scholarly journals Assessment of Capstone Geology Mapping Course: Outdoor, Experiential Learning

Author(s):  
Julia Nord ◽  
Giuseppina Kyser Mattietti

Geologists often state that “the best geologist is the one who sees the most rocks”, however, there is little to no documentation that directly supports this claim.  Very little has been done on assessment of field based, experiential learning classes except in the fields of outward bound and outdoor leadership.  All GMU students in BA Geology and BS Earth Science must take GEOL404 Geological Field Techniques.  Students spend 6 weeks in the field mapping (individually and in teams) the local geology to interpret the geologic history of the area. It is an interesting course to assess as students can take either a GMU-offered course, ran jointly with UNC, Chapel Hill, or another  equivalent course offered by a USA University. This gives a unique perspective on the student’s perceived preparation with respect to students from other Universities.  The SENCER-SALG tool is  used to examine student learning, engagement and long-term habit-forming outcomes. Students attending Field camp in 2013 complete a pre and post survey.  Students from past years complete a survey with  questions relating to pre and post Field Camp, and their views 2-3 years post field camp. This study offers a framework for assessing other field based courses in applied disciplines.

Author(s):  
Shinwan Kany ◽  
Johannes Brachmann ◽  
Thorsten Lewalter ◽  
Ibrahim Akin ◽  
Horst Sievert ◽  
...  

Abstract Background Non-paroxysmal (NPAF) forms of atrial fibrillation (AF) have been reported to be associated with an increased risk for systemic embolism or death. Methods Comparison of procedural details and long-term outcomes in patients (pts) with paroxysmal AF (PAF) against controls with NPAF in the prospective, multicentre observational registry of patients undergoing LAAC (LAARGE). Results A total of 638 pts (PAF 274 pts, NPAF 364 pts) were enrolled. In both groups, a history of PVI was rare (4.0% vs 1.6%, p = 0.066). The total CHA2DS2-VASc score was lower in the PAF group (4.4 ± 1.5 vs 4.6 ± 1.5, p = 0.033), while HAS-BLED score (3.8 ± 1.1 vs 3.9 ± 1.1, p = 0.40) was comparable. The rate of successful implantation was equally high (97.4% vs 97.8%, p = 0.77). In the three-month echo follow-up, LA thrombi (2.1% vs 7.3%, p = 0.12) and peridevice leak > 5 mm (0.0% vs 7.1%, p = 0.53) were numerically higher in the NPAF group. Overall, in-hospital complications occurred in 15.0% of the PAF cohort and 10.7% of the NPAF cohort (p = 0.12). In the one-year follow-up, unadjusted mortality (8.4% vs 14.0%, p = 0.039) and combined outcome of death, stroke and systemic embolism (8.8% vs 15.1%, p = 0.022) were significantly higher in the NPAF cohort. After adjusting for CHA2DS2-VASc and previous bleeding, NPAF was associated with increased death/stroke/systemic embolism (HR 1.67, 95% CI 1.02–2.72, p = 0.041). Conclusion Atrial fibrillation type did not impair periprocedural safety or in-hospital MACE patients undergoing LAAC. However, after one year, NPAF was associated with higher mortality. Graphic abstract


Science ◽  
2019 ◽  
Vol 365 (6452) ◽  
pp. 469-473 ◽  
Author(s):  
Nir Galili ◽  
Aldo Shemesh ◽  
Ruth Yam ◽  
Irena Brailovsky ◽  
Michal Sela-Adler ◽  
...  

The oxygen isotope composition (δ18O) of marine sedimentary rocks has increased by 10 to 15 per mil since Archean time. Interpretation of this trend is hindered by the dual control of temperature and fluid δ18O on the rocks’ isotopic composition. A new δ18O record in marine iron oxides covering the past ~2000 million years shows a similar secular rise. Iron oxide precipitation experiments reveal a weakly temperature-dependent iron oxide–water oxygen isotope fractionation, suggesting that increasing seawater δ18O over time was the primary cause of the long-term rise in δ18O values of marine precipitates. The18O enrichment may have been driven by an increase in terrestrial sediment cover, a change in the proportion of high- and low-temperature crustal alteration, or a combination of these and other factors.


