bluuebunny/crossref_metadata_2025 huggingface dataset:
Nilai Wasathiyah dan Harakah dalam Hukum Ekonomi Syariah: Sebuah Pendekatan Filosofis Sikap dan Persepsi Bankir terhadap Bunga Bank
Authors: Witro Doli
Published: November 2021

Dalam proses pinjam meminjam, seiring perkembangan zaman manusia dikenalkan dengan sebuah sistem yang bernama perbankan. Kini perbankan terkesan dan dianggap sebagai wadah yang menjalankan praktek riba. Dalam hal ini, hukum Islam sebagai hukum yang mempunyai karakteristik atau watak yang berbeda dengan hukum lainnya diharapkan dapat memberikan solusi atas permasalahan tersebut. Adapun karakteristik yang dimiliki hukum Islam yaitu takamul (sempurna), wasathiyah (seimbang) dan harakah (bergerak). Artikel ini menggunakan pendekatan kualitatif yang bersifat pustaka. Selain itu, artikel ini juga menggunakan pendekatan filosofis. Bahan-bahan yang digunakan dalam penelitian ini berasal dari buku-buku dan jurnal-jurnal. Data dalam artikel ini disajiakan dengan naratif-deskriptif. Teknik analisis yang digunkan adalah reduksi data, penyajian data, dan penarikan kesimpulan. Hasil analisis menunjukkan dalam filsafat hukum ekonomi syariah, nilai wasathiyah diartikan sebagai keseimbangan (pertengahan) dan harakah diartikan sebagai gerakan. Dalam menjawab permasalahan dalam ekonomi kontemporer diperlukan melihat dari sisi wasathiyah  (keseimbangan) antara kedua belah pihak yang melakukan proses transaksi. Dengan menggunakan pendekatan filosofis yang berpedoman nilai wasathiyah dan harakah, terdapat tiga persepsi dan pandangan para bankir terhadap bunga bank yaitu bankir pragmatis, bankir realis-mondernis, dan bankir fundamentalis.
Special Education Teachers’ Experiences on Assessment Activities
Authors: SOLA ÖZGÜÇ Canan , YASSIBAŞ Uğur
Published: November 2021

The purpose of this research is to determine what kinds of processes are covered in assessment activities aimed at assessing students with special needs by special education teachers working in special education schools. Eleven special education teachers working in special education schools at different levels participated in the study. The study employed the phenomenological method, a qualitative research approach. The research data were collected through semi-structured interviews. The collected data were analyzed by content analysis. The themes obtained as a result of the analyses are as follows: “Assessment processes of special education teachers”, “The effect of the type and level of disability on the assessment activities”, “Stakeholders with whom special education teachers collaborate in the assessment process”, and “Special education teachers’ self-development goals on assessment”. The obtained findings are discussed in light of the national and international literature data, and several suggestions for practice are presented.
Assessment of Energy Infrastructure in India: Is it Sustainable …….
Authors: Gupta Sumeet
Published: November 2021

Energy is one of the important building blocks in human development and act as a key factor in determining the economic development of any country. To meeting the demands of a developing nation, Energy requirement in the Form of Coal, Gas, oil and most important Electricity is necessary. This paper attempts to present full picture of Indian energy sector which is growing rapidly. However since, resource allocation and growth in energy supply have failed to meet the demands exerted by the increasing population, rapid urbanization and growing economy. First we identify factor of energy shortage in India, forcing it to rely heavily on imports. Second we develop a multiple linear regression model which includes all independent variables (Population, Inflation, and GDP) to determine energy consumption in India. India is a developing economy. Energy requirement in India are basically electricity, oil, coal, biomass and gas. India’s energy-mix comprises both non-renewable (coal, lignite, petroleum and natural gas) and renewable energy sources (wind, solar, small hydro, biomass, cogeneration biogases etc.).  Based on these model we give conclusion such that which independent variable (population, Inflation and GDP) is more impacting coal, oil, gas and electricity consumption in India as well as Current patterns of energy use and assumptions about future trends in economic activity, we constructed an activity driven model to forecast what would be the natural short term evolution of energy use in India for each end use segment by. Through analysis of current patterns of energy use, drivers of energy use were collected at the sub-sector level. We connected drivers of model with evolution of GDP to determine what would be the impact of economic growth on drivers of energy use. It also includes fuel or technology switching in the forecast.
Vorwort
Authors: Board Editorial
Published: November 2021

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Abses Otak Multipel pada Pasien Dewasa dengan Sindrom Eisenmenger: Laporan Kasus
Authors: Surpa Rio Tasti , Sugianto Paulus , Wahyuning Hadi Deby
Published: November 2021

