bluuebunny/crossref_metadata_2025 huggingface dataset:
Necesidades formativas en competencia digital y valores en la educación de maestros y pedagogos en formación inicial
Authors:   Facultad de Ciencias de la Educación. Universidad de Sevilla., Corujo Vélez Mª del Carmen , Hervás Gómez Carlos ,   Facultad de Ciencias de la Educación. Universidad de Sevilla., Rodríguez Gallego Margarita ,   Facultad de Ciencias de la Educación. Universidad de Sevilla
Published: April 2021

La formación competencial gana fuerza en todas las materias del currículum y por ende adquiere cada vez más importancia el desarrollo de la competencia digital. Este marco común de referencia debe permitir la acreditación de todos los profesionales de la educación y para ello es preciso desarrollar planes de formación inicial y permanente coherentes con una propuesta de indicadores evaluables. La muestra ha estado formada por 451 estudiantes de los grados de Educación Infantil, Primaria y Pedagogía. Los objetivos en los que se ha centrado la investigación han sido: analizar las necesidades formativas de los estudiantes, de la Facultad de Ciencias de la Educación de la Universidad de Sevilla, sobre seguridad digital; describir el uso y seguridad de los medios digitales y garantía de los derechos fundamentales en Internet y describir la situación actual presentada por los estudiantes en diferentes dimensiones sobre seguridad digital. El diseño de investigación empleado ha sido exploratorio y no experimental (ex post facto). Los resultados de este estudio justifican la necesidad de un mayor análisis del tema y la consolidación de modelos de usuario amplios y robustos, para los futuros profesionales de la enseñanza.
DATA ENVELOPMENT ANALYSIS (DEA) APPROACH FOR ASSESSING TECHNICAL, ECONOMIC AND SCALE EFFICIENCY OF BROILER FARMS
Authors: Hassan Fardos A.M.
Published: April 2021

This study was surveyed and evaluated technical, economic and scale efficiency of broiler farms in Egypt using DEA technique. So as to accomplish the specified aim, stratified random sampling technique was utilized to gather information from 150 broiler farms. The results showed that mean technical efficiencies of broiler farms were 0.915 and 0.985 under constant returns to scale (CRS) and variable returns to scale (VRS) respectively, implying that on average the farms could reduce input utilization by 8.5% and 1.5% for production level of output to be technically efficient. Notably, 48.7% of the farms were estimated fully technical efficient under VRS-model. The mean allocative and economic efficiency of the farms were assessed as 0.941 and 0.918 respectively, with only 2% of the farms were fully allocative and economic efficient. Furthermore, the average scale efficiency was 0.929 with the majority of broiler farms (82%) were operating with increasing returns to scale. The estimated Tobit regression showed that farmer's age, education, experience, access to extension services, and level of training were the most significant variables contributing to the disparities in efficiency of broiler farms. Such results are useful for extension workers and policy makers so as to guide policies towards expanding efficiency.
ANTIOXIDANT, ANTIBACTERIAL AND ANTIBIOFILM POTENTIALS OF ANISE (Pimpinella anisum) SEEDS EXTRACTED ESSENTIAL OILS
Authors: Al- wendawi SH. A. , Gharb L. A. , Al ghrery R. S.
Published: April 2021

Anise (Pimpinella anisum) is an annual herbaceous flowering plant, its widely used as spices, flavoring agent and fragrance. Anise seeds and its essential oils (EOs) has been used widely in the recipes of folk medicine in the Arab region, including Iraq. Therefore, the goal of this work was to extract and define the chemical compositions of aniseeds EOs, and study its antioxidant, antibacterial, and antibiofilm potentials. Aniseed EOs were extracted by hydro-distillation technique using Clevenger apparatus. Twenty-five distinct compounds have been recognized by Gas chromatographic–Mass spectral (GC-Mas) analysis, the major constituents were anisole (87.99%) followed by estragole (3.01%), and all other components were presented in less than 2%. The aniseed EOs showed potent antioxidant activity for scavenging of 2,2 diphenyl - 1-picrylhydrazyl (DPPH) in concentrations-dependent manner, the highest antioxidant (84.9±0.267%) was recorded at 10000 ppm. Antibacterial activity regards to minimum inhibitory concentration (MIC) against burn wounds isolated Pseudomonas aeruginosa were of the rang 4000-7000ppm. Aniseed EOs revealed excellent antibiofilm activity against P. aeruginosa biofilms formation with reduction percentage ranged from 26 - 86.41% in co-treatment assay, while the inhibition potentials for pre-developed biofilm decreased significantly (P<0.05) by 100% for the majority of P. aeruginosa candidate isolates.
PRODUCTION RISK ANALYSIS OF FISH FARMING PROJECTS IN FISH PONDS AND FLOATING CAGES A CASE STUDY IN DIYALA GOVERNORATE
Authors: Alobaidy E . A. , Jbara O. K.
Published: April 2021

This research was aimed to study the problems related to fish farming and the risks that they face.  Diyala Governorate was chosen as an applied model for measuring risk facing fish farmers. Research data were collected according to the random sample method, which included (30%) of all fish farming projects in Diyala Governorate. This sample has included 28% of the total fish farming projects in fish ponds and (31.5%) of the total Fish farming projects in cages through a questionnaire prepared for this purpose. The study focused on analyzing the behavior of fish farmers of the research sample towards risks by adopting a safety model in the form of the risk avoidance criterion (K(s)(.The production functions for fish farming projects in fish ponds and floating cages were estimated, and these functions were estimated by the absence of dummy variables (educational level, years of experience) and with their presence, as well as estimating the risk functions of fish farming projects in fish ponds and floating cages. The results showed that the percent of fish farmers who prefer to take risks in fish ponds (25%) and in floating cages (33.3%), and that the percent of fish farmers who prefer moderate risk (natural or medium) were about (53%) in the ponds and the proportion (66.7%) in Cages, while the fish farmers who avoid risks, they constitute (22%) in ponds and (0%) in cages, from which we conclude that fish farmers in floating cages prefer a greater risk than fish farmers in fish ponds, also the results of the risk function for farming projects  in fish ponds and floating cages revealed that dummy variables (educational level, years of experience) have a negative relationship with production risks, which means that the improvement of the educational level and the increment of experience years contributes to a decrease in production risks.
OPTIMAL RATIO OF MALE AND SEXUAL FEMALE IN THE MATING OF MOINA MACROCOPA (CRUSTACEA, MONIDAE)
Authors: Mubarak A. S. , Jusadi D. , Junior M. Z. , Suprayudi M. A.
Published: April 2021

