ppxscal/embedding_network huggingface dataset:
Proceedings of the 8th workshop on Aspects, components, and patterns for infrastructure software
Venue: Aspect-oriented software development (2009)

Welcome to the 8th Workshop on Aspects, Components, and Patterns for Infrastructure Software -- ACP4IS '09. This year's workshop continues its tradition of providing a highly interactive forum for researchers and developers to discuss the application of and relationships between aspects, components, and patterns within modern infrastructure software. The goal is to put aspects, components, and patterns into a common reference frame and to build connections between the software engineering and systems communities. The call for papers attracted 10 submissions from Asia, Europe, and the United States. The program committee accepted 8 papers that covered a variety of topics.
Multihop wireless networks with infrastructure support (MWNIs): extending the coverage of WLANs with multihop networks
Authors: Kin Choong Yow, Huiqing Wang
Venue: Proceedings of the 2008 International Conference on Advanced Infocomm Technology (2008)

We consider a multihop wireless network with infrastructure support (MWNI) that can be constructed from an existing IEEE 802.11 based WLANs with multihop extension. Assuming that only a singe network interface card operating on a single channel MAC is equipped in each mobile host, we identify the characteristics of such a network and the challenges in designing a routing algorithm to maximally utilize all the available channels. A new load metric is first proposed that considers possible spatial reuse, and a QoS-aware routing protocol is then proposed to enhance the QoS for the admitted traffic. Through simulation evaluation, a routing algorithm with such considerations is shown to be able to achieve more stable performance comparing with existing routing algorithms in MWNIs, while fully utilizing available resources.
Automatic calibration of a rainfall-runoff model using a fast and elitist multi-objective particle swarm algorithm
Authors: Yang Liu
Venue: Expert Systems with Applications: An International Journal (2009)

In order to successfully calibrate a numerical model, multiple criteria should be considered. Multi-objective genetic algorithms (MOGAs) have proved effective in numerous such applications, where most of the techniques relying on the condition of Pareto efficiency to compare different solutions. In this paper, a new non-dominated sorting particle swarm optimisation (NSPSO), is proposed, that combines the operations (fast ranking of non-dominated solutions, crowding distance ranking and elitist strategy of combining parent population and offspring population together) of a known MOGA NSGA-II and the other advanced operations (selection and mutation operations) with a single particle swarm optimisation (PSO). The efficacy of this algorithm is demonstrated on the calibration of a rainfall-runoff model, and the comparison is made with the NSGA-II. The simulation results suggest that the proposed optimisation framework is able to achieve good solutions as well diversity compared to the NSGA-II optimisation framework.
Preliminary observation of HRI in robot-assisted medical response
Authors: Robin Murphy, Masashi Konyo, Pedro Davalas, Gabe Knezek, Satoshi Tadokoro, Kazuna Sawata, Maarten Van Zomeren
Venue: Proceedings of the 4th ACM/IEEE international conference on Human robot interaction (2009)

This video captures human-robot interaction which occurred during an evaluation of a novel, snake-like search and rescue robot assisting with victim management. Most of the observations confirmed previous findings- That a 2:1 H-R ratio ratio is appropriate, Team coordination is enhanced by shared visual perception, and Poor interfaces continue to lead to incomplete coverage. However, the victims responded to the robot in two surprising ways: grabbing the robot and being concerned about its appearance.
Terrain sketching
Authors: James Gain, Patrick Marais, Wolfgang Straßer
Venue: Proceedings of the 2009 symposium on Interactive 3D graphics and games (2009)

Procedural methods for terrain synthesis are capable of creating realistic depictions of heightfield terrains with little user intervention. However, users often do wish to intervene in controlling the placement and shape of landforms, but without sacrificing realism. In this paper, we present a sketching interface to procedural terrain generation. This system enables users to draw the silhouette, spine and bounding curves of both extruding (hills and mountains) and embedding landforms (river courses and canyons). Terrain is interactively generated to match the sketched constraints using multiresolution surface deformation. In addition, the wavelet noise characteristics of silhouette strokes are propagated to the surrounding terrain. With terrain sketching users can interactively create or modify landscapes incorporating varied and complex land-forms.
Automatic Eigentemplate Learning for Sparse Template Tracker
Authors: Keiji Sakabe, Tomoyuki Taguchi, Takeshi Shakunaga
Venue: Proceedings of the 3rd Pacific Rim Symposium on Advances in Image and Video Technology (2009)

