bluuebunny/crossref_metadata_2025 huggingface dataset:
A Transcranial Magnetic Stimulation Trigger System for Suppressing Motor-Evoked Potential Fluctuation Using Electroencephalogram Coherence Analysis: Algorithm Development and Validation Study
Authors: Sasaki Keisuke , Fujishige Yuki , Kikuchi Yutaka , Odagaki Masato
Published: April 2021

Background

Transcranial magnetic stimulation (TMS), when applied over the primary motor cortex, elicits a motor-evoked potential (MEP) in electromyograms measured from peripheral muscles. MEP amplitude has often been observed to fluctuate trial to trial, even with a constant stimulus. Many factors cause MEP fluctuations in TMS. One of the primary factors is the weak stationarity and instability of cortical activity in the brain, from which we assumed MEP fluctuations originate. We hypothesized that MEP fluctuations are suppressed when TMS is delivered to the primary motor cortex at a time when several electroencephalogram (EEG) channels measured on the scalp are highly similar in the frequency domain.

Objective

We developed a TMS triggering system to suppress MEP fluctuations using EEG coherence analysis, which was performed to detect the EEG signal similarity between the 2 channels in the frequency domain.

Methods

Seven healthy adults participated in the experiment to confirm whether the TMS trigger system works adequately, and the mean amplitude and coefficient of the MEP variation were recorded and compared with the values obtained during the control task. We also determined the experimental time under each condition and verified whether it was within the predicted time.

Results

The coefficient of variation of MEP amplitude decreased in 5 of the 7 participants, and significant differences (P=.02) were confirmed in 2 of the participants according to an F test. The coefficient of variation of the experimental time required for each stimulus after threshold modification was less than that without threshold modification, and a significant difference (P<.001) was confirmed by performing an F test.

Conclusions

We found that MEP could be suppressed using the system developed in this study and that the TMS trigger system could also stabilize the experimental time by changing the triggering threshold automatically.
Yönetim Bilişim Sistemleri Literatüründe Çok Kriterli Karar Verme Teknikleri: Sistematik bir İnceleme
Authors: CEBECİ Halil İbrahim
Published: April 2021

Amaç: Yönetim bilişim sistemleri literatüründe çok kriterli problemlerin çözümünde kullanılan yöntemleri ve bunların uygulama alanlarını ve trendlerini belirleyerek bu alanda çalışacak akademisyenlere yol gösterici bir değerlendirme sunmak

Yöntem: YBS alanında yayın yapan 107 adet SCOPUS indeksli derginin çok kriterli karar verme yayınlarının sistematik olarak toplanması, incelenmesi, kodlanması ve filtrelenmesi ile veri seti elde edilecek ve bu veri seti üzerinde çeşitli analitik yaklaşımlar ile (Bibliyometrik, trend analizi, metin madenciliği, kümeleme) kapsam, dergi ve kavram odaklı değerlendirmeler yapılması

Bulgular: Yönetim bilişim sistemleri literatüründe 3 farklı alanda (bilişim ile alakalı, diğer alanlar ve yöntem geliştirme) çok sayıda yayın yapılmaktadır. Bilişim ile direkt alakalı olan problemlerin çözümünün literatürde daha fazla değer gördüğü görülmektedir. Ayrıca müşteri odaklı konu alanlarının (web site tasarımı, hizmet kalitesi, karar destek sistemleri ve yazılım seçimi) literatürde daha ön planda olduğu belirlenmiştir. Son yıllarda ise alanın özellikle veri madenciliği ve büyük veri gibi alanlara doğru bir yönelim gösterdiği düşünülmektedir.

Sonuç: Sistematik inceleme sonucunda elde edilen sonuçların hem alanda çalışacak akademisyenlere yol gösterici olması, hem de akademik dergi yöneticileri için konu belirleme konusunda fayda sağlaması düşünülmektedir. YBS literatürünün hem bilişim ile ilgili hem de diğer alanlardaki ÇKKV yayınlarına açık olduğu görülmekle birlikte müşteri odaklı ve modern bilişim konularına doğru bir kayış söz konusudur.
Effect of Apabetalone on Cardiovascular Events in Diabetes, CKD, and Recent Acute Coronary Syndrome
Authors: Kalantar-Zadeh Kamyar , Schwartz Gregory G. , Nicholls Stephen J. , Buhr Kevin A. , Ginsberg Henry N. , Johansson Jan O. , Kulikowski Ewelina , Lebioda Kenneth , Toth Peter P. , Wong Norman , Sweeney Michael , Ray Kausik K. ,   on behalf of the BETonMACE Investigators
Published: April 2021

Background and objectives

CKD and type 2 diabetes mellitus interact to increase the risk of major adverse cardiovascular events (i.e., cardiovascular death, nonfatal myocardial infarction, or stroke) and congestive heart failure. A maladaptive epigenetic response may be a cardiovascular risk driver and amenable to modification with apabetalone, a selective modulator of the bromodomain and extraterminal domain transcription system. We examined this question in a prespecified analysis of BETonMACE, a phase 3 trial.

Design, setting, participants, & measurements

BETonMACE was an event-driven, randomized, double-blind, placebo-controlled trial comparing effects of apabetalone versus placebo on major adverse cardiovascular events and heart failure hospitalizations in 2425 participants with type 2 diabetes and a recent acute coronary syndrome, including 288 participants with CKD with eGFR <60 ml/min per 1.73 m2 at baseline. The primary end point in BETonMACE was the time to the first major adverse cardiovascular event, with a secondary end point of time to hospitalization for heart failure.

