bluuebunny/crossref_metadata_2025 huggingface dataset:
Study of the Wear Resistance of Conductive Poly Lactic Acid Monofilament 3D Printed onto Polyethylene Terephthalate Woven Materials
Authors: Eutionnat-Diffo Prisca Aude , Chen Yan , Guan Jinping , Cayla Aurelie , Campagne Christine , Nierstrasz Vincent
Published: May 2020

Wear resistance of conductive Poly Lactic Acid monofilament 3D printed onto textiles, through Fused Deposition Modeling (FDM) process and their electrical conductivity after abrasion are important to consider in the development of smart textiles with preserved mechanical and electrical properties. The study aims at investigating the weight loss after abrasion and end point of such materials, understanding the influence of the textile properties and 3D printing process parameters and studying the impact of the abrasion process on the electrical conductivity property of the 3D printed conductive polymers onto textiles. The effects of the 3D printing process and the printing parameters on the structural properties of textiles, such as the thickness of the conductive Poly Lactic Acid (PLA) 3D printed onto polyethylene terephthalate (PET) textile and the average pore sizes of its surface are also investigated. Findings demonstrate that the textile properties, such as the pattern and the process settings, for instance, the printing bed temperature, impact significantly the abrasion resistance of 3D printed conductive Poly Lactic Acid (PLA) onto PET woven textiles. Due to the higher capacity of the surface structure and stronger fiber-to-fiber cohesion, the 3D printed conductive polymer deposited onto textiles through Fused Deposition Modeling process have a higher abrasion resistance and lower weight loss after abrasion compared to the original fabrics. After printing the mean pore size, localized at the surface of the 3D-printed PLA onto PET textiles, is five to eight times smaller than the one of the pores localized at the surface of the PET fabrics prior to 3D printing. Finally, the abrasion process did considerably impact the electrical conductivity of 3D printed conductive PLA onto PET fabric.
Thermal Sources of Errors in Surface Texture Imaging
Authors: Grochalski Karol , Wieczorowski Michał , Pawlus Paweł , H’Roura Jihad
Published: May 2020

This paper presents the influence of thermal phenomena on areal measurements of surface topography using contact profilometers. The research concerned measurements under controlled and variable environmental conditions. The influence of internal heat sources from profilometer drives and their electronic components was analyzed. For this purpose, a thermal chamber was designed and built. Its task was to maintain and control environmental conditions and, at the same time, separate the profilometer from external disturbances. Heat sources and temperature values for elements and systems were determined. It further enabled for the calculation of the displacements in axes as a function of temperature. The largest displacement in the probe due to internal heat sources for the considered cases occurred in the X-axis direction. Its value reached 16.2 μm. However, the displacement in the probe in the Z-axis direction had the greatest impact on the measured surface topography. These displacements for a thermally unstable profilometer reached 7.9 μm in Z, causing results even 90% greater than in the case of a device without such problems. The time after which a proper topography measurement can be started was also determined basing on obtained data. This time for tested profilometers was between 6 and 12 h. It was found that performing thermal stabilization of the profilometer significantly reduced surface irregularity errors. The stabilization time should be determined individually for a specific type of device.
Effects of Sintering Conditions on Structures and Properties of Sintered Tungsten Heavy Alloy
Authors: Kunčická Lenka , Kocich Radim , Klečková Zuzana
Published: May 2020

Probably the most advantageous fabrication technology of tungsten heavy alloys enabling the achievement of required performance combines methods of powder metallurgy and processing by intensive plastic deformation. Since the selected processing conditions applied for each individual processing step affect the final structures and properties of the alloys, their optimization is of the utmost importance. This study deals with thorough investigations of the effects of sintering temperature, sintering time, and subsequent quenching in water on the structures and mechanical properties of a 93W6Ni1Co tungsten heavy alloy. The results showed that sintering at temperatures of or above 1525 °C leads to formation of structures featuring W agglomerates surrounded by the NiCo matrix. The sintering time has non-negligible effects on the microhardness of the sintered samples as it affects the diffusion and structure softening phenomena. Implementation of quenching to the processing technology results in excellent plasticity of the green sintered and quenched pieces of almost 20%, while maintaining the strength of more than 1000 MPa.
Prediction of the Long-Term Performance and Durability of GFRP Bars under the Combined Effect of a Sustained Load and Severe Environments
Authors: Tu Jianwei , Xie Hua , Gao Kui
Published: May 2020

With the continuous development of production technology, the performance of glass-fiber-reinforced polymer (GFRP) bars is also changing, and some design codes are no longer applicable to new materials based on previous research results. In this study, a series of durability tests were carried out on a new generation of GFRP bars in laboratory-simulated seawater and a concrete environment under different temperatures and sustained loads. The durability performance of GFRP bars was investigated by analysing the residual tensile properties. The degradation mechanism of GFRP bars was also analysed by scanning electronic microscopy (SEM). Furthermore, the long-term performance of GFRP bars exposed to concrete pore solution under different stress levels was predicted using Arrhenius theory. The research results show that the degradation rate of GFRP bars was increased significantly at a 40% stress level. By comparing the test results, design limits, and other scholars’ research results, it is demonstrated that the GFRP bars used in this test have a good durability performance. It is found that the main degradation mechanism of the GFRP bars is the debonding at the fiber-matrix interface. In the range test, the effects of a 20% stress level on the degradation of GFRP bars were not obvious. However, the long-term performance prediction results show that when the exposure time was long enough, the degradation processes were accelerated by a 20% stress level.
Microstructural Study of a Mg–Zn–Zr Alloy Hot Compressed at a High Strain Rate
Authors: You Jing , Huang Yingjie , Liu Chuming , Zhan Hongyi , Huang Lixin , Zeng Guang
Published: May 2020

