bluuebunny/crossref_metadata_2025 huggingface dataset:
Numerical Analysis of Keyhole and Weld Pool Behaviors in Ultrasonic-Assisted Plasma Arc Welding Process
Authors: Qiao Junnan , Wu Chuansong , Li Yongfeng
Published: February 2021

The acoustic radiation force driving the plasma jet and the ultrasound reflection at the plasma arc-weld pool interface are considered to modify the formulas of gas shear stress and plasma arc pressure on the anode surface in ultrasonic-assisted plasma arc welding (U-PAW). A transient model taking into account the dynamic changes of heat flux, gas shear stress, and arc pressure on the keyhole wall is developed. The keyhole and weld pool behaviors are numerically simulated to predict the heat transfer and fluid flow in the weld pool and dynamic keyhole evolution process. The model is experimentally validated. The simulation results show that the acoustic radiation force increases the plasma arc velocity, and then increases both the plasma arc pressure and the gas shear stress on the keyhole wall, so that the keyholing capability is enhanced in U-PAW.
Synergistic Effects of Pr6O11 and Co3O4 on Electrical and Microstructure Features of ZnO-BaTiO3 Varistor Ceramics
Authors: Shaifudin Muhamad Syaizwadi , Ghazali Mohd Sabri Mohd , Kamaruzzaman Wan Mohamad Ikhmal Wan Mohamad , Wan Abdullah Wan Rafizah , Kassim Syara , Ismail Nur Quratul Aini , Sa’at Nor Kamilah , Mohd Zaid Mohd Hafiz , Mohd Fekeri Maria Fazira , Matori Khamirul Amin
Published: February 2021

This paper investigated the effects of Pr6O11 and Co3O4 on the electrical properties of ZnO-BaTiO3 varistor ceramics. The Pr6O11 doping has a notable influence on the characteristics of the nonlinear coefficient, varistor voltage, and leakage current where the values varied from 2.29 to 2.69, 12.36 to 68.36 V/mm and 599.33 to 548.16 µA/cm2, respectively. The nonlinear varistor coefficient of 5.50 to 7.15 and the varistor voltage of 7.38 to 8.10 V/mm was also influenced by the use of Co3O4 as a dopant. When the amount of Co3O4 was above 0.5 wt.%, the leakage current increased from 202.41 to 302.71 μA/cm2. The varistor ceramics with 1.5 wt.% Pr6O11 shows good nonlinear electrical performance at higher breakdown voltage and reduced the leakage current of the ceramic materials. Besides, the varistor sample that was doped with 0.5 wt.% Co3O4 was able to enhance the nonlinear electrical properties at low breakdown voltage with a smaller value of leakage current.
Compaction of Cohesive Granular Material: Application to Carbon Paste
Authors: Kansoun Zahraa , Chaouki Hicham , Picard Donald , Lauzon-Gauthier Julien , Alamdari Houshang , Fafard Mario
Published: February 2021

Carbon-like materials such as the anode and the ramming paste play a crucial role in the efficiency of the Hall–Héroult process. The mechanical behavior of these materials during forming processes is complex and still ill-understood. This work aimed to investigate experimentally the mechanical behavior of a carbon paste used in the aluminum industry under different loading conditions. For this purpose, experiments consisting of (1) relaxation tests at different compaction levels, (2) quasi-static cyclic tests at several amplitudes, (3) monotonic compaction tests at varied strain rates, and (4) vibrocompaction tests at different frequencies were carried out. The obtained results highlight some fundamental aspects of the carbon paste behavior such as the strain rate’s effect on the paste compressibility, the hardening-softening behavior under cyclic loadings, the effect of cycling amplitude on the stress state and the paste densification, and the frequency effect on the vibrocompaction process. These results pave the way for the development of reliable rheological models for the modeling and the numerical simulation of carbon pastes forming processes.
The Effect of Stretching on the Crystal Structure and Crystal Orientation of PA510/SiO2 Films
Authors: Cui Lingna , Dong Yu , Liu Yuejun , Fan Shuhong
Published: February 2021

In order to explore the relationship between the microstructure and macroscopic properties of PA510/SiO2 films, the effect of the stretching on the crystal structure and crystal orientation of stretched PA510/SiO2 films was studied. It could be seen from the transmission electron microscopy (TEM) graphs that the layered SiO2 molecules were mainly oriented toward the machine direction (MD) and the dispersion could be improved by stretching. Through wide-angle X-ray scattering (WAXS) analysis, PA510/SiO2 stretched films only contained a γ crystal form. During uniaxial stretching, especially for 1 × 3 film, the γ1(100) crystal form was obviously oriented in the equatorial direction, and the orientation of γ2(004) and γ3(006) crystal forms could be observed in the meridian direction. According to the Herman orientation function, the orientation of the b-axis in the MD increased with the increase of the stretching ratio. It was worth noting that the orientation of the crystal region was more obvious. The addition of SiO2 and the orientation of the crystalline and amorphous regions could improve the barrier properties of the films. The changes in the optical properties of stretched films were affected by the dispersion state of SiO2 and the surface roughness.
Dietary Polyphenols and Non-Alcoholic Fatty Liver Disease
Authors: Abenavoli Ludovico , Larussa Tiziana , Corea Alessandro , Procopio Anna Caterina , Boccuto Luigi , Dallio Marcello , Federico Alessandro , Luzza Francesco
Published: February 2021

