bluuebunny/crossref_metadata_2025 huggingface dataset:
¿Intérprete o facilitador de lengua de señas? Una experiencia en el contexto educativo chileno
Authors: Perez Toledo Vanessa , Munoz Vilugrón Karina , Chávez Karina Jazmín
Published: November 2020

La inclusión de estudiantes sordos en aulas regulares ha puesto en evidencia la necesidad del intérprete de lengua de señas chilena como mediador entre dos lenguas, la lengua de señas y la lengua oral. Por ello, el objetivo de este estudio fue analizar la formación y las funciones del intérprete de lengua de señas chilena en el contexto educativo. El instrumento para alcanzar el objetivo fue una entrevista semiestructurada a doce intérpretes de lengua de señas chilena y a tres actores relevantes de este ámbito. Los resultados muestran la informalidad en el proceso de formación. También evidencian funciones prescritas que se distancian de las no prescritas, y una serie de barreras para el servicio de interpretación establecidas por el contexto educativo, de las cuales surge la figura de facilitador de la lengua de señas chilena. Este contribuye a dar respuesta a las necesidades de acceso a los aprendizajes de los estudiantes sordos en contextos educativos.
Las ideologías lingüísticas sobre las lenguas indígenas americanas: una revisión sistemática de artículos de investigación
Authors: Cisternas Irarrázabal César , Olate Vinet Aldo
Published: November 2020

La comprensión de las ideologías lingüísticas es fundamental para la descripción de los procesos de conservación y desplazamiento de las lenguas minorizadas. Este trabajo revisa, de manera sistemática, las publicaciones indexadas en Web of Science que abordan el tópico de las ideologías lingüísticas sobre lenguas indígenas americanas, con el propósito de describir las líneas de investigación, las orientaciones metodológicas, los enfoques teóricos, las tipologías y las conclusiones más relevantes que presentan para el campo. La revisión abarca un rango temporal que se extiende desde 1980 hasta 2016, y produjo 25 artículos. Los resultados muestran que, en las publicaciones, hay una orientación metodológica exclusivamente cualitativa, mientras que, en lo conceptual, se observa una extensa taxonomía de ideologías, que incluye diversas denominaciones para un mismo marco ideológico. También se evidencia la relevancia de las ideologías lingüísticas en procesos como la construcción de la identidad, la revitalización lingüística, la planificación, la valoración de las lenguas, la resistencia identitaria-cultural, entre otros procesos sociolingüísticos y socioculturales.
Case Histories of Selection Criteria for Random Vibration Screening
Authors: Lambert Ronald
Published: November 2020

This paper describes the criteria for selecting the random vibration screening level and duration such that defects are uncovered without consuming significant useful life prior to service use. Miner's Linear Damage Rule is used as the basis for the derived damage expressions. Three real-world case histories are included to demonstrate the application of these criteria.
Air Stripping of Volatile Organics
Authors: Stallings Robert , Rogers Tony , Mullins Michael
Published: November 2020

The Air Force's Installation Restoration Program includes an active research program into treatments for contaminated groundwater. Packed-tower air stripping of volatile organic compounds (VOCs) from groundwater has proven to be a costeffective and efficient method of treatment. The Research Triangle Institute (RTI) has recently participated in a packed-tower air-stripping test program for the Air Force in which 16 organic compounds in a groundwater plume were identified, and the air-stripping behavior of each was examined. The performance of four different commercial packing materials was evaluated for each of the 16 contaminants over a range of gas-liquid flow ratios. The mass transfer coefficients for each of the contaminants were subsequently calculated, and the most effective operating conditions were determined.
Reliability Growth Testing Effectiveness
Authors: Morris Seymour , MacDiarmid Preston
Published: November 2020

The use of reliability growth and test-analyze-and-fix (TAAF) testing has become widespread within the Department of Defense as complements to and substitutes for formal reliability qualification testing (RQT). Many different models, tools and techniques for their use have been presented in the literature, military standards and handbooks. Still, many reliability experts within DoD question the utility and cost effectiveness of reliability growth testing and describe it as rewarding contractors for sloppy initial designs. This paper presents an overview of a Rome Air Development Center (RADC) in-house study whose objective was to fully investigate the subject of reliability growth testing to enable a better understanding by reliability engineers as well as to present guidance for its potential application in the development of Air Force systems.
Liquefied Gaseous Fuels (LGF) Spill Test Facility Program
Authors: Dietz Albert
Published: November 2020

The Department of Energy (DOE) is constructing a facility at the Nevada Test Site (NTS) which will be capable of the rapid release of large quantities of cryogenic or pressurized flammable or toxic materials. The facility is being built in concert with and in response to the needs of many industrial and governmental organizations.

The facility is designed to satisfy the need for information for risk assessment, emergency response, regulation, plant design, plant siting, and hazard mitigation. It will be capable of spilling up to 200 m3 (53,000 gal) of cryogenic fluids such as Liquefied Natural Gas (LNG) or refrigerated ammonia at rates between 5 and 100 m3/min (1,000-26,000 gpm). In addition, up to 90 m3 (24,000 gal) of ambient temperature materials such as Liquefied Petroleum Gas (LPG) or chlorine, with pressures up to 2,000 kpa (300 psi), can be released at rates between 2 and 20 m3/min (500-5,000 gpm). An extensive sensor and data acquisition system is available to acquire data on spill characteristics such as rate, volume, temperature, and pressure; downwind gas concentration and aerosol characteristics; meteorological parameters; and blast or fire effects.

