16,571 research outputs found
Distributed multitarget probabilistic coverage control algorithm for wireless sensor networks
No full textThis paper is concerned with the problem of multitarget coverage based on probabilistic detection model. Coverage configuration is an effective method to alleviate the energy-limitation problem of sensors. Firstly, considering the attenuation of node's sensing ability, the target probabilistic coverage problem is defined and formalized, which is based on Neyman-Peason probabilistic detection model. Secondly, in order to turn off redundant sensors, a simplified judging rule is derived, which makes the probabilistic coverage judgment execute on each node locally. Thirdly, a distributed node schedule scheme is proposed for implementing the distributed algorithm. Simulation results show that this algorithm is robust to the change of network size, and when compared with the physical coverage algorithm, it can effectively minimize the number of active sensors, which guarantees all the targets γ-covered. © 2014 Ying Tian et al
Mining for Social Serendipity
No full textA common social problem at an event in which people do not personally know all of the other participants is the natural tendency for cliques to form and for discussions to mainly happen between people who already know each other. This limits the possibility for people to make interesting new acquaintances and acts as a retarding force in the creation of new links in the social web. Encouraging users to socialize with people they don't know by revealing to them hidden surprising links could help to improve the diversity of interactions at an event. The goal of this paper is to propose a method for detecting "surprising" relationships between people attending an event. By "surprising" relationship we mean those relationships that are not known a priori, and that imply shared information not directly related with the local context of the event (location, interests, contacts) at which the meeting takes place. To demonstrate and test our concept we used the Flickr community. We focused on a community of users associated with a social event (a computer science conference) and represented in Flickr by means of a photo pool devoted to the event. We use Flickr metadata (tags) to mine for user similarity not related to the context of the event, as represented in the corresponding Flickr group. For example, we look for two group members who have been in the same highly specific place (identified by means of geo-tagged photos), but are not friends of each other and share no other common interests or, social neighborhood
Long-term prediction of discharges in Manwan Hydropower using adaptive-network-based fuzzy inference systems models
No full textAuthor name used in this publication: Chun-Tian ChengAuthor name used in this publication: Ying-Guang SunAuthor name used in this publication: Kwokwing ChauAuthor name used in this publication: Jian-Yi Lin2004-2005 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishedGreen (AAM
Atympanophrys Tian & Hu 1983
No full textIII. Genus Atympanophrys Tian & Hu, 1983 Suggested common name: Hidden-tympanum horned toads (in English) / ĿHDzfl (in Chinese) Four species: Atympanophrys shapingensis (Liu, 1950) (type species); Atympanophrys gigantica (Liu, Hu & Yang, 1960); Atympanophrys nankiangensis (Liu & Hu, 1966); Atympanophrys wawuensis (Fei, Jiang & Zheng, 2001).Published as part of Qi, Shuo, Lyu, Zhi-Tong, Wang, Jian, Mo, Yun-Ming, Zeng, Zhao-Chi, Zeng, Yang-Jin, Dai, Ke-Yuan, Li, Yuan-Qiu, Grismer, L. Lee & Wang, Ying-Yong, 2021, Three new species of the genus Boulenophrys (Anura, Megophryidae) from southern China, pp. 401-438 in Zootaxa 5072 (5) on page 430, DOI: 10.11646/zootaxa.5072.5.1, http://zenodo.org/record/574897
Brachytarsophrys Tian & Hu 1983
No full textIV. Genus <i>Brachytarsophrys</i> Tian & Hu, 1983 <p>Suggested common name: Short-legged toads (in English) / 短DZDzfl (in Chinese)</p>Published as part of <i>Qi, Shuo, Lyu, Zhi-Tong, Wang, Jian, Mo, Yun-Ming, Zeng, Zhao-Chi, Zeng, Yang-Jin, Dai, Ke-Yuan, Li, Yuan-Qiu, Grismer, L. Lee & Wang, Ying-Yong, 2021, Three new species of the genus Boulenophrys (Anura, Megophryidae) from southern China, pp. 401-438 in Zootaxa 5072 (5)</i> on page 430, DOI: 10.11646/zootaxa.5072.5.1, <a href="http://zenodo.org/record/5748979">http://zenodo.org/record/5748979</a>
Hydroxy-terminated polyether binders for composite rocket propellants
No full textPropellants based on cross-linked Hydroxy Terminated PolyEther (HTPE) binders are
being used as alternatives to Hydroxy Terminated PolyButadiene (HTPB) compositions.
HTPE propellants have similar mechanical properties to HTPB propellants but they give
a less severe response in ‘slow cook-off’ tests for IM compliance. A literature review is
presented on the development and properties of HTPE propellants in an attempt to place
them in relation to recent trends in Insensitive Munitions. To gain a better understanding
of the behaviour of HTPE propellants an HTPE pre-polymer and a range of binder
network samples with different NCO/OH equivalence ratios, with and without
plasticizer, have been synthesised and characterised by a range of techniques. The
thermal decomposition of the HTPE binder network and propellant samples were also
studied. Desmodur N-3200 was used as a curing agent and n-BuNENA as an energetic
plasticizer. Similar analyses were performed on analogous HTPB pre-polymer and
binder network samples and the results were compared with those obtained for the
corresponding HTPE samples. Two kinds of HTPE propellant were manufactured
containing HTPE pre-polymer, n-BuNENA, 2NDPA and either AP or AP+PSAN as
oxidiser. Also HTPB propellant was prepared. Small cook-off test vehicles (SCTV)
were filled with HTPE and HTPB propellants and slow cook-off tests were performed.
In contrast to HTPB binders, which become harder during slow heating, it was found
that the HTPE binders soften under the same conditions. This behaviour is possibly due
to chain scission of the soft and hard segments of the HTPE polymer matrix. Thermooxidative
processes and reactions of the energetic plasticizer decomposition products
are believed to be the responsible for the scission of the polymeric matrix. From the
binder characterisation and slow cook-off results it is concluded that there is a relation
between the degree of polymeric matrix scission during slow heating and the violence
of the response at the point of self ignition. This underlies the main difference between
HTPB and HTPE propellants in slow cook-off. While HTPB compositions become
harder and more brittle, HTPE propellants become softer and have a lower surface area
at the self ignition point
Futaki Invariant and CM Polarization
No full textThis is an expository paper. We will discuss various formulations of Futaki invariant and its relation to the CM line bundle. We will discuss their connections to the K-energy. We will also include proof for certain known results which may not have been well presented or less accessible in the literature. We always assume that M is a compact Kahler manifold. By a polarization, we mean a positive line bundle L over M, then we call (M, L) a polarized manifold.EICPCI-S(ISTP)[email protected]
sj-pdf-1-imr-10.1177_03000605231163780 - Supplemental material for hMSH2 coordinated with the expression of E2F1 promotes platinum response in epithelial ovarian cancer
No full textSupplemental material, sj-pdf-1-imr-10.1177_03000605231163780 for hMSH2 coordinated with the expression of E2F1 promotes platinum response in epithelial ovarian cancer by Xiao-qian Hu, Bao-ying Zhang and Tian Hua in Journal of International Medical Research</p
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