673 research outputs found
Learning Complex Policy Distribution with CEM Guided Adversarial Hypernetwork
No full textCross-Entropy Method (CEM) is a gradient-free direct policy search method, which has greater stability and is insensitive to hyperparameter tuning. CEM bears similarity to population-based evolutionary methods, but, rather than using a population it uses a distribution over candidate solutions (policies in our case). Usually, a natural exponential family distribution such as multivariate Gaussian is used to parameterize the policy distribution. Using a multivariate Gaussian limits the quality of CEM policies as the search becomes confined to a less representative subspace. We address this drawback by using an adversarially-trained hypernetwork, enabling a richer and complex representation of the policy distribution. To achieve better training stability and faster convergence, we use a multivariate Gaussian CEM policy to guide our adversarial training process. Experiments demonstrate that our approach outperforms state-of-the-art CEM-based methods by 15.8% in terms of rewards while achieving faster convergence. Results also show that our approach is less sensitive to hyper-parameters than other deep-RL methods such as REINFORCE, DDPG and DQN.Interactive Intelligenc
Sur les transformations conformes de la sphère admettant une connexion invariante
No full textRésuméLe but de cet article est de démontrer qu'une transformation conforme d'une sphère standarde non-parallelisable admet une connexion invariante si et seulement si elle admet une métrique riemannienne invariante. Pour une sphère standarde de dimension paire cela entraîne que l'ensemble des transformation conformes n'admettant aucune connexion invariante contient une partie ouverte et dense du groupe des transformation conformes
"Kitâb-ı Cem Sultân" and Southwestern Europe
No full textAnonim bir eser olan “Kitâb-ı Cem Sultân” Cem Sultan’ın hayatı, Osmanlı ve Batı arasındaki siyasal ve diplomatik ilişkiler ve yazann seyahati esnasında gördüğü yerlerdeki bazı ilginç gelenekler ile ilgili bilgiler ihtiva eder. Dolayısı ile bu eser Avrupa ile Osmanlı arasındaki diplomatik, siyasi ve kültürel ilişkiler bakımından önemlidir. Eserin bahsi geçen yönlerine bağlı olarak bu çalışmada Kâfir imajı, bölge insanının kültürü, gelenekleri ve iki kültürün karşılıklı bakış açılan İncelenmektedir.“Kitâb-ı Cem Sultân” is an anonymous book, contains information about Cem Sultan’s life and politic\diplomatic relations betvveen Ottoman and the Westem Europe. A part from these it has data of culture and tradition of regions which was seen by author. Indirectly it is important from cultural and politics relation point of view. According to these ways of text, in this study, infidel image in the Turkish people and their interesting against Europe culture and Christian faith were examined
Recommended from our members
Coilgun Structures
No full textResearch on coilguns at the Center for Electromechanics at the University of Texas at Austin (CEM-UT) has yielded considerable insight into the optimal design of coilgun structures. This research has indicated that the structural requirements are strong functions of launcher classification as well as acceleration mode. As a result, CEM-UT has built and tested the DC coaxial accelerator (DCA) coilgun, which is a multistage pulsed induction launcher that makes extensive use of composite material technology. The author presents analytical techniques (closed-form and numerical) used to make structural design calculations in the DCA launcher. The evolution of the multiturn wound DCA armature design is discussed. In addition, measured plastic deformation of this armature after a high-energy experiment is compared to that predicted by finite element analysisCenter for Electromechanic
The unlucky life story of Cem Sultan in Câm-ı Cem-âyîn and his new poems
No full textBu çalıĢmada, Bayatî‟nin Câm-ı Cem-âyîn adlı eserindeki Cem Sultan‟a
ait hasb-i hâl türü Ģiirler üzerinde durulmuĢtur. ÇalıĢmanın amacı eserden
yola çıkarak Ģairin hayatı, kiĢiliği, Ģiirleri ve dönemi hakkında bilinmeyenleri
ortaya koymaktır. ÇalıĢma, ġehzâde Cem (ö. 900/1495) ve Hasan Bayatî (ö.
900/1495‟te sağ) arasında Kâbe‟de Ģiirle baĢlayan dostluğu; Câm-ı Cem-âyîn
adlı eserin yazılıĢ sebebi, konusu, önemi ve neĢrini içermektedir. Bu
çalıĢmayla, Cem‟in Türkçe divanında yer almayan iki Ģiiri incelenmiĢ olup
hem bu Ģiirlerden hem de Ali Emîrî‟nin tespitlerinden yola çıkılarak Cem
Sultan‟a dair yeni bilgilere ulaĢılmıĢtır. Türk-Osmanlı neslinin öz tarihçesi
olan Câm-ı Cem-âyîn, Bayatî ve özellikle Cem Sultan‟ın hayat ve kiĢiliğine
dair önemli bilgiler içermesi bakımından oldukça önemli bir eserdir. ÇalıĢma
giriĢ, iki bölüm, sonuç ve kaynakçadan oluĢmaktadır. GiriĢ bölümünde, Câmı Cem-âyîn‟i eski harflerle neĢreden Ali Emîrî‟nin ön sözü ve eserin
dîbâcesindeki bilgiden hareketle eser ve müellifi hakkında bilgi verilmiĢ,
sonra adı geçen eserin Ģekil, içerik ve yayın bilgisi üzerinde durulmuĢtur.
