bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of the tape pH indicator acid-basic from açai pulp extract
Authors: Correia Leandro Marques , Da Costa Rilder Tebias Toledo , Da Silva Arlesson Pereira , De Aviz Emanoel Oliveira , De Araújo Josiney Farias , De Freitas Manolo Cleiton Costa 
Published: April 2020

Euterpe oleracea Mart. known as acai, it is a palm of bacaceous fruit, distributed throughout Brazil in states such as Amazonas, Pará, Maranhão, Rondônia and Tocantins. The objective of this work was to produce an acid-base indicator strip from the hydroalcoholic extract of the pulp of Euterpe oleracea Mart. to determine acidity by colorimetric method, also seeking to develop in a simple, fast and low cost, being an alternative way to be used in teaching Chemistry in experimental practical classes with the subject covered in Inorganic Functions in Teaching: Elementary, Middle and Higher. The methodology used was carried out in stages: (i) obtaining the acai pulp from the fruits of the açaizeiro, (ii) obtaining the extract from the pulp of Euterpe oleracea Mart., (iii) building a pH scale (0- 14), (iv) obtaining a pH paper from the hydroalcoholic extract, (v) identification of acidic and basic substances in everyday use with both the extract and the pH indicator paper, (vi) determining the acetic acid content in commercial vinegars, and (vii) a comparison of the results obtained from% acetic acid, both with the synthetic indicator (phenolphthalein) and with the natural indicator. Through the tests with the tape and with the pulp extract of Euterpe oleracea Mart. satisfactory results were obtained. Thus, the pH tape and the Euterpe oleracea Mart. pulp extract identified the acidic, basic and neutral substances of everyday life, showing an alternative for teaching with practical experimental chemistry classes, being financially viable, and exploring an application of Euterpe oleracea Mart. pulp. as forest treasure for future industrial applications, such as the production of a pH indicator strip.
Design and Investigation of Modern UWB-MIMO Antenna with Optimized Isolation
Authors: Irshad Khan Muhammad , Khattak Muhammad Irfan , Rahman Saeed Ur , Qazi Abdul Baseer , Telba Ahmad Abdeltawab , Sebak Abdelrazik 
Published: April 2020

This paper proposes a compact, semi-circular shaped multiple input multiple output (MIMO) antenna design with high isolation and enhanced bandwidth for ultrawide band (UWB) applications. A decoupling stub is used for high isolation reaching up to −55 dB over the entire bandwidth. The proposed antenna is used for UWB as well as super wide band (SWB) applications. The overall size of the proposed antenna is 18 × 36 × 1.6 mm3. The | S 11 | and voltage standing wave ratio (VSWR) of the proposed antenna are less than −10 dB and 2, respectively, in the range of 3–40 GHz. The total impedance bandwidth of the proposed design is 37 GHz. The VSWR, | S 11 | , | S 22 | , | S 21 | , | S 12 | , gain, envelope correlation coefficient (ECC), radiation pattern, and various other characteristic parameters are discussed in detail. The proposed antenna is optimized and simulated in a computer simulation technology (CST) studio, and printed on a FR4 substrate.
SOCIAL NETWORKS AS A TOOL FOR DEVELOPMENT FOREING GRAMMAR COMPETENCE OF UNIVERSITY STUDENTS
Authors: Фельцан Інна 
Published: April 2020

