bluuebunny/crossref_metadata_2025 huggingface dataset:
THE DEVELOPMENT OF E-LKPD USING BOOK CREATOR ON FRACTION OPERATIONS MATERIAL IN ELEMENTARY SCHOOL
Authors:   Universitas Jambi, Setiawan Tri Yudha , Fikri Aidil
Published: July 2022

Through the online learning system that has been implemented, many problems arise. The online teaching and learning process causes students to feel bored while learning and does not fully convey the material to students. The purpose of this study was to determine the process of developing E-LKPD which was made by the author of the book. This research is a research and development (R&D) research using the DDD-E model (Decide, Design, Develop, and Evaluate). Sources of data in this study were three teachers and students. The instrument used in this study was a questionnaire distributed to teachers and students. E-LKPD was developed by fulfilling the valid, practical, and effective criteria. E-LKPD is declared valid with an average result of 88% with very feasible criteria. E-LKPD is declared practical with an average result of 88% with very good criteria. E-LKPD is declared effective with an average result of 94% with very good criteria. It is concluded that the E-LKPD is very suitable for use for elementary school students and is able to increase understanding and motivation to learn fractional arithmetic operations.
Noise Robust Illumination Invariant Face Recognition Via Bivariate Wavelet Shrinkage in Logarithm Domain
Authors: Chen Guang Yi , Krzyżak Adam , Duda Piotr , Cader Andrzej
Published: July 2022

Recognizing faces under various lighting conditions is a challenging problem in artificial intelligence and applications. In this paper we describe a new face recognition algorithm which is invariant to illumination. We first convert image files to the logarithm domain and then we implement them using the dual-tree complex wavelet transform (DTCWT) which yields images approximately invariant to changes in illumination change. We classify the images by the collaborative representation-based classifier (CRC). We also perform the following sub-band transformations: (i) we set the approximation sub-band to zero if the noise standard deviation is greater than 5; (ii) we then threshold the two highest frequency wavelet sub-bands using bivariate wavelet shrinkage. (iii) otherwise, we set these two highest frequency wavelet sub-bands to zero. On obtained images we perform the inverse DTCWT which results in illumination invariant face images. The proposed method is strongly robust to Gaussian white noise. Experimental results show that our proposed algorithm outperforms several existing methods on the Extended Yale Face Database B and the CMU-PIE face database.
Innovative Determinants of the Investment Attractiveness of a Country: The Case of Ukraine
Authors: Gavrysh Oleg , Kukharuk Anna , Gavrysh Iuliia
Published: July 2022

The study is devoted to the peculiarities of the investment attractiveness of a country in conditions of uncertainty. The article generalises the scientific approaches to the definition of investment attractiveness. The authors summarise the results of the international ranking of countries by the level of investment attractiveness and define the important role of innovation in ensuring a favourable investment climate. The article considers the peculiarities of the formation of investment attractiveness in Ukraine and summarises the priorities for the implementation of an innovation strategy, which will contribute to the possibility of post-crisis recovery. A promising area of further research is the evaluation of the effectiveness of Ukraine’s international partnership for the implementation of joint innovation projects in the direction of Industry 4.0.
Motives for the Usage of Collaborative Fashion Consumption Online Platforms
Authors: Michalak Szymon , Bartkowiak Paweł , Ankiel Magdalena , Olejniczak Tomasz , Stachowiak-Krzyżan Magda
Published: July 2022

In recent years, there has been a noticeable increase in consumer interest in participating in the sharing economy. One of the markets in which this is particularly visible is the clothing market. Dynamic technological progress and the virtualisation of life have contributed to the creation of applications with which consumers can buy, exchange or borrow clothes. The use of this type of application is treated as a manifestation of sustainable consumption. The main aim of the article is to determine the influence of selected motives on the attitudes towards these applications and their use. The article discusses the results of the research conducted in 2021 on a sample of 412 respondents. Confirmatory factor analysis and structural equation modelling were used in the process of analysing the results. The research results suggest that the most important motives for using the discussed applications were economic and utility, with their impact on attitudes towards these applications and the willingness to use them confirmed. Social motives turned out to be the lowest-rated group of determinants. Moreover, their negative impact on both attitudes towards the application and the willingness to use it was confirmed. Ecological motives turned out to be relatively important determinants of using the discussed solutions. Their influence on attitudes towards the application and consumption behaviour was confirmed.
Sector of Public Relations Agencies in Poland: Its State and Perspectives After the Covid-19 Pandemic
Authors: Tworzydło Dariusz , Szuba Przemysław
Published: July 2022

The article is based on the results of research on the sector of public relation (PR) agencies in Poland, which is an important part of the entire PR industry. The purpose of this article is to determine the potential of this sector in the post-pandemic period in the light of research results. The analysis focused on key parameters that influence the condition of the PR agencies sector, such as the number of agencies, type of activity, legal form, territorial distribution and financial indicators. Desk research (qualitative methodology) was used as the main research technique. The research was conducted on the basis of available databases and own datasets, such as lists of PR agencies, data from the Central Statistical Office (GUS), records stored in the Bisnode database, data from PR agencies’ websites and others. At a further stage, quantitative analysis of the collected statistical data was applied. The article illustrates the role of PR agencies in terms of the entire PR industry and presents a scheme for building a sampling frame on this type of companies.
Liquid Biopsy — A Novel Diagnostic Tool for Management of Early-Stage Peripheral Lung Cancer
Authors: Mikilps-Mikgelbs Rihards , Pūpola Dārta , Antone Elīna , Kiršners Arnis , Luguzis Artis , Salna Edgars , Krams Alvils , Ērglis Andrejs
Published: July 2022

