ppxscal/embedding_network huggingface dataset:
A study of Java object demographics
Authors: Richard E. Jones, Chris Ryder
Venue: Proceedings of the 7th international symposium on Memory management (2008)

Researchers have long strived to exploit program behaviour in order to improve garbage collection efficiency. For example, by using a simple heuristic, generational GC manages short-lived objects well, although longer-lived objects will still be promoted to an older generation and may be processed repeatedly thereafter. In this paper, we provide a detailed study of Java object lifetimes which reveals a richer landscape than the generational view offers. Allocation site has been claimed to be a good predictor for object lifetime, but we show that object lifetime can be categorised more precisely than 'short-lived/long-lived/immortal'. We show that (i) sites allocate objects with lifetimes in only a small number of narrow ranges, and (ii) sites cluster strongly with respect to the lifetime distributions of the objects they allocate. Furthermore, (iii) these clusterings are robust against the size of the input given to the program and (iv) are likely to allocate objects that are live only in particular phases of the program's execution. Finally, we show that, in contrast to previous studies, (v) allocation site alone is not always sufficient as a predictor of object lifetime distribution but one further level of stack context suffices.
Quantitative evaluation of intra-aortic flow disturbance by the fluid momentum index: Effect of the left ventricular systolic function on the hemodynamics in the aorta
Authors: Masanori Nakamura, Shigeo Wada, Takami Yamaguchi
Venue: Technology and Health Care (2007)

The combined hemodynamics in the left ventricle and aorta were analyzed numerically to investigate how the hemodynamics in the aorta varies with changes in left ventricular systolic function quantified as the ejection fraction (EF). EFs of 0.3, 0.5, and 0.7 were defined by controlling the total volume ejected during systole, while maintaining the ventricular volume at the end of diastole. The results showed that although the variation in left ventricular systolic function resulted in a change in the magnitude of the flow velocity, the intraventricular and aortic flows, including the secondary flows at the aortic valve orifice, were essentially the same regardless of the EF. To evaluate the strength of the secondary flow relative to the axial flow, the flow momentum index, FMI, was proposed. Spatiotemporal maps of the FMI obtained with different EFs had similar topological patterns, suggesting that the left ventricular systolic function contributed less to the efficiency of conveying blood in the axial direction in the aorta. Systolic function had a minimal effect on the spatiotemporal distribution of the maximum wall shear stress (WSS). A comparison of the spatiotemporal maps of the FMI and WSS revealed that the spatiotemporal maximum of WSS that occur in peak systole did not correspond to that of the FMI, demonstrating that the spatiotemporal maximum WSS was not induced by the helical flow. These results demonstrated that the left ventricular systolic function is not reflected in the global hemodynamics in the aorta and addressed potential of the FMI as an index to quantify the aortic flow disturbances.
Conceptual Modeling for Moving Objects Database Applications
Authors: Peiquan Jin, Shouhong Wan, Lihua Yue
Venue: Proceedings of the The Ninth International Conference on Mobile Data Management (2008)

In this paper, we present a CASE tool supporting conceptual modeling for moving objects database applications, which is called STXER (Spatio-Temporal eXtended Entity-Relational model). The main purpose of STXER is to support the database design for moving objects applications on typical object-relational DBMS. The STXER tool enhances the traditional ER model with moving characteristics. It can express rich spatiotemporal semantics for moving objects applications. After an overview of the general features of STXER, we discuss the architecture of STXER. And finally, a case study of STXER’s demonstration is presented.
An XML document transformation algorithm inferred from an edit script between DTDs
Authors: Nobutaka Suzuki, Yuji Fukushima
Venue: Proceedings of the nineteenth conference on Australasian database - Volume 75 (2008)

Finding an appropriate data transformation between two schemas has been an important problem. In this paper, assuming that an edit script between original and updated DTDs is available, we consider inferring a transformation algorithm, which transforms each document valid against the original DTD into a document valid against the updated DTD, from the original DTD and the edit script. We rst show a transformation algorithm inferred from a DTD and an edit script. We next show a su cient condition under which the transformation algorithm inferred from a DTD D and an edit script is unambiguous, i.e., for any document valid against D, elements to be deleted/inserted can unambiguously be determined. Finally, we show a polynomial-time algorithm for testing the su cient condition.
How do normals move during prolonged wheelchair-sitting?
Authors: E. Linder-Ganz, M. Scheinowitz, Z. Yizhar, S. S. Margulies, A. Gefen
Venue: Technology and Health Care (2007)

