Tool for the Semi-automatic Generation of Software for Digital Libraries

[Abstract] The objective of this end-of-degree thesis is to develop a tool that allows generating source code for different applications with features from the domain of Digital Libraries. In order to achieve this goal, it was decided to perform the development of a Software Product Line (SPL) to implement the variability of Digital Libraries applications. To accomplish that, it was necessary, first of all, to perform an exhaustive analysis of the domain in order to define the requirements of the product and the generation tool, and to determine the variance of the SPL. The project began with the aforementioned analysis, which was employed as a basis to decide the most relevant features to our prototype. Thenceforth, the design, development and testing of a complete and functional application including the selected features. Finally, the corresponding variation was added to the code from the application so, among the SPL workframe, different applications can be generated. The last step was to create the application to manage the app generation tool. In the development, PostgreSQL was used for the storage of information, as well as Java, Spring and Hibernate for the implementation of the web server, and Vue.js for the web client. In the case of the software product line, spl-js-engine was used as a derivation engine for product generation, and Vue.js for the web interface designated for the generation tool. The end-of-degree thesis was managed following an iterative and incremental methodology for software development, therefore we split the development process into weekly iterations in each of which a different set of functionalities was carried out.[Resumo] El objetivo de este trabajo de fin de grado es desarrollar una herramienta que permita generar código fuente para diferentes aplicaciones con funcionalidades del dominio de las Bibliotecas Digitales. Para lograr este objetivo, se decidió realizar el desarrollo de una línea de productos de software (LPS) para implementar la variabilidad de las aplicaciones para Bibliotecas Digitales. Para lograr eso, primero fue necesario realizar un análisis exhaustivo del dominio para definir los requisitos del producto y la herramienta de generación, y para determinar la varianza del SPL. El proyecto comenzó con el análisis mencionado previamente, que sirvió de base para decidir las características más relevantes de nuestro prototipo. A continuación, el diseño, desarrollo y prueba de una aplicación completa y funcional que incluye las características seleccionadas. Finalmente, se agregó la variabilidad correspondiente al código desde la aplicación para que, en el marco de la LPS, se puedan generar diferentes aplicaciones. El último paso fue crear la aplicación para administrar la herramienta de generación de aplicaciones. En el desarrollo se empleó PostgreSQL para el almacenamiento de información, así como Java, Spring e Hibernate para la implementación del servidor web y Vue.js para el cliente web. En el caso de la línea de productos de software, se utilizó spl-js-engine como motor de derivación para la generación de productos, y Vue.js para la interfaz web designada a la herramienta de generación. El trabajo de fin de grado se gestionó siguiendo una metodología iterativa e incremental para el desarrollo de software, por lo tanto, dividimos el proceso de desarrollo en iteraciones semanales en cada una de las cuales se llevó a cabo un conjunto diferente de funcionalidades.Traballo fin de grao (UDC.FIC). Enxeñaría informática. Curso 2019/202

Overview of standards related to the occupational risk and safety of nanotechnologies

Nanomaterials offer new technical and commercial opportunities but, due to their low particle size, raise occupational health and safety concerns and may also pose risks to the consumers and the environment. In the last 15 years, many standards have been developed in the area of nanotechnologies, taking into account, namely, occupational risk and safety. This paper presents an overview of the standards in this area, with special emphasis at the ISO level, but also at European level, where standards are considered as an important support for legislation. A brief presentation of five relevant ISO standards is included. Relevant European Standards are also mentioned. The control banding approach for occupational risk management applied to engineered nanomaterials, according to ISO/TS 12901-2:2014, is presented. Standards are essential for society and should, in fact, be considered an important tool for companies to support sustainable products and process innovation

Managing nanomaterials in the workplace by using the control banding approach

Nanomaterials offer new technical and commercial opportunities. However, they may also pose risks to consumers and the environment and raise concerns about occupational health and safety. An overview of the standardization in the area of nanomaterials is presented. Focus is given to the standard ISO/TS 12901-2:2014, which describes the use of a control banding approach for controlling the risks associated with occupational exposures to nano-objects and their aggregates and agglomerates greater than 100 nm. The article also presents a case study on a textile finishing company that implements two chemical finishes containing nanomaterials. A risk analysis was conducted to assess the hazards associated with workers handling nanomaterials. Control banding was applied, and measures such as appropriate ventilation and use of protective equipment are proposed to mitigate risks. In some cases, additional measures, such as a closed booth and smoke extractor, are required. The safety data sheets are a primary source of information on how to handle and care for products containing nanomaterials, but the information provided is still limited in terms of the specific hazards and risks posed by nanomaterials.(undefined

New requirements for surgical gowns as protective clothing for the medical staff and for the patients

