bluuebunny/crossref_metadata_2025 huggingface dataset:
A Review of Recent Deep Learning Models in COVID-19 Diagnosis
Authors: Bhattacharya Ela , Bhattacharya D.
Published: February 2022

COVID-19 has emerged as the latest worrisome pandemic, which is reported to have its outbreak in Wuhan, China. The infection spreads by means of human contact, as a result, it has caused massive infections across 200 countries around the world. Artificial intelligence has likewise contributed to managing the COVID-19 pandemic in various aspects within a short span of time. Deep Neural Networks that are explored in this paper have contributed to the detection of COVID-19 from imaging sources. The datasets, pre-processing, segmentation, feature extraction, classification and test results which can be useful for discovering future directions in the domain of automatic diagnosis of the disease, utilizing artificial intelligence-based frameworks, have been investigated in this paper.
Dynamic Modelling of a Solar Energy System with Vehicle to Home Option for Newfoundland Conditions
Authors: Sundararajan Raghul Suraj , Iqbal M. Tariq
Published: February 2022

This paper discusses the dynamic modelling of a solar energy system with vehicle to home (V2H) option for Newfoundland condition. A location was chosen (13 Polina Road) in St. John’s, Newfoundland, Canada. Using BEopt, Homer and MATLAB software, an optimized system was designed for the chosen site to satisfy the house’s energy demand. Furthermore, the concept of V2H is also implemented with aid of smart current sensors installed in the house. When the power provided by the PV panel and the stored energy in the inhouse battery is less than the load’s energy demand, the Nissan Leaf’s battery used to supply home loads in V2H operation mode. The system operates based on the information generated by the sensors. Detailed system dynamic modelling is also presented along with the simulation results. Eight system control modes are proposed and simulated.
Development and Application of Probabilistic Performance Index for Ranking N-1 Contingencies
Authors: Musa Saidu Y. , Madaki Monday A. , Haruna Jinkai
Published: February 2022

Contingency analysis and ranking are important tasks in modern electrical power systems which aim at keeping the power system secure, reliable, and stable. N-1 contingency is the loss of any one component of power system and is obviously the most frequent contingency in power system. Contingency ranking has most often been done using deterministic indices which can be either active power performance index (PIP), voltage performance index (PIV) or the overall performance index (PI). Power system contingencies are ranked based on the calculated Performance index for each contingency. Ranking is from the contingency with the highest performance index first and proceeds in a descending manner which corresponds to the most severe to the least severe contingency. Due to the fact that Contingencies are unpredictable events, researchers of recent have suggested the inclusion of the probability of the occurrence of a contingency in its ranking index. This makes the index probabilistic. In this work, the development and application of probabilistic performance index for ranking N-1 contingencies is considered. It is illustrated with a case study.
Application of Failure Assessment Diagram (FAD) for Steel Welded Connection Based on BS7910 and DNV-RP-108
Authors: Aboalriha W.
Published: February 2022

The failure assessment diagram (FAD) method has been widely accepted to evaluate the extent to which cracks may affect structural safety. The usage of this FAD method has been validated and included in [1]-[3]. The structure under investigation, described in four fully welded T-joint (BCC5) specimens, where these welded joints are a source of stress concentration and defects from which fatigue cracks can grow. The four specimens were modeled under different displacement loading using a finite element analysis program Ansys and SolidWorks software. In this work, the application of a FAD (Lr, Kr) using maximum stress, cumulative stress ranges, and the last half-cycle stress range was investigated. The results are showing that all the points were lying outside the FAD curve except for the BCC5D specimen point was inside FAD when using maximum stress.

Conclusions made that the cumulative stress gives Lr and Kr are extremely large and hence predict failure too early. With the Crack Tip Opening Displacement (CTOD) of the test specimen assumed to be about 1mm rather than 0.1mm it was found that, if a FAD is to be used to indicate failure, then both Lr and Kr should be based on the maximum stress. It appears that the FAD methodology does help to predict the final failure (which is the usual application in such cases). This represents more effectively the structural behavior and would be more easily used by designers.
Application of VSM to Improve a Television Productive Process of a Company in the Manaus Industrial Pole
Authors: Da Silva Camila Maria Costa , Oliveira Marcelo Albuquerque de , Veroneze Gabriela de Mattos , Da Silva Polyana Almeida
Published: February 2022

Value Stream Mapping (VSM) enables, through its own symbology, the improvement of the flow of materials and information, helps to eliminate activities that do not add value and other waste. The present study refers to the application of the VSM tool for the improvement of a television productive process of a company in the Manaus Industrial Pole. The research is classified as a case study with a qualitative approach, of an applied nature with an exploratory objective. Activities throughout the production process were analyzed and characterized to obtain points of improvement in operating time, such as a 75% reduction in inventory time and 7.3% in the final line. As a contribution, it was possible to identify the points of unproductive that cause losses and failures that can help for future studies and new improvements.
Supply Chain System Model of Components for Assembly Lines Based on Kanban and Milk Run Methodologies
Authors: Dos Santos Victor Hugo Oliveira , Oliveira Marcelo Albuquerque de , Veroneze Gabriela de Mattos
Published: February 2022

