bluuebunny/crossref_metadata_2025 huggingface dataset:
EVALUATION OF SURFACE QUALITY AND DIMENSIONAL ACCURACY OF ELASTOMERIC IMPRESSION MATERIALS AFTER VARIOUS DISINFECTION PROTOCOLS
Authors: Sana Mohammed , sharma Sumeet , Jyothi Jyothi , Rizwanulla Rizwanulla , Mouli Y.Chandra
Published: August 2021

To evaluate surface quality and dimensional accuracy of elastomeric impression materials after various disinfection protocols. A Total of 150
samples were made i.e..50 from each type of impression material. Specimens were immersed in disinfectant solutions namely 0.2%
chlorhexidine,5.25% hypo,0.2% povidone iodine, running tap water and ozone water for disinfection and examined for surface quality using
stereomicroscope and dimensional accuracy using digital Vernier calipers. Silicones exhibited best dimensional accuracy & surface quality when
treated with ozone water after 24 hours of disinfection whereas polyether exhibited good surface quality & dimensional accuracy when treated with
control (tap water) after 24 hours of disinfection.
A COMPARATIVE STUDY ON THE TOTAL DOSE REQUIREMENTS AND HEMODYNAMIC ALTERATIONS WITH AND WITHOUT THE APPLICATION OF PRIMING PRINCIPLE AMONG PATIENTS INDUCED WITH PROPOFOL
Authors: Nair Radhika , Abraham Saramma , Varghese Reji S.
Published: August 2021

Background:- Propofol given at standard induction dose, is known to produce haemodynamic instability, especially hypotension. Application of
“priming principle” helps to reduce the total dose of propofol.
Objectives:- To study the total dose requirements of propofol and peri-intubation haemodynamic stability in patients undergoing surgery under
GACV when priming principle is applied.
Methodology:- This was an observational study among 54 ASA I and II patients undergoing surgery under GACV, who were randomly divided
into three groups of 18 patients each. All patients received fentanyl 1 mcg/kg over 30 seconds followed by propofol. Group 1 patients received the
total (100%) calculated dose of propofol. Group 2 and 3 patients received 20% and 40% of the dose respectively as priming dose, and the remaining
was given 30 seconds later, until there was loss of eyelash reex. The total dose of propofol given, the heart rate, systolic and diastolic blood
pressures, mean arterial pressures at various time intervals before, during and after induction and intubation, and complications observed were
compared and statistically analysed using SPSS 2.0.
Results:- The mean induction dose of propofol was signicantly lower in the priming groups (71.7 ± 17.2mg in group 2 and 80.0 ± 17.1mg in group
3) compared to group1 (107.9 ± 8.0mg). The fall in mean arterial pressure was signicantly lower in groups 2 and 3 (p<0.05) compared to group1 at
one minute post-induction.
Conclusion:-Application of priming principle reduces the induction dose of propofol and is associated with better peri-intubation haemodynamic
stability.
SONOGRAPHIC MEASUREMENTS OF SCROTAL WALL THICKNESS
Authors: Gandhi Sahil , Natekar Asit
Published: August 2021

Main function of scrotum is to hold testes at optimal temperature for spermatogenesis. Sperm production in the testes is a temperature sensitive process. It requires an environment that is 2 to 6°C cooler than the body core. The temperature of the testes is regulated by the scrotal wall. Tunica dartos muscle changes the surface area of the scrotal skin by contracting or relaxing depending on the ambient temperature. This study postulates that if the thickness or the tone of this muscle is more thereby contributing to scrotal wall thickening, it will hamper the thermoregulation and spermatogenesis leading to poor sperm production. This could be an besides varicocoele another cause of male infertility which has been an established cause. This study will help to suspect the patients of infertility caused by thick scrotal wall. This study is aimed to study scrotal wall thickness and with the help of Ultrasonography. to establish norms The study was conducted at department of Radio-diagnosis at the tertiary care hospital, Sangli. The study started after approval of institutional ethical committee. This is a cross sectional observational study for the duration of 4 months. Total number of 50 cases was achieved in this time duration which satised the inclusion criteria. Statistical method used was Student's T test. Scrotal ultrasonography was performed using linear and curvilinear probe with sta (5-12 MHz) (2-5 MHz) on Philips Afniti50, after ndoff pad allowing some time for the dartos muscle to relax and scrotal wall thickness is measured on either side on three surfaces (anterior, posterior and lateral) and means were obtained. This study found that there was no difference between anterior, posterior, lateral wall thicknesses on ipsilateral side or contralateral side. There is no need to take three different wall thicknesses and convenience and suitability of any scrotal wall thickness would be equally effective.
PREDICTIVE ROLE OF NLR, d-NLR, LMR AND PLR IN DISEASE SEVERITY OF COVID-19 PATIENTS
Authors: Pujari Y Kashinatha , M C Varun Kumar , Meena Shyam Bihari , K R Poornima
Published: August 2021

