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Simulating Headlamp Illumination Using Photometric Light Clusters
2009-01-0110 Simulating Headlamp Illumination Using Photometric Light Clusters William T.C. Neale, David R. Hessel Kineticorp, LLC Copyright © 2009 SAE International ABSTRACT which and the degree to which something is visible. Current methods exist fore evaluating the limits of Assessing the ability of a driver to see objects, visibility which rely on replicating as closely as possible pedestrians, or other vehicles at night is a necessary the conditions present at the time of the accident and precursor to determining if that driver could have performing an in situ evaluation, through observation avoided a nighttime crash. The visibility of an object at and light measurement (Adrian, 1998, pp. 181-88; Klein, night is largely due to the luminance contrast between 1992; Owens, 1989). the object and its background. This difference depends on many factors, one of which is the amount of However, replicating the lighting conditions under which illumination produced by a vehicle’s headlamps. This an accident occurred can be difficult and expensive and paper focuses on a method for digitally modeling a may be impossible if the accident site no longer exists or vehicle headlamp, such that the illumination produced by has changed significantly. If one were able to digitally the headlamps can be evaluated. The paper introduces simulate the accident environment these constraints the underlying concepts and a methodology for could, in many cases, be eliminated. However, creating simulating, in a computer environment, a high-beam a simulated environment would have its own obstacles, headlamp using a computer generated light cluster. In including the need to accurately model the various light addition, the results of using this methodology are sources in that environment. -
Clothing List: Rock Climbing Day Trip
CLOTHING LIST: ROCK CLIMBING DAY TRIP When selecting clothing, an important consideration is the material. Cotton clothing does not keep you warm if it is wet and it takes a very long time to dry. This can be desirable on a hot, sunny day but can mean hypothermia on a cool, cloudy, breezy day. Wool and synthetic fabrics dry quickly and will keep you warm, even if they are wet. Several layers of clothing made of these materials are best. This allows you to add or remove layers as your activity level and the temperature change throughout the day. If you do not have everything on the list we encourage you to borrow items from Carolina Outdoor Education’s surplus clothing bin. We have rain gear and warm layers available. Make sure and let your Instructors know what you need at the pre-trip meeting. * - Indicates items available from Carolina Outdoor Education FOOTWEAR Approach Shoes: You will need lightweight hiking boots or sturdy tennis shoes for the steep, rocky approach to the climbing site. Tennis shoes can be used for climbing, as well. *Climbing shoes: Bring them, if you have them. We have some you can borrow, as well. CLOTHING T shirt: You will want a short sleeve shirt for climbing. *Warm layer: Medium or heavy-weight shirt or sweater made of fleece or wool. (WEATHER DEPENDENT) *Rain layer: You should bring raingear, in case we are caught in a storm and to help keep you warm. Pants/shorts: Dress for the weather. You may want to have a warm pair of pants over shorts, so you can adjust for the weather and activity level. -
HEADLAMPS Northen Lights in Norway © 2019 - Petzl Distribution - Pascal Touraine CONTENTS
HEADLAMPS Northen lights in Norway © 2019 - Petzl Distribution - Pascal Touraine CONTENTS Over forty years ago, Petzl created the first headlamp • A family business - Expertise and dedication that fit "all-on-the-head", including the battery pack. to quality - Solutions for sports enthusiasts and An innovation that cavers and mountaineers quickly professionals - Production and inspection - Distribution ................................................... 2 to 6 embraced. In 2000, the first compact LED headlamp, the TIKKA, was born. A revolution. Today, it is no • Lighting: the Petzl standard............................... 7 accident that Petzl is the standard for lighting on the go for outdoor enthusiasts who run, climb, and explore. • The Petzl difference .......................................... 8 It is simply because their expectations are guiding us. • Choosing a Petzl headlamp ............................ 10 Expectations to which we want to respond with products that are practical, reliable, powerful, and adapted to your • CLASSIC headlamps .................................... 12 • ACTIVE headlamps ....................................... 18 activities. • PERFORMANCE headlamps ........................ 24 • SPECIALIZED headlamps ............................ 30 • Headlamp accessories.................................... 36 Find the complete Petzl offer, related advice, reports and contact information for retailers in your country. The expertise of a family business The Petzl adventure began with Fernand Petzl’s passion for caving, a passion to which he dedicated his talents as a craftsman. Petzl expertise began to grow with the design and crafting of solutions for ascending, descending, belaying and moving about in the dark. In 1970, the first "Fernand Petzl" brand products were produced in a workshop in Saint-Nazaire-Les Eymes, Isère, France. The Petzl company, created in 1975, was a pioneer in the refinement of solutions for progression on ropes and in the dark. -
