28,036 research outputs found
W. F. Mitchell
No full textEarlier this year, an article was published in the News Bulletin
(February 2012) on the background of Captain Boyns Hedley
Hocking, a dentist who became one of the first casualties in the
bombing of Darwin in 1942. The author, W F Mitchell, has kindly
provided a summary of the 70th anniversary activities held in
Darwin in February 2012 to commemorate this significant event in
the Northern Territory?s historyDate:2012-09News Bulletin no. 413, p. 36 - 37
Assessing the George W. Bush Presidency: A Tale of Two Terms
Get PDFIn one of the first volumes assessing the full two terms of the George W. Bush presidency, Wroe and Herbert have gathered the work of leading American and European scholars. In fifteen succinct and incisive chapters, authorities such as Jim Pfiffner, John Maltese, Graham Wilson and Alan Gitelson offer assessments of the Bush administration's successes and failures. Extensive attention is paid to Bush's foreign policy, including 'The War on Terror' but the focus is broadened to absorb not only the Bush Doctrine and its repercussions, but also his trade and homeland security policies. The president's domestic leadership in economics and social policy is investigated, as are his dealings as president with the other institutions of the U.S. political system. The result is a comprehensive guide to the Bush presidency and its legacy
Software quality and governance in agile software development
No full textLooking at software engineering from a historical perspective, we can see how software development methodologies have evolved over the past 50 years. Using the right software development methodology with the right settings has always been a challenge. Therefore, there has always been a need for empirical evidence about what worked well and what did not, and what factors affect the different variables of the development process. Probably the most noticeable change to software development methodology in the last 15 years has been the introduction of the word “agile”. As any area matures, there is a need to understand its components and relations, as well as the need of empirical evidence about how well agile methods work in real life settings. In this thesis, we empirically investigate the impact of agile methods on different aspects of quality including product quality, process quality and stakeholders’ satisfaction as well as the different factors that affect these aspects. Quantitative and qualitative research methods were used for this research, including semi-structured interviews and surveys. Quality was studied in two projects that used agile software development. The empirical study showed that both projects were successful with multiple releases, and with improved product quality and stakeholders’ satisfaction. The data analysis produced a list of 13 refined grounded hypotheses out of which 5 were supported throughout the research. One project was studied in-depth by collecting quantitative data about the process used via a newly designed iteration monitor. The iteration monitor was used by the team over three iterations and it helped identify issues and trends within the team in order to improve the process in the following iterations. Data about other organisations collected via surveys was used to generalise the obtained results. A variety of statistical analysis techniques were applied and these suggested that when agile methods have a good impact on quality they also has a good impact on productivity and satisfaction, also when agile methods had good impact on the previous aspects they reduced cost. More importantly, the analysis clustered 58 agile practices into 15 factors including incremental and iterative development, agile quality assurance, and communication. These factors can be used as a guide for agile process improvement. The previous results raised questions about agile project governance, and to answer these questions the agile projects governance survey was conducted. This survey collected 129 responses, and its statistically significant results suggested that: retrospectives are more effective when applied properly as they had more impact when the whole team participated and comments were recorded, that organisation size has a negative relationship with success, and that good practices are related together as when a team does one aspect well, they do all aspects well. Finally, the research results supported the hypotheses: agile software development can produce good quality software, achieve stakeholders’ satisfaction, motivate teams, assures quick and effective response to stakeholder’s requests, and it goes in stages, matures, and improves over time
Barbara W. [F...] to Sir (2 October 1962)
Get PDFSigned by Barbara W. [F...]https://egrove.olemiss.edu/mercorr_pro/1499/thumbnail.jp
Behandeling van parodontitis bij diabetes mellitus heeft altijd zin!
No full textIn de mei-editie van het Nederlands Tijdschrift voor Tandheelkunde werd het redactioneel commentaar gewijd aan de vraag in hoeverre de behandeling van parodontitis bij patiënten met diabetes mellitus zinvol zou zijn. B.G. Loos, W. J. Teeuw, V. Gerdes en F. Abbas geven een reactie op dit commentaar en betogen dat behandeling van parodontitis bij patiënten met diabetes mellitus altijd zin heeft
Ekstremalne dobowe sumy opadów w Północno-Zachodniej Polsce
No full textThe paper presents an analysis of the extreme precipitation recorded in north-western Poland between
1951 and 1995. The author of the present paper selected a day with a maximal twenty-fourhour
precipitation sum out of each month. The author also selected intervals characterized by specific
twenty-four-hour values: 0.1-9.9 mm, 10.0-19.9 mm, 20.0-29.9 mm, 30.0-49.9 mm, 50.0-99.9
mm and ≥100 mm. The author selected frequencies of their occurrence and a monthly average and
annual maximums’ sum of precipitation. A concept of an extreme precipitation relates to twentyfour-
hour sums 50.0-99.9 mm and ≥100 mm. Moreover the author selected the days with extreme
twenty-four-hour sums ≥100 mm and specified the atmospheric circulation types, distinguished by
