bluuebunny/crossref_metadata_2025 huggingface dataset:
Methods of antenna and «antenna- radome» system analysis based on amplitude and phase measurements of their far field spherical components
Authors: Kirpanev A. V. , Kirpanev N. A.
Published: March 2021

The main principles of electric intensity recovery of electrical field in tested antenna aperture or in the «antenna radome» system radome-close aperture field (false aperture) by amplitude and phase long-range measurements are proposed. Measurements zone means a part of the spherical surface that envelopes analyzed antenna, the boarder of this surface are determined by the kinematic scheme of rotary joint of the scanner. Recovery of amplitude and phase distribution of the field in a flat aperture area or on the plane where array irradiators are located is used in case of wave diagnostics of such type of antennas. It is proposed to use the recovered phase distribution in a false aperture for a phase correction on phased array irradiators in order to compensate phase errors appeared because of the radome. The method of radome dielectric permittivity is discussed.
To question of tertiary processing of radar information in network structures
Authors: Palguyev D. A. , Shentyabin A. N. , Borzov A. B. , Vasilyev D. A. , Morozov N. S.
Published: March 2021

The use of an integrated approach to the analysis of the construction of existing information systems, including not only mathematical and algorithmic, but also ontological, epistemological components, makes it possible to consider many familiar issues from a slightly different point of view. If the main criterion for the construction of a network-type information system is the time spent by radar information in the information system, and the goal is to minimize it, then the limitations introduced in the development of the traditional algorithm for tertiary processing of radar information become clear. Attempts to apply the algorithm developed for different from modern conditions and requirements lead to contradictions in the construction of information systems. The list of requirements for promising information systems obtained on the basis of the analysis of traditional tertiary processing allows us to consider the main problems of information processing and delivery from a slightly different point of view and, thus, prepare the basis for building promising information systems of a network structure.
Comparative analysis of possible approaches to simulation of processes of processing and analysis of telemetric information
Authors: Bundin G. G. , Volkov M. N. , Zaytsev D. O. , Nikolaev A. Yu. , Shmelyov V. V.
Published: March 2021

The paper considers specialized and general-purpose approaches to modeling computational processes over measurement information. The concept of the scheme of telemetry information processing is considered. The analysis of approaches to the presentation of processing and analysis of telemetric information in the subject area of operational control of the technical condition of space vehicles in real time is carried out. An analysis of the advantages and disadvantages of approaches to modeling is carried out, on the basis of which it is possible to draw a conclusion about the advisability of using a particular model of the computational process when solving various problems. A summary of the approaches to modeling computational processes is given, and examples of well-known applied implementations are considered. The features of computing processes over telemetry information are presented, which should be taken into account in promising developments aimed at automating processes in the subject area under consideration.
Microwave Bragg structures in a half-open coaxial line
Authors: Nasybullin A. R. , Morozov O. G. , Farkhutdinov R. V. , Ishkaev T. M.
Published: March 2021

Bragg microwave structures in a coaxial line have found application as converting elements in devices for dielectric control of liquid and bulk medias. A feature of the measuring conversion of the complex dielectric constant in coaxial structures is the introduction of the substance under study into the inner space of the line. The latter circumstance imposes certain restrictions on the design of the external conductor for express control. In this regard, the consideration of half-open coaxial lines based on an external conductor in the form of longitudinal conducting rods is an urgent problem. The article proposes a method for calculating the wave impedance of a half-open coaxial line using a numerical calculation of electromagnetic fields. Based on the results of modeling Bragg microwave structures in a half-open coaxial line, recommendations are made for the construction of conversion elements based on them.
The emotional experience among nurses caring for COVID-19 patients in Hail Region, Saudi Arabia
Authors:   1Nursing Administration, Ministry of Health, Hail, Saudi Arabia, et al. Alreshidi
Published: March 2021

To assess and describe the emotional experience among nurses caring for COVID-19 patients in the Hail region, Saudi Arabia, a qualitative research design using a phenomenological approach in selected hospitals Hail Region was performed. The researcher identified 30 nurses who provided care for COVID-19 patients. The interview was conducted in person by following the precautionary guidelines or by WhatsApp Application system and the analysis done using Colaizzi's 7-step method. In the present study, the demographic data revealed that 87% of the nurses were females and the remaining participants were Saudi male nurses. Most of the participants (50%) were in the age group 24–29 years. About 66% were Indian, 17% were Filipina, and 17% were Saudi nurses. Moreover, 50% of those nurses have 5–9 years of experience and 37% are young nurses who have 1–4 years of experience. Thus, it is obvious that well-experienced staff are involved in this pandemic duty. Regarding the marital status of the nurses, 50% are married and 50% single. Among 63% of the nurses in this study either unmarried or married without children; 24% of them have a single child; and 13% have more than 2 children. For those who were living with family, the hospital administration arranged certain measures for isolating them during duty. The emotional experience among nurses caring for COVID-19 patients which were narrated by the staffs was transliterated, and the findings were shown based on 4 themes with subthemes as follows: enhancing the negative emotions and feelings at an initial phase, managing coping mechanism, changing anxiety to evolution, and developing positive emotions and at the same time gradually diminishing negative ones. The respondents able to recognize two sets of emotions: One positive and the other one negative. Self-coping styles, psychological well-being, and emotional stability has been developed. While comparing to the other studies the health care workers must be mandatory in crisis management and preparedness. These emotions will then form the foundation of the description and assessment of the overall emotional experiences of the nurses when the Ministry of Health (MOH) decides to enforce a mental wellness program for the country’s nurses.
Electronic-health in Saudi Arabia: A review
Authors:   Department of Health Informatics, College of Public Health and Health Informatics, University of Ha'il, Ha'il, Saudi Arabia, Alshammari Muteb H.
Published: March 2021