Seeking to optimize the raw material supply for the assembly lines in many industries, the following case study, starting with a direct observation of a motorcycle factory and an electronics assembly factory, based on a rich theoretical analysis of the Lean wastes, describe the factories present processes and focus on developing a fast, feasible and low cost solution, gathering concepts of Kanban and Milk Run methodologies, resulting in a proposal of a system of real time management of the production status, allowing a better organization for the logistics teams of the named companies.
Application of Correlation and Regression Models in Predicting the Physico-chemical Quality of Groundwater from Insitu Measured Parameters
Authors: Agori J. E. , Nwoke H. U. , Okoro B. C. , Dike B. U.
Published: February 2022

Groundwater is the major source of municipal and private potable water supply for meeting the drinking, domestic, agricultural and industrial requirements on man around the world. The cost of analyzing water quality in the laboratory to ascertain its potability is usually high and sometimes not available. Groundwater samples were collected from fifty (50) spatially referenced bore well locations in Warri and its environs in the dry and wet seasons (November 2019 to January 2020) in the study area. The water samples were analyzed for twenty-six (26) physical, chemical and bacteriological parameters both in the field and laboratory in line with APHA standard procedures for testing water and waste water inorder to evaluate the status of potability of groundwater across Warri, Delta State Nigeria. The data analysis tool in Microsoft Excel was used to explore and study the interrelationship between some conservative parameters measured in the field (pH, EC, TDS, and DO) as independent variables and some cations, anions and heavy metals (Na, Mg, Ca, HCO3, SO4 Cl, Fe, Cd, Cr, Cu and Pb) analysed in the laboratory as dependent variables. The results obtained from the parameters analysed insitu in the field which are cheap to perform and easily affordable were used to check and evaluate and the inter-relationships with some cations, anions and heavy metals. Highly correlated water quality parameters were determined by correlation coefficient (R) values obtained from correlation matrix and related by Regression equations (models). The regression models can be adopted to predict the concentration of these cations, anions and heavy metals before the rigorous laboratory analysis, to serve as a quick check for concentration of most disease-causing pollutants and to save time, money and resources, especially the near absence of AAS for analysing heavy metals in a good number of laboratories. The regression models developed in the study can be used for monitoring the water quality parameters by knowing the concentration of independent parameters obtained in the field alone. There is a relationship between variables which show that one variable actually causes changes in another variable. It was observed that multiple regression models can predict most parameters at 5% level of significance. Significantly positive correlation at 1 and 5% was found between many parameters. This technique studied and calculated the correlation coefficients between various physico-chemical parameters of drinking water and provided an excellent device for the calculation of parameter values within realistic degree of accuracy. The results proved to be easiest, useful, and rapid means for monitoring of water quality with the help of systematic calculations of correlation coefficient. It is recommended to treat groundwater prior to domestic use.
Euler-Bernoulli and Timoshenko Beam Theories Analytical and Numerical Comprehensive Revision
Authors: Ahmed Abdarrhim M. , M. Rifai Abdussalam
Published: February 2022

Obtaining reliable and efficient results of a specified problem solution depends upon understanding the strategy of the method of analysis, which is emanated from all related physical basics of the problem, formulated with master mathematical tools to give its governing mathematical model. These two categories require deep study in a wide range of references and literature in order not only to apply the method professionally, but also to look for improvements, developments, and contributions in the field of the method. Consequently, although Euler-Bernoulli and Timoshenko beam theories are the oldest ones, but surely, they represent a cornerstone for most modern methods in structural analysis; In what follows, a detailed revision of these theories and their applications analytically and in numerical style is presented in a proper and simplified entrance to be able to understand more advanced topics such as thin and thick plate theories. Illustrative examples will be used to show and discuss the methods.
Effect of Hydrological Data on Flood Management in Urban Areas
Authors: Sumiharni . , Afriani Lusmeilia
Published: February 2022

Floods can occur due to rising water levels due to above-normal rainfall, changes in temperature, broken embankments/dams, rapid snowmelt, obstruction of water flow in other places, and putting people at risk of annual disasters due to flooding. The purpose of this study was to obtain a more detailed description of hydrological conditions so that flooding in the Bandar Lampung urban area can be optimally managed or controlled. The method used in flood control research is the analysis of the calculation of the average rainfall in the watershed, and the calculation of the planned discharge. The results of the analysis show that the existing drainage channels that have been carried out for each channel point have dimensions that are not large enough so that they are not sufficient to accommodate water runoff. so that for a 5-year discharge of 28.058 m3/s, the dimensions of the channel are 3 m wide and 2.6 m deep and for a 10-year discharge of 30.609 m3/s, the channel dimensions are 3.1 m wide and 2.7 m deep.
Remote-mount Actuation Control: A Veritable Solution to Unreliability of Anti-surge Control Valves in Gas Compressors
Authors: Ogweda Haruna A. , Okhaifoh Joseph E.
Published: February 2022

This paper presents the design and implementation of a remotely mounted Anti-surge Control Valve (ASCV) for a mixed refrigerant gas compressor deployed in an industrial plant. The traditional ASCV model which is usually self-mounted is plagued by component failures due to stress fatigue from excessive vibrations leading to unreliability of the system. A new system with a remote-mount actuation control system was developed, tested, installed and commissioned in place of the initial self-mount system. Test results showed that average percentage of trips caused by failure of the ASCV dropped from 70% with the initial set-up to 0% with the modified set-up. Hence, a lasting solution to the issue of component fatigue failure from vibrations has been resolved using the highly reliable developed remote-mount actuation control.
Study of Blend of Extracts from Bitter Leaf (Vernonia Amygdalina) Leaves and Banana (Musa Acuminata) Stem as Corrosion Inhibitor of Mild steel in Acidic Medium
Authors: Oyedeko K. F. Oyedeko , Lasisi M. K. , Akinyanju A. S.
Published: February 2022

