bluuebunny/crossref_metadata_2025 huggingface dataset:
Accuracy of the Corvis Biomechanical Index in Keratoconus Screening
Authors: Hanan Fazle , Ali Zulfiqar , Naeem Muhammad
Published: July 2020

Purpose:  To evaluate the accuracy of the Corvis Biomechanical Index (CBI) in screening of patients with Keratoconus.

Study Design:  Cross sectional study.

Place and Duration of Study:  Amanat Eye Hospital Peshawar from July 2018 to June 2019.

Material and Methods:  One thousand eyes were included in this study. Patients who came for keratorefractive laser procedure or collagen cross linkage were included in the study by convenient sampling technique. Six hundred and eleven patients had early Keratoconus and 389 were normal controls. Control group included those individuals who had visual acuity of 6/6 with no clinical feature of Keratoconus and normal TBI. All individuals included in the study underwent a thorough ocular examination, CBI and TBI tests. SPSS version 23 was used for statistical analysis of collected data.

Results: The mean CBI value was 0.3186 ± 0.407 standard deviation (SD), the standard error (SE) of the mean was 0.0129 with a 95% confidence interval (CI) of 0.293 to 0.343. The minimum CBI value was 0.00 and the maximum value was 1.00. The mean Tomographic Biomechanical Index (TBI) value was 0.465 ± 0.392 SD, SE was 0.124 with a 95% CI of 0.222 to 0.708. The range of TBI values was 0.00 to 1.00. For CBI, sensitivity was 58.2%, specificity was 100%, positive predictive value was 100%, and negative predictive value was 61.2%.

Conclusion:  Although CBI is accurate in terms of specificity and sensitivity, the result should be interpreted in combination with clinical data and other topographic and tomographic parameters.
PENGARUH MANAJEMEN MODAL KERJA DAN STRUKTUR MODAL TERHADAP KINERJA KEUANGAN
Authors: Hartawan Aldo , Dara Siti Ruhana
Published: July 2020

This research aims to analyze the effect of receivable turnover, working capital turnover, inventory turnover and debt-equity ratio on financial performance subsector food and beverage companies listed in the Indonesia Stock Exchange period 2014-2018. The research method is a multiple linear regression analysis and analysis method with panel data. The sample is taken by using purposive sampling method, there are 17 companies that meet the criteria. The result of the analysis indicates that working capital turnover has a significant effect the financial performance. Receivable turnover, inventory turnover and debt-equity ratio has no significant effect on financial performance. And simultaneously overall receivable turnover, working capital turnover, inventory turnover, and debt-equity ratio have a significant effect on financial performance.
PENCAPAIAN TARGET LEVERAGE MELALUI SPEED OF ADJUSTMENT KARAKTERISTIK PERUSAHAAN
Authors: Maulana Yasir , Yusuf Ayus Ahmad
Published: July 2020

This paper aims to determine the effect of company characteristics on target leverage with the relation of the speed of adjustment to target leverage. The speed of adjustment is examined to complete the analysis of the concept of dynamic capital structure in Indonesia. The characteristics of the companies studied are profitability, company size, company growth, industry, tangibility, inflation and the deficit and financial surplus of companies in the property, real estate and construction sectors listed on the Indonesia Stock Exchange in 2008 to 2015. The results of this study show that property, real estate, and construction sector companies are significantly implementing leverage targets. The data also shows that there is a significant effect of speed of adjustment to the leverage target which is faster when the company has a financial surplus compared to when the financial deficit.
FAKTOR PENENTU HARGA SAHAM SEKTOR OTOMOTIF: PERAN KEBIJAKAN DIVIDEN, PROFITABILITAS, UKURAN PERUSAHAAN DAN GROWTH OPPORTUNITY
Authors: Roza Oktavia Aqma , Lestari Diyan
Published: July 2020

This study aims to analyze the effect of dividend policy, profitability, firm size, and growth opportunity on stock prices in automotive companies during 2009-2017. This study was performed by 13 automotive companies. The sampling technique used in this research is purposive sampling method. This study has 8 companies. Data are analyzed using panel regression and hypothesis test (t statistic). The result showed that dividend policy does not affect the stock prices while profitability, firm size and growth opportunity had an effect on the stock price.
PENGARUH EPS, ROE, GROWTH OPPORTUNITY DAN UKURAN PERUSAHAAN TERHADAP STRUKTUR MODAL PADA PERUSAHAAN
Authors: Komalasari Katya , Lestari Diyan , Fathony Moch
Published: July 2020

Abstract: This study aims to analyze the effect of EPS, ROE, growth opportunity, and firm size on capital structure in property & real estate companies in 2011-2016 which is listed in IDX. The data used in this study are secondary data published in IDX. The number of samples taken is 31 property & real estate companies that have passed the Purposive Sampling. The analytical technique used is multiple linear regression that aims to obtain a comprehensive picture of the relationship between two or more variables with the dependent variable. The result of this study shows that EPS and ROE do not affect the capital structure. Growth opportunity has a positive and significant influence on capital structure. SIZE has a negative but significant influence on capital structure.

