joseph Justine Maurice  , Prof. E.A. Ogbonnaya  , Udoh Mmenyene Michael
Published: August 2022

Vessels entering and leaving ports are faced with the challenge of maneuvering due to weather conditions, bad currents, and traffic dues to congestion in the channels near coastal waters. In order to berth or manoeuver properly the use of tugs is necessary which incurs more cost and more turnaround time for the vessel owner. Over the years, bow thrusters have been introduced to aid easy maneuverability despite these conditions in order to eliminate the cost of hiring tugs as well as reduce turnaround time for the vessels. In this project, a 4-blade bow thruster propeller of 500mm diameter was successfully modelled using Solidworks 2021 (CAD) software. Computational flow dynamics (CFD) was done using flow simulation in Solidworks 2021 and 260 iterations was carried out. The velocity at the body of the propeller was found to be 13.67m/s while the velocities at the front and back of the propeller was 6.841m/s. The values for the performance factors were also gotten for a varying range of BT propeller diameters and charts were develop to show the relationship between the propeller diameter and the performance factors necessary for maneuvering a vessel. It can be concluded that the performance factors necessary for maneuvering a vessel is dependent on the diameter of the bow thruster. For further studies, number of thruster to be fitted to the bow or stern of a vessel should be considered for larger vessel sizes.
Methicillin-Resistant Staphylococcus aureus (MRSA): A major concern in the Northern Cameroon
Authors: Bouba Gaké  , Aline Bamia  , Mansour Mohamadou  , Nelly Michelle Tapindji  , Calixte Didier Mbakop  , Marie Chantal Ngonde Essome  , Dieudonné Adiogo  , Marie Claire Okomo Assoumou
Published: August 2022

Staphylococcus aureus remains the most virulent pathogenic staphylococcal species known to human beings. Oxacillin is still the best antibiotic used for treating infections with S. aureus. However, cases of resistance are increasingly recorded and cause a serious public health concern. The objective of this study was to evaluate the resistance of S. aureus to oxacillin. The study was carried out in the North region of Cameroon on strains isolated at Centre Pasteur in Cameroon. Three hundred (300) strains of Staphylococcus were recorded, among them 200 (66.67%) were identified as Staphylococcus aureus, mainly coming from six (06) different types of samples. The susceptibility test to oxacillin was carried out using two methods: the diffusion method using discs (oxacillin, cefoxitin) and the determination of Minimum Inhibition Concentration (MIC) by E-test. Overall 84 (42%) resistant strains were detected by both methods. Cervico-vaginal specimen harbored the highest number of S. aureus strains (41%), compared to other specimen types. However, pus recorded the highest number of resistant cases (79%), followed by semen culture (50%). Among all resistant strains recorded, 84.5% were tested positive for beta-lactamase production.
Studies of meteorological elements in the River Basin Uruçuí Preto - PI, Brazil
Authors: Raimundo Mainar de Medeiros  , Romildo Morant de Holanda  , Moacyr Cunha Filho  , José Eduardo Silva  , Manoel Vieira de França  , Luciano Marcelo Fallé Saboya  , Wagner Rodolfo de Araújo
Published: August 2022

The goal is to show the variability of meteorological elements in the catchment area of the river Uruçuí Preto - PI (BHRUP), aimed at contributing to sustainable development in the productive areas of agriculture, grain, fruit growing, fishing, laser and hydrology. Weather elements studied are temperature (maximum, minimum and average) air, and their maximum and minimum fluctuations, temperature range, relative humidity, wind (direction and intensity), total insolation, cloud cover, evaporation, evapotranspiration, rainfall. The data discussed are the series of 1960-1990, acquired by the Northeast Development Superintendency and the Company for Technical Assistance and Rural Extension of Piauí State. The maximum annual air temperature is 32.1 °C, annual minimum is 20 °C and the average annual temperature of 26.1 °C. We used climate classification according Köppen systems, which are distinguished two climatic types in the River basin Uruçuí Preto - PI, Aw, tropical hot and humid, with rains in summer and dry in winter; Bsh, hot semi-arid, with summer rains and dry winter. The variation of the temperature range is from 11.9 to 14.9 °C. The average relative humidity of the air is 47-79%, the average annual rainfall is 937.7 mm, it was observed that the annual march of relative humidity accompanies the annual distribution of rainfall because precipitation is the process of supply of natural sources of water vapor and moisture. The total area of Sunstroke BHRUP ranges between 2520 to 2750 hours. The annual evaporation ranges 100-226 mm and the annual evapotranspiration fluctuates between 1160-1600 mm, the intensity of the annual wind with the following highlights in the area of ​​small wind intensity in the far south and in the central and northern part of the southern region found if higher intensities, moderate winds in the northern sector of the central region and in every area of the northern region. The annual cloud cover ranges from 0.4 to 0.6 tenths.
Phytoplankton community of the Isaka-Bundu waterway in Rivers State, Nigeria; A polluted tidal mangrove wetland
Authors: Davies Ibienebo Chris  , Evelyn Godwin Amaewhule
Published: August 2022

