bluuebunny/crossref_metadata_2025 huggingface dataset:
Annualization of Renewable Investment Costs for Finite Horizon Electricity Pricing and Cost Recovery
Authors: Campos Fco. Alberto , Villar José , Centeno Efraim
Published: February 2021

The increasing penetration of renewable electricity generation is complicating the bidding and estimating processes of electricity prices, partly due to the shift of the overall cost sensitivity from operation (fuel) costs to investment costs. However, cost minimization models for capacity expansion are frequently based on the principle that, for a perfectly adapted system allowing non-served energy, marginal remuneration allows overall operation and investments costs recovery. In addition, these models are usually formulated as finite-horizon problems when they should be theoretically solved for infinite horizons under the assumption of companies’ infinite lifespan, but infinite horizon cannot be dealt with mathematical programming since it requires finite sets. Previous approaches have tried to overcome this drawback with finite horizon models that tend asymptotically to the original infinite ones and, in many cases, the investment costs are annualized based on the plants’ lifespan, sometimes including a cost residual value. This paper proposes a novel approach with a finite horizon that guarantees the investment costs’ recovery. It is also able to obtain the marginal electricity costs of the original infinite horizon model, without the need for residual values or non-served energy. This new approach is especially suited for long-term electricity pricing with investments in renewable assets when non-served demand is banned or when no explicit capacity remuneration mechanisms are considered.
Human Symmetry Uncertainty Detected by a Self-Organizing Neural Network Map
Authors: Dresp-Langley Birgitta , Wandeto John M.
Published: February 2021

Symmetry in biological and physical systems is a product of self-organization driven by evolutionary processes, or mechanical systems under constraints. Symmetry-based feature extraction or representation by neural networks may unravel the most informative contents in large image databases. Despite significant achievements of artificial intelligence in recognition and classification of regular patterns, the problem of uncertainty remains a major challenge in ambiguous data. In this study, we present an artificial neural network that detects symmetry uncertainty states in human observers. To this end, we exploit a neural network metric in the output of a biologically inspired Self-Organizing Map Quantization Error (SOM-QE). Shape pairs with perfect geometry mirror symmetry but a non-homogenous appearance, caused by local variations in hue, saturation, or lightness within and/or across the shapes in a given pair produce, as shown here, a longer choice response time (RT) for “yes” responses relative to symmetry. These data are consistently mirrored by the variations in the SOM-QE from unsupervised neural network analysis of the same stimulus images. The neural network metric is thus capable of detecting and scaling human symmetry uncertainty in response to patterns. Such capacity is tightly linked to the metric’s proven selectivity to local contrast and color variations in large and highly complex image data.
Finite-Size Effects with Boundary Conditions on Bose-Einstein Condensation
Authors: Cheng Run , Wang Qian-Yi , Wang Yong-Long , Zong Hong-Shi
Published: February 2021

We investigate the statistical distribution for ideal Bose gases with constant particle density in the 3D box of volume V=L3. By changing linear size L and imposing different boundary conditions on the system, we present a numerical analysis on the characteristic temperature and condensate fraction and find that a smaller linear size is efficient to increase the characteristic temperature and condensate fraction. Moreover, there is a singularity under the antiperiodic boundary condition.
Fluctuating Asymmetry and Sexual Dimorphism in Human Facial Morphology: A Multi-Variate Study
Authors: Ekrami Omid , Claes Peter , Van Assche Ellen , Shriver Mark , Weinberg Seth , Marazita Mary , Walsh Susan , Van Dongen Stefan
Published: February 2021

(1) Background: Fluctuating asymmetry is often used as an indicator of developmental instability, and is proposed as a signal of genetic quality. The display of prominent masculine phenotypic features, which are a direct result of high androgen levels, is also believed to be a sign of genetic quality, as these hormones may act as immunosuppressants. Fluctuating asymmetry and masculinity are therefore expected to covary. However, there is lack of strong evidence in the literature regarding this hypothesis. (2) Materials and methods: In this study, we examined a large dataset of high-density 3D facial scans of 1260 adults (630 males and 630 females). We mapped a high-density 3D facial mask onto the facial scans in order to obtain a high number of quasi-landmarks on the faces. Multi-dimensional measures of fluctuating asymmetry were extracted from the landmarks using Principal Component Analysis, and masculinity/femininity scores were obtained for each face using Partial Least Squares. The possible correlation between these two qualities was then examined using Pearson’s coefficient and Canonical Correlation Analysis. (3) Results: We found no correlation between fluctuating asymmetry and masculinity in men. However, a weak but significant correlation was found between average fluctuating asymmetry and masculinity in women, in which feminine faces had higher levels of fluctuating asymmetry on average. This correlation could possibly point to genetic quality as an underlying mechanism for both asymmetry and masculinity; however, it might also be driven by other fitness or life history traits, such as fertility. (4) Conclusions: Our results question the idea that fluctuating asymmetry and masculinity should be (more strongly) correlated in men, which is in line with the recent literature. Future studies should possibly focus more on the evolutionary relevance of the observed correlation in women.
Potentially Toxic Planktic and Benthic Cyanobacteria in Slovenian Freshwater Bodies: Detection by Quantitative PCR
Authors: Zupančič Maša , Kogovšek Polona , Šter Tadeja , Remec Rekar Špela , Cerasino Leonardo , Baebler Špela , Krivograd Klemenčič Aleksandra , Eleršek Tina
Published: February 2021

