bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigations of Transient Plasma Generated by Laser Ablation of Hydroxyapatite during the Pulsed Laser Deposition Process
Authors: Agop Maricel , Cimpoesu Nicanor , Gurlui Silviu , Irimiciuc Stefan Andrei
Published: January 2020

The optimization of the pulsed laser deposition process was attempted here for the generation of hydroxyapatite thin films. The deposition process was monitored with an ICCD (Intensified Coupled Charged Device) fast gated camera and a high-resolution spectrometer. The global dynamics of the laser produced plasma showed a self-structuring into three components with different composition and kinetics. The optical emission spectroscopy revealed the formation of a stoichiometric plasma and proved that the segregation in the kinetic energy of the plasma structure is also reflected by the individual energies of the ejected particles. Atomic Force Microscopy was also implemented to investigate the properties and the quality of the deposited film. The presence of micrometric clusters was seen at a high laser fluence deposition with in-situ ICCD imaging. We developed a fractal model based on Schrödinger type functionalities. The model can cover the distribution of the excited states in the laser produced plasma. Moreover, we proved that SL(2R) invariance can facilitate plasma substructures synchronization through a self-modulation in amplitude.
New Results for Oscillatory Behavior of Fourth-Order Differential Equations
Authors: El-Nabulsi Rami Ahmad , Moaaz Osama , Bazighifan Omar
Published: January 2020

Our aim in the present paper is to employ the Riccatti transformation which differs from those reported in some literature and comparison principles with the second-order differential equations, to establish some new conditions for the oscillation of all solutions of fourth-order differential equations. Moreover, we establish some new criterion for oscillation by using an integral averages condition of Philos-type, also Hille and Nehari-type. Some examples are provided to illustrate the main results.
Forgery Detection and Localization of Modifications at the Pixel Level
Authors: Khan Sahib , Khan Khalil , Ali Farman , Kwak Kyung-Sup
Published: January 2020

In this paper, we present a new technique of image forgery detection. The proposed technique uses digital signatures embedded in the least significant bits of the selected pixels of each row and column. The process maintains a symmetry in the use of pixels for computing and hiding the digital signatures. Each row and column of the image symmetrically contributes to both processes, with the number of pixels per row or column used for computing the signature, and the pixels used for embedding are not equal and are asymmetric. The pixels in each row and column of an image are divided into two groups. One group contains pixels of a row or column used in the calculation of digital signatures, and the second group of pixels is used for embedding the digital signatures of the respective row or column. The digital signatures are computed using the hash algorithm, e.g., message digest five (MD5). The least significant bits substitution technique is used for embedding the computed digital signature in the least significant bits of the selected pixels of the corresponding row or column. The proposed technique can successfully detect the modification made in an image. The technique detects pixel level modification in a single or multiple pixels.
Summing over Spacetime Dimensions in Quantum Gravity
Authors: Curiel Erik , Finster Felix , Isidro Jose Maria
Published: January 2020

Quantum-gravity corrections (in the form of a minimal length) to the Feynman propagator for a free scalar particle in R D are shown to be the result of summing over all dimensions D ′ ≥ D of R D ′ , each summand taken in the absence of quantum gravity.
A Simplified Climate Change Model and Extreme Weather Model Based on a Machine Learning Method
Authors: Ren Xiaobin , Li Lianyan , Yu Yang , Xiong Zhihua , Yang Shunzhou , Du Wei , Ren Mengjia
Published: January 2020

The emergence of climate change (CC) is affecting and changing the development of the natural environment, biological species, and human society. In order to better understand the influence of climate change and provide convincing evidence, the need to quantify the impact of climate change is urgent. In this paper, a climate change model is constructed by using a radial basis function (RBF) neural network. To verify the relevance between climate change and extreme weather (EW), the EW model was built using a support vector machine. In the case study of Canada, its level of climate change was calculated as being 0.2241 (“normal”), and it was found that the factors of CO2 emission, average temperature, and sea surface temperature are significant to Canada’s climate change. In 2025, the climate level of Canada will become “a little bad” based on the prediction results. Then, the Pearson correlation value is calculated as being 0.571, which confirmed the moderate positive correlation between climate change and extreme weather. This paper provides a strong reference for comprehensively understanding the influences brought about by climate change.
Nuclear Spin-Dependent Effects of Parity Nonconservation in Ortho-H2
Authors: Chubukov Dmitry V. , Skripnikov Leonid V. , Labzowsky Leonti N. , Plunien Günter
Published: January 2020

We report a theoretical treatment of the nuclear spin-dependent spatial parity nonconserving (NSD-PNC) electron–nuclear interaction effect in the diatomic homonuclear ortho-H 2 molecule. The magnetic dipole transition between v = 1 and v = 0 vibrational sublevels of the ground 1 Σ g + state is examined. The orthohydrogen molecule is a unique molecular system where the parity nonconserving (PNC) nuclear spin-dependent interaction due to the neutral weak currents can be directly observed and the corresponding coupling constant can be extracted from the future experiments. The theoretical simulation shows that using the cavity-enhanced scheme in conjunction with the record achievement of the intracavity absorption spectroscopy, the experiment on the observation of the NSD-PNC effect due to the neutral weak current in ortho-H 2 looks feasible.
Magnetohydrodynamic (MHD) Flow of Micropolar Fluid with Effects of Viscous Dissipation and Joule Heating Over an Exponential Shrinking Sheet: Triple Solutions and Stability Analysis
Authors: Lund Liaquat Ali , Omar Zurni , Khan Ilyas , Raza Jawad , Sherif El-Sayed M. , Seikh Asiful H.
Published: January 2020

