630 research outputs found

    Game-Theoretic Pricing and Selection with Fading Channels

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    We consider pricing and selection with fading channels in a Stackelberg game framework. A channel server decides the channel prices and a client chooses which channel to use based on the remote estimation quality. We prove the existence of an optimal deterministic and Markovian policy for the client, and show that the optimal policies of both the server and the client have threshold structures when the time horizon is finite. Value iteration algorithm is applied to obtain the optimal solutions for both the server and client, and numerical simulations and examples are given to demonstrate the developed result.Comment: 6 pages, 4 figures, accepted by the 2017 Asian Control Conferenc

    China\u27s Foreign Economic Contract Law: Its Significance and Analysis

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    Postrevolutionary China did not trade with the West prior to the announcement of its open door policy in 1977, when one-fifth of the world\u27s population joined the mainstream global trading system. Since then, China\u27s trade has increased dramatically, particularly with the United States. China\u27s need for trade regulation and control resulted in the Foreign Economic Contract Law\u27 ( FECL ) in 1985. Through an understanding of the FECL\u27s provisions and East-West trade characteristics, the practitioner may become an effective advisor to clients who trade with China or who are considering doing so

    Deterministic and Unambiguous Dense Coding

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    Optimal dense coding using a partially-entangled pure state of Schmidt rank DΛ‰\bar D and a noiseless quantum channel of dimension DD is studied both in the deterministic case where at most LdL_d messages can be transmitted with perfect fidelity, and in the unambiguous case where when the protocol succeeds (probability Ο„x\tau_x) Bob knows for sure that Alice sent message xx, and when it fails (probability 1βˆ’Ο„x1-\tau_x) he knows it has failed. Alice is allowed any single-shot (one use) encoding procedure, and Bob any single-shot measurement. For Dˉ≀D\bar D\leq D a bound is obtained for LdL_d in terms of the largest Schmidt coefficient of the entangled state, and is compared with published results by Mozes et al. For DΛ‰>D\bar D > D it is shown that LdL_d is strictly less than D2D^2 unless DΛ‰\bar D is an integer multiple of DD, in which case uniform (maximal) entanglement is not needed to achieve the optimal protocol. The unambiguous case is studied for Dˉ≀D\bar D \leq D, assuming Ο„x>0\tau_x>0 for a set of DΛ‰D\bar D D messages, and a bound is obtained for the average \lgl1/\tau\rgl. A bound on the average \lgl\tau\rgl requires an additional assumption of encoding by isometries (unitaries when DΛ‰=D\bar D=D) that are orthogonal for different messages. Both bounds are saturated when Ο„x\tau_x is a constant independent of xx, by a protocol based on one-shot entanglement concentration. For DΛ‰>D\bar D > D it is shown that (at least) D2D^2 messages can be sent unambiguously. Whether unitary (isometric) encoding suffices for optimal protocols remains a major unanswered question, both for our work and for previous studies of dense coding using partially-entangled states, including noisy (mixed) states.Comment: Short new section VII added. Latex 23 pages, 1 PSTricks figure in tex

    The sex-specific effects of diet quality versus quantity on morphology in Drosophila melanogaster

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    This deposit is composed by the main article plus the supplementary materials of the publication.Variation in the quality and quantity of nutrition is a major contributor to phenotypic variation in animal populations. Although we know much of how dietary restriction impacts phenotype, and of the molecular-genetic and physiological mechanisms that underlie this response, we know much less of the effects of dietary imbalance. Specifically, although dietary imbalance and restriction both reduce overall body size, it is unclear whether both have the same effect on the size of individual traits. Here, we use the fruit fly Drosophila melanogaster to explore the effect of dietary food versus protein-to-carbohydrate ratio on body proportion and trait size. Our results indicate that body proportion and trait size respond differently to changes in diet quantity (food concentration) versus diet quality (protein-to-carbohydrate ratio), and that these effects are sex specific. While these differences suggest that Drosophila use at least partially distinct developmental mechanisms to respond to diet quality versus quantity, further analysis indicates that the responses can be largely explained by the independent and contrasting effects of protein and carbohydrate concentration on trait size. Our data highlight the importance of considering macronutrient composition when elucidating the effect of nutrition on trait size, at the levels of both morphology and developmental physiology.National Science Foundation grants: (IOS-1557638, IOS-0919855); Lake Forest College.info:eu-repo/semantics/publishedVersio

