Search results for "construct"
showing 10 items of 3723 documents
Collective Behavior of Price Changes of ERC-20 Tokens
2020
We analyze a network constructed from tokens developed on Ethereum platform. We collect a large data set of ERC-20 token prices; the total market capitalization of the token set is 50.2 billion (109) US dollars. The token set includes 541 tokens; each one of them has a market capitalization of 1 million US dollars or more. We construct and analyze the networks based on cross-correlation of tokens’ returns. We find that the degree distributions of the resulting graphs do not follow the power law degree distribution. We cannot find any hierarchical structures nor groupings of ERC-20 tokens in our analysis. peerReviewed
A GRASP algorithm for constrained two-dimensional non-guillotine cutting problems
2005
This paper presents a greedy randomized adaptive search procedure (GRASP) for the constrained two-dimensional non-guillotine cutting problem, the problem of cutting the rectangular pieces from a large rectangle so as to maximize the value of the pieces cut. We investigate several strategies for the constructive and improvement phases and several choices for critical search parameters. We perform extensive computational experiments with well-known instances previously reported, first to select the best alternatives and then to compare the efficiency of our algorithm with other procedures.
Tabu search for a multi-objective routing problem
2006
Multi-objective optimization problems deal with the presence of different conflicting objectives. Given that it is not possible to obtain a single solution by optimizing all the objectives simultaneously, a common way to face these problems is to obtain a set of efficient solutions called the non-dominated frontier. In this paper, we address the problem of routing school buses with two objectives: minimize the number of buses, and minimize the longest time a student would have to stay in the bus. The trade-off in this problem is between service level, which is represented by the maximum route length, and operational cost, which is represented by the number of buses in the solution. We prese…
The disclosure paradox: how persuasion knowledge mediates disclosure effects in sponsored media content
2020
Persuasion knowledge is an established construct in the explanation of recipients’ coping with persuasive communication. It gains particular importance when persuasion attempts are covert. This is ...
Research methods in business: Quantitative and qualitative comparative analysis
2020
[EN] Research in the social sciences is built on either quantitative or qualitative analysis, depending on the research context. Using both quantitative and qualitative analyses in the same study presents major obstacles. In the real business world, empirical studies could benefit from using multiple research methodologies. Thus, this editorial presents an overview of the literature on quantitative and qualitative research methods in business research to clarify some key issues on the subject. The following section introduces the papers included in the special issue on "Research Methods in Business: Quantitative and Qualitative Comparative Analysis" and highlights several novel ideas, emerg…
Does size matter? Entrepreneurial orientation and performance in Spanish sports firms
2016
The entrepreneurial orientation (EO) of firms is the subject of current research in the fields of management and business. However, analyses on this subject in sport companies are lacking. This study analyzes the relationship among EO, firm size, and business performance of Spanish sports service firms. The study analyzes EO as a multidimensional construct (with proactiveness, innovation, and risk-taking dimensions), and business performance considering self-perception (perceived customer satisfaction, perceived market effectiveness, and perceived financial performance) and financial indicators (ROI). The firm size follows the EU's directive for the classification of micro, small, medium, a…
The role of consumer innovativeness and perceived risk in online banking usage
2009
PurposeThe purpose of this paper is to analyse how consumer innovativeness can be used as a variable to positively influence internet banking adoption both directly and reducing consumer perceived risk.Design/methodology/approachThe impact of innovativeness and risk on internet banking adoption has been tested through structural equation modelling techniques. The sample consists of 511 Spanish internet banking services users accessed through an internet survey. Risk has been measured as a formative construct.FindingsResults reveals consumer innovativeness as a key construct to improve e‐banking adoption both directly and by its effective role in reducing consumer risk perception of using in…
Identifying the Ideal Types of Online Shoppers : A Qualitative Analysis of Online Shopping
2020
The tremendous increase in online shopping has created a growing demand to understand online shopping behavior. This study contributes to this understanding by identifying ideal types among online shoppers. An ideal type is an analytical construct used to ascertain similarities and deviations to concrete cases in an individual phenomenon. Theoretically, the study draws from different perspectives to create a multifaceted view of online shoppers. The purpose is not to categorize online shoppers under a specific category but rather to help understand different typically occurring online shopping behaviors. Through thematic analysis of the data from 31 participants, this study presents five id…
Organizational learning: Proposal of an integrative scale and research instrument
2014
Abstract This study describes the development and validation of an instrument to measure organizational learning. Starting out from a comprehensive analysis of the main organizational learning models in the specialized literature, the organizational learning scale in this study consists of 18 items forming five dimensions: the ontological levels of learning, modes of knowledge conversion, learning sub-processes, types of learning, and feedback and feed-forward flows of learning. A survey to large Spanish companies provides data from 167 companies. Confirmatory factor analysis tests the construct measurement model and validates the scale. The results of the study indicate that the scale sati…
An empirical analysis of the determinants of price tolerance
2004
In the context of pricing strategies, the notion of price tolerance is an important construct for academic researchers and marketing managers. In this article, a conceptual model of factors influencing the level of price tolerance is proposed and empirically tested with the use of data collected from airline passengers. The results support most propositions of the conceptual model and offer several insights for managerial action and further academic research.