Migrating to Motherhood: The Story of Female Blue Crabs in Their Ecosystem

Grades: 6-12 Subjects: Life Science This lesson guides students through an investigation of the migratory patterns of blue crabs, their life stages, ecosystem use by life stage, harvest, and human impacts to their population

Implementation of a Pre-Course in Organic Chemistry I to Improve Student Course Outcomes

The transition from general chemistry to organic chemistry can be difficult for students and induce feelings of anxiety and unpreparedness. Furthermore, students often have not retained prerequisite knowledge and skills from general chemistry that are necessary for student success in organic. In addition, at-risk student populations may feel these effects more intensely and may be more likely to shy away from STEM majors and courses as a result. Thus, a free, asynchronous, three-week pre-course was created to help students review important prerequisite skills. Students voluntarily participated and the relationship between participation in the pre-course and course outcomes for the organic chemistry I sequence was examined. All students (n=555) enrolled in the regular semester course completed a survey assaying background characteristics, self-efficacy, self-confidence, belongingness, and motivation as well as a general chemistry skills assessment (GCSA). Data collected was used to compare students who enrolled to those that did not enroll, compare students across semesters (Fall compared to Spring), and determine how the pre-course affected student course outcomes, specifically the number of students passing versus receiving a D, F or W. Students who enrolled in the pre-course had significant differences in their background characteristics such as increased levels of engagement and confidence in chemistry, and Fall and Spring student populations had significant differences. Since enrolled students as well as Fall versus Spring students had different background characteristics, and random assignment into the pre-course was not possible, a case control analysis was used. Students (n-235) were matched by first-generation status, GCSA score and engagement. Students who enrolled in the pre-course were significantly less likely to receive a D, F, or W (

EC88-785 Traffic Emergencies ... Prepare for Them!

So you\u27re taking a trip. How far? To town, to the fair or to a football game? Perhaps it\u27s a vacation trip of hundreds of miles. Whatever the distance, prepareation is important. This circular discusses the things that you should know and have for your trip. Your credentials and equipment should be up-to-date at all times so if you have to leave for a long trip on a moment\u27s notice you will be ready

EC80-718 Caution : Look Up! Power Lines May Be Overhead

Extension circular 80-718 is about power lines may be overhead

EC91-734 NOISE ... Sound Without Value (Tractor Sound Levels, 1970-1990)

Oh, for the peace and quiet of the country. Surely you have heard this statement. How true this was in years gone by. Now, however, the country environment is often filled with the noise of thumping cylinders, and turning gears in modern tractors — noises previously associated with cities have moved into rural areas. What do the words sound and noise mean? Some people refer to sound as something pleasant. For example, a number of tones placed together might result in a beautiful symphony. However, if these notes are played too loudly or off key, they might be referred to as noise. One definition of noise is a weed in the garden of sound. This extension circular covers the effects of noise on the ears and contains tables showing the decibels that tractors emit

EC88-785 Traffic Emergencies ... Prepare for Them!

So you\u27re taking a trip. How far? To town, to the fair or to a football game? Perhaps it\u27s a vacation trip of hundreds of miles. Whatever the distance, prepareation is important. This circular discusses the things that you should know and have for your trip. Your credentials and equipment should be up-to-date at all times so if you have to leave for a long trip on a moment\u27s notice you will be ready

EC77-719 Safety with Center Pivot Irrigation

Extension Circular 77-719 is about center irrigation pivots and how to safely use them

EC80-718 Caution : Look Up! Power Lines May Be Overhead

Extension circular 80-718 is about power lines may be overhead

Nutzerorientierter Entwurf innovativer Mobilitätskonzepte für urbane Räume

Dieser Beitrag beschreibt einen methodischen Ansatz zur nutzerorientierten Konzeption eines individuell abrufbaren Personentransportsystems für den städtischen, öffentlichen Personennahverkehr (ÖPNV). Der Begriff des individuell abrufbaren Personentransportsystems umfasst das aufeinander abgestimmte Zusammenwirken einer Fahrzeugautomation und einer Informations- und Kommunikationsinfrastruktur (IKT). Die IKT-Unterstützung umfasst eine Smartphone-App zur individuellen Buchung von Fahrten durch die Fahrgäste sowie ein Hintergrundsystem zur Abbildung der vorliegenden Fahrgastbuchungen auf einen optimierten Fahrzeugeinsatz. Für die nutzerorientierte Gestaltung eines solchen individuell abrufbaren Personentransportsystems werden die spezifischen Anforderungen unterschiedlicher Nutzergruppen umfassend analysiert. Hierfür wird in diesem Beitrag die Persona-Methode vorgestellt, welche im Forschungsprojekt „Urbane Mobilität“ des Deutschen Zentrums für Luft- und Raumfahrt e.V. (DLR) angewendet wird. Dabei werden forschungsgeleitete, innovative Mobilitätskonzepte für den urbanen Raum als Labordemonstrator prototypisch entwickelt und erprobt. In einem nächsten Schritt erfolgt ein Transfer der im Labor entwickelten Konzepte in ein Reallabor

Betreibermodell einer Forschungsinfrastruktur für die Entwicklung intelligenter Mobilitätsdienste im realen Verkehrsumfeld

Mit der Anwendungsplattform Intelligente Mobilität (AIM) steht am Institut für Verkehrssystemtechnik des Deutschen Zentrums für Luft- und Raumfahrt e.V. (DLR) ein umfassender Baukasten für die Entwicklung und prototypische Erprobung intelligenter Mobilitätsdienste und neuer Verkehrsinfrastrukturkomponenten, sowie zugehöriger Software zur Verfügung. Mit dem langfristigen Betrieb der Forschungsinfrastruktur bis geht das DLR weit über den Rahmen konventioneller Forschungsprojekte mit temporär betriebenen Anlagen hinaus. Die geschaffene Forschungsinfrastruktur steht für gemeinsame Projekte mit Partnern aus Industrie und Wissenschaft zur Verfügung. Die Wiederverwendung vorhandener Bausteine führt zu einer Kosten- und Zeitersparnis in der praktischen Demonstration wissenschaftlicher Erkenntnisse. Dieser Beitrag stellt die besonderen Herausforderungen eines dauerhaften Betriebes einer Forschungsinfrastruktur im öffentlichen Straßenraum dar