scholarly journals Ensemble mean density and its connection to other microphysical properties of falling snow as observed in Southern Finland

2016 ◽  
Vol 9 (9) ◽  
pp. 4825-4841 ◽  
Author(s):  
Jussi Tiira ◽  
Dmitri N. Moisseev ◽  
Annakaisa von Lerber ◽  
Davide Ori ◽  
Ali Tokay ◽  
...  
Keyword(s):  
Snow Depth ◽  
The Other ◽  
Snow Density ◽  
Fall Velocity ◽  
Microphysical Properties ◽  
Ensemble Mean ◽  
Median Volume ◽  
Density Values ◽  
The University ◽  
Characteristic Mass

Abstract. In this study measurements collected during winters 2013/2014 and 2014/2015 at the University of Helsinki measurement station in Hyytiälä are used to investigate connections between ensemble mean snow density, particle fall velocity and parameters of the particle size distribution (PSD). The density of snow is derived from measurements of particle fall velocity and PSD, provided by a particle video imager, and weighing gauge measurements of precipitation rate. Validity of the retrieved density values is checked against snow depth measurements. A relation retrieved for the ensemble mean snow density and median volume diameter is in general agreement with previous studies, but it is observed to vary significantly from one winter to the other. From these observations, characteristic mass–dimensional relations of snow are retrieved. For snow rates more than 0.2 mm h−1, a correlation between the intercept parameter of normalized gamma PSD and median volume diameter was observed.

scholarly journals Bulk density and its connection to other microphysical properties of snow as observed in Southern Finland

2016 ◽  
Author(s):  
Jussi Tiira ◽  
Dmitri N. Moisseev ◽  
Annakaisa von Lerber ◽  
Davide Ori ◽  
Ali Tokay ◽  
...  
Keyword(s):  
Particle Size ◽  
Bulk Density ◽  
Snow Depth ◽  
The Other ◽  
Fall Velocity ◽  
Microphysical Properties ◽  
Median Volume ◽  
Density Values ◽  
The University ◽  
Characteristic Mass

Abstract. In this study measurements collected during winters 2013/2014 and 2014/2015 at the University of Helsinki measurement station in Hyytiälä are used to investigate connections between snow bulk density, particle fall velocity and parameters of the particle size distribution (PSD). The bulk density of snow is derived from measurements of particle fall velocity and PSD, provided by a particle video imager, and weighing gauge measurements of precipitation rate. Validity of the retrieved density values is checked against snow depth measurements. A relation retrieved for bulk density and median volume diameter is in general agreement with previous studies, but observed to vary significantly from one winter to the other. From these observations, characteristic mass-dimensional relations of snow are retrieved. For snow rates more than 0.2 mm h−1, a correlation between the intercept parameter of normalized gamma PSD and median volume diameter was observed .

scholarly journals Inter-comparison of snow depth over sea ice from multiple methods

2020 ◽  
Author(s):  
Lu Zhou ◽  
Julienne Stroeve ◽  
Shiming Xu ◽  
Alek Petty ◽  
Rachel Tilling ◽  
...  
Keyword(s):  
Sea Ice ◽  
Snow Depth ◽  
Ground Truth ◽  
Significant Trend ◽  
Data Sets ◽  
Snow Density ◽  
Spatial And Temporal Scales ◽  
Danish Meteorological Institute ◽  
The University

Abstract. In this study, we compare eight recently developed snow depth products that use satellite observations, modeling or a combination of satellite and modeling approaches. These products are further compared against various ground-truth observations, including those from ice mass balance buoys (IMBs), snow buoys, snow depth derived from NASA's Operation IceBridge (OIB) flights, as well as snow depth climatology from historical observations. Large snow depth discrepancies between the different snow depth data sets are observed over the Atlantic and Canadian Arctic sectors. Among the products evaluated, the University of Washington snow depth product (UW) produces the overall deepest spring (March-April) snow packs, while the snow product from the Danish Meteorological Institute (DMI) provide the shallowest spring snow depths. There is no significant trend in the mean snow depth among all snow products since the 2000s, despite the great differences in regional snow depth. Two products, SnowModel-LG and the NASA Eulerian Snow on Sea Ice Model (NESOSIM), also provide estimates of snow density. Arctic-wide, these density products show the expected seasonal evolution with varying inter-annual variability, and no significant trend since the 2000s. The snow density in SnowModel-LG is generally higher than climatology, whereas NESOSIM density is generally lower. Both SnowModel-LG and NESOSIM densities have a larger seasonal change than climatology. Inconsistencies in the reconstructed snow parameters among the products, as well as differences between in-situ and airborne observations can in part be attributed to differences in effective footprint and spatial/temporal coverage, as well as insufficient observations for validation/bias adjustments. Our results highlight the need for more targeted Arctic surveys over different spatial and temporal scales to allow for a more systematic comparison and fusion of airborne, in-situ and remote sensing observations.