The Frenchman Flat area of the NTS provides a uniquely favorable environment in which to perform large-scale atmospheric dispersion tests. Steady winds from the southwest occur with great regularity during the summer months for a variety of atmospheric stability conditions. Large-scale tests with toxic materials are possible because only limited access, federally controlled land is present for some 60 km (37 mi) downwind.
Reduction of Formaldehyde, Ammonia, SO2, and CO2 Concentrations in Room Air
Authors: Frey Allan
Published: November 2020

Analyses by the writer indicated that complex electrical fields could modify perceived odor and participate distribution. In subsequent experimentation, this was found to be the case. A complementary experiment was undertaken to gather information on the influence of in-duct complex electrical fields on the concentration of several gases: formaldehyde, ammonia, sulphur dioxide, and carbon dioxide. It was found that the complex electrical field reduced each, as compared to controls. The reductions, depending on the gas, ranged up to 49 percent. The strong effect on formaldehyde is of potential practical significance due to its possible human carcinogenicity.
An Experimental Study of Particle Emissions From Cleanroom Papers
Authors: Michaels Linda , Fickel Louise , Donovan Robert
Published: November 2020

Six types of paper, four of which are "cleanroom" papers and two of which are conventional bond papers, were evaluated for aerosol particle emissions in the Texwipe modified flex tester. Under this type of stress, all cleanroom papers emitted significantly fewer particles than the bond papers. Significant differences also existed among the samples of the four cleanroom papers.
Cost Estimation of Solar Simulation Facilities in Europe
Authors: Brinkmann P. , Peeters W.
Published: November 2020

In view of eventual future investments in the field of space simulation facilities, the paper presents a parametric model, which provides ROM (Rough Order Magnitude) cost estimates for solar simulation facilities, with a beam diameter of up to 6m (19.7 ft). The model is based on cost figures of existing European test facilities and shows cost to be proportional to beam size.
A Procedure for Comparing Dynamic Test Severities Based on Equipment Response Characteristics
Authors: Spann Frederick
Published: November 2020

Military specifications contain numerous requirements for qualification of equipment for dynamic environments. Cost and schedule effective application of these specifications require tailoring of these test requirements. This paper presents a technique for tailoring dynamic environment tests based on equipment response characteristics. The dynamic response theory is explained and applied to a procedure for comparing the relative severity of dynamic environmental tests. The procedure is shown using the example of an electronic assembly.
Particle Dispersion in Relation to Clothing
Authors: Whyte William , Bailey P.
Published: November 2020

People are major contributors of particle contamination in cleanrooms and therefore must wear occlusive clothing to reduce their dispersion. Three tests are described which assess the effectiveness of fabrics in filtering body emissions. Also described is a dispersal chamber in which the dispersal rate of a person can be ascertained.

Results from tests on a number of fabrics are given that demonstrate the ineffectiveness of many fabrics. The pore size dia of woven fabrics range from 17 to 103 μm and their removal efficiency against ⩾ 0.5 μm particles from a few percent to 75 percent. A comparison of clothing made from different fabrics in a dispersal chamber showed the close-woven fabrics and non-woven fabrics to be more effective. Fabrics with a low air permeability pumped out unfiltered body emission if care was not exercised in the design of the garment closures.

The greater importance of particles passing through fabrics compared to those coming off fabrics was demonstrated, as was the deterioration of fabrics through use. It was concluded that much of the clothing worn in cleanrooms could be greatly improved.
Environmental Stress Screening: An Integration of Disciplines
Authors: Caruso Henry
Published: November 2020

This article provides guidelines for developing consistent and effective environmental stress screening (ESS) programs for electronic assemblies and systems. Emphasis is on the timely coordination of all concerned technical disciplines to ensure that a complete and unbiased information base will be available to program management for decision making. The technical disciplines involved include Design, Reliability, Environmental, Quality, Test, and Field Engineering. The ESS development program is characterized by three phases: Conceptual Definition, Implementation, and Effectiveness Review. Throughout this process, integration of technical and administrative concerns is essential.
A Clarification of the Shock/Vibration Equivalence in MIL-STD-810D/E
Authors: Caruso Henry , Szymkowiak Edward
Published: November 2020

This paper presents a methodology for expanding the shock/vibration equivalence analysis defined in MIL-STD-810D/E, Method 516.3/516.4, Procedure I (Functional Shock), Paragraph I-3.3. Procedure I defines equivalence only for situations where the vibration response spectrum (VRS) exceeds the shock response spectrum (SRS) everywhere in the specified range of frequencies. This paper supplements the MIL-STD-810D/E methodology with an analytical procedure for evaluating possible equivalence when the SRS is greater than the VRS. Using Miner's Hypothesis, the fatigue damage potential of the vibration cycles above the 3-δ limit is compared with the fatigue damage potential of the shock pulses in each axis. An example is included.
Model Study of Contaminant Flow in the Vicinity of Semiconductor Processing Equipment
Authors: Yamamoto Toshiaki , Viner Andrew , Donovan Robert , Ensor David
Published: November 2020

A continuous particle monitoring system was set up to. identify short-term particle bursts that reflect equipment operation and personnel activity within the photolithography bay of a cleanroom. The frequency and magnitude of the bursts vary with location and strongly depend on airflow, especially departures from vertical laminar flow introduced by equipment placement and/or human traffic. For example, the particle concentration above a stepper electronics cabinet was significantly reduced by moving the cabinet away from the cleanroom wall. Also, the particle concentration above the photoresist coater is very high during the operation of the wafer spinner; therefore, particles generated should be swept away by the airflows in order to minimize the particle transport to the wafer processing area.