Different nations across the world are attempting to embrace e-health as a platform for transforming healthcare delivery. This review focuses on the state of e-health in KSA, including studies on trends and current technologies employed in e-health. It has been determined in this paper that even though e-health is being implemented in Saudi Arabia, the rate of implementation is quite slow, and it seems to lag behind the rate that was desired and envisioned. Additionally, some challenges hinder the adoption and effective implementation of e-health, including lack of awareness, lack of talented workforce, and ineffective planning. It has been determined that if these challenges are overcome, then e-health can be adapted efficiently.
Характер взаимодействия в системе SnSb-=SUB=-2-=/SUB=-Te-=SUB=-4-=/SUB=--SnBi-=SUB=-2-=/SUB=-Te-=SUB=-4-=/SUB=- и термоэлектрические свойства твердых растворов (SnSb-=SUB=-2-=/SUB=-Te-=SUB=-4-=/SUB=-)-=SUB=-1-x-=/SUB=-(SnBi-=SUB=-2-=/SUB=-Te-=SUB=-4-=/SUB=-)-=SUB=-x-=/SUB=-
Authors: Гурбанов Г.Р. , Адыгезалова М.Б.
Published: March 2021

Впервые различными физико-химическими методами в широком интервале температур изучен характер взаимодействия компонентов по разрезу SnSb2Te4-SnBi2Te4 и построены диаграммы состояния. Установлено, что разрез является квазибинарным сечением квазитройной системы SnTe-Sb2Te3-Bi2Te3. В разрезе имеется четверное соединение SnSbBiTe4, плавящееся конгруэнтно при 900 K. Монокристаллы четверного соединения SnSbBiTe4 получены методом химических транспортных реакций. Методом рентгенографического анализа определены параметры элементарной ячейки монокристаллов четверного соединения: a=4.356 Angstrem, c=41.531 Angstrem. Установлено, что соединение кристаллизуется в решетке тетрадимита ромбоэдрической сингонии, пр. гр. R3m, заряд z=3, объем элементарной ячейки V=682.43 Angstrem3. Измерены термоэлектрические параметры (SnSb2Te4)1-x(SnBi2Te4)x в интервале температур 300-600 K. При увеличении содержания SnBi2Te4 в твердых растворах увеличивается термоэлектрическая эффективность. Термоэлектрическая эффективность образца твердых растворов (SnSb2Te4)1-x(SnBi2Te4)x с x=1.0 имеет максимальное значение Z=3.1·10-3 K-1 при 300 K. Ключевые слова: твердые растворы (SnSb2Te4)1-x(SnBi2Te4)x, четверные соединения, квазитройная система, диаграмма состояния, фазовое равновесие, электропроводность, коэффициента термоэдс, теплопроводность.
Аномальные фотоэлектрические явления в кремнии с нанокластерами атомов марганца
Authors: Бахадирханов М.К. , Исамов С.Б. , Зикриллаев Н.Ф. , Турсунов М.О.
Published: March 2021

Показано, что в кремнии с нанокластерами атомов марганца наблюдается ряд аномальных фотоэлектрических явлений, таких как примесная остаточная фотопроводимость с большим временем релаксации, инфракрасное гашение фотопроводимости при отсутствии собственного фонового света, гигантская примесная фотопроводимость и примесная суперлинейная ватт-амперная характеристика, связанные с наличием нанокластеров атомов марганца. Природу этих явлений невозможно объяснить существующей теорией фотопроводимости. Такие материалы могут быть использованы для создания новых типов фотоэлектрических приборов. Ключевые слова: кремний, марганец, нанокластер, ИК гашение, фотопроводимость, фотоотклик.
Формирование нанокристаллов германия в пленках GeO[SiO-=SUB=-2-=/SUB=-] и GeO[SiO]
Authors: Fan Zhang , Черкова С.Г. , Володин В.А.
Published: March 2021

Films of nonstoichiometric germanosilicate glasses GeO0.5[SiO2]0.5 and GeO0.5[SiO]0.5 were obtained by co-evaporation of GeO2 and SiO2 or GeO2 and SiO powders, respectively, and by deposition on cold Si (100) and fused quartz substrates in a high vacuum. Then the films were annealed at temperatures up to 900 oC. The presence and phase composition of germanium nanoclusters in the films was investigated using Raman spectroscopy technique. The transformation after annealing of the GeSixOy matrix surrounding the nanoclusters was investigated using Fourier transform infrared spectroscopy. Analysis of the Raman spectra showed that annealing at a temperature of 800 oC led to the formation of germanium nanocrystals (NC-Ge), but the content of the amorphous germanium phase remains up to half of the volume. Annealing at a temperature of 900 oC led to almost complete crystallization of amorphous nanoclusters in all films. The sizes of the NC-Ge depended on the annealing temperature, the composition of the films, and on the substrate; in this case, the formation of Ge-Si nanocrystals was not observed.
Возникновение зеленой окраски в кристаллах AlN, выращенных на затравках SiC
Authors: Нагалюк С.С. , Мохов Е.Н. , Казарова О.П. , Бер Б.Я. , Анисимов А.А. , Бреев И.Д.
Published: March 2021