A numerical study was carried out to examine the magnetohydrodynamic (MHD) flow of micropolar fluid on a shrinking surface in the presence of both Joule heating and viscous dissipation effects. The governing system of non-linear ordinary differential equations (ODEs) was obtained from the system of partial differential equations (PDEs) by employing exponential transformations. The resultant equations were transformed into initial value problems (IVPs) by shooting technique and then solved by the Runge–Kutta (RK) method. The effects of different parameters on velocity, angular velocity, temperature profiles, skin friction coefficient, and Nusselt number were obtained and demonstrated graphically. We observed that multiple solutions occurred in certain assortments of the parameters for suction on a surface. The stability analysis of solutions was performed, and we noted that the first solution was stable while the remaining two solutions were not. The results also showed that the velocity of the fluid increased as the non-Newtonian parameter rose in all solutions. Furthermore, it was detected that the temperature of fluid rose at higher values of the Eckert number in all solutions.
A Symmetry of the Einstein–Friedmann Equations for Spatially Flat, Perfect Fluid, Universes
Authors: Faraoni Valerio
Published: January 2020

We report a symmetry property of the Einstein–Friedmann equations for spatially flat Friedmann–Lemaître–Robertson–Walker universes filled with a perfect fluid with any constant equation of state. The symmetry transformations form a one-parameter Abelian group.
Aberrant Expressional Profiling of Known MicroRNAs in the Liver of Silver Carp (Hypophthalmichthys molitrix) Following Microcystin-LR Exposure Based on samllRNA Sequencing
Authors: Feng Yiyi , Chen Xi , Ma Junguo , Zhang Bangjun , Li Xiaoyu
Published: January 2020

Microcystin-LR (MC-LR) poses a serious threat to human health due to its hepatotoxicity. However, the specific molecular mechanism of miRNAs in MC-LR-induced liver injury has not been determined. The aim of the present study was to determine whether miRNAs are regulated in MC-LR-induced liver toxicity by using high-throughput sequencing. Our research demonstrated that 53 miRNAs and 319 miRNAs were significantly changed after 24 h of treatment with MC-LR (50 and 200 μg/kg, respectively) compared with the control group. GO enrichment analysis revealed that these target genes were related to cellular, metabolic, and single-organism processes. Furthermore, KEGG pathway analysis demonstrated that the target genes of differentially expressed miRNAs in fish liver were primarily involved in the insulin signaling pathway, PPAR signaling pathway, Wnt signaling pathway, and transcriptional misregulation in cancer. Moreover, we hypothesized that 4 miRNAs (miR-16, miR-181a-3p, miR-451, and miR-223) might also participate in MC-LR-induced toxicity in multiple organs of the fish and play regulatory roles according to the qPCR analysis results. Taken together, our results may help to elucidate the biological function of miRNAs in MC-LR-induced toxicity.
Antibody Responses against Enterovirus Proteases are Potential Markers for an Acute Infection
Authors: Saarinen Niila V. V. , Stone Virginia M. , Hankaniemi Minna M. , Mazur Magdalena A. , Vuorinen Tytti , Flodström-Tullberg Malin , Hyöty Heikki , Hytönen Vesa P. , Laitinen Olli H.
Published: January 2020

Background: Enteroviruses are a group of common non-enveloped RNA viruses that cause symptoms ranging from mild respiratory infections to paralysis. Due to the abundance of enterovirus infections it is hard to distinguish between on-going and previous infections using immunological assays unless the IgM fraction is studied. Methods: In this study we show using Indirect ELISA and capture IgM ELISA that an IgG antibody response against the nonstructural enteroviral proteins 2A and 3C can be used to distinguish between IgM positive (n = 22) and IgM negative (n = 20) human patients with 83% accuracy and a diagnostic odds ratio of 30. Using a mouse model, we establish that the antibody response to the proteases is short-lived compared to the antibody response to the structural proteins in. As such, the protease antibody response serves as a potential marker for an acute infection. Conclusions: Antibody responses against enterovirus proteases are shorter-lived than against structural proteins and can differentiate between IgM positive and negative patients, and therefore they are a potential marker for acute infections.
Risks and Challenges of Arboviral Diseases in Sudan: The Urgent Need for Actions
Authors: Ahmed Ayman , Dietrich Isabelle , LaBeaud A. Desiree , Lindsay Steve W. , Musa Ahmed , Weaver Scott C.
Published: January 2020

The risk of emergence and/or re-emergence of arthropod-borne viral (arboviral) infections is rapidly growing worldwide, particularly in Africa. The burden of arboviral infections and diseases is not well scrutinized because of the inefficient surveillance systems in endemic countries. Furthermore, the health systems are fully occupied by the burden of other co-existing febrile illnesses, especially malaria. In this review we summarize the epidemiology and risk factors associated with the major human arboviral diseases and highlight the gap in knowledge, research, and control in Sudan. Published data in English up to March 2019 were reviewed and are discussed to identify the risks and challenges for the control of arboviruses in the country. In addition, the lack of suitable diagnostic tools such as viral genome sequencing, and the urgent need for establishing a genomic database of the circulating viruses and potential sources of entry are discussed. Moreover, the research and healthcare gaps and global health threats are analyzed, and suggestions for developing strategic health policy for the prevention and control of arboviruses with focus on building the local diagnostic and research capacity and establishing an early warning surveillance system for the early detection and containment of arboviral epidemics are offered.
Infection of Human Tracheal Epithelial Cells by H5 Avian Influenza Virus Is Regulated by the Acid Stability of Hemagglutinin and the pH of Target Cell Endosomes
Authors: Daidoji Tomo , Kajikawa Junichi , Arai Yasuha , Watanabe Yohei , Hirose Ryohei , Nakaya Takaaki
Published: January 2020

