Collaborative Broadcast in O(log log n) Rounds

We consider the multihop broadcasting problem for $n$ nodes placed uniformly at random in a disk and investigate the number of hops required to transmit a signal from the central node to all other nodes under three communication models: Unit-Disk-Graph (UDG), Signal-to-Noise-Ratio (SNR), and the wave superposition model of multiple input/multiple output (MIMO). In the MIMO model, informed nodes cooperate to produce a stronger superposed signal. We do not consider the problem of transmitting a full message nor do we consider interference. In each round, the informed senders try to deliver to other nodes the required signal strength such that the received signal can be distinguished from the noise. We assume sufficiently high node density $\rho= \Omega(\log n)$. In the unit-disk graph model, broadcasting needs $O(\sqrt{n/\rho})$ rounds. In the other models, we use an Expanding Disk Broadcasting Algorithm, where in a round only triggered nodes within a certain distance from the initiator node contribute to the broadcasting operation. This algorithm achieves a broadcast in only $O(\frac{\log n}{\log \rho})$ rounds in the SNR-model. Adapted to the MIMO model, it broadcasts within $O(\log \log n - \log \log \rho)$ rounds. All bounds are asymptotically tight and hold with high probability, i.e. $1- n^{-O(1)}$.Comment: extended abstract accepted for ALGOSENSORS 201

A comparative stratigraphy of cilicia : Results of the first three cilician chronology workshops

This article presents a preliminary comparative stratigraphy of excavated sites in Plain Cilicia and one in Rough Cilicia. It is the outcome of three workshops held in 2014, 2015 and 2017. Plain Cilicia at the junction of Anatolia, Syro-Mesopotamia and Cyprus is one of the most fertile regions of the Ancient Near East. In recent years, archaeological research in the region has intensified, re-opening questions of chronology. The comparative stratigraphy discussed in the workshops is presented here in form of a gazetteer of the participating sites and a chart. This is to be understood as a first step towards a more comprehensive chronology

Melt blending of poly(ethylene terephthalate) with polypropylene in the presence of silane coupling agent

A silane coupling agent (SCA) was used as a compatibilizer for polypropylene-poly(ethylene teraphthalate) (PP-PET) blends with 20, 40, 50, and 60% PET compositions by weight. PP-PET mixtures were blended with and without an SCA by a single-screw extruder. The effect of silane modification on the tensile and impact properties of the blends was investigated. The morphology and thermal behavior of the blends were examined with scanning electron microscopy (SEM) and differential scanning calorimetry (DSC), respectively. The presence of the SCA used in this work extensively improved the mechanical properties of the blends. Mechanical properties were found to be highly de-pendent on the numbers Of extrusions. SEM studies showed that substantially different morphology with better adhesion existed when SCA-treated blends were compared to non-treated PP-PET blends. The presence of individual melting temperatures of the polymers in all compositions with no significant T,, depression indicated that PET and PP were crystallized separately. (C) 2003 Wiley Periodicals, Inc

Is nasal nitric oxide is always a good biomarker in allergic rhinitis?

Congress of the European-Academy-of-Allergy-and-Clinical-Immunology -- JUN 17-21, 2017 -- Helsinki, FINLANDKalpaklioglu, A. Fusun/0000-0002-6548-6932WOS: 000408773101267…European Acad Allergy & Clin Immuno

Occupational respiratory diseases in mosque workers

Congress of the European-Academy-of-Allergy-and-Clinical-Immunology -- JUN 17-21, 2017 -- Helsinki, FINLANDKalpaklioglu, A. Fusun/0000-0002-6548-6932WOS: 000408773104093…European Acad Allergy & Clin Immuno