Understanding the correlation of plasticity with deformation and dynamic recrystallization (DRX) behaviors, in magnesium (Mg) alloys deformed under high-strain-rate conditions, is increasingly important for wrought Mg processing. In the present study, a ZK30 (Mg-2.61%Zn-0.66%Zr by weight percent (wt.%)) alloy in the as-forged state was hot compressed to various strain levels at a temperature of 350 °C and a strain rate of 10 s−1. Heterogeneous deformation and dynamic recrystallization (DRX) behaviors of the complicated microstructures in the deformed samples were analyzed via a grain-partitioning approach based on intra-grain misorientation analysis from electron back-scattered diffraction (EBSD). The ZK30 alloy showed excellent formability, remaining intact at a true strain of −1.11. Continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX) via grain boundary corrugation/bulging are the dominant mechanisms for the relaxation of strain energy during hot compression. Initial Zr-rich coarse grains undertook a significant portion of the plastic strain as the compression progressed, reflected by the increased misorientations within their interior and marked change in their aspect ratios. The results indicate that the excellent plasticity of the as-forged ZK30 alloy can be attributed to the operative CDRX mechanisms and the reduced deformation anisotropy of Zr-rich coarse grains containing Zn–Zr nano–precipitates.
Numerical-Experimental Correlation of Dynamic Test of a Honeycomb Impact Attenuator for a Formula SAE Vehicle
Authors: Vettorello Andrea , Campo Giuseppe A. , Goldoni Giovanni , Giacalone Mauro
Published: May 2020

A honeycomb impact attenuator for a Formula SAE (FSAE) prototype vehicle is examined using both experimental and numerical analyses. Two common FSAE impact attenuators were compared to a new design concept, combining four layers of hexagonal honeycomb. The comparison aimed to obtain the combination of the lowest mass and highest energy absorption. The attenuator must comply with both the FSAE championship rules and further internally-defined design constraints. The work continues addressing the numerical-experimental correlation of the applied materials. Finally, the finite element models for virtual crash testing are presented and were validated through the experimental tests.
Effect of Heterogeneous Nucleation on Removal of Arsenic from Molten Steel by Rare Earth Addition
Authors: Wang Hongpo , Yu Peng , Jiang Silu , Wang Yu
Published: May 2020

Cleanliness control is an eternal theme to improve the properties of steel products. With the increasing recycling rates of scrap steel, the removal and stabilization of residual elements have become a vital issue for improving the performance of steel products. Thermodynamic and mismatch calculations plus laboratory experiments were carried out to study the heterogeneous nucleation phenomena of inclusions when lanthanum was employed to remove arsenic from molten steel and stabilize arsenic in solid steel. The effect of heterogeneous nucleation on the mechanism of arsenic removal was discussed. A series of heterogeneous nucleation phenomena of inclusions in the La-O-S-As system were discovered, and the heterogeneous nucleation among the inclusions turned out to be selective. As the vital product of arsenic removal, La-S-As is most likely to generate with LaS as heterogeneous nucleation cores, and its possible chemical formula turned out to be 3LaS⸱LaAs. Sulfur plays an essential role in removing arsenic from molten steel by adding lanthanum. It needs to control the initial sulfur content in an appropriate range, because the high initial content causes too much loss of rare earth, and the low initial content cannot produce LaS and La-S-As.
Hepatitis E Virus Seroprevalence and Associated Risk Factors in Apparently Healthy Individuals from Osun State, Nigeria
Authors: Osundare Folakemi Abiodun , Klink Patrycja , Majer Catharina , Akanbi Olusola Aanuoluwapo , Wang Bo , Faber Mirko , Harms Dominik , Bock C.-Thomas , Opaleye Oladele Oluyinka
Published: May 2020

Hepatitis E virus (HEV) infection is a major public health concern in low-income countries, yet incidence and prevalence estimates are often lacking. Serum (n = 653) and faecal (n = 150) samples were collected from apparently healthy individuals using convenience sampling technique in six communities (Ore, Oke-Osun, Osogbo, Ede, Esa-Odo, and Iperindo) from Osun State, Nigeria. Serum samples were analysed for total anti-HEV IgG/IgM and anti-HEV IgM using commercially available HEV ELISA kits. Total anti-HEV positive serum and all stool samples were analysed for HEV RNA by RT-PCR. Overall, 15.0% (n = 98/653) and 3.8% (n = 25/653) of the serum samples were positive for anti-HEV total and IgM antibodies, respectively. Total anti-HEV and IgM in Ore, Oke-Osun, Osogbo, Ede, Esa-Odo, and Iperindo was 21.0% (n = 13/62) and 3.2% (n = 2/62), 19.4% (n = 20/103) and 6.8% (n = 7/103), 11.4% (n = 12/105) and 2.9% (n = 3/105), 8.0% (n = 16/199) and 1.5% (n = 3/199), 22.0% (n = 22/100) and 10.0% (n = 10/100), and 17.9% (n = 15/84) and 0.0% (n = 0/84), respectively. All samples (stool and serum) were HEV RNA negative. Anti-HEV seroprevalence was associated with rural location, increasing age, alcohol consumption, and rearing of animals. This study demonstrated a high anti-HEV seroprevalence in Osun State, indicating the need to implement surveillance and asses the hepatitis E burden in Nigeria.
Infectivity and Drug Susceptibility Profiling of Different Leishmania-Host Cell Combinations
Authors: Baek Kyung-Hwa , Piel Laura , Rosazza Thibault , Prina Eric , Späth Gerald F. , No Joo Hwan
Published: May 2020