This study investigates the effect of concentration of different ratio of the leaves extracts Bitter leaf (Vernonia amygdalina) and Banana stem (Musa Acuminata) on corrosion of mild steel in acidic medium using weight loss method at different temperatures (303 K to 323 K) to determine the inhibitory potentials of the extracts. The FTIR and SEM were used to determine the functional groups and morphology of the mild steel respectively during the experiment. The results showed that the inhibition efficiency (IE) increased with an increase in the concentration of the inhibitor (0.1 g/l to 0.5 g/l) but decreased with an increase in temperature (303 K to 323 K) for all the ratios of bitter leaf and banana stem extracts used. The results also showed that the inhibition efficiency increases with an increase in the concentration and shows maximum inhibition efficiency of (80.85%) at optimum concentration (0.5 g/L) The Energy Dispersive X-ray Spectroscopy (EDS) spectra of the mild steel showed that the composition of Carbon and Oxygen increased by 4% and 24.31%, respectively. The increase might probably be attributed to the presence of (CH2) in CH2OH group. The presence of cavities and pits in the Scanning Electronic Microscope (SEM) images of mild steel showed the damages on the mild steel by corrosion medium. The corrosion rate of mild steel in 1M HCl decreased with an increase in the concentration of the extracts for the different concentrations of extracts used, 100% bitter leaf extract (BLE) has the highest corrosion inhibitory efficiency; this was closely followed by 1:4 blends of bitter leaf extract (BLE) and banana extract (BNE). 100 % BNE extract has the lowest inhibitory efficiency for the different ratios of extracts concentration used. Bitter leaves extracts have better inhibitory efficiency than Banana stem extracts.
MENINGKATKAN KEMAMPUAN PUBLIKASI DOSEN MELALUI PENDAMPINGAN PENULISAN KARYA ILMIAH
Authors: Syahlan Syahlan , Matondang Saiful Anwar
Published: February 2022

Abstract. Improving the ability of lecturers' publications through assisting in writing scientific papers. Scientific publications are proof that the research has been carried out and disseminated to be a reference material among experts who have the same field of expertise. The purpose of this study was to determine the increase in the ability of scientific publications of lecturers through training activities and mentoring to lecturers in writing scientific papers. There are two achievements in this training, namely that the lecturer has the skills to write scientific articles and knowledge on how to check the originality of his scientific work (using the plagiarism checker application), which is included in the original category is less than 20% detected plagiarism. This research is a qualitative descriptive study. This activity was carried out at the Deli Husada Health Institute, Deli Tua. The target audience in this activity is the permanent lecturers of the foundation who have served at least one year and have sufficient ability in the ICT field. The result is that this activity shows satisfactory success when compared to the expected performance plan that is 60% of the total number of activity participants. The conclusion is that the assistance activities in writing scientific papers of lecturers can significantly improve the ability of lecturers to produce scientific work that can be published.
Fuentes de la inflación en México, 1989-2000: un análisis multicausal de corrección de errores
Authors: Esquivel Gerardo , Razo Raúl
Published: February 2022

Se analizan los múltiples determinantes de la inflación en México entre 1989 y 2000. Se modela la inflación en función de desviaciones en las relaciones de largo plazo en los mercados monetario, laboral y cambiario. Se obtiene un modelo de corrección de errores en donde el exceso de dinero, la presión salarial y las desviaciones de la paridad del poder de compra son posibles fuentes de inflación. El modelo incluye aspectos inerciales y de política debido a la fijación de ciertos precios. Los resultados muestran que los factores mencionados han contribuido a la reciente dinámica inflacionaria en México.
“Not quite the struggle of normatives”: Belonging and entitlement in Swedish “body activism”
Authors: Sveningsson Malin , Vestberg Alva , Hedström Johanna
Published: February 2022

A “body activism” movement, with roots in fat activism and body positivity, has developed in Sweden during the last decade. As new forms of activism emerge, boundaries and approaches are being negotiated. Who is the movement for? Who can engage in it, and how? Through semi-structured interviews, we seek to understand how young Swedes who follow and engage in “body activism” on social media experience and reflect on the activism, belonging and entitlement, and their own participation. The informants discussed activism in terms of inclusiveness and political potential, where the most accessible activism is also the one ascribed with the least political potential. Entitlement is linked to collective identity, where an active participation requires belonging to the marginalised group. This article highlights the significance of boundary work in movements, where too narrowly drawn boundaries can lead to decreased participation and result in an unexploited potential for social change.
Efficacy of transvaginal ultrasound versus magnetic resonance imaging for preoperative assessment of myometrial invasion in patients with endometrioid endometrial cancer: a prospective comparative study
Authors: Cerovac Anis , Ljuca Dzenita , Arnautalic Lejla , Habek Dubravko , Bogdanovic Gordana , Mustedanagic-Mujanovic Jasminka , Grgic Gordana
Published: February 2022

Background

We compared the accuracy of preoperative transvaginal ultrasound (TVUS) versus magnetic resonance imaging (MRI) for the assessment of myometrial invasion (MI) in patients with endometrial cancer (EC), while definitive histopathological diagnosis served as a reference method.

