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Considerations and practice of objectives and ideologies of data structure teaching
2014 9th International Conference on Computer Science & Education
Year: 2014 | Conference Paper |
Aiming at paying more attention to knowledge imparting rather than abilities training and qualities cultivating, the new objectives of data structure course teaching, including the aspects of knowledge, abilities and qualities, are proposed. The ideologies of the course teaching are discussed and the methods including teaching mode, training form, course project and examining fashion for achieving...Show More
This paper presents studies designed toward understanding media defect corrosion. Focused ion beam technology is used to create well-defined defects exposing alloys of interest. Temperature and humidity stressing is employed to facilitate defect corrosion. Atomic force microscopy is used to characterize the defects before and after environmental stressing. It is found that corrosion growth is larg...Show More
Sol-gel synthesis of TiO/sub 2/ nanocrystals for application in dye-sensitized solar cells
D.B. Menzies;Qing Dai;C. Maunders;Yi-Bing Cheng;G.P. Simon;L. Spiccia
TiO/sub 2/ nanocrystals have been synthesized from Titanium(IV) butoxide without the use of an autoclave. It was found that using heat treatment temperatures below 600/spl deg/C pure anatase phase was retained in the nanocrystals. In addition, with increasing heat treatment temperature the nanocrystals became larger in size and the homogeneity was dramatically reduced.Show More
Will the numbers add up for sub-7-nm magnetic spacings? Future metrology issues for disk drive lubricants, overcoats, and topographies
To achieve disk drive recording densities greater than one terabit per square inch, future head-media spacings (HMSs) will need to be less than 7 nm. This will place severe demands on the metrology tools used to measure the thickness and topographies of the contributors to the head-media spacing. Here, we first review some of the metrologies used for characterizing overcoats, lubricants, and topog...Show More
Molecular dynamics simulation would be well suited to predict the physics of molecularly-thick lubricants on magnetic disk surfaces. The difficulty in defining suitable interatomic potentials, as well as the requirement for large computing power, makes this type of study difficult. Treating the lubricant film in the framework of fluid dynamics has proven a much better way to model its behavior. Th...Show More
This paper presents experimental investigations of the lubricant ripple formation when the slider flies on the track. We quantified the impact of ripple amplitude on slider flying height modulation (FHM). Comparisons were made between experimental observations and a previous modeling study where rippling was shown to be caused by slider-induced air shear modulation. We confirmed our model predicti...Show More
Toward an understanding of overcoat corrosion protection
2003 IEEE International Magnetics Conference (INTERMAG)
Year: 2003 | Conference Paper |
A model is presented that calculates the equilibrium lubricant thickness on a slider, resulting from a steady state where net inflow from disk evaporation equals net outflow from evaporation back to the disk, and flow to the slider back end from air shear. Based on experimental vapor pressure and viscosity data, and using surface viscosity enhancement factor and disjoining pressure values availabl...Show More
Time evolution of lubricant-slider dynamic interactions
IEEE Transactions on Magnetics
Cited by: Papers (21)
This paper presents time evolution studies of slider dynamics as a result of lubricant-slider interaction. Lubricant moguls and ripples are observed to form and they change in frequency and amplitude, following the slider dynamics. The slider motion and lubricant thickness modulation appear to build on each other. Eventually when enough lubricant is lost, mogul and ripple amplitudes decrease and t...Show More
Toward an understanding of overcoat corrosion protection
IEEE Transactions on Magnetics
Cited by: Papers (20)
This paper presents detailed electrochemical investigations on the role of overcoat and lubricant in head and media corrosion protection. Depending on the types of metal to be protected, some types of overcoat materials can actually accelerate corrosion due to galvanic coupling effect. To eliminate such coupling, a true dielectric film needs to be used instead of the conventional hydrogenated carb...Show More
Computation of minimal uniform transmission power in ad hoc wireless networks
23rd International Conference on Distributed Computing Systems Workshops, 2003. Proceedings.
Year: 2003 | Conference Paper |
Cited by: Papers (4)
Power conservation is a critical issue for ad hoc wireless networks. The main objective of the paper is to find the minimum uniform transmission power of an ad hoc wireless network, where each node uses the same transmission power while maintaining network connectivity. Three different algorithms, binary search, Prim's MST and its extension are developed to solve the problem, and their performance...Show More
Experimental study of lubricant-slider interactions
IEEE Transactions on Magnetics
Cited by: Papers (35)
A simple method is introduced to contaminate either the slider or the disk with a small amount of lubricant, with the intent of studying the interaction between the slider and the lubricant layer on hard disks at low mechanical fly heights. Lubricant ripples at a frequency of 220-280 kHz, corresponding to the second pitch mode of the sliders used, were observed on the disk with an optical surface ...Show More
Presents studies on lubricant mogul formation when a slider flies over a disk surface. In the range of parameters used in this study, moguls form and reach a steady-state pattern within 100 revolutions. During this period, no significant net lubricant loss is observed in the track. The completion of the full mogul pattern is followed by an asymptotic lubricant loss from the track. The loss was not...Show More
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