57 research outputs found
Concentration of Population in Tokyo: A Survey
The mono-polar concentration of population in Tokyo has been intensifying steadily in Japan since the mid-1990s. This demographic movement stands in sharp contrast to the tri-polar (Tokyo, Osaka and Nagoya) demographic movement in the high growth era before the oil crisis of the early 1970s. Mono-polar in-migration reflects the change in industrial structure after the rapid yen appreciation and the two decades of stagnation caused by the bubble burst in an atmosphere of demographic aging and declining birth rate. One noteworthy recent feature of the population inflow into Tokyo is the increasing inflow of young females with post-secondary education, leading to even gloomier economic and social prospects in most outlying regions. This economic externality should be dealt with by means of well-designed policies which, benefitting from the experience of events several decades ago, avoid throttling the benefits of the market mechanism.This paper is based on a seminar presentation given in Japanese on July 11, 2015 at “Tokyo, a Mega-city in Asia,” organized by the Science Council of Japan. The seminar was produced by Prof. Kaoru Sugihara, National Graduate Institute for Policy Studies (GRIPS). Kenji Umetani, GRIPS professor at the time of the seminar, thanks Prof. Sugihara for kindly offering him the opportunity to present there
IDENTIFICATION OF PARTIALLY-EXPOSED METAL OBJECT
Abstract: This paper describes a method of automated type and pose (position and orientation) identification of partially exposed metal objects that makes excavation of hazardous materials safe and efficient. The object pose is estimated by matching a model of the object to the area that is extracted from the range image using the characteristics of metal objects. Experimental results show feasibility of type and pose identification of partially exposed objects
CRP in PMR and RS3PE syndrome
Polymyalgia rheumatica (PMR) and remitting seronegative symmetrical synovitis with pitting edema (RS3PE) syndrome are common inflammatory rheumatic diseases in the elderly. In this study, we investigate predictive factors which correspond to subsequent disease control of PMR and RS3PE syndrome. Twenty four patients, which contained 18 PMR and 6 RS3PE syndrome, were treated with initial dosages of 10-20 mg per day oral prednisolone, and the dosage of prednisolone was then tapered. Significantly higher initial CRP was observed in patients with poor disease control than in those with good disease control afterwards. The number of patients with negative CRP after 4 weeks was significantly more in patients with good disease control after 1 year than in those with poor disease control. Patients were shown to be in good disease control status after 1 year when CRP after 4 weeks became negative even if they had initial high CRP. Our study clarify that to make CRP negative after 4 weeks is associated with subsequent suppression of the disease activity and with decreased dosages of corticosteroids
Recolorable Posterization of Volumetric Radiance Fields Using Visibility-Weighted Palette Extraction
Volumetric radiance fields have recently gained significant attention as promising representations of photorealistic scene reconstruction. However, the non-photorealistic rendering of such a representation has barely been explored. In this study, we investigate the artistic posterization of the volumetric radiance fields. We extend the recent palette-based image-editing framework, which naturally introduces intuitive color manipulation of the posterized results, into the radiance field. Our major challenge is applying stylization effects coherently across different views. Based on the observation that computing a palette frame-by-frame can produce flickering, we propose pre-computing a single palette from the volumetric radiance field covering its entire visible color. We present a method based on volumetric visibility to sample visible colors from the radiance field while avoiding occluded and noisy regions. We demonstrate our workflow by applying it to pre-trained volumetric radiance fields with various stylization effects. We also show that our approach can produce more coherent and robust stylization effects than baseline methods that compute a palette on each rendered view.Computer Graphics ForumStylized Rendering41
Pose Estimation of Construction Materials Using Multiple ID Devices for Parts and Packets Unification
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