ppxscal/embedding_network huggingface dataset:
Privacy Protected ELF for Private Computing on Public Platforms
Authors: Thomas H. Morris, V. S. S. Nair
Venue: Proceedings of the 2008 Third International Conference on Availability, Reliability and Security (2008)

Private Computing on Public Platforms (PCPP) is a new technology designed to enable secure and private execution of applications on remote potentially hostile public platforms. PCPP uses a host assessment to validate a host’s hardware and software configuration and then uses 4 active security building blocks which together allow an application to remain unaltered, unmonitored, and unrecorded before, during, and after execution on the public platform. Privacy Protected ELF (PPELF) is the building block used by PCPP to protect application executable code while it is stored on the public platform and to provide a secure binary load mechanism. PPELF is an encrypted binary executable format and methodology which uses just in time decryption during the executable load procedure. In this paper we describe the PPELF file format, our new PPELF binary format loader, and our updates to the GLIBC ELF interpreter to support PPELF. We also provide experimental results detailing the initial load-time and run-time penalty associated with the use of PPELF.
Federated clusters using the transparent remote Execution (TREx) environment
Authors: Richert Wang, Enrique Cauich, Isaac D. Scherson
Venue: Proceedings of the 13th International Conference on Parallel and Distributed Systems - Volume 02 (2007)

Due to the increasing complexity of scientific models, large-scale simulation tools often require a critical amount of computational power to produce results in a reasonable amount of time. For example, multi-system wireless network simulations involve complex algorithms of traffic balancing and communication control on large geographical areas. Moreover many of these intensive applications are designed for single sequential machines and large sums of money are spent on purchasing powerful servers that can give results in a satisfactory amount of time.The aim of this paper is to introduce a general-purpose tool, dubbed Transparent Remote Execution (TREx), which avoids resorting to expensive servers by providing a cost effective, high performance, distributed solution. TREx is a daemon that dynamically exploits idle operational in-use workstations. Based on elaborate rules of computational resource management, this daemon permits a master to scan workstations within a predefined subnetwork and share the workload among the least occupied processing elements. It also provides a clear framework for parallelization that applications can exploit. By providing a simple way of federating computational resources, such a framework could drastically reduce hardware investments.
Numerical solution of a fuzzy system of linear equations with polynomial parametric form
Authors: Majid Amirfakhrian
Venue: International Journal of Computer Mathematics (2007)

A systems of linear equations are used in many fields of science and industry, such as control theory and image processing, and solving a fuzzy linear system of equations is now a necessity. In this work we try to solve a fuzzy system of linear equations having fuzzy coefficients and crisp variables using a polynomial parametric form of fuzzy numbers.
Power control and channel allocation for real-time applications in cellular networks
Authors: Xiaochen Li, Dapeng Wu
Venue: Wireless Communications Mobile Computing (2008)

The next-generation packet-based wireless cellular network will provide real-time services for delay-sensitive applications. To make the next-generation cellular network successful, it is critical that the network utilizes the resource efficiently while satisfying quality of service (QoS) requirements of real-time users. In this paper, we consider the problem of power control and dynamic channel allocation for the downlink of a multi-channel, multi-user wireless cellular network. We assume that the transmitter (the base-station) has the perfect knowledge of the channel gain. At each transmission slot, a scheduler allots the transmission power and channel access for all the users based on the instantaneous channel gains and QoS requirements of users. We propose three schemes for power control and dynamic channel allocation, which utilize multi-user diversity and frequency diversity. Our results show that compared to the benchmark scheme, which does not utilize multi-user diversity and power control, our proposed schemes substantially reduce the resource usage while explicitly guaranteeing the users' QoS requirements. Copyright &copy; 2007 John Wiley & Sons, Ltd.
Motion estimation based color transfer and its application to color video compression
Authors: Ritwik Kumar, Suman K. Mitra
Venue: Pattern Analysis Applications (2008)