Numerical simulation of the airflow around two selected pieces of processing equipment was performed to better explain particle transport from these sources. Zones of recirculation and particle trapping, as predicted by this modeling, were shown to exist near the equipment. The improvement in airflow distributions results in more complete and rapid removal of particles from the vicinity of the equipment.
Random Vibration Analysis of a Printed Wiring Board with Electronic Components
Authors: Roberts Jack , Stillo Debra
Published: November 2020

A printed wiring board (PWB) with electronic components has been modeled using the finite element technique and compared with the same PWB experimentally tested in a chassis during a 2 hr random vibration test. Accelerometers were attached to the PWB in locations where nodes existed in the finite element model (FEM). The FEM predicted the first natural frequency to within 10 percent of the test results. Due to wedge locks that loosened during the test, the PWB accelerations in the finite element model and the test differed by as much as 40 percent. The ceramic capacitor on the PWB was modeled in detail with leads attached to the PWB to examine bending stresses in the leads. During the 2 hr test there were no failures for those leads with adequate solder joints. A failure did occur, however, on a lead with insufficient solder. A fatigue analysis of the FEM lead bending stresses indicated lead failure if no solder was used, whereas no failures were predicted for properly soldered leads.
Minimizing Defects for a Silicon Nitride Deposition Process
Authors: Wilson Jim , DcPinto Gary
Published: November 2020

Full factorial and Taguchi orthogonal arrays were used to characterize the silicon nitride low pressure chemical vapor deposition (LPCVD) process for film uniformity and particle density. Thickness and refractive index were measured using standard ellipsometric techniques. Particles were measured on patterned wafers using a Tencor Surfscan 7000 particle counter with pattern recognition capability. Both design methodologies produced identical results, with particles most dependent on total gas volume, and uniformity of the deposited film dependent on NH3:DCS (ammonia:dichlorosilane) gas ratio. Particle counts were minimized at both 4:1 and 6:1 NH3:DCS ratios and by reducing the total gas volume 10 percent, while uniformity continually improved as a 6:1 ratio was approached. It was learned that it is possible to choose an NH3:DCS gas ratio of 6:1 that simultaneously optimizes particles and film uniformity.

The use of statistical process control (SPC) methods to improve process capability as measured by process capability (Cp) were employed to measure an overall increase in Cp from 1.1 to 1.5 for film uniformity. Implementation of the new process resulted in a 2.5-fold reduction in particle counts.
Tailoring Shipboard Environmental Specifications: Part II. Single-Frequency Vibration
Authors: Chalmers Richard
Published: November 2020

This article, the second in a three-part series, is extracted from Technical Document (TD 2071) published by the Naval Ocean Systems Center in April, 1991. Titled "Tailoring Shipboard Environmental Specifications, A Guide for Navy Program Managers," the document presents a compilation of shipboard environmental data measured over the years. The applicability of the data to the fleet of today is discussed. Methods of tailoring systems specifications and tests for the environment existing at given locations on a variety of Naval ships are also included.

The first article in this series (Journal of the IES, p. 25. March, April, 1992) included the Introduction, Temperature and Humidity, and Shock sections of TD 2071. This article covers the first part of the TD 2071 discussion of vibration. The third article will finish the discussion of vibration and present a "tailored" vibration requirement that a program manager might include in a procurement package for new shipboard systems.
Characteristics of Particle Deposition on Disks in Disk Drives
Authors: Tzeng H.
Published: November 2020

The characteristics of particle deposition on disk surfaces in hard disk drives (HDDs) was studied. The density of tracer particles deposited on the disks was measured to determine the deposition profile. The circumferentially averaged deposition density increases monotonically with radius. The number of deposited particles on the two outermost disk surfaces is more than twice that on other disk surfaces in the HDD. An obstruction to the flow unequally enhances the particle deposition on the disk: 15 percent to the two outermost surfaces, and 55 percent to the other surfaces. These features can be explained satisfactorily by the airflow characteristics in the HDD.
Leveling Coatings for Reducing Atomic Oxygen Defect Density in Graphite Fiber-Epoxy Composites
Authors: Jaworske D. , de Groh K. , Podojil G. , McCollum T. , Anzic J.
Published: November 2020

Pinholes or other defect sites in a protective oxide coating provide pathways for atomic oxygen in low-Earth orbit to reach underlying material. Onc concept for enhancing the lifetime of materials in low-Earth orbit is to apply a leveling coating to the material prior to applying any reflective and protective coatings. Using a surface-tension-leveling coating concept, a low-viscosity epoxy was applied to the surface of several composite coupons. A protective layer of 1000 Å of SiO2 was deposited on top of the leveling coating, and the coupons were exposed to an atomic oxygen environment in a plasma asher. Pinhole populations per unit area were estimated by counting the number of undercut sites observed by scanning electron microscopy. Defect density values of 180,000 defects/cm2 were reduced to about 1000 defects/cm2 as a result of the applied leveling coating. These improvements occur at a mass penalty of about 2.5 mg/cm2.
Temperature Spectrums of an Automotive Environment for Fatigue Reliability Analysis
Authors: Hu Jimmy , Salisbury Ken
Published: November 2020