This study aimed to investigate the composition, abundance, distribution, and diversity of the phytoplankton community of the Isaka-Bundu waterway in Rivers state, which is a polluted tidal mangrove wetland. Phytoplankton was collected bimonthly from July to December 2021 at high tide from four stations according to APHA methods. The species diversity was calculated using standard indices. The total composition of 334 individual phytoplankton was identified in the 3 stations and control. The total composition of 220 species from 5 Phylum was recorded. This observed decrease in the species diversity and richness could also be attributed to changes in environmental variables due to pollution resulting from industrial effluent discharge into the river which has adversely affected the aquatic biota. Based on these activities, there is an urgent need to carry out a regular study on the phytoplankton community that supports its fisheries in this aquatic environment. The results of this study indicate the characteristic species and compositions of phytoplankton in the Isaka-Bundu waterway in Rivers state. The species abundance and distribution are a confirmation while the composition, and diversity gave an insight into the adverse effect of these cumulative activities. The result showed that the Isaka-Bundu waterway had been extremely polluted.
The possibility of using permanent magnets without rare earth elements in electric motors
Authors: Маiorov A. A. , Safin A. R.
Published: August 2022

THE PURPOSE. The use of rare earth permanent magnets in electric motors has become commonplace. The use of rare earth magnets in electric motors, such as neodymium (NdFeB), gives a significant increase in the characteristics of the electric motor. The prices of permanent magnet motors made of rare earth elements are highly dependent on the prices of magnets. So in 2012, prices for rare earth magnets increased sharply, which in turn led to a sharp increase in the cost of electric motors. The difficult situation in the world, as well as a possible new price hike for rare earth magnets, is worrying. Therefore, alternatives to rare earth permanent magnets should be considered. The aim of the study is to study and compare various alternatives to rare earth permanent magnets. Compare different types of electric motors. METHODS. When solving the tasks set, a comparative analysis of magnets made of various materials was carried out, which could replace neodymium magnets, which are most often used in electric motors. A comparison of different types of electric motors was also made. RESULTS. The article describes the relevance of the topic under consideration. The problems associated with the use of rare earth magnets are considered. Alternative options for rare-earth magnets, which are used in electric motors, are considered. Various types of electric motors are considered, the pros and cons of various types of electric motors are given. CONCLUSION. The article describes the reasons why it is necessary to abandon the use of rare earth magnets in electric motors (the most common neodymium magnets). The negative aspects of the use of rare earth magnets in electric motors are described. Alternative applications of rare-earth magnets in electric motors are described. This describes the possibility of restoring rare earth magnets, as well as the possibility of using various materials to create permanent magnets. After studying the problems with the use of rare earth magnets in electric motors, they came to the conclusion that it is necessary to consider various options for electric motors that would use magnets without the use of rare earth elements. Or consider different types of electric motors that do not use permanent magnets. So to replace the widely used neodymium magnets, ferrite magnets can come.
Spectral analysis of mechanical and chemical defects by the parameters of the wattmetrogram of drawer drive pumping unit in the process of operation
Authors: Manakhov V. A. , Tsvetkov A. N.
Published: August 2022

TARGET. The purpose of this work is to develop a method for diagnosing the equipment of sucker-rod pumping units (SRPU) during operation by spectral analysis of the wattmetergram array signal. A wattmetering module is used as a measuring element, the developed software in the MatLab software package serves as a signal processing tool. The amplitude spectra of the object under study, constructed from an array of wattmetrograms by fast Fourier transform, in the MatLab software environment, are used to analyze the technical condition of the SRPU.METHODS. The method of wattmetering and spectral analysis of the signal of wattmetergram arrays makes it possible to control the SRPU during its operation under voltage. This control method is characterized by high accuracy, sensitivity to damage formation and allows the use of computer technologies for signal processing and analysis in order to diagnose devices. RESULTS. The method of spectral analysis is fully disclosed. The concept of spectrum and its construction is considered. The method of wattmetry is disclosed, as well as the principle of operation and the main characteristics of the wattmetry sensor. The removal and evaluation of experimental data from the operating SRPU during its operation was carried out. A wattmetrogram is constructed and a spectrum is constructed from the signal data array. The wattmetrogram of the SRPU with complicated working conditions, in which foaming was observed, showed a jump in the electrical load at the upper point of the balancer position. Spectral analysis showed an increase in amplitudes at certain frequencies, which may indicate the presence of oil foaming in the pump cylinder.CONCLUSION. This method of spectral analysis of the wattmetrogram signal with the help of the MatLab program makes it possible to identify mechanical and chemical defects of the SRPU according to the amplitude-frequency characteristics of the wattmetrogram parameters.
Shunt power factor correction devices for damping of harmonic resonance in industrial power systems
Authors: Dovgun V. P. , Egorov D. E. , Novikov V. V. , Sinjagovsky A. F.
Published: August 2022

