1,721,556 research outputs found
Jack R. Ohle
No full textPresident Jack Ohle began serving as the 16th President of Gustavus Adolphus College on 1 July 2008. According to the President's Office, "Ohle served as President of Wartburg College in Waverly, Iowa for ten years [prior to coming to Gustavus]. . . . Before accepting the presidency at Wartburg, Ohle served Drake University in Des Moines, Iowa, for 11 years, first as vice president for institutional advancement and later as senior vice president for external affairs and secretary to the university. Prior to that, Ohle was vice president for advancement at Nebraska Wesleyan University for ten years.
Failure of Overhead Line Equipment (OHLE) Structure under Hurricane
No full textPresently, in modern railway systems, train or rolling stocks are powered by electricity through the overhead wire or the third rail on ground. Overhead line equipment (OHLE) is the component for the electric train which provides electric power to the train. OHLE is, for one or two tracks, normally supported by cantilever masts. OHLE is one of vulnerable components in railway system due to its slenderness. Note that, as previously recorded, the strong hurricane caused substantial damage over the large area and possibly knocked the train out of the track and cause electricity failures on OHLE. In fact, cantilever mast subjected to wind and hurricane actions may fail due to the incorrect design, material defects, improper support connections and its foundation etc. In this study, a mast structure with varying rotational soil stiffness is used to construct dynamic influential lines for soil-structure integrity prediction. Finite element model updating technique has been used to perform the dynamic responses of OHLE considering soil-structure interaction of OHLE. The scaled hurricanes at various magnitudes are applied to the OHLE. It is interesting that the support condition plays a significant role in the dynamic responses of OHLE under strong hurricanes. The obtained results demonstrate that the strong hurricane can cause a catastrophic damage to the OHLE which is linked to the failure of electric train. The insight will raise the awareness of engineers for better design of cantilever mast structure and its support condition
Unite For Literacy: Bringing Books in Cup'ik, Tlingit, and Inupiaq to Kids Everywhere
No full textKathryn Ohle discusses her research in early childhood education and her work with Unite For Literacy. Her project, to promote early literacy and language preservation, seeks to provide bilingual children's books in Alaska Native languages, online and in print, to families, children, and teachers. Kathryn Ohle is associate professor in Early Childhood Education, COE at UAA. She is the recipient of a Selkregg Award, a CCEL grant
Cascading effects on Overhead Line Equipment (OHLE) of extreme wind and flood events
No full textIn modern railway systems, overhead line equipment (OHLE) is the component for the electric train which provides electric power to the train. Due to its slenderness, cantilever mast, which supports the OHLE for one or two tracks, is one of the vulnerable components in railway system. Note that, as previously recorded, the strong wind caused considerable damage over the large area and possibly cause electricity failures on OHLE. According to previous studies, it was found that OHLE can be failed due to the large contact wire displacement caused by earthquake and ground borne vibrations. This study presents the cascading effects of extreme wind and flood events on OHLE. It is interesting to note that flood event may undermine the bearing capacity led to improper support conditions and its foundation resulting in soil stiffness reduction. Finite element model updating technique has been used to perform the dynamic responses of OHLE considering soil-structure interaction of OHLE subjected to extreme winds. The scaled winds at various magnitudes are applied to the OHLE. It is interesting that the flood event plays a significant role in the dynamic responses of OHLE by reducing its support stiffness. Moreover, strong wind together with flood event can easily cause damage to OHLE. The obtained results demonstrate that the extreme wind and flood events can significantly cause catastrophic damage to the OHLE which linked to the failure of electric train. The insight will raise the awareness of engineers for better design of cantilever mast structure and its support condition for future natural hazards
