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摘要: Nowadays, computational thinking is considered to be the thinking ability that information talents must possess in the 21st century. This paper discusses how to improve the effect of Scratch programming teaching and cultivate learners' computational thinking based on the scaffolding teaching theory, thus proposing a Scratch scaffolding teaching model for the cultivation of computational thinking. Taking the game programming of "Penguin Skiing" as an example, the teacher creates learning situatio关键词: Scaffolding teaching; Scratch; Computational thinking.
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摘要: The present study was aimed to prepare Calendula flower extract loaded collagen film as a safe and effective wound dressing. Collagen film was prepared by solvent casting method and characterized for physicochemical properties like water absorption capacity, total phenolic content, total flavonoid content, antioxidant activity, infrared spectra, biodegradation, moisture content, differential scanning calorimetry, and sterility. The triple helical structure of collagen in the formulation was conf关键词: Collagen film;Calendula officinalis; L.;Marigold;Wound;MTT;Scratch assay;CFE;DPPH;GAE;kGy;MTT;QUE;LOD
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摘要: In the present work, scratch tests were conducted to study the surface deformation behaviour of additively manufactured continuous carbon fibre (CF) reinforced polyamide 6 (PA6) composites. The effect of fibre orientation was investigated by considering three scratch directions, i.e. normal, transverse, and longitudinal to the fibres. Different scratch deformation modes were identified, namely mild abrasion, fibre breakage and fibre removal, depending on the normal load. The critical loads for t关键词: Continuous carbon fibre reinforced polymer composites;Scratch;Friction and wear;C. Finite element analysis (FEA);E. Additive manufacturing
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摘要: We conducted a training experimentation on computer coding whose aim is to probe ICT skills enhancement of pre-service teachers in Morocco. For that, we have developed and implemented training sessions using a visual programming tool (Scratch) targeting 63 prospective teachers at the Faculty of Educational Sciences (FSE) and the Regional Center for Education and Training Professions (CRMEF) in Nador, Morocco. During these sessions, trainees were introduced to algorithmic thinking where they impl关键词: ICT;Teacher Training;Computer Science in Morocco;Informatics teaching;block-based programming environments;Scratch.
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摘要: Aiming at the problems of difficulty and low detection accuracy in manual detection of scratches on the inner surface of ultra-long energy storage gas cylinders in the aerospace industry, a detection system for scratches on the inner surface of ultra-long gas cylinders based on VGG-16 neural network is designed. In this paper, VGG-16 recognition model is innovatively proposed to apply to the application of scratch detection. Compared with the ordinary detection model to detect the required targe关键词: scratch test;image processing;neural network;linear array camera.
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Research Article
Miere (Groza) Florina;Teușdea Alin Cristian;Laslo Vasile;Cavalu Simona;Fritea Luminița;Dobjanschi Luciana;Zdrinca Mihaela;Zdrinca Marcel;Ganea Mariana;Pașc Priscilla;Memete Adriana Ramona;Antonescu Angela;Vlad Andreea Margareta;Vicas Simona Ioana;
Applied SciencesVolume 11, Issue 23, 2021, PP 11526-11526
摘要: The healing of skin wounds remains an important concern in medicine, especially in chronic wounds caused by various diseases such as diabetes. Using herbs or herbal products to heal skin wounds is a therapeutic challenge for traditional medicine. In this context, the main aim of our work was to highlight the in vitro healing potential of Stellaria media (L.) Vill. (SM) extract using the scratch assay on normal human dermal fibroblasts (NHDF). The ability to stimulate cell migration and prolifera关键词: Stellaria media (L.) Vill;scratch assay;fibroblasts;wound healing;antioxidant capacity;phenols and flavonoids content;antimicrobial activity
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摘要: The purpose of this thesis is to propose a method to cluster Scratch projects according to their similarity. Scratch is a web-based visual programming environment, which supports young programmers in their first steps in coding. Due to the widespread use of Scratch among programming beginners, Scratch has recently received significant attention from the computing education research community. Datasets composed of projects scraped from the public Scratch projects repository have been used to rese关键词: Scratch; JSON; Scrape; Parse; Similarity Calculation; Simhash; K-means++; Cluster; Block; Script; Project.
