45 kindergarten and 45 second-grade children were administered the Matching Familiar Figures test (MFF) along with standard conservation of number and amount tests. 10 days later the MFF was ...readministered to 3 experimental groups matched on initial MFF performance. 1 group received instructions emphasizing the importance of accuracy, for another the importance of response speed was emphasized, and for the third "doing one's best" was emphasized. Significant main effects for grade, cognitive style, and condition were found. Significantly more second-grade than kindergarten children were able to modify their performance appropriately according to directions and significantly more fast-accurate than reflective children appropriately modified their performance. Results were interpreted as suggesting that during the early school years children learn to modify information-processing tempo appropriately according to situational demands. In addition, with the kindergarten sample a significant relationship between cognitive tempo and conservation was observed, with a greater number of reflective than impulsive children demonstrating conservation abilities.
MAGDEBURG, Germany- Traditionally, manufacturing engineers have manually timed assembly procedures to improve ergonomics, reduce waste and increase productivity. "... every individual movement has ...usually been timed by someone with a stopwatch or with digital time boards manned by employees," says Martin Woitag, research manager at the Fraunhofer IFF.
3 experiments are presented which examine the ability of 10-month-old infants to search in a new hiding place. The experiments showed that infants of this age can search correctly, but that errors ...are more likely if a delay is introduced and if cues previously associated with finding the object distract the infant after its disappearance into a new hiding place. A hypothesis of proactive interference in short-term memory is proposed to explain the above results and other findings reported in the literature.
COMING UP
Octane (Peterborough),
06/2022
228
Magazine Article
A selection of highlights from a calendar that suddenly seems to be more full than ever 28 April - 1 May Rallye de Durbuy Based in the pretty Belgian village of Durbuy, and with a Touring class for ...those who would prefer to enjoy the roads and the scenery without having to keep one eye on the stopwatch. zoutegrandprix.be 28-30 April Manx Classic On the Isle of Man, roads are closed to allow competition on the three traditional hillclimb courses, including the Sloe, which has recently been regraded and resurfaced. manxmotorracing.com 30 April - 1 May Donington Historic Festival Highlights of the Festival this time around will include the return of the Amon Cup for Ford GT40s, and a 30-car grid for the monstrous machines of Group C. doningtonhistoric.com 30 April - 1 May Keels & Wheels Beautiful old cars and boats share a stage at Lakewood Yacht Club in Texas. 13-15 May Padre-Figlio A couple of barriers to entry here, because the event is for father-and-son crews in Ferraris only - but if you have a suitable car and a suitable child, you'll enjoy a lighthearted regularity rally on super roads around St Tropez. happyfewracing.com 14-15 May Pendine Sands Hot Rod Races Members of the Vintage Hot Rod Association head to Pendine Sands to race on the vast stretch of beach for as long as the tide will allow. vhra.co.uk 14-15 May Beaulieu Spring Autojumble Vendors roll into Beaulieu laden with spare parts, books, models and automobilia to tempt you. beaulieu.co.uk 14-19 May Rallye des Princesses Richard Mille The ladies-only rally sets off from Paris and heads north to Le Touquet, before the crews go west towards the finish at La Baule in southern Brittany. peterauto.fr 17 May Brooklands Centenary of Speed A century to the day after KL Guinness broke the Land Speed Record at Brooklands, his 350hp Sunbeam returns to the venue, joined by other rapid vintage machines, including the 'Beast ofTurin'. brooklandsmuseum.com 20-22 May Concorso d'Eleganza Villa d'Esté At Lake Como, classics compete in classes including 'Speed Shapes Form', featuring the beautiful streamlined cars of the 1930s. concorsodeleganzavilladeste.com 20-22 May A Novice Trial Based in Bicester, this event is the perfect introduction to regularity rallying, offering a mix of expert tuition and enjoyable driving. heroevents.eu 20-22 May Spa Classic A fantastic meeting whatever the weather, featuring night-time action and an array of machinery including the endurance-racing prototypes of the 1990s. peterauto.fr 20-22 May Nürburgring Classic More than 800 cars will tackle Germany's most famous circuit over three days, but there will be plenty going on away from the track, too, including a gathering of classic race transporters. nuerburgringclassic.de 28 May Prescott Historique Cars and motorbikes spanning nine decades of motoring history charge up Prescott's hillclimb course. prescotthillclimb.co.uk 29 May Valletta Concours d'Elégance Classics assemble in Malta's capital, under the sunniest sky in Europe and against a backdrop of stunning baroque buildings. vallettaconcoursdelegance.com 29-31 May Cavallino Classic Modena To mark the 75th anniversary of Ferrari, the organisers of the long-running Palm Beach Cavallino Classic have arranged this additional event in Enzo's hometown. There will be a parade in the town centre on Sunday 29 May, followed by a concours on the Monday and a scenic drive on the Tuesday. cavallino.com 3-5 June Nostalgia Nationals The hottest of hot rods put on a show at Santa Pod, where the drag strip will also be open to all pre-1973 cars for a bit of 'run what ya brung' fun. santapod.co.uk 3-5 June Cincinnati Concours d'Elégance Ferrari and Shelby will both be honoured this year, but we were more excited by the news that there will be a display of classic SUVs at the Concours, which is hosted as usual by Ault Park. ohioconcours.com 5 June VSCC Donington Park Race Meeting The racers of the VSCC return to Donington after two years away, bringing some friends with them: a number of guest grids are set to be announced in the coming days. vscc.co.uk 11-12 June Thruxton Historic Pre-'63 GTs, Historic Touring Cars and more are let loose on the fastest circuit in the UK.