Introduction: On 31st March 2020 WHO declared coronavirus disease 2019 as global pandemic caused by SARS-COV-2019. Covid-19 virus elicits severe inammatory reaction upon entering the body. This inammation is also reected in blood parameters like complete blood count, liver function test, renal function tests etc. By studying some of these parameters, we have tried to determine the severity of covid-19 infection. Aims And Objectives: To review the blood parameters that are affected by virus triggered inammation in covid-19 disease. Materials And Methods: An observational cross-sectional study was conducted in a tertiary COVID-19 care hospital over a course of 4 months. Infection was diagnosed by RT-PCR method done on either nasopharyngeal or oropharyngeal swab. Patients were grouped into severe and nonsevere category according to the interim guidelines for diagnosis and treatment issued by WHO. There were 50 severe and 100 non severe cases in total. T-test was applied for comparing continuous variables and ROC curve was applied to determine the cut off values of various parameters studied. P value <0.05 was recognized as statistically signicant. Results: The difference between mean value of NLR in severe group (11.72+8.57) and in non-severe group (2.57+1.53) was signicant with the p value of <0.0001. The ROC curve shows AUC of 0.8835 and cut-off value of >3.5 with 80% sensitivity and 82% specicity. Similar results were found with d-NLR (7.59+5.71 vs 1.95+1.06) with p value <0.0001 with ROC-AUC of 0.8808 and cut-off of >2.65 with 80% sensitivity and 80% specicity. The ndings of LMR were also signicant with mean value of 4.22+3.75 in severe, 6.80+3.19 in non-severe, p value of <0.0001, ROCAUC of 0.7663, cut-off of <4.65 (72% sensitivity and 75% specicity). The ndings of PLR had mean value of 263.33+179.47 in severe, 128.46+73.70 in non-severe, p value of <0.0001, ROC-AUC is 0.7237, cut off of >47.50 (72% sensitivity and 72% specicity. Conclusion: The values of NLR, d-NLR, LMR, and PLR varied signicantly among severe and non-severe cases. Thus, they have a good predictive role in disease severity in covid-19 infection. These variables are easy to assess and may help in triage and better management.
LLIO: Lightweight Learned Inertial Odometer
Authors: Wang Yan , Kuang Jian , niu xiaoji
Published: August 2021

The 3D position estimation of pedestrians is a vital module to build the connections between persons and things.

The traditional gait model-based methods cannot fulfill the various motion patterns.

And the various data-driven-based inertial odometry solutions focus on the 2D trajectory estimation on the ground plane, which is not suitable for AR applications.

TLIO (Tight Learned Inertial Odometry) proposed an inertial-based 3D motion estimator that achieves very low position drift by using the raw IMU measurements and the displacement predict coming from a neural network to provide low drift pedestrian dead reckoning.

However, TLIO is unsuitable for mobile devices because it is computationally expensive.

In this paper, a lightweight learned inertial odometry network (LLIO-Net) is designed for mobile devices.

By replacing the network in TLIO with the LLIO-Net, the proposed system shows similar accuracy but significantly improved efficiency.

Specifically, the proposed LLIO algorithm was implemented on mobile devices and compared the efficiency with TLIO.

The inference efficiency of the proposed system is 2-12 times that of TLIO.
Propagation measurements and analysis on MF and HF bands in urban areas in The Netherlands
Authors: Fockens Koos T.W.H. , Vogt-Ardatjew Robert , Leferink Frank
Published: August 2021

Using a new propagation measurement set-up, which produces a high number of data, enabling a proper statistical analysis, and resulting in very concise results, propagation measurements were performed and analized at 16 residential locations in The Netherlands in the frequency range from 1.8 to 28 MHz. In the whole frequency range the propagation loss appear to be higher than according the International Telecommunication Union ground-wave propagation model might be expected. Also typical characteristics of that model are not present, but instead the propagation shows a constant roll-off in dBs per decade, which slope is increasing with frequency. A regression curve could be established, and constants filled in. This statistical information may be used for building an accumulation model to lay a causality between source powers, source densities, and local Man-Made Noise levels.
Because of Bostock
Authors: Wyman Noelle
Published: August 2021

On a below-freezing January morning, Jennifer Chavez, an automobile technician, sat in a car that she was repairing to keep warm while waiting for delayed auto parts to arrive. Without intending to, she nodded off. Her employer promptly fired her for sleeping on the job. At least, that is the justification her employer gave. But Chavez had reason to believe that her coming out as transgender motivated the termination. In the months leading up to the January incident, Chavez’s supervisor had told her to “tone things down” when she talked about her gender transition. The repair-shop owner said that the transition made him “nervous” and could “impact his business,” claiming that it had prompted a prospective employee to decline a job offer. The owner had also instructed Chavez not to wear “a dress or miniskirt” or “too feminine attire” to and from work.

Before coming out as transgender, Chavez was an “excellent employee” with a spotless disciplinary history. After coming out, things changed. The repair-shop management acted on advice from an attorney to begin writing up Chavez for issues “one at a time” with a “focus on work and performance.” The accidental nap may have been exactly the opportunity they needed.
Study of tube billet reduction to obtain constant wall thickness
Authors: Kaybarov A.P. , Evsyukov S.A.
Published: August 2021

Analysis of material thickening process during reduction operation is presented. In order to obtain constant thickness after reduction by conical die thickness distribution of the workpiece is proposed. Workpiece with required thickness distribution is manufactured by thinning drawing. Experimental verification of proposed thickness distribution in order to obtain constant thickness after reduction operation is carried out.
Various types of traction synchronous motors for urban use
Authors:   Klimov A.V. Tishin A.M. CHirkin V.G.
Published: August 2021

Asynchronous and valve-inductor (synchronous-reactive) motors have high efficiency at high rotor speeds, while permanent magnet synchronous motors (SPM and IPM) have high efficiency at low and medium frequencies. The latter are the most optimal for urban conditions, and the former for conditions of operation on highways and highways. Synchronous motors with permanent magnets are more expensive, so a good alternative to them can be synchronous-jet motors with permanent magnets, which determine the optimal balance of active and reactive torque, as well as efficiency.

