Valparaiso University, known colloquially as Valpo, is a regionally accredited private university located in the city of Valparaiso, Indiana. The school was founded in 1859, and it now consists of five undergraduate colleges, a graduate school, a nursing school and a law school. Valparaiso University is owned and operated by the Lutheran University Association, a non-profit corporation, and is the largest independent Lutheran university in the United States. Wikipedia.
Rowland D.L.,Valparaiso University
Current Medical Research and Opinion | Year: 2011
Background: Premature ejaculation (PE) is the most common male sexual dysfunction, occurring in 2030% of men. Unlike erectile dysfunction, which increases with age, rates of PE remain constant across the adult life span. Objective: To review the prevalence of PE, its psychological sequelae and barriers to effective treatment, treatment options, and the effects of treatment on the psychological burden of PE. Methods: PubMed and Embase databases were searched to identify primary papers related to PE published between 1980 and 2010. Key words included premature ejaculation, prevalence, quality of life, interpersonal relationships, psychotherapy, drug therapy, and treatment barriers. Results: Men with PE often suffer from significant psychological distress including anxiety, depression, lack of sexual confidence, poor self-esteem, impaired quality of life, sexual dissatisfaction, and interpersonal difficulties. Due to various reasons, however, most men do not seek treatment for PE. Many physicians are unaware of the distressful nature of PE and might be reluctant to ask patients about their sexual function. Nevertheless, increasing clinical research on pharmacologic treatment of PE, and the use of on-demand orally administered short-acting selective serotonin reuptake inhibitors or topically applied local anesthetics, appears promising. Although few rigorous studies assessing psychotherapeutic treatments have been conducted, many clinicians report the success of psychological treatments for PE. Summary and conclusions: Conclusions drawn from this review are limited due to inherent variations across studies, including criteria to define PE, study designs, outcome measures, populations, survey instruments, and study settings. While the psychological distress associated with PE suggests the appropriateness of at least minimal counseling for couples, limited data are available to support a combined psychotherapeutic and pharmacologic treatment approach. The paucity of well-designed psychotherapy or combination studies represents an important unmet need in the treatment of PE. © 2011 Informa UK Ltd.
Richter A.G.,Valparaiso University |
Kuzmenko I.,Argonne National Laboratory
Langmuir | Year: 2013
We have employed in situ X-ray reflectivity (IXRR) to study the adsorption of a variety of proteins (lysozyme, cytochrome c, myoglobin, hemoglobin, serum albumin, and immunoglobulin G) on model hydrophilic (silicon oxide) and hydrophobic surfaces (octadecyltrichlorosilane self-assembled monolayers), evaluating this recently developed technique for its applicability in the area of biomolecular studies. We report herein the highest resolution depiction of adsorbed protein films, greatly improving on the precision of previous neutron reflectivity (NR) results and previous IXRR studies. We were able to perform complete scans in 5 min or less with the maximum momentum transfer of at least 0.52 Å-1, allowing for some time-resolved information about the evolution of the protein film structure. The three smallest proteins (lysozyme, cytochrome c, and myoglobin) were seen to deposit as fully hydrated, nondenatured molecules onto hydrophilic surfaces, with indications of particular preferential orientations. Time evolution was observed for both lysozyme and myoglobin films. The larger proteins were not observed to deposit on the hydrophilic substrates, perhaps because of contrast limitations. On hydrophobic surfaces, all proteins were seen to denature extensively in a qualitatively similar way but with a rough trend that the larger proteins resulted in lower coverage. We have generated high-resolution electron density profiles of these denatured films, including capturing the growth of a lysozyme film. Because the solution interface of these denatured films is diffuse, IXRR cannot unambiguously determine the film extent and coverage, a drawback compared to NR. X-ray radiation damage was systematically evaluated, including the controlled exposure of protein films to high-intensity X-rays and exposure of the hydrophobic surface to X-rays before adsorption. Our analysis showed that standard measuring procedures used for XRR studies may lead to altered protein films; therefore, we used modified procedures to limit the influence of X-ray damage. © 2013 American Chemical Society.