Non-alcoholic fatty liver disease (NAFLD), which is emerging as a major public health issue worldwide, is characterized by a wide spectrum of liver disorders, ranging from simple fat accumulation in hepatocytes, also known as steatosis, to non-alcoholic steatohepatitis (NASH) and cirrhosis. At present, the pharmacological treatment of NAFLD is still debated and dietary strategies for the prevention and the treatment of this condition are strongly considered. Polyphenols are a group of plant-derived compounds whose anti-inflammatory and antioxidant properties are associated with a low prevalence of metabolic diseases, including obesity, hypertension, and insulin resistance. Since inflammation and oxidative stress are the main risk factors involved in the pathogenesis of NAFLD, recent studies suggest that the consumption of polyphenol-rich diets is involved in the prevention and treatment of NAFLD. However, few clinical trials are available on human subjects with NAFLD. Here, we reviewed the emerging existing evidence on the potential use of polyphenols to treat NAFLD. After introducing the physiopathology of NAFLD, we focused on the most investigated phenolic compounds in the setting of NAFLD and described their potential benefits, starting from basic science studies to animal models and human trials.
EZ-SEP: Extended Z-SEP Routing Protocol with Hierarchical Clustering Approach for Wireless Heterogeneous Sensor Network
Authors: Nurlan Zhanserik , Zhukabayeva Tamara , Othman Mohamed
Published: February 2021

Wireless sensor networks (WSN) are networks of thousands of nodes installed in a defined physical environment to sense and monitor its state condition. The viability of such a network is directly dependent and limited by the power of batteries supplying the nodes of these networks, which represents a disadvantage of such a network. To improve and extend the life of WSNs, scientists around the world regularly develop various routing protocols that minimize and optimize the energy consumption of sensor network nodes. This article, introduces a new heterogeneous-aware routing protocol well known as Extended Z-SEP Routing Protocol with Hierarchical Clustering Approach for Wireless Heterogeneous Sensor Network or EZ-SEP, where the connection of nodes to a base station (BS) is done via a hybrid method, i.e., a certain amount of nodes communicate with the base station directly, while the remaining ones form a cluster to transfer data. Parameters of the field are unknown, and the field is partitioned into zones depending on the node energy. We reviewed the Z-SEP protocol concerning the election of the cluster head (CH) and its communication with BS and presented a novel extended mechanism for the selection of the CH based on remaining residual energy. In addition, EZ-SEP is weighted up using various estimation schemes such as base station repositioning, altering the field density, and variable nodes energy for comparison with the previous parent algorithm. EZ-SEP was executed and compared to routing protocols such as Z-SEP, SEP, and LEACH. The proposed algorithm performed using the MATLAB R2016b simulator. Simulation results show that our proposed extended version performs better than Z-SEP in the stability period due to an increase in the number of active nodes by 48%, in efficiency of network by the high packet delivery coefficient by 16% and optimizes the average power consumption compared to by 34.
Heat Rate Prediction of Combined Cycle Power Plant Using an Artificial Neural Network (ANN) Method
Authors: Arferiandi Yondha Dwika , Caesarendra Wahyu , Nugraha Herry
Published: February 2021

Heat rate of a combined cycle power plant (CCPP) is a parameter that is typically used to assess how efficient a power plant is. In this paper, the CCPP heat rate was predicted using an artificial neural network (ANN) method to support maintenance people in monitoring the efficiency of the CCPP. The ANN method used fuel gas heat input (P1), CO2 percentage (P2), and power output (P3) as input parameters. Approximately 4322 actual operation data are generated from the digital control system (DCS) in a year. These data were used for ANN training and prediction. Seven parameter variations were developed to find the best parameter variation to predict heat rate. The model with one input parameter predicted heat rate with regression R2 values of 0.925, 0.005, and 0.995 for P1, P2, and P3. Combining two parameters as inputs increased accuracy with regression R2 values of 0.970, 0.994, and 0.984 for P1 + P2, P1 + P3, and P2 + P3, respectively. The ANN model that utilized three parameters as input data had the best prediction heat rate data with a regression R2 value of 0.995.
Vibration Sensor Based on Hollow Biconical Fiber
Authors: Zhang Yingfang , Xu Ben , Wang Dongning , Guo Yun , Chen Min , Chen Weicheng , Guo Penglai , Peng Xiaoling , Li Jianqing
Published: February 2021