Pendahuluan: Abses otak merupakan penyebab morbiditas yang signifikan pada pasien dengan penyakit jantung kongenital sianotik seperti sindrom Eisenmenger. Sindrom Eisenmenger ditandai oleh hipertensi paru ireversibel yang berat dan shunting darah dari kanan ke kiri yang merupakan predisposisi terjadinya abses otak. Tulisan ini melaporkan kasus sindrom Eisenmenger dengan komplikasi abses otak. Kasus: Seorang laki-laki 29 tahun datang dengan keluhan kelemahan pada setengah tubuh bagian kanan yang progresif dan pelo yang dirasakan sejak 8 minggu sebelum masuk rumah sakit. Tidak didapatkan keluhan demam, nyeri kepala, muntah, riwayat cedera kepala dan kejang sebelumnya. Pasien ini baru mengetahui memiliki penyakit jantung bawaan sejak usia 16 tahun dan tidak pernah mendapatkan pengobatan. Tanda vital berada dalam batas normal. Saturasi oksigen pada pasien ini antara 88-92%. Pemeriksaan fisik didapatkan hemiparese kanan, kelumpuhan saraf fasial kanan tipe sentral, disartria, murmur sistolik derajat III/VI di intercostal IV parasternal kiri dan didapatkan jari tabuh. Pemeriksaan laboratorium didapatkan peningkatan hemoglobin (Hb 17,2 g/ dL) namun tidak ada peningkatan jumlah darah putih (WBC). Kultur darah dan sensitivitas bakteri negatif. Foto thorax didapatkan gambaran dextrocardia. Echocardiografi menunjukkan gambaran defek septum ventrikel dengan hipertensi paru aliran bidirectional dominan kanan ke kiri. CT scan kepala didapatkan lesi dengan cincin yang menyerap kontras di daerah parietal kiri dengan perivokal edema. MRI kepala didapatkan lesi multipel berkapsul, bentuk oval dengan batas tegas, tepi ireguler, disertai vasogenik edema disekitarnya, tampak cincin menyerap kontras di regio parietal kiri. Pasien ini   membaik signifikan secara neurologis setelah pemberian antibiotik Ceftriaxon dan Metronidazol intravena selama 8 minggu. Kesimpulan: Abses otak multipel dapat merupakan penyulit dari sindrom Eisenmenger pada pasien dewasa dengan penyakit jantung bawaan yang tidak dikoreksi.
Enfoque por competencias (EC) y Evaluación formativa (EF). Caso: Escuela rural
Authors: Quiñones Ramírez Leonela , Zárate - Ruiz Gustavo , Miranda - Aburto Elder , Sosa Celi Paul
Published: November 2021

La presente investigación se realizó con el objetivo de analizar y explicar cómo se desarrolla el enfoque por competencias (EC) y la evaluación formativa (EF) en la escuela rural. Se utilizó el enfoque cualitativo bajo el diseño de estudio de casos utilizando técnica la observación participante. Los resultados evidencian que en el desarrollo del EC y EF se propusieron actividades complejas de tipo interdisciplinar para desarrollar razonamiento, creatividad y pensamiento crítico a través de los procesos de planificación, gestión del aprendizaje y evaluación. Sin embargo, algunos estudiantes no han logrado mejoras en sus aprendizajes, a pesar de aplicarse distintas estrategias y compartir previamente los criterios de evaluación. Se concluyó que para el desarrollo del EC y la EF, en la educación a distancia, es imprescindible gestionar actividades de manera interdisciplinaria, priorizando algunas competencias pues, por las limitaciones de comunicación que existen no fue posible trabajar todas las áreas que se establecen en el currículo. Para ello deben emplearse todos los medios posibles que permitan la retroalimentación del proceso y de los productos finales.
Variables que inciden en la calidad educativa en un contexto de crisis sanitaria en instituciones educativas públicas de Comas
Authors: Menacho-Vargas Isabel , Cavero-Ayvar Hugo Neptali , Orihuela Alvino Myriam Diana , Flores-Mejía Gisella Socorro
Published: November 2021

Estudio cuantitativo, de tipo básica, diseño transeccionales correlaciones – causales, describe relaciones entre dos variables independientes, gestión del conocimiento y el liderazgo pedagógico y la variable dependiente calidad educativa. Tiene nivel explicativo y se ha realizado una síntesis de los aportes teóricos. Se aplicó los instrumentos a 112 docentes de una población de 181 docentes, la razón fue que se utilizó el Google formulario a través de un link que se envió a los docentes con la finalidad que pudieran acceder a las encuestas. Los instrumentos fueron 3 encuestas sobre calidad educativa, gestión del conocimiento y liderazgo pedagógico. Los mismos que cuentan con validez de contenido, para lo cual se utilizó la técnica de juicio de expertos, los mismo que han considerado que los instrumentos eran aplicables. Además, se obtuvo la confiabilidad de los instrumentos, a través del Alpha de Cronbach, en calidad educativa con 22 ítems, un coeficiente de ,928. Gestión del conocimiento con 22 ítems y un coeficiente de ,930 y en liderazgo pedagógico de 20 ítems con ,914, de coeficiente de confiabilidad. Los resultados encuentran un chi cuadrado de 17,311 y p valor de significancia de 0,002, la que está en los valores permitidos, inferiores al 0.05, por lo tanto, se demuestra la gestión del conocimiento y el liderazgo pedagógico incide en la calidad educativa en un contexto de crisis sanitaria en las instituciones educativas del distrito de Comas.
Neurobiological Insights into Twice Exceptionality: Circuits, Cells, and Molecules
Authors: Kelvington Benjamin A. , Nickl-Jockschat Thomas , Abel Ted
Published: November 2021