THE PURPOSE. Harmonic resonance has become a serious problem of shunt capacitor banks for reactive power and voltage support. Effective solution to damp out the capacitor-caused resonance is the series connection of capacitor bank with harmonic damping network. This paper presents a general design method for shunt capacitive compensating units with damping networks. The damping unit is designed in such a way that it provides harmonic filtering and adequate damping of the transient oscillations. METHODS. The method was developed for designing damping network in the form of ladder LC-two-port. The design is based on minimization of voltage total harmonic distortion (VTHD) in the point of common coupling. Normalized element parameters of the different order damping networks have been determined. RESULTS. Comparative study of transient behavior of shunt capacitive compensating units with damping networks illustrate the effectiveness of the propose structure. It has been observed that there is a significant reduction of transient overvoltage in switching of capacitor bank with damping network. CONCLUSION. This paper presents a new design method for capacitive compensating units with damping networks for industrial power systems with powerful nonlinear loads. The paper illustrates superior performance characteristics of proposed shunt capacitive compensating units by computer simulations.
Monte Carlo method at the 24 game and its application for mathematics education
Authors: Fitrianawati Meita , Aliansyah Zulhaj , Peni Nur Robiah Nofikusumawati , Farid Imam Wahyudi , Hakim Lukman
Published: August 2022

Students often find mathematics a challenging subject and turn it into a scourge for them. Game-based learning, such as “24-card game”, help engage students in a self-paced and fun learning process and thus may overcome students’ math anxiety and promote mental math skills. This research aims to examine how the 24-card game works using the Monte Carlo method and the possibility to overcome students' mathematics anxiety. The meta-analysis method was used to explain Monte Carlo’s simulation to solve the solution for all possible combinations of cards in the game and respectively assign difficulty levels. The student's proficiency level was evaluated based on the divergence value in the number of guesses required to solve the dealt combination at 87% to show full proficiency. The evaluation could also show the math difficulty of advanced operations, such as fractions and grouping games. This game is more efficient in developing students' mental math skills compared to a conventional and rigidly structured classroom lecture.
DESAIN INVERS DECOUPLING PADA SISTEM MIMO 3×3 DENGAN PENGENDALI PID
Authors: Azizah Zahrotul
Published: August 2022

The processes in the industry are categorized into a multi-input multi-output (MIMO) system, which consists of many inputs and outputs where the variables in the process are interrelated with each other. The interaction causes the controller design to be difficult. Even very strong interactions can worsen the performance of the controller. One way to reduce interaction is to add decoupling to the control system. There are several kinds of decoupling, but inverse decoupling was chosen because it can reduce the interaction significantly. This study aims to add inverse decoupling to the MIMO system with a larger size, namely 3×3. Larger system sizes lead to more complicated decoupling calculations. PID controller and inverse decoupling scheme became the chosen control strategy. Shell Heavy Oil Fractionator (SHOF) by Garcia is used as an illustrative example of a 3×3 MIMO system to demonstrate the performance results against the proposed control scheme. Based on the simulation results, the IAE value with the addition of inverse decoupling is smaller than without decoupling.Keywords: inverted decoupling, MIMO 3×3, PID controller
PREDICTION ANALYSIS OF FOULING MODEL ON HEAT EXCHANGER IN THE CRUDE OIL REFINERY
Authors: Huda Hairul , Renanto Renanto , Biyanto Totok Ruki , Fathoni Rif'an , Larasati Tantra Diwa
Published: August 2022

Fouling mainly occurs in the oil industry. Fouling is an unwanted deposit in HE (heat exchanger). Reliable fouling models are scarce, although empirical and theoretical models have been proposed to describe fouling in heat exchangers. The general models of empirical fouling used are linear, falling rate, and asymptotic. The research methodology begins with the acquisition and use of operational fouling data, which is then followed by the use of an asymptotic fouling model and ends with calculating the thickness of fouling in all HE. The object of this research study is all HE in the crude oil refinery HEN (heat exchanger network). The aim of this research is to use the asymptotic fouling model and get the fouling thickness. The fouling resistance from time to time increases, but in the end, it tends to be stationary, where for the final value, the highest fouling resistance is in HE-10, namely 14.8E-03 (m2°C/W), and the lowest value is fouling resistance at HE- 01 is 1.27E-03 (m2°C/W). The thickness of HE fouling in asymptotic conditions indicates that HE undergoes the same deposition process as suppression.Keywords: fouling, heat exchanger, asymptotic, crude oil refinery, heat exchanger network
Sistem Penentuan Kelayakan Kredit Pemilikan Rumah Non-Subsidi Menggunakan Metode Weight Product
Authors: Sari Renny Puspita , Novitasari Lita
Published: August 2022

Rumah adalah kebutuhan dasar yang digunakan untuk tempat tinggal manusia. Semakin tahun penduduk Indonesia semakin tinggi, sama halnya dengan tempat tinggal manusia. Kredit Pemilikan Rumah merupakan mekanisme dalam membeli rumah yang dibayar dengan angsuran sampai waktu yang telah ditentukan. Oleh karena itu, untuk mendukung penyeleksian dalam penentuan kelayakan calon pembeli dibutuhkan sistem pendukung keputusan sebagai alat pendukung praktis untuk meningkatkan pengambilan keputusan. Sistem ini dibangun menggunakan metode Weight Product (WP). Metode WP adalah cara membuat peringkat alternatif dalam urutan preferensi. Hasil penelitian terhadap sistem pendukung keputusan diharapkan dapat membantu memilih calon pembeli yang tepat. Output sistem akan menampilkan perangkingan kelayakan atau tidaknya suatu alternatif.
Pengembangan Media Pembelajaran IPS Di Sekolah Menengah Pertama
Authors: Mewengkang Alfrina , Palilingan Verry Ronny , Tetiwar Gifens Melisa
Published: August 2022