Abstrak : Penelitian ini bertujuan untuk menganalisis pengaruh EPS, ROE, growth opportunity dan ukuran perusahaan terhadap struktur modal pada perusahaan di sektor properti & real estate di Indonesia pada tahun 2011-2016. Data yang digunakan pada penelitian adalah data sekunder yang diterbitkan oleh IDX, dan juga situs- situs resmi yang memiliki validitas yang baik pada periode tahun 2011-2016. Jumlah sampel yang diambil adalah 31 perusahaan properti & real estate yang telah melewati tahap Purposive Sampling. Teknik analisa yang digunakan adalah regresi linier berganda yang bertujuan untuk memperoleh gambaran yang menyeluruh mengenai hubungan antara dua variabel atau lebih dengan variabel dependen. Hasil penelitian dengan model Fixed Effect menunjukkan EPS dan ROE tidak memiliki pengaruh terhadap struktur modal. Growth opportunity memiliki pengaruh positif dan signifikan terhadap struktur modal. SIZE memiliki pengaruh negatif tetapi signifikan terhadap struktur modal
Gender-related dynamics of exercise tolerance in patients with acute coronary syndrome undergoing the outpatient phase of rehabilitation
Authors: Dovgalyuk Yuri V. , Chistyakova Yulia V. , Vorobyova Tatyana V. , Mishina Irina V.
Published: July 2020

Background. The relevance of the comparative study of exercise tolerance in male and female cardiac patients is due to the need to individualize physical rehabilitation programs.
Aims: to study the impact of gender on exercise tolerance in patients with acute coronary syndrome undergoing a course of rehabilitation in a day hospital.
Methods. 110 patients with acute coronary syndrome were examined: 81 men (73.6%) aged 34 to 75 years and 29 women (26.4%) aged 44 to 74 years. In accordance with the purpose of the study, all patients were exposed to stress testing before and after the end of the three-week rehabilitation course.
Results. According to the analysis of the six-minute walk test and the Bicycle ergometric test, men had better physical endurance than women. Features of hemodynamic indicators during physical activity also correlate with gender: in comparison with men, the maximum physical load in women was accompanied by higher heart rate values. At the end of the rehabilitation course, women had a more pronounced improvement of Bicycle ergometry indicators: a greater increase in maximum power and the percentage of load performed during the test.
Conclusions. The gender differences in exercise tolerance in cardiac patients identified in the study should be taken into account when designing rehabilitation programs.
Factors affecting exercise tolerance in cardiac patients at the third phase of rehabilitation
Authors: Krivonogov Vladislav A. , Yastrebtseva Irina P. , Arkhipova Svetlana L. , Deryabkina Lidiya Yu.
Published: July 2020

Background. Cardiovascular diseases and their complications are the top cause of death and disability; the newly developed rehabilitation methods for these conditions have to be evaluated in terms of tolerability.
Objective. To examine the factors affecting better exercise tolerance in cardiac patients at the third phase of rehabilitation.
Methods. The study performed at IvGMA clinic involved 34 patients undergoing the 3rd phase of rehabilitation with a diagnosis of coronary heart disease: 5 (14%) with acute Q myocardial infarction with ST segment elevation, 3 (9%) without ST segment elevation, 3 (9%) non-Q wave myocardial infarction, 23 (68%) unstable angina pectoris. The age of patients was 4976 years (average 59.47 6.08 years), of which 23 were men and 11 women. Each patient underwent a complete clinical and functional examination to assess the anthropometric data, functional indicators of the respiratory and cardiovascular systems, mental functions, and posturography. The rehab course lasted 15 days and included exercise therapy, gym machine training according to an individually designed program, and dosed walking.
Results. Based on the results of exercise tolerance tests, we formed two case groups: patients of group 1 (n = 14) showed an improvement in the functional class of chronic heart failure according to 6-minute walking test; patients of group 2 (n = 20) showed only insignificant dynamics. Comparison of clinical and functional indicators between the 2 groups revealed that patients of group 1 had more pronounced anxiety and depressive symptoms, and a better preserved function of the respiratory system. A correlation analysis of the total sample of patients detected a correlation relationship between exercise tolerance and functions of the respiratory and cardiovascular systems, anthropometric data, and stabilogram indicators.
Conclusions. A better exercise tolerance in patients with heart problems was associated with better baseline functions of the respiratory and cardiovascular systems, a lower body mass index, and the optimal dose of statins taken. The exercise tolerance increased in parallel with improvement of stabilogram indicators, which suggests a positive effect of targeted individual training of the equilibrium function to improve the functional result of the cardiac rehabilitation process.
Potential effects of COVID-19 on the cardiovascular system
Authors: Mikhaylovskaya Tatyana V. , Yakovleva Nataliya D. , Safronov Maksim A. , Kharlamova Yana I.
Published: July 2020

