bluuebunny/crossref_metadata_2025 huggingface dataset:
Reductive annuloplasty with autopericardium in surgical treatment of mitral insufficiency
Authors: Sotnikov Artem V. , Melnikov Michail V. , Bitieva Anna M. , Kolmakov Eduard A.
Published: April 2022

BACKGROUND: Despite the widespread usage of all-type rings in the surgical treatment of patients with mitral valve insufficiency (MV) and dilatation of its fibrous annulus, the researches on this topic are in progress.
AIM: To study the short- and long-term results of narrowing annuloplasty of the MV utilizing an autopericardium strip of calculated length.
MATERIALS AND METHODS: The study group consisted of 21 patients (average age 60.9 4.3 years, women 23.8 %) with MV insufficiency of non-rheumatic ethiology. The narrowing of the fibrous annulus during valve reconstruction has been performed along with the posterior 2/3 of their circle using interrupted horizontal sutures. With those sutures, an autopericardial strip of the calculated length has been secured to the annulus. The length of the strip has been calculated according to the original method, according to the data obtained during preoperative transesophageal echocardiography. The length of the strip was 2/3 ∙ D (mm), where D the existing length of the anterior leaflet of the MV in the middle portion from the fibrous annulus to the free edge in the zone of the A2 segment. The control group consisted of 38 patients with non-rheumatic MV insufficiency (average age 59.1 3.5 years, women 23.7 %); the strengthening and narrowing of the fibrous annulus have been performed using a strip made from a wicker vascular prosthesis. The length was 55 mm, equal for all the patients. In both groups, in addition to the narrowing of the fibrous annulus, other types of mitral valve-sparing surgery (partial resection of MV leaflets, suture leaflets techniques, their combination) and combined procedures (coronary bypass surgery, left ventricle reconstructions for postinfarction aneurysms) have been also performed.
RESULTS: In the studied groups, the safety and reliability of the performed restrictive MV annuloplasty procedures have been demonstrated. During the follow-up period up to 8 years (average 3.5 0.7 years), there was no recurrence of significant mitral regurgitation, which would require repeated surgery in both groups. Narrowing annuloplasty of the fibrous annulus of MV with a strip from the autopericardium of an individual calculated length allows to perform a more accurate anatomical correction of the valve compared with the control group. The existing methods of mitral annuloplasty, their advantages and disadvantages are discussed.
CONCLUSIONS: The proposed method of restrictive annuloplasty of the MV with an autopericardial strip of the calculated length allows to perform a reliable and safe correction of the dilated fibrous annulus in patients with mitral insufficiency during valve-preserving operations.
Drug-induced pleural diseases
Authors: Ostroumova Olga D. , Smetneva Natalya S. , De Valeriya A.
Published: April 2022

The problem of differential diagnosis of pleural diseases involves a large number of pathological conditions causing its damage, which physicians are not aware about. Drug-induced (DI) lesion occupies a special place in the structure of pleural diseases, both due to the relatively low prevalence and due to insufficient awareness of doctors about the presence of such adverse reactions in drugs. At the same time, thanks to modern information about the morphology, physiology and pathophysiology of the pleura and pleural cavities, the diagnosis and treatment of pleural diseases are becoming more and more effective. The article presents the data of modern literature and electronic databases of The Drug-Induced Respiratory Disease Website about DI lesions of the pleura. This review provides information about the main types of DI lesions of the pleura and the scope of drugs that cause these reactions. Ultimately, doctors awareness of drug-induced pleural diseases can ensure timely diagnosis of these conditions, correct therapy, and ultimately improve the quality of medical care.
Gender peculiarities of critical lower limb ischemia
Authors: Glushkov Nikolay I. , Puzdriak Petr D. , Agurbash Anastasia N. , Razepin Anatoly V. , Ivanov Mikhail A.
Published: April 2022

BACKGROUND: Development of critical ischemia of lower limbs in patients with atherosclerosis causes negative consequences due to the high probability of detecting multilevel changes, as well as identifying coronary and carotid pools.
АIM: The aim of the study was to investigate gender differences in critical lower limb ischemia of atherosclerotic genesis following reconstructive interventions.
MATERIALS AND METHODS: Arterial reconstructions have been performed in 261 patients with peripheral atherosclerosis (95 women and 166 men). The specific features of reconstructive interventions have been taken into account; complications and the number of amputations have been analyzed in the early period.
RESULTS: Higher pulse pressure has been registered in the female group; tibial arteries have been affected significantly more frequently (p 0,05). Thrombosis of the operated segment has been observed more frequently in the male patients at the stage of critical ischemia; in the case of claudication the complications were sporadic.
CONCLUSIONS: The best results of reconstructive care in men and women with peripheral atherosclerosis at the claudication stage determine the vector of active tactics in the absence of conservative treatment results.
N-acetyl-p-benzoquinonimine metabolite as a factor of possible neurotoxicity of paracetamol
Authors: Vlasova Yuliya A. , Zagorodnikova Ksenia A.
Published: April 2022

