Search results for "Design"

showing 10 items of 5885 documents

SAMPLING DESIGN IN SHARE WAVE 7

2019

This chapter documents the sampling design adopted in SHARE. Starting with a definition of the SHARE target population, we describe the protocol that is followed to harmonise and document the sampling procedure and present the sampling frames used by the countries that recruited a baseline or refreshment sample in Wave 7. We then discuss some important aspects of the SHARE sampling design, such as stratification, clustering, variation in selection probabilities and sample composition. Finally, we provide additional information about the sampling variables included in the released SHARE dataset.

Settore SECS-P/05 - EconometriaSHARE Target population sampling frame sampling design
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Sample design and weighting strategies in SHARE Wave 5

2015

This chapter provides a description of the sampling design and weighting strategies adopted in the fifth wave of SHARE. We begin by defining the target population that SHARE aims to represent. Next, we describe the sampling design focusing on the basic principles guiding the construction of the SHARE sample, the role played by sampling frames for coverage of the target population, and other important aspects of sampling - such as stratification, clustering and variation in selection probabilities - that affect the efficiency of sample-based inference. The chapter concludes with a description of the weighting strategies adopted by SHARE to handle problems of unit nonresponse in the baseline …

Settore SECS-P/05 - EconometriaSHARE sampling design weighting strategies
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Understanding the Microfoundations of Entrepreneurial Ecosystems: Toward a Value-Based Method and Theory

2023

Despite the progress made by scholars, empirically investigating entrepreneurial ecosystems (EEs) remains problematic because of the inherent complexities and nonlinearities of interactions among EE actors. The research to date has shown a tendency to focus on macrolevel ecosystem dynamics while neglecting the microfoundations of EEs. We contend that this negligence is due to a lack of appropriate methodologies that can capture EE microfoundations through a systemic value-based perspective. To fill this gap, in this article, we propose a novel methodological approach, the value system method, which enables framing EEs through critical causal interdependences between key actors’ business mod…

Settore SECS-P/07 - Economia AziendaleBusiness model entrepreneurial ecosystem (EE) microfoundations systems design value capture value creationStrategy and ManagementElectrical and Electronic EngineeringIEEE Transactions on Engineering Management
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MANAGING LEVERS OF ORGANIZATION DESIGN TO ENHANCE SMES’ LONGEVITY: An Agenda for Further Research

2012

SME success is often primarily linked to the personal traits of entrepreneurs and vice versa. In terms of SME failure, most of the literature, research and popular press, seems focused on individual factors, such as those related to the owner/entrepreneur’s profile and behavior, or contextual factors like those associated with relationships between the firm and its own stakeholders, especially on the competitive and financial systems arenas. That said, some scholars have emphasized the relevance of organizational design for SME longevity, though there seems to be little inter-relating of the two sides. This paper examines the relationships between owner/entrepreneur attributes and organizat…

Settore SECS-P/07 - Economia AziendaleLongevityOrganizational DesignFailureSmall BusineSystem Dynamics
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Design and analysis of discrete choice experiments for models with response time

2013

Settore SECS-S/02 - Statistica Per La Ricerca Sperimentale E TecnologicaA sector of conjoint analysis (experimental design in marketing research) is made of the so called choice experiments. In choice experiments respondents undergo a questionnaire which is nowadays mostly submitted through the internet. The questionnaire proposes to the respondent a sequence of choice sets each one including two or more profiles being a profile a specific combination of attribute levels. The respondent selects the preferred profile for each choice set. Responses given by a sample of respondents are analysed through suitable methods aimed to eventually find the best combination of attribute levels. One method of analysis adopts the Multinomial Logit (MLN) model. In this article the authors show the results of the MLN analysis compared with another model of analysis which uses an additional response which can be easily recorded by electronically submitted questionnaires. In practice modern survey platforms like “Qualtrics” (the one used for this work) can record the so called “response latency” i.e. the time taken by the respondent to make the choice and select the most preferred profile in the choice set. Thanks to a response latency model further refined in this work it is possible to deduce the relative weight of importance of the profiles for each choice set and respondent. This type of response can be used in place of the dichotomous choice variable in the MLN model. The two models and methods of analysis are deeply compared and it is critically discussed when it is better to use one or the other method. As a result a more reliable estimate of the optimal profile comes up implying lower risks for new investments and marketing decisions.
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Prioritization of the balancing property and full estimability in mixed-level designs

2008

In a recently published work, a new class of Balanced Asymmetrical Nearly Orthogonal Designs (BANOD2) was proposed, which can simultaneously estimate both first and second order effects of all factors, with a limited run size. The motivation for the new class lies in using the balancing property as a necessary precondition for several practical concerns arising in the experimentation field. A balanced design optimizes the use of experimental resources in technological experiments, may avoid misinterpretations in choice experiments of marketing research, and can relieve the experimenter from the arbitrariness in assigning the levels to factors. Furthermore the balancing property assures the …

Settore SECS-S/02 - Statistica Per La Ricerca Sperimentale E TecnologicaDesign of ExperimentBalanced designOptimal Design
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Computer experiments combined with physical Experiments: two experiences in product development

2012

Physical experiments in industrial product development are often very expensive but also necessary sometimes even for safety reasons (think about the crash tests in the automotive industry conducted with new and completely equipped vehicles). Therefore there is a pressing need to reduce this cost as much as possible. Computer experiments may be a viable solution provided that their results are reliable as much as the physical ones. In most of the cases, computer experiments are opportunely combined with physical experiments and the recipe of such mix is interesting itself. In this presentation we will show two cases of combination of physical and computer experiments in product development.…

Settore SECS-S/02 - Statistica Per La Ricerca Sperimentale E TecnologicaDesign of ExperimentSettore SECS-S/01 - StatisticaComputer Experiments
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Robust Product Development Using Variation Mode and Effect Analysis

2009

This is a book chapter. No abstract is present.

Settore SECS-S/02 - Statistica Per La Ricerca Sperimentale E TecnologicaRobust Design Variation Mode and Effect Analysis (VMEA)FMEA
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A Proposal to estimate the roaming–dog Total in an urban area through a PPSWOR spatial sampling with sample size greater than two

2018

Settore SECS-S/05 - Statistica SocialeDogs roaming in urban areas constitute an issue for public order hygiene and health. Proper planning of actions for health and security control and allocation of financial funds require the knowledge of the roaming–dog–population size in a given urban area. Unfortunately a reliable statistical procedure aimed to measure such population is not available yet in literature. This paper presents a simple reproducible survey sampling procedure to estimate the number of roaming dogs in an urban area through the description of a real study carried out on a restricted area of the city of Palermo in southern Italy. A sample of areas is drawn by means of a drawn–by–drawn spatial sampling with probabilities proportional to size and without replacement (PPSWOR). As inclusion probabilities are not available in closed form they are estimated by Monte Carlo approach which is of simple implementation and permits design–based variance estimation even when first–order inclusion probabilities are unknown.
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Sostenibilità e design: la sfida del food packaging

2011

L’environmental design, ossia il design ambientalista o “verde” si preoccupa soprattutto di limitare i rifiuti prodotti dalla nostra società e di ridurre il consumo di energia e materiali a livelli sostenibili.

Settore SPS/08 - Sociologia Dei Processi Culturali E ComunicativiSettore SPS/10 - Sociologia Dell'Ambiente E Del TerritorioSettore SPS/07 - Sociologia Generaledesign rifiuti sostenibilità
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