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Energy conversion: A cobalt redox mediator, [Co(bpyPY4)]2+/3+, based on a hexadentate polypyridyl ligand, was developed. Dye-sensitized solar cells (DSCs) made with this redox mediator showed improved stability and slightly higher efficiencies compared to [Co(bpy)3]2+/3+-based devices. Long-term stability evaluation of DSCs based on [Co(bpyPY4)]2+/3+ revealed excellent stability under full irradiation conditions (see picture). As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Bu söyleşi, Loïc Wacquant 17 Ocak 2014’te Hrant Dink İnsan Hakları ve İfade Özgürlüğü Konferansı’nda konuşmacı olarak Türkiye’ye geldiğinde, Boğaziçi Üniversitesi’nde gerçekleştirilmiştir. Söyleşi üç temel konu etrafında biçimlenmektedir: Kentsel marjinalliğin değişen yapısını ve ileri marjinalliğin özgün niteliklerini açıklığa kavuşturmak, Bourdieucü kent sosyolojisinin imkânlarını sorgulamak ve bu özgün bakışı Gezi Olayları’nın analizinde işe koşmak. Söyleşi ilk olarak, sanayisizleşmenin yaygınlaşmasının, ücretli emeğin parçalanmasının ve refah devletinin küçülmesinin ileri marjinalliğin doğuşundaki rolüne odaklanıyor. Bu amaç doğrultusunda Wacquant, bürokrasi alanında yaşanan dönüşümlere, devletin sağ elindeki genişlemeye odaklanarak neoliberal devlet inşasının Karl Polanyi ve Carl Schmitt sorunsallarına nasıl cevap ürettiğini netliğe kavuşturur. Ardından neoliberalizmin fiili mantığını açıklamak için başvurulan Bourdieucü kavram setinin, kent sosyolojisi için açtığı yeni imkânlar sorgulanır. Bourdieucü bakış, kent sosyolojisini fesh edip, onu daha genel topolojik sosyolojinin bir alt başlığı olarak mekân sosyolojisine dönüştürebileceği gibi, çeşitli sermaye türlerinin yoğunlaştığı, biriktiği ve farklılaştığı, toplumsal uzamla eş-mantıklı fiziksel uzamın analizi biçiminde yeniden formüle edebilir. Son olarak, Bourdieucü bakış açısının Gezi Olayları’nın analizinde nasıl kullanılabileceği tartışılıyor.
In this paper, we demonstrate how Yamakawa's chaotic chips and Chua's circuits can be used to implement a secure communication system based on chaotic modulation/demodulation systems. Furthermore, their performance for the secure communication is discussed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
The volume, veracity, variability, and velocity of data produced from the ever increasing network of sensors connected to Internet pose challenges for power management, scalability, and sustainability of cloud computing infrastructure. Increasing the data processing capability of edge computing devices at lower power requirements can reduce several overheads for cloud computing solutions. This paper provides the review of neuromorphic CMOS-memristive architectures that can be integrated into edge computing devices. We discuss why the neuromorphic architectures are useful for edge devices and show the advantages, drawbacks, and open problems in the field of neuromemristive circuits for edge computing.
An option is a short-term skill consisting of a control policy for a specified region of the state space, and a termination condition recognizing leaving that region. In prior work, we proposed an algorithm called Deep Discovery of Options (DDO) to discover options to accelerate reinforcement learning in Atari games. This paper studies an extension to robot imitation learning, called Discovery of Deep Continuous Options (DDCO), where low-level continuous control skills parametrized by deep neural networks are learned from demonstrations. We extend DDO with: (1) a hybrid categorical-continuous distribution model to parametrize high-level policies that can invoke discrete options as well continuous control actions, and (2) a cross-validation method that relaxes DDO's requirement that users specify the number of options to be discovered. We evaluate DDCO in simulation of a 3-link robot in the vertical plane pushing a block with friction and gravity, and in two physical experiments on the da Vinci surgical robot, needle insertion where a needle is grasped and inserted into a silicone tissue phantom, and needle bin picking where needles and pins are grasped from a pile and categorized into bins. In the 3-link arm simulation, results suggest that DDCO can take 3x fewer demonstrations to achieve the same reward compared to a baseline imitation learning approach. In the needle insertion task, DDCO was successful 8/10 times compared to the next most accurate imitation learning baseline 6/10. In the surgical bin picking task, the learned policy successfully grasps a single object in 66 out of 99 attempted grasps, and in all but one case successfully recovered from failed grasps by retrying a second time.
The Great Depression of the 1930s and the Great Credit Crisis of the 2000s had similar causes but elicited strikingly different policy responses. While it remains too early to assess the effectiveness of current policy, it is possible to analyse monetary and fiscal responses in the 1930s as a natural experiment or counterfactual capable of shedding light on the impact of current policies. We employ vector autoregressions, instrumental variables, and qualitative evidence for 27 countries in the period 1925–39. The results suggest that monetary and fiscal stimulus was effective -- that where it did not make a difference it was not tried. They shed light on the debate over fiscal multipliers in episodes of financial crisis. They are consistent with multipliers at the higher end of those estimated in the recent literature, and with the argument that the impact of fiscal stimulus will be greater when banking systems are dysfunctional and monetary policy is constrained by the zero bound.— Miguel Almunia, Agustín Bénétrix, Barry Eichengreen, Kevin H. O’Rourke and Gisela Rua
: A study was conducted to improve the quality and performance of leads loaded with Composition A-5. The effect of parameters, such as stearic acid content, HMX content, and RDX particle size, on Comp A-5 sensitivity was examined. Parameters affecting load uniformity and output studied were A-5 particle size and density. Results show A-5 particle size had the greatest effect on lead performance and quality.
