In this work, we present a comprehensive treatment of weighted random sampling (WRS) over data streams. More precisely, we examine two natural interpretations of the item weights, describe an existing algorithm for each case ([2,4]), discuss sampling with and without replacement and show adaptations of the algorithms for several WRS problems and evolving data streams.

Abstract As offshore wind power is continuously integrated into the electric systems in around world, it critical to understand its variability. Weather regimes (WRs) can provide meteorological explanations for fluctuations power. Instead of relying on traditional large-scale circulation WRs, this study focuses assessing dependency resources WRs tailored region clustered based finer spatial sca...

Future manned space operations are expected to include a greater use of automation [Cooke and Hine, 2002] This automation will function without human intervention most of the time. However, humans will be required to supervise the automation, and they must be on-call to respond to anomalies or to perform related tasks that are not easily automated. In such an environment, humans perform other t...

Anaerobic digestion of swine wastes is an attractive practice in which both pollution control and energy recovery can be achieved. Nowadays, anaerobic digestion becomes a promising process due to its beneficial output including renewable energy production and mitigation of pollutant emissions. However, the high concentration of ammonium in manure and the produced ammonia as a common metabolic e...

As a group, adults with bilateral symmetric sensorineural hearing loss (SNHL) who receive a monaural hearing aid fitting experience a progressive decline in their word recognition score (WRS) for monosyllabic word materials in the unaided ear but not in the aided ear. However, adults with binaural fittings do not demonstrate a similar deterioration in their WRS. In an effort to determine the ro...

In the present study, comparative proteomic analysis was performed in rats subjected to water immersion‑restraint stress (WRS). A total of 26 proteins were differentially expressed and identified using matrix‑assisted laser desorption/ionization time of flight mass spectrometry. Among the 26 differentially expressed protein spots identified, 13 proteins were significantly upregulated under WRS,...

Time-of-flight neutron diffraction, contour method, and surface hole drilling residual stress measurements were conducted at Los Alamos National Lab (LANL) on a lab sized plate specimen (P4) from Phase 1 of the joint U.S. Nuclear Regulatory Commission and Electric Power Research Institute Weld Residual Stress (NRC/EPRI WRS) program. The specimen was fabricated from a 304L stainless steel plate ...

We present an 8 × 8 wavelength-routing switch (WRS) that monolithically integrates tunable wavelength converters (TWCs) and an 8 × 8 arrayed-waveguide grating. The TWC consists of a double-ringresonator tunable laser (DRR TL) allowing rapid and stable switching and a semiconductor-optical-amplifier-based optical gate. Two different types of dry-etched mirrors form the laser cavity of the DRR TL...

Two experiments were carried out to investigate i) the effects of four levels of lactic acid bacteria inoculants (LAB; 0, 2×10, 3×10 and 4×10 cfu/g fresh forage) and two physical forms of rice straw (whole and chopped rice straw) on silage fermentation quality and nutritive value of rice straw (RS) silage for lactating Holsteins and ii) the effects of the replacement of corn silage (CS) with di...