A hollow biconical fiber is proposed and experimentally demonstrated for vibration sensing. It is fabricated by creating an air micro-cavity in single-mode fiber, followed by tapering it. Experimental results show that the device is highly sensitive to bending with a sensitivity of 21.30 dB/m−1. When it is exposed to vibration, its transmission loss is modulated periodically, then based on the measured transmission, the vibration frequency can be demodulated accurately. The acoustic vibration testing results show that the proposed device can detect and demodulate the exciting acoustic frequency accurately and distinguish its sound intensity, and the maximum signal to noise ratio (SNR) achieves up to 59 dB. Moreover, cantilever beam testing proves its performance reliable. Additionally, the sensing head has the advantages of a lightweight, compact size (with a total length of less than 250 μm), and insensitivity of temperature. All these features indicate the proposed sensor has a promising potential in the engineering field.
A Knowledge Graph-Based Data Integration Framework Applied to Battery Data Management
Authors: Kalaycı Tahir Emre , Bricelj Bor , Lah Marko , Pichler Franz , Scharrer Matthias K. , Rubeša-Zrim Jelena
Published: February 2021

Today, the automotive and transportation sector is undergoing a transformation process to meet the requirements of sustainable and efficient operations. This transformation mainly reveals itself by electric vehicles, hybrid electric vehicles, and electric vehicle sharing. One significant, and the most expensive, component in electric vehicles is the batteries, and the management of batteries is crucial. It is essential to perform constant monitoring of behavior changes for operational purposes and quickly adjust components and operations to these changes. Thus, to address these challenges, we propose a knowledge graph-based data integration framework for simplifying access and analysis of data accumulated through the operations of vehicles and related transportation systems. The proposed framework aims to enable the effortless analysis and navigation of integrated knowledge and the creation of additional data sets from this knowledge to use during the application of data analysis and machine learning. The knowledge graph serves as a significant component to simplify the extraction, enrichment, exploration, and generation of data in this framework. We have developed it according to the human-centered design, and various roles of the data science and machine learning life cycle can use it. Its main objective is to streamline the exploration and interaction with the integrated data to maximize human productivity. Finally, we present a battery use case to show the feasibility and benefits of the proposed framework. The use case illustrates the usage of the framework to extract knowledge from raw data, navigate and enrich it with additional knowledge, and generate data sets.
Demarketing Tourism for Sustainability: Degrowing Tourism or Moving the Deckchairs on the Titanic?
Authors: Hall C. Michael , Wood Kimberley J.
Published: February 2021

Demarketing is generally recognized as that aspect of marketing that aims at discouraging customers in general or a certain class of customers in particular on either a temporary or permanent basis and has been increasingly posited as a potential tool to degrow tourism and improve its overall sustainability, particularly as a result of so-called overtourism. The paper provides an overview of the various ways in which demarketing has been applied in a tourism context and assesses the relative value of demarketing as a means of contributing to sustainability and degrowing tourism. It is argued that demarketing can make a substantial contribution to degrowing tourism at a local or even regional scale, but that the capacity to shift visitation in space and time also highlights a core weakness with respect to its contribution at other scales. The paper concludes by noting that the concept of degrowth also needs to be best understood as a continuum of which demarketing is only one aspect.
Evaluating Relations between Originality, Efficiency, Conformism and Entrepreneurial Potential of Students in a Fast Changing Business Environment
Authors: Maric Mia , Subotic Mladen , Dudic Branislav , Melovic Boban , Brankovic Natasa , Milisavljevic Stevan
Published: February 2021

The purpose of this paper is to evaluate the relations of originality, efficiency, conformism, and entrepreneurial potential. The sample consisted of a student population from Serbia and Bosnia and Herzegovina as EU candidate countries and from the EU member country, Belgium. Research results can help policy makers receive valuable information on how to improve student attitude towards entrepreneurship. Data was collected from a sample of 1008 university students from these three countries. The Kirton Adaptation Innovation Inventory (KAI), Questionnaire on Entrepreneurial Traits (QET), and The Scale of Entrepreneurial Potential (SEP) were applied in the research in order to obtain data. Canonical correlation analysis revealed a significantly strong relation between originality, efficiency, conformism, and dimensions of the Entrepreneurial Traits model, as well as significant relation to the entrepreneurial potential model. Findings from this study may provide data that could be used to develop and foster the entrepreneurship potential of students and help improve the economy in the region.
Improvisation as Responsible Innovation in Organizations
Authors: Gojny-Zbierowska Milena , Zbierowski Przemysław
Published: February 2021

Improvisation might be seen as a method of responsible innovation in organizations, due to its potential to be more responsive and enable bottom-up initiative. Considering that improvising involves the ability to pivot we argue that enhancing entrepreneurial orientation of existing firms means that their entrepreneurial behaviors can be also displayed in more responsible manner. The paper aims at investigating the influence of improvisation on entrepreneurial orientation (EO). While intuitively improvisation is closely connected to EO, surprisingly, there is very little theoretical and empirical evidence on that relation. The paper closes that gap by empirically investigating the role that improvisation plays in enhancing EO. Building on empirical evidence on the role of improvising in individual entrepreneurship, we use Hmieleski and Corbett’s framework of improvisation as a three-dimensional construct (creativity and bricolage, ability to function and excel under pressure and in stress-filled environments, and spontaneity and persistence) and entrepreneurial orientation as a three-dimensional construct (innovativeness, proactiveness, and risk taking) to investigate the impact of improvisation on individual components of EO. Using the data from 567 senior managers from medium and large organizations we find that improvisation has moderate effect on entrepreneurial orientation. Importantly, different dimensions of improvisation shape components of EO in different way: Creativity and bricolage have positive impact on innovativeness and proactiveness and ability to function and excel under stress has impact on propensity to take risk. The study has implications for the theory of responsible innovation by highlighting the potential of improvising to generate more responsive and stakeholder-involving and, in consequence, more responsible innovation.
UN MODELO DIFUSIÓN-ADVECCIÓN PARA LA PROPAGACIÓN DE Toxo-plasma gondii
Authors: Gandica Irene Duarte
Published: February 2021

