1,381 research outputs found
MIS 370 Business Microcomputer Applications
Course syllabus for MIS 370 Business Microcomputer Applications
Course description: Provides an overview of business data processing and management information systems. Covers introductory concepts of systems analysis techniques, nature of computer applications in business, problem solving, and discusses the future of computer technology. Includes an introduction to and use of database software in business related problems, and the integration of applications software
MIS 370 Business Microcomputer Applications
Course syllabus for MIS 370 Business Microcomputer Applications
Course description: Provides an overview of business data processing and management information systems. Covers introductory concepts of systems analysis techniques, nature of computer applications in business, problem solving, and discusses the future of computer technology. Includes an introduction to and use of database software in business related problems, and the integration of applications software
Public Acceptance of INDOT’s Traffic Engineering Treatments and Services
As a public agency, interacting with and understanding the public’s perspective regarding agency activities is an important endeavor for the Indiana Department of Transportation (INDOT). Although INDOT conducts a biennial customer satisfaction survey, it is occasionally necessary to capture public perception regarding more specific aspects of INDOT’s activities. In particular, INDOT needs an effective way to measure and track public opinions and awareness or understanding of a select set of its traffic engineering practices. To evaluate public acceptance of specific INDOT traffic engineering activities, a survey consisting of 1,000 adults residing within the State of Indiana was conducted. The survey population was representative in terms of age and gender of the state as of the 2010 U.S. Census. The survey was administered during the months of July and August 2020. Public awareness regarding emerging treatments not currently implemented in Indiana is low and opposition to the same new technologies is prominent. Older or female drivers are less likely to be aware of emerging treatments, and older drivers are more likely to oppose potential implementation of these treatments. Although roundabouts are commonplace in Indiana, multi-lane roundabouts remain controversial among the public. Regarding maintenance and protection of traffic during work zones and considering full or partial roadway closure, public preference is for partial closure; this preference is stronger in rural areas. The public equally agrees and disagrees that INDOT minimizes construction related traffic delays. Approximately 76% of Indiana drivers believe themselves to above average drivers, while an additional 23% believe themselves to be average. Driver perceptions of average highway speeds speed are not aligned with posted speed limit as the perceived average speed on Indiana’s urban freeways and rural and urban state highways is considerably higher than the actual speed limit
Advection, diffusion and delivery over a network
Many biological, geophysical and technological systems involve the transport
of resource over a network. In this paper we present an algorithm for
calculating the exact concentration of resource at any point in space or time,
given that the resource in the network is lost or delivered out of the network
at a given rate, while being subject to advection and diffusion. We consider
the implications of advection, diffusion and delivery for simple models of
glucose delivery through a vascular network, and conclude that in certain
circumstances, increasing the volume of blood and the number of glucose
transporters can actually decrease the total rate of glucose delivery. We also
consider the case of empirically determined fungal networks, and analyze the
distribution of resource that emerges as such networks grow over time. Fungal
growth involves the expansion of fluid filled vessels, which necessarily
involves the movement of fluid. In three empirically determined fungal networks
we found that the minimum currents consistent with the observed growth would
effectively transport resource throughout the network over the time-scale of
growth. This suggests that in foraging fungi, the active transport mechanisms
observed in the growing tips may not be required for long range transport.Comment: 54 pages including appendix, 10 figure
Large closed queueing networks in semi-Markov environment and its application
The paper studies closed queueing networks containing a server station and
client stations. The server station is an infinite server queueing system,
and client stations are single-server queueing systems with autonomous service,
i.e. every client station serves customers (units) only at random instants
generated by a strictly stationary and ergodic sequence of random variables.
The total number of units in the network is . The expected times between
departures in client stations are . After a service completion
in the server station, a unit is transmitted to the th client station with
probability , and being processed in the th client
station, the unit returns to the server station. The network is assumed to be
in a semi-Markov environment. A semi-Markov environment is defined by a finite
or countable infinite Markov chain and by sequences of independent and
identically distributed random variables. Then the routing probabilities
and transmission rates (which are expressed via
parameters of the network) depend on a Markov state of the environment. The
paper studies the queue-length processes in client stations of this network and
is aimed to the analysis of performance measures associated with this network.
