Marco para la asignación de paquetes de trabajo en entornos de desarrollo global de software

En el ámbito de las tecnologías de la información y las comunicaciones, la externalización por offshoring es una práctica consistente en la distribución de trabajo a centros de producción más allá de las fronteras de un determinado país. Esta práctica, unida al fenómeno de la globalización, ha transformado profundamente los procesos de la ingeniería del software y ha dado lugar a un paradigma denominado GSD (Global Software Development). En este paradigma los ingenieros y los equipos de desarrollo se encuentran geográficamente distribuidos por el planeta y utilizan tecnologías y herramientas colaborativas para la producción del software. Más allá de los aspectos beneficiosos y perjudiciales de este paradigma, del estudio de la literatura relacionada se puede concluir que, para mejorar el rendimiento en proyectos GSD, es necesario contar con herramientas de gestión maduras que tengan en consideración todas las fuerzas presentes en este tipo de proyectos. Una de las actividades iniciales de la gestión de proyectos GSD es la asignación de paquetes de trabajo. Esta actividad tiene un importante impacto en el desarrollo posterior del proyecto y conlleva la toma de decisiones complejas. Por ello, esta tesis doctoral está dirigida a proporcionar a los gestores de proyectos GSD un marco metodológico para la asignación de paquetes de trabajo. La resolución del problema se ha abordado a través de un enfoque multidisciplinar prestando especial atención a aspectos no directamente relacionados con la ingeniería del software, como son la gestión competencial y la gestión de la interculturalidad. La solución planteada proporciona un marco para la asignación de paquetes de trabajo en proyectos GSD, que es adaptable a las peculiaridades de cada organización o proyecto y que proporciona las métricas adecuadas para la evaluación de los factores implicados en dicha asignación. Para el desarrollo de esta tesis se ha definido una metodología de investigación sólida e integral, que ha incluido el análisis sistemático de la literatura relevante y la integración de metodología cuantitativa y cualitativa. La última fase del diseño de investigación consiste en una validación empírica del marco diseñado para verificar la utilidad del mismo. Los datos obtenidos de dicha validación indican que la utilización del marco para la asignación de paquetes de trabajo en entornos GSD contribuye a una mejora en dicho proceso. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------In the area of information technology services and development, offshoring outsourcing is the practice of distributing work to workers outside the national borders of the host country. This practice, together with the globalization phenomenon, has deeply transformed the software engineering processes and has led to a paradigm named GSD (Global Software Development). GSD teams are geographically distributed teams which make use of collaborative technologies and tools to produce software. In addition to the positive and negative aspects of this paradigm, the study of the literature indicates that the success of GSD projects requires mature management tools that take into consideration all the forces interacting within such environments. One of the activities in the initial phases of a GSD project is the allocation of work packages. This activity has a relevant impact in the subsequent development of the project and entails complex decisions. Therefore, this thesis is aimed at the definition of a methodological framework for the allocation of work packages. The resolution of the problem has been approached from a multidisciplinary point of view taking in consideration aspects not belonging to software engineering such as competence paradigm and cultural management. The proposed solution provides a framework to support the allocation of work packages in GSD projects that can be tailored to the concrete situation of each organization or project and that provides the most suitable metrics for the assessment of the different factors involved in the allocation. The development of this thesis has followed a sound and consistent research methodology that has included a systematic literature review and qualitative methods such as nominal group technique and Delphi. In the last phase of the research methodology an empirical validation has been performed to verify the applicability of the framework. The data obtained from the validation indicate that the application of the framework for the allocation of work packages in GSD environments introduces a relevant improvement of the aforementioned process

A qualitative study of hard decision making in managing global software development teams

We empirically explored the implication of hard decisions in the context of the management of global software development (GSD) teams. We hypothesized and empirically tested our belief that hard decision making in conventional development projects is very similar to GSD and differences arise from the nature of the relationship and the ranking of issues. Findings from a Delphi study illustrated our approach and shed some light into the management of GSD teams.Publicad

Competency assessment : integrating COCOMO II and people-CMM for estimation improvement

"Human factor" is one of the most relevant and crucial aspects of software development projects management. Aiming at the performance improvement for software processes in organizations, a new model has been developed to diagnose people related processes. This new model is People-CMM and represents a complementary solution to CMM. On the other hand, existing estimation models in Software Engineering perfectly integrate those aspects related to personnel’s technical and general competence, but fail to integrate competence and performance measurement instruments when it comes to determine the precise value for each of the factors involved in the estimation process. After reviewing the already deployed initiatives and recommendations for competence measurement in the industrial environment and the most relevant estimation methods for personnel factors used in software development projects, this article presents a recommendation for the integration of each of the "human factor" related metrics in COCOMO II with the management tools proposed by People-CMM, which are widely implemented by existing commercial tools.Publicad

Methodological framework for the allocation of work packages in global software development

Global software development in software development industry is a new aspect for many software project managers. In this scenario, the allocation of work packages among project participants is not a simple task. This allocation was traditionally determined by availability and competence but this new trend introduces complexity in an already complex process. Given the need to define new models to guide managers in these operations, this paper presents a framework to allocate work packages among project participants. Apart from the introduction of the framework itself, the results of its implementation are presented. These results show a notable output of the implementation in terms of accuracy of task execution to planning, effect introduction and overall satisfaction. Copyright © 2013 John Wiley & Sons, Ltd

Generic competences for the IT knowledge workers: a study from the field.