The temperature spectrum of an automotive environment is a necessary input to predict thermal fatigue life, to estimate product reliability, and to specify accelerated thermal cycle testing for automotive components. This paper investigates the temperature profiles of electronic products located in the engine compartment (EC), the engine-mounted (EM) area, and the passenger/luggage (P/L) compartment, and develops the nominal temperature spectrums for these vehicle locations. The daily climatic temperatures of various geographical areas in the U.S. are analyzed. The effects of sun exposure and operational heat dissipation on the maximum temperature in three vehicle compartments are investigated. Due to the proportionality of mechanical stress/strain ranges and temperature ranges, the temperature spectrums are constructed by using the rainflow method for fatigue cycle counting.
Vibration Design Criteria for COTS-Based C4I Systems
Authors: Normandy R. , Yowell Lindsay
Published: November 2020

This paper describes results of a planned comprehensive test program to identify the realistic dynamic environment commercial off-the-shelf (COTS) equipment will experience when utilized in Military Ground Mobile Command Control, Communication, Computer, and Intelligence (C4I) systems housed in DoD Standard Family Tactical Shelters. COTS equipment are generally designed for office use and lack robustness for military use in a ground mobile tactical environment. A realistic dynamic design criteria must be utilized for an appropriate mounting and/or isolation system design in the integration of a shelter. Acceleration spectral density functions are described to assist the designer in providing a COTS-based, survivable, cost-effective ground mobile tactical shelter-based C4I System.
Up-regulation of interleukin-33 serum levels in metastatic prostate cancer
Authors: Zheng Xiaoli , Chu Jin
Published: November 2020

Prostate cancer is one of the most frequent cancers worldwide. IL-33 is the most recently described member of the IL-1 family of cytokines and is a ligand for the ST2 receptor. IL-33 is expressed intracellularly predominantly by stromal cells such as endothelial and epithelial cells as well as smooth muscle cells and fibroblasts and it is involved in the pathogenesis of different inflammatory process. The present study was undertaken to evaluate the prognostic significance of the serum levels IL-33 in patients with prostate cancer Ninety-five patients with prostate cancer, ages 59–88 years (71.2 ± 0.34 years), were examined in the present study, the exclusion criteria were presence of autoimmune diseases and none were under any treatment for prostate cancer at the time of examination. The diagnosis of prostate cancer was confirmed by needle biopsy or by C. Blood for the measurement of serum IL-33 was collected into nonheparinized tubes. Prognostic significance of tumor on disease-specific survival was assessed using univariate and multivariate Cox’s proportional hazards model analyses. Serum IL-33 levels were significantly higher in patients with metastatic prostate cancer than in patients with stage B and stage C prostate cancer, and univariate analysis demonstrated that IL-33 was associated with a poor prognosis in metastatic prostate cancer patients. These results indicate that the serum IL-33 level may be associated with the prognosis of patients with prostate cancer.
Macroeconomic determinants of Port and Douro wine exports: An econometric approach
Authors: Macedo Anthony , Gouveia Sofia , Rebelo João
Published: November 2020

This study analyses recent trends (2006-2018) in Port and Douro wine exports and estimates their macroeconomic determinants. The results of the gravity equation reveal that the purchasing power in importing countries is the most important export determinant of Port and Douro wines. Therefore, in order to increase exports, the strategic decision-makers concerned with the industry should pay special attention to the markets in wealthier countries or with a high potential for economic growth, taking into account issues such as market access, adaptation to the market to wine consumption, and regulation.
MULTISENSOR OPTICAL SYSTEM FOR NON-INVASIVE MONITORING OF THE HUMAN OXYGEN BODY DURING FUNC-TIONAL STRESS
Authors:   Institute for Analytical Instrumentation of RAS,  Saint Petersburg, Russia, Zaitceva A. Yu. , Mazing М. S. ,   Institute for Analytical Instrumentation of RAS,  Saint Petersburg, Russia,   Peter the Great Saint Petersburg Polytechnic University, Saint Petersburg,  Russia, Kislyakov Yu. Ya. ,   Institute for Analytical Instrumentation of RAS,  Saint Petersburg, Russia
Published: November 2020

This work was performed using optical spectroscopy methods. The proposed method is based on the differences in the absorption spectra of oxyhemoglobin and reduced hemoglobin, as well as on the analysis of the response of the system using mathematical methods for processing multidimensional data. In the course of the work, a prototype of the diagnostic optical system for non-invasive monitoring of the oxygen supply of human tissues was created, which is based on a multi-channel optical spectrum analyzer. As a result of experimental studies, it was shown that each subject has his own individual, reproducible "image". The results of the study confirm the effectiveness of the proposed method for assessing the functional state of a person and the prospects for its use in practical medicine.
Comparison of effectiveness and safety outcomes of abiraterone versus enzalutamide in patients with metastatic castration-resistant prostate cancer: a systematic review and meta-analysis
Authors: Wang Xin , Hui Yang , Wang Shihui , Hu Xiaopeng , Yu Xiaojia , Wang Wei , Zhang Xiaodong , Liu Lihong
Published: November 2020