La toxoplasmosis es una infección causada por el parásito Toxoplasma gondii, que afecta una amplia población animal y humana; puede causar daños severos cuando es contraída congénitamente o en personas inmuno-supri-midas. Los felinos son los hospederos definitivos y animales de sangre caliente son hospederos intermediarios. Los felinos esparcen ooquistes de T. gondii después de consumir presas (roedores y aves) y agua contaminados. Los humanos se infectan con T. gondii principalmente cuando ingieren carne cruda que contiene quistes tisu-lares viables o cuando ingieren alimentos o agua contaminada con ooquistes de las heces de gatos infectados.Este trabajo presenta un sistema en ecuaciones diferenciales parciales que modela la propagación del parásito a través de gatos. El modelo propuesto es una adaptación de un modelo clásico compartimental tipo SIR al que se le ha agregado dispersión de T. gondii y, adicionalmente, un término advectivo que representa el transporte por agua del parásito, simulando el hipotético caso de que un felino infectado deposite formas infectantes en el suelo o agua y éstas sean transportadas a través del agua, por la lluvia y/o los ríos. El sistema es resuelto numé-ricamente y se presentan resultados de simulaciones con varios campos de velocidades.
UN MÉTODO ESTADÍSTICO PARA ENCONTRAR LAS RELACIONES DE DEPENDENCIA ENTRE UN CONJUNTO DE VARIABLES IRREGULARMENTE MUESTREADAS EN EL TIEMPO
Authors: Roa-Velandia Sonia Yamile , Salcedo-Echeverry Gladys Elena , Momo Fernando Roberto
Published: February 2021

El siguiente artículo propone un método que permite reconstruir una serie de tiempo igualmente espaciada a partir de otra serie que ha sido registrada en tiempos irregulares. Mediante un modelo autorregresivo irre-gular con parámetros variando en el tiempo, para la serie de tiempo desigualmente espaciada, se pueden interpolar nuevos valores para encontrar una serie equiespaciada similar a la original. Luego, el modelo es aplicado a seis series de tiempo irregulares provenientes de un estudio ecológico hecho sobre la columna de agua en la estación de monitoreo Paraná del Canal de Beagle, Tierra de Fuego (Argentina), en el cual se desea conocer las relaciones de interdependencia entre las variables de estudio para interpretar la dinámica del sistema.
ESTIMACIÓN DE LA DURACIÓN DEL CICLO CELULAR Y ESTANDARIZA-CIÓN DEL PROTOCOLO CITOGENÉTICO EN Guadua angustifolia Kunth var. angustifolia (BAMBUSOIDEAE, POACEAE)
Authors: Valencia-Rincón Jenny Carolina , Rodríguez-Castillo Nohra
Published: February 2021

Guadua angustifolia posee importancia económica y ecológica tanto en las regiones donde es nativa como en aquellas donde ha sido introducida razón por la cual se han desarrollado múltiples trabajos de investiga-ción encaminados a determinar su diversidad genética y sus propiedades físico-mecánicas, entre otros, los cuales están dirigidos a programas de conservación, propagación y mejoramiento genético. En el presente trabajo se evaluó el ciclo celular y se estandarizó la técnica citogenética a partir de tejido meristemático radicular. Se determinó la hora mitótica realizando colecta de ápices cada hora durante 24 horas. Por otro lado, se aplicaron técnicas de: Pre-tratamiento, fijación, hidrólisis, tinción y montaje, para la acumulación de células metafásicas a fin de lograr la estandarización del protocolo para estudios citogenéticos. Los resulta-dos indicaron que esta especie posee un ciclo celular corto en el tejido meristemático que no supera las cinco horas y un comportamiento bimodal en cuanto a su actividad mitótica. La estandarización del protocolo para la obtención de células metáfasicas se logró con un pretratamiento con colchicina al 1%, fijación durante 24 horas con Carnoy, hidrólisis doble con HCl al 2N y un coctel enzimático de celulasa, macerozima y pecti-nasa, tinción con orceína acética o DAPI, según fuera el caso y montaje del tejido mediante las técnicas de squash o extendido.
AKI in COVID-19–Associated Multisystem Inflammatory Syndrome in Children (MIS-C)
Authors: Lipton Marissa , Mahajan Ruchi , Kavanagh Catherine , Shen Carol , Batal Ibrahim , Dogra Samriti , Jain Namrata G. , Lin Fangming , Uy Natalie S.
Published: February 2021

Key Points

AKI was a common finding among pediatric patients hospitalized with COVID-19–associated MIS-C.

Older age, increased inflammation, and left ventricular systolic dysfunction may be risk factors for AKI in children with MIS-C.