The clinical practice for minimizing the risk of pressure sores (PS) is to relief pressures under bony prominences of immobilized patients by changing their postures frequently. The US Department of Health advises to relief sitting pressures at least every 1 hour, and every 15 minutes for individuals who are body-abled. Surprisingly, there is paucity of information in the literature concerning motion of healthy subjects during prolonged sitting, which can be compared with these recommendations. Considering that healthy individuals are able to sit for hours without suffering injuries, such information seems particularly important. Accordingly, our objective was to measure frequency of postural changes and extent of motion during postural changes among healthy subjects who sit in a wheelchair (N=10), in order to provide information that is missing in the literature of PS biomechanics. Subjects were asked to sit comfortably for 90 minutes, during which their trunk's frontal and sagittal motions and sitting pressures were measured. We found that normals change their posture every 9 &plusmn; 6 minutes in the sagittal plane, and independently, every 6 &plusmn; 2 minutes in the frontal plane. Shoulders, thoracic-spine and lumbar-spine frontal plane motions were 8 &plusmn; 4&deg;, 14 &plusmn; 7&deg; and 15 &plusmn; 7&deg;, respectively, and sagittal trunk-thigh movement was 10.3 &plusmn; 7&deg;. The frequency of postural changes in normals, measured herein, was higher than frequencies reported in the literature for patients who suffered PS. This small study population therefore supports the hypothesis that prolonged immobilization contributes to PS onset.
Appropriate similarity measures for author co-citation analysis
Authors: Nees Jan van Eck, Ludo Waltman
Venue: Journal of the American Society for Information Science and Technology (2008)

We provide in this article a number of new insights into the methodological discussion about author co-citation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors' co-citation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. We show by means of an example that the choice of an appropriate similarity measure has a high practical relevance. Finally, we discuss the use of similarity measures for statistical inference. &copy; 2008 Wiley Periodicals, Inc.
Perception-oriented online news extraction
Authors: Jinlin Chen, Keli Xiao
Venue: Proceedings of the 8th ACM/IEEE-CS joint conference on Digital libraries (2008)

A novel online news extraction approach based on human perception is presented in this paper. The approach simulates how a human perceives and identifies online news content. It first detects news areas based on content function, space continuity, and formatting continuity of news information. It further identifies detailed news content based on the position, format, and semantic of detected news areas. Experiment results show that our approach achieves much better performance (in average more than 99% in terms of F1 Value) compared to previous approaches such as Tree Edit Distance and Visual Wrapper based approaches. Furthermore, our approach does not assume the existence of Web templates in the tested Web pages as required by Tree Edit Distance based approach, nor does it need training sets as required in Visual Wrapper based approach. The success of our approach demonstrates the strength of the perception-oriented Web information extraction methodology and represents a promising approach for automatic information extraction from sources with presentation design for humans.
Using mobile agents for temporary disconnection from wireless network
Authors: Zeida M. Solarte, Alexander Garcia Dávalos, Matthias Kreil
Venue: Proceedings of the 2007 Euro American conference on Telematics and information systems (2007)

The disconnection from wireless network is one of the most critical problems that mobile users have to face in mobile computing environment. The mobile agent technology facilitates the realization of operations in an asynchronous way and has been used in e-commerce, semantic web searches and networks management. This paper presents a new software architecture that uses mobile agents to face the problem of temporary disconnection from wireless network and that also allows the presentation of information in different types of mobile devices using XML and XSL style sheets
PNECOS: A Peer-to-Peer Network Coding Streaming System
Authors: Tein-Yaw Chung, Chih-Cheng Wang, Yung-Mu Chen, Yang-Hui Chang
Venue: Proceedings of the 2008 IEEE International Conference on Sensor Networks, Ubiquitous, and Trustworthy Computing (sutc 2008) (2008)

Multimedia streaming service, such as IPTV and VoD, is one of killer applications in 4G network. Exploiting well resources of end hosts to extend the service scalability of a media server is a critical approach in multimedia streaming services. This paper proposes a Peer-to-peer NEtwork COding based Streaming system (PNECOS) to provide overlay multimedia streaming service. PNECOS employs the network coding technology to supply stateless and independent encoded content, efficient utilize end hosts' buffer space, and balance network traffic load and server load. Simulation results show that with network coding, the effective buffer length of peers can be extended by reducing storage spaces for coded content, and the server bandwidth consumption can be reduced.
Motion Estimation of a Mobile Robot Using Different Types of 3D Sensors
Authors: Chayakorn Netramai, Melnychuk Oleksandr, Chanin Joochim, Hubert Roth
Venue: Proceedings of the Fourth International Conference on Autonomic and Autonomous Systems (2008)

