engineering research papers pacemaker design
Design of the Pacemaker REmote Follow-up Evaluation and Review (PREFER) trial to assess the clinical value of the remote pacemaker interrogation in the
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Abstract Background: Although pacemakers are primarily used for the treatment of bradycardia, diagnostic data available in current pacemakers allow them to be also used as sophisticated, continuous monitoring devices. Easy access to these stored data may assist
Role of peer review of pacemaker implantations
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Connecticut PRO, in which a limited number of denials was docuenented, sparked several acgry letters q~ estio~ i~~ the entire process (g-13) and largely echoing the sentiments of our group. Ittarget for
Surgical management of superior vena cava syndrome following pacemaker lead infection: a case report and review of the literature
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Abstract Superior vena cava (SVC) syndrome is a known but rare complication of pacemaker lead implantation, accounting for approximately less than 0.5% of cases. Its pathophysiology is due to either infection or endothelial mechanical stress, causing
An implantable biotelemetry review: technology for a cardiac pacemaker device
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The primary goal of this paper has been to explore technology for the cardiac pacemaker device, which is one of the most common active medical implants today. The pacemaker has a genuine need for communication with the external device, both for receiving new setting
Pacemaker twiddler's syndrome: Review through a case report
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ABSTRACT Twiddler's syndrome, a rare but hazardous complication of cardiac pacemaker treatment, characterized by device malfunction due to dislodgement of cardiac leads resulting from some form of manipulation by the patient. In this report we present a case of
Cardiac Pacemaker Treatment of Heart Block in Enugu A 5-Year Review
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ABSTRACT Background: Symptomatic heart block is a treatable cardiac cause of death which occurs globally. In Nigeria it is increasingly diagnosed and treated with permanent articial cardiac pacemaker insertion and pulse generator implantation, sometimes after a
prospective review process on pacemaker implantation rates.
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Transient ishemic attacks and suspected carotid artery disease. with minor sinus pauses on monitoring (n= I) in any CWL In two eases, the approving physician was a eneral internist who was present in the t the time of the call, and the other approved by the same inte~ ist-
Anesthesia for Lithotripsy in Patients with Pacemaker Quick review
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Patients with cardiac disease presenting for noncardiac surgery pose a considerable challenge to the anesthesiologists. With the availability of better medical facility and sophisticated diagnostic methods, many patients especially of the elderly age group, are
Methods for Detecting Pacemaker Pulses in ECG Signal: A Review
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Abstract-This paper reviews some different methods for detecting the pulses created by an implanted cardiac pacemaker in the ECG signal. It includes a hardware method implemented in a Texas Instruments circuit, software method proposed by Herleikson and
More papers on design of pacemaker
VLSI Implementation of a Demand mode Dual Chamber Rate Responsive CardiacPacemaker
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Abstract This project is aimed to design a dual chamber rate responsive cardiac pacemaker, implement it in VLSI and improvise on it for real time safety critical environments. pacemaker, implement it in VLSI and improvise on it for real time safety critical environments.
