Overlap Interval Research Articles

35.4: Programmable Pulse Width LTPS TFT Shift Register for High Resolution and High Frame Rate Active Matrix Flat Panel Displays

AbstractThis paper proposes a programmable pulse width LTPS TFT shift register where an output pulse width is programmed only by adjusting a start pulse width without any additional clock signals and reconfiguration. Since an overlap interval of the output pulses is easily controlled in the shift register which operates with precharging scheme, the proposed shift register can be applied to high resolution and high frame rate display without the problem of insufficient line time. The performance of this circuit is verified by SMART SPICE at low‐temperature poly silicon (LTPS) thin film transistor (TFT) process. The pulse width is changed by the step size of two line time with only two input clock signals which leads to small area for circuit implementation and simulated power consumption is similar to that of the conventional shift register.

MEASUREMENTS OF THE SUN'S HIGH-LATITUDE MERIDIONAL CIRCULATION

The meridional circulation at high latitudes is crucial to the build-up and reversal of the Sun's polar magnetic fields. Here we characterize the axisymmetric flows by applying a magnetic feature cross-correlation procedure to high resolution magnetograms obtained by the Helioseismic and Magnetic Imager (HMI) onboard the Solar Dynamics Observatory (SDO). We focus on Carrington Rotations 2096-2107 (April 2010 to March 2011) - the overlap interval between HMI and the Michelson Doppler Investigation (MDI). HMI magnetograms averaged over 720 seconds are first mapped into heliographic coordinates. Strips from these maps are then cross-correlated to determine the distances in latitude and longitude that the magnetic element pattern has moved, thus providing meridional flow and differential rotation velocities for each rotation of the Sun. Flow velocities were averaged for the overlap interval and compared to results obtained from MDI data. This comparison indicates that these HMI images are rotated counter-clockwise by 0.075 degrees with respect to the Sun's rotation axis. The profiles indicate that HMI data can be used to reliably measure these axisymmetric flow velocities to at least within 5 degrees of the poles. Unlike the noisier MDI measurements, no evidence of a meridional flow counter-cell is seen in either hemisphere with the HMI measurements: poleward flow continues all the way to the poles. Slight North-South asymmetries are observed in the meridional flow. These asymmetries should contribute to the observed asymmetries in the polar fields and the timing of their reversals.

Normal Tibiofibular Relationships at the Syndesmosis on Axial CT Imaging

Computed tomography (CT) is reported to be superior to plain radiography for imaging the syndesmosis, but CT criteria differentiating normal from abnormal tibiofibular relationships do not exist. The purpose of this study was to define normal tibiofibular relationships at the syndesmosis on axial CT imaging and to report the reliability of these measurements. Thirty healthy volunteers underwent CT evaluation of bilateral ankles. Axial CT measurements consisted of tibiofibular clear space, tibiofibular overlap, anterior tibiofibular interval, and fibular rotation (θ(fib)). To assess reliability, 3 investigators independently made each CT measurement on 2 separate occasions. Sixty ankles were included for analysis. CT measurements demonstrated excellent intrarater and interrater reliability. There was significant anatomic variability between individuals. Specifically, statistically significant gender differences were discovered in CT measurements of tibiofibular overlap and anterior tibiofibular interval. Variance between ankles of each subject was calculated. In an uninjured population, tibiofibular intervals do not vary by more than 2.3 mm, and the rotation of the fibula does not vary by more than 6.5° between ankles of the same person. Measurements of tibiofibular relationships made on axial CT images are reliable. Because of significant anatomic variation between individuals, using a patient's contralateral ankle for comparison provides a precise definition of normal tibiofibular relationships. These criteria allow for the detection of subtle variations in the tibiofibular relationships indicating instability and provide a tool for postoperatively assessing the reduction of the injured syndesmosis.

Relation between Surface Roughness and Overlap Interval in Fused Deposition Modeling

Rapid prototyping (RP) can efficiently fabricate high level models with complex shapes. Hence the RP has been widely applied in various industrial fields. However, as the technology is inherently performed by layered manufacturing process, the surface quality of the RP part is not satisfactory to use general industrial purpose. This is the reason that surface roughness problem has been key issue in RP. In this paper, relation between surface roughness and overlap interval is investigated based on a surface roughness formulation in fused deposition modeling (FDM). Additionally, effects of surface angle and filament shape are analyzed and discussed to predict surface roughness distribution by the overlap interval variation.

