VARIATIONAL METHODS FOR IMAGE DEBLURRING AND DISCRETIZED PICARD\u27S METHOD

In this digital age, it is more important than ever to have good methods for processing images. We focus on the removal of blur from a captured image, which is called the image deblurring problem. In particular, we make no assumptions about the blur itself, which is called a blind deconvolution. We approach the problem by miniming an energy functional that utilizes total variation norm and a fidelity constraint. In particular, we extend the work of Chan and Wong to use a reference image in the computation. Using the shock filter as a reference image, we produce a superior result compared to existing methods. We are able to produce good results on non-black background images and images where the blurring function is not centro-symmetric. We consider using a general Lp norm for the fidelity term and compare different values for p. Using an analysis similar to Strong and Chan, we derive an adaptive scale method for the recovery of the blurring function. We also consider two numerical methods in this disseration. The first method is an extension of Picards method for PDEs in the discrete case. We compare the results to the analytical Picard method, showing the only difference is the use of the approximation versus exact derivatives. We relate the method to existing finite difference schemes, including the Lax-Wendroff method. We derive the stability constraints for several linear problems and illustrate the stability region is increasing. We conclude by showing several examples of the method and how the computational savings is substantial. The second method we consider is a black-box implementation of a method for solving the generalized eigenvalue problem. By utilizing the work of Golub and Ye, we implement a routine which is robust against existing methods. We compare this routine against JDQZ and LOBPCG and show this method performs well in numerical testing

The Ursinus Weekly, July 17, 1944

First decks play ball tonight in starting game of schedule • Library will present concert this evening • Actors plan play; dramatists have new regulations • Committee plans summer schedule • V-12 men now outnumber civilians as summer semester opens here • Assembly to be held on campus August 7-14 • Students elect WSGA leader • Y projects vary • Norristown pastor addresses Y Sunday vespers service • Andrew Rihl buys Highland Hall twenty years college property • Starer enters V-12 from Pacific area • Customshttps://digitalcommons.ursinus.edu/weekly/1685/thumbnail.jp

The Ursinus Weekly, January 31, 1944

Jackie Loughead will play at sailors\u27 quarterdeck hop • Jupiter Laughs scores campus hit regardless of failure on Broadway • Dr. White will lead discussion on labor • Speaker stresses nurses\u27 education • Dr. Shumaker addresses students at vesper service • Dr. James Dean to speak to pre-medical society • Mrs. Noble will discuss music with French Club • Wednesday dances begin again • Schedule classes this week • Sally Deibler sells $334 in war bonds for second place • February 29 is deadline for next issue of Lantern • German Club will feature group singing at meeting • Y to sponsor comedy team at annual valentine party • Education open to war prisoners through universities of captivity • Music Club features jazz and swing discussions • The Light that Failed to be shown Friday night • Emily Williams to review book • Life in the Navy • Team jolts Philadelphia Marine Depot for bears\u27 fifth consecutive win • Jack Miller sinks free throw in thrilling finish for Ursinus • Girls\u27 team to meet Albright and Rosemont in games this weekhttps://digitalcommons.ursinus.edu/weekly/1723/thumbnail.jp

The Ursinus Weekly, April 24, 1944

New swing band plays sweet and hot as large student audience approves • Haines to head Lantern; new staff will take over • Betty Umstad rules as queen of prom at junior dance • Author tells theme of May pageant • Students will try out for operetta this week • Max Lerner to speak on May 10 at forum • Youth of today have same courage as did heroic pioneers of yesteryear • Dr. Leinbach describes recent surgical progress • English Club members hear review of the American • Pastor vacations in Florida • IRC hears Pan American talk • Freshmen entertain club with take-offs on members • Baby buffalo learn manners at college • Navy flier writes about importance of knowing weather for all pilots • Ursinus nine loses to Swarthmore, 8-3 • Day study defeats Shreiner sextette for basketball cup • Tennis team looks ahead to another good season • McClure releases figures on post-war prospectshttps://digitalcommons.ursinus.edu/weekly/1730/thumbnail.jp

The Ursinus Weekly, April 17, 1944

Curtain Club chooses comedy, Junior Miss for May production • Juniors to present A spring night at annual prom this Friday evening • Girls will present The land of Oz • John McClellan named first vice-president for coming convention • Organized peace is not impossible say college students • Barbara Cooke to sing in recital tonight • Women debaters to travel to Albright College • Dr. Baker stresses need for teachers • Brotherhood sponsors devotional at Trinity • Dr. H. M. Leinbach to speak to pre-medical society • Students enjoy barn dance • Swing band to make debut at music club meeting • Civilian pre-meds to take aptitude test on April 28 • Class of \u2737 grad receives silver star citation • Ursinus circle presents dishes for infirmary • Students see Topper movie • AAUW holds session • Cranston started interesting life as a traveling salesman • Five seniors head girls\u27 softball lineup • Day study downs Maples in interdorm basketball • Grace Nesbitt leads day in victory over Shreiner • Ursinus bows to Navy baseball team in season\u27s opener on Annapolis field • Bears to play PMC Saturday • Ethel Detwiler marries • Justine Richards engaged • Frosh Phys Eds to entertainhttps://digitalcommons.ursinus.edu/weekly/1729/thumbnail.jp