Due to increased frequency of cyanobacterial blooms and emerging evidence of cyanotoxicity in biofilm, reliable methods for early cyanotoxin threat detection are of major importance for protection of human, animal and environmental health. To complement the current methods of risk assessment, this study aimed to evaluate selected qPCR assays for detection of potentially toxic cyanobacteria in environmental samples. In the course of one year, 25 plankton and 23 biofilm samples were collected from 15 water bodies in Slovenia. Three different analyses were performed and compared to each other; qPCR targeting mcyE, cyrJ and sxtA genes involved in cyanotoxin production, LC-MS/MS quantifying microcystin, cylindrospermopsin and saxitoxin concentration, and microscopic analyses identifying potentially toxic cyanobacterial taxa. qPCR analyses detected potentially toxic Microcystis in 10 lake plankton samples, and potentially toxic Planktothrix cells in 12 lake plankton and one lake biofilm sample. A positive correlation was observed between numbers of mcyE gene copies and microcystin concentrations. Potential cylindrospermopsin- and saxitoxin-producers were detected in three and seven lake biofilm samples, respectively. The study demonstrated a potential for cyanotoxin production that was left undetected by traditional methods in both plankton and biofilm samples. Thus, the qPCR method could be useful in regular monitoring of water bodies to improve risk assessment and enable timely measures.
Extracts Prepared from a Canadian Toxic Plant Induce Light-Dependent Perinuclear Vacuoles in Human Cells
Authors: Tuescher Jan M. , Beck Chad R. , Spencer Locke , Yeremy Benjamin , Shi Yutong , Andersen Raymond J. , Golsteyn Roy M.
Published: February 2021

We are investigating plant species from the Canadian prairie ecological zone by phenotypic cell assays to discover toxins of biological interest. We provide the first report of the effects of extracts prepared from the shrub Symphoricarpos occidentalis in several human cell lines. S. occidentalis (Caprifoliaceae) extracts are cytotoxic, and, strikingly, treated cells undergo light-dependent vacuolation near the nucleus. The range of irradiation is present in standard ambient light and lies in the visible range (400-700 nm). Vacuolization in treated cells can be induced with specific wavelengths of 408 or 660 nm at 1 J/cm2 energies. Vacuolated cells show a striking phenotype of a large perinuclear vacuole (nuclear associated vacuole, NAV) that is distinct from vesicles observed by treatment with an autophagy-inducing agent. Treatment with S. occidentalis extracts and light induces an intense lamin A/C signal at the junction of a nuclear vacuole and the nucleus. Further study of S. occidentalis extracts and vacuolation provide chemical tools that may contribute to the understanding of nuclear envelope organization and human cell biology.
Phylogeographic Genetic Diversity in the White Sucker Hepatitis B Virus across the Great Lakes Region and Alberta, Canada
Authors: Adams Cynthia R. , Blazer Vicki S. , Sherry Jim , Cornman Robert Scott , Iwanowicz Luke R.
Published: February 2021

Hepatitis B viruses belong to a family of circular, double-stranded DNA viruses that infect a range of organisms, with host responses that vary from mild infection to chronic infection and cancer. The white sucker hepatitis B virus (WSHBV) was first described in the white sucker (Catostomus commersonii), a freshwater teleost, and belongs to the genus Parahepadnavirus. At present, the host range of WSHBV and its impact on fish health are unknown, and neither genetic diversity nor association with fish health have been studied in any parahepadnavirus. Given the relevance of genomic diversity to disease outcome for the orthohepadnaviruses, we sought to characterize genomic variation in WSHBV and determine how it is structured among watersheds. We identified WSHBV-positive white sucker inhabiting tributaries of Lake Michigan, Lake Superior, Lake Erie (USA), and Lake Athabasca (Canada). Copy number in plasma and in liver tissue was estimated via qPCR. Templates from 27 virus-positive fish were amplified and sequenced using a primer-specific, circular long-range amplification method coupled with amplicon sequencing on the Illumina MiSeq. Phylogenetic analysis of the WSHBV genome identified phylogeographical clustering reminiscent of that observed with human hepatitis B virus genotypes. Notably, most non-synonymous substitutions were found to cluster in the pre-S/spacer overlap region, which is relevant for both viral entry and replication. The observed predominance of p1/s3 mutations in this region is indicative of adaptive change in the polymerase open reading frame (ORF), while, at the same time, the surface ORF is under purifying selection. Although the levels of variation we observed do not meet the criteria used to define sub/genotypes of human and avian hepadnaviruses, we identified geographically associated genome variation in the pre-S and spacer domain sufficient to define five WSHBV haplotypes. This study of WSHBV genetic diversity should facilitate the development of molecular markers for future identification of genotypes and provide evidence in future investigations of possible differential disease outcomes.
Transcriptomic Responses of the Honey Bee Brain to Infection with Deformed Wing Virus
Authors: Pizzorno Marie C. , Field Kenneth , Kobokovich Amanda L. , Martin Phillip L. , Gupta Riju A. , Mammone Renata , Rovnyak David , Capaldi Elizabeth A.
Published: February 2021