Tujuan penelitian ini adalah untuk mengembangkan sebuah media pembelajaran dengan memanfaatkan teknologi mobile dalam penggunaanya yaitu aplikasi pembelajaran IPS di Sekolah Menengah Pertama yang bisa membantu peserta didik dalam kegiatan pembelajaran baik di sekolah maupun di rumah. Metode penelitian yang digunakan adalah Multimedia Development Life Cycle (MDLC) yang terdiri dari enam tahap, yaitu Concept (pengonsepan), Design (Perancangan), Material Collecting (Pengumpulan Bahan), Assembly (Pembuatan), Testing (pengujian), dan Distribution (pendistribusian). Media pembelajaran dibuat berdasarkan konsep-konsep yang telah dirancang dan diuji dengan teknik black box testing menghasilkan hasil yang baik sehingga aplikasi ini layak digunakan dalam proses pembelajaran baik di dalam kelas maupun di luar kelas.
Sistem Informasi Penjualan Barang Toko Al-Vape Store Sangasanga Berbasis Web
Authors: Hatta Heliza Rahmania , Al Fiqri Muhammad Ridho , Cahyadi Dedy
Published: August 2022

Toko Al-Vape Store Sangasanga merupakan tempat usaha yang bergerak dibidang usaha penjualan barang perlengkapan vape, dimana dalam proses penjualannya selama ini masih menggunakan sistem manual dengan datang ketoko. Jaman digital seperti ini sudah maraknya penjualan secara online baik melalui media sosial maupun melalui website, tujuan penelitian adalah membangun sistem untuk manajemen data barang dan proses transaksi secara online berdasarkan aturan toko. Dari hasil penelitian ini, diharapkan dapat membuat kinerja pegawai menjadi lebih efektif dan efisien, selain itu dapat menambahkan pendapatan dalam penjualan barang bagi toko karena dengan adanya sistem baru pelanggan dari luar daerah dapat melakukan pembelian barang tanpa harus datang jauh-jauh.
Rancang Bangun Aplikasi Hafalan Al-Quran dengan Google Speech API Berbasis Android
Authors: Assisi Mu’nisah , Septiarini Anindita , Kridalaksana Awang Harsa , Wati Masna
Published: August 2022

Pembelajaran menghafal Al-Quran saat ini kebanyakan dilakukan dengan tatap muka di mana murid melafalkan hafalannya dan guru menyimak serta memberi tahu jika ada bacaan yang salah. Penelitian ini bertujuan untuk membantu user dalam menghafal Al-Quran yang dapat diakses secara mobile menggunakan teknologi speech recognition dengan cara memberi penilaian terhadap hafalan user. Pemrosesan suara menjadi teks menggunakan Google Speech API. Penggunaan data dalam penelitian ini yaitu  Surah Al-Bayyinah, Al-Maun, Al-Lahab dan Al-Ikhlas. Hasil penelitian ini dibagi menjadi tiga bagian yakni black box, usability dan akurasi untuk pengujian tambahan. Hasil pengujian black box menunjukkan bahwa seluruh kebutuhan fungsional telah sesuai. Pada pengujian usability diperoleh hasil skor System Usability Scale (SUS) sebesar 83. Pada pengujian akurasi diperoleh persentase akurasi terbesar sebesar 92% pada kondisi ruangan tanpa noise dan jarak sumber suara dengan perangkat 5cm.
The Design and Simulation of Adaptive Cruise Control System
Authors: KABASAKAL Buğra , ÜÇÜNCÜ Murat
Published: August 2022

In this study, an Adaptive Cruise Control system is designed by using conventional Proportional Integral Controller (PID) and Model Predictive Controller (MPC). In the design, vehicle, acceleration, and deceleration models are constructed in a way to sim-ulate the real-life environment. The design and simulation were carried out through Matlab and Simulink. In order to investigate the effects of gains in the PID controller, several values for Kp, Ki, and Kd is tested. The simulation results illustrated that the gains Kp and Kd have negligible effects on the vehicle acceleration but the gain Ki has a substantial effect on the response of the ego car. The results of PID controller were compared with the results when the controller is replaced by MPC. It has been shown that the PID controller gives better results as compared to the MPC controller inde-pendent from Kp, Ki, and Kd values. Therefore, we can confidently state that the PID controller provides better responses in addition to its accessibility, simpler design, and cost advantages compared to the MPC controller.
Dysfunction of Cytotoxic T Lymphocyte Induced by Hepatoma Cells through the Gln-GLS2-Endoplasmic Reticulum Stress Pathway
Authors: Wang Wei , Guo Mengnan , Bai Zekun , Bai Wen , Chen Weixi , Su Yali , Wu Jinghua
Published: August 2022

