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Fast Internet Transmission of Physiological Signals Using the Lifting Scheme and SPIHT Coding Algorithm

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Fast Internet Transmission of Physiological Signals Using th...

A WAVELET TRANSFORM BASED POCS SUPERRESOLUTION ALGORITHM

2002年第6届信号处理国际会议

作者： robert j. sclabassi Laboratory of Computational Neuroscience Department of Neurosurgery and Department of Electrical Engineering University of Pittsburgh Pittsburgh PA 15261 USA

＜正＞ - With the recent development of the information highway, the Internet is rapidly reaching maj.r medical centers, peripheral hospitals and clinics, and homes of physicians and patients. This connection provides a unique opportunity to transmit physiological data through the Internet for diagnosis, monitoring, and analysis by dedicated computers connected to the Internet. The efficient transmission of this type of data has become a significant problem. In this paper we present a multiresolution approach based on a powerful combination of the lifting scheme and the SPIHT coding algorithm. This approach enables the rate of transmission to be adapted to the receiving device so that the unnecessary portion of the data is never sent. It also allows a lossless transmission, and is capable of reconstructing essential waveforms of the data even when the network halts after a certain period of transmission.

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j.urnal of Electronics(China) 2007年第5期24卷 642-648页

作者： Bin Tian robert j. sclabassi j.nnting T. Hsu Qiang Liu Ching Chung Li Mingui Sun State Key Laboratory of Integrated Services Networks Xidian University Xi＇an 710071 China Laboratory for Computational Neuroscience University of Pittsburgh Pittsburgh PA 15260 USA Departments of Neurological Surgery Biomedical Engineering and Electrical Engineering University of Pittsburgh Pittsburgh PA 15250 USA

Research interest in multi-frame Superresolution has risen substantially in recent years. This paper presents a modified Proj.ction Onto Convex Set （POCS） superresolution method based on wavelet transform. The method analyzes the image formation model from wavelet multiresolution analysis point of view and defines an closed convex set and its corresponding proj.ction based on wavelet transform. An iterative procedure is utilized to reduce the estimated errors of the result image, and this guarantees the estimated image to lay in the intersection of different convex sets, thus produces a high resolution image with a reduced error. The effectiveness of the algorithm is demonstrated bv experimental results.

关键词： Super Resolution (SR) Wavelet transform Image resolution Image reconstruction

The Bi-Directional Spike Detection in EEG Using Mathematical Morphology and Wavelet Transform

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The Bi-Directional Spike Detection in EEG Using Mathematical...

Biological Resources within the Human Body Can be Used to Operate Neural Implants

2002年第6届信号处理国际会议

作者： robert j. sclabassi Laboratory for Computational Neuroscience Departments of Neurosurgery and Electrical Engineering University of Pittsburgh Pittsburgh PA l5261 USA

＜正＞ -Epileptic EEG often contains abnormal spiky activity which is diagnostically important. It is proposed that the multi-resolution wavelet transform with mathematical morphology can be used to detect and extract this activity. Differentiating the geometrical characteristics between spikes and normal EEG activity, the process extracts the target patterns from the EEG data in the multi-resolution domains. Morphological analysis utilizes analytic operations based on a pre-defined structuring element （SE） targeted to specific signal features. In our case the SE is defined as a disk to measure the difference in smoothness between the two components. Discrete wavelet transforms are applied to construct the processed signal. The multi-resolution property of the wavelet transform adapts well to the time-invariant nature of the signal. Combining mathematical morphology and wavelet transforms, this method successfully separates the background activity and transient phenomenon from epileptic EEG. Although the morphological operation is a non-linear process, we show that, with the selected structuring element, this approach has ability to detect both positive and negative going spikes identically.

关键词： EEG Epilepsy Mathematical Morphology Morphological Filter Spike Wavelet Transform.

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Biological Resources within the Human Body Can be Used to Op...

Necrotic enteritis and antibiotic-free production of broiler chickens:Challenges in testing and using alternative products

International Conference on Neural Interface and Control

作者： Daliang Leon Li Paul A. Roche Brian L. Wessel robert j. sclabassi Laboratory for Computational Neuroscience Departments of Neurosurgery Bioengineering and Electrical Engineering University of Pittsburgh Pittsburgh PA 15260

Implantable neural devices have many therapeutic, diagnostic, and prosthetic applications. Although there have been exciting developments in constructing these devices, two critical problems, data communication between the implanted device and external computers as well as electrical power to the device, have not yet been solved. We investigate these problems using the volume conduction properties of the human body. A prototype implantable device is constructed equipped with a volume conduction data communication channel. A new power delivery antenna is conceptualized, inspired by a study of the power delivery mechanisms of electric fish. Our investigation indicates that the volume conduction resources within the human body may provide a powerful solution to both problems.