Исследованы причины, приводящие к появлению зеленой окраски кристаллов AlN, выращиваемых методом сублимации на затравках SiC. Методом вторичной ионной масс-спектроскопии показано, что цвет кристаллов слабо зависит от содержания кремния и углерода, а зеленая или темная окраска возникает только при повышенном содержании углерода по сравнению с кремнием. Методом комбинационного рассеяния света установлено присутствие в этих кристаллах отдельной фазы аморфного углерода. Выделение фазы углерода в процессе роста кристаллов затрудняет получение качественных кристаллов AlN, а также твердых растворов AlN-SiC. Анализируется влияние условий роста на оптические свойства кристаллов AlN. Ключевые слова: кристалл AlN, затравка SiC, зеленая или темная окраска, аморфный углерод.
Замедление терагерцовых плазменных волн в конической структуре с графеном, накачиваемым с помощью оптических плазменных волн
Authors: Морозов М.Ю. , Моисеенко И.М. , Коротченков А.В. , Попов В.В.
Published: March 2021

Deceleration of terahertz (THz) plasma waves (plasmons) in tapered structure with graphene layer pumped by optical plasmons is studied theoretically. It is shown, that THz plasma wave is decelerated when moving toward the structure apex. Deceleration of THz plasmons in tapered structure with graphene layer pumped by optical plasmons is more efficient as compared to deceleration of THz plasmons in tapered structure with graphene screened by metal without pumping by optical plasmons for the same parameter values of the structure. The plasmon phase velocity near the taper apex can become an order of magnitude smaller as compared to that value in the input of the structure for achievable power densities of the optical plasmon.
A Study on the Management Effectiveness and Problems of Tribal Colleges in Taiwan
Authors: Ming Hsiao- , Chang Chang , Hui Yu- , Lin Lin , Chen Yen- , Huang Huang
Published: March 2021

The main purpose of this study is to analyze the development background and objectives of indigenous tribal colleges, and to understand the effectiveness and problems of its management in Taiwan. After SWOT analysis, the main findings are as follows: 1. Advantages: the unique culture of indigenous people is an opportunity for economic development. In addition, the protection of laws and regulations is the main advantage of tribal college. 2. Weakness: under the current economic system, the indigenous people are limited in land use, inconvenient transportation, inadequate agricultural technology, and unsmooth sales channels, which limit their economic development. 3. Threats: because the population flows to the city, the tribal people do not understand what kind of institution the tribal university is, and some of the funds have to be paid by the learners themselves, resulting in the low participation of the tribal people. Moreover, the units that handle tribal college are almost different every year, which affects the preservation of data. 4. Opportunities: the existence of tribal college also provides an opportunity for the inheritance and reconstruction of indigenous culture. Based on the above analysis, this study puts forward relevant suggestions for the management of tribal college
Actividad 1. ¿Cómo miro el mundo? Cartografía Poética
Authors: Luis Ernesto Perez
Published: March 2021

Actividad 1. ¿Cómo miro el mundo? Cartografía Poética
Decline of unique Pontocaspian biodiversity in the Black Sea Basin: a review
Authors: Gogaladze Aleksandre , Son Mikhail , Lattuada Matteo , Anistratenko Vitaliy , Syomin Vitaly , Pavel ana , Popa Oana-Paula , Popa Luis-Ovidiu , Poorten Jan-Johan , Biesmeijer Jacobus , Raes Niels , Wilke Thomas , Sands Arthur , Trichkova Teodora , Hubenov Zdravko , Vinarski Maxim , Anistratenko Olga , Alexenko Tatiana , Wesselingh Frank
Published: March 2021

Aim The unique aquatic Pontocaspian (PC) biota of the Black Sea Basin
(BSB) is in decline. Lack of detailed knowledge on the status and trends
of species, populations and communities hampers a thorough risk
assessment and precludes effective conservation. This paper aims to
review PC biodiversity trends using endemic molluscs as a model group.
We aim to assess changes in PC habitats, community structure and species
distribution over the past century and to identify direct anthropogenic
threats. Location Black Sea Basin (Bulgaria, Romania, Moldova, Ukraine
and Russia). Methods Presence/absence data of target mollusc species was
assembled from literature, reports and personal observations. PC
biodiversity trends in the NW BSB coastal regions were established by
comparing 20th and 21st century occurrences. Direct drivers of habitat
and biodiversity change were identified and documented. Results A very
strong decline of PC species and communities during the past century is
driven by a) damming of rivers, b) habitat modifications negatively
affecting salinity gradients, c) pollution and eutrophication, d)
invasive alien species and e) climate change. Four out of 10 studied
regions, namely, the Danube Delta – Razim Lake system, Dniester Liman,
Dnieper-South Bug Estuary and Taganrog Bay-Don Delta contain the entire
spectrum of ecological conditions to support PC communities and still
host threatened endemic PC mollusc species. Distribution data is
incomplete, but the scale of deterioration of PC species and communities
is evident from the assembled data, as are major direct threats. Main
conclusions PC biodiversity in the BSB is profoundly affected by human
activities. Standardised observation and collection data as well as
precise definition of PC biota and habitats are necessary for targeted
conservation actions. This study will help to set the research and
policy agenda required to improve data collection to accommodate
effective conservation of the unique PC biota.
On The Solvability of an Inverse Fractional Abstract Cauchy Problems with Conformable Derivative
Authors: Rabhi Lahcen , HORANI Mohammed AL , Khalil R.
Published: March 2021

In this paper, we discuss the solvability of fractional inverse problem
for the conformable derivative in Banach space. We establish an
equivalent statement of the existence and uniqueness of solution using
fractional semigroup. Some special cases of the inverse problem are
studied. An application is given to study an inverse problem in a
suitable Sobolev space for fractional parabolic partial differential
equations with unknown source functions.
Strong Instability of Solitary Waves for Inhomogeneous Nonlinear Schrödinger Equations
Authors: Wang chenglin , Zhang Jian
Published: March 2021