Results

Median follow-up was 27 months (interquartile range, 20–32 months). In participants with CKD, apabetalone compared with placebo was associated with fewer major adverse cardiovascular events (13 events in 124 patients [11%] versus 35 events in 164 patients [21%]; hazard ratio, 0.50; 95% confidence interval, 0.26 to 0.96) and fewer heart failure–related hospitalizations (three hospitalizations in 124 patients [3%] versus 14 hospitalizations in 164 patients [9%]; hazard ratio, 0.48; 95% confidence interval, 0.26 to 0.86). In the non-CKD group, the corresponding hazard ratio values were 0.96 (95% confidence interval, 0.74 to 1.24) for major adverse cardiovascular events, and 0.76 (95% confidence interval, 0.46 to 1.27) for heart failure–related hospitalization. Interaction of CKD on treatment effect was P=0.03 for major adverse cardiovascular events, and P=0.12 for heart failure–related hospitalization. Participants with CKD showed similar numbers of adverse events, regardless of randomization to apabetalone or placebo (119 [73%] versus 88 [71%] patients), and there were fewer serious adverse events (29% versus 43%; P=0.02) in the apabetalone group.

Conclusions

Apabetalone may reduce the incidence of major adverse cardiovascular events in patients with CKD and type 2 diabetes who have a high burden of cardiovascular disease.
The mediation role of change management in employee development
Authors: Jamal Ali Bayad , Anwar Govand
Published: April 2021

In an increasing number of hotels, hospitality is being used to improve productivity and care quality. The research was conducted in the hospitality industry, specifically in private hotels in Sulaimaniah. The study looked at the perspective of change management in the hospitality industry, specifically in private hotels. However, due to an implementation difference: the gap between plan and execution, the hospitality industry has difficulty implementing reform initiatives. The aim of this paper, from a change management standpoint, is to increase scientific knowledge about factors that reduce the implementation gap and facilitate the transition from "toolbox lean" to real lean hospitality transformation. To find a change management perspective in the hospitality industry, the researchers used a quantitative analysis approach. A total of 90 administrative staff members from private hotels were given the questionnaire at random. The participants in this study were 76 people from various private hotels in Iraq's Kurdistan province. The researchers used multiple regression analysis to assess their established research hypotheses, while the Sobel test was used to determine the function of the mediator, which is the change management initiative. The results showed that all research hypotheses are supported, with the third research hypothesis receiving the highest value, stating that change event mediates education and strategic success, and the first research hypothesis receiving the lowest value, stating that change event mediates technology change and strategic success. Furthermore, it was discovered that change eventplay a constructive and significant role in bridging the gap between change management and strategic performance.
Sequence spaces defined via Euler method and matrix transformations
Authors: Sharma Pranav
Published: April 2021

A blend of matrix summability and Euler summability transformation methods is used to define Lacunary sequence spaces defined over n-normed space. Then we present the properties of this space and finally, some inclusion relations are presented.
Rethinking science communication: reflections on what happens when science meets comic art
Authors: Jonsson Anna , Grafström Maria
Published: April 2021

In this essay, we explore what happens when science meets comic art and how such meeting offers an opportunity to rethink science communication. We base our discussion on our own experience, as research scholars, of engaging in a collaboration with a comic artist. Three key reflections are developed: how comic art may help to (1) conceptualize ideas in an early research phase, (2) clarify the main argument by making the (un)written word visible; and (3) communicate science with an open end. These aspects contribute to an increased understanding of science communication in both research and society.
G. Roerich’s contribution to history of Russian expeditions in Central Asia
Authors: Shustova Alla Mihaylovna
Published: April 2021

The study of G. Roerichs scientific heritage is at its beginning. An important basis of Roerichs many-sided scientific activities were his investigations during the expeditions in Asia. The longest, most dangerous and laborious among them was the Central Asiatic expedition of his father - N.K. Roerich. The goal of this article is to examine G.N. Roerichs activities on every stage of the Central Asiatic expedition, as well as G.N. Roerichs works, publishing the results of the expedition research. G.N. Roerich presented the basic results in his monograph Trails to Inmost Asia: Five years of exploration with the Roerich Central Asian Expedition published in English in USA in 1931. Roerichs description of North and Central Tibet is unique because the theocratic state in Tibet and nomad tribes, which Roerich had observed, are no more existing. Roerichs field investigations continued the historical tradition of Russian expeditions in Central Asia. It extended our scientific knowledge about the insufficiently known regions in Asia.
First Record of Trachipterus trachypterus (Gmelin, 1789) in the Gulf of Antalya (Turkey)
Authors: Gökoğlu Mehmet , Özen Mehmet Rüştü
Published: April 2021