Purpose: To compare the effectiveness and safety between abiraterone and enzalutamide in the treatment of patients with metastatic castration-resistant prostate cancer (mCRPC). Methods: We systematically searched for relevant articles from PubMed, Cochrane, Embase from their inception through November 4, 2019. Available articles from conferences were searched. The endpoints were prostate-specific antigen (PSA) response, overall survival (OS), progression-free survival (PFS), number of patients with any adverse event (AE). Results: 15 cohort studies involving 3546 participants were included in this meta-analysis. Pooled result showed that PSA response rate in the enzalutamide group was significantly greater than that in the abiraterone group (867 patients, risk ratio (RR) 0.69, 95% confidence interval (CI) 0.61-0.79, p＜0.00001, I2=29%). There was no significant difference in the total incidence of AEs between two groups (730 patients, RR 0.42, 95% CI 0.14-1.31, p = 0.14, I2=84%). The common adverse events observed in the published articles were fatigue and perceived cognitive impairments. Patients who received enzalutamide had the higher risk to have the feeling of fatigue compared with abiraterone group (2555 patients, RR 0.45, 95% CI 0.24-0.85, p=0.01, I2=92%). And there was no statistical difference between two groups respect to the side effect of perceived cognitive impairments (1856 patients, RR 0.94, 95% CI 0.47-1.88, p=0.85, I2=15%). Conclusions: Our results demonstrated that enzalutamide was associated with higher PSA response rate compared to abiraterone in patients with mCRPC, and no significant difference was found between two groups in the overall AE. But enzalutamide use induced higher risk of the AE of fatigue.
VARIÁVEIS SOCIODEMOGRÁFICAS ASSOCIADAS À MUDANÇA NA TOLERÂNCIA NAS RELAÇÕES DE AMIZADE NA PANDEMIA PELA COVID-19
Authors: Moraes Filho Iel Marciano , Sousa Thais Vilela de , Lima Thaís Pereira , Carvalho Filha Francidalma Soares Sousa , Pereira Mayara Cândida , Silva Rodrigo Marques da
Published: November 2020

Objetivo: verificar a associação entre variáveis sociodemográficas e mudança na  tolerância nas relações de amizade durante a pandemia pela COVID-19. Método: estudo transversal realizado nas cinco macrorregiões brasileiras, de junho a julho de 2020, mediante aplicação de um questionário sociodemográfico, um questionário semiestruturado e o Instrumento de Avaliação da tolerância nas relações de amizade. Utilizou-se o teste qui-quadrado e exato de Fischer para a análise de dados. Resultados: 88,9% consideram satisfatória a tolerância nas relações no ambiente domiciliar, 82,8% tiveram ajuda de amigos para superar as tensões, 73% perceberam mudança nas relações durante a quarentena. Essa mudança foi maior entre heterossexuais (p=0,001), residentes no Sudeste e Centro-Oeste (p=0,001), com ensino superior concluído (p=0,004), vinculados a instituições privadas (p<0,001) e que receberam ajuda dos amigos durante a quarentena (p<0,001). Conclusão: os fatores sociodemográficos e o suporte social recebido dos amigos estão associados às mudanças na tolerância nas relações de amizade durante a pandemia.

Descritores: Relações Interpessoais. Amigos. COVID-19. Pandemias. Isolamento Social.
Evaluation of Silver Phytotoxicity on Soils of Different Stability: Brown Forest, Chernozem and Sierosands
Authors: Tsepina N.I. , Minnikova T.V. , Kolesnikov S.I. , Kazeev K.Sh.
Published: November 2020

The effect of silver pollution on the phytotoxicity of soils of varying degrees of resistance: chernozems, sierosands and brown forest soils was investigated. A direct relationship was observed between the concentration of the element in the soil and the length of the radish roots. At a silver concentration of 10 mg/kg, the highest toxicity was established on sulphurous sand and brown forest soil. A dose of 100 mg/kg had the greatest inhibitory effect on the length of the roots of radishes grown on ordinary chernozem, sierosands, and brown forest soil at 17, 24, and 29 % of the control, respectively. According to the degree of resistance to silver pollution, according to the radish root length indicator, the studied soils form the following series: ordinary chernozem (90) ≥ sierosands (88) > brown forest soil (81). The toxic effect of silver depends on the concentration of the element in the soil, the particle size distribution, the reaction of the soil environment and the content of organic matter in the soil. The greatest resistance of common chernozem to silver contamination is due to the particle size distribution, high humus content (3.7 %) and neutral alkaline-acid conditions (pH = 7.8). The light particle size distribution of the sierosands does not provide a sufficient absorption capacity for fixing silver in the soil. Brown forest soil is most sensitive to silver, as it has an acidic soil reaction (pH = 5.8), in which this element is mobile and has a toxic effect on the radish root system.
On Some Classes of Correct Problems in the Membrane Theory of Convex Shells
Authors: Tyurikov E.V.
Published: November 2020