Protozoan parasites of the genus Leishmania are the causative agents of leishmaniasis, a spectrum of a disease that threatens public health worldwide. Although next-generation therapeutics are urgently needed, the early stage of the drug discovery process is hampered by very low hit rates from intracellular Leishmania phenotypic high-throughput screenings. Designing and applying a physiologically relevant in vitro assay is therefore in high demand. In this study, we characterized the infectivity, morphology, and drug susceptibility of different Leishmania and host cell infection combinations. Primary bone marrow-derived macrophage (BMDM) and differentiated human acute monocytic leukemia (THP-1) cells were infected with amastigote or promastigote forms of Leishmania amazonensis and Leishmania donovani. Regardless of host cell types, amastigotes were generally well phagocytosed and showed high infectivity, whereas promastigotes, especially those of L. donovani, had predominantly remained in the extracellular space. In the drug susceptibility test, miltefosine and sodium stibogluconate (SSG) showed varying ranges of activity with 14 and >10-fold differences in susceptibility, depending on the host-parasite pairs, indicating the importance of assay conditions for evaluating antileishmanial activity. Overall, our results suggest that combinations of Leishmania species, infection forms, and host cells must be carefully optimized to evaluate the activity of potential therapeutic compounds against Leishmania.
“One Knows the Tree by the Fruit That It Bears:” Mircea Eliade’s Influence on Current Far-Right Ideology
Authors: Weitzman Mark
Published: May 2020

Since the notorious Unite the Right rally in Charlottesville in 2017, the alt-right has surged into prominence as the most visible expression of right-wing extremism. While most analysts have focused on the political aspect of the movement, my article will explore the spiritual and religious roots and connections of the movement. In particular, I will focus on how Mircea Eliade, one of the most prominent figures in the academic study of the history of religion in the late 20th century, is viewed by many current extreme right thinkers. Drawing on the writings of some of the leading theoreticians and inspirations of the alt-right such as Julius Evola, Alain de Benoist, Aleksandr Dugin and Richard Spencer, as well as the prominent extreme right publishing houses, Arktos and Counter-Currents, I will show how Eliade’s extremely controversial and problematic past is seen as an intellectual and even spiritual source for these leading figures.
Lightweight Proof of Game (LPoG): A Proof of Work (PoW)’s Extended Lightweight Consensus Algorithm for Wearable Kidneys
Authors: Kumar Adarsh , Kumar Sharma Deepak , Nayyar Anand , Singh Saurabh , Yoon Byungun
Published: May 2020

In healthcare, interoperability is widely adopted in the case of cross-departmental or specialization cases. As the human body demands multiple specialized and cross-disciplined medical experiments, interoperability of business entities like different departments, different specializations, the involvement of legal and government monitoring issues etc. are not sufficient to reduce the active medical cases. A patient-centric system with high capability to collect, retrieve, store or exchange data is the demand for present and future times. Such data-centric health processes would bring automated patient medication, or patient self-driven trusted and high satisfaction capabilities. However, data-centric processes are having a huge set of challenges such as security, technology, governance, adoption, deployment, integration etc. This work has explored the feasibility to integrate resource-constrained devices-based wearable kidney systems in the Industry 4.0 network and facilitates data collection, liquidity, storage, retrieval and exchange systems. Thereafter, a Healthcare 4.0 processes-based wearable kidney system is proposed that is having the blockchain technology advantages. Further, game theory-based consensus algorithms are proposed for resource-constrained devices in the kidney system. The overall system design would bring an example for the transition from the specialization or departmental-centric approach to data and patient-centric approach that would bring more transparency, trust and healthy practices in the healthcare sector. Results show a variation of 0.10 million GH/s to 0.18 million GH/s hash rate for the proposed approach. The chances of a majority attack in the proposed scheme are statistically proved to be minimum. Further Average Packet Delivery Rate (ADPR) lies between 95% to 97%, approximately, without the presence of outliers. In the presence of outliers, network performance decreases below 80% APDR (to a minimum of 41.3%) and this indicates that there are outliers present in the network. Simulation results show that the Average Throughput (AT) value lies between 120 Kbps to 250 Kbps.
Sensitivity Analysis for Predicting Sub-Micron Aerosol Concentrations Based on Meteorological Parameters
Authors: Zaidan Martha A. , Surakhi Ola , Fung Pak Lun , Hussein Tareq
Published: May 2020