BACKGROUND: Currently, the possible negative effects of paracetamol on the central nervous system are widely discussed in the modern scientific literature. The relationship between the intake of paracetamol during pregnancy by women and the risk of autism spectrum disorders in their children is being studied. However, such conclusions are often met with serious criticism as there are many questions about the methods of assessing behavioral disorders and processing research results. Therefore, experimental data obtained on neuronal cells may be a sufficient ground to confirm or refute assumptions about the neurotoxicity of paracetamol and its metabolites.
AIM: To study the effect of paracetamol and its metabolite N-acetyl-p-benzoquinonimine (NAPQI) on the neurons of the cerebral cortex of fetal rats.
MATERIALS AND METHODS: The study of the effect of paracetamol and its metabolite NAPQI on cell viability has been carried out by a method based on the reduction of 3-(4,5-dimethylthiazole-2-yl)-2,5-tetrazolium bromide (MTT).
RESULTS: It has been shown that during preincubation of neurons in the cerebral cortex of the rats with paracetamol at a concentration of 1 mg/ml for 24 hours and subsequent incubation with 0.3 mM hydrogen peroxide, both hydrogen peroxide and paracetamol itself reduce the viability of neurons. Joint incubation with paracetamol and hydrogen peroxide also reduces the viability of neurons. The same effect of paracetamol and its metabolite is observed with the joint preincubation of paracetamol or NAPQI and hydrogen peroxide.
CONCLUSIONS: Paracetamol as well its metabolite NAPQI reduce the viability of neurons in the fetal cortex of rats.
The Role of Social Media in the Transition from a Sustainable Environment to Decent Work: The Case of Street Collectors in Turkey
Authors: CANTÜRK Safure
Published: April 2022

Recycling practices, which are an indispensable part of the sustainable development model in developing
countries within the scope of combating climate change, brought the issue of waste collection and street
collection to the agenda. In developing countries like Turkey, where source separation is impossible, street
collection has become a vital participant in the recycling market. This research examines the impacts of the
economic worth of recyclable wastes on the social status of street collectors and their transfer to a decent
work environment, as well as the function of the media in this transition. After reviewing the literature
and legislation, this article applies content analysis on the relevant social media posts between the date
of October 3, 2021, when the local governments in Istanbul made a police raid on street collectors, and
October 30, 2021, when the street collectors issue was on the agenda. As a consequence of the increased
social and environmental awareness caused by climate change on a global scale, the legislative arrangements
made at the national level have enabled the waste to gain economic value. The organized street collectors’
defence of their rights and public announcement of their grievances through their representatives under
the pressure of local governments had a societal impact on social media and entered into politicians’ and
government’s agendas. Accordingly, in the past, perceptions of street collectors as “dirty”, “criminal”, and
“poor” all of which were directly related with poverty in society, have been replaced by perceptions of
“environmental protection”, “worker who earns their bread” and “zero waste stakeholder”. The analysis
shows that 79% of Twitter user shares support street collectors and view the police raid negatively. On the
other hand, only 2% of the users see the police raid as necessary for “maintaining public order”. As a result,
sustainable environmental policies carried out within the scope of combating climate change have improved the economic situation of street collectors, positively affecting their organization and the improvement of
decent work environments. These developments have affected street collectors to increase their visibility in
the media and change their social perceptions positively.
Inquiries on Optimizing Publicity for Graduate Enrollment by Means of Informatization
Authors:   University of Electronic Science and Technology of China, Sichuan, China, Guo Zhengyu , Wang Meng , Ma Liang , Yan Yongshuai
Published: April 2022

The development of universities and the cultivation of high-level talents have put forward a higher requirement for postgraduate education. It is of great importance for the advancement in graduate education to promote the quality of the source of students. Therefore, it is high time that the publicity for graduate enrollment should be optimized. To solve the problems underlined in the process of the publicity, such as, the increasing need for personalization among students, the little interest in traditional ways of publicity, and the low accuracy of the contents in conventional publicity, constantly perfecting working system as well as innovating operating methods has become the key measure to improve actual working efficiency in the information age. This paper is based on the case of graduate enrollment publicity in UESTC, into which the idea of informatization is introduced with the tools of information used, making an inquiry on accurate strategies for ways, targets, contents, etc, in the process of publicity, while offering a train of thought and proper proposals. The thesis mentioned in this paper can be expected to give convictive reference when carrying out the work of publicity for graduate enrollment in the future.
To study the effect of early zinc supplementation on growth of low birth weight infants- A randomised control trial
Authors: Gaikwad Sarika , Patel Jaikumar , Kundalwal Ashwini
Published: April 2022

The present study was carried out with aim to study the effect of early zinc supplementation on growth of low birth weight infants — A randomised control trial in the Department of Paediatrics at Government Medical College and Hospital, to study effect of zinc supplementation on LBW infants. The registered subjects were then randomized into Intervention (Group I, Case) and Non-Intervention (Group II, control) groups using computer generated random number technique. Cases (Group I) were given zinc supplements Syrup Zinc acetate (Syp. Zinconia 5ml=20mg) 2mg/kg single dose in morning at 8 a.m. daily and multivitamins drops 10 drops per day (Vit.A 375 µg, Vit.B1-B6, Vit.D 5µg) for duration of 6 weeks and Controls (Group II) were given multivitamins drops (Vit.A 375 µg, Vit.B1-B6, Vit.D 5µg) 10 drops per day for duration of 6 weeks.

There was no significant difference in cases and controls in respect to males and females. No significant difference (p value >0.05) in pattern of intrauterine growth in cases and controls.Fifty percent of our study subjects in both group were of weight more than 1400 grams.

