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Biologically-inspired path selection scheme for multipath overlay networks 多路径覆盖网络的生物学启发路径选择方案
2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies Pub Date : 2008-12-16 DOI: 10.1109/ISABEL.2008.4712596
K. Leibnitz, M. Murata, A. Nakao
{"title":"Biologically-inspired path selection scheme for multipath overlay networks","authors":"K. Leibnitz, M. Murata, A. Nakao","doi":"10.1109/ISABEL.2008.4712596","DOIUrl":"https://doi.org/10.1109/ISABEL.2008.4712596","url":null,"abstract":"In this paper we discuss the application of a biologically-inspired approach for path selection in overlay networks under the constraints of in-order packet delivery. We apply the concept of attractor selection by modeling the path selection process in multipath overlay as a stochastic dynamical system that instantaneously converges to a sufficiently good solution utilizing the system inherent noise to provide a robust and adaptive mechanism. Our method is inspired by a mathematical model for the stochastic dynamics of gene regulatory networks. Simple numerical simulations will show that this proposed method is stable to changes in the environment and adaptable to the objective function, which is in our case the buffer occupancy level of the destination node in an overlay network.","PeriodicalId":435116,"journal":{"name":"2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies","volume":"292 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120932611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A circuit method to estimate the bandwidth of transducer response with the transition band of a filter and its application in the measurement of tissue viscosity 利用滤波器的过渡带估计换能器响应带宽的电路方法及其在组织粘度测量中的应用
2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies Pub Date : 2008-12-16 DOI: 10.1109/ISABEL.2008.4712601
Jian Liu
{"title":"A circuit method to estimate the bandwidth of transducer response with the transition band of a filter and its application in the measurement of tissue viscosity","authors":"Jian Liu","doi":"10.1109/ISABEL.2008.4712601","DOIUrl":"https://doi.org/10.1109/ISABEL.2008.4712601","url":null,"abstract":"In this paper, a circuit method is proposed to estimate the resonance bandwidth of transducer. A filter is used to shift the resonant frequency with its transition band. Assuming the response of sensor is Gaussian distributed near resonant frequency, we can estimate the bandwidth of resonance from the shifted frequency. According to some findings in Quarts Crystal Microbalance (QCM) theory, the resonance bandwidth of crystal is affected by the viscosity loading. So our circuit method can be used to measure the viscosity of biological tissue. Since no DSP components are involved here for spectrum analysis, our method will be a low-cost and competitive solution for the viscosity sensing in medical application.","PeriodicalId":435116,"journal":{"name":"2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121327505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Channel model on various frequency bands for wearable Body Area Network 可穿戴体域网络各频段信道模型
2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies Pub Date : 2008-12-16 DOI: 10.1587/TRANSCOM.E92.B.418
N. Katayama, K. Takizawa, T. Aoyagi, J. Takada, Huan-Bang Li, R. Kohno
{"title":"Channel model on various frequency bands for wearable Body Area Network","authors":"N. Katayama, K. Takizawa, T. Aoyagi, J. Takada, Huan-Bang Li, R. Kohno","doi":"10.1587/TRANSCOM.E92.B.418","DOIUrl":"https://doi.org/10.1587/TRANSCOM.E92.B.418","url":null,"abstract":"Body Area Network (BAN) is considered as a promising technology in supporting medical and healthcare services by combining with various biological sensors. In this paper, we look at wearable BAN, which provides communication links among sensors on body surface. In order to design a BAN that manages biologic information with high efficiency and high reliability, the propagation characteristics of BAN must be thoroughly investigated. As a preliminary effort, we measured the propagation characteristics of BAN at frequency bands of 400 MHz, 600 MHz, 900 MHz, and 2400 MHz respectively. Channel models for wearable BAN based on the measurement results were derived. Our results show that the channel models can be described by using a path loss model for all investigated frequency bands.","PeriodicalId":435116,"journal":{"name":"2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127506078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 77
Pulse coupled oscillators’ primitives for collision-free multiple access with application to body area networks 无碰撞多址的脉冲耦合振荡器原语及其在体域网络中的应用
2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies Pub Date : 2008-12-16 DOI: 10.1109/ISABEL.2008.4712615
R. Pagliari, Y. Hong, A. Scaglione