Motion estimation is one of the most important tasks for autonomous mobile robots. Modern mobile robots are equipped with different types of visual sensors that can provide wide ranges of outputs which can be used as reliable inputs for the computing of the robot's displacement. One of the widely used visual sensors on mobile robots is the stereo camera due to its simplicity and availability. However, the recently invented Photonic Mixer Device (PMD) that uses the time of flight principle, also becomes more and more popular because of its robustness against ambient light and weak textured surfaces.This paper introduces the compared results of the motion estimation using two different types of 3D sensors (stereo and PMD) and alsosuggests a new approach to fuse their data in order to improve the calculation accuracy. An experiment was conducted using a mobile robot where the motion of the robot was evaluated using a least square technique. The results from each sensor were obtained and compared to prove their capability toward the motion estimation task.
Kalpana - enabling client-side web personalization
Authors: Anupriya Ankolekar, Denny Vrandečić
Venue: Proceedings of the nineteenth ACM conference on Hypertext and hypermedia (2008)

A growing number of websites are recognizing the value of personalization based on a user's context and social network. As more websites become personalized, the resulting experience for users can be rather fragmented. We aim to facilitate a seamless Web personalization experience across websites by enabling personalization to take place at the client and thus allowing personal information about people to reside locally with people. If websites are to script a personalization experience that draws on information held by the user, it is imperative that this information be easily comprehensible by heterogeneous websites. In this paper, we demonstrate how Semantic Web technologies can be used to realize a vision of client-side Web personalization. The contribution of this paper is an architecture that demonstrates the feasibility of our approach and a prototype implementation that establishes its viability.
Developing a software package for global desktop assessment of environmental flows
Authors: V. U. Smakhtin, N. Eriyagama
Venue: Environmental Modelling Software (2008)

The paper describes a method and software package for desktop assessment of environmental flows -a hydrological regime designed to maintain a river in some agreed ecological condition. The method uses monthly flow data and is built around a flow duration curve, which ensures that elements of natural flow variability are preserved in the estimated environmental flow time series. The curve is calculated for several categories of aquatic ecosystem protection -from 'largely natural' to 'severely modified'. The corresponding environmental flows progressively reduce with the decreasing level of ecosystem protection. A non-linear data transformation procedure subsequently converts the calculated environmental flow duration curve into a continuous time series of environmental flows. The software has facilities to zoom on a river basin, calculate a variety of hydrological characteristics, define or select any category of ecosystem protection, calculate the associated environmental flow duration curves and time series and display both. The analyses can be carried out either using default (simulated) global flow data, with a spatial resolution of 0.5degree, or a user-defined file. The package is seen as a training tool for water practitioners, policymakers and students, and as a tool for rapid preliminary environmental flow assessment.
Defect classification and defect types revisited
Authors: Stefan Wagner
Venue: Proceedings of the 2008 workshop on Defects in large software systems (2008)

There have been various attempts to establish common defect classification systems in standards, academia and industry. The resulted classifications are partly similar but also contain variations and none of which is accepted as a basic tool in software projects. This position paper summarises the work on defect classifications so far, proposes a set of challenges and the direction to a solution.
Three stacks
Authors: M. L. Fredman
Venue: Proceedings of the 29th Annual Symposium on Foundations of Computer Science (1988)

The storage allocation for three stacks has been traditionally accomplished by using pointers to store the stacks as linked lists or by relocating the stacks within memory when collisions take place. The former approach requires additional space to store the pointers, and the latter approach requires additional time. The authors explore the extent to which some additional space or time is required to maintain three stacks. They provide a formal setting for this topic and establish upper and lower complexity bounds on various aspects.
Ab-initio study on parameter extraction for kinetic Monte Carlo simulation of neutral indium diffusion in uniaxially- and biaxially-strained silicon
Authors: Young-Kyu Kim, Bum-Goo Cho, Soon-Yeol Park, Taeyoung Won
Venue: Microelectronic Engineering (2008)

