New approach to morphometric analysis of Huschke’s foramen

Background: Aim of the present study is to analyze the demographic and anatomical details of the Huschke’s foramen (HF) which are not previously studied and to present a new clinical perspective. Materials and methods: MDCT (Multidedector Computed Tomography) images of 495 patients obtained were retrospectively evaluated. Presence of a HF, its’ size, relations of it with side, age and gender were noted for every patient. Size of the foramen was measured in the axial plane, as well as on the reconstructed coronal and sagittal planes. Results: Of the 495 patients 99 (20%) had HF. There was no significant difference between females and males according to the presence of the HF and the side of the HF. When the dimension of the left- and the right-sided HFs were compared, there were no significant differences on none of the axes for the patients with unilateral or bilateral HF. There was no significant linear correlation between age and the dimension on axial axis, the dimension on the sagittal axis and the dimension on the coronal axis Conclusions: The present work presenting morphologic and statistical variables of HF provides a data for further studies which will indicate risk factor of herniation through HF. By the aid of MDCT which is sensitive for detection of the HF because of its thin sections, high spatial resolution, and multiplanar capabilities, lesions which were previously diagnosed as dehiscence were found to be defects

Critical behavior of density of states near Fermi energy in low-dimensional disordered metals

We study the effect of electron-electron interaction on the one-particle density of states (\emph{DOS}) $\rho^{(d)}(\epsilon,T)$ of low-dimensional disordered metals near Fermi energy within the framework of the finite temperature conventional impurity diagram technique. We consider only diffusive limit and by a geometric re-summation of the most singular first order self-energy corrections via the Dyson equation we obtain a non-divergent solution for the \emph{DOS} at low energies, while for higher energies the well-known Altshuler-Aronov corrections are recovered. At the Fermi level $\rho^{(d)}(\epsilon,T=0)\to 0$, this indicates that interacting disordered two- and quasi-one-dimensional systems are in insulating state at zero temperature. The obtained results are in good agreement with recent tunneling experiments on two-dimensional GaAs/AlGaAs heterostructures and quasi-one-dimensional doped multiwall carbon nanotubes.Comment: 8 pages, 4 figure

Performative Work: Bridging Performativity and Institutional Theory in the Responsible Investment Field

Callon’s performativity thesis has illuminated how economic theories and calculative devices shape markets, but has been challenged for its neglect of the organizational, institutional and political context. Our seven-year qualitative study of a large financial data company found that the company’s initial attempt to change the responsible investment field through a performative approach failed because of the constraints posed by field practices and organizational norms on the design of the calculative device. However, the company was subsequently able to put in place another form of performativity by attending to the normative and regulative associations of the device. We theorize this route to performativity by proposing the concept of performative work, which designates the necessary institutional work to enable translation and the subsequent adoption of the device. We conclude by considering the implications of performative work for the performativity and the institutional work literatures

Surveying the spirit of absolute summability on multilinear operators and homogeneous polynomials

[EN] We draw a fundamental compendium of the most valuable results of the theory of summing linear operators and detail those that are not shared by known multilinear and polynomial extensions of absolutely summing linear operators. The lack of such results in the theory of non-linear summing operators justifies the introduction of a class of polynomials and multilinear operators that satisfies at once all related non-linear results. Surprisingly enough, this class, defined by means of a summing inequality, happens to be the well known ideal of composition with a summing operator.D. Pellegrino acknowledges with thanks the support of CNPq Grant 401735/2013-3-PVE (Linha 2)-Brazil. P. Rueda acknowledges with thanks the support of the Ministerio de Economia y Competitividad (Spain) MTM2011-22417. E. A. Sanchez Perez acknowledges with thanks the support of the Ministerio de Economia y Competitividad (Spain) MTM2012-36740-C02-02.Pellegrino, D.; Rueda, P.; Sánchez Pérez, EA. (2016). Surveying the spirit of absolute summability on multilinear operators and homogeneous polynomials. Revista de la Real Academia de Ciencias Exactas Físicas y Naturales Serie A Matemáticas. 110(1):285-302. https://doi.org/10.1007/s13398-015-0224-8S2853021101Achour, D., Dahia, E., Rueda, P., Sánchez-Pérez, E.A.: Factorization of absolutely continuous polynomials. J. Math. Anal. Appl. 405(1), 259–270 (2013)Albiac, F., Kalton, N.: Topics in Banac Space Theory. Springer, Berlin (2005)Alencar, R., Matos, M.C.: Some classes of multilinear mappings between Banach spaces, Publicaciones del Departamento de Análisis Matemático 12, Universidad Complutense Madrid (1989)Bombal, F., Pérez-García, D., Villanueva, I.: Multilinear extensions of Grothendieck’s theorem. Q. J. Math. 55(4), 441–450 (2004)Botelho, G., Braunss, H.-A., Junek, H., Pellegrino, D.: Holomorphy types and ideals of multilinear mappings. 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Cosmology with the Laser Interferometer Space Antenna

The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravitational-wave backgrounds and their implications for early universe and particle physics, from the MeV to the Planck scale. However, the range of potential cosmological applications of gravitational wave observations extends well beyond these two objectives. This publication presents a summary of the state of the art in LISA cosmology, theory and methods, and identifies new opportunities to use gravitational wave observations by LISA to probe the universe