In this paper a novel scheme for color video compression using color transfer technique is proposed. Towards this, a new color transfer mechanism for video using motion estimation is presented. Encoder and decoder architectures for the proposed compression scheme are also presented. In this scheme, compression is achieved by firstly discarding chrominance information for all but selected reference frames and then using motion prediction and discrete cosine transform (DCT) based quantization. At decompression stage, the luminance-only frames are colored using chrominance information from the reference frames applying the proposed color transfer technique. To integrate color transfer mechanism with hybrid compression scheme a new color transfer protocol is defined. Both compression scheme and color transfer work in YCbCr color space.
Analytical estimation of error in flank milling of ruled surfaces
Authors: Johanna Senatore, Yann Landon, Walter Rubio
Venue: Computer-Aided Design (2008)

This article introduces a method to estimate geometric error during flank milling of a ruled surface. The various positioning schemes developed by researchers are intended to reduce this geometric error in order to mill with larger sized milling cutters while respecting the tolerance interval. There are two trends in positioning: either positioning is simple and right from the start it is easy to determine design of the maximum allowed milling cutter radius, or positioning is complex and determination of the maximum milling cutter dimensions can only be conducted after digital calculations of the error. It will then be necessary to choose another milling cutter radius and recommence the positioning procedure and error calculation in order to validate the tool. In the present study, a method to estimate error in the scope of complex positioning is presented. The aim is to be capable of choosing a maximum cutting tool radius that respects the tolerance interval.
Non-linear perspective widgets for creating multiple-view images
Authors: Nisha Sudarsanam, Cindy Grimm, Karan Singh
Venue: Proceedings of the 6th international symposium on Non-photorealistic animation and rendering (2008)

Viewing data sampled on complicated geometry, such as a helix or a torus, is hard because a single camera view can only encompass a part of the object. Either multiple views or non-linear projection can be used to expose more of the object in a single view, however, specifying such views is challenging because of the large number of parameters involved. We show that a small set of versatile widgets can be used to quickly and simply specify a wide variety of such views. These widgets are built on top of a general framework that in turn encapsulates a variety of complicated camera placement issues into a more natural set of parameters, making the specification of new widgets, or combining multiple widgets, simpler. This framework is entirely view-based and leaves intact the underlying geometry of the dataset, making it applicable to a wide range of data types.
Hybrid EB-writing technique with 100kV-SB and 50kV-VSB writers: Use of the former for outlines and the latter for bodies after pattern data splitting
Authors: Hiroshi Fujita, Mikio Ishikawa, Naoko Kuwahara, Masaharu Fukuda, Masashi Sakaki, Tadahiko Takikawa, Hisatake Sano, Morihisa Hoga, Naoya Hayashi
Venue: Microelectronic Engineering (2008)

A new technique of hybrid use of a 100kV-SB (spot beam) EB writer and a 50kV-VSB (variable shaped beam) EB writer, based on an outline-and-body method, is proposed and examined for making nano-imprint molds. Here an original layer is split into an outline layer and a body layer, which the 100kV writer and the 50kV writer, respectively, take care of. This outline-and-body method is compared with a normal method (using only the 100kV writer) in terms of CD linearity, pattern fidelity, and writing time. The CD linearity is similar. The pattern fidelity is satisfactory because no disconnected, shortened, or largely distorted features of the resist pattern are observed. A silicon mold with two layers of a 36nm-rule logic/gate circuit was fabricated. The writing time for the 100kV writer was reduced by 34%-64%. In conclusion, the outline-and-body method is effective to reduce the writing time without sacrificing fidelity.
A framework for mobile context-based messaging applications
Authors: Antti Nummiaho, Timo Laakko
Venue: Proceedings of the 4th international conference on mobile technology, applications, and systems and the 1st international symposium on Computer human interaction in mobile technology (2007)

