scholarly journals DATA FUSION FOR DRAWING AND ANALYSIS OF AN ANCIENT ROMAN BOAT IN HERCULANEUM

2019 ◽  
Vol XLII-2/W17 ◽  
pp. 77-83
Author(s):  
A. Bosco ◽  
E. Canna ◽  
L. Carpentiero ◽  
A. D’Andrea ◽  
F. Forte ◽  
...  
Keyword(s):  
Data Fusion ◽  
Low Cost ◽  
Laser Scanner ◽  
Collaborative Project ◽  
Survey Techniques ◽  
Mediterranean Studies ◽  
Accurate Definition ◽  
Ancient City ◽  
Definition Of ◽  
The University

Abstract. Advanced and low-cost 3D technologies (Laser Scanner and Digital Photogrammetry) are nowadays widely used in several fields such as Cultural Heritage and Archaeology. In this paper a collaborative project between the Archaeological Park of Herculaneum, the CISA (Interdepartmental Services Centre for Archaeology) and the DAAM (Department of Asia, Africa and Mediterranean Studies) of the University “L’Orientale” of Naples is presented. Aim of the project was to find a solution to study the Roman boat discovered in the ancient city of Herculaneum and destroyed by the eruption of Vesuvius in 79 A.D., without altering its state of preservation. Different digital survey techniques were employed to compare different types of sensors. The goal was to obtain an accurate definition of the construction characteristics of the boat thanks to the data fusion.

scholarly journals Effects of soil settlement and deformed geometry on a historical structure

2013 ◽  
Vol 1 (5) ◽  
pp. 5911-5934 ◽  
Author(s):  
Y. Yardım ◽  
E. Mustafaraj
Keyword(s):  
Laser Scanning ◽  
Laser Scanner ◽  
Repair Process ◽  
Stress Concentrations ◽  
Historical Structures ◽  
Damage Repair ◽  
Accurate Definition ◽  
Earthquake Vulnerability ◽  
Soil Settlement ◽  
Definition Of

Abstract. Protecting the historic character of a valued structure during the assessment and damage repair process is a very challenging task for many engineers. Heritage protection is complicated by a lack of design details and restrictions on sample extraction needed to obtain accurate material properties and limited studies on the restoration of certain types of historical structures. This study aims to assess the effects of soil settlement on a structure's stress concentrations and the value of laser scanning techniques on structure analysis in obtaining correct data of settlement vs. deformation. Terrestrial laser scanner (TLS) data are used to analyse the 500 yr-old historical structure of Naziresha's Mosque. The obtained TLS data allow an accurate definition of the imperfect geometry patterns lying on every side of the structure. The soil profile and general crack formation together with TLS measurement proves that the structure deformed toward the south façade, where a railway and motorway are also located. Stress concentration and mode period results have a considerable difference, which highlights earthquake vulnerability and failure mechanisms and changes the strategy of possible retrofitting.

scholarly journals THE USE OF THE UAV IMAGES FOR THE BUILDING 3D MODEL GENERATION

2018 ◽  
Vol XLII-4/W8 ◽  
pp. 217-223 ◽  
Author(s):  
G. Vacca ◽  
G. Furfaro ◽  
A. Dessì
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
3D Model ◽  
Low Cost ◽  
Laser Scanner ◽  
3D Models ◽  
Digital Cameras ◽  
Dense Matching ◽  
Uav Images ◽  
The University

<p><strong>Abstract.</strong> The growing interest in recent years in Unmanned Aerial Vehicles (UAVs) by the scientific community, software developers, and geomatics professionals, has led these systems to be used more and more widely, in different fields of engineering and architecture. This is thanks, above all, to their flexibility of use and low cost compared to traditional photogrammetric flights using expensive metric digital cameras or LiDAR sensors. In recent years, UAVs have also been used in the field of monitoring and inspection of public or private buildings that are remarkable in terms of size and architecture. This is mainly due to the focus a sustainability and resource efficiency in the building and infrastructure sector, which aims to extend their lifetimes. Through the use of remote checking using UAVs, the monitoring and inspection of buildings can be brought to a new level of quality and saving.</p><p> This paper focuses on the processing and study of 3D models obtained from images captured by an UAV. In particular, the authors wanted to study the accuracy gains achieved in the building 3D model obtained with both nadir and oblique UAV flights. The images from the flights were processed using Structure-for Motion-based approach for point cloud generation using dense image-matching algorithms implemented in an open source software. We used the open source software VisualSfM, developed by Chanchang Wu in collaboration with the University of Washington and Google. The dense matching plug-in integrated in its interface, PMVS/CMVS, made by Yasutaka Furukawa, was employed to generate the dense cloud. The achieved results were compare with those gained by Photoscan software by Agisoft and with 3D model from the Terrestrial Laser Scanner (TLS) survey.</p>

scholarly journals 3D MODELLING OF THE MAMARI TABLET FROM THE RONGORONGO CORPUS: ACQUISITION, PROCESSING ISSUES, AND OUTCOMES