Although children with MIS-C may develop AKI, our study suggests that most experience mild disease, swift resolution, and promising outcome.

Background

Multisystem inflammatory syndrome in children (MIS-C) is a recently identified entity in association with COVID-19. AKI has been widely reported in patients with primary COVID-19 infection. However, there is a paucity of literature regarding renal injury in MIS-C. We aim to characterize AKI in MIS-C in this cohort identified at a major children's hospital in New York City during the COVID-19 pandemic.

Methods

We conducted a retrospective cohort study of children 0–20 years old admitted to Morgan Stanley Children's Hospital (MSCH) between April 18th and September 23rd, 2020. Patients were included if they met criteria for MIS-C on the basis of CDC guidelines. All patients were evaluated for the presence of AKI, and AKI was staged according to KDIGO criteria.

Results

Of the 57 children who met inclusion criteria, 46% (26 of 57) were found to have AKI. The majority of patients (58%; 15 of 26) were classified as KDIGO stage 1. AKI was present upon admission in 70% of those identified. All patients had resolution of AKI at discharge, with 61% achieving recovery by day 2. One patient required dialysis. When compared with those without renal injury, the AKI cohort was older (P<0.001) and had higher median peak values of CRP (P<0.001), IL-6 (P=0.02), ferritin (P<0.001), and procalcitonin (P=0.02). More patients with AKI had left ventricular systolic dysfunction (P<0.001) and lymphopenia (P=0.01) when compared with those without AKI. No differences in body mass index or sex were found.

Conclusions

Although children with MIS-C may develop AKI, our study suggests that most experience mild disease, swift resolution, and promising outcome. Older age, increased inflammation, and left ventricular systolic dysfunction may be risk factors. Our study highlights the substantial differences in epidemiology and outcomes between AKI associated with pediatric MIS-C versus primary COVID-19 infection.
Penerapan Sistem Pendataan Hak Cipta Content Menggunakan Blockchain
Authors: Lukita Chandra
Published: February 2021

Perkembangan teknologi semakin maju pesat setiap hari membuat manusia membutuhkan informasi secara cepat, tepat dan efisien. Banyak cara menyampaikan informasi tersebut mulai dari media tulisan, gambar dan video dan secara langsung bisa menjadi wadah kreativitas bagi orang yang membuat informasi tersebut, namun ada masalah dari bebas nya penyebarluasan media informasi tersebut. Salah satu nya adalah perihal Hak cipta konten yang dibuat, Banyak konten-konten seperti Gambar, Video, Artwork dan Informasi yang telah dibuat di internet oleh seseorang jatuh ke tangan orang yang tidak bertanggung jawab yang mengaku sebagai pembuat original konten tersebut karena kelalaian si kreator yang asli atau kurang nya informasi awal dari konten tersebut, oleh karena itu diperlukan nya sebuah sistem otomatis yang langsung mendata seluruh konten yang telah di rilis, dan dengan masalah ini digunakanlah teknologi Blockchain untuk mempermudah proses pendataan sistem tersebut. Penelitian ini mengimplementasikan cara-cara prosedur proteksi konten dengan teknologi Blockchain. Dengan langkah analisis data dari artikel yang telah ada lalu menggunakan flowchart menggambarkan cara prosedur proteksi konten tersebut. Terdapat 2 manfaat, yaitu Proteksi konten yang telah dibuat dan mengurangi kecemasan kreator tentang keamanan konten sehingga bisa lebih berkarya membuat lebih banyak konten. Diharapkan penelitian ini bisa membuat suatu rangka sistem pendataan Untuk menyimpan data tentang kepemilikan hak cipta dan originality dari konten yang dibuat sehingga terhindar dari masalah Hak cipta.
A hard look at common law administrative tribunals
Authors: Seidman Guy I.
Published: February 2021

This paper looks at common law administrative tribunals. For legal-historical reasons, these bodies are located at the bottom of the judicial hierarchy or outside of it; its adjudicators often have less training, formal protections and resources than judges of the general court system, yet are required to handle a huge caseload. One difficulty is that administrative tribunals are often not part of the litigation data, skewing statistics. Another difficulty is more substantive: it makes sense for “lower courts” to be assigned cases traditionally considered less legally complicated and overall “less important”; yet common law administrative tribunals often deal with highly complex, socially sensitive legal issues with major potential consequences for litigants’ rights such as bankruptcy, immigration or welfare. Not only should common law administrative tribunals be fully counted in court data, but they should also receive more resources and sufficient judicial oversight to ensure their good operation and litigants’ rights.
A Study on the Efficacy of Deep Reinforcement Learning for Intrusion Detection
Authors: Gülmez Halim Görkem , Angın Pelin
Published: February 2021

