Stable schedule matching under revealed preference

Baiou and Balinski (Math. Oper. Res., 27 (2002) 485) studied schedule matching where one determines the partnerships that form and how much time they spend together, under the assumption that each agent has a ranking on all potential partners. Here we study schedule matching under more general preferences that extend the substitutable preferences in Roth (Econometrica 52 (1984) 47) by an extension of the revealed preference approach in Alkan (Econom. Theory 19 (2002) 737). We give a generalization of the GaleShapley algorithm and show that some familiar properties of ordinary stable matchings continue to hold. Our main result is that, when preferences satisfy an additional property called size monotonicity, stable matchings are a lattice under the joint preferences of all agents on each side and have other interesting structural properties

Synthesis, Characterization and Antibacterial Activity of Imidazole Derivatives of 1,10-Phenanthroline and their Cu(II), Co(II) and Ni(II) Complexes

Six new CuL1 (L1 = 4-bromo-2-(1H-imidazo[4,5-f][1,10]phenanthroline-2-yl)phenol), CoL1, NiL1, CuL2 (L2 = 2-(1H-imidazo[4,5-f] [1,10]phenanthroline-2-yl)-5-methoxyphenol), CoL2 and NiL2 complexes were synthesized. L1 and L2 ligands were prepared by the condensation of 1,10-phenanthroline-5,6-dione with 5-bromosalicylaldehyde and 2-hydroxy-4-methoxybenzaldehyde, respectively. The structures of the compounds were determined by elemental analyses, IR,UV-visible, 1H-NMR, TGA, magnetic susceptibilities and molar conductance measurements. It is observed that the synthesized complexes have tetragonal and distorted square pyramidal geometrical structures. Antibacterial activity of the ligands and their metal complexes were tested against selected bacteria by disc diffusion method.KEY WORDS 1,10-Phenanthroline, imidazole, complex, antibacterial activity

Association of Symptomatic Human Infection with Toxoplasma gondii with Imbalance of Monocytes and Antigen-Specific T Cell Subsets

During recent symptomatic toxoplasmosis, alterations in quantity and function of mononuclear cellsin peripheral blood were observed. Flow cytofluorometric analysis and differential leukocyte counts revealed increasedabsolute numbers of T8 + cells, Leu 7 + (natural killer/killer) cells, and monocytes. T4+ cells and HLA-DR+ cells were not significantly changed. T4/T8 cell ratios were reversed in symptomatic toxoplasmosis (0.7 ± 0.3) and normal in chronic infection (1.7 ± 0.5). Toxoplasma antigen induced higher numbers of T8 + and TQ1 + cells in four T cell lines from two individuals with symptomatic infection than in five T cell lines from three individuals with asymptomatic infection. Eight cloned T cell lines produced γ interferon in an antigen-specific fashion and in higher amounts when they originated from an asymptomatic subject than from a symptomatic subject. These results indicate that marked alterations in properties of immunoregulatory cells are characteristic of recent symptomatic toxoplasmosis. The transient immune dysfunction may be a major part of the observed disease and/or a feature of successful parasitis

The Role of Percent Volume buried in the Characterization of Copper(I) Complexes for Lighting Purposes

The usefulness of percent volume buried (%Vbur) as a readily quantifiable property is investigated with regard to [Cu(NN)(PP)]+ complexes of interest for lighting purposes. Photoluminescence quantum yields (PLQYs) and single crystal X-ray structures of 100 reported compounds were assembled, %Vbur of the ligand systems were calculated and analyzed for correlations. We found that increased shielding of the central Cu(I) cation relying on shared contributions of both (NN) and (PP) ligand systems led to increased PLQYs. These findings are of relevance for future characterizations of Cu(I)-based complexes and their photophysical behavior in the solid-stat