Patients and methods

Study performed at a single tertiary centre from 2019 to 2021, included women with a histopathological proven EC, hospitalized for scheduled surgery. TVUS and MRI were performed prior to surgical staging for assessment MI, which was estimated using two objective TVUS methods (Gordon’s and Karlsson’s) and MRI. Patients were divided into two groups, after surgery and histopathological assessment of MI: superficial (≤ 50%) and deep (> 50%).

Results

Sixty patients were eligible for the study. According to the reference method, there were 34 (56.7%) cases in the study with MI < 50%, and 26 (43.3%) with MI > 50%. Both objective TVUS methods and MRI showed no statistical significant differences in overall diagnostic performance for the preoperative assessment of MI. The concordance coefficient between both TVUS methods, MRI and histopathology was statistically significant (p < 0.001). Gordon’s method calculating MI reached a positive predictive value (PPV) of 83%, negative predictive value (NPV) of 83%, 77% sensitivity, 88% specificity, and 83% overall accuracy. Karlsson’s method reached PPV of 82%, NPV of 79%, 69% sensitivity, 88% specificity, and 80% overall accuracy. Accordingly, MRI calculating MI reached PPV of 83%, NPV of 97%, 97% sensitivity, 85% specificity, and 90% overall accuracy.

Conclusions

We found that objective TVUS assessment of myometrial invasion was performed with a diagnostic accuracy comparable to that of MRI in women with endometrial cancer.
Analisis Persepsi Konsumen terhadap Minat Beli Online
Authors: Haryanto Elinda
Published: February 2022

The purpose of this research is to analyze the effect of consumer perceptions on web design, consumer perceptions of ease of use, consumer perceptions of trust, consumer perceptions of security, consumer perceptions of customer service, consumer perceptions of electronic word of mouth on purchase intention so that it can help online businesses to increase their income and performance. The total sample was 115 respondents, the majority of whom were 30-40 years old. Data analysis used the SPSS version 25 program. The results showed that there was a positive and significant influence respectively between consumer perceptions of trust, consumer perceptions of security, consumer perceptions of customer service, and consumer perceptions of electronic word of mouth on purchase intention. However, for the variable, the influence of consumer perceptions of web design and consumer perceptions of ease of use on purchase intention, the results are not significant. Online business players are advised to prioritize main attention to aspects of consumer perceptions of trust and security, then continue with consumer perceptions of electronic word of mouth and customer service which overall will influence online purchase intention. Tujuan penelitian ini adalah untuk menganalisis pengaruh persepsi konsumen atas web design, persepsi konsumen atas kemudahan penggunaan, persepsi konsumen atas kepercayaan, persepsi konsumen atas keamanan, persepsi konsumen atas layanan pelanggan, persepsi konsumen atas electronic word of mouth terhadap minat beli secara online, sehingga bisa membantu para pelaku bisnis online untuk lebih meningkatkan pendapatan dan kinerjanya. Total sampel sebanyak 115 responden yang mayoritas berusia 30-40 tahun. Analisis data menggunakan program SPSS versi 25. Hasil penelitian menunjukkan bahwa terdapat pengaruh yang positif dan signifikan masing-masing antara persepsi konsumen atas kepercayaan, persepsi konsumen atas keamanan, persepsi konsumen atas layanan pelanggan dan persepsi konsumen atas electronic word of mouth terhadap minat beli secara online. Namun, untuk variabel pengaruh persepsi konsumen atas web design dan persepsi konsumen atas kemudahan penggunaan terhadap minat beli secara online hasilnya adalah tidak signifikan. Pelaku bisnis online disarankan memprioritaskan perhatian utama terhadap aspek persepsi konsumen atas kepercayaan dan keamanan kemudian dilanjutkan dengan persepsi konsumen atas electronic word of mouth dan layanan pelanggan yang secara keseluruhan akan mempengaruhi minat beli secara online.
Dampak Peraturan Menteri Perdagangan Republik Indonesia Nomor 84 Tahun 2019 tentang Ketentuan Impor Limbah Nonbahan Berbahaya dan Beracun sebagai Bahan Baku Industri terhadap Ekspor Kertas Indonesia (Studi Kasus PT XYZ)
Authors: Sheilda Sheilda , Widoatmodjo Sawidji
Published: February 2022

