7 Result(s)
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Article
Yasunori Ishii
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Article
Characterization of the Oxide Scale Formed on T12 Water Wall Tube After Long-term Service in Supercritical Power Plant
Oxide scale control is one of the critical maintenance issues in fossil fuel power plant. Hence, the water treatment of the feed water has been changed from all-volatile treatment (AVT) to oxygenated treatment...
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International asymmetric R&D rivalry and industrial strategy
This study models an international duopoly under “asymmetrical” R&D investment rivalry, in which a firm from a cost-reducing country (CRC) conducts process R&D investment, a firm from a quality-improving count...
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Open AccessLazy workers are necessary for long-term sustainability in insect societies
Optimality theory predicts the maximization of productivity in social insect colonies, but many inactive workers are found in ant colonies. Indeed, the low short-term productivity of ant colonies is often the ...
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Open AccessPrevalence of human papillomavirus infection in the oropharynx and urine among sexually active men: a comparative study of infection by papillomavirus and other organisms, including Neisseria gonorrhoeae, Chlamydia trachomatis, Mycoplasma spp., and Ureaplasma spp
Oropharyngeal squamous cell carcinoma (OSCC) has shown a gradual increase in male predominance due to the increasing incidence of human papillomavirus (HPV)-associated OSCC. However, the mode of HPV transmissi...
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The mechanism underlying the regulation of work-related behaviors in the monomorphic ant, Myrmica kotokui
The mechanism underlying the regulation of the work performed by the members of a colony is a crucial factor in the colonial life of eusocial organisms. If the response thresholds of the workers vary, greater-...
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International duopoly with overseas production and strategic trade policies
This paper examines the strategic export policies in a reciprocal market model of an international Cournot duopoly where two firms in domestic and foreign countries reciprocally supply their products to other ...
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International cournol duopoly and R&D subsidies under demand uncertainly
Establishing a third-market model of international Cournot duopoly where home and foreign firms choose optimal R&D levels under demand uncertainty, this paper reexamines results on R&D subsidies proposed by Sp...