Lung cancer is the leading cause of cancer-related mortality worldwide. Early diagnosis of lung cancer is hampered by the absence of specific symptoms and the lack of a widely recognised cost-effective screening programme. Acquisition of a tumour tissue sample for morphological and molecular genetic examination is of paramount importance for cancer diagnosis. We describe diagnostic challenges for early-stage lung cancer and their possible current solutions. Liquid biopsy is a relatively new technology that was developed for evaluation of tumour-related circulating genetic material. Recent achievements in data processing provide more opportunities for wider implementation of Next Generation Sequencing (NGS) in clinical practice. This article summarises available data on the current and future role of liquid biopsy in the management of lung cancer. We also present an ongoing Latvian lung cancer study that focuses on integration of liquid biopsy with comprehensive clinical data utilising advantages of information technologies.
Aerosol and Droplet Generation During Intubation and Normal Breathing: A Simulation Study
Authors: Kalniņš Edvards , Kazūne Sigita
Published: July 2022

The recent COVID-19 pandemic has made important changes to the everyday practice of anaesthetists. Current research has shown that the virus spreads via respiratory droplets and aerosolisation. The aim of this study was to examine the extent of contact contamination, droplet spread and aerosolisation, which may occur with normal breathing and intubation in a mannequin study. In the first experiment, an Ambu bag was attached to the simulation mannequin’s trachea and an atomiser device was placed into the mannequin’s pharynx. This model simulated normal ventilation as 0.5 ml of luminescent fluid was sprayed through the atomiser. In the second experiment, the mannequin was intubated with a videolaryngoscope while spraying 0.5 ml of luminescent fluid through the atomiser, after which the laryngoscope was removed. The spread of the luminescent aerosol cloud after three full breaths, droplet spread and contact contamination were visualised using ultraviolet light. The extent of spread was evaluated using a 4-point Likert scale (0 to 3) by two observers. Each of the experiments was repeated five times. For the first experiment, aerosol formation, droplet spread and contact contamination were 2.5 (2–3), 1 (0–1), 0 (0–1) points. In the second experiment, aerosol formation, droplet spread and contact contamination were 0.5 (0–1), 1 (0–1), 3 (2–3) points, accordingly. Noticeable contact contamination occurs during laryngoscopy and removal of the laryngoscope, whereas droplet contamination with laryngoscopy and normal breathing is minimal. Normal breathing leads to significant aerosol formation.
Effect of a Modified AN69ST Membrane on the Clinical Course of Adult Patients with Bacterial Septic Shock
Authors: Bogorodickis Arturs , Liguts Valdis
Published: July 2022

Sepsis is among the leading causes of mortality globally. Blood purification techniques are evolving in sepsis therapy, aiming at pathogenic antigens and host cytokines. The aim of this study was to determine whether continuous renal replacement therapy (CRRT) with modified AN69ST membrane, brand name oXiris, improves the clinical course of adult patients with septic shock. The study had a retrospective, longitudinal, propensity score matching (PSM) design with two groups: treatment — CRRT started with oXiris, control — used ST150 filters only. Data from 636 patients were analysed. The oXiris and control groups included 40 and 57 patients, respectively. PSM left 19 patients in each group. Ten of 19 patients died in the oXiris group. Survival, CRRT duration, intensive care unit or hospital length of stay did not differ between the groups. The oX-iris group had a tendency for lower mortality in Gram-negative infection cases, though not statistically significant. During the first 72h of CRRT, both groups had improvement in noradrenaline requirement, arterial pressure and blood lactate. However, with oXiris treatment, increase of arterial pressure (TA) was greater during CRRT during the first 24h and there was a more significant decrease of noradrenaline infusion and lactate during the first 72 h. We concluded that in septic shock early CRRT with oXiris may be beneficial and that there might be decreased hospital mortality in the case of Gram-negative infection. Further larger studies are required.
Prediction of the Difficult Laryngoscopy with Ultrasound Measurements of Hyomental Distance
Authors: Glāzniece-Kagane Zane , Bērziņš Arvīds , Kagans Aleksandrs , Grigorjevs Sergejs , Ozoliņa Agnese , Mamaja Biruta
Published: July 2022

Ultrasound measurement of hyomental distance is promising as a predictor for difficult laryngoscopy in cases of difficult airway management. The aim of the study was to evaluate the prognostic value of ultrasound measurement of hyomental distance (HMD) for prediction of difficult laryngoscopy. Hyomental distance was sonographically measured in neutral (HMDn) and extreme head extension (HMDe) positions for fifty-six patients scheduled for elective surgery requiring tracheal intubation. Then the hyomental distance ratio (HMDR) was calculated. According to presence of difficult laryngoscopy assessed by the Cormack–Lehane (CL) score, patients were divided into a difficult laryngoscopy group (DL, n = 15) and easy laryngoscopy group (EL, n = 41). We calculated the sensitivity and specificity of HMDn, HMDe, and HMDR for difficult laryngoscopy. DL was present in 15 (27%) patients. We found a significant intergroup difference in HMDR between the DL and EL groups (1.12 ± 0.04 vs. 1.24 ± 0.06, respectively; p < 0.001). In contrast, we were not able to find a significant difference for HMDn and HMDr. HMDR had the highest sensitivity 86.7% and specificity 85.4% (p < 0.01) to predict difficult laryngoscopy, where the area under the curve was 0.939; p < 0.01 for HDMR < 1.2 cm. Moreover, we found that difficult laryngoscopy was associated with higher body mass index (BMI), with higher values in the DL group compared to EL patients (34.3 ± 9.1 vs. 28.5 ± 5.7 kg/m2, respectively; p = 0.035). HMDR < 1.2 cm measured by ultrasound might have a good predictive value for prediction of difficult laryngoscopy.
Management of Proximal Femoral Fractures
Authors: Viru Mihkel , Juhanson Reile , Värsi Fred , Linde Indrek , Kiisk Karl , Rokk Alar , Kolk Helgi , Toompere Karolin , Karjagin Juri
Published: July 2022