Moina  macrocopa is a natural feed that can be cultured to producing ephippia as a bioproduct for fish and shrimp larvae feed. The number of males in the population affects the quality and quantity of ephippia produced.  This study was conducted with the purpose of examining the female age in M. macrocopa mating and examining the ratio male-female M. macrocopa in the mating on the quantity and quality of ephippia produced.  The treatment in this research was the ratio male-female sex of   1:30,   3:30,  5:30,  7: 30. 9:30., 12:30,  15: 30.   Male and female sexual offspring  M macrocopa were produced from cultured using a combination of induction factors such as density, feed concentration, kairomones and dissolved oxygen. male and female offspring produced were cultured with a density of 1000 ind/ L.  This mating culture was using a container with a volume of water of 2 ml per individual. The results of this study were indicated that mating M. macrocopa using 70-hour old sexual females resulted in the highest ephippia production.  Mating M. macrocopa with a sex ratio of  9:30  (male and female sexual)  ware resulted in ephippia containing two eggs of 100%, with ephippia hatching degree of 35.4- 38.3%.
ADDING DIFFERENT LEVELS OF TURMERIC POWDER AND CURCUMIN IN THE DIET ON BROILER PERFORMANCE, CARCASS TRAITS, IMMUNITY AND GUT MORPHOLOGY OF BROILER CHICKEN UNDER NORMAL AND HEAT STRESS CONDITION
Authors: Mustafa M. M. , Karadas F. , Tayeb I. T.
Published: April 2021

This study was conducted to estimate the effect of adding different levels of turmeric powder and curcumin on broiler performance, carcass traits, and immunity response and jejunum histology. A total of 750 Ross day old chicks obtained from a local hatchery and distributed into two rearing conditions (normal and heat stress condition) with five treatments 3 replicate for each one had (25 chicks). Dietary supplements of turmeric powder and curcumin significantly (P ≤ 0.05) improved performance under normal and heat stress conditions. Moreover, treatments significantly (P ≤ 0.05) increased the total titter antibody against Newcastle and infectious bursal disease compared to control. Concerning histology of jejunum treatments significantly (P≤0.01) improved jejunum histology. Regarding the effect of rearing condition heat stress conditions significantly (P ≤ 0.01) decreased performance compared to normal rearing condition. Small intestine percent from live body weight significantly (P ≤ 0.01) decreased compared to normal rearing conditions. Moreover, heat stress significantly (P≤0.01) affected the total antibody titer against Newcastle disease and infectious bursal disease. Jejunum histology significantly (P ≤ 0.01) affected by rearing conditions.
CLINICAL PROFILE AND DEMOGRAPHIC FEATURES OF PATIENTS WITH JUVENILE ONSET OPEN ANGLE GLAUCOMA
Authors: Roy Sudeshna , Ghanta Debalina
Published: April 2021

Introduction- Juvenile open angle glaucoma (JOAG) is a rare form of glaucoma that differs from adult-onset primary open angle glaucoma (POAG) in its age of onset and often in the magnitude of IOP(intraocular pressure) elevation. Objective-To document the demographic characteristics, clinical features and treatment outcome of patients diagnosed with JOAG. Materials And Methods- A non-comparative retrospective study of patients diagnosed with JOAG in the eye clinic of a tertiary eye care centre was done. Data was taken from clinical records and it included the basic demographic features and the clinical characteristics of the patients and the outcome of their treatment. Results- 30 patients were reviewed of which 9 (29.97%) patients were aged 20 years and below. The mean age was 26.2+/- 5.0 years. 12 (39.96 %) had a visual acuity of 6/18 in the better eye at the time of presentation. 8 (26.64%) patients defaulted within six months of presentation. The mean IOPfor the 22 patients who were followed up on treatment, was 16.35+/- 5.0 mmHg. Conclusion- In this study, most patients with JOAG presented an advance form of disease. Early detection through school eye health program and community-based screening would help in reducing the scourge arising from JOAG.
Reliability modelling and maintenance policy optimization for a repairable parallel system
Authors: Ahmadi Reza , Wu Shaomin , Sobhani Amirhossein
Published: April 2021

This paper proposes an integrated approach for reliability modelling and maintenance scheduling of repairable parallel systems subject to hidden failures. The system consists of heterogeneous redundant subsystems whose failures are revealed only by inspections. Inspections at periodic times reveal the components state and repair actions are decided by the excursion of a basic state process describing the total number of failed components in each subsystem. Using the standard renewal arguments, the paper aims at minimizing the average cost rate by the joint determination of the optimal inspection interval, the partial repair threshold and the preventive replacement threshold. We illustrate the procedure for the case as the components' lifetimes conform to the Weibull distribution. Numerical examples are used to illustrate the proposed model and the response of the optimal solutions to the model's parameters.
STUDENTS’ LANGUAGE LEARNING STRATEGIES DIFFERENCE IN AN INDONESIAN EFL SINGLE-GENDER CLASSROOM
Authors: Kurnia Asep
Published: April 2021

AbstractThe issue of single-gender classroom is identified as the preference classroom system in education around the world. This classroom system is adopted due to female and male students’ performance in the learning process including English subject. In Indonesia, the issue of single-gender classroom is not publically implemented, co-educational classroom is preferred. However, some cities are promoted the single-gender classroom, specifically the cities which promote the religious education such as in Tasikmalaya, West Java, Indonesia. Due to the pre-observation in a boarding school implemented the single-gender classroom, there is an exact different between female and male achievement in English classes. There are some factors affect the students’ achievement. Learning strategies is one of the most important thing influent the achievement. Therefore, the main focus of the research is observing different students preference in learning strategies. Questionnaire and interview are formed as data collecting techniques. Consequently, there was an exact different between female and male students in using language learning strategies. Female students are common in performing metacognitive learning strategy. While, male students are prefer in implementing cognitive learning strategy. In the comparison, female students use the learning strategies more often than the male student, specifically in metacognitive and social learning strategies.Keywords: Learning strategies, single-gender classroom, Female and male differences, Indonesian EFL classroom, Students’ achievement factors.
ENGLISH ZONE (EZO): A FUN ACTIVITY IN LEARNING ENGLISH SPEAKING SKILL FOR YOUNG LEARNERS
Authors: Septiyana Linda , Widiarti Puri , Sari Tika Purnama , Kasih Eka Nur , Mukaromah Hijjriah Al
Published: April 2021

