the aim of this study was to identify various sulfidic mineralized zones in the ghare-tappeh cu deposit (nw iran) based on geo-electrical data including induced polarization (ip) and resistivity (rs) using the concentration-volume (c-v) and number-size (n-s) fractal models. the fractal models were used to separate high and moderate sulfidic zones from low sulfidic zones and barren wall rocks. b...

A major goal of landscape ecology is to understand the formation, dynamics, and maintenance of spatial heterogeneity. Spatial heterogeneity is the most fundamental characteristic of all landscapes, and scale multiplicity is inherent in spatial heterogeneity. Thus, multiscale analysis is imperative for understanding the structure, function and dynamics of landscapes. Although a number of methods...

Abstract A fractal patch antenna is designed and fabricated on FR4-epoxy substrate for Internet of Things (IoT) applications. Minkowski has been used in the design radiating element slots are incorporated partial ground structure. The proposed miniaturized by 65% terms resonating frequency using ftactal. structure an overall size 60× 40 ×1.6 mm3. resonates at 1.223, 1.58, 2.69, 3.54 GHz. It exh...

<span>In this paper, six-band resonant fractal antenna architecture is proposed and fabricated. The ultimate shape established after six iterations. resonator starshaped, each iteration, a hexadecagon from the subtracted. designed calculated by numerical simulation based on finite element <span>method (ANSYS HFSS) integration technique (CST studio). experimental</span> measure...

Air pollution seriously threatens human health and even causes mortality. It is necessary to explore effective prevention methods mitigate the adverse effect of air pollution. Shaping a reasonable built environment has potential benefit health. In this context, study quantified environment, pollution, mortality at 1 km × grid cells. The moderating model was used how factors affect impact on cau...

With the rapid development of wireless communication systems, the multiple separated frequency bands antenna has become one of the most important circuit elements and attracted much interest. In order to satisfy the IEEE 802.11 WLAN standards and the worldwide interoperability for microwave access (WiMAX) bands, various antennas for wide band operation have been studied for communication and ra...

The occurrence of power law relationships in the spatial distribution of sedimentary lithotopes has been identified in both modern and ancient carbonate depositional bodies. In this study, facies patterns and their spatial relationships are investigated quantitatively in an Arabian Gulf shallow subtidal carbonate ramp setting, using a synergy of IKONOS satellite imagery and vessel-based acousti...

Sea clutter is the backscattered returns from a patch of the sea surface illuminated by a radar pulse. The amplitude waveforms of sea clutter and indoor radio propagation are very complicated. Can the apparent randomness of these waveforms be attributed to be generated by low-dimensional chaos? Based on the assumption that a chaotic attractor is characterized by a noninteger fractal dimension a...