During the research in the grand port area of Antalya (coordinates: 36. 829022N; 30. 603739 E), it was observed that a very rare fish belonging to the Trachipteridae family was stranded in the Mediterranean Sea. The length of the fish, which weighs 400 g (TW = 400g), has been measured as 85cm (TL = 85cm). The fish without anal fin has a dorsal fin with red colour and soft rays, extending from the dorsal to the caudal region. In the examination made; it has been understood that this fish is Ribbon fish, Trachipterus trachypterus (Gmelin, 1789) which are rare fish in the Mediterranean Sea. In a review of previous studies, it was previously understood that this species was not given in the Gulf of Antalya. In the study, the Ribbon fish, Trachipterus trachypterus (Gmelin, 1789), is presented as a new record in the Gulf of Antalya (Turkey).
PENGARUH KOMPETENSI KERJA DAN KEPEMIMPINAN TRANSFORMASIONAL TERHADAP KEPUASAN KERJA PEGAWAI PADA PROGRAM STUDI DI LINGKUNGAN POLITEKNIK KESEHATAN TANJUNGKARANG
Authors: GUNARSO SRI INDRA TRI
Published: April 2021

The purpose of this research to knows and analyzes the influence of work competency and transformational leadership toward work satisfaction and its implication on worker performance of study program in Politeknik Kesehatan Tanjungkarang, Lampung Province. Population in this research is 297 people or all worker, whereas the sample is a number of 260 workers suitable with SEM requirement. The tool of data collection uses questioner instrument whereas the tool of data analyzing uses statistics, i.e. structural equation modeling (SEM). Based on SEM analyzing by using Lisrel 8.70, it is known that work competency variable and transformational leadership give influence toward work satisfaction of study program in Politeknik Kesehatan Tanjungkarang environment. The result describes that is very determined by work satisfaction which improve and work satisfaction is influenced by transformational leadership which applies on Study program in Politeknik Kesehatan Tanjungkarang environment.
Ethical Leadership Anomaly On Organizational Commitment In The Indonesian FDA
Authors: Alkatya Dwi Rini , Soelton Mochamad , Puspaningrum Astrid , Hokroh Mohammed , Arief Harefan
Published: April 2021

This study aims to determine the influence of Ethical Leadership on Job Satisfaction, Ethical Climate and Organizational Commitment at staff at the Drug Registration Directorate of the Indonesian Food and Drug Authority (Indonesian FDA). Data collection techniques are done by distributing questionnaires using ordinal scales. This research was conducted on 70 respondents by using quantitative descriptive approach and hypothesis testing. The collected data is then analyzed using the technique analysis Structural Equation Modeling (SEM) through SmartPLS (Partial Least Square) software. The results of this study show that Ethical Leadership positively and significantly influence on Ethical Climate, Job Satisfaction and Organizational Commitment at the Drug Registration Directorate of the Indonesian Food and Drug Authority (Indonesian FDA).
Corporate social responsibility and firm performance: Modified social contribution value per share
Authors: So Simon Man Shing
Published: April 2021

This study attempts to enhance the corporate social responsibility (CSR) performance measurement by introducing the concept of environmental contributions. As suggested by Xu and Zhu (2010), we modify the formula of social contribution value per share (SCVPS) developed by the Shanghai Stock Exchange (SSE) in 2008 by employing two environmental elements, namely, the audited environmental cost (AEC) and additional audited environmental cost (AddAEC). Using pooled least square regressions to examine the relationship between the two modified SCVPSs, under the accrual basis and the cash basis, and the performance of the listed firms in the SSE social responsibility index, we find that they have a positive relationship — a larger modified SCVPS corresponds to better CSR performance and firm performance. Our results for the two modified SCVPSs are relatively unaffected by the different ownership structures, state-owned (SO) and non-state-owned (NSO). Evidence also indicates that the influence on firm performance of the modified SCVPS under the accrual basis is more significant for SO firms than NSO firms. Companies are encouraged to increase their environmental contribution and SCVPS to go beyond the minimum environmental protection standards.
The limit problem of the Patlak-Keller-Segel-Stokes system in scalling critical space
Authors: Yang Minghua , Han Yanchang
Published: April 2021

In this paper, we consider a singular limit problem of Cauchy problem
for Patlak-Keller-Segel equation coupled with Stokes equation in
scalling critical space. Precisely, by taking advantage of a coupling
structure of equations and using a scale decomposition technique, it is
shown that when the relaxation time parameter ε →∞, a solution of
Patlak-Keller-Segel system coupled with nonstationary Stokes equation
converges to that of Patlak-Keller-Segel system coupled with stationary
Stokes equation in the critical Fourier-Besov space under certain
conditions.
A 10 Year Retrospective Observational Study on The Utility and Prescription Standards of Dexamethasone in Pediatric Neuro-oncosurgery in a Tertiary Care Centre.
Authors: Ayudhaya Anutra Chumbala Na , Morrison Scott , Kaliaperumal Chadrakaseran , Gallo Pasquale
Published: April 2021