Managed colonies of European honey bees (Apis mellifera) are under threat from Varroa destructor mite infestation and infection with viruses vectored by mites. In particular, deformed wing virus (DWV) is a common viral pathogen infecting honey bees worldwide that has been shown to induce behavioral changes including precocious foraging and reduced associative learning. We investigated how DWV infection of bees affects the transcriptomic response of the brain. The transcriptomes of individual brains were analyzed using RNA-Seq after experimental infection of newly emerged adult bees with DWV. Two analytical methods were used to identify differentially expressed genes from the ~15,000 genes in the Apis mellifera genome. The 269 genes that had increased expression in DWV infected brains included genes involved in innate immunity such as antimicrobial peptides (AMPs), Ago2, and Dicer. Single bee brain NMR metabolomics methodology was developed for this work and indicates that proline is strongly elevated in DWV infected brains, consistent with the increased presence of the AMPs abaecin and apidaecin. The 1361 genes with reduced expression levels includes genes involved in cellular communication including G-protein coupled, tyrosine kinase, and ion-channel regulated signaling pathways. The number and function of the downregulated genes suggest that DWV has a major impact on neuron signaling that could explain DWV related behavioral changes.
Benthic Resource Baseline Mapping of Cakaunisasi and Yarawa Reef Ecosystem in the Ba Region of Fiji
Authors: Singh Ashneel Ajay , Maharaj Anish , Singh Priyatma
Published: February 2021

Coastal habitats form a critical source of livelihood for a large number of inhabitants in Fiji. The absence of historical and baseline information creates a significant challenge in effectively designing suitable management plans. This study aimed at developing reliable benthic cover maps of village intertidal resource harvest areas (Cakaunisasi and Yarawa reefs) and anthropogenic perceptions of Votua Village in the Ba region of Fiji for better resource management planning and monitoring. Images captured by the WorldView2 satellite were used as a base for mapping out the resources. Data logging on-site, Global Positioning System (GPS) recordings, local interviews and high-resolution video capturing were utilised for ground-truthing techniques. Six classes of benthic cover were identified, which included algae, coral, sand and gravel, buried reef, coral rubble and seagrass. Accuracy assessment and supervised classification were done using ground reference points. There was an existing marine protected area (MPA) on the Yarawa reef, which did not seem to be working as well as anticipated by observing the habitat maps of the two reefs. Baseline maps constructed here and possibly ecosystem maps can allow for monitoring of the existing MPA as well as the formation of a new and more informed MPA. The maps generated in this study serve as baseline information about resource distribution on Cakaunisasi and Yarawa reefs to inform management decisions.
An Overview of Studies on Meiofaunal Traits of the Littoral Zone of Lakes
Authors: Cifoni Marco , Boggero Angela , Galassi Diana , Di Lorenzo Tiziana
Published: February 2021

We carried out an overview of the studies on the traits of the meiofauna of the littoral zone of lakes to investigate the question relating to the Raunkiaeran shortfall (lack of knowledge on biological traits). For this purpose, we selected a series of keywords associated with response and effect traits (feeding habits, locomotion and substrate relation, body size, shape and mass, life history, reproductive strategy, respiration and thermal tolerance) and we counted the relative frequency of occurrence in a set of scientific papers retrieved from Web of Science. The results showed that, except for the traits related to diet and feeding habits, the Raunkiaeran shortfall is very pronounced for all meiofaunal taxa of the littoral zone of lakes, especially for those related to soft-bodied organisms. The reason behind this deficiency concerns many aspects ranging from the high taxonomic expertise required to the intrinsic difficulties of observing organisms of such a small size. The relationship with temperature has not been sufficiently explored and formalized in any of the examined traits; this research aspect needs to be rapidly addressed since the prospects of climate change impacts on lake littorals are expected to be particularly severe.
An Overview of Flood Risk Analysis Methods
Authors: Diaconu Daniel , Costache Romulus , Popa Mihnea
Published: February 2021

Scientific papers present a wide range of methods of flood analysis and forecasting. Floods are a phenomenon with significant socio-economic implications, for which many researchers try to identify the most appropriate methodologies to analyze their temporal and spatial development. This research aims to create an overview of flood analysis and forecasting methods. The study is based on the need to select and group papers into well-defined methodological categories. The article provides an overview of recent developments in the analysis of flood methodologies and shows current research directions based on this overview. The study was performed taking into account the information included in the Web of Science Core Collection, which brought together 1326 articles. The research concludes with a discussion on the relevance, ease of application, and usefulness of the methodologies.
Simple Fully Automatic Testing Method of Seepage Indices for Low-Permeability Materials
Authors: Shen Xizhong , Li Ling , Wang Yingjun
Published: February 2021