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Journal
Mavlyuda Xodjayeva;Dimen L.;Borsan T.;Gaban Lucian;Surkov K.A.;Surkov D.A.;Chetirko Yu.M.;Xodjayeva Mavluda;Xodjayeva Mavlyuda;Jumayev Turdali;Dadamuhamedov Alimjon;Saydakhmedova Barno;Irgashevich Alimjon Dadamuhamedov;Khodjaeva M.;Dadamukhamedov AI;Vayk Allen;Mavlyuda X.;Rustam K.;Rano D.;Dadamuhamedov A.;Alisher M.;Turdali S. J.;Dadamuhamedov I. A.;Alimjon D.;Zokirjon O'g’li U. S.;Turdali J.;Xodjayeva M.;Dadamuxamedov A.;Dadamukhamedov A.;Artikova M.;Patulloev;Kabulov R.;Djuraeva R.;Mukhammadiev A.;Sabirovna K. M.;Bozorov A.;Kamil Makku;Mary Slater;
摘要: The article is devoted to the use of modern information and communication technologies in organizing virtual tours to places of interest and monuments, which describes the problems of developing virtual tourism. Also included are software for developing virtual travel experiences such as 3ds Max, Lumion 6.0, Adobe Photoshop, Adobe Premiere Pro and Adobe After Effect. The software complex was developed on the example of the complex "Shaikhovanda Tohur" which is located in the city of Tashkent.关键词: IT;Education;Programming;Development;Scratch;Code.Org;3ds Max;Lumion 6.0;Adobe Photoshop;Adobe Premiere Pro;Adobe After Effect. Islam;Digital Technology;Lan;Information And Communication Technology Education
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Journal
Razafindrazaka H;Redl S;Aouchiche F;Grosleron S;NazalTraissac E M;Rispal P;Imbert Y;
La Revue de medecine interneVolume 42, Issue 12, 2021, PP 875-880
摘要: Cat scratch disease caused by Bartonella henselae with bone involvement is a rare presentation.;We report a case of disseminated bartonellosis with multifocal osteomyelitis and multiple visceral involvement in an immunocompetent adult. Diagnostic confirmation was obtained by PCR on lymphadenopathy. In addition to our observation, 31 cases of bartonellosis with bone involvement were reported in the literature. Diagnosis is based on a combination of history, serology and PCR performed on tissue. T关键词: B. henselae;Bone;Cat scratch disease;Granulomatose;Granulomatosis;Maladie des griffes du chat;Os;Osteomyelitis;Ostéomyélite
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Journal
摘要: Polymicrobial biofilm leads to wound healing delay. We set up an in vitro co-culture model of single- and triple-species biofilms of Staphylococcus aureus, Pseudomonas aeruginosa and Enterococcus faecalis with dermal fibroblast to assess the fibroblast response against to the different biofilms. Scratch and viability assays and biofilm cell quantifications were performed by WST-1, CLSM and plating method, respectively. Quorum sensing-related gene expression levels in P. aeruginosa and E. faecali关键词: Cytokine;E. faecalis;P. aeruginosa;Polymicrobial biofilm;S. aureus;Scratch closure
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Journal
摘要: The prevalence of infertility is increasing worldwide and the treatment is one of the important issues.;This study aimed to evaluate the effect of local endometrial scratching on pregnancy outcomes in women with previous failure of intrauterine insemination.;This non-randomized clinical trial study was performed on 336 women referred to the infertility clinic of Ali ebn-e Abitaleb Hospital of Zahedan (between May and November 2019). Women were divided into two groups: endometrial scratch as case关键词: Endometrial;Insemination.;Scratch;Infertility
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Journal
Report
摘要: We studied retrospectively 651 PCR-confirmed Bartonella infections diagnosed at the French reference center for bartonellosis from 2014 to 2019. The most common form was cat-scratch disease (89%) followed by endocarditis (9%). Disseminated forms (2%) mainly presented as bacillary angiomatosis or peliosis hepatis in solid organ transplant recipients.关键词: Bacillary angiomatosis;Bartonella sp.;Cat scratch disease;Diagnosis;Immunocompromised;Peliosis hepatis
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Research Article
摘要: Life-long learning, including development of professional competence, is an essential paradigm of the 21st century. The goal of this research is to analyse the quality and efficiency of the educators’ professional competence enhancement programme dubbed “Fundamentals of Programming in Visual Programming Environment Scratch” in accordance with the following criteria: organization, lecturer’s competence, quality of handouts, content, expectations, usefulness, applicability, and the overall assessm关键词: Digital competence; Educators’ professional competence; Environment; Fundamentals of programming; Scratch. programming
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Journal
Rong Di; Anne F. Murray; Jia Xiong; Debora Esposito; Slavko Komarnytsky; Thomas J. Gianfagna; John P. Munafo;
Journal of EthnopharmacologyVolume 258, Issue prepublish, 2020, PP 112766-112766
摘要: AbstractEthnopharmacological relevanceThe bulbs and flowers of plants from the Lilium genus have historically been used in Asian and Greco-Roman medicine to treat burns and promote skin healing.Aim of the studyTo evaluate a steroidal glycoalkaloid isolated from Easter lily bulbs for its potential wound healing promoting properties.Materials and methodsA lily-derived steroidal glycoalkaloid (LSGA), (22R, 25R)-spirosol-5-en-3β-yl O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranosyl-(1→4)-β-D-glucopyrano关键词: Steroidal glycoalkaloid;Lilium longiflorum Thunb.;Scratch migration assay;Gene expression;Easter lily;Human dermal fibroblast cells
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Journal
摘要: Aim: This study investigated the effect of curcumin, from Curcuma longa, on the invasion of U87 glioma cell line spheres in 3D collagen model. Furthermore, this study investigated the anti-migration effects of curcumin on the migration of the same cell line in scratch assay. Place and Duration of Study: Department of Pharmacology, School of Medicine, The University of Jordan, Amman, Jordan, between March 2019 and May 2019. Methods: 3D invasion assay and 2D migration assays were used to fulfill t关键词: Cell lines; 3-D collagen model; Scratch assay; Glioma; Curcumin.