Zinc had significant effect on weight gain of pre-terms (AGA and SGA) and term AGA only at the end of 6 weeks. There was only significant effect on length in mean difference at 6 weeks when compared to at 48 hours. There was highly significant difference in supplement group (cases) in weight/length at 6 weeks with minimal or insignificant effect on chest circumference and head circumference.
Identification and Prioritization of Key Performance Indicators for the Construction Small and Medium Enterprises
Authors: OKUDAN Ozan , BUDAYAN Cenk , ARAYICI Yusuf
Published: April 2022

The central purpose of this study is to propose a set of key performance indicators (KPIs) to measure the performance of construction small and medium enterprises (SMEs) that have been ignored in the performance management literature so far. Secondly, this study aims to determine the most crucial KPIs by using the fuzzy VIKOR method to improve cost-effectiveness in the performance measurement of construction SMEs. At the first stage of this study, KPIs proposed by the existing studies were identified via a literature survey. Then, the KPIs extracted from the literature survey were verified, and eight new KPIs were proposed as a result of focus group discussions with 12 participants who are owners/managers of construction SMEs. Additionally, the Balanced Scorecard (BSC) was modified in line with the needs of construction SMEs, and each KPI was grouped into a BSC perspective. A questionnaire survey followed this grouping to gather data associated with the KPIs. Based on these data, KPIs were prioritized by using the fuzzy VIKOR. It is found out that external indicators such as “effectiveness of monitoring market conditions” are determined as the most important KPIs, in contrast to the findings in the studies about large-scale companies. Furthermore, “Attracting new customers”; “Reliability of financial performance” and, “Competency of managers” are identified as important indicators. Four KPIs proposed by experts during the focus group discussion are placed among the most important KPIs, which highlights the need for a specific performance measurement system (PMS) for construction SMEs.
Exploratory Factor and Reliability Analysis of Financial Literacy Instrument to Assess Low-Income Groups in Malaysia
Authors: Munisamy Ananthan , Sahid Sheerad , Hussin Muhammad
Published: April 2022

Financial literacy (FL) helps individuals make more assertive and efficient financial decisions. However, there is limited knowledge regarding the dimensions of FL as pertaining to low-income or Bottom 40% (B40) households in Malaysia. Therefore, the present study examined the reliability and validity of the B40 financial literacy measurement scale. A self-administered survey questionnaire was employed. The sample consisted of 100 respondents randomly selected from B40 households in Johor, Malaysia. The analysis was carried out through Exploratory Factor Analysis (EFA) via IBM-SPSS version 22.0 software. To measure the FL constructs, the study initially developed 59 items; however, six items were deleted as the factor loading was below the 0.50 cut-off point, while 53 items were retained as their factor loading was more than 0.50. Because the study validates the dimension that leads to improved FL, the findings are particularly beneficial to Malaysian B40 households who have been identified as the most vulnerable group; the findings will help action to be taken to improve the FL levels of B40 households.
Kokoši s tremi nogami in beli konji, ki niso konji: teorije in paradoksi antičnih kitajskih nomenalistov
Authors: S. Rošker Jana
Published: April 2022

Pričujoči članek predstavlja eno od najzanimivejših filozofskih šol kitajske antike, namreč Šolo imen ali Šolo nomenalistov. Razprave te šole nas v marsičem spominjajo na osnove zahodne formalne logike, vendar izhajajo iz drugačne osnove: nomenalistov namreč niso toliko zanimale zakonitosti mišljenja, kot njihova konkretna aplikativnost, torej umetnost »pravilnega« mišljenja kot predpogoj natančnejšega izražanja. Zato so predstavniki te šole posvečali veliko pozornosti izrazni obliki in semantičnim konotacijam pojmov, kategorizacijam, razčlenitvam in definicijam, ki so zapisane v obliki disputov. Skozi analizo treh najpomembnejših predstavnikov te idejne struje avtorica poskuša preseči na zahodu še vedno razširjene predsodke o tem, da je antična kitajska filozofija temeljila zgolj na moralnih in proto-teoloških diskurzih.
Poselitvena struktura dolnjega Prekmurja v 17. in 18. stoletju
Authors: Sedar Klaudija
Published: April 2022

V prispevku je izpostavljen južni oziroma dolnji del Prekmurja, ki je kot prekmurski del beksinskega arhidiakonata med leti 1094−1777 spadal v zagrebško škofijo. V ta del je poleg madžarskih župnij spadalo tudi pet slovenskih župnij: Dolnja Lendava, Turnišče, Dobrovnik, Bogojina in od leta 1760 še župnija Beltinci. Poudarek je na slednjih, in sicer skuša prispevek na podlagi razpoložljivih in dostopnih virov ter literature prikazati poselitveno stanje in nastale spremembe skozi 17. in 18. stoletje. Spremembe so nedvomno bile, saj je bilo Prekmurje v 17. stoletju prežeto z nevarnostmi kot so Turki in njihovi vpadi ter s tem posledično razne bolezni. V 18. stoletju, ko so turški vpadi prenehali, pa je nastopilo mirnejše obdobje z višjo gospodarsko ravnjo in to je tudi eden ključnih vzrokov, da je prebivalstvo začelo postopoma naraščati.
Jezikovna politika in vrednotenje znanstvene odličnosti
Authors: Nečak Lük Albina
Published: April 2022

Med tematikami vrednotenja znanstvene odličnosti in položaja visokošolskih učiteljev se vztrajno pojavlja tudi vprašanje izbire oz. rabe jezika/ov v pedagoškem procesu na visokošolski ravni in še zlasti pri objavljanju raziskovalnih izsledkov. V prvi vrsti se razpravlja o uradno podprtem, višjem vrednotenju objav znanstvenega dela v tujem/ angleškem jeziku oz. v tujem znanstvenem tisku (sistem ocenjevanja ARRS). Prispevek razčlenjuje možne posledice nedorečene jezikovne politike in prakse pri uvajanju internacionalizacije v slovenski visokošolski prostor ter razgrinja razloge, ki narekujejo pozorno in smotrno vzpostavljanje pa tudi spremljanje razmerij med slovenščino in angleščino v visokošolski pedagoški dejavnosti in v znanosti.
Nekatera odprta vprašanja pravnega položaj delavskih predstavnikov v organih upravljanja
Authors: Franca Valentina
Published: April 2022

