bluuebunny/crossref_metadata_2025 huggingface dataset:
Role of the Innovation System in Supporting Regional Agriculture Development: Evidence from Southeast Sulawesi Province Indonesia
Authors: Witjaksono Julian , Rawung Jefny B. Markus , Indrasti Rita , Tan Siti Sehat
Published: September 2020

Agriculture development in the regional autonomy needs more strong effort and more systematic in order to implement the equity of economic growth. This paper aim to describe the data and information related with evaluation worked of regional of research and development institutional in supporting innovation system. This assessment has shown that the development of agriculture innovation system in regional autonomy faced some constrains, viz. lack of human resources development and less supporting research infrastructure of research institutional. Besides, the policy which has been implemented by local government and local parliament did not match with the needed of regional innovation.
POPULATION DYNAMICS, AGGLOMERATION ECONOMIES AND MUNICIPAL SIZE: A LONG-TERM ANALYSIS
Authors: CIOMMI Maria Teresa , ZAMBON laria , SALVATI Luca
Published: September 2020

Under the hypothesis that modifications in municipal boundaries and creation (or suppression) of new administrative units reflect a progressive adjustment toward a more balanced distribution of population over space, the present study investigates the long-term relationship (1928-2012) between urban expansion, population dynamics and municipal area in a growing metropolitan region (Athens, Greece). In expanding regions, municipal size is a key variable outlining the amount and spatial concentration of services and infrastructures, resulting to be functionally related to population density, agglomeration factors, land availability to building and characteristic socioeconomic profiles of local communities. A statistical analysis of the relationship between population density and municipal area provides basic knowledge to policy and planning adjustments toward a more balanced spatial distribution of population and land among the local government units. Descriptive statistics, mapping, correlation analysis and linear regressions were used to assess the evolution of such relationship over a sufficiently long time period. The average municipal area in Athens decreased moderately over time, with a slight increase in spatial heterogeneity. Conversely, the average population density per municipality increased more rapidly, with a considerable reduction in spatial heterogeneity. The observed goodness-of-fit of the linear relationship between population density and municipal area increased significantly over time. The empirical results of our study indicate that municipal size has progressively adjusted to population density across metropolitan areas, determining a more balanced spatial distribution of the resident population, which was consolidated by the recent administrative reform of the local authorities in Greece (the so called ‘Kallikratis’ law). Such conditions represent a base for the informed analysis of the spatial structure of local administrative units and they contribute to the debate on the optimal size of municipalities and other administrative districts with relevant impact on both urban and metropolitan scales of governance.
KOLABORASI PERS, JURNALISTIK DAN WARTAWAN
Authors: Rizal Yose
Published: September 2020

Saat ini dunia jurnalistik tidak hanya milik wartawan professional saja tapi milik semua orang yang ingin berbagi informasi. Karena berbagai informasi yang dibutuhkan khalayak tidak selalu terpenuhi oleh media massa konvensional (umum). Adapun tulisan ini adalah ingin melihat lebih dalam bagaimana peran pers, jurnalistik dan wartawan juga bagaimana seharusnya menjadi seorang jurnalistik yang professional berdasarkan kode etik yang telah ada.

 
Ensuring the technological capability of ship hull structures when creating an electronic model
Authors: Лебедева Е.Г. , Сомпольцева А.А.
Published: September 2020

В статье рассмотрен процесс создания системы и механизма управления технологичностью судовых конструкций, сделана попытка создания единого подхода к теоретической оценке технологичности. Определены основные задачи обеспечения технологичности судовых корпусных конструкций на этапе проектирования и подготовки производства, а также пути реализации этих задач в условиях создания информационной модели конструкции и ее дальнейшего применения в процессе конструкторско-технологической подготовки судостроительного производства. Приведен ожидаемый эффект внедрения от решения проблемы обеспечения технологичности судовых корпусных конструкций на судостроительном предприятии. Представлена информационная модель судовой корпусной конструкции с учетом оценки параметров технологичности и показана взаимосвязь между рассматриваемыми объектами технологической схемы. Проведен анализ проработки деталей судовых корпусных конструкции на технологичность. Приведена схема системы анализа технологичности судовой корпусной конструкции. Определен характер проблемы обеспечения технологичности и направление разработки структуры и создания единой методики проработки деталей на технологичность.

The article considers the process of creating a system and mechanism for managing the manufacturability of ship structures, and attempts to create a unified approach to the theoretical assessment of manufacturability. The main tasks of ensuring the manufacturability of ship hull structures at the design and pre-production stage, as well as ways to implement these tasks in the conditions of creating an information model of the structure and its further application in the process of design and technological preparation of shipbuilding production, are defined. The expected implementation effect of solving the problem of ensuring the manufacturability of ship hull structures at a shipbuilding enterprise is given. An information model of a ship's hull structure is presented, taking into account the assessment of technological parameters, and the relationship between the considered objects of the technological scheme is shown. The analysis of working out details of ship hull structures on manufacturability is carried out. The scheme of the system for analyzing the manufacturability of a ship's hull structure is presented. The nature of the problem of ensuring manufacturability and the direction of developing the structure and creating a unified methodology for working out details for manufacturability are determined.
Scientific catalog of the book collections of «Studion» as a «Byzantine» library: principles and features of formation
Authors: Kryvenko Marharyta
Published: September 2020

The article highlights the principles and sources of material selection for the Catalog; its structure and content are disclosed; attention is paid to the specifics of the processing and bibliography of Greek prints, a sample description of one of them is given.