Refractory olivine bricks application from the Agla-Koycegiz (Turkey) dunite

Suitability of the Agla-Koycegiz dunites for manufacturing olivine bricks was assessed by addition of the Kumas fine sintered magnesia in 10, 20, 30 and 40% proportions. The average value of MgO for Agla dunites is around of 46wt.%. Magnesium sulphate was used as a chemical binder and gets good resistance to the mixes before firing. High Fe2O3 content of the Agla dunites help to sintering process. Addition of the sintered magnesia and magnesium sulphate to the mixes increases MgO/SiO2 ratio. Phase composition, bulk density and cold crushing results at 1625degreesC show that these mixes are not mature ceramic

Study on Efem Cukuru Gold Ore Deposit and Recovery of Gold by Flotation

This study reports the information about Efem cukuru gold ore deposit and the results of the flotation experiments Classical first-order kinetic flotation model was used for the evaluation of the experimental data, recovery and flotation rate constants describing the flotation time-recovery profiles for different reagent combinations

Geology, mineralogy and geochemical properties of the Çaldag Ni-Co laterite deposits [Çaldag (turgutlu-manisa) lateritik Ni-Co yatagının jeolojisi, mineralojisi ve jeokimyasal özellikleri]

Çaldag Ni-Co deposit covers an area approximately 10 km2 on the Çaldag horst of Gediz Graben. This world class Ni-Co deposit has recently started to be exploited. Extensive exploration drilling on the mineralization proved a reserve of 38 million tonnes, with a grade of 1.14% nickel and 0.05% cobalt. Showing complex and zoned structures, Çaldag mineralization is analogous to the New Caledonian type residual nickel deposits that are formed by the intense tropical weathering (lateritization) of the peridotites which consist of trace amounts of nickel. Çaldag Ni-Co mineralization is developed over the ultramafic rocks of Late Cretaceous-Early Paleocene ophiolitic mélange. The ophiolitic mélange consists of limestone blocks, radiolaria, and serpentinized ultramafic rock masses set in a matrix composed of interbedded sandstone-shale, spilitic volcanic rocks with pelagic limestone and shale intercalations. Peridotites with variable serpentinization are mainly composed of dunite, harzburgite and pyroxenite. The ophiolitic mélange was emplaced tectonically on the basement rocks of Menderes masif. The whole succession is uncomformably overlain by Upper Miocene-Lower Pliocene lacustrine sediments. Whole rock, trace and REE analysis on volcanic rocks implies that they have tholeiitic magmatic source and they formed in intra oceanic-arc environment. The primary Ni-bearing ore phases in serpentinized peridotites are pentlandite and associated nickel-sulfide alloys. In Çaldag mineralization, lateritic profile consists of serpentinized peridotites (% 0,2-1,2 Ni; % 0,04-0,11 Co), ironoxide and clay-rich saprolite (% 0,02-5,6 Ni; % 0,02-5,2 Co), carbonate and gypsum-bearing laterite (%0,2-1,2 Ni; % 0,04-0,11Co), and silica rich laterite (% 0,2-1,2 Ni; % 0,04-0,11 Co) with different Ni-Co contents. Two different lateritization stages are determined in the enrichment of Ni-Co ore; 1) Colloform goethite, limonite and hematite, Ni-Co asbolane and manganese oxides are mainly formed during the first lateritization stage (Upper Paleocene-Middle Eosene). Laterite was carried tectonically towards north to its present place by thrust faults during Upper Eocene. 2) The second lateritization took place in Oligocene, beside the colloform ore, takovite, pecoraite, manganese oxides, gypsum, bravoite, pyrite, marcasite and clay minerals such as nimite, halloysite, montmorillonite were deposited either as fracture infills or brecciated masses. Following the second lateritization event, the Çaldag lateritic deposit was covered by Mio-Pliocene terrestriallacustrine sedimentary units. During the Neotectonic period, the region was dissected by high-angle normal faults resulted in NW-SE trending horst and graben structures. The Çaldag horst was uplifted during this stage and the Plio-Quaternary alluvial fans were formed around the Çaldag Horst due to erosion of the rising blocks. Finally, the latest event resulted in erosion of the cover series and the Çaldag lateritic deposit cropped out over the Çaldag Horst