This paper studies the inhomogeneous nonlinear Schrödinger equations,
which may model the propagation of laser beams in nonlinear optics.
Using the cross-constrained variational method, a sharp condition for
global existence is derived. Then, by solving a variational problem, the
strong instability of solitary waves of this equation is proved.
communicating tubular sigmoid duplication
Authors: mirali houda , kamaoui imane , aichouni narjisse , Nasri Siham , skiker imane
Published: March 2021

Gastrointestinal duplications are congenital anomalies that may occur
different part of the gastrointestinal tract, they are characterized by
two forms, the cystic and the tubular one. Usually seen in ileum,
esophagus, duodenum and stomach. Colon localization is very rare.
Emerging mutations in spike and other structural proteins of SARS-CoV-2
Authors: Mukhtar Farwa , khan Muhammad Tahir , Malik Arif , Peng Shaoliang , Darwish Doaa , Muhammad Shabbir , Ullah Sami , Sheikh Ahsan , Wei Dongqing
Published: March 2021

The structural proteins, spike (S), nucleocapsid (N), membrane (M), and
envelope (E), of severe acute respiratory syndrome (SARS-CoV-2) play a
critical role from attachment to replication and virulency. Recently a
bulk of genomes have been sequenced from different geographical regions
with significant number of variations. Therefore, the current study was
aimed to find variations in the structural proteins. This is the first
comprehensive study in which we screened 2,95,000 complete genomes in
global initiative on sharing all influenza data (GISAID), submitted from
December 2019 to December 2020. We detected 4725 non-synonymous
mutations in S, 627 in M, 259 in E, and 1631 mutations in N protein,
among which the most frequently occurring mutations in S protein are
D614G (n=2,66,513), A222V (n=59,697), L18F (n=28,015) and that of M
protein are; T175M (n=1286), D3G (n=968), L17I (n=621), A2V (n=463), and
A2S (n=460). The most commonly circulating variants in E includes, S68F
(n=419), P71S (n=264), and L73F (n=218). Similarly, the N protein also
harbored the most common variants which include; R203K (n=82,570), G204R
(n=81,858), and A220V (n=39,729). The frequency of N501Y (n=4362) in S
is determining a tight interaction of CoV-2 RBD with ACE2. These wide
range of mutations in structural proteins may not only affect the
therapeutic efforts but also the vaccines efficacy and diagnostics
specificity. We suggest that geographically strain specific variations
should be investigated for effective drugs, vaccine, and the antibodies
combinations. Alternatively, immune boosting compounds might be very
useful for successful eradication of CoV-2 infections.
A Nonhomogeneous Boundary-Valued Problem for the coupled KDV system
Authors: Pei Yitong , Guo Boling
Published: March 2021

In this paper, we study the initial-boundary-value problem (IBVP) for
coupled Korteweg-de Vries equations posed on a finite interval with
nonhomogeneous boundary conditions. We overcome the requirement for
stronger smooth boundary conditions in the traditional method via the
Laplace transform. Our approach uses the strong Kato smoothing property
and the contraction mapping principle.
Cranial nerve involvement in COVID-19
Authors: Doblan Ahmet , kaplama mehmet erkan , AK SEMİH , Basmaci Nazli , GÖKTAŞ ŞENİZ , GÜLER SÜLEYMAN , TARİNİ EMİNE , müderris togay
Published: March 2021

Abstract: Introduction: The COVID-19 disease emerged in Wuhan province
of China in November 2019 and spread across the world in a short time,
resulting in a pandemic. The first case in Turkey was detected on March
11, 2020. The aim of the current study was to reveal the effects of
COVID-19 on cranial nerves by monitoring people infected with the
disease based on repeated examinations and surveys. Material and Method:
The data of 356 patients with a positive COVID-19 polymerase chain
reaction (PCR) test who received treatment between June 2020 and August
2020 in our hospital were prospectively evaluated after the study was
approved by the relevant ethics committee. Results: Of the 356 patients
included in the study, 47 under the age of 18 years were excluded due to
their unreliable examination and anamnesis findings. In addition, seven
patients that died while in hospital were excluded from the study due to
the lack of examination and survey records during their hospitalization.
The data of the remaining 302 patients were statistically analyzed.
Symptoms of cranial nerve involvement were observed in 135 patients.
Conclusion: The COVID-19 disease caused by the SARS-CoV2 virus commonly
results in cranial nerve symptoms. The fact that these findings are more
common and severe in COVID-19 than previous SARS and MERS outbreaks
suggests that it has a more neurotrophic and more aggressive
neuroinvasion. While the negative effects of the virus on sensory
functions resulting from cranial nerve involvement are evident, motor
functions are rarely affected.
Merkel Cell Carcinoma on the Right Calf in Association with Chronic Lymphocytic Leukemia, Basal Cell Carcinoma, and Seborrheic Keratosis: a case report
Authors: Babaniamansour Sepideh , Firouzabadi Mohammad Dehghani , Mohammadzadeh Hamideh , Majidi Mohammadreza , Zare Abolfazl , KarkonShayan Sepideh
Published: March 2021

Merkel cell carcinoma (MCC) is a rare tumor with neuroendocrine origin.
It presents as a single red nodule in the sun-exposed area by rapid and
aggressive growth. This study presented a rare case of MCC on an unusual
site, associated with chronic lymphocytic leukemia.
On Ostrowski-Mercer inequalities for differentiable convex function
Authors: Ali Muhammad Aamir , Sial Ifra Bashir , BUDAK Hüseyin
Published: March 2021

