bluuebunny/crossref_metadata_2025 huggingface dataset:
Identifying consensus and areas for future research in chondrosarcoma
Authors: Jeys Lee M. , Morris Guy V. , Kurisunkal Vineet J. , Botello Eduardo , Boyle Richard A. , Ebeid Walid , Houdek Matthew T. , Puri Ajay , Ruggieri Pietro , Brennan Bernadette , Laitinen Minna K.
Published: February 2025

Aims

The Birmingham Orthopaedic Oncology Meeting (BOOM), held in January 2024, convened 309 delegates from 53 countries to discuss and refine 21 consensus statements on the optimal management of chondrosarcoma.

Methods

With representation from Europe (43%; n = 133), North America (17%; n = 53), South America (16%; n = 49), Asia (13%; n = 40), Australasia (5%; n = 16), the Middle East (4%; n = 12), and Africa (2%; n = 6), the combined experience of treating bone sarcomas among attendees totalled approximately 30,000 cases annually, equivalent to 66 years of experience in the UK alone. The meeting’s process began with the formation of a local organizing committee, regional leads, and a scientific committee comprising representatives from 150 specialist units across 47 countries. Supported by major orthopaedic oncology organizations, the meeting used a modified Delphi process to develop consensus statements through online questionnaires, thematic groupings, narrative reviews, and anonymous pre-meeting polling.

Results

Strong (> 80%) consensus was achieved on 19 out of 21 statements, reflecting agreement among delegates. Key areas of consensus included the role of radiology in diagnosis and surveillance, the management of locally recurrent disease, and the treatment of dedifferentiated chondrosarcoma. Notably, there was agreement that routine chemotherapy has no role in chondrosarcoma treatment, and radiological surveillance is safe for intraosseous chondrosarcomas. Despite the overall consensus, areas of controversy remain, particularly regarding the treatment of atypical cartilage tumours and surgical margins. These unresolved issues underscore the need for further research and collaboration within the orthopaedic oncology community.

Conclusion

BOOM represents the largest global consensus meeting in orthopaedic oncology, providing valuable guidance for clinicians managing chondrosarcoma worldwide. The consensus statements offer a reference for clinical practice, highlight key research priorities, and aim to improve patient outcomes on a global scale.

Cite this article: Bone Joint J 2025;107-B(2):246–252.
Late fracture-related infections in HIV-positive patients
Authors: Graham Simon M. , Masterson Samuel , Laubscher Maritz , Ferreira Nando , Harrison William J. , Simpson A. Hamish R. W. , Maqungo Sithombo
Published: February 2025

Aims

HIV and musculoskeletal injuries both disproportionately affect individuals living in low- and middle-income countries (LMICs), leading to a significant number of fractures in HIV-positive patients. Despite this, little is known about the long-term outcomes for these patients. This prospective cohort study investigated whether HIV infection is associated with fracture-related infections (FRIs).

Methods

All adult patients between September 2017 and December 2018 who received intramedullary nail fixation of lower limb fractures in two tertiary referral hospitals in Cape Town, South Africa, were deemed eligible. In total, 358 participants were recruited for this study, 33 of whom were lost to follow-up. Of the 325 participants, 37 (11.4%) developed a total of 39 FRIs over the study period; 25 were early FRIs (64.1%) and 14 were late FRIs (35.9%). Participants were followed up for a minimum of 24 months. Throughout follow-up, participants were monitored for FRIs. These were categorized as early FRIs (< 90 days) and late FRIs (> 90 days).

Results

Overall, 71 participants (21.8%) were HIV-positive and 254 participants were HIV-negative (78.2%). In the HIV-positive population, 15 participants (21.1%) suffered 16 FRIs: seven early FRIs (9.9%) and nine late FRIs (7.0%). In the HIV-negative population, 22 participants (8.7%) experienced 23 FRIs, 18 were early FRIs (7.1%), and five participants experienced late FRIs (2.0%). On univariate and multivariate regression, being HIV-positive increased a participant’s likelihood of suffering late FRIs, and FRIs overall. HIV status made no significant difference to early FRI rates.

Conclusion

Contrary to recent evidence, this study demonstrates an association between HIV and an increased risk of a patient developing late FRIs. However, there was no significant difference in early FRI rates.

Cite this article: Bone Joint J 2025;107-B(2):221–228.
The impact of acetabular revision in revision total hip arthroplasty for a Vancouver B2 fracture requiring a change of femoral component
Authors: Popa Codrin , Le Baron Marie , Dobelle Émile , Flecher Xavier , Prost Solène , Ollivier Matthieu , Argenson Jean-Noel , Jacquet Christophe
Published: February 2025

Aims

The aim of this study was to assess the necessity of revising the acetabular component in revision total hip arthroplasty (THA) in patients with a Vancouver type B2 periprosthetic femoral fracture (PFF) who require revision of the femoral component. The hypothesis was that revision of both the acetabular and femoral components and using a dual-mobility acetabular component would provide a lower postoperative risk of dislocation, without increasing perioperative morbidity and mortality.

Methods

Data were retrospectively analyzed from a continuously gathered database. We included 150 revisions, performed between January 2015 and December 2022, in 150 patients, with 81 revisions limited to only the femoral component and 69 involving revision of both components. This resulted, after surgery, in 60 patients having a simple-mobility acetabular component and 90 having a dual-mobility component. The mean age of the patients was 79.7 years (SD 10.1), and 98 were female (65.3%). The mean follow-up was 31 months (SD 2.3).