Automatic eigentemplate learning is discussed for a sparse template tracker. It is known that a sparse template tracker can effectively track a moving target using an eigentemplate when it is appropriately prepared for a motion class or for an illumination class. However, it has not been easy to prepare an eigentemplate automatically for any image sequences. This paper provides a feasible solution to this problem in the framework of sparse template tracking. In the learning phase, the sparse template tracker adaptively tracks a target object in a given image sequence when the first template is provided in the first image. By selecting a small number of representative and effective images, we can make up an eigentemplate by the principal component analysis. Once the eigentemplate learning is accomplished, the sparse template tracker can work with the eigentemplate instead of an adaptive template. Since the sparse eigentemplate tracker doesn't require any adaptive tracking, it can work more efficiently and effectively for image sequences in the class of learned appearance changes. Experimental results are provided for real-time face tracking when eigentemplates are learned for pose changes and for illumination changes, respectively.
Getting Started With Computing Concepts, 7th edition
Authors: Robert T. Grauer, Lynn Hogan
Venue: Ex-Ploring Series (2007)

The Exploring series helps students master the How and Why of performing tasks in Office to gain a greater understanding of how to use the individual applications together to solve business problems. Exploring titles feature Perfect pages where every step of every hands-on exercise as well as every end-of-chapter problem begins on a new page and has its own screen shot to make it easier to follow. Each chapter contains Hands-on Exercises, Capstone Exercises, and Mini-Cases for practicing and reviewing skills acquired. Ideal for students and individuals seeking a comprehensive introduction to computer concepts for Microsoft Office 2007.
Welfare States and Social Trust: `Crowding-Out' Dilemma
Authors: Larysa Tamilina
Venue: Trust in Agent Societies: 11th International Workshop, TRUST 2008, Estoril, Portugal, May 12 -13, 2008. Revised Selected and Invited Papers (2008)

Crowding-out hypothesis holds that welfare state development tends to erode social trust. In analyzing this relationship, the welfare state is usually operationalized through total social spending assuming automatically identical effects of different social policies on social trust and ignoring the notion of targeting. The main objective of this study is to check if specification of the internal structure of social spending will help to find evidence supporting the crowding-out hypothesis. The specification is done around functional and institutional axes which take account of the type of risk the social policy covers and the design of benefit schemes it offers. The result obtained provided no support for crowding-out hypothesis in the case of sub-samples for pensioners and unemployed, but they were detected when using single indicator for social spending on means-tested schemes. The ACM Portal is published by the Association for Computing Machinery. Copyright © 2010 ACM, Inc. Terms of Usage Privacy Policy Code of Ethics Contact Us Useful downloads: Adobe Acrobat QuickTime Windows Media Player Real Player
A photo-polymerization resist for UV nanoimprint lithography
Authors: Chun-Chang Wu, Steve Lien-Chung Hsu, Wen-Chang Liao
Venue: Microelectronic Engineering (2009)

A novel liquid photo-polymerization resist was prepared for nanoimprint lithography on transparent flexible plastic substrates. The resist is a mixture of polymethylmethacrylate (PMMA), methylmethacrylate (MMA), methacylic acid (MAA) and two photo-initiators, (2-isopropyl thioxanthone (ITX) and ethyl 4-(dimethylamino)benzoate (EDAB)). The resist can be imprinted at room temperature with a pressure of 0.25kg/cm^2, and then exposed from the transparent substrate side using a broad band UV lamp to obtain nano- and micro-scale patterns. Replications of high-density line and space patterns with resolution of 150nm were obtained on a flexible indium tin oxide/poly(ethylene terephthalate) (ITO/PET) substrate. The liquid resist has low viscosity due to the liquid monomers, and low shrinkage due to the addition of PMMA as a binder.
Attention-from-motion: A factorization approach for detecting attention objects in motion
Authors: Yiqun Hu, Deepu Rajan, Liang-Tien Chia
Venue: Computer Vision and Image Understanding (2009)

This paper introduces the notion of attention-from-motion in which the objective is to identify, from an image sequence, only those object in motions that capture visual attention (VA). Following the important concept in film production, viz, the tracking shot, we define the attention object in motion (AOM) as those that are tracked by the camera. Three components are proposed to form an attention-from-motion framework: (i) a new factorization form of the measurement matrix to describe dynamic geometry of moving object observed by moving camera; (ii) determination of single AOM based on the analysis of certain structure on the motion matrix; (iii) an iterative framework for detecting multiple AOMs. The proposed analysis of structure from factorization enables the detection of AOMs even when only partial data is available due to occlusion and over-segmentation. Without recovering the motion of either object or camera, the proposed method can detect AOM robustly from any combination of camera motion and object motion and even for degenerate motion.
Uplink multiservice capacity and interference statistics of WCDMA macrocells with antenna diversity reception in a multipath fading environment
Authors: Bazil Taha Ahmed, Miguel Calvo Ramon
Venue: Computer Communications (2009)