In this note, for differentiable convex functions, we prove some new
Ostrowski-Mercer inequalities. These inequalities generalize an
Ostrowski inequality and related inequalities proved in [3,5]. Some
applications to special means are also given.
PRPH2 mutation update: In silico assessment of 245 reported and 7 novel variants in patients with retinal disease
Authors: Peeters Manon H.C.A , Khan Mubeen , Rooijakkers Anoek A.M.B , Mulders Timo , Haer-Wigman Lonneke , Boon Camiel , Klaver Caroline , Born Ingeborgh van den , Hoyng Carel , Cremers Frans , denHollander Anneke , Dhaenens Claire-Marie , Collin Rob
Published: March 2021

Mutations in PRPH2, encoding peripherin-2, are associated with the
development of a wide variety of inherited retinal diseases (IRDs). To
determine the causality of the many PRPH2 variants that have been
discovered over the last decades, we surveyed all published PRPH2
variants up to July 2020, describing 720 index patients that in total
carried 245 unique variants. In addition, we identified seven novel
PRPH2 variants in eight additional index patients. The pathogenicity of
all variants was determined using the ACMG guidelines. With this, 107
variants were classified as pathogenic, 92 as likely pathogenic, one as
benign, and two as likely benign. The remaining 50 variants were
classified as variants of uncertain significance. Interestingly, of the
in total 252 PRPH2 variants, more than half (n=137) were missense
variants. All variants were uploaded into the Leiden Open source
Variation Database. Our study underscores the need of experimental
assays for variants of unknown significance to improve pathogenicity
classification, which is needed to better understand genotype-phenotype
correlations, and in the long-term, hopefully also support the
development of therapeutic strategies for patients with PRPH2-associated
IRD.
Complete Atrioventricular Septal Defect: Two-Patch Techniques and Modified Single Patch, Application-Outcomes.
Authors: Arslan Ahmet , Ay Sibel , Aksoy Tamer , Zor Ayşegül Karahan , Bahceci Fatma , Beşikçi Resmiye , Çiçek Sertaç , Üstünsoy Haşim
Published: March 2021

Abstract The life expectancy and quality of patients with complete
atrioventricular septal defect (CAVSD), which has undergone significant
modifications in surgical correction since its definition, are
increasing. Materials and Methods A total of 56 patients with a median
age of 9 months were operated in the last 10 years. The modified
single-patch (MSP) and two-patch technique (TPT) were applied to 37
patients and 19 patients, respectively. The patients were compared in
terms of the ventricular septal defect (VSD) diameter, cardio pulmoner
bypass (CPB) and aortic cross-clamp (ACC) time, intubation time, length
of intensive care unit (ICU) in addition to demographic and hospital
data. Long term results of 45 patients have been evaluated for 73,2 ±
4,06 months meanly. Results It was observed that the age distribution of
the patients who underwent MSP was lower (p=0.003), and were more female
patients (p=0.023). The VSD diameter was larger in the TPT (p=0.000).
The right atrioventricular valve (RAVV) repair was observed
significantly more in the MSP technique (p=0.043). CPB and ACC time were
found to be significantly longer in the TPT technique according to the
T-test result. While postoperative LAVV regurgitation was found to be
lower in the MSP (p=0.016), the amount of drainage was higher in the
TPT. No statistical significance was detected in other comparative
values of early and the long term results of the both tecniques.
Conclusion In this retrospective study, it was observed that the MSP was
advantageous in surgical outcomes, its easier applicability in
accordance with the literature.
Asymptotic behavior of a three-species food chain model with time-varying delays
Authors: Zhao Yuxiao , Wang Linshan , Wang Yangfan
Published: March 2021

In this paper, a stochastic three-species food chain model with
time-varying delays is focussed. The existence and the asymptotic
behavior of global positive solutions to the model are discussed, and
the sufficient conditions for the 1th moment practical exponential
stability and the extinction of the model are given by using the
Razumikhin technique and Lyapunov method.
Fixed-time synchronization of coupled memristive neural networks with multi-links and application in secure communication
Authors: Zhao Hui , Liu Aidi , Wang Qingjie , Zheng Mingwen , Chen Chuan , Li Baozhu , Niu Sijie
Published: March 2021

This paper is devoted to investigating the issues of fixed-time
synchronization of coupled memristive neural networks with multi-links
(MCMNN). Based on the fixed-time stability criterion and the upper bound
estimate formula for the settling time, we propose a secure
communication scheme. The network with multi-links performance and
coupled form increase the complexity of network topology and the
unstable of systems, which improve security of communication in the
aspect of encrypt the plaintext signal. We design a proper controller
and build the Lyapunov function, several effective conditions are
obtained to achieve the fixed-time synchronization of MCMNN. Moreover,
the settling times can be estimated for fixed-time synchronization
without depending on any initial values. Meanwhile, the plaintext
signals can be recovered according to the fixed-time stability theorem.
Finally, numerical simulations are given to verify the effectiveness of
the theoretical results in fixed-time synchronization of MCMNN, and an
example of a secure communication scheme is given to show the usability
and superiority based on fixed-time stability theorem.
Heterotopic pregnancy after a spontaneous conception A case report with a review of clinical, laboratory, and imaging findings
Authors: Abdelmonem Ahmed , Sayed Gamal , Abugazia Abd Elwahid , Kohla Samah , Youssef Reda
Published: March 2021