Despite the possible relationships between tracheal infection and concomitant infection of the terminal part of the lower respiratory tract (bronchioles/alveoli), the behavior of avian influenza viruses (AIVs), such as H5N1, in the conducting airways is unclear. To examine the tropism of AIVs for cells lining the conducting airways of humans, we established human tracheal epithelial cell clones (HTEpC-Ts) and examined their susceptibility to infection by AIVs. The HTEpC-Ts showed differing susceptibility to H5N1 and non-zoonotic AIVs. Viral receptors expressed by HTEpC-Ts bound all viruses; however, the endosomal pH was associated with the overall susceptibility to infection by AIVs. Moreover, H5N1 hemagglutinin broadened viral tropism to include HTEpC-Ts, because it had a higher pH threshold for viral–cell membrane fusion. Thus, H5N1 viruses infect human tracheal epithelial cells as a result of their higher pH threshold for membrane fusion which may be one mechanism underlying H5N1 pathogenesis in human airway epithelia. Efficient replication of H5N1 in the conducting airways of humans may facilitate infection of the lower respiratory tract.
A Tale of Two Viruses: The Distinct Spike Glycoproteins of Feline Coronaviruses
Authors: Jaimes Javier A. , Millet Jean K. , Stout Alison E. , André Nicole M. , Whittaker Gary R.
Published: January 2020

Feline coronavirus (FCoV) is a complex viral agent that causes a variety of clinical manifestations in cats, commonly known as feline infectious peritonitis (FIP). It is recognized that FCoV can occur in two different serotypes. However, differences in the S protein are much more than serological or antigenic variants, resulting in the effective presence of two distinct viruses. Here, we review the distinct differences in the S proteins of these viruses, which are likely to translate into distinct biological outcomes. We introduce a new concept related to the non-taxonomical classification and differentiation among FCoVs by analyzing and comparing the genetic, structural, and functional characteristics of FCoV and the FCoV S protein among the two serotypes and FCoV biotypes. Based on our analysis, we suggest that our understanding of FIP needs to consider whether the presence of these two distinct viruses has implications in clinical settings.
A Single Dose of Dendrimer B2T Peptide Vaccine Partially Protects Pigs against Foot-and-Mouth Disease Virus Infection
Authors: Cañas-Arranz Rodrigo , Forner Mar , Defaus Sira , de León Patricia , Bustos María J. , Torres Elisa , Sobrino Francisco , Andreu David , Blanco Esther
Published: January 2020

Foot-and-mouth disease virus (FMDV) causes a highly contagious disease of cloven-hoofed animals whose control relies on efficient vaccination. We have reported that dendrimer peptide B2T, with two copies of FMDV B-cell epitope VP1 (136–154) linked through maleimide units to T-cell epitope 3A (21–35)], elicits potent B- and T-cell specific responses and confers solid protection in pigs to type-O FMDV challenge after two doses of peptide. Herein we now show that B2T evokes specific protective immune responses after administration of a single dose of either 2 or 0.5 mg of peptide. High titers of ELISA and neutralizing antibodies against FMDV were detectable at day 15 post-immunization. Likewise, activated T cells and induced IFN-γ response to in vitro recall with FMDV peptides were also detected by the same day. Further, in 70% of B2T-vaccinated pigs, full protection—no clinical signs of disease—was observed upon virus challenge at day 25 post-immunization. These results strengthen the potential of B2T as a safe, cost-effective candidate vaccine conferring adequate protection against FMDV with a single dose. The finding is particularly relevant to emergency scenarios permitting only a single shot immunization.
Small and Medium-Scale River Flood Controls in Highly Urbanized Areas: A Whole Region Perspective
Authors: Liu Zengmei , Cai Yuting , Wang Shangwei , Lan Fupeng , Wu Xushu
Published: January 2020

While rapid urbanization promotes social and economic development, it poses a serious threat to the health of rivers, especially the small and medium-scale rivers. Flood control for small and medium-scale rivers in highly urbanized areas is particularly important. The purpose of this study is to explore the most effective flood control strategy for small and medium-scale rivers in highly urbanized areas. MIKE 11 and MIKE 21 were coupled with MIKE FLOOD model to simulate flooding with the flood control standard, after which the best flooding control scheme was determined from a whole region perspective (both the mainstream and tributary conditions were considered). The SheGong River basin located near the Guangzhou Baiyun international airport in Guangzhou city over south China was selected for the case study. The results showed that the flooding area in the basin of interest accounts for 42% of the total, with maximum inundation depth up to 0.93 m under the 20-year return period of the designed flood. The flood-prone areas are the midstream and downstream where urbanization is high; however the downstream of the adjacent TieShan River is still able to bear more flooding. Therefore, the probable cost-effective flood control scheme is to construct two new tributaries transferring floodwater in the mid- and downstream of the SheGong River into the downstream of the TieShan River. This infers that flood control for small and medium-scale rivers in highly urbanized areas should not simply consider tributary flood regimes but, rather, involve both tributary and mainstream flood characters from a whole region perspective.
A Clustered, Decentralized Approach to Urban Water Management
Authors: Tsegaye Seneshaw , Missimer Thomas M. , Kim Jong-Yeop , Hock Jason
Published: January 2020

