bluuebunny/crossref_metadata_2025_split huggingface dataset:
LA TRANSPARENCIA Y OBJETIVIDAD COMO PRINCIPIOS PARA PROCESOS DE CONTRATACIÓN COMPETITIVOS
Authors: Hidrobo Iván 
Published: January 2020

HIDROPAUTE S.A., como titular de la concesión del Proyecto Hidroeléctrico Mazar ha realizado los procesos de contratación de la Gerencia y de la Construcción de las Obras Civiles del Proyecto. Siguiendo con sus políticas de administración moderna que la han convertido en una Empresa líder del País, es tal vez la única, que en sus procesos administrativos, y especialmente los de contratación, ha incorporado las normas más modernas de transparencia y sistemas de evaluación objetivos, lo que ha permitido realizar procesos de licitación y contratación competitivos tanto en la parte técnica como en la parte económica, generando el interés y procurando la participación de importantes empresas internacionales tanto de ingeniería y consultoría así como de construcción.
El objeto del trabajo es sistematizar los procesos de contratación realizado por HIDROPAUTE S.A. en base a las experiencias vividas por los directivos y técnicos que participaron en dichos procesos, y contribuir para que en el País, y en particular en el sector eléctrico, se fomente la Transparencia y la Objetividad como principios fundamentales para la competitividad y disminución de los costos de construcción de grandes y medianos proyectos eléctricos, consiguiendo además reducir al máximo los tiempos en los procesos de contratación.
APLICACIONES DE INTELIGENCIA ARTIFICIAL (ANFIS) EN SISTEMAS DE SUMINISTRO DE ENERGÍA ELÉCTRICA: PRONÓSTICO DE DEMANDA DE MUY CORTO PLAZO Y PRONÓSTICO DE LOS PRECIOS SPOT DE CORTO PLAZO
Authors: Hinojosa Víctor Hugo 
Published: January 2020

En este trabajo se muestra dos posibles aplicaciones de la Inteligencia Artificial (IA), en base a un modelo neuro – fuzzy (ANFIS), a los Sistemas de Suministro de Energía Eléctrica (SSEE). Se utiliza IA debido a las ventajas de modelación, en lo que respecta con sistemas multivariable, y tiempo de cálculo. El modelo ANFIS aprende las relaciones pasadas, actuales y futuras de la demanda y los precios.
Se analiza además el performance del Modelo ANFIS comparado con una Metodología de referencia (ARIMA).
ANÁLISIS DE LA OPERACIÓN DEL SISTEMA NACIONAL INTERCONECTADO DEL ECUADOR UTILIZANDO PROGRAMACIÓN EN DIgSILENT-DPL
Authors: Canchiña S. José M. , Hinojosa Víctor H. 
Published: January 2020

La planificación, diseño y el análisis de la operación de sistemas de potencia requieren estudios a fin de evaluar el desempeño del sistema existente, confiabilidad, seguridad y economía. Los estudios identifican y alertan potenciales deficiencias en el sistema factibles de corregir o prevenir.
En el presente trabajo se presenta el estudio de las funcionalidades disponibles en el programa DIgSILENT Power Factory, y la implementación y automatización del proceso “Analizar la Operación en Condiciones normales y de Emergencia” realizado por la Dirección de Operaciones de la Corporación Centro Nacional de Control de Energía - CENACE. La automatización se realizará con base al Lenguaje de Programación DIgSILENT Programming Language (DPL) de DIgSILENT.
Además, se plantea utilizar el módulo de protecciones de DIgSILENT en el análisis post - operativo, con el objeto de realizar la verificación y validación de todas las respuestas de los relés ante diferentes contingencias. El módulo de protecciones nos permite realizar un modelado de la estructura general de modelos de relés, transformadores de corriente y voltaje, relés de sobre corriente, relés de distancia, etc.
SISTEMA PARA LA ADQUISICIÓN Y PROCESAMIENTO DE DATOS PARA EL ANÁLISIS DE LA OPERACIÓN DEL S.N.I. A PARTIR DE LA APLICACIÓN PI DEL SISTEMA NETWORK MANAGER
Authors: Barba Roberto , Cubillo Raúl 
Published: January 2020

