1,814 research outputs found
Information criteria for impulse response function matching estimation of DSGE models
No full textWe propose a new information criterion for impulse response function matching estimators of the structural parameters of macroeconomic models. The main advantage of our procedure is that it allows the researcher to select the impulse responses that are most informative about the deep parameters, therefore reducing the bias and improving the efficiency of the estimates of the model’s parameters. We show that our method substantially changes key parameter estimates of representative dynamic stochastic general equilibrium models, thus reconciling their empirical results with the existing literature. Our criterion is general enough to apply to impulse responses estimated by vector autoregressions, local projections, and simulation methods.
At war with their bodies or at war with their minds? A glimpse into the lives and minds of female yo-yo dieters - the curtain has lifted in the UK
No full textYo-yo dieting is a common phenomenon yet little interdisciplinary research has been carried out on dieting, food and nutrition in the social context. This study investigated the effects of yo-yo dieting on social and psychological well-being using qualitative methods. Data were collected by conducting semi-structured interviews with women who yo-yo diet. A total of 9 participants, 20-51 years old, were recruited by purposive and snowball sampling techniques from the University of Roehampton, London, U.K., where the first author was a student at the time of the study. Thematic analysis derived four major themes: the physical and/or mental impact of yo-yo dieting, the similarity of reported symptoms with those associated with eating disorders, familial and sociocultural pressure for initiating diets and the struggle for control and/or identity. Furthermore, there appears to be a link between yo-yo dieting and interviewees’ references to depressive mood episodes. The implications of these findings for the risks of developing eating disorders are discussed
Position sensitive, continuous wavelength tunable laser based on photopolymerizable cholesteric liquid crystals with an in-plane helix alignment
No full textThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Hiroyuki Yoshidaa, Yo Inoue, Takuya Isomura, Yuko Matsuhisa, Akihiko Fujii, and Masanori Ozaki, Appl. Phys. Lett. 94, 093306 (2009) and may be found at https://doi.org/10.1063/1.3089846.Position sensitive lasing with continuous wavelength tunability and emission in the cell-plane direction is demonstrated from a photopolymerized cholesteric liquid crystal film. The device has a gradually dilating helix lying in the cell-plane direction and is fabricated by applying a vertical electric field in a conventionally rubbed wedge cell while cooling the sample from the isotropic phase. Tuning range of ~ 100 nm is achieved by translating the device with respect to the pump beam. Photopolymerizable materials are especially useful in this configuration since a freestanding film, not requiring any external voltage to maintain the molecular ordering, can be prepared
センジョウ クッキョクセイ コウブンシ ノ ダイ2 オヨビ ダイ3 ビリアル ケイスウ
No full textYo Nakamura, Takashi Norisuye, and Akio Teramoto. Macromolecules 24 (17), 4904-4908. August 1, 1991. © 1991 American Chemical Society. https://doi.org/10.1021/ma00017a029.Yo Nakamura, Kazutomo Akasaka, Kenichi Katayama, Takashi Norisuye, and Akio Teramoto. Macromolecules 25 (3), 1134-1138. February 1, 1992. © 1992 American Chemical Society. https://doi.org/10.1021/ma00029a020.Norisuye, T., & Nakamura, Y. (1993). Remarks on smoothed-density theories for flexible chains with three-segment interactions. In Polymer (Vol. 34, Issue 7, pp. 1440–1443). Elsevier BV. https://doi.org/10.1016/0032-3861(93)90858-8.Yo Nakamura, Norisuke Inoue, Takashi Norisuye, and Akio Teramoto. Macromolecules 30 (3), 631-636. February 10, 1997. © 1997 American Chemical Society. https://doi.org/10.1021/ma961222d
SECOND AND THIRD VIRIAL COEFFICIENTS FOR LINEAR FLEXIBLE POLYMERS
No full textYo Nakamura, Takashi Norisuye, and Akio Teramoto. Macromolecules 24 (17), 4904-4908. August 1, 1991. © 1991 American Chemical Society. https://doi.org/10.1021/ma00017a029.Yo Nakamura, Kazutomo Akasaka, Kenichi Katayama, Takashi Norisuye, and Akio Teramoto. Macromolecules 25 (3), 1134-1138. February 1, 1992. © 1992 American Chemical Society. https://doi.org/10.1021/ma00029a020.Norisuye, T., & Nakamura, Y. (1993). Remarks on smoothed-density theories for flexible chains with three-segment interactions. In Polymer (Vol. 34, Issue 7, pp. 1440–1443). Elsevier BV. https://doi.org/10.1016/0032-3861(93)90858-8.Yo Nakamura, Norisuke Inoue, Takashi Norisuye, and Akio Teramoto. Macromolecules 30 (3), 631-636. February 10, 1997. © 1997 American Chemical Society. https://doi.org/10.1021/ma961222d