Current models in design of urban water management systems and their corresponding infrastructure using centralized designs have commonly failed from the perspective of cost effectiveness and inability to adapt to the future changes. These challenges are driving cities towards using decentralized systems. While there is great consensus on the benefits of decentralization; currently no methods exist which guide decision-makers to define the optimal boundaries of decentralized water systems. A new clustering methodology and tool to decentralize water supply systems (WSS) into small and adaptable units is presented. The tool includes two major components: (i) minimization of the distance from source to consumer by assigning demand to the closest water source, and (ii) maximization of the intra-cluster homogeneity by defining the cluster boundaries such that the variation in population density, land use, socio-economic level, and topography within the cluster is minimized. The methodology and tool were applied to Arua Town in Uganda. Four random cluster scenarios and a centralized system were created and compared with the optimal clustered WSS. It was observed that the operational cost of the four cluster scenarios is up to 13.9 % higher than the optimal, and the centralized system is 26.6% higher than the optimal clustered WSS, consequently verifying the efficacy of the proposed method to determine an optimal cluster boundary for WSS. In addition, optimal homogeneous clusters improve efficiency by encouraging reuse of wastewater and stormwater within a cluster and by minimizing leakage through reduced pressure variations.
Resilient Urban Water Services for the 21th Century Society—Stakeholder Survey in Finland
Authors: Laitinen Jyrki , Kallio Johanna , Katko Tapio S. , Hukka Jarmo J. , Juuti Petri
Published: January 2020

Resilience has become a vital theme in the discussion concerning urban water services. Resilience in this context can be defined as both keeping up a good level of services, as well as rapid and fluent recovery from failures caused by natural disasters, unsound infrastructure or incorrect management. Although adequate water services resilience can be considered as sustainable, resilience is a wider concept than sustainability. In order to call water services resilient, all sections from policy and management to technical operation should be clear and coherent, and their operation in challenging situations also must be guaranteed. This study seeks a resilient approach to water services through a literature review, and a questionnaire to stakeholders; mainly water supply and sanitation experts. The results show that sufficient technology and good water quality are not sufficient for achieving resilient water services, but also education and institutional management are essential issues. These are accomplished by a methodical education system, capacity building, and good governance.
Multi-Indicator Evaluation for Extreme Precipitation Events in the Past 60 Years over the Loess Plateau
Authors: Sun Chaoxing , Huang Guohe , Fan Yurui
Published: January 2020

The unique characteristics of topography, landforms, and climate in the Loess Plateau make it especially important to investigate its extreme precipitation characteristics. Daily precipitation data of Loess Plateau covering a period of 1959–2017 are applied to evaluate the probability features of five precipitation indicators: the amount of extreme heavy precipitation (P95), the days with extreme heavy precipitation, the intensity of extreme heavy precipitation (I95), the continuous dry days, and the annual total precipitation. In addition, the joint risk of different combinations of precipitation indices is quantitatively evaluated based on the copula method. Moreover, the risk and severity of each extreme heavy precipitation factor corresponding to 50-year joint return period are achieved through inverse derivation process. Results show that the precipitation amount and intensity of the Loess Plateau vary greatly in spatial distribution. The annual precipitation in the northwest region may be too concentrated in several rainstorms, which makes the region in a serious drought state for most of the year. At the level of 10-year return period, more than five months with no precipitation events would occur in the Northwest Loess Plateau. While, P95 or I95 events of 100-year level may be encountered in a 50-year return period and in the southeastern region, which means there are foreseeable long-term extreme heavy precipitation events.
Climate Change Impacts on Hydropower in Yunnan, China
Authors: Liu Benxi , Lund Jay , Liu Lingjun , Liao Shengli , Li Gang , Cheng Chuntian
Published: January 2020

Climate change could have dire effects on hydropower systems, especially in southwest China, where hydropower dominates the regional power system. This study examines two large cascade hydropower systems in Yunnan province in southwest China for 10 climate change projections made with 5 global climate models (GCMs) and 2 representative concentration pathways (RCPs) under Coupled Model Intercomparison Project Phase 5 (CMIP5). First, a back propagation neural network rain-runoff model is built for each hydropower station to estimate inflows with climate change. Then, a progressive optimality algorithm maximizes hydropower generation for each projection. The results show generation increasing in each GCM projection, but increasing more in GCMs under scenario RCP8.5. However, yearly generation fluctuates more: generation decreases dramatically with potential for electricity shortages in dry years and more electricity as well as spill during wet years. Average annual spill, average annual inflow and average storage have similar trends. The analysis indicates that a planned large dam on the upper Jinsha River would increase seasonal regulation ability, increase hydropower generation, and decrease spill. Increased turbine capacity increases generation slightly and decreases spill for the Lancang River. Results from this study demonstrate effects of climate change on hydropower systems and identify which watersheds might be more vulnerable, along with some actions that could help adapt to climate change.
Improve potato seeds in potato seed farming: practical account
Authors: Gaitova Natalia , Anisimox Boris , Zhevora Sergey , Boyko Valentina , Gaitova Natalia , Fenina Nadezhda , Shishkina Olga
Published: January 2020

