Elecciones en SEMNIj

Estimados compañeros:

Como sabéis estamos en proceso de formalizar la Sección de Jóvenes de SEMNI (SEMNIj). Todo ello empezó con la ilusión de dinamizar SEMNI a través de iniciativas enfocadas a los más jóvenes y dotarles de cierta autonomía dentro del seno de SEMNI. Una vez encaminada SEMNIj, el grupo actual a cargo va a dimitir para dar paso a uno nuevo democráticamente elegido. Por ello, en breve, iniciaremos un proceso para escoger Presidente de SEMNIj, la sección de jóvenes de SEMNI. Para ello, los interesados en presentar su candidatura deben enviarnos la siguiente documentación antes del próximo 31 de marzo de 2024:

·         Un video de 60s explicando su candidatura y dándose a conocer.

·         (MAX) 2 páginas A4 con una presentación suya y de lo que querrían hacer.

Una vez recibidas las candidaturas iniciaremos el proceso de renovación con la idea de tener al nuevo presidente elegido antes del próximo congreso de Aveiro. Recordad que los requisitos para presentarse son:

·         Tener menos de 40 años durante el mandato (4 años).
                                                              o
·         Haber defendido su primera tesis doctoral en los últimos 7 años.

Tenéis las bases de la sección e el siguiente link:
https://new.semni.org/wp-content/uploads/sites/25/2023/11/Reglamento-seccion-de-jovenes.pdf

Cualquier duda, no dudéis en contactar a Enrique Nadal ().

Un saludo,

SEMNIj

News from SEMNI’s young investigator section

The young investigator section of SEMNI opens a new chapter in its history. After the CMN 2022 Congress held in Las Palmas de Gran Canaria, a group of young people started working on its reorganisation in order to offer a more active space oriented to the needs of new researchers. In this post we want to share the first advances in this change.

The aim of this renovation is to make a young section with a variety of activities that resonate with the diverse interests of young people in the field of computational mechanics. Our aim in this new phase is to broaden our range of options to provide opportunities that motivate and inspire every member.

In these first steps we have prioritised the definition of our mission and objectives, as well as the updating of our foundations. In addition, it has been given a new name in order to have its own identity: SEMNI_j.

This update has materialised in a renewal of the space of this section on the SEMNI website, where we invite you to browse to learn a little more about the brief history of SEMNI_j, the current management team that is carrying out these first changes, and the regulations.

We want these changes to inspire the new additions, and that little by little we will be building together a strong and inspiring youth section. Therefore, we will soon call for elections to formalise the first official executive of the youth section in a democratic and fair way. Young researchers, promise of the future of this organisation, we are waiting for you!

 Call for Expressions of Interest to organise the 2024 UKACM-SEMNI Autumn School 

Dear UKACM and SEMNI members, 

We are thrilled to announce an exciting opportunity for enthusiastic research groups to organise the 2024 UKACM-SEMNI Autumn School focusing on theoretical aspects of computational mechanics combined with hands-on practical activities. The 2024 UKACM-SEMNI Autumn School aims to foster knowledge exchange, collaboration, and skill development among professionals, researchers, and students in the field. 

This initiative follows the successful organisation of the first UKACM Autumn school in 2023 on Mixed finite element formulations in solid mechanics by the Glasgow Computational Engineering Centre. 

Interested parties are invited to submit an expression of interest (maximum 2 pages) to both the UKACM and SEMNI presidents, outlining: 

  • Their background and expertise in Computational Mechanics. 
  • Their vision and objectives for the proposed Autumn School. 
  • The proposed theme and potential speakers. 
  • The hands-on activities. 

Selected organisers will be responsible for: 

  • Developing a comprehensive online course that aligns with the latest developments in the field. 
  • Inviting and securing commitments from expert speakers and instructors. 
  • Coordinating logistics, including scheduling, platform selection, and technical support. 
  • Promoting the event to ensure broad participation. 
  • Facilitating hands-on and interactive sessions. 

Submission Deadline: 2nd February 2024 

A committee of UKACM and SEMNI executive committee members will evaluate the expressions of interest based on relevance, hands-on activities, and the organisers’ ability to deliver a successful event. Priority will be given to proposals that include teams from both societies. 

