bluuebunny/crossref_metadata_2025 huggingface dataset:
MiniMovers: An Initial Pilot and Feasibility Study to Investigate the Impact of a Mobile Application on Children’s Motor Skills and Parent Support for Physical Development
Authors: Zhang Yajie , Wainwright Nalda , Goodway Jacqueline D. , John Amanda , Stevenson Anna , Thomas Kirsty , Jenkins Sean , Layas Fatma , Piper Kate
Published: January 2024

The MiniMovers (MM) APP combines motor development theory with creativity expertise and has been designed to provide parents with developmentally appropriate activities to support children’s motor skills. This study investigates how MiniMovers activities enabled parents to support their children’s physical development. Families participated in an 8-week MM programme of activities from the MM APP (Mini, Mighty and Mega levels), with pre- and post-intervention data collected using multiple tools (e.g., motion capture system, force plate, eye-tracking glasses, and videos). Mixed research methods were applied among children (N = 8; aged 21–79 months) and their parents, providing quantitative analysis on children’s performance (running, throwing, jumping, kicking, balancing and catching), as well as qualitative analysis on parents’ attitude and behaviour (two-weekly feedback surveys and interviews). Lab-based measures showed significant improvements in run time, underarm throwing distance, and horizontal jump distance. Test of Gross Motor Development-3 showed a significant gain in running, underarm and overarm throwing, horizontal jump and kicking. Further, developmental stages indicated significant improvements in running, kicking and catching. Parents reported increased enjoyment and knowledge, children’s enjoyment, independence and confidence. This pilot study provides support for the research and development of the MM App and suggests more research into the use of APPs to support home activities among families with young children.
Structured Program for Developing the Psychomotor Skills of Institutionalized Children with Special Educational Needs
Authors: Roșu Daniel , Cojanu Florin , Vișan Paul-Florinel , Samarescu Nicoleta , Ene Mariana Augustina , Muntean Raul-Ioan , Ursu Vasile Emil
Published: January 2024

Tailoring motor activities to the unique needs of children with special educational requirements has shown considerable efficacy. Our study aimed to develop a structured program specifically designed to enhance psychomotor abilities, focusing on balance and motor–cognitive skills among 28 students (aged 12–14) from two institutional centers in Romania. The program spanned 36 weeks, with biweekly 30 min sessions. Psychomotor skills were assessed through tests measuring balance, speed of movements, and upper limb motor laterality. Initial and final data were collected for evaluation. A statistical analysis, employing the Kolmogorov–Smirnov and Wilcoxon Z tests, compared the assessments. The results indicated significant improvements in movement speed, with a notable increase in stimulus identification (averaging from approximately 13 to 14) (p < 0.05) and reduced processing time (decreasing from about 28.7 to 28 s) (p < 0.05). However, while the structured program demonstrated substantial enhancements in specific motor and cognitive–motor skills, it did not yield significant changes in dynamic balance, maintaining values close to 0.9 (p > 0.05) for open-eyed balance and 0.88 (p > 0.05) for closed-eyed balance. Additionally, an analysis of the processing speed in pulses per second showcased a marginal decline, from approximately 0.46 to 0.45, revealing notable disparities between the initial and final measurements (p < 0.05).
Modeling the Health Impact and Cost-Effectiveness of a Combined Schoolgirl HPV Vaccination and Cervical Cancer Screening Program in Guangdong Province, China
Authors: Huang Yating , Zhang Dantao , Yin Lihua , Zhao Jianguo , Li Zhifeng , Lu Jing , Zhang Xiaoming , Wu Chenggang , Wu Wei
Published: January 2024

Low human papillomavirus (HPV) vaccine uptake is a key barrier to cervical cancer elimination. We aimed to evaluate the health impact and cost-effectiveness of introducing different HPV vaccines into immunization programs and scaling up the screening program in Guangdong. We used a dynamic compartmental model to estimate the impact of intervention strategies during 2023–2100. We implemented the incremental cost-effectiveness ratio (ICER) in costs per averted disability-adjusted life year (DALY) as an indicator to assess the effectiveness of the intervention. We used an age-standardized incidence of 4 cases per 100,000 women as the threshold for the elimination of cervical cancer. Compared with the status quo, scaling up cervical cancer screening coverage alone would prevent 215,000 (95% CI: 205,000 to 227,000) cervical cancer cases and 49,000 (95% CI: 48,000 to 52,000) deaths during 2023–2100. If the coverage of vaccination reached 90%, domestic two-dose 2vHPV vaccination would be more cost-effective than single-dose and two-dose 9vHPV vaccination. If Guangdong introduced domestic two-dose 2vHPV vaccination at 90% coverage for schoolgirls from 2023 and increased the screening coverage, cervical cancer would be eliminated by 2049 (95% CI 2047 to 2051). Introducing two doses of domestic 2vHPV vaccination for schoolgirls and expanding cervical cancer screening is estimated to be highly cost-effective to accelerate the elimination of cervical cancer in Guangdong.
The Role of Systemic Family Psychotherapy in Glycemic Control for Children with Type 1 Diabetes
Authors: Salcudean Andreea , Lica Maria Melania
Published: January 2024