Rates and patterns of great ape retrotransposition

Cataloged from PDF version of article.We analyzed 83 fully sequenced great ape genomes for mobile element insertions, predicting a total of 49,452 fixed and polymorphic Alu and long interspersed element 1 (L1) insertions not present in the human reference assembly and assigning each retrotransposition event to a different time point during great ape evolution. We used these homoplasy-free markers to construct a mobile element insertions-based phylogeny of humans and great apes and demonstrate their differential power to discern ape subspecies and populations. Within this context, we find a good correlation between L1 diversity and single-nucleotide polymorphism heterozygosity (r(2) = 0.65) in contrast to Alu repeats, which show little correlation (r(2) = 0.07). We estimate that the "rate" of Alu retrotransposition has differed by a factor of 15-fold in these lineages. Humans, chimpanzees, and bonobos show the highest rates of Alu accumulation-the latter two since divergence 1.5 Mya. The L1 insertion rate, in contrast, has remained relatively constant, with rates differing by less than a factor of three. We conclude that Alu retrotransposition has been the most variable form of genetic variation during recent human-great ape evolution, with increases and decreases occurring over very short periods of evolutionary time

A Quantum Otto Engine with Shortcuts to Thermalization and Adiabaticity

We investigate the energetic advantage of accelerating a quantum harmonic oscillator Otto engine by use of shortcuts to adiabaticity (for the power and compression strokes) and to equilibrium (for the hot isochore), by means of counter-diabatic (CD) driving. By comparing various protocols with and without CD driving, we find that, applying both type of shortcuts leads to enhanced power and efficiency even after the driving costs are taken into account. The hybrid protocol not only retains its advantage in the limit cycle, but also recovers engine functionality (i.e., a positive power output) in parameter regimes where an uncontrolled, finite-time Otto cycle fails. We show that controlling three strokes of the cycle leads to an overall improvement of the performance metrics compared with controlling only the two adiabatic strokes. Moreover, we numerically calculate the limit cycle behavior of the engine and show that the engines with accelerated isochoric and adiabatic strokes display a superior power output in this mode of operation.Comment: 12 pages, 7 figure

mrsFAST-Ultra: a compact, SNP-aware mapper for high performance sequencing applications

Cataloged from PDF version of article.High throughput sequencing (HTS) platforms generate unprecedented amounts of data that introduce challenges for processing and downstream analysis. While tools that report the 'best' mapping location of each read provide a fast way to process HTS data, they are not suitable for many types of downstream analysis such as structural variation detection, where it is important to report multiple mapping loci for each read. For this purpose we introduce mrsFAST-Ultra, a fast, cache oblivious, SNP-aware aligner that can handle the multi-mapping of HTS reads very efficiently. mrsFAST-Ultra improves mrsFAST, our first cache oblivious read aligner capable of handling multi-mapping reads, through new and compact index structures that reduce not only the overall memory usage but also the number of CPU operations per alignment. In fact the size of the index generated by mrsFAST-Ultra is 10 times smaller than that of mrsFAST. As importantly, mrsFAST-Ultra introduces new features such as being able to (i) obtain the best mapping loci for each read, and (ii) return all reads that have at most n mapping loci (within an error threshold), together with these loci, for any user specified n. Furthermore, mrsFAST-Ultra is SNP-aware, i.e. it can map reads to reference genome while discounting the mismatches that occur at common SNP locations provided by db-SNP; this significantly increases the number of reads that can be mapped to the reference genome. Notice that all of the above features are implemented within the index structure and are not simple post-processing steps and thus are performed highly efficiently. Finally, mrsFAST-Ultra utilizes multiple available cores and processors and can be tuned for various memory settings. Our results show that mrsFAST-Ultra is roughly five times faster than its predecessor mrsFAST. In comparison to newly enhanced popular tools such as Bowtie2, it is more sensitive (it can report 10 times or more mappings per read) and much faster (six times or more) in the multi-mapping mode. Furthermore, mrsFAST-Ultra has an index size of 2GB for the entire human reference genome, which is roughly half of that of Bowtie2. mrsFAST-Ultra is open source and it can be accessed at http://mrsfast.sourceforge.net

Extended π-Systems in Diimine Ligands in [Cu(P^P)(N^N)][PF6] Complexes: From 2,2'-Bipyridine to 2-(Pyridin-2-yl)Quinoline