B. Osuchowska-Klein (1975).W pracy przybliżono problematykę ekstremalnych opadów w północno-zachodniej Polsce.
Badanie ekstremalnych wartości elementów meteorologicznych to jedno z najważniejszych
zagadnień klimatologii. Występowanie tych elementów może spowodować straty ekonomiczne,
społeczne czy środowiskowe. W analizie uwzględniono dobowe sumy opadów
z 14 stacji, obejmujące lata 1951-1995. Dla obszaru północno-zachodniej Polski za opad
ekstremalny przyjęto sumy dobowe 50,0-99,9 mm i ³100 mm, następnie przeprowadzono
analizę wybranych dni, w których wystąpiły ekstremalne dobowe sumy opadów ≥100 mm
i określono typy cyrkulacji atmosferycznej, wyróżnione przez B. Osuchowską-Klein (1975).
Z przeprowadzonych analiz wynika, że na obszarze północno-zachodniej Polski występują
opady ekstremalne, które przekraczają granice bezpieczeństwa, powodując zagrożenia
społeczno-gospodarcze i środowiskowe. Sumy dobowe 50,0-99,9 mm pojawiały się od maja
do października oraz w lutym, natomiast sumy ≥100 mm występowały tylko w letnich miesiącach. W badanym wieloleciu 1951-1995, przy uwzględnieniu 14 stacji z obszaru północno-
zachodniej Polski ekstremalne opady 50,0-99,9 mm wystąpiły 102 razy (6%), natomiast
opady ≥100 mm – 3 razy: w Łebie (24.07.1988 r.), Koszalinie (18.08.1991 r.) i Toruniu
(15.06.1980 r.). Jednakże, przy uwzględnieniu większej liczby stacji (185 stacji dla okresu
1961-1980) sumy ≥100 mm wystąpiły w 14 innych stacjach. Dla tych dni wykonano mapy
i określono typ cyrkulacji atmosferycznej. Otrzymano, że ekstremalne opady występowały
przy typach cyrkulacji cyklonalnej – Eo (północno-wschodnia i wschodnia), F (południowo-
-wschodnia) i CB (północno-zachodnia) oraz antycyklonalnej – E1 (południowo-wschodnia
i wschodnia) i C2D (zachodnia). W wybranych 8 dniach opady ekstremalne wystąpiły: w czerwcu
(2 razy) – przy typach F i E1; w lipcu (3 razy) – przy typach Eo (2 razy) i C2D i w sierpniu
(3 razy) – przy typach Eo, F i CB. W 6 dniach przyczyną opadów ekstremalnych były typy
cyklonalne.
W ciepłym okresie roku, przy typach cyrkulacji ze składową północną na obszar północno-
zachodniej Polski napływa chłodne powietrze, natomiast przy typach południowo-wschodnich
i wschodnich napływa bardzo ciepłe powietrze, często o dużej wilgotności względnej.
W obu przypadkach adwekcja powietrza może prowadzić do rozwoju konwekcji i w rezultacie
powstają opady o ekstremalnej sumie
W. Lewis Civil War letter
No full textThis collection contains a letter written in November 1864 by W. Lewis, then stationed at DeValls, Bluff, Ark. The author is believed to be Walter Lewis of Company F of the 20th Iowa Infantry
Some formulas for the Appell function F 1 (a, b, b′; c; w, z)
No full textSome new relations for the Appell function F 1 (a, b, b′; c; w, z) are obtained including differentiation and integration formulas, integral representations, series and recurrence relations. Some integrals are given which can be expressed in terms of F 1 and confluent Appell functions (Humbert functions) Φ1, Φ2, Φ
REMARKS ON THE ISLE OF SABLE
No full textGeneral description of the navigation considerations around Sable Island to accompany the Isle of Sable map. The remarks are as follows: "On the days of the new and full moon it is high water along the south shore of the island at half an hour after eight o'clock, and it flows till half an hour past ten o'clock on the north side, and till near eleven o'clock in the pond. Common spring tides rise seven feet perpendicular, and neap tides four. The flood sets in from the south south-west at the rate of half a mile an hour; but it alters its course, and increases its velocity, near the ends of the island. At half flood it streams north, and south at half ebb, with great swiftness across the north-east and north-west bars, therefore dangerous to approach without a commanding breeze. The north-east bar runs out east-north-east about four leagues from the eastern extremity of the island, all of which is very shoal, having in few places more than two, three or four fathoms water; whence it continues east and east by south, deepening gradually to twelve, fifteen and eighteen fathoms of water, at the distance of eight or ten leagues, and shapeth to the south and south-east, sloping gently to sixty and seventy fathoms of water. To the northward and eastward it is very steep, and in a run of three miles the water will deepen to one hundred and thirty fathoms. Abreast the body of the isle the soundings are more gradual. The shoal ground of the north-west bar shapes to the westward, and deepens gradually to seventy fathoms of water, at the distance of twenty or twenty-five leagues from the isle, and winds easterly and southerly until it meets the soundings of the north-east bar. The quality of the bottom in general is very fine sand, with a few small transparent stones; to the northward, and close to the north-east bar, the sand is mixed with many black specks; but near the north-west bar the sand has a greenish colour. The north-east bar breaks in bad weather at the distance of eight and ten leagues from the island; but, in moderate weather, a ship may cross it at five leagues distance with great safety in no less than eight and nine fathoms of water; and, if the weather is clear, the island may be seen thence distinctly from a boat. The north-west bar breaks in bad weather at seven, and sometimes eight, miles from the island; but when the sea is smooth, ships may cross it within the distance of four miles in seven fathoms of water.