Ultraviolet hydrogen-discharge lamp

Device provides stable flux output for calibration of ultraviolet spectrum

Accurate robot simulation

Robot simulators are valuable tools for researchers to develop control code in a fast and efficient manner without spending time setting up physical experiments. Most simulators, however, do not model the real world accurately. As a consequence, when a program is run on a real robot it may behave differently from when run in simulation. In this paper we present a method of developing a robot simulator that models the operation of a real robot in a real environment accurately, using real robot data and system identification to construct the simulator's model

The Greater Sum of Collaboration: Adding Value to Mathematics Education Through Teamwork

The role of a Mathematics Specialist can vary from pre-K through grade 8 schools. One of the most distinguishing factors involves the relationship between the Mathematics Specialists, administrators, and teachers. In this article, we share our experiences in a school culture that supports common language, collective commitments, trust, and transparency. Using this model, we have experienced high levels of teacher professionalism and student success. As lifelong learners, we continually reflect upon our practices and look for ways to meet the needs of our students. This occurs by implementing purposeful meeting structures that allow us to facilitate discussions around mathematics content, lesson planning, assessment results, and student progress. Administrators Brian Butler and Diane Kerr, along with Mathematics Specialists Tracey Hulen and Jennifer Deinhart, have formed a powerful relationship at Mason Crest Elementary School. This is a Title I school with 560 students, pre-K through grade 5, which promotes reflective practices and allows for flexibility and creativity as we continue to strengthen and improve our practices. Together, we share a story of our collaborative journey with teachers and students to create an effective mathematics program that embraces a conceptual learning philosophy. Ultimately there are two kinds of schools: learning-enriched schools and learning impoverished schools. I have yet to see a school where the learning curves ... of the adults were steeped upward and those of the students were not. Teachers and students go hand in hand as learners ... or they don\u27t go at all. [1] Roland Barth, Hand in Hand, We All Lear

The continuously supported rail subjected to an axial force and a moving load

Axial compression force effects in welded rails on critical velocity for high speed trai

The Effects of Ultraviolet Light on Anthocyanin Accumulation in the Adventitious Roots of Sedum wrightii (Crassulaceae)

Several studies have supported the idea that anthocyanin accumulation may be a possible protection mechanism in plants against DNA damage caused by ultraviolet radiation (UV). This study explored the accumulation of anthocyanins in the adventitious root tips of Sedum wrightii using the following treatments: UVA, UVA+low UVB, and UVA+high UVB. Following exposure to UV radiation, samples were analyzed for anthocyanin accumulation using an ethanol extraction procedure. Using ELISA, additional root samples were analyzed for indicators of DNA damage: cyclobutane pyrimidine dimers (CPDs) and pyrimidine (6-4) pyrimidone dimers (6-4 PPs). The anthocyanin concentrations were significantly higher in the UVA + high UVB treatment than the other groups. The ELISA resultsshowed that a difference occurred between the control and the treatments of UVA, UVA+low UVB and UVA+high UVB for CPDs and between the control and the UVB treatments for 6-4 PPs. Anthocyanins accumulated with increased UV exposure. However, additional research is needed to determine the significance of anthocyanins in the adventitious root tips of S. wrightii

The Quiet American and the novel

This essay presents an analysis of the novel "The Quiet American" by Graham Greene. Theme of writing in the novel; Concept of auto-criticism of discourse in the novel; Analysis of characters in the fiction, including Pyle and Fowler; Information on the screenplay made by Joseph L. Mankiewicz for the novel in 1958. [Abstract from EBSCOhost]postprin

Conrad's magic circles

Discusses the significance of circles in Joseph Conrad's 1915 novel "Victory." Thematic homology in the novel; Repetitiveness and predictability of circulation; Examples of the deceptiveness of straight lines; Partly contradictory functions of sanctuary and futility of the figure of the magic circle in the novel; Redemption of the circle as the figure for sanctuary. [Abstract from EBSCOhost]postprin

Chinese boxes: "Typhoon" and Conrad's history of the Chinese

This essay examines the novel "Typhoon," by Joseph Conrad, as a story about Chinamen coolies and seamen onboard a steamer transporting Chinese laborers. It argues that the Chinese boxes of the coolies represent several versions of the history of the Chinese and that the coolies are also representatives of a civilization with ideas and institutions, a law and order of nature. It also describes the images of Chinese life and their association to sociality, cooperation, nourishment, simplicity, peace, and culture.postprin