Microphotonic filters require precise control of the relative resonance frequencies of integrated dielectric micro-cavities. Using high-index-contrast microring resonators, we present, demonstrate, and analyze techniques allowing small and accurate corrections of resonance frequencies at fabrication. ©2006 Optical Society of America OCIS codes: (230.3120) Integrated optics devices; (230.4000) M...

In developing countries like South Africa processed geographic information systems (GIS) data on land suitability, is often not available for land use management. Data in this article is based on a published article "The strategically located land index support system for humans settlements land reform in South Africa" (Musakwa et al., 2017) [1]. This article utilities data from Musakwa et al. ...

This work presents a micromachined RF-CMOS transformer fabricated in a commercially available 0.18μm CMOS process. Maskless micromachining post-processing is used to remove oxide and substrate material from around the transformer, reducing parasitic effects and improving the performance of the transformer. Index Terms — baluns, CMOS integrated circuits; MEMS, maskless micromachining, Q enhancem...

Mobile device has limited battery power, the minimization of the access time and tuning time for the broadcast data is an important problem. There have been many research efforts that focus on minimizing access time and tuning time by providing indexes on the broadcast data. This paper proposes two level energy efficient signatures indexing techniques over the multichannel to reduce power consu...

We present a parameter free and monotonic alternative to the parametric variable precision model of rough set data analysis, based on the well known PRE index λ of Goodman and Kruskal. Using weighted (parametric) λ models we show how expert knowledge can be integrated without losing the monotonic property of the index. Based on a weighted λ index we present a polynomial algorithm to determine a...

The modulation of tropical cyclone activity by the Madden–Julian oscillation (MJO) is explored using an empirical genesis potential (GP) index. Composite anomalies of the genesis index associated with the different MJO phases are consistent with the composite anomalies in TC genesis frequency that occur in the same phases, indicating that the index captures the changes in the environment that a...

We present a novel approach for a tool that assists the database administrator in designing an index connguration for a relational database system. A new methodology for collecting usage statistics at run time is developed which lets the optimizer estimate query execution costs for alternative index conngurations. Deening the workload specii-cation required by existing index design tools may be...

Background: The release of metals from industrial factories is one of the most important sources of environmental pollution. The present study aimed to determine the concentration of heavy metals like cadmium (Cd), chromium (Cr), manganese (Mn), nickel (Ni), and lead (Pb) in dust around the cement factory. Methods: A total of 22 dust samples were collected from areas around the cement factory...