Assembly processor program converts symbolic programming language to machine language

Assembly processor program converts symbolic programming language to machine language. This program translates symbolic codes into computer understandable instructions, assigns locations in storage for successive instructions, and computer locations from symbolic addresses

Utility of late summer transient snowline migration rate on Taku Glacier, Alaska

On Taku Glacier, Alaska a combination of field observations of snow water equivalent (SWE) from snowpits and probing in the vicinity of the transient snowline (TSL) are used to quantify the mass balance gradient. The balance gradient derived from the TSL and SWE measured in snowpits at 1000 m from 1998–2010 ranges from 2.6–3.8 mm m<sup>−1</sup>. Probing transects from 950 m–1100 m directly measure SWE and yield a slightly higher balance gradient of 3.3–3.8 mm m<sup>−1</sup>. The TSL on Taku Glacier is identified in MODIS and Landsat 4 and 7 Thematic Mapper images for 31 dates during the 2004–2010 period to assess the consistency of its rate of rise and reliability in assessing ablation for mass balance assessment. For example, in 2010, the TSL was 750 m on 28 July, 800 m on 5 August, 875 m on 14 August, 925 m on 30 August, and 975 m on 20 September. The mean observed probing balance gradient was 3.3 mm m<sup>−1</sup>, combined with the TSL rise of 3.7 m day<sup>−1</sup> yields an ablation rate of 12.2 mm day<sup>−1</sup> from mid-July to mid-Sept, 2010. The TSL rise in the region from 750–1100 m on Taku Glacier during eleven periods each covering more than 14 days during the ablation season indicates a mean TSL rise of 3.7 m day<sup>−1</sup>, the rate of rise is relatively consistent ranging from 3.1 to 4.4 m day<sup>−1</sup>. This rate is useful for ascertaining the final ELA if images or observations are not available near the end of the ablation season. The mean ablation from 750–1100 m during the July–September period determined from the TSL rise and the observed balance gradient is 11–13 mm day<sup>−1</sup> on Taku Glacier during the 2004–2010 period. The potential for providing an estimate of b<sub>n</sub> from TSL observations late in the melt season from satellite images combined with the frequent availability of such images provides a means for efficient mass balance assessment in many years and on many glaciers

Retreat of the Antarctic Ice Sheet in the Southern Ross Embayment from Records at Amundsen and Liv Glaciers, Southern Transantarctic Mountains

The Antarctic Ice Sheet contains ~58 m of global sea-level equivalent and thus its future behavior under global warming is of pressing concern. Examination of past ice-sheet behavior during periods of warming climate can afford insight useful for predicting future sea-level rise. This study focuses on a major unanswered question - namely, the cause of Antarctic Ice Sheet retreat following the last glaciation. Documenting the timing and nature of this deglaciation is crucial to understand the mechanisms behind ice-sheet behavior. Here, I examine how the marine portions of the ice sheet responded to the major warming that occurred at the end of the last ice age. I carried out fieldwork at Amundsen and Liv Glaciers, outlet glaciers of the East Antarctic Ice Sheet that drain through the Transantarctic Mountains to the Ross Ice Shelf. Thinning during the last deglaciation left drift on nunataks along the Ross Sea coast. My goal was to document these deposits and produce a chronology for the last stages of the most recent ice retreat. This chronology comes from radiocarbon dates of algae that lived in former ice-marginal ponds dammed by the ice sheet. My results indicate that the Ross Sea grounding line retreated southeastward past Liv Glacier by ~4,200 yrs BP and past Amundsen Glacier by 2,900 yrs BP. Prior studies show that the deglaciation was marked by an initial period of rapid retreat, indicative of instability in this sector of the AIS. My data show that this was followed by a more gradual period of retreat in the late Holocene, with possible stabilization of the grounding line shortly after ~3000 yrs BP when it retreated to near its current position on the Siple Coast in the vicinity of Mercer Ice Stream. The timing of grounding-line retreat does not correspond closely with the largest post-LGM changes in global sea level or ocean temperature. Rather, recession was delayed significantly relative to the global deglaciation. Slowing of grounding-line retreat in the late Holocene may have been due to the effects of increased accumulation and falling local sea level, suggesting that these factors may be important in controlling the extent of the Antarctic Ice Sheet

On Identifying and Locating-Dominating Codes in the Infinite King Grid

Siirretty Doriast

Art as a Tool to Communicate Science

My thesis explores effective ways to communicate science through art. My main goal is to illustrate significant environmental issues in a way that engages people emotionally, as well as intellectually. Researchers need a means of sharing fascinating things to broaden people’s horizons on science. In order to gain inspiration and ideas, I have researched and discussed a wide range of artists, past and present. This exploration has fueled the content of the body of artwork I have developed throughout this project

Spillover effects of foreign entry on local firms and business networks in Russia - A Case study on Fazer Bakeries in St. Petersburg

siirretty Doriast

The Copper Strike of 1968-1969

In May of 1968, workers at the Kingston mine, a branch of the Calumet Division of Universal Oil Products walked off the site in protest of a safety issue involving a man-car. Knowing their contracts were due for negotiation in just a few months, the workers quickly returned, only to find themselves striking yet again just three months later, when negotiations failed. Requesting pay equal to that of the workers at the nearby White Pine mine was unacceptable to the heads of Universal Oil, the corporation which bought the long running Calumet & Hecla just a year earlier in 1968. The strike would last for nine months, ending in a total shutdown of all mining operations on the Keweenaw Peninsula, and bring an economic hardship to the area that would take decades to recover from. The Copper Strike of 1968-1969 is often forgotten, though extremely important to the story of the copper industry in Michigan, as well as to the United States. This paper has not yet been submitted

Harmonic Oscillation in the Presence of Multiple Damping Forces

The relatively mundane damped harmonic oscillator is found to exhibit interesting motion once under the influence of both a velocity dependent and a Coulombic frictional damping force. Data for the decay of the amplitude as a function of time were collected on a specially prepared torsional oscillator. with a variable electromagnetic damping mechanism. An analytical solution of the appropriate equation of motion was obtained by the method of Laplace transforms. In both the limits of zero Coulombic friction and zero velocity damping, the solution reduces to the well-known answers to the problem. the solution, when plotted with the correct parameters, fits the numerical solution very well. The solution also shows excellent quantitative agreement with the experimental data

Glacier annual balance measurement, prediction, forecasting and climate correlations, North Cascades, Washington 1984?2006

International audienceNorth Cascade glacier annual balance measured on 10 glaciers from 1984?2006 yielded mean annual balance (ba) of ?0.54 m/a, and ?12.38 m cumulatively. This is a significant loss for glaciers that average 30?60 m in thickness, representing 20?40% of their entire volume. Two observed glaciers, Lewis Glacier and Spider Glacier, no longer exist. The ba of North Cascade glaciers is reliably calculated based on 1 April snowpack water equivalent and ablation season temperature. 1 May forecasting of ba using the Pacific Decadal Oscillation and the Multivariate El Nino Southern Oscillation circulation indices correctly determined the sign of mass balance in 42 of 47 years. Glacier annual balance forecasting is an important step for summer water resource management in glacier runoff dominated stream systems. The forecast for North Cascade glaciers in 2007 is for a negative annual balance