El Sistema Network Manager de ABB, que actualmente el CENACE utiliza como plataforma para el sistema SCADA, incluye la tecnología de sistemas PI (Plant Information); dicha tecnología se encuentra disponible mediante una aplicación incluida en Excel de Microsoft Office. Considerando la potencialidad de estas herramientas disponibles en el sistema Network Manager, y la necesidad de mantener toda la información del sistema nacional interconectado en una sola fuente de información se planteó el objetivo de crear una aplicación que permita almacenar la información no supervisada en la misma base de datos denominada HIS.
El Sistema denominado SADHIS (Sistema de Adquisición de Datos en el Histórico), que actualmente cumple con estos objetivos y utiliza las potencialidades del PI, se desarrolló con el fin de reemplazar al sistema SADYR (Sistema de Adquisición y Registro de información), garantizando que tanto la información supervisada por el sistema SCADA así como la no supervisada, este disponible para la operación en tiempo cuasi real y disponible para realizar cualquier tipo de procesamiento de información post operativa.
Las interfaces de ingreso y procesamiento de información que maneja los diferentes módulos de la Aplicación SADHIS están desarrollados mediante programación avanzada de Visual Basic for Applications de Microsoft ®, sobre Microsoft Excel.
Sistema de Toma, Análisis y Gestión de Datos Industriales de la Central Quevedo II, CELEC EP – UNIDAD DE NEGOCIOS TERMOPICHINCHA
Authors: Crespo J. , Cedeño M. 
Published: January 2020

En toda planta industrial los operadores de la maquinaria están obligados a llevar un registro del estado y condición de los equipos a su cargo, este proceso en la mayoría de industrias se lo realiza manualmente, en el caso de la Central Quevedo II el operador tomaba datos de los motores cada 3 horas en hojas de papel, las cuales se archivaban en una carpeta, luego el supervisor revisaba una a una e identificaba los daños existentes en los motores y posteriormente comunicaba al personal de mantenimiento eléctrico o mecánico para su reparación. El proceso de revisión manual de esta información no es eficiente debido al tiempo que se emplea, y no es eficaz por que al manejar gran cantidad de hojas e información se pueden omitir datos importantes, tampoco se lleva un control de históricos ni tendencias.
El sistema implementado automatiza la toma de parámetros en equipos industriales usando un dispositivo PDA, que se sincroniza automáticamente con un servidor generando reportes útiles para operación y mantenimiento, con el fin de mejorar los tiempos de respuesta ante fallas usando herramientas para visualizar tendencias y gráficos estadísticos. Además se cuenta con el servicio de notificación de alertas y fallas graves mediante correo electrónico.
PRINCIPLES OF CONSTRUCTION OF APPLIED ECONOMICAL CYBERNATICAL SYSTEMS
Authors: Rudyk S. L. , Sapun V. S. , Sapun K. , Seleznova R. V. 
Published: January 2020

The general principles of modeling and application of cybernetic systems are considered in the article. An overall description of the automated monitoring and control systems of various complex objects is given. Uncertainty of the object of control was estimated. An overall assessment of the effectiveness of automated monitoring and control systems based on a comparison of the potential and real systems was conducted there.
Pengaruh Penggunaan Knee Decker Terhadap Nyeri Lutut Pada Pengayuh Becak Di Pasar Klewer
Authors: Trimandasari Cica , Utomo Prasetyo Catur , Akbar Muh Syaiful 
Published: January 2020