WPSU Treasure Trek Journal
Let’s go on a mission — a WPSU Treasure Trek mission to explore nature and find caches! Step 1: Sign Up! Sign up for the WPSU Learning Families email to receive weekly adventure sites across Centre, Blair, What is geocaching? Huntington counties. Sign up at Geocaching is a modern day, wpsu.org/subscribe worldwide treasure hunt where participants can both hide and seek containers called geocaches. To find a geocache, visit a site like Geocaching.com to search for caches hidden in your area. Step 2: Complete our Survey! These kits were generously supported by a grant from the PA Department of Education and your feedback will help us encourage future funding for initiatives like Use this journal to record your this. https://wpsumm.wufoo.com/ cache and all your exciting findings forms/q15jv7qw1progr8/ and document nature around you. What do I need to get started? All you need is a smartphone with the free app from geocaching. com or a GPS device, a pen and the WPSU Treasure Trek Journal. Step 3: Get Trekking! Additionally, you may choose Learn about plants, animals, and to bring along a flashlight or bugs as you complete the activity headlamp, camera, water and journal. Bring the journal and snacks, sunscreen and bug spray. compass with you to explore along the way as you find the cache! Find Why geocaching? more information at learn.wpsu. Geocaching as a family encourages org/treasuretrek children to explore their surroundings, use observational skills, and have an adventure. Critical and creative thinking skills are necessary when seeking a geocache. -
2021 Outdoor Catalog
2021 OUTDOOR CATALOG PERSONAL LIGHTING PRODUCTS OUTDOOR OUTDOOR OUTDOOR Tried and tested to help you go farther, higher and faster. Nate Dodge 1 PRINCETON TEC PRINCETON TEC 2 SNAP SERIES Magnetic Design OUTDOOR The Snap head unit can be removed from it’s headlamp bracket and secured to most metal surfaces via it’s strong magnet. Josh Preissner Seth Morris ® For those looking for an option that preserves their night vision, the SNAP Solo ® Still packing 300 lumens of dimmable white light and the popular magnetic base, RGB offers 300 lumens of dimmable white light as well as Red, Green, or Blue task the SNAP Solo is available in 4 new colors and remains the perfect hands free light SNAP SOLO RGB lighting. With its magnetic base the light can be easily removed from the included SNAP SOLO for any occasion. Changing a flat on the side of the road? Need to light up a less headlamp bracket, used as a handheld, and attached to most metallic surfaces than perfectly lit corner of the garage? Out for an evening stroll around camp? NEW MAGNETIC HEMAG- for hands free jobs. The SNAP RGB also features a unique custom programming NEW MAGNETIC HEADLAMP The simple single button interface is popular with anyone looking for a super NETIC HEADLAMP feature which allows you to set which colored LED comes on first. versatile light you can use anywhere. SPECS TECHNOLOGY SPECS TECHNOLOGY POWER 300 Lumens POWER 300 Lumens LAMP 1 Maxbright LED w/ Spot (dimmable) 300 LAMP 1 Maxbright LED w/ Spot (dimmable) 300 TRI-COLOR 1 Tri-color Red, Green, Blue LED RUNTIME 155 -
Technical Information Light – Headlamps Technical Information Headlamps
Technical Information Light – Headlamps Technical Information Headlamps Tasks of frontlighting Headlamps illuminate the road space in front of the car and must meet the requirements of all road users. In particular, the low-beam functions are subject to legal regulations designed to protect oncoming traffic from being dazzled. “Making the night into day” by maximizing the light output is therefore subject to reasonable restrictions. Only within the scope of legal regulations can danger situations in the case of poor visibility be gradually defused by improving many parameters of headlamp technology. The following lighting functions can be combined in the headlamp: Functions for seeing 1 Low beam is available as a series product in addition to the standard function, as an extended function of the Variable Intelligent Lighting System construction kit, called VARILIS®: 1a Static bend lighting as an additional low beam element 1b Dynamic bend lighting as swiveling low beam 1c Cornering light is a lamp function from the point of approval regulations, but is often integrated into the headlamp. New lighting functions are ready for use in 2007. 2 High beam can also be designed in swiveling form as bend lighting, mainly in combined systems. To limit the maximal value on public road space, also in combi- nation with auxiliary driving lamps, the legislator has defined a reference number. In the field of rally and off-road driving, those restrictions are not relevant. For that kind of application, performance is limited only by technical basic conditions such as package space, temperature and available light sources. 3 Front fog light is also used as an auxiliary lamp. -