Twice-exceptional learners face a unique set of challenges arising from the intersection of extraordinary talent and disability. Neurobiology research has the capacity to complement pedagogical research and provide support for twice-exceptional learners. Very few studies have attempted to specifically address the neurobiological underpinnings of twice-exceptionality. However, neurobiologists have built a broad base of knowledge in nervous system function spanning from the level of neural circuits to the molecular basis of behavior. It is known that distinct neural circuits mediate different neural functions, which suggests that 2e learning may result from enhancement in one circuit and disruption in another. Neural circuits are known to adapt and change in response to experience, a cellular process known as neuroplasticity. Plasticity is controlled by a bidirectional connection between the synapse, where neural signals are received, and the nucleus, where regulated gene expression can return to alter synaptic function. Complex molecular mechanisms compose this connection in distinct neural circuits, and genetic alterations in these mechanisms are associated with both memory enhancements and psychiatric disorder. Understanding the consequences of these changes at the molecular, cellular, and circuit levels will provide critical insights into the neurobiological bases of twice-exceptional learning.
First-Line Pembrolizumab Therapy of Non-Small Cell Lung Cancer: Baseline Metabolic Biomarkers Predict Outcomes
Authors: Lang David , Ritzberger Linda , Rambousek Vanessa , Horner Andreas , Wass Romana , Akbari Kaveh , Kaiser Bernhard , Kronbichler Jürgen , Lamprecht Bernd , Gabriel Michael
Published: November 2021

Quantitative biomarkers derived from positron-emission tomography/computed tomography (PET/CT) have been suggested as prognostic variables in immune-checkpoint inhibitor (ICI) treated non-small cell lung cancer (NSCLC). As such data for first-line ICI therapy and especially for chemotherapy-ICI combinations are still scarce, we retrospectively evaluated baseline 18F-FDG-PET/CT of 85 consecutive patients receiving first-line pembrolizumab with chemotherapy (n=70) or as monotherapy (n=15). Maximum and mean standardized uptake value, metabolic tumor volume (MTV), total lesion glycolysis and bone marrow-/ spleen to liver ratio (BLR/SLR) were calculated. Kaplan-Meier analyses and Cox-regression models were used to assess progression-free/overall survival (PFS/OS) and their determinant variables. Multivariate selection for PFS/OS revealed MTV as most relevant PET/CT biomarker (p<0.001). Median PFS/OS were significantly longer in patients with MTV≤70mL versus >70mL (PFS: 10 months (M; 95% confidence interval 4-16) vs. 4M (3-5), p=0.001; OS: not reached vs. 10M (5-15), p=0.004). Disease control rate was 81% vs. 53% for MTV≤/>70mL (p=0.007). BLR ≤1.06 versus >1.06 was associated with better outcomes (PFS: 8M (4-13) vs. 4M (3-6), p=0.034; OS: 19M (12-/) vs. 6M (4-12), p=0.005). In patients with MTV>70mL, concomitant BLR≤1.06 indicated a better prognosis. Higher MTV is associated with inferior PFS/OS in first-line ICI treated NSCLC, with BLR allowing additional risk stratification.
Assessment of the Sustainability of Concrete by Ensuring Performance During Structure Service Life
Authors: Georgescu Dan , Vacareanu Radu , Aldea Alexandru , Apostu Adelina , Arion Cristian , Girboveanu Andrei
Published: November 2021

This article presents a method to assess the sustainability of concrete based on three elements: service life, performance and environmental impact. The method proposes - to achieve similar performance and service life times, regardless of the component materials used, so that the sustainability assessment ultimately depends on the environmental impact criterion. To this end, specific experimental methods are used to determine the performance of concrete in terms of compressive strength and carbonation resistance for concrete cast with two blended cement types. The procedure needed to classify the concrete through carbonation resistance is detailed, in relationship with the performance obtained for compressive strength. The obtained results highlight the concrete formulations to be used to ensure similar performances regardless of the cement type used. In conclusion, the simplicity in the application of the method, which is closely related to the performance approach on concrete durability in the revision proposals of the European standards, is highlighted. The method is also a useful tool to encourage the widespread use in concrete formulation of blended cements with low environmental impact, without reducing the performance or service life time of the constructions.
A Wireless Animal Robot Stimulation System Based on Neuronal Electrical Signal Characteristics
Authors: Yan Rui , Huai Ruituo
Published: November 2021

As a stimulus signal, coded electrical signals can control the motion behavior of animals, which has been widely used in the field of animal robots. In current research, most of the stimulus signals used by researchers are traditional waveforms, such as square waves. To enrich the stimulus waveform, a wireless animal robot stimulation system based on neuronal electrical signal characteristics is presented in this paper. The stimulator uses the CC1101 wireless module to control animal behavior through brain stimulation. The LabVIEW-based graphical user interface(GUI) can manipulate brain stimulation remotely while the stimulator powered by battery. Additionally, The spikes of animals have been simulated by this system through Direct Digital Synthesizer(DDS) algorithm. The GUI enable users to customize the combination of these analog spike signals. The recombined signals are sent to the stimulator through CC1101 as stimulus signals. In vivo experiments conducted on five pigeons verified the efficacy of the stimulation mechanism. The analog spike signal with an amplitude of 3-5V successfully caused the pigeon’s turning behavior. The feasibility of the analog spike signals as stimulus signals was successfully verifified. Increased the diversity of stimulus waveforms in the field of animal robots.
Incidence and Risk Factors for Cerebrovascular-Specific Mortality in Patients with Colorectal Cancer: A Registry-Based Cohort Study Involving 563298 Patients
Authors: Huang Wei , Tang Ming , Chen Yun-Liang , Zhang Tao-Lan , Hong Tao , Li Jing , Lv Guo-Hua , Yan Yiguo , Ouyang Zhi-Hua , Zou Mingxiang
Published: November 2021

