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  1. Book ; Online: Advances in Tangible and Embodied Interaction for Virtual and Augmented Reality

    Cardoso, Jorge / Perrotta, André / Silva, Paula Alexandra / Martins, Pedro

    2023  

    Keywords Technology: general issues ; virtual reality ; haptic feedback ; tactile sensation ; sound source localization ; deaf and hard-of-hearing ; visual positioning system ; convolutional neural network ; three-dimensional object pose estimation ; voxel ; perspective-n-point ; digital taste ; galvanic taste stimulation ; taste augmentation ; mulsemedia ; taste modulation ; augmented reality ; PCNL ; simulation ; surgical rehearsal ; surgery ; immersive environment ; cognitive impairment ; physical disability ; unity ; rehabilitation ; intention prediction ; gaze-based interaction ; laparoscopic AR navigation ; liver surgery ; 3D image registration method ; point cloud registration ; collaborative robotics ; acceptability ; uncanny valley ; user experience ; extended reality ; artificial intelligence ; classification ; control ; motor rehabilitation ; prosthesis ; stroke ; surface electromyography signals ; user interface ; pseudo-haptic ; human-centered computing ; mixed and augmented reality ; game-based learning ; fantasy ; situated learning ; serious game ; embodied interaction ; data visualization ; node-link diagram ; immersive communication ; VR conference room ; panoramic live broadcast ; spatial audio ; n/a
    Language English
    Size 1 electronic resource (226 pages)
    Publisher MDPI - Multidisciplinary Digital Publishing Institute
    Publishing place Basel
    Document type Book ; Online
    Note English
    HBZ-ID HT030376707
    ISBN 9783036577548 ; 3036577548
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  2. Book ; Online: A Constituição dos atenienses

    Martins, Pedro Ribeiro

    2013  

    Size 1 electronic resource (122 p.)
    Publisher Coimbra University Press
    Document type Book ; Online
    Note Portuguese ; Open Access
    HBZ-ID HT020102369
    ISBN 9789892605135 ; 9892605136
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  3. Article: History, Nation, and Modernity: The Idea of "Decadência" in Portuguese Medievalist Discourses (1842-1940).

    Martins, Pedro

    Journal of the history of ideas

    2021  Volume 81, Issue 3, Page(s) 451–471

    Abstract: Well-studied in historiography, nineteenth-century debates on Portugal's decadence ("decadência") left a deep and long-lasting impression in this country's historical culture. The idea that Portugal had reached its apogee and was inexorably losing ground ...

    Abstract Well-studied in historiography, nineteenth-century debates on Portugal's decadence ("decadência") left a deep and long-lasting impression in this country's historical culture. The idea that Portugal had reached its apogee and was inexorably losing ground in the concert of other European peoples led its intellectuals to search in the past for elements capable of inspiring a national rebirth. Among the most sought epochs was the Middle Ages, revalued in the context of romantic culture. This article explores how the concept of national decadence was examined in nineteenth- and twentieth-century Portuguese medievalist discourses.
    Language English
    Publishing date 2021-01-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1481685-4
    ISSN 1086-3222 ; 0022-5037
    ISSN (online) 1086-3222
    ISSN 0022-5037
    DOI 10.1353/jhi.2020.0026
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: A review of bioengineering techniques applied to breast tissue: Mechanical properties, tissue engineering and finite element analysis.

    Teixeira, Ana Margarida / Martins, Pedro

    Frontiers in bioengineering and biotechnology

    2023  Volume 11, Page(s) 1161815

    Abstract: Female breast cancer was the most prevalent cancer worldwide in 2020, according to the Global Cancer Observatory. As a prophylactic measure or as a treatment, mastectomy and lumpectomy are often performed at women. Following these surgeries, women ... ...

    Abstract Female breast cancer was the most prevalent cancer worldwide in 2020, according to the Global Cancer Observatory. As a prophylactic measure or as a treatment, mastectomy and lumpectomy are often performed at women. Following these surgeries, women normally do a breast reconstruction to minimize the impact on their physical appearance and, hence, on their mental health, associated with self-image issues. Nowadays, breast reconstruction is based on autologous tissues or implants, which both have disadvantages, such as volume loss over time or capsular contracture, respectively. Tissue engineering and regenerative medicine can bring better solutions and overcome these current limitations. Even though more knowledge needs to be acquired, the combination of biomaterial scaffolds and autologous cells appears to be a promising approach for breast reconstruction. With the growth and improvement of additive manufacturing, three dimensional (3D) printing has been demonstrating a lot of potential to produce complex scaffolds with high resolution. Natural and synthetic materials have been studied in this context and seeded mainly with adipose derived stem cells (ADSCs) since they have a high capability of differentiation. The scaffold must mimic the environment of the extracellular matrix (ECM) of the native tissue, being a structural support for cells to adhere, proliferate and migrate. Hydrogels (e.g., gelatin, alginate, collagen, and fibrin) have been a biomaterial widely studied for this purpose since their matrix resembles the natural ECM of the native tissues. A powerful tool that can be used in parallel with experimental techniques is finite element (FE) modeling, which can aid the measurement of mechanical properties of either breast tissues or scaffolds. FE models may help in the simulation of the whole breast or scaffold under different conditions, predicting what might happen in real life. Therefore, this review gives an overall summary concerning the human breast, specifically its mechanical properties using experimental and FE analysis, and the tissue engineering approaches to regenerate this particular tissue, along with FE models.
    Language English
    Publishing date 2023-04-03
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2719493-0
    ISSN 2296-4185
    ISSN 2296-4185
    DOI 10.3389/fbioe.2023.1161815
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Exo Supportive Devices: Summary of Technical Aspects.