2019 ◽  
Vol XLII-2/W18 ◽  
pp. 85-89
Author(s):  
L. Lastilla ◽  
R. Ravanelli ◽  
M. Valério ◽  
S. Ferrara
Keyword(s):  
Laser Scanner ◽  
3D Models ◽  
3D Modelling ◽  
Depth Of Field ◽  
Optical Parameters ◽  
Complex Objects ◽  
The Pacific ◽  
Museum Archives ◽  
Definition Of ◽  
The University

Abstract. Rongorongo is an undeciphered script inscribed on wooden objects from Easter Island (Rapa Nui) in the Pacific Ocean. The existing editions of the inscriptions, and their widespread locations in museums and archives all over the world today constitute a serious obstacle to any objective paleographical assessment. Thus, with a view to a potential decipherment, creating 3D models of the available corpus is of crucial importance, and one of the objectives of the ERC INSCRIBE project, based at the University of Bologna with Professor S. Ferrara as Principal Investigator. In this preliminary work, we present the results of the 3D digitization of the Mamari tablet, one of the longest inscriptions in Rongorongo, housed in the Museum Archives of the Congregazione dei Sacri Cuori di Ges`u e Maria in Rome. The tablet is made of wood, with a shiny reflecting surface, characterized by a mainly dark texture. The 3D modelling was carried out with the ScanRider 1.2 laser scanner manufactured by VGER, based on Structured Light technology, taking care to ensure the legibility of each sign while preserving the overall shape of the object as precisely as possible. To overcome the difficulties inherent in the object’s complex fabric, the Mamari tablet was acquired in separate sections (joined together during processing through specific markers), thus managing to optimize the optical parameters of the laser scanner, such as the exposure of the camera and the depth of field of the projector. Furthermore, an evaluation of the 3D reconstruction precision was also carried out, highlighting a precision of few hundredths of millimeters, in agreement with the claimed nominal standard deviation. In addition to the 3D model produced, one of the main results of this endeavor was the definition of a successful method to scan such complex objects, which will be replicated to finalize the complete 3D modelling of the whole Rongorongo corpus of inscriptions.

scholarly journals Effects of soil settlement and deformed geometry on a historical structure

2015 ◽  
Vol 15 (5) ◽  
pp. 1051-1059 ◽  
Author(s):  
Y. Yardım ◽  
E. Mustafaraj
Keyword(s):  
Laser Scanning ◽  
Laser Scanner ◽  
Repair Process ◽  
Stress Concentrations ◽  
Historical Structures ◽  
Damage Repair ◽  
Accurate Definition ◽  
Earthquake Vulnerability ◽  
Soil Settlement ◽  
Definition Of

Abstract. Protecting the historical character of a valued structure during the assessment and damage repair process is a very challenging task for many engineers. Heritage protection is complicated by a lack of design details and restrictions on sample extraction needed to obtain accurate material properties and limited studies on the restoration of certain types of historical structures. This study aims to assess the effects of soil settlement on a structure's stress concentrations and the value of laser scanning techniques on structure analysis in obtaining correct data of settlement vs. deformation. Terrestrial laser scanner (TLS) data are used to analyse the 500-year-old historical structure of Naziresha's Mosque. The obtained TLS data allow an accurate definition of the imperfect geometry patterns lying on every side of the structure. The soil profile and general crack formation together with TLS measurement proves that the structure deformed toward the south façade, where a railway and motorway are also located. Stress concentration and mode period results have a considerable difference, which highlights earthquake vulnerability and failure mechanisms and changes the strategy of possible retrofitting.

