{"title":"Determining Sound Source Orientation from Analytical Source Directivity and Real Multi-Microphone Recordings","authors":"F. Guarato, J. Hallam, D. Vanderelst","doi":"10.1109/AT-EQUAL.2009.30","DOIUrl":"https://doi.org/10.1109/AT-EQUAL.2009.30","url":null,"abstract":"We present a method to estimate the orientation of a directional sound source and experimental results illustrating its performances. The method requires recordings captured by an array of microphones at known positions with respect to the source as well as the source directivity. Experiments have been performed in an ordinary environment by using a Polaroid transducer as the sound source emitting a broadband signal in the ultrasonic range. Such an acoustic signal has similar structure to those used by bats to echolocate. Results show that method is precise provided that the source directivity ensonifies the microphone array sufficiently. Further developments of the method, and its ultimate application to the reconstruction of emitted bat calls from remote recordings, are discussed.","PeriodicalId":407640,"journal":{"name":"2009 Advanced Technologies for Enhanced Quality of Life","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122883186","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}
{"title":"Improving the Quality of Life of People with Dementia through the Use of Socially Assistive Robots","authors":"A. Tapus","doi":"10.1109/AT-EQUAL.2009.26","DOIUrl":"https://doi.org/10.1109/AT-EQUAL.2009.26","url":null,"abstract":"In less than 25 years, 37 million people are expected to have dementia and/or Alzheimer’s disease. This significant figure is a result of several factors, including increasing life expectancy and an ageing population in developing countries. Alzheimer’s disease, a form of dementia, is a progressive brain disorder that causes memory loss, and behavior and personality changes. People suffering from this disease become increasingly physically and cognitively impaired; they usually need help with all aspects of daily living. While there is currently no cure for dementia, special therapies (e.g., arts and crafts, music therapy) can help people with dementia to live as good a life as possible. We propose to use socially assistive robots as customized/individualized helpers as a complement to humans. This work proposes a new adaptive socially assistive robotic (SAR) system that aims to provide a customized protocol through motivation, encouragement, and companionship for users suffering from cognitive changes related to aging and/or Alzheimer’s disease. The robot aims to maintain/improve the user’s cognitive attention in a cognitive music game setup.","PeriodicalId":407640,"journal":{"name":"2009 Advanced Technologies for Enhanced Quality of Life","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130613676","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}
{"title":"Goal-Directed Movement Generation with a Transient-Based Recurrent Neural Network Controller","authors":"R. F. Reinhart, Jochen J. Steil","doi":"10.1109/AT-EQUAL.2009.31","DOIUrl":"https://doi.org/10.1109/AT-EQUAL.2009.31","url":null,"abstract":"We introduce a control framework based on a recurrent neural network for goal-directed movement generation. We exploit the network dynamics to implement a nonlinear task space controller. Efficient online learning and execution of the network makes the proposed approach adaptive and real-time capable. We achieve reliable and excellent generalization for the 7-DOF redundant PA-10 robot arm in simulation.","PeriodicalId":407640,"journal":{"name":"2009 Advanced Technologies for Enhanced Quality of Life","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114631762","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}
{"title":"Use of Compliant Actuators in Robotic Applications","authors":"D. Lefeber","doi":"10.1109/AT-EQUAL.2009.15","DOIUrl":"https://doi.org/10.1109/AT-EQUAL.2009.15","url":null,"abstract":"In industrial robotics - accurate - positioning of manipulators or end effectors is by far the most common application. The system is designed to meet the high mechanical stiffness and high feedback gains required, which improves the accuracy, the stability and the bandwidth of the position control. A typical DC-drive with gearbox and conventional feedback control often suits this purpose. New robotic technologies emerge, however, in which accurate positioning or trajectory tracking is not the primary design goal or unable to compensate for the many drawbacks- from this different point of view - that comes along with conventional electrical actuators, like high reflective inertia, high stiffness, low force-to-weight ratio. These new robotic applications can strongly benefit from compliant actuator technology.","PeriodicalId":407640,"journal":{"name":"2009 Advanced Technologies for Enhanced Quality of Life","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131345018","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}
{"title":"Oxygen Availability and Self Renewal of Stem Cells","authors":"Z. Ivanovic","doi":"10.1109/AT-EQUAL.2009.24","DOIUrl":"https://doi.org/10.1109/AT-EQUAL.2009.24","url":null,"abstract":"The relationship between stem cells and micro-environmental/culture oxygenation has been reviewed. The basic principle of stem cell biology, “the generation-age hypothesis”, and hypoxic metabolic properties of stem cells are considered in the context of the oxygen-dependent evolution of life and its transposition to ontogenesis and development. A hypothesis relating the self-renewal with the anaerobic and hypoxic metabolic properties of stem cells and the actual O2 availability is elaborated (“oxygen stem cell paradigm”). The revision of our knowledge on cell/cytokine physiology, which has been acquired ex-vivo at non physiological atmospheric (20-21%) O2 concentrations representing a hyperoxic state for most primate cells, has thus become imperious for an adequate approach to cell engineering.","PeriodicalId":407640,"journal":{"name":"2009 Advanced Technologies for Enhanced Quality of Life","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125980964","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}
