Semantic and fuzzy modelling for human behaviour recognition in smart spaces : a case study on ambient assisted living.

Human activity recognition in everyday environments is a critical, but challenging task in Ambient Intelligence applications to achieve proper Ambient Assisted Living, and key challenges still remain to be dealt with to realize robust methods. One of the major limitations of the Ambient Intelligence systems today is the lack of semantic models of those activities on the environment, so that the system can recognize the speci c activity being performed by the user(s) and act accordingly. In this context, this thesis addresses the general problem of knowledge representation in Smart Spaces. The main objective is to develop knowledge-based models, equipped with semantics to learn, infer and monitor human behaviours in Smart Spaces. Moreover, it is easy to recognize that some aspects of this problem have a high degree of uncertainty, and therefore, the developed models must be equipped with mechanisms to manage this type of information. A fuzzy ontology and a semantic hybrid system are presented to allow modelling and recognition of a set of complex real-life scenarios where vagueness and uncertainty are inherent to the human nature of the users that perform it. The handling of uncertain, incomplete and vague data (i.e., missing sensor readings and activity execution variations, since human behaviour is non-deterministic) is approached for the rst time through a fuzzy ontology validated on real-time settings within a hybrid data-driven and knowledgebased architecture. The semantics of activities, sub-activities and real-time object interaction are taken into consideration. The proposed framework consists of two main modules: the low-level sub-activity recognizer and the high-level activity recognizer. The rst module detects sub-activities (i.e., actions or basic activities) that take input data directly from a depth sensor (Kinect). The main contribution of this thesis tackles the second component of the hybrid system, which lays on top of the previous one, in a superior level of abstraction, and acquires the input data from the rst module's output, and executes ontological inference to provide users, activities and their in uence in the environment, with semantics. This component is thus knowledge-based, and a fuzzy ontology was designed to model the high-level activities. Since activity recognition requires context-awareness and the ability to discriminate among activities in di erent environments, the semantic framework allows for modelling common-sense knowledge in the form of a rule-based system that supports expressions close to natural language in the form of fuzzy linguistic labels. The framework advantages have been evaluated with a challenging and new public dataset, CAD-120, achieving an accuracy of 90.1% and 91.1% respectively for low and high-level activities. This entails an improvement over both, entirely data-driven approaches, and merely ontology-based approaches. As an added value, for the system to be su ciently simple and exible to be managed by non-expert users, and thus, facilitate the transfer of research to industry, a development framework composed by a programming toolbox, a hybrid crisp and fuzzy architecture, and graphical models to represent and con gure human behaviour in Smart Spaces, were developed in order to provide the framework with more usability in the nal application. As a result, human behaviour recognition can help assisting people with special needs such as in healthcare, independent elderly living, in remote rehabilitation monitoring, industrial process guideline control, and many other cases. This thesis shows use cases in these areas.

Pressure-assisted cold denaturation of hen egg white lysozyme: the influence of co-solvents probed by hydrogen exchange nuclear magnetic resonance

COSY proton nuclear magnetic resonance was used to measure the exchange rates of amide protons of hen egg white lysozyme (HEWL) in the pressure-assisted cold-denatured state and in the heat-denatured state. After dissolving lysozyme in deuterium oxide buffer, labile protons exchange for deuterons in such a way that exposed protons are substituted rapidly, whereas "protected" protons within structured parts of the protein are substituted slowly. The exchange rates k obs were determined for HEWL under heat treatment (80ºC) and under high pressure conditions at low temperature (3.75 kbar, -13ºC). Moreover, the influence of co-solvents (sorbitol, urea) on the exchange rate was examined under pressure-assisted cold denaturation conditions, and the corresponding protection factors, P, were determined. The exchange kinetics upon heat treatment was found to be a two-step process with initial slow exchange followed by a fast one, showing residual protection in the slow-exchange state and P-factors in the random-coil-like range for the final temperature-denatured state. Addition of sorbitol (500 mM) led to an increase of P-factors for the pressure-assisted cold denatured state, but not for the heat-denatured state. The presence of 2 M urea resulted in a drastic decrease of the P-factors of the pressure-assisted cold denatured state. For both types of co-solvents, the effect they exert appears to be cooperative, i.e., no particular regions within the protein can be identified with significantly diverse changes of P-factors.

