عنوان فارسی مقاله:
تکنیک های موازی برای تجزیه و تحلیل داده های بزرگ در نسخه جدید سرویس ارزیابی معاملات آتی
عنوان انگلیسی مقاله:
Parallel Techniques for Large Data Analysis in the New Version of a Futures Trading Evaluation Service ☆
سال انتشار : 2015
عنوان فارسی مقاله:
تجزیه و تحلیل داده های بزرگ برای مدیریت انرژی پویا در شبکه های هوشمندعنوان انگلیسی مقاله:
Big Data Analytics for Dynamic Energy Management in Smart Grids ☆
سال انتشار : 2015
عنوان فارسی مقاله:
مسیریابی خودکار اجزای تک بعدی انعطاف پذیر با محدودیت عملکردی و تولید
عنوان انگلیسی مقاله:
Automatic routing of flexible 1D components with functional and manufacturing constraints
سال انتشار : 2016
عنوان فارسی مقاله:
ادای احترام مجله طراحی به کمک کامپیوتر (CAD) به جرالد فارین
عنوان انگلیسی مقاله:
A CAD Tribute to Gerald Farin
سال انتشار : 2016
عنوان فارسی مقاله:
کنترل حداقل مقیاس طول در سطح مجموعه موضوع بهینه سازی توپولوژی به شعاع ماشینکاری
عنوان انگلیسی مقاله:
Minimum void length scale control in level set topology optimization subject to machining radii
سال انتشار : 2016
عنوان فارسی مقاله:
تعامل لمسی زمان واقعی خارج از هسته در مدل های بسیار بزرگ
عنوان انگلیسی مقاله:
Out-of-core real-time haptic interaction on very large models
سال انتشار : 2016
عنوان فارسی مقاله:
دانش خودکار بر پایه مدیریت: بررسی
عنوان انگلیسی مقاله:
Automated knowledge base management: A survey
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Knowledge may be a critical and strategic asset and the keyto competitiveness and success in highly dynamic environments,as it facilitates capacities essential for solving problems.For instance, expert systems, i.e. systems exploitingknowledge for automation of complex or tedious tasks, havebeen proven to be very successful when analyzing a set of oneor more complex and interacting goals in order to determinea set of actions to achieve those goals, and provide a detailedtemporal ordering of those actions, taking into account personnel,material, and other constraints [1].However, the ever increasing demand of more intelligentsystems makes knowledge has to be captured, processed,reused, and communicated in order to complete even moredifficult tasks. Nevertheless, achieving these new goals hasproven to be a formidable challenge since knowledge itselfis difficult to explicate and capture. Moreover, these tasksbecome even more difficult in fields where data and modelsare found in a large variety of formats and scales or insystems in which adding new knowledge at a later point isnot an easy task.But maybe the major bottleneck that is making very difficultthe proliferation of expert systems is that knowledge iscurrently often stored and managed using Knowledge Bases(KBs) that have been manually built [2]. In this context, KBsare the organized collections of structured and unstructuredinformation used by expert systems. This means that developinga system of this kind is very expensive in terms ofcost and time. Therefore, most current expert systems aresmall and have been designed for very specific environments.Within this overview, we aim to focus on the current stateof-the-art,problems that remain open and future researchchallenges for automatic building, exploiting and maintainingKBs so that more sophisticated expert systems can be automaticallydeveloped and practically used.The rest of this work is structured as follows: Section2 presents the state-of-the-art concerning automatedknowledge-base management. Section 3 identifies the problemsthat remain open. Section 4 proposes those challengesthat should be addressed and explains how their solution canhelp in the advancement of this field. Finally, we remark theconclusions.
