Learn More
This paper studies subjective tradeoff between fidelity and latency in an interactive audio--visual application over the Internet. In audio--video transmission, its temporal structure is disturbed by delay jitter of packets. The fidelity means how exactly the temporal structure is preserved. The degradation in the fidelity can be improved by playout buffer.(More)
— This paper quantitatively evaluates the mutually compensatory property in audio–video transmission over the In-ternet by the psychometric method. In our previous study, we used MOS (Mean Opinion Score) as the user–level QoS parameter ; however, MOS is an ordinal scale, and therefore, its value does not necessarily represent exact difference between the(More)
— This paper proposes a scheme for quantitative assessment of user-level (or perceptual) QoS for audio-video transmission by means of two psychometric methods: the method of paired comparisons and the law of comparative judgment. Moreover, we discuss QoS mapping from application-level QoS to user-level QoS by principal component analysis and multiple(More)
In this study, we investigated the effect of varying localized concentration gradients of NGF and Sema3A on the axonal outgrowth of embryonic chick DRG explants and primary neurons in vitro. Immobilized 2D NGF or Sema3A micropatterns were produced using photolithography on tissue culture cover slips. Two distinct regions were identified: slow, with little(More)
We recently reported that circular RNA is efficiently translated by a rolling circle amplification (RCA) mechanism in a cell-free Escherichia coli translation system. Recent studies have shown that circular RNAs composed of exonic sequences are abundant in human cells. However, whether these circular RNAs can be translated into proteins within cells remains(More)
— This paper investigates the effect of the mean and jitter of end–to–end delay on user–level QoS of live audio-video transmission. The temporal structure of continuous media can be disturbed by delay jitter of packets. The temporal disturbance causes subjective degradation of the media. On the other hand, long end–to–end delay also degrades quality of live(More)
— This paper proposes a session control method which provides a mechanism to achieve desirable user–level QoS (i.e., perceptual QoS) of audio–video transmission over IP networks. The proposed method, which is referred to as GPSQ (Guarantee of Psychologically Scaled Quality), utilizes a user–level QoS parameter of the interval scale in the psychometric(More)
— This paper proposes a real–time estimation method of perceptual QoS (i.e., user–level QoS) of audio–video transmission over IP networks. The estimated quality reflects cross–modal influences of audio and video in the framework of ITU–T Recommendation J. 148. As objective measures of audio and video for the use of the perceptual QoS estimation, we select(More)
— This paper studies a method of utilizing the cross– modal influences of audio and video, which is referred to as the mutually compensatory property here, in order to enhance user– level QoS (i.e., perceptual QoS) in IP networks. For that purpose, we clarify how the mutually compensatory property depends on the content type. We conducted an experiment on(More)
Odorant-binding proteins (OBPs) are extracellular proteins found in insect chemosensilla, where they participate in the sensing of odors, tastes, and pheromones. Although a large number of OBP genes have been identified in insect genomes, their molecular functions and biological roles have been clarified in limited cases. Two OBP genes, Obp57d and Obp57e,(More)