Keywords:
synchronous motor, asynchronous motor, valve-inductor motor, synchronous-jet motor, permanent magnet, efficiency, operating conditions, reactive torque
The influence of process of manufacturing and heat treatment on performance and dimensional stability of the Cu—Ni—Si alloy
Authors: Golovkin P.A. , Milutinovich M.M.
Published: August 2021

The possibilities of improving the properties and increasing the dimensional stability of material of the special Cu—Ni—Si alloy for the parts of electric vacuum microwave devices by the deformation and heat-treatment methods are analyzed.
Influence of Tension Stiffening and Cracked Shear Modulus Models on Non-Linear Analysis of High Strength Fibrous Reinforced Concrete Slabs
Authors:   College of Engineering, University of Mosul, Iraq, Asaad Yaseen Ahmed , Abdul-Razzak Ayad A. ,   College of Engineering, University of Mosul, Iraq
Published: August 2021

In the present study, new models are proposed for tension stiffening and cracked shear modulus to study their effect on the response of the slab. These models are used in the nonlinear analysis of High Strength Steel Fiber Reinforced Concrete (HSSFRC) slabs. The suggested models have multiple shapes depending on the curvature factor, these models are compared with the well-known formulas used in previous studies and great agreements are achieved. The Serendipity “eight-node” element type has been adopted for representing the concrete and layered approach is used to simulate the concrete elements and a smeared layer approach is used to represent the steel reinforcement. The concrete compression behavior is modeled using strain hardening plasticity method, the first two stress invariants of the yield condition is used. For finite element analysis, a computer program coded in Fortran 90 is developed and used for performing nonlinear analysis on the slabs. In order to check the validity of the current models, many actual results for testing slabs “in the laboratory” are compared with the results from the present study and a great agreement is achieved. All studied slabs were simply supported from four sides and loaded with concentrated load at the middle of the slab, but slab S5 is simply supported by two opposite parallel sides with line load parallel to the supports at the middle of the span of the slab. For the curvature factors (Bt, Bg) it is found that the values (Bt =0.005-0.5, Bg =0.001-0.05) give the best simulation for the slab. The effect of tension stiffening model is more than the effect of cracked shear modulus model and there is an interaction between tension stiffening and cracked shear modulus models.
Factorial Design for Studying the Properties of Recycled Aggregate Concrete Exposed to Aggressive Media
Authors:   General Company for Ports of Iraq, Department of Engineering Affairs, Basrah, Iraq, Ali Abed Ammar , Kamal Ibtisam Mustafa ,   Civil Engineering Department, Faculty of Engineering, Soran University, Kurdistan Region-Iraq
Published: August 2021

Recycled Aggregate Concrete (RAC) mixes (1.15: 2.3: 4.6) cement: fine aggregate (sand): coarse aggregate (demolition concrete waste), water / cement (0.5), and 50 % demolition aggregates were prepared according to standard procedure. The resistance of the recycled aggregate concretes towards chemicals was investigated throughout the attack of (Acid: acetic Acid HAC, and salt: Sodium Chloride NaCl) solutions. The test was carried out based on adopted experiments designed using Response Surface Methodology (RSM). A 2-operating parameter central composite design was adopted to study the impact of concentration of the HAC and NaCl solutions (0.1-0.45) Molar, and immersion period (0.57-6.9) day of the (RACs) specimens on weight loss, compressive strength and density. The results obtained confirmed that weight loss increases, but both compressive strength and density decreases after the aggressive solutions attack, however HAC seemed more aggressive. The decrease in compressive strength was (2.8-42) % and (3.2-10.8) %, while the decrease in density was (0.72-2.05) % and (0.6-1.8) % for the samples immersed in HAC and NaCl solutions respectively. The mathematical models presenting the effect of concentration of the aggressive media and immersion duration on weight loss, compressive strength and density were estimated, and the effects were optimized and modeled. The Analysis of Variance (ANOVA) revealed that an optimum compressive strength (37.8 and 34.8) MPa is obtained for the RACs immersed for 0.56 day at 0.1 Molar HAC and NaCl respectively.
Analytical Study of University Campuses’ Walkability using Space Syntax Analysis: University of Duhok (UoD) as a Case Study
Authors:   College of Engineering, University of Duhok, Iraq, Khorsheed Jowan Bayez , Sulaiman Goriel Wafaa Anwar ,   College of Engineering, University of Duhok, Iraq
Published: August 2021

Human health is an essential issue for many decays; Walking is one of those human activities that showed optimistic results, “A healthy mind is in a healthy body”. University as a small city as such consider healthy and should be environmentally friendly when it been designed responsively for sustainable criteria and human respects. Where Students, staff need for safety and comfortable work environment been satisfied. University of Duhok (UoD) as a campus have a lot of transportation problems, especially at break and peak hours. One of these main problems are car-oriented transport, lack of smart well-planned transport system. Thus, the research will be tackling those issues, by utilization the theory of Space syntax and using an analytical tool, depthmapX, Axial Analysis, to explore the potentials of the network system as an indicator of pedestrian satisfaction of walkability. The investigating of students’ walkability projected through visual observation, streets graphic documentations, a digital simulation of possible pedestrian paths through graphical analysis of site elements and components. This research aimed to educate the community and stockholders on the possibility of promoting walkability.
Absorber Type Optimization for Night-Shift Operation of Solar Air Heater
Authors:   College of Engineering, Salahaddin University-Erbil, Iraq, Rasul Hardi A. M. , Hamakhan Idress A. ,   College of Engineering, Salahaddin University-Erbil, Iraq, Ibrahim Ali M. ,   Ministry of Electricity (KRG), Iraq
Published: August 2021