It is known that coronaviruses can cause acute coronary syndrome, arrhythmias, and aggravation of heart failure, mainly due to a combination of a significant systemic inflammatory response and a local vascular inflammation at the level of arterial plaque. In the context of massive SARS-CoV-2infections and the announced pandemic, there is a need to update management of cardiovascular patients in order to reduce COVID-19-related complications. COVID-19 can cause viral pneumonia, as well as extrapulmonary symptoms and complications. A larger proportion of severe COVID-19 patients had a cardiovascular disease or a high cardiovascular risk. The presence of arterial hypertension and other cardiovascular and cerebrovascular diseases is considered as a factor aggravating the course of the disease and increasing the lethality. Severe cases of COVID-19 were accompanied by acute, often lethal, cardiovascular disorders, with an increase in the level of highly sensitive troponins. There is no reliable evidence that angiotensin-converting enzyme inhibitors and angiotensin receptor blockers can increase the risk of infection or severe course of COVID-19, so there is no reason to cancel them. The role of inhibition of the renin-angiotensin system in the treatment of COVID-19 remains controversial. COVID-19 treatment boils down to supportive care and treatment for complications. Based on the results of the studies, a large number of cardiovascular complications of COVID-19 can be expected. Their therapy should be carried out strictly according to modern guidelines. Recommendations include antiplatelet agents, -blockers, ACE inhibitors and statins.
Principles of rehabilitation of patients with ischemic heart disease after surgical revascularization of myocardium
Authors: Antsygina Lyudmila N. , Kordatov Petr N.
Published: July 2020

The article reflects the modern principles of medical rehabilitation of patients with coronary heart disease who underwent coronary artery bypass surgery. The method of active training therapy with swimming is described, and the dynamics of the functional state of patients at various time points after surgery is also shown. Following the above approaches to compiling personalized programs of rehabilitation measures, taking into account the severity of the intervention, the presence of complications and clinical status, can reduce the factors of atherosclerosis progression, restore the psychological state, increase the physical activity and quality of life of the patient.
O papel da divulgação científica em Astrofísica na velhice: relato de uma experiência na extensão universitária
Authors: Alves-Brito Alan , Massoni Neusa Teresinha
Published: July 2020

A divulgação das ciências exatas para grupos sociais historicamente marginalizados é um dos grandes desafios da extensão universitária neste século. O principal objetivo deste artigo é apresentar os resultados de um projeto de extensão focado na divulgação cultural e científica da Astrofísica para pessoas idosas. Obtivemos, a partir da organização e execução de cursos de difusão científica de Astronomia e Astrofísica, em diferentes contextos, uma excelente aceitação de parte do público idoso, mas identificamos como maior dificuldade o convencimento dos pares na academia de que há interesse e potencial de compreensão de temas científicos nessa faixa etária. Defendemos que esse preconceito aos idosos precisa ser trabalhado e superado. Usando diferentes referenciais teóricos, apresentamos reflexões críticas, bem como discutimos a importância e o impacto de nossas atividades para potencializar e fortalecer a autoestima de pessoas idosas.
Palavras-chave: Educação em Ciências; Cultura científica; Idosos
 
The role of science communication in Astrophysics in old age: report of an experience in university extension
Abstract: The dissemination of the exact sciences to historically marginalized social groups is one of the greatest challenges of university outreach in this century. The main goal of this paper is to present the results of an outreach project focused on the cultural and scientific dissemination of Astrophysics for elderly people. We obtained from the organization and execution of courses of scientific dissemination of Astronomy and Astrophysics, in different contexts, an excellent acceptance by part of the elderly public, but we identified as a greater difficulty the convincing of peers in the academy that there are interest and potential for understanding scientific topics in this age group. We argue that these misconceptions against the elderly need to be worked on and overcome. Using different theoretical references, we present critical reflections, as well as discuss the importance and impact of our activities to enhance and strengthen the self-esteem of elderly people.
Keywords: Science Education; Scientific culture; Elderly
THE ISSUES OF FINANCIAL SUPPORT FOR THE CREATION OF THE RESIDENCE OF THE GRAND DUKE GEORGII MIKHAILOVICH «HARAKS»
Authors: Yefimov A. A.
Published: July 2020

The article deals with an important but little studied issue, connected with the creation of the palace complex in Haraks. The author outlines that many scholars who study the history of construction of architectural monuments mainly concentrate their attention on the art and architectural aspects, while the topic of organizing the construction of buildings and the role of the august customers and officials of the Ministry of the Imperial Court remains in the background. This article, trying to partially fill this gap, addresses the problem of arranging financing for the construction of the residence of Grand Duke Georgii Mikhailovich Kharaks. The author focuses on the problems that arose in this area, related, which was traditionally for most palaces, with cost overruns. It is noted that the Court Department in this case acts exclusively as a source of funds, the decision on the allocation of which is made by the Grand Duke himself.
Circulating Tumor Cells: Atomic Properties And Hostile To Malignant Growth Treatment Checking
Authors: Nogaibayeva Kakharman , Sultanova Gulbarshin
Published: July 2020

Presence of Сirculating tumor cells (CTCs) in blood of disease patients, affirms about a scattering of malignant growth cells to the fringe circulatory system, on the most punctual phases of malignancy improvement and all the time vouches for an unfavorable clinical ebb and flow, particularly it is associated with arrangement of metastases. Moreover, these phones can speak to the base lingering infection and quantitative observing of CTCs level in time of hostile to malignant growth treatment furnishes specialiCDC with important data. For now the job of epithelial-to-mesenchymal travel (EMT) and mesenchymal-to-epithelial travel (MET) in arrangement of different subpopulations CTCs, in development of malignancy forceful properties. In this article we need to demonstrate the reason and issues of our logical exploration - the cytological atomic investigation of flowing tumor cells have separated by the size ward ISET innovation
EL ARTISTA Y LA REVOLUCIÓN
Authors: López Ignacio Javier
Published: July 2020