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کلمات کلیدی:
McKinsey on Automation of Knowledge Work - - Intentional Softwarewww.intentsoft.com/mckinsey-on-automation-of-knowledge-work/McKinsey on Automation of Knowledge Work. McKinsey recently published a study on Disruptive technologies: Advances that will transform life, business, and ...[PDF]5. Automatic Knowledge Acquisition Iarantxa.ii.uam.es/~modonnel/IC/05_TreesI.pdfAutomatic Knowledge Acquisition. Contents. 5.1 The Bottleneck of Knowledge Aquisition. 5.2 Inductive Learning: Decision Trees. 5.3 Converting Decision Trees ...Automated knowledge acquisition for strategic knowledge | SpringerLinklink.springer.com/article/10.1007/BF00130716by TR Gruber - 1989 - Cited by 140 - Related articlesAbstract. Strategic knowledge is used by an agent to decide what action to perform next, where actions have consequences external to the agent. This article ...Automated knowledge extraction from the UMLS.https://www.ncbi.nlm.nih.gov › NCBI › Literature › PubMed Central (PMC)by Q Zeng - 1998 - Cited by 39 - Related articlesThis paper presents our work in extracting disease-chemical relationship knowledge from the UMLS Co-occurrence table (MRCOC) using an automated method ...Automated Knowledge Extraction for Decision Model Construction: A ...https://www.ncbi.nlm.nih.gov › NCBI › Literature › PubMed Central (PMC)by AL Zhu - 2003 - Cited by 21 - Related articlesCombinations of Medical Subject Headings (MeSH®) and Subheadings in MEDLINE® citations may be used to infer relationships among medical concepts.[PDF]Automated Knowledge Acquisition from Clinical Narrative ... - Peoplepeople.dbmi.columbia.edu/noemie/papers/amia08_xiaoyan.pdfby MA Xiaoyan Wang - Cited by 40 - Related articlesAutomated Knowledge Acquisition from Clinical Narrative Reports. Xiaoyan Wang, MA1, Amy Chused, MD1, Noémie Elhadad, PhD1,. Carol Friedman, PhD1* ...Automated knowledge discovery in advanced knowledge ...www.emeraldinsight.com/doi/full/10.1108/13673270510622500by J Davies - 2005 - Cited by 57 - Related articlesAutomatic KD approaches are not always the most appropriate, since often it is too hard or too costly to integrate the available background knowledge about the ...Automated knowledge base management: A survey - Science Directwww.sciencedirect.com/science/article/pii/S1574013715000192by J Martinez-Gil - 2015 - Cited by 7 - Related articlesThe rest of this work is structured as follows: Section 2 presents the state-of-the-art concerning automated knowledge-base management. Section 3 identifies the ...
عنوان فارسی مقاله:
استفاده کودکان جوان از صفحه لمسی تبلتها برای نوشتن و خواندن در خانه: رابطه با سواد آموزی اورژانسی
عنوان انگلیسی مقاله:
Young children's use of touch screen tablets for writing and reading at home: Relationships with emergent literacy
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
The home literacy environment plays a key role in the development of young children's awareness, understanding, andknowledge of written language such as letters and words (Aram & Levin, 2011; Sylva et al., 2011; Teale & Sulzby, 1986).Through their explorations, young children actively construct their knowledge about reading and writing (Cooper, 2005;Ferreiro & Teberosky, 1982; Korat, Shamir, & Arbiv, 2011; Tolchinsky, 2003). It has been well established that children's earlyinteractions with non-digital tools (e.g., paper-based story books, paper/crayons/paints) through home literacy activities suchas writing (e.g., letter and name writing), storybook reading, and identifying environmental print (e.g., signs and labels)positively influences emergent literacy (Aram & Levin, 2011; Neumann, Hood, Ford, & Neumann, 2011; Purcell-Gates, 1996;Whitehurst & Lonigan, 1998). For example, children learn about print through reading and writing of words such as theirnames (Van der Kooy-Hofland, Kegel, & Bus, 2011). Such early home print experiences lay the foundational blocks for theemergence of literacy skills such as letter name and sound knowledge, emergent writing, print concepts, and phonologicalawareness that are strong