The selected organisers will be notified by 23rd February 2024. The Autumn School is expected to be an online event with no registration fee, to be held during the last two weeks of September 2024 and have a duration of 2 to 4 days. 

We believe that this Autumn School will be a catalyst for knowledge-sharing and collaboration between UKACM and SEMNI. We look forward to receiving your expressions of interest and working together to create a meaningful and impactful event. 

Sincerely, 

Rubén Sevilla, UKACM President, Elías Cueto, SEMNI President,  

Convocado el premio Juan C. Simó 2024

La Sociedad Española de Mecánica e iNgeniería computacIonales (SEMNI) convoca el Premio Juan Carlos Simó para jóvenes investigadores correspondiente al año 2024. Este premio se otorga cada año a investigadores en la fase inicial de su carrera investigadora con una trayectoria académica sólida, un historial de publicaciones de calidad significativo y potencial de liderazgo.  La lista de premiados en convocatorias anteriores está disponible en este enlace

Consulte las bases de esta convocatoria aquí.

Convocado el premio a la mejor tesis doctoral defendida en 2023

La Sociedad Española de Mecánica e iNgeniería computacIonales (SEMNI) convoca el Premio SEMNI a la mejor tesis doctoral del año 2023. 

Las bases de esta convocatoria pueden consultarse aquí.

ECCOMAS EYIC Grant

ECCOMAS acaba de crear la nueva ECCOMAS Young Investigator Committee (EYIC) Grant, cuya información os remitimos adjunta por si fuera de vuestro interés:

Dear ECCOMAS Members,

We’re thrilled to announce the opening of the ECCOMAS Young Investigators Committee Grant (EYIC Grant) for 2023/2024. This grant supports young researchers in computational mechanics and applied mathematics.

Key Details:
                • Biennial call, one project funded per cycle.
                • Eligibility: Up to 5 years post-PhD, affiliated with ECCOMAS, active at universities or non-profit institutes.

Funding:
                • 24-month grant, max budget 15,000 EUR.
How to Apply:
Submit by Feb 1 2024 to  with subject «ECCOMAS Young Investigators Committee Grant – 2023/2024.» Details and templates in the attached call and online at https://www.eccomas.org/2023/11/10/the-eccomas-eyic-grant/

Benefits:
                • Independence from PhD advisor.
                • Research group initiation.
                • International visibility boost.

Seize this opportunity to advance your research career.

Best regards,
The ECCOMAS Young Investigators Committee

Workshop AI for Computational Mechanics

The next December 1st, 2023, a one-day workshop on Artificial Intelligence for computational Mechanics will be held at the Universidade da Coruña. For more information and registration, please see:

https://shark-fv.eu/ai4cm/

Foreword. SEMNI newsletter

Dear members of the SEMNI community,


it is a pleasure for me to offer you the first issue of the SEMI newsletter. With biannual periodicity, we intend this newsletter to be a means to bring the activities of our society to the members and sympathizers, both Spanish and international. The newsletter will be written in English, given the large number of sympathisers we have in the IACM community, and the growing number of researchers in training who, with foreign origin, are doing their doctoral thesis in the field of computational mechanics and engineering in our country.


In this first issue, the newsletter includes a summary of the congress on Numerical Methods in Engineering, held in Las Palmas de Gran Canaria in September 2022. The conference was a success and I would like to thank David Greiner and the whole group from the University of Las Palmas de Gran Canaria for their organisational work.

On the other hand, the newsletter includes a summary of the activities carried out by the SEMNI Young Researchers section. Our young people form a very dynamic community and I would like to thank them for all the work done to bring SEMNI closer to our younger members.


Finally, the newsletter includes a contribution from Dr. Iulen Cabeza, the last SEMNI prize winner for the best thesis of 2022. Dr Cabeza’s work deals with the modernisation of the behaviour of the human cornea. I am sure you will enjoy the application of computational mechanics to such a fascinating field.


I hope you enjoy the newsletter. We are open to publish collaborations from our members that serve to bring the activity of our community closer to the rest of our members and supporters. Do not hesitate to send us your contributions.


Best regards and best wishes for a well-deserved rest during the summer holidays, which are just around the corner.

