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We have come a long way and finally are about to study calculus. Many of you might have taken some courses in the past where you learned a number of formulas to calculate the derivatives and integrals of certain functions. The purpose of this course, however, is not to memorize these formulas mindlessly. Rather, our goals are to understand the mathematical concepts underlying such formulas and ...

The monitoring of herbaceous fuel moisture content is a crucial activity in order to assess savanna fire risks. Faced with the difficulty of managing wide areas of vegetated surfaces, remote sensing appears an attractive alternative for terrestrial measurements because of its advantages related to temporal resolution and spatial coverage. Earth observation (EO)-based vegetation indices (VIs) an...

background to assess the concept of children concerning their health and its risk factors, a group of primary and middle school students were asked to draw a few relevant pictures in order to deeply explore the comprehension of this key group.   methods in this cross-sectional study 1165 students, aged 7-15 years old, selected through random stratified sampling, were asked to draw a number of e...

Life extension of high cost components until measurable damage is detected can result in marked re ductions in total cycle costs. The life extension strategy for turbine disks is based upon nondestructive inspection to detect defects, usage and stress analysis to define requirements, and fracture mechanics analysis and testing to evaluate the severity of any defects under future usage. Because ...

One of the main goals of software development is to provide the user with useful and usable software. Many different techniques are employed to ensure that the analysis, design and construction of software leads to a product with quality in usage. However once a system is shipped and installed at the user’s site the gap between the developer’s idea of usage quality and the user’s needs becomes ...

Web usage mining aims at the discovery of interesting usage patterns from Web server log files. “Interestingness” relates to the business goals of the site owner. However, business goals refer to business objects rather than the page hits and script invocations recorded by the site server. Hence, Web usage analysis requires a preparatory mechanism that incorporates the business goals, the conce...

We review and empirically compare a variety of hierarchical Bayes models that use the data obtained from discrete choice experiments to capture usage behavior under twopart tariffs, as are commonly used in service industries such as telecommunication, cloud computing, and online music downloads. The models enable the simultaneous prediction of consumers' service purchase-, tariff choice-, and u...

Web usage mining applies data mining techniques to records of Web site visits. To better understand patterns of usage, analysis should take the semantics of visited URLs into account. This paper presents a framework for enhancing Web usage records with formal semantics based on an ontology underlying the site. Besides, it elicits automated methods of mapping URLs to application events. Using th...

Refined Kerr electrooptical fringe-pattern methods are used to study time and space variations in the electric field between the electrodes of parallel-plate capacitors filled with liquid nitrobenzene. Photographs of fringe-pattern data recorded during application of high direct (both positive and negative) and sinusoidal voltages, ranging in frequency from 40 to 200 Hz, are compiled to enable ...