predictors of conventional reading and writing ability (Sen echal, Le Fevre, Smith-Chant, & Colton,2001; Welsch, Sullivan, & Justice, 2003; Whitehurst & Lonigan, 1998).Children's exploration of print via digital tools (e.g., desktop computers) in the home environment also has a positiveinfluence on emergent literacy skills (Hillman & Marshall, 2009; Hisrich & Blanchard, 2009; McManis & Gunnewig, 2012; Vander Kooy-Hofland et al., 2011). For example, e-books can foster word recognition and writing (Shamir & Korat, 2007) andphonological awareness (Korat & Shamir, 2007). Computers have also been shown to be effective writing tools for pre schoolers (Yost, 2003) and allow young children the opportunity to engage in writing, drawing, decorating texts, playinggames, and searching for information (Downes, 2002). For example, Downes (2002) reports a pre-schooler saying, “I playtyping games and I can play painting (p 192).” Digital tools with their multimodal features also enable young children toexpress themselves and represent their ideas through digital symbols, words, sounds, and images (Downes, 2002). Yost(2003) has shown how kindergarteners (N ¼ 8) competently used both digital (desktop computer) and non-digital tools(e.g., crayons, pencils, paper) for a range of writing activities such as creating signs, messages, lists, signing in, and writingstories. Children were observed to transfer their developing knowledge of letter and sound relationships and word spacingbetween these tools. This illustrates that young children are capable of using digital and nondigital tools for literacy learning
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کلمات کلیدی:
The use of touch-screen tablets at home and pre-school to foster ...journals.sagepub.com/doi/abs/10.1177/1468798415619773by MM Neumann - Cited by 7 - Related articlesDec 10, 2015 - The use of touch-screen tablets at home and pre-school to foster emergent ... Evidence is building that suggests tablets have the potential to foster emergent writing and ... and the importance of scaffolding young children's use of tablets at ... swipe, and read: Sharing e-books with toddlers and preschoolers.Frontiers | Using Touchscreen Tablets to Help Young Children Learn ...journal.frontiersin.org/article/10.3389/fpsyg.2016.01800/fullby F Wang - 2016 - Cited by 1 - Related articlesNov 1, 2016 - Using Touchscreen Tablets to Help Young Children Learn to Tell Time .... print concepts, and emergent writing (Neumann and Neumann, 2014). ... All children used an iPad touchscreen to learn to read a clock and then each ...[PDF]Touch Screen Tablets and Emergent Literacy - Connectresourcebinderecse.weebly.com/.../neuman__touch_screen_tablets_and_emerg_lit.pdfawareness) are important precursors of future reading and writing ability (Bowman and Treiman 2004; Cohen and. Cowen 2011; Whitehurst and Lonigan .... available for young children to use on touch screen tablets. Out of 315 Apple apps ...An examination of touch screen tablets and emergent ... - CiteSeerXciteseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.932.9012&rep=rep1&type...by MM Neumann - 2014 - Cited by 37 - Related articlesYoung children interact with touch screen tablets at home and this may impact ... The present study examined home access and use of touch screen tablets, ... concepts are important predictors of future reading ability (e.g. Adams, 1990; .... kindergarten classroom was found to foster children's emergent writing and print.Parent scaffolding of young children's use of touch screen tablets ...tandfonline.com/doi/full/10.1080/03004430.2016.1278215?ai=wf&mi=3rvjpt...KEYWORDS: Parent scaffolding, touch screen tablets, iPads, apps, young .... of non-digital activities (e.g. writing with paper/pencil; reading paper-printed books) ...Young children's use of touch screen tablets for writing and reading at ...https://www.deepdyve.com/.../young-children-s-use-of-touch-screen-tablets-for-writing-...Read "Young children. ... Young children's use of touch screen tablets for writing and. reading at home: Relationships with emergent literacy. Michelle M.