Heterotopic pregnancy (HP) describes the simultaneous presence of two
pregnancies at different implantation sites. One is intrauterine and the
other is ectopic. It is challenging to diagnose HP. We present a very
rare case of HP diagnosed in the first trimester by US and MRI and
managed successfully.
Diel activity patterns of urban Woodchucks (Marmota monax) revealed by camera traps at burrows in southwestern Ontario, Canada
Authors: Steen Ronny
Published: March 2021

Animals display a range of diurnal and nocturnal activity patterns and, among mammals, a high proportion of species are crepuscular or nocturnal. Daily activities are often endogenous and oscillate on a light:dark regime. Such cycles are referred to as ‘circadian’ and are generally influenced by biotic and abiotic factors. I investigated the daily activity of urban Woodchucks (Marmota monax) by using 24-hour camera traps at backyard burrows in London, Ontario, Canada, in June. Cameras enabled the collection of data that would otherwise have been labour intensive by direct observation. Statistical modelling showed that Woodchucks exhibited a strictly diurnal activity pattern. The unimodal activity pattern started at sunrise and ended before sunset. The general daily activity trend was similar to the pattern described by others who used direct observations and telemetry to monitor Woodchucks in more rural settings. Temperature and wind were not included in the best-fit model. Camera trapping is a non-invasive method that could give insight to diel activity as it can easily monitor extended periods and reduce the effort required by direct observation.
Habitat use by Veery (Catharus fuscescens) in southern Ontario
Authors: Hawey Connor , Harpley Paul , Milne Rob
Published: March 2021

Veery (Catharus fuscescens) is a breeding migrant thrush that nests throughout much of the temperate forests within Canada. Habitat loss and degradation is thought to be responsible for a steady decline in Veery populations since 1970. We studied habitat characteristics of occupied Veery territories versus unoccupied adjacent areas in southern Ontario during the 2016 breeding season. Occupied territories were characterized as riparian deciduous forests dominated by ash (Fraxinus spp.), Black Cherry (Prunus serotina), and Red Maple (Acer rubrum) trees with an understorey of Balsam Fir (Abies balsamea) and ferns (order Polypodiales); the presence of fruit-producing plants such as Riverbank Grape (Vitis riparia) and Bunchberry (Cornus canadensis) also was important.
Year-round patterns of mineral lick use by Moose (Alces americanus), deer, and Elk (Cervus canadensis) in north-central British Columbia
Authors: Brochez Carolyn Brianna , Rea Roy V. , Crowley Shannon M. , Hodder Dexter P.
Published: March 2021

Natural mineral licks are important to the physiological ecology of several species of ungulates in North America and abroad. Information on year-round patterns of mineral lick use by ungulates in Canada is poorly understood. We used camera traps to record patterns of mineral lick use by four ungulate species visiting five naturally occurring mineral licks located within the John Prince Research Forest and surrounding area, near Fort St. James, British Columbia, Canada. Our cameras detected over 1800 mineral lick visits by ungulates from February 2017 to January 2018. Mineral licks were visited year-round, however, most visits were made between May and September during morning hours. We observed variable lick visitations among sites, species, and sex and age classes. The species observed in descending number of lick visits included Moose (Alces americanus), White-tailed Deer (Odocoileus virginianus), Elk (Cervus canadensis), and Mule Deer (Odocoileus hemionus). Some licks were visited by all four species, while others were visited by fewer. Female ungulates were recorded at licks more frequently than males or juveniles, which likely reflected the underlying sex and age structure of the population. Elk spent more time at licks than Moose and deer and there was no difference in visit durations between Moose and deer. Most visits were made by single animals, but group visits were also observed. Our findings provide evidence that mineral licks are used year-round by ungulates and appear to be important habitat features on the landscape.
Epimeletic behaviour in a Southern Resident Killer Whale (Orcinus orca)
Authors: Shedd Taylor , Northey Allison , Larson Shawn
Published: March 2021

Southern Resident Killer Whale (SRKW, Orcinus orca) may be found year round in the Salish Sea. These orcas comprise three matrilineal pods (J, K, and L) and were listed as Endangered under the Canadian Species at Risk Act in 2003 and under the United States Endangered Species Act in 2005 because of prey scarcity, vessel noise and disturbance, small population size, and exposure to toxins. Since 1993, the Whale Museum has been operating Soundwatch, a boater education program for vessels. Soundwatch personnel are on the water in the central Salish Sea throughout the summer educating boaters on how to maneuver near marine mammals legally and documenting vessel regulation violations and marine mammal presence and behaviour. Starting on 24 July 2018, Soundwatch documented an adult female SRKW of J pod (J35) carrying a dead neonate calf. J35 continued to carry her dead calf for 17 consecutive days covering ~1600 km. Her story riveted the attention of the people of the Salish Sea as well as people around the world, evoking empathy for J35 and her loss as well as the plight of the Endangered SRKW population. Here, we tell her story and evaluate whether the behaviour J35 displayed toward her dead calf was an example of epimeletic behaviour, animal grief.
Arithmetic Study about Energy Save in Switches for some Data Centre Topologies
Authors: ROİG Pedro Juan , ALCARAZ Salvador , GILLY Katja , JUİZ Carlos
Published: March 2021