Elías Cueto, president.

About the Congress on Numerical Methods in Engineering CMN-2022

David Greiner Sánchez

The Congress of Numerical Methods in Engineering (CMN-2022) (https://congress.cimne.com/cmn2022/) of the Spanish Society of Computational Mechanics and Computational Engineering (SEMNI) and the Portuguese Association of Theoretical, Applied and Computational Mechanics (APMTAC), was held from September 12 to 14, 2022, at the Palacio de Congresos de Canarias – Alfredo Kraus Auditorium, organized by the Institute of Intelligent Systems and Numerical Applications in Engineering (SIANI) of the University of Las Palmas de Gran Canaria (ULPGC), in collaboration with the Department of Mathematics, the Department of Civil Engineering and the School of Industrial and Civil Engineering (EIIC), of the ULPGC. 

On Monday, September 12 at 2:00 p.m., its inauguration took place in the chamber room, with the presidency of the Rector of ULPGC, Luis Serra Majem, the President of APMTAC, José César de Sá, the President of SEMNI, Elías Cueto, the local representative of APMTAC, Gil Andrade Santos, and the Chairman of the organizing committee, David Greiner.

Inauguration of the Congress of Numerical Methods in Engineering (CMN-2022).

The CMN Congresses of the Spanish society began to be organized by SEMNI (then called Spanish Society of Numerical Methods in Engineering) also in Las Palmas de Gran Canaria (1990), followed by editions in La Coruña (1993), Zaragoza (1996), and Sevilla (1999). Afterwards, the conference follows a joint biennial organization with APMTAC in Madrid (2002), Lisbon (2004), Granada (2005), Porto (2007), Barcelona (2009), Coimbra (2011), Bilbao (2013), Lisbon (2015), Valencia (2017) and Guimarães (2019). This CMN-2022 edition has been held one year later than the initially scheduled date (2021) due to the incidence of the Covid-19 pandemic, this being the first CMN Congress after the change of name of the Spanish Society, although its acronym SEMNI remains the same.

In this congress there were six Plenary Speakers: Karen Willcox (University of Texas at Austin, USA), Antonio Huerta (Polytechnic University of Catalonia, Spain), Carlos Pina (National Laboratory of Civil Engineering LNEC, Portugal), Renato Natal (University of Porto, Portugal), Paulo Flores (University of Minho, Portugal) and Ricardo Vinuesa (KTH Royal Institute of Technology, Sweden); a Session in Tribute to the former president of SEMNI Manuel Casteleiro, and a Session to celebrate the 80th Anniversary of Jacques Periaux (first president of the ECCOMAS society). The participants in the congress were able to present their research papers in twelve proposed thematic sessions and a general program distributed in four parallel sessions, covering the main areas of computational mechanics and computational engineering, with a total of more than 150 contributions accepted after scientific peer review (coming from Spain, Portugal, Italy, Poland, Belgium, France, Luxembourg, Switzerland, Germany, the United Kingdom, Mexico, Chile, the United States, Canada and Australia). The book of proceedings is available on the website of the CMN-2022 congress for download, including both the accepted abstracts and full papers.

(https://congress.cimne.com/cmn2022/Doc/Ebook_CMN_2022.pdf)

In addition, during the CMN-2022, other complementary activities were held, among which the following stand out: a) Science-Chat, on the terrace of the Las Arenas Shopping Center, adjacent to the congress, on Tuesday afternoon; b) Career Forum, during lunch on Wednesday, where Juan José Ródenas, David Pardo, Emilio Martínez-Pañeda and Matteo Giacomini acted as mentors; c) a Tutorial / Short Course of «Introduction to Artificial Intelligence and its application in Computational Fluid Dynamics», taught by Ricardo Vinuesa; d) a round table on «European and National Research Funding: Projects and Human Resources», moderated by Irene Arias, with the participation of Juan Alberto Corbera and Aridane González, respectively, director of research human resources, and director of research and technological development, both attached to the Vicerrectorate for Research and Transfer of the ULPGC, and the success cases of ERC Starting Grants: Marcos Latorre (Polytechnic University of Valencia) and Irene Arias (Polytechnic University of Catalonia); and, e) meetings of the executive committees, and of the annual assemblies of the SEMNI and APMTAC societies. The social program included a visit to the «Casa de Colón» Museum of the Cabildo de Gran Canaria, located in the historic neighborhood of Vegueta, next to Plaza de Santa Ana and the Cathedral of Las Palmas de Gran Canaria, prior to the Congress Gala Dinner. During it, the 2021 and 2022 research prizes of the SEMNI and APMTAC societies were awarded.

