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Defence Technology（防务技术） 2024年第10期40卷 225-241页

作者： athanasios N.Skraparlis Klimis S.Ntalianis Nicolas Tsapatsoulis University of West Attica 28 Agiou Spyridonos str.Athens 12241Greece Cyprus University of Technology Limassol 3036Cyprus

Protection of urban critical infrastructures(CIs)from GPS-denied,bomb-carrying kamikaze drones(G-BKDs)is very *** approaches based on drone jamming,spoofing,communication interruption and hijacking cannot be applied in the case under examination,since G-B-KDs are *** the other hand,drone capturing schemes and electromagnetic pulse(EMP)weapons seem to be ***,again,existing approaches present various limitations,while most of them do not examine the case of *** paper,focuses on the aforementioned under-researched field,where the G-B-KD is confronted by two defensive *** first neutralizes and captures the kamikaze drone,while the second captures the *** defensive drones are equipped with a net-gun and an innovative algorithm,which,among others,estimates the locations of interception,using a real-world trajectory ***,one of the defensive drones is also equipped with an EMP weapon to damage the electronics equipment of the kamikaze drone and reduce the capturing time and the overall *** simulated experiments and comparisons to state-of-art methods,reveal the advantages and limitations of the proposed *** specifically,compared to state-of-art,the proposed approach improves:(a)time to neutralize the target by at least 6.89%,(b)maximum number of missions by at least 1.27%and(c)total cost by at least 5.15%.

关键词： Critical infrastructure Kamikaze drone GPS-Denied Bomb-carrying Trajectory estimation

Mechanisms of shoulder trauma: Current concepts

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World Journal of Orthopedics 2024年第1期15卷 11-21页

作者： Konstantinos Mastrantonakis athanasios Karvountzis Christos K Yiannakopoulos Georgios Kalinterakis Department of Orthopedic General Hospital of RethymnonRethymnon 73100CreteGreece 1^(st)Orthopedic Department Naval Hospital of AthensAthens 11521Greece Department of Orthopaedic Surgery National and Kapodistrian University of AthensAthens 11527Greece

Acute traumatic injuries to the glenohumeral articulation are *** types of injuries depend on age,muscle strength,bone density,and biomechanics of the traumatic *** the different mechanisms of trauma and how they affect the functional anatomical structures of the shoulder joint is crucial for the treatment of these ***,when clinicians have knowledge of these mechanisms they can accurately diagnose and treat shoulder pathology and predict distinct injury ***,we have described the fundamentals of the mechanisms of injury of the glenohumeral dislocation,dislocation with fracture of the humeral head,and the proximal humerus *** have focused on common injury mechanisms and the correlation with radiological *** and laboratory findings of distinct types of injury were also discussed.

关键词： Mechanism Hill-Sachs Shoulder dislocation Proximal humerus fracture Shoulder biomechanics

Height-diameter models for King Boris fir(Abies borisii regis Mattf.) and Scots pine(Pinus sylvestris L.) in Olympus and Pieria Mountains, Greece

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Journal of Mountain Science 2024年第5期21卷 1475-1490页

作者： Dimitrios I.RAPTIS Dimitra PAPADOPOULOU Angeliki PSARRA athanasios A.FALLIAS Aristides G.TSITSANIS Vassiliki KAZANA Renewable Natural Resource Management and Bioeconomy Laboratory Department of Forest and Natural Environment SciencesInternational Hellenic University66100 DramaGreece

In forest science and practice, the total tree height is one of the basic morphometric attributes at the tree level and it has been closely linked with important stand attributes. In the current research, sixteen nonlinear functions for height prediction were tested in terms of their fitting ability against samples of Abies borisii regis and Pinus sylvestris trees from mountainous forests in central Greece. The fitting procedure was based on generalized nonlinear weighted regression. At the final stage, a five-quantile nonlinear height-diameter model was developed for both species through a quantile regression approach, to estimate the entire conditional distribution of tree height, enabling the evaluation of the diameter impact at various quantiles and providing a comprehensive understanding of the proposed relationship across the distribution. The results clearly showed that employing the diameter as the sole independent variable, the 3-parameter Hossfeld function and the 2-parameter N?slund function managed to explain approximately 84.0% and 81.7% of the total height variance in the case of King Boris fir and Scots pine species, respectively. Furthermore, the models exhibited low levels of error in both cases(2.310m for the fir and 3.004m for the pine), yielding unbiased predictions for both fir(-0.002m) and pine(-0.004m). Notably, all the required assumptions for homogeneity and normality of the associated residuals were achieved through the weighting procedure, while the quantile regression approach provided additional insights into the height-diameter allometry of the specific species. The proposed models can turn into valuable tools for operational forest management planning, particularly for wood production and conservation of mountainous forest ecosystems.