(1) Background: Family factors play an important role in the management of diabetes, establishing a relationship between conflicts and non-adherence to therapy. High values of HbA1c are involved in specific complications of the disease (retinopathy, nephropathy, neuropathy, ketoacidosis). This study aimed to determine the role of systemic family psychotherapeutic interventions in increasing the quality of parent–child/adolescent relationships and in optimizing the child’s glycemic control. (2) Methods: In this prospective observational study, 64 parents of children and adolescents with type 1 diabetes were evaluated regarding their relationship with their children, using the Child–Parent Relationship Scale-Short Form (CPRS-short form). The children were divided into three groups: one participated for 6 months in systemic family psychotherapy with children and their parents (FT), the second group participated in individual psychotherapy (IT), and the control group (CG) received no intervention. HbA1c values were recorded before and after the interventions. (3) Results: HbA1c means decreased significantly after the family psychotherapy program. The scores on closeness in the family therapy group increased significantly, and the scores on conflict decreased significantly after the intervention, compared with IT and CG. (4) Conclusions: Systemic family psychotherapy produces better results in disease management and in strengthening parent–child relationships.
Patient-Specific Surgical Correction of Adolescent Idiopathic Scoliosis: A Systematic Review
Authors: Solla Federico , Ilharreborde Brice , Clément Jean-Luc , Rose Emma O. , Monticone Marco , Bertoncelli Carlo M. , Rampal Virginie
Published: January 2024

The restoration of sagittal alignment is fundamental to the surgical correction of adolescent idiopathic scoliosis (AIS). Despite established techniques, some patients present with inadequate postoperative thoracic kyphosis (TK), which may increase the risk of proximal junctional kyphosis (PJK) and imbalance. There is a lack of knowledge concerning the effectiveness of patient-specific rods (PSR) with measured sagittal curves in achieving a TK similar to that planned in AIS surgery, the factors influencing this congruence, and the incidence of PJK after PSR use. This is a systematic review of all types of studies reporting on the PSR surgical correction of AIS, including research articles, proceedings, and gray literature between 2013 and December 2023. From the 28,459 titles identified in the literature search, 81 were assessed for full-text reading, and 7 studies were selected. These included six cohort studies and a comparative study versus standard rods, six monocentric and one multicentric, three prospective and four retrospective studies, all with a scientific evidence level of 4 or 3. They reported a combined total of 355 AIS patients treated with PSR. The minimum follow-up was between 4 and 24 months. These studies all reported a good match between predicted and achieved TK, with the main difference ranging from 0 to 5 degrees, p > 0.05, despite the variability in surgical techniques and the rods’ properties. There was no proximal junctional kyphosis, whereas the current rate from the literature is between 15 and 46% with standard rods. There are no specific complications related to PSR. The exact role of the type of implants is still unknown. The preliminary results are, therefore, encouraging and support the use of PSR in AIS surgery.
High-Temperature Heat Treatment of Plasma Sprayed Ti–Si–C–Mo Coatings
Authors: He Jining , Liu Jialin , Zhao Hongjian , Qin Yanfang , Fan Jiawei
Published: January 2024

In this work, the effect of 800 °C and 1100 °C post-heat treatment on the plasma spraying of Ti–Si–C–xMo (x = 1.0, 1.5) composite coatings was investigated. The composite coatings were composed of TiC, Ti3SiC2, Ti5Si3 and Mo5Si3 reacted phases. After heat treatment, the Ti3SiC2 and Mo5Si3 phases increased. The coating microhardness decreased by 16% and 18% for Ti–Si–C–1.0Mo and Ti–Si–C–1.5Mo coatings, respectively, after heat treatment at 1100 °C. Fracture toughness increased by 16% for the Ti–Si–C–1.5Mo coating after heat treatment at 1100 °C, which was mainly due to the heat treatment promoting Ti3SiC2 formation, healing micro-cracks, reducing the internal stress and making the microstructure dense. The coating friction coefficient before and after heat -treatment was between 0.4 and 0.6. After heat treatment, the wear amount of the coating was first reduced and then increased, and the minimum wear loss occurred after heat treatment at 800 °C. The wear mechanism was mixed abrasive wear, adhesive wear and tribo-oxidation wear.
The Design and Preparation of Permittivity-Adjustable FeNi@SrFe-MOF Composite Powders
Authors: Yuan Zhifen , Jiang Donghan , Chen Lei , Zhu Zhenghou
Published: January 2024

