bluuebunny/crossref_metadata_2025_split huggingface dataset:
Peculiarity of perception of mathematical disciplines by future engineers
Authors: Leonavičienė Teresė , Suboč Olga 
Published: August 2020

Mathematical disciplines are a part of all engineering study programmes. Their teaching specifics depends on programme, and modules of subjects are continuously improved and modified. However, reprezentation of material, proposed in programme, its perception by students,aspects of independent work are very relevant.Seeking to improve quality of studies of mathematical disciplines and motivate students to interest in them we performed research on perception of mathematical disciplines. The main goal of this research was to detect pecularity of perception of mathematical disciplines by future engineers, and to correct teaching methodics dependently on received results. Also we were seeking to reveal opinion of students on studied disciplines, to observe dominant tendences, motivate students‘ interest on studied discipline.To accomplish the research, we proposed students special sets of tasks with different representation of information and organized questionings. Results were processed using program package SPSS 16.Pecularity of perception of mathematical disciplines was investigated in Vilnius Gediminas Technical University, Faculty of Fundamental Sciences. In this investigation took part 98 secondgrade students of technical specialities, batchelor studies. Pecularity of perception was investigated during disciplines of differential equations and discrete mathematics.The main results and conclusions:1. During the semester students pay little attention to tests, that are not estimated by a mark. Average mark is between 4 and 5, i.e. in many cases knowledge of students is unsafisfactoriled or poor.2. Students of engineering informatics study programme better understood tasks with applications of mathematics (tasks on physics, modelling of real life processes and so on) and readily are searching for methods of solution. Students like to solve such tasks during practical lectures. However, these tasks are interesting, but require a wider viewpoint on studied discipline, so during evaluated tests these tasks are rarelly choosed.3. During evaluated tests students are inclined to choose „standard“ tasks, since they think that they will be guaranteed to get higher marks.4. Marks during the semester are little changing and correlate with evaluation of final exam.5. To prepare for mathematical disciplines, students generally invoke lectures‘ syllabuses, electronical study media and computer manuals.6. Considering the results of research we recommend in study programms of mathematical disciplines to give more attention to the applied nature of the tasks, to graphic illustration of data and results.
Algunos aspectos de las cardiopatías y la mecánica circulatoria durante el embarazo
Authors: López Escobar Guillermo 
Published: August 2020

Ha sido dicho con razón que: "La Maternidad es prerrogativa y privilegio de toda mujer, privilegio que nadie tiene el derecho de rehusar sin una razón poderosísima". Por esto nos alegramos de que hayan sido abandonados los viejos aforismos de Peters (57) para la mujer cardíaca: "Doncella no te cases, esposa no concibas, madre no amamantes".
Cualquiera atiende un parto
Authors: De Obstetricia y Ginecología Federación Colombiana 
Published: August 2020

Se lee en Stoeckel: “El técnico consumado con las manos sucias, el técnico torpe con guantes de goma y el tocólogo ignorante son los tipos más peligrosos en Obstetricia”. Acos­tumbrados como estamos a oír la frase con que se encabeza este ar­tículo, hubimos de gastar mucho ma­gín para comprender íntegramente el pensamiento del Profesor berlinés; porque nosotros tenemos técnicos consumados, eso nadie podría negar­lo, a menos que se trate de resenti­dos a quienes el complejo de infe­rioridad perturbe y atormente. Em­pero estos técnicos, si en algo pue­den tacharse de exagerados es pre­cisamente en su fobia por lo séptico y hasta tal punto, que algunos han adoptado el saludo olímpico, a fin de no contaminarse con el apretón de manos. Como la función de los profesor es enseñar, se supone que, quienes ejercen la clínica obstétrica habiendo tenido profesores —no fal­tan los autodidactas— han aprendi­do, a lo menos, lo necesario en asep­sia.
Anotaciones acerca de la Ovaritis Escleroquistica
Authors: Amorocho Carreño Jorge 
Published: August 2020

La entidad clínica ginecológica conocida como ovaritis escleroquística es polifacética en sus manifestaciones clínicas, y el presente trabajo quiere hacer únicamente un análisis de los síntomas, más frecuentemente encontrados, así como la discusión de su tratamiento y resultados.
Notas sobre placenta previa
Authors: Perez Gómez Eugenio 
Published: August 2020