Prispevek se osredotoča na pravni položaj delavskih predstavnikov v organih upravljanja gospodarskih družb in odpira nekatera trenutno aktualna vprašanja v praksi. Predstavljeni so trendi na trgu dela in njihov morebitni vpliv na uresničevanje delavskega soupravljanja in s tem tudi na položaj delavskih predstavnikov v organih upravljanja. Analiza zakonodaje, raziskav ter drugih sekundarnih virov je pokazala, da je mogoče tudi s pravnega vidika znatno prispevati k večji legitimnosti delavskih predstavnikov v organih upravljanja. Vsekakor bi k večji učinkovitosti delovanja delavskih predstavnikov v organih upravljanja prispevala tudi prenovljena zakonodaja, saj je obstoječa znatno zastarela.
Metonimija kot konceptualni in jezikovni fenomen
Authors: Bernjak Elizabeta , Fabčič Melanija Larisa
Published: April 2022

Prispevek obravnava pojem metonimije z vidika kognitivne lingvistike. Metonimija je bila (skupaj z metaforo) tradicionalno pojmovana kot »jezikovni okras«, v javnosti je še vedno živa misel, da normalni ljudje  v vsakdanji jezikovni rabi ne uporabljajo metonimičnih izrazov, kar seveda ne drži. Metonimične izraze mnogi smatrajo za neke vrste jezikovno deviacijo, saj v njih besed ne uporabljamo v pričakovanem dobesednem pomenu. V vsakdanji jezikovni rabi se govorcem ne zdi nenavadno, če slišijo ali izrečejo metonimične izraze, na videz brez težav razumejo povedi, ki bi lahko bili v dobesednem pomenu nesmiselni: Prebrati moram Cankarja. Mleko se je prevrnilo. Avtobusi stavkajo. Pri navedenih »nedobesedno« rabljenih izrazih obstaja med običajno referenco izbranega jezikovnega izraza in vsebino, ki jo nameravamo izraziti, odnos bližine. V prispevku pojmujemo metonimijo kot kognitivno-lingvistični fenomen.
Vračanje proizvodnje v Evropo – mit ali resnica?
Authors: Palčič Iztok , Ojsteršek Robert
Published: April 2022

Vračanje predhodno preseljene proizvodnje v tujino nazaj v matične države postaja vse bolj pomembna tema političnih in akademskih razprav. Kljub temu empirični dokazi o vračanju proizvodnje še vedno obstajajo predvsem v obliki študij primerov. V prispevku so predstavljeni empirični dokazi o vračanju proizvodnje iz velikega vzorca evropskih proizvodnih podjetij. Podatki kažejo, da je vračanje proizvodnje v evropskih podjetjih še vedno precej redek pojav. Približno 4 % vseh podjetij v našem vzorcu je v obdobju od 2013 do 2015 vrnilo proizvodnjo v matično državo. Najpogostejši razlogi za nezadovoljstvo so izguba fleksibilnosti, izguba ustrezne kakovosti izdelkov, proizvedenih v tujini, in nezasedene kapacitete doma. Fleksibilnost in težave s kakovostjo so zlasti pomembni za podjetja, ki vračajo proizvodnjo iz azijskih držav. Vračanje proizvodnje je najbolj pogosto pri proizvajalcih končnih izdelkov iz v visoko tehnoloških sektorjih, še zlasti na področju električne opreme, informacijske in komunikacijske opreme ter avtomobilske industrije.
Izobraževanje - družbena samorefleksij
Authors: Hedžet Tóth Cvetka
Published: April 2022

Znotraj evropske skupnosti danes govorimo o investicijski državi in ne več o socialni državi, kot smo še v nedavni preteklosti. Prav tako razpravljamo o spreminjanju osebnosti, zato je v najnovejši dobi, ki se samovšečno imenuje posthistorična doba po izteku utopij, dvestoletne zgodbe revolucij in sesutju socializma boljševiškega izvora (1789−1989), zelo pogosta beseda individualizacija − s prizvokom izrazite nesolidarne, egoistične drže − in ne več družba, saj družbe kot take naj sploh ne bi bilo; so samo posamezniki in družboslovje skupaj s humanistko naj bi pomenilo predvsem nekakšno nadziranje družbe. Mnoge je privatizacijski zagon z vsem svojim priseganjem na individualizacijo pripeljal do spoznanja, da vsa smejoča in hahljajoča se demokracija, odeta v belino kalodontnega nasmeška, ni nič drugega kot simptom represivne družbe.
Sokratska pot k izjemnost
Authors: Pirc Tadej
Published: April 2022

Članek pričnem s historičnim orisom Platonove šole. Najprej se osredotočim na Akademijo kot institucijo in osvetlim nekatere ključne vidike njenega delovanja, ki se kažejo v Platonovi želji po kultivaciji in treningu v političnih zadevah za boljšo prihodnost družbe. Ob tem kratko prikažem organizacijsko strukturo in način oziroma sokratsko metodo poučevanja ter raziskovanja pod Platonovim vodstvom, ki je temeljila na razpravi. V osrednjem delu prispevka se odvrnem od historične in metodološke razprave k normativni eksplikaciji pomena odnosa med učiteljem in učencem ter spodbujanja specifičnih nadarjenosti kot osrednjega pristopa za sodobne izobraževalne institucije. Slednje skušam predstaviti skozi Nietzschejevo kritiko demokratičnih izobraževalnih ustanov, ki primarno zasledujejo dostopnost formalne izobrazbe ter enakost kurikuluma za vse učence, medtem ko izjemnost in spodbujanje posebnih talentov posameznih učencev in študentov puščajo ob strani.
Funkcija in pomen metafor v medicini z vidika kognitivnega jezikoslovja
Authors: Fabčič Melanija Larisa , Bernjak Elizabeta
Published: April 2022