We generalize the interference modeling method developed by Romero-Jerez et al. to include the effect of the number of Rake fingers, uplink orthogonality factor, number of receiving antennas and the cell radius on the cell uplink capacity. With this model, the capacity of the system for voice only users, data users only and mixed services is obtained. It is noticed that increasing the cell radius from 400 to 800m reduces the uplink capacity for voice and data services. It is shown that the synchronous WCDMA will increase the uplink capacity by 16.9%. For the nonfading case, the uplink capacity is 12.5% higher than the uplink capacity with a fading channel.
Translational integrity and continuity: Personalized biomedical data integration
Authors: Xiaoming Wang, Lili Liu, James Fackenthal, Shelly Cummings, Oluwatobi I. Olopade, Kisha Hope, Jonathan C. Silverstein, Olufunmilayo I. Olopade
Venue: Journal of Biomedical Informatics (2009)

Translational research data are generated in multiple research domains from the bedside to experimental laboratories. These data are typically stored in heterogeneous databases, held by segregated research domains, and described with inconsistent terminologies. Such inconsistency and fragmentation of data significantly impedes the efficiency of tracking and analyzing human-centered records. To address this problem, we have developed a data repository and management system named TraM (http://tram.uchicago.edu), based on a domain ontology integrated entity relationship model. The TraM system has the flexibility to recruit dynamically evolving domain concepts and the ability to support data integration for a broad range of translational research. The web-based application interfaces of TraM allow curators to improve data quality and provide robust and user-friendly cross-domain query functions. In its current stage, TraM relies on a semi-automated mechanism to standardize and restructure source data for data integration and thus does not support real-time data application.
Towards a user-friendly semantic formalism for natural language generation
Authors: Craig Thomas
Venue: Crossroads (2008)

Computational semantics has become an interesting and important branch of computational linguistics. Born from the fusion of formal semantics and computer science, it is concerned with the automated processing of meaning associated with natural language expressions [2]. Systems of semantic representation, hereafter referred to as semantic formalisms, exist to describe meaning underlying natural language expressions. To date, several formalisms have been defined by researchers from a number of diverse disciplines including philosophy, logic, psychology and linguistics. These formalisms have a number of different applications in the realm of computer science. For example, in machine translation a sentence could be parsed and translated into a series of semantic expressions, which could then be used to generate an utterance with the same meaning in a different language [14]. This paper presents two existing formalisms and examines their user-friendliness. Additionally, a new form of semantic representation is proposed with wide coverage and user-friendliness suitable for a computational linguist.
Distributed ad-hoc passive routing path selection algorithm with prioritized broadcasting order based on non-realtime and semi-global routing information
Authors: Chia-Chun Chang, Min-Kuan Chang
Venue: Proceedings of the International Conference on Mobile Technology, Applications, and Systems (2008)

In an ad-hoc network, we need to find the path to the destination prior to the start of transmission between two users. In such an environment, proactive routing protocols, such as AODV and DSR, are widely used to discover a suitable routing path for two ends. However, without taking other issues, such as energy, jitter and so on, into account, the chosen relay nodes in these routing protocol is optimal from the viewpoints of energy and jitter. In this work, we address a distributed ad-hoc passive Routing Path Selection Algorithm (DPPA) to select the relay nodes. The concept of DPPA is derived from Power-Aware Source Routing protocol (PSR)[2] and AODV. In DPPA, we prioritize the broadcasting order of co-located nodes according to the energy level and dynamically adjust the broadcasting jitter according to the relative energy levels of co-located nodes. In addition, the listening delay is also dynamically adjusted according to the broadcasting jitter time. Adopting these mechanism, the route initial delay could be greatly reduced. Meanwhile, we propose a novel relay node selection metric, which utilizes the information of the reverse path. Based on this information, we are able to have semiglobal non-realtime network information to choose the optimal routing path. Though simulation, it has shown that the proposed mechanism outperforms PSR in terms of initial delay and energy.
Building Telephony Systems with OpenSER: A step-by-step guide to building a high performance Telephony System
Authors: Flavio E. Goncalves
Venue:  (2008)

This book teaches how to develop a fast and flexible Session Initiation Protocol (SIP) server using OpenSER and shows how OpenSER can be used to implement features not available in Asterisk PBX. This book is for readers who want to understand how to build a SIP provider from scratch using OpenSER. Telephony and Linux experience will be helpful but is not essential. Readers need not have prior knowledge of OpenSER.
RANC: Relay-aided network coding in multi-hop wireless networks
Authors: Xiaowen Zhang, Hao Zhu, Jinsong Zhang
Venue: Computer Communications (2009)