Background: Metabolic activities of tumor cells lead to a depletion of nutrients within the tumor microenvironment, which results in the dysfunction of infiltrating T cells. Here, we explored how glutamine (gln) metabolism, which is essential for biosynthesis and cellular function, can affect the functions of cytotoxic T lymphocytes (CTLs). Methods: Activated CTLs were co-cultured with hepatoma cells. Western blot was used to analyze changes of proteins and ELISA was used to analyze changes of effector. RNA-sequencing was used to detect differentially expressed genes in CTLs. The status of the endoplasmic reticulum (ER) was investigated using transmission electron microscopy experiments. Results: Co-culturing CTLs and hepatoma cells revealed that CTLL-2 cells in the co-culture group expressed high levels of PD-1 (Programmed cell death protein 1), TIM-3 (T cell immunoglobulin and mucin domain-containing protein-3), GRP78 (Glucose regulated protein 78), and P-PERK (phosphorylated protein kinase RNA-activated-like endoplasmic reticulum kinase) and secreted low levels of Granzyme B and perforin. Additionally, the substructure of the ER was severely damaged. When CTLs were treated with an inhibitor of ER stress, their functions were restored. Next, complete medium without Gln was used to culture cells, causing CTLs to display dysfunction and ER stress. WB results revealed decreased expression levels of GLS2 and SLC1A5 (Solute carrier family 1 member 5) in CTLs in the co-culture group. Subsequently, glutaminase (GLS) inhibitors were added to the cultures. As expected, CTLs treated with a GLS2 inhibitor had increased protein content of PD-1 and TIM-3, decreased secretion of Granzyme B and perforin, and an enhanced ER stress response. Conclusions: In summary, CTLs are functionally downregulated induced by hepatoma cells through the Gln-GLS2-ERS pathway.
The Value of Optical Coherence Tomography Angiography in Pituitary Adenomas
Authors: Tang Yang , Liang Xiaofang , Xu Jing , Wang Kaiyue , Jia Wang
Published: August 2022

Objective: This study aims to explore the value of retinal vessel density (VD) in diagnosing optic nerve injuries in patients with pituitary adenomas using optical coherence tomography angiography (OCTA). Methods: In this cross-sectional retrospective study, 100 patients with pituitary adenomas and 71 participants for normal controls, who visited the Beijing Tiantan Hospital from January 2019 to May 2021, were enrolled. The OCTA was used to measure retinal thickness and VD, and the correlation of these parameters with visual field (VF) factors was analyzed. Receiver operating characteristic curves were used to compare the value of the above parameters in diagnosing VF abnormalities in the patients with pituitary adenomas; the differences in retinal VD between 41 patients with pituitary adenomas who had normal retinal thicknesses and 41 patients in the normal control group with no statistical differences in gender and age were compared. Results: The radial peripapillary capillary (RPC) density, superficial retinal capillary plexus (SRCP) density, retinal nerve fiber layer thickness, and ganglion cell layer complex thickness correlated with VF parameters (p < 0.05). The RPC density in the temporal quadrant had the highest capability in diagnosing VF abnormalities, with an area under the curve = 0.821, p < 0.001, with 72.3% sensitivity and 82.7% specificity. The mean RPC density and RPC density in the nasal and temporal quadrants in the 41 patients with pituitary adenomas who had normal retinal thicknesses were reduced compared with the normal control group (49.95% ± 1.86% vs. 51.30% ± 1.87%, p = 0.002; 49.09% ± 3.13% vs. 50.41% ± 3.90%, p = 0.034; 54.33% ± 3.14% vs. 55.89% ± 3.08%, p = 0.020) and other parameters had no statistical differences compared with the normal control group. Conclusions: The density of the RPC and SRCP may also be sensitive and specific indicators of VF damage in patients with pituitary adenomas. Measuring retinal VD in patients with pituitary adenomas may be a supplement to help identify VF impairments. In addition, abnormal retinal vascular density may indicate VF impairment in patients who are unable to cooperate with VF examinations.
Spatial and Frequency Specific Artifact Reduction in Optically Pumped Magnetometer Recordings
Authors: Xiang Jing , Tong Han , Jiang Yang , Barnes-Davis Maria E.
Published: August 2022

Background: Magnetoencephalography (MEG) based on optically pumped magnetometers (OPMs) opens up new opportunities for brain research. However, OPM recordings are associated with artifacts. We describe a new artifact reduction method, frequency specific signal space classification (FSSSC), to improve the signal-to-noise ratio of OPM recordings. Methods: FSSSC was based on time-frequency analysis and signal space classification (SSC). SSC was accomplished by computing the orthogonality of the brain signal and artifact. A dipole phantom was used to determine if the method could remove artifacts and improve accuracy of source localization. Auditory evoked magnetic fields (AEFs) from human subjects were used to assess the usefulness of artifact reduction in the study of brain function because bilateral AEFs have proven a good benchmark for testing new methods. OPM data from empty room recordings were used to estimate magnetic artifacts. The effectiveness of FSSSC was assessed in waveforms, spectrograms, and covariance domains. Results: MEG recordings from phantom tests show that FSSSC can remove artifacts, normalize waveforms, and significantly improve source localization accuracy. MEG signals from human subjects show that FSSC can reveal auditory evoked magnetic responses overshadowed and distorted by artifacts. The present study demonstrates FSSSC is effective at removing artifacts in OPM recordings. This can facilitate the analyses of waveforms, spectrograms, and covariance. The accuracy of source localization of OPM recordings can be significantly improved by FSSSC. Conclusions: Brain responses distorted by artifacts can be restored. The results of the present study strongly support that artifact reduction is very important in order for OPMs to become a viable alternative to conventional MEG.
Turist Rehberlerinin Rehberlik Mesleğine Bakışı (A View of The Tour Guides to The Profession of Tour Guide in Turkey)
Authors: Yazıcıoğlu İrfan , Tokmak Cüneyt , UZUN Serdar
Published: August 2022

