758 research outputs found
Review of the book Unbegrenzte moglichkeiten: Amerikanisierung in Deutschland und Frankreich (1900-1933) by Egbert Klautke
No full textDr. Jeff R. Schutts (Douglas College) reviews the book Unbegrenzte Moglichkeiten: Amerikanisierung in Deutschland und Frankreich (1900-1933) by Egbert Klautke (2005).Final article published
Review of the book Hitlers Volksstaat: Raub, Rassenkrieg und nationaler Sozialismus by Götz Aly
No full textDr. Jeff R. Schutts (Douglas College) reviews the book Hitlers Volksstaat: Raub, Rassenkrieg und nationaler Sozialismus by Götz Aly (2008).Final article published
Correspondence from Jeff D. Stone to William R. Beardslee, July 9, 1966
No full textCorrespondence from Jeff D. Stone to William R. Beardslee discussing a Voter Education Project student worker voter registration initiatives in Muscogee county
Jeff Richards: Open Country
No full textLoganberry Books presents author Jeff Richards and his book Open Country, a tightly woven novel in 18 short stories that starts and ends at the Ohio River, the division between two families who fight on opposite sides during the Civil War and figure prominently in the piece. It is written in the vernacular of the time with a tone of gallows humor
Nonlinear Viscoelastic Wave Propagation in Brain Tissue
No full textA combination of theoretical, numerical, and experimental methods were utilized to determine that shock waves can form in brain tissue from smooth boundary conditions. The conditions that lead to the formation of shock waves were determined. The implication of this finding was that the high gradients of stress and strain that could occur at the shock wave front could contribute to mechanism of brain injury in blast loading conditions. The approach consisted of three major steps. In the first step, a viscoelastic constitutive model of bovine brain tissue under finite step-and-hold uniaxial compression with 10 1/s ramp rate and 20 s hold time has been developed. The assumption of quasi-linear viscoelasticity (QLV) was validated for strain levels of up to 35%. A generalized Rivlin model was used for the isochoric part of the deformation and it was shown that at least three terms (C_10, C_01 and C_11) are needed to accurately capture the material behavior. Furthermore, for the volumetric deformation, a linear bulk modulus model was used and the extent of material incompressibility was studied. The hyperelastic material parameters were determined through extracting and fitting to two isochronous curves (0.06 s and 14 s) approximating the instantaneous and steady-state elastic responses. Viscoelastic relaxation was characterized at five decay rates (100, 10, 1, 0.1, 0 1/s) and the results in compression and their extrapolation to tension were compared against previous models. In the next step, a framework for understanding the propagation of stress waves in brain tissue under blast loading was developed. It was shown that tissue nonlinearity and rate dependence are key parameters in predicting the mechanical behavior under such loadings, as they determine whether traveling waves could become steeper and eventually evolve into shock discontinuities. To investigate this phenomenon, the QLV material model developed based on finite compression results mentioned above was extended to blast loading rates, by utilizing the stress data published on finite torsion of brain tissue at high rates (up to 700 1/s). It was shown that development of shock waves is possible inside the head in response to compressive pressure waves from blast explosions. Furthermore, it was argued that injury to the nervous tissue at the microstructural level could be attributed to the high stress and strain gradients with high temporal rates generated at the shock front and this was proposed as a mechanism of injury in brain tissue. In the final step, the phenomenon of shock wave formation and propagation in brain tissue was further studied by developing a one-dimensional model of brain tissue using the Discontinuous Galerkin finite element method. This model is capable of capturing high-gradient waves with higher accuracy than commercial finite element software. The deformation of brain tissue was investigated under displacement input and pressure input boundary conditions relevant to blast over-pressure reported in the literature. It was shown that a continuous wave can become a shock wave as it propagates in the tissue when the initial changes in acceleration are beyond a certain limit. The high spatial gradients of stress and strain at the shock front cause large relative motions at the cellular scale at high temporal rates even when the maximum strains and stresses are relatively low. This gradient-induced local deformation occurs away from the boundary and can therefore contribute to the diffuse nature of blast-induced injuries.  