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Learners regularly abandon online coding tutorials when they get bored or frustrated, but there are few techniques for anticipating this abandonment to intervene. In this paper, we examine the feasibility of predicting abandonment with machine-learned classifiers. Using interaction logs from an online programming game, we extracted a collection of features that are potentially related to learner abandonment...
Service (API) discovery and recommendation is key to the wide spread of service oriented architecture and service oriented software engineering. Service recommendation typically relies on service linkage prediction calculated by the semantic distances (or similarities) among services based on their collection of inherent attributes. Given a specific context (mashup goal), however, different attributes...
Objectives: Length of stay (LOS) is an important emergency department (ED) performance measure. The objective of this study was to predict the 10th, 50th and 90th percentile of ED LOS using demographic, clinical and temporal characteristics in order to better inform patients and ED staff. Methods: A retrospective cohort study was conducted on one year ED visit data from an academic ED (N=50,824)....
A small signal analysis of DC-DC converters with Average Current Mode Control (ACMC) in Continuous Conduction Mode (CCM) is performed in a unified manner. Design-oriented equations are derived for all three types of DC-DC converters. These equations are such that they are expressed explicitly with converter circuit and operating parameters, making them easy to be directly applicable to practical design...
Design and analysis of a slow-wave structure (SWS) potentially applicable to high power traveling-wave tube (TWT) amplifiers at millimeter-wave frequencies are presented. The circuit characteristics, including the dispersion relation, are predicted. Hot test particle-in-cell (PIC) simulation results will be described employing VORPAL that is based on the conformal finite difference time domain (CFDTD)...
Design and analysis of a slow-wave structure potentially applicable to high power traveling-wave tube (TWT) amplifiers at millimeter-wave frequencies are presented. The circuit characteristics including dispersion relation is predicted. Hot test particle-in-cell (PIC) simulation results will be described employing VORPAL that is based on the conformal finite difference time domain (CFDTD) method.
Itpsilas rare that real-world sensor network deployments confirm the academic assumptions that are made regarding uniformly, or randomly, distributed nodes and their node-pair signal strength measurements. During simulation time, these assumptions have grave affects on network initialization time, end-to-end delay, number of connections per node, network depth, throughput and so on. This paper introduces...
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