This paper proposes a relay-aided network coding (RANC) scheme that considers how to improve the performance gain of network coding by exploiting the physical layer multi-rate capability in multi-hop wireless networks. In RANC, nodes are allowed to transmit at different rates according to the channel condition. Different from the recently proposed opportunistic overhearing and coding schemes by COPE [S. Katti, H. Rahul, W. Hu, D. Katabi, M. Medard, J. Crowcroft, XORs in the air: practical wireless network coding, in: Proc. of ACM SIGCOMM'06, September 2006.], each node may either send its own packet or relay the packets received from its neighbors in form of a coded packet. Since the relayed packets can usually be transmitted at a high rate, the total packets that are necessary for decoding can be delivered to each destination node much faster than direct transmissions. We conduct rigorous analysis to find the design principles and study the tradeoff in the performance gain of RANC. Based on the analytical results, we provide a practical solution by decomposing the original design problem into two sub-problems, which are the flow partition problem and the scheduling problem. The performance of RANC is also evaluated via simulations. The simulation results show that, compared to COPE, RANC can significantly improve the performance gain of network coding.
Matrix: adaptive middleware for distributed multiplayer games
Authors: Rajesh Krishna Balan, Maria Ebling, Paul Castro, Archan Misra
Venue: Proceedings of the ACM/IFIP/USENIX 2005 International Conference on Middleware (2005)

Building a distributed middleware infrastructure that provides the low latency required for massively multiplayer games while still maintaining consistency is non-trivial. Previous attempts have used static partitioning or client-based peer-to-peer techniques that do not scale well to a large number of players, perform poorly under dynamic workloads or hotspots, and impose significant programming burdens on game developers. We show that it is possible to build a scalable distributed system, called Matrix, that is easily usable by game developers. We show experimentally that Matrix provides good performance, especially when hotspots occur.
Applying the imprecise Dirichlet model in cases with partial observations and dependencies in failure data
Authors: Matthias C. M. Troffaes, Frank P. A. Coolen
Venue: International Journal of Approximate Reasoning (2009)

Imprecise probabilistic methods in reliability provide exciting opportunities for dealing with partial observations and incomplete knowledge on dependencies in failure data. In this paper, we explore the use of the imprecise Dirichlet model for dealing with such information, and we derive both exact results and bounds which enable analytical investigations. However, we only consider a very basic two-component system, as analytical solutions for larger systems will become very complex. We explain how the results are related to similar analyses under data selection or reporting bias, and we discuss some challenges for future research.
It's not what you know, but who you know: a social approach to last-resort authentication
Authors: Stuart Schechter, Serge Egelman, Robert W. Reeder
Venue: Proceedings of the 27th international conference on Human factors in computing systems (2009)

Backup authentication mechanisms help users who have forgotten their passwords regain access to their accounts-or at least try. Today's systems fall short in meeting both security and reliability requirements. We designed, built, and tested a new backup authentication system that employs a social-authentication mechanism. The system employs trustees previously appointed by the account holder to verify the account holder's identity. We ran three experiments to determine whether the system could (1) reliably authenticate account holders, (2) resist email attacks that target trustees by impersonating account holders, and (3) resist phone-based attacks from individuals close to account holders. Results were encouraging: seventeen of the nineteen participants who made the effort to call trustees authenticated successfully. However, we also found that users must be reminded of who their trustees are. While email-based attacks were largely unsuccessful, stronger countermeasures will be required to counter highly-personalized phone-based attacks.
Unified media functions for mobile multimedia devices
Authors: Timo-Pekka Viljamaa
Venue: Proceedings of the International Conference on Mobile Technology, Applications, and Systems (2008)

In this paper we present research results from the three design and evaluation rounds for creating unified media functions set for mobile multimedia devices. The aim of the unified media functions is to provide a set of media functions consisting from playback control, media functions and media switching states that would work similarly for different media type. Our research results look promising for providing unified functions for different media types and also the proposed set has proved to be future proof for new mobile media types, social media aspects and new UI styles.
The new perspective of consilience of arts and technology in the era of ubiquitous computing
Authors: Se-hyung Park
Venue: ACM SIGGRAPH ASIA 2008 educators programme (2008)

K'ARTS, established in 1993 as a state-run arts school under the wing of Ministry of Culture, Sports and Tourism, produced remarkable achievements by establishing a composite artistic education system, focused on creative activities across six genres of arts in ten years. Based on such achievements, it is now actively developing a new genre-encompassing model of education in arts based on the consilience of arts, liberal arts-social science and science-technology to foster experts in arts projects who can lead the creative convergence of knowledge in different fields in the ubiquitous era.
Short Communication: Cryptanalysis of a mutual authentication scheme based on nonce and smart cards
Authors: Da-Zhi Sun, Jin-Peng Huai, Ji-Zhou Sun, Jian-Xin Li
Venue: Computer Communications (2009)

To prevent the forged login attacks, Liu et al. recently proposed a new mutual authentication scheme using smart cards. However, we demonstrate that the attacker without any secret information can successfully not only impersonate any user to cheat the server but also impersonate the server to cheat any user. That is, Liu et al.'s scheme fails to defend the forged login attack as the previous version. Our cryptanalysis result is important for security engineers, who are responsible for the design and development of smart card-based user authentication systems.