Oxidation Behavior of AlTiN/TiN Nanolayer Hard Coating at High Temperatures

Hard machining and high speed cutting are challenging machining processes demanded for high productivity for several decades. Hard coatings are mostly used for protection of the tool materials from severe tribological conditions in which excessive cutting temperatures and forces take place during these processes. Oxidation resistance is an important property of the hard coatings in hard machining operations due to high temperatures up to 1000C at the cutting edge. Improvement of oxidation resistance provides longer tool life at dry cutting conditions. TiAlN-based coatings are known to have high oxidation resistance. In this paper, nanolayer AlTiN/TiN coating was deposited on cemented carbide substrates by industrial magnetron sputtering system. The need to understand the effect of nanolayered structure on the oxidation behavior of protective coatings in machining industry in terms of high temperature oxidation tests is the motivation of this investigation. The deposited coating was annealed at 1000C with different durations. Before and after the oxidation tests, the composition, structure and phases of the coating were determined by scanning electron microscopy in combination with energy-dispersive X-ray spectroscopy and X-ray diffraction, respectively. It was found that nanolayered structure improves oxidation resistance, and thereby, it provides longer tool life

Türk basınında promosyon açmazı

Bu çalışmamda, basında promosyonun ortaya çıkış sebeplerini, gelişimini, yarar ve zararlarını ilgili görüşlerden de faydalanarak anlatmaya çalıştım. Çalışmada gazetelerin varoluş mücadelesinde tirajın önemi vurgulanarak çıkar pastasından yeme kavgasında verilen mücadele de anlatılmıştır. Basında promosyonun gelişim evreleri tarih süzgeci içinde ele alınmış, 1960'dan günümüze değin yaşanan gelişmelere yer verilmiştir. Askeri darbelerle sarsılan, ekonomik krizlerle zorluklar yaşayan basının hedeflediği tiraja ulaşmak için mûbah saydığı promosyona nasıl dört elle sarıldığı anlatılmaya çalışılmıştır. Bu arada, çıkar pastasından yeme yarışında basının içine düştüğü çirkinliklere değinilmiş, promosyonun çılgın seviyelere ulaştığı 1990'lı yıllar 1995'e kadar incelenmiştir. Promosyonun gazetecilik etiği açısından ortaya çıkardığı yanlışlıklara yer verilen çalışmada, hediye kampanyalarının kime yarar, kime zarar getirdiği verilerle açıklanmaya çalışılmıştır. Günümüz toplumunda promosyon kültürüyle "kültürel kirlenme" yaşandığının belirtildiği çalışmada, gerçek okurun yerini hediye alıcılarının aldığına dikkat çekilmiştir. Promosyon kampanyalarıyla şekillendirilen basının saygınlığını da azaldığı belirtilerek, günümüzde tekelleşen medyanın "gazeteci"den çok "satıcı"ya itibar ettiği ifade edilmiştir. Kupon okurlarının promosyon yoluyla daima tüketiciliğe yönlendirildiğine işaret edilen çalışmada, promosyonun, ancak gazete patronlarına ticari yarar sağlayabildiği belirtilmiştir. Çalışmada ayrıca, gazete sahipleri, gazeteciler, akademisyenler ve okurların görüşlerine de yer verilmiştir. Promosyonla ilgili kişilerin çoğunun buna karşı olmalarına rağmen maddi çıkar dolayısıyla uyguladıkları, kendi ifadeleriyle çalışmada anlatılmaktadır. Promosyondan çıkış yolunun ancak bütün medya kuruluşlarının alacakları ciddi ve vazgeçilmez kararlar bağlamında gerçekleşebileceğine dikkat çekilmiştir. SUMMARY I wanted to explain the reasons of promotion appearance in press; its development; advantages and a varages with the help of interested view in this working. The development stages of promotion in press are reecived in the history filter, are placed to the development from 1960 till today. The work of clasp to the promotion of press was explained in order to reach circulation of newspapers through the difficulty of economical crisis. Therefore the arrival promotional 1990 years coming out through the uglier levels of promotion of press are studied till 1995 year. The present campaigns of promotion are presented with its datums of; weather they brought the benefits oc damages. The attention was called to the population that, how real readers were replaced by present customers, ıt was expressed hour media reputated to the salesman instead of reporters, ıt was appeared that the promotion provided the trading, benetits for the newspapers' patrons. There were replaced the ideas of newspaper reporters'; journalists'; academics' and readers. Although the protest of the men interested of promotion; therefore applicated for their benefit. The way out of promotion would be realized of the whole media concerns' desicions were called one's attention

Thermo-ecological analysis of industrial kilns

PubMed ID: 30999264In this study, thermo-ecological analysis has been applied by using ecologic objective function “ECO” and ecological coefficient of performance “ECOP” to the kilns used in the firing process of the ceramic plant. Five different environmental (dead state) temperatures (between 10 °C and 30 °C) are taken into account. The irreversibility, which are the most important criteria affecting ecological performance, occurs during the heat transfer in the burners and cooling in the kiln. The irreversibility and product exergy values are compared under different environmental temperatures. The ECO and ECOP values are inversely proportional to the environment temperatures. The maximum ECO and ECOP values are determined as ?2387.156 kW and 0.051, respectively, while their corresponding minimum values are ?2577.394 kW and 0.026, respectively. The results obtained can be a guide for the thermo-ecological design of industrial kilns. The losses of the kiln are high. It is necessary to reduce the losses to increase the performance and ecologic indicator results. The kilns are not environmentally benign at higher ambient temperatures. The optimum working condition of the kiln can be considered as 10 °C. Better insulations are necessary for the side, bottom and top surfaces of the kilns to reduce the losses. In this regard, the waste heat recovery for the gases can be taken into account for better efficiency and environmental assessment. © 2019 Elsevier Lt