Abstract : Elastic Knee Decker, Rickshaw Peddlers, Knee Pain. Knee pain is a sore knee pain in the knee joint that can be known by everyone of all ages. Most of the illnesses can be at home, there are some conditions that require medical, such as surgery or which can cause prolonged illness, damage to the joints, and severe defects if not damaged. The purpose of this study is to find out how effective the decrease of pain in the use of elastic knee decker on pedicab driver in klewer market Surakarta.This type of research is experimental with one group pretest-podt test design, where there is only one group of conscientious subjects to be observed. In this study 20 respondents were given treatment in the form of use of elastic knee decker tool for 20 days. The results of this study indicate that there is an effect of the use of knee decker to decrease the degree of pain in pedicab drivers in the market klewer, with the results of analysis value p = 0,000 (p <0.05), z = -4.041a. The conclusions of this study indicate that the use of elastic knee decker has an influence in decreasing the degree of knee pain in rickshaw peddlers in the market klewer Surakarta.
Study Korelasi Faktor-Faktor Yang Berhubungan Dengan Kualitas Hasil Belajar Melalui Orientasi Masa Depan Pada Mahasiswa Politeknik Kesehatan Surakarta Tahun 2017
Authors: Setyawan Dodiet Aditya , Setyaningsih Wiwik , Sarwanto Ari 
Published: January 2020

Background: Achieving a good quality of a student’s learning outcomes is influenced by many factors including intelligence, talent, interest and attention, motivation, ways and habits of learning, family and school environment. That is why the level of Intelligence Quotient (IQ) is not the only factor that determines one's success, because there are other influencing factors. This study aimed to determine the factors that influenced the quality of students' learning outcomes at Politeknik Kesehatan Surakarta. Method: This study was a correlational descriptive study which is explanatory in nature that explains the relation between study variables through hypothesis testing. The approach method used in this study was cross sectional. This research was conducted in Politeknik Kesehatan Surakarta environment which consisted of 8 Departments with a total of 3,407 students. The sampling technique used to determine the number of samples in this study was Proportional Stratified Random Sampling, with a sample size of 358 respondents. While the data analysis plan was done descriptively, bivariate with Kendall's Tau technique. Results : The results of the study show that the factors which are proven to be significantly related to the students’ learning outcomes quality in Politeknik Kesehatan Surakarta are Spiritual Intelligence (p = 0.019); Motivation (p = 0.031), Learning Habits (p = 0.037). Conclusion. Factors that are significantly related to the quality of learning outcomes in Politeknik Kesehatan Surakarta students include Spiritual Intelligence, Motivation, and Learning Habits. While the Spiritual Intelligence factor is not significantly related to the quality of students' learning outcomes at Politeknik Kesehatan Surakarta.
Pengaruh Kombinasi Titik Lokal Dan YNSA Terhadap Penurunan Derajat Nyeri Pada Pasien Nyeri Pinggang (Low Back Pain)
Authors: Yatmihatun Sri , Badri Sholichan , Wardoyo Suwaji Handaru 
Published: January 2020

Background: Low Back Pain is a common disorder involving the muscles, nerves and spine. The use of combination acupuncture, namely the local point and Yamamoto News Scalp Acupuncture (YNSA) is expected to accelerate the decrease in pain in patients with Low Back Pain. Methods: This study is used 45 respondents divided into 3 treatment groups, namely 1) Local point acupuncture therapy group, 2) Yamamoto News Scalp Acupuncture acupuncture therapy group, and 3) Local point combination with Yamamoto News Scalp Acupuncture therapy group. This research was conducted in the working area of the Ngemplak Community Health Center, Boyolali from January 2017 to September 2017. Measurement of pain using Visual Analog Scale (VAS). Results: The evaluation results showed that the respondent's data is normally distributed and homogeneous. ANOVA test showed there was a significant relationship between the local point acupuncture therapy group, Yamamoto News Scalp Acupuncture (YNSA) and Combination. The F value in this study is smaller than α (0.05). The T test showed that local acupuncture therapy is more effective than Yamamoto acupuncture therapy. News Scalp Acupuncture, and point combination acupuncture therapy are more effective than local points. Conclusion: Therfore it is the first report that proved the better method of combination (Local Point and YNSA) for reducing LBP quickly.
Hubungan Pijat Oksitosin Dengan Kecukupan ASI Di Wilayah Kerja Puskesmas Karangdowo
Authors: Kandini Sri , Suwanti Endang , Handayani Rohmi 
Published: January 2020

