Koshtoyants, Kh. S. & Yanson, Z. A. (1950). C.R. Acad. Sci. U.R.S.S. 75, 881. Through Chem. Ab8tr. 46, 5159 (1952). Koval'skil, V. V. (1947). C.R. Acad. Sci. U.R.S.S. 58, 1083. Koval'skil, V. V. (1948). Biochemistry, Leningr., 13, 131. Ling, A. R. & Nanji, D. R. (1923). J. chem. Soc. p. 2666. Manegold, E. & Solf, K. (1931). Kolloidzschr. 55, 273. Martin, A. J. P. (1949). Symp. biochem. Soc. 3, ...

Pengembangan produk komoditas menjadi olahan merupakan hal yang sangat penting untuk dilakukan. Karena dengan mengolah dapat menambah nilai jual dari tersebut. Selain itu, pengolahan juga membantu mengatasi hasil panen berlebih sehingga bisa menghindari terbuangnya Desa Tambaksari salah satu desa wisata menghasilkan kopi, pisang, keladi dan singkong. Kendala di alami saat ini adalah kurangnya p...

We focus on two approaches to formal concept analysis (FCA) of data with fuzzy attributes recently proposed in the literature, namely, on the approach via hedges and the approach via thresholds. Both of the approaches present parameterized ways to FCA of data with fuzzy attributes. Our paper shows basic relationships between the two of the approaches. Furthermore, we show that the approaches ca...

Intraguild predation is a trophic interaction in which two consumers compete for one resource and where one of the consumer species may also feed on its competitor. The intraguild predator’s diet follows from the relative strength of its interactions with its potential prey. Current view holds that weak interactions between species promote the stability of food webs. To the contrary, nutrient e...

In some cases, the relationship between an object set X and an attribute set Y is set up by means of a fuzzy context sequence. A particular case of this situation appears when we want to study the evolution in time of a fuzzy context. In this work, we deepen in the study of these situations. First we recover the fuzzy context sequence definition and the main results. After that, with the aid of...

In his seminal work Moral Notions, Julius Kovesi presents a novel account of concept formation. At the heart of this account is a distinction between what he terms the material element and the formal element of concepts. This paper elucidates his distinction in detail and contrasts it with other distinctions such as form-matter, universal-particular, genus-difference, necessary-sufficient, and ...

We describe the HR concept formation program which invents mathematical definitions and conjectures in finite algebras such as group theory and ring theory. We give the methods behind and the reasons for the concept formation in HR, an evaluation of its performance in its training domain, group theory, and a look at HR in domains other than group theory.

Presented is a reduction of fuzzy Galois connections and fuzzy concept lattices to (crisp) Galois connections and concept lattices: each fuzzy concept lattice can be viewed as a concept lattice (in a natural way). As a result, a simple proof of the characterization theorem for fuzzy concept lattices is obtained. The reduction enables us to apply the results worked out for concept lattices to fu...

This chapter argues that the computer-aided scientific knowledge discovery tool should facilitate scientific knowledge development through assisting scientists to build first-person knowledge and thirdperson knowledge. The chapter reviews cognitive theories of human knowledge construction and presents a hydrological modelling scenario as an exemplar of these concepts. A number of challenges for...