The already completed scientific catalog is the first attempt to identify, elaborate, describe and return to the scientific and public discourse the Byzantine materials of the Lviv «Studion» library, which Metropolitan Andrey has purposefully collected for over thirty years, to promote, first of all, theological research work, education of highly educated clergy, which would correspond to the level of knowledge of Western apologists of the time.

The main source for the formation of the Catalog were the copies of the Byzantine-Christian content, which we found, first of all, in the retrospective fund of the Vasyl Stefanyk National Scientific Library of Ukraine in Lviv and other Lviv cultural and educational institutions. These sources were 279 searched, first of all, by studying the reference and bibliographic apparatus (DBA) of the Lviv academic institution; elaboration of manuscript materials, in particular, letters of the Italian theologian Father Aurelio Palmieri to Metropolitan Andrey Sheptytskyi in 1907–1914, stored in the Central State Historical Archive of Ukraine in Lviv; acquaintance with the reference and historical and literary literature etc.

Thus, the Catalog includes the multi-genre, multi-sectoral and multilingual literature of the 15th – first half of the twentieth century, which determined the specifics and uniqueness of the Studion collection and which has not yet been investigated. Bibliographic descriptions of Greek and Latin prints are accompanied by Ukrainian translation of their titles.

A special place is given to the problem of bibliography of Greek prints (transliteration and unification) as an important component of the national cultural heritage.

On the example of one edition, an attempt was made to demonstrate the search algorithm and bibliographic stylistics, which is characteristic of the presented Catalog.

The bibliographic reconstruction of the Studion Book Collection will show the depth of the idea of the Metropolitan of Galicia to create such a special library institution; will enlighten the participation of Fr. Klymentii Sheptytskyi in the organization and management of the library; will allow to define more fully its contents (thematic) and chronological features and multilingual character; will contribute to the study and discovery of not only valuable retrospective holdings of the academic library, but also a significant component of the national historical and cultural heritage.

Keywords: Metropolitan Andrey Sheptytskyi, bookstore of «Studion» in Lviv, Byzantine materials (Byzantine literature), Greek books, printed catalog.
PROFESSIONALISM AND ENTREPRENEURIAL ACTION HOUSEKEEPER HOTEL
Authors: Sulaiman Debbi , B.Limbing Lexi Pranata
Published: September 2020

The purpose of this study is to determine the performance of hotel housekeeper professionalism and entrepreneurial action. The research method used a qualitative approach. Data were collected using interviews and observations. For data analysis, the present study used the technique of Miles and Huberman (1994). This study found that entrepreneurial action from hotel housekeepers was identified by a number of attributes such as passion, open mindedness to change, teamoriented attitude, competence and ability towards housekeeping, interpersonal skills, ability to control personal emotions, professional ethics, leadership spirit and perfectionist.
The Diary of a Suicidal Youth: A Linguistic Analysis
Authors: Lester D
Published: September 2020

A Linguistic Analysis using a Computer Program (LIWC) for the 58 entries over the last year of life of a young woman who died by suicide revealed 3 significant changes and 5 trends over time. In particular, the woman showed more anger as her death grew closer, and she focused less on the future. These results differ from those obtained from other studies of diaries, suggesting the importance of a psychological typology for suicides.
Legal Protection of Hospital Patients in the Corona Virus Pandemic Period
Authors: Haggai Yoga Khirari , Aritonang Erikson , Riata M Pandini
Published: September 2020

This study aims to explain the legal protection for patients during the Covid-19 pandemic and the protection mechanism for patients as consumers. This research used doctrinal research. Basically, health development involves all aspects of life, physical, mental and socio-economic. In the growth of health development so far, there has been a change in orientation, both value ​​and thought, especially regarding effort to solve problem in the health sector which are influenced by politic, economic, socio-cultural, defence and security as well as science and technology. The change of orientation will affect the implementation process of health development. Health development, which is basically the responsibility of the state, becomes very important because the private sector also participates in creating a product in the health sector. This society is generally referred to as consumer. Indonesia and all over the world are currently in a pandemic of the Covid-19 virus, where the virus is spreading so fast. Not yet found anti-virus against this virus, the only way is that everyone is obliged to maintain immunity in the body. But it is very unfair for other patients, currently the focus of medical personnel and hospital is to deal with the Covid-19 outbreak, so that the rights of other patients cannot be fulfilled.
Personal & Professional Efficiency of University Teachers in Relation to their Professional Burnout
Authors: R Vijaya Anuradha, , M Shailaja, , G Lokanadha Reddy, , S Vijaya Vardhini,
Published: September 2020