Proximal femoral fractures are typical injuries in the elderly population. We conducted a retrospective study to estimate postoperative mortality and risk factors affecting patient outcomes at Tartu University Hospital. We retrospectively evaluated patients who were hospitalised in 2017 with a proximal femoral fracture diagnosis and who were operated (osteosynthesis, partial and total hip replacement). In the study we included 313 patients of 361 (219 women and 94 men). We did not find statistically significant difference between the choice of anaesthesia and mortality or between the time getting to the OR and mortality. Cognitive impairment and postoperative delirium were significantly associated with increased one-year mortality was 37% (p < 0.05). In the group of the patients who did not have postoperative delirium the overall mortality was 15%. 23% of the patients had preoperatively cognitive impairment, and 45.8% of them died in the first year after the operation (p < 0.001). Mortality of patients who did not have cognitive impairment was 14%. As the sample group of patients included in the study was small, further investigation should encompass a larger group in the future.
Assessment of Anaesthesia Nurses’ Attitude to Teamwork
Authors: Kairytė Greta , Gudaitytė Jūratė , Šimonytė Lina , Pikčiūnaitė Evelina , Macas Andrius
Published: July 2022

Teamwork is one of the most important aspects in medicine today. It is known that the operating room is the place where communication is most needed between doctors and other medical staff. The purpose of this study was to analyse the view of nurses towards collaboration between the physician and nurse in an anaesthesiology department depending on education and work experience. The study was conducted in three Lithuanian hospitals. The questionnaires “Jefferson scale of attitudes toward physician–nurse collaboration” and “Barriers of communication between doctors and nurses” were used. The statements of the questionnaires were rated using the Likert scale; the attitude was evaluated as positive when the assessment was more than median (2.5). The results were processed by SPSS Statistics 23.0 pack, using descriptive statistics and ANOVA, with statistically significant results when p < 0.05. A total of 138 nurses participated in this study, all female, aged 43.00 ± 12.48 years and with different education levels. According to the nurses, the most important aspects of teamwork were dominance of physicians (3.08 ± 0.65), nurse’s autonomy (3.46 ± 0.54), patient care (3.33 ± 0.56) and sharing knowledge and cooperation (3.33 ± 0.47) (F = 12.47; p < 0.001). Patient care and autonomy of nurses were most important aspects for nurses with higher education and short job experience, and physician dominance was the most important for nurses with a longer job experience and lower education level. Barriers to cooperation arising from environmental factors are the greatest drivers for ineffective teamwork.
“Vamos fazer-nos ouvir”
Authors: Rios Clementina , Neilson Alison Laurie , Menezes Isabel
Published: July 2022

Este estudo visa compreender a potencialidade de dispositivos participativos no ativismo de crianças, procurando perceber como problematizam e como intervêm em questões ambientais da floresta local. Envolveu, durante três meses consecutivos, 22 crianças com dez anos do 4.º ano do 1.º ciclo do ensino básico em momentos de participação, numa lógica de ação-reflexão. Com base numa abordagem de perfil comunitário, as crianças investigaram a floresta local e foram implicadas num processo de exploração dos problemas e de identificação de soluções para as questões que identificaram como pertinentes. Os dados foram recolhidos através de vários dispositivos: diários de bordo, desenhos e projetos elaborados pelas crianças; fotografias, vídeos do processo, e notas de terreno da investigadora contendo registos de discussões conjuntas com as crianças e de conversas informais com familiares; e entrevistas semiestruturadas com as professoras. A análise revela as crianças como agentes ambientais com práticas ativistas, por exemplo, ações coletivas que desenvolveram na floresta, a solicitação de parcerias na comunidade para a resolução de problemas ambientais locais e a organização de uma manifestação na comunidade, para se fazerem ouvir. A aprendizagem na floresta não só promoveu uma tomada de consciência por parte das crianças, designadamente a respeito do impacto da visão dominante antropocêntrica na sustentabilidade, como também as motivou a pôr em prática o seu ativismo ambiental.
 