In anti-seepage engineering, quality control and engineering applications are based on the accurate measurement of seepage indices for low-permeability materials. The test used to determine the seepage indices for low-permeability materials adopts an external source to produce water pressure, and the seepage flux produced during the process requires manual measurement; thus, the apparatus used is complex and difficult to operate, thereby lowering the testing efficiency and restricting its application. In this study, a built-in servo motor was used to produce high water pressure with a pressure transmitter, and it controlled and measured the seepage pressure. According to the rotation number of the electric cylinder motor, the volume change of water in the hydraulic cylinder was calculated and, thus, the seepage flux was deduced. A simple fully automatic seepage apparatus for low-permeability materials was designed with a human–computer interface. The results showed the successful calculation of seepage flux as a function of the rotation number of the servo motor through automatic measurement. Furthermore, the replacement of the external high-pressure source with the built-in servo motor enhanced the safety performance, and the human–computer interface enabled an interactive operation and simplified the measurement structure. This simple testing method can provide technical support for quality inspection and construction control of anti-seepage engineering.
Ecotrophic Effects of Fishing across the Mediterranean Sea
Authors: Dimarchopoulou Donna , Keramidas Ioannis , Sylaios Georgios , Tsikliras Athanassios C.
Published: February 2021

The status of the Mediterranean Sea fisheries was evaluated across the seven subdivisions of the General Fisheries Commission for the Mediterranean (GFCM), using ecotrophic and catch-based indicators for the period 1970–2017. All indicators confirmed that the fishery resources across the Mediterranean Sea are no longer sustainably exploited and that the structure and function of marine ecosystems has been altered as a result of overexploitation. Although declining catches were a common feature across the Mediterranean Sea, the pattern of exploitation and the state of stocks differed among the subdivisions, with the Levantine Sea and Sardinia having a better status. Although they only include the exploited biological resources of marine ecosystems, catch and ecotrophic indicators can provide insight on ecosystem status and fishing pressure. In the case of southern Mediterranean countries, catch and trophic levels are the only information available, which is extremely valuable in data-poor ecosystems.
ANALYSIS OF METHODS FOR INCREASE OF EFFICIENCY OF SHIP DIESELS OPERATION WITH RESTORED PISTONS HEADS
Authors: ABLAEV A.R.
Published: February 2021

Recommendations on maintenance for increase of efficiency of ship diesels operation with restored pistons heads, necessity of perfecting of the ways and the criteria of repair of heads of pistons of slow-speed engines for receipt of the details with running abilities, maximally effective in modern conditions of functioning are considered in this article.
ROWING COMPLEX SHIPS. DESCRIPTIONS OF OPTIMAL ROWING ENGINE
Authors: MOREVA I.N. , KHROMOV E.V.
Published: February 2021

Methodology of calculation is considered in the first approaching of rowing complex of ship, the estimation of descriptions of optimal rowing engine is presented.
SUBSTANTIATION OF TECHNOLOGICAL MODES OF PROCESSING CRYSTALLIZING METAL BY PRESSURE USING THE PROCAST SOFTWARE PRODUCT
Authors: DENISOV M.S. , KOTOV G.A. , PETUKHOVA S.M.
Published: February 2021

The possibility of modeling the casting process with crystallization under pressure in the ProCast software package is considered. Simulation results are compared with experimental values. The study of the process is carried out on a horizontal hydraulic press, using technological equipment for the production of cylindrical blanks Ø90× 70 mm. The stages of modeling include a sequence of actions: preparing the geometry of the 3D model of the foundry block; drawing a surface grid using the functions sewn into the program; determination of thermophysical properties and setting boundary conditions. Using solvers, the filling of the mold and the temperature distribution in the mold, taking into account the pouring time, were simulated. In the work, the distribution of macroporosity inside the casting was calculated. Comparing the simulation results and the data obtained experimentally, it is concluded that the ProCast software product is adequate and can be used to solve scientific and applied problems
ASSESSMENT OF FACTORS THAT SHAPE ENVIRONMENTAL HEALTH THE CONDITION OF TERRITORIES OF SETTLEMENTS FOR HEAT SUPPLY
Authors: BURKOVA E.V. , BURKOV D.V.
Published: February 2021

Factors that influence the ecological state of localities ' territories in the organization of their heat supply are studied. A comparison of the impact on the environment of traditional methods of organizing heat supply and solar energy conversion systems with heat accumulation in accumulators is made.
CONTROL OF SECOND ORDER SURFACE PRODUCING WHILE FINISHING
Authors: NEMENKO A.V. , NIKITIN M.M.
Published: February 2021

We consider the task of controlling the technological process, which leads to obtaining on the product a given central surface of rotation of the second order. The initial surface, which during processing is transformed into a surface of a given type, can also be a central surface of rotation of the second order, in particular a spherical plane, or an arbitrary surface of a certain class. The synthesis of a tool for obtaining a given surface by processing in fixed axes and the formation of a continuous control action when working with this tool are considered.
METHOD FOR ANALYSIS OF THE DOPPLER-BROADENED SPECTRA OF LASER RADIATION FOR THE ASSESSMENT OF BLOOD MICROCIRCULATION DISTURBANCES IN DIABETES MELLITUS TYPE 2
Authors: KOZLOV I.O.
Published: February 2021

The article is devoted to the development of laser Doppler flowmetry and analysis of the recorded signal to study the distribution of perfusion over the frequencies of Doppler broadening of laser radiation. The processing algorithm and the necessary technical conditions for the correct registration of the signal are shown. As examples of the proposed method implementation, the data are obtained from a healthy volunteer and a patient with diabetes mellitus type 2 and analyzed. According to the proposed method, processing of recorded data provides a new feature space for data analysis of laser Doppler flowmetry signal.
THE METHOD FOR EVALUATING ADAPTIVE CHANGES IN HUMAN MICROCIRCULATORY-TISSUE SYSTEMS
Authors: DUNAEV A.V.
Published: February 2021