It has been commonly agreed that social networks is an educational tool related to interests and needs of a modern student. We may use it as a connector between participants of educational process: teachers may reach their students outside limited classroom activity and motivate them to further study in a non-formal atmosphere.
The article discusses possibilities of using social networks (Facebook) and digital applications (like, Viber) to develop grammar competence of students through blogging, texting, posting. Having organized a small focus group, we were able to: define functions and skills which are required when you enter networks for educational purposes; understand the drawbacks of using social networks and describe the support expected from a teacher; advise on the pace and tasks used in virtual classes. Dynamics of cosmopolitan societies demand knowledge of international communicative ethics which, due to IT progress, is required during e-mailing, on-line discussions and meetings, participation in distant conferences. Modern student is a researcher who can do both – collect and share information with the outer world.
There’s also much space for personal development: students learn to promote their skills, communicate in virtual profession-oriented environment, form cross-cultural verbal literacy, improve soft skills and interpersonal cooperation, analyze and correct own grammar mistakes as well as accumulate experience of other group members. Knowing the methodology of up-to-date practices, teacher can motivate to educative on-line communication: writing blogs, posting on latest events, commenting to daily tasks in viber-community. Active learning demonstrates results of study immediately – staying verbally active 24/7, students see the perspective of own future mobility.
We have concluded that there’s an urge necessity for professional upgrade of teachers, as using social networks for specific educative purposes demands personal mobility, compute proficiency, readiness to work outside formal classroom, responsibility for creation of informal study material and content choice, psychological competence, people skills.
Key words: social networks, mobility, modern educational tool, digital competence, blogging, virtual class.
ПЕДАГОГІЧНІ УМОВИ ФОРМУВАННЯ ПРОЄКТНОЇ КОМПЕТЕНТНОСТІ МАЙБУТНІХ ФАХІВЦІВ З ІНФОРМАЦІЙНОЇ, БІБЛІОТЕЧНОЇ ТА АРХІВНОЇ СПРАВИ
Authors: Іванова Наталя 
Published: April 2020

У публікації порушено проблему формування практико орієнтованих професійних компетентностей у майбутніх фахівців з інформаційної, бібліотечної та архівної справи, зокрема проєктної компетентності. Важливою характеристикою процесу формування професійних компетентностей визначено реалізацію певних педагогічних умов. Педагогічні умови формування проєктної компетентнос-ті визначено як цілеспрямоване проєктування процедур та застосування певної системи з елементів змісту, методів (прийомів), форм організації навчання для забезпечення готовності майбутнього фахівця до здійснення проєктної діяльності в професійній сфері. Наголошено на важливості педагогічних умов формування проєктної компетентності, які позитивно впливають на професійний рівень і творчу самореалізацію майбутніх професіоналів, ефективність проєктної діяльності як складової професійноїдіяльності, сприяють їх різнобічному розвитку. Визначено пріоритетні з них: 1) забезпечення мотивації до оволодіння професією та використання проєктної діяльності як способу професійного зростання; 2) проєктування змісту дисциплін циклу фахової підготовки; 3) використання інформаційно-комунікаційних технологій; 4) оволодіння практичним досвідом здійснення проєктної діяльності; 5) стимулювання рефлексивної позиції майбутніх фахівців; 6) формування особистісних і професійних якостей особистості майбутнього фахівця. Охарактеризовано їх особливості. Наголошено, що визначені педагогічні умови реалізуються комплексно і є взаємопов’язаними між собою. Доведено, що ефективність формування проєктної компетентності підвищується за умови дотримання поетапного формування її компонентів в їх взаємозв’язку.
Ключові слова: проєктна компетентність, педагогічні умови, майбутні фахівці з інформаційної, бібліотечної та архівної справи.
ПРОФЕСІЙНИЙ РОЗВИТОК ДЕРЖАВНИХ СЛУЖБОВЦІВ ЗАСОБАМИ ТРЕНІНГОВИХ ТЕХНОЛОГІЙ
Authors: Калюжна Тетяна 
Published: April 2020

Стаття присвячена проблемі професійного розвитку державних службовців засобами тренінгових технологій. Проаналізовано визначення терміну «професійний розвиток державних службовців» українськими та зарубіжними науковцями, зроблено узагальнення даного терміну та відмічено, що професійний розвиток державних службовців це є організований системний процес безперервного навчання державних службовців, спрямований на досягнення відповідного рівня професіоналізму, саморозвитку, що сприятиме ефективному та відповідальному виконанню посадових обов’язків, успішній реалізації внутрішньої та зовнішньої політики держави. Розкрито важливість професійного розвитку державних службовців для формування високопрофесійного інституту державної служби в Україні та його ефективного функціонування у державі для забезпечення конкурентоспроможності на ринку праці, оновлення і зростання обсягів надання послуг, підвищення довіри суспільства та громадськості.
Особливу увагу приділено тренінговим технологіям для досягнення відповідних умінь і навичок, високого рівня професійного розвитку державних службовців. Відмічено, що тренінг є творчим навчальним процесом, і його проведення залежить не тільки від вибору методів проведення тренінгових технологій, а й від особистості тренера, який повинен володіти високими особистісними моральними якостями та професійними навичками проведення тренінгу. Розглянуто методи тренінгових технологій такі як: метод мозкового штурму, метод Case Study, метод рольової гри, при застосуванні яких підвищується рівень професійного розвитку державних службовців. Наголошено на важливості використання тренінгових технологій насамперед у підвищенні рівня професійного розвитку державних службовців, а також у системі післядипломної освіти, у системі підготовки, перепідготовки та підвищенні кваліфікації державних службовців.
Ключові слова: професійний розвиток, державні службовці, тренінг, інноваційні технології, методи, вибір методів навчання.
Prevalence of Molestation among Male Coaches towards Female Athletes in Different Sports at Public Sector Universities Sindh, Pakistan
Authors: Bhatti Shireen , Dr. Salah Uddin Khan  , Bashir Maryam 
Published: April 2020