In this paper, a framework for mobile context-based messaging applications is presented. The framework provides a way to create messaging applications easily and efficiently by allowing applications to be defined via XML documents. The application framework was implemented using Java programming language. It supports applications that have different categories from which users can search messages based on different context and content criteria and to which users can send messages containing any multimedia elements. Currently supported context criteria are location and time, and the only currently supported content criterion is the words contained in the messages. Possible applications include reporting and discussing problems of public spaces, rating public services, and selling second-hand products. The main benefit for the users is that it is easy to switch between applications that use the same framework since the applications share a similar look and feel.
Technical communique: On the disturbance response and external stability of a saturating static-feedback-controlled double integrator
Authors: Zheng Wen, Sandip Roy, Ali Saberi
Venue: Automatica (Journal of IFAC) (2008)

In this note, we identify a broad class of small but non-vanishing disturbances for which the state of a saturating static-feedback-controlled double integrator remains bounded.
RBAC administration in distributed systems
Authors: M.A.C. Dekker, J. Crampton, S. Etalle
Venue: Proceedings of the 13th ACM symposium on Access control models and technologies (2008)

Large and distributed access control systems are increasingly common, for example in health care. In such settings, access control policies may become very complex, thus complicating correct and efficient adminstration of the access control system. Despite being one of the most widely used access control standards, RBAC does not include an administration model for distributed systems. In this paper we fill this gap. We present a model for the administration of RBAC in a distributed system and propose an administration procedure supporting the principle that different systems protect different sets of objects. We demonstrate that our procedure fulfills the formal requirements deriving from safety and availability, and we show how it can be translated to a practical implementation. Finally, we show how our model can be extended with multiple decentralized administrative systems.
Dynamically Reconfigurable Instruction Set for Software Radio Encoding/Coding
Authors: Tian Hangpei, Gao Deyuan, Wang Deli, Zhu Yian, Zhang Shengbing, Wang Jing
Venue: Proceedings of the 2008 International Conference on Multimedia and Ubiquitous Engineering (2008)

Software Radio, considered as a new technology for wireless communication area, implements various communication standards on a uniform hardware bymoving calculational tasks onto Digital Signal Processor (DSP). As a result, demanding for DSP’s calculational capabilities is growing and general purpose DSPs is incompetent for the works. In addition, general purpose DSPs’ power and cost are not satisfying while using in software radio. Based on researching various kinds of arithmetic together, this article presents a novel dynamically reconfigurable instruction set for software radio encoding and coding. The application-specific system supplies high computational performance. The instruction set economizes area and reduces power consumption by dynamic reconfiguration. The system is aimed at satisfying requirements of software radio.
ProDA: An End-to-End Wavelet-Based OLAP System for Massive Datasets
Authors: Cyrus Shahabi, Mehrdad Jahangiri, Farnoush Banaei-Kashani
Venue: Computer (2008)

ProDA employs wavelets to support exact, approximate, and progressive OLAP queries on large multidimensional datasets, while keeping update costs relatively low. ProDA not only supports online execution of ad hoc analytical queries on massive datasets, but also extends the set of supported analytical queries to include the entire family of polynomial aggregate queries as well as the new class of plot queries.
Procedural Methods for Urban Modeling
Authors: Benjamin Watson, Peter Wonka
Venue: IEEE Computer Graphics and Applications (2008)

Simulation of our man-made environment, especially cities, is becoming an increasingly important research problem in computer graphics. This special issue captures a good snapshot of work in this emerging area.
Netkit: easy emulation of complex networks on inexpensive hardware
Authors: Maurizio Pizzonia, Massimo Rimondini
Venue: Proceedings of the 4th International Conference on Testbeds and research infrastructures for the development of networks & communities (2008)