When the thickness of the wave-absorbing material is low, there exists the problem of the narrow wave-absorbing frequency band, making it difficult to regulate the position of the wave-absorbing peak. In this study, FeNi@SrFe-MOF composite powders were synthesized using a hydrothermal method and a liquid-phase reduction method. The composite powder was spherical, with a particle size of about 50 μm–60 μm; the core layers of the powders were porous SrFe-MOF powders with permanent magnetization, and the outer layers were FeNi alloy nano-powder coatings with a particle size of 100 nm–120 nm, which took into account both the soft magnetization and the permanent magnetization properties of the composite powders. Additionally, a directional magnetic field was applied to the powder coating. By regulating the intensity and direction of the magnetic field, the electromagnetic parameters of the composite powder coating underwent sensitive changes, allowing for the precise regulation of the electromagnetic wave absorption performance of the composite powders. With the increase in magnetic field intensity, the ε′ value decreased significantly. The ε′ values were 8.56–7.35 for H453mT and 6.73–6.12 for H472mT. When no magnetic field was applied, the Snoke limit frequency of the μ′ value was 6.0 GHz. When the magnetic field intensity increased, the Snoke limit frequency of the μ′ value increased from 6.0 GHz, without the magnetic field, to 8.3 GHz; the Snoke limit of the composite powders was shattered. After the H453mT magnetic field regulation treatment, the powder coating exhibited good impedance matching characteristics with air. When the magnetic field intensity was 453mT and the thickness of the composite powders coating was 3.5 mm, the composite powders coating showed the strongest absorption peak when the R-value was −59 dB at 7.8 GHz, and the effective absorption bandwidth reached 3.2 GHz, exhibiting superb absorbent qualities. The wave absorption property of the coating can be sensitively changed by the magnetic field regulation treatment at the condition without changing the powder structure or coating structure, which provides a new strategy for the regulation of the wave absorption property and has broad application prospects.
The Effect of a Coating on the Crystallization of Multicomponent Co-Based Amorphous Alloys
Authors: Abrosimova Galina , Chirkova Valentina , Volkov Nikita , Straumal Boris , Aronin Alexandr
Published: January 2024

The effect of protective coatings on the crystallization of amorphous Co-based alloys was studied using the methods of X-ray diffraction, differential scanning calorimetry, and transmission electron microscopy. The crystallization of the amorphous alloys was studied on as-prepared samples, deformed samples, and deformed samples with a protective coating. After heat treatment, the fraction of the crystalline phase in the pre-deformed samples was higher than in the undeformed samples. When using a protective coating, the fraction of nanocrystals formed during heat treatment increased. The size of the crystals formed in deformed samples was smaller, and in the deformed samples with a protective coating, they were slightly larger than in the corresponding initial samples. The reasons for the differences in the formed structure in the amorphous alloys under study are discussed in terms of free volume.
Dermatological Changes during Menopause and HRT: What to Expect?
Authors: Bravo Bruna , Penedo Lais , Carvalho Raquel , Dal Vesco Carolina , Calomeni Mariana , Gapanowicz Debora , Kemen Elaine , Paes Raphaela , Renke Guilherme
Published: January 2024

Menopause marks the end of a woman’s reproductive life. It is well-known that skin aging is accelerated during this period, as declining estrogen detrimentally impacts the skin’s extracellular matrix (ECM) which is the provider of strength and elasticity. Menopause also affects scalp hair, reducing hair diameter and leading to shorter hair growth. Objective: To evaluate the main dermatological complaints of Brazilian women during this period, comparing the compatibility of these complaints with similar studies that evaluated skin health at menopause. Methods: This study interviewed 463 postmenopausal women between 42 and 83 years old through a public electronic questionnaire in the SurveyMonkey app about their perception of the changes noticed in their hair and skin after menopause. All statistical analyses were performed in R v. 3.6.1. Results with p-values < 0.05 were considered significant. Results: Dermatological health in menopausal women, especially the quality of the skin, nails and hair may deteriorate with estrogen deficits. As life expectancy increases and hormone replacement therapy (HRT) becomes more common, a greater understanding of their dermatological effects in menopause is needed. Conclusions: Menopause strongly impacts skin quality and worsens women’s self-esteem and quality of life. There is still a lack of knowledge about HRT and specific treatments for improving skin, hair and nails.
Particle Size Distribution and Feed Sorting of Hay-Based and Silage-Based Total Mixed Ration of Calabrian Dairy Herds
Authors: Spina Anna Antonella , Iommelli Piera , Morello Anna Rita , Britti Domenico , Pelle Nicola , Poerio Giusi , Morittu Valeria Maria
Published: January 2024

Dietary particle size is one of the most relevant factors influencing rumen function and the selection of the most palatable components of the total mixed ration (TMR) by cows. The aim of this study was to evaluate the particle size distribution (PSD), homogeneity, sorting level, physically effective NDF (peNDF) content of TMRs, and production performances in Calabrian commercial dairy herds in southern Italy. The research was conducted in 13 farms, including 8 with hay-based TMR and 5 with silage-based TMR. All herds delivered fresh feed once a day. At each farm, the TMRs were examined with the Penn State Particle Separator (PSPS) to determine PSD, homogeneity, and feed sorting at two time points (i.e., at fresh feed delivery = T0 and 24 h after feed delivery = Tf). None of the diets that were evaluated met the recommended PSD, showing an excess of long fraction, very short fraction, or both. The homogeneity was good except for three diets, but particle selection raised some concerns in 85% of the farms due to the preferential consumption of the very short fraction by the cows, with rejection of the long fractions. All the diets analyzed met the Penn State University recommended neutral detergent fiber (NDF) values (>28%) except for one farm’s diet. In three of the TMRs observed, however, the content of peNDF > 8 mm was less than 15%. NDF and peNDF > 8 mm values of TMRs showed statistically significant correlations with milk fat content. Therefore, it is important to evaluate the chemical and physical properties of TMR to provide a consistent diet and prevent feed sorting.
Egyptian Jallab as Sugar Substitute, Antioxidant, and Colorant Agent in the Manufacturing of Functional Ice Cream
Authors: Hassan Mohamed F. Y. , Salman Khaled H. , Zaki Khaled G. , Hassan Noha A. , Alahaideb Hanadi Saleh S. , Abd-Alla Abd-Ellah A.
Published: January 2024