The technological process of growing potato seed material begins with the acquisition of the source material and its accelerated reproduction to the required volumes. To include new perspective varieties and hybrids in seed programs, they must be released from a viral infection. Exemption from viruses is a responsible, time-consuming and costly process that requires professionalism, but in the absence of this stage, promising varieties cannot participate in the implementation of seed programs. Only in vitro, a material thoroughly assessed with regard to the presence of pathogens, the varietal typicality and severity of the main variety distinctive features can ensure the high quality of seed potatoes in basic seed production.
Intersubjetividad en los videoblogs: un enfoque fenomenológico
Authors: Dante Seni Medina Giuliano
Published: January 2020

Este texto es parte de los resultados de una investigación que pretende comprender las diversas formas de intersubjetividad en los videoblogs o tubes, particularmente, desde el enfoque fenomenológico de la empatía. El corpus lo integraron los tres videoblogs con más suscriptores de América Latina, se analizaron formas de interacción como puesta en escena, comentarios y vistas. Los resultados arrojan que la empatía se presenta, entre otras formas de interacción, en el mirar a cámara para involucrar al otro, en la autorreferenciación -yo soy éste- en la identidad que surge del uso de expresiones regionales, de vivencias comunes e incluso de subcódigos de la lengua.
Producciones Machinima y la figura del avatar en Second Life
Authors: Fabiana Perez Lelia
Published: January 2020

Este trabajo pone foco en la interrelación del dispositivo cinematográfico y los involucrados en el uso de nuevas tecnologías digitales, como los del videojuego y ciertas prácticas en la Web. La virtualidad digital redescubre la ficcionalidad virtual cinematográfica, retomando una vía que había comenzado a delinearse cuando aparecieron en escena las primeras experimentaciones precinemáticas del S XIX (Manovich: 2008: 170-187). Además, los espacios de producción, circulación y recepción de los ámbitos del videojuego, de Machinima o Second Life proponen nuevos modos de narración que encuentran su especificidad en el rol experiencial e interactivo del jugador y/o avatar que motoriza el desarrollo narrativo (Gallowewy: 2007: 23-27), (Benmergui: 2012)
Presentación. Claves para pensar lo “ciber” en la cibercultura
Authors: R. Colón Zayas Eliseo
Published: January 2020

Esta presentación del número de Ciberculturas ofrece tres claves para abordar la lectura de los ensayos desde los espacios del prefijo “ciber”, los cyberculture studies y la cibersemiótica. Al final, se describen brevemente los tres ejes que organizan su ordenamiento: la ciberpolítica, las ciberidentidades y sistemas semióticos, la ciberestética y las nuevas esferas de lo “ciber”.
La cromaticidad alfanumérica en la cibercultura
Authors: Aschero Sergio
Published: January 2020

La cromaticidad alfanumérica en la cibercultura implica una nueva visión de la representación simbólica tradicional de números y letras. Las múltiples simbologías que se han utilizado históricamente para representar lo alfanumérico han generado diversos mo - delos antagónicos de escritura. En el caso de las lenguas, cuando se ha intentado unificar la grafía y el sonido del habla (Esperanto) el resultado no ha sido exitoso. En este modelo, el sonido de las lenguas se mantiene y lo que se modifica es la imagen, mediante una base matemática conectada con el cromatismo de sus signos y relacionada lógicamente con la extensión de cada uno de los diversos alfabetos existentes.
La dimensión semiótica en el modelo transaccional de Bitcoin.
Authors: Zen Daniel
Published: January 2020

La aparición de formas de intercambio monetario ligadas a la tecnología que no dependen de la validación de los Estados o de instituciones financieras tradicionales sino del consenso entre usuarios, habilita nuevas discusiones en torno a la significación del dinero. Este artículo propone esa temática como campo fértil para la producción semiótica.
Resistencias en red: Tecnopolítica y violencias
Authors: Reguillo Rossana
Published: January 2020

La velocidad y la capacidad de coordinación en las redes y la producción crítica de datos permiten intervenir el relato oficial y crear públicos que contribuyen a la denuncia y búsqueda de personas afectadas. Se seleccionaron dos casos que irrumpieron en la agenda pública mexicana evidenciando feminicidios y abuso policial. Se utilizó el análisis de redes digitales para mostrar las cualidades tecnopolíticas de los mismos
Production of Candle from Oil Extract of a Legume - Soybean
Authors:   Chemical Engineering Department, Covenant University, P.M.B 1023, Canaan Land, Sango, Ogun State, Nigeria., Ojewumi Modupe E. , Olanipekun Ogirima O. ,   Chemical Engineering Department, University of Lagos, Akoka. Lagos., Obanla Oyinlola R. ,   Chemical Engineering Department, Covenant University, P.M.B 1023, Canaan Land, Sango, Ogun State, Nigeria., Ojewumi Emmanuel O. ,   Food Science and Technology Department, Federal University of Technology, Akure, Ondo State. Nigeria., Bassey Ruth S. ,   Chemical Engineering Department, Covenant University, P.M.B 1023, Canaan Land, Sango, Ogun State, Nigeria.
Published: January 2020