Background: Colorectal cancer (CRC) is one of the most prevalent diseases and the second leading cause of death worldwide. However, the relationship between CRC and cerebrovascular-specific mortality (CVSM) remains elusive and less is known about the influencing factors associated with CVSM in CRC. Here, we aimed to analyze the incidence as well as the risk factors of CVSM in CRC. Methods: Patients with a primary CRC diagnosed between 1973 and 2015 were identified from Surveillance Epidemiology and End Results database with follow-up data available until 31 December 2016. Conditional standardized mortality ratios were calculated to compare the incidence of CVSM between CRC patients and the general US population. Univariate and multivariate survival analyses with a competing risk model were used to interrogate the risk factors for CVSM. Results: A total of 563298 CRC individuals were included. The CVSM in CRC patients was significantly higher than the general population in all age subgroups. Among competing causes of death in patients, the cumulative mortality caused by cerebrovascular-specific diseases steadily increased during study period. While age and surgery positively influenced CVSM on both univariate and multivariate analyses, male patients and those who had radiotherapy, chemotherapy, more recent year (2001-2015) of diagnosis as well as multiple primary or distant tumors experienced a lower risk of CVSM. Interpretation: Our data suggest a potential role for CRC in the incidence of CVSM and also identify several significant predictors of CVSM, which may be helpful for risk stratification and therapeutic optimization of cerebrovascular-specific diseases in CRC patients.
Microfluidic Platform combined with a Dark Field Imaging System for Quantification of E. coli Contamination in Water
Authors: Malec Anna , Haiden Christoph , Kokkinis Georgios , Giouroudi Ioanna
Published: November 2021

In this paper, we present a method for detecting and quantifying pathogens in water samples. The method proposes a portable dark field imaging and analysis system for quantifying E. coli concentrations in water after being labeled with magnetic particles. The system utilizes the tracking of moving micro/nano objects close to or below the optical resolution limit confined in small sample volumes (~ 10 µl). In particular, the system analyzes the effect of volumetric changes due to bacteria conjugation to magnetic microparticles (MP) on their Brownian motion while being suspended in liquid buffer solution. The method allows for a simple inexpensive implementation and the possibility to be used as point-of-need testing system. Indeed, a work-ing prototype is demonstrated with the capacity of quantifying E. coli colony forming units (CFU) at a range of 1x10³ - 6x10³ CFU/mL.
Increasing university students' organizational skills during practical application of event management technologies in organizing events
Authors: Anufrieva Natalia Ivanovna , Tsarev Denis Vladimirovich , Gribkova Galina Ivanovna , Medved Eleonora Ilinichna , Kiseleva Olga Igorevna
Published: November 2021

Socio-cultural events are currently gaining increasing relevance and the problem of their organization is becoming urgent both for commercial companies and professionals in this sphere. Today, event management is becoming the leading technology for the organization of events and, notwithstanding the importance of the mastery of theoretical knowledge, only the practical implementation of event management technologies in event organization serves as a prerequisite for the development of organizational skills in professionals in the socio-cultural sphere. The conducted experimental work reveals a major discrepancy in the level of university students’ mastery of organizational skills in the process of theoretical and practical training and proves the effectiveness of the latter in the development of professional mastery of socio-cultural workers. The reasons underlying the development of socio-cultural workers’ organizational skills specifically in the course of practical mastery of event management technologies are identified and comprise contingency on multiple factors, the variability of the socio-cultural situation, and high competition in the market of socio-cultural services.
RESEARCH OF THE EFFICIENCY OF MARINE DIESEL FUEL COOLING SYSTEM ON THE BASIS OF NEW REFRIGERANTS
Authors: Malchevsky V. , Varbanets R.
Published: November 2021

The requirements of the International Maritime Organization, government environmental agencies and other non-governmental groups are aimed at reducing emissions of harmful substances into the environment during the operation of diesel engines. Among these substances, the most dangerous are sulfur oxide (SOx), nitrogen oxide (NOx) and particulate matter (PM). In accordance with the specified requirements, there is an active transition to fuels with ultra-low sulfur content. The use of these fuels in marine diesel engines is associated with a number of difficulties, because these engines are usually designed for operation on fuels with high viscosity and lubricity. The viscosity values for ultra-low sulfur fuels are close to the permitted minimums for diesel engines at normal engine room temperature. The greatest difficulties occur when the viscosity values fall below the specific range when the fuel temperature before the engine increases. For reliable operation of the engine, the fuel temperature must be constantly maintained at a range in which the fuel viscosity will have the required values. For this purpose the engine design provides presence of fuel cooling system with a water cooler and a chiller for heat removal from water. In this paper the efficiency of chiller refrigeration plant was investigated using new perspective refrigerant mixtures R125/R290 and R134a/R290 as working fluids in comparison with basic R134a and R22. The values of composition for both mixtures are chosen such that they are closest to the azeotrope. It is possible for azeotrope mixtures to minimize the temperature difference between heat exchanging medias in condenser and evaporator of refrigeration plant. During the investigation it was revealed that the values of refrigeration coefficient of refrigerating plant when using mixtures as working fluids were somewhat lower when operating on R134a and R22. But the values of volumetric refrigeration capacity with mixtures as working fluids are significantly higher.
MATHEMATICAL MODELING OF THE ENGINE PARAMETERS INFLUENCE ON VEHICLE ACCELERATION DYNAMICS
Authors: Osetrov О.О. , Chuchumenko B. S.
Published: November 2021