    André, António Diogo / Martins, Pedro

    Bioengineering (Basel, Switzerland)

    2023  Volume 10, Issue 11

    Abstract: Human societies have been trying to mitigate the suffering of individuals with physical impairments, with a special effort in the last century. In the 1950s, a new concept arose, finding similarities between animal exoskeletons, and with the goal of ... ...

    Abstract Human societies have been trying to mitigate the suffering of individuals with physical impairments, with a special effort in the last century. In the 1950s, a new concept arose, finding similarities between animal exoskeletons, and with the goal of medically aiding human movement (for rehabilitation applications). There have been several studies on using exosuits with this purpose in mind. So, the current review offers a critical perspective and a detailed analysis of the steps and key decisions involved in the conception of an exoskeleton. Choices such as design aspects, base materials (structure), actuators (force and motion), energy sources (actuation), and control systems will be discussed, pointing out their advantages and disadvantages. Moreover, examples of exosuits (full-body, upper-body, and lower-body devices) will be presented and described, including their use cases and outcomes. The future of exoskeletons as possible assisted movement solutions will be discussed-pointing to the best options for rehabilitation.
    Language English
    Publishing date 2023-11-17
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2746191-9
    ISSN 2306-5354
    ISSN 2306-5354
    DOI 10.3390/bioengineering10111328
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Book ; Article ; Online: The wage effects of employers' associations

    Martins, Pedro S.

    A case study of the private schools sector

    2022  

    Abstract: Does employers' association (EA) membership affect the wages paid by firms? Such effects could follow from several channels, including increased productivity, different management practices, or employer collusion promoted by EA affiliation. We test these ...

    Abstract Does employers' association (EA) membership affect the wages paid by firms? Such effects could follow from several channels, including increased productivity, different management practices, or employer collusion promoted by EA affiliation. We test these hypotheses drawing on detailed matched employer-employee panel data, including timevarying EA affiliation and worker mobility across firms. We consider the case of private schools in Portugal, 2010-2020, and its EA, and develop a methodology to delimit the sector's scope. We find that, even when controlling extensively for worker characteristics, including worker fixed effects, EA firms pay significantly higher wages. However, when controlling for firm fixed effects, these wage differences are significantly reduced or disappear. Our evidence indicates that the EA wage premium can be largely explained by the selection of high-wage firms (but not high-wage workers) into EA membership.
    Keywords ddc:330 ; J53 ; J62 ; L40 ; Employers organisations ; Worker mobility ; Social dialogue
    Subject code 331
    Language English
    Publisher Essen: Global Labor Organization (GLO)
    Publishing country de
    Document type Book ; Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Efficient activity screening of new glucuronoyl esterases using a pNP-based assay.

    Madsen, Michael S / Martins, Pedro A / Agger, Jane W

    Enzyme and microbial technology

    2024  Volume 178, Page(s) 110444

    Abstract: Glucuronoyl esterases (CE15, EC 3.1.1.117) catalyze the hydrolysis of ester bonds between lignin and carbohydrates in lignocellulose. They are widespread within fungi and bacteria, and are subjects to research interest due to their potential ... ...

    Abstract Glucuronoyl esterases (CE15, EC 3.1.1.117) catalyze the hydrolysis of ester bonds between lignin and carbohydrates in lignocellulose. They are widespread within fungi and bacteria, and are subjects to research interest due to their potential applicability in lignocellulose processing. Identifying new and relevant glucuronoyl esterase candidates is challenging because available model substrates poorly represent the natural substrate, which leads to inefficient screening for the activity. In this study, we demonstrate how fifteen novel, fungal, putative glucuronoyl esterases from family CE15 were expressed and screened for activity towards a commercially available, colorimetric assay based on the methyl-ester of 4-O-methyl-aldotriuronic acid linked to para-nitrophenol (methyl ester-UX-β-pNP) and coupled with the activity of GH67 (α-glucuronidase) and GH43 (β-xylosidase) activity. The assay provides easy means for accurately establishing activity and determining specific activity of glucuronoyl esterases. Out of the fifteen expressed CE15 proteins, seven are active and were purified to determine their specific activity. The seven active enzymes originate from Auricularia subglabra (3 proteins), Ganoderma sinensis (2 proteins) and Neocallimastix californiae (2 proteins). Among the CE15 proteins not active towards the screening substrate (methyl ester-UX-β-pNP) were proteins originating from Schizophyllum commune, Podospora anserina, Trametes versicolor, and Coprinopsis cinerea. It is unexpected that CE15 proteins from such canonical lignocellulose degraders do not have the anticipated activity, and these observations call for deeper investigations.
    Language English
    Publishing date 2024-04-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 423729-8
    ISSN 1879-0909 ; 0141-0229
    ISSN (online) 1879-0909
    ISSN 0141-0229
    DOI 10.1016/j.enzmictec.2024.110444
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