关键词： Generalized nonlinear weighted regression Monte Carlo cross-validation Mountainous ecosystems Quantile regression Central Greece

Comparison of Spatial Interpolation Methods of Precipitation Data in Central Macedonia, Greece

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Computational Water, Energy, and Environmental Engineering 2024年第1期13卷 13-37页

作者： athanasios K. Margaritidis Faculty of Agriculture Forestry and Natural Environment School of Agriculture Department of Hydraulics Soil Science & Agriculture Engineering Thessaloniki Greece

The purpose of this paper is to investigate the spatial interpolation of rainfall variability with deterministic and geostatic inspections in the Prefecture of Kilkis (Greece). The precipitation data where recorded from 12 meteorological stations in the Prefecture of Kilkis for 36 hydrological years (1973-2008). The cumulative monthly values of rainfall were studied on an annual and seasonal basis as well as during the arid-dry season. In the deterministic tests, the I.D.W. and R.B.F. checks were inspected, while in the geostatic tests, Ordinary Kriging and Universal Kriging respectively. The selection of the optimum method was made based on the least Root Mean Square Error (R.M.S.E.), as well as on the Mean Error (M.E.), as assessed by the cross validation analysis. The geostatical Kriging also considered the impact of isotropy and anisotropy across all time periods of data collection. Moreover, for Universal Kriging, the study explored spherical, exponential and Gaussian models in various combinations. Geostatistical techniques consistently demonstrated greater reliability than deterministic techniques across all time periods of data collection. Specifically, during the annual period, anisotropy was the prevailing characteristic in geostatistical techniques. Moreover, the results for the irrigation and seasonal periods were generally comparable, with few exceptions where isotropic methods yielded lower (R.M.S.E.) in some seasonal observations.

关键词： Interpolation Kriging I.D.W. Precipitation Greece

Understanding the Theory of Karp, Miller and Winograd

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Journal of Applied Mathematics and Physics 2024年第4期12卷 1203-1236页

作者： athanasios I. Margaris Department of Digital Systems Gaiopolis Campus University of Thessaly Larissa Greece

The objective of this tutorial is to present the fundamental theory of Karp, Miller and Winograd, whose seminal paper laid the foundations regarding the systematic description of the organization of computations in systems of uniform recurrent equations by means of graph structures, via the definition of computability conditions and techniques for the construction of one-dimensional and multi-dimensional scheduling functions. Besides the description of this theory, the paper presents improvements and revisions made by other authors and furthermore, points out the differences regarding the conditions of causality and dependency between the general case of systems of recurrent equations and the special case of multiple nested loops.

关键词： Computability Scheduling Computations Recurrent Equations

Transurethral resection of bladder tumor: A systematic review of simulator-based training courses and curricula

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Asian Journal of Urology 2024年第1期11卷 1-9页

作者： Panagiotis Kallidonis Angelis Peteinaris Gernot Ortner Kostantinos Pagonis Costantinos Adamou athanasios Vagionis Evangelos Liatsikos Bhaskar Somani Theodoros Tokas Department of Urology University Hospital of RionPatrasGreece Department of Urology and Andrology General Hospital Hall I.T.Hall in TirolAustria Medical University of Vienna ViennaAustria Department of Urology University Hospital Southampton NHS Foundation TrustSouthamptonUK