Analysis of VLSI Pacemaker Designs: A review
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ABSTRACT In this paper, we have reviewed different types of intelligent control systems designs that are used to regulate the heart rate by the use of pacemaker. These system works in a closed loop way and works on the theory that the heart is powered by the
Design of the Pacemaker REmote Follow-up Evaluation and Review (PREFER) trial to assess the clinical value of the remote pacemaker interrogation in the
free download
Abstract Background: Although pacemakers are primarily used for the treatment of bradycardia, diagnostic data available in current pacemakers allow them to be also used as sophisticated, continuous monitoring devices. Easy access to these stored data may assist
Conceptual design of GaN betavoltaic battery using in cardiac pacemaker
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Abstract Pacemaker is an electronic biomedical device which stimulates and regulates or amplify the human heartbeat by delivering weak electrical pulses to the cardiac muscle at regular intervals when its natural regulating mechanisms break down. The purpose of the
3.5 Model-based Design of Pacemaker Software with Closed-loop Evaluation
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Increasing complexity of the pacemaker software leads to increasing number of potential safety issues. The state-of-the-art pacemaker evaluation is based on open-loop testing which is not able to capture all the closed-loop behaviors. Furthermore, there is no formal
Design and Analysis of A Dual Chamber Cardiac Pacemaker Using VHDL in Biomedical Application
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ABSTRACT This research paper aims at a dual-chamber pacemaker design which is being simulated using VLSI architecture in Xilinx and is being modified by changing clock cycle to provide better results as compared to other pacemaker. It follows a state machine
The Use ofthe Ventricular Paced Evoked Response in Antitachycardia Pacemaker Design
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Summary: Recent advances in sensing technology allow the recording of the evoked response within 5 ms of an applied stimulus in the ventricle. The method is currently unsuitable for the atrium. The evoked T-wave can be sensed and the stimulus to peak T-
to 75% of pacemaker patients needing an MRI during the life-time of the pacemaker, MRI-pacemaker compatibility is a significant need. A pacemaker system has been
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Device Design: The new pacemaker and leads are designed to minimize lead tip heating and induced energy on leads, which could potentially result in loss of capture and unintended stimulation/arrhythmia. The pacemaker also includes a new feature to eliminate the
access to MRI of patients with magnetic resonance-conditional pacemaker and implantable cardioverter defibrillator systems: the Really ProMRI study design.
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Background Despite the fact that magnetic resonance (MR)-conditional pacemaker and lead systems have been introduced more than 5 years ago, it is still not clear whether they have actually facilitated the access of pacemaker patients to this important diagnostic tool.
Design and Optimisation of Pacemaker Electrode using Finite Element Method
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ABSTRACT The optimised design and simulation of a pacemaker electrode has been presented in this paper for modelling of current distribution in human heart using Finite Element Method. The pacemaker electrode is placed inside the heart and helps to keep a
proton magnetometer
Advanced proton magnetometer design and its application for absolute measurements
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Abstract A new processor controlled Proton Magnetometer design and its application for an automated absolute measurement will be presented in this paper. The new design is based on an online signal processing of single period measurements of the sensor signal,
Proton Magnetometer
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Because they behave as gyroscopes, they cannot simply switch back but must precess back at the precession frequency. In doing so they set up a very weak alternating field in the bottle, and an alternating voltage is induced in the coil. This voltage falls to zero as
The Proton Magnetometer: New Tool For Archae-ologists And Treasure-Hunters
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Gernsb ack P ublishing, reproduce for personal use only called anomalies. Anomalies due to magnetic material can be detected by the proton magnetometer. Two distinct types sought by the archeologist are those produced by soil of high susceptibility in comparison with its
Construction of a Proton Magnetometer
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Abstract Proton precession magnetometer is a scalar magnetometer which is used in the total component measurement of the magnetic field. This paper describes an attempt to develop a proton precession magnetometer for the measurement of diurnal variation of
Proton magnetometer coherence.
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Abstract The results of coherence measurements of three free precession proton magnetometers are discussed,, The measuring and data proces= sing instrumentation is described The noise associated" with the instrumentation has been measured and
The Study of FID Signal Processing Algorithm of Proton Magnetometer Based on SVD
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Abstract In order to obtain useful signals and to improve the precision of frequency measurement of proton magnetometer free decay signal (FID signal), many methods had been taken to process the signal. However, many of them may be much better if they had
The Study of FID Signal Detection Technology of Proton Magnetometer Based on Prony Method?
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Abstract In order to improve the accuracy and stability of the frequency measurement of proton magnetometer free decay signal (FID signal), many methods had been taken. However, many of them may be much better if they had considered the signal detection in
The Study of Proton Magnetometer FID Signal Processing Algorithm?