The work is aimed at developing a new approach to assessing adaptive changes in microcirculatory tissue systems when various loads are exerted on the body (sports or physiological stresses), based on the analysis of oscillations in microcirculatory blood flow and tissue oxygen saturation, measured by laser Doppler flowmetry (LDF) and tissue reflectance oximetry (TRO). The study involved eight healthy volunteers aged 21–49 years. Measurements were taken on the palmar surface of the middle finger of the right hand and the medial surface of the lower part of the forearm. The rhythmic oscillations of LDF and TRO were studied using wavelet analysis. Data analysis revealed resonant and synchronized oscillations in the LDF and TRO signals in the myogenic range as an adaptive change as a result of a reaction to physical activity and psychoemotional stress.
WAYS OF REDUCING INTAKE WATER RECEPTION BY THE COOLING SYSTEM OF A SHIP POWER PLANT
Authors: FEDOROVSKAYA N.K. , FEDOROVSKIY K.Yu.
Published: February 2021

The issues of the possibility of reducing the intake of seawater by the power plant cooling system are considered. This will ensure a reduction in the negative anthropogenic impact of the system. Throttle control, thermal control with bypass and variable pump speed are analyzing. It has been founding that the latter method is the most optimal.
INFLUENCE OF PRELIMINARY ULTRASONIC PROCESSING OF VT6 TITANIUM ALLOY ON THE STRUCTURE OF A SURFACE LAYER AFTER IMPLANTATION
Authors: OVCHINNIKOV V.V. , UCHEVATKINA N.V. , SLEZKO M.YU. , LUKYANENKO E.V. , YAKUTINA S.V. , KURBATOVA I.A.
Published: February 2021

The article presents a study on the implantation of silver titanium alloy VT6. It has been shown that ion implantation contributes to the creation of compressive stresses in the surface layer of the target, which makes it possible to increase the endurance indices of the processed alloy under alternating loads. Ultrasonic processing leads to the formation of a nanostructured layer on the surface of a VT6 alloy target. As a result of ultrasonic impact treatment, the structure of the surface layer undergoes significant changes.
DETERMINING TORQUE WHEN DRILLING CARBON FIBER
Authors: DUDAREV A.S.
Published: February 2021

The article considers the issue of the definition of torque, which occurs when drilling polymer composite materials - carbon fiber. The amount of torque during drilling is important, as this size counts on the strength of the part of the drilling machine mechanism, pick up the power of the drive, calculate the strength of the cutting tool. The torque values can be obtained by different approaches, for example, during a natural experiment. But a natural experiment requires expensive force measuring equipment in the form of a dynamometric platform. To determine the torque, it is proposed to use a power measurement in a stable drilling mode, then the amount of active power to translate into torque. The degree of proximity of the results of the measurements of the measured parameter is close to the results obtained by empirical expressions. However, due to the differences in methods, it is not correct to consider the c onvergence of torque results.
THE STUDY OF THE COMBINED EXTRUSION OF GLASSES WITH A CONICAL BOTTOM PART
Authors: LEBEDEVA D.A.
Published: February 2021

The article substantiates the relevance of the research, various possible options for the process of combined extrusion of glasses with a conical bottom are considered. The results of experimental studies.
HOLLOW CYLINDER BILLET WITH AN INTERNAL PROTRUSION RADIAL PRESSING
Authors: RESCHIKOV E.O.
Published: February 2021

Hollow tubular products with an internal protrusion have certain difficulties in production. Machinig such blanks leads to increased material consumption, a decrease of parts operational properties. The alternative technology of internal radical extrusion is proposed. Using the theory of plastic flow according to the method of A. L. Vorontsov, the formulas necessary for calculating the technological parameters of the process are obtained. Reliable verification of the theoretical study results is possible by experiment performing. In the present work samples made of lead were extruded. The deforming force was determined and the results were compared to the values obtained theoretically. The effect of friction to the force value was evaluated. The high accuracy of the calculations has been experimentally confirmed.
STRUCTURE OF A THREAD PROCESSING MODULE WITH PARALLEL KINEMATICS MECHANISMS
Authors: KHARCHENKO A.O. , CHASOVITINA A.S.
Published: February 2021

In the article the principles of construction of modern thread-cutting equipment based on mechanisms of parallel structures are considered. The optimal structure was identified and combined with a variant of the combination of MPS with the ability to simultaneously change the length of the rods and the coordinates of reference hinge, ensuring the implementation of a significant number of technological methods in the same workplace for one installation details. The principle of operation of the resulting hybrid thread-cutting machine with a combined MPS of a modular construction in which the executive body can perform a complex spatial movement is described. Based on morphological analysis and structural-layout synthesis, followed by optimization according to the criterion of reliability and economic efficiency, the hybrid layout of a six-spindle thread-cutting machine with MPS. The design of a precast plastically deforming tap of increased resistance is presented due to the possibility of multiple regrindings by shortening the worn-out section of the working part; providing high accuracy and quality of the obtained threads.
The monetary impact of zoonotic diseases on society: The Turkish Case
Authors: ARI Hakan Oğuz , İŞLEK Elif , BİLİR USLU M. Kardelen , ÖZATKAN Yonca , KARAKAŞ Fatih , YILDIRIM Hasan Hüseyin , ALP Emine
Published: February 2021