Abstract: Oxytocin Massage, Breastfeedingadequacy. Factors that can increase breast milk production include frequency of breastfeeding, nutrition, rest and sleep patterns, psychological, and breastfeeding and breast care techniques. Breast care is useful in stimulating the breast, which affects the pituitary to release the hormone prolactin and oxytocin. This oxytocin massage is done to stimulate the reflex oxytocin or reflex let down. The goals of thisreasearchisto know the relationship of oxytocin massage to breast milk sufficiency in the Working Area of Karangdowo Public Health Center. This research is quantitative research by using preexperimental research design with Post test type only with control design. The population of this research was all postpartum day 1-3 in Working Area of Public Health Center Karangdowo from May until June 2017. Technique sampling used accidental sampling and technique of data analysis used Chi Square. Results of this reasearch are characteristics of mothers covering the age of 20-35 years, education, namely junior high and high school, the work of housewives and parity is multiparous. There is a relationship between breastfeeding adhequacy to postpartum mother who given oxytocin massage and which is not givenoxytocin massage in Working Area of Karangdowo Klaten Public Health Center with.
Uji Stabilitas Fisik Dan Hedonik Sirup Herbal Kunyit Asam Stability And Hedonic Test Of Tumeric Tamarind Syrup
Authors: Dewi Indri Kusuma , Rusita Youstiana Dwi 
Published: January 2020

Abstract: Physical Stability, Hedonic, Syrup, Tumeric Tamarind. Tumeric have a benefit as antiinflammation so can be improved in the syrup formula. This research aimed to describe the result physical stability and hedonic test of the tumeric tamarind sirup with differences temperature storing for phormula I was saving in 5°C and phormula II was saving in 35°C for 24 hours as many 14 cyclic. It was experimental research. This research was done by testing physical stability of the tumeric tamarind sirup include to organoleptic, pH, homogenity and pour time test and also hedonic test. The result research: organoleptic test were no change for two weeks with brownish yellow colour, smell test is turmeric tamarind, flavor test is sweet and tamarind and texture is solid. pH test is stable at 4, homogenity test is stable homogen and pour time test is phormula I was storing in 5C is 8,14 second and 7,84 second, phormula II was storing in 35°C is 5,04 second and 4,14 second for 24 hour as many 14 cyclic. Hedonic test was showed result for first week at temperature 5°C is 40% of respondents are very like, 40% of respondents are like and 20% of respondents are dislike, at temperature 35°C is 40% of respondents are very like and 60% of respondents are like. While for second week at temperature 5°C is 60% of respondents are very like and 40% of respondents are like, at temperature 35°C is 80% of respondents are very like and 20% of respondents are like.
MENINGKATKAN KEMAMPUAN MEMBILANG ANGKA MELALUI MEDIA JAM PINTAR PADA ANAK KELOMPOK B TK NEGERI PEMBINA KEC. KOTA SELATAN KOTA GORONTALO
Authors: Laiya Sri Wahyuningsi 
Published: January 2020