A Simple Bargaining Mechanism that Elicits Truthful Reservation Prices

We describe a simple 2-stage mechanism whereby for two bargainers, a Buyer and a Seller, it is a weakly dominant strategy to report their reservation prices in the 1st stage. If the Buyer reports a higher price than the Seller, then the referee announces that there is the possibility for trade, and the bargainers proceed to make offers in a 2nd stage. The average of the 2nd-stage offers becomes the settlement if both offers fall into the overlap interval between the reported reservation prices; if only one offer falls into this interval, it is the settlement, but it is implemented with probability 1/2; if neither offer falls into the interval, there is no settlement. Comparisons are made with other bargaining mechanisms.

Optimal Model of Strip-and-Roll Hedge based on the Min-Variance

Abstract When the longest holding period of futures contracts is shorter than the hedging period, the hedger has to use the overlap of two or more futures contracts to hedge for the spot. In this article, using the shorter futures contract-by-stack to construct the hedging portfolio, which makes the time of the hedging portfolio equal to the spot's time, the optimal model of strip-and-roll hedge based on the min-variance is set up. First, by establishing the risk function of the overlap futures-contracts to gain the optimal hedging ratio, controlling problem of the total risk in the series of complicated time is solved. Second, in the total hedging risk of the smallest cases, the proportion of relations of the different overlap futures will be concluded and then the optimal ratio of different futures in the overlap interval. Empirical studies show that the efficiency of hedging in this study is higher than the existing stack-and-roll hedge model.

Drawback During Deposition of Overlapping Molten Wax Droplets

Two overlapping droplets impacting on a solid surface coalesce and recoil so that the edges of the droplets are drawn back, a phenomenon called drawback. A series of experiments were conducted on the merging of two overlapping wax droplets deposited on an aluminum drum to characterize the drawback process between the two droplets. Drum temperature, droplet overlap ratio, and the time interval between impacts of droplets were varied. Wax bumps, formed by coalescence of two droplets on the drum surface, were photographed and their length and width measured. An aspect ratio and dimensionless drawback index, quantifying the extent of drawback, were calculated from these measurements. When drum temperature is increased, or the time interval between impacts of the two droplets is reduced, there is more drawback and the ink bumps become round, since the cooling rate of droplets is slower and droplets have a longer time to change shape due to surface tension. A simple heat transfer model was developed to predict changes in droplet-cooling rate with changes in droplet overlap, substrate temperature, or time interval (deposition frequency). Experiments were also conducted on the formation of lines by depositing 20 droplets. Measurements on the drawback of two droplets were used to predict conditions under which broken lines are obtained.

Dynamical mean-field study of the ferromagnetic transition temperature of a two-band model for colossal magnetoresistance materials

The ferromagnetic transition temperature $({T}_{\mathrm{C}})$ of a two-band double-exchange (DE) model for colossal magnetoresistance materials is studied using dynamical mean-field theory in wide ranges of coupling constants, hopping parameters, and carrier densities. The results are shown to be in good agreement with Monte Carlo simulations. When the bands overlap, the value of ${T}_{\mathrm{C}}$ is found to be much larger than in the one-band case, for all values of the chemical potential within the energy overlap interval. A nonzero off-diagonal hopping produces an additional boost of ${T}_{\mathrm{C}}$, showing the importance of these terms, as well as the concomitant use of multiband models, to increase the critical temperatures in DE-based theories.

An adaptive scheme for fault-tolerant scheduling of soft real-time tasks in multiprocessor systems

The scheduling of real-time tasks with primary-backup-based fault-tolerant requirements has been an important problem for several years. Most of the known scheduling schemes are non-adaptive in nature meaning that they do not adapt to the dynamics of faults and task's parameters in the system. In this paper, we propose an adaptive fault-tolerant scheduling scheme that has a mechanism to control the overlap interval between the primary and backup versions of tasks such that the overall performance of the system is improved. The overlap interval is determined based on the observed fault rate and task's soft laxity. We also propose a new performance index, called SR index, that integrates schedulability ( S) and reliability ( R) into a single metric. To evaluate the proposed scheme, we have conducted analytical and simulation studies under different fault and deadline scenarios, and found that the proposed adaptive scheme adapts to system dynamics and offers better SR index than that of the non-adaptive schemes.

The Drosophila STAM gene homolog is in a tight gene cluster, and its expression correlates to that of the adjacent gene ial.