This research confirmed that candles produced from oil extract of soybeans are eco-friendly and healthier alternatives to commercial candles made from paraffin wax. The soybeans were sorted, washed, crushed, dehulled and grinded prior to extraction to increase the surface area. Soybean oil is about 30% of the total soybean composition. Soxhlet extraction method was used with hexane as solvent. The extracted oil was then solidified with stearic acid to form wax inside a mold. Physical tests were carried out to prove its claims as a safer alternative to paraffin wax. The results supported the claims that soy candles are more economical and produced lesser soot than the paraffin candles.
Efficient Management of Egg Shell and Conch Shell Wastes by Utilization as Bio Fillers in Eco Friendly Gypsum Mortar
Authors:   Assistant Professor, Department of Civil Engineering, Francis Xavier Engineering College, Tirunelveli, India., S Vivek , M Sophia ,   Research Scholar at Anna University Chennai, India.
Published: January 2020

The efficient waste management and recovery of waste materials are the most important goals of sustainable environmental development. The egg shells and conch shells are solid wastes being deposited in enormous amount which creates large disposal problem. In order to examine the possibility of utilizing these wastes for use in building materials the egg shell and conch shell powders were used as partial replacement for the manufacture of eco-friendly bio mortars. The mechanical characterization of the bio mortar produced by substituting finely ground egg shell and conch shell powder at various percentages were quantitatively investigated. The present research work was executed in two groups – the first group of bio mortar consists of raw egg shell and conch shell powder and the second group consists of thermally treated egg shell and conch shell powder as a partial substitute for binder. The results showed that the untreated egg shell and conch shell powder did not cause much improvement in the strength parameters of bio mortar whereas the thermally treated egg shell and conch shell substituted mortar exhibited a significant improvement in the mortar strength. The scanning electron microscopy images also reveal the denser and compact structure of mortar which supports the filling effect caused by these wastes. This improvement in strength was due to the calcite present in the egg shell and conch shell powder. The calcite traces were further confirmed by the FTIR and XRD studies. Thus the usage of these waste materials as binder reduces the manufacture of cement which minimizes the environmental pollution by mitigating the CO2 emissions.
An Intruder Detection System based on Feature Selection using Random Forest Algorithm
Authors:   Research Scholar, Sri SatyaSai University of Technology & Medical Sciences, Sehore (M.P.), India., Madhukar G. , Kumar G. Nantha ,   Associate Professor, Sri SatyaSai University of Technology & Medical Sciences, Sehore (M.P.), India.
Published: January 2020

In every part of the world, there is tremendous growth in digital literacy in the present era. People are trying to access internet-based applications with the use of digital machines. As a result, the internet has become a primary requirement for everyone, and most business transactions often take place conveniently across the network. On the other hand, intruders involved in making intrusions and doing activities such as capturing passwords, compromise on the route, collecting details of credit cards, etc. Many malicious activities are taking place over the network due to this intruding activity on the internet. Applications such as host-based Intrusion Detection System (IDS) and network-based IDS have previously been used to control network intruders. Mostly when they come with Encrypted packets, spoofed network ids, these techniques were not able to control intruders promisingly. It is essential to examine these types of attacks periodically to identify patterns of recent attacks. In this paper, the authors have proposed a model based on deep learning by using the NSL – KDD dataset to solve these problems. For later train, the model with data with a random forest classifier algorithm, the principal component analysis applied for feature selection. The model is designed to detect patterns of intruders effectively using the knowledge gained from training data. To detect malicious patterns over the network, the model shows a sufficient accuracy of around 90 percent.
МЕТOДИ РOЗВ’ЯЗКУ ТЕМПЕРАТУРНИХ ЗАЛЕЖНOCТЕЙ В’ЯЗКOCТЕЙ МЕТАЛІЧНИХ РOЗПЛАВІВ: OГЛЯД
Authors: Михайлюк Ірина , Царева Олександра , Ваврик Тетяна , Царев Володимир
Published: January 2020

У cтатті дocлідженo метoди рoзв’язку температурних залежнocтей в’язкocтей металічних рoзплавів для пoдальшoї їх реалізації заcoбами ПЕOМ. Виведенo ocнoвні ocoбливocті кoжнoгo з запрoпoнoваних метoдів, ocнoвні підхoди дo вирішення пocтавленoї прoблеми. Прoаналізoванo переваги та недoліки кoжнoгo з наведених метoдів. Ключoві cлoва: металічні рoзплави, температурні залежнocті, заcoби ПЕOМ, прoграмна реалізація, метoди рoзв’язку.
РОЗВИТОК СИСТЕМИ ЗАХИСТУ ПРАВ ЛЮДИНИ В УКРАЇНІ У ВІДПОВІДНОСТІ ДО УГОДИ ПРО АСОЦІАЦІЮ З ЄВРОПЕЙСЬКИМ СОЮЗОМ
Authors: Зельцер Маким
Published: January 2020

Ця стаття присвячена питанням, які виникають стосовно реформ, пов'язаних із захистом прав і свобод людини і громадянина в Україні. У статті проведена оцінка реформ, здійснених українським урядом у 2014-2019 роках, порівняна з показниками ЄС щодо реформованих інститутів, а також окреслено цілі та дорожню карту проведення дій, які мають бути покращити захист прав громадянам України.
Assessment of Heavy Metals, Organic Carbon and Physico-Chemical Properties of Roadside Dust from a Nigerian School Campus
Authors: Olayinka O. D. , Nwosu F.O. , Ahmed S. O. , Fabiyi S.F. , Ajala O. J.
Published: January 2020