The transference of pathogens through body fluids between surgeon team and patient is a frequent cause of infection. The use of protective surgical apparel is essential to create a barrier to microbial transfer. Surgical gowns are protective clothing with a double effect: protection of the clinical staff and protection of the patient. In the market there are two types of surgical protection materials: disposable and reusable, both fulfilling the requirements of EN 13795 2011, which specifies performance requirements and test methods for surgical gowns, drapes and clean air suits. In the present work, new generation textile surgical protection materials have been tested. The materials that have been used for the manufacturing of the gowns were based on trilaminated textiles. These materials allow a multiple use, but are only economically attractive if they can stand a high number of washing/disinfection, drying and sterilizing cycles. Results from the case study show that even after forty reusing cycles, the reusable gowns have still good protection properties. The values in terms of mechanical resistance and water permeability are still much higher than the present requirements of EN 13795. The inquiry made to the medical staff show also a good acceptance of the reusable gowns

Tool for SPARQL Querying over Compact RDF Representations

Presented at the 4th XoveTIC Conference, A Coruña, Spain, 7–8 October 2021.[Abstract] We present an architecture for the efficient storing and querying of large RDF datasets. Our approach seeks to store RDF datasets in very little space while offering complete SPARQL functionality. To achieve this, our proposal was built over HDT, an RDF serialization framework, and its interaction with the Jena query engine. We propose a set of modifications to this framework in order to incorporate a range of space-efficient compact data structures for data storage and access, while using high-level capabilities to answer more complicated SPARQL queries. As a result, our approach provides a standard mechanism for using low-level data structures in complicated query situations requiring SPARQL searches, which are typically not supported by current solutions.This research was funded by Xunta de Galicia/FEDER grant ED431G 2019/01, Xunta de Galicia/FEDER-UE grant IN852A 2018/14; Ministerio de Ciencia, Innovación y Universidades grants [TIN2016-78011-C4-1-R; PID2019-105221RB-C41]; Consellería de Cultura, Educación e Universidade/Consellería de Economía, Empresa e Innovación/GAIN/Xunta de Galicia grant ED431C 2021/53; and by MICINN (PGE/ERDF) grant PID2020-114635RB-I00.Xunta de Galicia; ED431G 2019/01Xunta de Galicia; IN852A 2018/14Xunta de Galicia; ED431C 2021/5

Efficient Database Evolution in Digital Library Reengineering

Cursos e Congresos, C-155[Abstract] With the advancement of internet applications, extensive information systems were created to effectively manage and provide easy access to documents, which coincided with a global initiative to convert physical documents into digital format, making them accessible through the internet. After two decades, these databases are well-structured and organized, although the software used to manage them is gradually becoming outdated. Additionally, once the initial digitization and creation of metadata are completed, it is sensible to enhance the metadata further to provide more detailed information about the documents. In this article we propose a tool to facilitate the evolution of large documentary databasesXunta de Galicia; ED431C 2021/53CITIC is funded by the Xunta de Galicia through the collaboration agreement between the Consellería de Cultura, Educación, Formación Profesional e Universidades and the Galician universities for the reinforcement of the research centres of the Galician University System (CIGUS), and by PRE2021-099351, MCIN/AEI+”FSE+”;GRC[ED431C 2021/53]: GAIN/Xunta de Galicia; TED2021-129245B-C21(PLAGEMIS): MCIN/AEI+”NextGenerationEU“/PRTR; PID2020-114635RB-I00(EXTRACompact): MCIN/AEI; PID2021-122554OB-C33 (OASSIS): MCIN/AEI+EU/ERDF A way of making Europe; PDC2021-120917-C21 (SIGTRANS): MCIN/AEI+“NextGenerationEU”/PRT

Economic analysis of occupational risk prevention : a case study in a textile company

Work accidents affect business and society as a whole. Fewer accidents mean fewer sick leaves, which results in lower costs and less disruption in the production process, with clear advantages for the employer. But workers and their households bear also a significant burden following a work accident, only partially compensated by insurance systems. Furthermore, the consequences of work accidents to the State and Society need also to be considered. When an organization performs an integrated risk analysis in evaluating its Occupational Health and Safety Management System, several steps are suggested to address the identified risk situations. Namely, to avoid risks, a series of preventive measures are identified. The organization should make a detailed analysis of the monetary impact (positive or negative) for the organization of each of the measures considered. Particularly, it is also important to consider the impact of each measure on society, involving an adequate economic cost-benefit analysis. In the present paper, a case study in a textile finishing company is presented. The study concentrates on the dyeing and printing sections. For each of the potential risks, several preventive measures have been identified and the corresponding costs and benefits have been estimated. Subsequently, the Benefit/Cost ratio (B/C) of these measures has been calculated, both in financial terms (from the organisation’s perspective) and in economic terms (including the benefits for the worker and for the Society). Results show that, while the financial analysis in terms of the company does not justify the preventive measures, when the externalities are taken into account, the B/C ratio increases significantly and investments are fully justified