The BUILDER "Vintage motorcycle racing has taught me that you can't always have absolutes in things," Kenny Cummings says as he regards the 1936 Norton International sitting on a lift at his ...third-floor workshop in a massive old industrial building in Jersey City. Cummings is himself an accomplished racer, having won four consecutive BEARS (British European American Racing Series) championships from 2007-2010 aboard a Seeley Commando. ...this is his world: fast laps and parts spread over a concrete paddock floor, the absolutes of a crew chief's stopwatch, the gears and valves and pistons that move a body through space. ...in the world of vintage motorcycle racing, where modern engineering processes are applied to vintage architecture, performance itself is never absolute.
This paper presents three boiling experiments that can be integrated in the undergraduate heat transfer laboratory. The objective of these experiments is to enhance the understanding of boiling ...process by undergraduate mechanical engineering students. These experiments expose the students to several important concepts in boiling, such as subcooled boiling, modes of pool boiling, and Leidenfrost Phenomenon. The experimental setup and apparatus required to carry out these experiments is simple. It includes a metallic plate such as brass, stainless steel or aluminum, a heating source such as a Hot Plate, thermocouples, a stopwatch, a liquid dropper, and a camera. These equipments are inexpensive and available in almost all undergraduate heat transfer laboratories. I. Introduction Boiling and condensing processes play an important role in a large number of practical engineering applications, such as the production of electrical power from vapor cycles, production of refrigeration, and the design of petrochemical processes (such as the refining of petroleum and the manufacture of chemicals). Boiling and condensing are vapor-liquid phase change processes where fluid motion is involved. Due to this fact, boiling and condensing are classified as convective mechanisms. However, there are major differences between these mechanisms and single phase convective heat transfer. This is because there are significant differences between the various fluid properties in the two phases, such as conductivity, specific heat, and density. Also, there is a consumption or release of latent heat hfg which influences the heat transfer rates greatly during phase change. Both boiling and evaporation are liquid-to-vapor phase change processes, but there are major differences between the two. Evaporation process occurs at the liquid-vapor interface when the vapor pressure pv is less than the saturation pressure psat of the liquid at a given temperature. And evaporation does not involve bubble formation or bubble motion. Examples of evaporation are the evaporation of sweat to cool the human body and the drying of fruits and cloths. On the other hand, boiling occurs at the solid-liquid interface when the temperature of the surface is maintained at a temperature Ts that exceeds the saturation temperature Tsat corresponding to the pressure of the liquid that is in contact with the surface. The boiling process is characterized by
Compelling Nonfiction Stark, Nicole
MIT Technology Review.com,
01/2007
Newspaper Article
On a given Saturday, our four classes might be measuring stress and strain factors on a student-designed cable-stayed bridge, using Python to develop a personalized computer hangman game, testing the ...effect of wingspan variance on model planes flown in Johnson Athletic Center, and investigating the circuitry of a soda-vending machine (yes, sometimes there are samples). With endless requests for duct tape, stopwatches, X-Acto knives, goggles, and Play-Doh, sometimes it seems more as if I am on Let’s Make a Deal than at MIT. Because our students participate in the program for seven semesters, they grow up with us. “No one is considered an outcast in SEED’s social environment,” wrote a student in a program evaluation.
Many of the technology students in the first two years do not understand how the coursework is applied in the practice of engineering. These courses introduce engineering students to the type of ...tasks they are expected to handle on the job after graduation. Courses in automated manufacturing including computer numerical control (CNC) machining, materials handling, time and motion study, etc. should be designed to provide students hands on training towards their professional goals. The objective of this project is to manufacture a product using a complete manufacturing system. It includes manufacturing processes such as machining, materials handling, assembly, and inspection. The project also involves time and motion study, flow process charts, and operation sheets as usually required in an industrial production operation. The sample project presented here deals with the manufacturing of a shuttle selector manifold in an industry environment. The manifold was manufactured by a group of students in a local manufacturing company. Methods engineering and work measurements functions were performed wherever possible. The manifold is designed to work on hydraulic systems using petroleum based fluid up to 3000 psi. Mechanical and manufacturing technology students are expected to be proficient in and be familiar with broad based manufacturing subjects. One of the most important and demanding requirements should be their familiarity with the state of the art technology including manufacturing processes such as CNC machining, materials handling, assembly, and inspection and testing. In the course of this project, students get an exposure to not only the design and machining aspects but also get into methods engineering and motion time measurements. This project assignment include product design, CNC programming for a milling machine, and prototype manufacturing. In the course of this project students were required to prepare standard process sheets, flow process charts, standard method sheets for operation, stopwatch observation sheet, and videotaping of the manufacturing processes for motion time measurements. - $iit@ 1996 ASEE Annual Conference Proceedings ‘.JEJIIII’.? .
THE TOTAL SOLAR ECLIPSE, MARCH 1970 GLENN, WILLIAM H.
The Science teacher (National Science Teachers Association),
02/1970, Letnik:
37, Številka:
2
Journal Article
Los cronómetros y temporizadores se utilizan para numerosas aplicaciones y se encuentran entre los dispositivos más comunes calibrados por laboratorios de metrología. Las calibraciones de cronómetros ...suelen realizarlas tanto los laboratorios secundarios, como los laboratorios estatales o privados. Sin embargo, en países pequeños, el instituto nacional de metrología (INM) a menudo acepta cronómetros para la calibración con el patrón nacional.
En este trabajo se describe y presentan los resultados de una comparación de cronómetros que se llevó a cabo en Costa Rica, entre marzo del 2014 hasta octubre del mismo año, por el Laboratorio Metrológico de Variables Eléctricas (LMVE) del Instituto Costarricense de Electricidad (ICE), como INM designado en Costa Rica para Electricidad, Magnetismo, Tiempo y Frecuencia. La comparación involucró 6 laboratorios participantes y un cronómetro patrón viajero.
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