عنوان فارسی مقاله:
توزیع محتوای هاپ توسط هاپ با برنامه نویسی شبکه در شبکه بی سیم چند جهشی
عنوان انگلیسی مقاله:
Hop-by-hop Content Distribution with Network Coding in Multihop Wireless Networks
سال انتشار : 2017
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مقدمه انگلیسی مقاله:
1. Introduction
The predominant use of today's Internet is content access anddistribution. Multimedia content traffic is growing at an exponentialrate. This trend is expected to continue in the foreseeablefuture. For example, it is forecasted by Cisco [1] that globalmobile data traffic will increase nearly tenfold between 2014 and2019. Recently, there is renewed research interest in supportingmulticast distribution to deliver various services such as live eventvideo streaming, social content pushing, file sharing, softwareupgrades, mobile TV, as well as other applications for whichmultiple users concurrently consume the same content [2]. Thedemand for these applications is becoming increasingly common,and multicast is much more efficient in delivering them thanunicast by sharing network resources. The Third GenerationPartnership Project (3GPP) recently defined the Evolved MultimediaBroadcast/Multicast Service (eMBMS) standard [3] to supportstreaming and downloading applications. Several operatorshave started field trials for eMBMS services.These multicast applications have strict quality of service (QoS)requirements. Many of them require 100% reliability with highthroughput. Any packet loss may cause severe quality degradation,and users always desire to get content as quickly as possible. It ischallenging to achieve reliable and high-throughput multicast,especially in multihop wireless mesh networks (WMNs) due tointerference, channel fading, and limited bandwidth. Furthermore,a unique issue in multicast is bandwidth heterogeneity amongstmulticast receivers. The receivers with poor network connectivityor a low-throughput path from the source may greatly degrade theperformance of receivers with good network connectivity as thereliability requirements of the worst receiver have to be met.Traditional reliable multicast protocols, including eMBMS, areclient–server based, in which intermediate routers or forwardingnodes simply duplicate and forward packets. These protocolsemploy end-to-end forward error correction (FEC), automatic repeat request (ARQ) or hybrid FEC-ARQ techniques [4–7] at theapplication layer of the clients and servers to achieve multicastreliability. However, their performance is limited by the multicastreceivers with the worst path from the source.Network coding (NC) is an innovative technique to improvereliability and throughput in WMNs. The basic idea of NC is toallow intermediate forwarding nodes (FNs) to encode data packets,instead of simply replicating and forwarding packets, and thustake advantage of the wireless broadcast medium to reduce thenumber of required transmissions for delivery of the data [8,9].Especially, intra-flow random linear network coding [10,11] hasattracted interest due to its low control overhead and high effi-ciency along with implementation simplicity, in which a FN randomlygenerates linear combinations of received packets belongingto a data flow over some fields, and forwards the codedpackets. Random mixing at each FN ensures that if a group of FNshear the same packet transmission, with high probability, thecoded packets generated and forwarded by the different FNs willbe linearly independent, removing duplicate packet transmissionsover shared wireless medium. A node can not only receive thepackets from its direct parent node but also overhear the codedpackets of the same data flow transmitted by other neighbors.Intra-flow random NC thus makes opportunistic forwarding andoverhearing more effective in WMNs so as to achieve significantperformance gains compared to non-coding schemes.However, the use of NC introduces new challenges in designinga practical multicast protocol. First, a FN does not need to encodeand then forward a coded packet whenever it receives a packetfrom its upstream node because its downstream node may overhearpackets from other neighbors. Consider a simple example inwhich a source S multicasts two packets, P1 and P2, to two destinationreceivers, D1 and D2 through a FN, F, as shown in Fig. 1. Stransmits two coded packets, P P 1 2 + and P P 1 2 + 2 in sequence,which can be represented by the corresponding coding vectors (1,1) and (1, 2). Assume that F receives both packets, and D1 and D2overhear coded packets (1, 1) and (1, 2), respectively. In fact, F onlyneeds to generate one coded packet from the received two packets,e.g. 3P P 1 2 + 4 , and forward it. D1 and D2 can decode and obtainthe original packets P1 and P2 after they receive coded packet3P P 1 2 + 4 from F. However, F may not know that D1 and D2 haveoverheard a packet from S as it has limited knowledge of the receptionstatus of D1 and D2 with regard to the two packets sent byS. It is nontrivial for F to decide the number of coded packets itshould send and the time when to stop sending. Therefore, onechallenge in the NC protocol design is to address how many codedpackets each FN should send in order to guarantee all the multicastdestination receivers obtain enough packets to decode theoriginal data. In addition, how should the bandwidth heterogeneityof the paths