The throttle response of a vehicle determines its dynamic properties and is characterized by an acceleration time from 0 to 100 km/h. An experimental study of the influence of vehicle parameters on its throttle response is associated with significant material and labor costs. At the stage of sketching the design of the vehicle, preliminary determination of design parameters and settings, it is rational to use mathematical models. In the existing models of the vehicles movement dynamics, the engine power, as a rule, is set by empirical dependencies and does not take into account the possibility of changing its parameters and characteristics. The paper proposes a mathematical model that combines models of the engine workflow and the dynamics of vehicle acceleration. The mathematical model of the engine workflow is a quasi-stationary thermodynamic model, in which combustion is described by the Vibe equation, and heat transfer with the walls is described by the Woschni equation. To check its adequacy, an experimental study of the VAZ-2108 engine was carried out to obtain external speed, load and control characteristics. Good agreement between the calculated and experimental data is shown. Vehicle acceleration simulation was carried out according to the method of E.A. Chudakov. The parameters of the VAZ-2108 car and the resistance forces during acceleration from 0 to 100 km / h have been determined. It is shown that the car accelerates from 0 to 100 km / h in 18.3 s, which corresponds to the experimental data and indicates the adequacy of the chosen techniques. The influence of changing the parameters and settings of the engine on the dynamics of vehicle acceleration has been investigated. It is shown that in order to achieve better dynamics of motion, the cylinder diameter and compression ratio must be maximized. The ignition timing, intake valve closing angle and excess air ratio have extremes. The efficiency of using a 16-valve cylinder head instead of an 8-valve one is shown. Based on the results of the studies, it was proposed to apply a set of engine parameters, which made it possible to reduce the acceleration time of the VAZ-2108 from 18.3 s to 13.2 s. Thus, the developed mathematical model makes it possible to quantitatively evaluate the influence of engine parameters on the dynamics of vehicle acceleration, to optimize the parameters and settings of the power plant and the vehicle as a whole.
DETERMINATION OF THE COMPONENTS OF THE TOTAL TORQUE NON-UNIFORMITY WHEN DISCONNECTING THE CYLINDERS
Authors: Kolesnikova Т. М. , Zarenbin V.G. , Sakno O. P.
Published: November 2021

The article considers one of the topical directions of increasing fuel economy and reducing the toxicity of exhaust gases, namely, cylinder disconnection of internal combustion engines (ICE) in idling and partial loads. Current internal combustion engines with cylinder disconnection have enough technical solutions to ensure high fuel economy and ecological indicators of the engine working process. Accordingly, such engines require solution of the following tasks: improvement of mass-size indicators, cost reduction and design improvement, increase of reliability, etc. One of the main tasks of transport vehicles is also reducing the level of engine vibrations. This task is especially relevant for internal combustion engines with disconnected cylinders. When cylinders are disconnected, the unevenness of total torque increases from working processes in active cylinders and, as a result, the unevenness of the engine stroke, which affects the dynamic characteristics of the vehicle as a whole. To solve this problem, the general provisions of torsional momentum unevenness of internal combustion engines were considered. Total torsional torque of different engines was processed and data on the unevenness of torsional torque was obtained. The method of investigating the influence of cylinder switching, particularly the number of active cylinders on the unevenness of total torque is developed. The notion of torsional torque change degree with cylinder disconnection is introduced and the equation for its determination depending on the number of active cylinders is proposed. The notion of torsional torque coefficient change at disconnection of cylinders is also introduced. The application of the calculation of a four-cylinder inline engine for the possibility to compare changes in the torsional momentum unevenness when the cylinders are disconnected in the given engine was made. As a result of the calculations it was found that the torque unevenness coefficient at operation of the engine with 3, 2 and 1 cylinders in the average increases in 1,5; 2 and 3 times. The results of calculations were analyzed and histograms for all possible values of the number of active cylinders have been provided.
STAND FOR RESEARCH PARAMETERS OF ELEMENTS OF LUBRICATION SYSTEMS OF HIGH-SPEED INTERNAL COMBUSTION ENGINES
Authors: Kurnosenko D.V. , Savchuk V.P. , Belousov E.V. , Dzygar А.К. , Kotov A.I.
Published: November 2021