Stress at work place is a barometer of the health of an organization. Prolonged stress in any employee leads to professional burnout. This study examined the relationship between professional burnout and occupational stress due to personal & professional efficiency of teachers working at university level. Rating Scales were administered on a sample of 955 university teachers from 9 universities of Andhra Pradesh and Tamil Nadu who were chosen by using Simple Random Sampling Technique. The statistical techniques employed were percentage, mean, SD, mean ± 1SD, and also correlations computed to analyze the obtained data. Results of the study revealed that around 86% of university teachers are experiencing moderate and high levels of professional burnout and around 60% of them are showing moderate level of occupational stress due to personal & professional efficiency. Further, correlation studies revealed that there is a significant positive relationship between professional burnout and occupational stress due to personal & professional efficiency. The results reinforce the need for interventions in strengthening and reinforcing teacher’s self-confidence and positive attitude, and weakening the stress and burnout causing factors. Much of the stress and burnout can be minimized through support, persistence, problem solving, active decision making and planning, organizational adaptability and developing good human relations.
HAWC+ Far-infrared Observations of the Magnetic Field Geometry in M51 and NGC 891
Authors: Jones Terry Jay , Kim Jin-Ah , Dowell C. Darren , Morris Mark R. , Pineda Jorge L. , Benford Dominic J. , Berthoud Marc , Chuss David T. , Dale Daniel A. , Fissel L. M. , Goldsmith Paul F. , Hamilton Ryan T. , Hanany Shaul , Harper Doyal A. , Henning Thomas K. , Lazarian Alex , Looney Leslie W. , Michail Joseph M. , Novak Giles , Santos Fabio P. , Sheth Kartik , Siah Javad , Stacey Gordon J. , Staguhn Johannes , Stephens Ian W. , Tassis Konstantinos , Trinh Christopher Q. , Vaillancourt John E. , Ward-Thompson Derek , Werner Michael , Wollack Edward J. , Zweibel Ellen G. ,   (HAWC+ Science Team)
Published: September 2020

Stratospheric Observatory for Infrared Astronomy High-resolution Airborne Wideband Camera Plus polarimetry at 154 μm is reported for the face-on galaxy M51 and the edge-on galaxy NGC 891. For M51, the polarization vectors generally follow the spiral pattern defined by the molecular gas distribution, the far-infrared (FIR) intensity contours, and other tracers of star formation. The fractional polarization is much lower in the FIR-bright central regions than in the outer regions, and we rule out loss of grain alignment and variations in magnetic field strength as causes. When compared with existing synchrotron observations, which sample different regions with different weighting, we find the net position angles are strongly correlated, the fractional polarizations are moderately correlated, but the polarized intensities are uncorrelated. We argue that the low fractional polarization in the central regions must be due to significant numbers of highly turbulent segments across the beam and along lines of sight in the beam in the central 3 kpc of M51. For NGC 891, the FIR polarization vectors within an intensity contour of 1500

are oriented very close to the plane of the galaxy. The FIR polarimetry is probably sampling the magnetic field geometry in NGC 891 much deeper into the disk than is possible with NIR polarimetry and radio synchrotron measurements. In some locations in NGC 891, the FIR polarization is very low, suggesting we are preferentially viewing the magnetic field mostly along the line of sight, down the length of embedded spiral arms. There is tentative evidence for a vertical field in the polarized emission off the plane of the disk.
Near-infrared Characterization of Four Massive Stars in Transition Phases*
Authors: Cochetti Yanina R. , Kraus Michaela , Arias María L. , Cidale Lydia S. , Eenmäe Tõnis , Liimets Tiina , Torres Andrea F. , Djupvik Anlaug A.
Published: September 2020

Massive stars typically undergo short-lived post-main-sequence evolutionary phases with strong mass loss and occasional mass eruptions. Many of such massive stars in transition phases have been identified based on their dusty envelopes. The ejected material often veils the stellar photospheres so that the central stars cannot be assigned proper spectral types and evolutionary stages. The infrared spectral range has proved to be ideal for the classification of evolved massive stars and for the characterization of their environments. To improve our knowledge on the central stars of four such dust-enshrouded objects, [GKF 2010] MN 83, [GKF 2010] MN 108, [GKF 2010] MN 109, and [GKF 2010] MN 112, we collect and present their first medium-resolution K-band spectra in the 2.3–2.47 μm region and discuss the location of the stars in the JHK color–color diagram. We find that the emission-line spectra of both MN 83 and MN 112 show characteristics typically seen in luminous blue variable (LBV) stars. In addition, we propose that the presence and strength of the newly reported Mg ii lines might be used as a new complementary criterion to identify LBV candidates. The spectra of the other two objects imply that MN 108 is an O-type supergiant, whereas MN 109 could be an LBV candidate in its active phase. We derive lower limits for the reddening toward the stars and find that three of all dereddened fall into the region of confirmed LBVs.
The Sloan Digital Sky Survey Reverberation Mapping Project: Mg ii Lag Results from Four Years of Monitoring
Authors: Homayouni Y. , Trump Jonathan R. , Grier C. J. , Horne Keith , Shen Yue , Brandt W. N. , Dawson Kyle S. , Alvarez Gloria Fonseca , Green Paul J. , Hall P. B. , Hernández Santisteban Juan V. , Ho Luis C. , Kinemuchi Karen , Kochanek C. S. , Li Jennifer I-Hsiu , Peterson B. M. , Schneider D. P. , Starkey D. A. , Bizyaev Dmitry , Pan Kaike , Oravetz Daniel , Simmons Audrey
Published: September 2020

We present reverberation mapping results for the Mg ii
λ2800 Å broad emission line in a sample of 193 quasars at