Mechanical Engineerin
Toward a Universal Constitutive Model for Brain Tissue
No full textSeveral efforts have been made in the past half century to characterize the behavior of brain tissue under different modes of loading and deformation rates; however each developed model has been associated with limitations. This dissertation aims at addressing the non-linear and rate dependent behavior of brain tissue specially in high strain rates (above 100 s-1) that represents the loading conditions occurring in blast induced neurotrauma (BINT) and development of a universal constitutive model for brain tissue that describes the tissue mechanical behavior from medium to high loading rates.. In order to evaluate the nature of nonlinearity of brain tissue, bovine brain samples (n=30) were tested under shear stress-relaxation loading with medium strain rate of 10 s-1 at strain levels ranging from 2% to 40% and the isochronous stress strain curves at 0,1 s and 10 s after the peak force formed. This approach enabled verification of the applicability of the quasilinear viscoelastic (QLV) theory to brain tissue and derivation of its elastic function based on the physics of the material rather than relying solely on curve fitting. The results confirmed that the QLV theory is an acceptable approximation for engineering shear strain levels below 40% that is beyond the level of axonal injury and the shape of the instantaneous elastic response was determined to be a 5th order odd polynomial with instantaneous linear shear modulus of 3.48±0.18 kPa. To investigate the rate dependent behavior of brain tissue at high strain rates, a novel experimental setup was developed and bovine brain samples (n=25) were tested at strain rates of 90, 120, 500, 600 and 800 s-1 and the resulting deformation and shear force were recorded. The stress-strain relationships showed significant rate dependency at high rates and was characterized using a QLV model with a 739 s-1 decay rate and validated with finite element analysis. The results showed the brain instantaneous elastic response can be modeled with a 3rd order odd polynomial and the instantaneous linear shear modulus was 19.2±1.1 kPa. A universal constitutive model was developed by combining the models developed for medium and high rate deformations and based on the QLV theory, in which the relaxation function has 5 time constants for 5 orders of magnitude in time (from 1 ms to 10 s) and therefore, is capable of predicting the brain tissue behavior in a wide range of deformation rates. Although the universal model presented in this study was developed based on only shear tests and the material parameters could not be found uniquely, by comparing the results of this study with previously available data in the literature under tension unique material parameters were determined for a 5 parameter generalized Rivlin elastic function (C10=3.208±0.602 kPa, C01=4.191±1.074 kPa, C11=79.898±18.974 kPa, C20=-37.093±7.273 kPa, C02=-37.712±5.678 kPa). The universal constitutive model for brain tissue presented in this dissertation is capable of characterizing the brain tissue behavior under large deformation in a wide range of strain rates and can be used in computational modeling of Traumatic Brain Injury (TBI) to predict injuries that result from falls and sports to automotive accidents and BINT.Mechanical Engineerin
2022 - Jeff Stowell
No full textDr. Jeff Stowell (Psychology) Dr. Jeff Stowell’s service to EIU is at such an incomparable level that it would be difficult to imagine what EIU would look like without his extraordinary commitment to this institution.