The world has witnessed a fast-paced digital transformation in the past decade, giving rise to all-connected environments. While the increasingly widespread availability of networks has benefited many aspects of our lives, providing the necessary infrastructure for smart autonomous systems, it has also created a large cyber attack surface. This has made real-time network intrusion detection a significant component of any computerized system. With the advances in computer hardware architectures with fast, high-volume data processing capabilities and the developments in the field of artificial intelligence, deep learning has emerged as a significant aid for achieving accurate intrusion detection, especially for zero-day attacks. In this paper, we propose a deep reinforcement learning-based approach for network intrusion detection and demonstrate its efficacy using two publicly available intrusion detection datasets, namely NSL-KDD and UNSW-NB15. The experiment results suggest that deep reinforcement learning has significant potential to provide effective intrusion detection in the increasingly complex networks of the future.
Economic Traits Selection and Genetic Parameters of Herd Cows of the Aberdeen-Angus Breed
Authors: Габидулин В.М. , Алимова С.А. , Тагиров Х.Х.
Published: February 2021

Представлены результаты исследования по выявлению хозяйственно-биологических особенностей и селекционно-генетических параметров селекционируемых признаков коров стада абердин-ангусской породы австралийской репродукции. По результатам исследования выявлено, что генетический потенциал продуктивности максимально выражен в возрасте пяти лет (у полновозрастных коров) и перманентно сохраняется до девятилетнего возраста. Рост основных селекционируемых признаков с двух до пяти лет составил по живой массе 15,1%, по молочности – 5,1%. С увеличением возраста маток отмечен стабильный рост показателя «выход деловых телят» на 2,3%. Селекционный дифференциал за три поколения у коров в трёхлетнем возрасте по живой массе составил 23 кг и по молочности – 7,4 кг, коэффициент наследуемости составил 0,42 по живой массе и 0,36 – по молочности коров, эффект селекции по живой массе за поколение составил 9,7 кг, за год – 1,9 кг, по молочности – 2,7 кг и 0,5 кг соответственно. У генотипированных коров по схеме мать-дочь эффект селекции за поколение был выше у гетерозиготных генотипов дочерей, рождённых в Курганской области. Знание и рациональное использование традиционных и новых по ДНК маркерных методов селекции на производстве позволит выявить, а также реализовать генетический резерв животных и управлять селекционным процессом при совершенствовании племенного стада абердин-ангусской породы.

The results of research on detecting of commercial-biological features and selection-genetic parameters of cows’ features under selection of the Australian reproduction Aberdeen-Angus breed herd of are presented. According to the results of the research it was revealed that the genetic potential of productivity is maximally expressed at the age of 5 years (in mature cowbanes) and persists permanently until the age of nine. The growth of the main features under selection from two to five years amounted to 15.1% by live weight, 5.1% by milking capacity. With an increase in the age of the dams a stable increase in the "calf crop percent" by 2.3% was noted. The selection differential for three generations in cows at the age of three years in living weight was 23 kg and in milking capacity – 7.4 kg, the inheritance coefficient was 0.42 in living weight and 0.36 - in milking capacity of cows, the effect of selection by live weight per generation was 9.7 kg, for the year – 1.9 kg, in milking capacity – 2.7 kg and 0.5 kg, respectively. In genotyped cows according to the dam-daughter scheme genetic progress through selection per generation was higher in heterozygous genotypes of daughters born in the Kurgan region. Knowledge and rational use of traditional and new DNA marker methods of selection at the place of production will allow identifying, as well as unlocking the genetic reserve of animals and managing the selection process while improving the breeding herd of the Aberdeen-Angus breed.
Methods of Diagnosing of the Parts Status of the Cylinder-Piston Group of Automotive-Tractor Engines under Operating Conditions
Authors: Антропов Б.С. , Гумённый В.В. , Рудаков А.А. , Генералов В.А.
Published: February 2021

Приведены методы диагностирования состояния деталей цилиндропоршневой группы (ЦПГ) двигателей для использования их непосредственно в эксплуатационных условиях автотракторной техники. Методы просты и достоверны, разработаны на основе учёта комплекса внешних проявлений неисправностей указанных деталей, с минимальным использованием диагностических приборов. Разработанные методы могут быть использованы владельцами технических средств, не имеющими производственной базы для проведения технического обслуживания и ремонта автотракторной техники. Применение разработанных методов диагностирования позволит сократить материальные и трудовые затраты при устранении неисправностей деталей ЦПГ двигателей.

Methods of diagnostics of parts status of cylinder-piston group (CPG) of engines for their use directly in operational conditions of motor-and-tractor equipment are presented. The methods are simple and reliable, developed on the basis of a complex of outward appearances of these component malfunctions with minimal use of diagnostic devices. The developed methods can be used by owners of technical equipment that do not have a production base for maintenance and repair of motor-and-tractor equipment. The use of the developed diagnostic methods will reduce material and labor costs when troubleshooting the parts of the CPG engines.
Impact of Malaysian Green Technology Financial Scheme on Business Performance of Renewable Energy Producers
Authors: Adebiyi Opayemi Olajide , Mohamad Norhidayah , Isa Mohamed Hafiz Md , Samsudin Norsamsinar , Cruz Mia Torres-Dela
Published: February 2021