Sub-micron aerosols are a vital air pollutant to be measured because they pose health effects. These particles are quantified as particle number concentration (PN). However, PN measurements are not always available in air quality measurement stations, leading to data scarcity. In order to compensate this, PN modeling needs to be developed. This paper presents a PN modeling framework using sensitivity analysis tested on a one year aerosol measurement campaign conducted in Amman, Jordan. The method prepares a set of different combinations of all measured meteorological parameters to be descriptors of PN concentration. In this case, we resort to artificial neural networks in the forms of a feed-forward neural network (FFNN) and a time-delay neural network (TDNN) as modeling tools, and then, we attempt to find the best descriptors using all these combinations as model inputs. The best modeling tools are FFNN for daily averaged data (with R 2 = 0.77 ) and TDNN for hourly averaged data (with R 2 = 0.66 ) where the best combinations of meteorological parameters are found to be temperature, relative humidity, pressure, and wind speed. As the models follow the patterns of diurnal cycles well, the results are considered to be satisfactory. When PN measurements are not directly available or there are massive missing PN concentration data, PN models can be used to estimate PN concentration using available measured meteorological parameters.
Investigation of the Impact of Infrared Sensors on Core Body Temperature Monitoring by Comparing Measurement Sites
Authors: Chen Hsuan-Yu , Chen Andrew , Chen Chiachung
Published: May 2020

Many types of thermometers have been developed to measure body temperature. Infrared thermometers (IRT) are fast, convenient and ease to use. Two types of infrared thermometers are uses to measure body temperature: tympanic and forehead. With the spread of COVID-19 coronavirus, forehead temperature measurement is used widely to screen people for the illness. The performance of this type of device and the criteria for screening are worth studying. This study evaluated the performance of two types of tympanic infrared thermometers and an industrial infrared thermometer. The results showed that these infrared thermometers provide good precision. A fixed offset between tympanic and forehead temperature were found. The measurement values for wrist temperature show significant offsets with the tympanic temperature and cannot be used to screen fevers. The standard operating procedure (SOP) for the measurement of body temperature using an infrared thermometer was proposed. The suggestion threshold for the forehead temperature is 36 °C for screening of fever. The body temperature of a person who is possibly ill is then measured using a tympanic infrared thermometer for the purpose of a double check.
Fecal Malodor Detection Using Low-Cost Electrochemical Sensors
Authors: Kawadiya Siddharth , Welling Claire , Grego Sonia , Deshusses Marc A.
Published: May 2020

Technology innovation in sanitation is needed for the 4.2 billion people worldwide, lacking safely managed sanitation services. A major requirement for the adoption of these technologies is the management of malodor around toilet and treatment systems. There is an unmet need for a low-cost instrumented technology for detecting the onset of sanitation malodor and triggering corrective actions. This study combines sensory data with low-cost gas sensor data on malodor emanating from feces. The response of 10 commercial electrochemical gas sensors was collected alongside olfactometric measurements. Odor from fecal specimens at different relevant dilution as well as specimens with pleasant odors as a control were evaluated for a total of 64 responses. Several of the sensors responded positively to the fecal odor, with the formaldehyde, hydrogen sulfide, and ammonia sensors featuring the highest signal to noise ratio. A positive trend was observed between the sensors’ responses and the concentration of the odorant and with odor intensity, but no clear correspondence with dilution to threshold (D/T) values was found. Selected sensors were responsive both above and below the intensity values used as the cutoff for offensive odor, suggesting the possibility of using those sensors to differentiate odor offensiveness based just on the magnitude of their response. The specificity of the sensors suggested that discrimination between the selected non-fecal and fecal odors was possible. This study demonstrates that some of the evaluated sensors could be used to assemble a low-cost malodor warning system.
V2X-Communication-Aided Autonomous Driving: System Design and Experimental Validation
Authors: Jung Chanyoung , Lee Daegyu , Lee Seungwook , Shim David Hyunchul
Published: May 2020

In recent years, research concerning autonomous driving has gained momentum to enhance road safety and traffic efficiency. Relevant concepts are being applied to the fields of perception, planning, and control of automated vehicles to leverage the advantages offered by the vehicle-to-everything (V2X) communication technology. This paper presents a V2X communication-aided autonomous driving system for vehicles. It is comprised of three subsystems: beyond line-of-sight (BLOS) perception, extended planning, and control. Specifically, the BLOS perception subsystem facilitates unlimited LOS environmental perception through data fusion between local perception using on-board sensors and communication perception via V2X. In the extended planning subsystem, various algorithms are presented regarding the route, velocity, and behavior planning to reflect real-time traffic information obtained utilizing V2X communication. To verify the results, the proposed system was integrated into a full-scale vehicle that participated in the 2019 Hyundai Autonomous Vehicle Competition held in K-city with the V2X infrastructure. Using the proposed system, the authors demonstrated successful completion of all assigned real-life-based missions, including emergency braking caused by a jaywalker, detouring around a construction site ahead, complying with traffic signals, collision avoidance, and yielding the ego-lane for an emergency vehicle. The findings of this study demonstrated the possibility of several potential applications of V2X communication with regard to autonomous driving systems.
Nanotechnology-Based Vaccines for Allergen-Specific Immunotherapy: Potentials and Challenges of Conventional and Novel Adjuvants under Research
Authors: Johnson Litty , Duschl Albert , Himly Martin
Published: May 2020