In this study, the burden of disease, costs, and animal losses caused by the seven most common zoonoses in humans and the two most common zoonoses in animals are calculated between 2016-2018 in Turkey. It aims to contribute to the literature by providing a holistic framework on the costs and burden of diseases of zoonoses in Turkey. The methodology of the study was based on the formula of ''Disease Burden of Zoonotic Diseases'' developed by the FAO. It was calculated under ''Burden of Early Mortality in Humans'', ''Burden of Morbidity in Humans'', "Financial Value of Lost Animals" and "Reduction in Production Capacity of Infected Animals". All cases which were registered in 2016, 2017 and, 2018 from the Ministry of Health (MoH) and the Ministry of Agriculture and Forestry (MoAF) concerning the relevant diseases were included in the study. It is found that the DALYs of all related zoonotic diseases increased and the costs for diagnosis, treatment, and prevention also rose between 2016-2018. The share of total social cost in the GDP of Turkey was estimated to be 0.0090% in 2016, 0.0097% in 2017, and 0.0113% in 2018. It is argued that the seven zoonoses in the scope of this study have an increasing burden graph on Turkish society between 2016-2018. Moving from the fact that most infectious diseases that threaten human and community health are of zoonotic origin and difficulties in predicting when, where or how a zoonotic disease will occur, all sectors should continue to carefully monitor events related to zoonoses and carry out joint studies.
Aprendizaje por descubrimiento aplicado a la multiplicación de números naturales
Authors: Barrios Villarreal Brenda Maritza , Camacho Hernández Efraín Eduardo
Published: February 2021

La investigación tuvo por objetivo general analizar el aprendizaje por descubrimiento aplicado a la multiplicación de números naturales en los estudiantes del quinto grado de la Unidad Educativa Estadal Aragüita. Como fundamentos se consideraron las teorías del aprendizaje significativo de Ausubel, motivación de Maslow y aprendizaje cooperativo de Vygotsky. Se adscribe a una investigación de campo no experimental cuya muestra fue de carácter no probabilística constituida por 26 estudiantes del quinto grado a quienes se les aplicó una Lista de Cotejo conformada por 17 ítems, para determinar el grado o nivel de aprendizaje en la multiplicación de números naturales. La validez del instrumento se realizó a través del juicio de expertos y la confiabilidad se realizó mediante el coeficiente Kuder-Richardson, la cual fue de 0,85 resultando altamente confiable. Para el cierre de esta investigación, se dilucidó la ausencia de aplicación de teorías que sustentaran el aprendizaje significativo de los estudiantes.
Gender Discourse in Modern University Educational Space
Authors: Sytnykova Yuliia
Published: February 2021

Gender transformations of global social relations cause changes in various spheres of human life, in particular, the revision of traditional issues of higher education changing the modern educational space, based on the principles of humanism and equality.Therefore, the gender discourse in the university communicative space is the research purpose, it attracts the attention of scientists and it is a topical issue today.The analysis, synthesis, comparison and generalization methods as methodology are used in the paper.This study as a result dedicates to the theoretical issues of creating productive conditions for the formation of gender-loyal young people attitude to members of different sexes and get rid of their own gender stereotypes. It is argued that, future professionals will be able to learn to value their gender identity and feel free, choosing a life and career path due to the well-organized communication and awareness of student youth about their gender consciousness. Indeed, the formation of a gender-conscious personality directly depends on the rules and traditions prevailing at the university, which can be both restraining and favorable for the education of a gender-loyal person. A corporate work, a situational modeling, a processing of discussion some questions are defined as methods of this activity. The complex of these acts is an effective toolkit to solve the gender discourse issues, and the professional scientific approach of enthusiastic teachers is a driving force that helps to intensify the desired result achievement.The conclusion: we do not have to deal with gender stereotypes, we have to help youth become they want to be. Students should not pay attention to how someone identifies someone, there is no difference in abilities between the sexes, in the desire to change and create the world as they want to see it.
Sebaran Konsentrasi Coliform Dan Escherichia Coli Pada Air Tanah Dangkal Kota Gorontalo
Authors: Mahmud Marike
Published: February 2021

