Search results for "Mod"
showing 10 items of 39605 documents
Numerical and Experimental Study of a Novel Concept for Hydraulically Controlled Negative Loads
2016
This paper presents a numerical and experimental investigation of a novel concept that eliminates oscillations in hydraulic systems containing a counterbalance valve in series with a pressure compensated flow supply. The concept utilizes a secondary circuit where a low-pass filtered value of the load pressure is generated and fed back to the compensator of the flow supply valve. The novel concept has been implemented on a single boom actuated by a cylinder. A nonlinear model of the system has been developed and an experimental verification shows good correspondence between the model and the real system. The model is used for a parameter study on the novel concept. From the study it is found…
Pretnoguruma kontaktlēcu ietekme uz akomodācijas atbildi
2021
Maģistra darbs ir uzrakstīts latviešu valodā uz 43 lapaspusēm, satur 23 attēlus, 9 tabulas un 78 atsauces uz literatūras avotiem. Darba mērķis bija izvērtēt pretnoguruma kontaktlēcu un slodzes ietekmi uz akomodācijas atbildi. Pētījumā piedalījās 15 dalībnieki vecumā no 20 – 29 gadiem, no kuriem 6 bija ar miopiju un 9 ar emetropiju. Akomodācijas atbilde tika novērtēta, izmantojot sfēriskās un pretnoguruma kontaktlēcas, kā arī veicot tuvuma slodzes uzdevumus. Mērījumi tika nolasīti ar “Power ref 3” iekārtu. Maģistra darbā netika novērota statistiski nozīmīga atšķirība akomodācijas atbildei ar dažāda veida kontaktlēcām, kā arī slodzes ietekmē. Atslēgvārdi: akomodācija, pretnoguruma kontaktlēca…
Hard to catch: Experimental evidence supports evasive mimicry
2021
Most research on aposematism has focused on chemically defended prey, but the signalling difficulty of capture remains poorly explored. Similar to classical Batesian and Müllerian mimicry related to distastefulness, such ‘evasive aposematism' may also lead to convergence in warning colours, known as evasive mimicry. A prime candidate group for evasive mimicry areAdelphabutterflies, which are agile insects and show remarkable colour pattern convergence. We tested the ability of naive blue tits to learn to avoid and generalizeAdelphawing patterns associated with the difficulty of capture and compared their response to that of birds that learned to associate the same wing patterns with distast…
Examining pre-service teachers' Technological Pedagogical Content Knowledge as evolving knowledge domains : A longitudinal approach
2019
The aim of this study is to outline the development and changes in pre‐service teachers' technological pedagogical content knowledge (TPACK) assessments during the first 3 years in teacher education. Specifically, research was conducted at three measurement points over a 3‐year teacher education period. The target group consisted of pre‐service teachers (N = 148) from three Finnish universities. Results indicate a growth in confidence related to all TPACK areas during the research period. The strongest gains were in pedagogical content knowledge. In addition, the gains were larger in other areas related to pedagogical knowledge than areas related to technology or content knowledge. In areas…
Repeat Assessed Values Model for Housing Price Index
2017
Abstract This study proposes an innovative methodology, named Repeat Appraised Price Model (RAV), useful for determining the price index numbers for real estate markets and the corresponding index numbers of hedonic prices of main real estate characteristics in the case of a lack of data. The methodological approach proposed in this paper aims to appraise the time series of price index numbers. It integrates the principles of the method of repeat sales with the peculiarities of the Hedonic Price Method, overcoming the problem of an almost total absence of repeat sales for the same property in a given time range; on the other hand, the technique aims to overcome the limitation of the repeat …
A time estimation task as a possible measure of emotions: difference depending on the nature of the stimulus used
2015
Objective: Time perception is fundamental for human experience. A topic which has attracted the attention of researchers for long time is how the stimulus sensory modality (e.g., images vs. sounds) affects time judgments. However, so far, no study has directly compared the effect of two sensory modalities using emotional stimuli on time judgments. Methods: In the present two studies, healthy participants were asked to estimate the duration of a pure sound preceded by the presentation of odors vs. emotional videos as priming stimuli (implicit emotion-eliciting task). During the task, skin conductance (SC) was measured as an index of arousal. Results: Olfactory stimuli resulted in an increase…
Principals’ views on changes in the provision of support for learning and schooling in Finland after educational reform
2019
Recently, the large-scale reforms of special education have been carried out in many countries. This study focuses on the latest Finnish reform of special education in compulsory education. As principals lead educational reforms in schools, their role in the implementation of reform is significant. The study explores principals’ views on the changes in support arrangements after the educational reform. We used latent class analysis to identify the subgroups of principals who share similar views. In addition, we examined the relationship between the subgroups and individual, school, and municipal level factors using multinomial logistic regression analysis. Four subgroups were identified: im…
Mariano Cabrerizo: literary initiatives and liberal energy in the time of Fernando VII
2018
La actividad del editor Mariano Cabrerizo ilumina el itinerario de la novela y la burguesía. El espíritu exaltado del Trienio lo condujo a la cárcel y al destierro, lo que supuso un duro golpe para la producción editorial y la economía familiar. Pero gracias a la inteligencia y al oportunismo pudo relanzar su negocio por medio de la Colección de novelas, poderoso instrumento en la difusión de la narrativa europea y española. Las suscripciones de los particulares, de las grandes instituciones y de las bibliotecas privadas ayudaron a consolidar las iniciativas comerciales y literarias de Cabrerizo. Los avatares personales condujeron al famoso editor a una nueva situación de bonanza económica …
Business models, small firms, and performance in knowledge-intensive based services. A study in the private health sector
2020
During the last years, and due to social and economic changes, the demand for private health services (PHS) is growing. A more significant number of companies appeared under different business model formulas. Besides the traditionally independent professionals, other types of entrepreneurs appeared under associated business. As a result of these changes, there are differences in how these services are provided and their performance. OBJECTIVES: This work is proposed to study the business model effect on small private health service companies' activity and analyze institutions’ and intellectual capital's role in their performance. METHODOLOGY: A qualitative-quantitative mixed method was desi…
The Bayesian estimation of private investment in Finland
2009
Abstract This paper estimates an investment equation for private investment using Bayesian estimation techniques. In the paper we derive the optimal capital accumulation behavior in the model economy from the households’ optimization problem of utility. The equation is derived as in Smets and Wouters (2003). The model contains costly adjustment of investment and random shocks to adjustment cost function. The driving variable of investment is Tobin Q variable. The empirical proxy for Tobin Q in this paper is the ratio of OMX Helsinki Cap Index to the price index of the physical capital. The investment series is the seasonally adjusted private investment in quarterly national accounts. The AR…