Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 197 for “"Pins"”.
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PINS : a haptic computer interface system
The research goal was to develop a dense array of discreet vertical actuators as an input and output device with haptic feedback for Human Computer Interaction (HCI). This expands upon the current research of table surfaces as medium for HCI by adding a third dimension that both a user and a …
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Forced convection heat transfer from extended surfaces with finned pins
It has been shown that by increasing the film coefficient "h" by means of forced convection the heat transfer rate of a finned pin can be considerably improved. For an average flow rate of air over the extended surfaces, throughout the investigation the increase in the effectiveness was as much as …
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Optimization of the design of an extended surface with finned pins
… have been used in the past but those with finned pins have proved to be unique in increasing the rate of heat transfer. Hsieh working on the original idea ot professor Hsu proved that heat transfer rate can be further increased by putting annular fins on a pin. In this thesis the design of finned …
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Intentional Implantation of Pins in the Dental Pulp Under Clinical Conditions
… of threaded stainless steel gold-plated pins.</p> <p>Many different types of pins are currently used in several aspects of restorative and periodontal dentistry. In some cases there may be unintentional perforation of the dental pulp. In other cases it may be advantageous to purposely …
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Hashtags and Pins in Education: Digital Native Educators in Digital Habitats.
… including their tools, like hashtags and pins, we can begin to develop ways to incorporate these skills into our teacher preparation programs. The knowledge gained from this study can help administrators, technology leaders and coaches to better understand their Digital Native teachers and …
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Design of an automated sorting and orienting machine for electronic pins
… exception of the step which inserts electronic pins into the PCBs. Past attempts to automate this process have resulted in two unreliable machines that are not in use on the production line. Thus, electronic pin insertion is currently a manual process. The design proposed in this thesis for an …
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Pins in a Composite : Their Effects on the Strength of the Material
<p>The influence of pins on the compression and tensile strength of a composite resin was measured. </p> <p>Compression strength was measured in cylindrical samples 8 mm long and 4 mm in diameter, using different size threaded stainless steel pins. The tensile strength was determined by compression …
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Retention of resin restorations by means of enamel etching and by pins
… of acid etching of the enamel and the use of pins on the retention of direct filling resins when used for restoration of fractured incisor teeth. The retention secured by these techniques as related to the cavity design also was studied. Four different cavity preparations were used. The …
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My pins are my dreams : Pinterest, collective daydreams, and the aspirational gap
In the early twentieth century, the emergence of national market and maturation of color printing technologies brought a revolution in advertising. Consumers received and collected many colorful advertising images and pasted them into scrapbooks. Nowadays, a group of visually-driven social commerce …
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Computerized Ultrasonic Raytracing Model for C-scans of Solid Steel Bridge Pins
… ultrasonic C-scanning of solid steel bridge pins using a raytrace model. The raytrace model was developed to facilitate interpretation of data obtained from an ultrasonic C-scanning system for the Virginia Transportation Research Council (VTRC). The report discusses the reasons behind the …
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Towards improving the usability of system-assigned PINs: can implicit learning techniques help?
Personal Identification Numbers (PINs) are widely used for automated teller machines (ATMs), computers, mobile devices, debit cards, and credit cards. People tend to choose easy-to-recall PINs that are related to important dates (e.g., birthdays or anniversaries), or keypad patterns. Unfortunately, …
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Morphogenetic forces planar polarize LGN/Pins in the embryonic head during Drosophila gastrulation
… embryo result in the planar cell polarity of Pins/LGN localization and cell division orientation. I demonstrate that this striking planar cell polarity and division orientation depend on forces that result from morphogenetic movements on the other side of the embryo (~100μm away). The oriented …
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Ambient ZeroScatter: Ambient BPSK and QPSK Backscatter Communication using Existing Digital I/O Pins
… demonstrate that completely unmodied digital I/O pins on MCUs and FPGAs can be re-purposed as binary phase-shift keying (BPSK) backscatter modulators in the UHF and microwave bands with zero added components, and that multiple digital I/O pins can be used in combination with series or shunt …
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Press fit design : force and torque testing of steel dowel pins in brass and nylon samples
… were press fitted with hardened steel dowel pins. Press fit force and torque required to induce slipping were measured experimentally. Sample dimensions and material properties were utilized to predict expected force and torque levels, which were then measured experimentally. Brass press fit …
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ANALYZING THE FUNCTIONS OF PREFOLDIN COMPLEX IN NEUROBLAST HOMEOSTASIS OF DROSOPHILA MELANOGASTER
… of Prefoldin and Partner of Inscuteable (Pins) leads to the formation of gigantic brains with dramatic neuroblast overgrowth, due to the severe asymmetric division defects of both neuroblasts and Intermediate Neural Progenitors (INPs). Co-depletion of Prefoldin and Pins also induces …
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Design and fabrication of a digitally reconfigurable surface
… interpolation layer is held onto the tops of the pins by vacuum pressure to prevent undesired dimpling of the surface caused by the discrete nature of the pin array. Prior art in this field of reconfigurable pin tooling (RPT) surfaces have mostly involved using large diameter pins with …
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Opportunistic power reassignment between processor and memory in 3D stacks
… processor-memory designs, power and ground (P/G) pins can account for the majority of the pins. This is because packages include separate pins for the disjoint processor and memory power delivery networks (PDNs). Supporting separate PDNs and P/G pins for processor and memory is inefficient, as …
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Generalized Probabilistic Bowling Distributions
… in each distribution for an frame game on pins. Additionally, we shall generalize the number of possible games when bowling frames on pins. Then, we shall derive the frequency distribution of each frame’s scores and the arithmetic mean for frames on pins. Finally, to summarize the variety …
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Investigating rates and mechanisms of lateral erosion in a small bedrock river using erosion pins, structure-from-motion photogrammetry, and optically stimulated luminescence dating: Konza Prairie, northeast Kansas
… mechanisms of lateral bedrock erosion. Erosion pins and structure from motion (SfM) were used to determine annual lateral erosion rates and spatio-temporal patterns of erosion along bedrock channel banks. Single-grain optically stimulated luminescence (OSL) dating of fluvial deposits overlying a …
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