A recent surge of interest in the novel ideas of Large Extra Dimensions and their implications, such as the early unification of quarks and leptons, has prompted us to revive a paper [1] written twenty two years ago. In that paper, we provided a general discussion of quark-lepton unification characterized by the gauge group GS ⊗ GW with two couplings gS and gW and by the unification mass scales...

We model virtue as an asset on the marriage market: since men value virginity in prospective mates, preserving their virtue increases girls’ chances of getting a "good" husband, and therefore allows for upward social mobility. Consistent with some historical and anthropological evidence, we find that the diffusion (and the social value) of virginity, across societies and over time, can be deter...

Education is a key factor in promoting and sustaining economic growth and technological development. It is a complex social, cultural and ethical process designed in a social or cultural context. Education in its broadest sense is any act or experience that has formative effect on the mind, character or physical ability of an individual and in its technical sense education is the process by whi...

Healthy teeth are a vital and visible component of general well-being, but there is little systematic evidence to demonstrate its effect on labor market outcomes. In this paper, we examine the nature and magnitude of the effect of oral health on labor market outcomes by exploiting variation in access to fluoridated water during childhood. The politics surrounding the adoption of water fluoridat...

Big data has gained significant influence in recent years and is rapidly transforming the business, operations and technology landscape for a myriad of industries. Early adopters — particularly in retail and consumer products — have already derived significant business insights from big data management best practices, such as analysis of both the growing pools of structured transactional data f...

The sum total of funds poured into drug research by profit-seeking commercial entities now overshadows the total of government grants for biological research. An increasing fraction of that sum is earmarked for bioinformatics and genomics. While few if any investment decisions of this kind are based on a precise mathematical analysis, an attempt to quantify the economic value of bioinformation ...

The book is motivated by the lack of a core strategic theory of what firms do and their performance in the market and aims at developing a reasonably comprehensive theory of the firm for strategic management. In this regard, the book provides answers to the four major questions that a theory of the firm for strategy should address: what is a firm, why does it exist, what determines its size and...

Procedures for selecting sires are compared in terms of making maximum genetic progress in economic lnerit. A quadratic index, a simplified form of the quadratic index and a linear index to evaluate economic merit, and a restricted index to improve milk as much as possible while holding milk fat percentage constant, all result in nearly equal expected genetic progress in economic merit. Selecti...