The purpose of this research is to determine the impact of the Regulation of the Minister of Trade of the Republic of Indonesia Number 84 of 2019 concerning the import of hazardous and toxic non-hazardous waste as industrial raw materials on the export of Brown Paper PT XYZ. This research uses statistical methods on SPSS namely Bivariate Correlation, Simple Regression Analysis, and Wilcoxon Signed-Rank Test for Dependent Population as the main approach to conducting research. The results determine that there is no significant correlation between imported waste paper and the export volume of PT XYZ. The result also determine Imported waste paper has no significant impact on machine consumption, and machine consumption has no significant impact on the exported paper volume of PT XYZ. The main results of this result determine that there is no significant difference in the paper export volume of PT XYZ before and after the enactment of PERMENDAG number 84 of 2019. Tujuan penelitian adalah mengetahui dampak Peraturan Menteri Perdagangan Republik Indonesia Nomor 84 Tahun 2019 tentang ketentuan impor limbah nonbahan berbahaya dan beracun sebagai bahan baku industri terhadap ekspor Brown Paper PT XYZ. Penelitian ini menggunakan metode statistik yaitu Bivariate Correlation, Simple Regression Analysis dan Wilcoxon Signed-Rank Test for Dependent Population sebagai metode pendekatan utama untuk melakukan penelitian. Hasil yang didapatkan menunjukkan bahwa tidak ada korelasi yang signifikan antara wastepaper impor dan volume ekspor PT XYZ. Hasil penelitian juga menunjukkan bahwa wastepaper impor tidak memiliki pengaruh yang signifikan terhadap konsumsi mesin, dan konsumsi mesin tidak berpengaruh secara signifikan terhadap volume ekspor PT XYZ. Hasil yang diperoleh adalah tidak terdapat perbedaan yang signifikan data volume ekspor kertas PT XYZ sebelum dan sesudah diberlakukannya PERMENDAG nomor 84 tahun 2019. Berdasarkan hasil penelitian tersebut beberapa rekomendasi bagi perusahaan.
Pengaruh Waktu Tunggu, Harga dan Kualitas Pelayanan terhadap Kepuasan Konsumen pada Maskapai Penerbangan Air Asia di Terminal 2D Bandara Soekarno Hatta
Authors: Phaksi R. Adam Kesuma
Published: February 2022

The purpose of this study is to determine the effect of waiting time, price, and service quality on customer satisfaction on Air Asia airlines at terminal 2D Soekarno Hatta Airport. Respondents in this study are people who have used the services of the Air Asia airline at terminal 2D Soekarno Hatta airport. Respondents in this study were 100 people, and the sampling technique used was purposive sampling. The data analysis technique uses Multiple Linear Regression using application SPSS version 25 software. The results indicate that waiting time, prices and service quality has an effect on customer satisfaction on Air Asia airlines at terminal 2D Soekarno Hatta airport. Penelitian ini bertujuan untuk mengetahui (1) pengaruh waktu tunggu secara parsial terhadap kepuasan konsumen pada maskapai penerbangan Air Asia di terminal 2D Bandara Soekarno Hatta, (2) pengaruh harga secara parsial terhadap kepuasan konsumen pada maskapai penerbangan Air Asia di terminal 2D Bandara Soekarno Hatta, (3) pengaruh kualitas pelayanan secara parsial terhadap kepuasan konsumen pada maskapai penerbangan Air Asia di terminal 2D Bandara Soekarno Hatta. Penelitian ini menggunakan 100 responden yang telah menggunakan jasa penerbangan maskapai Air Asia di terminal 2D bandara Soekarno Hatta. Penelitian ini menggunakan teknik purposive sampling dalam pengambilan sample. Penelitian ini menggunakan Regresi Linier Berganda dalam analisis data dan menggunakan aplikasi SPSS versi 25. Hasil dari penelitian ini menunjukkan bahwa (1) Adanya pengaruh secara parsial waktu tunggu terhadap kepuasan konsumen pada maskapai penerbangan Air Asia di terminal 2D bandara Soekarno Hatta, (2) Adanya pengaruh secara parsial harga terhadap kepuasan konsumen pada maskapai penerbangan Air Asia di terminal 2D bandara Soekarno Hatta, (3) Adanya pengaruh secara parsial kualitas pelayanan terhadap kepuasan konsumen pada maskapai penerbangan Air Asia di terminal 2D bandara Soekarno Hatta.
Prywatne + dialekt = kapitał
Authors: Deliss Clémentine
Published: February 2022

Esej stanowi próbę namysłu nad specyficznym charakterem produkcji wiedzy w kontekście sztuki współczesnej. Autorka dowodzi w nim znaczenia nieformalnych działań wiedzotwórczych, odnosząc się w autoetnograficzny sposób do własnych projektów edukacyjnych, wydawniczych i kuratorskich (jak Metronome Press czy Future Academy).
Development of a computer program «TimeРесурс»
Authors:   St. Petersburg State Marine Technical University, St. Petersburg, Russia, Maksimova M.A. , Tseytlin N.V. ,   St. Petersburg State Marine Technical University, St. Petersburg, Russia
Published: February 2022

This paper considers the creation of a computer program. This computer program enables to organize the maintenance run-time prediction procedure of the ship’s power equipment on the actual technical state. The paper presents the program interface, as well as the developed software calculation algorithm.
Cerebellar liponeurocytoma with an unusual metastatic CSF spinal seeding
Authors: Hadelsberg Uri Pinchas , Kahanov Lea , Vargas Andres
Published: February 2022

Background:

Cerebellar liponeurocytoma is rare intracranial tumor appearing mostly in the posterior fossa.

Case description:

We hereby report a long follow-up of a case of cerebellar liponeurocytoma in a 60-year-old female. At first, she presented in March of 2010 with the symptoms of hydrocephalus and was found to have a lesion located in the fourth ventricle. The tumor was resected with a small remnant around the brainstem which grew on serial imaging. Due to slow tumor growth, the patient was treated with conformal radiotherapy and was kept under follow-up with both outpatient visits and serial brain imaging. In 2018, due to low back pain and lumbar radicular pain, a new set of images of the spine was obtained which revealed multilevel intradural tumor spinal dissemination. The patient further underwent an open spinal biopsy at the level of L5 which revealed the same pathology of the intracranial tumor. The patient went on to receive total spine irradiation.