On the basis of the theory of the modified Riemann-Hilbert problem for generalized analytic functions, a geometric description is given of a fairly wide family of correct by I. N. Vekua of boundary value problems of the membrane theory of convex hulls with a piecewise smooth boundary. Solutions to the corresponding Riemann-Hilbert problem for an elliptic system of equilibrium equations are found in the classes of N.I. Muskhelishvili and realize a state of tense equilibrium under the condition of stress concentration in corner points. An effective formula is given for calculating the index of the boundary condition, which allows us to formulate the results in a visible form. Families of shells are found for which the solvability picture of the main boundary-value problem coincides with the solvability picture of the Vekua problem for shells with a smooth border.
The Role of Slope Runoff in Flooding of Settlements in the Foothills of the Krasnodar Region When Local Rainstorms Fall (on the Example of Bagovskaya Village on May 20, 2019)
Authors: Tkachenko Yu.Yu. , Denisov V.I. , Perov E.A.
Published: November 2020

In the articles the authors have assessed the role of slope runoff formed during local storm precipitation in flooding of settlements in the foothill part of the region using the example of flooding of a part of the territory of the Bagovskaya village in the Krasnodar region on May 20, 2019. Hydrometeorological conditions that contribute to the formation of intensive slope runoff have been considered. It was identified that in the case of the development of the elementary circulation mechanism, the probability of local rainfall increases in the territory of the region, the intensity of which in the foothill zone can reach more than 100 mm/day. Precipitation is, as a rule, are of an areal character, but the field distribution of precipitation is uneven. In the case of major precipitation in the high-altitude zone of 300-700 m, rivers cope with the passage of rainwater and flooding of settlements occurs because of the slope runoff coming from the surrounding slopes. In the case of precipitation intensity of 10 mm/10 min the flow modulus is 16.7 m3/skm2. When intense precipitation shifts to a high-altitude zone of more than 1000 m, a flood occurs on rivers and watercourses. In this case, flooding of localities will occur first as a result of runoff of slope drains, and then, as a result of rising water levels in the river, above dangerous levels.
Ukrainian Information Flows in the Crimean Internet Segment: Analysis of Online Content and Media Agenda During the Period of 2014-2020
Authors: Yarmak O.V. , Tsepkova A.S. , Kalinskaya I.L.
Published: November 2020

The article presents a comprehensive analysis of the activities of the Ukrainian information network in the Crimean Internet segment. In particular, the authors analyze the methods and mechanisms of the work of the Ukrainian authorities with the inhabitants of the peninsula, the results of monitoring the presence of the Ukrainian media agenda in the Crimean Internet space. The relevance of this study is due to a number of factors: political - rejection of the events of the Crimean Spring, the referendum and reunification with Russia both in the international and in the Ukrainian field; economic - a decline in the quality and standard of living of the Ukrainian population with economic stability in Crimea and infrastructural reorganization of the peninsula, the rupture of economic, energy, resource ties between Ukraine and Russia, including Crimea; information and propaganda - the need to implement counter-propaganda measures on the part of Crimea in connection with the strengthening of extremist propaganda aimed at the inhabitants of the peninsula. The results of the study, carried out with the financial support of the RFFR within the framework of the scientific project No. 18-011-00937\20 “Ukrainian information flows in the Crimean segment of social media: risks and technologies for overcoming the negative effects of anti-Russian rhetoric in the online environment”, showed the existing differentiation of online communities in the Crimean Internet segment, the preservation of the negative tone of Ukrainian information flows within the Crimean discourse with the emergence of unifying topics, the structuredness of the media agenda of Ukraine, focused on the inhabitants of Crimea.
On the Competence of Internal Affairs (Police) Agencies in the Prevention and Suppression of Administrative Offenses Committed by Minors
Authors:   Professor of the Department of Administrative Activities of Internal Affairs Agencies of the Voronezh Institute of the Ministry of Internal Affairs of Russia PhD (Law), Professor, Zanina Tatyana M. , Butova Maria V. ,   Junior Scientific Assistant of the Voronezh Institute of the Ministry of Internal Affairs of Russia
Published: November 2020

The article is devoted to the interpretation of such effective forms of administrative influence on a minor offender as «administrative prevention» and «administrative suppression». The author reveals the conceptual apparatus, the essence and features of their application by practical employees.
Some Issues of Proceedings in Cases on the Contestation of Legal Acts of Administration in Administrative Proceedings
Authors:   Head of the Department of State, Civil and Legal Disciplines of the North Caucasian Institute of Advanced Training (Branch) of the Krasnodar University of the Ministry of the Interior of Russia PhD (Law), Associate Professor, Kanunnikova Natalya G.
Published: November 2020

Legal acts of administration are of great importance for the society and state in the modern world, the publication of such acts is the main form of the administrative process. Administrative acts turn the state policy into a reality, perform functions of executive government authorities. However, such acts often violate rights and legitimate interests of individuals and legal entities and thus may be contested by interested parties in administrative proceedings.
Administrative Liability for Offenses Related to Labor Relations in View of the Coming Adoption of a New Administrative Offense Code of the Russian Federation
Authors:   Leading Research Scientist of the Department of Administrative Law and Administrative Procedure of the Institute of State and Law of the Russian Academy of Sciences LL.D., Professor, Grishkovets Aleksey A.
Published: November 2020

The author of the article analyzes theses of project of new Code of Russian Federation about administrative offence sphere labour relationships. To authors mind norms of administrative law and labour law interact closely as a result their systematically using in some spheres of legal regulation. One of them is sphere of administrative responsibility for offence in sphere of labour relationships. The author compares appropriate norms of acting Code of Russian Federation about administrative offence with project of new Code.
The Peculiarities of the Content of the Administrative Law Protection of Civil Rights and Legitimate Interests in the Defense and Security of the Russian Federation by Judicial Means
Authors:   Expert of the Center for Expert Studies of the Faculty of National Security of the Russian Presidential Academy of National Economy and Public Administration PhD (Law), Class 3 Counsellor of Justice, Fedotova Yulia G.
Published: November 2020