En la REVISTA COLOMBIANA DE OBSTETRICIA Y GINECOLOGIA, Nº 2. correspondiente a los meses de febrero y marzo de 1950. el doctor Enrique Archila, publicó un interesante artículo titulado “Tratamiento de la Placenta Previa después del óbito fetal'’, en el cual presentaba la técnica del desprendimiento manual, que ha introducido y preconizado, entre nosotros el Profesor José del C. Acosta.
Tercera Jornada
Authors: De Obstetricia y Ginecologia Federación Colombiana 
Published: August 2020

La Revista de la Sociedad Colombiana de Obstetricia y Ginecología comienza su tercer año de vida. En eila, los colegas colombianos han publicado sus experiencias y han demostrado que, si bien intereses gremiales sirven de argamasa para mantener unida la corporación, los ideales científicos y el continuo afán de progreso no están lejos de las mentes consagradas al peregrinaje por los caminos de la tocología.
Primer Congreso Nacional de Obstetricia y Ginecología
Authors: De Obstetricia y Ginecología Federación Colombiana 
Published: August 2020

Para el mes de octubre próximo. 8 al 12. ha programado la Sociedad Colombiana de Obstetricia y Ginecología este primer congreso científico de su especialidad. Es una prueba que permitirá conocer cuál es la realdad de nuestros conocimientos y si su actualidad está acorde con la de otros países, o tenemos que impul­sar aún varios de sus sectores a fin de colocamos en condiciones de opinar en revistas, libros o congresos internacionales, para lo cual hemos sido eternamente esquivos.
Hidrazida del Acido Isonicotínico en el tratamiento de enfermas tuberculosas embarazadas
Authors: Amaya León Hernando 
Published: August 2020

Desde los trabajos de Rubin y col.1, Grunmberg y col.2. Selikoff y Robitzek3 y otros autores americanos y europeos, se ha visto que la quimioterapia con de­rivados del ácido Isonicotinico ha dado resultados muy satisfactorios en la tu­berculosis pulmonar y otras localizaciones extrapulmonares.
Effects of Partial Replacement of Coarse Aggregates with Reclaimed Rubber on the Mechanical Properties of Hardened Concrete
Authors: Williams Kanmalai , Al-Hatali Eman Muhye Adeen Muhye Adeen 
Published: August 2020

<p>The replacement of conventional aggregates with alternate materials like Reclaimed Rubber (RR) results in reduction of self-weight and compressive strength of concrete. This reduction in self-weight further decreases the dead load which contributes towards contraction in size of concrete members and reinforcement requirements. This diminution in compressive strength is compensated by replacing cement with supplementary materials like Silica Fume, Fly Ash or GGBS. This research focuses on the effects of partial replacement of cement and coarse aggregates with Silica Fume (SF) and Reclaimed Rubber (RR) respectively in the concrete mix. Concrete mix was prepared for M20 grade by replacing cement and coarse aggregates with SF and RR respectively for cube and cylinder samples. A base study has been carried out through compression and split tension tests by partially replacing cement with SF in 3 percent increments up to 24 percent. Maximum compressive strength of 19.6N/mm<sup>2</sup>, 24.2N/mm<sup>2</sup> and 32.5N/mm<sup>2</sup> was obtained at 12% replacement of cement with SF by weight while testing specimens after 7, 14 and 28 days of curing. Maximum strength of 2.4N/mm<sup>2</sup>, 2.9N/mm<sup>2</sup> and 3.1N/mm<sup>2</sup> was obtained during split tension tests conducted after 7, 14 and 28 days of curing period. Further compression and tension tests were conducted replacing cement with 12%SF along with various proportions of RR replacing coarse aggregates after different curing periods. Experiments reveal that a combination of 12%SF and 9%RR replacement produces maximum compressive strength of 19.2N/mm<sup>2</sup>, 23.1N/mm<sup>2</sup> and 29.4N/mm<sup>2</sup> after curing the samples for 7, 14 and 28 days respectively. The tensile strength decreases as the rubber content is increased in the concrete mix along with optimum SF when compared with normal mix.</p>
Women's knowledge about stress urinary incontinence
Authors: Aramowicz Anna , Sołtysiak - Gibała Zuzanna , Gibała Piotr , Kubala Beata , Burzyński Kamil , Burzyński Bartłomiej 
Published: August 2020