0.35
<
z
<
1.7

with photometric and spectroscopic monitoring observations from the Sloan Digital Sky Survey Reverberation Mapping project during 2014–2017. We find significant time lags between the Mg ii and continuum lightcurves for 57 quasars, and define a “gold sample” of 24 quasars with the most reliable lag measurements. We estimate false-positive rates for each lag that range from 1% to 24%, with an average false-positive rate of 11% for the full sample and 8% for the gold sample. There are an additional ∼40 quasars with marginal Mg ii lag detections, which may yield reliable lags after additional years of monitoring. The Mg ii lags follow a radius–luminosity relation with a best-fit slope that is consistent with

α
=
0.5

, but with an intrinsic scatter of 0.36 dex that is significantly larger than found for the Hβ radius–luminosity relation. For targets with SDSS-RM lag measurements of other emission lines, we find that our Mg ii lags are similar to the Hβ lags and ∼2–3 times larger than the C iv lags. This work significantly increases the number of Mg ii broad-line lags and provides additional reverberation-mapped black hole masses, filling the redshift gap at the peak of supermassive black hole growth between the Hβ and C iv emission lines in optical spectroscopy.
Simulating Jets from a Neutron Star Companion Hours after a Core-collapse Supernova
Authors: Akashi Muhammad , Soker Noam
Published: September 2020

We conduct three-dimensional hydrodynamical simulations to explore the interaction of the jets that a neutron star (NS) companion to a type Ic or type Ib core-collapse supernova (CCSN) launches a few hours after explosion with the ejecta of the CCSN. We assume that an NS companion at 5 R
⊙ from the exploding star accretes mass from the slower inner ejecta through an accretion disk, and that the disk launches two opposite jets. Although the energy of the jets is only about one percent of the total energy of the ejecta, it is comparable to the energy of the slower inner part of the ejecta. We find that the jets inflate one low-density hot bubble to one side of the ejecta, and that this bubble expands to influence ejecta gas up to expansion velocities of

. The postshock jets’ material develops a large meridional flow and small vortexes. The boundary between the ejecta and jets’ postshock gases is unstable. The instabilities and vortexes mix jets’ gas with the ejecta. We expect such a hot bubble to contribute to the light curve of CCSNe that are progenitors of binary NS systems, in particular to observers on the side of the bubble.
Modeling Unresolved Binaries of Open Clusters in the Color–Magnitude Diagram. I. Method and Application of NGC 3532
Authors: Li 李 Lu 璐 , Shao 邵正 Zhengyi 义 , Li 李昭 Zhao-Zhou 洲 , Yu 俞锦 Jincheng 程 , Zhong 钟 Jing 靖 , Chen 陈 Li 力
Published: September 2020

The binary properties of open clusters place crucial constraints on star formation theory and clusters’ dynamical evolution. We develop a comprehensive approach that models the color–magnitude diagram (CMD) of the cluster members as a mixture of single stars and photometric unresolved binaries. This method enables us to infer the binary properties, including the binary fraction f
b and binary mass ratio distribution index γ

q
when a power law is assumed, with high accuracy and precision, which was unfeasible in conventional methods. We employ a modified Gaussian process to determine the main-sequence ridgeline and its scatter from the observed CMD as model input. As a first example, we apply the method to the open cluster NGC 3532 with the Gaia DR2 photometry. For the cluster members within a magnitude range corresponding to FGK dwarfs, we obtain f
b = 0.267 ± 0.019 and γ

q
 = −0.10 ± 0.22 for binaries with mass ratio q > 0.2. The f
b value is consistent with the previous work on NGC 3532 and smaller than that of field stars. The close-to-zero γ

q
indicates that the mass ratios of binaries follow a nearly uniform distribution. For the first time, we unveil that the stars with smaller mass or in the inner region tend to have lower f
b and a more positive value of γ

q
due to the lack of low mass ratio binaries. The clear dependences of binary properties on mass and radius are most likely caused by the internal dynamics. In this scheme, binaries with smaller primary mass or lower mass ratio have smaller binding energy; hence, they are more vulnerable to dynamical disruption, especially in the inner region where stars interact more frequently.
Amplification of Brightness Variability by Active-region Nesting in Solar-like Stars
Authors: Işık Emre , Shapiro Alexander I. , Solanki Sami K. , Krivova Natalie A.
Published: September 2020

Kepler observations revealed that hundreds of stars with near-solar fundamental parameters and rotation periods have much stronger and more regular brightness variations than the Sun. Here we identify one possible reason for the peculiar behavior of these stars. Inspired by solar nests of activity, we assume that the degree of inhomogeneity of active-region (AR) emergence on such stars is higher than on the Sun. To test our hypothesis, we model stellar light curves by injecting ARs consisting of spots and faculae on stellar surfaces at various rates and nesting patterns, using solar AR properties and differential rotation. We show that a moderate increase of the emergence frequency from the solar value combined with the increase of the degree of nesting can explain the full range of observed amplitudes of variability of Sun-like stars with nearly the solar rotation period. Furthermore, nesting in the form of active longitudes, in which ARs tend to emerge in the vicinity of two longitudes separated by 180°, leads to highly regular, almost sine-like variability patterns, rather similar to those observed in a number of solar-like stars.
Pair Separation in Parallel Electric Field in Magnetar Magnetosphere and Narrow Spectra of Fast Radio Bursts
Authors: Yang Yuan-Pei , Zhu Jin-Ping , Zhang Bing , Wu Xue-Feng
Published: September 2020

