Rotation Estimation Based on Anisotropic Angular Radon Spectrum

In this letter, we present the anisotropic Angular Radon Spectrum (ARS), a novel feature for global estimation of rotation in a two dimension space. ARS effectively describes collinearity of points and has the properties of translation-invariance and shift-rotation. We derive the analytical expression of ARS for Gaussian Mixture Models (GMM) representing point clouds where the Gaussian kernels have arbitrary covariances. Furthermore, we developed a preliminary procedure for simplification of GMM suitable for efficient computation of ARS. Rotation between point clouds is estimated by searching of maximum of correlation between their spectra. Correlation is efficiently computed from Fourier series expansion of ARS. Experiments on datasets of distorted object shapes, laser scans and on robotic mapping datasets assess the accuracy and robustness to noise in global rotation estimation

Towards a multidimensional measure of well-being: cross-cultural support through the Italian validation of the well-being profile

Background The Well-being Profile (WB-Pro) is a multi-item and multidimensional instrument with strong psychometric properties and a solid theoretical grounding. It includes aspects of hedonic and eudaimonic well-being that can be used at the individual and social levels.MethodWe developed the Italian version through back-translation procedures. The aim of this study is to validate the WB-Pro in Italian as well as to better understand its multidimensionality through bifactor analysis. A sample of 1451 participants (910 = women, 62.7%; age range: 18-70, M-age = 32.34, SD-age = 13.64) was involved.ResultsThe 15-factor structure was confirmed with CFA and ESEM and was invariant across gender, age, and education. We examined convergent and discriminant validity and a bifactorial representation. Short versions of the WB-Pro were tested.DiscussionEven though a few items of the Italian version of the WB-Pro might benefit from revision (e.g., clear-thinking scale), this study confirms the theoretical and empirical strength of the WB-Pro.ConclusionsThis study supports the WB-Pro validity and usefulness in studying well-being and for professional psychological applications to assess well-being in both individuals and groups

High-School Satisfaction Scale (H-Sat Scale): Evaluation of Contextual Satisfaction in Relation to High-School Students' Life Satisfaction

Recent literature on positive psychology underlines the crucial role of schools to create a psychologically healthy environment and to set programs and strategies fostering adolescents’ well-being. The aim of the present study is to validate a scale that measures scholastic satisfaction since a scientific evaluation and interventions on school satisfaction can help professionals to support adolescents’ positive development and school adjustment. We adapted the College Satisfaction Scale (CSS) and confirmed the previous five-dimensional structure also in a high school students’ sample (n = 792). The High-school Satisfaction Scale (H-Sat Scale) evaluates five dimensions of school satisfaction: appropriateness of choice (CH), quality of school services (SE), relationships with classmates (RE), effectiveness of study habits (ST) and usefulness for a future career (CA). The questionnaire consists of 20 items; it showed good psychometric features and, consistent with previous literature, confirmed its validity in relation to life satisfaction and quality of life of high school students. Compared with previous scales, the H-Sat evaluates two innovative areas of school satisfaction since it gives a measure of satisfaction in career path (appropriateness of choice and usefulness for future career) could help school counsellors to set interventions in this field

Endoscopic endonasal approach for loco-regional recurrent clivus chordomas

Introduction. Role of surgery for loco-regional recurrences of clivus chordomas (CCs) is still debated. It has been proposed in selected cases with a curative or with palliative intent, eventually followed by radiation or chemo/radiation treatments. Only limited data on the endoscopic endonasal approach (EEA) are available. Research question. To assess the role of EEA for loco-regional recurrent CCs. Materials and Methods. All consecutive loco-regional recurrent CCs operated by EEA at our Institution from 1998 to 2021 were identified. The extension of tumor resection, symptoms control, overall survival (OS), and progression free survival (PFS) were assessed. Results. Series includes 54 patients (53.7% females, mean age 55± 14 years). Surgery was planned with a resective aim in 35 (64.8%) patients, while it was palliative in 19 (35.2%). Gross tumor removal was achieved in 24 cases (44.4%). Main complications consisted of 2 (3.7%) CSF leaks. Further local relapses were observed in 30 (55.5%) patients after 25± 24 months; 29 (53.7%) patients deceased after 34 ± 31 months. OS and PFS were lower in these cases than primary surgeries (p<0.001 and p<0.001), but cases undergone surgery with a resective aim had a significant better OS and PFS than for those treated for palliation (p<0.001). Determinants of recurrences were tumoral size (p=0.48) and previous radiotherapy (p=009). Discussion and Conclusions. EEA has proven to be effective for loco-regional recurrent CCs alleviating patients symptoms and preserving their quality of life with limited morbidities. However, because overall prognosis is poor, EEA should be reserved to selected recurrent cases

Role of endoscopic endonasal approach for craniopharyngiomas extending into the third ventricle in adults

Introduction. Recent advancements in endoscopic endonasal approach (EEA) have favored its adoption for craniopharyngiomas extended to 3rd ventricle (3VCPs). However, for lack of extensive series, its outcome, limits, and indications remain debated. Research question. To assess the EEA results of for 3VCPs and identify those factors determining the choice of this approach. Material and Methods. Records of patients with 3VCPs, consecutively operated through an EEA at our Institution were retrospectively analyzed. Demographic and clinico-radiological data, rate of tumor resection, complications and outcome at follow-up were collected. Results. Thirty-six patients (19 females, mean age: 51.1 ± 15.9 yrs) were included. Extended transplanum-transtuberculum approach was performed in all cases Radical resection was achieved in 33 patients (91.7%). At follow-up, visual deficits improved/normalized in 21 cases (58.3%), and 35 (97.2%) presented with panhypopituitarism and DI. Anatomical (displacement of the chiasm and hypothalamus), clinical (age and pre-operative visual and endocrinological function) and tumoral (consistency, presence of hydrocephalus) parameters resulted relevant in determining the choice of this approach. Discussion and Conclusion. EEA offers a valid and direct route for 3VCPs, which permits to safely manage these tumors. In our series, EEA was chosen for tubero-infundibular forms with chiasm displaces antero-superiorly, and preferred in younger patients, with visual disturbances, comprimesed endocrinological function and no hydrocephalus. It requires a specific training and should be reserved in dedicated centers. Because no single approach is ideal for every 3VCP, all surgical options should be considered as complementary and selected basing on clinical, anatomical and tumoral features of each case