He is our accreditation liaison. He is on the textbook advisory committee (in the past chair), the academic program elimination committee, and the institutional animal care and use committee. He has served on the online learning board (co-chaired), HLC assurance review committee (also co-chaired), learning goal subcommittee (chair, of course), and dozens of other committees (university, college, and department) representing many, many years of collective service to our institution. Beyond the gates of EIU, Jeff serves our state and his discipline on the Illinois College Course Materials Affordability and Equitable Access Task Force, IAI Transfer Psychology Panel, and as a reviewer for various journals and presses, among other things. He is currently the executive director of the Mid-America Undergraduate Psychology Research Conference. Last, but certainly not least, Jeff has served continuously on Faculty Senate since 2010, and for the last seven years as Vice-Chair (for which he gets no CUs). Jeff is an innovator and early adopter of classroom technology. He is also conscientious in how he uses these new tools, ever careful to assure that they are actually improving the educational experience for students, as well as their retention and understanding. Jeff has been named the Psi Chi (Psychology Honor’s Society) chapter’s faculty member of the year, four times, and he has been nominated for U.S Professor of the year three times. In addition, he has received a TurningPoint teaching award, the Michael R. Hoadley Instructional Technology Award, an award for a textbook he contributed to (the McGuffey Award), along with teaching awards from our Honors College, the College of Sciences, the School of Continuing Education, and the Department of Psychology, among many other accolades. In 2012 he was named Faculty Laureate, arguably the highest teaching award at our University. Jeff’s record of outstanding research is another feather in our collective hats. Much of his most recent research focuses on the application of various teaching technologies and strategies, and their assessment. This is the kind of work that doesn’t just benefit our students and faculty, but faculty and students everywhere. It is also particularly relevant and timely, given the global pivot to online instruction in the wake of the Covid epidemic, and the changing demographics of our nation that will compel universities to reach out and cater to the unique needs of non-traditional students. Jeff is the author of more than three dozen journal articles and book chapters on these subjects. Many of these are co-written with students. He has also co-authored or edited another dozen works on line and in print, including the books Activities for Teaching Statistics and Research Methods (APA, 2017), and Getting Connected: Best Practices for Technology-Enhanced Teaching and Learning in Psychology (Oxford, 2011). True to the criteria for the award, Jeff exemplifies achievement in every area – service, teaching, and research – for which a professor’s work is traditionally measured.https://thekeep.eiu.edu/distinguished_faculty_award/1008/thumbnail.jp
Born again in the gospel of refreshment?: Coca-colonization and the re-making of postwar German identity
No full textThe chapter, "Born again in the gospel of refreshment?: Coca-colonization and the re-making of postwar German identity" was written by Jeff R. Schutts (Douglas College Faculty). Sitting in the ruins of the Third Reich, most Germans wanted to know which of the two post-war German states would erase the material traces of their wartime suffering most quickly and most thoroughly. Consumption and the quality of everyday life quickly became important battlefields upon which the East-West conflict would be fought. This book focuses on the competing types of consumer societies that developed over time in the two Germanies and the legacy each left. Consuming Germany in the Cold War assesses why East Germany increasingly fell behind in this competition and how the failure to create a viable socialist "consumer society" in the East helped lead to the fall of the Berlin Wall in 1989. By the 1970s, East Germans were well aware that the regime's bombastic promises that the GDR would soon overtake the West had become increasingly hollow. For most East German citizens, West German consumer society set the standards that East Germany repeatedly failed to meet.By exploring the ways in which East and West Germany have functioned as each other's "other" since 1949, this book suggests some of the possibilities for a new narrative of post-war German history. While taking into account the very different paths pursued by East and West Germany since 1949, the contributors demonstrate the importance of competition and highlight the connections between the two German successor states, as well as the ways in which these relationships changed throughout the period. By understanding the legacy that forty-plus years of rivalry established, we can gain a better understanding of the current tensions between the eastern and western regions of a united Germany.book chapterPublished
The Effect of Coping on the Physical and Mental Health of Abused Women
No full textPaper describes the results of a study examining the effects of coping mechanisms on the mental health symptoms of women in abusive relationships
THE RELATION BETWEEN BORDERLINE PERSONALITY DISORDER FEATURES AND TEEN DATING VIOLENCE IN ADOLESCENCE: A LONGITUDINAL STUDY
No full textTeen dating violence (TDV) is a serious social problem with significant physical and emotional consequences. A number of theoretical models have identified several factors associated with intimate partner violence (IPV) amongst adults, including the role of personality disorder features such as Borderline Personality Disorder (BPD). However, little is known about borderline features and intimate partner violence amongst adolescents (i.e. TDV). The present study is the first to investigate the relation between TDV and borderline features in adolescents, taking into account important additional correlates of TDV at both the cross-sectional and longitudinal level. An ethnically diverse sample of N = 1,042 adolescents completed self-report measures of dating violence and borderline features, in addition to measures of substance use, hostility, and exposure to parental violence. Results showed that borderline features made independent contributions to TDV victimization, but not perpetration, at the cross-sectional level for females. At the longitudinal level, baseline and follow up TDV victimization and TDV perpetration were significantly higher for adolescents with borderline features compared to adolescents without borderline features. Borderline features should be considered in the assessment of TDV in order to aid with identification and treatment. Implications of the role of gender on TDV and future directions are discussed.Psychology, Department o
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