Results

There were no significant differences between those in whom only the femoral component was revised and those in whom both components were revised with the use of a dual-mobility acetabular component for the rate of intraoperative complications, postoperative mortality, blood loss, the requirement of a blood transfusion, medical complications, dislocation (11/81 in the femoral component-only group vs 6/69 in the femoral + acetabular component revision group) or the overall need for reoperation at the final follow-up. Patients were at a significantly higher risk for dislocation when a simple-mobility component was retained (18.3% (n = 11) vs 6.7% (n = 6) for dual-mobility implants; p = 0.036). The revision rate prompted by postoperative instability was significantly higher in patients in whom a simple-mobility acetabular component was retained at revision (10% (n = 6) vs 0%; p = 0.002).

Conclusion

Based on these results, concurrent revision of the acetabular component was not associated with a higher rate of mortality or increased morbidity and patients in whom a dual-mobility acetabular component was used were significantly less prone to dislocation. We thus recommend routine revision of the acetabular component in favour of a dual-mobility component for patients sustaining a Vancouver B2 PFF requiring revision of the femoral component if their initial THA included a simple-mobility acetabular component.

Cite this article: Bone Joint J 2025;107-B(2):164–172.
Deep learning for automated hip fracture detection and classification
Authors: Zheng Zhiqian , Ryu Byeong Y. , Kim Sung E. , Song Dae S. , Kim Seong H. , Park Jung-Wee , Ro Du H.
Published: February 2025

Aims

The aim of this study was to develop and evaluate a deep learning-based model for classification of hip fractures to enhance diagnostic accuracy.

Methods

A retrospective study used 5,168 hip anteroposterior radiographs, with 4,493 radiographs from two institutes (internal dataset) for training and 675 radiographs from another institute for validation. A convolutional neural network (CNN)-based classification model was trained on four types of hip fractures (Displaced, Valgus-impacted, Stable, and Unstable), using DAMO-YOLO for data processing and augmentation. The model’s accuracy, sensitivity, specificity, Intersection over Union (IoU), and Dice coefficient were evaluated. Orthopaedic surgeons’ diagnoses served as the reference standard, with comparisons made before and after artificial intelligence assistance.

Results

The accuracy, sensitivity, specificity, IoU, and Dice coefficients of the model for the four fracture categories in the internal dataset were as follows: Displaced (1.0, 0.79, 1.0, 0.70, 0.82), Valgus-impacted (1.0, 0.80, 1.0, 0.70, 0.82), Stable (0.99, 0.95, 0.99, 0.83, 0.89), and Unstable (1.0, 0.98, 0.99, 0.86, 0.92), respectively. For the external validation dataset, the sensitivity and specificity were as follows: Displaced (0.83, 0.94), Valgus-impacted (0.89, 0.90), Stable (0.88, 0.95), and Unstable (0.85, 0.99), respectively. The overall means (Micro AVG and Macro AVG) for the external dataset were Micro AVG (0.83 (SD 0.05), 0.96 (SD 0.01)) and Macro AVG (0.69 (SD 0.02), 0.95 (SD 0.02)), respectively.

Conclusion

Compared to human diagnosis alone, our study demonstrates that the developed model significantly improves the accuracy of detecting and classifying hip fractures. Our model has shown great potential in assisting clinicians with the accurate diagnosis and classification of hip fractures.

Cite this article: Bone Joint J 2025;107-B(2):213–220.
Facilitating clinical trials in hip fracture in the UK
Authors: Webster James , Goldacre Raphael , Lane Jennifer C. E. , Mafham Marion , Campbell Marion K. , Johansen Antony , Griffin Xavier L.
Published: February 2025

Aims

The aim of this study was to evaluate the suitability, against an accepted international standard, of a linked hip fracture registry and routinely collected administrative dataset in England to embed and deliver randomized controlled trials (RCTs).

Methods

First, a bespoke cohort of individuals sustaining hip fractures between 2011 and 2016 was generated from the National Hip Fracture Database (NHFD) and linked to individual Hospital Episode Statistics (HES) records and mortality data. Second, in order to explore the availability and distribution of outcomes available in linked HES-Office of National Statistics (ONS) data, a more contemporary cohort with incident hip fracture was identified within HES between January 2014 and December 2018. Distributions of the outcomes within the HES-ONS dataset were reported using standard statistical summaries; descriptive characteristics of the NHFD and linked HES-ONS dataset were reported in line with the Clinical Trials Transformation Initiative recommendations for registry-enabled trials.

Results

Case ascertainment of the NHFD likely exceeds 94%. The assessment of the robustness, relevance, and reliability of the datasets was favourable. Outcomes from the HES-ONS dataset were concordant with other contemporaneous prospective cohort studies with bespoke data collection frameworks.

Conclusion

Our findings support the feasibility of the NHFD and HES-ONS to support a registry-embedded, data-enabled RCT.