{"title":"Chitosan-Hydroxyapatite Composite Obtained by Biomimetic Method as New Bone Substitute","authors":"C. Tanase, Marcel I Popa, L. Verestiuc","doi":"10.1109/AT-EQUAL.2009.19","DOIUrl":"https://doi.org/10.1109/AT-EQUAL.2009.19","url":null,"abstract":"Chitosan-Hydroxyapatite (Cs-Hap) composites were prepared through a biomimetic method by Hap precipitation from its precursors, CaCl2 and NaH2PO4, on the chitosan fibres. Materials composition and structure have been analyzed by usual analytical techniques, Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). FT-IR and SEM data have shown the formation of Hap onto Cs fibers and Cs acting as glue, bonding the Hap crystals. The Cs-Hap composites porosity, from SEM data analysis, increases by increasing the content of Hap. The biodegradation of materials was tested in buffered lysozyme solution and the degraded polysaccharide was measured; the SEM data, before and after degradation, revealed that composites morphology had not appreciable changed. ‘In vitro’ degradation studies indicate that these composite have slighter degradation rate which is coupled to the degree of N-deacetylation, hydrophilicity and crystallinity. Swelling properties measurements in simulated body fluids have shown that the swelling ratio of composites is decreased when the content of Hap is higher. The obtained results revealed that obtained Cs-Hap composites are promising materials as bone substitute due to their adequate swelling properties and controlled degradation rate.","PeriodicalId":407640,"journal":{"name":"2009 Advanced Technologies for Enhanced Quality of Life","volume":"47 45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124719281","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}
{"title":"Robotically Assisted Aorto-Femoral Bypass Grafting Surgery: French Experience and Technique Description","authors":"Adrian Lobontiu, P. Desgranges, D. Loisance","doi":"10.1109/AT-EQUAL.2009.12","DOIUrl":"https://doi.org/10.1109/AT-EQUAL.2009.12","url":null,"abstract":"The da Vinci™ Surgical Robot (Intuitive Surgical Inc., Sunnyvale, CA, USA) is a computer-enhanced surgery device that helps to surpass some of traditional laparoscopic instruments limitations. Our work was performed to assess the safety and feasibility of robotically assisted aorto-femoral bypass grafting (AF) as well as to describe the technique. The aortic dissection is performed laparoscopically, with the patient in a modified right lateral position. The proximal anastomosis is completed with the da Vinci™ system by a remote surgeon, positioned at a distance from the patient. The role of the assistant at the patient’s side is especially to expose, to perform haemostasis and to maintain traction on the running sutures performed by the robot. No robot-related complications were noted. Robotically assisted anastomoses are possible by its unique ability to combine conventional laparoscopic surgery with stereoscopic 3D magnification and ultra-precise suturing techniques due to the flexibility of the robotic wristed instruments using different motion scaling of surgeon hand movements. In addition, prior training in laparoscopic aortic surgery is not necessary for surgeons to obtain the level required for suturing. Further clinical trials are needed to explore the clinical potential and value of robotically assisted AF.","PeriodicalId":407640,"journal":{"name":"2009 Advanced Technologies for Enhanced Quality of Life","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132064086","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}
{"title":"Robotic Surgery: Past Results and Current Developments","authors":"P. Fiorini","doi":"10.1109/AT-EQUAL.2009.11","DOIUrl":"https://doi.org/10.1109/AT-EQUAL.2009.11","url":null,"abstract":"In conclusion then, robotic surgery is the most promising application of telerobotic technologies to everyday life. Probably, surgical robots will open the way to new service robots in medicine, rehabilitation, assistance and personal care, and will foster, hopefully, the growth of new products and markets that will improve the quality of life of people across the world","PeriodicalId":407640,"journal":{"name":"2009 Advanced Technologies for Enhanced Quality of Life","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114769449","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}
{"title":"A Brain-Machine Interface Based on EEG: Extracted Alpha Waves Applied to Mobile Robot","authors":"M. Mahmud, D. Hawellek, Aleksander Valjamae","doi":"10.1109/AT-EQUAL.2009.17","DOIUrl":"https://doi.org/10.1109/AT-EQUAL.2009.17","url":null,"abstract":"The increasing number of signal processing tools for highly parallel neurophysiological recordings opens up new avenues for connecting technologies directly to neuronal processes. As the understanding is taking a better shape, lot more work to perform is coming up. A simple brain-machine interface may be able to reestablish the broken loop of the persons with motor dysfunction. With time the brain-machine interfacing is growing more complex due to the increased availability of instruments and processes for implementation. In this work, as a proof-of-principle we established a brain-machine interface through a few simple processes to control a robotic device using the alpha wave’s event-related synchronization and event-related de-synchronization extracted from EEG.","PeriodicalId":407640,"journal":{"name":"2009 Advanced Technologies for Enhanced Quality of Life","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116212468","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}
{"title":"Robotic Scaffolds for Tissue Engineering and Organ Growth","authors":"A. Stoica","doi":"10.1109/AT-EQUAL.2009.46","DOIUrl":"https://doi.org/10.1109/AT-EQUAL.2009.46","url":null,"abstract":"This paper proposes a robotics perspective to the design and analysis of future smart scaffolds to be used in tissue engineering and organ growth. Current biocompatible /biodegradable scaffolds provide load support, template for cell growth, and drug delivery for growth control. It is argued that future scaffolds would benefit from being able to allow/use relative movement among their components, which provides benefits by (1) improving mechanical stress of the cells, proven to stimulate better tissue growth, and (2) offering adaptive characteristics, as a platform that can (a) reconfigure shape (b) modify size to accommodate beneficial organ development, and (c) guide timed growth of complex organ structures, as well as other controlled changes over lifetime; these would become programmable scaffolds or in-vivo reconfigurable scaffolds. In addition, these may be able to sense their milieu/environment (measure and interpret physical and chemical data in-vivo), compute (to determine optimal movements and drug release) and engage in communications (correlating actions with other tissue/organs, interacting with outside the body instrumentation). Thus, future scaffolds can be treated as robots, of a new class, with specific characteristics and challenges such as being made of biodegradable components, and operating within human body; a robotics system perspective is useful in designing, producing and operating such systems.","PeriodicalId":407640,"journal":{"name":"2009 Advanced Technologies for Enhanced Quality of Life","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122076996","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}