Recebido: 21/2/2022
Aceite: 30/5/2022
Validation of a preliminary competency assessment scale for Malaysian graphic design graduates
Authors:   UCSI University, De Institute of Creative Arts and Design (ICAD), Kuala Lumpur, Malaysia, Wong Shaw-Chiang , Idris Muhammad Zaffwan ,   Universiti Pendidikan Sultan Idris (UPSI), Faculty of Art, Computing and Creative Industry, Tanjong Malim, Malaysia
Published: July 2022

The criteria for measuring the competency levels of graphic design (GD) graduates have continuously been shaped by the changing context of practice. However, previous studies provide little evidence on the existence of an effective competency assessment scale for GD graduates. The purpose of the study is to evaluate the psychometric properties of a preliminary competency assessment scale for GD graduates in Malaysia. 207 final year GD degree students in Malaysia were sampled to validate the scale. The data was analysed using exploratory factor analysis and Cronbach’s reliability test. The results suggested that the preliminary scale consists of 12 constructs and 59 items under five competency dimensions. All 12 constructs yielded high internal consistency values, ranging between .723 and .914. Theoretically, the validated scale contributed to a new body of knowledge to the competency assessment of GD graduates in Malaysia. Practically, the findings provided relevant stakeholders with prescribed standards of performance and appropriate tools to assess the competency levels of new entrants to the GD profession.
Pengaruh Ketebalan Panel Akustik dari Limbah Kulit Durian terhadap Koefisien Absorbsi dan Impedansi Akustik
Authors: Aziza Yusratul , Elvaswer Elvaswer
Published: July 2022

Telah dilakukan penelitian tentang pengaruh ketebalan panel akustik dari limbah kulit durian terhadap koefisien absorbsi dan impedansi akustik. Metode yang digunakan yaitu metode tabung impedansi pada komposit berbahan dasar serat limbah kulit durian dengan tepung kanji. Sampel material akustik yang terbuat dari serat limbah kulit durian dengan variasi ketebalan yang berbeda-beda yaitu 2 mm, 4 mm, 6 mm, 8 mm dan 10 mm. Frekuensi bunyi yang digunakan pada penelitian ini adalah 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz dan 8000 Hz. Hasil dari penelitian menunjukkan bahwa nilai koefisien absorbsi bunyi tertinggi pada sampel dengan ketebalan 10 mm dengan frekuensi 2000 Hz yaitu 0,96 dan nilai koefisien absorbsi terendah pada frekuensi 500 Hz yaitu 0,71 dengan ketebalan sampel 2 mm. Nilai impedansi akustik tertinggi terjadi pada frekuensi 2000 Hz yaitu 1,61 dyne.s/cm5 dengan ketebalan sampel 10 mm. Berdasarkan nilai koefisien absorbsi bunyi dan impedansi akustik maka serat limbah kulit durian berpotensi digunakan sebagai bahan penyerap bunyi.
Rancang Bangun Alat Pendeteksi Suhu Tubuh Untuk Mencegah Penularan Covid-19 dengan Sensor Infrared Berbasis Arduino Uno
Authors: Wahdini Yulia , Firmawati Nini
Published: July 2022

COVID-19 menjadi pandemi yang meresah, dikarena penularannya sangat mudahÂ  dan belum ditemukan obatnya, diperlukan pencegahan dengan mengenali tanda yang pada umumnya pertama kali muncul adalah suhu tubuh yang meningkat yaitu > 37,5 ï‚°C sehingga, diperlukan alat bantu dalam mengukur suhu tubuh untuk mencegah penularan COVID-19. Telah dibuat rancang bangun alatÂ  yang bekerja dengan pengindraan radiasi infrared yang dipancarkan objek, dideteksi sensor infrared MLX90614 diubah menjadi sinyal listrik. Sinyal kemudian diolah mikrokontroler pada Arduino Uno dengan bahasa pemograman IDE Arduino, keluarannya berupa nilai temperatur yang ditampilkan pada LCD (liquid crystal dislay) dan notifikasi dari buzzer jika nilai termperatur >=37,5 C serta membuka pintu secara otomatis jika nilai termperatur < 37,5 C.
The Bilinear Formula in Soliton Theory of Optical Fibers
Authors: Saputra Nando , Ripai Ahmad , Abdullah Zulfi
Published: July 2022

Solitons are wave phenomena or pulses that can maintain their shape stability when propagating in a medium. In optical fibers, they become general solutions of the Non-Linear SchrÃ¶dinger Equation (NLSE). Despite its mathematical complexity, NLSE has been an interesting issue. Soliton analysis and mathematical techniques to solve problems of the equation keep doing. Yan & Chen (2022) introduced them based on bilinear formula for the case of the generalized NLSE extended models into third and fourth-order dispersions and cubic-quintic nonlinearity. In this paper, we review the form of the bilinear formula for the case. We re-observed a one-soliton solution based on the formula and verified the work of the last researcher. Here, the mathematical parameters of position Î±(0) and phase Î· are verified to become features of change in horizontal position and phase of one soliton in the (z, t) plane during propagation. In addition, we notice the soliton has established stability. Finally, for the condition Kerr effect focusing or the group velocity dispersion Î²2 more dominates, we present like the soliton trains in optical fibers under modulation instability of plane wave.
Rancang Bangun Alat Ukur Konsentrasi Mikroplastik dengan Cladding Gelatin berbasis Sensor Serat Optik dan Mikrokontroler
Authors: Sundari Diah , Harmadi Harmadi
Published: July 2022

