bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparación de variables fisiológicas cardio-respiratorias durante el ejercicio entre estudiantes de medicina
Authors: Riveros Pérez Efraín , García Francisco , Valero Adriana , Roa Marcela , Rojas Pilar 
Published: March 2018

Objetivo: evaluar el efecto de un programa de ejercicio de tres semanas sobre variables cardio-respiratorias en un grupo de estudiantes de Medicina de la Universidad de Boyacá.Metodología: tipo de estudio, experimento controlado aleatorizado. Un grupo de 100 estudiantes de tercer semestre de Medicina, sedentarios, se aleatorizó por medio de tabla numérica. Los sujetos del grupo experimental (n= 44) hicieron ejercicio (trote) por media hora diaria durante tres semanas. El grupo control (n= 56) continuó con sus hábitos sedentarios habituales. Después del periodo de tres semanas, todos los estudiantes realizaron la prueba de ejercicio de Course-Navette. Se registraron las variables frecuencia cardiaca, frecuencia respiratoria, presión arterial diastólica y sistólica, saturación parcial de oxígeno y capacidad vital tanto en reposo como en el periodo post-ejercicio inmediato. También se registraron el consumo de oxígeno máximo y la velocidad durante la prueba. Se hicieron comparaciones de las variables antes y después del ejercicio. Resultados: se encontraron diferencias estadísticamente significativas en las variables presión arterial diastólica (p<0,045), frecuencia cardiaca (p<0,05) y consumo de oxígeno máximo (p<0,05) entre los dos grupos después del ejercicio, siendo mayores los valores de las tres variables en el grupo que no hizo ejercicio. Conclusiones: la rutina de ejercicio (trote) durante tres semanas, atenúa los cambios de frecuencia cardiaca, presión arterial diastólica y consumo de oxígeno en una población joven sana con hábitos basales de sedentarismo.
Prioritisation of food-borne parasites in Europe, 2016
Authors: Bouwknegt Martijn , Devleesschauwer Brecht , Graham Heather , Robertson Lucy J , van der Giessen Joke WB ,   the Euro-FBP workshop participants
Published: March 2018

Background and aims
Priority setting is a challenging task for public health professionals. To support health professionals with this and in following a recommendation from the Food and Agriculture Organization of the United Nations (FAO) and World Health Organization (WHO), 35 European parasitologists attended a workshop from 8–12 February 2016 to rank food-borne parasites (FBP) in terms of their importance for Europe and regions within Europe. Methods: Countries were divided into European regions according to those used by the European Society of Clinical Microbiology and Infectious Diseases. We used the same multicriteria decision analysis approach as the FAO/WHO, for comparison of results, and a modified version, for better regional representation. Twenty-five FBP were scored in subgroups, using predefined decision rules. Results: At the European level, Echinococcus multilocularis ranked first, followed by Toxoplasma gondii and Trichinella spiralis. At the regional level, E. multilocularis ranked highest in Northern and Eastern Europe, E. granulosus in South-Western and South-Eastern Europe, and T. gondii in Western Europe. Anisakidae, ranking 17th globally, appeared in each European region’s top 10. In contrast, Taenia solium, ranked highest globally but 10th for Europe. Conclusions: FBP of importance in Europe differ from those of importance globally, requiring targeted surveillance systems, intervention measures, and preparedness planning that differ across the world and across Europe.
Seroprevalence of Coxiella burnetii antibodies and chronic Q fever among post-mortal and living donors of tissues and cells from 2010 to 2015 in the Netherlands
Authors: van Roeden Sonja E , Holsboer Eleonoor W , Oosterheert Jan Jelrik , van Kats Jorge P , van Beckhoven Jacqueline , Hogema Boris M , van Wijk Marja J 
Published: March 2018