Fenomenologinen tutkimus video-EEG potilaiden kohtauskokemuksista

Tässä fenomenologisessa tutkimuksessa kuvaillaan Video-EEG –tutkimukseen (VEEG) tulevien potilaiden kokemuksia kohtauksistaan. Tutkimusasetelmana on käytetty fenomenologiseen psykologiaan kuuluvaa Giorgin menetelmää soveltaen sitä hoitotieteen tutkimukseen. Tutkimuksen tarkoituksena oli kuvailla neurologisten kohtausoireiden vuoksi VEEG-tutkimukseen tulleiden potilaiden kokemuksia kohtauksistaan ja tunnistaa sekä kuvailla kokemukseen liittyviä tekijöitä. Tutkimuksen tavoitteena oli lisäta terveydenhoitohenkilökunnan ymmärrystä neurologisia kohtausoireita saavien ihmisten ohjaustarpeista. Materiaali kerättiin kahdeksalta potilaalta avoimilla haastatteluilla ja analysoitiin Giorgin analyysimenetelmällä. Aineistoon yhdistettiin kliinisen neurofysiologin lausunto ja muodostettiin kokemuskertomukset. Aineistosta tunnistettiin fenomenologista reduktiota käyttäen keskeiset kohtauksiin ja sairauteen liittyvät kokemukset. Käsitteiden suhdetta toisiinsa ja merkitystä sopeutumiselle analysoitiin käyttäen apuna Uncertainty in illness -mallia. Keskeisten kokemusten pohjalta toteutettiin kirjallisuushaku, jonka tuloksia reflektoitiin tämän tutkimuksen tuloksiin. Aineistosta muodostui kolme erillistä kokemuskertomusta: kertomus konkreettisista tapahtumista, kokemus hallinnan menettämisestä ja kokemus sairauden kanssa elämisesta. Keskeisiksi kokemussisällöiksi tunnistettiin kokemus terveysongelman hallinnasta, kokemus hallinnan menettämisestä, kokemus ympäristön negatiivisesta suhtautumisesta ja huoli läheisistä. Aikaisempaa tutkimusta löytyi kokemuksista terveysongelman hallinnasta ja hallinnan menetyksestä sekä ympäristön suhtautumisesta.

Computerized invasive measurement of time-dependent intraocular pressure

Several methods have been described to measure intraocular pressure (IOP) in clinical and research situations. However, the measurement of time varying IOP with high accuracy, mainly in situations that alter corneal properties, has not been reported until now. The present report describes a computerized system capable of recording the transitory variability of IOP, which is sufficiently sensitive to reliably measure ocular pulse peak-to-peak values. We also describe its characteristics and discuss its applicability to research and clinical studies. The device consists of a pressure transducer, a signal conditioning unit and an analog-to-digital converter coupled to a video acquisition board. A modified Cairns trabeculectomy was performed in 9 Oryctolagus cuniculus rabbits to obtain changes in IOP decay parameters and to evaluate the utility and sensitivity of the recording system. The device was effective for the study of kinetic parameters of IOP, such as decay pattern and ocular pulse waves due to cardiac and respiratory cycle rhythm. In addition, there was a significant increase of IOP versus time curve derivative when pre- and post-trabeculectomy recordings were compared. The present procedure excludes corneal thickness and error related to individual operator ability. Clinical complications due to saline infusion and pressure overload were not observed during biomicroscopic evaluation. Among the disadvantages of the procedure are the requirement of anesthesia and the use in acute recordings rather than chronic protocols. Finally, the method described may provide a reliable alternative for the study of ocular pressure dynamic alterations in man and may facilitate the investigation of the pathogenesis of glaucoma.