TelahÂ dirancang alat ukur konsentrasi mikroplastik dengan cladding gelatin berbasis sensor serat optik evanescent. Mikropastik yang digunakan pada penelitian ini adalah resin akrilik dengan variasi konsentrasi sebesar 0 ml, 25 ml, 50 ml, 75 ml, dan 100 ml. Cladding serat optik dikupas dan diganti dengan menggunakan gelatin. Variasi pengupasan dilakukan sepanjang 1 cm, 2 cm, dan 3 cm. Laser dioda digunakan sebagai sumber cahaya, serat optik sebagai transmisi cahaya, fotodioda digunakan sebagai detektor cahaya pada penelitian ini. Mikrokontroler Arduino Uno R3 digunakan sebagai pengolah sinyal dan LCD digunakan sebagai penampil hasil pengukuran konsentrasi. Konsentrasi diukur berdasarkan tegangan fotodioda. Hasil karakterisasi menunjukkan bahwa pengupasan 1 cm merupakan pengupasan yang paling optimum untuk pengukuran konsentrasi mikroplastik pada larutan resin akrilik dengan koefisien determinasi sebesar =0,9857. Persentase kesalahan rata-rata alat ukur konsentrasi mikroplastik yang dirancang sebesar 1,902 %.
First formal record of Cheilomenes sexmaculata (Coleoptera: Coccinellidae) in Mexico
Authors: RODRÍGUEZ-VÉLEZ José M.
Published: July 2022

The presence of the coccinellid Cheilomenes sexmaculata (Fabricius) is formally reported for the first time in Mexico, on September 10th, 2021, in the Edzná Valley, in the state of Campeche, in corn cultivation.
ANALISIS EKSPERIMEN DETEKSI STRUKTUR RONGGA DI BAWAH PERMUKAAN TANAH DENGAN GPR
Authors: Ariska Nabilla Putri , Arseno Dharu
Published: July 2022

Peningkatan jumlah penduduk di Indonesia mempengaruhi kebutuhan perluasan wilayah dan pembangunan infrastruktur. Proses pembangunan infrastruktur perlu melalui banyak tahapan, terutama bagi wilayah yang tidak adanya pendataan dengan baik sebelumnya. Banyak sekali kasus penanaman saluran gas PGN, jaringan kabel PLN, dan gorong-gorong yang tidak sesuai dengan standar yang telah ditetapkan. Untuk mencegah terjadinya kerusakan saluran pada proses pembangunan dapat disiasati dengan mengidentifikasi infrastruktur wilayah. Diharapkan dengan adanya proses identifikasi infrastruktur wilayah dapat membantu pihak terkait agar menjalankan pembangunan lebih efektif. Proses identifikasi dapat dibantu menggunakan Ground Penetrating Radar (GPR) yang dapat mendeteksi objek di bawah permukaan tanah.Pada eksperimen ini akan dilakukan analisis eksperimen dengan memodelkan kondisi yang menyerupai situasi di lapangan. Pengambilan data akan menerapkan frekuensi Ultra Wideband (UWB) yang memungkinkan pengukuran jarak secara presisi dan hasil citra dengan resolusi tinggi. GPR akan dimodelkan dengan sebuah alat yaitu Vector Network Analyzer (VNA) yang berfungsi untuk memancarkan serta mengolah sinyal yang ditransmisikan. Metode A-scan digunakan untuk mendeteksi saluran dengan rongga sebesar 5 cm dan 15 cm. Pada metode A-scan, kedua pemodelan dapat terdeteksi sesuai dengan ukuran saluran yang dimodelkan. Metode B-scan yang digunakan dapat memperlihatkan batas penampang secara citra 2 dimensi.Kata Kunci: GPR, UWB, VNA, Saluran Berongga.
PENINGKATAN KINERJA FUTURE RAILWAY MOBILE COMMUNICATION SYSTEM UNTUK KERETA CEPAT INDONESIA DENGAN SINGLE INPUT MULTIPLE OUTPUT - DOPPLER SPREAD COMPENSATOR
Authors: Amalia Nisa Noor , Anwar Khoirul , Adriansyah Nachwan Mufti
Published: July 2022

Future railway mobile communication system (FRMCS) merupakan sistem pensinyalan kereta cepat berbasis the fifth telecommunication generation new radio (5G NR) third generation partnership project (3GPP) TS 22.289 dan European telecommunication standard institute (ETSI) TR 103 459. Pergerakan kereta yang cepat mengakibatkan kerusakan sinyal akibat adanya pergeseran frekuensi yang dirasakan oleh penerima, sehingga mengganggu sistem komunikasi kereta cepat. Untuk mendukung pensinyalan kereta cepat yang baik dan berkapasitas besar, makalah ini mengusulkan single input multiple output (SIMO) dengan Doppler spread compensator (DSC) untuk memanfaatkan space diversity kanal antara transmitter dan receiver yang terletak di atas gerbong kereta. SIMODSC yang diusulkan memiliki dua antena array paralel yang berjarak 5? = 1.6 m di atas gerbong kereta. Evaluasi SIMO-DSC yang diusulkan dilakukan dengan rangkaian simulasi komputer untuk kinerja bit error rate (BER) terhadap signal to noise power ratio (SNR), frame error rate (FER) terhadap SNR, dan BER terhadap normalized Doppler spread ( fdTs) pada model kanal kereta Indonesia. Hasil penelitian menunjukkan bahwa SIMO-DSC mampu menghilangkan Eefek Doppler secara signifikan, dan meningkatkan performansi FRMCS meskipun pada kecepatan 1000 km/jam.