In the current study, the effect of using heat storage materials aimed at the night shift operation was studied by simulation tools. The Finite Volume Method (FVM) is used as a method to discretize the governing equations in the 2-D domain, and the RNG K- turbulence model is applied for simulation. The effect of absorption type based on five different materials such as Aluminum, Water, Asphalt, Graphite, and Sand on the performance of solar air heaters (SAH) is carried out thermally. The results show that the optimum material to obtain the maximum difference in temperature (38.32 K) between the absorber and the surrounding occurs once the asphalt is used, while the sand is the worst case, which is (31.71 K). Following, the focus is on the best absorber for night time operation. The Lumped Parameter Analysis is applied to the time required to dissipate the heat energy from the storage layer to reduce it to the assumed final temperature of a 5-degree difference (higher) than the ambient. After solving the transient equation, it is found that water can operate the system for a longer period (4.31 hrs.) as well as Graphite can operate the system for a shorter period (0.46 hrs.). Then ten different velocities in the entry section are used to consider the influences on the system performance. The results show that the velocity has a significant effect on the outlet temperature and operation period for night time.
Experimental Investigation on Thermal Properties of Wood-Plastic Composites as Flat Panels
Authors:   College of Engineering, Mustansiriyah University, Iraq., Mussa Hadeel Mahmood , Wasmi M. Salih Tawfeeq ,   College of Engineering, Mustansiriyah University, Iraq.
Published: August 2021

The aim of this research is investigating the thermal properties of wood-plastic composites (WPCs) in the form of flat panels. The study has included many properties such as: thermal conductivity, thermal stability, thermal expansion and melting point. The WPCs have made of high-density polyethylene (HDPE) and polypropylene (PP) incorporated with wood flour taken from pine trees. The studied concentrations of wood flour in the composites are (10, 20 or 30 %). The work was performed experimentally by manufacturing the specimens and measuring the thermal properties. The results show that the addition of 10% wood flour to the composite, leads to a reduction in the thermal conductivity of 4-10%, a reduction in thermal expansion of 8-12%, and an increase in the melting point of (2-3°C) for both HDPE and PP wood composites. It was found that wood could be used with plastics that have low melting points, such as: HDPE, LDPE, PP, PVDF and PA, to ensure high thermal stability.
Short-Term Study on Mechanical and Fresh properties of Micro-silica based Self Consolidating Concrete in Nigeria
Authors: Buari T.A.
Published: August 2021

The ever increasing environmental challenge arising from improper waste management has been a great concern to researchers and the society. One of such industrial waste is micro silica; a bye-product of the Carbothermic reduction of high purity quartz at temperature of about 2000oC in the presence of coke. The finess of this material and its pozollanic nature makes it suitable for use in the production of self-compacting concrete. In this research micro silica was introduced in percentages of, 5, 10 and 15% as partial replacement of cement in the production of self-compacting concrete. The fresh properties were examined using slump flow, T50cm, slump flow, V-funnel and blockage ratio using L-Box. As the Micro silica were introduced, T50cm time increased, Slump flow reduced, V-funnel flow time increased and L-Box value reduced, due to increase in viscosity. Comparing the experimental results with European Federation of National Associations of Representing for Concrete EFNARC 2002, blockage ratio for 15% was below 0.8. The compressive stresses at 28days were higher than the control at 28days compressive stress with 8.6%, 19.04% and 11.9% for 5%, 10% and 15% respectively. Thus, cement can be partially substituted with micro silica up to 15% with improvement in compressive strength in self-compacting concrete.
Humidity, huddling & the hibernation energetics of big brown bats (Eptesicus fuscus)
Authors:   ,   University of Winnipeg Library, Muise Kristina A.
Published: August 2021

During winter, many mammals hibernate and lower their body temperature and metabolic rate (MR) in prolonged periods of torpor. Hibernators will use energetically expensive arousals (i.e., restore body temperature and MR) presumably to re-establish water balance. Some hibernating mammals however will huddle in groups, possibly to decrease energetic costs and total evaporative water loss (EWL), although the benefit is not fully understood. Research on the relationship between behaviour, physiology, water loss, and energy expenditure of bats during hibernation is especially important because of a fungal disease called white-nose syndrome (WNS). To date, 12 North American bat species are affected by WNS, however big brown bats (Eptesicus fuscus) appear resistant, although the underlying mechanism is poorly understood. The overall objective of my thesis was to understand the influence of humidity and huddling on the behavioural and physiological responses of hibernating big brown bats. To test my hypotheses, I used a captive colony of hibernating big brown bats (n = 20). Specifically, for Chapter 2, I first tested the hypothesis that big brown bats adjust huddling and drinking behaviour depending on humidity, to maintain a consistent pattern of periodic arousals, and therefore energy balance during hibernation. I found that bats hibernating in a dry environment did not differ in arousal/torpor bout frequency, or torpor bout duration throughout hibernation but drank at twice the rate as bats in a humid environment. Bats in the dry treatment also had shorter arousals, and huddled in a denser huddle, potentially to reduce rates of total EWL. During late hibernation, for Chapter 3, I used open-flow respirometry to test two additional hypotheses, first that phenotypic flexibility in total EWL helps explain the tolerance of hibernating big brown bats for a wide range of humidity relative to other bat species. I found that dry-acclimated bats had lower rates of total EWL, compared to bats acclimated to humid conditions. I then tested the second hypothesis that big brown bats can use huddling to mitigate the challenge of dry conditions. I found that, for humid-acclimated bats, rates of total EWL were reduced with huddling bats but there was no effect of huddling on EWL for bats acclimated to dry conditions. These results suggest that the ability of big brown bats to reduce rates of total EWL through acclimation may reduce the need to huddle with conspecifics to avoid water loss and thus dehydration. Overall, my thesis suggests that big brown bats use both behavioural and physiological mechanisms to reduce water loss which could allow them to exploit habitats for hibernation that are unavailable to other bat species and could also help explain their apparent resistance to WNS.
Le champ des possibles face au changement climatique (Colloque de l'Académie des sciences)
Authors: Planton Serge , Le Treut Hervé
Published: August 2021