This paper analyzed the effect of financing on the corporate results of recipient firms. The influence of the internal and external factors is studied and its impact on its company recipients' business performance. Out of the Green Technology Financial Scheme's critical sectors, the research has chosen the energy sector to study. The selected participants are five companies, and one official of the Green Technology Financial Scheme was interviewed. As a result, there is a notable improvement in the financial and non-financial performance of the companies. It identifies the internal factors, focusing on top management commitment, the competitiveness of products and services, and employee involvement in green technology implementation. Moreover, the Green Technology Financial Scheme also caters to human technical expertise in green technology implementation, environmental and social sustainability through green technology implementation and employee development in green technology. The external factors are government regulations and standards, external set objectives and processes by environmental certification agencies, global economy monitoring of green technology, adaption of new technologies and techniques. The Green Technology Financial Scheme has a substantial impact on improving financial performance because it has helped with capital expenditures and shows the companies' improvement in assets, revenues, and profits. The research will show how going green can also be profitable and help their businesses improve their business performance.
A Decision-Making Tool for a Complex Post Enrollment-Based Course Timetabling
Authors: Son Ngo Tung
Published: February 2021

The article describes a new method to construct an enrollment-based course timetable in universities, based on a multi-objective optimization model. The model used mixed-integer and binary variables towards creating a schedule. It satisfies students' preferences for study time, with the number of students in the same class being optimal for training costs while ensuring timetabling business constraints. We use a combination of compromise programming and linear scalarizing to transform many objective functions into single-objective optimization. A scheme of the Genetic Algorithm was developed to solve the proposed model. The proposed method allows approaching several types of multi-objective combinatorial problems. The algorithm was tested by scheduling a study schedule for 3,000 students in the spring semester of 2020 at FPT University, Hanoi, Vietnam. The obtained results show the average students' preference level of 69%. More than 30% of students have a satisfaction level of more than 80% of the timetable after two hours of execution time.
Gamification as a Tool for Enhancing Student Understanding in Business Processes: an Experimental Research
Authors: Wongpinunwatana Nitaya , Maneerattanasak Urairat
Published: February 2021

The aim of this study is to investigate the effect of gamification on the improvement of students’ knowledge in business processes. Special consideration is given to the modulation effect of task complexity on knowledge in business processes. A total of 96 undergraduate students majoring in management information systems at a large public university in Thailand participated in the experiment. This research is based on one-short design to gather the data. The data were analyzed by using a paired-samples t-test and multiple regression. The results of this study are that students’ perceptions of enjoyment in learning, reality of business processes in daily life, engagement in learning, and knowledge in business processes from gamification are higher at posttest stage than pretest stage. In addition, students’ perception of engagement in learning is positively correlated with perceived knowledge in business processes. Furthermore, students’ perceived knowledge in business processes is slightly negatively affected by the modulation effect of perceived task complexity on perceived engagement in learning. However, the perceived enjoyment in learning, reality of business processes in daily life, and the modulation effect of task complexity do not affect perceived knowledge in business processes. This study will help teachers and companies, often facing challenges in business process training, by showing them how to design and use gamification.
Informal Public Spaces: Typology of Coffee Shop Facades in Makassar City
Authors: Haryanto  , Sampebulu Victor , Wikantari Ria , Harisah Afifah
Published: February 2021

Coffee shops have a major influence on the life of the Makassar city community in terms of improving life support. The prevalence and growth of coffee shops continues to be long lasting. This development continues to emerge in various forms or views of various buildings. This research project is a qualitative, phenomenological study using participant observation, open interviews and Bogdan and Taylor model documentation. In addition, the data analysis method is inductive in analyzing the ongoing process of the phenomenon and analyzing the meaning behind the information. The purpose of this study was to determine, identify, verify and analyze the typology of the coffee shop facade in Makassar. The results of this study show that different types of coffee shops in Makassar can be found. There are coffee shops with building facades equipped with convenient and safe infrastructure, interior views with an architectural concept coupled with service facilities presenting a variety of menus. There are also buildings in the form of shop houses with priority building facilities and services offering a variety of different types of menus. Some coffee shops are located in a shop house or a house with simple facilities and services, food and drinks offered as is. Finally, there are semi-permanent or emergency coffee shops with both limited facilities and infrastructure.
A Study of Policy Implementation and Community Participation in the Municipal Solid Waste Management in the Philippines
Authors: Camarillo Mary E.C. , Bellotindos Luzvisminda M.
Published: February 2021

Municipal solid waste (MSW) management has become one of the most pressing environmental concerns of the Philippines at present. Several measures have been implemented to circumvent this issue, including waste management policies stipulated in the Ecological Solid Waste Management Act of 2001. However, the implementation of these policies even at the barangay level has always been a challenge. Hence, this study assessed the compliance of selected barangays in Cebu City, Philippines, specifically to the integrated solid waste management plan based on the 3R’s (reduce, reuse, and recycle). A descriptive quantitative method was utilized in this study. There were 1523 residents and 30 Barangay Environment Officials identified as respondents based on Slovin’s sampling method at a 95% confidence level. The results revealed that there is less extent of compliance in almost all of the SWM policies such as segregation, composting, recycling, incentives, and public information. There is a moderate extent of compliance in terms of collection and transport of solid waste and enforcement of penalties and fines. However, there is non-compliance in terms of facilities for final disposal. Furthermore, the results suggested that effective measures for recycling and composting should be undertaken to encourage higher participation among residents of the barangay. The presence of effective, functional, and marketable materials resource facilities and convenient drop-off locations for recyclable materials ensure final sorting according to its type for composting and recycling.
PELAYANAN KTP ELEKTRONIK DI MASA PANDEMI COVID-19 PADA DINAS KEPENDUDUKAN DAN PENCATATAN SIPIL KOTA BAUBAU
Authors: Mulku Zahari Ahmad Farouq , Septiana Anis Ribcalia , Fait Taslim
Published: February 2021