Table of Contents
Media Table of contents Media information & fast facts ......................................................................................................... 3 Important media information ....................................................................................................................................................4 Race week Media Center..............................................................................................................................................................4 Race week schedule of events ..................................................................................................................................................7 Quick Facts ...........................................................................................................................................................................................8 Top storylines ......................................................................................................................................................................................10 Prize purse .............................................................................................................................................................................................13 Time bonuses ......................................................................................................................................................................................14 Participant demographics ............................................................................................................................................................15 -
Updated 2019 Completemedia
April 15, 2019 Dear Members of the Media, On behalf of the Boston Athletic Association, principal sponsor John Hancock, and all of our sponsors and supporters, we welcome you to the City of Boston and the 123rd running of the Boston Marathon. As the oldest annually contested marathon in the world, the Boston Marathon represents more than a 26.2-mile footrace. The roads from Hopkinton to Boston have served as a beacon for well over a century, bringing those from all backgrounds together to celebrate the pursuit of athletic excellence. From our early beginnings in 1897 through this year’s 123rd running, the Boston Marathon has been an annual tradition that is on full display every April near and far. We hope that all will be able to savor the spirit of the Boston Marathon, regardless whether you are an athlete or volunteer, spectator or member of the media. Race week will surely not disappoint. The race towards Boylston Street will continue to showcase some of the world’s best athletes. Fronting the charge on Marathon Monday will be a quartet of defending champions who persevered through some of the harshest weather conditions in race history twelve months ago. Desiree Linden, the determined and resilient American who snapped a 33-year USA winless streak in the women’s open division, returns with hopes of keeping her crown. Linden has said that last year’s race was the culmination of more than a decade of trying to tame the beast of Boston – a race course that rewards those who are both patient and daring. -
Chicago Year-By-Year
YEAR-BY-YEAR CHICAGO MEDCHIIAC INFOAGO & YEFASTAR-BY-Y FACTSEAR TABLE OF CONTENTS YEAR-BY-YEAR HISTORY 2011 Champion and Runner-Up Split Times .................................... 126 2011 Top 25 Overall Finishers ....................................................... 127 2011 Top 10 Masters Finishers ..................................................... 128 2011 Top 5 Wheelchair Finishers ................................................... 129 Chicago Champions (1977-2011) ................................................... 130 Chicago Champions by Country ...................................................... 132 Masters Champions (1977-2011) .................................................. 134 Wheelchair Champions (1984-2011) .............................................. 136 Top 10 Overall Finishers (1977-2011) ............................................. 138 Historic Event Statistics ................................................................. 161 Historic Weather Conditions ........................................................... 162 Year-by-Year Race Summary............................................................ 164 125 2011 CHAMPION/RUNNER-UP SPLIT TIMES 2011 TOP 25 OVERALL FINISHERS 2011 CHAMPION AND RUNNER-UP SPLIT TIMES 2011 TOP 25 OVERALL FINISHERS MEN MEN Moses Mosop (KEN) Wesley Korir (KEN) # Name Age Country Time Distance Time (5K split) Min/Mile/5K Time Sec. Back 1. Moses Mosop ..................26 .........KEN .................................... 2:05:37 5K .................00:14:54 .....................04:47 -
Automatic Headlamp Switching System Using Accelerometers