Kognitivistični pristop k teoriji metafore izhaja iz spoznanja, da je metafora del človekovega konceptualnega sistema in šele drugotno tudi jezika, saj se v njem zrcalijo mentalni procesi. Metafora je torej prvina spoznavanja in zato nepogrešljiva v znanosti in njenem izrazju, tudi v medicini. Ena izmed najopaznejših značilnosti medicinskega diskurza je terminologija, ki ima poimenovalno (nominativno) in spoznavno (kognitivno) funkcijo.  Tako kot drugi jezikovni izrazi se tudi strokovni izrazi oblikujejo v procesu konceptualizacije, tj. na podlagi konceptualnih metafor, ki se v procesu simbolizacije jezikovno realizirajo. Na podlagi analize izbranih zgledov iz medicinskih besedil postuliramo, da je metafora univerzalno prisotna tudi v medicinskem diskurzu. Metaforični medicinski termini imajo posebne konceptualne pomene tako za strokovnjake kot tudi za laike, ko postanejo del splošnega terminološkega inventarja, ki je tesno povezan z življenjem posameznika in skupnosti.
Vloga Jovana Cvijića v ugodnem razpletu borbe za slovenske severne meje in njegov vpliv na slovensko geografijo
Authors: Josipovič Damir
Published: April 2022

Vpliv Jovana Cvijića na današnjo podobo slovenske nacije, njene geografske in prostorske razsežnosti, vključno z določanjem meje v prostoru in času, kot tudi znaten vpliv njegove znanstvene širine na vodilne slovenske geografe srede 20. stoletja je v Sloveniji skoraj neznan in zato neprepoznan. Zato članek najprej predstavlja institucionalizacijo slovenskega izobraževalnega sistema in vzpostavitev geografije kot samostojne discipline v relaciji do formiranja današnjega slovenskega državnega ozemlja. V tem kontekstu nato opredeljuje okoliščine lingvističnega združevanja štirih različnih in ločenih regionalnih jezikovnih standardov v enega, ki bo jasno ločen od drugih neslovanskih sosedov, ne pa tudi od slovanskega zaledja. Prispevek analizira zgodovinsko vlogo in pomen Jovana Cvijića v procesu izgrajevanja slovenskih državnih meja, posebej severnih, pa tudi v odnosu do takratnih etno-psiholoških opredelitev populacij in njihovega svojstvenega razmejevanja. In končno, prispevek ocenjuje Cvijićev vpliv na disciplinarno formacijo slovenskih geografov.
Mathematical Modeling of Heat and Mass Transfer During Aerodynamic Heating of the Nose Parts of Hypersonic Aircraft
Authors: Formalev V.F. , Kolesnik S.A. , Garibyan B.A.
Published: April 2022

The study focuses on heat and mass transfer on the side surfaces of blunt nose cones of hypersonic aircraft under aerodynamic heating conditions and formulates the problem of viscous flow and heat and mass transfer in dynamic, thermal, and diffusion boundary layers. After minor simplifications, we found approximate analytical solutions related to the gas-dynamic, thermal, and diffusion characteristics of the dissociating flow and obtained closed analytical expressions for the distribution of enthalpy and concentrations of the gas mixture components over the thickness of the boundary layers. Furthermore, by the derivatives of the enthalpies and concentrations distributions with respect to the vertical variable on the wall, we determined convective and diffusion heat fluxes to the aircraft surface. Using the balance between the supplied convective-diffusion heat fluxes and the fluxes removed due to radiation and heat elimination into the body, we obtained a nonlinear equation for the wall temperature, which is solved numerically. Numerical results are obtained and analyzed on convective-diffusion heat fluxes and wall temperatures of hypersonic aircraft, depending on the Mach number and flight altitude in a wide range of values, which make it possible to determine the boundaries of speeds and altitudes at which the mass of the heat-shielding coating is not removed. Finally, we investigated the influence of the catalytic properties of the aircraft surface on heat transfer in the same ranges of the Mach number and flight altitude
Non-Stationarity Effects in Polymer Membrane Swelling as Studied by Infrared Fourier Spectrometry Technique
Authors: Bunkin N.F. , Bashkin S.V. , Gudkov S.V. , Kiryanova M.S. , Kozlov V.A.
Published: April 2022

Nafion polymer membrane swelling mode in water poured into a cuvette, the cuvette characteristic size of the order of the membrane thickness, was investigated experimentally using the infrared Fourier spectrometry. Interest in these studies is based on the fact that, when a Nafion membrane is swelling in a cuvette sized much larger than the membrane thickness, polymer fibers are effectively unwinding into the water volume. However, this process was not studied in the case, where the area that could be occupied by the unwound polymer is limited by the cuvette size. It was shown that temporal dynamics of the polymer transition from a hydrophobic state to the hydrophilic state had several specific features depending on the cuvette size, isotopic composition, ion content and water pretreatment. It was suggested that dynamics of the cavity formation and collapse should be influenced by the dissolved gas nanobubbles. Indeed, the investigated liquid samples were not degassed. When polymer fibers are unwound, protrusions and irregularities appear on the hydrophobic membrane surface playing the role of nucleation centers for the surface nanobubbles. These nanobubbles are "carried away" by the growing fibers towards the cuvette window, and coalescence (collapse) of the nanobubbles could occur in the area of arising mechanical stresses, which should contribute to formation of a cavity. This is indirectly confirmed by results obtained in this work
Improved Ephemeral Search and Nepenthes Algorithms for Diminution of True Power Loss
Authors: Kanagasabai L.
Published: April 2022