WstępProblem nietrzymania moczu jest częstą przypadłością wśród kobiet. Uważa się, iż uskarża się na nie aż 10% populacji. Jest chorobą przewlekłą, ma znaczący wpływ na jakość życia kobiet, przy czym wczesna interwencja pozwala na całkowite wyleczenie. Najczęstszą postacią nietrzymania moczu (NTM) jest wysiłkowe nietrzymanie moczu (WNM). Niepokojący jest fakt, iż coraz częściej dotyka on także kobiet młodych.Materiał i metodyW badaniu wzięły udział 152 kobiety w przedziale wiekowym 17–89 lat. Narzędzie badawcze stanowił kwestionariusz ankiety własnego autorstwa. Wyniki zostały poddane analizie statystycznej.WynikiWśród 13,2% badanych występuje WNM. Najwięcej respondentek uznało swój poziom wiedzy za średni (27%), wystarczający (23,7%) oraz słaby (15,1%). Natomiast 24,3% ankietowanych uważa posiadany zakres informacji za dobry oraz bardzo dobry (7,9%). Zdecydowana większość kobiet (92,1%) jest zdania, iż propagowanie wiedzy dotyczącej profilaktyki nietrzymania moczu jest niezbędne.WnioskiStan wiedzy kobiet w zakresie WNM wciąż jest niewystarczający. Kobiety wiedzą do kogo mogą się zwrócić z pierwszymi symptomami choroby oraz znają metody leczenia. Temat wysiłkowego nietrzymania moczu wciąż dla większości badanych jest tematem wstydliwym oraz ma znaczny wpływ na pogorszenie jakości życia. Istnieje ciągła potrzeba edukacji oraz propagowania informacji na temat inkontynencji.
Improvement technique of direct torque control of DFIG based in wind energy conversion system
Authors: Cherifi Djamila 
Published: August 2020

This paper presents a comparative study between two strategies for the direct torque control (DTC) of the doubly fed induction generator (DFIG) based on wind energy conversion system (WECS). The first method is a conventional direct torque control DTC and it is based on hysteresis controllers where the torque and the flux are regulated by these controllers. The second one is direct torque control by space vector modulation strategy (DTC-SVM) where the torque and flux are regulated by PI controllers. The main feature of the proposed (DTC-SVM) strategy is the reduction of torque and flux ripples. Simulation results of this proposed system were analyzed using MATLAB environment
In pregnant bitches, is elective caesarean section more effective than vaginal delivery at improving puppy survival?
Authors: Borisoot Mullika 
Published: August 2020

PICO question
In pregnant bitches due to whelp, is elective caesarean section more effective than vaginal delivery to improve puppy survival?

Clinical bottom line
Category of research question
The category of the research question is regarding the incidence of puppy mortalities as a result of vaginal delivery, emergency caesarean section and elective caesarean section.
The number and type of study designs reviewed
Two retrospective articles were reviewed and critically appraised; one retrospective study with high single canine breed bias and one study on different canine breeds but limited support in directly answering the PICO question.
Strength of evidence
The studies selected both had strong uses of experimental designs but together provided weak evidence to determine a definitive answer to the PICO question.
Outcomes reported
The outcomes from both retrospective studies suggests that the mortality rates of newborn puppies can be reduced if pregnant bitches are scheduled ahead for elective caesareans, in comparison to undergoing an emergency caesarean section when complications develop, particularly in breeds with higher risks of dystocia. Therefore, there is some evidence to support that it may be advantageous to consider the breed, age and overall health of the bitch during pregnancy to determine whether elective caesarean sections, for the safe delivery of puppies, should be considered.
Conclusion
There are currently insufficient studies, literatures and evidence in veterinary medicine for caesarean sections to become a routine procedure in first opinion practices. Future prospective studies should be conducted and include the optimum anaesthetic protocols with the lowest associated risks for the pregnant bitch and puppies.

How to apply this evidence in practice
The application of evidence into practice should take into account multiple factors, not limited to: individual clinical expertise, patient’s circumstances and owners’ values, country, location or clinic where you work, the individual case in front of you, the availability of therapies and resources.
Knowledge Summaries are a resource to help reinforce or inform decision making. They do not override the responsibility or judgement of the practitioner to do what is best for the animal in their care.
Algoritma Elephant Herding Optimization: Permasalahan Multiple Constraints Knapsack 0-1
Authors: Regita Yulia Dewi , Santoso Kiswara Agung , Kamsyakawuni Ahmad 
Published: August 2020