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Abstract Because the frequency of the FID signal (Free Induction Decay Signal) is proportional to the strength of magnetic field, the accuracy of frequency measurement is directly related to the accuracy of magnetic field measurement. With the development of
Proton Magnetometer Signatures over Mineralized Basal Windsor Group Transects in Hants and Halifax Counties, Nova Scotia
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The Carboniferous (Mississippian) Windsor Group has been the most consistent source of economic minerals in Nova Scotia, hosting many thick deposits of evaporates mined for gypsum, limestone and salt. The basal unit of the Windsor
The Study of Proton Magnetometer Precession Signal Extraction Technology?
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Abstract In order to improve the accuracy and stability of the frequency measurement of proton magnetometer precession signal, most of existed methods had been taken. However, many of them may be much better if they had considered the signal detection in a dynamic
load balancing controller
Fuzzy based Design and tuning of distributed systems load balancing controllerfree download
Abstract The load model of the distributed systems tends to change dynamically. Hence, fast. Precise Load balancing is an essential factor in increasing distributed system operation efficiency. Lack of shared memory among independent systems, and the delays in
Openflow: Load balancing in enterprise networks using floodlight controller
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OpenFlow is a switching protocol that is based on the concept of Software Defined Networks (SDN). A switch is a computer network device that facilitates communication between connected hosts in a Local Area Network (LAN). The typical architecture of a generic
EFFICIENT LOAD BALANCING AND HIGH SECURITY IN CLOUD COMPUTING USING FUZZY LOGIC CONTROLLER
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Abstract: This work aims to find an efficient load balancing and security in cloud computing using fuzzy logic controller. Evolution of the cloud computing which are in the virtualization, parallel processing, distributed computing and web based services in between the clients
load balancing
Dynamic load balancing on web-server systems
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The overall increase in traffic on the World Wide Web causes a dis-proportionate increase in client requests to popular Web sites, especially in conjunction with special events, such as Olympic Games and the NASA Pathfinder. Site administrators constantly face the need to
Load balancing and unbalancing for power and performance in cluster-based systems
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Abstract In this paper we address power conservation for clusters of workstations or PCs, such as those that support a large number of research/teaching organizations and most Internet companies. Our approach is to develop systems that dynamically turn cluster
On-line load balancing
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General: The machine load balancing problem is defined as follows: There are n parallel machines and a number of independent tasks (jobs); the tasks arrive at arbitrary times, where each task has an associated load vector and duration. A task has to be assigned
Diffusive load-balancing policies for dynamic applications
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ABSTRACT Massively parallel architectures require decentralized and scalable system policies. The paper presents and evaluates a set of local dynamic load balancing strategies inspired by diffusion and characterized by different scopes of locality: the goal is to
An algorithm for optimal static load balancing in distributed computer systems
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Abstract-This paper proposes a load balancing algorithm that determines the optimal load for each host so as to minimize the overall mean job response time in a distributed computer system that consists of heterogeneous hosts. The algorithm is a simplified and easily
OpenFlow-based server load balancing gone wild
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Abstract Today's data centers host online services on multiple servers, with a front-end load balancer directing each client request to a particular replica. Dedicated load balancers are expensive and quickly become a single point of failure and congestion. The OpenFlow
Plug-n-Serve: Load-balancing web traffic using OpenFlow
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ABSTRACT Effective load-balancing systems for services hosted in unstructured networks need to take into account both the congestion of the network and the load on the servers. In this demonstration, we illustrate a comprehensive load-balancing solution that works well
Improved strategies for dynamic load balancing
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ABSTRACT This article investigates load balancing in highly dynamic local area networks connecting computers of different speeds. Most dynamic load-balancing techniques ignore the lag time in load-information update, and dispatch jobs immediately upon arrival
An optimal migration algorithm for dynamic load balancing
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CONCURRENCY: PRACTlCE AND EXPERIENCE Concurrency: Pract. Expat, Vol. 10(6), 467 483 (1998) An optimal migration algorithm for dynamic load balancing YF HU. RI BLAKE AND DR EMERSON Darerbury laboratory. Daresbttry. Wurringron WA4 4111), UK
Availability and load balancing in cloud computing
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Abstract. Availability of cloud systems is one of the main concerns of cloud computing. The term, availability of clouds, is mainly evaluated by ubiquity of information comparing with resource scaling. In clouds, load balancing, as a method, is applied across different data
Network processor load balancing for high-speed links
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Abstract While transmission rates already achieve speeds beyond 40 Gb/s, today's network processors are only slowly approaching 10 Gb/s. In this paper we present a load-balancing scheme that enables system designers to bridge the performance gap using multiple
Load balancing highly irregular computations with the adaptive factoring
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Abstract In heterogeneous environments, employing dynamic scheduling algorithms to improve performance of scientific applications via load balancing is essential. Presently, these algorithms require prior knowledge about workload via profiling resulting in higher
Dynamic Load-Balancing for Parallel Adaptive Unstructured Meshes.
