Sensor positioning for a human activity recognition system using a double layer classifier

This paper describes the development of a human gait activity recognition system. A multi-sensor recognition system, which has been developed for this purpose, was reduced to a single sensor-based recognition system. A sensor election method was devised based on the maximum relevance minimum redundancy feature selector to determine the sensor’s optimum position regarding activity recognition. The election method proved that the thigh has the highest contribution to recognize walking, stairs and ramp ascending, and descending activities. A recognition algorithm (which depends mainly on features that are classified by random forest, and selected by a combined feature selector using the maximum relevance minimum redundancy and genetic algorithm) has been modified to compensate the degradation that occurs in the prediction accuracy due to the reduction in the number of sensors. The first modification was implementing a double layer classifier in order to discriminate between the interfered activities. The second modification was adding physical features to the features dictionary used. These modifications succeeded to improve the prediction accuracy to allow a single sensor recognition system to behave in the same manner as a multi-sensor activity recognition system.

MCDM Application of the Third Vote

When choosing among alternatives, group members may have various preferences regarding the properties of a solution being sought. Since the properties partially do and partially do not meet their collective wishes, the alternatives are in fact better or worse representatives of the collective will. This idea is implemented in the so-called Third Vote election method aimed at enhancing policy representation, and we show how to use it for collective multi-criteria decision making. To be specific, we consider an example of a committee charged with naming a campus library when neither plurality vote nor Condorcet method nor Borda count gives a unique solution. The committee members have differing opinions, such as whether the library should reflect the national affiliation, be named after a great man, relate to sciences, and so forth. Balancing opinion on these issues, the proposed library names are evaluated and the optimal compromise is found.

Hazelnut products traceability through Isotope Ratio Mass Spectrometry approach

<p>The geographical origin of hazelnuts products is nowadays a relevant aspect of high-quality food characterization. Isotope Ratio Mass Spectrometry (IRMS) could play a key role in origin discrimination. The present study aims to assess the geographical provenience of Italian roasted hazelnuts and paste of hazelnuts, by analysing relative isotopic ratios of carbon, nitrogen, and oxygen, through Elemental Analyzer – and Thermal Conversion – Isotope Ratio Mass Spectrometry. Method development is performed by evaluating test samples repeatability, considering 15 replicates measurements on the same day, reproducibility, considering 30 replicates measurements on two different days, and robustness, considering 30 replicates measurements, varying mass parameter. Preliminary outcomes highlight reproducible and robust results, having acceptable standard deviation values (from 0.07 to 0.3). One-way ANOVA test demonstrates a significant statistical difference between Italian and Georgian hazelnut test samples (ca. 1 δ of difference). A Design of Experiment, for training and validation sets building, is prepared, taking into account factors as harvesting year, variety, processing, and percentage of the peel. A total of n=30 processed hazelnuts lots, from Italy, Turkey, Georgia, and Azerbaijan, are going to be analysed for origin evaluation. Despite further analysis are still in progress, this strategy could potentially be the election method for a lot of food chain traceability since food isotopic abundances reflect ground and climate-related features, typical of precise locations. Moreover, this approach consists of limited or even inexistent sample preparation and provides for high sensitivity.</p>

The contribution of the driving forces in a person to the structure of motives in males and females

The work studied the participation of the driving forces in a person, some emotional characteristics and personality qualities in the structure of motives. Hypothesis: the driving forces in a person group certain motives, emotional and personal qualities around them. Grouping is influenced by the gender of the subject. Methods: portrait election method (Lyudmila Sobchik), method of colour metaphors (Igor’ Solomin), Max Lüscher's colour test, Manifest Anxiety Scale of Janet Allison Taylor Spence, “Five-factor personality questionnaireˮ, cluster analysis. Subjects include 203 males and 156 females. It was found that the “need for recognition and approval” is combined into one group with motives of social significance. Males and females have similar motivational formations in this case, but differ in implementation in specific motives. Women have a group of “personal and interpersonal significanceˮ based on “an actualised need for personal loveˮ. There is a combination with demonstrative behaviour, with motives of personal and interpersonal significance, with an energetic attitude towards activity. Personal motives of males “dissolve” in social significance, anxiety in males is also associated with motives of social significance. “Tendency to depressive states, emotional instabilityˮ of females is combined with motives reflecting negative events and stages of life, values and needs for self-affirmation. “Excitabilityˮ with the manifestation of socialised rough affects of females is accompanied by the significance of the power motive and the figure of the father. The “tendency to demonstrative behaviourˮ of males is grouped with the influence of socially significant people, negative events and stages of life, values and needs for self-affirmation.

Energy efficiency of organized cluster election method in wireless sensor networks

<p><span lang="EN-US">In this paper, we propose a new approach to improve the protocol LEACH performance. It has been accomplished by increasing the energy balancing in clusters among all nodes to minimize the energy dissipation during network communications. The improved method is based on an optimized selection of cluster head. The development of this approach has indicated progress in terms of network lifetime, energy consumption and number of packets transferred to base station, compared to LEACH or other related extended spaces protocols. Mathematical analysis and simulations results show the effectiveness of the proposed approach. The energy consumption of WSN has been reduced up to about 3.5 %. The network life cycle is prolonged by 44 %. The number of packets sent has been increased by 185 % than LEACH.</span></p>

FAKTOR-FAKTOR YANG MEMPENGARUHI PEMILIHAN METODE KONTRASEPSI (Kasus di Kecamatan Seberang Ulu I Kota Palembang)

Trend in the use of contraceptive methods in Palembang city shows that injections and pills are the most dominant method used for family plan. Data from BKKBN of Palembang city in 2014 showed that injections and pills were the most widely used each has for 40% and 27%. Whereas according to the BKKBN is one of right way to limit births following the family planning program through the Long-Term Contraception Method (LTM) such as implants, Intra Uterine Device and Method of Operation.The purposes of this research are to know about the distribution of contraceptive used according to the type and to find out the factors that affect the selection method beetween the dominant long-term contraception and short-term by the woman of fertile ages. The methods used were survey research methods, techniques of data collection were by observation and interview using the questionnaire, the analytical techniques used were univariable (descriptive), bivariable (chi-square and t-test) and multivariable (logistic regression).The results of this study shows that use of injections remains a trend of the election method of contraception by woman of fertile ages in Palembang city. The gender of the child owned by fertile age couple became the dominant factor which influences the selection of long-term contraception method and Non LTM. This was proven by the result of the multivariate logistic regression statistical test with a significant value of 0,000 < 0,05.