The increasing prevalence of allergic diseases demands efficient therapeutic strategies for their mitigation. Allergen-specific immunotherapy (AIT) is the only causal rather than symptomatic treatment method available for allergy. Currently, AIT is being administered using immune response modifiers or adjuvants. Adjuvants aid in the induction of a vigorous and long-lasting immune response, thereby improving the efficiency of AIT. The successful development of a novel adjuvant requires a thorough understanding of the conventional and novel adjuvants under development. Thus, this review discusses the potentials and challenges of these adjuvants and their mechanism of action. Vaccine development based on nanoparticles is a promising strategy for AIT, due to their inherent physicochemical properties, along with their ease of production and ability to stimulate innate immunity. Although nanoparticles have provided promising results as an adjuvant for AIT in in vivo studies, a deeper insight into the interaction of nanoparticle–allergen complexes with the immune system is necessary. This review focuses on the methods of harnessing the adjuvant effect of nanoparticles by detailing the molecular mechanisms underlying the immune response, which includes allergen uptake, processing, presentation, and induction of T cell differentiation.
A coastal survey in the southern part of the Palaeoproterozoic Rinkian fold belt, central West Greenland
Authors: Garde Adam A. , Connelly James N. , Krawiec Adam W. , Piazolo Sandra , Thrane Kristine
Published: May 2020

A brief but potentially important part of the 2001 field investigations in the Precambrian of West Greenland (van Gool et al. 2002, this volume) was devoted to the southernmost part of the Palaeoproterozoic Rinkian fold belt east of Disko Bugt (Fig. 1). From 9–17 August the five authors carried out a reappraisal of critical Archaean and Proterozoic relationships and collected samples for precise geochronological studies. The principal aims are to date the main Rinkian tectonic and metamorphic events in this region as precisely as possible and compare them with the evolution of the Nagssugtoqidian orogen to the south (see van Gool et al. 2002, this volume, fig. 1). The vessel M/S Søkongen provided logistic support; a helicopter provided transport to Nunatarsuaq.
The Generalized Ampadu-G Family of Distributions: Properties, Applications and Characterizations
Authors: Ampadu Clement Boateng , Anafo Abdulzeid Yen
Published: May 2020

This paper introduces a new class of distributions called the generalized Ampadu-G (GA-G for short) family of distributions, and with a certain restriction on the parameter space, the family is shown to be a life-time distribution. The shape of the density function and hazard rate function of the GA-G family is described analytically. When G follows the Weibull distribution, the generalized Ampadu-Weibull (GA-W for short) is presented along with its hazard and survival function. Several sub-models of the GA-W family are presented. The transformation technique is applied to this new family of distributions, and we obtain the quantile function of the new family. Power series representations for the cumulative distribution function (CDF) and probability density function (PDF) are also obtained. The rth non-central moments, moment generating function, and Renyi entropy associated with the new family of distributions are derived. Characterization theorems based on two truncated moments and conditional expectation are also presented. A simulation study is also conducted, and we find that using the method of maximum likelihood to estimate model parameters is adequate. The GA-W family of distributions is shown to be practically significant in modeling real life data, and is shown to be superior to some non-trivial generalizations of the Weibull distribution. A further development concludes the paper.
Direct visualization of a strain-induced dynamic stress network in a SEBS thermoplastic elastomer with in situ AFM nanomechanics
Authors: Liu Haonan , Liang Xiaobin , Nakajima Ken
Published: May 2020

Thermoplastic elastomers (TPEs) may generate a residual strain after being stretched, which hinders their potential for use in high-performance materials. However, the mechanism of the residual strain formation has not been sufficiently elucidated thus far. Here, we used atomic force microscopy-based nanomechanical mapping to investigate a stretched TPE specimen consisting of poly(styrene-b-ethylene-co-butylene-b-styrene) with a content of 15 wt% styrene (SEBS-15). In the SEBS-15 polymer structure that maintained a strain of 0.5, hard-segmental (HS) amorphous domains aggregated by poly(styrene) segments deformed and became oriented parallel to the stretching direction, whereas soft-segmental rubbery domains aggregated by poly(ethylene-co-butylene) segments elongated, formed a stress network using the HS domains as junction points. Moreover, an in situ observation adopted for the stretched SEBS-15 revealed that HS domains therein underwent a relative displacement and partial separation that was influenced by the formed stress network, which was strongly related to the irreversible phenomena.
Vulnerabilities of Intelligent Network System
Authors:   Computer Science department, Faculty of Information Systems and Computer Science, October 6 University, Giza, Egypt., Ragab* Ahmed Refaat
Published: May 2020

The intelligent network (IN), plays an important role in the telecommunication process, as a part of the human life. Although, the numbers of network vulnerabilities discovered each year are growing rapidly, and it becomes impossible for system administrators to keep the software running on their network machines free of security bugs. Thus, it is important to clear the vulnerability of certain network or system, this paper investigates the vulnerability analysis of intelligent network (IN), by giving a clear study of the vulnerability analysis of the intelligent network , by applying two scenarios, one is done using different types of operating systems trying to hack them and the other scenario by studying the routing vulnerability problems. This study can be valuable to another research and development work.
Lembranças revolucionárias de 1959: Revolução Cubana
Authors: Lovatto Angélica
Published: May 2020

O segundo número de 2019 da Revista Novos Rumos (n.56, volume 2) faz referência à Revolução Cubana, sem dúvida a mais importante data revolucionária socialista da história da América Latina. 
A homenagem desta edição especial aos 60 anos da Revolução Cubana, com textos na Seção ClássicosDocumentos e os três textos da Seção Artigos, foi proposta e organizada por Paulo Douglas Barsotti (IAP-SP), Angélica Lovatto (Unesp) e Luiz Bernardo Pericás (USP). Portanto, na Seção I: Clássicos–Documentos apresentamos o artigo de 1926 de Julio Antonio Mella, “Glosas ao pensamento de José Martí: um livro que precisa ser escrito”. E na Seção Artigos, os três textos que têm como tema a revolucionária Cuba são mais dois artigos de Mella, de 1925 e 1927, respectivamente, a saber: “Imperialismo, tirania, soviete” e “A provocação imperialista aos sovietes”. E o longo e importantíssimo artigo de Isabel Monal, professora de filosofia da Universidade de La Habana e editora da Revista Marx Ahora, hoje com 88 anos e que vivenciou o processo revolucionário cubano desde sua juventude, “José Martí: do liberalismo ao democratismo anti-imperialista”.
Imperialismo, tirania, soviete
Authors: Mella Julio Antonio
Published: May 2020

