89,966 research outputs found
The BOSS online submission and assessment system
No full textComputer programming lends itself to automated assessment. With appropriate software tools, program correctness can be measured, along with an indication of quality according to a set of metrics. Furthermore, the regularity of program code allows plagiarism detection to be an integral part of the tools that support assessment. In this paper, we describe a submission and assessment system, called BOSS, that supports coursework assessment through collecting submissions, performing automatic tests for correctness and quality, checking for plagiarism, and providing an interface for marking and delivering feedback. We describe how automated assessment is incorporated into BOSS such that it supports, rather than constrains, assessment. The pedagogic and administrative issues that are affected by the assessment process are also discussed
Morris E. Boss letters, W.0078
No full textAbstract: Thirteen letters written by Morris E. Boss and members of the Boss family of Binghamton, New York.Scope and Content Note: These thirteen letters were written between 1861 and 1865 by Morris E. Boss of Binghamton, New York, and members of his family. Most of the letters were sent from Morris E. Boss to his brother, Homer B. Boss. A member of the Sixty-first New York Infantry, Morris's letters include brief accounts of the Battle of Seven Pines and Chancellorsville. His letters also describe camp life, including notable discussions of payroll backlogs, the draft, and the execution of deserters. In his last letter, dated June 20, 1865, Morris describes the discharge process and notes that he is owed $575.00 in back pay.The remaining letters are written by or addressed to other members of the Boss family; these letters also relay war news and updates on Morris's health and wellbeing. A letter from Charles Boss to Homer B. Boss written in December 1861 discusses Morris's enlistment and lists the names of other local recruits. Another letter from S. E. Sarrabu presumably addressed to Morris's sister Louisa M. Boss (incorrectly addressed as S. M. Boss) reports that Morris is missing and presumed injured after a shell exploded near him during a skirmish at Appomattox.Transcriptions of the letters are included, although there is no information as to who provided the transcriptions.Biographical/Historical Note: The son of carriage maker Ela W. Boss and Louisa Butler Boss, Morris E. Boss was born on April 7, 1844, in Fabius, New York. On November 6, 1861, he enlisted in Company I in the New York Sixty-first Infantry, later transferring to Company F. During the war, Morris received two commissions, advancing to full corporal on March 11, 1863, and full second lieutenant on December 15, 1864. He was discharged on July 15, 1865.After the war, Boss returned to New York, settling in Binghamton. City directories published between 1883 and 1899 list Boss as the owner and proprietor of a a number of hotels, billiard parlors, and saloons. Boss died between 1899 and 1900
The cost of milk production
No full text12 pages. This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.Peck, F. W.; Boss, Andrew. (1918). The cost of milk production. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/168427
Stellar velocity dispersions and emission line properties of SDSS-III/BOSS galaxies
No full textInternational audienceWe perform a spectroscopic analysis of 492 450 galaxy spectra from the first two years of observations of the Sloan Digital Sky Survey (SDSS) III/Baryonic Oscillation Spectroscopic Survey (BOSS) collaboration. This data set has been released in the ninth SDSS data release, the first public data release of BOSS spectra. We show that the typical signal-to-noise ratio of BOSS spectra, despite being low, is sufficient to measure stellar velocity dispersion and emission line fluxes for individual objects. We show that the typical velocity dispersion of a BOSS galaxy is similar to 240 km s(-1). The typical error in the velocity dispersion measurement is 14 per cent, and 93 per cent of BOSS galaxies have velocity dispersions with an accuracy of better than 30 per cent. The distribution in velocity dispersion is redshift independent between redshifts 0.15 and 0.7, which reflects the survey design targeting massive galaxies with an approximately uniform mass distribution in this redshift interval. We show that emission lines can be measured on BOSS spectra. However, the majority of BOSS galaxies lack detectable emission lines, as is to be expected because of the target selection design towards massive galaxies. We analyse the emission line properties and present