Sin información.
INDIA – CANADA COLLABORATION IN HIGHER EDUCATION – THE ROAD AHEAD
Authors: Dhulia Hirenkumar
Published: July 2020

Higher education accreditation is a type of quality assurance process under which
services and operations of post-secondary educational institutions or programs are evaluated by an external body to determine if applicable standards are met. If standards are met, accredited status is granted by the agency.
Design of a 4-DOF grounded exoskeletal robot for shoulder and elbow rehabilitation
Authors: Karadeniz Fatih , Aydoğan Özgür Ege , Kazancı Emin Abdullah , Akdogan Erhan
Published: July 2020

The number of cerebrovascular and neuromuscular diseases is increasing in parallel with the rising average age of the world’s population. Since the shoulder anatomy is complex, the number of rehabilitation robots for shoulder movements is limited. This paper presents the mechanical design, control, and testing of 4 degrees of freedom (DOF) grounded upper limb exoskeletal robot. It is capable of four different therapeutic exercises (passive, active assistive, isotonic, and isometric). During the mechanical design, the forces to be exposed to the robot were determined and after the design, the system was tested with strength analysis. Also, a low-cost electromyograph device was developed and integrated into the system to measure muscular activation for feedback and instantaneously muscle activation control for the physiotherapist during the therapy. The system can be used for rehabilitation on the shoulder and elbow.  A PID controller for position-controlled exercises was developed. The test results were presented in terms of simulation and the real system for passive exercise. According to the test results, the developed system can perform the passive exercise and can be used for other therapeutic exercises as well.
Risk Sharing Agreement: Sebuah Ide Awal Mengenai Bentuk Alternatif Pendanaan Pemulihan Kerusakan Lahan Gambut Akibat Kebakaran Hutan dan/atau Lahan di Indonesia
Authors: Setyorini Savitri Nur , Azhari Emir Falah
Published: July 2020

Kebakaran hutan dan/atau lahan gambut di Indonesia telah menyebabkan pencemaran dan perusakan lingkungan hidup yang cukup masif dan memerlukan pemulihan agar lingkungan hidup dapat berfungsi sebagaimana mestinya. Namun, hal ini tidak mudah untuk dilakukan dikarenakan sampai sekarang penghimpunan dana pemulihan lingkungan hidup masih sangat bergantung pada pertanggungjawaban perdata, khususnya melalui proses pengadilan. Terlebih lagi, dana tersebut sulit untuk terkumpul karena jumlahnya yang besar dan proses pengadilan yang memakan waktu lama. Oleh karena itu, artikel ini hendak menganalisis perihal alternatif pendanaan pemulihan lahan gambut yang rusak akibat kebakaan hutan dan/atau lahan melalui sistem risk sharing agreement. Metode penelitian yang digunakan pada tulisan ini adalah yuridis-normatif. Hasil penelitian menunjukkan bahwa risk sharing agreement dapat menjadi alternatif untuk mendanai pemulihan, dengan mekanisme pembiayaan melalui sistem pool antara pelaku usaha, yang pembayaran kontribusinya dapat dilakukan secara ex-ante maupun ex-post, dimana pemantauan bersama antara anggotanya dapat meminimalisasi terjadinya risiko kebakaran hutan dan/atau lahan gambut.Kata kunci: hutan, lahan gambut, kebakaran, dana pemulihan lingkungan hidup, risk sharing agreement
ESTIMATION OF EVACUATION TIME OF PASSENGERS IN AIRCRAFT ACCIDENTS WITH FIRE IN AIRFIELD AREAS
Authors: Suharev Arthur , Shestakov Vladimir , Vinogradov Leonid
Published: July 2020

Statistics show that the majority of aircraft accidents occurs in the vicinity of airfield areas.
Yet the main factors leading to fatalities in these accidents are the forces encountered by human occupants in collision
with obstacles and the presence of fire. It is possible to single out a group of “technically survivable” accidents from
the total number of accidents, in which a crew member or passengers could have survived, if the evacuation took place
in a timely manner. The share of such accidents is about 85–90%. However, up to 40% of passengers die in technically
survivable accidents. Applicable protection systems are only adequate, if the passengers manage to exit the airplane
and get to a safe distance within a limited timeframe. Although these systems have been sufficiently developed; this is
one of the most significant problems in modern aviation. This means, that the study of possibilities and the development
of the methods and means of passenger evacuation in aircraft accidents, specifically in and around airport areas, are
relevant to be addressed.
FERROFLUID FLOW IN MAGNETIC FIELD ABOVE STRETCHING SHEET WITH SUCTION AND INJECTION
Authors: Bognár Gabriella , Hriczó Krisztián
Published: July 2020

The aim of this paper is to investigate the boundary layer of ferrofluid flow induced by a permeable stretching sheet.
Fluid is electrically non-conducting in the presence of non-uniform magnetic field. The governing non-linear partial differential equations
are reduced to non-linear ordinary differential equations by applying a similarity transformation. Numerical solutions are obtained by using
Maple. The effects of the magnetic field, the Reynolds number and the porosity on the velocity and thermal fields are investigated. The impact
of the parameters on the skin friction and the local Nusselt number is numerically examined. The skin friction and heat transfer coefficients
are decreasing with enhancing the stretching, the values of porosity and the ferromagnetic parameter.
MATHEMATICAL ANALYSIS OF SYNTHETIC METERS BASED ON RADAR CHARTS
Authors: Borkowski Boleslaw , Wiliński Artur , Szczesny Wieslaw , Binderman Zbigniew
Published: July 2020