Tujuan penelitian ini untuk meningkatkan kemampuan membilang angka melalui media jam pintar pada anak kelompok B TK Negeri Pembina Kec. Kota Selatan Kota Gorontalo. Penelitian ini merupakan Penelitian Tindakan Kelas (PTK) yang dilaksanakan di TK Negeri Pembina Kecamatan Kota Selatan Kota Gorontalo Provinsi Gorontalo, tepatnya di kelompok B1. Hasil penelitian menunjukkan bahwa kemampuan membilang angka pada anak Kelompok B Di TK Pembina Kecamatan Kota Selatan Kota Gorontalo dapat ditingkatkan melalui media jam pintar. Pada observasi awal terdapat 5 anak (25%) dari 20 anak yang sudah mampu membilang angka. Setelah mengikuti siklus 1 menunjukkan peningkatan dalam kemampuan membilang angka menjadi 11 anak (60%) dan setelah mengikuti siklus 2 terdapat peningkatan menjadi 16 anak (80%) dari 20 orang anak untuk kemampuan membilang angka melalui media jam pintar pada anak Kelompok B Di TK Pembina Kecamatan Kota Selatan Kota Gorontalo.
On Using Inspiraling Supermassive Binary Black Holes in the PTA Frequency Band as Standard Sirens to Constrain Dark Energy
Authors: Yan Changshuo , Zhao Wen , Lu Youjun 
Published: January 2020

Abstract
Supermassive binary black holes (SMBBHs) in galactic centers may radiate gravitational waves (GW) in the nano-Hertz frequency band, which are expected to be detected by pulsar timing arrays (PTAs) in the near future. GW signals from individual SMBBHs at cosmic distances, if detected by PTAs, are potentially powerful standard sirens that can be used to independently measure distances and thus put constraints on cosmological parameters. In this paper, we investigate the constraint that may be obtained on the equation of state (w) of dark energy by using those SMBBHs, expected to be detected by the PTAs in the Square Kilometre Array (SKA) era. By considering both the currently available SMBBH candidates and mock SMBBHs in the universe resulting from a simple galaxy major merger model, we find that ∼200–3000 SMBBHs with chirp mass >109
M
⊙ are expected to be detected with a signal-to-noise ratio >10 by SKA–PTA with conservative and optimistic settings and they can be used to put a constraint on w to an uncertainty of Δw ∼ 0.02–0.1. If further information on the mass and mass ratio of those SMBBHs can be provided by electromagnetic observations (e.g., chirp mass uncertainty ≲50%), the constraint may be further improved to a ≲0.01 level, as many more SMBBHs will be detected by SKA–PTA with relatively better distance measurements and can be used as the standard sirens.
The Influence of Stellar Contamination on the Interpretation of Near-infrared Transmission Spectra of Sub-Neptune Worlds around M-dwarfs
Authors: Iyer Aishwarya R. , Line Michael R. 
Published: January 2020

Abstract
The impact of unocculted stellar surface heterogeneities in the form of cool spots and hot faculae on the spectrum of a transiting planet has been a daunting problem for the characterization of exoplanet atmospheres. The wavelength-dependent nature of stellar surface heterogeneities imprinting their signatures on planetary transmission spectra are of concern particularly for systems of sub-Neptunes orbiting M-dwarfs. Here we present a systematic exploration of the impact of this spot-contamination on simulated near-infrared transmission spectra of sub-Neptune planets. From our analysis, we find that improper correction for stellar surface heterogeneities on transmission spectra can lead to significant bias when inferring planetary atmospheric properties. However, this bias is negligible for lower fractions of heterogeneities (<1%). Additionally, we find that acquiring a priori knowledge of stellar heterogeneities does not improve precision in constraining planetary parameters if the heterogeneities are appropriately marginalized within a retrieval; however, these are conditional on our confidence of stellar atmospheric models being accurate representations of the true photosphere. In sum, to acquire unbiased constraints when characterizing planetary atmospheres with the James Webb Space Telescope, we recommend performing joint retrievals of both the disk-integrated spectrum of the star and the stellar-contamination-corrected transmission spectrum.
Do the TRAPPIST-1 Planets Have Hydrogen-rich Atmospheres?
Authors: Hori Yasunori , Ogihara Masahiro 
Published: January 2020