Cite this article: Bone Joint J 2025;107-B(2):229–238.
Comparison of fore- and midfoot angles using 3DCT in standard weightbearing and sesamoid view position in feet with hallux valgus
Authors: Tripon Martin , Lalevee Matthieu , van Rooij Floris , Agu Chinyelum , Saffarini Mo , Beaudet Philippe
Published: February 2025

Aims

To evaluate how fore- and midfoot coronal plane alignment differs in feet with hallux valgus (HV), using 3DCT when measured in standard weightbearing (SWB) versus sesamoid view (SV) position, and to determine whether first metatarsophalangeal (MTP) dorsiflexion affects the relationship between the first metatarsal (M1) head and the sesamoid bones.

Methods

A consecutive series of 34 feet that underwent 3DCT in SWB and SV positions for symptomatic HV was assessed, of which four feet were excluded for distorted or incomplete images. Two foot and ankle clinicians independently digitized a series of points, and measured a series of angles according to a pre-defined protocol. Measurements include navicular pronation angle, M1 head (Saltzman angle), and metatarsosesamoid rotation angle (MSRA).

Results

The mean age of the 30 patients was 57.5 years (SD 13.4). The mean navicular pronation angle was significantly smaller in the SV position (9.6° (SD 4.4°)) compared to the SWB position (16.4° (SD 5.8°); p < 0.001). There was a difference in MSRA between the SWB and SV positions, revealing an increase in MSRA in 22 patients, while there was a decrease in eight patients. In patients where the MSRA increased, the mean Saltzman angle was 2.5° (SD 5.7°) lower in the SV position versus the SWB position, while in patients where MSRA decreased, the mean Saltzman angle was 3.4° (SD 3.6°) greater in the SV position versus the SWB position.

Conclusion

MTP dorsiflexion causes supination of the navicular, while other first ray parameters remain unchanged, and has a greater influence on the M1 head coronal alignment than on the sesamoids. MTP dorsiflexion induces axial rotations of M1, which vary in direction and magnitude from one patient to another.

Cite this article: Bone Joint Res 2025;14(2):69–76.
Cochrane Corner
Authors: Marson Ben A.
Published: February 2025

In this edition of Cochrane Corner, two updated reviews have been published in the Cochrane database. The first is a very broad review of rehabilitation strategies for patients with ankle fractures and includes early mobilization, the use of removable splints, and physical therapy techniques for patients treated with and without surgery. The second evaluates interventions for fixing tibial plateau fractures, including fixation techniques and bone graft substitutes.
Primary malignant bone and soft-tissue tumours of the spine and appendicular sacrum
Authors: Schneider Eleonora , Tiefenboeck Thomas M. , Böhler Christoph , Noebauer-Huhmann Iris-Melanie , Lang Susanna , Krepler Petra , Funovics Philipp T. , Windhager Reinhard
Published: February 2025

Aims

The aim of the present study was to analyze the oncological and neurological outcome of patients undergoing interdisciplinary treatment for primary malignant bone and soft-tissue tumours of the spine within the last seven decades, and changes over time.

Methods

We retrospectively analyzed our single-centre experience of prospectively collected data by querying our tumour registry (Medical University of Vienna). Therapeutic, pathological, and demographic variables were examined. Descriptive data are reported for the entire cohort. Kaplan-Meier analysis and multivariate Cox regression analysis were applied to evaluate survival rates and the influence of potential risk factors.

Results

A total of 119 consecutive patients (mean age 38 years (SD 37; 1 to 83), mean follow-up 66 months (SD 26; 0 to 505) were investigated. Histological entities included Ewing’s sarcoma (EWS; 33), chondrosarcoma (CSA; 20), osteosarcoma (OSA; 22), and soft-tissue sarcoma (STS; 44). Surgery was performed in 88 patients (74%). Neurological parameters improved in 18 patients (20%) after surgery. Overall, 32 patients (36%) suffered from surgical complications requiring revision. The median survival was 42 months (IQR 10 to 204). The one-, five-, and ten-year survival rates were 73%, 47%, and 39%, respectively. Corresponding five-year survival rates for EWS, CSA, OSA, and STS were 63%, 61%, 40%, and 32%, respectively. The decade of diagnosis, histological entity, surgical intervention, resection margin, and the presence of metastases had significant influence on survival. (Neo-)adjuvant therapies alone had no significant influence on overall survival.

Conclusion

Our study clearly demonstrates the positive impact of improved surgical techniques, as well as refined imaging methods and evolved adjuvant therapy options, on survival rate in all tumour entities. However, despite a multimodal treatment plan, the long-term mortality of these tumours remains high.

Cite this article: Bone Jt Open 2025;6(2):109–118.
February 2025 Imaging Case of the Month: A Wolf in Sheep’s Clothing
Authors:   Mayo Clinic Arizona, Phoenix, AZ USA, Stib Mathew , Gotway Michael
Published: February 2025

No abstract available. Article truncated after 150 words. Clinical History: A 72-year-old man presents to his physician with chest pain. The patient awoke 2 weeks earlier with right-sided chest pain, thought to be the result of a pulled muscle. However, the pain did not remit over the next 2 weeks. The patient also complained of a mild cough productive of white sputum and some mild intermittent shortness of breath improving with albuterol. The patient denied fever.
The patient’s past medical history was remarkable for seasonal allergies, especially dust exposure, treated with fluticasone, and occasional wheezing, treated as needed with an albuterol inhaler. The patient was also diabetic and had hypertension and a history of hypothyroidism. The patient’s past surgical history included right knee total arthroplasty and lithotripsy for renal stones. The patient denied allergies, smoking, and illicit drug use. His medications included fluticasone, albuterol, amlodipine, atorvastatin, ramipril, sitagliptin-metformin, levothyroxine, and probiotics.
The patient’s vital signs included a blood …
An Expert-Based Analysis of ESG Reporting in the context of the Circular Economy
Authors: Menichini Tamara , Salierno Gennaro , Maria Strollo Nicoletta
Published: February 2025

