A thorough investigation of solar-powered hydrogen potential and accurate location planning for big cities: A case study

2020 ◽  
Vol 45 (56) ◽  
pp. 31599-31611 ◽  
Author(s):  
Ali Mostafaeipour ◽  
Hossein Rezayat ◽  
Mostafa Rezaei
Keyword(s):  
Location Planning ◽  
Big Cities ◽  
Solar Powered

Analysis of the Effect of Tilting Antenna on the Coverage Area of ??the 4G LTE Network (Case Study of Trenggalek District)

2019 ◽  
Vol 9 (4) ◽  
pp. 43-48
Author(s):  
Rizal Aji Istantowi
Keyword(s):  
Base Station ◽  
Base Stations ◽  
Optimal Conditions ◽  
Coverage Area ◽  
Lte Networks ◽  
Lte Network ◽  
Big Cities ◽  
4G Lte ◽  
4G Lte Networks

4G LTE networks in big cities are already well available. Meanwhile, on small to medium-sized cities, the 4G LTE network is not evenly distributed and maximized. This study chooses the variable tilting antenna to the coverage area, because in sending information from a base station using an antenna. The average RSRP value (dBm) of the existing base station in the calculation with a distance of 200 m is -122.90 dBm, a distance of 500 m is -136.79 dBm, and a distance of 1000 m -147.30 dBm. Meanwhile, in the simulation with a distance of 200 m of -108.22 dBm, a distance of 500 m of -121.81 dBm, and a distance of 1000 m of -132.69 dBm. The coverage area value of the existing base station in the calculation is 5.29%, while in the simulation it is 11.18%. The average RSRP value (dBm) at optimal conditions for calculations at a distance of 200 m is -80.13 dBm, at a distance of 500 m is -94.03 dBm and at a distance of 1000 m is -104.56 dBm. Meanwhile, the simulation at a distance of 200 m is -98.09 dBm, at a distance of 500 m is -112.79 dBm and at a distance of 1000 m is -123.31 dBm. The value of the coverage area for the calculation is 20.32%, while for the simulation it is 15.01%. The current need for base stations in Trenggalek District that has been met is 68%.

scholarly journals Investigation of solar-powered drip irrigation: The case study of the Jordan Valley 

2017 ◽  
Vol 63 (No. 4) ◽  
pp. 168-171
Author(s):  
Perakis Christoforos ◽  
Kyriakarakos George ◽  
Hani Nabeel Bani ◽  
Hammad Shaker ◽  
Damasiotis Markos
Keyword(s):  
Drip Irrigation ◽  
Energy System ◽  
Electricity Production ◽  
Diesel Generator ◽  
Jordan Valley ◽  
Battery System ◽  
Electrical Grid ◽  
Solar Powered ◽  
The Cost

Agriculture is the sector that consumes by far most water globally. Much research efforts aim at minimizing losses through the use of drip irrigation. Rural agricultural areas often do not have access to a main electrical grid to power the pumps needed for drip irrigation; it reduces the options in paying for a grid extension, getting a diesel generator or investing in an off-grid renewable energy system. In this paper, these alternatives are assessed technically and economically under real world conditions through the Jordan Valley case study. The results show that the autonomous photovoltaic (PV)-battery system is preferable to the use of a diesel generator, as well as it is preferable to the main grid extension in many cases depending on the cost of grid electricity and distance from the grid. For current subsidized grid electricity retail price to farmers, the PV-battery system becomes more attractive above a 300 m distance from the grid, while if the actual cost of electricity production in Jordan is taken into account, then it breaks even to 128 m. 

A case study for the effectiveness of solar-powered attic ventilation fans

2014 ◽  
Vol 8 (4) ◽  
pp. 691-698 ◽  
Author(s):  
Ok-Youn Yu ◽  
Stacy Moore
Keyword(s):  
Solar Powered

scholarly journals PROMOTIONAL STRATEGIES IN JAPAN TOURISM INDUSTRY: A CASE STUDY IN FUKUI PREFECTURE

2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Filia Filia
Keyword(s):  
Personal Selling ◽  
Tourism Industry ◽  
Regional Government ◽  
Social Networking Service ◽  
Tourist Destination ◽  
Strategy Innovation ◽  
Study Case ◽  
Big Cities ◽  
Promotional Strategies

This paper gives an overview of the innovation strategies in Japan tourism industry, a study case in Fukui Prefecture. Fukui is not as a major tourist destination in Japan. Maybe people are more familiar with Tokyo, Kyoto and other big cities in Japan. It is common that foreign tourists prefer to travel to big cities or famous places. To make Fukui prefecture known in overseas, local government enacts policy strategies by utilizing all potentials. This paper explains concretely by the efforts made by the regional government. Regional government established Fukui-ken Kankou Shinsenryaku’s policy. Fukui Prefectural Tourism Strategy Policy is implemented through promotion. Promotions are made through personal selling by utilizing foreigners living in Fukui. Foreigners in Fukui are invited to become Fukui reporters and ambassadors. As a Fukui reporter and the Fukui ambassador, they have a duty to promote Fukui through SNS (Social Networking Service). They also get priviledge, such as get free and discount entry to museum, and other tourism destination.The effectiveness of the strategy innovation is also presented in this paper by using visitor arrival’s data based on Fukui-ken Kankoukyaku Irikomisuu.

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