from the source to the different destinationreceivers be handled by the multicast protocol? To deliver thebenefits offered by intra-flow NC, a practical protocol needs toaddress the above challenges.Although various NC schemes have been studied under differentnetwork settings, practical protocol design for reliable multicastwith NC in WMNs has received relatively little attention.MORE [11] and Pacifier [12] are the two state-of-the-art intra-flowNC-based multicast protocols with different selections of forwardingnode topologies. Both of them employ a transmissioncredit (TX_Credit) approach, in which the source computes andassigns a TX_Credit to each FN based on the periodical packet lossrate measurements of the links on the network. The sourcetransmits the coded packets from a data chunk, and the TX_Creditvalues are carried in the packet header that indicates the numberof coded packets a FN should transmit upon receiving the packetfrom its upstream node. An intermediate FN simply determineswhether and how many coded packets transmit to its downstreamnodes according to the TX_Credit assigned to it in the receivedpacket. The successful data delivery is verified through end-to-endacknowledgements (ACKs). The source continues sending codedpackets until it receives the ACKs from all its multicast destinationreceivers. However, with this approach, the FNs may transmit thepackets much more than necessary, significantly wasting wirelessresources, because it is very difficult to obtain the accurate estimationof the TX_Credit for each FN in dynamic wireless environments,and the end-to-end ACKs may be delayed or lost.In this paper, we take a different approach, and propose a novelintra-flow NC-based hop-by-hop reliable multicast protocol,termed HopCaster, to achieve high-throughput over WMNs andsolve the bandwidth heterogeneity issue of multicast receivers. Incontrast to the existing NC-based multicast protocols, HopCastercompletely eliminates the need for estimating the TX_Credit, aswell as simplifying multicast management and congestion control.Moreover, a cross-layer rate adaptation mechanism is proposed,which maximizes the multicast throughput by dynamically adjustingthe wireless transmission rate to the changes in the receiverpopulation and wireless channels during multicast of acoded data chunk. The evaluation results show that HopCasterachieves significant throughput gains compared to the state-ofthe-artNC-based multicast protocols.The remainder of this paper is organized as follows. Relatedwork is reviewed in Section 2. In Section 3, we present the HopCasterprotocol design. Section 4 describes the cross-layer rateadaptation mechanism. In Section 5 we show the evaluation resultsand performance comparison of HopCaster with the existingNC-based multicast protocol. The paper is concluded in Section 6.
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کلمات کلیدی:
[PDF]A Wireless Medium Access Control Using Network Coding for Multi ...https://www.eecs.harvard.edu/~htk/.../2008-milcom-cheng-kung-lin-su-vlah.pdfby CM Cheng - Cited by 18 - Related articlesRainbow: A Wireless Medium Access Control Using Network Coding for Multi-hop Content ... ticularly important to data broadcast in wireless distributed computing where ... tribution protocol for multi-hop wireless ad-hoc networks. The protocol ...[PDF]Network Coding for Multi- Hop Wireless Networks - IRMA Internationalwww.irma-international.org/viewtitle/36549/Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. ... Network Coding for Multi-Hop Wireless Networks.[PDF]Application of network coding in wireless networks - Halhttps://hal.archives-ouvertes.fr/tel-01022166/documentRelated articlesJul 10, 2014 - 2.5.2 Distributed Coding-Aware Routing (DCAR) . . . . . . . . . . 23 ... 2.7.1.1 Multi-hop traffic flows in wireless networks . . . . . . 33. 2.7.1.2 ...Hop-by-hop Content Distribution with Network Coding in Multihop ...https://www.researchgate.net/.../308004170_Hop-by-hop_Content_Distribution_with_N...Download academic paper: Hop-by-hop Content Distribution with Network Coding in Multihop Wireless Networks on ResearchGate.Multiantenna Analog Network Coding for Multihop Wireless Networkshttps://www.hindawi.com/journals/ijdmb/2010/368562/by R Annavajjala - 2010 - Cited by 12 - Related articlesOct 26, 2009 - Multiantenna Analog Network Coding for Multihop Wireless Networks ... which permits unrestricted use, distribution, and reproduction in any ...[PDF]Network Coding for Efficient Wireless Unicast - MITwww.rle.mit.edu/ncrc/wp-content/uploads/.../2006_network_coding_efficient.pdfby DS Lun - Cited by 124 - Related articlesunicast connections over wireless packet networks. We show how network coding, combined with distributed flow optimiza- tion, gives a practicable ..... ments for unicast in multi-hop wireless networks, and we have suggested practicable ...Network Coding for Severe Packet Reordering in Multihop Wireless ...dsn.sagepub.com/content/11/8/379108.fullNetwork coding is known to be effective in overcoming packet losses and packet reordering in multihop wireless networks. Despite the benefits, network coding ...
عنوان فارسی مقاله:
آیا ذخیره ویدئو باعث بهبود انرژی در شبکه های نوری هسته آینده شود؟
عنوان انگلیسی مقاله:
?Will video caching remain energy efficient in future core optical networks
سال انتشار : 2017