Background
After a large Q fever outbreak in the Netherlands in the period from 2007 to 2010, the risk of Q fever transmission through tissue and cell transplantation from undiagnosed chronic Q fever cases became a potential issue. Aim: We aimed to evaluate the risk of Q fever transmission through tissue and cell transplantation. Methods: We performed a retrospective observational cohort study among 15,133 Dutch donors of tissues and stem cells from 2010 to 2015 to assess seroprevalence of Coxiella burnetii antibodies, to identify factors associated with presence of C. burnetii antibodies, and to assess the proportion of undiagnosed chronic Q fever cases. Results: The study population consisted of 9,478 (63%) femoral head donors, 5,090 (34%) post-mortal tissue donors and 565 (4%) cord blood donors. Seroprevalence of C. burnetii antibodies gradually decreased after the outbreak, from 2.1% in 2010 to 1.4% in 2015, with a significant trend in time (p < 0.001). Of 301 seropositive donors, seven (2.3%) were newly detected with chronic Q fever (0.05% of all screened donors). Conclusion: This study shows that seroprevalence of C. burnetii antibodies among donors of tissues and cells in the Netherlands after 2014 was similar to pre-outbreak levels in the general population. The proportion of newly detected chronic Q fever patients among donors of tissues and cells was smaller than 0.1%. This study may prompt discussion on when to terminate the screening programme for chronic Q fever in donors of tissues and cells in the Netherlands.
Muscle Mass and Quality of Life of Elderly People in Panti Tresna Werdha in Bandung
Authors: Stein Lambok K. K. , Wiramihardja Siska , Kulsum Iceu D. 
Published: March 2018

The proportion of elderly continues to increase from year to year due to theincrease of life expectancy. Elderly will experience degenerative process related tomuscle mass. This can disrupt the quality of life. The aim of this study was to determinethe muscle mass and quality of life (QoL) in the elderly. This study used cross sectionalapproach with the number of subjects as many as 32 elderly residents of Tresna Werdhain Bandung. The tool used to measure muscle mass is BIA Tanita SC-240 while theinstrument used in measuring quality of life is the WHOQL-BREF questionnaire. Theresult showed that the mean value of muscle mass per unit body surface area was 22.86±2.20 kg/m 2 . The highest average value of QoL is the physical domain (59.15±8,06%)while the lowest is the environmental domain (42.97±11.11%). The conclusion of thisstudy is muscle mass possessed by elderly study participants is good. The QoL isclassified as moderate.Keywords: elderly people, muscle mass, quality of life, WHOQL-BREF questionnaire
PEMODELAN SISTEM DAN ANALISIS KESTABILAN DINAMIK PESAWAT UAV (MODELING SYSTEM AND DYNAMIC STABILITY ANALYSIS OF UAV)
Authors: Budi Purwanto Eko 
Published: March 2018

Mission of Unmanned Aerial Vehicle (UAV) “Elang Avionik” is surveillance and aerial photographs. Therefore the flight of UAV must be stable and controlable, and first step activity is dynamic modelling and stability analisys. The problems of UAV system is disturbance, noise of sensor, MIMO and uncertainty dynamic model. For good result using the multivariable robust control, with some step research that is: (1)modeling and stability analysis, (2) design and implementation of PID control system, (3) flight dynamic parameter identification, (4) design and implementation of hardware in the loop simulation, (5) design and implementation of multivariable robust control, (6) test and evaluation of system. Simulation result show that the eigen value in longitudinal is: phugoid mode = –0,061293±0,40526i and non-oscillation mode = –6,1121±4,9253. In lateral directional is:dutch roll mode = –0,91089±5,7994i, spiral mode= –0,036563, and roll subsidence mode = –12,7181. Location of poles system on the left of imaginary axis, the means that the character of system is dynamic stable. But settling time to steady state condition is very long and improved by control system design.
Key word: State space, Longitudinal, Lateral, Stable static, Stable dynamic
RAIM DALAM RANGKA MENDUKUNG IMPLEMENTASI SISTEM NAVIGASI PENERBANGAN BERBASISKAN SATELIT DI INDONESIA (RAIM IN THE IMPLEMENTATION OF SATELLITE BASED NAVIGATION IN INDONESIAN AIR TRAFFIC MANAGEMENT)
Authors: Septiawan Reza , Sutedjo Bayu , Sarotama Afrias 
Published: March 2018

Receiver Autonomous Integrity Monitoring (RAIM) is a method to monitor the integrity of GPS using mesurement to redundant satellites on the receiver side. Comonly 2 algorithm are used to perform RAIM, i.e. snapshot method and sequential method. In snapshot method, single set measurement of GPS signal is used, meanwhile in sequential method several sets of measurements (past and current) GPS signal are used. Therefore, the sequential method has the capacity to detect position failure due to low fault to noise ratio. The low fault to noise ratio is mostly caused by the satellite’s position at the time of position measurement. RAIM is very useful for GPS users to be able to determine the whether the GPS can give accurate position, based on its satellite’s positions, satellite’s service life or error in the receivers. Such accuracy is important especially for the use in GPS navigation sistem in Air Traffic Management (ATM). The disturbance can also be caused by ionosfer condition. In order to support the use of GPS navigation system in ATM in Indonesia, Communication Navigation Surveillance-ATM (GPS CNS-ATM) team of BPPT perform simply RAIM asessment that can be informed to the flightcrew or Air Traffic Center, to be informed via Notice To Air Men (NOTAM). The GPS signal observation is done in 5 different locations in Indonesia.
Keywords: Air navigation system, GPS
PENDEKATAN BARU PEMETAAN BATHIMETRIC MENGGUNAKAN DATA PENGINDERAAN JAUH SPOT STUDI KASUS: TELUK PERIGI DAN TELUK POPOH (THE NEW APPROACH TO MAPPING BATHIMETRIC USING SPOT REMOTE SENSING DATA CASE STUDY: THE BAY AND POPOH GULF)
Authors: Arief Muchlisin 
Published: March 2018