Optimization problems are often found in everyday life, such as when determining goods to be a limited storage media. This causes the need for the selection of goods in order to obtain profits with the requirements met. This problem in mathematics is usually called a knapsack. Knapsack problem itself has several variations, in this study knapsack type used is multiple constraints knapsack 0-1 which is solved using the Elephant Herding Optimization (EHO) algorithm. The aim of this study is to obtain an optimal solution and study the effectiveness of the algorithm comparing it to the Simplex method in Microsoft Excel. This study uses two data, consisting of primary and secondary data. Based on the results of parameter testing, the proven parameters are nClan, nCi,α,β and MaxGen have a significant effect. The final simulation results have also shown a comparison of the EHO algorithm with the Simplex method having a very small percentage deviation. This shows that the EHO algorithm is effective for completing optimization multiple constraints knapsack 0-1.
Keywords: EHO Algorithm, Multiple Constraints Knapsack 0-1 Problem.
MODELISASI TIANG TERAS MENGGUNAKAN HASIL DEFORMASI PRISMA SEGIENAM, TABUNG DAN BOLA
Authors: Henik Elsha , Juliyanto Bagus , Kusno Kusno 
Published: August 2020

The cup is given to someone as a sign of apreciation and a gift of achievement. In general, the cup consists of the top, the middle, and the base. This research aims to obtain various forms of the design of cup that varied by merging the deformation results of solid geometry objects. This research method is divided into several stages. First, construct some basic objects as constituent components of cup from deformation of prism hexagon, tube, and cone. Second, set some basic objects of the component of cup on three types of modeling axis. Third, arrange program using software Maple 18. The results of this research obtained the procedure for designing various forms of constituent components of cup from the basic object of a prism hexagon, tube, and cone. Furthermore, the procedure for assembling the components of cup from the first procedure results on three types of modeling axis.
Keywords: Cup, Defomation, Prism Hexagon, Tube, Cone
PERBAIKAN CITRA INFRA MERAH DENGAN METODE CELLULAR AUTOMATA
Authors: Hidayah Annisa Yuniar , Riski Abduh , Kamsyakawuni Ahmad 
Published: August 2020

Image enhancement is needed because not all images have good quality, such as noise, too low contrast or blurry image. These problems are commonly found in images generated from infrared cameras, therefore this study uses infrared imagery as an image to be corrected. The method that will be used to improve the image, namely Cellular Automata method. The edge detection using the Prewitt operator will be used as the initial state of Cellular Automata cells. The results obtained from this research is Cellular Automata method can improve the quality of infrared image well. Visually, the Cellular Automata method successfully improves image contrast and retains the infrared image detail so as not to reduce the value of information from the image. Calculated using the Linear Index of Fuzziness, the results of the Cellular Automata method are better only on some imagery only when compared to the Histogram Equalization mode.
Keywords: Infrared Image, Image Enhancement, Cellular Automata
PENERAPAN COCKROACH SWARM OPTIMIZATION ALGORITHM (CSOA) PADA PENYELESAIAN PERSAMAAN POLINOMIAL YANG MEMILIKI AKAR KOMPLEKS
Authors: Farikha Ema Fahma , Hidayat Rusli , Arif Muhammad Ziaul 
Published: August 2020

In this paper, we use a metaheuristic algorithm for solving non-linear equations (polynomial equations) which have a set of complex roots (complex numbers). The metaheuristic algorithm is the Cockroach Swarm Optimization Algorithm (CSOA) which imitate various types of natural cockroach behaviors such as chase-swarming, dispersing and ruthlessness when hunting for food sources. In this study, several examples of non-linear polynomial equations were used for evaluating the accuracy of CSOA. In this simulation, the accuracy comparison has been accomplished. It is shown that CSOA results are more accurate compared to the Newton-Raphson results.
Keywords: Cockroach Swarm Optimization Algorithm, Complex roots of polynomial, Newton-Raphson, Non-Linear equation.
PENERAPAN DRAGONFLY OPTIMIZATION ALGORITHM (DOA) PADA PERMASALAHAN MULTIPLE CONSTRAINTS BOUNDED KNAPSACK
Authors: Nilasari Laylatul Febriana , Santoso Kiswara Agung , Riski Abduh 
Published: August 2020