This research aims to describe the implementation of English Zone (EZo) activities in learning English speaking skills for young learners. Employing qualitative descriptive study, this research included observation of teaching and learning process, and interview that was administered to 10 students from Kampung Sawah, West Hadimulyo. Ten meetings were observed thoroughly. Each observation took place in English language classroom every Sunday at Al-Fatimah Mosque. This research presented the implementation of English Zone (EZo) to young learners and students’ responses to the implementation of EZo. The findings illuminated the powerful ways in which EZo was able to improve students’ speaking skill. The students were having fun in the classroom which made them actively participate IN speaking practice with their friends or teachers. The findings further highlighted that EZo showed a good result in improving students’ confidence during their speaking practice. EZo helped them to speak more and decreased hesitation. They felt more relaxed to speak.Keywords : English zone, speaking skill, young learners, activity
Karakteristik Peternakan Kambing Di Kawasan Perbukitan Menoreh: Studi Kasus Di Kecamatan Samigaluh Kabupaten Kulon Progo
Authors: Prabowo Teguh Ari , Widodo Arief Setyo
Published: April 2021

Kecamatan Samigaluh, Kabupaten Kulon Progo merupakan salah satu kecamatan yang terletak di pegunungan Menoreh. Kawasan ini merupakan salah satu penunjang kawasan super priotas pembangunan Candi Borobudur. Kawasan ini memiliki potensi Sumber Daya Alam melimpah salah satunya ialah potensi peternakan. Tujuan penelitian ini adalah untuk mengetahui karakteristik potensi peternakan di wilayah pegunungan Menoreh guna untuk mengetahui data awal gambaran peternakan yang ada di kawasan tersebut sehingga manfaatnya kedepan dapat menjadi salah satu informasi untuk mengembangkan peternakan di kawasan tersebut. Metode penelitian ini dilakukan secara deskriptif dengan cara melakukan pengamatan langsung di lapangan dan mewawancarai 29 peternak kambing di kawasan pegunungan Menoreh. Hasil penilitian menunjukkan bahwa sistem pemeliharaan ternak kambing di kawasan tersebut dilakukan secara konvensional, belum ada banyak teknologi peternakan yang digunakan dalam proses beternak. Sumber pakan berupa hijauan yang mengandalkan tanaman sekitar lading dan hutan. Tingkat pendidikan peternak sebagian besar tamatan SD dengan jumlah kepemilikan ternak per KK sebanyak 2-6 ekor. Dalam proses pemeliharaannya, penyakit yang sering timbul ialah cacingan, diare dan bloat
Bobot Bursa Fabrisius, Limfa dan Hati Itik Cihateup yang Diberi Isotonik Mengandung Ekstrak Seledri dan Jeruk Nipis dalam Pemeliharaan Kering
Authors: Septian Gany Frizky Prasetia , Frasiska Nurul , Rahayu Novia
Published: April 2021

Penelitian ini bertujuan untuk mengetahui pengaruh pemberian isotonik alami terhadap bobot relatif bursa fabricius, limfa dan hati Itik Cihateup dalam pemeliharaan kering. Penelitian ini menggunakan metode eksperimental in vivo dan Rancangan Acak Lengkap (RAL) dengan perlakuan yang terdiri dari 4 perlakuan dan 5 ulangan. Perlakuan pada penelitian ini adalah penambahan ekstrak selediri sebanyak 25mg, 50mg dan 75mg juga penambahan sari jeruk nipis sebanyak 2%, 3%, dan 4%. Hasil penelitian berdasarkan ANAVA menunjukkan bahwa perlakuan tidak berpengaruh signifikan terhadap bobot bursa fabricius, limfa dan hati Itik Cihateup
CITIZENS’ SATISFACTION ON ECONOMIC AND INVESTMENT PROMOTION SERVICES OF A COASTAL TOWN IN CAMARINES SUR, PHILIPPINES
Authors: Nora E. Bacares
Published: April 2021

This study assessed the people’s satisfaction on the Economic and Investment Promotion Services of a Local Government Unit (LGU) in Camarines Sur, Philippines utilizing the Citizen Satisfaction Index System (CSIS) initiated by the Department of the Interior of Local Government (DILG). Particularly, it determined the awareness, availment, and satisfaction of the citizens on Economic and Investment Promotion Services provided by the LGU. The study used a mix of quantitative and qualitative research methods through face-to-face interviews with 150 actual residents randomly sampled from the barangays with male and female equal distribution of the target LGU. Samples were drawn from barangays where most people resided. Barangays with larger shares of the population had more spots and respondents in the sample. The latest 2015 census data on population and housing was the basis for allocating the spots among the barangays according to population share. The multi-stage probability sampling was employed to give all citizens, 18 years old and above, an equal chance to be selected as a participant (CSIS, 2019). The residents of this coastal, 4th class municipality had a low level of satisfaction but high in need for action on Economic and Investment Promotion. Their recommendations focused on the need for livelihood trainings on the production of local goods as well as conduct of promotional activities of these locally-produced goods. With 67.33% of the household-respondents who are beneficiaries of the Pantawid Pamilyang Pilipino Program (4Ps), another recommendation centered on giving attention to the conduct of promotional campaigns of the local tourist attractions because the citizens believe that tourism activities could help create local employment for them to improve their economic condition.
KEYWORDS: Citizen Satisfaction, Local Government Unit, Basic Services, Economic and Investment Promotion
Memahami Gangguan Depresi Mayor (Mayor Depressive Disorder): Pendekatan Psikoneuroimunologi, Kajian Sitokin, Trypthopan dan HPA-Aksis
Authors:   Jurusan Keperawatan, Poltekkes Kemenkes Kendari, Indonesia, Rosyanti Lilin , Hadi Indriono ,   Jurusan Keperawatan, Poltekkes Kemenkes Kendari, Indonesia, Wijayati Fitri
Published: April 2021

