In order to cope with the large amounts of data that have become available in genomics, mathematical tools for the analysis of networks of interactions between genes, proteins, and other molecules are indispensable. We present a method for the qualitative simulation of genetic regulatory networks, based on a class of piecewise-linear (PL) differential equations that has been well-studied in mat...

most theories in social sciences have aspects of causality, but understanding the causes of social phenomena is not possible through statistical correlation tests. to overcome this problem, fuzzy qualitative comparative analysis was developed to identify the cause of social phenomena. having qualitative roots, this method tests the necessary and sufficient causes for the emergence of a social p...

Richard Levins has advocated the scientific merits of qualitative modeling throughout his career. He believed an excessive and uncritical focus on emulating the models used by physicists and maximizing quantitative precision was hindering biological theorizing in particular. Greater emphasis on qualitative properties of modeled systems would help counteract this tendency, and Levins subsequentl...

this research aims to understand mother’s and girl’s expectations from their spouses, and shows the difference between these two generation’s expectations. along this, by using qualitative approach and deep semi-structured interview, we studied the expectations difference among 14 mothers and 14 girls resided at tehran city’s fifth region (area).results from the research showed that women’s exp...

abstract background: historical research has limitations in applying proper and credit-worthy chronology to clarify the data. in this methodology, the application of oral history is one of the ways in which answers to questions addressed by the research theme are elicited. oral history, as a clear and transparent tool, needs to be applied with guidelines for qualitative researchers regarding da...

This paper proposes a theoretical method for qualitative trend curve analysis, supposing the situation that data quality is poor and the amount of data is very large. Here the ‘trend curve’ means, for example, a sequence of monthly temperature over twelve months at a location. The paper first defines ‘qualitative’ characteristics of a trend curve in terms of isomorphic relations. Second, these ...

This paper aims at exploring and discus­ sing the possibilities of applying qualitative content analysis as a (text) interpretation method in case study research. First, case study research as a research strategy within qualitative social research is briefly presented. Then, a basic introduction to (qualitative) content analysis as an interpretation method for qualitative interviews and other d...

BACKGROUND The knowledge and use of qualitative description as a qualitative research approach in health services research is limited.The aim of this article is to discuss the potential benefits of a qualitative descriptive approach, to identify its strengths and weaknesses and to provide examples of use. DISCUSSION Qualitative description is a useful qualitative method in much medical resear...