The questions risen in this paper have immediate relation to quality control of
complex telecommunication networks, and the obtained results are expected to
lead to the solutions to many practical problems of this area of research.Comment: 35 pages, 1 figure, 12pt, accepted: Acta Appl. Mat
Synthesis, Structure of Nitrogen-Containing Phosphinogold(I) Ferrocenes. In vitro Activity against Bladder and Colon Carcinoma Cell Lines
The gold salt [(tht)AuCl] was reacted with [1-N,N-dimethylaminométhyl-2-diphenylphosphino]ferrocene (1) forming the bimetallic derivative 4. The reaction of methyl iodide
and tetramethylammonium bromide on the chloride 4 produced the ammonium salt 5 and the
bromide 6 respectively. New aminophosphines 2 and 3, which represent two of the rare
phosphorylated metallocenes containing P(III)-N bond have also been coordinated to gold(I) to
form 7 and 8. The presence of the ethoxy group in 7 provides evidence for the lability of one
nitrogen-phosphorus bond. The X-ray structure of compounds 4 and 7 have been established.
Both crystallize in space group P21/c, monoclinic, with a = 11.095(2) Ã…, b = 12.030(3) Ã…, c =
17.763(4) Å, β= 94.02(2)∘, Z = 4 for 4 and a = 14.863(3) Å, b = 8.036(5)Å, c = 18.062(5)Å, β =101.64(1)°, Z = 4 for 7. 197Au Mössbauer data are in good agreement with those for other linear P-Au-Cl containing complexes. The compounds were evaluated for in vitro anti-tumour activity
against two human tumours. Differential cytotoxicity was observed with activity comparable to
cisplatin, with the exception of one compound which was significantly more cytotoxic
Effect of gallium termination on InGaAs wetting layer properties in droplet epitaxy InGaAs quantum dots
Self-assembled quantum dots based on III-V semiconductors have excellent
properties for applications in quantum optics. However, the presence of a 2D
wetting layer which forms during the Stranski-Krastanov growth of quantum dots
can limit their performance. Here, we investigate wetting layer formation
during quantum dot growth by the alternative droplet epitaxy technique. We use
a combination of photoluminescence excitation spectroscopy, lifetime
measurements, and transmission electron microscopy to identify the presence of
an InGaAs wetting layer in these droplet epitaxy quantum dots, even in the
absence of distinguishable wetting layer photoluminescence. We observe that
increasing the amount of Ga deposited on a GaAs (100) surface prior to the
growth of InGaAs quantum dots leads to a significant reduction in the emission
wavelength of the wetting layer to the point where it can no longer be
distinguished from the GaAs acceptor peak emission in photoluminescence
measurements
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Increasing influence of heat stress on French maize yields from the 1960s to the 2030s
Improved crop yield forecasts could enable more effective adaptation to climate variability and change. Here, we explore how to combine historical observations of crop yields and weather with climate model simulations to produce crop yield projections for decision relevant timescales. Firstly, the effects on historical crop yields of improved technology, precipitation and daily maximum temperatures are modelled empirically, accounting for a nonlinear technology trend and interactions between temperature and precipitation, and applied specifically for a case study of maize in France. The relative importance of precipitation variability for maize yields in France has decreased significantly since the 1960s, likely due to increased irrigation. In addition, heat stress is found to be as important for yield as precipitation since around 2000. A significant reduction in maize yield is found for each day with a maximum temperature above 32 °C, in broad agreement with previous estimates. The recent increase in such hot days has likely contributed to the observed yield stagnation. Furthermore, a general method for producing near-term crop yield projections, based on climate model simulations, is developed and utilized. We use projections of future daily maximum temperatures to assess the likely change in yields due to variations in climate. Importantly, we calibrate the climate model projections using observed data to ensure both reliable temperature mean and daily variability characteristics, and demonstrate that these methods work using retrospective predictions. We conclude that, to offset the projected increased daily maximum temperatures over France, improved technology will need to increase base level yields by 12% to be confident about maintaining current levels of yield for the period 2016–2035; the current rate of yield technology increase is not sufficient to meet this target
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