This work contains a description of a technique for constructing two synthetic indicators (measures)
using a graphical presentation in the form of radar maps. The paper presents the structure and properties of indicators and
their formal notation specially created for this purpose using the analogon of a scalar product of vectors. In particular,
it proves the theorem on polygon fields, induced by radar maps, prepared for structural vectors, which allows to build
concentration indicators. In order to demonstrate the usefulness of tools constructed by such means, the example shows how
significant structural changes can be imperceptible when utilizing only the GINI concentration indicator’s value, but are
noticeable when using the concentration indicator developed by the authors. In addition, it illustrates the change in the
value of concentration indicators (GINI and the indicator developed by the authors) on two families of Lorenz curves,
together with changes in concentration. The practical application of this technique for constructing indicators that create
rankings is presented on empirical data on the level of material deprivation in the countries that joined the EU in 2004 and
2007. These data have also been annotated (for comparison purposes) using the so-called overrepresentation maps (Grade
Correspondence Analysis method).
Black Hole Masses of Weak Emission Line Quasars Based on the Continuum Fit Method
Authors: Marculewicz Marcin , Nikolajuk Marek
Published: July 2020

We studied optical-ultraviolet spectral energy distribution of 10 weak emission-line quasars (WLQs) that lie at redshifts z = 0.19 and 1.43 < z < 3.48. The theoretical models of their accretion disk continua are created based on the Novikov–Thorne equations. It allows us to estimate masses of their supermassive black holes (

) and accretion rates. We determined the virial factor for WLQs and note its anticorrelation with the FWHM of the Hβ emission line

). By comparison with the previously estimated BH masses, the underestimation of

is noticed with a mean factor of 4–5, which depends on the measured full width. We proposed a new formula to estimate

in WLQs based on their observed

(Hβ) and luminosities at 5100 Å. In our opinion, WLQs are also normal quasars visible in a reactivation stage.
Hot Dust-obscured Galaxies with Excess Blue Light
Authors: Assef R. J. , Brightman M. , Walton D. J. , Stern D. , Bauer F. E. , Blain A. W. , Díaz-Santos T. , Eisenhardt P. R. M. , Hickox R. C. , Jun H. D. , Psychogyios A. , Tsai C.-W. , Wu J. W.
Published: July 2020

Hot dust-obscured galaxies (Hot DOGs) are among the most luminous galaxies in the universe. Powered by highly obscured, possibly Compton-thick, active galactic nuclei (AGNs), Hot DOGs are characterized by spectral energy distributions that are very red in the mid-infrared yet dominated by the host galaxy stellar emission in the UV and optical. An earlier study identified a subsample of Hot DOGs with significantly enhanced UV emission. One target, W0204–0506, was studied in detail and, based on Chandra observations, it was concluded that the enhanced emission was most likely due to either extreme unobscured star formation (star formation rate > 1000 M
⊙ yr−1) or to light from the highly obscured AGN scattered by gas or dust into our line of sight. Here, we present a follow-up study of W0204–0506 as well as two more Hot DOGs with excess UV emission. For the two new objects we obtained Chandra/ACIS-S observations, and for all three targets we obtained Hubble Space Telescope/WFC3 F555W and F160W imaging. The analysis of these observations, combined with multiwavelength photometry and UV/optical spectroscopy suggests that UV emission is most likely dominated by light from the central highly obscured, hyperluminous AGN that has been scattered into our line of sight, by either gas or dust. We cannot decisively rule out, however, that star formation or a second AGN in the system may significantly contribute to the UV excess of these targets.
Modeling of Galactic Foreground Polarization with Velocity Gradients
Authors: Hu Yue , Lazarian A.
Published: July 2020

The detection of primordial B-mode polarization is still challenging due to the relatively low amplitude compared to the galactic foregrounds. To remove the contribution from the foreground, a comprehensive picture of the galactic magnetic field is indispensable. The Velocity Gradient Technique (VGT) is promising in tracing magnetic fields based on the modern understanding of the magneto-hydrodynamic turbulence. In this work, we apply VGT to an H i region containing an intermediate velocity cloud and a local velocity cloud, which are distinguishable in position–position–velocity space. We show that VGT gives an excellent agreement with the Planck polarization and stellar polarization. We confirm the advantages of VGT in constructing the 3D galactic magnetic field.
Radio Propagation Studies of the Solar Wind in the Era of Parker Solar Probe
Authors: Spangler Steven R.
Published: July 2020

The NASA Parker Solar Probe mission is providing unprecedented measurements of solar wind plasma and plasma turbulence at heliocentric distances as small as 0.125 au, or 26.9 solar radii. Radioastronomical remote sensing measurements of the coronal and solar wind plasma have been made since the 1960s over a heliocentric distance range that overlaps with and extends that of Parker Solar Probe. This paper will compare radio scintillation and Parker Solar Probe results on the heliocentric-distance-dependence of the plasma density variance (where there may be an inconsistency between the two techniques), the speed at which turbulence density irregularities move radially with respect to the Sun, and other topics.
First record and DNA barcode for Ocyurus chrysurus (Lutjanidae) from a coastal lagoon in the southwestern Gulf of Mexico
Authors: Castillo-Rivera Manuel , Constante-Pérez Luis Guillermo , Serrato-Díaz Alejandra
Published: July 2020