diagnostic diagrams using the emission lines [O II], H beta, [OIII], H alpha and [N II] (detected in about 4 per cent of the galaxies) to separate star-forming objects and active galactic nuclei (AGN). We show that the emission line properties are strongly redshift dependent and that there is a clear correlation between observed frame colours and emission line properties. Within in the low-z sample (LOWZ) around 0.15 \textless z \textless 0.3, half of the emission line galaxies have low-ionization nuclear emission-line region (LINER)-like emission line ratios, followed by Seyfert-AGN-dominated spectra, and only a small fraction of a few per cent are purely star-forming galaxies. AGN and LINER-like objects, instead, are less prevalent in the high-z sample (CMASS) around 0.4 \textless z \textless 0.7, where more than half of the emission line objects are star forming. This is a pure selection effect caused by the non-detection of weak H beta emission lines in the BOSS spectra. Finally, we show that star-forming, AGN and emission line free galaxies are well separated in the g - r versus r - i target selection diagram
Secretary and Boss Breakfast
No full textDee F. Anderson shows how he dictates to Carol Call while Renita Risner and Tom Howells look on during the secretary and boss breakfast Tuesday at the 7-11 Cafe
Labor Requirements of Crop Production
No full textThis archival publication may not reflect current scientific knowledge or recommendations. Current information available from University of Minnesota Agricultural Experiment Station: http://www.maes.umn.edu/Cooper, T.P.; Peck, F. W.; Boss, Andrew. (1916). Labor Requirements of Crop Production. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/184034
Labor Requirements of Livestock
No full textThis archival publication may not reflect current scientific knowledge or recommendations. Current information available from University of Minnesota Agricultural Experiment Station: http://www.maes.umn.edu/Boss, Andrew; Peck, F. W.; Cooper, T.P.. (1916). Labor Requirements of Livestock. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/184085
[Boss Davis feeding white chickens]
No full textBlack and white (faded) of Boss Davis feeding white chickens inside a fenced yard, possibly Sanger area. Taken and collected by H.F.Browder, former County Agent, Denton County
Stellar masses of SDSS-III BOSS galaxies at z~0.5 and constraints to galaxy formation models
No full textWe calculate stellar masses for ∼400 000 massive luminous galaxies at redshift ∼0.2–0.7 using the first two years of data from the Baryon Oscillation Spectroscopic Survey (BOSS). Stellar masses are obtained by fitting model spectral energy distributions to u, g, r, i, z magnitudes, and simulations with mock galaxies are used to understand how well the templates recover the stellar mass. Accurate BOSS spectroscopic redshifts are used to constrain the fits. We find that the distribution of stellar masses in BOSS is narrow (Δlog M ∼ 0.5 dex) and peaks at about log M/M⊙ ∼ 11.3 (for a Kroupa initial stellar mass function), and that the mass sampling is uniform over the redshift range 0.2–0.6, in agreement with the intended BOSS target selection. The galaxy masses probed by BOSS extend over ∼1012 M⊙, providing unprecedented measurements of the high-mass end of the galaxy mass function. We find that the galaxy number density above ∼2.5 × 1011 M⊙ agrees with previous determinations. We perform a comparison with semi-analytic galaxy formation models tailored to the BOSS target selection and volume, in order to contain incompleteness. The abundance of massive galaxies in the models compare fairly well with the BOSS data, but the models lack galaxies at the massive end. Moreover, no evolution with redshift is detected from ∼0.6 to 0.4 in the data, whereas the abundance of massive galaxies in the models increases to redshift zero. Additionally, BOSS data display colour–magnitude (mass) relations similar to those found in the local Universe, where the most massive galaxies are the reddest. On the other hand, the model colours do not display a dependence on stellar mass, span a narrower range and are typically bluer than the observations. We argue that the lack of a colour–mass relation for massive galaxies in the models is mostly due to metallicity, which is too low in the models
4-H Parent's Guide Unit I: You're the Boss, Self Management
No full textThis archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.Lamison, Mary F.. (1977). 4-H Parent's Guide Unit I: You're the Boss, Self Management. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/176844
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