This study investigated the perception of respondents towards the prevalence of molesting behavior among male coaches in respect of female athletes in different games at public sector universities in Sindh province. The study was mixed-method (survey and semi-structured interview) The Purposive sampling method was employed for the collection of the required data. Female athletes who competed at the intercollegiate, intervarsity, provincial and national level of public universities of Sindh province were subject of this study. The self-inventory and adapted questionnaire on sports-specific touch and behavior versus unwanted intimacy from coaches developed by Vanden Auweele (2006) Vanden Auweele et al (2008) was administrated for data collection. There were 85 female athletes from 20 public universities who participated in the survey. The result of the study revealed that there is a significant prevalence of molesting behavior among male coaches towards female athletes in different sports at public universities of Sindh province due to the coach’s power, authority, decision making position, the threat of rejection on the refusal of sexual cooperation, the ready availability of inexperienced female athletes and lack of implication of policies regarding sexual misconducts in public sector universities.
Re-thinking Higher Education Curricula in the Era of Knowledge Economy: A Case Study of Course Codes in the National Curriculum of Pakistan
Authors: Khan Itbar , Ahmad Iftikhar , Ahmad Rashid 
Published: April 2020

The study reviewed the course codes at undergraduate level in selected universities and Higher Education Commission (HEC). The objectives of the study were to investigate the coding system of courses and propose a system for coding the courses at tertiary level in Pakistan. The coding system of different universities, inside and outside Pakistan, was analyzed and a system of coding was proposed. The study found discrepancies in the coding of courses that cause difficulties for academic bodies and transfer of credits from one university to another. It is recommended that courses of a degree required may be divided in 1) General Education requirements, 2) Subject specific foundation courses, 3) subject specific major compulsory courses, and 4) subject specific major elective courses. For codes 2, 3 or 4 capital letters for a subject along with three numbers (xxx) may be used to specify each course of the university. The left digit of the three may be used for the hardship level. The courses 1xx, 2xx, 3xx and 4xx will be taught in the first, second, third and fourth year, respectively and research may be given 500 at undergraduate level, courses of 5 year may be placed in 5xx and research may be coded as 599. The graduate level courses for MPhil /MS /PhD may be coded as 6xx, 7xx and 8xx for MPhil and PhD all over the country.
Historical Background Of The Rohingya Refugee Crisis And The Implication Of Their Statelessness
Authors: Kader Mohammad Fazlul , Choudhury Anwar Hossain 
Published: April 2020

Purpose: Bangladesh is a country that is consisted of various ethnic groups. After the 46 years of freedom, Bangladesh remains under the title of a developing country with numerous afflictions. Rohingya is one of such misery. They face mass killing, execution, forced labor and deportation or denied them the most basic of human rights and rendered them stateless. The main purpose of this study was the causes of the Rohingya refugee crisis and find out the implication of their statelessness.
Methodology: It was both descriptive and exploratory research in nature (Interview Schedule and Case study used for data collections). This study analyzes from theoretical frameworks, Migration theory to figure out the Rohingya crisis and their impact on local peoples.
Main Findings: This study is an attempt to find out local people view on causes of Rohingya refugee crisis and the implications of their statelessness.
Applications: According to the findings of the study, around 93 % of local peoples think that Rohingyas are the original citizens of Myanmar and the causes of their persecutions in Myanmar were mainly religious and their political economy.
Originality: In the future, this study will be helpful for the background study of the Rohingya Refugee crisis.
Factors Effecting The Elasticity Of Micro Credit Demand In Southern Punjab, Pakistan
Authors: Razzaq Shazma , Maqbool Nadeem , Hameed Waseem Ul 
Published: April 2020