Agency: NSF | Branch: Continuing grant | Program: | Phase: WORKFORCE IN THE MATHEMAT SCI | Award Amount: 279.59K | Year: 2013
The Department of Mathematics & Computer Science at Valparaiso University will host the summer REU site, Valparaiso Experience in Research by Undergraduate Mathematicians (VERUM). VERUM will recruit nine undergraduate students each year. These students will work in teams of three for nine weeks on solving open problems in combinatorics, biomathematics, or statistics. Each group will work with a different project director who will provide guidance and feedback to the students on a daily basis. In each project, the participants will investigate open questions of interest to the larger mathematical community, and therefore yield potentially publishable results. Most of the participants will be students from primarily undergraduate institutions who have not yet decided on a graduate school career path. Therefore we will target undergraduates for a first research experience in mathematics. Additional attention will be given to recruiting participants from groups under-represented in STEM, including first-generation college students since they also will have had less exposure to academic values and processes than their peers.
By modeling the research experience of a mathematician, the program will produce students engaged with, and prepared to join, the mathematical community. The program will emphasize the professional development of the students while encouraging them to pursue mathematics related careers and graduate studies thus increasing the participation of traditionally underrepresented groups in STEM disciplines. Students will become part of a small professional group that will provide support during their undergraduate careers and beyond. As part of the program a graduate student will also act as a mentor for the participants and the students will visit graduate schools to learn about the lives of graduate students in different types of institutions. The students will also be exposed to different areas of mathematics by following the progress of each research group and by listening to and interacting with weekly visitors to the program. VERUM participants will increase their communication and presentation skills through weekly group presentations, presentations at local and national conferences and through writing a final project report.
Agency: NSF | Branch: Continuing grant | Program: | Phase: GALACTIC ASTRONOMY PROGRAM | Award Amount: 259.70K | Year: 2014
Over billions of years, stars similar to our sun evolve to form red giants that eventually eject their outer shells, forming planetary nebulae (PNe). Planetary nebulae play an important role in the chemical evolution of the galaxy by returning material created within stars to create brand-new stars. The transition from red giant to planetary nebula is an important but relatively short-lived stage of stellar evolution, lasting only a few hundred thousand years. The goal of this proposal is to study the basic physical properties of objects in this transition phase that are referred to as proto-planetary nebulae (PPNe). This project will use a variety of observations and techniques to carry out this study.
PPNe represent intermediate mass objects in the late stages of stellar evolution that are transitioning from Asymptotic Giant Branch (AGB) stars to PNe. The proposal will continue and extend an existing program of photometric and radial velocity measurements of post-AGB stars and PPNe within our own galaxy and in the nearby Large and Small Magellanic Cloud galaxies. The combination of photometric light curves, color measurements, and radial velocities will permit the direct determination of fundamental parameters like stellar radius and luminosity. In addition, stellar pulsation models will be used to constrain the mass and luminosity of the PPNe. Finally, the program will investigate the degree of binarity in PPNe and its effect on the shaping of PNe.
This Research in Undergraduate Institutions (RUI) project will provide numerous and wide-ranging opportunities for the training of new scientists, the education of liberal arts students, and the science infrastructure at the PIs institution. The project will communicate its results to the public through open houses held at the observatory on the campus of the PIs home institution. The PI will continue to give community and professional lectures and will incorporate the results of the research into those presentations.
Longan M.W.,Valparaiso University
Cultural Geographies | Year: 2015
Though the internet is relatively new, the methods used to study it do not necessarily need to be entirely new. Drawing from the author’s experiences of doing cybergeography research, documented through the use of excerpts from a research journal, this article describes how traditional methods are adapted to understand the relationships between online and offline worlds and how people seek to use the internet to change their everyday landscapes. Research strategies include treating the study of online places as if they were material landscapes, analyzing characteristics of websites, visiting associated places, and in-person interviews with producers. The amount of qualitative data collected from sites and the time it takes to analyze this data are challenges associated with qualitative analysis of websites. Field work is still necessary in internet research. Site visits and interviews reveal details about cases that may not be visible online including infrastructures and identities. Limitations of visits and interviews include the inability to study global scale phenomena as well as ethics of anonymity and confidentiality. Triangulation among virtual landscapes, material places, and interviews helps to reveal a nuanced view of the way that the internet transforms everyday life. © The Author(s) 2014