Resultados de Búsqueda por Autor

1

artículo

First climatology of F-region UHF echoes observed by the AMISR-14 system at the Jicamarca radio observatory and comparison with the climatology of VHF echoes observed by the colloc...

Publicado por
Massoud, Alexander A., Rodrigues, Fabiano S., Sousasantos, Jonas, Milla, Marco A., Scipión, Danny, Apaza, Joab M., Kuyeng, Karim, Padin, Carlos

Publicado 2024

Enlace

Coherent backscatter radar observations made at the Jicamarca Radio Observatory (JRO) have contributed significantly to our understanding of equatorial F-region irregularities. Radar observations, however, have been made predominantly at the Very-High Frequency (VHF) band (50 MHz), which corresponds to measurements of 3-m field-aligned irregularities. The deployment of the 14-panel version of the Advanced Modular Incoherent Scatter Radar (AMISR-14) at Jicamarca provided an opportunity for observations of Ultra-High Frequency (UHF - 445 MHz) echoes which correspond to measurements of irregularities with 0.34 m scale sizes. Here, we present what we believe to be the first report describing the quiet-time climatology of sub-meter equatorial F-region irregularities derived from UHF radar measurements. The measurements were made between August 2021 and February 2023 using a 10-beam AMISR-14 m...

2

tesis de maestría

La gestión educativa y el liderazgo directivo en instituciones educativas del nivel secundario en el Distrito de Hualmay

Publicado por
Valdez Principe, Alexander A'leo

Publicado 2024

Enlace

Objetivo: Determinar la relación entre la gestión educativa y el liderazgo directivo en instituciones educativas del nivel secundario en el distrito de Hualmay. Metodología: Se considera una investigación de tipo básica, de enfoque cuantitativo, de diseño no experimental, transversal y correlacional, congregó a una población de 12 directivos y 96 docentes de las instituciones educativas, se utilizaron dos cuestionarios de escala Likert para recoger información de las dos variables, con 20 y 27 ítems validadas de forma excelente. Resultado: se denota una correlación de r=0,629 con una relevancia menor a 0,05 la que acepta a la hipótesis alternativa y rechazando la nula. Conclusión: la estadística permite afirmar la existencia de una evidenciamos que existe relación significativa entre la gestión educativa y el liderazgo directivo en instituciones educativas del nivel secun...

3

artículo

Abnormal Pulmonary Sounds Classification Algorithm using Convolutional Networks

Publicado por
Alicia A.M., Alexander A.-G., Sebastian R.-C., William C.F., Michael C.-T., Víctor H.-A.

Publicado 2021

Enlace

We want to thank the Image Processing Research Laboratory. (INTI-Lab) and the Universidad de Ciencias y Humanidades. (UCH) for their support in this research, the National Fund for. Scientific, Technological and Technological Innovation (FONDECYT), according to the research: ?SAMAYCOV: ?Desarrollo de un dispositivo electr?nico port?til a bajo costo para evaluar riesgo de neumon?a basado en sonido pulmonar anormal en pacientes con sospecha de COVID-19 en zonas vulnerables?. CONVENIO 054-2020-FONDECYT?; for the financing of this research and the Electronics Laboratory of the UCH for assigning us their facilities and being able to carry out the respective tests.

4

artículo

Clinical standards for the diagnosis and management of asthma in low- and middle-income countries

Publicado por
Jayasooriya, S., Stolbrink, M., Khoo, E. M., Sunte, I. T., Awuru, J. I., Cohen, M., Lam, D. C., Spanevello, A., Visca, D., Centis, R., Migliori, G. B., Ayuk, A. C., Buendia, J. A., Awokola, B. I., Del-Rio-Navarro, B. E., Muteti-Fana, S., Lao-Araya, M., Chiarella, P., Badellino, H., Somwe, S. W., Anand, M. P., Garcı-Corzo, J. R., Bekele, A., Soto-Martinez, M. E., Ngahane, B. H.M., Florin, M., Voyi, K., Tabbah, K., Bakki, B., Alexander, A., Garba, B. L., Salvador, E. M., Fischer, G. B., Falade, A. G., Zorica Zivkovi, C., Romero-Tapia, S. J., Erhabor, G. E., Zar, H., Gemicioglu, B., Brandão, H. V., Kurhasani, X., El-Sharif, N., Singh, V., Ranasinghe, J. C., Kudagammana, S. T., Masjedi, M. R., Velasquez, J. N., Jain, A., Cherrez-Ojeda, I., Valdeavellano, L. F.M., Gomez, R. M., Mesonjesi, E., Morfin-Maciel, B. M., Ndikum, A. E., Mukiibi, G. B., Reddy, B. K., Yusuf, O., Taright-Mahi, S., Merida-Palacio, J. V., Kabra, S. K., Nkhama, E., Filho, N. R., Zhjegi, V. B., Mortimer, K., Rylance, S., Masekela, R. R.

Publicado 2023

Enlace

B A C K G R O U N D: The aim of these clinical standards is to aid the diagnosis and management of asthma in low-resource settings in low- and middle-income countries (LMICs). M E T H O D S: A panel of 52 experts in the field of asthma in LMICs participated in a two-stage Delphi process to establish and reach a consensus on the clinical standards. R E S U L T S: Eighteen clinical standards were defined: Standard 1, Every individual with symptoms and signs compatible with asthma should undergo a clinical assessment; Standard 2, In individuals (>6 years) with a clinical assessment supportive of a diagnosis of asthma, a hand-held spirometry measurement should be used to confirm variable expiratory airflow limitation by demonstrating an acute response to a bronchodilator; Standard 3, Pre- and post-bronchodilator spirometry should be performed in individuals (>6 years) to support diagnosis be...