Le colloque qui s'est tenu à l'Académie des sciences en janvier 2020 « Face au changement climatique, le champ des possibles » a permis de faire un tour d'horizon de solutions à mettre en oeuvre pour faire face au défi du changement climatique sous l'éclairage de la recherche scientifique. Nous revenons ici sur l'une des sessions de ce colloque au cours de laquelle un débat a été ouvert entre les intervenants et une vingtaine de jeunes étudiants, post-doctorants ou jeunes actifs invités à cette occasion. Ces échanges ont permis de revenir sur les questions du rôle social et politique des scientifiques, sur la place des sciences humaines sur les thèmes du colloque, sur les solutions à mettre en oeuvre dans le domaine social et l'interrogation sur certaines solutions technologiques, ainsi que sur les questions d'éducation et de formation.

The colloquium held at the Académie des sciences in January 2020 'Face au changement climatique, le champ des possibles' provided an overview of the solutions to be implemented to address the challenge of climate change in the light of scientific research. We return here to one of the sessions of this colloquium during which a debate was opened between the speakers and some twenty young students, post-doctorates, or young professionals invited on this occasion. These exchanges made it possible to return to the questions of the social and political role of scientists, to the place of the human sciences on the topics of the colloquium, to the solutions to be implemented in the social field and to the questioning on certain technological solutions, as well as on education and training issues.
MODELS OF SYSTEMS OF QUASIPERIODIC PROCESSES BASED ON CYLINDRICAL AND CIRCULAR IMAGES
Authors:   Ulyanovsk State Technical University, V.R. Krasheninnikov  , O.E. Malenova  ,   Ulyanovsk State Technical University, O.E. Malenova  ,   Ulyanovsk State Technical University, A.Yu. Subbotin  ,   Ulyanovsk State Technical University
Published: August 2021

The behavior of objects in many practical situations has a quasiperiodic character - the presence of noticeable periodicity with random variations of quasiperiods. For example, noise and vibration of an aircraft engine, hydroelectric unit, seasonal and daily fluctuations in atmospheric temperature, etc. In this case, the object can have several parameters, therefore the object is described by a system of several time series, that is, several random processes. The emerging monitoring tasks (assessing the state of an object and its forecast) require setting a model of such a system of processes and identifying it for a particular object based on the results of its observations. In this paper, to represent a quasi-periodic process, an autoregressive model is used in the form of sweeps of several cylindrical or circular images along a spiral. Choosing the values of a small number of parameters of this model, one can describe and simulate a wide class of systems of quasiperiodic processes. The problem of identifying a model is considered, that is, determining the values of its parameters at which it, in a certain sense, best corresponds to the actually observed process. This problem is solved using a pseudo-gradient adaptive procedure, the advantage of which is its real-time operation with low computational costs.
AUTOMATION OF THE DIAGNOSTIC PROCESS OF PCM PARAMETERS BASED ON PLIS AND MICROCONTROLLERS
Authors:   Ulyanovsk State Technical University, Dmitrienko G.V. , Mukhin D.V. ,   Ulyanovsk State Technical University
Published: August 2021

The article discusses issues of automation of diagnostics and control of PCM parameters based on FPGAs and microcontrollers.
FORMATION OF A TRANSPORT AND LOGISTICS CENTER: REGIONAL FEATURES
Authors:   Ulyanovsk State Technical University, Nuretdinov I.G. , Kostina T.I. ,   Ulyanovsk State Agrarian University named after P.A. Stolypin
Published: August 2021

This article discusses the main prerequisites for the creation of a transport and logistics center on the territory of the Ulyanovsk region.
ASSESSMENT AND PROSPECTS FOR THE DEVELOPMENT OF FREIGHT AND PASSENGER TRANSPORT
Authors:   Ulyanovsk State Agrarian University named after P.A. Stolypin, Navasardyan A.A. , Nuretdinova Yu.V. ,   Ulyanovsk State Technical University
Published: August 2021

The article considers the state and dynamics and prospects of the development of water transport in the Ulyanovsk region. The identification of the main problems provides an opportunity to accelerate further targeted investment.
AEROSPACE: DIGITAL DEVELOPMENT OF A SMART WING USING INTELLIGENT MATERIALS (SMA)
Authors:   Ulyanovsk State Technical University, Dzhabrailov T.A. , Shchukarev I.A. ,   Ulyanovsk State Technical University, Al-Mesri A.S. A. ,   Ulyanovsk State Technical University, Loshakov A.V. ,   Ulyanovsk State Technical University
Published: August 2021