Network emulators are software environments that closely reproduce the functionalities and the behavior of real world networks. In this paper we describe Netkit, a freely available lightweight network emulator based on User-Mode Linux. Netkit allows users to experiment with a large number of network technologies and provides tools for a straightforward setup of complex network scenarios that can be easily distributed via email or published on the Web. Netkit also comes with a set of ready to use experiences, accompanied by lecture slides, that enable users to immediately experiment with specific case studies. Our system has proved itself to be helpful in testing the configuration of ISP-scale real world networks and is profitably used within University level networking courses. We provide a detailed comparison against other competing solutions and experimental measures about the scalability of the system.
Swarm robotics and minimalism
Authors: Amanda J. C. Sharkey
Venue: Connection Science (2007)

Swarm Robotics (SR) is closely related to Swarm Intelligence, and both were initially inspired by studies of social insects. Their guiding principles are based on their biological inspiration and take the form of an emphasis on decentralized local control and communication. Earlier studies went a step further in emphasizing the use of simple reactive robots that only communicate indirectly through the environment. More recently SR studies have moved beyond these constraints to explore the use of non-reactive robots that communicate directly, and that can learn and represent their environment. There is no clear agreement in the literature about how far such extensions of the original principles could go. Should there be any limitations on the individual abilities of the robots used in SR studies? Should knowledge of the capabilities of social insects lead to constraints on the capabilities of individual robots in SR studies? There is a lack of explicit discussion of such questions, and researchers have adopted a variety of constraints for a variety of reasons. A simple taxonomy of swarm robotics is presented here with the aim of addressing and clarifying these questions. The taxonomy distinguishes subareas of SR based on the emphases and justifications for minimalism and individual simplicity.
Microsoft Excel 2007 Quick Source Guide
Authors: Quick Source
Venue:  (2007)

Do you need an easy-to-follow software reference right at your fingertips? Our 6 page, tri-fold guides are the answer. These quick reference guides include step by step instructions to help users to learn software features more quickly, as well as full color screen graphics to highlight important features. Quick Source reference guides also include the software program s NEW features and gives you quick access to time saving shortcuts. The Microsoft Excel 2007 Quick Source guide is a clear and concise tool for learning the features in Excel 2007. Features contained in this guide include NEW features such as Using the Ribbon, Customizing the Quick Access Toolbar, Using the Function Library, and Using the Zoom Slider. It also includes Creating a New Blank Workbook, Inserting a Worksheet, Selecting Rows or Columns, Selecting Cells, Entering Data, Creating a Formula, Changing the Workbook View, and much more.
Innovations to extend CMOS nano-transistors to the limit
Authors: Tahir Ghani
Venue: Proceeding of the 13th international symposium on Low power electronics and design (2008)

The scaling of CMOS technology has led to phenomenal growth in transistor density and performance during the last three decades. However, starting at 90nm CMOS node, the industry started to experience significant barriers in achieving historical transistor performance gains through traditional dimensional scaling. Fortunately, the industry has responded positively to this challenge by implementing many innovations in device structure and materials to overcome traditional scaling barriers. Intel has been at the forefront in addressing these challenges by successfully driving transistor innovations from research phase to mainstream CMOS manufacturing. Implementation of uniaxial strained-silicon transistors at the 90nm node and the recently announced "HiK+Metal Gate" transistors for the 45nm node are two excellent examples of major innovations which have demonstrated dramatic performance enhancement. After a brief review highlighting the dramatic performance benefits demonstrated with uniaxial strained silicon technology, I will describe process details and present significant performance gains achieved with "HiK+Metal Gate" transistor technology for 45nm CMOS node. Finally, I will discuss the role of increasing power density and transistor parasitics in limiting future CMOS transistor scaling and describe potential new transistor structure and material innovations required to meet performance/power/density improvements beyond 45nm CMOS node. The convergence of new transistor structure and materials will be critical for successfully scaling CMOS transistors through next decade.
Novel Algorithm for Distortion Correction of Image Intensifier in X-ray Angiography System
Authors: Yingchao Li, Yongtian Wang, Jian Yang, Yanhui Li
Venue: Proceedings of the 2008 International Conference on BioMedical Engineering and Informatics - Volume 02 (2008)