Existing literature has highlighted how Environmental Social Governance (ESG) reporting enables companies to drive their Circular Economy (CE) practices. However, current approaches to ESG reporting do not specifically consider how company activities and decisions about CE contribute to sustainable development. Indeed, CE has a great potential to ensure that companies actively participate in the achievement of the United Nations 2030 Agenda Goals although a more effective way to link CE and sustainability reporting processes is necessary. The present paper recognizes the importance of developing a standardized approach that aligns ESG metrics with CE practices to enhance both transparency and accountability. To this end, taking into consideration the relevance of the GRI guidelines to make the ESG performance of companies more transparent, an expert-based analysis of the importance of GRI topics to capture the ability of CE practices to create circular value is proposed. Creating circular value through CE improves the company’s profitability and resilience while reducing costs for customers, and benefits society and the environment. The use of the fuzzy AHP (F-AHP) method ensures that the relevance of the economic, environmental, and social performance is estimated to make ESG reporting more informative about the company's commitment to a restorative and regenerative business. The findings offer guidelines for using CE reporting information to compare the companies’ contributions to SDGs
 
Keywords: ESG reporting, GRI standards, Circular Economy (CE), Fuzzy Analytic Hierarchy Process (F-AHP), Sustainable Development Goals (SDGs), circular value.
Sustainable Municipal Reform in Ukraine: Theoretical Foundations and European Integration Perspectives
Authors: Kozin Anastasiia , Kozin Serhii , Kovach Denis , Brulevych Volodymyr , Kovach Olena
Published: February 2025

The relevance of the study is determined by the ineffectiveness of the local self-government reform in Ukraine, in particular, the lack of autonomy of local authorities. The purpose of the article is to carry out a comprehensive analysis of the regulatory and legal framework of the activities of local self-government bodies, and the state in the area of local self-government reform. The leading methods of research have become dialectical (when defining the reform itself); general methods of synthesis and analysis (when defining the concepts of "reform", "local self-government bodies", "municipal power", etc.); comparative and legal method (when examining relevant sources, scientific texts, international legislation). It is determined that the problem of local self-government reform is a very urgent problem for Ukrainian society; it is characterized by inadequate legislation, difficult socio-economic situation, and mass ignorance of the population regarding their rights to participate in solving issues of local importance, as well as the forms of exercising such rights. The above is related to improperly conducted work of local authorities with the population. The need to take measures for the effective implementation of local self-government reform in Ukraine based on foreign experience is proven. 
Keywords: state reforms; local self-government reform; reform measures; the right of citizens to local self-government; local councils and executive bodies.
Reinvesting Decisions on Marketing Activities: Leveraging Marketing Data Analytics for Sustainable Business Practices
Authors: Alqutub Kholoud , Zaheer Asma , Salim Mairaj
Published: February 2025

This research explores the pragmatic domain of marketing management. As it explores the antecedents of reinvestment decisions in marketing activities, the importance of data usage satisfaction and marketing data analytics was also felt. To explore marketing data analytics, this research investigated its constituents, such as information quality and technology quality. A sample of 184 marketing managers was utilized, and the data was processed using SPSS 20.0 and Lisrel 10.0. Findings reveal that technology quality had a favorable influence on data usage satisfaction and, finally, on reinvesting decisions among marketing professionals. Moreover, a substantial and positive relationship exists between the quality of information and the level of satisfaction among marketing professionals, which was also observed. There is a favourable association between Data usage satisfaction with reinvesting plans. The findings have very serious and practical implications for the usage of marketing data analytics and decisions to reinvest in certain marketing practices of Big business corporations. The study acts as a cornerstone in this domain. 
Keywords: Quality of Information, Quality of Technology, Marketing managers reinvest decisions, Data usage satisfaction
Strengthening Ecosystems and Biodiversity Conservation in Response To Climate Change In Saudi Arabia
Authors: Toukabri Maher , Chaabi Antar
Published: February 2025

This study aims to assess the impact of climate change on Saudi Arabia’s ecosystems, particularly water scarcity and biodiversity loss. It focuses on evaluating the effectiveness of current adaptation strategies, including innovative water conservation techniques, sustainable agricultural practices, and biodiversity protection efforts.
We employed a qualitative approach using the Delphi method to gather insights from a panel of 12 experts in climate science, biodiversity conservation, and water resource management. The experts evaluated the critical impacts of climate change on the environment and provided recommendations for improving adaptation strategies. Data collected through multiple rounds of expert feedback were analyzed to identify consensus on effective policy reforms and adaptive measures.
The findings suggest that Saudi Arabia must prioritize climate adaptation efforts as part of its Vision 2030 objectives, which aim to strengthen environmental sustainability and economic diversification. The study advocates for policy reforms that promote both ecological preservation and innovative solutions to climate challenges. It also underscores the importance of collaboration between governmental bodies, the private sector, and local communities to effectively address the escalating threats posed by climate change and to safeguard the country’s fragile ecosystems for future generations. 
Keywords: climate change, sustainability, ecosystems, water management, biodiversity
Advancing Sustainable Education: Students' Vocational Fulfillment in Real and Virtual Environments within a Post-Conflict Society
Authors: Stoliarchuk Olesia , Aleksandrova Olena , Binkivska Kristina , Serhieienkova Oksana , Spudka Iryna , Zabolotniuk Volodymyr , Turenko Oleh
Published: February 2025