Buku yang berjudul Memahami Gangguan Depresi Mayor (Mayor Depressive Disorder): Pendekatan Psikoneuroimunologi, Kajian Sitokin, Trypthopan dan HPA-Aksis diharapkan dapat membawa manfaat, khususnya dalam lingkup bidang ilmu medis dan keperawatan, semua masyarakat, keluarga dan pasien dengan gangguan depresi.
Bounds for some entropies and special functions
Authors:   TECHNICAL UNIVERSITY OF CLUJ-NAPOCA DEPARTMENT OF MATHEMATICS MEMORANDUMULUI 28, 400114 CLUJ-NAPOCA, ROMANIA E-mail address: ellena sontica@yahoo.com, BARAR ADINA , MOCANU GABRIELA RALUCA ,   ROMANIAN ACADEMY, CLUJ-NAPOCA BRANCH ASTRONOMICAL INSTITUTE CIRES¸ILOR 19, 400487 CLUJ-NAPOCA, ROMANIA E-mail address: gabriela.mocanu@academia-cj.ro, RASA IOAN ,   TECHNICAL UNIVERSITY OF CLUJ-NAPOCA DEPARTMENT OF MATHEMATICS MEMORANDUMULUI 28, 400114 CLUJ-NAPOCA, ROMANIA  E-mail address: ioan.rasa@math.utcluj.ro
Published: April 2021

We consider a family of probability distributions depending on a real parameter and including the binomial, Poisson and negative binomial distributions. The corresponding index of coincidence satisfies a Heun differential equation and is a logarithmically convex function. Combining these facts we get bounds for the index of coincidence, and consequently for Renyi and Tsallis entropies of order 2.
On some parameters in the space of regulated functions and their applications
Authors:   INSTITUTE OF MATHEMATICS FACULTY OF ELECTRICAL ENGINEERING POZNAN UNIVERSITY OF TECHNOLOGY PIOTROWO 3A, 60–965 POZNAN, POLAND E-mail address: kinga.cichon@put.poznan.pl, CICHON KINGA , CICHON MIECZYSŁAW ,   FACULTY OF MATHEMATICS AND COMPUTER SCIENCE A. MICKIEWICZ UNIVERSITY UMULTOWSKA 87 61-614 POZNAN, POLAND E-mail address: mcichon@amu.edu.pl, METWALI MOHAMED M. A. ,   DEPARTMENT OF MATHEMATICS FACULTY OF SCIENCES DAMANHOUR UNIVERSITY, EGYPT E-mail address: m.metwali@yahoo.com
Published: April 2021

In this paper, we study a class of discontinuous functions being a space of solutions for some differential and integral equations. We investigate functions having finite one-sided limits, i.e. regulated functions. In the space of such functions, we introduce some new concepts like a modulus of equi-regularity or a measure of noncompactness, allowing us to unify the proofs for the results about existence for both continuous and discontinuous solutions. An example of applications for quadratic integral equations, essentially improving earlier ones, completes the paper.
A new modification of Durrmeyer type mixed hybrid operators
Authors:   DEPARTMENT OF MATHEMATICS CENTRAL UNIVERSITY OF HARYANA HARYANA-123029, INDIA E-mail address: rachitkajla47@gmail.com, KAJLA ARUN , ACAR TUNCER ,   SELCUK UNIVERSITY FACULTY OF SCIENCE DEPARTMENT OF MATHEMATICS SELCUKLU, KONYA, 42003, TURKEY E-mail address: tunceracar@ymail.com
Published: April 2021

In 2008 V. Mihes¸an constructed a general class of linear positive operators generalizing the Szasz operators. In ´ this article, a Durrmeyer variant of these operators is introduced which is a method to approximate the Lebesgue integrable functions. First, we derive some indispensable auxiliary results in the second section. We present a quantitative Voronovskaja type theorem, local approximation theorem by means of second order modulus of continuity and weighted approximation for these operators. The rate of convergence for differential functions whose derivatives are of bounded variation is also obtained.
Best proximity point theorems for G-proximal weak contractions in complete metric spaces endowed with graphs
Authors:   CENTER OF EXCELLENCE IN MATHEMATICS AND APPLIED MATHEMATICS DEPARTMENT OF MATHEMATICS FACULTY OF SCIENCE CHIANG MAI UNIVERSITY CHIANG MAI 50200 THAILAND E-mail address: chalongchai1001@gmail.com, KLANARONG CHALONGCHAI , SUANTAI SUTHEP ,   CENTER OF EXCELLENCE IN MATHEMATICS AND APPLIED MATHEMATICS DEPARTMENT OF MATHEMATICS FACULTY OF SCIENCE CHIANG MAI UNIVERSITY CHIANG MAI 50200 THAILAND E-mail address: suthep.s@cmu.ac.th
Published: April 2021

In this paper, the existence of best proximity point theorems for two new types of nonlinear non-self mappings in a complete metric space endowed with a directed graph are established. Our main results extend and generalize many known results in the literatures. As a special case of the main results, the best proximity point theorems on partially ordered sets are obtained.
A new class of metric f-manifolds
Authors:   DEPARTAMENTO DE ECONOMIA METODOS CUANTITATIVOS E HISTORIA DE LA ECONOMIA UNIVERSIDAD PABLO DE OLAVIDE, CTRA. DE UTRERA, KM. 1 41013 SEVILLA, SPAIN E-mail address: psalerue@upo.es, ALEGRE PABLO , FERNANDEZ LUIS M. ,   DEPARTAMENTO DE GEOMETRIA Y TOPOLOGIA FACULTAD DE MATEMATICAS UNIVERSIDAD DE SEVILLA C./ TARFIA, S.N. 41012 SEVILLA, SPAIN. E-mail address: lmfer@us.es, PRIETO-MARTIN ALICIA ,   DEPARTAMENTO DE GEOMETRIA Y TOPOLOGIA FACULTAD DE MATEMATICAS UNIVERSIDAD DE SEVILLA C./ TARFIA, S.N. 41012 SEVILLA, SPAIN E-mail address: aliciaprieto@us.es
Published: April 2021