Publicado originalmente com o título “Imperialismo, tiranía, soviet”, in Venezuela Libre, Havana, 1º de junho de 1925.  Traduzido por Luiz Bernardo Pericás. 
Recebido em 14-07-2019
Aprovado em 09-09-2019
A agonia do nacional-popular
Authors: Goiana Barboza Luciana
Published: May 2020

Partindo do reconhecimento de que vivemos hoje no Brasil uma situação de profunda regressão cultural e derrota dos projetos emancipatórios, esse ensaio pretende refletir sobre o declínio das formas de criação e expressão daquela visão de mundo democrática e historicista que Antonio Gramsci chamou de "nacional-popular". O enfraquecimento dessa representação alternativa da nação é algo que se verifica não apenas por meio de uma análise empírica dos produtos culturais consumidos pela população brasileira, mas pela constatação do rareamento, no âmbito da sociedade civil, dos aparelhos culturais em que atuam os intelectuais na organização de uma concepção de mundo alternativa.
Recebido em 25-08-2019
Aprovado em 12-12-2019
An evaluation of conventional cleaning and disinfection and electrostatic disinfectant spraying in K-12 schools
Authors: Ford B Douglas , Sopha Keith
Published: May 2020

Background: Microbes endemic to student desks can survive for long periods and infect students. The effectiveness of conventional cleaning and disinfection practices and
electrostatic disinfectant spraying were examined.
Methods: Six K-12 schools in Southeastern Ontario participated in the study. The viable microbial loads on 100 student desks were assessed via Replicate Organism
Detection and Counting (RODAC) plates before and after cleaning and disinfection procedures.
Results: The adjunctive effect of electrostatic disinfectant spraying was tested on 36 desks. Mean pretest colony-forming units (CFUs) per desk were 126.8 (SD 95.7), after
conventional cleaning and disinfection mean CFUs were 73.4 (SD 93.0) (t = 4.0, P = 0.0003), and subsequent electrostatic disinfectant spraying further reduced mean
CFUs to 54.2 (SD 85.0) (t = 2.6, P = 0.02). The independent effect of electrostatic disinfectant spraying without an intervening conventional cleaning step was tested on
64 desks. Mean pretest CFUs were 106.4 (SD 94.5) and after electrostatic disinfectant spraying mean CFUs decreased to 62.9 (SD 87.1) (t = 3.3, P = 0.001).
Conclusions: Conventional and electrostatic disinfection methods were both effective in increasing the hygienic state of student desks. Electrostatic disinfection spraying
improved hygienic state when conducted after conventional cleaning and disinfection and when used independently.
ОСНОВНІ ТЕНДЕНЦІЇ РОЗВИТКУ СУЧАСНОГО РИНКУ КРЕДИТНИХ ПОСЛУГ В УКРАЇНІ
Authors: Мостовенко Н.А., к.е.н, доцент  , Коробчук Т.І., к.е.н., доцент  , Чиж Н.М., к.е.н, доцент
Published: May 2020

Для розширення господарської діяльності та забезпечення безперервності господарського обороту економічні суб’єкти в якості запозичених ресурсів найчастіше вдаються до кредитування. Відтак кредитні послуги банків та небанківських фінансових установ займають вагому частку на  вітчизняному ринку фінансових послуг. Основними суб’єктами ринку кредитних послуг є банки, небанківські фінансові установи та інші юридичні особи, що не мають статусу фінансових установ, але мають відповідні ліцензії. Ринок кредитних послуг постійно перебуває під дією інституційних, економічних та соціально-політичних чинників, які можуть призвести до дестабілізації, спроб запровадження методів недобросовісної конкуренції, втрати довіри, і, як наслідок, призвести до порушення процесів відтворення. У проведеному дослідженні виявлено, що банківська система є безперечним лідером на ринку кредитних послуг. Проте, нині значну конкуренцію в сегменті кредитування фізичних осіб банківським установам складають різноманітні фінансові установи. Структура кредитного портфеля банків у розрізі клієнтів свідчить про те, що банківські установи достатньо активні в сегменті кредитування фізичних осіб, а тому розглядають фінансові компанії як конкурентів. На ринку зростає попит на короткострокові позики з терміном до одного місця. Також небанківські установи значно випереджають банківський сектор за показником приросту обсягів надання кредитних послуг. Зростає значення ринку лізингових та факторингових кредитних послуг. Ситуацію на ринку кредитних послуг ломбардів можна вважати відносно сталою, обсяг наданих кредитів цими установами зростав повільніше, ніж інші види кредитування. Отже, дія різноманітних ринкових чинників та незавершеність процесів регуляції небанківських фінансово-кредитних установ призводить загострення конкуренції між суб’єктами ринку, до змін в організаційних формах кредитних відносин та у процесах формування попиту та пропозиції кредитних ресурсів.
ОНОВЛЕННЯ ЗНАНЬ В ІНФОРМАЦІЙНОМУ СОЦІУМІ
Authors: Полухтович Т.Г., к.пед.н. доцент  , Мельничук Ю.Є., к.пед.н., старший викладач
Published: May 2020

