Mathematics exists as rooted in human ideas, ways, and techniques to respond their environments. Along with its development, mathematics has been taught through formal education or schooling the flat- not flexible ways far from students' social cultural lives. Indonesia is rich culture, including Special Region of Yogyakarta (DIY). It called a city culture. Educators are yet aware this richness...

It is well-known that a countably injective module is Σ-injective. In Proc. Amer. Math. Soc. 316, 10 (2008), 3461-3466, Beidar, Jain and Srivastava extended it and showed that an injective module M is Σ-injective if and only if each essential extension of M(א0) is a direct sum of injective modules. This paper extends and simplifies this result further and shows that an injective module M is Σ-i...

We examine the antecedents and consequences in developing countries of creating a national stock exchange, a core technology of financial globalization. We study local conditions and global institutional pressures in the rapid spread of exchanges since the 1980s and examine how conditions at the point of adoption affected exchanges’ subsequent vibrancy. Little prior research connects the proces...

Karo Batak ceremonial curing practices in urban Indonesia take place in a disputed zone of acts and meanings, in which neither social nor cultural coherence can be presumed by the analyst. Examining the therapeutic efforts of an urban Karo spirit possession cult aimed at curing the soul loss suffered by a young man, the Christian son of one of the cult's premier spirit mediums, this paper quest...