We formulate a model that captures the inter-dependence between hardware demand and software supply –indirect network e¤ect in the DVD industry. The identi…cation of the network e¤ect comes from the di¤erence in software availability across two di¤erent formats: VHS and DVD. We …nd that a 1% increase in the number of DVD titles raises the demand for DVD players by 0.68%. Simultaneously, a 1% in...

In cell phone sensor networks (CpSN), sensor-embedded cell phones communicate sensor data using Near Field Communication outlets such as Wi-Fi or Bluetooth. This paper considers a query dissemination application of CpSN, where sensor data belonging to a certain time window [ts,min, ts,max] is needed from a region of interest. Existing approaches, such as ADAPT, use adaptive broadcast ranges at ...

OBJECTIVE To examine whether children between 12 and 25 months of age learn words from an infant-directed DVD designed for that purpose. DESIGN Half of the children received a DVD to watch in their home over the course of 6 weeks. SETTING All participants returned to a laboratory for testing on vocabulary acquisition every 2 weeks. PARTICIPANTS Ninety-six 12- to 24-month-old children. M...

BACKGROUND Older adults with multiple sclerosis (MS) exhibit disease-related impairments such as compromised strength, balance, mobility, coordination, and quality of life (QOL). Exercise training as an intervention to reverse these conditions in older adults with MS is limited. OBJECTIVE The objective of this pilot trial was to examine the effects of a DVD exercise intervention targeting fle...

Bir deprem anında, bitişik yapılar arasındaki mesafe kapandığında, yapılara hasar veren çekiçleme kuvvetleri oluşmaktadır. Bu çalışmada tek serbestlik dereceli (TSD) bir sistemin rijit duvara çarpması sonucu oluşan sismik davranış incelenmiş ve çarpışmayı önleyecek viskoz damper kapasitesi optimizasyon çalışmasıyla belirlenmiştir. Çekiçleme kuvvetlerinin oluşmaması için yapının yükü etkisindeki...

OBJECTIVES This pragmatic randomized trial evaluated the effectiveness of a tailored educational intervention on oral health behaviors and new untreated carious lesions in low-income African-American children in Detroit, Michigan. METHODS Participating families were recruited in a longitudinal study of the determinants of dental caries in 1021 randomly selected children (0-5 years) and their ...