У статті досліджується використання інформаційних ресурсів  для оновлення знань і підвищення мотивації навчальної діяльності студентів-магістрів факультету комп’ютерних наук та інформаційних технологій  у Луцькому НТУ. У зв’язку з цим перед вищою освітою  стоять завдання розробки ефективних технологій, форм і методів навчання, які б суттєво підвищували рівень мотиваційної сфери студентів. Визначили, що для позитивного підвищення мотивації необхідні компетентність викладача, професійна спрямованість навчальної діяльності, що включає електронну навчальну систему. Її зміст складають і електронні посібники для студентів-магістрів, які, на нашу думку, підвищать мотивацію до засвоєння нових знань. Здійснили аналіз  програмних засобів, які застосовуються для створення електронних дидактичних ресурсів.

            Було встановлено, що на розвиток мотиваційних компонентів особистості впливають: зміст освітньої діяльності - новизна матеріалу, усвідомлення значення запропонованого навчального матеріалу для майбутньої професійної діяльності; організація навчального процесу;  форми і методи навчання.

           Для ефективності методики використання інноваційних технологій у формуванні мотивації до навчання студентів-магістрів було організовано й проведено педагогічний експеримент, у ході якого перевірялася загальна гіпотеза: методично обґрунтоване використання  електронного посібника у навчальній роботі вищої школи. Електронні освітні ресурси, електронні соціальні мережі, презентації тощо сприяють  формуванню соціальної мотивації. Розроблена модель дозволить підвищити ефективність діяльності викладачів у вирішенні означеної проблеми та сприятиме поліпшенню результативності  навчального процесу.
ВОЛИНСЬКА ОБЛАСТЬ У ПЛОЩИНІ СОЦІАЛЬНО-ЕКОНОМІЧНОГО РОЗВИТКУ УКРАЇНИ
Authors: Вахович І.М., д.е.н., професор  , Камінська І.М., к.е.н., доцент  , Недопад Г.В., аспірант
Published: May 2020

У статті проаналізовано основні показники соціально-економічного розвитку Волинської області та здійснено їх порівняльний аналіз із показниками за іншими регіонами України. Встановлено, що Волинська область є регіоном із середнім рівнем соціально-економічного розвитку з тенденцією до його зниження. Доведено, що, в умовах високого рівня регіональної диференціації в Україні, середні значення показників соціально-економічного розвитку регіонів є недостатніми для капіталізації економіки, забезпечення належного рівня добробуту й якості життя населення.

Також проаналізовано місце Волинської області у різноманітних регіональних рейтингах, що достатньо переконливо демонструють місце регіону в соціально-економічному розвитку України.

Результати моніторингу соціально-економічного розвитку регіонів показали, що прийняті у Волинській області управлінські рішення були недостатньо ефективними й дієвими, а тому існує потреба їх коригування та і загалом оновлення моделей стратегічного планування й управління в регіоні.

Результати регіонального рейтингу ведення бізнесу показали  наявність проблемних моментів взаємодії суб’єктів господарювання із місцевими органами влади у Волинській області, адже фактично область набрала лише 50,8% балів з можливих і лише за рахунок того, що в інших регіонах держави ситуація була ще гіршою, зайняла 8-у позицію в такому рейтингу. Це підтверджує недостатньо сприятливі умови й неналежний бізнес-клімат для розвитку малого та середнього підприємництва в регіонах України загалом.

Згідно результатів рейтингу інвестиційної ефективності областей України, Волинська область значно поліпшила свої позиції порівняно з 2016 роком. Високі бали Волинської області у І кварталі             2018 року свідчать про потенціал регіону для підвищення інвестиційної ефективності.

У рейтингу областей України за успіхами в євроінтеграції, Волинська область увійшла до шестірки регіонів із найвищими балами. Хоча реально Волинська область набрала лише 50,9% від максимально можливого рівня балів, що засвідчує в цілому низьку активність регіонів України у процесах європейської інтеграції, нереалізованість потенціалу Волинської області у даному напрямі та упущені нею можливості на рівні близько 50%. 

За результатами моніторингу процесу децентралізації та реформування місцевого самоврядування, Волинська область у рейтингу областей щодо формування спроможних громад станом на 10 січня               2020 рік зайняла 6 місце.

Загалом Волинська область згідно розглянутих регіональних рейтингів займає в середньому вищі від середнього позиції серед регіонів України. Разом з тим, результати проведеного аналітичного дослідження продемонстрували нестабільність соціально-економічного розвитку Волинської області та нестійкі її позиції в рейтингових таблицях.