When the magnetosphere of a magnetar is perturbed by crustal deformation, an electric field E
∥ parallel to the magnetic field line would appear via Alfvén waves in the charge starvation region. The electron–positron pair bunches will be generated via two-stream instability in the magnetosphere, and these pairs will undergo charge separation in the E
∥ and in the meantime emit coherent curvature radiation. Following the approach of Yang & Zhang, we find that the superposed curvature radiation becomes narrower due to charge separation, with the width of spectrum depending on the separation between the electron and positron clumps. This mechanism can interpret the narrow spectra of fast radio bursts (FRBs), in particular, the spectrum of Galactic FRB 200428 recently detected in association with a hard X-ray burst from the Galactic magnetar SGR J1935+2154.
The Large Far Ultraviolet Variations of α Cir A and α Cir B as Recorded by IUE and FUSE
Authors: Monier Richard
Published: September 2020

Inspection of archival IUE spectra of the bright rapidly oscillating Ap star α Cir A reveal large flux variations from 1600 to 2000 Å over the 4.4790 day rotational period. At 1965 Å, where the flux reaches a maximum, the flux more than doubles between phases of maximum and minimum flux. These large flux variations are most likely caused by the passage of spots or belts of overabundant elements in the line of sight as the star rotates. The FUSE spectrum of α Cir B, the K5V dwarf close to α Cir A, contains several emission lines of O vi, C iii and C ii which are probably formed in the transition region and the chromosphere of this star. The O vi lines completely disappear over a timescale of a few days which probably reflects rotationaly modulated magnetic activity.
Spectral Emission Features of SiO2 Spheres
Authors: Petrov Dmitry , Savushkin Alexander , Zhuzhulina Elena
Published: September 2020

Silicate dust particles are part of many astronomical objects such as comets and circumstellar discs. In the spectrum, silicates exhibit a number of characteristic emission features. In this paper, we studied the contribution of quartz (SiO2) particles to these features. Using the Mie theory, calculations were made of the intensity of light scattered by such particles. Two spectral features were found in the spectrum—near 9 μm and near 20.5 μm. The main properties of these features are investigated. It is established, that the 9 μm feature is much narrower than the 20.5 μm; with an increase in the size of the scattering particle from very small values the position of spectral features (both 9 μm and 20.5 μm) shifts toward longer wavelengths; the 9 μm feature cannot be clearly seen with particle sizes greater than 18 μm, while the 20.5 μm feature is apparent even at particle radius 60 μm.
Poursuivre le développement durable dans une ville chinoise. L’État local chinois et l’incertitude : un aperçu à partir du cas de Yangzhou
Authors: Romano Giulia C.
Published: September 2020

Cet article interroge le cas du transfert de la « rénovation urbaine douce », une approche allemande de rénovation urbaine, à la ville de Yangzhou, en Chine. Combinant une analyse du transfert à celle de l’apprentissage, il montre que la configuration de l’État local chinois limite les capacités de la ville de poursuivre l’apprentissage et le transfert, laissant plutôt place à l’incertitude. Faute d’application des lois et des règlements, l’action du gouvernement local ne peut pas être prévisible. Il en résulte que les capacités de l’administration locale d’institutionnaliser cette approche de développement urbain durable sont limitées.
Efficacy of a Cycloplegic Agent Administered as a Spray in the Pediatric Population
Authors: Vagge Aldo , Del Noce Chiara , Pellegrini Marco , Cappelli Francesca , Musolino Maria , Bernabei Federico , Giannaccare Giuseppe , Traverso Carlo E.
Published: September 2020

Purpose:

To evaluate the efficacy and tolerability of cyclopentolate 1% administered as a spray in pediatric patients between 3 and 6 years old.

Methods:

In this prospective, randomized, parallel group study, healthy volunteers were randomly assigned to receive cyclopentolate 1% as a single drop or a single puff into closed eyes.

Results:

There were 61 patients included in the study; 31 received cyclopentolate 1% as drops and 30 received cyclopentolate 1% as spray. The mean age at presentation was 4.5 ± 1.07 years (range: 3 to 6 years) and 4.2 ± 1.06 years (range: 3 to 6 years) in the drops and spray groups, respectively. The distress level was significantly lower at the time of receiving cyclopentolate as a spray (
P
< .0001), with the exception of patients aged 6 years. There were no significant differences in pupil diameter between the two groups (
P
= .51), whereas 5 of 30 patients (16.6%) with dark irises who received cyclopentolate spray did not have adequate cycloplegia to allow for accurate refraction.

Conclusions:

Cycloplegia achieved with cyclopentolate 1% administered as a spray may be an option in uncooperative children because it is less distressing compared to cyclopentolate 1% drops. However, physicians should be aware that cycloplegia obtained is only partially effective in children with dark irises.

[
J Pediatr Ophthalmol Strabismus
. 2020;57(5):301–304.]
Clinical Evaluation of Individualized and Navigated Microsecond Pulsing Laser for Acute Central Serous Chorioretinopathy
Authors: Volodin Pavel L. , Ivanova Elena V.
Published: September 2020

BACKGROUND AND OBJECTIVE:

A computational model has predicted parameters for using a navigated microsecond pulsing laser system to treat central serous chorioretinopathy (CSC).

PATIENTS AND METHODS:

A prospective, single-center, interventional case series was conducted for patients with acute CSC who were enrolled following screening and informed consent. Treatment involved laser pulse duration of 50 μs, 2.4% Duty Cycle, 100 μm spot size, and 10 ms pulse duration.