Proceedings of: Third World Summit on the Knowledge Society (WSKS 2010), Corfu, Greece, September 22-24, 2010This paper aims to identify generic competency levels relevant to a particular kind of knowledge workers: software engineers. Based on previous works, and in particular in the description of a professional career, authors review of the literature related to the characterization of the labor force in the Software Engineering (SE) domain. Subsequently, using a quantitative analysis based on investigative surveys administered to a number of representative professionals, authors provide with a generic competency ladder adapted to the given career description.Publicad

Finding an Effective Classification Technique to Develop a Software Team Composition Model

Ineffective software team composition has become recognized as a prominent aspect of software project failures. Reports from results extracted from different theoretical personality models have produced contradicting fits, validity challenges, and missing guidance during software development personnel selection. It is also believed that the technique/s used while developing a model can impact the overall results. Thus, this study aims to: 1) discover an effective classification technique to solve the problem, and 2) develop a model for composition of the software development team. The model developed was composed of three predictors: team role, personality types, and gender variables; it also contained one outcome: team performance variable. The techniques used for model development were logistic regression, decision tree, and Rough Sets Theory (RST). Higher prediction accuracy and reduced pattern complexity were the two parameters for selecting the effective technique. Based on the results, the Johnson Algorithm (JA) of RST appeared to be an effective technique for a team composition model. The study has proposed a set of 24 decision rules for finding effective team members. These rules involve gender classification to highlight the appropriate personality profile for software developers. In the end, this study concludes that selecting an appropriate classification technique is one of the most important factors in developing effective models

Choice of the initial antiretroviral treatment for HIV-positive individuals in the era of integrase inhibitors

BACKGROUND: We aimed to describe the most frequently prescribed initial antiretroviral therapy (ART) regimens in recent years in HIV-positive persons in the Cohort of the Spanish HIV/AIDS Research Network (CoRIS) and to investigate factors associated with the choice of each regimen. METHODS: We analyzed initial ART regimens prescribed in adults participating in CoRIS from 2014 to 2017. Only regimens prescribed in >5% of patients were considered. We used multivariable multinomial regression to estimate Relative Risk Ratios (RRRs) for the association between sociodemographic and clinical characteristics and the choice of the initial regimen. RESULTS: Among 2874 participants, abacavir(ABC)/lamivudine(3TC)/dolutegavir(DTG) was the most frequently prescribed regimen (32.1%), followed by tenofovir disoproxil fumarate (TDF)/emtricitabine (FTC)/elvitegravir(EVG)/cobicistat(COBI) (14.9%), TDF/FTC/rilpivirine (RPV) (14.0%), tenofovir alafenamide (TAF)/FTC/EVG/COBI (13.7%), TDF/FTC+DTG (10.0%), TDF/FTC+darunavir/ritonavir or darunavir/cobicistat (bDRV) (9.8%) and TDF/FTC+raltegravir (RAL) (5.6%). Compared with ABC/3TC/DTG, starting TDF/FTC/RPV was less likely in patients with CD4100.000 copies/mL. TDF/FTC+DTG was more frequent in those with CD4100.000 copies/mL. TDF/FTC+RAL and TDF/FTC+bDRV were also more frequent among patients with CD4<200 cells//muL and with transmission categories other than men who have sex with men. Compared with ABC/3TC/DTG, the prescription of other initial ART regimens decreased from 2014-2015 to 2016-2017 with the exception of TDF/FTC+DTG. Differences in the choice of the initial ART regimen were observed by hospitals' location. CONCLUSIONS: The choice of initial ART regimens is consistent with Spanish guidelines' recommendations, but is also clearly influenced by physician's perception based on patient's clinical and sociodemographic variables and by the prescribing hospital location

Dietary α‐Linolenic Acid, Marine ω‐3 Fatty Acids, and Mortality in a Population With High Fish Consumption: Findings From the PREvención con DIeta MEDiterránea (PREDIMED) Study

