翻訳と辞書 Words near each other ・ Roy Prosser ・ Roy Prosterman ・ Roy Proverbs ・ Roy Präger ・ Roy Pugh ・ Roy Quinn ・ Roy Milton ・ Roy Minnett ・ Roy Minton ・ Roy Mitchell ・ Roy Mitchell (athlete) ・ Roy Mitchell (baseball) ・ Roy Mitchell (ice hockey) ・ Roy Mitchell-Cárdenas ・ Roy Mlakar ・ Roy model ・ Roy Mogg ・ Roy Moir ・ Roy Montgomery ・ Roy Montrell ・ Roy Moore ・ Roy Moore (Australian footballer) ・ Roy Moore (baseball) ・ Roy Moore (cyclist) ・ Roy Moore (disambiguation) ・ Roy Moore (footballer) ・ Roy Moran ・ Roy Morell ・ Roy Morgan ・ Roy Morgan Research Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Roy model ： ウィキペディア英語版 Roy model The Roy model is one of the earliest works in economics on self-selection due to Arthur Roy. The basic model considers two types of workers that choose occupation in one of two sectors. Roy's original paper deals with workers selecting into fishing and hunting professions, where there is no uncertainty about the amount of goods (fishes or rabbits) will be caught in a given period, but fishing is more costly as it requires more skill. The central question that Roy tries to answer in the original paper is whether the best hunters will hunt and the best fishermen will fish. While the discussion is non-mathematical, it is observed that choices will depend on the distribution of skills, the correlation between these skills in the population, and the technology available to use these skills.〔Roy, A. (1951): Some Thoughts on the Distribution of Earnings. Oxford Economic Papers 3(2), pp. 135-146.〕 George Borjas was the first to formalize the model of Roy in a mathematical sense and apply it to self-selection in immigration. Specifically, assume source country 0 and destination country 1, with log earnings in a country ''i'' given by ''wi= ai + ei'', where ''ei∼N(0, $s\_i^2$ )''. Additionally, assume there is a cost ''C'' associated with migrating from country 0 to country 1 and workers now all parameters and their own realization of e0 and e1. Borjas then uses the implications of the Roy model to infer something about what wages for immigrants in country 1 would have been had they stayed in country 0 and what wages for non-immigrants in country 0 would have been had they migrated. The third, and final, element needed for this is the correlation between the wages in the two countries, ''ρ''. A worker will choose to immigrate if ''a1 - a0 - C + e1 - e0 > 0'' which will happen with probability ''1 - Φ ( v )'' where ''v'' is $\backslash frac\; -)\})\})$ 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Roy model」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.