Cascading effects on Overhead Line Equipment (OHLE) of extreme wind and flood events
No full textIn modern railway systems, overhead line equipment (OHLE) is the component for the electric train which provides electric power to the train. Due to its slenderness, cantilever mast, which supports the OHLE for one or two tracks, is one of the vulnerable components in railway system. Note that, as previously recorded, the strong wind caused considerable damage over the large area and possibly cause electricity failures on OHLE. According to previous studies, it was found that OHLE can be failed due to the large contact wire displacement caused by earthquake and ground borne vibrations. This study presents the cascading effects of extreme wind and flood events on OHLE. It is interesting to note that flood event may undermine the bearing capacity led to improper support conditions and its foundation resulting in soil stiffness reduction. Finite element model updating technique has been used to perform the dynamic responses of OHLE considering soil-structure interaction of OHLE subjected to extreme winds. The scaled winds at various magnitudes are applied to the OHLE. It is interesting that the flood event plays a significant role in the dynamic responses of OHLE by reducing its support stiffness. Moreover, strong wind together with flood event can easily cause damage to OHLE. The obtained results demonstrate that the extreme wind and flood events can significantly cause catastrophic damage to the OHLE which linked to the failure of electric train. The insight will raise the awareness of engineers for better design of cantilever mast structure and its support condition for future natural hazards
Calendula meuselii Ohle 1975
No full text<p> <b>6.</b> <i>Calendula meuselii</i> Ohle (1975a: 6); Fennane & Ibn Tattou (1998: 23); Valdés <i>et al.</i> (2002: 672); Ibn Tattou & Fennane (2009: 28); Dobignard & Chatelain (2011: 187); Gonçalves <i>et al.</i> (2014: 271). Type:—Plate 1 in Ohle (1975a: Tafel I) (lectotype <b>designated here</b>).</p> <p> <b>Description</b>:––Perennial herbs. Stems (15.5) 18.1–44.3 (57) cm long, erect to ascending, densely white-arachnoid pubescent, not viscous. Basal leaves (4.4) 4.6–8.4 (10) × (1.3) 1.4–2.3 (2.4) cm, with (0.2) 0.3–0.5 (0.6) mm thick, oblanceolate to spatulate, apex acute to slightly acuminate, margins entire to sub-entire, densely white-arachnoid pubescent. Capitula solitary, (2) 3.3–3.8 (4.5) cm diameter, concolorous, yellow to orange. Achenes heteromorphic: outer achenes rostrate (12) 14–17 × (1.8) 2–2.3 (3.3) mm, ± straight or slightly curved, without dorsal spines or muricate; middle achenes bialate (9.7) 10.2–11 (11.7) × (4.7) 5.3–7 (7.5) mm, with a rostrum (1.3) 1.7–2.2 (3.3) mm, lateral wings sinuate-dentate, sometimes with a rudimentary ventral wing; inner achenes vermiculate-exalate (5.8) 6.3–7.3 (7.8) × (1.7) 2–2.3 (2.7) mm, falcate with a small ventral wing, or with an apical and/or a basal tooth. Figure 16.</p> <p> <b>Habitat and distribution</b>:— Limestone cliffs at elevations of 650–800 m. It is found in sub-humid to humid Mediterranean bio-climate. Endemic to Massif du Zerhoun, Jbel El <i>–</i> Rherraf near Sidi Kdat, and Jbel Takerma (distribution based on herbarium specimens and literature). Although at MGC there is a specimen collected in Zoumi, we did not find any population in that locality. Figure 13.</p> <p> <b>Conservation status</b>:—Critically Endangered (CR). This species is threatened by climate change, due to its small-restricted range. Presently only one population is known but based on herbarium specimens there may be others in the Massif of Zerhoun. Nevertheless, recent searches done by others in the area have been unsuccessful. The number of mature individuals is estimated to be <50 based on field observations. Based on the only subpopulation known by the team, the AOO is 4 km 2, which qualifies the species for CR. Therefore, we propose its conservation status as CR B1ab (i, ii, iv, v) + 2ab (i, ii, iv,v).</p> <p> <b>Chromosome number</b>:— <i>2n</i> = 18.</p> <p> <b>Genome size</b>:—1.71 ± 0.03 pg.