Finally, it is necessary to thank everyone, the invited speakers, the members of the organizing committee, scientific committee and local organizing committee, the reviewers of the abstracts and papers, the organizers and chairs of the sessions, the awardees, the speakers and attendees, as well as the technical secretariat of CIMNE congresses, and the staff of the Palacio de Congresos de Canarias – Alfredo Kraus Auditorium, for their participation in this Canarian edition of CMN-2022. In it we lived and enjoyed magnificent days, also accompanied by good weather and atmosphere, both meteorological, scientific and human.

SEMNI 2022 best thesis award: Dr. Iulen Cabeza

A Numerical Exploration of the Crystalline Lens: from Presbyopia to Cataracts and Intraocular Lenses 

Dr. Cabeza-Gil developed various computational methodologies to aid in the treatment of cataracts and enhance our understanding of presbyopia, the two most common eye conditions which are associated with the aging of the crystalline lens.

Presbyopia is a condition that makes it difficult to focus on nearby objects and typically begins around the age of 45, with a prevalence of 100% after the age of 55 1,2. Currently, an estimated 2 billion people worldwide suffer from presbyopia. It is not a medical emergency, but it is a condition that greatly affects people’s quality of life, including reading, computer tasks, etc. On the other hand, cataract surgery is the most frequent surgical procedure performed in developed countries, with 95 million operations annually 3. Cataracts refer to the clouding or loss of transparency of the eye’s natural lens, which is typically replaced during cataract surgery with an artificial intraocular lens.

A better understanding of presbyopia

Dr. Cabeza-Gil developed computational models using the finite element method to better understand the accommodation mechanism (Fig. 1) and conducted ex vivo studies to comprehend the loss of near-focus ability associated with presbyopia. These models, compared with experimental data, allowed the researchers to gain a better understanding of how the crystalline lens changes shape based on its mechanical properties 4,5. For example, the researchers verified that the main cause of presbyopia is the stiffening of the crystalline lens nucleus. They also modeled the active behavior of the ciliary muscle, which is responsible for the accommodative system (Fig. 2).

Fig. 1: Outline of the mechanism of accommodation involving the main elements (lens, zonules and ciliary muscle) in the unaccommodated (left) and accommodated (right) state. The far sight is the unaccommodated state whilst the accommodated state is used to near vision tasks.

The influence of the ciliary muscle on presbyopia is still unresolved. To address this question, Dr. Cabeza-Gil conducted research at the Bascom Palmer Eye Institute (University of Miami, US), where he worked with one of the most powerful groups in the field of presbyopia and obtained more in vivo data about the ciliary muscle. His initial studies suggest that the ciliary muscle continues to function in presbyopic subjects, and that the primary cause of presbyopia is the crystalline lens, as seen in numerical studies. Thanks to the automatic biomedical image segmentation methodologies developed by Dr. Cabeza-Gil in the group 6, large-scale studies could be conducted to determine whether changes resulting from other ocular anatomies, such as the ciliary muscle or sclera, affect presbyopia.

Fig. 2: 3D finite element (FE) model of the accommodative system: lens, zonules, ciliary muscle, iris, sclera and cornea. The arrangement and orientation of the ciliary muscle fibres, longitudinal (yellow), radial (orange) and circumferential (red), is shown on the right.