Object: This study aimed to retrospectively assess dexamethasone utility
in pediatric CNS tumor patients over a 10-year period, to better
understand dosing variability, and highlight optimal practice. Methods:
All pediatric CNS tumor cases managed operatively for a ten year period
at a single center were reviewed. Information was gathered on
demographics, dexamethasone doses, course durations, weaning regimes,
PPI co-prescription, adverse events, and route of administration.
Comparison within these groups was analyzed through use of statistical
testing. Results: 127 patients received 193 dexamethasone courses.
Median age was 7 years, with a median weight of 27.9kg. Most common
tumor type was astrocytoma (24.8%). Median daily dose was 8mg, with
twice daily dosing most common. Median course duration was 8 days,.
Median weaning duration was 11.5 days. Daily dose was not correlated
with patient weight and the median daily dose per kg was 0.2319mg/kg.
Dexamethasone dose per kg was significantly inversely correlated with
age. 44.9% of patients received intravenous dexamethasone only. 32.7%
received oral dexamethasone only. 22.4% received multiple different
routes of administration throughout their course. Intravenous
dexamethasone was more commonly used in young age groups. Incidence of
adverse effects was 14.5% with Cushing’s syndrome most common.
Dexamethasone dose per kg was not significantly different between
patients with and without adverse effects; however, average
dexamethasone course duration was significantly different between these
groups. No relationship was noted between adverse effects incidence and
administration route. 64.2% of patients received concurrent PPI with
35.8% receiving no PPI. Conclusions: Large variation was seen in
practice, with prescriptions appearing based on clinician preference and
symptom severity rather than patient age or weight. Dexamethasone
administration route interestingly showed no relationship with incidence
of adverse effects. Future guidelines should consider lower dose
regimens with less frequent dosing as these may benefit quality of life.
Prospective evaluation of the correlation between Prostate Imaging –Reporting and Data System (PI-RADS) version 2.1 and International Society of Urological Pathology (ISUP) score, and inter-observer Reproducibility of the New Version
Authors: OĞUZDOĞAN GÜLŞEN YÜCEL , Adıbelli Zehra Hilal , Sefik Ertugrul , Mollamehmetoğlu Hulya , Bozkurt Ibrahim Halil , Vardar Enver , GUNLUSOY Bulent , Tuncez Hulya Cetin
Published: April 2021

Purpose: To evaluate the correlation between PI-RADSv2.1 and
International Society of Urologic Pathologists (ISUP) score for patients
who underwent multiparametric-MRI(MpMRI) prior to transrectal ultrasound
(TRUS) guided cognitive fusion biopsy (CF-Bx). And to investigate
inter-observer agreement of PI-RADSv2.1. Methods: Patients who underwent
MpMRI of prostate prior to first TRUS-guided CF-Bx, were included in
this prospective study. MpMRI examinations were evaluated by two
radiologists before biopsy according to the PI-RADSv2.1. Interobserver
agreement was recorded and the final PI-RADS categorization was
performed by consensus. Correlation of histopathological results with
PI-RADSv2.1 score was evaluated. Lesions with Gleason Score(GS)≥6 were
considered as prostate cancer (PCa). Results: A total of 84 patients
with 106 lesions were included in the study. The ratio of PCa in the
PI-RADS groups 1,2,3,4,5 was 0%, 0%, 22.2%, 56%, 94.45%,
respectively. There was a positive correlation with a value of 0.814
between the PI-RADSv2.1 and the ISUP score. When PI-RADS≥3 is accepted
as the cut-off value in peripheral zone(PZ) and the whole gland, the NPV
for malignancy was 100.00%. For PI-RADS ≥4, it was 76.47% for PZ, and
80.65% for the whole gland. For the whole gland; sensitivity,
specificity, and PPV of the PI-RADS≥3 were 100%, 12.9%, and 44.33%,
respectively; for PI-RADS≥4, these values were 72.09%, 80.65%, and
72.09% respectively. Without applying cut-off values, the interobserver
agreement for PI-RADS score was κappa:0.562. Conclusions: PI-RADSv2.1
was created in the framework of v2 to facilitate to evaluate MpMRI and
to increase interobserver agreement. We believe that further studies
will be necessary.
A singularly perturbed vector-bias malaria model incorporating bed-net control
Authors: Salman Sanaa
Published: April 2021

A malaria transmission disease model with host selectivity and
Insecticide treated bed nets (ITNs), as an intervention for controlling
the disease, is formulated. Since the vector is an insect, the vector
time scale is much more expeditious than the host time scale. This leads
to a singularly perturbed model with two distinctive intrinsic time
scales, two-slow for the host and one-fast for the vector. The basic
reproduction number R0 is calculated and the local stability analysis is
performed at equilibria of the model when the perturbation parameter ɛ
> 0. The model is analyzed when ɛ → 0 using asymptotic
expansions technique. Merging bed-net control, vector-bias, and singular
perturbation have a notable effect on the model dynamics. It is shown
that if over %30 of humans use ITNs, malaria disease burden can be
reduced. The dynamics on the slow surface indicate that the infected
vectors decays very fast when ɛ = 0.001 according to the numerical
simulations.
Public perception of climate change and its impact on natural disasters
Authors: Cvetkovic Vladimir , Grbic Lazar
Published: April 2021

The aim of the research is the examination of the factors influencing the
public perception of climate change and its impact on natural disasters.
This paper presents the results of quantitative research regarding testing
the central hypothesis where education is the predicting variable of public
perception of climate change and its impact on natural disasters. A
multivariate regression analysis was used, identifying the extent of the
total scores of the main dependent variables (perception of vulnerability to
climate change, perception of the climate change impact on natural
disasters, knowledge and fear scores) were associated with five demographic
and socio?economic variables: gender, age, marital status, education level,
and employment status. A series of 208 face?to?face interviews were
conducted during the beginning of 2020 on the central squares in the
selected cities in Serbia, Belgrade (76.92%) and Sremska Mitrovica (23.08%).
The results showed that education level was the most effective predictor of
the mentioned research variables. Besides, employment status has been found
to affect perceptions of vulnerability, while age affects the perceptions of
climate change. Based on the obtained results, policies and strategies to
improve people's awareness of climate change must take into account a
comprehensive understanding of behavioral dispositions.
Conflict and conservation
Authors:   IUCN, International Union for Conservation of Nature
Published: April 2021