We describe the synthesis and characterization of [Cu(POP)( 1 )][PF6], [Cu(POP)( 2 )][PF6], [Cu(xantphos)( 1 )][PF6], and [Cu(xantphos)( 2 )][PF6] in which ligands 1 and 2 are 2-(pyridin-2-yl)quinoline and 2-(6-methylpyridin-2-yl)quinoline, respectively. With 2,2'-bipyridine (bpy) as a benchmark, we assess the impact of the extended π-system on structural and solid-state photophysical properties. The single crystal structures of [Cu(POP)( 2 )][PF6], [Cu(xantphos)( 1 )][PF6], and [Cu(xantphos)( 2 )][PF6] were determined and confirmed a distorted tetrahedral copper(I) coordination environment in each [Cu(P^P)(N^N)]+ cation. The xanthene unit in [Cu(xantphos)( 1 )][PF6] and [Cu(xantphos)( 2 )][PF6] hosts the quinoline unit of 1 , and the 6-methylpyridine group of 2 . 1H NMR spectroscopic data indicate that these different ligand orientations are also observed in acetone solution. In their crystal structures, the [Cu(POP)( 2 )]+, [Cu(xantphos)( 1 )]+, and [Cu(xantphos)( 2 )]+ cations exhibit different edge-to-face and face-to-face π-interactions, but in all cases, the copper(I) centre is effectively protected by a ligand sheath. In [Cu(POP)( 2 )][PF6], pairs of cations engage in an efficient face-to-face -stacking embrace, and we suggest that this may contribute to this compound having the highest photoluminescence quantum yield (PLQY = 21%) of the series. With reference to data from the Cambridge Structural Database, we compare packing effects and PLQY data for the complexes incorporating 2-(pyridin-2-yl)quinoline and 2-(6-methylpyridin-2-yl)quinoline, with those of the benchmark bpy-containing compounds. We also assess the effect that Cu⋯O distances in the {Cu(POP)} and {Cu(xantphos)} domains of [Cu(P^P)(N^N)][X] compounds have on solid-state PLQY values

Geleneksel Diplomasiden Kamu Diplomasisine Karabağ Savaşının Televizyon Üzerinden Sunumuna İlişkin Bir Araştırma

Kitle iletişim araçlarının sahip olduğu nüfuz edici güç sayesinde kaynak ile hedef kitle arasındaki mesafe silinmiş ve geniş kitlelere ulaşmak kolaylaşmıştır. Diğer yandan kitle iletişim araçlarının sunduğu olanaklar doğrultusunda öteki pek çok şeyin yanı sıra kamu diplomasisi faaliyetleri yoğunluk kazanmıştır. Bu çerçevede Türkiye’nin siyasi sınırları dışında kalan ancak Türkçe konuşan topluluklara yönelik televizyon yayınları yapmak ve kamu diplomasisi faaliyetleri yürütmek maksadıyla 21 Mart 2009 tarihinde TRT Avaz televizyon kanalı kurulmuştur. Çalışma kapsamında TRT Avaz televizyon kanalından yayınlanan Avrasya Gündemi adlı haber programı araştırma evreni olarak belirlenmiş ve Azerbaycan ile Ermenistan arasında yaşanan Karabağ Savaşı (27 Eylül-10 Kasım 2020) esnasında yayınlanan program içerikleri araştırma örneklemi olarak incelenmiştir. Buna göre; haber, yorum ve uzman görüşlerinden oluşan toplam kırk dört program içeriğinde Azerbaycan’a yönelik olumlayıcı ifadeler ile Ermenistan’a yönelik eleştirel ifadeler süzülmüş ve kamu diplomasisi perspektifinden söylem analizine tabii tutulmuştur. Çalışma neticesinde araştırma örneklemi olarak incelenen içeriklerin genel manada Türkiye ile Azerbaycan devletleri arasındaki dış politik söylemle uyumlu, Ermenistan devletinin söylemlerine karşı ise çeşitli argümanlarla desteklenen eleştirel unsurlar içerdiği sonucuna varılmıştır