The issues of studying the operating parameters of the elements of lubrication systems for high-speed internal combustion engines preceded the creation of the stand. The engine lubrication system D-246.4 was chosen as a prototype. With the help of this stand it became possible to study the lubrication system for the following characteristics: change the performance of the engine oil pump D-246.4, change and control the engine oil temperature, control the pressure drop on the oil filter, control the engine oil flow, throttle oil at the inlet to the oil pump and on the conditional supply line to the friction units, measuring the vacuum of the system on the suction of the oil pump and recording the parameters of the pulsation of the oil pressure generated by the oil pump. To build mathematical models of the components in the lubrication systems of marine internal combustion engines there is a need to determine their operating parameters. In real operating conditions, such measurements cannot be obtained due to the lack of the necessary test equipment (TE) and the possibility of its installation. The authors describe in detail all the components of the stand for studying the parameters of the elements of lubrication systems of high-speed internal combustion engines, their technical characteristics, describes the diagnostic complex, which recorded the results of research, the results of measuring engine oil pressure pulsation. The stand is used to study the operating parameters of the oil pump and filter used for water. Signals are registered using the Autoscanner diagnostic system. The diagnostic complex is a 64-channel oscilloscope that is connected to a personal computer. This stand for studying the operating parameters of the elements of the lubrication system provides sufficient opportunities to simulate the operating conditions of the elements of the supply and purification of oil and register them both visually and with digital sensors and diagnostic system Autoscanner, digital oscilloscopes or other measuring instruments capable of recording and storing the received data.
CONTROL AND OPERATIONS MANAGEMENT OF EXTRACTION PROCESS IN INDUSTRIAL BIOTECHNOLOGY OF BETA-CAROTINE FROM BLAKESLEA TRISPORA
Authors: Belinska A. , Varankina O. , Bliznjuk O. , Masalitina N. , Krichkovska L.
Published: November 2021

The technological parameters, namely temperature and duration of β-carotene extraction process from the biomass of filamentous fungus Blakeslea trispora with vegetable oils of various fatty acid compositions and with various contents of natural antioxidants (refined deodorized sunflower, viso-oleic sunflower, corn and sesame) have been investigated. Statistical models of dependences of β-carotene, as well as analytical numbers, characterizing the content of free fatty acids (acid number) and primary products of lipid oxidation (peroxide number) content, in oil extracts of the specified refined deodorized oils, from temperature and extraction duration have been built.

Rational parameters of β-carotene extraction from Blakeslea trispora biomass with selected extractants (refined deodorized sunflower, high oleic sunflower, corn and sesame oils) have been determined for the extracts technological properties control. It has been proven that the use of these refined deodorized oils as extractants practically does not affect the content of the target product in oil extracts of biomass, but it does affect the analytical numbers of extracts characterizing the content of free fatty acids, peroxides and hydroperoxides. The highest content of free fatty acids in β-carotene containing biomass extraction with sunflower oil has been observed. The minimum content of free fatty acids in extracts with corn and sesame oils using  has been be achieved. The highest content of primary products of lipid oxidation (peroxides and hydroperoxides) during β-carotene containing biomass extraction by sunflower oil has been observed. The minimum content of free fatty acids in extracts with sesame oil using has been achieved.

It is possible to predict β-carotene content, as well as acid and peroxide numbers of oil  extracts from biomass in specified refined deodorized oils, depending on temperature and extraction process duration using the obtained approximation dependences.
Development and Implementation of Curriculum Adaptation During The Covid-19 Pandemic
Authors: Malik Muh Syauqi , Sukiman Sukiman
Published: November 2021

The outbreak of the Covid-19 pandemic has penetrated all people globally, including the Indonesian people who feel that the teaching and learning culture must follow health protocols. Still, the learning process must continue even though it is limited. This study aims to determine curriculum adaptation during the Covid-19 pandemic, teacher strategies, and its impact on MI Salafiyah Tajungsari and SDN Sitiluhur 02. This type of research used qualitative field studies with data sources for school principals, curriculum development teams, and teachers. Methods of data collection using observation, interviews, and documentation. Data analysis includes data reduction, data presentation, concluding, and verification. The technique of testing the validity of the data used triangulation of sources and methods. The research findings showed that MI Salafiyah Tajungsari uses an emergency curriculum with essential materials, while SDN Sitiluhur 02 uses a curriculum that simplifies critical competencies. The learning strategies used by teachers include online and offline. The difference lies offline. Offline at MI Salafiyah Tajungsari held limited face-to-face meetings, while offline at SDN Sitiluhur 02, students carried out the tasks assigned by the teacher and submitted their work to school. The impact of the adaptation curriculum has made the competency target of the school not maximally achieved.
Pengaruh risiko pasar dan tingkat kecukupan modal terhadap profitabilitas pada bank BNI periode 2013 – 2020
Authors: Noer Khoeriah Lidia , Suria Manda Gusganda
Published: November 2021

In the banking industry, every company always try to avoid risk, both inside and outside of the organization business entity. The purpose of this study was to determine whether the bank's market risk (NIM) and capital adequacy ratio (CAR) BNI from 2013 to 2020 had a simultaneous or partial effect on profitability (ROA). The type of this study is quantitative study. The population in this study is BNI’s quarterly financial reports from 2013 to 2020. Up to 30 study samples were obtained. The analysis technique used in this study is multiple linear regression analysis with the help of the IBM SPSS Statistics 25 program. The results showed that: (1) Simultaneously, market risk (NIM) and the level of capital adequacy ratio (CAR) have a significant effect on profitability (ROA), (2) Partially, the results on the market risk variable (NIM) have a significant effect and have a positive relationship on profitability (ROA), (3) Partially, the results on the variable level of capital adequacy ratio (CAR) have a significant effect and have a positive relationship to profitability (ROA).
Pengaruh pembelajaran online berbasis SPADA, lingkungan, dan sarana prasarana terhadap motivasi belajar
Authors: Mas’udatul H Dewi , Sri Hariani Lilik , Walipah Walipah
Published: November 2021

