This paper explores the use of head-mounted displays (HMDs) as a way to deliver a front row experience to any audience member during a live event. To do so, it presents a two-part user study that compares participants reported sense of presence across three experimental conditions: front row, back row, and back row with HMD (displaying 360° video captured live from the front row). Data was collected using the Temple Presence Inventory (TPI), which measures presence across eight factors. The reported sense of presence in the HMD condition was significantly higher in five of these, including spatial presence, social presence, passive social presence, active social presence, and social richness. We argue that the non-significant differences found in the other three factors-engagement, social realism, and perceptual realism-are either artefacts of participants' personal taste for the song being performed, or the effects of using a mixed-reality approach. Finally, the paper presents a system description for low-latency, 360° video live streaming using off-the-shelf, affordable equipment and software.
The a n a l y t i c a l p r o c e d u r e d e s c r i b e d i n t h i s document i s a method f o r t h e d e t e r m i n a t i o n of p l u t o n i u m i n w a t e r w h i c h i s b e i n g c o l l a b o r a t i v e l y t e s t e d a c c o r d i n g t o an i n t e r a g e n c y a g r e e m e n t between t h e U.S. E n v i r o n m e n t a l P r o t e c t i o n Agency (USEPA) and t h e U.S. Energy Research and Development A d m i n i s t r a t i o n (USERDA). D a t a from t h e c o l l a b o r a t i v e test w i l l be examined and i n f o r m a t i o n on t h e p r e c i s i o n and a c c u r a c y o f t h e method w i l l be o b t a i n e d . F i n a l USEPA and USERDA documents w i l l be p r e p a r ed d e s c r i b i n g t h e r e s u l t s of t h e c o l l a b o r a t i v e t e s t . I n o r d e r t o o b t a i n a method f o r c o l l a b o r a t
i v e t e s t i n g , t h e s c i e n t i f i c l i t e r a t u r e o n t h e d e t e r m i n a t i o n of p l u t o n i u m i n water w a s f i r s t examined. Based on c e r t a i n e s t a b l i s h e d c r i t e r i a , a method from t h e l i t e r a t u r e w a s chosen and t e s t e d . S i m i l a r methods were tested and m o d i f i c a t i o n s were made u n t i l a f i n a l p r o c e d u r e w a s e s t a b l i s h e d . One of t h e p r i n c i p l e c r i t e r i a w a s t h a t t h e method b e c o s t e f f e c t i v e . Thus t h e method t h a t w a s f i n a l l y a d o p t e d u s e s t e ch n i q u e s t h a t a r e r e l at i v e l y s i m p l e , and i t i s a l s o d e s i g n e d t o h a n d l e a l a r g e number of s a m p l e s . Also t h e equipment and r e a g e n t s a r e g e n e r a l l y common t o t h e a n a l y t i c a l l a b o r a t o r y .
A procedure for the determination of uranium isotopes in water has been developed at Mound Facility. The procedure consists of coprecipitation of uranium with ferrous hydroxide, a nitric-hydrofluoric acid dissolution if the sample contains sediment, separation of the uranium by anion exchange in hydrochloric acid, electrodeposition, and alpha pulse height analysis. After a single-laboratory evaluation at Mound, the present procedure was collaboratively tested by seven other laboratories. A copy of the procedure and four water samples, ranging from 1 to 2000 disintegrations per minute (dpm) of uranium per litre of water, were sent to the participating laboratories. Two of these samples were taken from actual effluents discharged to the environment and the third was a spiked “substitute ocean water” sample. The fourth sample contained “diluted pitchblende ore” of a known uranium concentration added to a litre of deionized water. Data from the seven collaborating laboratories have been evaluated. The average uranium concentrations determined by these laboratories agreed with the reference values to within 5 percent, and the average tracer recovery was 70 percent. The precision of the results approached counting statistics error for the three water samples which did not contain sediment.
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