Threshold improvement in uniformly lying helix cholesteric liquid crystal laser using auxiliary π-conjugated polymer active layer
No full textThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Hiroyuki Yoshida, Yusuke Shiozaki, Yo Inoue, Masaya Takahashi, Yasuhiro Ogawa, Akihiko Fujii, and Masanori Ozaki, Journal of Applied Physics 113, 203105 (2013) and may be found at https://doi.org/10.1063/1.4807402.We propose a device structure to lower the lasing threshold of a uniformly lying helix cholesteric liquid crystal (ChLC) laser. We place a p-conjugated polymer active layer beneath the ChLC layer to provide auxiliary gain, and demonstrate an improvement in the lasing threshold by a factor of 2.3. We also perform finite difference time domain calculations coupled with rate equations for a four-level system, and clarify the effect of the additional active layer on both the photonic density of states and the inversion population density. Although the addition of an extra layer lowers the photonic density of states, the gain provided by the auxiliary layer is sufficient to overcome the losses and decrease the lasing threshold. Our concept is useful for obtaining high-performance ChLC lasers
Platero y yo: La visión juanramoniana de la fauna en la literatura animalística española
No full textThis work analyzes the fauna of Platero y yo and other texts by Juan Ramón Jiménez from the perspective of Animal Studies, a critical paradigm of interdisciplinary nature that has been scarcely explored within Hispanic philology. This paper examines the poet's animal world, taking into account current social issues and matters of utmost concern for animal rights and environmentalist sectors, such as the representation of animal abuse in Platero y yo and in other prose works by the author, the affectionate anthropomorphism of Platero, his role as a pet, Jiménez clear descriptions of animal behavior and his judgments on hunting, bullfighting, bird trapping and other practices that cause harm to animals. Lastly, the importance of Platero y yo for Spanish animal literature is emphasized, in connection with the development of protectionist and conservationist movements, highlighting the need to search for more works with animal rights content in the literary production of the 19th and 20th centuries.Este trabajo analiza la fauna de Platero y yo y de otras prosas de Juan Ramón Jiménez desde la perspectiva de los estudios de animales, un paradigma crítico de carácter interdisciplinar poco explorado en la filología hispánica. El artículo examina el mundo animal del poeta teniendo en cuenta cuestiones sociales vigentes y de máxima preocupación para los sectores animalista y ecologista, como la representación del abuso animal en Platero y yo y en otros textos del autor, el antropomorfismo afectuoso de Platero, su consideración como mascota, las nítidas descripciones de la conducta animal por parte de Jiménez y sus juicios sobre la caza, la tauromaquia, el silvestrismo y otras prácticas que causan dolor a los animales. Se valora, por último, la importancia de Platero y yo para la literatura animalística española, en conexión con el desarrollo de los movimientos proteccionista y conservacionista, y es destacada la necesidad de buscar más obras con contenido animalista en la producción literaria de los siglos XIX y XX
Detecting Yo-Yo DoS attack in acontainer-based environment
No full textDenial-of-Service (DoS) attacks are an ever persistent treath to IT environ-ments and it occurs today at an ever-increasing rate from year to year. Asthe world develops and companies migrate their systems from private loc-ations to public clouds, cyber criminals continue to use their classic DoSmethods on cloud networks. Some clever cyber criminals also come upwith new ways of rendering services unavailable for the intended users byexploring vulnerabilities in novel technologies such as clouds are. Still, typ-ical attacks such as SYN floods and amplification attacks are the most popu-lar attack vectors. There have been a big number of research on these classicDoS approaches, but security firms that operate DoS mitigation solutionscontinue to observe new trends in the DoS environment. More novel trendsdiffers from the classic attacks by utilizing multiple attack vectors at thesame time, hoarding big botnets and low-and-slow attacks among other. Anovel DoS attack is the Yo-Yo attack