The article is devoted to the execution of the identification of features of administrative-legal protection of the rights and legitimate interests of citizens in the field of defense and security of the Russian Federation in a judicial proceeding. The author reveals its elements (form, method, means, measure, institution, mechanism) and describes the advantages of the judicial procedure for such protection of citizens.
Non-Profit-Making Organizations Performing Functions of a Foreign Agent in the System of Non-Profit-Making Organizations: An Administrative Law Aspect
Authors:   Degree-Seeking Student of the Department of Administrative and Municipal Law of the Saratov State Law Academy, Degtyareva Anastasia A.
Published: November 2020

The article is devoted to determining the place of non-profit organizations that perform the functions of a foreign agent in the system of non-profit organizations. Relevance of article is determined by the tasks of improvement of legislation on NGOs, including the need to adjust the rules to balance the interests of national security of the Russian Federation and the rights and legitimate interests of non-profit organizations, which have additional responsibilities. In the current legislation, the definition of a non-profit organization performing the functions of a foreign agent is not sufficiently defined; the very use of the term “foreign agents” also controversial.
Book Review--Undergraduate Research & the Academic Librarian: Case Studies and Best Practices
Authors:   Penn State University, Fargo Hailley
Published: November 2020

The book explores ways to amplify and showcase best practices for collaborations between librarians and undergraduate researchers, inspiring and strengthening these partnerships. Cases span a range of topics such as undergraduate research within the curriculum, exhibitions and symposia, undergraduate research journals, and ways of supporting honors theses.
Introduction
Authors:   Middlebury College, Gates Lisa
Published: November 2020

Issue editor Lisa Gates provides an overview of SPUR fall 2020, vol. 4, no. 1.
An Undergraduate Research Approach That Increased Student Success at a Hispanic-Serving Institution (HSI): The SURE Program at Texas State University
Authors:   Lamar University, Brown Daniel A. , Wright Nina B. ,   Texas State University, Gonzales Sylvia T. ,   Texas State University, Weimer Nicholas E. ,   Texas State University, Soto Julio G. ,   San Jose State University
Published: November 2020

The STEM Undergraduate Summer Research Experience (SURE) Program provides a holistic approach to undergraduate summer student research to increase student success at the Hispanic-serving Texas State University. Re the 2017–2019 cohorts (composed of 62 undergraduates), 97 percent persisted after the summer program. After the SURE Program, overall and STEM GPAs were higher in the 2017–2019 cohorts as compared to the control group. Thirty-nine percent are attending graduate or professional programs.
Adapting an Interdisciplinary, Course-Based Undergraduate Research Experience (CURE) Course to an Online Format
Authors:   Elmhurst University, Majka Elizabeth A. , Raimondi Stacey L. , Guenther Merrilee F.
Published: November 2020

August 2020 marked the inaugural CURE Science Bootcamp course. Due to COVID-19 restrictions, the entire bootcamp was taught virtually on a synchronous schedule using the learning management system Blackboard Collaborate Ultra. STEM transfer students completed all key elements of the traditional Science Bootcamp, with slight modifications due to the compressed schedule. In topic selection, students were nudged toward viable methodologies, given that in-person data collection was prohibited.
Estudio comparativo de facilidades y obstáculos de las mipymes exportadoras en el estado de Guanajuato de México y en la provincia de limón de Costa Rica
Authors: Peart Harris Kenishia
Published: November 2020

Con este estudio se pretende comparar las principales facilidades y obstáculos que enfrentanlas mi pymes exportadoras del Estado de Guanajuato, México y de la Provincia de Limón,Costa Rica.Se intentó identificar si existen similitudes o diferencias entre las facilidades y obstáculos quepresentan las Mi pymes exportadoras del Estado de Guanajuato, México y de la Provincia deLimón, Costa Rica.El estudio va dirigido a todo aquel que exporta o tiene deseos de exportar, ya que les daráherramientas útiles e información para comprender un poco el ámbito de las exportaciones enMéxico y Costa Rica.Se utilizó el método de a entrevista para recabar la información necesaria con una muestra noprobabilística o dirigida por conveniencia.Se obtuvieron los siguientes resultados por indicador:En limón se encuentran micro, pequeñas y medianas empresas mientras que en Guanajuatosolo se encuentran pequeñas y medianas empresas. En Guanajuato y en Limón las empresaspertenecen a los sectores industrial y comercial. Tienen la similitud de que exportan vegetales.Las pymes en el estado de Guanajuato comenzaron sus actividades de exportación tiempoantes que las mipymes de Limón. Las empresas cuentan con capital propio y presentansimilitudes y diferencias en cuanto a retos al exportar, normas de calidad y los mecanismos decontrol de procesos que utilizan.
TEACHERS’ ATTITUDES TOWARDS AUTHENTIC MATERIALS IN TEACHING ANGLOPHONE CULTURE TO YOUNG LEARNERS
Authors: Radić-Bojanić Biljana B.
Published: November 2020

