Cyclically 5-edge-connected cubic planar graphs and shortness coefficients
It is shown that some classes of cyclically 5-edge-connected cubic planar graphs with only one type of face besides pentagons contain non-Hamiltonian members and have shortness coefficients less than unity.
Non-Hamiltonian Simple Planar Graphs
The purpose of this paper is to present various results on the said topic, some of which were announced in [24] while others extend earlier results [22, 23] of the author. In Section 1 we present non-Hamiltonian simple 3-connected planar graph in which the largest face is a 7-gon; Section 2 extends earlier results on non-Hamiltonian simple 3-connected planar graphs in which there are only two types of faces; Section 3 deals with a curious property of a family of some simple 3-connected planar graphs having only quadrangles and hexagons; we finish by two short remarks, one on a theorem of A. Kotzig and another on covering graphs by their Hamiltonian circuits.
Concept design of solar cell satellite dish
Solar panels are devices that consist of solar cells that convert light into electricity. They are called solar on the Sun or “sol” because the Sun is the strongest light source that can be utilized. Solar panels are often called photovoltaic cells, photovoltaic can be interpreted as “light-electricity”. Solar cells or PV cells depend on the photovoltaic effect to absorb the Sun’s energy and cause currents to flow between two opposing charged layers. The purpose of this study is to analyze the satellite dish using solar panels, so this tool is a signal search tool that uses solar energy to run to carry out its functions. As we know that many places or areas that are still often experiencing power outages so that it can hamper and interfere with community activities. Therefore, this research wants to facilitate the public, especially the current generation who need electricity every day so that when there is a power outage, the satellite dish will utilize solar energy as its main source. This research uses a satellite dish as an intermediary to produce electrical energy with the help of solar energy and is collected into a high-voltage battery in the form of electricity, so that it becomes a source of electricity.