Data Centre facilities are rapidly increasing as parallel computing schemes are ever growing. Those kinds of facilities are designed according to different topologies, but many of them are underutilized, leading to energy misuse in many of the switches providing network interconnection for the end hosts. In this paper, some common Data Centre topologies are studied, such as Fat Tree, Leaf and Spine, N-Hypercube and Folded N-Hypercube, in order to find out their performances in terms of energy saving purposes for the same number of hosts hanging on each design, hence obtaining a coherent comparison among them all. It is to be said that each topology has its own benefits and drawbacks, meaning that each one may be the best option depending on the initial conditions of an implementation. However, in the conditions established for steady latency and jitter, it seems that Fat Tree topologies get better results as the size of the Data Centre grows up, whereas Leaf and Spine does it otherwise.
A Poética de Gervane de Paula: reflexões para o artivismo e a decolonialidade
Authors: Monteiro da Fonseca José Henrique , Bertoloto José Serafim , Santana de Figueiredo Claudio José , Lorensoni Muryllo Rhafael
Published: March 2021

A partir do presente texto intenta-se uma reflexão e doravante uma possível aproximação através de pesquisa ao universo do artista plástico Gervane de Paula, bem como de sua obra e os sentidos sociais, concretos e subjetivos, que esta deixa em suas expressões irreverentes e críticas. É inegável a riqueza expressiva contida na obra desse artista latino americano, a qual aponta para as realidades sociais gritantes e ao mesmo tempo, muitas vezes não percebidas em nosso contexto. Uma vez que, o saber positivista pouco se inclina a subjetividade do diferente, do estranho, do diverso e daqueles que não se submetem aos padrões naturalizados enquanto únicos e verídicos; eis aí uma oportunidade de legitimação acadêmica da obra de Gervane, mas antes, uma aproximação de seu universo e seu modo impar de estar no mundo, de interagir com a realidade e nomeá-la de modo rico, expressivo e irreverente, visto sua poética estar de algum modo imbricada ao artivismo e ao pensamento decolonial, tão necessários e indispensáveis em nosso contexto.
Uma corpo-políitica do conhecimento feminino: questionar pelos sentidos, pelos corpos e pelo sul
Authors: Soares Nathalia Flores , Nolasco Edgar Cézar
Published: March 2021

Este trabalho vai em busca de um diálogo critico entre a escrita autobiográfica da professora, intelectual e escritora Heloísa Buarque de Hollanda e as relações imbricadas nos contextos culturais, sociais e marginais presentes nas regiões (ex)cêntricas do país, na tentativa de reatualizar problemáticas já delineadas no passado, o enfoque se voltara para as teorizações feministas delineadas pela professora ao decorrer de seu projeto intelectual. Pretende-se aqui mostrar como a escrita do eu revela tensões ideológicas, epistêmicas e críticas na vida de quem se propõe a escrever autobiografias, sendo assim, o objeto norteador será a obra Escolhas (2009). Em síntese, a análise se voltará para a condição das mulheres latinas americanas, precisamente no cenário brasileiro contemporâneo, com enfoque na crescente onda de manifestações feministas, na rua e na academia
ANALISIS FAKTOR YANG MENENTUKAN KEBERHASILAN PEMBANGUNAN JALAN TOL (STUDI KASUS LEMATANG – KOTABARU)
Authors: Akbar Aldharin Rizky , Sulistyorini Rahayu , Afriani Lusmeilia
Published: March 2021

Pembangunan jalan tol merupakan salah satu bentuk usaha pemerintah dalam memudahkan masyarakat di Indonesia untuk bisa melakukan mobilitas mereka baik dalam hal ekonomi, maupun sosial secara baik dan cepat. Penelitian ini bertujuan untuk mengetahui faktor-faktor yang dapat menentukan keberhasilan pembangunan jalan tol yaitu khususnya jalan tol trans Sumatera pada Provinsi Lampung melalui aspek efisien jarak dan waktu, aspek ekonomi masyarakat, aspek pariwisata, aspek keamanan, dan aspek lingkungan. Analisis dalam penelitian ini melihat secara lengkap baik dari sisi eksternal maupun internal dengan menggunakan analisis SWOT. Hasil penelitian ini membuktikan bahwa Jalan Tol Trans Sumatera dapat membantu masyarakat dapat menangani masalah kemacetan, membuat aksesibilitas jarak tempuh lebih efisien dan dapat mengundang para investor baru untuk berinvestasi di Provinsi Lampung. Selain sisi positif, terbukti juga bahwa jalan tol tersebut memiliki dampak negatif yaitu salah satunya adalah dampak negatif terhadap perekonomian usaha mikro kecil dan menengah (UMKM). Selain itu, jalan tol juga memiliki dampak negatif lain yang cukup harus diperhatikan, karena ternyata terbukti tingkat kecelakaan pada jalan tol trans sumatera terbilang tinggi semenjak jalan tol tersebut resmi beroprasi dan kejadian ini mayoritas diakibatkan karena kelalaian pengemudi atau pengguna jalan tol.
Amino Acid Profiles and Bioactive Compounds of Four Inedible Mushrooms from Oban Division of Cross River National Park (CRNP), Nigeria
Authors: Oni Juliet O. , Akomaye Ferdinand A. , Umana Etim J. , Damian Anthony O.
Published: March 2021

