Results of the 1980 NASA/JPL balloon flight solar cell calibration program

Thirty-eight modules were carried to an altitude of about 36 kilometers. In addition to the cell calibration program, an experiment to evaluate the calibration error versus altitude was performed. The calibrated cells can be used as reference standards in simulator testing of cells and arrays

Results of the 1979 NASA/JPL balloon flight solar cell calibration program

Calibration of solar cells to be used as reference standards in simulator testing of cells and arrays was accomplished. Thirty-eight modules were carried to an altitude of about 36 kilometers during the solar cell calibration balloon flight

Results of the 1981 NASA/JPL balloon flight solar cell calibration program

The calibration of the direct conversion of solar energy through use of solar cells at high altitudes by balloon flight is reported. Twenty seven modules were carried to an altitude of 35.4 kilometers. Silicon cells are stable for long periods of time and can be used as standards. It is demonstrated that the cell mounting cavity may be either black or white with equal validity in setting solar simulators. The calibrated cells can be used as reference standards in simulator testing of cells and arrays

LEAN Presentation

The Library\u27s student employment program introduces students to the principles and methods of Lean, a process, and service improvement methodology that is focused on increasing customer-defined value.https://digitalcommons.xula.edu/xula_lmi/1003/thumbnail.jp

Evidence for the Bypass of the Response-Selection Bottleneck in Tasks with Reflexive Responses in Younger and Older Adults

This study investigated dual-task processing in younger and older adults using a psychological refractory period procedure. The first task was to name the color framing a picture; the second task was to either press a button or tilt their body in the direction of the tilt of the picture. In the body-tilt condition, electromyography was used to determine the reaction time. The stimulus-onset asynchrony (SOA) between the onset of the color and tilting of the picture varied from 50 to 1000 ms. In contrast with the response selection bottleneck model, which claims that processing of a second task cannot be completed until the first task is finished, the mode of response for the two tasks directly impacted the ability to avoid the bottleneck. In the body-tilt condition the increase in reaction time to the second task with decreasing SOA was less than in the button press condition, suggesting that processing of the second task could begin before processing of the first task was completed. This was true for both younger and older adults. Contrary to previous findings that older adults cannot engage in simultaneous processing of two tasks, evidence was found that older adults, like younger adults, could bypass the cognitive bottleneck if the second task has a reflexive component

No evidence of a significant role for CTLA-4 in multiple sclerosis

Variation in the cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) gene plays a significant role in determining susceptibility to autoimmune thyroid disease and type 1 diabetes. Its role in multiple sclerosis is more controversial. In order to explore this logical candidate more thoroughly, we genotyped 771 multiple sclerosis trio families from the United Kingdom for the 3? untranslated region variable number tandem repeat, the CT60 single nucleotide polymorphism (SNP) and five haplotype-tagging SNPs. No individual marker or common haplotype showed evidence of association with disease. These data suggest that any effect of CTLA-4 on multiple sclerosis susceptibility is likely to be very small

Psychology and pedagogical conditions of the organization of diagnostics of educational achievements of students with testing use

Psychology and pedagogical conditions which need to be considered at the organization and carrying out diagnostics of educational achievements of students with use testing at any grade level are shown in articleВ статье показаны психолого-педагогические условия, которые необходимо учитывать при организации и проведении диагностики учебных достижений студентов с использованием тестирования на любом этапе обучени

Spline Fractional Polynomial for Computing Fractional Differential Equations

نقترح طريقة سبلاين الكسرية للمعادلات التفاضلية الكسرية الخاضعة للشروط الأبتدائية.  ان استخدام تكامل واشتقاق كابوتو(Caputo) الكسرية يؤدي الى انشاء استيفاء سبلاين بمعاملات متعددة الحدود. تمت دراسة حدود الخطأ لدالة سبلاين المفروضة و كان تحليل الأستقرار مكتملا. تم النظر في التفسير العددي للطريقة المقدمة بأستخدام ثلاثة أمثلة.  أظهرت النتائج أن طريقة سبلاين الكسرية التي تقحم المعامل مع متعددة الحدود الكسرية فريدة من نوعها.We propose a fractional spline method for solving fractional differential equations subject to initial conditions. Using the Caputo fractional integral and derivative have to construct the spline interpolation with polynomial coefficients. For the given spline function, error bounds were studied and a stability analysis was completed. The numerical explanation for the provided method was considered using three examples. The results show that the fractional spline function which interpolates data is productive and profitable in solving unique problems.&nbsp