Turist rehberliği, Turizm sektörünü, ekonomilerinin gelişiminde önemli bir gelir kaynağı olarak gören ülkeler için hayati öneme sahip mesleklerdendir. Turist rehberleri turistlerle belirli bir süre zarfında birebir iletişimde bulunduklarından, onların turizm destinasyonlarından tatmin olmalarında etkin rol oynamaktadırlar. Turist rehberliği mesleğinin gereğince yerine getirilmesi, ülkenin turizm pazarından alacağı payı artıracak, böylece ülke ekonomisinin gelişimine olumlu katkıda bulunulacaktır. Bu araştırmada, Türk turizminin gelişmesinde önemli katkıda bulunan ve sayıları yaklaşık 9000’i bulan turist rehberlerinin (www.turkishguides.org) kendi meslekleri ile ilgili sorunları, görüşleri, yaşadıkları problemlerle ilgili değerlendirmelerini ortaya koymak, böylece karar alıcılara veri sağlamak amaçlanmıştır. Tesadüfî örneklem yöntemiyle seçilen 240 rehberle yüz yüze görüşülerek anket formları doldurulmuştur. Elde edilen veriler SPSS paket programında analiz edilmiştir. Ortaya çıkan sonuçlara göre Türkiye’deki rehberlerin sorunları ve nedenleri değerlendirilmiştir. The tour guide is a vital profession for the countries that see tourism as an important income source for their economic development. The tour guides get communication with tourist in certain period in tour. Therefore they play effective role over their satisfaction from tourism destinations. Tourism destination get quite important portion from tourism market and in this way its economic development is effected positively, if the profession of tour guide is work effectively. In this study, it is aimed to define the Professional problems of tour guides and to provide information to the decision makers. The selection Casual sample method was used. 240 tour guides selected to study. The questionnaires were applied to respondents by interviewing face to face. The gathered information was analyzed in SPSS pocket program. The profession problems of tour guide evaluated according to the results of the analyzing.
Boosting Students Motivation in Learning through the Use of Social Media Applications
Authors: Marzuki Abdul Gafur , Santiana Santiana
Published: August 2022

The results of the data indicated students’ preference with using WhatsApp to communicate and Instagram to make friends, to network with friends and to be able to learn additional knowledge at their own time and at their preferred place. They like to text, send files and videos via the WhatsApp and Instagram postings with the information and knowledge that extend beyond the boundaries of the textbook and the classroom.
The mindsponge & BMF analytics project
Authors: Mindsponge AISDL
Published: August 2022

This website is built by the creators of the mindsponge conceptual framework, the bayesvl R package, and the BMF analytical approach to innovative thinking in humanities and social sciences research. The aforementioned elements—now constituting the so-called SM3D knowledge management system—have helped us and other colleagues develop numerous primitive thoughts into serious research problems, perform qualitative and quantitative studies, and lead to quality publications (as well as citations to them, later on). This will become clear when you browse through articles on the site. It is noteworthy that the resources help achieve the results without huge investments in costly datasets, expensive computing systems, and time-consuming long meetings. Therefore, we trust that sharing the SM3D will give a shot in the arm to many Early Career Researchers (ECR), especially those living and working in the developing world. All the basic resources required to perform research are provided for free.
Factorials, Integers, Binomial Coefficient and Factorial Theorem
Authors: Annamalai Chinnaraji
Published: August 2022

This paper presents a factorial theorem using factorial functions, integers, and binomial coefficients. This idea will help to researchers working in combinatorics, computation, science and engineering.
A Comparative Assessment of Murder Counts Pre, During and Post-COVID-19 Restriction In Trinidad And Tobago (working paper)
Authors: Smith Troy Emilio
Published: August 2022

Stringency measures associated with governmental responses to COVID-19 have reportedly had varying effects on crime. As countries worldwide continue to remove restrictions there is concern related to post-COVID-19 restriction crime patterns. This study specifically examines the change in murder counts in Trinidad and Tobago pre, during and post-COVID-19 restrictions. Tie series analysis was used to assess non-linear trends and seasonality, while Date Time Warping was used to assess similarity between time periods. The results suggest that murder counts did decrease substantial during COVI-19 with 2020 having the lowest average murder count in a 8 year period. However, murder count have return to pre-COVID-19 levels in 2022, with all restrictions having been left in November 2021. It was concluded that while the exogenous shock caused by COVID-19 did decrease murders the effect was temporary. The removal of the treatment led to a return to the previous state of murders.
The ALMOST-Based Operational Method of Progressive Movement for Madura Folk Arts and Halal Tourism Village Development
Authors: Saksono Suryo Tri
Published: August 2022