Fenomenologinen tutkimus video-EEG potilaiden kohtauskokemuksista

Tässä fenomenologisessa tutkimuksessa kuvaillaan Video-EEG –tutkimukseen (VEEG) tulevien potilaiden kokemuksia kohtauksistaan. Tutkimusasetelmana on käytetty fenomenologiseen psykologiaan kuuluvaa Giorgin menetelmää soveltaen sitä hoitotieteen tutkimukseen. Tutkimuksen tarkoituksena oli kuvailla neurologisten kohtausoireiden vuoksi VEEGtutkimukseen tulleiden potilaiden kokemuksia kohtauksistaan ja tunnistaa sekä kuvailla kokemukseen liittyviä tekijöitä. Tutkimuksen tavoitteena oli lisätä terveydenhoitohenkilökunnan ymmärrystä neurologisia kohtausoireita saavien ihmisten ohjaustarpeista. Materiaali kerättiin kahdeksalta potilaalta avoimilla haastatteluilla ja analysoitiin Giorgin analyysimenetelmällä. Aineistoon yhdistettiin kliinisen neurofysiologin lausunto ja muodostettiin kokemuskertomukset. Aineistosta tunnistettiin fenomenologista reduktiota käyttäen keskeiset kohtauksiin ja sairauteen liittyvät kokemukset. Käsitteiden suhdetta toisiinsa ja merkitystä sopeutumiselle analysoitiin käyttäen apuna Uncertainty in illness -mallia. Keskeisten kokemusten pohjalta toteutettiin kirjallisuushaku, jonka tuloksia reflektoitiin tämän tutkimuksen tuloksiin. Aineistosta muodostui kolme erillistä kokemuskertomusta: kertomus konkreettisista tapahtumista, kokemus hallinnan menettämisestä ja kokemus sairauden kanssa elämisestä. Keskeisiksi kokemussisällöiksi tunnistettiin kokemus terveysongelman hallinnasta, kokemus hallinnan menettämisestä, kokemus ympäristön negatiivisesta suhtautumisesta ja huoli läheisistä. Aikaisempaa tutkimusta löytyi kokemuksista terveysongelman hallinnasta ja hallinnan menetyksestä sekä ympäristön suhtautumisesta.

Automatic recognition of fish from video sequences

The problem of automatic recognition of the fish from the video sequences is discussed in this Master’s Thesis. This is a very urgent issue for many organizations engaged in fish farming in Finland and Russia because the process of automation control and counting of individual species is turning point in the industry. The difficulties and the specific features of the problem have been identified in order to find a solution and propose some recommendations for the components of the automated fish recognition system. Methods such as background subtraction, Kalman filtering and Viola-Jones method were implemented during this work for detection, tracking and estimation of fish parameters. Both the results of the experiments and the choice of the appropriate methods strongly depend on the quality and the type of a video which is used as an input data. Practical experiments have demonstrated that not all methods can produce good results for real data, whereas on synthetic data they operate satisfactorily.

Photocatalysis Studies under Visible Light Irradiation with TiO2 Obtained by Pulsed Electric Field Assisted Sol-Gel Method

The objective of this thesis was to study the effect of pulsed electric field on the preparation of TiO2 nanoparticles via sol-gel method under the visible light irradiation. The literature part introduces properties of different TiO2 crystal forms and principle of photocatalysis. It was expected that pulsed electric field would have an influence on degradation for oxalic acid and formic acid. TiO2 samples were prepared by using three frequencies (50Hz, 294Hz, and 963Hz) and two treatment times (12 minutes and 24 minutes) of pulsed electric field. The photocatalytic activities of TiO2 samples produced with sol-gel method were also compared with the TiO2 particles made by previous study and with the commercial TiO2 powder Aeroxide® (Evonic Degussa GmbH) at the same condition. Results show that pulsed electric field does have an effect on degradation for oxalic acid and formic acid. Generally, higher photocatalytic activities for oxalic acid and formic acid were obtained with lower frequency and longer treatment time of pulsed electric field.

Digital Exhaustion in relation to Video Games – The Consumer Perspective

This thesis regards exhaustion of copyright’s distribution right in intangible transfers of video games. It analyses whether, under the current law of the European Union, the phenomenon of digital exhaustion, especially in relation to games exists. The thesis analyses the consumers’ position in the market for copyright protected goods. It uses video games market as an example of the wider phenomenon of the effect of latest technological developments on consumers. The research conducted for the thesis is mostly legal dogmatic, although also comparative analysis, law and economics and law and technology methods are utilised. The thesis evaluates the effects of the most recent case law of the European Court of Justice to analyse the current state of digital exhaustion. In the analysis of effects that the existence of digital exhaustion has, the thesis uses the consumers’ point of view. The thesis introduces the current state of technology in the field of video games from a legal perspective. Furthermore the thesis analyses the effects on consumers of a scenario that no digital exhaustion exists in the future. Such scenario under the recent European case law at the moment seems realistic. The conclusion of my research is most importantly that the consumer position in the market for digital goods has deteriorated and that the probable exclusion of the exhaustion for digital goods is another piece of evidence of this development. Most importantly however, the state of affairs where no certainty prevails on whether digital exhaustion exists, creates injustice from the consumers’ point of view. Accordingly, acts by EU legislators of the Court of Justice of the European Union are required to clarify the issue.