This paper analyzes the findings of a study on the attitudes and actions of Ukrainian psychology students regarding the awareness and fulfillment of their calling in real and virtual life spaces through the lens of sustainable development and in the context of a post-conflict society. The phenomenon of calling is viewed as a significant personal construct that not only contributes to successful self-actualization and psychological well-being but also establishes a foundation for sustainable professional development. Examining students' perceptions of the term "calling" is crucial as it enables monitoring, psychological support and the development of competencies essential for sustainable professional growth during their education.
An internalized sense of calling is seen as a key to successful professional self-determination in alignment with sustainable development principles, as well as a factor in the effectiveness of further professionalization. It was found that students predominantly perceive calling as an attractive activity that enables them to fulfill their potential while considering social responsibility.
Understanding the meanings and functions of calling among future psychologists is vital in the context of providing psychological assistance to clients dealing with difficulties in professional self-fulfillment, career building, and the development of conscious life strategies, particularly in a post-conflict society. The study also revealed that virtual spaces, particularly social networks, serve as a widespread platform for students to realize their calling by seeking relevant and engaging information, fostering social interaction, and expanding communication networks.
To mitigate the risks and challenges of the virtual space when understanding and fulfilling their calling, respondents employ critical thinking, a high level of self-respect, adherence to basic cybersecurity principles, information hygiene and sustainable development guidelines 
Keywords: calling, self-actualization, sustainable development, post-conflict society, future psychologists, virtual space, social networks
Security Aspects of Implementing the Circular Economy: Advancing Sustainability within the Czech Republic's Strategic Priorities
Authors: Šetek Jaroslav , Alina Jiří , Volek Tomáš
Published: February 2025

The article (prepared by combining an interdisciplinary, multidisciplinary and transdisciplinary approach of interested social sciences with the application of analytical methods) follows the current issues of implementing circular technologies in security contexts using the example of the Czech Republic. It points out the reduction of environmental risks and, at the same time, within the framework of the requirements of diversification and decentralization, draws attention to the possibilities of partially strengthening the energy security of the state through the use of waste as a renewable resource. The established economic policy of the state for the implementation of circular technologies is in line with the calls to fulfil the interrelated environmental, economic and security goals of NATO, the European Union and the Organization for Economic Cooperation and Development.
 
Keywords: circular economy implementation, sustainable development, environmental and energy security, renewable energy sources
Fistulizing and Stricturing Esophageal Crohn's Disease Requiring Esophagectomy
Authors: Dimopoulos-Verma Christina , Ott Ashley , Yeoh Aaron , Barakat Monique , Bingham David , Keyashian Kian , Barber Grant
Published: February 2025

Esophageal Crohn's disease is uncommon and difficult to identify, especially in the adult population. In this study, we report a biologic-naïve patient with colonic Crohn's disease complicated by recurrent esophageal strictures despite many dilations, who presented to our center with recurrent aspiration pneumonia. He was found to have a tracheoesophageal fistula as the likely etiology. After multidisciplinary discussion, he underwent esophagectomy given the severity of his stenosis. The patient's surgical course was complicated by dysphonia and aspiration due to unilateral vocal cord paralysis, which resolved with vocal cord injection. This case highlights a severe manifestation of esophageal Crohn's disease.
COMBINATORIAL RESULTS AND GREEN'S RELATION OF STAR-LIKE FULL TRANSFORMATION SEMIGROUPS
Authors: Ahmadu M. , M. Mogbonju M. , O. Adeniji A.
Published: February 2025

be a distinct non negative integer and star-like full transformation semigroup
be a semigroup of Full Transformation semigroup  of . Let Height of α∗ be  = | Imα∗ |, Fixed point of α∗ be F(α∗) = | {x ∈ X : xα∗ = x} | , Idempotent of α∗ be | F(α∗) |=| Imα∗ | , Collapse of (α∗) be | ∪{tα−1 : t ∈ | and Relapse of (α∗) be |n −((α∗))|, Green’s relation of semigroup  were characterized using the general method and definitions. The methods employed in carrying out this research work were that the elements in each of the functions were listed and some tables were formed for (α∗), J∗(α∗), E | q∗(α∗) | , α∗) , (α∗) , and L , R, D , H and J equivalence relations from these tables, triangular array and sequences were formed; the patterns of the arrangement were studied, formulae were deduced in different cases through the combinatorial principle. The star-like operator | |≤| Kn − λ Kn+1 | was used to generate some tables of results from the star-like element
Self-Determination Pecandu Narkoba yang Sedang Menjalani Masa Rehabilitasi Dikaitkan dengan Abstinence Self-Efficacy
Authors: Purnamasari Ayu , Iswari Rosada Dwi , Juniarly Amalia , Alya Shafa , Putri Windy Adelia
Published: February 2025

