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Forecasting technical debt evolution in software systems:an empirical study

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Frontiers of Computer Science 2023年第3期17卷 63-75页

作者： Lerina AVERSANO mario Luca BERNARDI Marta CIMITILE Martina IAMMARINO Debora MONTANO Department of Engineering University of SannioBenevento 82100Italy Department of Law and Economics Unitelma Sapienza University of RomeRome 00161Italy

Technical debt is considered detrimental to the long-term success of software development,but despite the numerous studies in the literature,there are still many aspects that need to be investigated for a better understanding of *** particular,the main problems that hinder its complete understanding are the absence of a clear definition and a model for its identification,management,and *** on forecasting technical debt,there is a growing notion that preventing technical debt build-up allows you to identify and address the riskiest debt items for the project before they can permanently compromise ***,despite this high relevance,the forecast of technical debt is still little *** this end,this study aims to evaluate whether the quality metrics of a software system can be useful for the correct prediction of the technical ***,the data related to the quality metrics of 8 different open-source software systems were analyzed and supplied as input to multiple machine learning algorithms to perform the prediction of the technical *** addition,several partitions of the initial dataset were evaluated to assess whether prediction performance could be improved by performing a data *** results obtained show good forecasting performance and the proposed document provides a useful approach to understanding the overall phenomenon of technical debt for practical purposes.

关键词： technical debt empirical study software quality metrics machine learning

Ops!... Where is my left main？

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Journal of Geriatric Cardiology 2018年第9期15卷 609-610页

作者： Gianluca Rigatelli mario Lupia Marco Zuin Cardiovascular Diagnosis and Endoluminal hlterventions Unit Rovigo General Hospital Rovigo Italy Vascular Surgery Padua University School of Medicine. Padua Italy Section of Internal and Cardiopuhnonary Medicine Department of Medical Science University of Ferrara Ferrara Italy

Coronary artery anomalies can reach easily nowadays elderly age, causing troubles at both diagnostic and thera- peutic levels. A 80-year-old hypertensive man underwent coronary artery angiography because of a doubtful... 详细信息

关键词： Angiography Left main Right coronary artery

Scale-Free Percolation in Continuum Space

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Communications in Mathematics and Statistics 2019年第3期7卷 269-308页

作者： Philippe Deprez mario V.Wüthrich RiskLab Department of MathematicsETH Zurich8092 ZurichSwitzerland

The study of real-life network modeling has become very popular in recent *** attractive model is the scale-free percolation model on the lattice Zd,d≥1,because it fulfills several stylized facts observed in large real-life *** adopt this model to continuum space which leads to a heterogeneous random-connection model on Rd:Particles are generated by a homogeneous marked Poisson point process on Rd,and the probability of an edge between two particles is determined by their marks and their *** this model we study several properties such as the degree distributions,percolation properties and graph distances.

关键词： Scale-free percolation Continuum percolation Random-connection model Degree distribution Phase transition Graph distance

Pleiotrophin fights Brd2 for neuronal differentiation

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Neural Regeneration Research 2015年第4期10卷 544-546页

作者： Pablo Garcia-Gutierrez mario Garcia-Dominguez Stem Cells Department Andalusian Center for Molecular Biology and Regenerative Medicine (CABIMER) (Consejo Superior de Investigaciones Cientificas (CSIC)Junta de AndalucíaUniversidad de SevillaUniversidad Pablo de Olavide).Av.Americo Vespucio s/n41092 SevilleSpain

Bromodomain containing 2 （Brd2） protein belongs to the Bromodomains and Extra Terminal domain （BET） family of chromatin adaptors characterized by the presence of two N-terminal tandem bromodomains and an exclusive C-terminal extra terminal domain （ET）（Belkina and Denis, 2012; Shi and Vakoc, 2014）. Bromodomains are involved in recognizing acetylated histone tails and other acetylated proteins while the ET domain has been implicated in protein-protein interaction.