Drosophila STAM is a homolog of mammalian STAM genes, which encode Jak associated signal-transducing adapter molecules. A 20-kilobase stretch of genomic DNA at 32B on chromosome arm 2L, which contains Drosophila STAM, has been sequenced. By comparison to cDNAs isolated and characterized, this region contains four tightly clustered genes: ial, mitochondrial porin, and the two newly discovered genes, STAM and DNZ1. Like its mouse and human homologs, STAM bears SH3 and ITAM domains. DNZ1 is a founding member of a sub-family of proteins bearing a DHHC/NEW1 zinc finger domain. Although these four genes are contained in a defined Deficiency overlap interval, no available P-element mutations in the region disrupt any of the genes, and no other discrete mutations in the genes have been identified. Among the four genes, ial and STAM share a common 5' control region, suggesting coordinate expression. Developmental Northern data and embryonic and ovariole expression data show that STAM and ial expression are correlated. The other two genes in the cluster appear to be expressed at constitutive levels throughout development.

Concordance of X‐Ray Cluster Data with Big Bang Nucleosynthesis in Mixed Dark Matter Models

If the hot, X-rayEemitting gas in rich clusters forms a fair sample of the universe as in cold dark matter (CDM) models and the universe is at the critical density then the data appear to imply a ) T 1, baryon fraction derived from X-ray cluster data), larger than that predicted by big bang ) b,X () b,X 4) b nucleosynthesis (BBN). While other systematic e†ects such as clumping can lower in this paper we ) b,X , use an elementary analysis to show that a simple admixture of hot dark matter (HDM; low-mass neutrinos) with CDM to yield mixed dark matter shifts down so that signi-cant overlap with ) b,X ) b from BBN can occur for km s~1 Mpc~1, even without invoking the possible aforementioned H 0 ( 73 e†ects. The overlap interval is slightly larger for lower mass neutrinos since fewer of them cluster on the scale of the hot X-ray gas. We illustrate this result quantitatively in terms of a simple isothermal model. More realistic velocity dispersion pro-les, with less centrally peaked density pro-les, imply that fewer neutrinos are trapped and thus further increase the interval of overlap. Subject headings: cosmology: theory E dark matter E galaxies: clusters: general E nuclear reactions, nucleosynthesis, abundances E X-rays: galaxies

Self-affine asperity model for earthquakes.

A model for fault dynamics consisting of two rough and rigid brownian profiles that slide one over the other is introduced. An earthquake occurs when there is an intersection between the two profiles. The energy release is proportional to the overlap interval. Our model exhibits some specific features which follow from the fractal geometry of the fault: (1) non-universality of the exponent of the Gutenberg-Richter law for the magnitude distribution; (2) presence of local stress accumulation before a large seismic event; (3) non-trivial space-time clustering of the epicenters. These properties are in good agreement with various observations and lead to specific predictions that can be experimentally tested.

Stationary and pursuit visual fixation share similar behavior

Stationary and pursuit fixation may involve different fixation mechanisms that are reflected by differences in saccadic reaction times (SRTs). Gap, Simultaneous, and Overlap interval paradigms provided three distinct SRT ranges for comparisons between these two viewing conditions. SRTs following pursuit fixation were longer than following stationary fixation, but were similarly affected by the interval paradigms. The SRT increase with smooth pursuit was largely explained by additional demands for programming oblique saccades. The paradigm dependent SRT relationships also persisted after timing cues were minimized. These results indicate that stationary and pursuit fixation have similar responses to different fixation paradigms and do not implicate the existence of multiple fixation processes.

Laboratory verification of modeling for a cycloconverter-fed microprocessor-controlled self-synchronous motor

The first known numerical simulation is presented of a cycloconverter-link self-synchronous motor drive operated by a discrete-time speed controller. Theoretically predicted and laboratory-measured transient and steady-state performances are compared to assess the accuracy of the model. The correlation between predictions made by the average value of motor phase current base simulation and the laboratory-measured performance shows that the model is quite adequate for steady-state analysis. Furthermore, the model offers close prediction of speed during transient conditions, indicating that the associated half-cycle average values of current and torque were reasonably accurate, although the capability of measuring the variables was not available. In addition, the general describing equations of motor phase currents during the commutation overlap interval are derived and numerically solved. Measured and predicted commutation overlap intervals for steady-state conditions are compared.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>