We introduce a new general class of metric f-manifolds which we call (almost) trans-S-manifolds and includes S-manifolds, C-manifolds, s-th Sasakian manifolds and generalized Kenmotsu manifolds studied previously. We prove their main properties and we present many examples which justify their study.
Extended convergence of Gauss-Newton’s method and uniqueness of the solution
Authors:   DEPARTMENT OF MATHEMATICAL SCIENCES CAMERON UNIVERSITY LAWTON, OK 73505, USA E-mail address: iargyros@cameron.edu, ARGYROS IOANNIS K. , CHO YEOL JE ,   DEPARTMENT OF MATHEMATICS EDUCATION AND THE RINS GYEONGSANG NATIONAL UNIVERSITY JINJU 660-701, KOREA E-mail address: yjcho@gnu.ac.kr, GEORGE SANTHOSH ,   DEPARTMENT OF MATHEMATICAL AND COMPUTATIONAL SCIENCES NIT KARNATAKA, INDIA-575 025 E-mail address: sgeorge@nitk.ac.in
Published: April 2021

The aim of this paper is to extend the applicability of the Gauss-Newton’s method for solving nonlinear least squares problems using our new idea of restricted convergence domains. The new technique uses tighter Lipschitz functions than in earlier papers leading to a tighter ball convergence analysis.
On weighted Strand’s iteration
Authors:   OVIDIUS UNIVERSITY OF CONSTANTA FACULTY OF MATHEMATICS AND INFORMATICS BD. MAMAIA 124, 900527, CONSTANTA, ROMANIA E-mail address: doina.carp@gmail.com, CARP D. , POPA C. ,   OVIDIUS UNIVERSITY OF CONSTANTA FACULTY OF MATHEMATICS AND INFORMATICS BD. MAMAIA 124, 900527, CONSTANTA, ROMANIA E-mail address: cpopa@univ-ovidius.ro, PRECLIK T. ,   FRIEDRICH-ALEXANDER UNIVERSITAT ERLANGEN-NURNBERG INFORMATIK 10 - SYSTEM SIMULATION CAUERSTRASSE 11, 91058, ERLANGEN, GERMANY E-mail address: tobias.preclik@fau.de, RUDE U. ,   FRIEDRICH-ALEXANDER UNIVERSITAT ERLANGEN-NURNBERG INFORMATIK 10 - SYSTEM SIMULATION CAUERSTRASSE 11, 91058, ERLANGEN, GERMANY E-mail address: ulrich.ruede@fau.de
Published: April 2021

In this paper we present a generalization of Strand’s iterative method for numerical approximation of the weighted minimal norm solution of a linear least squares problem. We prove convergence of the extended algorithm, and show that previous iterative algorithms proposed by L. Landweber, J. D. Riley and G. H. Golub are particular cases of it.
Existence of solutions of implicit integral equations via Z-contraction
Authors:   DEPARTMENT OF MATHEMATICS VISVESVARAYA NATIONAL INSTITUTE OF TECHNOLOGY NAGPUR, 440010 INDIA E-mail address: pradip.patle12@gmail.com, PATLE PRADIP R. , PATEL DEEPESH KUMAR ,   DEPARTMENT OF MATHEMATICS VISVESVARAYA NATIONAL INSTITUTE OF TECHNOLOGY NAGPUR, 440010 INDIA E-mail address: deepesh456@gmail.com
Published: April 2021

The main focus of this work is to assure that the sum of a compact operator with a Z-contraction admits a fixed point. The concept of condensing mapping (in the sense of Hausdorff non-compactness measure) is used to establish the concerned result which generalizes some of the existing state-of-art in the literature. Presented result is used to verify the actuality of solutions of implicit integral equations.
Fixed point theorems for contractions in semicomplete semimetric spaces
Authors:   DEPARTMENT OF BASIC SCIENCES KYUSHU INSTITUTE OF TECHNOLOGY FACULTY OF ENGINEERING, TOBATA, KITAKYUSHU 804-8550, JAPAN E-mail address: suzuki-t@mns.kyutech.ac.jp, SUZUKI TOMONARI
Published: April 2021

We introduce the concept of semicompleteness on semimetric space, which is weaker than completeness. We prove fixed point theorems for contractions in semicomplete semimetric spaces. Also, we generalize JachymskiMatkowski-Swia¸ tkowski’s fixed point theorem in semimetric spaces.
Neurofilamentų vaidmuo klinikinėje praktikoje išsėtine skleroze sergantiems pacientams
Authors: Malciūtė Miglė , Natkevičius Vincentas , Godelienė Raminta
Published: April 2021

Išsėtinė sklerozė – tai centrinę nervų sistemą demielinizuojanti liga, dažniausiai paveikianti jauno amžiaus žmones. Nors šios ligos diagnostika labai patobulėjo, tačiau vis dar bandoma atrasti priemonių, kurios galėtų prognozuoti išsėtinės sklerozės paūmėjimus arba net ilgalaikes ligos baigtis. Atlikta daug tyrimų, rodančių, jog neurofilamentai galėtų tapti išsėtinės sklerozės ligos prognostiniu biožymeniu. Neurofilamentai – tai neurono citoskeleto dalis, kuri yra specifinė neuronui ir, esant aksono pažeidimui, patenka į smegenų skystį ir kraują. Matuoti neurofilamentų koncentraciją būtų naudinga ne tik išsėtinės sklerozės paūmėjimui diagnozuoti ir ligos eigai prognozuoti, bet ir gydymo veiksmingumui nustatyti. Neurofilamentai galėtų būti ir kaip išsėtinės sklerozės prodrominis žymuo, kuris, dar nepasireiškus ligos klinikai, rodytų paciento riziką susirgti išsėtine skleroze. Neurofilamentai suteikia naujos informacijos apie išsėtinės sklerozės neuropatologinius procesus, taip papildantys magnetinio rezonanso tomografijos tyrimą. Apibendrinant galima teigti, kad neurofilamentai yra daug žadantis išsėtinės sklerozės biožymuo, kuris galėtų būti naudojamas specialisto klinikinėje praktikoje.
Negonorėjiniai uretritai: etiopatogenezė, klinikos, diagnostikos ir gydymo savitumai
Authors: Žilinskienė Simona , Petkevičius Arūnas
Published: April 2021

