CO and trans-cinnamaldehyde as corrosion inhibitors of I825, L80-13Cr and N80 alloys in concentrated HCl solutions at high pressure and temperature

Peer reviewedPostprin

Climate Change in Illinois: Past, Present, and Future

Contrasts natural climate change during the earth's history with recent human-driven change. Discusses predictive models for changes in temperature and precipitation, and the implications for Illinois. Concludes Illinois is getting warmer and wetter, with potential for more flooding, heat waves with associated losses in health and wealth.Ope

The Drought Monitor

There is a need for improved drought monitoring and assessment methods in the United States. Drought is the most costly natural disaster [Federal Emergency Management Agancy (FEMA 1995; Wilhite 2000)], but it is often neglected by developers of assessment and forecast products. Drought is more nebulous than other disasters and does not lend itself to traditional assessments or forecast methods. Its relatively slow onset and the complexity of its impacts are reasons for the new assessment methodology. Improvements in drought monitoring and forecasting techniques will allow for better preparation, lead to better management practices, and reduce the vulnerability of society to drought and its subsequent impacts. The Drought Monitor (additional information available online at http://drought.unl/edu/dm) was created with the goal of tracking and displaying the magnitude and spatial extent of drought and its impacts across the United States. The Drought Monitor is produced weekly and classifies drought severity into four major categories, with a fifth category threshold assigned to locations on a map are determined from a number of indicators, or tools, blended with subjective interpretation

Aplicación de la manufactura esbelta para mejorar la productividad del proceso de fabricación de cremalleras en una empresa de manufactura, Lima, 2017

La tesis titulada: “La aplicación de la manufactura esbelta para mejorar la productividad del proceso de fabricación de cremalleras, en una empresa de manufactura, Lima, 2017”. Cuyo objetivo general fue mejorar la productividad del área de fabricación de cremalleras mejorando las dimensiones de eficiencia de tiempos y eficacia en el cumplimiento de metas del proceso definidas por los conceptos de García Alfonso como variable dependiente, y para la mejora utilizaremos herramientas de la manufactura esbelta como la metodología SMED y la Estandarización como variable independiente guiadas por las teorías de Santos, Wysk y Torres. La investigación fue de tipo aplicada de diseño cuasi experimental, la población fueron los reportes de producción diario de la fabricación de cremalleras medida en 34 días. Se inicia con la recolección de datos luego apoyándonos en el mapeo de flujo de valor (VSM) para identificar el tiempo de ciclo del proceso, luego se procede a realizar un DOP para conocer el proceso y luego lo detallaremos en un DAP. Se aplicó la metodología y sus técnicas SMED y Estandarización de manera paralela reduciendo tiempos de operaciones estableciendo nuevos modos de hacer las operaciones y tareas, definiendo roles. Finalmente, como resultado se aumentó la eficiencia del uso de tiempos en la fabricación de 79% a 93%, la eficacia del cumplimiento de la meta de 79% a 89% y la productividad del proceso de fabricación de cremalleras de 53m/h-h a 64m/h-h, siendo la conclusión final que la reducción de los tiempos de máquina parada y la estandarización de las operaciones y procedimientos aplicados en un entorno de la manufactura esbelta son justificados por los resultados logrados

Mapping Agricultural Decision Making across the U.S. Corn Belt

Decision calendars help identify opportunities for inserting climate information into a decision process as well as points where other considerations might overrule use of the climate information. Developers of decision calendars are challenged, though, by a potentially infinite number of modifications required to address spatial variability in agricultural decision making. Variability in climate, soils, and agricultural production systems across a region may result in deviations in decision-making times

Dosimetry, clinical factors and medication intake influencing urinary symptoms after prostate radiotherapy: An analysis of data from the RADAR prostate radiotherapy trial

Purpose/Objective: To identify dosimetry, clinical factors and medication intake impacting urinary symptoms after prostate radiotherapy. Material and Methods: Data describing clinical factors and bladder dosimetry (reduced with principal component (PC) analysis) for 754 patients treated with external beam radiotherapy accrued by TROG 03.04 RADAR prostate radiotherapy trial were available for analysis. Urinary symptoms (frequency, incontinence, dysuria and haematuria) were prospectively assessed using LENT-SOMA to a median of 72 months. The endpoints assessed were prevalence (grade≥1) at the end of radiotherapy (representing acute symptoms), at 18-, 36- and 54-month follow-ups (representing late symptoms) and peak late incidence including only grade≥2. Impact of factors were assessed using multivariate logistic regression models with correction for over-optimism. Results: Baseline symptoms, non-insulin dependent diabetes mellitus, age and PC1 (correlated to the mean dose) impact symptoms at \u3e1 timepoints. Associations at a single timepoint were found for cerebrovascular condition, ECOG status and non-steroidal anti-inflammatory drug intake. Peak incidence analysis shows the impact of baseline, bowel and cerebrovascular condition and smoking status. Conclusions: The prevalence and incidence analysis provide a complementary view for urinary symptom prediction. Sustained impacts across time points were found for several factors while some associations were not repeated at different time points suggesting poorer or transient impact