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Research Article
Alessia Fazio; Chiara La Torre; Maria Cristina Caroleo; Paolino Caputo; Pierluigi Plastina; Erika Cione;
MoleculesVolume 25, Issue 4, 2020, PP 968-968
摘要: Glucans possess a broad spectrum of biological activities. In this context, the present study was performed to isolate glucans from an Italian cultivar of Ziziphus jujuba Mill. at three different harvesting periods, in order to evaluate their effects on wound healing. The dry fruits were subjected to an alkaline extraction and then isolated glucans were purified by dialyzation. The crude and soluble samples were characterized by FT-IR and SEM analyses. Afterwards, total, α- and β-glucan content 关键词: Ziziphus jujuba Mill.; Glucans; Scanning electron microscopy; Keratinocytes; MTT assay; Scratch assay; Wound healing
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Journal
摘要: Computer technology is spreading at an unstoppable pace into every part of human life and work. Today, children are getting familiar with new technologies in a different way than adults, because they are growing up with new challenges. The role of the teacher is to direct students to use information technology creatively and, thus, raise the level of education in general. Informatics is an ideal area through which children can develop the skills necessary for lifelong learning, such as logical, 关键词: Scratch;programming;abstract thinking.
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Journal
Mrđen Toni;Livaja Ivan;Acalin Jerko;
Zbornik radova Veleučilišta u ŠibenikuVolume , Issue 3-4, 2019, PP 115-123
摘要: Računalna tehnologija nezaustavljivom brzinom prodire u svaki djelić ljudskog života i rada. Djeca nove tehnologije primaju na drugačiji način od odraslih, jer odrastaju s novim izazovima. Uloga učitelja je usmjeriti učenike kako kreativno koristiti informacijsku tehnologiju, te njome podignuti razinu obrazovanja u cjelini. Informatika je idealno područje关键词: Scratch;programiranje;apstraktno mišljenje.
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Research Article
摘要: Abstract(#br)Metallic mirrors are now essential components of the (International Thermonuclear Experiment Reactor) ITER plasma diagnostics system. The optical properties of the first mirror (FM) in the hostile ITER environment have adverse effects due to erosion and deposition owing to high energy charge exchange of neutral (CXN) particles, UV, X-ray, and gamma radiation. Molybdenum (Mo) and rhodium (Rh) are attractive metals for the FM(s) as they can withstand the harsh conditions of the plasma关键词: DC magnetron sputtering ;Interlayer ;Mo ;Nb ;Rh ;Scratch test ;Roughness ;Reflectivity ;89.20.-a ;68.55.-a ;82.45.Mp
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César Giovany Pachón Suescún; Javier Orlando Pinzón Arenas; Robinson Jiménez Moreno;
摘要: Failure detection systems have become important not only in production processes, but nowadays there is a need for their implementation in various daily areas, for example, for the detection of physical damages that a car may present in a parking lot, in order to provide to the client with the assurance that their personal property will not be affected inside the lot. This paper presents an algorithm based on convolutional neural networks and a variant of these using regions (CNN and R-CNN), whi关键词: Convolutional neuronal network; RoI; Scratch detection; Quality control.
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摘要: A growing number of countries, in Europe and beyond have established clear policies and frameworks for introducing Computational Thinking and computer programming to young children. Researchers, educators, and key stakeholders believe that these skills should be taught and used in early childhood classrooms to initiate the cognitive development of students at an earlier age. The introduction of CT in the curriculum is creating a strong demand for pre-service development, as many teachers did not关键词: Scratch; Pre-service teachers; Programming; Computational thinking; Preschool education.
