Post-disaster 4G/5G Network Rehabilitation using Drones: Solving Battery and Backhaul Issues

Drone-based communications is a novel and attractive area of research in cellular networks. It provides several degrees of freedom in time (available on demand), space (mobile) and it can be used for multiple purposes (self-healing, offloading, coverage extension or disaster recovery). This is why the wide deployment of drone-based communications has the potential to be integrated in the 5G standard. In this paper, we utilize a grid of drones to provide cellular coverage to disaster-struck regions where the terrestrial infrastructure is totally damaged due to earthquake, flood, etc. We propose solutions for the most challenging issues facing drone networks which are limited battery energy and limited backhauling. Our proposed solution based mainly on using three types of drones; tethered backhaul drone (provides high capacity backhauling), untethered powering drone (provides on the fly battery charging) and untethered communication drone (provides cellular connectivity). Hence, an optimization problem is formulated to minimize the energy consumption of drones in addition to determining the placement of these drones and guaranteeing a minimum rate for the users. The simulation results show that we can provide unlimited cellular service to the disaster-affected region under certain conditions with a guaranteed minimum rate for each user.Comment: 2018 IEEE Global Communications Conference: Workshops: 9th International Workshop on Wireless Networking and Control for Unmanned Autonomous Vehicle

The effects of different combinations and varying concentrations of growth regulators on the regeneration of selected Turkish cultivars of melon

Cucurbits are an economically important family of plants. The majority of the vegetable production in Turkey, for example, derives from the species beloning to the family Cucurbitaceae. Despite the importance of cucurbits among vegetable crops worldwide, the development of genomic tools in these species has been rather limited. Although melon production has been improved by conventional plant breeding methods, output is still insufficient. One useful technique in overcoming such problems in melon is functional genomics’ studies, and the other one is abiotic stress resistance and improved fruit quality has been gene transfer via Agrobacterium tumefaciens mediated transformation. The availability of an optimized plant regeneration system is crucial for genetic transformation techniques as well as obtaining an entire plant. Although Hasanbey and Cinikiz in Turkey, for example, are important commercial melon cultivars used in the breeding programs and molecular biology of fruit ripening and genetic mapping of melons, there is no study to date on the regeneration of these cultivars

3 case studies: a hybrid educational strategy for ART/SCI collaborations

In this paper we report on a transdisciplinary university course designed to bring together fine art/visual communication design and computer science students for the creation and implementation of collaborative visual/audio projects that draw upon the specialized knowledge of both these disciplines. While an overview of the syllabus and the teaching methodologies is undertaken in the introduction, the focus of the paper concentrates upon an in-depth discussion and analysis of 3 specific projects that were developed by 3 distinct teams of students comprised of one artist/designer and one engineer each

Hyperpresent avatars

This paper will discuss two student projects, which were developed during a hybrid course between art/design and computer sciences at Sabancı University; both of which involve the creation of two avatars whose visual attributes are determined by data feeds from ‘Real Life’ sources by following up from Biocca's concept of the Cyborg’s Dilemma, we will describe the creative and technological processes which went into the materialization of these two avatars

Employment Effects of FTA Agreements: The Perspectives from Bangladesh

Bangladesh has entered into several regional FTA agreements and is in the process of signing bilateral FTA agreements with a number of countries. The study uses several models such as WITS/SMART global partial equilibrium model, SAM multiplier model, CGE model and an employment satellite matrix to explore the employment effects in Bangladesh out of three different FTA scenarios. In the WITS/SMART model, three FTA scenarios are run which assume full elimination of bilateral tariff between Bangladesh and India (under Bangladesh-India bilateral FTA), full elimination of bilateral tariff between Bangladesh and Malaysia (under Bangladesh-Malaysia bilateral FTA) and full elimination of tariff on trade among the BIMSTEC member countries (under BIMSTEC). The analysis of the macro impacts of the FTA scenarios suggest that such bilateral and regional FTAs would be beneficial for Bangladesh in terms of impact on consumer prices, exports, real wages and employment. At the sectoral level, a number of export oriented sectors would gain from such FTAs. However, the sectoral level impacts also suggest that a large number of sectors would experience fall in production because of large inflow of imports, which will result in loss in employment in these sectors. Therefore, these FTAs have important sectoral implications in terms of production, exports, import and employment. It however appears that at the aggregate level employment would rise which would mean that the loss in employment in some sectors will be more than compensated by rise in employment in other sectors. Therefore, the net effect on employment is likely to be positive