Purpose of the study: Microfinance institutions (MFIs) are delivering various services of microcredit, savings as well as insurance. The key objective of microcredit is to decrease the poverty level and for empowering the women as well as other poor people under various developing countries. There is the various factor which effects on the demand of microcredit. Therefore, the objective of the current study is to explore the factors which affect the demand for microcredit.
Methodology: In this conceptual study, the qualitative research technique was used. The data were collected from previous research studies and companies’ websites.
Main Findings: It is concluded that numerous factors may influence the demand for microcredit by the various borrowers. These comprise the interest rate, the relationship between lenders as well as borrowers, different government policies, gender differences, prospective beneficiaries, the creditworthiness of the borrower, transaction cost, limited access to credit, economic condition and the availability of information.
Applications: This helps analyze the barriers which the borrower and lender must face in operating the microcredit. In this way, microfinance institutions can take help from this study by considering these factors during the distribution of credit.
Novelty/Originality: The findings of this research study fulfilled the theoretical gaps in the literature by identifying the different fact which may help to revise the poverty level. Future research studies may focus on these factors, which may help to increase the economy and reduce poverty in southern Punjab, Pakistan.
REVIEW OF THE GENUS HASARIUS (ARANEAE: SALTICIDAE) - A TAXONOMIC FIASCO
Authors: Prószyński Jerzy 
Published: April 2020

The genus Hasarius Simon, 1871, is revised following methodology recommended by “Pragmatic classification” of Prószyński (2017). Structure of the genus is insufficiently known, containing at present single cosmopolite species and a few of uncertain congeners.The paper introduces the following nomenclatorical corrections: Hasarius adansoni: Jastrzebski, 2010b: 321, f. 1, 4-5 (female only) = Hasarius tropicus Jastrzebski, 2010 - correction of identification. Species: kweilinensis Prószyński, 1992, orientale Zabka, 1985, dactyloides Xie, Peng & Kim, 1993 listed variably in combinations with generic names Habrocestum, Habrocestoides, Hasarius and Chinattus seem to be misplaced in these genera and deserve transfer to own new genus. Qualification of 6 species of Hasarius as "nomina dubia" by the WSC (ver. 18.5) after Roewer's (1954[1955]: 1523-1524) is changed to "pending revision" because of existence of preserved type specimens. Synonymy of the genera Gedea Simon, 1902 and Meata Zabka, 1985 proposed recently by Maddison (2015) without published documentation are not recognized here until proof will appear printed.
Kepler Data Analysis: Non-Gaussian Noise and Fourier Gaussian Process Analysis of Stellar Variability
Authors: Robnik Jakob , Seljak Uroš 
Published: April 2020

Abstract
We develop a statistical analysis model of Kepler stellar flux data in the presence of planet transits, non-Gaussian noise, and stellar variability. We first develop a model for the Kepler noise probability distribution in the presence of outliers, which make the noise probability distribution non-Gaussian. We develop a signal likelihood analysis based on this probability distribution, in which we model the signal as a sum of the star variability and planetary transits. We argue that these components need to be modeled together if optimal signal is to be extracted from the data. For the stellar variability model we develop an optimal Gaussian process analysis using a Fourier-based Wiener filter approach, where the power spectrum is non-parametric and learned from the data. We develop high dimensional optimization of the objective function, where we jointly optimize all the model parameters, including thousands of star variability modes, and planet transit parameters. We apply the method to Kepler-90 data and show that it gives a better match to the stellar variability than the existing methods, and robustly handles noise outliers. As a consequence, the planet radii have a higher value than what the existing methods give, including splines and celerite.
Atacama Cosmology Telescope: Dusty Star-forming Galaxies and Active Galactic Nuclei in the Equatorial Survey
Authors: Gralla Megan B. , Marriage Tobias A. , Addison Graeme , Baker Andrew J. , Bond J. Richard , Crichton Devin , Datta Rahul , Devlin Mark J. , Dunkley Joanna , Dünner Rolando , Fowler Joseph , Gallardo Patricio A. , Hall Kirsten , Halpern Mark , Hasselfield Matthew , Hilton Matt , Hincks Adam D. , Huffenberger Kevin M. , Hughes John P. , Kosowsky Arthur , López-Caraballo Carlos H. , Louis Thibaut , Marsden Danica , Moodley Kavilan , Niemack Michael D. , Page Lyman A. , Partridge Bruce , Rivera Jesus , Sievers Jonathan L. , Staggs Suzanne , Su Ting , Swetz Daniel , Wollack Edward J. 
Published: April 2020