Microwave-assisted extraction of anthocyanin from Chinese bayberry and its effects on anthocyanin stability

AbstractAnthocyanins are present in high concentrations in Chinese bayberry, Myrica rubra Sieb. & Zucc. Herein, a microwave-assisted extraction was used to extract the anthocyanins from Chinese bayberry. The HPLC chromatogram of the extracts showed that the anthocyanin components were slightly hydrolysed during the extraction process. Further experiments confirmed that microwave irradiation slightly hydrolysed cyanidin-3-O-glucoside to cyanidin, but did not significantly influence the antioxidant activity of the extracts. Optimized extraction conditions for total anthocyanin content were a solid-to-liquid ratio, extraction temperature, and extraction time of 1:50, 80 °C, and 15 min, respectively. Under these conditions, the anthocyanin content was 2.95 ± 0.08 mg·g−1, and the antioxidant activity yield was 279.96 ± 0.1 μmol.·g−1 Trolox equivalent on a dry weight basis. These results indicated that microwave-assisted extraction was a highly efficient extraction method with reduced processing time. However, under some extraction conditions it could damage the anthocyanins. These results provide an important guide for the application of microwave extraction.

TEHOHOITAJIEN KIVUN ARVIOINNIN OSAAMINEN – Tehohoitopotilaille kehitetyn kivunarviointimittarin käytön oppiminen video-opetuksen avulla.

Tehohoitopotilaan kivun arvioiminen on usein haastavaa, johtuen potilaan kyvyttömyydestä kommunikoida. Kivun arvioinnin avuksi onkin tästä syystä kehitetty käyttäytymiseen perustuvia kipumittareita. Tehohoitajilla on keskeinen asema kivun arvioinnissa, mutta tutkimusten perusteella tehohoitajien kivun arvioinnin osaaminen on puutteellista niin tietojen kuin taitojen osalta ja heillä on ennakkoasenteita kivun arviointiin liittyen. Tehohoitajien kouluttaminen kivun arviointiin liittyen on tärkeä keino tehohoitopotilaan kivun arvioinnin edistämisessä. Koulutuksen tulee kuitenkin olla helposti saatavilla, ottaen huomioon hoitotodellisuuden siihen tuomat haasteet. Tutkimuksen tarkoituksena oli arvioida video-opetuksen vaikutusta tehohoitajien tietoihin ja taitoihin tehohoitopotilaalle kehitetyn Critical-Care Pain Observation Tool (CPOT)-kipumittarin käyttöön liittyen, sekä kuvailla tehohoitajien kokemuksia video-opetuksesta oppimismenetelmänä. Yhdeltä teho-osastolta 48 tehohoitajaa katsoi tutkimusta varten kehitetyn CPOT-opetusvideon, jonka jälkeen he arvioivat kahden potilaan kipua CPOT-kipumittarilla, tutkijan tehdessä samanaikaisesti rinnakkaisarvioinnit potilaista. Arviointien jälkeen tehohoitajat tekivät tietotestin ja täyttivät CPOT-arviointilomakkeen. Tehohoitajien CPOT-kipumittarin käyttötaitoja arvioitiin tarkastelemalla tehohoitajien ja tutkijan tekemien kivunarviointien yhdenmukaisuutta interrater reliabiliteettilaskelmin. Kaksikymmentä tehohoitajaa haastateltiin heidän kokemuksista oppimismenetelmään liittyen. Haastattelut analysoitiin deduktiivisella temaattisella analyysillä. Tehohoitajat oppivat CPOT-kipumittarin käytön periaatteet ja kokivat oppineensa mittarin käytön, mutta interrater reliabiliteetti suhteessa tutkijan tekemiin kivun arviointeihin oli keskinkertainen. Video-opetus koettiin positiivisena, vaikkakin vuorovaikutuksellisuutta kaivattiin. Tutkimus osoitti video-opetuksen olevan käyttökelpoinen oppimismenetelmä CPOT-kipumittarin käytön periaatteiden oppimiseen, mutta parempien käyttötaitojen saavuttaminen vaatii lisäharjoittelua. Koska tehohoitajien subjektiivinen arvio käyttötaidoista ei välttämättä vastaa todellisia käyttötaitoja, oleellista olisi varmistaa myös objektiivisesti mittarin käyttötaidot koulutuksen jälkeen. Jatkossa tulisi tutkia käytäntöön soveltuvia keinoja varmistaa mittarin käyttötaidot, sekä teho-osastojen oppimiskulttuuria ja tehohoitajien motivaatiota ja asenteita työhön liittyvään oppimiseen.