Inter-comparison of snow depth over sea ice from multiple methods

2020 ◽  
Author(s):  
Lu Zhou ◽  
Julienne Stroeve ◽  
Shiming Xu
Keyword(s):  
Sea Ice ◽  
Snow Depth ◽  
Ground Truth ◽  
Significant Trend ◽  
Data Sets ◽  
Snow Density ◽  
Spatial And Temporal Scales ◽  
Danish Meteorological Institute ◽  
The University

<p>In this study, we compare eight recently developed snow depth products that use satellite observations, modeling or a combination of satellite and modeling approaches. These products are further compared against various ground-truth observations, including those from ice mass balance buoys (IMBs), snow buoys, snow depth derived from NASA's Operation IceBridge (OIB) flights, as well as snow depth climatology from historical observations.</p><p>Large snow depth differences between data sets are observed over the Atlantic and Canadian Arctic sectors. Among the products evaluated, the University of Washington snow depth product (UW) produces the overall deepest Spring snow packs, while the snow product from the Danish Meteorological Institute (DMI) provide the shallowest Spring snow depths. There is no significant trend for mean snow depth among all snow products since the 2000s, however, those in regional varies larhely. Two products, SnowModel-LG and the NASA Eulerian Snow on Sea Ice Model: NESOSIM, also provide estimates of snow density. Arctic-wide, these density products show the expected seasonal evolution with varying inter-annual variability, and no significant trend since the 2000s. Compared to climatology, snow density from SnowModel-LG is generally denser, whereas that from NESOSIM is less. Both SnowModel-LG and NESOSIM densities have a larger seasonal change than climatology.</p><p>Inconsistencies in the reconstructed snow parameters among the products, as well as differences and with in-situ and airborne observations can in part be attributed to differences in effective footprint and spatial/temporal coverage, as well as insufficient observations for validation/bias adjustments. Our results highlight the need for more targeted Arctic surveys over different spatial and temporal scales to allow for a more systematic comparison and fusion of airborne, in-situ and remote sensing observations.</p>

Industrial Technology Graduates’ Acquired Skills and Competencies from the University

2019 ◽  
Vol 5 (3) ◽  
pp. 189
Author(s):  
Amado C Gequinto ◽  
Do Mads
Keyword(s):  
Social Media ◽  
Text Messaging ◽  
Global Market ◽  
The Other ◽  
Global Markets ◽  
Industrial Technology ◽  
The University ◽  
Descriptive Method

Skills and competencies are highly regarded in todays global market. Different agencies specifically those seeking for  technologists, technicians, and engineers, have stressed out that skills and competencies as major components  for individual workers.  This aimed to determine  the relevance and appropriateness of acquired skills and competencies by industrial technology graduates, and determine the extent of use of skills and competencies in the current employment. Review of related literatures and studies have been considered in the realization, understanding, analysis, and interpretation of this research exploration. A descriptive method of research was used with 78 graduates from 2015-2016 and 117 graduates from 2016-2017, who participated in the study survey process. The BatStateU Standardized Questionnaire was used to gather data. A brief interview and talk during the visit of alumni in the university was also considered, as well as the other means of social media like email, facebook, messenger, and text messaging.   Results show that skills and competecnices acquired by industrial technology graduates are all relevant and appropriate.  The study also found that there is some to great extent use of acquired skills and competencies to their current employment. The study implies that the acquired skills and competencies from the university significantly provided the graduates the opportunities ins the national and global markets and industries.

scholarly journals Higher Education and Sustainable Development Goals (SDG)—Potential Contribution of the Undergraduate Courses of the School of Social Sciences of the University of Évora

2021 ◽  
Vol 13 (4) ◽  
pp. 1828
Author(s):  
Elisa Chaleta ◽  
Margarida Saraiva ◽  
Fátima Leal ◽  
Isabel Fialho ◽  
António Borralho
Keyword(s):  
Social Sciences ◽  
Economic Growth ◽  
Sustainable Development ◽  
Sustainable Development Goals ◽  
Quality Education ◽  
The Other ◽  
Potential Contribution ◽  
Decent Work ◽  
Development Goals ◽  
The University

In this work we analyzed the mapping of Sustainable Development Goals in the curricular units of the undergraduate courses of the School of Social Sciences at the University of Évora. Of a total of 449 curricular units, only 374 had students enrolled in 2020/2021. The data presented refer to the 187 course units that had Sustainable Development Goals in addition to SDG4 (Quality Education) assigned to all the course units. Considering the set of curricular units, the results showed that the most mentioned objectives were those related to Gender Equality (SDG 5), Reduced Inequalities (SDG 10), Decent Work and Economic Growth (SDG 8) and Peace, Justice and Strong Institutions (SDG 16). Regarding the differences between the departments, which are also distinct scientific areas, we have observed that the Departments of Economics and Management had more objectives related to labor and economic growth, while the other departments mentioned more objectives related to inequalities, gender or other.