In this paper Improved Ephemeral Search Algorithm and Nepenthes Algorithm are used for solving the power loss lessening problem. Ephemeral Search Algorithm is physics-based algorithm that mimics the ephemeral actions of switching circuits which made by one or more intermediary switching expedients (like inductor and capacitor circuits). Actions of inductor and capacitor circuits are mathematically formulated to design the algorithm. To improve the convergence rate of the algorithm and Improved Ephemeral Search Algorithm has been designed by integrating chaotic opposition learning approach (to engender superior preliminary populations). Logistic chaos possesses arbitrary, ergodic, and systematic characteristics and chaotic variables used for optimization exploration which features the algorithm to evade local optimum, endorse the population multiplicity. Subsequently an adaptive inertia weighting approach is used (to balance exploration and exploitation capability with good convergence speed) then a neighbour learning (dimension) approach is utilized (to uphold the population assortment with every iteration of weight pursuing). Learning between neighbours (dimensional), modernizing the coordinates of the present entity by means of some data (dimensional) of adjacent entities and the data (dimensional) of an entity is arbitrarily chosen from the total population. Then in this paper Nepenthes Algorithm for solving power loss lessening problem. Nepenthes Algorithm is moulded based on the deeds of Nepenthes plant. Certain plants enthral the prey for reproduction deprived of killing them and quite a few restrain or kill the intruders for protection obstinacies conversely do not digest the physical bodies. Although several plants do engross the nutrients from the numb faunas, hitherto they do not have the competence to kill it. They simply eat the physical bodies found in the topsoil or on the surface of leaf. Every entity is structured rendering to its fitness value in uphill order mode. The highest p Nepenthes plant solutions of the systematized population are measured as the "p Nepenthes plant" plants, NP; however, the left-over solutions (p prey) are the victim (prey). The method of combination is obligatory to simulate the atmosphere of each Nepenthes plant and its victim (prey). In the course of the combination method, the Victim (prey) with the outstanding fitness is allotted to the Rank one Nepenthes plant. In the same way, the consequent preys are allotted to consecutive Nepenthes plants, consistently. When fascination rate is mediocre to the produced capricious value, the prey is successful to spurt from the ploy and Nepenthes plant withstands to propagate. Authenticity of the Ephemeral Search Algorithm, Improved Ephemeral Search Algorithm and Nepenthes Algorithm are substantiated in IEEE 30 bus system. Actual power loss lessening is reached. Proportion of actual power loss lessening is augmented
Dynamic Modeling of Flexible Manipulators without their Mass Matrices Inversion
Authors: Gevorkian H.A.
Published: April 2022

In recent scientific literature, much attention is paid to the optimal modeling of elastic dynamical systems. The relevance of these studies is dictated by the ever-increasing demand in the control theory of high-precision robotic manipulators and automatic mechanisms, which consists in the need for continuous adjustment of the movement of their executive bodies in real time, with account for the flexibility of the constituent links of these systems. The generalized Newton --- Euler method formulated in this regard served as a reliable platform for a subsequent progressive modification of dynamic analysis for a wide class of elastodynamic systems. The purpose of the study is to improve the existing computational algorithms to accelerate the computational process of dynamic analysis of flexible manipulators. In this regard, relying on symbolic-iterative calculus, we formulated and solved the mixed dynamic problem of the manipulators without inverting their mass matrices. Furthermore, we modified the Newton --- Raphson method, intended for a numerical integration of the Newton --- Euler equations of motion. Finally, we dynamically calculated the spatial five-elastic link manipulator by comparing the speed of computational processes carried out at constant accuracy of the problem modeling, and assessed the efficiency of the method of dynamic analysis of the manipulators. In this study, we introduce an advanced method of dynamic modeling of flexible manipulators without the well-known procedure of their mass matrices inversion
Clinical effects of adaptive lung ventilation regime during weaning of mixed ICU patients
Authors: Glavatskih R. A. , Davidova N. S. , Leyderman I. N. , Sobetova G. V.
Published: April 2022

Background. Weaning from mechanical ventilation (MV) became one of the main problems of intensive care unit (ICU) physicians. Choosing the optimal mode of MV, which make possible to accelerate the process of weaning the patient, remain unresolved. A promising direction is the use of new adaptive ventilation modes.

Objective. To compare the clinical efficacy of the iSV regimen with the traditional CPAP + PS (PSV) regimen in patients of a mixed ICU.

Design and methods. 45 patients (age 31–81) were examined. Patients were on prolonged MV from 5 to 28 days. In group 1 pressure support (PSV) mode was used to adapt to spontaneous breathing. Group 2 consisted of patients in whom adaptive ventilation (iSV) mode was used.

Results. Both modes of assisted ventilation provided effective respiratory support. In the PSV mode, on the 3rd and 5th days of weaning from MV, hypocapnia and a higher support by the pressure of spontaneous inspirations (PS) were noted. A higher daily energy requirement was revealed in PSV mode on day 3. The length of stay in ICU in iSV group was moderately decreased.