Têxteis cirúrgicos reutilizáveis e seu impacte ambiental

As batas cirúrgicas são essenciais nos blocos operatórios, assumindo uma dupla função: proteger os pacientes das infecções que podem ocorrer durante as intervenções cirúrgicas e proteger a equipa médica para prevenir possíveis infecções do paciente (vestuário de protecção). Os materiais têxteis utilizados no fabrico das batas são tradicionalmente de algodão. No entanto, estes materiais libertam partículas e o seu efeito de barreira é baixo, sobretudo quando se encontram molhados. A normalização europeia neste domínio, relacionada com a obrigatoriedade da marcação CE, vai levar a curto prazo à impossibilidade de utilização das batas de algodão. Existem no mercado materiais têxteis cirúrgicos baseados em não - tecidos, descartáveis, que asseguram uma protecção eficaz. Estes materiais apresentam no entanto um custo elevado e tem um impacte significativo no meio ambiente, dado que são normalmente incinerados após utilização. No presente trabalho foram estudados têxteis cirúrgicos de protecção reutilizáveis de nova geração. Estes materiais são normalmente baseados em materiais compostos laminados, incluindo uma membrana intermediária com micro poros que assegura o efeito barreira aos microorganismos, conferindo ao mesmo tempo algum conforto à equipa médica, dado serem permeáveis ao vapor de água. Estes materiais permitem uma utilização múltipla, mas só se tornam economicamente atractivos se aguentarem um elevado número de ciclos de lavagem/desinfecção, secagem e esterilização. O presente trabalho incluiu testes reais de batas reutilizáveis em bloco operatório, lavandaria hospitalar e esterilização, sendo controlada a evolução das propriedades do material ao longo de várias dezenas de ciclos de reutilização. Foi igualmente avaliada a opinião das equipas cirúrgicas em relação a estes materiais. Foi feita também uma avaliação do impacte ambiental dos têxteis cirúrgicos reutilizáveis relativo aos processos de lavagem/desinfecção, secagem e esterilização. No final do ciclo de vida das batas, é possível a reciclagem do poliéster. Conclui-se que as perspectivas de mercado para os novos materiais são bastante animadoras, dada a futura necessidade de substituição dos materiais à base de algodão que são ainda utilizados na maioria dos hospitais. Prevê-se que uma parte significativa destas batas cirúrgicas possam vir a ser substituídas pelos novos materiais reutilizáveis, aproveitando as infra-estruturas existentes de lavagem e esterilização, com nítidas vantagens quer em termos económicos quer ambientais, permanecendo como é lógico os materiais descartáveis uma alternativa ou complemento para os hospitais.Surgical gowns are essential in surgeries. They have a double function: protect the patients against infections that can occur during surgeries and protect the medical staff in order to prevent possible infections from the patient (protective clothing). The textile materials that are used in the production of gowns are traditionally based on cotton. Nevertheless, these materials produce linting and their barrier effect is quite low when they are wet. The European standardization in this area, related to the compulsory use of the CE mark, will lead shortly to the ban of these materials. In the market there are now surgical protection materials based on non wovens, disposable, that assure an efficient protection. These materials are expensive and have a significant impact on the environment, as they are normally incinerated after use. In the present work, new generation textile surgical protection materials have been studied. These materials are normally based on trilaminated materials, including a membrane with micro pores that assure a barrier effect against microorganisms, with a certain comfort for the medical staff, as they have a certain water vapour permeability. These materials allow a multiple use, but are only economically attractive if they can stand a high number of washing/disinfection, drying and sterilizing cycles. The present work includes real tests with the reusable gowns in the operation theatre, hospital laundry and sterilization, with control of the evolution of the properties of the material during forty reusing cycles. A survey of the opinion of the surgical team about these materials has also been made. The evaluation of the environmental impact of reusable surgical gowns during their life cycle has been made, including the washing/disinfection, drying and sterilizing processes. In terms of the final destination of the gowns, a recycling of the polyester material can be envisaged. The market perspectives for the new materials are very encouraging, due to the future need of replacement of the cotton based materials that are still used in many hospitals. We can foresee that a significant part of these surgical gowns and drapes can be replaced by the new reusable materials, maintaining the existing infrastructures of washing and sterilization, with clear advantages both in economic and in environment terms; the disposables can remain an alternative or complement for the hospitals