    Reactive Oxygen Species Production and Brugia Pahangi Survivorship in Aedes polynesiensis with Artificial Wolbachia Infection Types

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    Heterologous transinfection with the endosymbiotic bacterium Wolbachia has been shown previously to induce pathogen interference phenotypes in mosquito hosts. Here we examine an artificially infected strain of Aedes polynesiensis, the primary vector of Wuchereria bancrofti, which is the causative agent of Lymphatic filariasis (LF) throughout much of the South Pacific. Embryonic microinjection was used to transfer the wAlbB infection from Aedes albopictus into an aposymbiotic strain of Ae. polynesiensis. The resulting strain (designated MTB ) experiences a stable artificial infection with high maternal inheritance. Reciprocal crosses of MTB with naturally infected wild-type Ae. polynesiensis demonstrate strong bidirectional incompatibility. Levels of reactive oxygen species (ROS) in the MTB strain differ significantly relative to that of the wild-type, indicating an impaired ability to regulate oxidative stress. Following a challenge with Brugia pahangi, the number of filarial worms achieving the infective stage is significantly reduced in MTB as compared to the naturally infected and aposymbiotic strains. Survivorship of MTB differed significantly from that of the wild-type, with an interactive effect between survivorship and blood feeding. The results demonstrate a direct correlation between decreased ROS levels and decreased survival of adult female Aedes polynesiensis. The results are discussed in relation to the interaction of Wolbachia with ROS production and antioxidant expression, iron homeostasis and the insect immune system. We discuss the potential applied use of the MTB strain for impacting Ae. polynesiensis populations and strategies for reducing LF incidence in the South Pacific

    "Taking Care of a Fruit Tree": Nurturing as a Layer of Concern in Online Community Moderation

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    Care in communities has a powerful influence on potentially disruptive social encounters. Practising care in moderation means exposing a group's core values, which, in turn, has the potential to strengthen identity and relationships in communities. Dissent is as inevitable in online communities as it is in their offline counterparts. However, dissent can be productive by sparking discussions that drive the evolution of community norms and boundaries, and there is value in understanding the role of moderation in this process. Our work draws on an exploratory analysis of moderation practices in the MetaFilter community, focusing on cases of intervention and response. We identify and analyse MetaFilter moderation with the metaphor: ``taking care of a fruit tree'', which is quoted from an interview with moderators on MetaFilter. We address the relevance of care as it is evidenced in these MetaFilter exchanges, and discuss what it might mean to approach an analysis of online moderation practices with a focus on nurturing care. We consider how HCI researchers might make use of care-as-nurture as a frame to identify multi-faceted and nuanced concepts characterising dissent and to develop tools for the sustainable support of online communities and their moderators

    The Nature Diagnosability of Bubble-sort Star Graphs under the PMC Model and MM Model

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    Many multiprocessor systems have interconnection networks as underlying topologies and an interconnection network is usually represented by a graph where nodes represent processors and links represent communication links between processors. No fault set can contain all the neighbors of any fault-free vertex in the system, which is called the nature diagnosability of the system. Diagnosability of a multiprocessor system is one important study topic. As a famous topology structure of interconnection networks, the -dimensionalnbsp bubble-sort star graph nbsphas many good properties. In this paper, we prove that the nature diagnosability of nbspis nbspunder the PMC model for , the nature diagnosability of nbspis nbspunder the MM model for
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