Conclusion:

This case report describes a rare metastatic phenomenon to the spinal cord of the exact same pathology and grade of an intracranial cerebellar liponeurocytoma tumor.
Usefulness of endoscope-assisted surgery under exoscopic view in skull base surgery: A technical note
Authors: Yano Shigetoshi , Hiraoka Fumihiro , Morita Hiroya , Kawano Hiroto , Kuwajima Takuto , Yoshida Shin-ichiro , Hama Yoshiaki , Tashiro Noriaki , Hamaguchi Shuko , Aikawa Hiroshi , Go Yoshinori , Kazekawa Kiyoshi
Published: February 2022

Background:

The use of the exoscope has been increasing in the field of neurosurgery, as it can set the visual axis freely, enabling the surgeon to operate in a comfortable posture. Although endoscope-assisted surgery for compensation of insufficient surgical field is useful under the microscope, we report that using an endoscope in exoscopic surgery is safer and more useful.

Methods:

The exoscope used was ORBEYE. All surgical procedures were performed exoscopically from the beginning of the surgery. When endoscopic observation was required during the operation, the endoscope was inserted under observation by an exoscope. The exoscopic screen was 4K-3D and endoscopic screen was 4K-2D, the operation was performed while observing both screens at the same time. The endoscope was held manually or by a mechanical holder.

Results:

Twenty-two cases, including 14 requiring microvascular decompression (MVD) and eight requiring tumor removal, were performed by endoscopic-assisted exoscopic surgery. The endoscope could be inserted safely because its relationship with the surrounding structure could be observed under the exoscope, and the operator could observe both screens without moving the head. Fourteen of 22 patients required additional endoscopic treatment. Satisfactory two-handed operation was performed in 13 cases. Symptomatology disappeared in all cases of MVD, and sufficient tumor resection was achieved.

Conclusion:

Exoscopic surgery provides excellent surgical view that is not inferior to conventional microsurgery. As a large space can be secured between the scope and the surgical field, it is safer and easier to manipulate the endoscope under the exoscope.
PERAN GURU DALAM MENGATASI BULLYING ANTAR SISWA KELASVIII DI SMP LKIA KOTA PONTIANAK
Authors: Mahendra Ryan , Sulistyarini Sulistyarini , Imran Imran
Published: February 2022

AbstractThis thesis aims to find out how the teacher's role in overcoming the problem ofbullying that occurs at SMP LKIA Pontianak City specifically in class VIII. Theresearch method used is a descriptive method with a qualitative research form. Thedata sources for this research are subject teachers as well as homeroom teachers andclass VIII students at SMP LKIA Pontianak City as perpetrators and victims ofbullying. Data collection techniques in this study were through observation, interviewsand documentation, while the data collection tools used were observation guides,interview guides and documentation tools. Data analysis in this study was presented ina qualitative descriptive manner using 6 informants. The results showed that 1. Therole of the teacher as a parent is done by giving a sense of security by preparingstudents before starting the lesson, the teacher still doesn't care about the problemsfaced by the students. 2. The role of the teacher as an example has been carried outwell, such as setting an example in speaking polite language both to the teacher and tofellow friends. 3. The role of the teacher as a security provider is still very lacking,the teacher only gives a sense of security when students have experienced problemswithout any preventive efforts in advance to provide a sense of security for students inthe school environment.Keywords: Teacher's Role, Bullying, Between Students
ANALISIS INTERAKSI EDUKATIF ANTARA GURU DAN PESERTA DIDIK KELAS XII SMAN 1 JAWAI
Authors: Rismunandar Reza , Aminuyati Aminuyati , Okianna Okianna
Published: February 2022

AbstractThis study aims to determine the interaction between teachers and students in economic learning. The method in this research uses descriptive qualitative method with the form of research, namely case study research. The subjects of this study were 30 teachers of class XII SMA Negeri 1 Jawai. The data collection techniques used in this research are direct observation techniques with data collection tools in the form of observation sheets of student learning activities, interviews, and documentation. The indicators seen from economic learning activities (1) attract students' attention (2) motivate students (3) structure of the lesson (4) remind the topics that are mastered with new topics (5) respond to situations (6) convey information (7) explain giving motivation (8) Express personal opinion (9) Focus attention (10) Summarize the main points of the lesson (11) Provide psychological encouragement to students (12) Provide instructions for subsequent lessons (13) Conduct evaluation. Based on the data, the results can be obtained and it can be concluded that the educational interaction between teachers and students is quite good.Keywords: Economic, Educational Interactionslphabetic, Learning
PENGARUH METODE LATIHAN AGILLITY TERHADAP KECEPATAN TENDANGAN SABIT
Authors: Adnadia Fitri Devi , Purnomo Edi , Haetami Mimi
Published: February 2022

AbstractThe purpose of this study was to determine the effect of the Agility training method on the speed of the sickle kick at the Cuyusika Bangau Putih Pencak Silat College. This study used an experimental method with pretest and posttest treatments to determine the difference in numbers before and after being given treatment. The design used in this study was a one group pretest and posttest design. The sample in this study was the pencak silat athletes from the Cuyusika white stork college, totaling 20 athletes. The data analysis technique used is the t test performed with SPSS 21 calculation which has a significance provision and an acceptance or rejection area of 5% or 0.05. The results showed an average pretest result of 0.34 and an average posttest result of 0.29, from an increase in kick speed from the average value of the pretest and posttest an increase of 14.71%". While the calculation of the paired sample T-Test test shows a significant number between the pretest and posttest scores. The significance value (2-tailed) p = 0.000, < 0.05, thus the null hypothesis (HO) in this study was rejected and the alternative hypothesis (Ha) was accepted, because the significance value was smaller than 0.05. So it can be concluded that there is an effect on the agility training method on the speed of the sickle kick at the Cuyusika Bangau Putih Pencak Silat College.Keywords: Speed, Sickle Kick, Pencak Silat
ANALISIS KETERAMPILAN GURU MENGADAKAN VARIASI GAYA MENGAJAR DALAM PEMBELAJARAN SOSIOLOGI KELAS XI IIS DI SMA MUHAMMADIYAH 1 PONTIANAK
Authors: Rosalina Rosalina , Bahari Yohanes , Alhidaya Riama
Published: February 2022

