Cumulative Shear In Vitro Model

The purpose of our project is to find a reliable method of Subclinical Atherosclerosis detection by measuring the pressure drop across an artery. This model is intended to display how a pressure change correlates with arterial shear rate, and how a decrease in shear rate is ultimately related to atherosclerosis wherein early detection could prove life saving for millions of patients worldwide

Virtually passing monitor detection pulse over software due to hardware constraints

During normal DisplayPortTM operation, a cable connects from the Sink (monitor) to the Source directly via physical DisplayPort pins. But, what happens when Sink is connected to an Intermediary Device (ID) that connects to the Source? The straightforward approach is to transfer DisplayPort signals from Intermediary Device (ID) to the Source by hard-wiring all DisplayPort signals between them. This approach could be challenging if enough hardware pins are not available to send all the DisplayPort signals across from Intermediary Device to Source. Thus, the idea disclosed in this disclosure demonstrates a way to successfully transfer all DisplayPort signals using the Controller Area Network (CAN) bus across from the Intermediary Device to the Midplane connector and then to the Source. This approach eliminates the need for expensive hardware pins on the connectors and extends the DisplayPort functionality from back of the Chassis to the front of the Chassis. M4 microcontroller on the ID is utilized to calculate pulse duration. This Pulse Duration generates unique high priority CAN packets and these packets are delivered to the Source device over the CAN bus. This approach provides better user experience without spending extra money on bigger expensive hardware connectors. Also, it utilizes one Source in the back of the enclosure thus removing the need of a more expensive processor on the front of the enclosure that could run Graphical User Interface. Additionally, ordinary DisplayPort use cases have all pins hard-wired between the Sink and the Source thus they don’t have this problem. But, if there is a need to carry DisplayPort signals over multiple layers of hardware/software then this is one of the solution to be used. Thus, carrying relevant Hot Plug Detect (HPD) signal via high priority CAN messages instead of an actual pin is very useful. This is a more complex problem due to the time sensitivity of pulses generated by HPD signal. This solution utilizes the processing power of another microcontroller to calculate the Pulse Duration and based on the length of the duration sends a unique message to DisplayPort Source to act on

Meeting their match

It’s Wednesday night, and under the flourescent lights of Lied recreation center, rugby teammates line up parallel to each other. On the coach’s call, one charges toward the other and hooks an arm under a leg while thrusting a shoulder into the torso — the teammate is pinned to the ground. They get up from the turf laughing, the charger helping her teammate up. Then they switch positions, the charger preparing for a turn as the tackling dummy

Innovating to Help the Students of FMHC Transition Into the Real World

We appreciate your interest in our team, and all of the work we put into creating a solution for the future leaders of the Frederik Meijer Honors College. Over the span of four months, we conducted hours of research, interviews, team collaboration, thinking critically, prototyping, and designing. Through this portfolio, an overview will be provided of how we developed our final innovation to assist students of the Frederik Meijer Honors College to comfortably transition to life after Grand Valley

Children Develop a Veil of Fairness

Previous research suggests that children develop an increasing concern with fairness over the course of development. Research with adults suggests that the concern with fairness has at least two distinct components: a desire to be fair but also a desire to signal to others that they are fair. We explore whether children’s developing concern with behaving fairly towards others may in part reflect a developing concern with appearing fair to others. In Experiments 1-2, most 6- to 8-year-old children behaved fairly towards others when an experimenter was aware of their choices; fewer children opted to behave fairly, however, when they could be unfair to others yet appear fair to the experimenter. In Experiment 3, we explored the development of this concern with appearing fair by using a wider age range (6- to 11-year-olds) and a different method. In this experiment, children chose how to assign a good or bad prize to themselves and another participant by either unilaterally deciding who would get each prize or by using a fair procedure – flipping a coin in private. Older children were much more likely to flip the coin than younger children, yet were just as likely as younger children to assign themselves the good prize by reporting winning the coin flip more than chance would dictate. Overall, the results of these experiments suggest that as children grow older they become increasingly concerned with appearing fair to others, which may explain some of their increased tendency to behave fairly

Children develop a veil of fairness.

Previous research suggests that children develop an increasing concern with fairness over the course of development. Research with adults suggests that the concern with fairness has at least 2 distinct components: a desire to be fair and a desire to signal to others that they are fair. We explore whether children's developing concern with behaving fairly toward others may in part reflect a developing concern with appearing fair to others. In Experiments 1 and 2, most 6- to 8-year-old children behaved fairly toward others when an experimenter was aware of their choices; fewer children opted to behave fairly, however, when they could be unfair to others yet appear fair to the experimenter. In Experiment 3, we explored the development of this concern with appearing fair by using a wider age range (6- to 11-year-olds) and a different method. In this experiment, children chose how to assign a good or bad prize to themselves and another participant by either unilaterally deciding who would get each prize or using a fair procedure-flipping a coin in private. Older children were much more likely to flip the coin than younger children, yet were just as likely as younger children to assign themselves the good prize by reporting winning the coin flip more than chance would dictate. Overall, the results of these experiments suggest that as children grow older they become increasingly concerned with appearing fair to others, which may explain some of their increased tendency to behave fairly.© 2013 American Psychological Association