关键词： Pleiotrophin fights Brd2 for neuronal differentiation cycle

Endoscopic ultrasound guided fine needle aspiration and useful ancillary methods

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World Journal of Gastroenterology 2014年第39期20卷 14292-14300页

作者： mario Tadic Tajana Stoos-Veic Rajko Kusec Department of Gastroenterology Dubrava University Hospital Zagreb University of Zagreb Faculty of Pharmacy and Biochemistry 10040 Zagreb Croatia Department of Pathology and Cytology Dubrava University Hospital Zagreb 10040 Zagreb Croatia Division of molecular diagnostics and genetics Dubrava University Hospital ZagrebUniversity of ZagrebSchool of Medicine 10040 Zagreb Croatia

The role of endoscopic ultrasound(EUS) in evaluating pancreatic pathology has been well documented from the beginning of its clinical use. High spatial resolution and the close proximity to the evaluated organs within the mediastinum and abdominal cavity allow detection of small focal lesions and precise tissue acquisition from suspected lesions within the reach of this method. Fine needle aspiration(FNA) is considered of additional value to EUS and is performed to obtain tissue diagnosis. Tissue acquisition from suspected lesions for cytological or histological analysis allows, not only the differentiation between malignant and non-malignant lesions, but, in most cases, also the accurate distinction between the various types of malignant lesions. It is well documented that the best results are achieved only if an adequate sample is obtained for further analysis, if the material is processed in an appropriate way, and if adequate ancillary methods are performed. This is a multi-step process and could be quite a challenge in some cases. In this article, we discuss the technical aspects of tissue acquisition by EUS-guided-FNA(EUS-FNA), as well as the role of an on-site cytopathologist, various means of specimen processing, and the selection of the appropriate ancillary method for providing an accurate tissue diagnosis and maximizing the yield of this method. The main goal of this review is to alert endosonographers, not only to the different possibilities of tissue acquisition, namely EUS-FNA, but also to bring to their attention the importance of proper sample processing in the evaluation of various lesions in the gastrointestinal tract and other accessible organs. All aspects of tissue acquisition(needles, suction, use of stylet, complications, etc.) have been well discussed lately. Adequate tissue samples enable comprehensive diagnoses, which answer the main clinical questions, thus enabling targeted therapy.

关键词： Endoscopic ultrasound Endoscopic ultrasound-guided fine needle aspiration Endoscopic ultrasound-guided tissue acquisition Fine needle aspiration cytology Ancillary studies Molecular testing Flow cytometry immunophenotyping

An Architecture for Software Engineering Gamification

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Tsinghua Science and Technology 2020年第6期25卷 776-797页

作者： Oscar Pedreira Felix Garcia mario Piattini Alejandro Cortinas Ana Cerdeira-Pena the Universidade da Coruna Centro de Investigacion CITICLaboratorio de Bases de DatosFacultade de InformaticaElvinaA Coruna15071Spain the Universidad de Castilla-La Mancha Grupo AlarcosEscuela Superior de InformaticaPaseo de la Universidad4Ciudad Real13071Spain.

Gamification has been applied in software engineering to improve quality and results by increasing people’s motivation and engagement.A systematic mapping has identified research gaps in the field,one of them being the difficulty of creating an integrated gamified environment comprising all the tools of an organization,since most existing gamified tools are custom developments or *** this paper,we propose a gamification software architecture that allows us to transform the work environment of a software organization into an integrated gamified environment,i.e.,the organization can maintain its tools,and the rewards obtained by the users for their actions in different tools will mount *** developed a gamification engine based on our proposal,and we carried out a case study in which we applied it in a real software development *** case study shows that the gamification engine has allowed the company to create a gamified workplace by integrating custom-developed tools and off-the-shelf tools such as Redmine,TestLink,or JUnit,with the gamification *** main advantages can be highlighted:(i)our solution allows the organization to maintain its current tools,and(ii)the rewards for actions in any tool accumulate in a centralized gamified environment.

关键词： gamification software engineering gamification architecture gamification engine

The long-term stability of calcium arsenates:Implications for phase transformation and arsenic mobilization

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Journal of Environmental Sciences 2019年第10期31卷 29-41页

作者： Danni Zhang Shaofeng Wang Ying Wang mario A.Gomez Yongfeng Jia Key Laboratory of Pollution Ecology and Environmental Engineering Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China Institute of Environmental Protection Shenyang University of Chemical Technology Shenyang 110142 China