Bathymetric mapping derived from remote sensing have been carried out researchers, in order to determine the depth of the shallow waters especially sallow water depth. Bathymetric relief map shows the earth/terrain depicted by contour lines is called the isobath. Usually bathymetric determination using exponential function of depth. While in this paper described a new approach to calculate the depth of seawater derived from SPOT-4 satellite data using empirical formulas functions of logarithmic or quadratic equation built through correlasi the depth map obtained from DIHIDROS (Navy) with Digital Number or the reflectance values of SPOT band-1. This experience has been tested at Perigi bay in Trenggalek district and Popoh bay in Tulung Agung district. Based on the calculations, the spread of sallow water depth on Perigi and popoh bay about 5 – 70 meters
Key words: Bathymetric, SPOT, Isobaths, Shallow water depth. correlation
PENGARUH KETEBALAN DI TENGAH TABUNG MOTOR ROKET RX 122 YANG PANJANG (THE EFFECT OF THICKNESS IN THE MIDDLE OF RX 122 LONG ROCKET MOTOR TUBE)
Authors: Ediwan NFN 
Published: March 2018

In the calculation of rocket tube due to the effect of pressure and temperature, if the comparison of length and diameter is large, then the bending stress and bucking stress will occur because of the weight, shear force, and torsion of the tube. For this reason, the tube needs to be thickened on the middle part so the pressure in the middle part will be reduced but will not result a new bigger pressure. In-depth analysis of the tubes was conducted on a long tube which is 2000 mm long and having 122 mm diameter. The analysis was only regarding the effect of the pressure on the tube with same thickness and the tube with thickened middle part for the purpose of seeing the effect of thickening the middle part of the tube and how much thickness in the middle part is allowed, so the effect of bending and buckling stress can be neglected. AbstrakPada perhitungan tabung roket akibat pengaruh tekanan dan temperatur, bila perbandingan antara panjang dan diameter cukup besar, perlu memperhitungkan terjadinya tegangan bending akibat berat dan tegangan buckling akibat ketebalan. Untuk menghindari tegangan tersebut maka bagian tengah tabung harus lebih tebal agar tegangan bagian tengah berkurang, tetapi tidak menimbulkan tegangan yang lebih besar lagi. Analisis yang lebih mendalam tentang tabung dilakukan pada tabung yang cukup panjang yaitu 2000 mm dan diameter 122 mm. Analisis yang dilakukan hanya dari pengaruh tekanan saja pada tabung yang tebalnya sama dan tabung yang tengahnya dipertebal, dengan tujuan untuk melihat pengaruh penebalan bagian tengah tabung tersebut dan sampai ketebalan berapa tabung bagian tengah diizinkan sehingga akibat terjadinya bending dan buckling dapat diabaikan.
APLIKASI PERANGKAT LUNAK SISTEM AKUISISI KECEPATAN REACTION WHEEL (SOFTWARE APPLICATION OF REACTION WHEEL SPEED ACQUISITION SYSTEM)
Authors: Septanto Harry 
Published: March 2018