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Abstract A parallel method for dynamic partitioning of unstructured meshes is described. The method employs a new iterative optimisation technique which both balances the workload and attempts to minimise the interprocessor communications overhead. Experiments on a
Load balancing strategies for distributed memory machines
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Abstract Load balancing in large parallel systems with distributed memory is a difficult task often influencing the overall efficiency of applications substantially. A number of efficient distributed load balancing strategies have been developed in the recent years. Although
Dynamic octree load balancing using space-filling curves
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Abstract The Zoltan dynamic load balancing library provides applications with a reusable object oriented interface to several load balancing techniques, including coordinate bisection, octree/space filling curve methods, and multilevel graph partitioners. We
Selfish load balancing
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Abstract Suppose that a set of weighted tasks shall be assigned to a set of machines with possibly different speeds such that the load is distributed evenly among the machines. In computer science, this problem is traditionally treated as an optimization problem. One of
The Design and Performance of an Adaptive CORBA Load Balancing Service
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Abstract CORBA is increasingly popular as distributed object computing middleware for systems with stringent quality of service (QoS) requirements, including scalability and dependability. One way to improve the scalability and dependability of CORBA-based
Performance Analysis of a Load Balancing Hash-Join Algorithm for a Shared Memory Multiprocessor.
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Abstract Within the last several years, there has been a growing interest in applying general multiprocessor systems to relational database query processing. Efficient parallel algorithms have been designed for the join operation but usually have a failing in that their
On the suitability of load balancing principles in heterogeneous wireless access networks
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Abstract:Initial RAT selection is a key Common RRM strategy, where users requiring service are to be efficiently allocated in the existing and available RATs. Although load balancing is a possible guiding allocation principle, sometimes it may not be convenient.
A load balancing model based on cloud partitioning for the public cloud
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Abstract: Load balancing in the cloud computing environment has an important impact on the performance. Good load balancing makes cloud computing more efficient and improves user satisfaction. This article introduces a better load balance model for the public cloud
Cloud load balancing techniques: A step towards green computing
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Abstract Cloud computing is emerging as a new paradigm of large-scale distributed computing. It is a framework for enabling convenient, on-demand network access to a shared pool of computing resources. Load balancing is one of the main challenges in
A dynamic load balancing method on a heterogeneous cluster of workstations
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The efficient usage of workstations clusters depends first of all on the distribution of the workload. The following paper introduces a method to obtain efficient load balancing for data parallel applications through dynamic data assignment and a simple priority
Dynamic Load Balancing for Parallel Volume Rendering.
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Abstract Parallel volume rendering is one of the most efficient techniques to achieve real time visualization of large datasets by distributing the data and the rendering process over a cluster of machines. However, when using level of detail techniques or when zooming on
Mesh partitioning and load-balancing for distributed memory parallel systems
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Abstract A method is outlined for optimising graph partitions which arise in mapping unstructured mesh calculations to parallel computers. The method employs a relative gain iterative technique to both evenly balance the workload and minimise the number and
An efficient adaptive load balancing service for CORBA
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Abstract CORBA is increasingly popular as distributed object computing middleware for systems with stringent quality of service (QoS) requirements, including scalability and dependability. One way to improve the scalability and dependability of CORBA-based
Load Balancing in a Cluster Computer.