RESULTS:

Average best-corrected visual acuity (decimal) of 12 patients improved from 0.86 ± 0.03 at baseline to 0.97 ± 0.01 at 3 months. Baseline central retinal thickness decreased from 452.58 μm ± 24.53 μm at baseline to 249.25 μm ± 2.92 μm at 3 months. Retinal sensitivity improved from 24.1 dB ± 1.09 dB at baseline to 28.98 dB ± 0.23 dB at 3 months. In all cases, subretinal fluid was resorbed.

CONCLUSION:

The parameter sets derived from the computer model can be applied safely and effectively for CSC treatment using the navigated microsecond pulsing laser system.

[
Ophthalmic Surg Lasers Imaging Retina
. 2020;51:512–520.]
A weak Galerkin finite element method for nonlinear conservation laws
Authors: Ye Xiu , Zhang Shangyou , Zhu Peng
Published: September 2020

A weak Galerkin (WG) finite element method is presented for nonlinear conservation laws. There are two built-in parameters in this WG framework. Different choices of the parameters will lead to different approaches for solving hyperbolic conservation laws. The convergence analysis is obtained for the forward Euler time discrete and the third order explicit TVDRK time discrete WG schemes respectively. The theoretical results are verified by numerical experiments.
Dynamic Spatial Panel Models: Networks, Common Shocks, and Sequential Exogeneity
Authors: Kuersteiner Guido M. , Prucha Ingmar R.
Published: September 2020

This paper considers a class of generalized methods of moments (GMM) estimators for general dynamic panel models, allowing for weakly exogenous covariates and cross‐sectional dependence due to spatial lags, unspecified common shocks, and time‐varying interactive effects. We significantly expand the scope of the existing literature by allowing for endogenous time‐varying spatial weight matrices without imposing explicit structural assumptions on how the weights are formed. An important area of application is in social interaction and network models where our specification can accommodate data dependent network formation. We consider an exemplary social interaction model and show how identification of the interaction parameters is achieved through a combination of linear and quadratic moment conditions. For the general setup we develop an orthogonal forward differencing transformation to aid in the estimation of factor components while maintaining orthogonality of moment conditions. This is an important ingredient to a tractable asymptotic distribution of our estimators. In general, the asymptotic distribution of our estimators is found to be mixed normal due to random norming. However, the asymptotic distribution of our test statistics is still chi‐square.
Leave‐Out Estimation of Variance Components
Authors: Kline Patrick , Saggio Raffaele , Sølvsten Mikkel
Published: September 2020

We propose leave‐out estimators of quadratic forms designed for the study of linear models with unrestricted heteroscedasticity. Applications include analysis of variance and tests of linear restrictions in models with many regressors. An approximation algorithm is provided that enables accurate computation of the estimator in very large data sets. We study the large sample properties of our estimator allowing the number of regressors to grow in proportion to the number of observations. Consistency is established in a variety of settings where plug‐in methods and estimators predicated on homoscedasticity exhibit first‐order biases. For quadratic forms of increasing rank, the limiting distribution can be represented by a linear combination of normal and non‐centralχ2random variables, with normality ensuing under strong identification. Standard error estimators are proposed that enable tests of linear restrictions and the construction of uniformly valid confidence intervals for quadratic forms of interest. We find in Italian social security records that leave‐out estimates of a variance decomposition in a two‐way fixed effects model of wage determination yield substantially different conclusions regarding the relative contribution of workers, firms, and worker‐firm sorting to wage inequality than conventional methods. Monte Carlo exercises corroborate the accuracy of our asymptotic approximations, with clear evidence of non‐normality emerging when worker mobility between blocks of firms is limited.
Las “casas a la malicia” en Madrid y su transformación en edificios de entramado de madera “modernos” (1656-1868): construcciones originales vs. estructuras añadidas
Authors: González-Redondo Esperanza
Published: September 2020

La construcción de muchos edificios del Centro histórico de Madrid es aún desconocida. El descubrimiento y análisis de innumerables proyectos antiguos, y la comprobación con los edificios conservados, demuestra que algunos aparentemente ‘modernos’ están levantados sobre otros preexistentes. En los huertos de las ‘casas a la malicia’ (1560-1788), y antes de demoler la muralla (1868), se construyeron nuevas crujías, escaleras y patios. Además, sobre los primitivos muros de fachada, de albañilería y ‘doble hoja’, y las ‘paredes maestras’ entramadas, se añadieron nuevos forjados. El estudio y datación de casos-tipo, determinando sus sectores, frontal y trasero; el dimensionado de los muros exteriores e interiores; y las discordancias estructurales en planta y sección, revelarán este proceso. Se constatan los invariantes constructivos ‘antiguos’, justificando su conservación intacta en edificios de poca altura; y en otros, la formación del patio, la construcción de nuevos forjados, y su transformación en edificios de vivienda colectiva.
Ciencias agrarias chilenas entre 1989 y 2016: redes, colaboración científica y comunidades de investigación
Authors: Padilla-Navarro Patricio , Vallejos-Romero Arturo
Published: September 2020