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    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  8. Article ; Online: Malignant tumour in pregnancy: Ewing-like sarcoma of the gluteal region.

    Gouveia, Inês / Xavier, Marta / Silva, Joana / Martins, Pedro

    BMJ case reports

    2024  Volume 17, Issue 4

    Abstract: We report a case of an Ewing-like sarcoma of the gluteal region with ongoing growth during the second trimester of pregnancy and noted during the third trimester. This lesion was consequently studied to infer its malignant potential. Several examinations ...

    Abstract We report a case of an Ewing-like sarcoma of the gluteal region with ongoing growth during the second trimester of pregnancy and noted during the third trimester. This lesion was consequently studied to infer its malignant potential. Several examinations were conducted to characterise this lesion, such as ultrasound and MR, which showed signs of tumourous invasion of the deep tissues of the gluteal region.Given that the pregnancy was at the end of the third trimester, the decision was made to schedule the delivery at 37 weeks of gestation and treat the tumour afterwards to balance maternal and fetal health.This case illustrates the need for a detailed investigation and guidance by a multidisciplinary team to provide prenatal counselling regarding a malignant tumour during pregnancy.
    MeSH term(s) Humans ; Female ; Pregnancy ; Buttocks ; Sarcoma, Ewing/pathology ; Sarcoma, Ewing/diagnosis ; Sarcoma, Ewing/diagnostic imaging ; Sarcoma, Ewing/therapy ; Pregnancy Complications, Neoplastic/diagnosis ; Pregnancy Complications, Neoplastic/pathology ; Pregnancy Complications, Neoplastic/diagnostic imaging ; Adult ; Magnetic Resonance Imaging ; Pregnancy Trimester, Third ; Bone Neoplasms/diagnosis ; Bone Neoplasms/pathology ; Pregnancy Trimester, Second
    Language English
    Publishing date 2024-04-22
    Publishing country England
    Document type Case Reports ; Journal Article
    ISSN 1757-790X
    ISSN (online) 1757-790X
    DOI 10.1136/bcr-2023-257493
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Book ; Article ; Online: Employee Training and Firm Performance

    Martins, Pedro S.

    Evidence from ESF Grant Applications

    2021  

    Abstract: As work changes more quickly, firm-provided training may become more relevant. However, there is little causal evidence about the effects of training on firms. This paper studies a large training grants programme in Portugal, supported by the European ... ...

    Abstract As work changes more quickly, firm-provided training may become more relevant. However, there is little causal evidence about the effects of training on firms. This paper studies a large training grants programme in Portugal, supported by the European Social Fund, contrasting firms that received the grants and firms that also applied but were unsuccessful. Combining several rich data sets, we compare a large number of potential outcomes of these firms, while following them over several years both before and after the grant decision. Our difference-in-differences models estimate significant positive effects on take up (training hours and expenditure), with limited deadweight; and that such additional training led to increased sales, value added, employment, productivity, and exports. These effects tend to be of at least 5% and, in some cases, 10% or more, and are robust in multiple dimensions.
    Keywords ddc:330 ; J24 ; H43 ; M53 ; training subsidies ; productivity ; programme evaluation
    Subject code 331
    Language English
    Publisher Bonn: Institute of Labor Economics (IZA)
    Publishing country de
    Document type Book ; Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article: Do entry wages increase when severance pay drops? Not in recessions

    Martins, Pedro S.

    Economics letters. 2021 Apr., v. 201

    2021  

    Abstract: Severance pay may generate employment effects if wages are rigid. We study this by analysing a reform introduced during a recession that reduced severance pay for new hires while leaving it unchanged for previously-hired employees. We exploit this ... ...

    Abstract Severance pay may generate employment effects if wages are rigid. We study this by analysing a reform introduced during a recession that reduced severance pay for new hires while leaving it unchanged for previously-hired employees. We exploit this grandfathering dimension using a regression-discontinuity approach and long monthly data. We find that entry wages did not increase following the reduction in severance. This suggests that severance adjustments over the business cycle may reduce employment fluctuations.
    Keywords business cycles ; dimensions ; employment ; human resources
    Language English
    Dates of publication 2021-04
    Publishing place Elsevier B.V.
    Document type Article
    ISSN 0165-1765
    DOI 10.1016/j.econlet.2021.109798
    Database NAL-Catalogue (AGRICOLA)

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