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摘要: Evaluation of Computational Thinking through Code Analysis of Elementary School Students' Scratch ProjectsScratch;Dr. Scratch;Computational Thinking;SW education;Code analysis;In order to improve computational thinking, elementary schools have been using 'Scratch' to provide basic programming education. However, the study on evaluation of computational thinking is at an early stage. Therefore, this study evaluated the conceptual level of computational thinking using the scratch code analyzing. F关键词: Scratch;Dr. Scratch;Computational Thinking;SW education;Code analysis
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Journal
Richard Nunes Machado; Vanda Leci Bueno Gautério; Mariana Obiedo Piñeiro; Renata Truquijo Crizel;
摘要: Este trabalho tem o objetivo de refletir sobre como utilizar as Tecnologias Digitais na sala de aula para potencializar o ensinar e o aprender. Um estudo que movimentou o grupo os inquietando sobre qual seria o papel do professor diante desta realidade. Assim, foi realizado uma análise qualitativa de uma oficina em sala de aula, destacando a sua usabilidade técnica e pedagógica do software Scratch. A pesquisa, embasada na perspectiva teórica de Moran (2013), Papert (2007), Prensky (2013), Lorenz关键词: Scratch; Oficina Pedagógica; Matemática; Programação; Situação problema.
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摘要: The objects of investigations were Cr/CrN multi-module coatings deposited using a cathodic arc evaporation method (CAPVD) on HS6-5-2C steel used as a substrates. Analysed coatings possesses seven Cr/CrN modules of fixed thickness each, with various thicknesses of Cr and CrN layers. Aiming for the evaluation of mechanical properties of tested multi-module Cr/CrN coatings, its hardness and Young's modulus were measured, on the basis of which were determined values of H/E and H 3关键词: Thin hard coatings; Physical vapour deposition; PVD; Anti-wear coatings; Multi-layer coatings; Nanoindentation; Adhesion; Scratch test; Fracture toughness; Ball-on-disc test; Hard chromium replacement.
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摘要: Bronze with addition of graphite, produced by powder metallurgy processes are widely used in textile and food industries as bearings and bushes. Addition of graphite serves to reduce sliding contact between machine parts, especially where grease and oil lubricant cannot be used. Sintered bronze-graphite composite with various volume percentage of graphite at different particle size and at varying compaction load was prepared. The surface morphology of the composites was experimented by scanning 关键词: Sintered bronze-graphite composite; Powder metallurgy; Density; Porosity; Hardness; Scratch track width.
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摘要: The purpose of this study is to examine behavioural and learning differences between novice programmers in relation to the use of two different programming environments for novices, Scratch and App Inventor for Android (AIA). Initially, we assumed that due to the known characteristics of the two environments, students would improve their knowledge and behavioural approach towards programming. Given the characteristics of the AIA, we also assumed that students who were in the experimental group (关键词: MIT App Inventor; Scratch; Novice programmers; Secondary education.
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Flaviana dos Santos Silva; Alisandra Cavalcante Fernandes de Almeida; Katia Alexandra Godoi e Silva;
Revista ObservatórioVolume 5, Issue 1, 2019, PP 276-298
摘要: O objetivo deste artigo é analisar a integração do software Scratch para promover o desenvolvimento do pensamento computacional no ensino superior. Para tal, foram explorados os conteúdos da Economia Doméstica e da Educação Financeira como cenário no ensino dos conceitos básicos de Computação, como os algoritmos, a linguagem e arquitetura da programação, atrelados à resolução de problemas do cotidiano, destinados à formação do cidadão. O referencial teórico está articulado com os conceitos das T关键词: Pensamiento computacional; Economía doméstica y financiera; Software Scratch; Tecnologías de Información y Comunicación Digitales (TDIC).
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Research Article
摘要: This study investigated the effect of T6 heat treatment on the microstructure and scratch wear behavior of hypoeutectic Al-12wt.%Si alloy manufactured by extrusion. Microstructural observation identified spherical eutectic Si phases before and after the heat treatment of alloys (F, T6). Phase analysis confirmed Al matrix and Si phase as well as Al2Cu and Al3Ni, Mg2Si in both alloys. In particular, Al2Cu was finer and more evenly distributed in T6 alloy. This resulted in Vickers hardness of T6 al关键词: Al-12wt.%Si alloy; Scratch test; Wear-resistance; T6 heat treatment
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摘要: Analysis of Computational Thinking Level Through the Scratch Project AnalyzationScratch;Dr. Scratch;Computational Thingking;SW education;EPL;As SW education has become essential since 2018 due to the revised curriculum in 2015, researches on SW education are actively being carried out. In order to understand the level of pre-service teachers' computational thinking level, we analyzed a correlation of CT element scores with each year and each grade based on the calculated Scratch project by years关键词: Scratch;Dr. Scratch;Computational Thingking;SW education;EPL
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Journal
摘要: The importance of chronic wound treatment is with the management of the wound bed providing a moist environment to enhance epithelialisation in the wound healing process. The demand for the development of effective wound dressing in a cost effective condition is increasing day by day. On these points in view the present study was focused on to the preparation of the polymeric graft dressings based on chitosan for safer and reliable wound care management. In this regard to prepare chitosan based 关键词: Antimicrobial Activity;Chitooligosaccharides;Chitosan;Freeze Gelation Method;Wound Scratch Assay.
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