Conflict and conservation focuses on armed conflict and nature. The theme is highly timely as armed conflicts cause great economic and social harm, as well as environmental damage around the world. Conflicts have stretched societies to their limits in terms of financial and human resources. Lives and property have been lost and disrupted, livelihoods destroyed, and people displaced. Regrettably, policies to better manage and moderate pressures that drive armed conflicts have been unable to prevent their number from reaching what is now their highest level for 30 years. IUCN therefore explores the complex relationships between nature and conflict to inform policies to better advance both peacebuilding and conservation. This is the first report in the IUCN flagship report series Nature in a Globalised World. The purpose of this series is to help bring the importance of nature conservation into mainstream political and economic decision-making.
Conversion of α-Cells to β-Cells in the Postpartum Mouse Pancreas Involves Lgr5 Progeny
Authors: Rodriguez Uylissa A. , Socorro Mairobys , Criscimanna Angela , Martins Christina P. , Mohamed Nada , Hu Jing , Prasadan Krishna , Gittes George K. , Esni Farzad
Published: April 2021

In contrast to the skin and the gut, where somatic stem cells and their niche are well characterized, a definitive pancreatic multipotent cell population in the adult pancreas has yet to be revealed. Of particular interest is whether such cells may be endogenous in patients with diabetes, and if so, can they be used for therapeutic purposes? In the current study, we used two separate reporter lines to target Cre-recombinase expression to the Lgr5- or glucagon-expressing cells in the pancreas. We provide evidence for the existence of a population of cells within and in the proximity of the ducts that transiently express the stem-cell marker Lgr5 during late gestational stages. Careful timing of tamoxifen treatment in Lgr5EGFP-IRES-CreERT2;R26Tomato mice allowed us to show that these Lgr5-expressing progenitor cells can differentiate into α-cells during pregnancy. Furthermore, we report on a spontaneous lineage conversion of α- to β-cells specifically after parturition. The contribution of Lgr5 progeny to the β-cell compartment through an α-cell intermediate phase early after pregnancy appears to be part of a novel mechanism that would counterbalance against excessive β-cell mass reduction during β-cell involution.
MEK/ERK Signaling in β Cells Bifunctionally Regulates β-cell Mass and Glucose-stimulated Insulin-secretion Response to Maintain Glucose Homeostasis
Authors: Ikushima Yoshiko Matsumoto , Awazawa Motoharu , Kobayashi Naoki , Osonoi Sho , Takemiya Seiichi , Kobayashi Hiroshi , Suwanai Hirotsugu , Morimoto Yuichi , Soeda Kotaro , Adachi Jun , Muratani Masafumi , Charron Jean , Mizukami Hiroki , Takahashi Noriko , Ueki Kohjiro
Published: April 2021

In diabetic pathology, insufficiency in β-cell mass
unable to meet peripheral insulin demand and functional defects of individual β
cells to produce insulin are often concurrently observed, collectively causing hyperglycemia.
Here we show that the phosphorylation of ERK1/2 is significantly decreased in
the islets of db/db mice as well as
in those of a cohort of subjects with type 2 diabetes. In mice with abrogation
of ERK signaling in pancreatic β cells through deletion of Mek1 and Mek2, glucose
intolerance aggravates under high-fat diet-fed conditions due to insufficient
insulin production with lower β-cell proliferation and reduced β-cell mass,
while in individual β cells dampening of the number of insulin exocytosis
events is observed, with the molecules involved in insulin exocytosis being less
phosphorylated. These data reveal bifunctional roles for MEK/ERK signaling in β
cells for glucose homeostasis, i.e., in regulating β-cell mass as well as in
controlling insulin exocytosis in individual β cells, thus providing not only a
novel perspective for the understanding of diabetes pathophysiology but also a potential
clue for new drug development for diabetes treatment.
Fractal parameters developed to evaluate the effects of laser textured surface on oil contact angle and tribological parameters
Authors: Chang Chang-Shuo , Mahmood Muhammad Arif , Tsai Tsung-Wen , Han Chang-Fu , Chung Chen-Kuei , Lin Jen-Fin
Published: April 2021

Steel specimens are textured by controlling laser peak fluence F0 and overlap ratio, OR. A 3D fractal model with the characteristic (periodic) lengths, Lx and Ly, and fractal dimensions, Dx and Dy, is introduced to solve the morphologies with the same skewness Sk and kurtosis Ku as that of the textured specimen. The product value LxLy shows its correlation with Sk and is used as a surface pattern parameter with its value proportional to asperity's plateau area. Areal mean surface roughness Sa and LxLy, superior than the conventionally used Sa, Sk, and Ku, become the controlling factors that are more efficient to interpret their role on contact angle (θ)oil formed at textured surfaces with various patterns. Effects of F0 and OR on (θ)oil are efficiently evaluated through the correlations of texturing conditions of laser power and overlap ratio with Sa and LxLy. Adhesive energy Ea((θ)oil) is introduced to establish its connection with tribological parameters.
TEACHERS’ OPINIONS ON THE CONCEPT OF REPRESENTATION AND PREDICTORS FAVOURABLE TO THE CREATION OF REPRESENTATIONS IN PUPILS
Authors: PAHOME DANIELA
Published: April 2021