Se analizaron 6.973 artículos de la base de datos WoS pertenecientes a las ciencias agrarias chilenas entre los años 1989 y 2016. Se realizaron análisis enfocados a las redes de investigación, colaboración científica y comunidades de investigación. El estudio constató una estructura predominantemente colaborativa de los investigadores vinculados a este campo científico, con predominio de las universidades y con grupos de investigación con bajo nivel de densidad, concentración de vínculos y alto número de grupos de investigación, pero con bajo nivel de relación entre sí.
Análisis bibliométrico de la Revista Española de Documentación Científica desde su inclusión en la Web of Science (2008-2018)
Authors: Cascón-Katchadourian Jesús , Moral-Munoz Jose A. , Liao Huchang , Cobo Manuel J.
Published: September 2020

En este trabajo se presenta un análisis bibliométrico del contenido científico de la Revista Española de Documentación Científica durante el periodo 2008-2018, usando como metodología el análisis de rendimiento y los mapas de la ciencia. En los resultados se muestran, por un lado, algunos de los indicadores bibliométricos de rendimiento básicos, como son: número de documentos publicados, citas obtenidas, evolución del Factor de Impacto, Índice-h, así como los autores más productivos y más citados y la distribución geográfica de las publicaciones. Por otro lado, este análisis muestra la evolución conceptual de la revista basada en los mapas de la ciencia. En la discusión se comparan estos resultados con otros estudios anteriores, que existen sobre la revista, de evolución temática, y sobre la documentación a nivel nacional e internacional. Se concluye indicando cuales son los autores, países y las dos grandes áreas temáticas que destacan en esta revista: bibliometría y web.
Conocimiento sobre temas de Derechos de Autor en estudiantes de Biblioteconomía y Documentación
Authors: Arias-Coello Alicia , Simón-Martín José , Sulé-Duesa Andreu , Alvite-Díez Mª Luisa , Faba-Pérez Cristina , Caridad-Sebastián Mercedes , Agustín-Lacruz Carmen , Marco-Cuenca Gonzalo , Merlo-Vega José Antonio
Published: September 2020

El nivel de conocimiento en temas sobre Derechos de Autor en estudiantes de Biblioteconomía y Documentación fue estudiado por medio de una encuesta web como parte de un proyecto de investigación plurinacional. El estudio se centró en el conocimiento, opiniones y experiencias de los estudiantes en varios aspectos de la legislación sobre Derechos de Autor y Propiedad Intelectual, así como en su formación. Los resultados muestran que los estudiantes españoles están familiarizados con las leyes sobre Derechos de Autor, y aquéllas relacionadas a nivel internacional, así como en las licencias Creative Commons. Sin embargo, la mayoría de los encuestados mostraron escaso conocimiento en asuntos relacionados con la protección de derechos en el entorno digital o la problemática sobre Derechos de Autor a nivel internacional. Por tanto, existe la necesidad de mejorar la información y el conocimiento acerca de los temas
relacionados con los Derechos de Autor en los curricula de los estudiantes de Biblioteconomía y Documentación, dado que los problemas sobre Derechos de Autor son actualmente una parte relevante de la experiencia de los profesionales de la información, y continuarán siéndolo en el futuro.
Los ecos indianos del gran levantamiento de Tupac Amaru y su proyección peninsular: un episodio olvidado
Authors: Moreno Cebrián Alfredo , Chauca García Jorge
Published: September 2020

El movimiento rebelde encabezado por Tupac Amaru II entre 1780 y 1781 no se circunscribió a unas coordenadas espacio-temporales demarcadas por su repercusión en el escenario peruano y altoperuano. En este trabajo analizamos el tortuoso itinerario seguido por los prisioneros tupamaristas tanto en su paso por Chile como en su destino final en España. En el caso chileno se incidirá en el temor que entre las autoridades provocó la presencia temporal de estos reos sobre todo como posible contagio social. En lo que se refiere a los escasos reos tupamaristas que sobrevivieron a los naufragios de los navíos San Pedro de Alcántara y El Peruano y llegaron a España, se centrará la atención en sus trayectorias hasta que fueron confinados en los presidios norteafricanos.
La masonería española en Cuba y Marruecos: ideales, imaginarios y utopías coloniales
Authors: Aguiar Bobet Valeria
Published: September 2020

En este artículo se compara el papel de la masonería española en Cuba y Marruecos a partir de su situación colonial, haciendo hincapié en las variables que subyacen detrás de cada una: cómo legitima o justifica la masonería su actuación en las colonias, si se establece o no como un elemento más de colonización, pero, sobre todo, si termina por configurar un modelo colonial ideal que derivaría en el discurso proyectado en el protectorado español de Marruecos. Con tal fin, la sociología del imaginario nos aportará las bases metodológicas para analizar el discurso masónico y los preceptos que lo configuran, utilizando, como base documental, las fuentes producidas por las instancias masónicas, boletines y periódicos, así como la bibliografía especializada en esta temática.
Ajustar la representación a las consecuencias del progreso. La reforma constitucional argentina de 1898 y los dilemas de un federalismo
Authors: Gallucci Lisandro
Published: September 2020

Este artículo ofrece un análisis de la reforma de la Constitución argentina practicada en 1898, mayormente desatendida por la historiografía sobre el periodo. En particular, el estudio apunta a explorar las razones por las cuales la convención reformadora introdujo ciertos cambios en el sistema representativo federal, al mismo tiempo que descartó otros. Se intenta así contribuir a una imagen más compleja de la política argentina entre 1880 y 1916.
Ecuador, los inmigrantes y la propaganda fascista (1922-1938)
Authors: Pagnotta Chiara
Published: September 2020