The purpose of this article is to develop a power system using smart tools, such as Shape Memory Spectrum (SMA), to control the shape of the plane. Map the proposed smart wing includes S Springs that are attached to one end of the wing in the windshield profile. The second chain is connected each spring to the valve with the possibility of a cylinder. The upper and lower layers are made to spread the springs up and down. The summer strength is controlled by heat, which is the result of the current display. The smart suite is designed and tested to reflect the purpose of the natural interface. An efficient and effective pipeline management system is provided. Through testing and analyzing the principles, the technology improved and showed great potential for future use. Strategy - the presented system can be applied to other aircraft systems such as wings, fights, roads, and elevators. Parent / Account is a unique emotional sacrifice type. Stored materials are used to propel aircraft flow. This policy applies to wings, bars, riders, and lifters.
CONTROLS THE PLASTIC AMPLIFIER GAS DUE TO FLYING IN THE ASSEMBLY LINE
Authors:   Ulyanovsk State Technical University, Dzhabrailov T.A. , Shchukarev I.A. ,   Ulyanovsk State Technical University, Al-Mesri A.S. A. ,   Ulyanovsk State Technical University, Chernenkaya E.V. ,   Ulyanovsk State Technical University
Published: August 2021

This article test chip reactivity of carbon fiber (CFRP) samples were analyzed in a standard format. First, the nature of ultrasound uncertainty is determined, and this information is used to establish the value of the control that characterized the production of crystals up to 30 layers, with different procedures. Different input and set some Teflon to simulate the presence of desalination. Article explains that the choice for special disability (flexible, medium frequency and configuration templates), collapse can be carried out, the face of the new field in the form the respiratory tract.
IMULATION MODELING OF PROCESSES OF UNIT-ASSEMBLY PRODUCTION OF AIRCRAFT PRODUCTS
Authors:   Ulyanovsk State Technical University, Salaev R.A. , Fedorov A.A. ,   Ulyanovsk State Technical University, Salaeva A.V. ,   Ulyanovsk State Technical University
Published: August 2021

The article presents a universal simulation model of aggregate and Assembly production processes based on IDEF0 methods and numerical modeling methods. The problem statement is formed as follows: it is necessary to analyze the existing simulation tools, structure the Assembly production processes into separate classes and subclasses, describe the processes using the IDEF0 method, create a simulation model of the aggregate-Assembly production process with a link between economic and labor costs. The total labor intensity of Assembly processes and economic costs were considered as optimization criteria in this study. Numerical modeling and optimization of workflow parameters were performed in the AnyLogic simulation environment. The obtained simulation models can be used in the future in the management system of aviation enterprises, as well as in other production areas where the product is a complex system.
ANALYSIS OF MATHEMATICAL MODELS IN THE DESIGN OF NEURAL NETWORK FOR ESTIMATING THE UNIT PERFORMANCE
Authors:   Ulyanovsk State Technical University, Santalov A.A.
Published: August 2021

Prevention of emergencies in aviation technology is largely ensured by diagnostics of the functioning of its units. Often the performance criterion is the level of vibration that influences the decision to adjust the load or shut down the unit. The article discusses mathematical models when applying neural network methods for vibration diagnostics. When using cross-validation, the initial sample with vibration data is divided into several blocks, which are grouped into three samples: training, control, and test. To assess the effectiveness of diagnostics, three different quality criteria were used: mean error in the test sample, AUC, and F-measure. For a given set of initial data, the best fitted configuration turned out to be a neural network of three layers with 18 neurons in each layer, implemented in the MATLAB package. It uses a Bayesian regularization algorithm as a learning function. The percentage of the average error in recognizing the state of the considered aggregate using the neural network turned out to be 4.85, the AUC value was 0.885, and the F-measure was 0.827. Compared to a network built in automatic mode using the Statistics and Machine Learning Toolbox and Neural Network Toolbox machine learning libraries, the F-measure of the fitted network configuration is 6.7% higher.
Does the gut microbiome environment influence response to systemic breast cancer treatment?
Authors: Bruce Eilidh , Makaranka Stanislau , Urquhart Gordon , Elsberger Beatrix
Published: August 2021

The gut microbiome is a novel player in the pathogenesis and treatment of breast cancer. The term “microbiome” is used to describe the diverse community of micro-organisms existing within the gastrointestinal tract. The gut microbiome plays an important role in oestrogen metabolism through its ability to deconjugate oestrogens within the gut resulting in their reabsorption. Therefore, it is not unsurprising that “dysbiosis”, the disruption of normal gut microbiota composition, is now thought to play a role in the development of the disease, as women with breast cancer have been shown to have altered gut microbiota and this has been correlated with tumour characteristics. There is emerging evidence to suggest that the gut microbiota may also impact on breast cancer treatment, by mediating both drug efficacy and toxicity. The present review will discuss the influence of the gut microbiota on systemic treatments for breast cancer, including chemotherapy, anti-HER2 therapy, endocrine therapy and immunotherapy as well as other targeted treatments.
BOLI ASOCIATE GASTROENTERITEI CU ROTAVIRUS LA COPIII INTERNAŢI ÎN SPITALUL CLINIC DE BOLI INFECŢIOASE CONSTANŢA
Authors:   Spitalul Clinic de Boli Infecţioase, Constanţa, Diaconu Simona , Cambrea Simona Claudia ,   Spitalul Clinic de Boli Infecţioase, Constanţa,   Universitatea Ovidius, Constanţa, Petcu Lucian Cristian ,   Universitatea Ovidius, Constanţa, Rugină Sorin ,   Spitalul Clinic de Boli Infecţioase, Constanţa,   Universitatea Ovidius, Constanţa
Published: August 2021