Transfer of technology activity through reverse engineering is an effort done by developing country in order to decrease technology gap, including in satellite technology, from developed country. To perform measurement anddata acquisition in order to extract design information of a satellite component are the first step in reverse engineering process. This paper reports the result of research on the development of data acquisition software for satellite actuator called reaction wheel speed. In satellite development phase, the wheel speed acquisition system is also possible to be utilized as a testing tool for componente level verification. The wheel speed data obtained from the experiment was represented in graphic of transient response. Based on the data analysis, the developed data acquisition system was possible to be utilized to measure dynamic characteristic of the reaction wheel unit in order to extract its design information. Meanwhile, the analysis done has represented basic part of component level verification test. This fact showed that the developed acquisition system was also possible to be used as testing tool in satellite development phase. ABSTRAKKegiatan alih teknologi melalui reverse engineering merupakan upaya yang dilakukan oleh negara berkembang dalam rangka memperkecil jarak ketimpangan dari negara maju dalam hal teknologi, termasuk teknologi satelit. Melakukan pengukuran dan akuisisi data dalam rangka mengurai informasi desain suatu komponen satelit adalah tahap pertama proses reverse engineering. Makalah ini melaporkan hasil penelitian mengenai pengembangan perangkat lunak sistem akuisisi data kecepatan wheel dari sebuah aktuator satelit yang disebut reaction wheel unit. Dalam aspek fase pengembangan satelit, sistem akuisisi data ini dapat digunakan sebagai perangkat pengujian untuk verifikasi di tingkat komponen. Data kecepatan wheel, yang diperoleh dari eksperimen yang dilakukan, ditampilkan dengan grafik respon transien. Berdasarkan analisis atas data tersebut, sistem akusisi data yang dikembangkan menjanjikan untuk digunakan dalam rangka pengukuran karakteristik dinamik reaction wheel sebagai upaya mengurai informasi desainnya. Selain itu, analisis yang telah dilakukan merepresentasikan bagian dasar dari tahap verifikasi di tingkat komponen. Hal ini menunjukkan bahwa sistem akusisi data ini menjanjikan untuk digunakan sebagai perangkat pengujian di dalam fase pengembangan satelit.
In Favor of [Fortis]: Evidence from Setswana and Sebirwa
Authors: Zsiga Elizabeth 
Published: March 2018

This paper argues that in favor of adding the feature [fortis/lenis] to the set of generally accepted phonological features, as originally proposed by Trubetzkoy (1939). Phonetic data from the consonant systems the Southern Bantu languages Setswana and Sebirwa is presented. Measurements of consonant closure and voicing duration in Setswana show that post-nasal “strengthening” and the distribution of ejective stops in this language can best be accounted for phonologically with the feature [fortis] rather than [+/- voice] or [constricted glottis]. In contrast, the phonetic data show Sebirwa to be a “true voice” language, demonstrating that the patterns of Setswana are not phonetically inevitable.
No Metallicity Correlation Associated with the Kepler Dichotomy
Authors: Munoz Romero Carlos E. , Kempton Eliza M.-R. 
Published: March 2018

Abstract
NASA’s Kepler mission has discovered thousands of planetary systems, ∼20% of which are found to host multiple transiting planets. This relative paucity (compared to the high fraction of single transiting systems) is postulated to result from a distinction in the architecture between multi-transiting systems and those hosting a single transiting planet: a phenomenon usually referred to as the Kepler dichotomy. In this paper, we investigate the hypothesis that external giant planets are the main cause behind the over-abundance of single- relative to multi-transiting systems, which would be signaled by higher metallicities in the former sample. To this end, we perform a statistical analysis on the stellar metallicity distribution with respect to planet multiplicity in the Kepler data. We perform our analysis on a variety of samples taken from a population of 1166 Kepler main-sequence planetary hosts, using precisely determined metallicities from the California-Kepler survey and Swift et al. Contrary to some predictions, we do not find a significant difference between the stellar metallicities of the single- and multiple-transiting planet systems. However, we do find a 55% upper bound for systems with a single non-giant planet that could also host a hidden giant planet, based on metallicity considerations. While the presence of external giant planets might be one factor behind the Kepler dichotomy, our results also favor alternative explanations. We suggest that additional radial velocity and direct imaging measurements are necessary to constrain the presence of gas giants in systems with a single transiting planet.
Cloud Atlas: Rotational Modulations in the L/T Transition Brown Dwarf Companion HN Peg B
Authors: Zhou Yifan , Apai Dániel , Metchev Stanimir , Lew Ben W. P. , Schneider Glenn , Marley Mark S. , Karalidi Theodora , Manjavacas Elena , Bedin Luigi R. , Cowan Nicolas B. , Miles-Páez Paulo A. , Lowrance Patrick J. , Radigan Jacqueline , Burgasser Adam J. 
Published: March 2018