Objective:Transurethral resection of bladder tumor is one of the most common everyday urological *** kind of surgery demands a set of skills that need training and *** this review,we aimed to investigate the current literature to find out if simulators,phantoms,and other training models could be used as a tool for teaching ***:A systematic review was performed according to the Preferred Reporting Items for Systematic reviews and Meta-Analyses statement and the recommendations of the European Association of Urology guidelines for conducting systematic *** out of 932 studies met our inclusion criteria and are presented in the current ***:The UroTrainer(Karl Storz GmbH,Tuttlingen,Germany),a virtual reality training simulator,achieved positive feedback and an excellent face and construct validity by the *** inspection of bladder mucosa,blood loss,tumor resection,and procedural time was improved after the training,especially for inexperienced urologists and medical *** construct validity of UroSim®(VirtaMed,Zurich,Switzerland)was *** simulator(Samed GmbH,Dresden,Germany)was found to be a realistic and useful tool by experts and urologists with intermediate *** test objective competency model based on SIMBLA simulator could be used for evaluating *** porcine model of the Asian Urological Surgery Training and Education Group also received positive feedback by the participants that tried *** Simulation and Technology Enhanced Learning Initiative Project had an extraordinary face and content validity,and 60%of participants would like to use the simulators in the *** 5-day multimodal training curriculum“Boot Camp”in the United Kingdom achieved an increase of the level of confidence of the participants that lasted months after the ***:Simulators and courses or curricula based on a simulator training could be a valuable learning tool fo

关键词： Simulator Train Curriculum Transurethral resection Vaporesection Laser Bladder

Critical considerations for the management of acute abdomen in transplant patients

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World Journal of Transplantation 2024年第2期14卷 8-12页

作者： Efstathios T Pavlidis Georgios Katsanos athanasios Kofinas Georgios Tsoulfas Ioannis N Galanis Theodoros E Pavlidis The 2^(nd)Department of Propaedeutic Surgery Hippokration General HospitalSchool of MedicineAristotle University of ThessalonikiThessaloniki 54642Greece Department of Transplantation Surgery Center for Research and Innovation in Solid Organ TransplantationAristotle University of ThessalonikiSchool of MedicineThessaloniki 54642Greece

The number of solid organ transplantations performed annually is increasing and are increasing in the following order:Kidney,liver,heart,lung,pancreas,small bowel,and uterine ***,the outcomes of transplants are impro-ving(organ survival>90%after the 1st year).Therefore,there is a high probability that a general surgeon will be faced with the management of a transplant patient with acute *** problems in immunocompromised patients may not only include graft-related problems but also nongraft-related *** perioperative regulation of immunosuppression,the treatment of accompanying problems of immunosuppression,the administration of cortisol and,above all,the realization of a rapidly deteriorating situation and the accurate evaluation and interpretation of clinical manifestations are particularly important in these *** perioperative assessment and preparation includes evaluation of the patient’s cardiovascular system and determining if the patient has hypertension or suppression of the hypothalamic-pituitary-adrenal axis,or if the patient has had any coagulation mechanism abnormalities or thromboembolic *** in transplant patients is associated with the use of calci-neurin inhibitors,corticosteroids,and antiproliferation *** times,the clinical picture is atypical,resulting in delays in diagnosis and treatment and leading to increased morbidity and *** computed tomo-graphy is of utmost importance for early diagnosis and *** recipients are prone to infections,especially specific infections caused by cytomegalovirus and Clostridium difficile,and they are predisposed to intraop-erative or postoperative complications that require great care and *** is necessary to follow evidence-based therapeutic ***,it is required that the clinician choose the correct therapeutic plan for the patient(conservative,emergency open surgery or minimally invasive s

关键词： Acute abdomen Abdominal emergency surgery Transplantation Immunocompromised patients Immuno-suppression Posttransplantation surgery

Primary unifocal penile follicular center non-Hodgkin lymphoma:Report of a rare case and review of the literature

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Asian Journal of Urology 2024年第1期11卷 134-136页

作者： Nikolaos Kostakopoulos Christos Masaoutis Vasileios Argyropoulos Varvara Pantelaion Panagiotis Theodoropoulos Panagiotis Kouroupakis athanasios Kostakopoulos 1st Department of Urology Metropolitan General HospitalAthensGreece Department of Pathology Metropolitan General HospitalAthensGreece Department of Pathology Evangelismos General Hospital of AthensGreece 2nd Department of Surgery Evangelismos General Hospital of AthensGreece Department of Haematology Sismanogleio General HospitalAthensGreece

Dear Editor,We present a rare case of a primary penile follicular center non-Hodgkin lymphoma and a review of the available literature on this condition.A BCL2 gene transposition which was identified with fluorescent in situ hybridization(FISH)molecular analysis is a unique manifestation not previously reported to the best of our knowledge.A 67-year-old man presented with a 3-month history of a small nodule on the left side of the corona of glans *** patient had no significant medical or family *** patient underwent excision and biopsy of the penile lesion with a 0.5 cm macroscopic margin under local anesthesia and *** was discharged on the day of surgery,and there were no postoperative complications or adverse *** informed consent was obtained from thepatient.