A single sub-adult specimen of yellowtail snapper, Ocyurus chrysurus (Bloch, 1791) of 76.08 mm total long (TL) and weighing 4.38 g, was caught on June 7, 2013 over a sandy habitat in the coastal lagoon of La Mancha, Veracruz, Mexico. The capture of O. chrysurus represents a first record for the lagoon and one of the few records for the estuarine systems of the southwestern Gulf of Mexico, even though this species is typical of habitats associated with coral reefs. Similarly, the reported sequence of the mitochondrial COI gene is also the first record of the species for coastal lagoons of this region. Other sequences of the same species were used to evaluate the haplotypic diversity in the western Atlantic Ocean.
Una voz femenina en la poética de la tragedia neoclásica: Margarita Hickey y su «Prólogo» a la traducción de Andrómaca (1789)
Authors: Establier Pérez Helena
Published: July 2020

En 1789, Margarita Hickey publica el primer volumen de sus Poesías varias, sagradas, morales y profanas o amorosas, donde incluye una versión propia de la Andrómaca raciniana (1667) que la convierte en la primera escritora española interesada por la traducción de la tragedia neoclásica, y también en la única dispuesta a aclimatar en España la obra del reputado dramaturgo francés. Pero además, ese volumen se abre con un interesante prólogo en el que la autora reflexiona sobre diferentes aspectos relacionados con el concepto de lo trágico y con la finalidad de la práctica teatral en su conjunto. Este trabajo analiza la contribución de Margarita Hickey al discurso teórico sobre la tragedia en un período en el que las directrices del «reformismo» neoclásico coexisten, no sin cierta tensión, con una concepción del espectáculo teatral más permeable a las exigencias populares y a los recursos propios de los nuevos modelos dramáticos.
Vicente Blasco Ibáñez, Pío Baroja y el comercio del libro en los Estados Unidos
Authors: Ariza González Fernando
Published: July 2020

Tanto Vicente Blasco Ibáñez como Pío Baroja fueron ampliamente publicados en los Estados Unidos y disfrutaron de una relación profesional y personal con sus editores. Sin embargo, el modo en el que ambos afrontaron su entrada en el país les diferenció completamente: Blasco aceptó la modernidad de un mercado mucho más avanzado e incluso aportó ideas para promocionar su obra, mientras que Baroja fue más reaccionario y le costó adaptarse a ese nuevo modo de relacionarse con el público lector. A través de la correspondencia con sus editores vamos a comprobar cómo ambos se manejaron en este nuevo contexto.
Usage of Social Media Among Information Technology Students of Alagappa
Authors: Alagu A.
Published: July 2020

In this study, Alagappa University is used to analyze social media applications among many information technology students. One hundred sixty-three questionnaires were collected from computer science, computer application, library and information science, and computational logistics department students. ANOVA test, chi-square, and independent t-test were used to test hypotheses. ANOVA t-test analysis showed that the frequency of using social media relationship with the department at the rate of f= 5.192, statistical significant level P=0.002. This study reveals that students are using social media sites such as Whatsapp, YouTube, Facebook, Instagram, etc. Information technology students often use social media for their educational activities.
Addressing Sustainability and Industry 4.0 to the Business Model
Authors: Rosário Cabrita Maria do , Duarte Susana
Published: July 2020

Industry 4.0 drivers and sustainability are topics increasingly referred to as part of the firm's strategy. Business value creation must be linked to sustainability and be designed on the road to the Industry 4.0. Technological advancements can bring about countless opportunities for growth and success in achieving humanity's set goals fitting the challenges of sustainability. This seminal work attempts to explore how Industry 4.0 creates opportunities to promote business sustainability. Based on the concepts of sustainability, business model, and the Industry 4.0 drivers, this chapter aims to provide insightful information on the potentials of exploring business model in the age of Industry 4.0.
Luxury or Necessary Goods?
Authors: Tu Yanbin
Published: July 2020

This paper analyzes the income elasticity of household demand for communication and IT products in 23 Organization for Economic Co-operation and Development (OECD) countries during the period from 2008 to 2015. By using panel data analysis, the authors find that both communication and IT products are necessary to the households in the OECD countries as a whole. By using OLS and GLS regression for each country, they compare the change of each one's income elasticity over two periods during 1989 to 2015. The authors find that communication and IT products were considered luxury goods by the households in these countries from 1989 to 2001. However, from 2008 to 2015 such products were considered necessary, luxury, or inferior goods separately by the households in various OECD countries. The trend is that the income elasticity is decreasing, and households in some OECD countries start to take such products as necessary goods. Both panel analysis and regression results suggest that most of households take communication and IT products as necessary.
Comparing Traditional and Online Instructional Delivery
Authors: Stonebraker Peter William , Hidding Gezinus J.
Published: July 2020