Kata Kunci: DSC, Efek Doppler, SIMO
SISTEM PEMANTAU KUALITAS UDARA DALAM RUANG MENGGUNAKAN RASPBERRY PI DAN TELEGRAM
Authors: Fahreza Manggala , Candra Henry
Published: July 2022

Polusi tidak hanya terjadi di luar ruangan namun juga di dalam ruangan. Faktor terbesar penyebab buruknyakualitas udara dalam ruangan adalah ketidak lancaran sirkulasi udara dan adanya zat polutan. Buruknya kualitas udara dalam ruangan dapat menimbulkan Sick Building Syndrome dan Building Related Illness. Agar menjaga kualitas udara dalam ruangan perlu adanya sistem monitoring untuk memantau zat-zat yang berbahaya di dalam ruangan khususnya dalam ruangan kerja. Dalam penelitian ini dilakukan perancangan sistem monitoring suhu, kelembapan, karbon monoksida, karbon dioksida dan partikel debu. Sistem menggunakan 4 sensor, 3 mikrokontroler NodeMCU dan 1 Raspberry Pi. NodeMCU mengirimkan notifikasi via Telegram saat nilai pembacaan sensor melebihi batas normal. Raspberry Pi berfungsi menerima data pembacaan sensor dari NodeMCU, menyimpan pada server database dan menampilkannya menggunakan aplikasi Grafana. Notifikasi via Telegram dapat membantu user untuk pemberitahuan dini status kualitas udara. Hasil pengamatan didapatkan kondisi zat karbon monoksida, karbon dioksida dan partikel debu memenuhi persyaratan sedangkan suhu dan kelembapan pada ruangan tersebut perlu disesuaikan kembali. Parameter delay pengiriman data yang diperoleh sistem adalah kurang dari 1 detik - 1 detik untuk NodeMCU 1 dan NodeMCU 2. Sedangkan delay NodeMCU 3 adalah 3 detik – 3,7 detik. Dari hasil yang diperoleh, sistem dapat digunakan untuk mengamati kualitas udara di dalam ruangan.

Kata Kunci: Polusi, Indoor, Raspberry Pi, Telegram
Turismo cinematográfico en Nueva Zelanda: Hobbiton Movie Set como estrategia inversa
Authors:   Universidad de Cádiz (España), Álvarez Rodríguez Víctor
Published: July 2022

This paper is an exploration of film tourism in New Zealand through the development of a fic‑ tional enclave. It is research that shows how an audiovisual element is transferred to the real world. The study is structured following the advertising technique of reverse product placement with one of its most relevant cases: the Hobbiton Movie Set. Thus, a phased exploratory‑descriptive methodology was used. First, a bibliographic analysis of the State of the Art was addressed. Then Tayla Roa, the event coordinator in the enclave, was interviewed to learn about the processes involved. Lastly, a qualitative analysis of the case was carried out where the previous results were crossed to give an overview of the dimensions of this tool. In conclusion, the possibilities of a tourist development from fiction are observed where a transmedia narrative experience is capable of conquering visitors from all over the planet.
Teaching Chemistry: Teachers' Challenges in the Period of the Covid-19 Pandemic in the City of the Abaetetuba-Pa Amazon Region
Authors: Sarges Dheffeson Lobato Rodrigues , Bitencourt Heriberto Rodrigues , Pinheiro José Ciríaco , Almeida Ossalin de , Paixão de Almeida Roseli da Rocha , Feio Farias Rômulo Augusto
Published: July 2022

Chemistry is a complex discipline and difficult to pass on to students since its essence is practice and despite the theory predominating in the classroom, practical classes also occur. However, with the Covid-19 pandemic, discipline practices became unfeasible as teaching became remote. Therefore, teachers had to create new online teaching methodologies. Thus, in this context, work will be carried out to portray the challenges of chemistry teachers in the municipality of Abaetetuba-PA.
Severe constipation due to sacral perineural cysts in a pediatrics patient: A case report
Authors: Shimauchi-Ohtaki Hiroya , Honda Fumiaki , Nakamura Shunsuke , Yoshimoto Yuhei
Published: July 2022

Background:

Symptomatic perineural cysts are rare in pediatric patients. Severe bowel dysfunction caused by the perineural cysts at the sacral level is particularly rare in children. Moreover, the long-term outcome of surgery for the perineural cysts in pediatric patients is uncertain. Here, we describe a rare case of perineural cysts originating in the S3 roots in a pediatric patient that manifested as severe constipation.

Case Description:

The case was a 13-year-old girl who presented with intractable vomiting and constipation. She also had low back and buttock pain, urinary incontinence, and periproctal sensory disturbance. Radiological studies revealed bilateral perineural cysts originating from the S3 nerve roots, which were considered to be the cause of her symptoms. Microsurgical decompression of the cysts relieved her intractable bowel dysfunction. There has been no recurrence in the 5 years since surgery.