University of Ilorin is one of the most populated Universities in Nigeria. Roadside dust was collected from the busiest roads of the university permanent site and level of heavy metals (Fe, Cu, Zn, Cd and Pb), organic carbon and physico-chemical properties of the dust were assessed. Atomic Absorption Spectrometry (Buck Scientific 210/211VGP) was used to analyse for heavy metals while appropriate standard methods were employed for the determination of organic carbon, pH, conductivity, particle density and bulk density of the roadside dust. The pH of dust from all roads was almost alkaline (7.2 – 7.6), particle density ranged from 1.60 - 2.14 gml-1, bulk density ranged from 1.03 – 1.62 gml-1, electrical conductivity ranged from 0.25 to 0.57µScm-1, organic carbon (OC) content of all roadside dust ranged from 0.9 % - 1.2 %. While Pb was obtained to be absent in all the roadside dust samples, it was observed that the abundance of other heavy metals at all the various sampling points and control followed the order Fe >>>Zn >> Cu > Cd. The average level of Fe in the control site was 2443.85 mg/kg which was very lower to that from other sites in the study. The results for the metal pollution index (MPI) show that all the roads were polluted with Fe, Cu, Zn and Cd. The levels of the metals showed a dependence on anthropogenic pollution such as vehicle density compared with the control site.
Obcy – a jednak swoi
Authors: Parzych Małgorzata
Published: January 2020

Kurpie to region postrzegany współcześnie jako ostoja tradycji i kultury, przestrzeń, w której zachowała się gwara, przywiązanie do tradycyjnego stroju oraz obrzędów.W niniejszym artykule zostały zaprezentowane biografie osób, których działalność przyczyniła się do wzmocnienia tożsamości Kurpiów z własnym regionem. Ks. Władysław Skierkowski, doktor Józef Psarski, leśniczy Władysław Rynkiewicz, czy ksiądz Mieczysław Mieszko to ludzie, którzy swoją działalnością przyczynili się do ocalenia dziedzictwa kulturowego Kurpi.Ich zaangażowanie w życie Kurpiowszczyzny wpłynęło bardzo pozytywnie na rozwój regionu i wzmocnienie samoświadomości mieszkańców Puszczy. Życiorysy tych niezwykłych osób są przykładem jak wiele jednostka może wnieść w życie społeczności.
ОСОБЕННОСТИ ФОРМИРОВАНИЯ ЭВОЛЮЦИОННОЙ ЭКОНОМИКИ НА ОСНОВЕ РЕАЛИЗАЦИИ АНТИРЕЦЕССИОННОЙ СТРАТЕГИИ
Authors: Шардан Саида , Мусаев Магомед
Published: January 2020

В статье рассмотрены общее положение экономики мирового хозяйства и проблемы выхода ее к 2020 году на тренд устойчивого развития. Действительно, даже для самых продвинутых государств в последние несколько лет крайне характерен едва заметный рост, хотя и объявлено, что эти страны развиваются на принципах «новой экономики». Для новой экономики начался переход в постиндустриальное общество знаний, завершился пятый, так называемый «Кондратьевский», цикл и начался шестой технологический уклад. Такое положение характеризуется тем, что активно внедряется наноиндустрия, различные нанобиоинформационные, когнитивные и квантовакуумные технологии, широко используется венчурное финансирование, продолжается глобализация информационного пространства посредством развития информационных и телекоммуникационных технологий.
Moroccan Teachers’ Level of ICT Integration in Secondary EFL Classrooms
Authors: Elfatihi Mohamed , Ait Hammou Yassine
Published: January 2020

The sheer growth of information and communication technologies (ICT) has reshaped teaching and learning practices tremendously in the learning environments all over the globe. Research reveals that teachers are the key agents in the integration of ICT in particular in language teaching and learning. However, some of the many factors, this ICT integration are associated with teachers’ personal characteristics such as gender. Therefore, the current study investigates the Moroccan male and female teachers’ level of ICT integration in teaching English as a foreign language (EFL) in the public secondary school EFL classrooms. This study aims to explore whether gender influences the way EFL teachers’ ICT use in the classroom. It is a survey which adopts a mixed-method approach of investigation, and two instruments are used to collect data: a questionnaire and a semi-structured interview. Eighty full-time teachers (45 male and 35 female teachers) belonging to different public secondary schools in the area of Agadir Idaoutanane and Inzegane Ait-Meloul participated in the study by answering a questionnaire, and eight teachers out of this sample (4 male and 4 female teachers) are interviewed. The results of data analysis reveal that although female teachers employed ICT in their teaching less than their male counterparts, there is no significant difference in using ICT in language teaching between the two groups. A number of propositions are presented as to how to incorporate ICT in language learning in the Moroccan secondary schools EFL contexts.
Functions of Character in Indonesian Folklore Princess of the Runaway Valley: A Study of Vladimir Propp Narrative Structure Theory
Authors: Chamalah Evi
Published: January 2020