Egyptian Jallab (EJ) is a conical candy (light to dark brown), manufactured from a part of sugar cane juice, that is used in the black honey industry. EJ is considered an unrefined sugar or a non-centrifugal form of sugar. The traditional use of Jallab is as candy, but it can also be used for making ice cream, cupcakes, biscuits, and toffee, as well as being used in other food applications. In this study, EJ was used as a sugar substitute in ice cream at 0, 25, 50, 75, and 100%. Total solids, titratable acidity, pH, protein, ash, fat, specific gravity, weight per gallon, viscosity, color attributes, total antioxidant activity, total phenolic content, and total flavonoid contents, as well as microbiological analyses, were tested. The total solids, protein, and ash in the Egyptian Jallab ice cream (EJIC) increased from 39.30, 4.85, and 0.87 to 41.19, 6.36, and 1.42, respectively. The gradual sugar substitution led to a significant increase in specific gravity and weight per gallon in pounds. The lightness (L*) of the ice cream decreased significantly due to the substitution of EJ for sugar. Moreover, there was a significant increase in a* (from 0.147 in control samples to 5.52 in treatment 4, which had 100% EJ). The changes in the b* values of Jallab ice cream samples were significantly increased due to the substitution of EJ for sugar. The control samples had a low value of antioxidant activity (21.53%) when compared with the treatment, which has EJ (88.82, 89.96, 91.98, and 92.14%) for EJIC1, EJIC2, EJIC3, and EJIC4, respectively. The total phenolic contents are 2.07, 3.03, 4.14, and 4.68 fold higher in the treatments with EJ substituted for sugar than in the control samples. Total flavonoid contents increased from 5.73 mg QE g−1 in control samples (TC) to 14.68, 21.54, 30.48, and 34.15 mg QE g−1 in EJIC1, EJIC2, EJIC3, and EJIC4 mg QE g−1 in ice cream samples, respectively.
IP-10 for the Diagnosis and Treatment Monitoring of Tuberculosis in Children
Authors: Strzelak Agnieszka , Komorowska-Piotrowska Anna , Borowa Agnieszka , Krasińska Maria , Feleszko Wojciech , Kulus Marek
Published: January 2024

Purpose: To determine the utility of interferon-gamma-inducible protein 10 (IP-10) for identifying active tuberculosis (TB) and TB infection (TBI) in children in BCG-vaccinated populations, establish its diagnostic performance characteristics, and evaluate changes in IP-10 level during anti-TB chemotherapy. Methods: Concentrations of IP-10 and IFN-γ were measured in QuantiFERON-TB Gold (QFT) supernatants in children with suspected TB or due to recent TB contact. A total of 225 children were investigated: 33 with active TB, 48 with TBI, 83 TB contacts, 20 with suspected TB but other final diagnoses, and 41 controls. In 60 children, cytokine responses were evaluated at a follow-up visit after 2 months of anti-TB treatment. Results: IP-10 expression was significantly higher in infected children (active TB and TBI cases) than in uninfected individuals. IP-10 proved effective in identifying TB infection at its optimal cut-off (>1084.5 pg/mL) but was incapable of differentiating between children with active TB and TBI. Combining IP-10 and IFN-γ increased the QFT sensitivity. IP-10 but not IFN-γ decreased significantly during anti-TB treatment in children with active TB (p = 0.003). Conclusion: IP-10 identifies TB infection and declines during anti-TB chemotherapy in children. Incorporating IP-10 into new immunodiagnostic assays could improve TB diagnosis and allow for treatment monitoring.
One Fell Swoop: Septic Muscle Embolism and Central Venous Catheter Infection Imaged with [18F] Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography
Authors: Filippi Luca , Lacanfora Annamaria , Garaci Francesco
Published: January 2024

We describe the case of a 43-year-old female with hereditary hemochromatosis, previously without cardiac issues, who presented with a severe fever (>40 to 41 °C) to our hospital. Initial assessments, including transthoracic echocardiography, showed no typical signs of infective endocarditis. A contrast-enhanced CT scan revealed a hypodense area in the right subscapular muscle, alongside pleural thicknesses. Due to the critical condition, a central venous catheter (CVC) was implanted for immediate intravenous treatment. Subsequent blood cultures, positive for Staphylococcus aureus, and transesophageal echocardiography led to a diagnosis of multivalvular infective endocarditis (MIE). Subsequently, the patient underwent positron emission tomography/computed tomography (PET/CT) with [18F]Fluorodeoxyglucose ([18F]FDG), which detected increased tracer incorporation in the muscle lesion, CVC, and pleural thicknesses. The final diagnosis was CVC infection and septic embolism to the subscapular muscle in a patient with pleuritis. This case showcases the critical role of [18F]FDG PET/CT as whole-body imaging modality in diagnosing and managing complex infective cases.
Ultrasound Imaging of the Articularis Genus Muscle: Implications for Ultrasound-Guided Suprapatellar Recess Injection
Authors: Wu Wei-Ting , Chang Ke-Vin , Naňka Ondřej , Mezian Kamal , Ricci Vincenzo , Wang Bow , Özçakar Levent
Published: January 2024