关键词： anesthesia lymphoma rare

Single-center experience with Knee+^(TM) augmented reality navigation system in primary total knee arthroplasty

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World Journal of Orthopedics 2024年第3期15卷 247-256页

作者： Evangelos Sakellariou Panagiotis Alevrogiannis Fani Alevrogianni athanasios Galanis Michail Vavourakis Panagiotis Karampinas Panagiotis Gavriil John Vlamis Stavros Alevrogiannis The 3^(rd)Department of Orthopaedic Surgery National&Kapodistrian University of AthensKAT General HospitalAthens 14561Greece The 1^(st)Department of Orthopaedic Surgery National&Kapodistrian University of AthensAttikon General HospitalAthens 14561Greece Department of Anesthesiology KAT General HospitalAthens 14561Greece Department of Robotic Hip&Knee Orthopaedic Surgery Metropolitan General HospitalAthens 14561Greece

BACKGROUND Computer-assisted systems obtained an increased interest in orthopaedic surgery over the last years,as they enhance precision compared to conventional *** expansion of computer assistance is evolving with the employment of augmented ***,the accuracy of augmented reality navigation systems has not been *** To examine the accuracy of component alignment and restoration of the affected limb’s mechanical axis in primary total knee arthroplasty(TKA),utilizing an augmented reality navigation system and to assess whether such systems are conspicuously fruitful for an accomplished knee *** From May 2021 to December 2021,30 patients,25 women and five men,under-went a primary unilateral *** cases were excluded.A preoperative radiographic procedure was performed to evaluate the limb’s axial *** patients were operated on by the same team,without a tourniquet,utilizing three distinct prostheses with the assistance of the Knee+™augmented reality navigation system in every ***,the same radiographic exam protocol was executed to evaluate the implants’position,orientation and coronal plane *** recorded measurements in 3 stages regarding femoral varus and flexion,tibial varus and posterior ***,the expected values from the Augmented Reality system were *** we calculated the same values after each cut and finally,the same measurements were recorded radiolo-gically after the *** statistical analysis,Lin’s concordance correlation coefficient was estimated,while Wilcoxon Signed Rank Test was performed when *** A statistically significant difference was observed regarding mean expected values and radiographic mea-surements for femoral flexion measurements only(Z score=2.67,P value=0.01).Nonetheless,this difference was statistically significantly lower than 1 degree(Z score=-4.21,P value<0.01).In terms of discrepancies in the calculations of

关键词： Augmented reality Orthopedics Total knee arthroplasty Robotics Knee Navigation

High PSMA expression is associated with immunosuppressive tumor microenvironment in clear cellrenal cell carcinoma

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Precision Clinical Medicine 2024年第2期7卷 190-193页

作者： Panagiotis J.Vlachostergios athanasios Karathanasis Konstantinos Dimitropoulos Ioannis Zachos Vassilios Tzortzis Department of Medical Oncology IASO Thessalias HospitalLarissa 41110Greece Department of Urology University of ThessalySchool of Health SciencesFaculty of MedicineUniversity Hospital of LarissaLarissa 41110Greece Division of Hematology and Medical Oncology Department of MedicineWeill Cornell MedicineNew YorkNY 10065USA Department of Urology Aberdeen Royal InfirmaryAberdeen AB252ZNUK

Dear Editor,Clear cell renal cell carcinoma(ccRCC)is a highly vascular *** surrogate markers that may reflect the neovasculature burden of ccRCC,prostate specific membrane antigen(PSMA)has emerged as a promising one,by virtue of its ability to be measured either immunohistochemically and transcriptionally or on positron emission tomography(PET)imaging[1,2].While the relationship between PSMA and neoangiogenesis in ccRCC is well established,the potential association between PSMA and the immune landscape of ccRCC is much less understood.

关键词： PSMA carcinoma cell