1963 ◽  
Vol 14 (1) ◽  
pp. 93 ◽  
Author(s):  
GP Davey ◽  
JSF Barker

(i) The structure and genetic history of the pedigree Hereford breed in Australia are analysed by pedigree sampling methods. (ii) The pattern of the breed structure is generally similar to that found in other breeds, but it is extremely dynamic owing to the present rapid expansion of the breed. Changes are taking place in the herd composition of the major breeders' groups and there are many new herds yet to find their level in the structure. (iii) Considerable emphasis has been placed on the use of imported animals in the development of the breed. Of all herds registering in Volume 24 of the herd book, 31.6% used imported sires, and the percentage of genes in the breed in 1949 derived from animals imported since 1880 was 97.7, and from animals imported since 1930, 53.9%. (iv) The most important herd in 1949 made a genetic contribution to the breed of 33.1%, while the contributions of the four next most important herds were 17.4, 10.1, 7.4, and 6.1%. In the four-generation pedigrees from which these figures were derived, the contribution of imported animals was 56.1%. (v) The animal with the highest relationship to the breed was Free Town Director (Imp.), with direct relationships of 5.6 and 9.2% to the 1941 and 1949 samples respectively. Of the 16 sires and one dam whose direct relationships are 3.0% or more in any of the three sample years, 12 sires were imported. (vi) The total inbreeding in 1949 (base year 1880) was 2.6%. This comprised 0.2% current inbreeding, 1.6% long-term inbreeding, and 0.8% strain inbreeding. There was no evidence of subdivision of the breed into separate strains. (vii) The effective generation length has decreased since 1930 to about 5.5 years in the 1949–50 sample. Nearly 50% of the animals in this sample were sired by bulls 4 years old or younger, while about 33% were from dams 4 years old or younger. (viii) Bulls from major breeders' herds are used widely throughout the breed, while about 90% of sires and 45% of dams were bred in herds other than the one in which they were used. Therefore, it is unlikely that there is much genetic variation between herds.


2019 ◽  
Vol 8 ◽  
Author(s):  
Susan M Kenyon

Drawing on long-term ethnographic research in the Blue Nile town of Sennar, supported by archival and historical documentation, this article explores the history of Zar spirit possession in Sudan, and the light this throws on the interplay of religions over the past 150 years. Life history data supports the argument that contemporary Zar is grounded in forms and rituals derived from the ranks of the ninteenth-century Ottoman army, and these remain the basis of ritual events, even as they accommodate ongoing changes in this part of Africa. Many of these changes are linked to the dynamic interplay of Zar with forms of Islam, on the one hand, and Christianity, on the other. In the former colonial periods, political power resided with the British, and Khawaja (European) Christian Zar spirits are remembered as far more important. Today that authority in Zar has shifted to spirits of foreign Muslims and local holy men, on the one hand, and to subaltern Blacks, on the other. These speak to concerns of new generations of adepts even as changes in the larger political and religious landscapes continue to transform the context of Zar.


The details of biography and scientific works of Boris Valkh (1876–1942), one of the leading zoologists who worked in eastern Ukraine in the first half of the 20th century, were analysed. Boris Valkh worked at the interface of zoology, plant protection, and epidemiology and he was a leading specialist in controlling the abundance of economically important groups of rodents and insects (plant protection stations) and an epidemiologist (studying zoonoses). At the same time, he was a nature protector, one of the key organizers of nature reserves in the southeast of Ukraine (Kamiani Mohyly, Bilosaraiska Kosa). The main attention in this review is paid to Valkh's research into zoology (ornithology, entomology, and theriology), and his work upon creation of zoological collections, including the one in the Bakhmut Museum of Local Lore, which was organized with his participation. All of these developments made by the scientist are considered along with details of his biography analysed using family archives and by conversations with Valkh’s descendents, including his grandson Boris Valkh, granddaughter Olympiada Gryshchenko, and great-grandson Sergei Valkh. Significant clarifications and important additions to the biography of Boris Valkh have been made, in particular regarding his education (once in Pavlohrad Gymnasium and twice in Kharkiv University), wife and children, as well as his long-term trips to Turkestan and Azerbaijan. The location of "Hory-Mohyly hamlet", from which most of the zoological samples collected by the Valkhs are derived, is clarified and determined as the same place that was marked on ancient maps as "Horemohylove" The history of the species Mus sergii described by Boris Valkh and its type locality were analysed. The information about the history of accumulation and further fate of his and his son Sergey’s zoological collections including mammal specimens from Hory-Mohyly is summarized. Unique original photographs from the family archives have been used, for most of which the dates and places of taking were determined. Pictures of collections and original zoological labels are also presented.