{"title":"Pulse coupled oscillators’ primitives for collision-free multiple access with application to body area networks","authors":"R. Pagliari, Y. Hong, A. Scaglione","doi":"10.1109/ISABEL.2008.4712615","DOIUrl":"https://doi.org/10.1109/ISABEL.2008.4712615","url":null,"abstract":"This paper investigates strategies to achieve collectively coordination in sensor networks, with extremely limited complexity. We propose and compare novel backoff mechanisms to achieve adaptively the desired scheduling among a number of sensors that contend for their access to the wireless medium. The method considered models the interactions among sensors as that of pulse coupled oscillators (PCO), which have been widely studied in mathematical biology to capture the interaction among biological entities (such as neurons) and the emergence of firing patterns in their networks. Modeling our sensors as UWB pulse emitters, our interest in this paper is to discuss strategies that allow the sensors to interleave their pulsing activities in a sequence so as to provide a frame subdivision for the collision free transmissions. The bio-inspired algorithm featured is a useful network primitive for multiple access in highly scalable sensor networks, which adds on to the well known primitive for network synchronization where PCO models are popular for.","PeriodicalId":435116,"journal":{"name":"2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124863600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Context-aware services for ambient assisted living: A case-study 环境辅助生活的环境感知服务:一个案例研究
2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies Pub Date : 2008-12-16 DOI: 10.1109/ISABEL.2008.4712593
Ana Hristova, A. Bernardos, J. Casar
{"title":"Context-aware services for ambient assisted living: A case-study","authors":"Ana Hristova, A. Bernardos, J. Casar","doi":"10.1109/ISABEL.2008.4712593","DOIUrl":"https://doi.org/10.1109/ISABEL.2008.4712593","url":null,"abstract":"Ambient assisted living is a paradigm that promotes independency in the old age with the support of advanced technologies. Ambient home care systems (AHCS) are specially design for this purpose; they aim at minimizing the potential risks that living alone may suppose for an elder, thanks to their capability of gathering data of the user, inferring information about his activity and state, and taking decisions on it. In this paper, we present a number of context-aware services (heart rate monitoring, medication prompting, generation of agenda reminders, weather alerts, emergency notifications, etc.) for the elder and his caregivers. They run on the top of an AHCS, which collects data from a network of environmental, health and physical sensors. The AHCS follows a layered fusion architecture, formed by an in-home developed context acquisition framework and a context manager (customized on the Context Toolkit) that holds the inference and reasoning functionalities. On the deployed prototype, we analyze the suitability of the selected technical approach for ambient assisted living applications.","PeriodicalId":435116,"journal":{"name":"2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126084580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 57
Signal processing techniques for microwave imaging of the breast 乳房微波成像的信号处理技术
2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies Pub Date : 2008-12-16 DOI: 10.1109/ISABEL.2008.4712580
G. Pagana, S. Salvador, G. Vecchi
{"title":"Signal processing techniques for microwave imaging of the breast","authors":"G. Pagana, S. Salvador, G. Vecchi","doi":"10.1109/ISABEL.2008.4712580","DOIUrl":"https://doi.org/10.1109/ISABEL.2008.4712580","url":null,"abstract":"Microwave imaging has grown in recent years as a promising technique for breast cancer detection. Its physical principle exploits the different dielectric characteristics of normal and tumoral breast tissues. In 2007 a study evaluated the dielectric properties of normal (adipose, glandular and fibroconnective), malignant (invasive and non-invasive ductal and lobular carcinomas) and benign (fibroadenomas and cysts) breast tissue samples obtained from cancer surgeries and breast reduction. The analyses showed that the contrast in the microwave-frequency dielectric properties between malignant lesions and glandular/fibroconnective tissues in the breast is no more than 10%. It is therefore fundamental to add to the electromagnetic issues signal processing reconstruction techniques that could improve the capability to correctly reconstruct the dielectric profile of the examined tissue. In this work we present different signal processing algorithms applied on microwave imaging of a phantom of the breast, analyzing their performances in order to migrate to clinical test campaigns on patients.","PeriodicalId":435116,"journal":{"name":"2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122330170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Image information access using wedgelet filters 图像信息访问使用小波滤波器
2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies Pub Date : 2008-12-16 DOI: 10.1109/ISABEL.2008.4712614
J. García-Álvarez, German Castellanos-Dominguez, Ben-Hur Ortiz
{"title":"Image information access using wedgelet filters","authors":"J. García-Álvarez, German Castellanos-Dominguez, Ben-Hur Ortiz","doi":"10.1109/ISABEL.2008.4712614","DOIUrl":"https://doi.org/10.1109/ISABEL.2008.4712614","url":null,"abstract":"Image remote access using cache strategies has been considered, in order to improve decoding times. However, wavelet coefficients used in coding are not the optimal solution for the Rate-Distortion functional optimization. Directional wavelet filters have shown as good candidates for setting up the Lp space for edge and contour approximation of image tiling and Windows of Interest, and are analyzed here.","PeriodicalId":435116,"journal":{"name":"2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114291467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