The purpose of this research is to find out how the service for making electronic ID card during the Covid-19 pandemic at the Department of Population and Civil Registration of Baubau City, as well as what are the inhibiting and supporting factors in providing services to the community. This research uses a descriptive qualitative approach through literature studies. The results show that the Department of Population and Civil Registration of Baubau City has implemented public services according to service standards in making electronic ID card, where services are carried out online using the WhatsApp (WA) application via an Android phone, the public is also free of charge in the manufacturing process, providing facilities and adequate infrastructure in accordance with the Covid-19 health protocol, and placing competent officer to facilitate service delivery. The results of this study also reveal the factors that affect the service of making electronic ID cards at the Department of Population and Civil Registration of Baubau City, during the Covid-19 pandemic, namely: supporting factor where the tools available in providing services are adequate and the human resources competent in their field. Even though there are several technical obstacles, especially from the internet network, not all people have an Android phone and understand the mechanism of online service.
High alumina refractory concretes bonded with calcium aluminate phosphate binder
Authors: Nagorniy A. O.
Published: February 2021

For many industries, further progress is possible provided that more efficient refractories of new types are created.

The refractory concretes bonded by calcium aluminate phosphate binders in comparison with conventional refractories continue to gain in popularity because of the following advantages: quick installation and low construction costs; reduced and simplified furnace maintenance; good thermal-shock resistance; monolithic (no joints); linings of the units done need not be cured to develop initial strength. The longevity of refractory is essentially increasing provided structure is forming under conditions of the service site. That is why developing of new refractory materials must be carried out by means of its structure design. These principles have been realizing in the refractory concretes technology under the limited conditions of refractory lining installation and industrial unit final heat up.

The present paper identifies the phosphate phases responsible for developing mechanical-strength properties of high alumina concretes bonded with calcium aluminate phosphate binders. It sets out the colloid and crystalline phases resulted from interphase interaction that provides the basis for calcium aluminate phosphate binders (suspensions) useful to the refractory industry. The concretes obtained retain their volume integrity after 30 cycles of heating and cooling; can be used for refractory applications > 1700 °С; exhibit sufficient strength of lining 40 MPa.
Alumina silicate glass-ceramic materials for electrical purposes
Authors: Savvova O. V. , Voronov G. K. , Ryabinin S. A. , Fedorenko E. Yu. , Timofeev V. D.
Published: February 2021

The prospects for use of glass-ceramic materials as electrical products were analyzed. The priority of a self-organized macro- and nanostructure formation of the glass-ceramic materials under conditions of low-temperature heat treatment to ensure their high physical and chemical properties was shown. The choice of an alumina silicate system of materials for obtaining high-strength glass-ceramic materials with improved electrical properties was substantiated, taking into account the aspects of energy saving. The technological modes of cooking, forming and heat treatment of glass-ceramic materials were determined.

Resistance, dielectric constant and dielectric loss tangent at 106 Hz were measured using an E6-13A teraometer on a trielectrode system at a temperature of +29 °C and a DE-5000 RLC meter. Electric strength (Em) and cold crushing strength were determined according to GOST 24409-80. Tensile strength according to GOST 32281.1-2013 (EN 1288-1: 2000).

The decisive influence on the electrical properties of glass-ceramic materials the crystalline phases of α-cordierite, β-spodumene or lithium disilicate, as well as the residual glass phase composition has been established. The structure influence of the alumina silicate glass-ceramic materials on the provision of their electrical (tgδ∙104 = 70 ÷ 80; ε = 8.0 ÷ 9.3 (at f = 106 Hz); lg ρv = 12.9 ÷ 15.0 (ρv, Ohm·cm at Т = 20 °C) and mechanical (K1C = 3.15 ÷ 4.3 МPа∙м1/2; σ comp = 630 ÷ 700 МPа, σbend = 300 ÷ 350 МPа; KCU = 4.8 ÷ 5.9 kJ/m2) properties.

It was found that, the defining condition for the developed glass-ceramic materials use as insulating materials under repeated exposure to high-temperature operations is their high breakdown strength Em = 37 ÷ 42 MV/m and thermal shock resistance due to low TCLE (α∙107 = 21.5 ÷ 31.8 deg-1).

The influence of phase composition and structure of the alumina silicate glass-ceramic materials on their electrical and mechanical properties was analyzed. A comparative assessment of the known ceramic and glass-ceramic materials for electrical purposes has made it possible to establish the feasibility of using the developed materials as substrates in the design of a hybrid integrated circuit, vacuum-tight shell and capacitor dielectrics.