Elucidating its dynamic interaction within the knee joint, this exploration delves into the awareness regarding the articularis genus muscle for ultrasound-guided suprapatellar recess injections. While injections into the infrapatellar recess may proceed without ultrasound guidance, we highlight concerns regarding the potential cartilage injury. In contrast, especially with ultrasound guidance, suprapatellar recess injections significantly mitigate this risk, especially in the case of collapsed recess. Originating from the distal femur and vastus intermedius, the articularis genus muscle influences the tension of the suprapatellar recess during knee motion. Sonographically identifying this muscle involves visualizing the slender linear structure of the suprapatellar recess, with guidance on differentiation from the vastus intermedius. We provide a succinct approach to ultrasound-guided suprapatellar recess injections, emphasizing needle insertion techniques and strategies to prevent fluid accumulation. In conclusion, this study serves as a concise clinician’s guide, underscoring the significance of the articularis genus muscle’s sonoanatomy in ultrasound-guided suprapatellar recess injections. Ultimately, procedural precision and patient safety can be advanced in this aspect.
Correlation between Time to Hyperbaric Oxygen Therapy and Delayed Neurological Sequelae in Acute Carbon Monoxide Poisoning Patients
Authors: Choi Sungwoo , Nah Sangun , Han Sangsoo
Published: January 2024

Carbon monoxide (CO) is one of the most common causes of intoxication. Delayed neurologic sequelae (DNS) have a major impact on prognosis of CO poisoning patients. Hyperbaric oxygen therapy (HBOT) is widely used to treat DNS. However, there is no consensus regarding the optimal timing of HBOT. This prospective study enrolled patients who visited the hospital from November 2019 to October 2022. The cutoff value for the latency to HBOT after CO exposure was determined, and the area under the receiver operating characteristic curve (AUC) was estimated. In total, 167 patients were divided into non-DNS and DNS groups. The initial Glasgow Coma Scale (GCS) score, CO exposure time, latency to HBOT after CO exposure, median length of hospital stay (p < 0.001) and creatine kinase (p = 0.016) showed significant differences. A GCS score ≤ 9 had an odds ratio (OR) of 5.059 (95% confidence interval [CI]: 1.602–15.976, p = 0.006), and latency to HBOT after CO exposure ≥ 200 min had an OR of 18.971 (95% CI: 4.310–83.508, p < 0.001). The AUC was 0.8235 (95% CI: 0.7504–0.8966). A GCS score ≤ 9 and latency to HBOT ≥ 200 min may be significant risk factors for DNS.
An Image Processing Approach for Real-Time Safety Assessment of Autonomous Drone Delivery
Authors: Alsawy Assem , Moss Dan , Hicks Alan , McKeever Susan
Published: January 2024

The aim of producing self-driving drones has driven many researchers to automate various drone driving functions, such as take-off, navigation, and landing. However, despite the emergence of delivery as one of the most important uses of autonomous drones, there is still no automatic way to verify the safety of the delivery stage. One of the primary steps in the delivery operation is to ensure that the dropping zone is a safe area on arrival and during the dropping process. This paper proposes an image-processing-based classification approach for the delivery drone dropping process at a predefined destination. It employs live streaming via a single onboard camera and Global Positioning System (GPS) information. A two-stage processing procedure is proposed based on image segmentation and classification. Relevant parameters such as camera parameters, light parameters, dropping zone dimensions, and drone height from the ground are taken into account in the classification. The experimental results indicate that the proposed approach provides a fast method with reliable accuracy based on low-order calculations.
Identity-Based Matchmaking Encryption with Equality Test
Authors: Yan Zhen , Lin Xijun , Zhang Xiaoshuai , Xu Jianliang , Qu Haipeng
Published: January 2024

The identity-based encryption with equality test (IBEET) has become a hot research topic in cloud computing as it provides an equality test for ciphertexts generated under different identities while preserving the confidentiality. Subsequently, for the sake of the confidentiality and authenticity of the data, the identity-based signcryption with equality test (IBSC-ET) has been put forward. Nevertheless, the existing schemes do not consider the anonymity of the sender and the receiver, which leads to the potential leakage of sensitive personal information. How to ensure confidentiality, authenticity, and anonymity in the IBEET setting remains a significant challenge. In this paper, we put forward the concept of the identity-based matchmaking encryption with equality test (IBME-ET) to address this issue. We formalized the system model, the definition, and the security models of the IBME-ET and, then, put forward a concrete scheme. Furthermore, our scheme was confirmed to be secure and practical by proving its security and evaluating its performance.
The Restoration of Degraded Landscapes along the Urban–Rural Gradient of Lubumbashi City (Democratic Republic of the Congo) by Acacia auriculiformis Plantations: Their Spatial Dynamics and Impact on Plant Diversity
Authors: Useni Sikuzani Yannick , Khoji Muteya Héritier , Yona Mleci Jonas , Mpanda Mukenza Médard , Malaisse François , Bogaert Jan
Published: January 2024