The phenomenon of relapse is still widespread. It is show that the recovery of drug patients has less effective effect without the support of motivation to change from that individual. In psychology, the motivation of drug patients to change is generally associated with the term self-determination. This correlational-quantitative study aims to determine whether there is a relationship between self-determination and abstinence self-efficacy on drug addicts undergoing rehabilitation. Respondents in this study are 200 drug addicts undergoing rehabilitation. The sampling technique uses purposive sampling. The measurement instrument used Self-Determination Scale ( = 0,859) and Abstinence Self-Efficacy Scale ( = 0,930). According to the correlation study results, self-determination and abstinence self-efficacy had a significant value of 0,000 (p<0,05) with r = 0,373. It can be concluded that there is a significant positive relationship between the two variables. The individual that had motivation to change (self-determination) will help them to increase their confidence to recover from drug use.
 
Masih maraknya fenomena relapse pada pasien narkoba menunjukkan bahwa pemulihan narkoba kurang efektif tanpa adanya dukungan motivasi berubah dari diri individu itu sendiri. Dalam ilmu psikologi, motivasi pasien pengguna narkoba untuk berubah umumnya dikaitkan dengan istilah self-determination. Penelitian kuantitatif-korelasional ini bertujuan untuk mengetahui apakah terdapat hubungan self-determination dan abstinence self-efficacy pada pecandu narkoba yang sedang menjalani masa rehabilitasi. Partisipan adalah 200 pecandu narkoba yang sedang menjalani masa rehabilitasi yang didapat melalui teknik purposive sampling. Instrumen yang digunakan dalam penelitian ini adalah Skala Self-Determination ( = 0,859) dan Skala Abstinence Self-Efficacy ( = 0,930). Hasil analisis korelasi menunjukkan self-determination dan abstinence self-efficacy memiliki nilai signifikansi sebesar 0,000 (p < 0,05) dengan r = 0,373, sehingga dapat disimpulkan bahwa kedua variabel memiliki hubungan positif yang signifikan. Individu yang memiliki motivasi untuk berubah (self-determination) akan membantunya untuk lebih yakin dengan kemampuannya untuk pulih dari penggunaan narkoba (abstinence self-efficacy).
A novel metric for 6D pose estimation
Authors: Niedermaier Tobias , Berens Felix , Reischl Markus , Elser Stefan
Published: February 2025

Current state-of-the-art evaluation methods for 6D pose estimation have several significant drawbacks. Existing error metrics can produce near-zero errors for poor pose estimations and are heavily dependent on the object point cloud used, resulting in vastly different outcomes for different objects. Furthermore, false detections are not considered at all. Evaluating pose estimators is crucial as it directly impacts the reliability and effectiveness of applications in robotics, augmented reality, and object manipulation tasks. Accurate evaluation ensures that pose estimators can be trusted to perform well in real-world scenarios, leading to better system performance and user satisfaction. In this paper, we conduct experiments to provide insights into how these metrics behave under isolated errors. We also introduce a novel evaluation approach with a metric independent of point clouds, making it applicable to a broader range of use cases than current metrics.
Coordinated operation of pumped hydro energy storage with reversible pump turbine and co-located battery energy storage system
Authors: Tadayon Leon , Meiers Josef , Ibing Lukas , Erdelkamp Kevin , Frey Georg
Published: February 2025

This publication examines the coordinated operation of pumped hydro energy storage and battery energy storage systems to improve profitability. While pumped hydro energy storages offer high storage capacity but have slower response times, battery energy storage systems have lower capacity but faster response times. A hybrid system combining both can thus harness synergies. A mixed-integer linear programming model was developed to depict the coordinated use of both systems in the German market. The proposed approach is also applicable to other regional markets where energy and balancing services are traded in a similar manner. In this model, the pumped hydro energy storage operates in the spot market and provides automatic Frequency Restoration Reserve, while the battery energy storage systems supplies Frequency Containment Reserve. The model takes into account the costs caused by degradation effects in both storage types. The results show a 10.05 % increase in revenue through coordination compared to the independent operation of both storage systems. This added value can be achieved through more efficient use of the power capacity, particularly that of the battery energy storage systems, in coordinated operation.
Modelling of the NAMUR NE 178 “Verification of Request” concept using Pro-Active Asset Administration Shells
Authors: Pakala Harish Kumar , Diedrich Christian
Published: February 2025

The NAMUR automation pyramid is the current state of the art in the process control industry, it is a monolithic structure with a bidirectional flow of information (top-down/bottom-up). Introducing new technologies into this structure would imply modifying or replacing the existing infrastructure. NAMUR NE 175 opens up this closed structure with a new NAMUR Open Architecture (NOA) to provide read-only access to external interfaces without changing the existing structure, safely, securely and reliably. In continuation of NE 175, NE 178 presents a verification of request concept to allow external Monitoring and Optimization applications to have write access to the devices. This paper attempts to model the actors involved in this concept and their interactions using the Pro-Active AAS introduces an interaction protocol and demonstrates the concept using a single water tank case study.
Understanding biofilm--phage interactions in cystic fibrosis patients using mathematical frameworks
Authors: Emerenini Blessing O. , Hartung Doris , Reyes Grimaldo Ricardo N. G. , Canner Claire , Williams Maya , Agyingi Ephraim , Osgood Robert
Published: February 2025