Conclusion:

This case suggests that microsurgery for severe bowel dysfunction due to symptomatic perineural cysts could have a satisfactory long-term outcome in pediatric patients.
The translation accuracy in children story dorothy and mikey
Authors: Widarwati Nunun Tri , Indri Astuti Purwani , Wijayava Ratih
Published: July 2022

The study aims to find the quality of translation children story by the theme “Dorothy and Mikey” from English to Indonesian. The Study used qualitative method by using accuracy of translation. Data used all of senteces in the pictures children story the tittle is “Dorothy and Mikey”. Sources of data contain document, children story book in English and it translation. We used forum group discussion to analyze document. The findings that 82 data or 84,54% accurate and 15 data or 15,46% less accurate in the Dorothy and Mikey story. 
Integrating the use of social media for group collaboration in ESP classroom
Authors: Lailiyah Malikhatul , Putra Suatmo Pantja
Published: July 2022

The rapid development of information technology has been facilitated the change of how we communicate. With the mediation of technology, such as social media, there are no boundaries of time and distance to talk with others. This research aimed to report on the collaborative satisfactions and experinces of higher education students which occurred during completion in English as Specific Purposes class. To answer the questions, a set of questionnaire was distributed. The results showed that overall students showed a positive view of teamwork embedded through social media. This research tried to understand how students perceive collaboration and how they collaborate on learning tasks through the use of social media.
Barriers in EFL online learning experienced by learners during Covid-19 outbreak
Authors: Aulia Vivi
Published: July 2022

This research aimed at reviewing the barriers in EFL online learning experienced by learners in some countries like Indonesia, Saudi Arabian, Algeria, Jordan, and Ecuador during online learning gained from the research articles. This research was described descriptively with qualitative approach. The data being investigated in this research were five research articles from different researchers in different countries where they conducted research about barriers of EFL online learning during Covid-10 outbreak viewed from learners’ experiences. The results of this research showed that those five countries faced similar barriers in EFL online learning during Covid-19 outbreak. They were technical matter (internet connectivity) and social matter (passive interaction among teachers and learners). The conclusion stated that possible infrastructure for supporting high speed access internet should be considered by the policymakers in each country providing both technical and economic support to access it easily. Thus, for those who have barriers related to social matter, it was important for EFL teachers to create a strategy that made the class interactive and interesting as well as motivated the EFL learners interested to learn. Internal motivation from the EFL learners and teachers themselves to accommodate online learning creatively was needed. 

 
An Analysis of Deleuze and Guattari’s Territorialization Anti-Oedipus Psychoanalytic Criticism in Fyodor Dostoevsky’s Notes from Underground (1864)
Authors: Sudarso Hendra , Dibdyaningsih Haris , Ramadhan Rizki
Published: July 2022

The unnamed character in Notes from Underground is anxious to make his life worse. The Anti-Oedipus theory of Deleuze and Guattari deals with psychological problems of people who try to make their lives worse. Territorialization is a desire to valorize certain organs and objects at the expense of others. This study applies descriptive qualitative research method since the objective is to describe and reveal how the central characters’ effort in changing his life’s condition. This study is conducted through some steps, close reading and note taking, interpreted, and concluded to identifying right quotations, phrases, dialogues and monologues. The researcher analyses and describes the results of the efforts of the unnamed central character in changing his life as theory of Deleuze and Guattari. Based on the analysis in this study, it can be concluded that the unnamed central character in Notes from Underground did some efforts to change his life in line with the Anti-Oedipus theory of Deleuze and Guattari. There are unconsciousness and consciousness desire that show how the central characters’ efforts in changing their life. Based on Deleuze and Guattari, the unnamed central character in Notes from Underground shows that his desire which supports the character to change his life condition becomes worse dominates his unconsciousness desires and his consciousness will help him to make his desire change his life condition.
The effect of fantasy movie in writing for junior high school student
Authors: Agustin Dhita Wahyu , Styati Erlik Widiyani , Vendityaningtyas Vita
Published: July 2022

Fantasy movies are a type of movie that combines the imaginative and fantastic themes. Fantasy is something that does not really exist and only exists in the mind or mind. This research aims at investigating the effect of fantasy movie in writing for junior high school student. The quasi-experimental research used in this study. The participants were the students of SMPN 13 Madiun. The researchers used writing test to collect the data. In analyzing the data, the researchers use independent t-test. The result shows that there is a significant difference in students' narrative text writing skills between the experimental class and the control class. Students who are taught using fantasy movies gain higher scored than students who are taught using conventional teaching. The results obtained that the significance value of equal variances is assumed to be 0.000, it could be concluded that it is smaller than 0.05 (0.000 < 0.05). This means that fantasy movie media brings many benefits for students to write their writing skills
Snowball Throwing: An English Learning Method to Teach Descriptive Writing
Authors: Aditya Maulana Yusuf , Ridwan Arfiyan
Published: July 2022

Writing is a powerful multipurpose tool that helps us discover and  explore more fully what we are thinking so that we learn as well as express our feelings and thoughts. One of reason that students lazy to written something because the methods are used by their teacher.  Most of them still used direct learning method (extracurricular learning), the students were bored and they are did not enjoy when teaching learning process. So, that is why, in this study the writers try to use snowball throwing method to help students in learning descriptive writing. The data collection methods which used in this study are observation checklist and questionnaire checklist. Observation used to find out the implementation snowball throwing on students writing in descriptive text. The questionnaire was used to know the students’ responses after being taught descriptive text by using snowball throwing method. This study reveals that the highest aspect score of observation checklist in first observation is less, but in the second meeting, the writers found that highest aspect score of observation was good. Based on data questionnaire checklist, the writers found that the highest students’ responses were good. Based on this result data resource above, the writers concluded that the students could master writing after they were taught using snowball throwing in writing descriptive text. Finally, the writers suggested that the students had to practice their writing skill in many times. Besides, teacher had to have an interesting method in teaching writing descriptive text.
Podcasts: Improving Students’ Extensive Listening Skills
Authors: Camelia R Dwi Arifa , Aditya Maulana Yusuf , Ridwan Arfiyan
Published: July 2022