It is well known that calcium arsenates may not be a good choice for arsenic removal and immobilization in hydrometallurgical ***,they are still produced at some plants in the world due to various ***,calcium arsenates can also naturally precipitate under some specific ***,the transformation process of poorly crystalline calcium arsenates(PCCA)and the stability of these samples under atmospheric CO2 are not yet well *** work investigated the transformation process of PCCA produced by using different neutralization reagents(CaO ***)with various Ca/As molar ratios at pH 7-12 in the presence of atmospheric *** aging at room temperature for a period of time,for samples neutralized with NaOH and precipitated at pH 10 and 12,release of arsenic back into the liquid phase *** contrast,for the samples precipitated at pH 8,the aqueous concentration of arsenic was observed to ***,Raman,and SEM results suggested that the formation of various types of crystalline calcium carbonates and/or calcium arsenates controls the arsenic ***,the application of lime may enhance the stability of the generated ***,no matter what neutralization reagent is used,the stability of the generated PCCA is still of concern.

关键词： Arsenic Precipitate Calcium Stability CO2

Local perceptions of climate change and adaptation needs in the Ifugao Rice Terraces (Northern Philippines)

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山地科学学报（英文） 2017年第8期14卷 1455-1472页

作者： mario A.SORIANO Jr. Johanna DIWA Srikantha HERATH Institute for the Advanced Study of Sustainability United Nations University School of Forestry and Environmental Studies Yale University

The Ifugao Rice Terraces in the Philippines is recognized worldwide as a sustainable landscape where humans live in harmony with nature. The success of the Ifugao Rice Terraces largely depends on the attunement of local farmers to their environment and their ability to adapt to perceived changes, as manifested in their complex body of traditional ecological and climatic knowledge. This paper examines the local perceptions on climate change and other challenges to sustainability through focus group discussions with farmers and traditional knowledge holders. Our main findings can be summarized as follows:(i) Ifugao farmers were able to observe climatic changes in recent years, and these changes were intimately linked with broader environmental and socio-cultural changes in the Ifugao social-ecological system;(ii) The climatic changes qualitatively observed by the farmers were in agreement with trends in datasets commonly used in scientific assessments, although this agreement depends on the spatial and temporal resolution of the dataset, and the type of statistical analysis performed, and;(iii) The Ifugaos stressed the importance of traditional knowledge and culture in climate change adaptation, and preferred measures which could increase internal adaptive capacity while addressingbroader sources of community vulnerability. Our results support calls to recognize Indigenous and Western science as equally valid ways of knowing. Discussions with the farmers revealed that in the Ifugao context, climate change may be better framed in the context of multiple stressors on rural livelihoods, with adaptation integrated into broader development objectives. Our findings also emphasize the need for greater engagement of indigenous Ifugao people in planning processes in order to identify adaptation strategies that are culturally appropriate, equitable, and effective in responding to local needs.

关键词： Ifugao Rice Terraces Climate Change Traditional Knowledge Indigenous Adaptation Social-Ecological System Sustainability

i2dash:Creation of Flexible,Interactive,and Web-based Dashboards for Visualization of Omics Data

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Genomics, Proteomics & Bioinformatics 2022年第3期20卷 568-577页

作者： Arsenij Ustjanzew Jens Preussner Mette Bentsen Carsten Kuenne mario Looso Max Planck Institute for Heart and Lung Research Bioinformatics UnitD-61231 Bad NauheimGermany

Data visualization and interactive data exploration are important aspects of illustrating complex concepts and results from analyses of omics data.A suitable visualization has to be intuitive and ***-based dashboards have become popular tools for the arrangement,consolidation,and display of such ***,the combination of automated data processing pipelines handling omics data and dynamically generated,interactive dashboards is poorly ***,we present i2dash,an R package intended to encapsulate functionality for the programmatic creation of customized *** supports interactive and responsive(linked)visualizations across a set of predefined graphical layouts.i2dash addresses the needs of data analysts/software developers for a tool that is compatible and attachable to any R-based analysis pipeline,thereby fostering the separation of data visualization on one hand and data analysis tasks on the other *** addition,the generic design of i2dash enables the development of modular extensions for specific *** a proof of principle,we provide an extension of i2dash optimized for single-cell RNA sequencing analysis,supporting the creation of dashboards for the visualization needs of such *** with these features,i2dash is suitable for extensive use in large-scale sequencing/bioinformatics *** this line,we provide i2dash as a containerized solution,enabling a straightforward large-scale deployment and sharing of dashboards using cloud services.i2dash is freely available via the R package archive CRAN(https://***/package=i2dash).

关键词： Data visualization Dashboard Cloud Data analysis Automation