Background: Epidemiological evidence suggests a cardioprotective role of α‐linolenic acid (ALA), a plant‐derived ω‐3 fatty acid. It is unclear whether ALA is beneficial in a background of high marine ω‐3 fatty acids (long‐chain n‐3 polyunsaturated fatty acids) intake. In persons at high cardiovascular risk from Spain, a country in which fish consumption is customarily high, we investigated whether meeting the International Society for the Study of Fatty Acids and Lipids recommendation for dietary ALA (0.7% of total energy) at baseline was related to all‐cause and cardiovascular disease mortality. We also examined the effect of meeting the society's recommendation for long‐chain n‐3 polyunsaturated fatty acids (≥500 mg/day). Methods and Results: We longitudinally evaluated 7202 participants in the PREvención con DIeta MEDiterránea (PREDIMED) trial. Multivariable‐adjusted Cox regression models were fitted to estimate hazard ratios. ALA intake correlated to walnut consumption (r=0.94). During a 5.9‐y follow‐up, 431 deaths occurred (104 cardiovascular disease, 55 coronary heart disease, 32 sudden cardiac death, 25 stroke). The hazard ratios for meeting ALA recommendation (n=1615, 22.4%) were 0.72 (95% CI 0.56–0.92) for all‐cause mortality and 0.95 (95% CI 0.58–1.57) for fatal cardiovascular disease. The hazard ratios for meeting the recommendation for long‐chain n‐3 polyunsaturated fatty acids (n=5452, 75.7%) were 0.84 (95% CI 0.67–1.05) for all‐cause mortality, 0.61 (95% CI 0.39–0.96) for fatal cardiovascular disease, 0.54 (95% CI 0.29–0.99) for fatal coronary heart disease, and 0.49 (95% CI 0.22–1.01) for sudden cardiac death. The highest reduction in all‐cause mortality occurred in participants meeting both recommendations (hazard ratio 0.63 [95% CI 0.45–0.87]). Conclusions: In participants without prior cardiovascular disease and high fish consumption, dietary ALA, supplied mainly by walnuts and olive oil, relates inversely to all‐cause mortality, whereas protection from cardiac mortality is limited to fish‐derived long‐chain n‐3 polyunsaturated fatty acids. Clinical Trial Registration URL: http://www.Controlled-trials.com/. Unique identifier: ISRCTN35739639

Spatiotemporal Characteristics of the Largest HIV-1 CRF02_AG Outbreak in Spain: Evidence for Onward Transmissions

Background and Aim: The circulating recombinant form 02_AG (CRF02_AG) is the predominant clade among the human immunodeficiency virus type-1 (HIV-1) non-Bs with a prevalence of 5.97% (95% Confidence Interval-CI: 5.41–6.57%) across Spain. Our aim was to estimate the levels of regional clustering for CRF02_AG and the spatiotemporal characteristics of the largest CRF02_AG subepidemic in Spain.Methods: We studied 396 CRF02_AG sequences obtained from HIV-1 diagnosed patients during 2000–2014 from 10 autonomous communities of Spain. Phylogenetic analysis was performed on the 391 CRF02_AG sequences along with all globally sampled CRF02_AG sequences (N = 3,302) as references. Phylodynamic and phylogeographic analysis was performed to the largest CRF02_AG monophyletic cluster by a Bayesian method in BEAST v1.8.0 and by reconstructing ancestral states using the criterion of parsimony in Mesquite v3.4, respectively.Results: The HIV-1 CRF02_AG prevalence differed across Spanish autonomous communities we sampled from (p &lt; 0.001). Phylogenetic analysis revealed that 52.7% of the CRF02_AG sequences formed 56 monophyletic clusters, with a range of 2–79 sequences. The CRF02_AG regional dispersal differed across Spain (p = 0.003), as suggested by monophyletic clustering. For the largest monophyletic cluster (subepidemic) (N = 79), 49.4% of the clustered sequences originated from Madrid, while most sequences (51.9%) had been obtained from men having sex with men (MSM). Molecular clock analysis suggested that the origin (tMRCA) of the CRF02_AG subepidemic was in 2002 (median estimate; 95% Highest Posterior Density-HPD interval: 1999–2004). Additionally, we found significant clustering within the CRF02_AG subepidemic according to the ethnic origin.Conclusion: CRF02_AG has been introduced as a result of multiple introductions in Spain, following regional dispersal in several cases. We showed that CRF02_AG transmissions were mostly due to regional dispersal in Spain. The hot-spot for the largest CRF02_AG regional subepidemic in Spain was in Madrid associated with MSM transmission risk group. The existence of subepidemics suggest that several spillovers occurred from Madrid to other areas. CRF02_AG sequences from Hispanics were clustered in a separate subclade suggesting no linkage between the local and Hispanic subepidemics

A Mobile Framework for Competence Evaluation: Innovation Assessment Using Mobile Information Systems

The environment surrounding organizations is characterized by an increasing necessity of competent personnel but with finite competence level. From the scope of the management of those human resources, one of the most crucial aspects is to be able to measure the competence level of each professional as quickly and precisely as possible. This paper introduces a tool, based on HR-XML standard, to feed competence evaluation with data or evidences that help to fit performance evaluations to the actual performance of the employees. Mobility capabilities in performance evaluation, particularly in the innovation field, involve an inventive contribution to current Competence Management Systems that, due to their lack of flexibility, hinder the full development of the capability to include evidences wherever they may take place, whether it is at work, at client’s office or in a recruitment interview