This study examines the spatio-temporal dynamics of Acacia auriculiformis in Lubumbashi city, southeastern Democratic Republic of Congo, in the context of rapid urbanization following the liberalization of the mining sector. The city has experienced significant demographic growth and unplanned spatial expansion, resulting in a decrease in vegetation cover. The introduction and proliferation of A. auriculiformis, an exotic tree species, have occurred without strategic planning or monitoring. Utilizing digitized remote sensing imagery from 2006, 2014, and 2021, we quantified the expansion of A. auriculiformis along the urban–rural gradient. Additionally, a floristic inventory conducted in 2021 provided insights into tree diversity within A. auriculiformis plantations. Our findings indicate a substantial increase in the number and area of A. auriculiformis patches, predominantly in urban zones. However, the patch values, highest in 2006, were shown to decline by 2021, especially in urban areas. The floristic inventory identified 39 tree species within A. auriculiformis plantations, including predominant species such as Albizia lebbeck, Albizia alba, and Leucaena leucocephala. Notably, 20 of these species are exotic, with half being invasive. In contrast, the 19 indigenous species were primarily found in peri-urban areas. While a greater number of tree species were observed in urban zones, larger average diameters were recorded in peri-urban zones. The persistence and expansion of A. auriculiformis in a landscape characterized by declining tree cover suggest its potential sustainability in this setting. However, A. auriculiformis plantations have facilitated the establishment of predominantly exotic and potentially invasive species. These findings highlight the need for the strategic management of A. auriculiformis and associated exotic flora to mitigate their spread and to consider their role in the restoration of degraded lands.
When and for Whom Does Growth Becomes Jobless?
Authors: Butkus Mindaugas , Dargenytė-Kacilevičienė Laura , Matuzevičiūtė Kristina , Ruplienė Dovilė , Šeputienė Janina
Published: January 2024

The results of previous research suggest that the elasticity of employment with respect to output is not constant within each phase of the business cycle and might depend on the maturity of that phase. Nevertheless, empirical evidence is almost non-existent. Using the unemployment gap as the proxy for the maturity of the business cycle phase, this paper seeks to determine heterogeneous elasticity across different business cycle phases. Furthermore, we aim to evaluate specific elasticities for separate demographic groups, considering gender, age, and educational attainment level, to identify the most vulnerable to jobless growth. Our specification is based on the employment version of Okun’s law, and estimates are provided for the whole EU-27 panel covering the period from 2000 to 2022. Our results suggest that elasticity is higher when the unemployment gap is positive and increasing and lower when the gap decreases, regardless of the business cycle phase. Thus, it can be argued that the possibility of growth increasing employment is very limited when the economy operates at its potential level (full employment) for all demographic groups.
A Primer for Design and Systems Thinkers: A First-Year Engineering Course for Mindset Development
Authors: Leung Jac Ka Lok , Ng Davy Tsz Kit , Tsui Chi-Ying
Published: January 2024

Teaching students to think in complex systems and design is presumably intricate, creative, and nonlinear. However, due to the overwhelming number of standardized tools and frameworks, the process sometimes ends up being procedural and deductive. Conformity to rigid procedures loses the intention of creative problem-solving towards tackling wicked problems. This paper proposes a project-based approach to instill the mindsets for those who aspire to be design and systems thinkers through a first-year engineering course. Using the ADDIE model, the instructional design was implemented in three modules focusing on design, systems, and integration for real-world applications. The instructional design was evaluated via course feedback surveys and focus-group interviews. Students indicated positive impacts on creative mindsets, habits of systems thinkers, and interdisciplinary awareness. However, negative comments about the course arrangement such as heavy workload and disconnection between topics were identified. Suggestions from students, challenges faced by the instructors, and recommended practices are discussed. In times of increasing need to reform higher education due to digitization and artificial intelligence, this study provides a timely investigation of a new project-based and mindset-focused pedagogy in design and systems thinking education.
Scouts’ Perspectives on Learning Experiences from a Pedagogical Innovation Scope
Authors: Sinde José , Alves José Matias
Published: January 2024

The Portuguese educational system aims at nurturing the holistic development of individuals and societal progress, surpassing the mere transmission of curriculum-based knowledge. While considerable advancements have been made, the need for ongoing innovation and equal educational opportunities remains evident, so that all children can have not only equal access to education, but also equal chances of success. This study investigates the largest Portuguese Scout movement, the CNE, exploring its organisational and pedagogical approaches, potentially applicable in formal education settings. This research surveyed participants aged 18–22, having completed approximately 12 years in the Scout movement. Data collection via focus group followed a semi-structured script, before a thorough content analysis was carried. Findings are organised as follows: Pedagogical organisation in learning cycles; Patrol system; The four stages of the Project Method; Characterization of the Scout Game and other learning process dimensions; Other competencies and values developed throughout the Scout learning course; and Comparisons with formal education contexts. The discourse of participants strongly suggests the Scout movement’s potential to inspire educational change, displaying consistent indicators of pedagogical innovation. The study advocates for further exploration of the CNE’s pedagogical functioning and its potential to serve as an inspiration for transformative changes in educational systems worldwide, as evidenced by the learners’ reflections.
Competences Expected and Gained during the Teaching Practicum: Analysis of Three Competence Areas Affected during the Pandemic
Authors: Prieto-Prieto Josué , Cruz-Rodríguez Javier , García-Riaza Blanca , Hernández-Serrano María José
Published: January 2024

