An interactive graphics system to facilitate finite element structural analysis

The characteristics of an interactive graphics systems to facilitate the finite element method of structural analysis are described. The finite element model analysis consists of three phases: (1) preprocessing (model generation), (2) problem solution, and (3) postprocessing (interpretation of results). The advantages of interactive graphics to finite element structural analysis are defined

A Centennial History of the Ohio Journal of Science

Author Institution: John N. Couch Biology Library, CB#3280-Coker Hall, University of North CarolinaOn the occasion of the centennial ofThe Ohio Journal of Science, this paper provides a short history of its development. From an inaugural issue of 16 pages in November 1900, The Journal has matured into an important serial featuring peer-reviewed articles in science, engineering, technology, and education, or their applications; book reviews; four special issues devoted to a theme; Academy presidential addresses; and obituaries of deceased members. Guided over the years by a sequence of 18 editors, The Journal has undergone title changes as its disciplinary scope broadened: The O.S.U. Naturalist (Nov-Dec 1900), The Ohio Naturalist (Jan 1901-Jun 1914), The Ohio Naturalist and Journal of Science (Nov 1914-Jun 1915), and The Ohio Journal of Science (Nov 1915-present). In the past century The Journal has developed from an Ohio natural history serial to an interdisciplinary science journal of international use and respect. Copies are sent to 1900 individuals and organizations, including 37 foreign countries

Virginia\u27s Response to Computer Abuses: An Act in Five Crimes

The threat depicted in War Games has been both rebuked as impossible and highlighted as much closer to the realm of possibility than even the creators of the movie may have surmised. Regardless of the actual possibility of a creative mind breaking through the security of the North America Air Defense Command computer with an auto-dialing modem and the simple password JOSHUA the adventures of the curious hackers and the singularly-directed criminal have been widely publicized and have captured both the fear and respect of computer owners throughout the country

Junior nursing students\u27 experiences of vertical violence during clinical rotations

Horizontal violence is a form of workplace violence, a phenomenon that is prevalent in the nursing profession. Research has revealed a variety of negative peer-to-peer behaviors that lower morale and lead to turnover. However, little research has been conducted on “eating our young” (violence occurring between individuals with unequal power, such as staff nurse and student). We propose “vertical violence” as the appropriate term when abusive registered nurse (RN) behavior is directed towards students. We report a content analysis of stories written by junior nursing students about incidents of injustice perpetrated by staff RNs during their clinical experiences. Four levels of injustice were described. Nursing leadership, both in hospitals and educational institutions, must become engaged in efforts to eradicate vertical violence towards students

Encouraging Student Sense of Belonging Through Instructor Face Support

Research has established important links between student sense of belonging in the classroom and levels of academic engagement, motivation, and persistence (e.g., Jang et al., 2016; Reeve, 2012) yet more work is needed to identify specific teacher communication tactics and strategies that can foster sense of belonging and increased engagement. Using a conceptual framework centered on organizational identification, we surveyed 172 undergraduates and found that instructor interpersonal skills—specifically face support during student feedback—significantly correlated with increased class identification and sense of belonging. These results hold important implications for promoting student engagement, motivation, and persistence, particularly for underrepresented students

Orexin A-induced enhancement of attentional processing in rats: role of basal forebrain neurons

Orexins are neuropeptides released in multiple brain regions from neurons that originate within the lateral hypothalamus and contiguous perfornical area. The basal forebrain, a structure implicated in attentional processing, receives orexinergic inputs. Our previous work demonstrated that administration of an orexin-1 receptor antagonist, SB-334867, systemically or via infusion directly into the basal forebrain, can disrupt performance in a task that places explicit demands on attentional processing. Given that the orexin-1 receptor binds orexin A with high affinity, we tested whether orexin A could enhance attention in rats. Attentional performance was assessed using a task that required discrimination of variable duration visual signals from trials when no signal was presented. We also tested whether infusions of orexin A into the lateral ventricle could attenuate deficits following lesions of medial prefrontal cortical cholinergic projections that arise from the basal forebrain. Infusions of orexin A into the basal forebrain attenuated distracter-induced decreases in attentional performance. Orexin A attenuated deficits in lesioned animals when a visual distracter was presented. The present results support the view that orexin A can enhance attentional performance via actions in the basal forebrain and may be beneficial for some conditions characterized by attentional dysfunction due to disruption of cortical cholinergic inputs

The Communicative Accomplishment of Knowledge in Collaborative Work: Texts, Conversations, and Social Material Practices

Over the past thirty years, science research in the U.S. has faced increasing demand for collaboration across disciplinary and organizational divides, with varying success. This dissertation study traces a federal research laboratory facility through organizational changes implemented toward achieving greater cross-disciplinary collaborative capacity. The particular interest driving this study is to discern and trace the role of disciplinary expert knowledge as a potential resource and/or obstacle for situated, collaborative problem-solving. To examine the mitigating role of expert knowledge toward the achievement of problem-centered collaborative knowing, I study laboratory and building management meetings involving a committee of scientists and building workers representing a number of research units and building systems workers. Through participant-observation during these collaborative management meetings, and by asking follow-up questions during interviews with those involved, I document the collaborative communication and resulting texts produced by the committee as they raise, discuss and resolve the building and laboratory issues experienced during these organizational changes. Key findings center on the way that collaborative talk became encoded into organizing texts that provided a common vision of the organization and collaborative work, by linking together and configuring organized meanings, narratives, practices, material (spatial and object) understandings and, in the process, specifying worker relationships. Together, these configurations resulted in a new type of expert knowledge: a textual compilation of building knowledge that replaced prior &ldquo;silo-ed&rdquo; laboratory-specific expert knowledge/practice combinations.</p

Oxidation chemistry of d^0 organometallic complexes

Electron-transfer processes can play an important role in organometallic chemistry. Herein, we demonstrate that even d^0 organometallic complexes exhibit a rich redox chemistry and present electrochemical, kinetics, and stereochemical studies that establish a general outer-sphere oxidation process for d^0 group 4 metallocene complexes. This oxidation chemistry closely parallels the reported LMCT photochemistry of these complexes