Отримані результати можуть бути використані під час формування стратегії соціально-економічного розвитку Волинської області та прогнозування показників на cередньо- і довгострокову перспективу.
Актуальні питання забезпечення безпеки праці шульги
Authors: Станіславчук О. В. , Марич В. М. , Казмірук Н. С.
Published: May 2020

Встановлено, що незважаючи на те, що частка шульг у світі й в Україні зокрема, в наш час зростає, дослідження шляхів адаптації таких людей у суспільному житті обмежується тільки віковою категорією малюки та школярі. З'ясовано, що проблему забезпечення безпеки праці ліворуких людей в Україні не досліджують, а тому такі працівники потерпають від непристосованості умов праці та організації робочого місця відповідно до їхніх фізіологічних потреб. Виявлено, що промисловість у нашій країні і у більшості інших країн не виготовляє технологічного обладнання та інструменту, адаптованого до роботи на ньому робітників-шульг. Виконання роботи ліворукими працівниками засобами праці, що передбачені для праворуких, знижує продуктивність праці та якість виконаної роботи, підвищує рівень ризику виникнення виробничого травматизму та розвитку професійних захворювань. Охарактеризовано основні проблеми, які виникають під час професійної діяльності робітника-шульги у різних галузях промисловості, а також виявлено окремі випадки та види робіт, для виконання яких перевагу необхідно надати саме робітнику-шульзі для підвищення ефективності та безпеки праці. Розглянуто умови праці верстатника меблевої фабрики, шкідливі і небезпечні виробничі чинники, що впливають на його життя і здоров'я та запропоновано загальні рекомендації щодо підвищення безпеки праці верстатників-шульг. Встановлено актуальність подальших досліджень із вирішення проблеми адаптації умов праці до потреб ліворуких працівників у різних галузях промисловості.
Free Vibrations of Rigid Kinematic Support of Yu.D. Cherepinsky
Authors: Tyapin A. G.
Published: May 2020

The author derives the equation of free vibrations for kinematical rolling support of Yu.D.Cherepinsky. Both support and the surface below are assumed rigid. It is shown that Lagrange equation is similar to the equation of motion for rotational oscillator where the rotation centre, rotational inertia and stiffness are changing every moment, depending on displacements. This equation can be further simplified to the linear form with the error proportional to the second degree of displacements. This equation looks somewhat like the equation for classical pendulum, but effective length in our case is controlled by curvature radii of support and of the rolling surface, as well as by the position of vertical load relative to the centre of the support. Non-linear characteristic is soft. The main no-linearity is in the inertial term, and not in the stiffness term.
Nanoslotted microring resonator for high figure of merit refractive index sensing
Authors: Daquan Yang  , Bing Duan  , Xuan Zhang  , Hui Lu
Published: May 2020

A nanoslotted microring resonator (NSMR) with enhanced light-matter interaction has been designed, which can be used for high sensitive refractive index sensing. The performance of the device is investigated theoretically based on a three-dimensional finite-difference time-domain (3D-FDTD) method. In order to achieve high figure of merit sensing, the nanoslot geometry is exploited to make the optical field strongly localized inside the low index region and overlap sufficiently with the analytes. By using the 3D-FDTD method, the proposed NSMR sensor device achieves a high Q-factor (Q > 105) and sensitivity ~100 nm/RIU (RIU – refractive index unit). Moreover, the strong light confinement introduced by the nanoslot in NSMR results in the sensor figure of merit as high as 6.73 × 103. Thus, the design we proposed is a promising platform for refractive index-based biochemical sensing and lab-on-a-chip applications.
Using Job Advertisements to Advance Event Management Research
Authors: Arcodia Charles , Novais Margarida Abreu , Le Truc H.
Published: May 2020

Continued progress in the tourism industry and rapid technological advances have pointed to the continued need for well-educated managers in the event sector. Attempts at professionalizing have also identified formal tertiary education and industry training to be significant components
in these efforts, and although there is a clear association between education and the needs of the industry, the correlation has often been questioned. This discussion examines the prevailing, but limited discourse on event management skills and attributes, analyzes its implications, and offers
several explicit research propositions to advance knowledge using job advertisement analysis. These suggestions will be of benefit to formal education providers and the event sector as an international agenda for event management skilling is advanced.
A New Manner of Crossing in the Genetic Algorithm for Resolving Job Shop Problem (JSP)
Authors: Bourazza Said
Published: May 2020

The minimization of the makespan of the job shop problem with J jobs and M machines is NP-hard problem. To resolve it we apply a genetic algorithm [1,2]. We use a real coding for the representation of chromosomes. The originality of our variant lies by the choice of two effective crossover operators and one for mutation, As well as their respective probability, determined by numeric simulations on several examples known in the literature. We compare our results on ''OR library'' benchmarks [3] with Adamas and al. [4], Ombuki and al [5] and Yamada and al [6] results.
PENGARUH WAKTU FERMENTASI TEMPOYAK TERHADAP SIFAT ORGANOLEPTIK SAMBAL TEMPOYAK
Authors: Anggraini Lindah , Widawati Lina
Published: May 2020

Tempoyak a fermented food from durian fruit with a sour taste. Tempoyak made with the addition of salt as much as 1-1.5% into pulp which is then cured for three to seven days at room temperature. This study aims to determine the effect of variations in the level of consumer preferences of the fermentation time in processing tempoyak sauce. The research was conducted three phases, namely fermentation stage tempoyak with treatment fermentation time (3, 5, and 7 days), the processing stage tempoyak sauce, and phase analysis of the level of preference. Results of the analysis conducted on the analysis of the level of preference expressed in tempoyak sauce stated that there was no noticeable difference in tempoyak sauce based parameters tempoyak sauce taste and texture. But there is a noticeable difference in tempoyak sauce based on the parameters of color and flavour tempoyak sauce. From the color parameters, panelists preferred the tempoyak sauce with fermentation time treatment 3 and 5 days. While the parameters of flavour, panellists preferred the tempoyak sauce with fermentation time treatment 5 and 7 days.Keywords: Fermentation, tempoyak, tempoyak sauce