Conclusion. Assisted ventilation modes PSV and iSV are effective in adapting patients to spontaneous breathing after prolonged MV. The iSV mode appears to cause less respiratory stress compared to the PSV mode. Assisted ventilation in iSV versus PSV can possibly reduce ICU length of stay.
Primary lymphomas of the central nervous system. Questions of epidemiology and treatment. Clinical example of multidisciplinary approach in therapy
Authors: Voinov N. E. , Ulitin A. U. , Chitanava T. V. , Sklyar S. S. , Petrov A. V.
Published: April 2022

Background. Currently, the frequency of occurrence of neoplasms is emerging in the world. Under conditions of a general tumor, brain tumors are rare (0.7–1.5 %). However, high mortality, disability, limited life expectancy of patients, high economic and social inferiority, raise concerns about the medical organization of care, development and social adaptation. Of particular importance among the causes of primary brain tumors is the congenital or acquired growth of immunodeficiency. The growth in the number of drug addicts led to the elimination of the annual epidemic at the end of the 70s and the increase in the number of patients with immunodeficiency syndrome (AIDS), due to which the growth of a brain tumor began to develop in this population group. The number of Russian patients with lymphoma is also steadily increasing.

Objective. Consider an illustrative clinical case that reflects the expected continuity in patients with ordinary CNS lymphoma.

Design and methods. A 50-year-old patient with moderate memory loss was examined using various methods: MRI, PET-CT and etc.

Results. Based on histological and immunohistochemical studies, diffuse large B-cell lymphoma of the CNS was diagnosed. There was a positive trend in the reduction of tumor size after radiation therapy.

Conclusion. Primary CNS lymphoma is becoming an active epidemiological problem of society, requiring comprehensive multidisciplinary monitoring. Only high vigilance in terms of lymphoma and well-coordinated work of multidisciplinary specialists can help to perform the correct diagnostics and patient management.
Adamantinomatous craniopharyngioma of cerebellopontine angle in association with Gardner’s syndrome
Authors: Safarov B. I. , Melchenko S. A. , Ulitin A. Yu. , Sklyar S. S. , Zabrodskaya J. M. , Voinov N. E.
Published: April 2022

Background. Craniopharyngiomas are benign epithelial tumors. According to embryogenetic theory, these neoplasms develop from the remains of the cells of Rathke’s pouch, which connects the cavities of the primary oral tube with the pituitary gland in the embryonic period. The metaplastic theory assumes the occurrence of craniopharyngiomas as a result of metaplasia of epithelial cells in the chiasmal-sellar region.

Objective. To present a clinical case of ectopic adamantium-like craniopharyngioma of the right cerebellopontine angle associated with Gardner’s syndrome.

Design and methods. The analysis of SCT, MRI, histological, histochemical and other special studies, as well as data from four other similar observations published in the literature, was carried out.

Results. We describe a case of a rare case of ectopic adamantium-like craniopharyngioma of the right cerebellopontine angle associated with Gardner’s syndrome (familial adenomatous polyposis, multiple skull osteomas and soft tissue tumors) diagnosed in a 27-year-old patient. It is noted, while inexplicable, the correlation of craniopharyngiomas in patients with Gardner’s syndrome in the region of the cerebellopontine angle.

Conclusions. In the case of patients with adamantine-like craniopharyngiomas, the including of collection of a family history and special studies to exclude adenomatous intestinal polyposis and Gardner syndrome in the complex of treatment and diagnostics id highly recommended.
Academic Staff Cultural Intelligence and Job Performance in Nigerian Universities
Authors: Peter Akpan Anietie , Brendan Inyang Augustine
Published: April 2022

This study is focused on the effect of cultural intelligence (CQ) on job performance of academic staff in tertiary institutions in Nigeria. Cultural intelligence dimensions studied were metacognitive, cognitive, motivational, and behavioral dimensions. Data were collected from a convenient sample size of 837 academic staff of four public universities in the Niger Delta Region of Nigeria using an adapted questionnaire that was earlier developed and applied by different scholars. Descriptive and inferential statistics provided the basis for the analysis. This result agrees with earlier studies and reinforces that cultural intelligence significantly affects job performance.
The Impact of Working Capital and Production Costs on Consumer Behavior and Sales Turnover at LQ45 Manufacturing Companies in 2015-2020
Authors: Wida Nurhetty Sasriani , Sinuraya Candra
Published: April 2022

This study aims to analyze the impact of working capital and production costs on consumer behavior, as well as the impact of working capital and production costs toward sales turnover in the Covid-19 era in LQ45 manufacturing companies on the IDX in 2015-2020. This research is quantitative research with hypothesis testing. The population in this study are all companies members of LQ45 in 2015-2020. The research uses a non-probability sampling technique with the purposive sampling method. Based on the results of hypothesis testing with simple linear regression, for Hypothesis 1, it was found that there is no effect of working capital on consumer behavior. The result found hypothesis 2, there is an effect of working capital on sales turnover. Result for hypothesis 3 found that, there is no effect of production costs on consumer behavior and for the hypothesis 4, there is an effect of production costs on sales turnover. It result of the study suggested that the impact of working capital on sales turnover can be an indicator that the company is implementing more effective production and marketing development. Meanwhile, the impact of production costs on sales turnover means that an increase in production costs indicates the company is investing in products with more excellent quality.
The Impact of Quality Service on Customer Satisfaction in the Banking Sector amidst Covid-19 Pandemic: A Literature Review for the State of Current Knowledge
Authors: Pangeiko Nautwima Johanna , Romeo Asa Asa
Published: April 2022