International research in the field of education focuses on the approach and use of mental knowledge-related mechanisms. In the educational research in Romania, we see the absence of studies focused on revision, analysis, and summary of the literature on the concept of representation and a shortage of studies tackling issues concerning creation of quality representations in primary school pupils. The aim of the study is to analyse teachers’ opinions on nine different themes of interest in the lexical field of representation, explored throughout three standard interviews. The interviewees are teaching staff, a professor and two pre-university teachers. The data collected are presented in tables and analysed by manual codification. The results are significant in relation to the theoretical substantiation. The main conclusion of the study is: representations constitute a premise for the optimal functioning of the intellect. Some predictors favourable to creation of quality representations in pupils are t he use of previous cognitive experiences, the accessibility and monitoring of learning as well as the quality of educational aids. By using suitable didactic resources, which reproduce the reality in a simplified manner or bring about elaborated abstractions, the teacher facilitates learning.
DEVELOPING A GEO-GAME APPLICATION FOR GLOBAL CONNECTIONS IN SOCIAL STUDIES TEACHING: GEZGİN CASE
Authors: İNEÇ ZEKERİYA FATİH
Published: April 2021

This study investigated the developmental process of a dynamic geo-game, Gezgin, which was developed by the researcher based on the Four-Component Instructional Design (4C/ID) Model, and its benefits in the acquisitions, values and skills of the Global Connections learning area of the social studies curriculum applied in Turkey. It also determined Gezgin’s reflecting acquisitions, values, and skills, as well associal studies education experts’ opinions about Gezgin. A case study approach was adopted and five experts participated. The data collection lasted for approximately fourteen months due to the development process of Gezgin. Most of this process coincided with the COVID-19 pandemic period. The data were descriptively analysed and the experts’ evaluations were subjected to content analysis. Findings indicated that Gezgin mostly reflected the acquisitions, values, and skills of Global Connections learning area and could support the curriculum as a studying environment, create various experiences, materialise theoretical knowledge, and that it co uld be tested on students. It was also understood that values, primarily, and skills and acquisitions, subsequently, were mostly supported. Although the results of the study revealed similarities with the results of other studies in scientific literature, it differed from them as a large platform where the acquisitions, values, and skills of a learning field were reflected. The results indicated that geo-games should be used to support other learning areas, develop high-level skills, and create a level of awareness in accordance with spatial citizenship skills.
A DYNAMIC MAP DESIGN FOR GLOBAL AWARENESS IN SOCIAL STUDIES TEACHING
Authors: İNEÇ ZEKERİYA FATİH
Published: April 2021

In this study, the stages of creating a dynamic map in Microsoft Excel with the rapid prototyping instructional design model developed by Tripp and Bichelmeyer are explained to support and improve students’ global awareness in social studies lessons in Turkey. The dynamic map was created in four general stages in the study , i n w hi c h the waterfall design model was adopted. First, the needs and content analysis of the study were conducted for this aim. In the second stage, an algorithm was created in line with the determinations of the first stage, and, within this framework, the prototype of the dynamic map was designed in Microsoft Excel. In the third s ta ge , the working status of the dynamic map was checked, the design process was completed, and the distortions on the coordinate system were eliminated. In the last stage, the dynamic map was evaluated by three experts, and the final prototype was created based on their feedback. The study was conducted using action research, the reflections of the acquisitions in the dynamic map are evaluated descriptively, and the opinions about the dynamic map are evaluated with content analysis. According to the obtained results, the dynamic map can reflect the acquisitions, concretize the content, and increase students’ map literacy levels, but it also requires teacher support. In addition, the map also supports the competencies in teaching programs with mathematics and learning skills. Suggestions based on these results are also provided for educators and researchers.
Адаптация как фактор повышения успешности студентов в условиях социокультурных и образовательных рисков
Authors: Щербакова Татьяна Н. , Тамасханова Хава Х.
Published: April 2021

Во введении представлено обоснование актуальности исследования взаимосвязи адаптивности и детерминации успешности студентов в контексте современных рисков. Показаны результаты теоретического анализа субъективных факторов – детерминант достижения успеха в студенческом возрасте. Описаны основные направления проявления активности студента, направленной на позитивные трансформации и саморазвитие. Дана содержательная характеристика роли представлений о способах развития адаптивности личности как фактора повышения успешности в условиях неопределённости. Новизна исследования заключается в выявлении и описании субъективных факторов успеха студентов в условиях современных рисков. В содержание статьи включён сопоставительный анализ различных типов адаптации и их эффектов в практической активности развивающегося субъекта. Раздел Методы описывает методики и анкеты, используемые в исследовании. Описана выборка – студенты факультета психологии Донского Государственного Технического Университета (ДГТУ). В разделе Результаты показана роль рефлексии опыта адаптации и достижения успеха в проектировании конструктивной индивидуальной траектории продвижения в учебно-профессиональной деятельности. В данном модуле содержится анализ критериев высокого уровня развития адаптивности студентов в условиях современных рисков. В Обсуждении результатов представлено описание и интерпретация результатов эмпирического исследования представлений студентов об адаптивности и детерминантах достижения успеха в современных условиях. Данные эмпирического исследования показывают значение представлений студентов о факторах успеха в регуляции поведения и деятельности. Впервые показана роль развития индивидуальной мотивации роста и устойчивости личности в определении продуктивности поведения студентов в условиях современных образовательных и социальных рисков. В Заключении подчеркивается наличие связи степени адаптивности и успешности личности студентов. Делается вывод о том, что уровень осмысления специфики проявлений неопределенности в современной ситуации способствует формированию устойчивости личности, ее продуктивности, жизнестойкости и конструктивности. Приведена модель программы повышения уровня адаптивности студентов как фактора детерминации успешности студентов в современных условиях.
Effect of Trade Liberalization on Asymmetric Countries for Homogenous and Differentiate Product: Case of Pakistan-China Free Trade Agreement
Authors: Ahmed Arsalan , Hong Qi Jian , Tahir Hassan
Published: April 2021