Negonorėjinis uretritas (NGU) yra dažniausia vyrų lytinių takų liga. Mokslinių tyrimų rezultatais pagrįsta, kad pagrindiniai sukėlėjai yra Chlamydia trachomatis, Mycoplasma genitalium, Ureaplasma urealyticum. Įdiegus pažangius molekulinės diagnostikos metodus, dažnai šlaplės mikrofloroje randama Mycoplasma hominis, Ureaplasma parvum, Gardnerella vaginalis ir kitų saprofitinių mikroorganizmų, kurių svarba uretritų etiopatogenezėje yra prieštaringa ir iki galo neišaiškinta. Negydytas vyrų uretritas gali sukelti sutrikimų, susijusių su reprodukcine bei lytine funkcija, ir yra viena iš pagrindinių nevaisingumo priežasčių. Šio straipsnio tikslas yra, apžvelgus mokslinę literatūrą, išanalizuoti vyrų NGU epidemiologiją, priežastis, diagnostikos ir gydymo galimybes.
Žarnyno mikrobiotos reikšmė funkciniams kūdikių virškinamojo trakto sutrikimams
Authors: Kučinskienė Rūta
Published: April 2021

Kūdikio žarnyno mikrobiotos formavimasis yra sudėtingas ir dinamiškas procesas, kuriam įtakos turi gimdymo būdas, gestacinis amžius, genetika ir ypač mityba. Mikrobiota sąlygoja imuninės, metabolinės, centrinės nervų sistemos vystymąsi ir brendimą. Žarnyno bakterijų sudėtis turi įtakos ir funkciniams mažų vaikų virškinamojo trakto (VT) sutrikimams. Esant disbiozei, kūdikius dažniau vargina regurgitacija, pilvo diegliai ir funkcinis vidurių užkietėjimas. Mitybos korekcija su maisto papildymu probiotikais gali padėti sumažinti kūdikių funkcinių virškinimo sistemos ligų simptomus.
Postnatal Depression: Frequency, Demographic Characteristics and Risk Factors
Authors: Dawar Sher Ayub , Niaz Hina , Khan Asaf Alam , Ayub Zahida
Published: April 2021

OBJECTIVES:

The iobjective iof ithe istudy iwas ito iestimate ithe iprevalence iof postpartum idepression iand iits iassociated irisk ifactors iamong imothers.

 

METHODOLOGY:

This icross-sectional istudy iwas icarried iout iin ithe iDepartment of iObstetrics i& iGynecology,iand iDepartment iof iPsychiatry, iKhyber Teaching Hospital iPeshawar 1st April 2018 till 31st March 2019. iA itotal i750 ipost-natal imothers iwere iscreened irandomly ifor ipostnatal idepression ifor ifirst i1-2 weeks ifollowing idelivery iby iusing iEdinburgh iPostnatal iDepression iScale (EPDS). 680 iaccepted ito iparticipate, i70 irefused ito iparticipate iand i504 ifulfill ithe inclusion icriteria. iA iscore iof i≥13 iwas iconsidered ihaving Ipostpartum depression.

 

RESULTS:

A itotal iof i168 iwomen ihad ian iEPDS iscore i10, iyielding ia icrude prevalence irate iof i34%. iThe iprevalence iof isuicidal iideation iwas i14 iout iof 504 (3%), iamong iwhich i11 i(79%) ihad iEPDS iscore iof i10. iWe ifitted multiple ilinear iregression imodels ito ievaluate ithe ipredictors iof ivariables measured ion ithe iEPDS. iThis imodel iwas istatistically isignificant p<0.0001 iin ipredicting ithe itotal iEPDS iscore. iWomen's iemployment istatus, domestic iviolence iand imarital iconflict iwere istatistically isignificant predictors.

 

CONCLUSION:

Thisistudy ireflected ithe ifacts ithat imany iof ithe ipostnatal mothers iof iour icircumstances isuffer ifrom ipostpartum idepression iand ineeds medical iattention. iScreening iof ipostpartum idepression ishould ibe iconsidered as ia iroutine ipart iof ipostpartum icare.

KEYWORDS: IPostpartum IDepression, Risk IFactors, Socio-Demographic IFactors, Pakistan
Comparison of Working Length Determination in Mandibular Single-Rooted Teeth
Authors: Sana Ruqayya , Rehman Farzana , Rehman Farzana , Javaid Rashid
Published: April 2021

OBJECTIVES: The objective of this study was to compare working length calculated with conventional radiographs and an electronic apex locator (IPEX II) during the root canal treatment of mandibular anterior teeth. METHODOLOGY: A cross-sectional study was done in the Department of Operative Dentistry, Sardar Begum Dental Hospital, Peshawar during February and March 2018. A consecutive sampling technique was used for sampling. Only 30 patients fulfilled the inclusion criteria of our study. Detailed medical and dental history was taken. Only patient fulfilling inclusion criteria were enrolled in the study. Data were analyzed using SPSS version 20. RESULTS: The mean age for patients was 45.33±5.16. 33% out of 30 patients (10) were male and 20 were females. The mean working length calculated from radiographs was 22.25±1.29 (min 20.09-max 24.10). The mean working length calculated by the electronic apex locator (IPEX II) was 22.17±1.28 (min 20.00-max 24.07). The mean difference between working length calculated by radiograph and electronic apex locator was -0.084mm, which means the working length determined by radiographs and by electronic apex locator has no difference in mandibular anterior teeth with single canals. CONCLUSION: Both the methods can be used effectively in endodontics for single-rooted mandibular teeth, but if both are used in combinations can lead to an improvement in the working length accuracy, which may significantly reduce the number of radiographs exposure, and increase the success and comfort for endodontic patients. KEYWORDS: Working Length, Apex Locator, Conventional Radiograph
Why students select a medical career? A descriptive study conducted in various private and public sector medical colleges of Pakistan
Authors: Shaheen Bushra , Shaheen Ghazala , Khan Asadullah , Khan Saad Ahmad
Published: April 2021