This study analyzes three competency areas promoted in the Practicum during the 2020–2021 and 2021–2022 academic years: pedagogical and didactic competences, coexistence and participation management and collaborative work. To this end, using a non-experimental design, data were collected from a sample of 725 Education students from University of Salamanca with the aims of determining the students’ expectations about the Practicum prior to its development and of measuring its impact on the students during its development or the influence of the context imposed during the COVID-19 pandemic. The research was contextualized in two Practicum subjects included in the curricula of the bachelor’s degrees in Early Childhood/Primary Education at the University of Salamanca. Both degrees are taught at three different university centers, Ávila, Salamanca and Zamora. The results revealed the importance of the preparation of the students in their university training period with regard to the first competence area, together with the perceptions of the students about what they learnt in the competences of areas 2 and 3. Relevant conclusions were drawn about their learning expectations towards the second area and the problems caused by the pandemic in order to develop communication skills with students and families.
Supporting Learning Differences: Effects of Cognitive Training on Cognitive Abilities in a School-Based Sample
Authors: Looney Lisa , Wong Eugene H. , Rosales Kevin P. , Bacon Jennifer M. , Wiest Dudley J.
Published: January 2024

A growing body of research demonstrates the effectiveness of computerized cognitive training (CCT) in building specific abilities (e.g., working memory) among school-age children. As a result, CCT is increasingly cited as a means to enhance and support students’ academic performance and school experience. However, many studies exploring CCT as an intervention have done so outside of the school setting, limiting its potential impact with regard to students who may benefit from it but cannot access such supports. This project examined the efficacy of a CCT program implemented within the academic day for all students attending a private school. The findings showed that two CCT programs resulted in improvements in working memory, cognitive flexibility, and/or processing speed among third graders through sixth graders (N = 95). Furthermore, this project demonstrates a model for the effective integration of CCT into a school day without interrupting the academic curriculum. The present results have important implications for the current ideological shift in education that focuses on how to more broadly address students’ learning differences.
Impact of Learning Analytics Guidance on Student Self-Regulated Learning Skills, Performance, and Satisfaction: A Mixed Methods Study
Authors: Tzimas Dimitrios E. , Demetriadis Stavros N.
Published: January 2024

Learning analytics (LA) involves collecting, processing, and visualizing big data to help teachers optimize learning conditions. Despite its contributions, LA has not yet been able to meet teachers’ needs because it does not provide sufficient actionable insights that emphasize more on analytics and less on learning. Our work uses specific analytics for student guidance to evaluate an instructional design that focuses on LA agency between teachers and students. The research goal is to investigate whether the minimal and strong guidance provided by the LA learning approach has the same impact on student outcomes. The research questions are as follows “Does the LA-based minimal and strong guidance learning approach have the same impact on student performance and SRL skills? What are the students’ learning perceptions and satisfaction under LA-based guidance?” A mixed methods study was conducted at a university in which LA-based strong guidance was applied to the experimental group and minimal guidance was given to the control group. When strong guidance was applied, the results indicated increased final grades and SRL skills (metacognitive activities, time management, persistence, and help seeking). Furthermore, student satisfaction was high with LA-based guidance. Future research could adapt our study to nonformal education to provide nuanced insights into student outcomes and teachers’ perceptions.
Seeing Eye to Eye? Comparing Faculty and Student Perceptions of Biomolecular Visualization Assessments
Authors: Beckham Josh T. , Dries Daniel R. , Hall Bonnie L. , Mitton-Fry Rachel M. , Engelman Shelly , Burch Charmita , Acevedo Roderico , Mertz Pamela S. , Vardar-Ulu Didem , Agrawal Swati , Fox Kristin M. , Austin Shane , Franzen Margaret A. , Jakubowski Henry V. , Novak Walter R. P. , Roberts Rebecca , Roca Alberto I. , Procko Kristen
Published: January 2024

While visual literacy has been identified as a foundational skill in life science education, there are many challenges in teaching and assessing biomolecular visualization skills. Among these are the lack of consensus about what constitutes competence and limited understanding of student and instructor perceptions of visual literacy tasks. In this study, we administered a set of biomolecular visualization assessments, developed as part of the BioMolViz project, to both students and instructors at multiple institutions and compared their perceptions of task difficulty. We then analyzed our findings using a mixed-methods approach. Quantitative analysis was used to answer the following research questions: (1) Which assessment items exhibit statistically significant disparities or agreements in perceptions of difficulty between instructors and students? (2) Do these perceptions persist when controlling for race/ethnicity and gender? and (3) How does student perception of difficulty relate to performance? Qualitative analysis of open-ended comments was used to identify predominant themes related to visual problem solving. The results show that perceptions of difficulty significantly differ between students and instructors and that students’ performance is a significant predictor of their perception of difficulty. Overall, this study underscores the need to incorporate deliberate instruction in visualization into undergraduate life science curricula to improve student ability in this area. Accordingly, we offer recommendations to promote visual literacy skills in the classroom.
A Non-Invasive Load Identification Method Considering Feature Dimensionality Reduction and DB-LSTM
Authors: Huang Nantian , Wang Hao , Wang Xinran , Hu Chenhan , Wang Dongxu
Published: January 2024