which sends bursts of traffic in orderto exploit cloud provider’s auto-scaling functionalities. Auto-scaling is avery important line of defense against DoS attacks, but the Yo-Yo attack isspecialized at exploiting a mechanism that we first thought only as an ad-vantage that now could be a concern for cloud providers. The Yo-Yo attackis able to impact the victims web server with performance degradation aswell as economic loss. This research will try to contribute with a detectionmechanism against the Yo-Yo attack, as well as doing so in a container-based environment. This research has not been conducted earlier with acontainer-based environment as far as the author can tell, and it is highlyrelevant for the time being as more and more users are choosing contain-ers for their web services, due to their lightweight being. The hypothesisis that (a) the Yo-Yo attack will not be able to determine the scaling phaseor scaling policy due to rapid deployment of container instances or (b) thatthe Yo-Yo attack will induct rapid scaling of container instances and causefurther economic loss than previously
Detecting Yo-Yo DoS attack in acontainer-based environment
No full textDenial-of-Service (DoS) attacks are an ever persistent treath to IT environ-ments and it occurs today at an ever-increasing rate from year to year. Asthe world develops and companies migrate their systems from private loc-ations to public clouds, cyber criminals continue to use their classic DoSmethods on cloud networks. Some clever cyber criminals also come upwith new ways of rendering services unavailable for the intended users byexploring vulnerabilities in novel technologies such as clouds are. Still, typ-ical attacks such as SYN floods and amplification attacks are the most popu-lar attack vectors. There have been a big number of research on these classicDoS approaches, but security firms that operate DoS mitigation solutionscontinue to observe new trends in the DoS environment. More novel trendsdiffers from the classic attacks by utilizing multiple attack vectors at thesame time, hoarding big botnets and low-and-slow attacks among other. Anovel DoS attack is the Yo-Yo attack which sends bursts of traffic in orderto exploit cloud provider’s auto-scaling functionalities. Auto-scaling is avery important line of defense against DoS attacks, but the Yo-Yo attack isspecialized at exploiting a mechanism that we first thought only as an ad-vantage that now could be a concern for cloud providers. The Yo-Yo attackis able to impact the victims web server with performance degradation aswell as economic loss. This research will try to contribute with a detectionmechanism against the Yo-Yo attack, as well as doing so in a container-based environment. This research has not been conducted earlier with acontainer-based environment as far as the author can tell, and it is highlyrelevant for the time being as more and more users are choosing contain-ers for their web services, due to their lightweight being. The hypothesisis that (a) the Yo-Yo attack will not be able to determine the scaling phaseor scaling policy due to rapid deployment of container instances or (b) thatthe Yo-Yo attack will induct rapid scaling of container instances and causefurther economic loss than previously.publishedVersio
Juana de Vega desde la literatura del yo
No full textThis paper focuses on the study by Juana de Vega, second generation of romanticism author, of two pieces of her work in the area of literature of the self, En honor de Mina (Memorias íntimas, 1805-1834) y Apuntes sobre la historia. Del tiempo que ocupé los destinos de Aya de S. M. y A. Camarera mayor de Palacio. For that purpose, links are established between both writings, with the egocentric spirit of philosophy and aesthetics of Romanticism. Likewise, both writings are analyzed from this literary genre, assigning En honor de Mina to autobiography, and Apuntes sobre la historia to memoirs.Este trabajo tiene por objeto el estudio de dos textos de Juana de Vega, autora de la segunda generación romántica, En honor de Mina (Memorias íntimas, 1805-1834) y Apuntes sobre la historia. Del tiempo que ocupé los destinos de Aya de S. M. y Camarera mayor de Palacio en el ámbito del género de la literatura del yo. Para ello se establecen relaciones entre ambos escritos con el espíritu egocéntrico de la filosofía y estética del Romanticismo, exaltadoras de la individualidad. Asimismo, se analizan las dos obras de la escritora coruñesa a la luz de la metodología propia del mencionado género literario, adscribiendo En honor de Mina a la autobiografía y Apuntes sobre la historia a las memorias
- …