Studiul nostru a inclus 505 de copii spitalizaţi în Spitalul Clinic de Boli Infecţioase Constanţa în 2011-2012 cu gastroenterită cu rotavirus. Am analizat fişele medicale ale pacienţilor şi am extras datele demografice, temperatura, frecvenţa vărsăturilor şi a scaunelor diareice. Am împărţit grupul de cazuri în 4 grupe: asocierea cu infecţii respiratorii (IR) – 160 cazuri, cu infecţii digestive (IDB) – 52 cazuri, boali eruptive (BE) – 11 cazuri şi un grup de infecţii cu rotavirus fără alte asociaţii – 282 de cazuri. S-au constatat diferenţe semnificative între cele patru grupuri în ceea ce priveşte numărul de scaune, numărul de vărsături, valoarea medie a temperaturii maxime, valoarea medie a zilelor de spitalizare.
FACTORS ASSOCIATED WITH SEVERITY OF DISEASE IN PSORIATIC ARTHRITIS: A CROSS-SECTIONAL STUDY
Authors:   Department of Rheumatology and Internal Medicine, Sf. Maria Clinical Hospital, Bucharest, Gudu Tania ,   Carol Davila University of Medicine and Pharmacy, Bucharest, Peltea Alexandra ,   Department of Rheumatology and Internal Medicine, Sf. Maria Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest, Balanescu Andra ,   Department of Rheumatology and Internal Medicine, Sf. Maria Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest, Bojinca Violeta ,   Department of Rheumatology and Internal Medicine, Sf. Maria Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest, Opris Daniela ,   Department of Rheumatology and Internal Medicine, Sf. Maria Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest, Predeteanu Denisa ,   Department of Rheumatology and Internal Medicine, Sf. Maria Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest, Ionescu Ruxandra ,   Department of Rheumatology and Internal Medicine, Sf. Maria Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest
Published: August 2021

Objectives. The objectives of this study were to evaluate the prevalence of disease severity in PsA and to assess the factors that might explain it. Methods. This was a cross-sectional study of unselected PsA patients. Severity was defined according to GRAPPA criteria of severity. Factors potentially associated with severity (demographical, clinical, laboratory variables, treatment related factors and comorbidities) were assessed by uni- and multivariate logistic regressions. Results. A total of 129 PsA patients were analysed: 77 (59.7%) women, mean±standard deviation age 53.5±11.8 years, and mean disease duration 7±7.4 years. Twenty-for patients (18.6%) had severe PsA. In the univariate regression, disease severity was associated with psoriasis duration, PsA duration, current moderate/severe skin disease, nail disease, history of corticotherapy, and total number of previous synthetic and biologic DMARDs. In the multivariate analysis, PsA severity was explained by the presence of current moderate/severe psoriasis – odds ratio 5.88 (95% confidence interval 1.39; 25.00) and history of corticosteroids – 4.65 (1.13; 18.87). Conclusion. PsA severity is best explained by the presence of moderate or severe psoriasis and past treatment with corticosteroids, but further longitudinal studies are needed to identify predictive factors.
CAPÍTULO 6 - TRABALHO E RENDA
Authors: Barbosa Ana Luiza Neves de Holanda , Campos André Gambier , Amorim Brunu Marcus Ferreira , Jayme Henrique Tadeu de Pina
Published: August 2021

Além da discussão da conjuntura do mercado de trabalho brasileiro, que terá como base os dados da Pesquisa Mensal de Emprego (PME) do Instituto Brasileiro de Geografia e Estatística (IBGE), este capítulo trata também da entrada do Supremo Tribunal Federal (STF) no debate sobre a terceirização do trabalho, que é objeto de litígio entre empregadores e trabalhadores há bastante tempo. Quanto às principais políticas do MTE, o capítulo aponta as tendências de financiamento, além do desempenho recente dos programas de seguro-desemprego, de abono-salarial, de intermediação de mão de obra e de qualificação profissional. Por fim, discute brevemente os principais desafios para o próximo governo na área de mercado de trabalho.
TD 2682 - Produtividade do algodão no Brasil : uma análise da mudança estrutural
Authors: Alcantara Isabela Romanha de , Vedana Roberta , Vieira Filho José Eustáquio Ribeiro
Published: August 2021

O cultivo de algodão arbóreo, que representava quase um quarto da produção nacional e ocupava metade da área colhida na década de 1970, foi praticamente extinto, enquanto a produção de algodão herbáceo cresceu e se consolidou a partir dos anos 2000. Este estudo avaliou a produtividade do algodão herbáceo de 1974 a 2019, período em que o país minimizou a dependência externa e se tornou referência no mercado internacional, respondendo por 15,6% das exportações mundiais. Procurou-se verificar uma possível quebra estrutural da produtividade. A praga do bicudo, a otimização dos recursos naturais e a melhoria tecnológica, como também a criação de organizações e associações de produtores, estimularam a reestruturação produtiva, em que as unidades produtoras foram realocadas no território. Os resultados indicaram que a produtividade apresentou mudança de intercepto e de tendência em 1999. A taxa de crescimento anual foi de 2,03% antes e 2,43% posteriormente. A mudança de nível ficou em 81,91%. As transformações institucionais e produtivas foram responsáveis pelos ganhos de produtividade, o que permitiu a expansão produtiva e contribuiu com um efeito poupa-terra de 12,2 milhões de hectares no tempo.
Çay Toplama İşlerinin İş Sağlığı ve Güvenliği Açısından Değerlendirilmesi
Authors: PARLAK Turgay
Published: August 2021

