CHANGING NATURE OF LEADERSHIP IN TERMS OF AGEING. YOUNG LIONS AND GREY FALCONS

This paper highlights discussions of leadership from age perspective. Age is an often debated subject but how big a role does age actually play in a work community? The aim of this study is to examine the work of managers in terms of ageing. How they have changed in the course of time. The framework of the study is age management. Aging has also influence on leadership. This meaning of ageing and age diversity determines in leadership discourse. This study highlights three different discourses of leadership. This study is based on the interviews of four managers. The selection of interviewees is based on organisational and generational differences. Conclusion of interview analysis suggest that Managers discuss their work from three different framework viewpoints: 1. The Frame of Age and Ageing, 2. The Frame of Responsibility and 3. The Frame of Personality.leadership, ageing, age management, diverse age groups, generational differences, responsibility.

Finnish fitness centers : The use of information systems in customer controlling

This thesis was assigned by Viveca, the University of Jyväskylä. The target of this thesis was to find out the reasons for the fitness centers simultaneously using multiple information systems and how the fitness centers manage their customers by using these information systems. The general situation of Finland was also compared to those of other countries. The research was a qualitative research; where six people working in the fitness industry were interviewed. These interviewees came from all the areas representing the business: Managers and employees of the fitness centers with also one information system company representative interviewed. The results indicate that the information systems that are being used in Finnish fitness centers do not have all the required features which make the fitness centers use different information systems at the same time. The information systems’ features in customer controlling are deficient. Accordingly, the information systems should be especially improved in that area. This thesis gives information about the current status of Information systems in Finland to help in the decision making of the information system companies and the fitness centers. The whole fitness industry is relatively new and particularly the fitness industry in Finland is young compared to the other countries. The fitness industry in Finland can be predicted to encounter changes in the future. The growth in fitness industry will increase the competition and it is also likely to bring new information systems to the market.Opinnäytetyön toimeksiantajana toimi Viveca, Jyväskylän yliopisto. Työn tavoitteena oli löytää syitä siihen, miksi kuntokeskukset käyttävät useita eri tietojärjestelmiä yhtä aikaa ja kuinka tietojärjestelmiä käytetään asiakkuuksien hallinnointiin. Työssä vertailtiin lisäksi Suomen tilannetta muihin maihin. Tutkimus oli kvalitatiivinen tutkimus, jossa haastateltiin yhteensä kuutta fitnessalalla työskentelevää ihmistä. Haastateltavat olivat alan eri osa-alueilta: kuntokeskusten johtajia, työntekijöitä ja tietojärjestelmäyrityksen edustaja. Tulokset osoittivat, että tällä hetkellä käytössä olevat tietojärjestelmät ovat toiminnoiltaan puutteellisia, minkä vuoksi kuntokeskukset joutuvat käyttämään useita eri tietojärjestelmiä yhtä aikaa. Tietojärjestelmissä on puutteita erityisesti asiakkaiden hallinnoinnissa, ja niiden tulisikin erityisesti kehittyä juuri kyseisellä osa-alueella. Tämä opinnäytetyö antaa tietoa tietojärjestelmien tämänhetkisestä tilanteesta Suomessa ja auttaa siten kuntokeskusten ja tietojärjestelmiä tuottavien yritysten päätöksenteossa. Kuntosaliala on suhteellisen uusi ja erityisesti suomessa ala on vasta alkuvaiheessa verrattuna muihin maihin. Alalla on odotettavissa muutoksia tulevaisuudessa, sillä alan kasvu lisää kilpailua entisestään ja tuo markkinoille uusia tietojärjestelmiä

Comparing Features for Classification of MEG Responses to Motor Imagery

Peer reviewe

Processing and Transmission of Information

Contains report on one research project.National Aeronautics and Space Administration (Grant NGL-22-009-013

Segmented Cell Design for Improved Factoring of Aging Effects in Dye Solar Cells

A new segmented cell design was applied to study the aging of dye solar cell with stainless steel (StS) photoelectrode substrate, in particular the role of electrolyte in the degradation. Photovoltaic characterization indicated that StS photoelectrode cells are subjected to rapid (within hours or days) performance degradation that did not occur in the StS counter electrode cells. Other complementary techniques, open circuit voltage decay (OCVD) and electrochemical impedance spectroscopy (EIS), showed changes in the recombination at the photoelectrode/electrolyte interface. With the segmented cell method, we confirmed that the electrolyte was not contaminated by the StS nor was it subject to other significant changes related to the rapid degradation.Peer reviewe