As the demand for detailed load data descriptions in modern power systems continues to increase, challenges such as high computational complexity in load identification tasks and high hardware requirements for devices have significantly hindered progress. Therefore, this paper proposes a non-intrusive load identification method using Densely-connected Bi-directional Long Short-Term Memory (DB-LSTM) with Kernel Principal Component Analysis. Firstly, a bilateral sliding window algorithm is employed for event detection in the data collected by load identification devices, checking for the switching on and off of electrical appliances. Secondly, after detecting the switching of load devices and extracting features, Kernel Principal Component Analysis is used to reduce data dimensions due to the complexity of existing features, selecting more relevant characteristics. Finally, a densely connected Bi-directional Long Short-Term Memory (LSTM) network is utilized. This enhances global and dynamic local features by stacking LSTM units and combining them with dense skip connections, providing additional channels for signal transmission, thereby strengthening feature propagation and reducing the number of parameters. This approach lowers computational complexity and improves the efficiency of the model’s load identification. The proposed model is compared and validated against mainstream non-intrusive load identification models through experiments, demonstrating its higher efficiency in load identification.
Analysis of the Possibility of Making a Digital Twin for Devices Operating in Foundries
Authors: Lehrfeld Artur , Jaśkowiec Krzysztof , Wilk-Kołodziejczyk Dorota , Małysza Marcin , Bitka Adam , Marcjan Łukasz , Głowacki Mirosław
Published: January 2024

This work aims to conduct an analysis to find opportunities for the implementation of software incorporating the concept of digital twins for foundry work. Examples of implementations and their impact on the work of enterprises are presented, as is a definition and history of the concept of a digital twin. The outcome of this work is the implementation of software that involves a digital copy of the author’s device, created by the “Łukasiewicz” Research Network at the Krakow Institute of Technology. The research problem of this scientific work is to reduce the number of necessary physical tests on real objects in order to find a solution that saves time and energy when testing the thermal expansion of known and new metal alloys. This will be achieved by predicting the behavior of the sample in a digital environment and avoiding causing it to break in reality. Until now, after an interruption, the device often continued to operate and collect data even though no current was flowing through the material, which could be described as inefficient testing. The expected result will be based on the information and decisions obtained by predicting values with the help of a recurrent neural network. Ultimately, it is intended to predict the condition of the sample after a set period of time. Thanks to this, a decision will be made, based on which the twin will know whether it should automatically end its work, disconnect the power or call the operator for the necessary interaction with the device. The described software will help the operator of a real machine, for example, to operate a larger number of workstations at the same time, without devoting all their attention to a process that may last even for hours. Additionally, it will be possible to start work on selecting the chemical composition of the next material sample and plan its testing in advance. The machine learning handles model learning and value prediction with the help of artificial neural networks that were created in Python. The application uses historical test data, additionally retrieves current information, presents it to the user in a clear modern form and runs the provided scripts. Based on these, it decides on the further operation of the actual device.
Resolving the Java Representation Exposure Problem with an AST-Based Deep Copy and Flexible Alias Ownership System
Authors: Zhuang Yung-Yu , Kuo Wei , Tseng Shang-Chun
Published: January 2024

Encapsulation is a critical factor in object-oriented programming languages and design patterns. Nevertheless, programs written in languages like Java may encounter broken encapsulation due to the lack of sufficient supply for ownership and immutability. As a result, this paper introduces SlimeJava, an ownership system extension based on abstract syntax trees and annotation utilization of Java that aims to help programmers prevent representation exposure. We show the features of the proposal with a motivating example using the Memento pattern. We then discuss how the utilization of annotations realizes ownership and why it is effective in avoiding representation exposure issues by comparing it with existing approaches. In the end, a quantitative performance evaluation was conducted to prove that SlimeJava does not cause a substantial overhead in execution time compared to native Java.
Considerations on the Development of High-Power Density Inverters for Highly Integrated Motor Drives
Authors: Mikhaylov Yury , Aboelhassan Ahmed , Buticchi Giampaolo , Galea Michael
Published: January 2024

In transportation electrification, power modules are considered the best choice for power switches to build a high-power inverter. Recently, several studies have presented prototypes that use parallel discrete MOSFETs and show similar overall output capabilities. This paper aims to compare the maximum output power and losses of inverters with different types (surface-mounted, through-hole-mounted and power modules) of commercially available switching devices, and, therefore, discuss the theoretical boundaries of each technology. The numerical analysis relies on detailed power loss and thermal models, with adjustments made for gate current and realistic parameters of the cooling system. The analysis includes two case studies with different targets, including minimum dimensional characteristics and maximum output power. The results demonstrate that discrete MOSFETs can provide improved capabilities in contrast to power modules under certain conditions.