</p> <p> <b>Notes</b>:—Several attempts have been made to find type specimens of <i>Calendula meuselii</i> without success. The holotype cited by Ohle (1975a: 4) is ‘ <i>Marokko, Djebel Zerhoun</i>. leg. Sauvage 1932, Privatherbar Nr. 6235 (Montpellier)’, a collection of Charles Sauvage (1909–1980). Sauvage was a botanist who worked in Morocco and later moved to Montpellier where his herbarium is kept.The specimen was loaned to Ohle but was never returned to Montpellier (Caroline Loup, pers. comm.). Other collections that are cited by Ohle (1975a: 4) are ‘ <i>Zerhoun-Moussoua, Nordnord̂stlich er Djebel Takerma</i>, leg. Sauvage 1932 (RAB), leg. Baillier 1955 (RAB)’. These have also not been found at RAB. In the absence of any specimens, an illustration can be designated as lectotype (Art. 9.12 of the ICN, Turland <i>et al.</i> 2018). Two plates were published by Ohle (1975a), Plate 1 (Tafel I) consists of a photograph of the holotype and Plate 2 (Tafel II) represents closeups of an infrutescence and achenes. Plate 1 (Ohle 1975a: Tafel I) is here designated as lectotype.</p> <p> <i>Calendula meuselii</i> is distinguished from other species in the <i>C. maroccana</i> group by having leaves with very dense white-arachnoid indumentum, and by the absence of cymbiform and vermiculate-alate achenes. The vermiculate-exalate achenes are usually large and falcate.</p>Published as part of <i>Gonçalves, Ana Carla, Ouhammoud, Ahmed, Amirouche, Rachid, Santos, Conceição, Figueiredo, Estrela & Silveira, Paulo, 2023, A taxonomic revision of Calendula (Asteraceae) in Morocco, including some taxa from Algeria and Tunisia, pp. 1-83 in Phytotaxa 605 (1)</i> on pages 29-33, DOI: 10.11646/phytotaxa.605.1.1, <a href="http://zenodo.org/record/8181518">http://zenodo.org/record/8181518</a>
Bewegungsbiografien wertschätzen und entwickeln – Stärkung der Prävention, Fürsorge und Vorsorge durch Pflegekräfte
No full textDieser Beitrag zum Denkanstoß 17 „Zukunft der Pflege“ ergänzt die Beiträge des Denkanstoßes um weitere Aspekte, die nicht in dem Heft berücksichtigt werden konnten. In dem Beitrag von Ohle Wrogemann geht es um Bewegungsbiographien und um die Stärkung von Bewegung in den Biographien, besonders auch hochaltriger Menschen
Responses of mast structure and overhead line equipment (OHLE) subjected to extreme events
No full textAt present, in modern railway systems, train or rolling stocks are powered by electricity through the overhead wire or the third rail on the ground. Overhead line equipment (OHLE) is the component for the electric train which supplies electric power to the train. OHLE is, for one or two tracks, normally supported by cantilever masts, while a portal frame structure supports OHLE for more than two tracks because of the requirement for more space. OHLE and its support, particularly cantilever mast, are the vulnerable components in a railway system because of their high slenderness and vibration sensitivity. This chapter presents the responses of the cantilever mast, OHLE, and its support under extreme events using finite element analysis (FEA). It is clear that OHLE failure could be observed because of the failure of the mast structure, particularly when the structure–support condition is poor (e.g., broken bolt, yielding weld, improper design and construction, and soft ground). The insight will increase the awareness of engineers for a better design of OHLE, mast structure, and its support condition to encounter natural disasters and future uncertainties. Moreover, the outcome will help civil and track engineers to effectively and efficiently inspect OHLE structures and their supports by using the structural responses.<br/
Supporting native languages & encouraging early literacy with children's books
No full textIn April of 2014, the President of the National Alliance to Save Native Languages provided testimony to the U.S. House on the need to support programs that help meet the linguistically unique educational needs of Native students while also preserving, revitalizing, and using these students’ native languages. These educational needs are especially prominent in Alaska, as Native students currently have lower rates in literacy achievement (Sparks, 2012; ISER, 2009) and higher rates of high school dropouts (Alaska Dept. of Education, 2011) than any other group of students. However, the need to preserve their native languages might be even greater, for the average Alaska Native tongue has fewer than 1,000 speakers, the majority of whom are over the age of 70 (Twitchell, reported in Kelly, 2014), a trend not likely to change when only two of the twenty languages in use in Alaska are being picked up by younger generations (Verdugo, 2006) and all but one are listed as declining (ANLPAC, 2014).