The Ursinus Weekly, March 20, 1944

Hudson stresses Christian division from rest of world • YM-YWCA to welcome frosh and Navy at Holiday Inn • Lorelei scores a hit with everyone as girls catch men for dance dates • List of new students includes 13 civilians and 9 fleet sailors • Delta Tau pledges twelve new members • Freshman girls get colors at ceremony • Girls vote tomorrow for 1944 May queen • Y\u27s to present musicale with theme of holy week • Mr. D. L. Helfferich heads post-war planning group • WSGA launches drive for Red Cross here • Old man experience gives pointers to both sexes for next turn-about • Betsy Schumaker \u2746, leads Wednesday Lenten service • Ursinus debaters to meet Moravian men on Friday • Justine Richards to report on pan-American highway • German Club will have banquet at Kopper Kettle in April • Coeds down Drexel in low-scoring tilt on Ursinus court • Basketball girls win close contest with college of Chestnut Hill team • Sextette will meet Temple team Thursday • Shirley Klein paces J.V.\u27s against Chestnut Hill • Captain Halbruegge leads second team in easy win • Shreiner and Glenwood win in intramural basketballhttps://digitalcommons.ursinus.edu/weekly/1727/thumbnail.jp

The Ursinus Weekly, May 1, 1944

Senate proposes government plan with revised laws • Whelan describes sinking of Wasp • Characters selected for May Day pageant • Junior Miss, former Broadway success, to be presented here May 19 and 20 • Max Lerner to talk here next week • Haines gives views about immortality • Thespians present The Streets of Hell • Carol Swartley married Saturday to Frank Miller • Lantern reorganizes Creative Writing Club • Mrs. F. I. Sheeder addresses prospective college girls • Martha Franklin, friend of campus boys, is awarded good neighbor orchid • Women\u27s dorm committee to take corsage orders • Mrs. May H. Rauch dies after 18 years at college • Intersorority dance, May 13 • Students to see Beau Geste • Tennis courts • Physical education majors attend conference in New York City • Bears bow before Muhlenberg team 7-4 in first home game on Saturday • Roy Walz killed in Texas accident • Ursinus nine blasts Hill • Social work scholarship open to college grads • Co-eds to review books • IRC to discuss the Orient • Floor show lures students to mealshttps://digitalcommons.ursinus.edu/weekly/1731/thumbnail.jp

Evaluating teaching effectiveness in nursing education:An Iranian perspective

BACKGROUND: The main objective of this study was to determine the perceptions of Iranian nurse educators and students regarding the evaluation of teaching effectiveness in university-based programs. METHODS: An exploratory descriptive design was employed. 143 nurse educators in nursing faculties from the three universities in Tehran, 40 undergraduate, and 30 graduate students from Tehran University composed the study sample. In addition, deans from the three nursing faculties were interviewed. A researcher-developed questionnaire was used to determine the perceptions of both faculty and students about evaluating the teaching effectiveness of nurse educators, and an interview guide was employed to elicit the views of deans of faculties of nursing regarding evaluation policies and procedures. Data were analyzed using parametric and nonparametric statistics to identify similarities and differences in perceptions within the Iranian nurse educator group and the student group, and between these two groups of respondents. RESULTS: While faculty evaluation has always been a major part of university based nursing programs, faculty evaluation must be approached more analytically, objectively, and comprehensively to ensure that all nursing educators receive the fairest treatment possible and that the teaching-learning process is enhanced. CONCLUSION: Educators and students stressed that systematic and continuous evaluation as well as staff development should be the primary goals for the faculty evaluation process. The ultimate goals is the improvement of teaching by nurse educators

The next generation fungal diversity researcher

Fungi are more important to our lives than is assumed by the general public. They can comprise both devastating pathogens and plant-associated mutualists in nature, and several species have also become important workhorses of biotechnology. Fungal diversity research has in a short time transcended from a low-tech research area to a method-intensive high-tech discipline. With the advent of the new genomic and post-genomic methodologies, large quantities of new fungal data are currently becoming available each year. Whilst these new data and methodologies may help modern fungal diversity researchers to explore and discover the yet hidden diversity within a context of biological processes and organismal diversity, they need to be reconciled with the traditional approaches. Such a synthesis is actually difficult to accomplish given the current discouraging situation of fungal biology education, especially in the areas of biodiversity and taxonomic research. The number of fungal diversity researchers and taxonomists in academic institutions is decreasing, as are opportunities for mycological education in international curricula. How can we educate and stimulate students to pursue a career in fungal diversity research and taxonomy and avoid the situation whereby only those few institutions with strong financial support are able to conduct excellent research? Our short answer is that we need a combination of increased specialization and increased collaboration, i.e. that scientists with specialized expertise (e.g., in data generation, compilation, interpretation, and communication) consistently work together to generate and deliver new fungal knowledge in a more integrative manner – closing the gap between both traditional and modern approaches and academic and non-academic environments. Here we discuss how this perspective could be implemented in the training of the ‘next generation fungal diversity researcher’