Search results for "Artifact"
showing 10 items of 193 documents
Diffusion equations with negentropy applied to denoise mammographic images.
2006
Mammography is a radiographic technique used for the detection of breast lesions. The analysis of the digital image normally requires a previous application of filters as a preprocessing step to reduce the noise level of the image, while preserving important details to carry out a suitable diagnostic. In the literature, there are a large amount of denoising techniques applied to different medical images. In this work we have studied the performance of a diffusive filter with a stopping condition based on the statistical concept of negentropy, applied to denoise mammographic images. The negentropy has been succesfully prove with other denoising methods as independent component analysis by th…
Quality Model - Master Plan and DNA of an Information System
2012
Every theory has its surroundings and postulates. So has a theory about quality models, and it is better to make the main lines of these ideas explicit before presenting the theory itself. A human made information system (IS) as a technical artifact exists and operates always in the context of societies, organizations, personal lives etc. It is a tool used for gathering, storing, processing, presenting and exchanging (communication) information. These activities can be termed “information behavior” (Allen et al., 2011). Accordingly the context of an information system has a two-tiered structure (Figure 1). The inner tier, information behavior, is subordinate to the outer tier, human society…
Towards a Better Understanding of the Dynamics of Platform as a Service Business Models
2014
Platform as a Service (PaaS) solutions are changing the way software is produced, distributed, used, and priced. However, there has been little research into understanding the dynamics of PaaS business models and how these business models should be designed to establish a flourishing ecosystem around these platforms. Using design science research (DSR) we first identified the main design elements of PaaS business models as well as their relationships by investigating 24 PaaS providers. The resulting classification scheme as well as the qualitative systems dynamics model (in form of a causal loop diagram (CLD)) facilitates a better understanding of the adoption dynamics of PaaS business mode…
Learning cultural literacy through creative practices in schools cultural and multimodal approaches to meaning-making
2022
Introduction: Cultural Literacy and Creativity -- A Sociocultural Approach to Children’s Visual Creations -- Multimodality: Art as a Meaning-Making Process -- Tolerance, Empathy, and Inclusion -- Living Together -- Social Responsibility -- Belonging and Home -- Cultural Literacy During COVID-19 -- Conclusions: Cultural Literacy in Action -- Index. This open access book discusses how cultural literacy can be taught and learned through creative practices. It approaches cultural literacy as a dialogic social process based on learning and gaining knowledge through emphatic, tolerant, and inclusive interaction. The book focuses on meaning-making in children and young people’s visual and multimod…
A method for rapid generation of competitive standard molecules for RT-PCR avoiding the problem of competitor/probe cross-reactions.
1995
The analysis of gene expression is a widespread issue in a growing number of fields such as molecular genetics, immunology, and medical diagnostics. The ideal method for mRNA detection should be fast, inexpensive, sensitive, and reliable. Well-elaborated standard methods such as Northern hybridization, Sl-mapping, and RNAse protection are useful and recommended, but only reverse transcription PCR (RT-PCR) gives the highest possible sensitivity required. For many issues it is necessary not only to detect a distinct mRNA but to compare changes in mRNA levels. The use of RT-PCR for such semiquantitative and quantitative approaches resolves problems attributable to the intrinsic property of PCR…
Applying constructivist approach to educational business games: Case REALGAME
2003
Business organizations and their employees face ever-increasing complexity and accelerating changes. This brings along the need for training models that can transmit knowledge and skills needed in this kind of environment. Business process understanding is especially required. This article evaluates business games in the light of constructivism, a view of learning emphasizing the need to anchor training to everyday activities and concrete contexts, and introduces a new computer-based business game. The purpose of this construction is to give the business game participants a realistic view of business processes and thus enhance participant business process perception. The primary aim of the…
Is experience a useful resource for business model innovation?
2016
ABSTRACTBusiness model innovation has been proposed as a powerful strategic tool, able to offer competitive advantage, create markets and even reshape industries. Despite these powerful effects, little research has been conducted into studying and improving business model generation methods, and even less study has gone into analysing how to define new business models that can exert a disruptive effect on markets and industries. Our work tries to fill this gap, analysing whether experience encourages or discourages the generation of disruptive business models. An empirical analysis was carried out using an experimental methodology. The results seem to contradict the currently dominant Resou…
Business models and opportunity creation: How IT entrepreneurs create and develop business models under uncertainty
2015
How can entrepreneurs develop business models for markets in which the technology is constantly changing-or create business models for markets that do not exist? These are fundamental questions for information technology IT entrepreneurs, and for information systems IS scholars who seek to develop a theoretical understanding of business models. The case study presented in this paper addressed these questions, demonstrating how a small software firm developed its business model over a 15-year period in cloud gaming markets. Based on the empirical findings, a preliminary theoretical model is presented. The aim of the model is to increase scholarly understanding of how business models are crea…
Understanding the determinants of business process modelling in organisations
2011
PurposeThe purpose of this paper is to address a theoretical gap in the business process management (BPM) literature on factors that influence the acceptance and use of business process modelling (PM) in organisations. The paper seeks to contribute to theory building and practice in BPM through better understanding of important determinants of PM adoption and use.Design/methodology/approachA combination of literature review and 34 interviews in context was used to develop a PM acceptance model that was subsequently empirically tested using survey data from 74 companies.FindingsThe paper provides empirical insights about how business PM can be influenced by many factors in the organisational…
Short-term occupations at high elevation during the Middle Paleolithic at Kalavan 2 (Republic of Armenia).
2021
The Armenian highlands encompasses rugged and environmentally diverse landscapes and is characterized by a mosaic of distinct ecological niches and large temperature gradients. Strong seasonal fluctuations in resource availability along topographic gradients likely prompted Pleistocene hominin groups to adapt by adjusting their mobility strategies. However, the role that elevated landscapes played in hunter-gatherer settlement systems during the Late Pleistocene (Middle Palaeolithic [MP]) remains poorly understood. At 1640 m above sea level, the MP site of Kalavan 2 (Armenia) is ideally positioned for testing hypotheses involving elevation-dependent seasonal mobility and subsistence strateg…