Towards Personalizing Intraocular Lens Implants in Cataract Surgery 

During cataract surgery, an intraocular lens (IOL) is implanted inside the eye to perform the functions of the healthy crystalline lens. The patient’s final visual quality depends on the implanted optical design and the mechanical stability of the IOL inside the capsular bag (Fig. 3a). Small geometric variations can alter optical quality. Dr. Cabeza-Gil developed various computational methodologies experimentally validated to aid in the IOL design process 7. The IOLs must pass various ISO standards tests, including being compressed between two clamps and measuring their biomechanical markers, which are related to the optical performance. Dr. Cabeza-Gil developed a validated finite element model to perform this test (Fig. 3b), which made IOLs safer and enabled manufacturers to check whether their designs behave correctly. Based on this finite element model data, Dr. Cabeza-Gil developed methodologies based on the method design of experiments and deep learning to customize the haptic design based on a patient’s characteristics 8,9. Therefore, given a patient’s characteristics, the IOL with the best mechanical performance could be implanted within the capsular bag.

During his thesis, Iulen also managed to simulate and compare the behavior of the IOL within the capsular bag with experimental data (Fig. 3c) 10. By combining both models and methodologies, they make a very effective and robust tool to be used in improving the efficiency of cataract surgery. These methodologies could, for example, be combined with clinical efficiency-enhancing tools such as SMARTCataract (Alcon, Switzerland) to further improve this surgery. Currently, these implants do not restore the accommodative ability of the eye, but new implants are being developed that require the use of the precise technology developed during Dr. Cabeza-Gil’s thesis to ensure the effectiveness of the surgery.

We hope that you have enjoyed this newsletter on the research conducted by Dr. Iulen Cabeza Gil and his team. Stay tuned for more updates on this fascinating topic!

Fig. 3: (a) Illustrative image of the IOL inside the eye. (b) simulated IOL during the ISO 11979 test. (c) simulated IOL inside the capsular bag.

References

1.        Berdahl J, Bala C, Dhariwal M, Lemp-Hull J, Thakker D, Jawla S. Patient and Economic Burden of Presbyopia: A Systematic Literature Review. Clinical Ophthalmology. 2020;Volume 14. doi:10.2147/opth.s269597

2.        Fricke TR, Tahhan N, Resnikoff S, et al. Global Prevalence of Presbyopia and Vision Impairment from Uncorrected Presbyopia: Systematic Review, Meta-analysis, and Modelling. Ophthalmology. 2018;125(10). doi:10.1016/j.ophtha.2018.04.013

3.        Liu YC, Wilkins M, Kim T, Malyugin B, Mehta JS. Cataracts. The Lancet. 2017;390(10094). doi:10.1016/S0140-6736(17)30544-5

4.        Cabeza-Gil I, Grasa J, Calvo B. A validated finite element model to reproduce Helmholtz’s theory of accommodation: a powerful tool to investigate presbyopia. Ophthalmic and Physiological Optics. Published online 2021. doi:10.1111/opo.12876

5.        Cabeza-Gil I, Grasa J, Calvo B. A numerical investigation of changes in lens shape during accommodation. Sci Rep. 2021;11(1). doi:10.1038/s41598-021-89145-z

6.        Cabeza-Gil I, Ruggeri M, Chang YC, Calvo B, Manns F. Automated segmentation of the ciliary muscle in OCT images using fully convolutional networks. Biomed Opt Express. 2022;13(5). doi:10.1364/boe.455661

7.        Cabeza-Gil I, Pérez-Gracia J, Remón L, Calvo B. Effect of haptic geometry in C-loop intraocular lenses on optical quality. J Mech Behav Biomed Mater. 2021;114:104165. doi:10.1016/j.jmbbm.2020.104165

8.        Cabeza-Gil I, Ríos-Ruiz I, Calvo B. Customised Selection of the Haptic Design in C-Loop Intraocular Lenses Based on Deep Learning. Ann Biomed Eng. Published online October 2020. doi:10.1007/s10439-020-02636-4

9.        Cabeza-Gil I, Ariza-Gracia MÁ, Remón L, Calvo B. Systematic Study on the Biomechanical Stability of C-Loop Intraocular Lenses: Approach to an Optimal Design of the Haptics. Ann Biomed Eng. 2020;48(4). doi:10.1007/s10439-019-02432-9

10.     Cabeza-Gil I, Calvo B. Predicting the biomechanical stability of IOLs inside the postcataract capsular bag with a finite element model. Comput Methods Programs Biomed. 2022;221:86-94. doi:10.1016/j.cmpb.2022.106