The study performs an empirical test to assess the impact of the Pakistan-China Free trade agreement (FTA) on Pakistan, China, and the World's exports under homogenous and differentiated products. This study employs the modeling with Poisson specification with Poisson Pseudo-Maximum Likelihood method for the estimations. The results of empirical test show that the effect of FTA on the FTA and Non-FTA countries is greater in the differentiated product as compared to the homogenous product. Therefore, one of the most important policy implications provided by this study is that export enterprises need to concentrate on differentiated products as compare to the homogenous products after the implementation of the Pakistan-China FTA. Moreover, the previous literature concluded that Pakistan-China FTA was more beneficial for China as compared to Pakistan. However, according to this study, if Pakistani enterprises focus more on differentiated products as compared to homogenous products, then it will be equally beneficial for both Chinese and Pakistani enterprises. This study will contribute to the literature by considering the Bertrand competition between asymmetric countries and find out the effect of the FTA on these three countries. It considers China, Pakistan, and the Rest of the World as first, second, and third countries.
The impact of official business style on russian media news internet discourse
Authors: Ivanova Mariia V. , Klushina Natalia I.
Published: April 2021

El estilo comercial oficial se formó en la lengua literaria rusa antes que otros estilos, y sigue siendo relevante actualmente. También tiene un fuerte impacto en el discurso de los medios de comunicación modernos, especialmente en el discurso de las noticias de Internet. Para implementar la categoría de credibilidad, en el discurso de Internet de los medios modernos se utilizan características del estilo comercial oficial, como la objetividad, la formalidad, la oficialidad, la neutralidad y la ausencia de juicio del autor. La composición estandarizada de los documentos se correlaciona con la estructura compositiva cliché de las noticias. Esta es una forma impersonal de narración, construcciones pasivas, numerales, cronotopo, abreviaturas, sustantivos verbales y otras características del estilo comercial oficial. El estudio del estilo comercial oficial nos permite establecer paralelismos con las peculiaridades del discurso periodístico moderno en el entorno de Internet. La investigación sobre la influencia del estilo comercial oficial en el estilo del discurso informativo de Internet demuestra una tendencia importante en el periodismo informativo contemporáneo: presentación oficial de información, que la audiencia percibe como socialmente significativa, confiable y de alta calidad.
IARespira: experiencias en el diseño y desarrollo de un Ventilador Mecánico No Invasivo para COVID-19
Authors: Salibe Martin , Fliger Elias , Garcia Leandro Manuel , Romero Gustavo
Published: April 2021

La irrupción de la pandemia de COVID-19 en febrero de 2020 y la velocidad de propagación entre la población a nivel mundial de la enfermedad, provocó una demanda inusitada de ventiladores mecánicos, producto de los efectos reactivos al virus en el sistema respiratorio de las personas. El acelerado incremento de pacientes infectados graves, sobre exigió a los servicios de atención médica causando un colapso general del sistema de salud. El área de Transferencia de Tecnología del Instituto Argentino de Radioastronomía (IAR) reaccionó al problema iniciando el diseño y desarrollo de un ventilador mecánico no invasivo (VMNI) de bajo costo, denominado IARespira, para la asistencia a pacientes de gravedad moderada, durante el brote de COVID-19. El VMNI trabaja con un control de presión con tres modos de ventilación posibles: CPAP (presión positiva continua en las vías respiratorias), BiPAP (presión positiva de dos niveles) y Asistida/Controlada. Además, el proyecto propone una solución a la dificultad de acceso a insumos críticos con elementos disponibles principalmente en el mercado local. El diseño se orientó para una rápida fabricación y pronta disponibilidad en los centros de salud de la Argentina.
Road development and Indigenous hunting in Tanah Papua: Connecting the facts for future wildlife conservation agendas
Authors: Pattiselanno Freddy , Krockenberger Andrew
Published: April 2021

Road development is increasing worldwide. Generally, examples of road building in tropical countries demonstrate that road access can assist the fight against rural poverty, but such developments are also linked to deforestation, pollution, invasions of exotic species, and environmental degradation. For Papua and West Papua provinces (Tanah Papua) in Indonesia, the development of the provincial road network is intended to improve the rural economy, aiming to alleviate poverty within isolated rural areas. However, road development can pose particularly challenging problems to rural and Indigenous communities. Poorly planned roads can be devastating when they provide easy access to illegal hunting that threatens endangered species. In this study, we discuss how road development in Tanah Papua has changed indigenous hunting. Native Papuans have benefited from improved road access, which allows them to sell their agricultural products at local markets. Increased road connectivity has also changed how local people use natural resources and forest products, moving from subsistence to a more market-based orientation. Although policies on infrastructure development including roads form part of Indonesia’s national program, they are not automatically compatible with a sustainable development program in Tanah Papua. To foster more equitable and sustainable road development, government agencies must improve their overall coordination of further road expansion plans by promoting green infrastructure that supports the sustainable use of natural resources in a way that is reconciled with traditional knowledge of local people. Such efforts may also have positive effects on the efforts to protect biodiversity within the wider government conservation agendas.
Maquiavel e a Virtù em Ato
Authors: Borisonik Hernán Gabriel
Published: April 2021