En este texto se analiza el tema de la propaganda fascista en Ecuador, dirigida por un lado a la opinión pública y al gobierno ecuatoriano y por otro al grupo italiano que vivía en Ecuador en el periodo que va, desde la toma del poder en Italia por parte de Mussolini (1922), hasta la víspera de la segunda guerra mundial (1938). El objetivo de este artículo es analizar cuestiones relativas a la inmigración proveniente de un país totalitario, tratando de abordar dos nudos: en primer lugar, el de la relación entre el fascismo y la sociedad ecuatoriana, y en segundo lugar el de los mecanismos de consenso que se impulsan a través de la propaganda, su actividad y sus logros o fracasos entre los inmigrantes italianos, y entre la élite y la sociedad ecuatoriana de la época. El estudio se apoyará en la documentación proveniente, en su mayoría, del Archivio Storico Diplomatico de Roma y del Archivo Histórico Alfredo Pareja Diezcanseco del Ministerio de Relaciones Exteriores de Quito.
Innovative Social Media Marketing Communication Application for Thai Hotel SMEs
Authors: Puangmaha Torboon , Taiphapoon Tatri , Vadhanasindhu Pakpachong , Sinthupinyo Sukree
Published: September 2020

Social media marketing communication has been widely adopted in organizations due to its values of interactivity, integration of communication channels, information collection and immediacy.  Nevertheless, a majority of small and medium enterprises (SMEs) do not realize how to systematically and effectively implement social media marketing communication.  In addition, few studies on application development of social media marketing communication have demonstrated the support for Thai hotel SMEs. This study aims to understand the pain points and expectations of SMEs in the Thai hotel industry, to design and develop an innovative social media marketing communication application for business promotion. The research utilizes design thinking process for application development using semi-structured interviews with 10 industry professionals. Based on results from the data analysis and conceptual prototype design, validated by group of professionals in business, innovation design and technology, the proposed prototype is practical and suitable for developing an innovative application that promotes Thai hotel SMEs’ social media marketing communication.
An Entrepreneur Sees the Reward
Authors: Ünal Zeynep Merve
Published: September 2020

The aim of this chapter is to advance the understanding of how social entrepreneurs analyze and apply intellectual capital and corporate social responsibility within their companies. From the extensive literature review, the broad definitions of intellectual capital, and corporate social responsibility, the measurement models and the management of intellectual capital and the development process of corporate social responsibility were identified. Modern, socio-economic, philanthropic, and classical views were taken into consideration to explain corporate social responsibility in detail. In order to develop holistic understanding, the relationship between intellectual capital and corporate social responsibility on the basis of entrepreneur were analyzed. The understanding of the intellectual capital and corporate social responsibility in companies were shown by theoretical framework of resource-based view, dynamic capabilities, stakeholder theory, and legitimacy theory.
Influence of Reinforcement of TiC Particles on Wear Behaviour of Al7075/TiC Composite Material
Authors: Agrawal Eshan S. , Tungikar Vinod B.
Published: September 2020

TiC particles are reinforced with Al 7075 to develop metal matrix composite. Special purpose die is fabricated for centrifugal casting machine for the preparation of composite material. The tribological properties such as wear rate and coefficient of friction are determined by using pin on disc wear testing machine. Weight percentage of TiC, applied load, sliding distance are considered as parameters for the wear test. The results show that the wear resistance of the developed composite increases with increase of TiC percentage. Wear rate of Al-TiC composite is observed to be reduced by 11%, 31% and 42% with increasing percentage of TiC by 2.5%, 5% and 7.5% respectively. SEM and EDS analysis are used for morphological study of the worn surfaces of composite. Keywords: Composites, Al-TiC, Wear, Coefficient of Friction (CoF), SEM
Study of Pavements of Concrete Paving Blocks with Ribbed Underside Surface
Authors: Dumanska Veronika , Kalinin Oleksandr , Sidorova Nataliya , Kalinina Tetiana
Published: September 2020

Improving the reliability and durability of sidewalks, footways, car parks and areas for various purposes, made of concrete paving blocks (CPBs), is an important task of construction. In order to improve the quality characteristics, new pavements consisting of concrete paving blocks with a ribbed underside surface are proposed. Hypotheses about the advantages of the developed structural solutions of pavements relative to traditional pavements of blocks with a flat underside surface were formulated. To confirm the hypotheses, studies of one of the developed pavement variants of in laboratory conditions were performed. The article describes the plan and methodology for implementation two series of experiments. In the first series of the experiment, a section of a traditional pavement of concrete blocks with a flat underside surface was investigated, in the second, a section from a pavement of concrete paving blocks with a ribbed underside surface consisting of three prismatic elements. Qualitative characteristics of the pavement are determined by various indexes. As a result of laboratory tests, the dynamics of settlement of experimental CPBs under the influence of vertically applied load was studied, and density index of a sand structural layer located under the tested CPBs was also obtained. The settlement indexes of the tested CPBs were investigated for three days. A comparative analysis of the experimental results confirmed the hypothesis about the advantages of pavements of concrete paving blocks with a ribbed underside surface. For the further implementation of the developed pavement variant in the construction industry, additional research is required. Further research directions of pavements of concrete paving blocks with a modified geometric shape of the underside surface are determined.