The paper aims at presenting the current attitudes and opinions of teachers who teach the English language to young learners in public elementary schools in Serbia, with special reference to the use of authentic materials in teaching culture. First, a theoretical framework for teaching culture to young learners with authentic materials is established, which is followed by the results of the research based on a focus group interview, where the focus group consisted of teachers who taught English to young learners in public elementary schools. In addition to revealing the informants’ attitudes and beliefs, the results could implicitly point to the teachers’ classroom practice and indicate professional areas that could be improved through professional development seminars.
Niepomijalność administracji samorządowej w zapewnieniu publicznego transportu zbiorowego
Authors: Błażewski Maciej
Published: November 2020

Zapewnienie transportu zbiorowego jest jednym z zadań własnych jednostek samorządu terytorialnego. Podmioty te zapewniają transport zbiorowy, świadcząc usługi transportowe lub nadzorując ich wykonywanie przez prywatnych przewoźników. Ingerencja jednostek samorządu terytorialnego w ten proces służy zachowaniu jakości, ciągłości i powszechności usług transportowych.
Futebol na Amazônia: A produção acadêmica do Curso de Educação Física da Universidade do Estado do Pará
Authors:   UEPA, da Silva Mendes Delson Eduardo , Martins de Souza Divaldo
Published: November 2020

Esta coletânea de produção cientifica sobre o Futebol, busca uma organização do Conhecimento dentro de uma trajetória de tempo, foi produzida e elaborada por vários discentes do Curso de Licenciatura em Educação Física da Universidade do Estado do Pará, sob a orientação dos docentes Divaldo Martins de Souza e Delson Mendes, visando subsidiar os profissionais envolvidos com o esporte que inebria milhões e milhões de pessoas no mundo, o nosso tão amado futebol.
The Mass-gap in Quantum Chromodynamics and a Restriction on Gluon Masses
Authors: Larin S. A.
Published: November 2020

We prove that it is necessary to introduce the non-zero gluon masses into the fundamental Lagrangian of Quantum Chromodynamis in order to describe the mass-gap in the reaction of electron-positron annihilation into hadrons. A mew restriction on the gluon masses is obtained. The renormalized theory with non-zero Lagrangian gluon masses is constructed.
Proanthocyanidins and Flavan-3-ols in the Prevention and Treatment of Periodontitis - Antibacterial Effects.
Authors: Nawrot-Hadzik Izabela , Matkowski Adam , Hadzik Jakub , Dobrowolska-Czopor Barbara , Olchowy Cyprian , Dominiak Marzena , Kubasiewicz-Ross Paweł
Published: November 2020

Flavan-3-ols and their oligomeric forms called proanthocyanidins are polyphenolic compounds occurring in several foodstuffs and in many medicinal herbs. Their consumption is associated with numerous health benefits. Their bioactivities include antioxidant, anti-inflammatory, cytoprotective, as well as antimicrobial. The latter property is important in prevention and treatment of periodontal diseases. Periodontitis is a multifactorial polymicrobial infection characterized by a destructive inflammatory process affecting the periodontium. Using non-toxic and efficient natural products such as flavanol derivatives can significantly contribute to alleviating of periodontitis symptoms and prevent the disease progress. In this paper, we systematically review the state-of-the art in antibacterial effects of these compounds from the viewpoint of gum health. There is a significant evidence supporting an importance of antibacterial action exerted by proanthocyanidins from edible fruits, tea and medicinal herbs in inhibition of periodontitis-causing pathogens.
Rumor Detection Based on SAGNN: Simplified Aggregation Graph Neural Networks
Authors: Zhang Liang , Li Jingqun , Zhou Bin , Jia Yan
Published: November 2020

Identifying fake news on the media has been an important issue. This is especially true considering the wide spread of rumors on the popular social networks such as Twitter. Various kinds of techniques have been proposed to detect rumors. In this work, we study the application of graph neural networks for the task of rumor detection, and present a simplified new architecture to classify rumors. Numerical experiments show that the proposed simple network has comparable to or even better performance than state-of-the art graph convolutional networks, while having significantly reduced the computational complexity.
On the Combined Role of Strong and Electroweak Interactions in Understanding Nuclear Binding Energy Scheme
Authors: U.V Satya Seshavatharam , S. Lakshminarayana
Published: November 2020

With reference to proposed 4G model of final unification and strong interaction, recently we have developed a unified nuclear binding energy scheme with four simple terms, one energy coefficient of 10.1 MeV and two small numbers 0.0016 and 0.0019. In this paper, by eliminating the number 0.0019, we try to fine tune the estimation procedure of number of free or unbound nucleons pertaining to the second term with an energy coefficient of 11.9 MeV. It seems that, some kind of electroweak interaction is playing a strange role in maintaining free or unbound nucleons within the nucleus. It is possible to say that, strong interaction plays a vital role in increasing nuclear binding energy and electroweak interaction plays a vital role in reducing nuclear binding energy. Interesting observation is that, Z can be considered as a characteristic representation of range of number of bound isotopes of Z. For medium, heavy and super heavy atoms, beginning and ending mass numbers pertaining to bound states can be understood with 2Z+0.004Z^2 and 3Z+0.004Z^2 respectively. With further study, neutron drip lines can be understood. Based on this kind of data fitting procedure, existence of our 4G model of electroweak fermion of rest energy 584.725 GeV can be confirmed indirectly.