Combined mechanical loading of composite tubes

An analytical/experimental investigation was performed to study the effect of material nonlinearities on the response of composite tubes subjected to combined axial and torsional loading. The effect of residual stresses on subsequent mechanical response was included in the investigation. Experiments were performed on P75/934 graphite-epoxy tubes with a stacking sequence of (15/0/ + or - 10/0/ -15), using pure torsion and combined axial/torsional loading. In the presence of residual stresses, the analytical model predicted a reduction in the initial shear modulus. Experimentally, coupling between axial loading and shear strain was observed in laminated tubes under combined loading. The phenomenon was predicted by the nonlinear analytical model. The experimentally observed linear limit of the global shear response was found to correspond to the analytically predicted first ply failure. Further, the failure of the tubes was found to be path dependent above a critical load level

Using Deferred Income Taxes As A Link Between Intermediate Accounting And Corporate Income Tax Courses

The accounting curriculum (in fact business colleges in general) often is accused of operating in silos. As a result, it is claimed that students fail to see the connections among the assignments in their separate course work and the necessity to have an integrated understanding to function effectively in the real-world. As a response to the criticism, we use deferred income taxes as a means to help students bridge the gap between their Intermediate Accounting classes and their Corporate Income Tax course. As a bonus, students also: 1.) better understand the difficult topic of deferred income taxes, 2.) better understand Schedule M-1on the corporate tax return, and 3.) gain experience in documentation via the preparation of accounting work papers

Floral Ontogeny and Histogenesis in Leguminosae.

Inflorescence organogeny and floral initiation are investigated topographically (using scanning electron microscopy) and histogenetically in Acacia baileyana (Mimosoideae) and Lupinus havardii (Papilionoideae). Floral ontogeny is investigated topographically in Parkinsonia aculeata (Caesalpinioideae). The paniculate racemes of A. baileyana are constructed of first- and second-order inflorescence meristems. Each produces first-order and second-order bracts, respectively, in acropetal order. Each of the former bracts subtends one second-order inflorescence meristem while the latter bract type subtends a single flower. The radially symmetrical floral meristem of A. baileyana produces calyx members in helical order and corolla members simultaneously with a precocious terminal carpel. Common stamen primordia are initiated in antisepalous sites. Three to five individual stamen primordia form on each of the common stamen primordia after which additional stamen primordia appear laterally to fill in antipetalous areas between the common stamen primordia. Proliferation of the androecium is accomplished after radial expansion of the floral apex providing space upon which individual stamen primordia may encroach upon the expanded apex to the base of the carpel. Terminal racemes of L. havardii. pa produce bracts in acropetal order. Each bract subtends one flower. The bilaterally symmetrical floral meristem of L. havardii produces all floral organs in a unidirectional sequence within each whorl with some members of each whorl appearing precociously to the rest. Flowers of P. aculeata are initiated on racemes in acropetal order and each flower is subtended by a bract. The floral meristem of P. aculeata produces sepals in helical order and the other floral organs in unidirectional order. Precocious appearances of the carpel is consistent in all three species investigated. Its terminality is documented histologically only the papilionoid and the mimosoid taxa

Case-Based Approach to Teaching Intermediate Accounting: Addressing Faculty Concerns and Competency/Assurance of Learning Requirements

The authors propose the use of a fully integrated case approach to replace the traditional pedagogy of: read the chapter, listen to a lecture, do homework, then parrot back on an exam what was ‘remembered’. Students working in teams develop their ability to: analyze financial statement data, research new issues encountered, analyze their research results as it applies to client issues, and determine the impact on client financial statements including required disclosures. Administrators will be provided with a means to evaluate achievement of competencies and assurance of learning requirements including communication skills, critical thinking, decision analysis, and quantitative mastery of the subject matter. Faculty can assist students in developing both written and oral communication skills through playing role of: corporate controller, CPA firm partner, and corporate stockholder at company’s annual stockholders’ meeting. Concerns of free-riders among the student teams and academic integrity issues involving disclosure of case solutions are addressed