2020 ◽  
Vol 38 (2) ◽  
pp. 43-73
Author(s):  
Rainer Schreg

The perspectives on the medieval village and on the historical role of peasants have changed throughout the history of research. Traditional views on history saw rural life as unchangeable and therefore presumed that villages were rooted in the migration period. Modern research recognised the formation of the medieval village as a complex long-term process that, depending on the region, culminated in the 11th – 13th century. This paper takes a closer look at the situation in southwestern Germany, analysing research history on the one hand and selected episodes of medieval rural history on the other. The paper suggests that due to traditional views on the structure of history, peasants’ agency has been undervalued.  


2010 ◽  
Vol 5 (1) ◽  
Author(s):  
Daniel Lunney

Cities and nature may seem mutually exclusive, but the animal inhabitants, both native and introduced, from pets to pests, are a major component of city life. Using Sydney as an example, this paper takes a critical look at cities and nature, more narrowly zoology, with a long-term view, i.e. one with intergenerational equity in mind. In the rapid conversion of bush to farmland, then suburbs and industrial areas, flora and fauna have not been given a strong voice. We need a new ethic for this new urban ecosystem, one which encompasses dealing with exotic species, pests and vermin on the one hand, and relic native animal populations on the other. Plans for sustainability in environment, economics and society need to recognise that these are interrelated subjects, not separate entities. I argue that knowing the natural history of Sydney is integral to understanding the city, its history, and its sustainability.


2017 ◽  
Vol 16 (3) ◽  
pp. 134
Author(s):  
Géza Antal Entz

A tanulmány amellett érvel, hogy eredményes város- és településfejlesztés, csak úgy képzelhető el, ha azt a mai szükségletek felmérésén túl az épített és természeti környezet komplex ismeretére alapozzák. A legtöbb nyugat-európai országban a hosszú távú és folyamatos műemléki topográfiai kutatómunka biztosítja az ehhez szükséges tudás és ismeretek szilárd alapját. A magyar műemlékvédelem másfél százados története során szintén voltak figyelemre méltó erőfeszítések annak érdekében, hogy az ország műemlékeinek, illetve tágabban műemléki értékeinek kor-szerű és többé-kevésbé naprakész kataszterét megalkossák, de ezzel a szükséges szakmai mélységben sohasem sikerült a teljes ország teljes területét lefedni és az 1950 és az 1980-as évek vége közötti periódustól eltekintve, a vállalkozás mindig csak részlegesen, gyakori megszakításokkal és hosszú szünetekkel valósulhatott meg. Az 1990-ben bekövetkezett politikai rendszerváltozás után minden szakmai érv amellett szólt, hogy újrainduljon a magyarországi műemléki értékállomány rend-szerelvű számbavétele. A magyar épített örökség jellegzetességei alapján a topográfiai számbavétel szempontjából szóba jövő objektumok száma jelenleg 300.000-re becsülhető. Ezt a célt szem előtt tartva a tanulmány tömör, átfogó képet ad Német-ország, Ausztria, Svájc, Franciaország és érintőlegesen Anglia példáján a műemléki inventarizáció, illetve topográfia európai, elsősorban kontinentális fejlődéséről, aláhúzva a műemléki topográfia és a műemlékvédelem elméleti és gyakorlati kihívásai közti szoros összefüggést és a társadalmi háttér jelentőségét. --- Inventorization of Monuments and Making Accessible the Built Heritage The author argues, that any kind of settlement or town development needs the complex and thorough knowledge of the built and natural environment in question. The long term and continuous research in the field of monument’s inventorization has provided the solid foundation for all these aspects of knowledge in most of the western European countries for more than a century. In the course of the one and a century old history of monuments protection in Hungary there were also notable efforts to create an up-to-date and updated inventory of every kind of monument in the country, but it never managed to cover the territory as a whole to the required professional depth, and apart from a period from1950 to the end of the 1980s the project was fulfilled only partially, interrupted many times and with protracted gaps. After the change in the political system in 1990 all the professional arguments promote the effort to restart the systematic inventorization of the monumental substance of Hungary. According to the characteristics of the built heritage, in Hungary the number of the objects which today have to be taken into consideration might be estimated as being as many as 300,000. In favour of this ambition the study provides a concise overview of the historical development of the European, primarily continental development of monuments inventorization (Germany, Austria, Switzerland, France and superficially England), underlining the connection between the inventorization and the practical and theoretical challenges of monuments protection, and their societal background.Keywords: inventorization of monuments, built heritage, Inventory of Historical Monuments, protection of monuments