关键词： Antenna Design data communication finite element simulation neural engineering neural implants power delivery telemetry volume conduction

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Animal Nutrition 2024年第1期16卷 288-298页

作者： robert j.Moore School of Science RMIT University

The global trend towards raising broiler chickens without the use of in-feed antibiotics(IFAs) means that there is an ongoing need to develop alternative treatments capable of delivering the benefits that IFAs previously provided. IFAs supported the productivity performance of chickens and played a key role in maintaining their health. Necrotic enteritis(NE) is an important disease of broilers that affects health,productivity, and welfare, and was previously well controlled by IFAs. However, with the reduction in IFA use, NE is resurgent in some countries. Vaccines and various feed additives, including pre-, pro-, and postbiotics, phytobiotics, fatty acids, and phage therapies have been introduced as alternative methods of NE control. While some of these feed additives have specific activity against the NE pathogen, Clostridium perfringens, most have the more general goal of reinforcing gut health. Extensive reviews of the effects of many of these feed additives on gut health have been published recently. Hence, rather than cover previously well reviewed areas of research this review focuses on the challenges and pitfalls in undertaking experimental assessment of alternative NE treatments and translating laboratory research to real world commercial production settings. The review is based on the author's particular experience,reading, thoughts, and analysis of the available information and inevitably presents a particular understanding that is likely to be at odds with others thinking on these issues. It is put forward to stimulate thinking and discussion on the issues covered.

关键词： Necrotic enteritis Clostridium perfringens Vaccines Feed additive Farm management

Glycolysis and glucose metabolism as a target for bioenergetic and neuronal protection in glaucoma

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Neural Regeneration Research 2024年第8期19卷 1637-1638页

作者： Pete A.Williams robert j.Casson Department of Clinical Neuroscience Division of Eye and VisionSt.Erik Eye HospitalKarolinska InstitutetStockholmSweden Ophthalmic Research Laboratories Discipline of Ophthalmology and Visual SciencesUniversity of AdelaideAdelaideAustralia

Vision is arguably our most valued sense,yet approximately 340 million people globally suffer blindness or moderate visual impairment,highlighting the need to further develop and advance treatments for ophthalmic *** refers to a group of ocular disorders united by a clinically characteristic optic neuropathy with associated retinal ganglion cell loss.

关键词： metabolism glaucoma globally

Does MgSO_(4) protect the preterm brain?Dissecting its role in the pathophysiology of hypoxic ischemic encephalopathy

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Neural Regeneration Research 2024年第9期19卷 1861-1862页

作者： robert Galinsky Laura Bennet Alistair j.Gunn The Ritchie Centre Hudson Institute of Medical ResearchMelbourneVICAustralia Department of Obstetrics and Gynaecology Monash UniversityMelbourneVICAustralia Department of Physiology The University of AucklandAucklandNew Zealand

Mitigating preterm encephalopathy continues to be one of the greatest challenges in perinatal *** encephalopathy is associated with high mortality,serious morbidity,and significant socio-economic impacts on the individuals,their families,and public health sectors and welfare systems that last a *** cost of disability associated with preterm brain inj.ry continues to *** of this inj.ry,and disability,would significantly reduce this socioeconomic burden.

关键词： encephalopathy mortality hypoxic

Extracellular vesicles and angiotensin-converting enzyme 2 in COVID-19 disease

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BIOCELL 2024年第1期48卷 1-8页

作者： YU LIU robert j.KASPER NATALIE j.S.CHOI Department of Family and Community Medicine Northwestern University Feinberg School of MedicineChicagoIllinois

Extracellular vesicles(EVs)are membranous vesicular structures released from almost all eukaryotic cell types under different physiological or pathological *** evidence demonstrates that EVs can serve as mediators of intercellular communication between donor and recipient cells or microorganism-infected and noninfected *** disease 2019(COVID-19)disease is caused by infection of the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)of host cells in the respiratory system and various extra-pulmonary tissue/organs,resulting in complications of multiple organ *** the cell surface receptor,angiotensin-converting enzyme 2(ACE2)mediates cellular entry of SARS-CoV-2 into the host cells in patients with *** studies have found that ACE2 can be released with EVs,which have been shown to interfere with the entry of the virus into host cells and thus may be involved in COVID-19 *** addition,ACE2,neprilysin(NEP),and thimet oligopeptidase(TOP)are the key enzymes that regulate angiotensin metabolism by converting angiotensin II or angiotensin I to angiotensin 1-7,the latter of which has protective effects in counterbalancing the harmful effects of angiotensin II in COVID-19 *** review summarizes the recent research progress regarding EV-associated ACE2,NEP,and TOP and the perspectives of their potential involvement in the pathophysiology of COVID-19 disease.

关键词： Extracellular vesicles COVID-19 Angiotensin converting enzyme 2 Thimet oligopeptidase

Weight measurement using image-based pose analysis

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Progress in Natural Science:Materials International 2008年第12期18卷 1507-1512页

作者： robert j.sclabassi Laboratory for Computational Neuroseience Departments of NeurosurgeryElectrical & Computer Engineeringand BioengineeringUniversity of PittsburghPittsburgh 15213USA

Image-based gait analysis as a means of biometric identification has attracted much research *** of the existing methods focus on human identification,posture analysis and movement *** have been few investigations on measuring the carried load based on the carrier’s gait characteristics by automatic image ***,this measurement is very useful in a number of applications,such as the study of the carried load on the postural development of children and *** this paper,we inves- tigate how to automatically estimate the carried weight from a sequence of *** present a method to extract human gait silhouette based on an observation that humans tend to minimize the energy during *** compute several angles of body leaning and deter- mine the relationship of the carried weight,the leaning angles and the centroid location according to a human kinetic *** weight determination method has been verified successfully by experiments.

关键词： Image-based pose analysis Energy minimization Pattern recognition Load carrying measurement