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Risk analysis of offshore terminals in the Caspian Sea
Mokhtari, Kambiz,Amanee, Jamshid Techno-Press 2019 Ocean systems engineering Vol.9 No.3
Nowadays in offshore industry there are emerging hazards with vague property such as act of terrorism, act of war, unforeseen natural disasters such as tsunami, etc. Therefore industry professionals such as offshore energy insurers, safety engineers and risk managers in order to determine the failure rates and frequencies for the potential hazards where there is no data available, they need to use an appropriate method to overcome this difficulty. Furthermore in conventional risk based analysis models such as when using a fault tree analysis, hazards with vague properties are normally waived and ignored. In other word in previous situations only a traditional probability based fault tree analysis could be implemented. To overcome this shortcoming fuzzy set theory is applied to fault tree analysis to combine the known and unknown data in which the pre-combined result will be determined under a fuzzy environment. This has been fulfilled by integration of a generic bow-tie based risk analysis model into the risk assessment phase of the Risk Management (RM) cycles as a backbone of the phase. For this reason Fault Tree Analysis (FTA) and Event Tree Analysis (ETA) are used to analyse one of the significant risk factors associated in offshore terminals. This process will eventually help the insurers and risk managers in marine and offshore industries to investigate the potential hazards more in detail if there is vagueness. For this purpose a case study of offshore terminal while coinciding with the nature of the Caspian Sea was decided to be examined.
Agraw Amane,Gurja Belay,Yao Nasser,Martina Kyalo,Tadelle Dessie,Adebabay Kebede,Tesfaye Getachew,Jean‑Baka Domelevo Entfellner,Zewdu Edea,Olivier Hanotte,Getinet Mekuriaw Tarekegn 한국유전학회 2020 Genes & Genomics Vol.42 No.10
Background Ethiopian sheep living in diferent climatic zones and having contrasting morphologies are a most promising subject of molecular-genetic research. Elucidating their genetic diversity and genetic structure is critical for designing appropriate breeding and conservation strategies. Objective The study was aimed to investigate genome-wide genetic diversity and population structure of eight Ethiopian sheep populations. Methods A total of 115 blood samples were collected from four Ethiopian sheep populations that include Washera, Farta and Wollo (short fat-tailed) and Horro (long fat-tailed). DNA was extracted using Quick-DNA™ Miniprep plus kit. All DNA samples were genotyped using Ovine 50 K SNP BeadChip. To infer genetic relationships of Ethiopian sheep at national, continental and global levels, genotype data on four Ethiopian sheep (Adilo, Arsi-Bale, Menz and Black Head Somali) and sheep from east, north, and south Africa, Middle East and Asia were included in the study as reference. Results Mean genetic diversity of Ethiopian sheep populations ranged from 0.352±0.14 for Horro to 0.379±0.14 for ArsiBale sheep. Population structure and principal component analyses of the eight Ethiopian indigenous sheep revealed four distinct genetic cluster groups according to their tail phenotype and geographical distribution. The short fat-tailed sheep did not represent one genetic cluster group. Ethiopian fat-rump sheep share a common genetic background with the Kenyan fat-tailed sheep. Conclusion The results of the present study revealed the principal component and population structure follows a clear pattern of tail morphology and phylogeography. There is clear signature of admixture among the study Ethiopian sheep populations
Helicopter-Satellite Communication Experiment for Disaster Information Transmission
Fujino, Yoshiyuki,Satoh, Masaki,Miura, Amane,Minowa, Tadashi,Nagai, Seiji,Taira, Shinichi 통신위성우주산업연구회 2005 Joint Conference on Satellite Communications Vol.2005 No.-
We present the helicopter-satellite communication system that was successfully developed and demonstrated for the first time. Time diversity and blade-synchronized data transmission to avoid the shadowing due to rotor blades of the helicopter, satellite and polarization auto-tracking, semi-moving picture transmission and position fixing of the picture scene etc will be presented.
Belhimria, Rajae,Boukheir, Sofia,Samir, Zineb,Len, Adel,Achour, Mohammed Essaid,Eber, Nandor,Costa, Luis Cadillon,Oueriagli, Amane Korean Society of Microscopy 2017 Applied microscopy Vol.47 No.3
The dielectric relaxation characteristics of composites with different concentrations of carbon nanotubes loaded in an epoxy polymer matrix has been studied as a function of frequency over a wide range (1 Hz~10 MHz) at room temperature. Two characterization techniques were used in this work to measure and calculate the dimensionality parameters: small angle neutron scattering and impedance spectroscopy. The results obtained from both methods are in good agreement, indicating the reliability of the estimated fractal dimension, despite of the difference in the length scales accessed by the two techniques.