1,434 research outputs found
De tuberculis in fistula urinaria absumendis & curandis
No full textpro summis docturae medicae, honoribus & privilegiis, solemniter obtinendis, publicè iatrosophois ventilandas proponit Antonius Frey Esslingensis Würtemb. Ad diem 20. Octobris ... Promotore digniss. D.D. Martino Chmielecio a Chmielnik, phys. profess. p. acutiss.Enth. 30 ThesenTitelvariante nach VorlageDiss. med. Basel, 161
Research in engineering design: the role of mathematical theory and empirical evidence
No full textThe editors of this journal have offered an opportunity to
reply to Dr. Hazelrigg’s letter in depth. Indeed, with its
numerous points of critique of the paper ‘‘The Pugh Controlled
Convergence method’’ (Frey et al. 2009) stated so
strongly, the letter demands a detailed rebuttal. We provide
a response to the specific points discussed in the letter as
well as the broader issues raised. Writing on these topics
has been an opportunity to explore some issues of interest
to us, including the role of mathematical theory and
empirical science in design research. To pursue this fully,
additional authors participated to add more varied expertise
on social sciences, preference measurement, and industry
practices. We hope that our response will do more than
defend the paper; we hope that it will also suggest some
constructive paths forward in design research.National Science Foundation (U.S.) (grant #0448972
The turbulent dissipation rate from PIV measurements
No full textThe result of a particle-image velocimetry (PIV) measurement is a velocity field averaged over interrogation windows. This severely affects the measurement of small-scale turbulence quantities when the interrogation window size is much larger than the smallest length scale in turbulence. A direct measurement of the dissipation rate demands the measurement of gradients of the velocity field, which are now underestimated because the small-scale motion is not resolved. A popular procedure is to relate the statistical properties of the measured, but underresolved gradients to those of the true ones, invoking a large-eddy argument [3]. We show that the used proportionality constant, the Smagorinsky constant, should depend on the window overlap, on the used elements of the strain tensor, and on the way in which derivatives are approximate
How the dispersion of a droplet cloud depends on its initial size
No full textA cloud of droplets evolves under the influence of strong turbulence. The droplets are made from a phosphorescent fluid. From this cloud we select at t = 0 a narrow line by exciting the droplets with a UV laser, which causes them to glow for a few milliseconds. The dispersion of this line is followed in time using a fast intensified camera. A large range of droplet sizes (Stokes number St) was measured. It appears that lines with St \approx 1 disperse faster than a line of fluid tracers. Lines of droplets which are narrowest initially, spread fastest
Reverend William M. Paden, D.D.
No full textThis photograph is a portrait, featured in a publication, of Reverend William M. Paden, D.D. He is wearing a dark suit, light shirt, and a dark tie with polka dots. His hair is parted in the middle and he wears a mustache. He is also wearing wire-rimmed glasses. The background is a medium gray shade.The photograph is in good condition, except for a slight wrinkle in the bottom right corner. On the back the paper appears torn because of glue and there is a small pink spot in the bottom half of the photograph. The following text is printed at the bottom of the photograph: "Reverend William M. Paden D.D. Beloved, purposeful, Missioner of Good Cheer. Leader of Presbyterianism in Utah for thirty-four years, as Pastor, Executive, Author and Counselor. Together by the grace of God, we enter the forward-looking years, growing ever richer in Christian faith and service." The Archives, Giovale Library, Westminster College, has a collection of materials authored by William Paden and also materials about him. Additional biographic information about Dr Paden is available in: Brackenridge, R. Douglas. Westminster College of Salt Lake City. Logan, Utah: Utah State University Press, 1998, pp. 118, 121, 124, 140
On fully nonlinear CR invariant equations on the Heisenberg group
No full textAbstractIn this paper we provide a characterization of second order fully nonlinear CR invariant equations on the Heisenberg group, which is the analogue in the CR setting of the result proved in the Euclidean setting by A. Li and the first author in Li and Li (2003) [21]. We also prove a comparison principle for solutions of second order fully nonlinear CR invariant equations defined on bounded domains of the Heisenberg group and a comparison principle for solutions of a family of second order fully nonlinear equations on a punctured ball
OBILJEŽJA POSLOVANJA HOTELSKE GRUPACIJE VALAMAR RIVIERA D.D.
No full textU teorijskom dijelu rada se govori o oblicima hotelskih lanaca, njihovom načinu povezivanja, prednostima i nedostatcima hotelskih grupacija te se opisuju i grafički prikazuju vodeći hotelski lanci u Republici Hrvatskoj i svijetu. U praktičnom dijelu rada se analizira hotelska grupacija Valamar Riviera d.d. Ukratko se navode opće informacije o grupaciji te opisuje povijest kompanije. Pobliže se prikazuje i opisuje portfelj kompanije kao i njezine vrijednosti, govori se o društveno odgovornom poslovanju te o prodaji i kvaliteti grupacije. Navode se i obrađuju brendovi koji spadaju pod grupaciju. Pomoću primjera Dubrovnik President Hotela i Istra Premium Camping Resorta detaljno je analizirano i prikazano poslovanje hotelske grupacije Valamar Rivierra d.d. Također je prikazana i SWOT analiza hotelske grupacije Valamar Riviera d.d.In the theoretical part of this final paper the focus is on introducing different types of hotel chains, the way those businesses are formed and merged, and the main characteristics including advantages and flaws of such formations within the hotel industry. Additionally, the list of the main hotel chains in Croatia is provided, supplemented by photos. In the practical part, the author delves into the main focus of the thesis - hotel chain Valamar Riviera d.d. The company is described at length, and the history of the hotel chain is provided. The company's portfolio and its value is examined, and Valamar's sales figure and quality promise are listed. The company's social responsibility and promise is presented. Valamar also has multiple brands under its umbrella, all of which are analysed. In the final chapters, two brands are described at length - President Hotel and Istria Premium Camping Resort. Finally, a SWOT analysis of the hotel group is carried out
The Potentials of Recommender Systems Challenges for Student Learning
No full textIncreasingly, educators make use of learning-by-doing approaches to teach students
of STEM programmes the skills that they need to become successful in
careers in research and development. However, we argue that the technical
challenges addressed in these programmes are often too limited and therefore
do not support the students in gaining the more advanced skill sets required to
thrive in our technology-oriented economy. We therefore suggest to incorporate
realistic and complex challenges that model real-world problems faced in
industrial settings. Focusing on the domain of recommender systems, we see
potentials in embedding recommender systems challenges to enhance student
learning to teach students the skills required by modern data scientists
The Pugh Controlled Convergence Method: Model-Based Evaluation and Implications for Design Theory
No full textThis paper evaluates the Pugh Controlled Convergence method and its relationship to recent developments in design theory. Computer executable models are proposed simulating a team of people involved in iterated cycles of evaluation, ideation, and investigation. The models suggest that: 1) convergence of the set of design concepts is facilitated by the selection of a strong datum concept; 2) iterated use of an evaluation matrix can facilitate convergence of expert opinion, especially if used to plan investigations conducted between matrix runs; and 3) ideation stimulated by the Pugh matrices can provide large benefits both by improving the set of alternatives and by facilitating convergence. As a basis of comparison, alternatives to Pugh's methods were assessed such as using a single summary criterion or using a Borda count. These models suggest that Pugh's method, under a substantial range of assumptions, results in better design outcomes than those from these alternative procedures
- …