AbstractThis study aims to determine the skills of teachers in implementing variations in teachingstyles in sociology learning in class XI IIS at SMA Muhammadiyah 1 Pontianak. Thisresearch method uses qualitative research methods with descriptive research form. Thedata source of this research is the Sociology subject teacher for Class XI IIS 1 at SMAMuhammadiyah 1 Pontianak. The results showed that the variation in the teaching styleof the sociology teacher at SMA Muhammadiyah 1 Pontianak was very good, but therewere a few short comings made by the teacher regarding voice variations. This goodteaching style variety is shown by the enthusiasm of the students during the learningprocess where the teacher provides a question and answer session and some students areable to correctly answer the questions given by the teacher. Even though during thelearning process there were several obstacles experienced by the teacher, such as anuncontrolled online classroom atmosphere, the teacher was ableto properly implementseveral components of the variation of teaching styles including, concentration ofattention, pointofview, movement and expression.Keywords: Teaching Skills, Teaching Style Variations, Sociology Learning
KOMPETENSI MENGAJAR MAHASISWA PPL PRODI PENDIDIKAN JASMANI FKIP UNTAN TA 2019/ 2020 KOTA PONTIANAK
Authors: Priyadi Retno , Simanjuntak Victor G , Hidasari Fitriana Puspa
Published: February 2022

Abstract The problem in this study is how to teach competence students practice field experience physical education study programs 2019/2020 in junior high school and high school at Pontianak city. This research is a quantitative study with survey method. Data collection techniques by giving questionnaires. The population in this study was 39 schools. Data analysis using a percentage. Based on the results of research that has been done, the result obtained that the teaching competencies of students in the field study program practice physical education 2019/2020 in junior and high school at Pontianak city have 3 categories. First, category is a very good category with a percentage of 89,74%. The second category is a good category is 7,69%. The third category is 2,56% good enough. While students in bad catagories do not exist. This means competence students practice field experience in secondary and middle schools senior high school in Pontianak are classified as good. Keywords : Physical Education, Survey, Teaching Skill
IDENTIFIKASI FAKTOR-FAKTOR KESULITAN BELAJAR PESERTA DIDIK PADA MASA PANDEMI COVID-19 MATA PELAJARAN EKONOMI KELAS XI SMAN 11 PONTIANAK
Authors: Yulianti Annisa , Okianna Okianna , Budiman Jumardi
Published: February 2022

AbstractLearning is one of the obstacles experienced or experienced by a student in thelearning process to be able to achieve good learning outcomes. As for the causesexperienced by students who become believers into 2, namely internal factors(intellectual, etc.) and external (social environment, etc.). This study aims to beable to identify the factors of student learning difficulties during the covid-19pandemic in economics class XI SMAN 11 PONTIANAK. The informants in thisstudy were to find 20 students of class XI as many as 20 people. This type ofresearch is a qualitative description that identifies the factors of studentdifficulties during the covid-19 pandemic. Data collection techniques used in thisstudy added 3 namely observation, interviews and documentation. The results ofthe research and discussion showed that the factors of learning difficulties forstudents during the Covid-19 pandemic in class XI economic subjects wereinternal factors such as lack of interest in learning and understanding of studentsduring learning. While external factors such as media and networks and theallocation of learning time are bold.Keywords : Learning, Covid-19 Pandemic, Factors, Learning Difficulties.
PENGARUH KEPEMIMPINAN TRANSAKSIONAL KEPALA SEKOLAH DAN MOTIVASI KERJA GURU TERHADAP KINERJA GURU DI SMP NEGERISE-KECAMATAN RASAU JAYA
Authors: Diyatmoko Andhika , Aswandi Aswandi , Chiar M.
Published: February 2022

AbstractThis study aims to determine how the performance of teachers, principal transactionalleadership, and teacher work motivation, and how the influence of each and all variablessimultaneously. The general objective of this study was to determine the effect oftransactional leadership and teacher work motivation on teacher performance at SMPNegeri Se, District of Rasau Kubu Raya, Indonesia. This study uses quantitative researchmethods and uses a questionnaire as a data collection tool. The subjects of this studywere 83 junior high school teachers in the district of Rasau Jaya Kubu Raya. Thecharacteristics are a permanent teacher, a minimum of two years of service, civil servantstatus or not, and a bachelor's degree. The results of the study are: (1) the description ofthe teacher's performance is high (35.84%) and the score variation is 174-188; (2) thedescription of transactional leadership is quite good (39.23%) and the score variation is238 - 256; (3) the teacher's work motivation is classified as good (30.19%) and thevariation score is 105-116; (4) transactional leadership has an effect on teacherperformance; (5) school climate has an effect on teacher achievement motivation; and (5)simultaneously transactional leadership and teacher work motivation affect teacherperformance. The conclusion of this study is that the performance of teachers at SMPNegeri Se District of Rasau Jaya Kubu Raya is influenced by the principal's transactionalleadership and teacher work motivation of 43.90%. Keywords: Teaceher Performance, Transactional Leadership, Tecaher WorkMotivation
DESKRIPSI RENCANA PELAKSANAAN PEMBELAJARAN TEMATIK KELAS IV SEKOLAH DASAR NEGERI 42 PONTIANAK KOTA
Authors: Widiawati Fitria , Halidjah Siti , Suparjan Suparjan
Published: February 2022