This study discusses online learning based on SPADA, environment, and infrastructure on learning motivation for students of the Faculty of Economics and Business, PGRI Kanjuruhan University, Malang. This study aims to analyze: 1) The effect of SPADA-based online learning, the environment, and infrastructure on learning motivation, 2) the influence of SPADA-based online learning on learning motivation, 3) the influence of the environment on learning motivation, 4) the influence of infrastructure on learning motivation. . This research is a quantitative research. The total population in this study was 330 students consisting of students of the Faculty of Economics and Business class of 2017, Universitas PGRI Kanjuruhan Malang. The sampling technique used is random sampling. The data collection method uses a questionnaire in the form of a Google Form. The validity of the data was obtained through a trial from 30 respondents outside the sample. The data analysis method used multiple linear regression analysis. In this study there are: The influence of SPADA-based online learning, the environment, and infrastructure on learning motivation, the influence of SPADA-based online learning on learning motivation, the influence of the environment on learning motivation, the influence of infrastructure on learning motivation
Peningkatan kinerja operasional perusahaan Jasa Pengurusan Transportasi dalam meningkatkan kepuasan pelanggan
Authors: Somar Enjeli , Suparman Asep , Raga Paulus
Published: November 2021

The purpose of this study is to determine the effect of service quality, port facilities, and container stacking places on operational performance in increasing the level of customer satisfaction. The method used in this study is a quantitative method with descriptive type and the data analysis technique uses Path Analysis. The population in this study were 100 respondents consisting of workers in Jasa Pengurusan Transporasi (JPT) companies and JPT customers. The data collection technique uses a questionnaire that has been tested for validity and reliability. Based on the results of the study, it can be revealed that among the quality of service, port facilities, and container storage places, only JPT customer satisfaction with port facilities affect customer satisfaction, both direct and mediated by operational performance.
Sistem Work From Home, kemampuan manajerial, dan komitmen organisasi perannya pada kinerja
Authors: Iryanti Sindy Andani , Sarwoko Endi , Sahertian Pieter
Published: November 2021

This study aims to determine the effect of managerial ability, commitment, and work from home system on performance. This research uses quantitative research on Bhakti Pertiwi Junior High School teachers with a total sample of 63 people. Data were collected using a questionnaire designed using a 5-point Likert Scale. Managerial ability is the ability of the principal in carrying out management functions. Commitment is measured by affective, continual, and normative commitment. The work from home system is a time flexibility that will affect the discipline, responsibility and creativity of teachers. Data analysis technique using Multiple Linear Regression. The results of the study reveal that teacher performance is influenced by the ability of the principal's manager, also influenced by the level of commitment to the profession. In addition, the implementation of work from home during the Covid-19 pandemic did not cause teacher performance to decrease, it was actually able to improve teacher performance.
EFEKTIVITAS PEMBELAJARAN MATEMATIKA BERBASIS DARING (E-LEARNING) TERHADAP PRESTASI BELAJAR SISWA
Authors: Ayus Ayus Dandi , Gusniwati Gusniwati , Buhaerah Buhaerah
Published: November 2021

Abstrak: Artikel ini bertujuan untuk membahas mengenai efektivitas pembelajaran matematika berbasis daring(E-learning) terhadap prestasi belajar siswa. Jadi perkembangan pendidikan saat ini dipengaruhi oleh pesatnya kemajuan teknologi informasi dan komunikasi. Salah satu teknologi informasi yang ikut berperan dalam dunia pendidikan adalah pembelajaran daring(E-learning). Pembelajaran daring(E-learning) berfungsi sebagai penghubung antar pendidik dengan siswa dengan menggunakan elektronik dan jaringan internet yang dapat diakses kapan saja dan dimana saja. Media daring yang digunakan adalah bermacam-macam (whatsApp,Google Classroom,Youtube). Tujuan dari penelitian ini adalah untuk menganalisis efektivitas pembelajaran matematika berbasis daring(E-learning). Metode yang dikumpulkan dalam mengumpulkan data adalah memberikan evaluasi kepada narasumber yaitu siswa kelas XI SMA melalui WhatsApp dan Google Classroom.
Investigation of Increasing the Tooth Surface Quality of Curvilinear Involute Gears
Authors: uzun mahir , TEMİZ Şemsettin , ÇETİN Mehmet Sinan
Published: November 2021