Video protección consumidor

Desarrollo empresarial y creación de empresa

Problem solving and computer-assisted instruction in science education : analysis of research findings and the research process /

The quantitative component of this study examined the effect of computerassisted instruction (CAI) on science problem-solving performance, as well as the significance of logical reasoning ability to this relationship. I had the dual role of researcher and teacher, as I conducted the study with 84 grade seven students to whom I simultaneously taught science on a rotary-basis. A two-treatment research design using this sample of convenience allowed for a comparison between the problem-solving performance of a CAI treatment group (n = 46) versus a laboratory-based control group (n = 38). Science problem-solving performance was measured by a pretest and posttest that I developed for this study. The validity of these tests was addressed through critical discussions with faculty members, colleagues, as well as through feedback gained in a pilot study. High reliability was revealed between the pretest and the posttest; in this way, students who tended to score high on the pretest also tended to score high on the posttest. Interrater reliability was found to be high for 30 randomly-selected test responses which were scored independently by two raters (i.e., myself and my faculty advisor). Results indicated that the form of computer-assisted instruction (CAI) used in this study did not significantly improve students' problem-solving performance. Logical reasoning ability was measured by an abbreviated version of the Group Assessment of Lx)gical Thinking (GALT). Logical reasoning ability was found to be correlated to problem-solving performance in that, students with high logical reasoning ability tended to do better on the problem-solving tests and vice versa. However, no significant difference was observed in problem-solving improvement, in the laboratory-based instruction group versus the CAI group, for students varying in level of logical reasoning ability.Insignificant trends were noted in results obtained from students of high logical reasoning ability, but require further study. It was acknowledged that conclusions drawn from the quantitative component of this study were limited, as further modifications of the tests were recommended, as well as the use of a larger sample size. The purpose of the qualitative component of the study was to provide a detailed description ofmy thesis research process as a Brock University Master of Education student. My research journal notes served as the data base for open coding analysis. This analysis revealed six main themes which best described my research experience: research interests, practical considerations, research design, research analysis, development of the problem-solving tests, and scoring scheme development. These important areas ofmy thesis research experience were recounted in the form of a personal narrative. It was noted that the research process was a form of problem solving in itself, as I made use of several problem-solving strategies to achieve desired thesis outcomes.

A narrative journey of teacher reflexivity and authenticity in technological environments /

This qualitative narrative inquiry was driven by my desire to further explore my personal discovery that my utilization of educational technologies in teaching and learning environments seemed to heighten a sense of creativity, which in turn increased reflective practice and authenticity in my teaching. A narrative inquiry approach was used as it offered the opportunity to uncover the deeper meanings of authenticity and reflection as participants' personal experiences were coconstructed and reconstructed in relationship with me and in relationship to a social milieu. To gain further insight into this potential phenomenon, I engaged in 2 conversational interviews with 2 other teachers from an Ontario College in a large urban centre who have utilized educational technologies in their teaching and learning communities and I maintained a research journal, constructed during the interview process, to record my own emerging narrative accounts, reflections, insights and further questions. The field texts consisted of transcriptions of the interviews and my reflective journal. Research texts were developed as field texts were listened to multiple times and texts were examined for meanings and themes. The educational technologies that both women focused on in the interview were digital video of children as they play, learn and develop and the use of an audible teacher voice in online courses. The invitation given to students to explore and discover meaning in videos of children as they watched them with the teacher seemed to be a catalyst for authenticity and a sense of synergy in the classroom. The power of the audible teacher voice came through as an essential component in online learning environments to offer students a sense of humanness and connection with the teacher. Relationships in both online and face to face classrooms emerged as a necessary and central component to all teaching and learning communities. The theme of paradox also emerged as participants recognized that educational technologies can be used in ways that enhance creativity, authenticity, reflection and relationships or in ways that hinder these qualities in the teaching and learning community. Knowledge of the common experiences of college educators who utilize educational technologies, specifically digital video of children to educate early childhood educators, might give meaning and insight to inform the practice of other teachers who seek authentic, reflexive practice in the classroom and in on line environments.