Ülkemizin endemik türlerinden olan çay, yaz aylarında üç sürgün halinde toplanmaktadır. Doğu Karadeniz bölgesine ait bu ürünün toplanması ağır bir iş aktivitesini gerektirmektedir. Bu kapsamda yapılan faaliyetlerin iş sağlığı ve güvenliği açısından değerlendirilmesi önem arz etmektedir. Çay toplama işleri aile bireyleri tarafından gerçekleştirilen bir etkinliktir. Ancak yaşanan Covid-19 salgını, toplama işinin zorluğu, yeni neslin başka şehirlerde veya bulundukları yerlerde iş hayatına atılmaları nedeniyle çay toplama işlerinde değişimin yaşanabileceği sinyallerini vermektedir. Bu çalışmada aktif olarak çay toplama işlemi gerçekleştirilmiştir. Çay toplamanın geçmişten günümüze gelişimi üzerinde durulmuş, iş sağlığı ve güvenliği adına değerlendirmelerde bulunulmuştur.İlerleyen dönemlerde bir iş koluna dönüşebilecek bu faaliyetteki tehlikelerin belirlenmesi, çalışanların bilinçlendirilmesi ve bu alana özgü yaklaşımların belirlenmesi adına yararlı olabilecek bir çalışma yapılarak literatüre kazandırılması amaçlanmıştır.
BEHAVIOR AND INFLUENCE MECHANISMS OF ENTERPRISES USING GOVERNMENT SUBSIDIES: EVIDENCE FROM CHINA
Authors: Yan Xiaochang , Huang Guitian
Published: August 2021

This study investigates the effects of different subsidy use patterns on economic performance, the effect mechanisms, and differences among enterprises with heterogeneous economic performance. A theoretical model is built to analyze the factors influencing subsidy use. Applying ordinary least squares and panel quantile regressions on panel data of China’s 3,565 A-share listed companies from 2007 to 2017, we find that subsidies can significantly improve economic performance. Specifically, enterprises usually use subsidies in three different ways (i.e. R&D input, expansion of production capacity for existing products, and human resource training), and the positive impact of these three use patterns on economic performance is moderated by two factors (i.e. the proportions of both R&D operating expenses and human resource training cost) in different degrees. Moreover, the effects are more significant in the lower quantile of economic performance; hence, heterogeneity of economic performance must be considered when formulating relevant policies.
ASASSN-14ms: The Most Energetic Known Explosion of a Type Ibn Supernova and Its Physical Origin
Authors: Wang Xiaofeng , Lin Weili , Zhang Jujia , Zhang Tianmeng , Cai Yongzhi , Zhang Kaicheng , Filippenko Alexei V. , Graham Melissa , Maeda Keiichi , Mo Jun , Xiang Danfeng , Xi Gaobo , Yan Shengyu , Wang Lifan , Wang Lingjun , Kawabata Koji , Zhai Qian
Published: August 2021

ASASSN-14ms may represent the most luminous Type Ibn supernova (SN Ibn) ever detected, with an absolute U-band magnitude brighter than −22.0 mag and a total bolometric luminosity >1.0 × 1044 erg s−1 near maximum light. The early-time spectra of this SN are characterized by a blue continuum on which are superimposed narrow P Cygni profile lines of He i, suggesting the presence of slowly moving (∼1000 km s−1), He-rich circumstellar material (CSM). At 1–2 months after maximum brightness, the He i line profiles become only slightly broader, with blueshifted velocities of 2000–3000 km s−1, consistent with the CSM shell being continuously accelerated by the SN light and ejecta. Like most SNe Ibn, the light curves of ASASSN-14ms show rapid post-peak evolution, dropping by ∼7 mag in the V band over three months. Such a rapid post-peak decline and high luminosity can be explained by interaction between SN ejecta and helium-rich CSM of 0.9 M
⊙ at a distance of ∼1015 cm. The CSM around ASASSN-14ms is estimated to originate from a pre-explosion event with a mass-loss rate of 6.7 M
⊙ yr−1 (assuming a velocity of ∼1000 km s−1), which is consistent with abundant He-rich material violently ejected during the late Wolf–Rayet (WN9-11 or Opfe) stage. After examining the light curves for a sample of SNe Ibn, we find that the more luminous ones tend to have slower post-peak decline rates, reflecting that the observed differences may arise primarily from discrepancies in the CSM distribution around the massive progenitors.
A Short Mean Free Path at z = 6 Favors Late and Rapid Reionization by Faint Galaxies
Authors: Cain Christopher , D’Aloisio Anson , Gangolli Nakul , Becker George D.
Published: August 2021

Recent measurements of the ionizing photon mean free path (

λ

912

mfp

) at 5 < z < 6 suggest that the IGM was rapidly evolving at those times. We use radiative transfer simulations to explore the implications for reionization, with a focus on the short value of

λ

912

mfp

=

3.57

−
2.14

+
3.09

cMpc h
−1 at z = 6. We introduce a model for subresolution ionizing photon sinks based on radiative hydrodynamics simulations of small-scale IGM clumping. We argue that the rapid evolution in

λ

912

mfp

at z = 5 − 6, together with constraints on the metagalactic ionizing background, favors a late reionization process in which the neutral fraction evolved rapidly in the latter half. We also argue that the short

λ

912

mfp

(
z
=
6
)

points to faint galaxies as the primary drivers of reionizaton. Our preferred model, with

λ

912

mfp

(
z
=
6
)
=
6.5

Mpc h
−1, has a midpoint of z = 7.1 and ends at z = 5.1. It requires three ionizing photons per H atom to complete reionization and a LyC photon production efficiency of

log
(

f

esc

eff

ξ

ion

/

[

erg

−
1

Hz
]
)
=
24.8

at z > 6. Recovering

λ

912

mfp

(
z
=
6
)

as low as the measured central value may require an increase in IGM clumpiness beyond predictions from simulations, with a commensurate increase in the photon budget.