Inedible mushrooms are endowed with diverse nutritional and nutraceutical compounds. In this study, the amino acid profile, and phytochemical fingerprints of four selected wild inedible mushroom species from Oban Division of Cross River National Park (CRNP), Nigeria including Crepidotus applanatus (Pers.) P. Kumm, Daldinia concentrica (Bolton) Cesati & de Notaris, Oxyporus populinus (Schumach.) Donk and Trametes versicolor (L.) Lloyd were investigated. The fresh sporocarps of study mushroom were collected from the decaying wood during July 2018. Samples for amino acids profiling were dried to constant weight, defatted, hydrolyzed, evaporated in a rotary evaporator and loaded into the cartridge of the Applied Biosystems PTH Amino Acid Analyzer and analyzed for 45 minutes. The samples for phytochemical analysis were subjected to methanol extraction using a Soxhlet extractor and rotatory evaporator and injected into the column of an Agilent gas chromatography mass spectrometer (GCMS). The results of amino acid analysis revealed the presence of ten essential and eight non-essential amino acids in varying quantities across the species. The total amino acid content was highest in C. applanatus followed by D. concentrica, T. versicolor, and O. populinus in decreasing order. Glutamic acid, Arginine, and Aspartic acid were present in the highest amounts while Cystine, Lysine, and Histidine were the least across the species. The phytochemical screening of the samples led to the identification of 24 different compounds in D. concentrica, six compounds each in C. applanatus and O. populinus and three compounds in T. versicolor. In terms of percentage composition, 4H-Imidazo(1,5-a)(1,4)benzodiazepine-3-carboxylic acid, 5,6-dihydro-5-methyl-6-oxo-, ethyl ester, 1-Methylbicyclo[3.2.1]octane, Acetamide, N-(6-acetylaminobenzothiazol-2-yl)-2-(adamantan-1-yl)- and 9,19-Cyclolanost-24-en-3-ol, (3.beta.)-,TMS derivative were the most dominant compounds in C. applanatus, D. concentrica and T. versicolor respectively. The identified compound reportedly shows diverse bioactive activities, including antiviral, anticancer, antioxidant, hypocholesterolemic, anaphylactic, neurostimulant, pesticidal, insecticide and insecticidal activities. This data may represent the baseline information on the amino acid profiles and bioactive constituents of inedible mushroom species from Nigeria, as sources of noble compounds of substantial nutritional, medicinal and agricultural importance.
Employee’s Resistance and Organizational Change Factors
Authors: Furxhi Gentisa
Published: March 2021

Organizations need to change due to challenges they are facing caused by the dynamic environment where they operate. Also, organizations undertake changes because they have new ideas to improve their performance. So, organizational changes are imposed by factors of external or internal environment. The aim of every change is to improve organizational performance by increasing its effectiveness. Sometimes, changes are proposed during crises time. In crisis’s situation, organizations need to cut their costs, and the most common change is reducing staff.

In every situation, change is something new for employees. Change affect employees because they are going to implement it. They can show positive attitude/behavior (readiness to change) or negative attitude/behavior (resistance to change) to proposed change. When employees show positive attitude, they agree on change and they are motivated to implement it. On the other hand, negative attitudes reflect that employees do not agree to organizational change. They are not motivated to involve in organizational change and sometimes they refuse it. Change managers are interested to have employees which are motivated and opened to change because this can lead to a successful change management process. On the other side, resistance to change can lead to the failure of change, because resistance may create costs and delays into change management process.

This paper will explain which factors impose organizations to undertake changes time to time. Also, it will analyze how employees behave during organizational change. The aim of this paper is to explain why employees resist to organizational change and how can change managers reduce employees resistance.
Effectiveness of Beauveria bassiana Bioinsecticide against the Erannis jacobsoni diak
Authors: Khureldagva Otgonjargal , Enkhsaikhan Batsaikhan
Published: March 2021

We tested the bioactivity bioinsecticide of Beauveria bassiana –G07 /Bassiana muscardin/ against the Jacobson's spanworm /Erannis jacobsoni Diak/, which is the most destructive pest in the forest. The experiment was conducted 5 variants (1.5×106 spore/ml, 1.5×107 spore/ml, 1.5×108 spore/ml, 1.5×109 spore/ml, control), 3 times on the larvaes in the laboratory in 14 days. For the field experiment, we used 4 variants (1.5×1013 spore/he, 2.5×1013 spore/he, 3.5×1013 spore/he, control), 3 times in 21 days. From the result of laboratory study the 1.5×109 spore shows 91.9% bioactivity, and in the field study 3.5×1013 spore/he shows 80% bioactivity. Local strain B. bassiana –G07 and cultures of B. Bassiana, which were isolated from larvaes, died during the laboratory experiment, were detected and it was identified as species B. bassiana by PCR.
Optimization of Extrusion Conditions and Cooked Vegetable-Chicken Mixture for Instant Banana-Vegetable Soup Powder
Authors: Ainebyona Paddy , Kigozi Julia , Mukisa Ivan M.
Published: March 2021

Instant soups are preferred by consumers for their flexibility in preparation and longer storage life. Extrusion cooking is one of the recent developments reported to improve nutrient content of soups. However, little information is available regarding use of extrusion cooking in development of banana vegetable soups. This study investigated the use of extrusion cooking in production of instant banana-vegetable soup. The moisture content was varied using a chicken broth prepared from chicken wings and spicy vegetables (thyme, rosemary, parsley, etc.) to improve flavor and acceptability of the extruded product. The mixture of Banana : Amaranths: pumpkins : mushrooms : carrots =40.84:40.84:9.24:3.76:5.34 was extruded at different moisture content (10–20%) and barrel temperature (100-180°C) and the effect on product responses; reconstitution potential, vitamin A retention, vitamin C, total fat among other parameters were investigated at constant screw speed (45Hz) and feed rate (50 Hz) to produce an instant banana-vegetables soup. The optimum extrusion temperature and moisture were 123.3oC and 10.122%, respectively. The optimal product had a mixture formulation of 60% extruded flour and 50% vegetable flour with chicken level at 16.6%. The overall acceptability score, fiber content, fat content, ash content, vitamin C and vitamin A values of the optimum flour were 7.1, 6.8%, 11.2%, 4.92%, 19.4 g/100 g and 1.21 mg/100 g, respectively.