The purpose is to find the best formula related toThe ALMOST (Alternative Movement Solidarity)-Based Operational Method of ProgressiveMovement. This research started by getting datafrom stakeholders. The Researcher interviewedMadura arts stakeholders. All information isincluded in the tables to ease observation andevaluation. Information obtained through interviewstransformed into a coherent narrative. This methodhas 4 elements called GOALs (Goal, Organizer,Authority, and Local society) and 4 stages,including Challenge, Collaboration, Consensus, andCampaign (4C). This method is handed over to theorganizer to be implemented for Madura folk artsand halal tourist village development.
NEUROPLASTICITY IN DEPRESSION: A NARRATIVE REVIEW WITH EVIDENCE-BASED INSIGHTS
Authors: Petra  , Mudgal Shiv Kumar , Nath Santanu , Chaturvedi Jitender , Sharma Suresh Kumar , Joshi Jaydeep
Published: August 2022

Major Depressive Disorder (MDD) is one of the leading causes of disability worldwide. The current pharmacological treatmentoptions for MDD, which rely on the mono-amine hypothesis, has their limitations with respect to treatment non-response, partialresponse etc. This propels for a search for a novel neurobiological understanding of MDD that can lead to novel treatment options.A literature search strategy was thus employed using relevant keywords pertaining to the topic in PubMed, Embase and GoogleScholar. Systematic reviews and meta-analyses, narrative reviews and clinical trials were reviewed to incorporate the most robustevidence-based literature available. A total of 37 publications were narrowed down based upon the topic. Alterations in brainneuroplasticity, as evidenced by changes in neurotrophic factors and from neuroimaging, has been found to be a strong pathomechanismfor MDD. This link has been exploited to stimulate psychopharmacological research to treat MDD.
Rừng và cuộc sống
Authors: Khuc Quy Van
Published: August 2022

Dưới lăng kính của nguyên lý bán dẫn giá trị kinh tế môi trường, hệ quản trị tri thức SM3D [8], chúng tôi nhận ra rằng chừng nào văn hóa khai thác, văn hóa hưởng thụ lấn át văn hóa kiến tạo, văn hóa giá trị cao [9,10], thì môi sinh sẽ tiếp tục bị suy thoái và hủy hoại. Ở tầm quốc gia, điều này đặt ra thách thức cho ngành văn hóa, giáo dục trong việc xây dựng và ươm mầm văn hóa môi trường (để bảo vệ và cải thiện môi trường) cho các thế hệ công dân tương lai của chúng ta.
INTEGRATING LMS CANVAS IN EFL CLASSROOM
Authors: Marzuki Abdul Gafur , Santiana Santiana
Published: August 2022

teaching and learning proces during and post-pandemic covid-19, Covid-19 pandemic has changed our life in many aspects, one of them is the impact on education. The presence of covid-19 hinders teaching and learning activities, which are usually carried out in a direct meeting/f2f. However, this pandemic can accelerate the learning system is done remotely by utilizing technology. The covid-19 became a significant catalyst for spurred education. Such as encouraging more use of technology in virtual learning activities. However, there are significant challenges in implementing the virtual learning model. One of them, teachers/academicians is not accustomed to using learning systems that are entirely online. Difficulties arise because they have not used equipment for virtual learning models. Therefore, additional support and mentoring are needed to adapt to this new learning model.
Transformation Of Accounting Education In The 4.0 Era, A must Or Not ?
Authors: Marzuki Abdul Gafur , Ulfah Almira Keumala
Published: August 2022

An accountant must be aware of the development of the industrial revolution 4.0 by looking at the opportunities that exist. In the accounting sector, Fluent in technology is one of the keys to facing challenges in the Industrial Revolution 4.0. How do accountants respond to the Industrial Revolution 4.0? Accountants need to do the following five things: 1) invest in developing digital skills, 2) implement prototypes of new technologies, while learning by doing, 3) education based on international certification and digital skills, 4) responsive to changes in the industry, business and technological development, 5) curriculum and learning based on human-digital skills.
Does problem definition similarity predict collaboration in a college access coalition? An exponential random graph model
Authors: Lawlor Jennifer
Published: August 2022

Community coalitions are vehicles for generating local level change around issues of education, healthcare, and community development. They often operate as coordinating bodies to support local stakeholders in sharing information, making decisions, and taking action around common problems. To date, there has been little research exploring the diversity of ways each stakeholder within a coalition defines the central problem for the group. Homophily theory suggests that individuals with similar definitions would be more likely to collaborate with others who have a similar problem definition. In this study, I address the question: Are coalition members more likely to collaborate with others who have similar problem definitions? To answer this question, I partnered with a coalition focused on postsecondary attainment in a community in Michigan. I captured each coalition member’s problem definitions using fuzzy cognitive mapping as well as their collaborators within the coalition. I used exponential random graph modeling to determine whether similarities in problem definitions predicted collaborative ties, including controls for participant sector, length of time in the coalition, and demographics. Findings suggest similarity in problem definitions among coalition members did not predict their collaborative ties. I conclude with a discussion of why this may be the case and future directions for the study of how coalitions function.
Dissociable behavioural signatures of co-existing impulsivity and apathy in decision-making
Authors: Petitet Pierre , Zhao Sijia , Drew Daniel , Manohar Sanjay G , Husain Masud
Published: August 2022