Abstract
We present a catalog of 510 radio-loud active galactic nuclei (AGNs, primarily blazars) and 287 dusty star-forming galaxies (DSFGs) detected by the Atacama Cosmology Telescope at

significance in frequency bands centered on 148 GHz (2 mm), 218 GHz (1.4 mm), and 277 GHz (1.1 mm), from a 480 deg2 strip centered at R.A. 00h on the celestial equator with additional 360 deg2 shallower auxiliary fields at other longitudes. The combination of the deepest available 218 GHz wide-field imaging, our 277 GHz data, and multiband filtering results in the most sensitive wide-field millimeter-wave DSFG selection to date, with rms noise level referenced to 218 GHz reaching below 2 mJy. We have developed new techniques to remove Galactic contamination (including evidence for CO (2−1) line emission) from the extragalactic catalog, yielding a catalog of 321 Galactic sources in addition to the extragalactic catalog. We employ a new flux debiasing method that accounts for the heterogeneous sample selection in the presence of Galactic cuts. We present the spectral properties and source counts of the AGNs and DSFGs. The DSFG spectra depart from the Rayleigh–Jeans regime of an optically thin modified blackbody between 218 and 277 GHz, consistent with optically thick emission or an additional cold dust component. For AGNs with 148 and 218 GHz flux density >50 mJy, we estimate the interyear rms fractional deviation in flux density due to source variability to be 40% with a 0.98 interband correlation coefficient. We provide source counts for AGNs in the range of 8–2870 mJy and for DSFGs in the range of 8–90 mJy. Our DSFG counts probe both the brighter, lensed population and the fainter, unlensed population. At 277 GHz we report the first measurements of source counts at these flux densities, finding an excess above most model count predictions. Finally, we present 30 of the brightest DSFGs that were selected for multifrequency study as candidate high-z lensed systems.
Rotational Disruption of Nonspherical Cometary Dust Particles by Radiative Torques
Authors: Herranen Joonas 
Published: April 2020

Abstract
Rigorous statistical numerical analysis of the response of a nonspherical dust particle ensemble composed of aggregates of astronomical silicate is presented. It is found that the rotational disruption mechanism is not only likely to occur but to be a key element in explaining many separate observations of cometary dust. Namely, radiative torques are shown to spin-up and align cometary dust within the timescales of cometary activity. Additionally, the radiative torque alignment and disruption mechanisms within certain conditions are shown to be consistent with observations of rapid polarization of dust and spectral bluing of dust. The results indicate that radiative torques should be taken into account nearly universally when considering the evolution of cometary dust.
Runaway Coalescence of Pre-common-envelope Stellar Binaries
Authors: MacLeod Morgan , Loeb Abraham 
Published: April 2020

Abstract
We study the process of runaway, unstable Roche lobe overflow in coalescing binary systems and its dependence on the properties of the binary involved. We create three-dimensional hydrodynamic models of binary coalescences and follow them through a phase of increasing Roche lobe overflow until the accretor is engulfed by the donor at the onset of a common-envelope phase. In these models, we vary binary properties of mass ratio, donor structure and spin, and equation of state through the gas adiabatic index. We compare the numerical results to semianalytic models of binary orbit evolution based on mass and angular momentum exchange between two point masses. Using our hydrodynamic simulations, we measure the key parameters: the donor mass-loss rate and the angular momentum exchanged per unit mass loss from the donor. Using these calibrations, the semianalytic model closely reproduces the escalating mass loss and runaway orbital decay observed in the hydrodynamic models. The semianalytic model accurately reproduces the major differences in orbit evolution that arise with varying mass ratio and donor structure. We encapsulate the semianalytic model in a publicly released Python package, RLOF. We apply this model to the observed period decay and subsequent merger of the binary V1309 Sco and find that it can simultaneously reproduce the observed orbital decay and time of outburst. We further demonstrate that there is a relationship between the period derivative and second derivative that can be a useful metric for evaluating candidate merging binaries.