O artigo objetiva refletir sobre alguns aspectos do pensamento de Maquiavel, em particular seus posicionamentos em relação à célebre virtù (como faceta primordial da ragion di Stato), entendidos a partir da perspectiva categórica da filosofia prática. Para isso, por um lado, serão revisadas as opiniões expressadas pelo florentino contra a ideia de virtude como forma universal e abstrata e a favor de um ajustamento permanente com as contingencias do mundo. De outro lado, a análise de um trabalho pouco considerado pela maioria dos comentadores de Maquiavel, como A vida de Castruccio Castracani (lido em concomitância com os clássicos O Príncipe e Discursos), ajudará a sustentar tal interpretação, em relação à conceição maquiaveliana da virtù e sua colocação sobre a necessidade de estabelecer o Estado nacional.
Palavras-Chave: Maquiavel. Virtù. Castruccio Castracani.
Crítica à primazia da economia
Authors: Salvetti Ésio Francisco
Published: April 2021

O objetivo deste artigo é apresentar uma visão crítica da economia neoliberal e do processo que possibilitou a primazia do poder econômico. Fundamentando-se na visão crítica de Agamben, compreende-se que é frente ao econômico que as análises devem se situar para uma compreensão da contemporaneidade e para pensar formas de superação da vida nua. Para situar de maneira histórica e filosófica a problemática do artigo, inicia-se com uma análise da hegemonia ideológica do projeto neoliberal. No segundo momento, buscou-se relacionar economia com religião dando destaque a tese de Benjamin que “o capitalismo é realmente uma religião”, por entender que esse processo tem consequências éticas e políticas graves. No terceiro momento, seguindo os passos de Agamben, retorna-se aos primeiros padres da igreja para entender o processo teológico que mantêm viva essa relação da economia com a religião. Conclui-se que a economia capitalista herda as condições dadas pela teologia judaico-cristã. Ou seja, a partir do momento em que há a separação de reino e governo, a concepção de economia inicia a adentrar no âmbito da política, especialmente porque passa a configurar um modelo para aquilo que formará o início de uma ordem jurídica nas sociedades ocidentais.
Palavras-chave: Economia. Política. Neoliberalismo. Agamben.
Estudo comparativo das notificações da violência contra a mulher antes e durante a pandemia do COVID-19 no Planalto Norte Catarinense
Authors: Caus Eliz Cristine Maurer , Andrade Jéssica Angelita de , John Keithy Gabrielly , Wojciechowski Micheli , Munhoz Patrícia
Published: April 2021

A violência contra a mulher é reflexo das relações de poder que estruturam a sociedade moderna, na qual as desigualdades existentes entre homens e mulheres, forçam-nas a assumir posições de subordinação. Na pandemia do Covid-19, os protocolos de saúde recomendaram o isolamento social, que repercutiu em problemas sociais e deixaram a mulher exposta à violência doméstica. Assim questionou-se: qual a relação das ocorrências da violência doméstica contra a mulher no antes e durante a pandemia no Planalto Norte Catarinense?  O objetivo geral foi conhecer a relação das ocorrências da violência antes e durante a pandemia. Realizou-se um estudo documental, descritivo, quantitativo, baseado no Sistema de Notificação de Agravos oficial acessados no site da Diretoria de Vigilância Epidemiológica estadual, na qual levantou-se as notificações dos 13 municípios da 25ª Agência de Desenvolvimento Regional de março a junho de 2019 e o mesmo período de 2020. Os resultados apontam para uma redução 46,4% de casos (153 para 82), o problema atinge mais as mulheres entre 20 a 60 anos, com ensino médio, prevalece a agressão física. Destaca-se a violência autoprovocada, na qual a mulher convive com uma situação extremamente desgastante tanto física quanto psicologicamente, buscando acabar com seu sofrimento. Conclui-se houve diminuição da notificação de casos, que sugere dificuldade da vítima em buscar ajuda. Por isso há necessidade de um olhar diferenciado para o problema, com estratégias inovadoras e profissionais capacitados para o enfrentamento do problema.
Palavras Chave: Violência contra a mulher. COVID-19. Enfermagem.
Attitude control for the rigid spacecraft with the improved extended state observer
Authors: Cao Yuteng , Liu Qi , He Guiqin , Zhao Qiuling , Liu Fang
Published: April 2021

In this article, a three-axis attitude manoeuvre spacecraft consisting of a central rigid body and a rotating solar array is studied. The rotating solar array is considered a disturbance to the spacecraft. In the design of the controller, the coupled terms and the rotating solar array are considered a disturbance. The improved extended state observer is proposed by combing the sliding mode observer with the originally extended state observer to estimate the disturbance. The sliding mode control method is adopted to adjust the attitude of the spacecraft. Numerical simulations are presented to demonstrate the outstanding performance of the present observer.