This paper first describes the dilemma of online pedagogies. Then it reviews prior research in business courses about the outcomes of online instruction compared with traditional methods. Prior research suffers from various research methodology issues that are categorized. Subsequently, a pre/poststudy of over 200 undergraduate business statistics students is presented using one-sample and two-population tests to address the learning outcomes of instructional delivery. Overall, based on this sound research design, online instructional delivery resulted in learning outcomes, measured on three dimensions, that were found to be statistically equivalent to those of traditional delivery.
Generating Ideas for New Product Development
Authors: Mandal Pratap Chandra
Published: July 2020

Continual innovation is imperative to sustain competition. Companies require generating innovative product ideas and implementing them. Companies require understanding customer requirements and preferences and doing continual innovation to develop offerings for meeting and exceeding customer expectations. New product ideas may come from varied sources and by applying diverse creativity techniques. Companies generate ideas from both internal and external sources. Internal sources include research and development and employees. External sources include customers, competitors, and various other stakeholders. Companies may adopt creativity techniques like crowdsourcing, brainstorming, role-playing, forming forced relationships, morphological analysis, reversing of assumptions about product usage, mind mapping of individuals, and lateral marketing. Companies require creating and encouraging a culture of innovation to generate ideas, implement them, exceed customer expectations, succeed in the completion, and have long-term growth.
Metformin and 2-Deoxyglucose Collaboratively Suppress Human CD4+ T Cell Effector Functions and Activation-Induced Metabolic Reprogramming
Authors: Tan Stefanie Y. , Kelkar Yogeshwar , Hadjipanayis Angela , Shipstone Arun , Wynn Thomas A. , Hall J. Perry
Published: July 2020

Metabolic reprogramming plays a central role in T cell activation and differentiation, and the inhibition of key metabolic pathways in activated T cells represents a logical approach for the development of new therapeutic agents for treating autoimmune diseases. The widely prescribed antidiabetic drug metformin and the glycolytic inhibitor 2-deoxyglucose (2-DG) have been used to study the inhibition of oxidative phosphorylation and glycolysis, respectively, in murine immune cells. Published studies have demonstrated that combination treatment with metformin and 2-DG was efficacious in dampening mouse T cell activation–induced effector processes, relative to treatments with either metformin or 2-DG alone. In this study, we report that metformin + 2-DG treatment more potently suppressed IFN-γ production and cell proliferation in activated primary human CD4+ T cells than either metformin or 2-DG treatment alone. The effects of metformin + 2-DG on human T cells were accompanied by significant remodeling of activation-induced metabolic transcriptional programs, in part because of suppression of key transcriptional regulators MYC and HIF-1A. Accordingly, metformin + 2-DG treatment significantly suppressed MYC-dependent metabolic genes and processes, but this effect was found to be independent of mTORC1 signaling. These findings reveal significant insights into the effects of metabolic inhibition by metformin + 2-DG treatment on primary human T cells and provide a basis for future work aimed at developing new combination therapy regimens that target multiple pathways within the metabolic networks of activated human T cells.
Group 2 Innate Lymphoid Cells Must Partner with the Myeloid–Macrophage Lineage for Long-Term Postviral Lung Disease
Authors: Wu Kangyun , Wang Xinyu , Keeler Shamus P. , Gerovac Benjamin J. , Agapov Eugene V. , Byers Derek E. , Gilfillan Susan , Colonna Marco , Zhang Yong , Holtzman Michael J.
Published: July 2020

Group 2 innate lymphoid cells (ILC2s) are implicated in host defense and inflammatory disease, but these potential functional roles need more precise definition, particularly using advanced technologies to better target ILC2s and engaging experimental models that better manifest both acute infection and chronic, even lifelong, disease. In this study, we use a mouse model that applies an improved genetic definition of ILC2s via IL-7r–conditional Rora gene targeting and takes advantage of a distinct progression from acute illness to chronic disease, based on a persistent type 2 immune response to respiratory infection with a natural pathogen (Sendai virus). We first show that ILC2s are activated but are not required to handle acute illness after respiratory viral infection. In contrast, we find that this type of infection also activates ILC2s chronically for IL-13 production and consequent asthma-like disease traits that peak and last long after active viral infection is cleared. However, to manifest this type of disease, the Csf1-dependent myeloid–macrophage lineage is also active at two levels: first, at a downstream level, this lineage provides lung tissue macrophages (interstitial macrophages and tissue monocytes) that represent a major site of Il13 gene expression in the diseased lung; and second, at an upstream level, this same lineage is required for Il33 gene induction that is necessary to activate ILC2s for participation in disease at all, including IL-13 production. Together, these findings provide a revised scheme for understanding and controlling the innate immune response leading to long-term postviral lung diseases with features of asthma and related progressive conditions.
Control charts for monitoring drip irrigation with different hydraulic heads
Authors: Lopes Allan Remor , Boas Marcio Antonio Vilas , Pazuch Felix Augusto , Ostroski Diane Aparecida , Schmatz Marta Juliana
Published: July 2020