AUTOMATIC HEADLAMP SWITCHING SYSTEM USING ACCELEROMETERS Kai-Chi Chan and Yiu-Sang Moon Department of Computer Science and Engineering, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong Keywords: Automobile, Night vision, Accelerometer, Alpha beta filter. Abstract: This paper presents a two-sensor method to enhance the nighttime driving safety. It consists of two accelerom- eters and an array of auxiliary swiveling headlamps. An alpha beta filter is proposed to stabilize the readings of the accelerometers. With the kinematics of a turning car, the cars turning path is predicted based on the steer- ing angle measured by the accelerometers so that the relevant auxiliary swiveling headlamps will be switched on accordingly. In this paper, we will study the performance of the alpha beta filter. Test results demonstrate that our angular measurement method is an efficient way for proper road illumination along curved paths. 1 INTRODUCTION immediately even if the drivers do not follow the path history or the digital map data is not up-to-date. It Improving nighttime illumination is a crucial step for is also more robust when compared with traditional traffic safety (Plainis et al., 2006). Although the de- approaches because the data used to determine the il- velopment of headlamp system has drawn much at- luminating direction is collected inside the car but not tention recently, many issues remain unsolved. The from the road scenes or Global Positioning System direction of headlamps should be able to change ac- (GPS) signals which are unstable and easily affected cording to curved paths to enhance drivers visibil- by environment. -
Former Hostage to Speak at ND by SEAN S
ACCENT: Holy Cross Associates in Chile Balmy Mostly sunny, high in the mid VIEWPOINT: Don’t overlook poverty 70s. JEJ T h e O b s e r v e r ___________________ VOL . XXI, NO. 43 MONDAY, NOVEMBER 2, 1987 the independent newspaper serving Notre Dame and Saint Mary's Former hostage to speak at ND By SEAN S. HICKEY Damascus, Syria, in Nov. 1984. Staff Reporter “They met with Syrian offi cials, Palestinian ■‘groups and A former Beirut hostage will almost anyone they could find, be speaking tonight at Galvin including representatives of Life Science at 8 in room 283. Syrian prime-minister Assad,” A Beirut bureau chief for the said Gaffney. He added it is un Cable News Network and pres clear whether Levin escaped ently a Woodrow Wilson Fellow because of his own ingenuity or at Princeton University, Jerry his wife’s efforts. Levin was abducted by the Is “The mystery is whether he lamic Jihad on March 7, 1984 escaped or was released in while walking to work in directly,” said Gaffney. “Most Beirut. The militant Shi’ite observers feel that it was spe group held him prisoner for 343 cial that he got away as op days until February 1985. posed to a disguised release. “Notre Dame had a secret Anyway it is clear that Lucille connection in Levin’s escape,” Levin met her husband’s cap said Father Patrick Gaffney, tors.” an assistant professor and a Islamic Jihad, a radical Middle East specialist. Shi’ite Muslim group issued a That connection was statement the week after they Landrum Bolling, director of released Levin saying they the Notre Dame Institute of decided to do so because they Ecumenical Studies in Israel, determined he was not a sub who was contacted by Levin’s versive. -
Dugo Se Smatralo Da Trčanje Na Duge Staze Nije Za Žene I Da One Nisu U Stanju Pretrčati Maraton
Dugo se smatralo da trčanje na duge staze nije za žene i da one nisu u stanju pretrčati maraton. Ključni trenutak u povijesti ženskog trčanja desio se na Bostonskom maratonu 1967. godine. Naime, do tada je ženama bio zabranjen nastup, pa se u trku prijavila Kathrine Switzer, ali sa svojim inicijalima K. V. Switzer, te tako dobila startni broj i platila startninu od 3$ (danas bi platila 250$:)). Trku su pratili i novinari u pratećem otvorenom autobusu i jedan je zamijetio neobične „obline“ ispod trenirke K.V. Switzer i glasno viknuo „Hej, ovaj trkač ne izgleda baš kao Karl“. To je čuo i direktor trke Jock Sample, koji je poludio, sišao iz autobusa i pokušao izgurati Kathrine sa staze i skinuti joj startni broj. Međutim, s njom je trčao njezin dečko koji je pak odgurnuo direktora, a sve su to snimili fotografi koji su bili u tom autobusu, od čega je nastao prvorazredni skandal, popraćen dobrom foto-dokumentacijom. Vijest je odmah izašla u New York Timesu i svim ostalim vodećim dnevnim tiskovinama, pa je cijeli slučaj maksimalno dobio na popularnosti, što je samo ubrzalo žensku trkačku revoluciju. Tek kasnije se saznalo da je godinu dana ranije u Bostonu trčala maraton i Roberta Gibb, ali se nije službeno prijavila i trčala je bez startnog broja, pa sve skupa nije dokumentirano. Kathrine Switzer je pak postala heroina ženskog trkačkog pokreta, i kasnije je otrčala 35 maratona (od toga još 7 puta u Bostonu), a jednom je i pobijedila u New Yorku s rezultatom 2:51. Već dvije godine kasnije, u Bostonu su žene službeno mogle trčati maraton (njih četiri), a cijeli slučaj je ubrzao proces uvrštavanja ženskog maratona u olimpijski program (do tada je najduža ženska olimpijska disciplina bila 3000m).