The distortion model of the image intensifier in an X-ray angiography system is complicated because it is different for images acquired in different orientations. We proposed a new method for distortion calculation based on grid phantom, and a novel approach for distortion correction. Through analyzing the distortion in several sampled orientations, a correction model is built, which reflects the relationship between the distortion and orientations, and therefore can be used to correct the distortion of images acquired in arbitrary orientations. Experiments are carried out to evaluate the accuracy, which show that the proposed algorithm is effective and efficient for distortion correction of X-ray angiography images and can be used in real-time applications.
Emergent properties: detection of the node-capture attack in mobile wireless sensor networks
Authors: Mauro Conti, Roberto Di Pietro, Luigi Vincenzo Mancini, Alessandro Mei
Venue: Proceedings of the first ACM conference on Wireless network security (2008)

One of the most vexing problems in wireless sensor network security is the node capture attack. An adversary can capture a node from the network as the first step for further different types of attacks. For example, the adversary can collect all the cryptographic material stored in the node. Also, the node can be reprogrammed and re-deployed in the network in order to perform malicious activities. To the best of our knowledge no distributed solution has been proposed to detect a node capture in a mobile wireless sensor network. In this paper we propose an efficient and distributed solution to this problem leveraging emergent properties of mobile wireless sensor networks. In particular, we introduce two solutions: SDD, that does not require explicit information exchange between the nodes during the local detection, and CCD, a more sophisticated protocol that uses local node cooperation in addition to mobility to greatly improve performance. We also introduce a benchmark to compare these solutions with. Experimental results demonstrate the feasibility of our proposal. For instance, while the benchmark requires about 9,000 seconds to detect node captures, CDD requires less than 2,000 seconds. These results support our intuition that node mobility, in conjunction with a limited amount of local cooperation, can be used to detect emergent global properties.
Human face recognition using volume feature, fuzzy c-means and membership matching score
Authors: Supawee Makdee, Chom Kimpan, Seri Pansang
Venue: Proceedings of the 5th WSEAS International Conference on Computational Intelligence, Man-Machine Systems and Cybernetics (2006)

This study tends to propose the process of nose tip volume which is applied in face image recognition. Range image face database (RIFD) used in this face recognition is based on 3-D graphics database. For this advantage, we could solve scale, center and pose error problem by using geometric transform. Nose tip is assigned as the center to find volume feature. RIFD was transformed to the gradient face model for matching using the fuzzy membership adjusted by fuzzy c-means. The propose method was tested using facial range image from 130 people with normal facial expression. The output of the detection and recognition system has to be accurate for more than 80 percent and the processing time of the recognition system has to be better than [1-2] by the speeding up to 20 times.
User survey on context-aware communication scenarios
Authors: Antti Nummiaho
Venue: Proceedings of the 4th international conference on mobile technology, applications, and systems and the 1st international symposium on Computer human interaction in mobile technology (2007)

This paper discusses context-aware communication which can be defined as the class of applications that apply knowledge of people's context to reduce communication barriers. The scope is restricted to non-verbal and electronic communication, which include, e.g., SMS and MMS messages. Based on a literature study of previous research, thirteen different scenarios that arise from this context are recognized. These scenarios are evaluated with 48 users using a questionnaire. Results indicate user preferences and provide many practical examples of utilizing the scenarios. Furthermore, the results are summarised to provide practical guidelines for the creation of context-aware communication applications.
Hamiltonian decompositions of strong products
Authors: Cong Fan, Jiuqiang Liu
Venue: Journal of Graph Theory (1998)

It is shown that if both G1 and G2 are Hamiltonian decomposable, then so is their strong product. &copy; 1998 John Wiley & Sons, Inc. J. Graph Theory 29: 45&ndash;55, 1998