Aging in Place: Technology and Independence for Community-Dwelling Older Adults

Primary Focus: Productive Aging Learning Objectives: By the end of this presentation, participants will be able to: Explain the rationale for the use of technology-based interventions for community-dwelling older adults. Describe three current technologies that can be used to positively impact occupational performance for community-dwelling older adults. Describe the barriers to successful implementation of technology-based interventions for community-dwelling older adults. Abstract: The population of older adults in the U.S. continues to rise, as does the desire to remain in one’s own home, a concept known as “aging in place” (Piau, Campo, Rumeau, Vellas, & Nourhashémi, 2014; Centers for Disease Control and Prevention, 2013). Age-related changes and chronic disabilities contribute to decreased independence in daily life tasks. Decreased independence and safety can often lead to institutionalization of older adults, raising overall healthcare costs (Centers for Disease Control and Prevention, 2013). Current research acknowledges technology as a feasible means of improving independence in everyday activities for community-dwelling older adults. The authors completed a replicable journal search to identify evidence for use of technology and the impact on occupational performance in community-dwelling older adults. A search using PubMed, CINAHL, and Ovid, with MeSH terms and keywords related to community-dwelling older adults, assistive technologies, and outcomes related to occupational performance in a variety of daily tasks yielded eleven articles. Articles were critically appraised using critical review forms developed by Law et al. (1998) and Letts et al. (2007) for quantitative and qualitative studies, respectively. This session will present the evidence, including increased task performance and reduced caregiver burden for older adults who utilized technology-based interventions. The studies were limited by poor research design, underdeveloped technology, and mixed acceptance of interventions. Despite the limitations, the findings provide pertinent and actionable research to occupational therapists, a group uniquely suited to implement these technologies to support independence amongst the aging population residing in the community. Level of Material Being Presented: Introductory Target Audience: Mixed References Centers for Disease Control and Prevention. (2013). The state of aging health in America 2013. Retrieved fromhttp://www.cdc.gov/aging/data/index.htm Law, M., Stewart, D., Pollock, N., Letts, L., Bosch, J., & Westmorland, M. (1998). Critical review form - quantitative studies. Retrieved from www.jefferson.blackboard.com Letts, L., Wilkins, S., Law, M., Stewart, D., Bosch, J., & Westmorland, M. (2007). Critical review form - qualitative studies (Version 2.0). Retrieved from www.jefferson.blackboard.com Piau, A., Campo, E., Rumeau, P., Vellas, B., & Nourhashémi F. (2014). Aging society and gerontechnology: A solution for an independent living? The Journal of Nutrition, Health, and Aging, 18(1), 97-112. Presentation: 37:5

Designing a Locally Manufacturable Wheelchair for Nepal

Persons with disabilities in developing countries often lack the basic equipment needed to assist them in their daily lives. International Nepal Fellowship (INF) is a Christian medical organization located in Nepal that provides medical care and assistance to people with disabilities and other conditions. Currently, INF imports expensive wheelchairs that undergo a prolonged border process before being received by INF. INF has reached out to the Collaboratory to design a wheelchair that can withstand the challenges of Nepal’s terrain and can be manufactured from local materials. The Nepal Wheelchair team accepted this challenge and set out to design a wheelchair that can fulfill the needs of INF. The team began by researching wheelchair models for inspiration and eventually settled on two preliminary designs. In January 2020, the team traveled to Pokhara, Nepal to gain feedback from the staff at INF and select a final design based on their comments. During this trip, the team acquired and brought back locally available materials and parts in order to be able to construct a prototype using materials which are actually available in Nepal. After returning, the team began performing Finite Element Analysis on the frame design and tested the steel from the trip to determine its physical properties. With prototyping progress stalled by recent events, the team is focusing on perfecting the design and preparing an instruction manual for INF.https://mosaic.messiah.edu/engr2020/1005/thumbnail.jp

The Ursinus Weekly, October 3, 1949

First epistle to the freshmen • Fords to be rivals in home grid clash • Hockey drills start; Frick leads squad • Harriers condition for championships • Bruin eleven yields 21-0 as Drexel breaks streak • Greek prof begins seventeenth season as soccer mentor • Interdorm program set; includes tennis, football • Bears elect leader for grid campaign • Bakermen prepare for season opener • From the sidelines • Kunz, Nicholls go continental • Ursinus star shines in summer theater • Editorial: Senior to frosh • Six assume posts on Ursinus faculty • Forums to include verse and opinions on Arctic, Far East • Teachers j.g. begin trial flights soon • Y to present plans at rally Wednesday • Greenies view Ursinus under bands and bangs • School registers 974 as enrollment drops • WSGA begins duties as committees plan future coed events • Bruin brainmen hit dean\u27s squad 79-29 after 16-week fray • New prexy outlines semester schedule for musical groups • Campus store introduces new hours, coffee machine • President entertains at banquet • Juniors set freshman breakfasthttps://digitalcommons.ursinus.edu/weekly/1572/thumbnail.jp

Hopf bifurcations in time-delay systems with band-limited feedback

We investigate the steady-state solution and its bifurcations in time-delay systems with band-limited feedback. This is a first step in a rigorous study concerning the effects of AC-coupled components in nonlinear devices with time-delayed feedback. We show that the steady state is globally stable for small feedback gain and that local stability is lost, generically, through a Hopf bifurcation for larger feedback gain. We provide simple criteria that determine whether the Hopf bifurcation is supercritical or subcritical based on the knowledge of the first three terms in the Taylor-expansion of the nonlinearity. Furthermore, the presence of double-Hopf bifurcations of the steady state is shown, which indicates possible quasiperiodic and chaotic dynamics in these systems. As a result of this investigation, we find that AC-coupling introduces fundamental differences to systems of Ikeda-type [Ikeda et al., Physica D 29 (1987) 223-235] already at the level of steady-state bifurcations, e.g. bifurcations exist in which limit cycles are created with periods other than the fundamental ``period-2'' mode found in Ikeda-type systems.Comment: 32 pages, 5 figures, accepted for publication in Physica D: Nonlinear Phenomen

Argonne National Laboratory Reports

A method is described how a quantitative measure for the robustness of a given transport theory code for coarse network calculations can be obtained. A code, that performs this task automatically and at only nominal cost, is described and has been implemented for slab geometry. This code generates also user oriented benchmark problems which exhibit the analytic behavior at interfaces