In-vitro measurement of ventricular cerebrospinal fluid flow using particle tracking velocimetry and magnetic resonance imaging 利用粒子跟踪测速和磁共振成像技术体外测量脑脊液流量
2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies Pub Date : 2008-12-16 DOI: 10.1109/ISABEL.2008.4712622
M. Schibli, M. Wiesendanger, L. Guzzella, K. Hoyer, M. Soellinger, V. Kurtcuoglu, P. Boesiger
{"title":"In-vitro measurement of ventricular cerebrospinal fluid flow using particle tracking velocimetry and magnetic resonance imaging","authors":"M. Schibli, M. Wiesendanger, L. Guzzella, K. Hoyer, M. Soellinger, V. Kurtcuoglu, P. Boesiger","doi":"10.1109/ISABEL.2008.4712622","DOIUrl":"https://doi.org/10.1109/ISABEL.2008.4712622","url":null,"abstract":"Using in-vivo anatomical MRI scan, a scaled-up silicone model of the human ventricular system was built. A pulsatile pressure difference was applied across the aqueduct of Sylvius, and particle tracking velocimetry was used to measure the resulting three-dimensional fluid velocity distribution within the third ventricle. The obtained results were compared to velocimetric MRI scans of the same model; and show generally good agreement. A jet which emanates the aquaeduct of Sylvius is seen with both measurement methods. This jet also induces two main vortices which contribute significantly to the convective mixing of the cerebrospinal fluid. The main flow features correspond to the ones observed in a previous CFD simulation study.","PeriodicalId":435116,"journal":{"name":"2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134541691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
An evaluation of cooperation transmission considering practical energy models and passive reception 考虑实际能量模型和被动接收的合作传输评价
2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies Pub Date : 2008-12-16 DOI: 10.1109/ISABEL.2008.4712607
Jin-Woo Jung, A. Kailas, M. A. Ingram, E. Popovici
{"title":"An evaluation of cooperation transmission considering practical energy models and passive reception","authors":"Jin-Woo Jung, A. Kailas, M. A. Ingram, E. Popovici","doi":"10.1109/ISABEL.2008.4712607","DOIUrl":"https://doi.org/10.1109/ISABEL.2008.4712607","url":null,"abstract":"The total energy consumed by the radios is compared for a cooperative transmission (CT) protocol and a non-CT routing protocol, in a two-hop, single cluster, ad hoc network. The radio energy model is a function of parameter sets that are typically found in radio specifications. The protocols are compared for five different parameter sets, corresponding to five different existing radios. The CT protocol is the Opportunistic Large Array (OLA). The non-CT protocol simply selects one node from the cluster to forward the packet, but other nodes in the cluster that do not relay are assumed to overhear or decode at least part of the packets. The relative energy consumption is determined as a function of the fraction of the data packet that is decoded by the node for decision-making. CT is shown to be beneficial for certain decoding fractions and for certain radio parameter sets.","PeriodicalId":435116,"journal":{"name":"2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122374582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Experimental respiratory signal analysis based on Empirical Mode Decomposition 基于经验模态分解的实验呼吸信号分析
2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies Pub Date : 2008-12-16 DOI: 10.1109/ISABEL.2008.4712581
A. Karagiannis, L. Loizou, P. Constantinou
{"title":"Experimental respiratory signal analysis based on Empirical Mode Decomposition","authors":"A. Karagiannis, L. Loizou, P. Constantinou","doi":"10.1109/ISABEL.2008.4712581","DOIUrl":"https://doi.org/10.1109/ISABEL.2008.4712581","url":null,"abstract":"Respiration is a widely used biosignal which is combined with other biosignals in order to extract information about the physiological or pathological conditions that may occur in the development of a treatment. Acquisition of respiration in a clinical environment is usually accomplished by standard hospital equipment and minimum invasive techniques. In this paper a non invasive technique is used for respiration monitoring based on accelerometers. The acquired signal is sampled and transmitted through a wireless sensor network to the gateway point (sink) where it is processed. Empirical Mode Decomposition (EMD) is considered as a method of processing of biosignals such as respiration and the application of the decomposition method in experimental signals acquired by means of a wireless sensor network is evaluated. The processing technique covered in this paper is based on selecting the appropriate signals (IMF) in which respiration is decomposed, by their spectral characteristics that correspond to respiration.","PeriodicalId":435116,"journal":{"name":"2008 First International Symposium on Applied Sciences on Biomedical and Communication Technologies","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132883832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
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