The General tire hinnasto N:o 1G

kuv., 11 x 19 cm

The General tire hinnasto N:o 1G

kuv., 11 x 19 cm

The General tire hinnasto N:o 2G

kuv., 11 x 19 cm

The General tire hinnasto n:o 3 G

kuv., 11 x 19 cm

The General tire hinnasto n:o 2 HG

kuv., 11 x 19 cm

Noise and vibration damping of Fe-Cr-x alloys

The aim of the present work is to study the noise and vibration damping capacity of ferromagnetic Fe-16%Cr base alloys (before and after heat treatment) with different Al and Mo contents. The noise damping was evaluated by the level of sound emission after an impact. The vibration damping was studied using a cantilever device. In addition to these tests, the magnetic structure of the materials was also investigated by Kerr effect. It was verified that the materials can decrease noise level in the frequency range of human earring. The vibration damping is influenced by heat treatment and chemical composition of the alloy. The improvement of vibration damping after heat treatment is ascribed to the decrease of internal stresses in materials and changes in magnetic domain structures.

Export Tire Entry to Chinese Market

After the economic reform, China has undergone fast economic growth, urbanization and adopted the western lifestyle. Global enterprises are investing in China and Finnish companies began to enter the Chinese market after the 1980s. Fast economic growth has downside effects like pollution and thus more cleantech solutions are needed. There are different kinds of entry modes that companies are using when entering the Chinese market. This thesis focuses on export tire entry mode. The purpose of this study is to examine cleantech companies’ opinions about the export tire operations. The background of this study is built by combining the written knowledge about the history of the Chinese industry and market entry modes. The empirical part of the study is a semi-structured, qualitative analysis of five case companies that are operating together in a particular export tire and represent the highest Finnish cleantech knowledge. The results of this study indicate that the export tire entry is an easy and cost effective way to enter new markets or market segment. Export tire is really dependent on the leader who in this particular case succeeded well.

Exit times for some processes with normally distributed noise

Denna avhandling handlar om metoder för att hitta begränsningar för det asymptotiska beteendet hos en förväntad uthoppstid från ett område omkring en xpunkt för processer som har normalfördelad störning. I huvudsak behandlas olika typer av autoregressiva processer. Fyra olika metoder används. En metod som använder principen för stora avvikelser samt en metod som jämför uthoppstiden med en återkomsttid ger övre begränsningar för den förväntade uthoppstiden. En martingalmetod och en metod för normalfördelade stokastiska variabler ger undre begränsningar. Metoderna har alla både förtjänster och nackdelar. Genom att kombinera de olika metoderna får man de bästa resultaten. Vi får fram gränsvärdet för det asymptotiska beteendet hos en uthoppstid för den multivariata autoregressiva processen, samt motsvarande gränsvärde för den univariata autoregressiva processen av ordning n.

Description de la Tartarie tirée en partie de plusieurs cartes qui en ont esté faictes en partie de diverses relations et de divers autheurs arabes qui ont esté au jour jusques à présent

Julkaisussa: Cartes générales de la géographie ancienne et nouvelle, ou les empires, monarchies, royaumes, estats, républiques, et peuples. Vol I

Suite du Golphe de Bothnie tiré des cartes Suédoises

Julkaisussa: Le petit atlas maritime : recueil de cartes et plans des quatre parties du monde en cinq volumes. Vol. IV

Carte de l'Asie projettée stéreographiquement, tirée des rélations et observations, contenues dans les voyages modernes, de même que dans les monumens des anciens, corrigée de tout ce qui sent la fable, et divisée en ses IX parties méthodiques = Asia secundum legitimas projectionis stereographicae regulas et juxta recentissimas observationes, et relationes explosis aliorum fabulosis designationibus et narrationibus, adhibitis quoque veterum monumentis et recentiorum itinerariis descripta, et in partes suas methodicas IX divisa

Nimeke- ja tekijätiedot nimiönkehyksissä

Cette carte de Californie et du Nouveau Méxique, est tirée de celle qui a êté envoyée par un grand d'Espagne pour être communiquée a messieurs de l'Académie Royale des Sciences

Nimeke- ja tekijätiedot nimiönkehyksissä

Savolax et Kexholm, tirées de divers mémoires, par le s.r Sanson geographe ordinaire du roy.

[N. 1:875000].

Effect of scanner acoustic background noise on strict resting-state fMRI

Functional MRI (fMRI) resting-state experiments are aimed at identifying brain networks that support basal brain function. Although most investigators consider a ‘resting-state’ fMRI experiment with no specific external stimulation, subjects are unavoidably under heavy acoustic noise produced by the equipment. In the present study, we evaluated the influence of auditory input on the resting-state networks (RSNs). Twenty-two healthy subjects were scanned using two similar echo-planar imaging sequences in the same 3T MRI scanner: a default pulse sequence and a reduced “silent” pulse sequence. Experimental sessions consisted of two consecutive 7-min runs with noise conditions (default or silent) counterbalanced across subjects. A self-organizing group independent component analysis was applied to fMRI data in order to recognize the RSNs. The insula, left middle frontal gyrus and right precentral and left inferior parietal lobules showed significant differences in the voxel-wise comparison between RSNs depending on noise condition. In the presence of low-level noise, these areas Granger-cause oscillations in RSNs with cognitive implications (dorsal attention and entorhinal), while during high noise acquisition, these connectivities are reduced or inverted. Applying low noise MR acquisitions in research may allow the detection of subtle differences of the RSNs, with implications in experimental planning for resting-state studies, data analysis, and ergonomic factors.