Lessons Learned from Migrating to an Online Electronic Business Management Course

This article describes the lessons learned while migrating an Electronic Business Management course from traditional face-toface delivery to online delivery across a six and a half year time frame. The course under review teaches students how to develop and construct a working information-based online business using free versions of online resources. Over 220 students completed this course as a traditional face-to-face class and over 300 students have completed this course as an online class. Student performance and satisfaction remained mostly consistent across delivery methods. Reflections include lessons learned and suggestions to aid in developing a course for online delivery. Course evaluations remained stable during the migration of the course to an online environment. The Electronic Business Management course migration was considered successful

A proposed measurement of the ß asymmetry in neutron decay with the Los Alamos Ultra-Cold Neutron Source

This article reviews the status of an experiment to study the neutron spin-electron angular correlation with the Los Alamos Ultra-Cold Neutron (UCN) source. The experiment will generate UCNs from a novel solid deuterium, spallation source, and polarize them in a solenoid magnetic field. The experiment spectrometer will consist of a neutron decay region in a solenoid magnetic field combined with several different detector possibilities. An electron beam and a magnetic spectrometer will provide a precise, absolute calibration for these detectors. An A-correlation measurement with a relative precision of 0.2% is expected by the end of 2002

Alfalfa Leaf-Cutter Bee: Management for Alfalfa Pollination in South Dakota

The alfalfa leaf-cutter bee, Megachile rotundata (Fabricius), was introduced into South D a k o t a from Utah in 1962 for alfalfa pollination testing. This leaf-cutting bee, because of its pollen collecting activmes, has shown considerable promise as a means of increasing yields of alfalfa seed. A native of Eurasia, it was introduced into eastern United States in the mid-thirties and by 1958 had moved across the country into Oregon. There is some indication that the alfalfa leaf-cutter bee may have become established in isolated locations in South Dakota during this initial cross-country movement

Status of the UCNτ experiment

The neutron is the simplest nuclear system that can be used to probe the structure of the weak interaction and search for physics beyond the standard model. Measurements of neutron lifetime and β-decay correlation coefficients with precisions of 0.02% and 0.1%, respectively, would allow for stringent constraints on new physics. The UCNτ experiment uses an asymmetric magneto-gravitational UCN trap with in situ counting of surviving neutrons to measure the neutron lifetime, τ_n = 877.7s (0.7s)_(stat) (+0.4/−0.2s)_(sys). We discuss the recent result from UCNτ, the status of ongoing data collection and analysis, and the path toward a 0.25 s measurement of the neutron lifetime with UCNτ

Alfalfa Seed Production

This publication discusses alfalfa production practices to obtain high seed yields. The information presented is based on research in Idaho and the experience of professional alfalfa seed producers in Idaho and South Dakota. It includes information on production requirements and systems, crop and soil management, choice of variety, pollination, weeds and weed control, insects and insect control, and harvesting

Alfalfa Seed Production

Alfalfa seed has high market value: producing certified adapted seed can become a more important enterprise for some South Dakota farmers. Around 100,000 acres are harvested for seed each year, but tho yield per acre is relatively low. Most producers harvest seed on a hit-and-miss basis. Only a few treat alfalfa seed as a major crop. Much of the alfalfa seed planted in South Dakota is raised in southern Idaho, eastern Oregon, southeastern Washington, and the San Joaquin Valley of California. But the acreage of certified seed of varieties recommended for South Dakota is gradually shrinking in western states. These seed growers are switching to non-dormant varieties adapted to the Southwest and to proprietary varieties because they produce more pounds of seed per acre and/or bring a higher price per pound

Impacting Student Perceptions about Careers in Information Systems

A shortage of graduates prepared to fill the available jobs in Information Systems remains. Pre-vious studies have verified the shortage and attempted to explain why students do not major in Information Technology related fields. Since prior studies identified lack of awareness regarding the discipline as a major reason in ignoring the major, the purpose of this study is to determine if reading an article about the work of a requirements analyst would positively impact the percep-tions of student respondents about careers in Information Systems. It was found that perceptions about careers in Information Systems related fields can be improved by exposing students to the work-life activities of Information Systems professionals. Using a pretest/posttest experimental design, perceptions regarding careers in IS were collected before and after students read Karl Wiegers ’ article “So You Want to be a Requirements Analyst? ” Posttest findings indicate statis-tically significant positive changes in participant’s perceptions about careers in Information Sys-tems related fields, especially related to Systems Analysts roles

A boron-coated CCD camera for direct detection of Ultracold Neutrons (UCN)

A new boron-coated CCD camera is described for direct detection of ultracold neutrons (UCN) through the capture reactions $^{10}$B (n,$\alpha$0$\gamma$)$^7$Li (6%) and $^{10}$B(n,$\alpha$1$\gamma$)$^7$Li (94%). The experiments, which extend earlier works using a boron-coated ZnS:Ag scintillator, are based on direct detections of the neutron-capture byproducts in silicon. The high position resolution, energy resolution and particle ID performance of a scientific CCD allows for observation and identification of all the byproducts $\alpha$, $^7$Li and $\gamma$ (electron recoils). A signal-to-noise improvement on the order of 10$^4$ over the indirect method has been achieved. Sub-pixel position resolution of a few microns is demonstrated. The technology can also be used to build UCN detectors with an area on the order of 1 m$^2$. The combination of micrometer scale spatial resolution, few electrons ionization thresholds and large area paves the way to new research avenues including quantum physics of UCN and high-resolution neutron imaging and spectroscopy.Comment: 10 pages, 8 figure