This study aims to analyze the spatial distribution of coliform and E. coli in groundwater Gorontalo City and the factors that influence it. The sampling locations were taken from 9 sub-districts consisting of 27 villages. The nine sub-districts consist of Dumbo Raya, Hulondalangi Kota Barat, Kota Utara, Kota Timur, Kota Selatan, Sipatana, Dungingi, and Padebuolo Districts. Sampling in each village consisted of 1 sample and was taken randomly. Kota Utara Sub-district consisted of 1 sample location, namely Dembe Jaya Village. Kota Timur Sub-district consists of 2 villages, namely Padebuolo and Heledulaan Selatan villages. Kota Selatan sub-district consists of Limba U 1. Kota Tengah sub-district consists of Liluwo Village. The Sipatana sub-district consists of Tanggikiki, Bulotadaa, and Tapa Villages. Dungingi sub-district consists of Tulandenggi and Libuo Villages. The total number of samples was 27. The analysis was carried out at the Gorontalo District Health Office, UPTD of Water Quality Laboratory Installation. The sampling method was carried out aseptically. Measurements in the laboratory used the MPN method. The quality standard that became the reference was Permenkes (Health Minister Regulation) number 32 of 2017 Annex 1 regarding water for sanitation and hygiene. The results of the analysis showed that the distribution of the number of coliform bacteria, in general, was at the quality standard set. A total of 24 villages of 27 locations were above the established quality standard. Regarding the number of E. coli bacteria from 27 locations, there were 5 locations above the established quality standards. The factor that affected the pollution was the distance of the septic tank which was very close to the well (water source).
Fabrication and room temperature characterization of trilayer junctions for the development of superconducting qubits on 300 mm wafers
Authors: Wan Danny , Couet Sebastian , Piao Xiaoyu , Souriau Laurent , Canvel Yann , Tsvetanova Diana , Vangoidsenhoven Diziana , Thiam Arame , Pacco Antoine , Potočnik Anton , Mongillo Massimo , Ivanov Tsvetan , Jussot Julien , Verjauw Jeroen , Acharya Rohith , Lazzarino Frederic , Govoreanu Bogdan , Radu Iuliana P.
Published: February 2021

We present the development of Nb/Al–AlO
x
/Nb trilayer stacks and the implementation of a full 300 mm process flow for the fabrication of trilayer-based superconducting qubits. Room temperature electrical characterization of tens of thousands of Josephson junctions showed good agreement between blanket resistance-area (RA) product and RA product of processed wafers. Cross-bridge Kelvin resistor structures with dimensions ranging from 200 nm to 1.2 μm were tested and exhibited excellent yield and exceptionally low resistance variability down to <1%. This result is expected to translate to reduced qubit device variability and improved predictability of qubit transition frequencies at cryogenic temperatures.
Performance characteristics of strained Ge p-FinFETs under the integration of lattice and self-heating stress enabled by process-oriented finite element simulation
Authors: Lee Chang-Chun , Hsieh Chia-Ping , Huang Pei-Chen , Liao Ming-Han
Published: February 2021

Stress-induced mechanism and related manifold characteristics from lattice mismatch and harsh self-heating effect (SHE) substantially interact are major concerns of advanced strained Ge p-FinFETs with inherent poor thermal conductivity. This study presents a process-oriented simulation methodology to investigate the comprehensive influences composed of the stress amplitude and performance variations induced by SHE and lattice stresses. Device performance can be separately improving by 15.98% and 31.20% when lattice strain and subsequent SHE are introduced. In conclusion, the effect of SHE on the performance of advanced p-FinFET is explored and found tantamount to the stress contribution of the lattice mismatch.
Polishing can reduce discoloration of the nanofiller composite resin filling due to the use of chlorhexidine
Authors: Armiati I Gusti Ketut
Published: February 2021

Nanofiller composite resin (NCR) restoration has a major problem, namely color changes. Polishing are factors that determi-ne color change and if accompanied by the use of mouthwash for a long time can cause more significant color changes. The 0.2% chlorhexidine gluconate mouthwash is a mouthwash that is often used in the community because it has low toxicity. However, using the chlorhexidine gluconate 0.2% mouthwash in the long term can cause more significant discoloration. This study is aimed to determine the difference between discoloration of polished and unpolished NCR on the soaking of 0.2% chlorhexidine gluconate mouthwash. This purely experimental research with a pretest and posttest with control group design, using 24 samples of premolar teeth prepared with class II cavity design and then filled with NCR. The samples were then di-vided into 4 treatment groups, namely polished and non-polished NCR, 0.2% chlorhexidine gluconate mouthwash and aqua-dest. Soaking was carried out 24 hours a day for 5 days in an incubator at 37ºC. Color changes of each group were measured using shade guide Vita Classical. The results were analyzed descriptively and the normality was tested by the Shapiro-Wilk and Levene's homogenity test with significance value of 0.05. Mann-Whitney for the different test. Based on the results of this study, it is concluded that the discoloration of the polished NCR was smaller than that was not polished on the soaking of chlorhexidine mouthwash 0.2%
O Uso de Prótese Peniana Maleável no Tratamento da Disfunção Erétil
Authors: Rodrigues Júnior Oswaldo Martins
Published: February 2021

KRAUSS, D. J.; LANTIGA, L. J.; CAREY, M. P.; MEISLER, A. W.; KELLY, C. M. O uso de prótese peniana maleável no tratamento da disfunção erétil: um estudo prospectivo do ajustamento pós-operatório. The Journal of Urology 142: 988-91, 1989.
Contribuição ao Estudo Psicossocial da Adolescência
Authors: Lazzaretti Claire Terzinha , Andrade Rosires Pereira de , Regiani Claudete
Published: February 2021

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A SSES-E
Authors: Rodrigues Júnior Oswaldo Martins
Published: February 2021

LIBMAN, E.; ROTHENBERG, I.; FICHTEN, C. S.; ANSEL, R. A SSES-E: A Medida da Auto-Eficácia Sexual na Função Erétil. Journal of Sex Marital Therapy 11(4): 234-47, 1985.
O exercício da sexualidade em fins do século XX
Authors: Vitiellol Nelson
Published: February 2021