* Along the north and south sides of the island are many spits of sand extending nearly parallel, and within a mile from the shore. Vessels may anchor on the north-side of the island between these spits, and not be liable to be drove off by southerly winds. On the south-side it is boldest off the body of the island, having ten and twelve fathoms of water within a mile from the shore; but towards the bar it is more shoal and dangerous to approach for the currents, which are uncertain, being in a great degree influenced by the winds which have preceded. The surf beats continually on the shore; and, in calm weather, is heard several leagues off. Landing on this island with boats is practicable on the north side, after a continuance of good weather only. The whole island is composed of fine white sand, much coarser than any of the soundings about it, and intermixed with small transparent stones. Its face is very broken, and hove up in little hills, knobs and cliffs, wildly heaped together, within which are hollows and ponds of fresh water, the skirts of which about with cramberries the whole year, and with blueberries, juniper, &c. in their season, as also with ducks, snipes, and other birds. This sandy island affords a great plenty of beach grass, wild pease, and other herbages, for the support of horses, cows, hogs, &c. which are running wild upon it. It grows no trees, but abundance of wreck and drift wood may be picked up along the shore for fuel. Strong northerly winds shift the spits of sand, and often even choak up the entrance of the pond, which usually opens again by the next southern blast. In this ponds are prodigious numbers of seals, and some flat fish, eels, &c. and on the south-west side lies a bed of remarkably large muscles and clambs. The south shoreis between the cliffs, so low that sea breaks quite over in many places when the wind blows on the island. The Ram’s Head is the highest hill on this island; it has a steep cliff on the north west, and falls gently to the south east. The Naked Sand Hills are one hundred and forty-six feet of perpendicular height above the level of high-water mark, and always appear very white. Mount Knight is in the shape of a pyramid, situated in a hollow between two steep cliffs. Mount Luttrell is a remarkable hummock on the top of a large swelling in the land. Gratia Hill is a knob at the top of a cliff, the height of which is one hundred and twenty-six feet perpendicular above high-water mark. The Vale of Misery is also remarkable; as is Smith’s Flagstaff, a large hill, with a regular ascent in every way. From the offing, the south side of the island appears like a long ridge of sandy cliffs lessening towards the west end, which is very low. The Nova Scotia Banks extend nearly seventy leagues in a westerly direction from the Isle of Sable: They are from twenty to twenty-five leagues wide, and their inner edges are from fourteen to eighteen leagues off shore. They are intersected by narrow winding channels (the bottom of which is mud) running north-west and south-east: Between these banks and the shore are several small inner banks with deep water and muddy bottom. The water deepens regularly from the Isle of Sable to the distance of twenty-two leagues, in fifty fathoms, fine gravel; thence proceeding westward, the gravel becomes coarser. At the distance of twenty-three leagues, and south from Prospect Harbour you have from thirty to thirty-five fathoms of water, large stones; and continuing westward to the western extremity of the banks, the soundings are rocky and shoal to eighteen and fifteen fathoms, Cape Sable bearing north by west, distance fifteen leagues. The south-west extremity of Bank Quero lies twenty-six miles east-north-east half north from the east end of the Isle of Sable. This bank extends E by N thirty-five leagues, and is near eight leagues in width; its shoalest part is about five leagues from its eastern extremity in fifteen and eighteen fathoms of water, slimy sand and clambs; from whence it deepens regularly every way to to sixty and seventy fathoms of water towards the edges of the bank. The bank is steep to, and from its soundings on the north side you fall immediately in ninety or one hundred of water black mud, and in one hundred and twenty fathoms on the south side.
* I have described these bars such as I found them; but as they are composed of shifting sands, repeated storms, and the violence of the sea, may in a course of years considerably alter their form or extent.
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