AbstrakThis study aims to describe the preparation of an online learning implementation planby grade IV teachers at the 42 Pontianak City Elementary School during the Covid-19Pandemic. The research method used is descriptive in the form of qualitative research.The source of the data for this research is the fourth grade teacher of the 42 PontianakCity Elementary School and the data is the online Learning Implementation Plan (RPP)document and the results of interviews with the fourth grade teacher of the 42 PontianakCity State Elementary School. The results of the analysis show that the components ofthe learning implementation plan prepared by the teacher have been guided by the SEKemendikbud Number 14 of 2019 regarding the simplification of the LearningImplementation Plan, but on the completeness and regularity of the componentpreparation there are criteria that are not appropriate for the components of objectives,learning scenarios and learning evaluation. Components that meet the appropriatecriteria are learning media and learning resources. The implementation ofelementsTPACK, HOTS and STEAM of innovative 21st century learning is not described inwriting in the learning step.Keywords: Description, Online Learning Implementation Plan, Themati
IMPLEMENTASI PEMBELAJARAN DARING DALAM MENGEMBANGKAN KARAKTER TANGGUNG JAWAB PESERTA DIDIK PADA PEMBELAJARAN EKONOMI DI SMA KEMALA BHAYANGKARI 1 KUBU RAYA
Authors: Pertiwi Elsha , Sulistyarini Sulistyarini , Okianna Okianna
Published: February 2022

AbstractThis study aims to determine the implementation of online learning in developing thecharacter of students' responsibility in economics subjects at SMAS KemalaBhayangkari 1 Kubu Raya. The research method used is a qualitative research methodwith a descriptive approach. The source of the data for this research is the economicsteacher of class XI IIS 1 and the data is the result of interviews with economics teachersand observation sheets and documentation. The results show that online learningplanning in developing the character of student responsibility made by the teacher forlearning in the form of lesson plans is very maximal and runs smoothly with apercentage of around 70%-80%, and a design for assessment is made, where theteacher plays a very important role in every learning implementation, and for theimplementation is going well for now. So online learning can develop the character ofstudents' responsibility in economic subjects at SMAS Kemala Bhayangkari 1 KubuRaya.Keywords: Online Learning, Student Responsibilities
Stable Membraneless Complex Coacervate Microdroplets
Authors: Gao Shang , Srivastava Samanvaya
Published: February 2022

Complex coacervate microdroplets are membraneless compartments that selectively sequester biological molecules from their surroundings and enhance bioreactions. Yet, their use as protocell models and bioreactors has been limited owing to a lack of feasible strategies to prevent their uncontrolled coalescence. Herein, we introduce an approach to mitigate coalescence of complex coacervate microdroplets using comb polyelectrolytes as stabilizers while retaining the membraneless coacervate-water interfaces, creating membraneless coacervate emulsions with months-long stabilities. Tunability of microdroplet size and stability is achieved by regulation of comb polyelectrolyte concentration and molecular weight. Importantly, the comb polyelectrolyte-stabilized coacervate microdroplets spontaneously sequester and retain proteins over extended periods. Moreover, enhanced catalytic activity of proteins and significant (up to 10-fold) acceleration of bioreactions is achieved in stabilized complex coacervate dispersions, even when stored for up to 48 hours. Our findings are expected to expand the utility of complex coacervate microdroplets as artificial protocells, encapsulants, and bioreactors, and also facilitate their use in pharmaceutical, agricultural, food, and cosmetics formulations.
Obesity and oxidative stress in children and adolescents
Authors: Peresetskaia Olga V. , Kozlova Liudmila V. , Bekezin Vladimir V.
Published: February 2022

The article presents a review of the literature on the role of oxidative stress in the development of metabolic and cardiovascular disorders in children and adolescents against the background of obesity. It has been shown that oxidative stress should be considered as an early marker of metabolic syndrome. Prescribing drugs with antioxidant activity in the complex treatment of obese children with confirmation of oxidative stress is effective. The article also presents the experience of the authors of the effective use of metabolic therapy in obese children.
Violation of the neuro-humoral regulation of the act of urination
Authors: Bozhendaev Timofey L. , Guseva Natalya B. , Goncharov Nikolay P.
Published: February 2022

The pathology of urination in childhood is now a frequent problem with which they turn to a pediatric urologist. Taking into account children's morphofunctional immaturity, the formation of a mature type of urination is associated with the maturation of nerve structures and the formation of hormonal levels. The detrimental effect of the benefits of civilization on the formation and maturation of a child entails functional disorders both in the formation of the nervous system and in hormonal maturation. The body's regulation is based on neuro-humoral control. Impaired coordination and harmonious interaction of this control is carried out in the hypothalamic region, the dysfunction of which determines functional disorders in children.