In this paper, we present our ab-initio study on energy configurations, minimum energy path (MEP), and migration energy for neutral indium diffusion in a uniaxial and biaxial tensile strained {100} silicon layer. Our ab-initio calculation of the electronic structure allowed us to figure out transient atomistic configurations during the indium diffusion in strained silicon. We found that the lowest-energy structure (In"S-Si"i^T^d) consists of indium sitting on a substitutional site while stabilizing a silicon self-interstitial in a nearby tetrahedral position. Our ab-initio calculation revealed that the next lowest-energy structure is In"i^T^d, the interstitial indium at the tetrahedral position. We employed the nudged elastic band (NEB) method for estimating the MEP between the two structural states. The NEB method teaches us that the diffusion pathway of neutral indium is kept unchanged in strained silicon while the migration energy of indium fluctuates in strained silicon.
Programmable Logic Gates for Optical Processing
Authors: V. Kochergin, Z. Shi, R. Ostroumov, A. Kroetch, S. Buswell, S. Evoy, R. Heflin
Venue: Proceedings of the Fifth International Conference on Information Technology: New Generations (2008)

We present the results of joint development effort between Luna Innovations, University of Alberta and Virginia Tech targeting the development of ultradense photonic integration platform based on self-assembled electro-optical polymers and nanoimprinting approach. Modeling and numerical simulations are used to design the optimized integrated optical structures and to identify performance and integration limits of our concept. Initial experimental results are provided to illustrate the current progress of the team. Discussion of possibility of achieving even higher photonic integration with plasmonic structures is illustrated with results of modeling and simulations
Imaging of Calcium Oscillation in Mouse Oocyte/zygote by Two Photon Laser Scanning Microscopy
Authors: Pengfei Wang, Jianhua Fu, Wanyun Ma, Dieyan Chen, Danyu Lv, Rui Chen, Wenjia Bai
Venue: Proceedings of the 2008 International Conference on BioMedical Engineering and Informatics - Volume 02 (2008)

Calcium is one of the most important and versatile intracellular messenger, known as “the signal of life and death”. It has been found that, at certain time in the cell cycle, there is an oscillation of and its transmission (the Calcium wave) in the cell. Some useful information can be got from this phenomenon, like the speed of metabolism and the activity of the cell, ect. Using two photon laser scanning microscopy (TPLSM) system, we observed the dynamic process of the oscillation in mouse oocyte and zygote, obtaining the accurate cycle and amplitude of the oscillation. Then we successfully applied the results to the animal model experiment on hyperglycemia mice, with comparison to that on normal ones.
Google Maps Mashups with Google Mapplets (Firstpress), 1 edition
Authors: Michael Young
Venue:  (2008)

Have a Google Maps mashup that youd like to expose to millions of users on maps.google.com? New to the mapping craze, but have an idea for a killer mapbased application? Want to learn how to create GeoRSS and KML feeds with your geotagged content, exposing your customer to new ways of exploring and navigating your content? Google Maps Mashups with Google Mapplets Is the first book to cover Googles new Mapplet technology Shows you how to create Google Mapsbased applications and publish to maps.google.com Provides a singlesource resource and practical guide to Mapplets and mashups Teaches you how to mash up Mapplets using locationspecific data Includes examples of realworld applications What youll learn Readers will be taken through the process of building a mashup of multiple data sources and APIs, using Tourfilters concert and event data to map concerts and venue information happening nearby. Creating GeoRSS and KML files will also be covered, showing readers how to publish their content with geographic metadata and encouraging their users to interact with their data in new and interesting ways. Who is this book for? This book is aimed at developers, designers, and technologists looking to explore Googles new Mapplet technology. The book will be a great resource for those just getting into Mapbased applications and mashups, as well as for seasoned Maps developers looking to reach an extended audience with their mashups on maps.google.com. Readers of the book should be familiar with JavaScript, basic HTML and CSS, PHP, and some SQL.
Object-oriented and textural image classification of the Siberia GBFM radar mosaic combined with MERIS imagery for continental scale land cover mapping
Authors: L. Durieux, J. Kropácek, G. D. de Grandi, F. Achard
Venue: International Journal of Remote Sensing (2007)

Boreal forests and wetlands play an important role in the climate system, in particular through biosphere-atmosphere flux exchanges. They are an important pool of carbon and their role as sink or source of greenhouse gases is not fully understood. Accurate mapping of the vegetation of Siberia can therefore contribute to a better understanding of these processes at regional scale and of their effects on the climate through regional biosphere modeling. The potential of the combination of radar data with medium-resolution optical data to obtain regional-scale land cover mapping is investigated using multi-spectral imagery from the MERIS sensor at 300 m resolution and a high resolution radar mosaic (pixel spacing of 100 m) covering Western and Eastern Siberia compiled in the framework of the Global Boreal Forest Mapping project. For this purpose, capabilities of oriented-object image analysis associated to wavelet multi-resolution techniques are investigated. Results show that wavelet multi-resolution textures bring relevant additional information for land cover classification. Suggestions are made for the implementation of an object-based wavelet multi-resolution texture estimator.