This paper describes a DC isolated network which is fed with Distributed Generation (DG) from photovoltaic (PV) renewable sources for supplying unbalanced AC loads. The battery energy storage bank has been connected to the DC network via DC/DC converter to control the voltage of the network and optimize the operation of the PV generation units. The PV arrays are connected to the DC network ...

Curl and truncated spiral antennas are studied for input impedance matching a coaxial line. Each antenna is located at quarter wavelengths above the ground plane analyzed using moment method. It found that curl shows voltage standing wave ratio (VSWR) of less than two in 3-dB axial bandwidth 30% crank feedline with an unbalanced feed. also has 24%, where VSWR remains parallel feedlines quasi-ba...

Bu çalışmanın amacı 1968-2006 döneminde Türkiye’de dengesiz büyümeye ilişkin hangi seçeneğin geçerli olduğunu tespit etmektir. amaç doğrultusunda, önce büyümedeki seçeneklere tespitlerde bulunulmuştur. Dengesiz büyüme stratejisindeki seçenekler iki tanedir. Bunlardan ilki, yatırımların öncelikle doğrudan üretken faaliyetlere aktartılması iken ikinci seçenek sosyal sabit sermayeye yani altyapıya...

Context: The electric parameters of the power networks are usually analysed through deterministic power flows; however, the variation in load demands and power fluctuation of renewable generators cannot be considered with the deterministic power flows because it uses specific power values. The probabilistic power flow methods are better for this purpose since they apply techniques to include an...

The impact of soil nutrient depletion on crop production has been known for decades, but robust assessments of the impact of increasingly unbalanced nitrogen (N) and phosphorus (P) application rates on crop production are lacking. Here, we use crop response functions based on 741 FAO maize crop trials and EPIC crop modeling across Africa to examine maize yield deficits resulting from unbalanced...

The first appearance of the broadband transmission line transformer occurred in 1944, in a paper published by George Guanella [1] in the BraunBoveri Review. In that paper, he expounded the principles of this broadband impedance matching device and is considered the inventor. His goal was to design a broadband balun (balanced-to-unbalanced) for the HF band, matching the balanced impedance of 960...

We introduce the Minimum-size bounded-capacity cut (MinSBCC) problem, in which we are given a graph with an identified source and seek to find a cut minimizing the number of nodes on the source side, subject to the constraint that its capacity not exceed a prescribed bound B. Besides being of interest in the study of graph cuts, this problem arises in many practical settings, such as in epidemi...

The new concept of an unbalanced, hierarchicallydivided cache memory system is introduced and analyzed. This approach generalizes existing cache structures by allowing different memory references (e.g. as possibly unevenly divided within an address-space) to be subject to various levels of caching as well as varied amounts of cache at each level. Under the assumption that the total cache size a...