Podcasts is one of the technologies that can be used as an effective media to teach students’ listening skill, especially extensive listening. This research aims to know the effectiveness of using podcasts application in teaching extensive listening. The method in this study used quantitative research. The design of this research was pre-experimental one group pre-test and post-test design. It involved the Eleventh Grade Students of SMA Negeri 2 Bangkalan as the subject of the research. In this research, the data were obtained toward the results of listening tests. The research was started by giving pre-test, treatments, and post-test to experimental group. The data of the tests were analyzed by using Paired Sample T-Test. The results showed the significant difference between pre-test and post-test, It indicate that the value of significance (Sig. 2-tailed) is 0.002 lower than 0.05. The results of the statistical hypothesis testing showed that the P-value lower than α (0.002<0.05), it means that Ha was accepted and Ho was rejected. It can be concluded that podcasts application is effective and brilliant media that can be suggested to be used on teaching listening.
The Representation of Politeness in EFL Clasroom: An Investigation of Language Used by Lectures and Students in STKIP PGRI Bangkalan
Authors: Maimuna Maimuna , Chairuddin Chairuddin , Ulfa Siti Maria
Published: July 2022

Politeness is a person's politeness in speaking, so that between the speaker and the listener do not feel threatened (offended) in politeness, there are two opinions namely the politeness strategy and the politeness principle. Both are the same, only differ in classifying. Politeness strategy consists of off record, on record,  negative politeness and positive politeness. The politeness principle, consist of the tact maxim, generosity maxim, approbation maxim, modesty maxim, sympathty maxim and agreement maxim. This study examined conversations between lecturers and students. The samples of this research were from screenshot of the teaching-learning conversation between lecturers and students via whatsapp. Collecting the data, analyzing and classifying were conducted word by word. The results of this study were students and lecturers often used language clearly and to the point, which is included on the record, namely using the sentence directly and also they used politeness priciple
The Factor of Self-Confidence Affecting to Indonesian Young Learners’ English Speaking Proficiency Level
Authors: Hadi Muhamad Sofian , Mutiarani Mutiarani , Hamid Aulia Rofika
Published: July 2022

This research aims to estimate and get to know more about self-confidence factors that may affect to English speaking proficiency level for Indonesian young learners. The researcher used a qualitative method. In this research, the primary data was collected by focusing on the aspects and points that the researcher wanted to observe about. The primary data was used as a model and framework of the conceptual learning and teaching through the speaking proficiency level. In addition, the main object for this research is about Indonesian young learners towards the English speaking proficiency level. The researcher hopes that there will be significant results based on the primary data that will show the impact of self-confidence to influence the speaking proficiency level by Indonesian young learners. Therefore, the final result of research will be meaningful for the future researches in the similar study. It goes the same to the teachers and students that participate in teaching and learning English.
Teacher multimodal feedback: Investigating students’ preferences and voices
Authors: Sulistyo Teguh , Sholeh Agus , Sari Nara
Published: July 2022

This present study highlights the implementation of teacher multimodal feedback provision in speaking classes, especially students’ preferences and voices after obtaining teacher feedback. Teacher multimodal feedback was implemented in one semester (14 weeks) in two speaking classes with 36 students majoring English Language Department of a university in Malang, Indonesia. A questionnaire using a 4 Likert scale and an open-ended option was distributed to all respondents, and an in-depth interview was conducted with ten of them where five students represented each class. The data which were analyzed quantitatively indicate that students have different preferences in receiving teacher feedback, and they believe that teacher multimodal feedback is beneficial to improve their L2 oral productions. Direct feedback is the type they like most, but interruption is the mode of feedback they hate most. Some indications also suggest that teachers need to construct positive teacher-student social relationships in the classrooms. Some implications are also discussed.
“Killing an arab” by The Cure: is this a racism?
Authors: Husaini Rizqi , Fahas Rida
Published: July 2022

This study aims to find out about everything that is in the song "Killing an Arab" which was popularized by The Cure. The research uses a qualitative approach that focuses on analyzing the content of the song. The data was obtained from documentation and observations of several articles both related to the song and articles about the phenomenon of racism. The result of the research is this song has a meaning that is difficult to interpret. Whether or not this song is racist depends on the perspective of each listener in interpreting this lag. The Cure's objection that this song does not contain racism clearly refutes everything that develops in society. But still for the racism in this song will never go away. Because everyone's perspective is different in interpreting this song.
THE USE OF KWL (KNOW, WANT, LEARNED) STRATEGY ON STUDENTS’ READING COMPREHENSION
Authors: Heriyawati Dwi Fita , Irawati Lulus , Haliwala Angellia C.L.T
Published: July 2022

This study aims at investigating the effectiveness of KWL (Know, Want, and Learned) strategy on the students’ reading comprehension. Quasi-experimental design was used in the study. The population
taken was the seventh grade students of SMP PGRI 6 Malang. There were 54 students belonging to class VII C as the experimental group and VII A as the control group. Both pre and post tests were executed to obtain the data. The primary data were gained by comparing the result of post-test from the experimental group and that of the control group. The result of post-test exhibits that the sig. (2 tailed) or p- value is 0.000 lower than 0.05 (the level of significance). It means that the students who are taught by using KWL strategy have better reading comprehension than those who are not. The results of questionnaire show that the students give very good responses related to the implementation of KWL strategy. Overall, the results imply that the students’ reading comprehension can be effectively increased by using KWL strategy.