The relationship between quality service and customer satisfaction has gained remarkable recognition since the 1980s. To date, researchers are still determined to find out how quality service in terms of tangibility, reliability, responsiveness, assurance, and empathy, impact customer satisfaction. This study provides a review of the literature on the influence of service quality on customer satisfaction in the banking sector amidst the COVID-19 pandemic to determine the existing research gap. Evidence from the literature review shows mixed results where some of the dimensions of quality service positively influence customer satisfaction while others impact it negatively. However, while evidence from the African context reveals positive relationships between the variables, the phenomenon remains inadequately researched, mainly in the Namibian context. Furthermore, empirical evidence covered under this study has examined the matter from the quantitative perspective, leaving no evidence from a qualitative standpoint. Thus, a call for further investigation to delve deeper into the issue to constrict the gap. In so doing, the study developed a conceptual framework that future studies can employ. The conceptual framework consolidates the moderation role of the COVID-19 pandemic to the relationship between quality service and customer satisfaction based on the amendments made to the services which come with variations in customer satisfaction.
Elaboración de bloques de concreto adicionado con nanoplaquetas de beterraga azucarera para prevenir las patologías en unidades de concreto tradicional usadas en edificaciones cercanas al mar
Authors:   , Olarte Breña Karen Gabriela , Sánchez Riveros María de los Ángeles
Published: April 2022

Las manifestaciones patológicas de mayor importancia en los bloques de concreto de la albañilería armada son las eflorescencias y las fisuras; las primeras son estéticas y las segundas son estructurales. Estas patologías se originan por la porosidad del bloque; la cual facilita el ingreso de las sales procedentes de la brisa marina y niebla salina presentes en la atmósfera marina. Estas sales, por efecto del viento son arrastradas y depositadas en las viviendas construidas fuera del mar. Una solución a este problema es utilizar un material que minimice el avance de las fisuras y grietas, como son las nanoplaquetas de beterraga azucarera (NPB); las cuales son residuos vegetales procedentes de la industria alimentaria. En la presente investigación se aborda el estudio de los bloques de concreto fisurados, estudiándose para ello algunas propiedades mecánicas, físicas y químicas; los resultados muestran que con la adición de NPB la resistencia a la compresión y flexión aumentan, y la absorción y carbonatación disminuyen cuando se comparan con el concreto sin nanoaditivo.
Impacto de la adopción por primera vez de NIIF para PYMES en la elaboración de Estados Financieros en Colegios del distrito de Los Olivos en el 2018
Authors:   , Galarza Rodríguez Gian Marco , Ruiz Tovar Frecia Pamela
Published: April 2022

El presente trabajo fue realizado con la finalidad de conocer cuál es el impacto que genera la adopción por primera vez de NIIF para PYMES en la elaboración de los Estados Financieros de los colegios de Los Olivos en el 2018. Este tema nos genera interés, debido a la gran importancia y poca investigación nacional de la aplicación de NIIF para PYMES en el Sector Educativo a nivel escolar y la gran cantidad de pequeñas y medianas empresas en el país. Para esta tesis se han tomado en cuenta las Normas Internacionales de Información Financiera para las Pequeñas y Medianas Empresas y las principales ratios financieros para realizar análisis financiero y toma de decisiones acertadas. La metodología utilizada es el diseño no experimental de corte transversal, ya que busca evaluar la vinculación causal entre las dos variables en un momento determinado. La presente tesis se desarrollará en cinco capítulos. En el primer capítulo, se describirán tanto investigaciones locales como investigaciones internacionales. En el segundo capítulo, se plantean los problemas, las hipótesis a ser validadas y los objetivos propuestos. En el tercer capítulo, se procederá a describir la metodología a utilizar, la cual es de enfoque mixto. En el cuarto capítulo, se presentan los resultados del análisis cualitativo y cuantitativo y se presenta un caso práctico en el que se puede apreciar la aplicación por primera vez de la NIIF para PYMES y su incidencia en los Estados Financieros. En el quinto capítulo se presentan conclusiones y recomendaciones.
Measurement Invariance Testing of Career Anxiety Scale by Gender and Grade Level
Authors: NALBANTOĞLU YILMAZ Funda , ÇETİN GÜNDÜZ Hicran
Published: April 2022

This study aimed to examine measurement invariance of the Career Anxiety Scale developed by Çetin-Gündüz and Nalbantoğlu-Yılmaz (2016). For this purpose, multigroup confirmatory factor analysis was performed to test measurement invariance by gender and grade level. The study group consisted of 415 students studying in the 11th and 12th grades in Nevşehir city center. Within the framework of the study model, configural, metric, scalar, and strict invariance were examined using fit coefficients. The analysis results proved the measurement invariance of the Career Anxiety Scale for both genders. It was also observed that configural, metric, scalar, and strict invariance were established for the 11th and 12th-grade students.
Evaluation of Social Clubs Studies in Turkey with Club Counselors' Views
Authors: YÜCEER Deniz , COŞKUN KESKİN Sevgi , AYDOĞMUŞ DOĞAN Ayşe
Published: April 2022

The aim of this study was to capture the teachers' views on the functioning of social clubs, to reveal the teachers' perceptions of the weaknesses and strengths of the implementation of these activities and also to suggest the proposal for the efficiency of social club studies. The study was conducted as a phenomenological approach. The participants of the research included 33 teachers who work in secondary schools in Sakarya, Bursa, İzmit, İstanbul, Ankara, and Kütahya and advice on social clubs. The data were collected and analyzed with interview questions consisting of 18 questions. As a result of the analysis, it was found that teachers generally choose the clubs themselves, 2/3 of the teachers make a plan for study but do not implement those plans, about 2/3 of them could not conduct club activities in sufficient number and quality. Teachers, on the other hand, believe that social clubs help students in cognitive, affective, social, societal, individual development, self-knowledge, psychomotor, and other areas