It is not possible to increase the surface quality of non-standard gears with curved involute tooth profile produced by 5-axis CNC milling method with standard gear grinding methods due to curved tooth profiles. In this study, the possibilities of increasing the surface quality of non-standard gears with curved involute tooth profile were investigated in order to expand their use in the industry. For this purpose, the target model was produced by using the mathematical parametric equations of the involute curve that forms the profile form of a tooth in the CAD environment. By using the target model, manufacturing codes were derived in the CAM environment, and gears with curved involute tooth profile were produced on a 5-axis CNC machine. Then these gears; The possibilities of increasing the tooth profile surface quality were investigated by applying four different methods, such as precision finishing, co-running in oil, co-running in oil with SiC added, and grinding on a 5-axis CNC machine with a finger grinding tip specially produced for gears. In the oil co-run method, considering the running-in stage for each method, the gears were tested with the help of the designed gearbox, at a revolution speed of 670 rpm, by turning a total of 150,000 turns in 6 periods of 25,000 turns. In the co-start method, the gears at the beginning of the test and at the end of each period; thermal records, noise analysis, photographic records, surface roughness values (Ra, Rz) were measured. In the co-operation methods applied to increase the surface quality, the tooth surface of the gears at the beginning of the test and at the end of each period; photographic records, surface roughness values (Ra, Rz) were measured, noise levels were measured during the test and thermal records were taken. Similarly, in precision machining and grinding methods, photographic recordings of the tooth surface were taken, surface roughness (Ra, Rz) was measured, micrographs were taken in SEM and analyzed after the process. As a result of the tests and analyzes carried out; It has been observed that the surface quality is the best in the process performed using a specially produced finger grinding tip and a CNC grinding machine.
A Fine Spatial Resolution Modeling of Urban Carbon Emissions: A Case Study of Shanghai, China
Authors: Huang Cheng , Zhuang Qianlai , Meng Xing , Zhu Peng , Han Ji , Huang Lingfang
Published: November 2021

Quantification of fossil fuel carbon dioxide emissions (CEs) at fine space and time resolution is a critical need in climate change research and carbon cycle. Quantifying changes in spatiotemporal patterns of urban CEs is important to understand carbon cycle and development carbon reduction strategies. However, fine resolution spatial data of CEs deficient. This study quantified CEs from 15 types of energy sources, including residential, tertiary, and industrial sectors in Shanghai. Additionally, we mapped the CEs for the three sectors using point of interest data and web crawler technology, which is different from traditional methods. At a resolution of 30 m, the improved CEs data has a higher spatial resolution than existing studies. In addition, the method of this study is better than traditional methods with details and heterogeneity of CEs, the CEs distribution close to reality. The results indicated that there was a consistent increase in CEs during 2000–2015, with a low rate of increase during 2009–2015. The intensity of CEs increased significantly in the outskirts of the city, mainly due to industrial transfer. Moreover, intensity of CEs reduced in city center. Decoupling between the economic development and CEs in the city was observed during in 2000–2015 owing to technological progress and reduction in CEs intensity.
A locally Active Discrete Memristor Model and Its Application in a Hyperchaotic Map
Authors: Ma Minglin , Yang Yang , Qiu Zhicheng , Peng Yuexi , Sun Yichuang , Li Zhijun , Wang Mengjiao
Published: November 2021

The continuous memristor is a popular topic of research in recent years, however, there is rare discussion about the discrete memristor model, especially the locally active discrete memristor model. This paper proposes a locally active discrete memristor model for the first time and proves the three fingerprints characteristics of this model according to the definition of generalized memristor. A novel hyperchaotic map is constructed by coupling the discrete memristor with a two-dimensional generalized square map. The dynamical behaviors are analyzed with attractor phase diagram, bifurcation diagram, Lyapunov exponent spectrum, and dynamic behavior distribution diagram. Numerical simulation analysis shows that there is significant improvement in the hyperchaotic area, the quasi-periodic area and the chaotic complexity of the two-dimensional map when applying the locally active discrete memristor. In addition, antimonotonicity and transient chaos behaviors of system are reported. In particular, the coexisting attractors can be observed in this discrete memristive system, resulting from the different initial values of the memristor. Results of theoretical analysis are well verified with hardware experimental measurements. This paper lays a great foundation for future analysis and engineering application of the discrete memristor and relevant the study of other hyperchaotic maps.
The Insulin Sensitivity Mcauley Index (Mcai) is Associated with 40-Year Cancer Mortality in a Cohort of Men and Women Free of Diabetes at Baseline
Authors: Moshkovits Yonatan , Rott David , Chetrit Angela , Dankner Rachel
Published: November 2021

Background:The association between insulin resistance and cancer mortality is not fully explored. We investigated the association between several insulin sensitivity indices (ISIs) and cancer mortality in a cohort of adult men and women free of diabetes. We hypothesized that higher insulin resistance (Q1 of the Mcauley index (MCAi), calculated by fasting insulin and triglycerides, and Q4 of the Homeostatic Model Assessment (HOMA), calculated by fasting plasma glucose and insulin) will be associated with greater cancer mortality risk.Methods: A cohort of 1612 men and women free of diabetes during baseline were followed since 1979 through 2016 for cause specific mortality as part of the Israel study on Glucose Intolerance, Obesity and Hypertension (GOH). Results: Mean age at baseline was 51.5 ± 8.0 years, 804 (49.9%) were males, and 871 (54.0%) had prediabetes. Mean follow-up was 36.7±0.2 years and 47,191 person years were accrued. Cumulative incidence analysis using Cox proportional hazard model and competing risks analysis adjusted for age, sex, country of origin, BMI, blood pressure, total cholesterol, smoking and glycemic status (table 2), revealed an increased risk for cancer death, sub-distribution HR=1.4 (95% CI: 1.1-1.9, p=0.02) for individuals in the lower quartile of MCAi (Q1), denoting higher insulin resistance, compared with the upper quartiles (Q2-4). No statistically significant association was observed between the other insulin resistance surrogates and cancer death.Conclusion: The MCAi was found to independently associate with an increased risk for cancer mortality in adult men and women free of diabetes. The MCAi may be considered as a long-term prognostic biomarker in diabetes-free adults.