When planktonic bacteria adhere together to a surface, they begin to form biofilms, communities of bacteria. Biofilm formation in a host can be extremely problematic if left untreated, especially since antibiotics can be ineffective in treating the bacteria. Certain lung diseases such as cystic fibrosis can cause the formation of biofilms in the lungs and can be fatal. With antibiotic-resistant bacteria, the use of phage therapy has been introduced as an alternative or an additive to the use of antibiotics to combat biofilm growth. Phage therapy utilizes bacteriophages that attack bacteria, to penetrate and eradicate biofilms. To evaluate the effectiveness of phage therapy against biofilm bacteria, we create a phage-biofilm model with ordinary differential equations and a stochastic model. We considered three possible cases for the stability of disease-free equilibrium; by model simulations and parameter alterations in both models, we investigated the effect of bacteria–phage interactions alongside biofilm bacteria cell detachment from the biofilm phase to the planktonic phase, and how these will affect the efficiency of phage therapy against bacteria. Our results show that, by increasing the phage mortality rate, the biofilm growth can be balanced, which makes it more vulnerable to antibiotics. Thus, phage therapy is an effective aid in biofilm treatment.
Tracing the origins and grammaticalization path of Irish English habitual do V: an analysis of the 1641 Depositions
Authors: Fanego Teresa , Johnston Seamus , Blanco-Suárez Zeltia
Published: February 2025

This article addresses the use of the auxiliary do in affirmative declarative clauses (so-called periphrastic do) during the early stages of the shift from Irish, the Celtic language spoken in Ireland, to English as the more common vernacular language there. A corpus compiled from the digital edition of the 1641 Depositions, a collection of witness testimonies recorded after a rebellion in Ireland, is used to examine the functions of periphrastic do. The focus is on possible habitual uses, since contemporary Irish English allows for the marking of habitual aspect in ways which differ significantly from the marking of habituality in other varieties of English. The data show that a periphrasis consisting of do plus the infinitive of a lexical verb (V) is often used in the 1641 Depositions in combination with markers of duration, yielding a habitual interpretation. It is argued that such uses, whose existence in the superstratal variety, Early Modern British English, has not been established, provided the conditions for the exaptation of do as a dedicated marker of habitual aspect, on the model of the habitual categories found in the verbal system of Irish.
Historische Forschung – Archiv – Verwaltung. Eine zu entdeckende Dreiecksbeziehung als Schicksalsgemeinschaft in digitalen Zeiten
Authors: Schlemmer Martin , Wührer Jakob
Published: February 2025

Aus der Perspektive des öffentlichen Archivwesens richtet der Beitrag einen Blick auf die Dreiecksbeziehung zwischen öffentlicher Verwaltung, öffentlichem Archivwesen und historischer Forschung. Betrachtet wird vornehmlich die Rolle des Archivs in dieser Konstellation, die in Zeiten einer umfassenden digitalen Transformation als Schicksalsgemeinschaft beschrieben wird. Das „Funktionieren“ der Archivierung als gesellschaftlicher Kulturtechnik hängt nicht alleine von den Archiven ab: Aus dem Unterlagenanfall der Verwaltung bildet das Archiv exklusiv die Überlieferung, die der Geschichtswissenschaft zur Interpretation der Vergangenheit zur Verfügung steht. Durch die Digitalisierung als gesamtgesellschaftliche Dynamik sehen die Autoren dieses traditionelle Zusammenspiel zwischen den drei Bereichen auf neue wie besondere Weise herausgefordert: Ausgangspunkt ist die Frage nach den Überlieferungsbedingungen (Rahmenbedingungen) für Unterlagen des „digitalen Zeitalters“, konkret für genuin digitale Überlieferung: Was bleibt vom digitalen Zeitalter an dokumentierter Information – abhängig vom Entstehungskontext in der Verwaltung – erhalten und wie kann diese archivierte Information interpretiert werden? Smart Government, digitale Archivierung und digital humanities verändern die Ausgangsposition jedes dieser drei Bereiche auf eine Weise, die Archivierung letztendlich nicht mehr als von den Archiven allein zu erbringende Eigenleistung gelingen lässt. Für die Sicherstellung einer qualitativ hochwertigen und aussagekräftigen Überlieferungsbildung im digitalen Zeitalter ist es notwendig, dass in allen drei angesprochenen Bereichen eine Reflexion über die jeweilige Rolle im beschriebenen Beziehungsdreieck erfolgt und sich der Austausch untereinander etabliert bzw. intensiviert: Im Zentrum des Dreiecks kann sich so ein „Archivieren-Wollen“ im digitalen Zeitalter manifestieren, dass die genuin digitale Überlieferung nicht von einem fatalen Überlieferungszufall abhängig macht.
On the Interplay Between Boundary Work and Organizational Context
Authors: Hjort-Enemark Emmy , Meier Ninna , Hald Andreas Nielsen
Published: February 2025