The Forum: Spring 2011

Spring 2011 journal of the Honors Program at the University of North Dakota. The issue includes stories, poems, essays and art by undergraduate students.https://commons.und.edu/und-books/1064/thumbnail.jp

Stability of Monomer-Dimer Piles

We measure how strong, localized contact adhesion between grains affects the maximum static critical angle, theta_c, of a dry sand pile. By mixing dimer grains, each consisting of two spheres that have been rigidly bonded together, with simple spherical monomer grains, we create sandpiles that contain strong localized adhesion between a given particle and at most one of its neighbors. We find that tan(theta_c) increases from 0.45 to 1.1 and the grain packing fraction, Phi, decreases from 0.58 to 0.52 as we increase the relative number fraction of dimer particles in the pile, nu_d, from 0 to 1. We attribute the increase in tan(theta_c(nu_d)) to the enhanced stability of dimers on the surface, which reduces the density of monomers that need to be accomodated in the most stable surface traps. A full characterization and geometrical stability analysis of surface traps provides a good quantitative agreement between experiment and theory over a wide range of nu_d, without any fitting parameters.Comment: 11 pages, 12 figures consisting of 21 eps files, submitted to PR

Anesthesia and Sedation Practices Among Neurointerventionalists during Acute Ischemic Stroke Endovascular Therapy

Background and Purpose: Intra-arterial reperfusion therapies are expanding frontiers in acute ischemic stroke (AIS) management but there is considerable variability in clinical practice. The use of general anesthesia (GA) is one example. We aimed to better understand sedation practices in AIS. Methods: An online survey was distributed to the 68 active members of the Society of Vascular and Interventional Neurology (SVIN). Survey development was based on discussions at the SVIN Endovascular Stroke Round Table Meeting (Chicago, IL, 2008). The final survey contained 12 questions. Questions were developed as single and multiple-item responses; with an option for a free-text response. Results: There was a 72% survey response rate (N = 49/68). Respondents were interventional neurologists in practice 1–5 years (71.4%, N = 35). The mean (±SD) AIS interventions performed per year at the respondents’ institutions was 42.5 ± 25, median 35.0 (IQR 20, 60). The most frequent anesthesia type used was GA (anesthesia team), then conscious sedation (nurse administered), monitored anesthesia care (anesthesia team), and finally local analgesia alone. There was a preference for GA because of eliminating movement (65.3% of respondents; N = 32/49), perceived procedural safety (59.2%, N = 29/49), and improved procedural efficacy (42.9%, N = 21/49). However, cited limitations to GA included risk of time delay (69.4%, N = 34), of propagating cerebral ischemia due to hypoperfusion or other complications (28.6%, N = 14), and lack of adequate anesthesia workforce (20.4%, N = 7). Conclusions: The most frequent type of anesthesia used by Neurointerventionalists for AIS interventions is GA. Prior to making GA standard of care during AIS intervention, more data are needed about effects on clinical outcomes

Total- and Monomethyl-Mercury and Major Ions in Coastal California Fog Water: Results from Two Years of Sampling on Land and at Sea

Marine fog water samples were collected over two summers (2014–2015) with active strand collectors (CASCC) at eight coastal sites from Humboldt to Monterey counties in California, USA, and on four ocean cruises along the California coastline in order to investigate mercury (Hg) cycling at the ocean-atmosphere-land interface. The mean concentration of monomethylmercury (MMHg) in fog water across terrestrial sites for both years was 1.6 ± 1.9 ng L-1 (\u3c0.01–10.4 ng L-1, N = 149), which corresponds to 5.7% (2.0–10.8%) of total Hg (HgT) in fog. Rain water samples from three sites had mean MMHg concentrations of 0.20 ± 0.12 ng L-1 (N = 5) corresponding to 1.4% of HgT. Fog water samples collected at sea had MMHg concentrations of 0.08 ± 0.15 ng L-1 (N = 14) corresponding to 0.4% of HgT. Significantly higher MMHg concentrations in fog were observed at terrestrial sites next to the ocean relative to a site 40 kilometers inland, and the mean difference was 1.6 ng L-1. Using a rate constant for photo-demethylation of MMHg of -0.022 h-1 based on previous demethylation experiments and a coastal-inland fog transport time of 12 hours, a mean difference of only 0.5 ng L-1 of MMHg was predicted between coastal and inland sites, indicating other unknown source and/or sink pathways are important for MMHg in fog. Fog water deposition to a standard passive 1.00 m2 fog collector at six terrestrial sites averaged 0.10 ± 0.07 L m-2 d-1, which was ∼2% of typical rainwater deposition in this area. Mean air-surface fog water fluxes of MMHg and HgT were then calculated to be 34 ± 40 ng m-2 y-1 and 546 ± 581 ng m-2 y-1, respectively. These correspond to 33% and 13% of the rain fluxes, respectively