Abstract
Recently, transmission spectroscopy in the atmospheres of the TRAPPIST-1 planets revealed flat and featureless absorption spectra, which rule out cloud-free, hydrogen-dominated atmospheres. Earth-sized planets orbiting TRAPPIST-1 likely have either a clear or a cloudy/hazy, hydrogen-poor atmosphere. In this paper, we investigate whether a proposed formation scenario is consistent with expected atmospheric compositions of the TRAPPIST-1 planets. We examine the amount of hydrogen-rich gas that TRAPPIST-1-like planets accreted from the ambient disk until disk dispersal. Since TRAPPIST-1 planets are trapped into a resonant chain, we simulate disk gas accretion onto a migrating TRAPPIST-1-like planet. We find that the amount of accreted hydrogen-rich gas is as small as 10−2 wt% and 0.1 wt% for TRAPPIST-1 b and 1 c, 10−2 wt% for 1 d, 1 wt% for 1 e, a few wt% for 1 f and 1 g and 1 wt% for 1 h, respectively. We also calculate the long-term thermal evolution of TRAPPIST-1-like planets after disk dissipation and estimate the mass loss of their hydrogen-rich atmospheres driven by stellar X-ray and UV irradiation. We find that all the accreted hydrogen-rich atmospheres can be lost via hydrodynamic escape. Therefore, we conclude that TRAPPIST-1 planets should have no primordial hydrogen-rich gases but secondary atmospheres such as a Venus-like one and water vapor, if they currently retain atmospheres.
Drifting Pulsation Structure at the Very Beginning of the 2017 September 10 Limb Flare
Authors: Karlický Marian , Chen Bin , Gary Dale E. , Kašparová Jana , Rybák Jan 
Published: January 2020

Abstract
Drifting pulsation structures (DPSs) are important radio fine structures usually observed at the beginning of eruptive solar flares. It has been suggested that DPSs carry important information on the energy release processes in solar flares. We study DPS observed in an X8.2-class flare on 2017 September 10 in the context of spatial and spectral diagnostics provided by microwave, EUV, and X-ray observations. We describe DPS and its substructures that were observed for the first time. We use a new wavelet technique to reveal characteristic periods in DPS and their frequency bands. Comparing the periods of pulsations found in this DPS with those in previous DPSs, we found new very short periods in the 0.09–0.15 s range. We present Expanded Owens Valley Solar Array images and spectra of microwave sources observed during the DPS. This DPS at its very beginning has pulsations in two frequency bands (1000–1300 MHz and 1600–1800 MHz), which are interconnected by fast drifting bursts. We show that these double-band pulsations started just at the moment when the ejected filament splits apart in a tearing motion at the location where a signature of the flare current sheet later appeared. Using the standard flare model and previous observations of DPSs, we interpret these double-band pulsations as a radio signature of superthermal electrons trapped in the rising magnetic rope and flare arcade at the moment when the flare magnetic reconnection starts. The results are discussed in a scenario with the plasmoid in the rising magnetic rope.
A new parasitoid wasp, Aphaereta vondelparkensis sp. n. (Braconidae, Alysiinae), from a city park in the centre of Amsterdam
Authors: van Achterberg Kees , Schilthuizen Menno , van der Meer Marrit , Delval Richard , Dias Claudia , Hoynck Marlene , Köster Heko , Maarschall Rudie , Peeters Norbert , Venema Peter , Zaremba Ryan , Beltrami Cristina , Nieuwenhuis Florinda , de Rop Nicole , Njunjić Iva , Koene Joris 
Published: January 2020

The parasitic wasp genus Aphaereta Foerster, 1863, belongs to the large subfamily Alysiinae Leach, 1815 (Hymenoptera: Braconidae) and contains solitary or gregarious endoparasitoids of larvae of cyclorrhaphous Diptera living in decaying organic matter.
A new species, Aphaereta vondelparkensis sp. n. (Braconidae, Alysiinae, Alysiini), from a city park in the centre of Amsterdam (Vondelpark) is described and illustrated. The species was discovered on a so-called taxon expedition, in which experts and citizen scientists collaborate on taxonomic projects. The finding highlights the fact that new animal species can still be discovered today, even in the busiest park of the capital of one of the best studied European countries.