616 research outputs found
"And He Called it Basketball" by Mary Whitcomb Hess (February 1941)
No full textThis article tilted, "And He Called it Basketball" was written by Mary Whitcomb Hess and was published in the Christian Herald in its February 1941 addition. It is 4 pages long, including the cover of the magazine. This is a copy of the original magazine. The article talks about how Naismith created basketball, his time at Kansas and how M. Whitcomb Hess got to know Dr. Naismith, and talks about Naismith's philosophy behind the creation of the game. In the article she also mentions Luther Gulick, Amos Alonzo Stagg, and Dr. Forrest Allen.To learn more about Dr. James Naismith, see: https://springfield.as.atlas-sys.com/agents/people/64
On the binary nature of the γ-ray sources AGL J2241+4454 (= MWC 656) and HESS J0632+057 (= MWC 148)
No full textWe present optical spectroscopy of MWC 656 and MWC 148, the proposed optical counterparts of the gamma-ray sources AGL J2241+4454 and HESS J0632+0 57, respectively. The main parameters of the Halpha emission line (EW, FWHM and centroid velocity) in these stars are modulated on the proposed orbital periods of 60.37 and 321 days, respectively. These modulations are likely produced by the resonant interaction of the Be discs with compact stars in eccentric orbits. We also present radial velocity curves of the optical stars folded on the above periods and obtain the first orbital elements of the two gamma-ray sources thus confirming their binary nature. Our orbital solution support eccentricities e~0.4 and 0.83+-0.08 for MWC 656 and MWC 148, respectively. Further, our orbital elements imply that the X-ray outbursts in HESS J0632+057/MWC 148 are delayed ~0.3 orbital phases after periastron passage, similarly to the case of LS I +61 303. In addition, the optical photometric light curve maxima in AGL J2241+4454/MWC 656 occur ~0.25 phases passed periastron, similar to what is seen in LS I +61 303. We also find that the orbital eccentricity is correlated with orbital period for the known gamma-ray binaries. This is explained by the fact that small stellar separations are required for the efficient triggering of VHE radiation. Another correlation between the EW of Halpha and orbital period is also observed, similarly to the case of Be/X-ray binaries. These correlations are useful to provide estimates of the key orbital parameters Porb and e from the Halpha line in future Be gamma-ray binary candidates
Determination of Spatially-Distributed Hydrological Ecosystem Services (HESS) in the Red River Delta Using a Calibrated SWAT Model
No full textThe principles of Integrated Water Resources Management (IWRM), conservation of natural capital, and water accounting requires Hydrological Eco-System Services (HESS) to be determined. This paper presents a modeling approach for quantifying the HESS framework using the Soil Water Assessment Tool (SWAT). SWAT was used–after calibration against remote sensing data–to quantify and spatially identify total runoff, natural livestock feed production, fuelwood from natural forests, dry season flow, groundwater recharge, root zone storage for carrying over water from wet to dry season, sustaining rainfall, peak flow attenuation, carbon sequestration, microclimate cooling, and meeting environmental flow requirements. The environmental value of the current land use and vegetation was made explicit by carrying out parallel simulations for bare soil and vegetation conditions and reporting the incremental ecosystem services. Geographical areas with more and fewer HESS are identified. The spatial and temporal variability of annual HESS services is demonstrated for the Day Basin—which is part of the Red River delta (Vietnam)—for the period 2003 to 2013. The result shows that even though the basin is abundant with HESS, e.g., 7482 m3/ha of runoff, 3820 m3/ha of groundwater recharge, the trend for many HESS values, e.g., micro-climate cooling, meeting environmental flow requirements, and rootzone storage, are declining. It is found and proven that quantified HESS indicators highlighted the provisioning and regulating characters of ecosystem services, as well as geographical hotspots across the basin. The SWAT model shows the capability of simulating terrestrial eco-hydrological processes such as climate, soil, and current land use. The methodology illustrates how eco-hydrologists can benchmark ecosystem values and include HESS in exploring river basin management scenarios, climate change studies, and land use planning
Optical Properties of Aerosols and Clouds (OPAC) 4.0 software and data package
No full textThis package provides version 4.0 of OPAC as described by Koepke, P., Gasteiger, J., and Hess, M.: Technical Note: Optical properties of desert aerosol with non-spherical mineral particles: data incorporated to OPAC, Atmos. Chem. Phys., 15, 5947–5956, https://doi.org/10.5194/acp-15-5947-2015, 2015.
The original software and data package was available for download at http://www.rascin.net since 30/05/2015.
Sadly, the maintainer of this website and co-author of OPAC, Michael Hess, is no longer among us and www.rascin.net was shut down.
The package provided here is a repacked version of OPAC 4.0 where only the archive format was changed.
Packaged by Josef Gasteiger (02/11/2022) - E-Mail: contact(at)mopsmap.ne
The Man Who Invented Basketball
No full textThis article tilted, "The Man Who Invented Basketball" gives the reader an insight into the creation of basketball. When the Dr. Naismith was in the process of creating the game of basketball, he asked the superintendent of buildings at the college for two boxes. "What do you want them for?", replied the superintendent. "I'm figuring out a game, and I need the boxes to put on pokes so that a large ball can be thrown into them". The superintendent responded by saying, "I've got to empty peach baskets at my house if they'll do you any good." With that brief conversation, the game of basketball was on its rise.To learn more about Dr. James Naismith, see: https://springfield.as.atlas-sys.com/agents/people/64
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