This study was conducted to document and preserve folklore entitled Princess of the Runaway Valley by unveiling 31 functions of Vladimir Propp narrative structure. This is a historical qualitative and content analysis study. The approach used was an objective one by using narratology structuralism study. In this study, the literary text became the focus of the study in which the researcher focused on the structure of a text. Based on the analysis result, there were only 24 of the 31 functions of character according to Vladimir Propp narrative structure. Therefore, the complexity of the story was not too high because it did not fulfill all functions required. The 7 functions that were absent in the story were absentation, villainy, donor, return, exposure, punishment, and wedding/throne ascession.
The use of e-learning in foreign language learning: A Case Study of Undergraduate EFL Students
Authors: LAACHIR ABDELOUAHED
Published: January 2020

This research paper is intended to shed light on the use of e-learning in learning and more particularly in foreign language learning by EFL students in higher education either to support the process of their traditional learning or for any other independent learning purposes. The aim is to identify how e-learning is used, the various existing e-learning strategies that students prefer to learn with and the extent to which EFL students are satisfied with the support offered by e-learning to assist the process of EFL learning. To answer these queries, a quantitative method is adopted for the collection of data using online tools in the creation and the administration of the questionnaire to the respondents. The findings of the study demonstrate that students usually use e-learning as it helps them to develop many language skills including communication skills, problem solving skills besides the four language skills. It has been shown also that students are highly satisfied with the use of e-learning which is usually used by traditional learning students to fulfill the missing gaps.
Exodus In ‘Exodus’: A Multimodal Analysis of Bob Marley’s Lyrics
Authors: Amenorvi Cosmas Rai
Published: January 2020

This paper employs a multimodal analytical approach in analyzing the theme of exodus in Bob Marley’s ‘Exodus’ album where attention is given to four main areas, namely, the album’s cover design, the employment of lexical items, the use of literary devices as well as aesthetics by which Marley conveys the theme of exodus throughout the album. Findings show that the album’s cover design is symbolically employed to project the theme of exodus. The choice of the gold color as the background as well as the inscription of ‘EXODUS’ in red in the heart of the golden background equivocally reveals Africa’s ‘golden’ contributions to the West while the Africans in the West are ‘bleeding’(red), a reason for which they must embark on an exodus. Lexically, Marley employs content emotion-packed lexical items, namely nouns, verbs, adjectives and adverbs, to project the theme of exodus. Besides, Marley relies heavily on literary devices such as allusion, equivocation, metaphor, repetition and rhyme as tools for the projection of the theme of exodus in his ‘Exodus’ album. Finally, by deliberate design, the names of the songs of the album, their arrangement as well as their number all aesthetically tell a conscious but beautiful story in the name of the overall theme of exodus in the album by the same name, making Marley’s ‘Exodus’ album not merely a classical musical piece but a discourse masterpiece equivalent to one from a skilled troubadour.
Book title: An Introduction to Political Communication
Authors: McNair Brian
Published: January 2020

Dr Brian McNair, an Australian author and academician, has explained the basic ideas concerning political communication in his book “An Introduction to Political Communication”, which discusses in detail the transmission of information in society for the purpose of politics and control.

The author, Brian McNair, is a journalism professor from Queensland University, Australia. The book discusses the role of communication in politics, and how citizens respond to political messages transmitted to them through media from political actors. The political actors are defined as individuals trying to influence decision making though different means.
On the Upper Tail of Counts of Strictly Balanced Subgraphs
Authors: Šileikis Matas
Published: January 2020

Let $X_G$ be the number of copies of $G$ in the Erdős-Rényi binomial random graph $\mathbb G(n,p)$. Janson, Oleszkiewicz and Ruciński proved that for every $t > 1$\begin{equation*}\exp \{-O_t( M^*_G \ln (1/p))\} \leq \mathbb{P}\{X_G \geq t\,\mathbb{E} X_G\} \leq \exp\{-\Omega_t(M^*_G)\},\end{equation*}where $M^*_G$ is a certain function of $n$ and $p$. For $G = K_3$ the logarithmic gap between the bounds was closed by Chatterjee and, independently, DeMarco and Kahn. We provide matching bounds for strictly balanced $G$, when $\mathbb{E} X_G \leq \ln n$. Also, we give matching bounds for $C_4$, $K_4$, and stars $K_{1,k}$ in a broader range of $\mathbb{E} X_G$. In particular, this improves some results of Janson and Ruciński for which the so called deletion method was used.
Jamming and Geometric Representations of Graphs
Authors: Krauth Werner , Loebl Martin
Published: January 2020

We expose a relationship between jamming and a generalization of Tutte's barycentric embedding. This provides a basis for the systematic treatment of jamming and maximal packing problems on two-dimensional surfaces.
Total Domination and Matching Numbers in Claw-Free Graphs
Authors: Henning Michael A. , Yeo Anders
Published: January 2020

A set $M$ of edges of a graph $G$ is a matching if no two edges in $M$ are incident to the same vertex. The matching number of $G$ is the maximum cardinality of a matching of $G$. A set $S$ of vertices in $G$ is a total dominating set of $G$ if every vertex of $G$ is adjacent to some vertex in $S$. The minimum cardinality of a total dominating set of $G$ is the total domination number of $G$. If $G$ does not contain $K_{1,3}$ as an induced subgraph, then $G$ is said to be claw-free. We observe that the total domination number of every claw-free graph with minimum degree at least three is bounded above by its matching number. In this paper, we use transversals in hypergraphs to characterize connected claw-free graphs with minimum degree at least three that have equal total domination and matching numbers.