Birinci bölümde, iki farklı eserden Cem‟in hayatına dair yeni bilgiler
aktarılmıĢ, Bayatî‟nin Farsça bir gazeli ve bu gazele Cem Sultan tarafından
yazılan Türkçe bir nazire gazel incelenmiĢtir. Ġkinci bölümde, Câm-ı Cemâyîn‟in hatime bölümünde yer alan ve çalıĢmamıza konu olan tarihî bir
“tahmisnâme” Ģekil, içerik, dil ve anlatım özellikleri yönünden incelenmiĢtir.
Hasb-i hâl türündeki bu önemli manzumenin tam metni, dil içi çevirisi ve
notlarla birlikte verildikten sonra sonuç ve kaynakça yazımıyla çalıĢma
tamamlanmıĢtır.This study focuses on Cem Sultan‟s poems written in the tone of friendly
chat included in the book Câm-ı Cem-âyîn by Bayatî. The study aims to
reveal what is unknown about the poet‟s life, personality, poems and his era.
This study is concerned with friendship between Prince Cem (date of death
900/1495) and Hasan Bayatî (date of death 900/1495 in life) which started in
Kaaba, the reason why the book “Câm-ı Cem-âyîn” was written, its
importance and publication. This current study analyses two poems of Cem
Sultan which are not included in his Turkish Collection of Poems, and makes
explorations about Cem Sultan by setting out from these two poems and from
the findings obtained by Ali Emîrî. Câm-ı Cem-âyîn, a short history of Ottoman Turks lineage, is a very important work in that it includes
information on Bayatî‟s and especially Cem Sultan‟s life and personality.
The study consists of introduction, two chapters, conclusion and a chapter
about bibliography. In the introduction part the preface written by Ali Emîrî,
information about the work based on the preface, and about the author is
presented and then information on the form, content and publication of the
book is offered. In Chapter One information about Cem Sultan‟s life is given
based on two different studies, and a lyric poem (gazal) written by Bayatî in
Persian language and a poem written by Cem Sultan in parallel to Bayatî‟s
gazal in Turkish language (nazire gazal) are also analysed in this chapter. In
Chapter Two a historical “tahmisnâme”, which is included in the epilogue of
Câm-ı Cem-âyîn and which is the subject matter of this study is analysed in
terms of form, content, and linguistic and stylistic properties. Having
paraphrased the full text of this important poem- which is in the tone of
friendly chat- with explanatory notes, the book reaches the conclusion and
ends with bibliography giving references
Sasaki metriğine göre konform vektör alanları.
No full textOn the tangent bundle of a Riemannian manifold the most natural choice of metric tensor field is the Sasaki metric. This immediately brings up the question of infinitesimal symmetries associated with the inherent geometry of the tangent bundle arising from the Sasaki metric. The elucidation of the form and the classification of the Killing vector fields have already been effected by the Japanese school of Riemannian geometry in the sixties. In this thesis we shall take up the conformal vector fields of the Sasaki metric with the help of relatively advanced techniques.Ph.D. - Doctoral Progra
Manyetik küresel sarkaç
No full textThe magnetic spherical pendulum is a mechanical system consisting of a pendulum whereof the bob is electrically charged, moving under the influence of gravitation and the magnetic field induced by a magnetic monopole deposited at the origin. Physically not directly realizable, it turns out to be equivalent to a reduction of the Lagrange top. This work is essentially the logbook of our attempts at understanding the simplest contemporary approaches to the magnetic spherical pendulum.M.S. - Master of Scienc
Method for sample preparation for cryoelectron microscopy (CEM) microreactor and loading platform
No full textA method for sample preparation for cryoelectron microscopy (CEM), wherein the sample is held in a microreactor, wherein the conditions in the microreactor are regulated relative to the environment, wherein the sample in the microreactor is frozen according to a quench freeze process, whereupon the sample, in frozen condition, is placed in the electron microscope. A microreactor for use with cryoelectron microscopy (CEM), comprising a first and second membrane, which membranes, at least in a condition of use, enclose a chamber, while the membranes are configured to last until at least the beginning of a quench freeze process.Applied Science
- …
