Modal frequencies and damping coefficients are crucial quantities to characterize predict the structural behaviour of wind excited structures. Wind turbines in parked conditions can be treated as telecommunication or lighting towers, for which a fair amount experimental studies is available. However, natural may change dramatically operating conditions. In this case, investigations quite few li...

The importance of locating a mobile phone has increased significantly during last decade for security and commercial reasons. Locating the leads to people. This is done by using most common propagation models in network design calculate distance between base station, addition positioning algorithms predict location station. In this work, three telecommunication towers that provide service Zain ...

Water cooling by ambient takes place with two mechanisms of heat and mass transfer. Using packings at wet cooling towers has disadvantages such as obstruction, reduction of life expectancy and production of algae and fungi. In shower cooling towers types of towers packings are completely removed and water intake is in direct contact and heat transfer takes place in two ways of latent and sensib...

as a robot could be stable statically standing on three or more legs, a six legged walking robot can be highly flexible in movements and perform different missions without dealing with serious kinematic and dynamic problems. an experimental six legged walking robot with 18 degrees of freedom is studied and built in this paper. the kinematic and gait analysis formulations are demonstrated by an e...

A tower of homotopy fiber sequences gives rise to a spectral sequence on homotopy groups. In modern times such towers are ubiquitous, and most of the familiar spectral sequences in topology can be constructed in this way. A pairing of towers W∗ ∧X∗ → Y∗ consists of maps Wm ∧Xn → Ym+n which commute (on-the-nose) with the maps in the towers. It is a piece of folklore that a pairing of towers give...

At the moment, Moshanir loading code which has been provided by Tavanir Company in 1998 is used for loading transmission line towers. Also ASCE52 are applied for designing these structures. In the above Moshanir loading code, loading parameters such as, maximum yearly ice thickness, maximum monthly ice thickness, maximum yearly wind speed and maximum monthly wind speed have been considered as ...

Estimates suggest that each year millions of birds, predominantly Neotropical migrating songbirds, collide with communication towers. To determine the relative collision risks that different nighttime Federal Aviation Administration (FAA) communication tower obstruction lighting systems pose to night-migrating birds, we compared fatalities at towers with different systems: white strobe lights o...

PT. Dayamitra Telekomunikasi or Mitratel is a subsidiary of PT Telkom Indonesia (Persero) Tbk which engaged in providing telecommunications infrastructure. has been the tower business since 2008. To date, managed more than 13,700 telecommunication towers spread throughout Indonesia. The choice website as company's communication medium with public right decision considering that can provide info...

This work presents improvements to a telecommunication service planning tool for optimal positioning of base stations presented in previous work. The uses propagation loss model based on the K-Nearest Neighborhoods classifier since its conception. original objective this is optimize transmitting towers frequencies 2.1 GHz and 2.6 given environment, maximizing coverage area. improvement proposed...

For most of the CMS ECAL, a 6 crystal by 6 crystal array of physical calorimeter towers is mapped into trigger towers. There is a 1:1 correspondence between the HCAL and ECAL trigger towers. The trigger tower size is equivalent to the HCAL physical towers, .087 x .087 in η x φ. The φ size remains constant in ∆φ and the η size remains constant in ∆η out to an η of 2.1, beyond which the η size do...