Objectives: To explore the reasons behind the selection of medical careers by the students and various factors influencing their choice.Materials and Methods: This descriptive questionnaire-based cross-sectional study was conducted in 2017 in six different medical colleges including both private and public sector institutions. Data were analysed with SPSS 21 and Epi Info 7 and conclusions drawn according to the objectives of the study.Results: Out of 164 students, 75% of the students came from an urban background. Female students were more likely to have well-educated mothers than their male peers (OR 3.99, CI: 1.81-8.77, P-value: 0.0007) with no significant difference seen in fathers’ education between students of different types of medical colleges and gender. Service to humanity or financial and social benefits associated with this profession were the main reasons for pursuing the medical career among the students, whereas parents were mostly fascinated by the financial and social benefits of the job. Nearly a fifth of the students had no personal interest in medical studies and profession; they sought admission only because of their parents. About 11 % were regretting their choice of career. Almost half of the students (48%) were not satisfied with the ways of teaching and curriculum. Conclusion: There was no significant difference in the views of private and public sector medical colleges. Upgrading the basic and medical education system and the selection criteria for medical colleges is essential to alleviate location and specialty-based health workforce shortage.
Diagnostic Accuracy of Contrast-Enhanced MRI for Detecting the Malignant Breast Lesions
Authors: Parveen Naila , Butt Rabia Waseem , Niazi Manal , Iqbal Kulsoom , Manzoor Sidra , Abid Aneela
Published: April 2021

Objectives: To determine the accuracy of contrast-enhanced MRI in the diagnosis and detection of breast lesions and their malignant potential by taking the gold standard of histopathology.Materials and Methods: This study was conducted at the Department of Diagnostic Radiology, Pakistan Institute of Medical Sciences (P.I.M.S.) Islamabad. It was undertaken in collaboration with the Department of General Surgery P.I.M.S, Department of Pathology P.I.M.S Islamabad, and HIT Hospital Taxila. The study design was a cross-sectional (Validation) study and the duration of the study was 6 months (from 01-Oct-2016 to 31-Mar-2017). Results: Sample size was calculated by using sensitivity and specificity calculator taking sensitivity 94%1 with a precision of 6%, specificity 85%1 with a precision of 10%, prevalence is 45.9%2, and confidence interval of 95% it comes out to be 92%. Sample collection was made by the technique of Consecutive non-probability sampling.Conclusion: Breast MRI imaging is a modern evolving modality. A gradual increase in diagnostic specificity is achieved with improved software and techniques. More such studies would help develop confidence in this advanced imaging modality for improving patient management and avoiding unnecessary biopsies.
Perinatal Outcome of Twins Delivered Vaginally in a Tertiary Care Hospital
Authors: Zulfiqar Ayesha , Sadaf Maliha , Abbasi Amina , Ashraf Sabeen , Ashraf Omair
Published: April 2021

Objective: To determine the perinatal outcome of first and second twin delivered vaginally in terms of frequency of poor APGAR score and NICU admission in the patient at term in a tertiary care health facility.Introduction: This study aims to improve the perinatal outcome of twin pregnancies through awareness of the need for antenatal care, the recommendation of regular antenatal visits, early recognition of complications, and the presence of neonatal intensive care facilities to improve neonatal outcome by knowing the burden of adverse outcomes in our population.Materials and Methods: This is a descriptive study, conducted at the Department of Obstetrics and Gynaecology at DHQ Hospital, Rawalpindi from January 2019 to June 2019.A total of 91 individuals (female pregnant ladies) who delivered twins (Dichorionic Diamniotic) babies through normal vaginally were selected for descriptive study in the Department of Obstetrics and Gynaecology, DHQ hospital Rawalpindi. All consecutive patients admitted in the labour ward with twin pregnancies were included. Before delivery, the fetal wellbeing of both the twins was evaluated also by ultrasonography. Data collection was done by interview schedule from the patients. Data were analyzed using descriptive statistics using SPSS version 17. For all the quantitative variables like age, gestational age and intertwine interval in seconds.Results: Out of 6278 deliveries during the study period, 91 twin births gave a frequency of 15.16/1000 births. Patients' mean age was 30.14+2.64 years, and mean gestational age was 37.47+0.72 weeks. The mean inter twin delivery interval (mins) in the study was 23.74+4.75. Perinatal outcome of first and second twin in terms of frequency of poor APGAR score and NICU admission in a patient at term was 09 (9.9%) and 27 (29.7%), (p<0.001) respectively.Conclusion: The study concludes that there was a high risk of perinatal outcomes in the second twin as compared to the first twin delivered vaginally. Poor Apgar score and neonatal intensive care admission were more so for the second twin.
Comparison of Bupivacaine and Dexmedetomidine versus Bupivacaine Alone in Transversus Abdominis Plane Block for Post-Operative Analgesia
Authors: Hussain Aftab , Hussain Akhtar , Feroze Rehana , Akram Muhammad , Saleem Muhammad Asif , Ali Ahsan
Published: April 2021

Objective: To study the effects of adding dexmedetomidine to bupivacaine in transverses abdominis plane block in comparison with using bupivacaine alone. Materials and Methods: This was a prospective comparative study that was conducted in the Anaesthesia Department, CMH, Lahore over a period of six months from 1st June 2020 to 30th November 2020. Fifty patients of the American Society of Anesthesiologist Class I and II with an age range between 40 to 60 years were divided into two groups. Group B received 20ml of 0.25% bupivacaine with 2ml of normal saline on each side in the transversus abdominis plane block while group BD was given 20ml of 0.25% bupivacaine with dexmedetomidine 0.5mcg/kg on each side (in a volume of 2ml). Post-operative pain was assessed with a visual analogue scale. Rescue analgesia was given when a score of greater than 3 was observed using this scale. Time to first rescue analgesia was noted. Total opioid consumption in the first 24 hours was also recorded. Patients were observed for postoperative hypotension and bradycardia.Results: The mean-time for the first dose of analgesia for group B and BD was 302.92 ± 24.01 and 419.28 ± 31.97 minutes respectively with a p-value of 0.001. The mean of the total consumption of opioids in 24 hours post-operatively for group B and BD was 14.20±2.36 and 10.40±1.38 mg respectively with a p-value of 0.001. Hypotension was not seen in any patient in either group. Only one patient developed bradycardia and he belonged to group BD. P-value was 0.327.Conclusion: The addition of dexmedetomidine to bupivacaine for transversus abdominis plane block for postoperative analgesia significantly prolongs the duration of analgesia and reduces the postoperative opioid requirements.
Antiulcerogenic Activity of Vitamin E on Gastric Ulcers produced by Indomethacin
Authors: Yousaf Ayesha , Saeed Ifra , Hassan Tehzeeb Ul , Intisar Rana Fahd , Shiekh Mohammad Amin
Published: April 2021