scholarly journals 4. On some Congenital Deformities of the Human Skull

1866 ◽  
Vol 5 ◽  
pp. 444-449
Author(s):  
Wm. Turner
Keyword(s):  
Natural History ◽  
Natural History Museum ◽  
The Other ◽  
History Museum ◽  
Human Skull ◽  
Congenital Deformities ◽  
Premature Closure ◽  
University Of Edinburgh ◽  
The University ◽  
Living Person

1st, Scaphocephalus.—After making reference to his previous papers, more especially to that in which he had described several specimens of the scaphocephalic skull, in which he had discussed the influence exercised on the production of deformities of the cranium, by a premature closure or obliteration of the sutures, and to the recent memoirs of Professor von Düben of Stockholm,† and Dr John Thurnam, the author proceeded to relate two additional cases of scaphocephalus to those he had already recorded. He had met with one of these in the head of a living person, the other in a skull in the Natural History Museum of the University of Edinburgh.

scholarly journals XXIII.—On the Disruptive Discharge of Electricity: An Experimental Thesis for the Degree of Doctor of Science, Department A

1878 ◽  
Vol 28 (2) ◽  
pp. 633-671 ◽  
Author(s):  
Alexander Macfarlane
Keyword(s):  
Copper Wire ◽  
Late Summer ◽  
The Other ◽  
Straight Line ◽  
Summer Session ◽  
The Difference ◽  
A Chain ◽  
The One ◽  
Metallic Parts ◽  
The University

The experiments to which I shall refer were carried out in the physical laboratory of the University during the late summer session. I was ably assisted in conducting the experiments by three students of the laboratory,—Messrs H. A. Salvesen, G. M. Connor, and D. E. Stewart. The method which was used of measuring the difference of potential required to produce a disruptive discharge of electricity under given conditions, is that described in a paper communicated to the Royal Society of Edinburgh in 1876 in the names of Mr J. A. Paton, M. A., and myself, and was suggested to me by Professor Tait as a means of attacking the experimental problems mentioned below.The above sketch which I took of the apparatus in situ may facilitate tha description of the method. The receiver of an air-pump, having a rod capable of being moved air-tight up and down through the neck, was attached to one of the conductors of a Holtz machine in such a manner that the conductor of the machine and the rod formed one conducting system. Projecting from the bottom of the receiver was a short metallic rod, forming one conductor with the metallic parts of the air-pump, and by means of a chain with the uninsulated conductor of the Holtz machine. Brass balls and discs of various sizes were made to order, capable of being screwed on to the ends of the rods. On the table, and at a distance of about six feet from the receiver, was a stand supporting two insulated brass balls, the one fixed, the other having one degree of freedom, viz., of moving in a straight line in the plane of the table. The fixed insulated ball A was made one conductor with the insulated conductor of the Holtz and the rod of the receiver, by means of a copper wire insulated with gutta percha, having one end stuck firmly into a hole in the collar of the receiver, and having the other fitted in between the glass stem and the hollow in the ball, by which it fitted on to the stem tightly. A thin wire similarly fitted in between the ball B and its insulating stem connected the ball with the insulated half ring of a divided ring reflecting electrometer.

Modern Catholic Perspectives Catholicism. The story of Catholic Christianity. By Gerald O'Collins and Mario Farrugia. Pp. xiii + 409 incl. 13 figs. Oxford: Oxford University Press, 2003. £63. 0 19 925994; 0 19 925995 X Priests, prelates and people. A history of European Catholicism since 1750. By Nicholas Atkin and Frank Tallett. Pp. x + 390. London–New York: I. B. Tauris, 2003. £25. 1 86064 665 4

2005 ◽  
Vol 56 (4) ◽  
pp. 749-753
Author(s):  
JEFFREY T. ZALAR
Keyword(s):  
New York ◽  
The Other ◽  
Systematic Theology ◽  
Oxford University ◽  
History Of ◽  
The University ◽  
Oxford University Press

Postmodern communitarian theory insists that all knowledge is participant knowledge: who we are is at least if not more foundational to learning than any philosophy of what we can know. These two books, one written by Jesuit priests and professors of systematic theology at the Gregorian University in Rome and the other by non-Catholic professional historians working at the University of Reading, invite us to consider this assertion.

scholarly journals BreakoutEDU: Helping students break out of their comfort zones

2018 ◽  
Vol 79 (2) ◽  
pp. 62 ◽  
Author(s):  
Susan Detwiler ◽  
Trudi Jacobson ◽  
Kelsey O’Brien
Keyword(s):  
The Other ◽  
Critical Inquiry ◽  
The University

If you’d walked by Professor Susan Detwiler’s Writing and Critical Inquiry (WCI) classrooms at the University at Albany-SUNY on September 7, you would have seen something rather unusual: two teams of students huddled around tables, preoccupied with locked boxes and an assortment of other materials. Engaged in animated, yet hushed, conversations to keep the other team from overhearing, the students puzzled over cryptic messages and secret codes, hoping to unlock the box and reveal what was inside. Some of the materials on the table provided clues, others turned out to be red herrings.

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