DiLogics: Creating Web Automation Programs With Diverse Logics

Knowledge workers frequently encounter repetitive web data entry tasks, like updating records or placing orders. Web automation increases productivity, but translating tasks to web actions accurately and extending to new specifications is challenging. Existing tools can automate tasks that perform the same logical trace of UI actions (e.g., input text in each field in order), but do not support tasks requiring different executions based on varied input conditions. We present DiLogics, a programming-by-demonstration system that utilizes NLP to assist users in creating web automation programs that handle diverse specifications. DiLogics first semantically segments input data to structured task steps. By recording user demonstrations for each step, DiLogics generalizes the web macros to novel but semantically similar task requirements. Our evaluation showed that non-experts can effectively use DiLogics to create automation programs that fulfill diverse input instructions. DiLogics provides an efficient, intuitive, and expressive method for developing web automation programs satisfying diverse specifications

La inteligencia emocional y el desempeño del docente, desde la perspectiva de los estudiantes de la Maestría en Docencia Universitaria y Gestión Educativa de una universidad privada de Lima durante el periodo 2021-II

En la presente investigación buscamos describir la manera en que los estudiantes perciben cómo la inteligencia emocional contribuye en el desempeño docente empleando el punto de vista de los estudiantes de la maestría de Docencia Universitaria de una Universidad de Lima durante el periodo 2021-II. La reciente pandemia, obligó a redefinir mucho del trabajo docente, poniéndose en evidencia la importancia de saber controlar las emociones y enfocarse para lograr las metas que se plantea en su trabajo. La metodología usada para este trabajo fue de enfoque cualitativo planteando un diseño fenomenológico. Además optamos por un alcance descriptivo, tomando en cuenta los objetivos de la investigación. Aplicamos instrumentos de recopilación de información para lo cual se contó con la participación de 15 estudiantes voluntarios de la institución seleccionada para el estudio. Para recoger la percepción de los estudiantes respecto a la inteligencia emocional de sus docentes se aplicaron entrevistas semi estructuradas. Los resultados obtenidos permitieron observar que en la percepción de los estudiantes esta relación es significativa, y que influye de manera determinante en el desempeño docente, ya que el manejo de la inteligencia emocional potencia las habilidades del docente al momento de ejecutar su labor. Con esto se encontró que puede haber una relación entre las habilidades interpersonales y un adecuado desarrollo del desempeño docente relacionado a la promoción de los aprendizajes en la clase, en la evaluación de los diferentes procesos en la misma, en los manejos de los recursos compartidos en el trabajo y como parte de la construcción del vínculo entre docentes y estudiantes.Escuela de Postgrad

Adaptive Optics Spectroscopy: Preliminary Theoretical Results

We have done theoretical calculations and simulations for infrared spectroscopy at the MMT 6.5 m with laser guide star AO, which provides almost full sky coverage. The results show we can expect 40-60% of the photons from a unresolved source within 0.2 arcsec diameter circle for J, H, K, L and M bands under typical atmospheric seeing condition at 2.2 micron. Therefore, the spectrograph entrance slit size should match the 0.2 arcsec image to obtain high throughput. Higher resolution can be achieved by narrowing down the slit size to match the diffraction-limited image core size of about 0.1 arcsec in the infrared. However, the throughput will be correspondingly reduced by a factor of two. Due to the limited atmospheric isoplanatic angle in the J, H and K bands, the encircled photon percentage within 0.2 arcsec diameter drops from 40-60% when the object is at the laser pointing direction to 20-40% when the object is about 30 arcsec away from the laser direction. Therefore, the useful field of view for AO multiple object spectroscopy is about 60 arcsec. Further studies of IR background (sky and thermal) and IR detector performance show that spectral resolution of R = 2,000 can take full advantage of AO images without much penalty due to the dark current of the IR detector and IR OH sky emission lines. We have also studied natural guide star AO spectroscopy. More details are in the paper.Comment: Proceeding SPIE Conference on Adaptive Optics and Applications, 1997, 3126, in press, 12 pages and 6 figs included, also available at http://qso.as.arizona.edu/~jge/projects.htm