Optimization is very useful in almost all fields in running a business effectively and efficiently to achieve the desired results. This study solves the problem of multiple constraints bounded knapsack by implementing DOA. The problem of multiple constraints bounded knapsack has more than ones constraint with objects that are entered into the storage media, the dimensions can be partially or completely included, but the number of objects is limited. The purpose of this study is to determine the results of using DOA to solve multiple constraits bounded knapsack and the effectiveness of DOA compared to the results of the Simplex method. The data used in this study are primary data. There are ten parameters to be tested, namely population parameters, maximum iteration, s, a, c, f, e and range. The trial results of the ten parameters show that the best value of the parameters is neither too large nor too small. If the best value is too large then the position of the dragonfly will be randomized so that it is not clear the position of the dragonfly and if it is too small the best value then the change is not visible. In addition, based on the results of the final experiment it can be seen that DOA is less effective in solving multiple constraints bounded knapsack problems, because of many experiments there is no solution similar to Simplex. DOA approach to optimal, seen from a small deviation.
Keywords: DOA, Knapsack, Multiple constraints bounded knapsack problem.
ANALISIS STRUCTURAL EQUATION MODELING (SEM) DENGAN MULTIPLE GROUP MENGGUNAKAN R
Authors: Holipah Holipah , Tirta I Made , Anggraeni Dian 
Published: August 2020

Structural Equation Model (SEM) is a statistical technique with simultaneous processing involves measurement errors, indicator variables, and latent variables. SEM is used to test hypotheses that state the relationships between latent variables when latent variables have been assessed through each of the indicator variables. Multiple Group SEM is a basic model analysis that uses more than one sample. This analysis aims to determine whether the components or models of measurement and structural models are invariant for the two sample groups. In this study, the data generated by some requirements. First, the data generated with sample size n = 250. The first generated data is homogeneous data where the measurement model is the same as the structural model in group 1 and group 2, while the second data is non-homogeneous data where the measurement model and the structural model in group 1 and group 2 is not the same. The data was analyzed using the help of the lavaan package available in R to obtain SEM estimation results and Goodness of Fit Model from some data that was formed. From the results of the merger of the two groups, it shows that the invariant of the two models with the largest df (63) which is Fit Mean model states the simplest model. However, the smallest df (48) with Fit.configural model states the most complex model.
Keywords: SEM, Multiple Group, R Program
PENGAMANAN POLYALPHABETIC DENGAN AFFINE CIPHER BERDASARKAN BARISAN FIBONACCI
Authors: Astuti Lestari Fidi , Santoso Kiswara Agung , Kamsyakawuni Ahmad 
Published: August 2020

Affine cipher is a classic cryptographic algorithm substitution technique. Substitution technique is the encryption process for every character in the plaintext will be subtituted by another character. Affine cipher uses two types of keys. Each character of plaintext to be encrypted substituted by the same key. This research discusses about modify one of the key affine cipher, to produce a different key that will be substituted with each plaintext character. Key modifications are made by the Fibonacci sequence rules. This study also compares affine cipher and key modification affine cipher by finding corelation coeffiecient values. The results obtained from the comparison of the two algorithms, encryption that uses affine cipher key modification is better than affine cipher.
Keywords: Cryptography, Affine Cipher, Fibonacci, Correlation Value
The Effect of Phase Distribution on Imbibition Mechanisms for Enhanced Oil Recovery in Tight Reservoirs
Authors: Wang Mingyuan , Argüelles-Vivas Francisco J. , Abeykoon Gayan A. , Okuno Ryosuke 
Published: August 2020

Abstract
The main objective of this research was to investigate the impact of initial water on the oil recovery from tight matrices through surfactant-enhanced water imbibition. Two flooding/soaking experiments using fractured tight cores with/without initial water were performed. The experimental results were analyzed by the material balance for components: oil, brine, and surfactant. The analysis resulted in a quantitative evaluation of the imbibed fraction of the injected components (brine and surfactant).
Results show that the surfactant enhanced the brine imbibition into the matrix through wettability alteration. The initial efficiency of the surfactant imbibition increased when brine was initially present in the matrix. The imbibition of brine was more efficient with no initial water in the matrix. A possible reason is that the presence of initial water in the matrix was able to increase the initial efficiency of the surfactant imbibition; however, the increased amount of surfactant in the matrix lowered the interfacial tension between the aqueous and oleic phases; therefore, the efficiency of brine imbibition was reduced. Another possible reason is that capillary force was lower in the presence of initial water in the matrix, resulting in weaker imbibition of brine.
Although the two cases showed different characteristics of the mass transfer through fracture/matrix interface, they resulted in similar values of final water saturation in the matrix. Hence, the surfactant injection was more efficient for a given amount of oil recovery when there was no initial water in the matrix.