1960 ◽  
Vol 11 (6) ◽  
pp. 1072 ◽  
Author(s):  
JSF Barker ◽  
GP Davey

(i) The breed structure and genetic history of the pedigree Poll Hereford breed in Australia are analysed by pedigree sampling methods. (ii) The basic pattern of the breed structure is similar to that found in other studies, but it is both diffuse and dynamic owing to the present rapid expansion of the breed. There are a number of herds moving into the major breeders' group and there are many new herds yet to find their level in the structure. (iii) An attempt is made to determine why particular herds become major breeders' herds. It is suggested that the use of imported animals is important, while there is evidence that those herds apparently moving into this group show a higher degree of selective registration of males. The relationship between herd size and importance of the herd is considered. (iv) The breed has developed since 1920 entirely from imported Poll Hereford and from imported and Australian-bred horned (pedigree Hereford) animals. The percentages of genes in the breed in 1949 derived from these animals are 64.3 and 35.7 per cent. respectively. (v) The most important herd in 1949 has a genetic contribution to the breed of 26.9 per cent. However, the genetic contributions of the four next most important herds are only 6.7, 6.1, 5.1, and 4.5 per cent. In the four-generation pedigrees from which these figures are derived, the genetic contributions of imported and horned animals are respectively 56.3 and 36.6 per cent. (vi) The animal with the highest relationship to the breed is Woodrow 1st (imp.), with direct relationships of 2.0 and 9.3 per cent. to the 1937 and 1949 samples respectively. Of the 14 sires and three dams whose direct relationships are 3.0 per cent. or over in either of the two sample years, nine sires and two dams are imported but none is horned. (vii) The degree of inbreeding (base year 1920) is calculated. The total inbreeding in 1949 (1.8 per cent.) comprises 0.8 per cent. current inbreeding, 0.6 per cent. long-term inbreeding, and 0.4 per cent. strain inbreeding. There is no evidence of subdivision of the breed into separate strains. (viii) The effective generation length is approximately 5.5 years. Nearly 50 per cent. of the animals in the 1949-50 sample are sired by bulls 4 years old or younger, while nearly 40 per cent. are from dams 4 years old or younger. (ix) It is not likely that there is much genetic variation between herds. Bulls from major breeders' herds are used widely throughout the breed while about 80 per cent. of sires and 60 per cent. of dams are bred in herds other than the one in which they are used.


Urban History ◽  
1980 ◽  
Vol 7 ◽  
pp. 12-22 ◽  
Author(s):  
Daniel Roche

In the last ten years, a significant development in the study of urban history has allowed French historians to begin to consider some of the problems which have preoccupied their foreign colleagues, notably in Britain and the United States, for some time. The attraction of the town for the French historian is due, clearly enough, to two main factors. On the one hand, the town's growing dominance over the location of employment and population is bound to attract attention—in 1980 80 per cent of the population of France live in towns, exactly reversing the distribution of 200 years ago. On the other hand, this same distension of the town demands historical attention. It places the town at the centre of a very long-term development in which the urban criterion becomes increasingly dominant, defining a particularly appropriate field for the measurement of the linking mechanisms which regulate relationships between the different levels of social reality. Urbanity, in short, brings together the whole gamut of questions posed by the development of our system of civilization over the centuries. To reconstruct its history is to indulge in nostalgia for a past which appears all the richer in comparison with the drabness of our own day. It is also to dream of a city of the future, capable of reconciling community and social control, nature and culture. In France the history of towns is inseparable from a long process of examination which began with the humanist enthusiasm for the city, continued through the speculations of the Enlightenment and the tentative researches of nineteenth-century local anti-quarians, and has recently been supplemented by the more precise discoveries of the urban historian.


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