Spectraplot: A PC-based spectrum translation and display program

1988 ◽  
Vol 46 ◽  
pp. 918-919
Author(s):  
H. O. Colijn
Keyword(s):  
Low Cost ◽  
Transfer Program ◽  
File Transfer ◽  
Transfer Data ◽  
Error Checking ◽  
Data Files ◽  
The University

Many labs today wish to transfer data between their EDS systems and their existing PCs and minicomputers. Our lab has implemented SpectraPlot, a low- cost PC-based system to allow offline examination and plotting of spectra. We adopted this system in order to make more efficient use of our microscopes and EDS consoles, to provide hardcopy output for an older EDS system, and to allow students to access their data after leaving the university.As shown in Fig. 1, we have three EDS systems (one of which is located in another building) which can store data on 8 inch RT-11 floppy disks. We transfer data from these systems to a DEC MINC computer using “SneakerNet”, which consists of putting on a pair of sneakers and running down the hall. We then use the Hermit file transfer program to download the data files with error checking from the MINC to the PC.

Resolution and measurement in the scanning electron microscope

1987 ◽  
Vol 45 ◽  
pp. 534-537 ◽  
Author(s):  
Michael T. Postek
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Engineering Design ◽  
Resolving Power ◽  
Practical Applications ◽  
Instrument Resolution ◽  
Accurate Definition ◽  
Definition Of ◽  
Scanning Electron ◽  
Better Than

The term ultimate resolution or resolving power is the very best performance that can be obtained from a scanning electron microscope (SEM) given the optimum instrumental conditions and sample. However, as it relates to SEM users, the conventional definitions of this figure are ambiguous. The numbers quoted for the resolution of an instrument are not only theoretically derived, but are also verified through the direct measurement of images on micrographs. However, the samples commonly used for this purpose are specifically optimized for the measurement of instrument resolution and are most often not typical of the sample used in practical applications.SEM RESOLUTION. Some instruments resolve better than others either due to engineering design or other reasons. There is no definitively accurate definition of how to quantify instrument resolution and its measurement in the SEM.

Principles of economic security management of institutions of higher education

2019 ◽  
pp. 174-181
Author(s):  
Nataliia Tsymbalenko
Keyword(s):  
Management System ◽  
Semantic Analysis ◽  
Security Management ◽  
Economic Security ◽  
Theoretical Concepts ◽  
Economic Role ◽  
Social Mission ◽  
Analysis And Synthesis ◽  
Definition Of ◽  
The University

The subject of research-theoretical concepts of economic security managementof universities. The purpose of the article. The study of the essence of the economicsecurity management system of the university and the definition of its main tasks,the formulation of principles of economic security management of the university.Methodology. The dialectical method, methods of analysis and synthesis, methodsof structural-logical and semantic analysis were used to study and summarizescientific papers on the research topic. The results of the work. The essence of theuniversity’s economic security management system has been reviewed. The maintasks of the control system have been identified. A definition of the university’seconomic security system has been proposed. Principles of management of economicsecurity of the university have been formulated. These are: scientific andorganizational and social principles. Conclusions. The proposed principles allow totake into account the economic role and social mission of universities in managingeconomic security.

Problems in English Communicating Skills for Learners of English

2018 ◽  
Vol 9 (07) ◽  
pp. 20484-20491
Author(s):  
Dr. Ishag Adam Hassan Ahmed
Keyword(s):  
Reading Comprehension ◽  
English Language ◽  
Communicative Competence ◽  
Daily Practice ◽  
Small Component ◽  
Curriculum Review ◽  
Comprehension Skills ◽  
Definition Of ◽  
The University ◽  
Reading Comprehension Skills

This paper is devoted to presenting the methods in English communicating skills for Learners of English in general and the problems specific to University of Bahri. English language major’s graduates then; it discusses the notion of communicative competence, and defines strategic competence. It also briefly deals with the various definitions of communication strategies and taxonomies of conversation strategies. Also, I give brief definition of the word conversation, that is the act of talking together or exchange ideas, opinions, skills, and information. As accustomed, speaking is natural and automatic but communication is an art which must be learned and practiced. Also the aim of this paper is to present you with suitable suggestions about how you can solve problems while reading English? In order to comply with this objective: we considered two variables. The first one is that within our daily practice at the university we have students with different abilities while reading English. Therefore, we need to help them increase the ability in reading comprehension. However, we don’t have enough teachers and needed resources to supply them with the help they need. The second variable is related to the fact that at University there are different centers where the students’ skills can improve and their reading comprehension skills deficiencies could be overcome by getting help from the teachers. This study is small component of a larger curriculum review exercise. The findings of study in general suggest that both students and English language lecturers were in agreement that Sudanese students had a problem in writing and speaking English and due to that the conversational problems are raised.      Finally, the paper concludes by representing the pedagogical implications of conversation strategies.