Abstract
Time-resolved observations of brown dwarfs’ rotational modulations provide powerful insights into the properties of condensate clouds in ultra-cool atmospheres. Multi-wavelength light curves reveal cloud vertical structures, condensate particle sizes, and cloud morphology, which directly constrain condensate cloud and atmospheric circulation models. We report results from Hubble Space Telescope/Wide Field Camera 3 near-infrared G141 taken in six consecutive orbits observations of HN Peg B, an L/T transition brown dwarf companion to a G0V type star. The best-fit sine wave to the 1.1–1.7 μm broadband light curve has an amplitude of 1.206% ± 0.025% and period of 15.4 ± 0.5 hr. The modulation amplitude has no detectable wavelength dependence except in the 1.4 μm water absorption band, indicating that the characteristic condensate particle sizes are large (>1 μm). We detect significantly (4.4σ) lower modulation amplitude in the 1.4 μm water absorption band and find that HN Peg B’s spectral modulation resembles those of early T type brown dwarfs. We also describe a new empirical interpolation method to remove spectral contamination from the bright host star. This method may be applied in other high-contrast time-resolved observations with WFC3.
Evidence of a Non-universal Stellar Initial Mass Function. Insights from HST Optical Imaging of Six Ultra-faint Dwarf Milky Way Satellites∗
Authors: Gennaro Mario , Tchernyshyov Kirill , Brown Thomas M. , Geha Marla , Avila Roberto J. , Guhathakurta Puragra , Kalirai Jason S. , Kirby Evan N. , Renzini Alvio , Simon Joshua D. , Tumlinson Jason , Vargas Luis C. 
Published: March 2018

Abstract
Using deep observations obtained with the Advanced Camera for Surveys (ACS) on board the Hubble Space Telescope (HST), we demonstrate that the sub-solar stellar initial mass function (IMF) of six ultra-faint dwarf Milky Way satellites (UFDs) is more bottom light than the IMF of the Milky Way disk. Our data have a lower-mass limit of ∼0.45 M
⊙, while the upper limit is ∼0.8 M
⊙, set by the turnoff mass of these old, metal-poor systems. If formulated as a single power law, we obtain a shallower IMF slope than the Salpeter value of −2.3, ranging from −1.01 for Leo IV to −1.87 for Boötes I. The significance of these deviations depends on the galaxy and is typically 95% or more. When modeled as a log-normal, the IMF fit results in a higher peak mass than in the Milky Way disk, but a Milky Way disk value for the characteristic system mass (∼0.22 M
⊙) is excluded at only 68% significance, and only for some UFDs in the sample. We find that the IMF slope correlates well with the galaxy mean metallicity, and to a lesser degree, with the velocity dispersion and the total mass. The strength of the observed correlations is limited by shot noise in the number of observed stars, but future space-based missions like the James Webb Space Telescope
(JWST) and the Wide-Field Infrared Survey Telescope (
WFIRST) will enhance both the number of dwarf Milky Way satellites that can be studied in such detail and the observation depth for individual galaxies.
Precise Time Delays from Strongly Gravitationally Lensed Type Ia Supernovae with Chromatically Microlensed Images
Authors: Goldstein Daniel A. , Nugent Peter E. , Kasen Daniel N. , Collett Thomas E. 
Published: March 2018

Abstract
Time delays between the multiple images of strongly gravitationally lensed Type Ia supernovae (glSNe Ia) have the potential to deliver precise cosmological constraints, but the effects of microlensing on time delay extraction have not been studied in detail. Here we quantify the effect of microlensing on the glSN Ia yield of the Large Synoptic Survey Telescope (LSST) and the effect of microlensing on the precision and accuracy of time delays that can be extracted from LSST glSNe Ia. Microlensing has a negligible effect on the LSST glSN Ia yield, but it can be increased by a factor of ∼2 over previous predictions to 930 systems using a novel photometric identification technique based on spectral template fitting. Crucially, the microlensing of glSNe Ia is achromatic until three rest-frame weeks after the explosion, making the early-time color curves microlensing-insensitive time delay indicators. By fitting simulated flux and color observations of microlensed glSNe Ia with their underlying, unlensed spectral templates, we forecast the distribution of absolute time delay error due to microlensing for LSST, which is unbiased at the sub-percent level and peaked at 1% for color curve observations in the achromatic phase, while for light-curve observations it is comparable to state-of-the-art mass modeling uncertainties (4%). About 70% of LSST glSN Ia images should be discovered during the achromatic phase, indicating that microlensing time delay uncertainties can be minimized if prompt multicolor follow-up observations are obtained. Accounting for microlensing, the 1–2 day time delay on the recently discovered glSN Ia iPTF16geu can be measured to 40% precision, limiting its cosmological utility.