Objective: To study the morphological and histological effects of vitamin E on gastric lesions produced by indomethacin.Materials and Methods: This was an animal interventional study, 48 adult healthy albino mice were selected and were split into four groups A, B, C and D. Number of animals in each group was 12. Group A was categorized as control. Evion 400mg/kg was administered to Group B. Indocid 25mg/kg was given to group C. Indocid and Evion both (25mg/kg &400 mg/kg respectively) were administered to Group D. In all group, six animals were selected and treated for three days and rest for eight days with calculated doses of drugs. Mice were sacrificed and dissection was done 24 hours after the last dose. The stomach was identified, washed, and observed under dissecting microscope to study the number and shape of ulcers. The dimension of ulcers was measured under a compound microscope.Results: No ulcers were seen in groups A and B. 35 and 10 ulcers were observed in groups C and D respectively. The mean number of ulcers in groups C and D was statistically significant (p-value=0.000). In comparison to group D, Pindot, linear, Irregular, and punched-out ulcers were more prevalent in group C and were statistically significant (p-value < 0.05). The mean linear dimension of ulcers in group C was much greater than in group D. The mean dimension of ulcers in group C1 and C2 was 262.50µm and 232.5µm respectively. Whereas in group D1 and D2 given both Indocid and vitamin E the dimensions were 56.5µm and 50µm.Conclusion: Vitamin E has an anti-ulcerogenic effect on stomach mucosa by reducing the number and dimension of ulcers.
Yüzme Sporunda Çıkış aşaması: Biyomekaniksel Yaklaşım
Authors: ATLI Ayşegül , KULUNKOGLU Bahar
Published: April 2021

Yüzme sporunda santisaniye gibi saniyeden daha küçük zaman aralığında performans değerlendirilerek yüzücünün en kısa sürede mesafeyi tamamlaması amaçlanmaktadır. Çıkış, stil yüzme, dönme ve bitirme aşamalarında; çıkış aşamasının performansı diğer aşamalara etki ederek sporcunun skorunda önemli değişikliklere neden olmaktadır. Özellikle kısa mesafeli olimpiyat yarışlarındaki sporcuların analizlerinde ilk 15 m’lik çıkış aşamasının skoru büyük oranda etkilediği ve madalya kazanı değiştirdiği görülmüştür. Performansı artırmak için çıkış biyomekaniğinin üç aşaması olan blok, uçuş ve su altını etkileyen kuvvetler ayrı ayrı öneme sahiptir. Blok aşamasında üretilen momentin uçuş aşamasında sporcunun daha ileriye gitmesini sağlayarak sualtı aşamasında erken geçiş ile sporcu daha az dalga ve türbülans kuvvetine maruz kalmaktadır. Böylelikle çıkış aşamasında 15 m’lik mesafede sporcu zaman ve hız bakımından avantaj sağlayarak yüzme aşamasına daha hızlı geçmektedir. Yüzücünün performansını etkileyen çıkış biyomekaniğinde; reaksiyon zamanı, blokta oluşturulan itme kuvveti, uçuş aşamasındaki vücudun stabilitesi, suya giriş sırasında yüzey gerilim kuvveti, sualtında sürtünme kuvveti, sürükleme kuvveti, türbülans ve dalga kuvveti birçok çalışmada ele alındığı basınç farkı kuvvetinin ise biyomekanik analizini yapmak diğer spor branşlarına göre (karada yapılanlara göre) daha zor olduğu literatürde yer almaktadır. Bu nedenle literatürde tüm parametreleri içeren çalışmalar yerine birkaç parametreyi değerlendiren çalışmalar bulunmaktadır. Bu çalışmanın amacı aşamaların kendi içinde dinamiklerinin değerlendirilerek bütün bir çerçevede ele alınması ve sporcunun performansını geliştirmede bakış açısı oluşturmaktır.
Az Európai Unió EUPOL missziója
Authors: Böröcz Miklós , Váraljai Tímea
Published: April 2021

The authors provide an overview of the European Union Police Mission in Afghanistan, established in June in 2007.
Investigation of Important Weak Interaction Nuclei in Presupernova Evolution
Authors: Nabi Jameel-Un , Ullah Asim , Khan Ali Abas
Published: April 2021

This project aims to investigate the most important weak interaction nuclei in the presupernova evolution of massive stars. To achieve this goal, an ensemble containing 728 nuclei in the mass range of A = 1–100 was considered. We computed the mass fractions of these nuclei using Saha’s equation for predetermined values of T, ρ, and Y

e
and assuming nuclear statistical equilibrium. The nuclear partition functions were obtained using a newly introduced recipe where excited states, up to 10 MeV, were treated as discrete. The weak interaction rates (electron capture (ec) and β-decay (bd)) were calculated in a totally microscopic fashion using the proton–neutron quasiparticle random phase approximation model and without assuming the Brink–Axel hypothesis. The calculated rates were coupled with the computed mass fractions to investigate the time rate of change of lepton to baryon fraction of the stellar matter. We compare our results with the previous calculations reported in the literature. Noticeable differences up to orders of magnitude are reported with previous calculations. These differences may influence the evolution of the star in the later stages of presupernova. We present a list of the top 50 ec and bd nuclei, which have the largest effect on Y

e
for conditions after silicon core burning. The competition between the ec and bd rates in the stellar core was investigated and it was found that Y

e
= 0.424–0.455 is the interval where the bd results are bigger than the ec rates.