Dasein, personeidad, intersubjetividad y persona-núcleo. El sujeto relacional después de Heidegger, en Zubiri, Apel y Polo. Dasein, Personhood, Inter-subjectivity and Nucleus-Person. The Relational Subject after Heidegger, in Zubiri, Apel and Polo

2017 ◽  
Author(s):  
Carlos Ortiz de Landázuri
Keyword(s):  
Heuristic Strategies ◽  
Accurate Definition ◽  
Being There ◽  
Definition Of

Heidegger, Zubiri, Apel y Polo habrían propuesto una definición más correcta de las respectivas nociones de sujeto relacional humano, a saber: “Dasein” o “ser-ahí”; “personeidad” o “esencia abierta”; “intersubjetividad” o “la llamada por parte de los entes a diversos interlocutores”; y, finalmente, “persona-núcleo” o “agente mediador entre los entes y el ser”. Se pretendía así evitar una vuelta a las paradojas del “sujeto transcendental” en Kant, del “yo absoluto” en Hegel o del “sujeto fenomenológico” en Husserl. Sin embargo en cada caso se siguieron estrategias heurísticas específicamente distintas a la hora de conceptualizar dicho sujeto relacional: Heidegger propuso una superación de la noción de “sujeto fenomenológico” en Husserl; Zubiri, en cambio, defendería una recuperación de la noción de “sujeto fenomenológico” en Husserl; por su parte, Apel propondría una reformulación semióticamente transformada del “Dasein” heideggeriano; finalmente, Polo propondría una reformulación gnoseológica de la noción de “Dasein” heideggeriano.Heidegger, Zubiri, Apel, and Polo have proposed a more accurate definition of the respective notions of human relational subject: “Dasein” or “being-there”; “Personhood” or “open essence”; “inter-subjectivity” or “entities’ appeal to diverse interlocutors”; and, finally, “nucleus-person” or “mediator between entities and being”. The aim is to avoid a return to Kant’s transcendental subject paradoxes and Hegel’s “absolute I” or Husserl´s “fenomenological subject”. But in each case specifically different heuristic strategies were followed when conceptualizing said relational subject: Heidegger proposed overcoming the notion of “phenomenological subject” in Husserl; Zubiri, however, defend the recovery of the notion of “phenomenological subject” in Husserl; meanwhile, Apel propose a transformed semiotically reformulation of Heidegger’s “Dasein”; finally, Polo propose a reformulation of the epistemological notion of Heidegger’s “Dasein”.

The Concept of Nontraditional Student

2017 ◽  
Vol 28 (1) ◽  
pp. 40-60
Author(s):  
Treinienė Daiva
Keyword(s):  
Nontraditional Students ◽  
Social Roles ◽  
Nontraditional Student ◽  
Full Time ◽  
Older Students ◽  
Learning Differences ◽  
Status Characteristics ◽  
Part Time ◽  
Definition Of ◽  
The University

Abstract Nontraditional student is understood as one of the older students enrolled in formal or informal studies. In the literature, there is no detailed generalisation of nontraditional student. This article aims to reveal the concept of this particular group of students. Analysing the definition of nontraditional students, researchers identify the main criteria that allow to provide a more comprehensive concept of the nontraditional student. The main one is the age of these atypical students coming to study at the university, their selected form of studies, adult social roles status characteristics, such as family, parenting and financial independence as well as the nature of work. The described features of the nontraditional student demonstrate how the unconventional nontraditional student is different from the traditional one, which features are characteristic for them and how they reflect the nontraditional student’s maturity and experience in comparison with younger, traditional students. Key features - independence, internal motivation, experience, responsibility, determination. They allow nontraditional students to pursue their life goals, learn and move towards their set goals. University student identity is determined on the basis of the three positions: on the age suitability by social norms, the learning outcomes incorporated with age, on the creation of student’s ideal image. There are four students’ biographical profiles distinguished: wandering type, seeking a degree, intergrative and emancipatory type. They allow to see the biographical origin of nontraditional students, their social status as well as educational features. Biographical profiles presented allow to comprise the nontraditional student’s portrait of different countries. Traditional and nontraditional students’ learning differences are revealed by analysing their need for knowledge, independence, experience, skill to learn, orientation and motivation aspects. To sum up, the analysis of the scientific literature can formulate the concept of the nontraditional student. Nontraditional student refers to the category of 20-65 years of age who enrolls into higher education studies in a nontraditional way, is financially independent, with several social roles of life, studying full-time or part-time, and working full-time or part-time, or not working at all.

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