There is a growing interest in deepening our understanding of variations in professionals’ boundary work. How healthcare professionals work to change or maintain power and practice domains is embedded in their efforts to collaborate across organizational and professional boundaries. Drawing on a comparative interview study from the Danish eldercare sector, we explore how nurses and care workers in two different organizational contexts articulate their boundary work strategies. Our findings illustrate ways in which organizational context may influence boundary work. In one organizational context, nurses and care workers worked from separate functional units and had limited opportunities for interactions to collaborate and build trust across professional boundaries. This was linked to competitive boundary work strategies. In the other organizational context, nurses and care workers worked together in integrated units, providing opportunities to build trustful relationships and familiarity with each other. This was linked to collaborative boundary work strategies. Furthermore, we found that boundary work was not only influenced by the organizational context but also influenced the organizational context in return. The nurses in the functional units defended and created new boundaries that hindered engagement in collaborative-oriented strategies. Our study contributes by demonstrating how elements of the organizational context can influence boundary work through relational aspects, while boundary work, in turn, can influence the organizational context. This suggests an interplay between organizational context and boundary work that resembles a reciprocal relationship, potentially differing from previous assumptions in the boundary work literature. This interplay may help us better understand variations in professionals’ boundary work.
Aspiring to Success
Authors: Chen Zhenxiang
Published: February 2025

This study explores the social-psychological dimension beyond socioeconomic factors traditionally used to explain the economic reintegration of return rural migrants in China, with particular focus on the role of reference group choice. Studying reintegration is important given its influence on the well-being of the huge number of return migrants and their families and the economic development of their rural home communities. Using logistic and ordinary least squares regression to analyze 2018 data from the Chinese Household Income Project, I find that return rural migrants who compare themselves with urban residents are less likely to work in agriculture, more likely to be self-employed, and more likely to work longer hours. By aligning themselves with urban residents, return rural migrants are inspired toward higher achievement. These findings contribute to our understanding of the economic reintegration of return rural migrants in China and have strong implications for economic development in rural China.
Guna Yala: “el sagrado respeto por la identidad propia” en el contexto del centenario de la Revolución Kuna de 1925
Authors: Vargas-Mena Emilio
Published: February 2025

This is a review of the travel writing book by Carolina Jiménez Acuña, Escape a Kuna Yala, published by the Open University press in San Jose, Costa Rica (Editorial Universidad Estatal a Distancia-EUNED) in the year 2016. The author Jiménez is an art historian, visual artist and writer, who has also advised art projects of indigenous peoples (Naso-Tjërdi, Bribri and Cabecar). The book consists of 126 pages and has the ISBN 978-9968-48-314-8.
Magdalema Camargo Lemieszek (Panamá, 1987)
Authors: Olivas Juan Carlos
Published: February 2025

The poetry of Magdalena Camargo Lemieszek is one of the most important in the region today. Owner of a poetry where dreamscapes converge with the sound of an unavoidably powerful verb, she takes the reader to various spheres of memory, where the human being presents his vulnerability, his primal state, and perhaps returns that dignity lost in the childhood, a topic that is presented in his work, but with twists towards its present state, towards an uncomfortable question about the being, its virtues and its tragic moments. To sum it up in one way, it is a work that is not complacent and leaves no one indifferent.
Recensión del libro “La conjetura de Anita” de Miguel Baraona
Authors: Chaves Murillo Raúl
Published: February 2025

This review addresses critical and descriptive comments of the book La conjetura de Anita (Anita’s Conjecture), a literary work of tales from the Latin American context and its transculturations, by the chilean author Miguel Baraona Cockerell, published by the Editorial de la Universidad Nacional (EUNA) in 2024. The work is made up of eight stories and has been published with ISBN 978-9977-65-856-8.
Habes somnum imaginem mortis: un viaje tanatonáutico con Magda Zavala (2023)
Authors: Arroyo Carvajal Yordan
Published: February 2025

This essay presents an analysis of the construction process of the poetry book Umbral del colibrí. 99 tanatonautas poems (2023) by Costa Rican writer Magda Zavala. To support the theoretical bases, the study is based on ideas, mainly for the modern context, of Hernández, Nieto, Borges, Fernández, among others. It also uses Greco-Latin references from authors such as Parmenides, Thales of Miletus, Pythagoras, Cicero and Lucretius. The philological analysis concentrates on the poems “Renombrando” and “XXXVI”. As part of the results, Zavala starts not only from the cosmic journey or transition, in 2021, of her partner of first youth, the Frenchman Raphaël Souchier, to whom she dedicates her book, but also develops a research process around mysticism, with the purpose of shaping an aesthetic notion around death as a journey, between dimensions of the existing.
La producción audiovisual estatal costarricense, el caso del documental Dos veces mujer (1982): la condición de la mujer en Costa Rica a través del análisis de contenido, discurso e imagen y su recepción en la prensa de Costa Rica de 1982 a 1999
Authors: Jiménez Bonilla Mariana
Published: February 2025

This article corresponds to a content analysis, discourse analysis and image analysis of the film documentary Twice a Woman, (1982) by Patricia Howell, which is part of the state production of the Costa Rican Center for Film Production that was carried out during 1973 to 1987. Likewise, a content analysis is carried out on the written press from 1982 to 1999 to know the relevance it maintained after being released, also to know the reception it had and in which spaces it was projected. This as an effort to know the impact that these state documentaries had (analyzing the case of one) on society, since they were critical of the Costa Rican reality, in addition, this article contributes to be a background to understand the dynamics of state production, its rise and its discontinuation, based on the contents of these audiovisual productions. One image of the documentary will be analyzed, since being an audiovisual production it is relevant to also know the visual part, which complements the discourse that carries the narrative of the film.