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Urgensi Ilmu Mukhtalif Al-Hadits dalam Ijtihad: Telaah atas Hukum Menjama’ dan Mengqadha Shalat
Authors: Rubiyanah  , Jalil Abdul
Published: February 2021

[URGENCY OF THE SCIENCE OF MUKHTALIF AL-HADITH IN IJTIHAD: STUDY THE LAW OF JAMA' AND QADHA PRAYER]. This study examines the hadith which explains about praying without hindrance and reciting it for the dead. This research aims to find out how the law and how to perform 'prayers without hindrance and compare it for the deceased based on the evidence of hadiths, as well as the analysis of fiqh scholars. The method used is tahlili and muqarin, which is to analyze the hadiths that contradict the explicit meaning, then compared between the hadiths with reference to the science of mukhtalif al-hadith. Figures using the tahili method include: Ibn Hajar al-'Atsqalaniy, Al-'Abbas Syihab al-Din Ahmad bin Muhammad al-Qastalani, Syams al-Din Muhammad bin Yusuf bin 'Ali al-Kirmani, Muhammad bin' Abd al-Baqi 'bin Yusuf al-Zarqani. Those who use the method of muqarin are Imam Nawawi and Badr al-Din Abu Muhammad Mahmud bin Ahmad. Differences of opinion among the scholars of fiqh (khilafiyah), because there is no explanation in qath'i both in the Qur'an and Sunnah. From here comes the ijtihad of scholars whose truth is relative (zhanniy). In the matter of the law of praying 'prayers without hindrance, and its qadha for the dead are found hadiths whose explicit meaning contradict each other. The science of mukhtalif al-hadith is a solution in ijtihad to compromise and get legal conclusions. The output of this study makes a positive contribution for Muslims to obtain legal clarity as a practical reference in practice.
A CONTROLLED CLINICAL STUDY TO EVALUATE A PROPRIETARY NON-INVASIVE
SMARTPHONE BASED DIGITAL BIOMARKER TOOL LYFAS® IN ENABLING EARLY
DETECTION OF COVID-19 INFECTION AMONG ASYMPTOMATIC INDIVIDUALS
Authors: Das Rupam , Kataria Shushila , Sharma Pooja , Janakiraman Kannan , Shrivastava Madhur , Mahadevappa Geetha H
Published: February 2021

Coronavirus disease 2019 (COVID-19), is a pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). With the
increasing number of individuals infected with COVID-19, there is a growing need for easy, dependable, accurate, scalable, and cost-effective
tools. These tools should serve the purpose of population screening/surveillance, diagnosis, and prognosis. Unlike the other pandemics in the past,
the current viral infection presents itself with long incubation period up to 14days. This situation is challenging because it results in an extremely
high proportion of asymptomatic individuals (up to 80% and more). These individuals in turn contribute to high risk of transmission among the
vulnerable population with coexisting diseases and the aged. Currently, the real time PCR test and serology is being largely employed only in
symptomatic individuals. Therefore, there is a need for a dependable additional test to identify the asymptomatic individuals, to qualify them for
the conrmatory rtPCR and/or serology tests.
To meet these the above requirement, we decided to repurpose and test our proprietary non-invasive smartphone-based health screening mobile
application Lyfas. The validated parameters captured from Lyfas were found to be inherent indicators of several cardiorespiratory, cardiovascular,
autonomic nervous system, hematology and biochemistry anomalies. Apparently, these anomalies were also found and reported as early indicators
of COVID-19 infection. Therefore, by means of rationale selection of these parameters, we derived a unique LYFAS_COVID_SCORE to enable
detection and prioritize conrmatory testing for asymptomatic individuals.
A controlled clinical study was conducted in 25(n=25) subjects to prove the hypothesis and establish the difference in LYFAS_COVID_SCORE
between an infected and non-infected group of individuals. The LYFAS_COVID_SCORE derived out of this clinical study was found to be
different between the two groups. The positive infected test group had a signicantly high(p=.00012) median score of 19.8(range 9.9 to 22.1)
compared to 6.9(range 2.2 to 7.8) that of the healthy uninfected control group. The accuracy, sensitivity and the specicity of the study was found to
be 92%, 93.2% and 90% respectively. The result of this study is therefore an evidence to use Lyfas as a potential tool in the identication, screening,
and surveillance of asymptomatic individuals. The ndings from the study deserves to be extended to a large population conrmatory clinical study
to add proof and value to the tool.
THE COMPARATIVE STUDY OF TRANSIENT ELASTOGRAPHY AND SHEAR WAVE
ELASTOGRAPHY OF LIVER IN PATIENTS OF CHRONIC LIVER DISEASE.
Authors: Poonia Vikas , mendiratta Kuldeep , bagaratta Menu , jaipal Usha
Published: February 2021

we aim to compare transient elastography and shear wave elastography in chronic liver disease patients for liver stiffness. Our objective was to
calculate mean shear wave pressure by transient elastography and shear wave elastography methods and to compare the outcome of these two
methods.A total of 190 Chronic Liver disease patients who clinically recommended transient elastography and shear wave elastography in
Department of Radiodiagnosis SMS Medical College Jaipur.The mean shear wave pressure for transient elastography and ultrasound shear wave
elastography was 10.77±6.88 and 10.88±7.05, respectively.