Dynamics of tilt-based browsing on mobile devices

A tilt-controlled photo browsing method for small mobile devices is presented. The implementation uses continuous inputs from an accelerometer, and a multimodal (visual, audio and vibrotactile) display coupled with the states of this model. The model is based on a simple physical model, with its characteristics shaped to enhance usability. We show how the dynamics of the physical model can be shaped to make the handling qualities of the mobile device fit the browsing task. We implemented the proposed algorithm on Samsung MITs PDA with tri-axis accelerometer and a vibrotactile motor. The experiment used seven novice users browsing from 100 photos. We compare a tilt-based interaction method with a button-based browser and an iPod wheel. We discuss the usability performance and contrast this with subjective experience from the users. The iPod wheel has significantly poorer performance than button pushing or tilt interaction, despite its commercial popularity

20 K superconductivity in heavily electron doped surface layer of FeSe bulk crystal

A superconducting transition temperature Tc as high as 100 K was recently discovered in 1 monolayer (1ML) FeSe grown on SrTiO3 (STO). The discovery immediately ignited efforts to identify the mechanism for the dramatically enhanced Tc from its bulk value of 7 K. Currently, there are two main views on the origin of the enhanced Tc; in the first view, the enhancement comes from an interfacial effect while in the other it is from excess electrons with strong correlation strength. The issue is controversial and there are evidences that support each view. Finding the origin of the Tc enhancement could be the key to achieving even higher Tc and to identifying the microscopic mechanism for the superconductivity in iron-based materials. Here, we report the observation of 20 K superconductivity in the electron doped surface layer of FeSe. The electronic state of the surface layer possesses all the key spectroscopic aspects of the 1ML FeSe on STO. Without any interface effect, the surface layer state is found to have a moderate Tc of 20 K with a smaller gap opening of 4 meV. Our results clearly show that excess electrons with strong correlation strength alone cannot induce the maximum Tc, which in turn strongly suggests need for an interfacial effect to reach the enhanced Tc found in 1ML FeSe/STO.Comment: 5 pages, 4 figure

Projection of the demand for fertilizer

노트 : Total consumption of commercial fertilizer in Korea has been increased at a rapid rate during the last two decades. In the period from 1952 to 1961, the consumption of fertilizer was 208 thousand metric tons. In the period from 1962 to 1971, the average consumption was increased to 442 thousand metric tons on the plant nutrient basis per year on the average. During the same period the total area of arable land was not increased, but there was a little increase in the rate of land utilization by the multi-cropping farmers. Therefore, the usage of fertilizer on the unit cultivated area has been doubled during the last two decades. This study proposes to quantify the potential demand for fertilizer by nutrients in Korea for policy making. All of the data used in this study, except land prices and the seed improvement index, are derived from official reports of the Ministry of Agriculture and Fisheries and the National Agricultural Cooperative Federation. In the time series analysis demand functions of total and individual nutrients are estimated using prices of total and individual nutrients, wage rates, machine prices, cropping acres, and technological changes as explanatory variables from 1960 to 1972 on an annual basis. All prices were constant in 1965. Linear and linear in logarithm equations are estimated under both assumptions of instantaneous quantity adjustment and on the belief that quantity adjustment takes place over time

Microstructure and superconducting properties of hot isostatically pressed MgB2

Bulk samples of MgB2 have been formed by hot isostatic pressing (HIPping) of commercial powder at 100MPa and 950=B0C. The resulting material is 100% dense with a sharp superconducting transition at 37.5K. Microstructural studies have indicated the presence of small amounts of second phases within the material, namely MgO and B rich compositions, probably MgB4. Magnetisation measurements performed at 20K have revealed values of Jc=1.3 x 106A/cm2 at zero field, and 9.3 x 105A/cm2 at 1T. Magneto optical (MO) studies have shown direct evidence for the superconducting homogeneity and strong intergranular current flow in the material.Comment: 3 pages, 6 figures, text updated, new references included and discussed. Submitted to Superconductor Science and Technolog

Simultaneously Targeting Myofibroblast Contractility and Extracellular Matrix Crossâ Linking as a Therapeutic Concept in Airway Fibrosis

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/136664/1/ajt14103-sup-0002-FigureS2.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/136664/2/ajt14103-sup-0003-FigureS3.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/136664/3/ajt14103.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/136664/4/ajt14103_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/136664/5/ajt14103-sup-0001-FigureS1.pd