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Abstract This paper proposes a load balancing algorithm for dis-tributed use of a cluster computer It uses load informa-tion including CPU queue length, CPU utilisation, memory utilisation and network traic to decide the load of each node. This algorithm is compared
Approximation algorithms for data distribution with load balancing of web servers
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Abstract Given the increasing traffic on the World Wide Web (Web), it is difficult for a single popular Web server to handle the demand from its many clients. By clustering a group of Web servers, it is possible to reduce the origin Web server's load significantly and reduce
A study of load indices for load balancing schemes
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Abstract The problem of selecting the load index or indices to be used in dynamic load balancing policies is discussed. One such index, based on a mean-value equation, is proposed, and its main characteristics investigated. The index is obtained assuming that
Dynamic load balancing strategies for parallel computers
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Abstract. This paper deals with the problem of load balancing of parallel applications. Based on the study of recent work in the area, we propose a general taxonomy for describing and classifying the growing number of different load balancing techniques. This gives a
Ant colony optimization: A solution of load balancing in cloud
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Abstract As the cloud computing is a new style of computing over internet. It has many advantages along with some crucial issues to be resolved in order to improve reliability of cloud environment. These issues are related with the load management, fault tolerance
An improved spectral load balancing method
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Abstract We describe an algorithm for the static load balancing of scientific computations that generalizes and improves upon spectral bisection. Through a novel use of multiple eigenvectors, our new spectral algorithm can divide a computation into 4 or 8 pieces at ABSTRACT The growth of online Internet services during the past decade has increased the demand for scalable and dependable distributed computing systems. These systems face high quality-of-service requirements (such as immediate response time and 24/7
BASIL: Automated IO Load Balancing Across Storage Devices.
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Abstract Live migration of virtual hard disks between storage arrays has long been possible. However, there is a dearth of online tools to perform automated virtual disk placement and IO load balancing across multiple storage arrays. This problem is quite challenging
Multiresolution load balancing in curved space: The wavelet representation
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SUMMARY A new load-balancing scheme based on a multiresolution analysis is developed for parallel particle simulations. Workloads are partitioned with a uniform 3-dimensional mesh in an adaptive curvilinear co-ordinate system which is represented by a wavelet
Synthetic workload generation for load-balancing experiments
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D ynamic Workload Generator is a facility for generating realistic and reproducible synthetic workloads for use in load-balancing experiments. For such experiments, the generated workload must not only mimic the highly dynamic resource-utilization patterns found on
Load balancing of autonomous actors over dynamic networks
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Abstract The Internet is constantly growing as a ubiquitous platform for high-performance distributed computing. In this paper, we propose a new software framework for distributed computing over large scale dynamic and heterogeneous systems. Our framework wraps
Analysis of workload and load balancing issues in the NCAR Community Climate Model
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Abstract Choice of an appropriate strategy for balancing load in climate models running on parallel processors depends on the nature and size of inherent imbalances. Physics routines of the NCAR Community Climate Model were instrumented to produce per-cell
Load balancing for QoS enhancement in IEEE802. 11e WLANs using cell breathing techniques
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Abstract Wireless Local Area Networks (WLANs) have become increasingly popular over the last number of years. During this time, user requirements have evolved, resulting in a more diverse mix of services being carried over the radio interface. In particular, delay sensitive
A game-theoretic model and algorithm for load balancing in distributed systems
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Abstract In this paper we present a game theoretic framework for obtaining a user-optimal load balancing scheme in heterogeneous distributed systems. We formulate the static load balancing problem in heterogeneous distributed systems as a noncooperative game
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