Whole lung lavage therapy for pulmonary alveolar proteinosis: a global survey of current practices and procedures

Maija Halme on työryhmän WLL International Study Group jäsen.Peer reviewe

Dynamic Obstacle Overcoming Capability of Pendulum-driven Ball-Shaped Robots

This paper discusses dynamic step-crossing capability of pendulum-driven ball-shaped robots. We introduce an extended dynamic model that allows modeling of ballrobot rolling, bouncing and slipping. Based on the new model, our simulations predict the maximum over-passable step-height for the robot. The simulation results agree well with the result from a parallel simulation in Adamssoftware as well as with practical experiments. The new dynamic model can be applied for mobility analysis of robot-ball designs as well as for path planning.Peer reviewe

Gyroscopic Precession In Motion Modelling Of Ball-Shaped Robots

This study discusses kinematic and dynamic precession models for a rolling ball with a finite contact area and a point contact respectively. In literature, both conventions have been applied. In this paper, we discuss in detail the kinematic and dynamic models to describe the ball precession and the radius of a circular rolling path. The kinematic model can be used if the contact area and friction coefficient are sufficient to prevent slippage. The dynamic precession model has significance in multi-body simulation environments handling rolling balls with ideal point contacts. We have applied both the kinematic and dynamic precession model to evaluate the no-slip condition of the existing GimBall-robot. According to the result, the necessity of an external precession torque may cause slipping at lower velocities than expected if ignoring this torque.Peer reviewe

Metallic and plastic dye solar cells

Dye solar cells (DSCs) are quite a new technology in photovoltaics. The traditional DSCs are prepared on conductively coated glass substrates in high temperature using a batch process. Manufacturing the cells on low-cost metal and plastic substrates would enable significant cost reductions as well as roll-to-roll mass production. There is a selection of metals and possible conducting coatings for plastics with varying electrical, optical, and chemical properties and price. The substrate has a dominant impact on the methods and materials that can be applied to make the cell and consequently on the resulting performance of the device. Furthermore, the substrates influence significantly the stability of the device. The main issue with plastics is their permeability whereas with metals, chemical stability in the electrolyte is themain concern. The leakage of electrolyte and the impact of water intake through the plastics can be affected by the material choices in particular with the electrolyte and dye composition. In the case of the metallic electrodes, the chemical stability can be improved by choosing a corrosion-resistant metal, applying a blocking layer or changing to a less aggressive electrolyte. One major focus of the current research of the flexible DSCs is increasing the efficiency by improved low-temperature preparation methods and materials especially for the photoelectrode. Another significant challenge is the development of noncorrosive electrolyte and dye combinations that work well even in the presence of significant amounts of water.Peer reviewe

An analytical model of hydrogen evolution and oxidation reactions on electrodes partially covered with a catalyst

Our previous theoretical study on the performance limits of the platinum (Pt) nanoparticle catalyst for the hydrogen evolution reaction (HER) had shown that the mass transport losses at a partially catalyst-covered planar electrode are independent of the catalyst loading. This suggests that the two-dimensional (2D) numerical model used could be simplified to a one-dimensional (1D) model to provide an easier but equally accurate description of the operation of these HER electrodes. In this article, we derive an analytical 1D model and show that it indeed gives results that are practically identical to the 2D numerical simulations. We discuss the general principles of the model and how it can be used to extend the applicability of existing electrochemical models of planar electrodes to low catalyst loadings suitable for operating photoelectrochemical devices under unconcentrated sunlight. Since the mass transport losses of the HER are often very sensitive to the H2 concentration, we also discuss the limiting current density of the hydrogen oxidation reaction (HOR) and how it is not necessarily independent of the reaction kinetics. The results give insight into the interplay of kinetic and mass-transport limitations at HER/HOR electrodes with implications for the design of kinetic experiments and the optimization of catalyst loadings in the photoelectrochemical cells.Peer reviewe