Apathy and impulsivity are expressed in a wide range of neuropsychiatric disorders, and, to a less severe extent, in healthy people too. Although traditionally considered to be opposite extremes of a single motivational spectrum, recent epidemiological questionnaire-based data suggest that both traits can in fact co-exist within the same individual. Here, we sought to investigate the relationship between these constructs in healthy people within a controlled task environment that examines the ability to make a decision under temporal uncertainty and measures the vigour of the response. Sixty participants performed a new version of the Traffic Light Task (TLT) and completed self-report questionnaire measures of apathy and impulsivity. Although the two traits were positively correlated in questionnaire assessments, they were associated with distinct behavioural signatures on the task. Impulsivity was expressed as an inflexible tendency to generate rapid anticipatory responses, regardless of task context. Apathy, on the other hand, was associated with a blunted effect of reward on response vigour. These findings reveal how apathy and impulsivity are related to distinct dimensions of goal-directed behaviour, explaining how these traits might co-exist in the same individuals.
Global well-being and mental health in the internet age
Authors: Vuorre Matti , Przybylski Andrew K
Published: August 2022

In the last two decades the widespread adoption of internet technologies has inspired concern that they have negatively impacted mental health and psychological well-being. However, research on the topic is contested and hampered by methodological shortcomings leaving the broader consequences of internet adoption unknown. We show that the past two decades have seen only small and inconsistent changes in global well-being and mental health that are not suggestive of the idea that the adoption of internet and mobile broadband is consistently linked to negative psychological outcomes. Further investigation of this topic requires transparent study of online behaviours where they occur, namely on online platforms. We call for increased collaborative efforts between independent scientists and the internet technology sector.
Revisiting the Role of Rehearsal in Intentional Forgetting: A Test of the Selective Rehearsal Account
Authors: Tanberg Pelin , Hockley William
Published: August 2022

In the item-method directed forgetting (DF) paradigm, participants study one item at a time, each followed by an instruction to remember (R) or to forget (F) that item. Previous studies have suggested that intentional forgetting occurs by terminating further rehearsal of F items, thus reducing their encoding into the long-term store. We tested the prediction that preventing rehearsal using another resource-demanding task should mimic the DF effect. In Experiments 1a and 1b, we compared a typical DF condition to a condition in which participants performed an alphanumeric equation distraction task to prevent rehearsal. Experiment 1a revealed that an intent to forget reduced memory more than did interfering with rehearsal using this distractor task. In Experiment 1b, we equated rehearsal strategies between conditions and found that preventing rehearsal by an F cue or by a distractor task produced equivalent results. In Experiment 2, implementing a distractor task during R cue presentation reduced memory but did not do so during F cue presentation. We suggest that two critical mechanisms are at play during encoding in intentional forgetting: the selective enhancement of R items by rehearsal and the selective removal of F items.
Trajectories of posttraumatic distress after smoke exposure during a coalmine fire: An analysis of risk and protective factors
Authors: Smith Catherine L , Campbell Timothy Colin Heath , Gao Caroline X. , Lane Tyler Jeremiah , Maybery Darryl , Berger Emily , Brown David , Ikin Jillian , McFarlane Alexander , Carroll Matthew , Abramson Michael
Published: August 2022

In 2014, the coalmine adjacent to the Hazelwood power station in the Latrobe Valley, Australia caught fire and distributed a large volume of toxic smoke into the surrounding community over 45 days. This study investigated risk and protective factors associated with four trajectories of posttraumatic distress (resilience; in-recovery; delayed-onset; chronic) in the affected community. A sample comprising 709 adults participated in two survey rounds, conducted in 2016-2017 and 2019-2020. Participants’ exposure to mine fire-related particulate matter (PM2.5) during the event, sociodemographic circumstances, physical and mental health histories, prior trauma, and exposure to recent stressful events were assessed. Mine fire-related posttraumatic distress was measured using the Impact of Events Scale – Revised and trajectories determined by categorising scores at each survey according to a threshold prescribed for identifying symptoms warranting clinical concern. Responses were analysed with univariate and multivariate multinomial regressions. Socioeconomic advantage and social support were associated with the resilient trajectory, which was the most common posttraumatic distress trajectory among participants. Prior trauma and recent stressful life-events, physical and mental health diagnoses, and loneliness were associated with chronic and delayed-onset trajectories. PM2.5 exposure during the mine fire was not a strong determinant of posttraumatic distress trajectory. Socioeconomic status, social connection, health and life experiences are among the most important factors shaping posttraumatic distress trajectories. These findings contribute to better understanding longer-term psychological resilience and vulnerability following disasters and can inform mental health initiatives within at-risk communities.