To combat both issues, we are working on a project that provides dozens of children’s books to families, children, and teachers in Alaska Native languages through the use of a free digital library with translated texts, as delivered through UniteForLiteracy.com. This approach was formulated based on recommendations from the Alaska Native Language Preservation and Advisory Council, who suggested the best method to reinforce Alaska Native languages and culture was to promote whole family learning and speaking, which is best fostered in learning opportunities that focus on early childhood language acquisition (2014). Additionally, we kept in mind research that suggests one of the best indictors of children’s success in school is related to how much they have been read to (Kern & Friedman, 2009). Attention was also paid to recommendations from the National Assessment of Educational Progress, who indicated that the number of books in the child’s home and the frequency with which they read was also related to higher test scores (U.S. Department of Education, 2013).
While results from this project are still forthcoming, the aim of this presentation is to share our approach, implementation efforts, and resulting artifacts and anecdotal records. There is no reason that these efforts have to be limited to Alaska Native languages and thus our hope is that others interested in language conservation see this is a viable option for preserving and promoting their native language while also increasing educational outcomes for students.
Citations:
Alaska Department of Education (2011). Statistics & Reports (Data file). Retrieved from http://education.alaska.gov/Stats/
ANLPAC (Alaska Native Language Preservation and Advisory Council). (2014, July). Alaska Native Language Preservation and Advisory Council: Report to the Governor and Legislature, Juneau, AK: Evans Smith, A., Counceller, A.G.L., Churchill, D., Alvanna-Stimpfle, B.Y., Charles, W.
Institute of Social and Economic Research (ISER). (2009). Kids Count Alaska, 2009/2010. Anchorage, AK: Hanna, V., Schreiner, I., DeRoche, P., Ikatova, I., & Trimble, E. Kern, M.L. & Friedman, H.S. (2008). Early educational milestones as predictors of lifelong academic achievement, midlife adjustment, and longevity. Journal of Applied Developmental Psychology, 30(4), 419-430.
Twitchell, L. (2014), as quoted by Kelly, C. (2014, February 18). Supporters cheer Alaska Native languages bill. Message posted to KTOO News. http://www.ktoo.org/2014/02/18/supporters-cheer-alaska-native-languages-bill/
Sparks, S. (2012, July 3). NAEP Scores Still Stalled for Native American Students. Education Week, 31(36).
U.S. Department of Education, Institute of Education Sciences, National Center for Educational Statistics, National Assessment of Educational Progress (NAEP) 2013 Reading Assessment.
Verdugo, R.R. The Invisible Minority: The Education of the American Indian Population. Paper presented at the annual meeting of the American Sociological Association, Montreal, Canada. (As referenced in National Education Association. (2006, September). Focus on American Indians/Alaska Natives, Endangered Indian Languages. As retrieved from http://www.nea.org/assets/docs/HE/mf_aianfocus06.pdf
Condition monitoring of overhead line equipment (OHLE) structures using ground-bourne vibrations from train passages
No full textThe most modern railway systems have fully adopted clean energy for train and track operations. Trains or rolling stocks are powered by electricity through the overhead wire or the third rail on ground. Commonly, the overhead line equipment (OHLE), which supplies electric power to the trains, is widely adopted in new railway networks around the world since its system enables trains to operate smoothly while track inspectors can safely work on tracks. The OHLE is supported by mast structure, which is located at the lineside along the track. The mast structure is often made of steel structure built on mat or pile foundation. Due to the train passages, ground-bourne periodic forces may cause damage to the OHLE structure especially mast structure, connections and its foundation, which can lead to operational failure of train electrification. On this ground, the structural integrity of mast structures must be inspected regularly. In this study, the modal analysis is used in order to identify the mode shapes and natural frequencies of the mast structure. A mast structure with varying rotational soil stiffness is used to construct dynamic influential lines for soil-structure integrity prediction. Finite element model updating technique has been used to perform modal analysis and modal parameter identification. This paper presents the integrated numerical of three-dimensional mast structure considering soil-structure interaction to evaluate the condition of OHLE structures for maintenance planning. The outcome of this study will help civil and track engineers to effectively and efficiently inspect OHLE structures using ground borne vibrations from train passages
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