This study monitored a drip irrigation system with different hydraulic heads, using control charts. The study included 25 tests, and was conducted at the Experimental Nucleus of Agricultural Engineering of the State University of Western Paraná, located in the municipality of Cascavel, Paraná. The drip irrigation system was operated by gravity, and had four hydraulic heads (10, 11, 12 and 15 kPa). The uniformity of the system was determined based on uniformity distribution. Uniformity monitoring was performed using Shewhart and exponentially weighted moving-average (EWMA) control charts. An increase in the hydraulic head increased uniformity. The use of 12 and 15 kPa hydraulic heads yielded good performance, whereas 10 and 11 kPa yielded regular performance. The use of control charts proved to be efficient; the Shewhart control chart was more robust, whereas the EWMA control chart, which indicated trends and deviations not shown by Shewhart control charts, was more sensitive.
Review on the diagnosis and antibiotic therapy of otitis media in children
Authors: Abdullahi S. , Ahmad A.S. , Abdulkadir B. , Kabir Y. , Mustapha S. , Hayatudeen M.R. , Usman A.
Published: July 2020

Measurement of background radiation is of great interest for it provides useful information in monitoring environmental radioactivity. The aim of the present study is to provide information and generate database on the natural background radiation dose levels of densely populated Queen Amina Hall, Ahmadu Bello University, Zaria. The radiation dose (outdoor and indoor dose rate) were measured at 29 rooms (Block 1- 4) and their compounds using RADOS survey meter held at 1m above the ground. The measured radiation dose ranged 0.13 nGyh-1 to 0.43 nGyh-1 and 0.54 nGyh-1 to 1.72 nGyh-1 1 for indoor and outdoor respectively. Some of the high values recorded could be attributed due to the contribution of cosmic radiation emanating from the atmosphere as well as the geological settings of the location as there is no any artificial contributing factor within the area. The annual effective doses within the study area was found to be 0.01 mSvy-1 throughout which is quit below the world average value of 0.87 mSvy-1 for natural sources.

Keywords: Radiation dose, Annual effective dose, RADOS meter, Queen Amina
Heavy metal content and microbiological quality of Yaji (complex spice mixture) sold within Kano metropolis
Authors: Abdulsalam L. , Usman R.A.
Published: July 2020

In recent years, food biosafety has been a priority, as such a study was carried out on the microbiological and heavy metal contents of yaji; a complex spice mixture sold within Kano metropolis. A total of nine yaji samples were purchased randomly in several retail stores within Kano metropolis and compared with 3 samples prepared in the laboratory. The result of the analysis showed that the total aerobic mesophilic count, fungal count and coliform count ranged from 3.35×106 - >3.00×107cfu/g, <1.00×103 – 9.60×106cfu/g, and 3.6 - >1100MPN/g respectively. Staphylococcus aureus, Escherichia coli, Salmonella, Enterobacter and Klebsiella species were the bacteria isolated while  Fusarium, Rhizopus and Aspergillus species were the fungi isolated from the samples. The counts obtained were higher than the maximum acceptable levels provided by the ISO and FAO. The ranges of the concentration of heavy metals in dry weight were; lead 0.001 – 0.003, nickel 0.001 - 0.005, copper 0.002 - 0.020, zinc 0.105 – 0.223, iron 0.004 – 0.009 g/Kg. The levels of metals found in the samples were within the standard limits approved by WHO. This study showed that the samples were not contaminated with the studied heavy metals but were found to harbor microorganisms, which can pose serious health hazard to consumers. It is therefore recommended that strict hygienic measures should be taken during yaji preparation since the laboratory prepared yaji were less contaminated. Public enlightenment on the dangers of heavy metals consumption should be provided as continuous/routine consumption may result to the bioaccumulation of harmful metals in the body.

Key words: Microbiological, heavy metal, spice, yaji, Kano.
An analysis of air pollution at some industrial areas of Kano using the AERMOD Model
Authors: Idris Maryam , Darma T.H. , Koki F.S. , Suleiman A. , Ali M.H. , Yarima S.U. , Aliyu A.
Published: July 2020

The effect of pollution on air quality has been a concern for mankind for a long time. In some cases the problem is essentially one of local emissions in a given urban area leading to an adverse effect on air quality in that same area. However, in the general case, the problem is more diverse in that the problem of air pollution has multiplicity effects beyond the point source and these effects are dynamic in nature. Such effects are usually evaluated using dynamical equations. In this study, a comprehensive review on effect of air polluting variables was described on the basis of evaluation of formulation equations of the American Meteorological Society and U.S. Environmental protection Agency Regulatory Model (AERMOD view 9.6.5). The AERMOD model was also used to simulate the dispersion and deposition of the hourly and daily H2S and NO2 concentrations from two domains: Challawa and Sharada industrial estates /areas respectively. The AERMOD model evaluation showed that there was good correlation between the modelled and observed H2S concentration for the daily and hourly comparison at Challawa  (0.53 and 0.91 respectively) but the daily and hourly comparison of H2S at Sharada (0.13 and 0.46 respectively) was seen to drop indicating poor correlation and model skill. However, model evaluation of NO2 shows poor agreements and model skill at Challawa as well as daily comparison at Sharada. However, the modelling shows good agreement (R2= 0.64) in the trend for the hourly value modelled versus observed concentrations at Sharada. Moreover, the mean absolute percentage error (MAPE) for the two pollutants (H2S and NO2) at all the two domains indicates highly accurate result for both daily and hourly concentrations. AERMOD software can therefore be used to estimate the dispersion and deposition of the pollutants at some domains considered in this study.

Key Words: AERMOD model, Air pollutant, Industrial sources, Dispersion and Deposition