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This article investigates the application of deep learning (DL) to the fusion of omnidirectional (O-D) infrared (IR) sensors and O-D visual sensors to improve the intelligent perception of autonomous robotic systems. Recent techniques primarily focus on O-D and conventional visual sensors for applications in localization, mapping, and tracking. The robotic vision systems have not sufficiently utilized the combination of O-D IR and O-D visual sensors, coupled with DL, for the extraction of vegetation material. We will be showing the contradiction between current approaches and our deep vegetation learning sensor fusion. This article introduces two architectures: 1) the application of two autoencoders feeding into a four-layer convolutional neural network (CNN) and 2) two deep CNN feature extractors feeding a deep CNN fusion network (DeepFuseNet) for the fusion of O-D IR and O-D visual sensors to better address the number of false detects inherent in indices-based spectral decomposition. We compare our DL results to our previous work with normalized difference vegetation index (NDVI) and IR region-based spectral fusion, and to traditional machine learning approaches. This work proves that the fusion of the O-D IR and O-D visual streams utilizing our DeepFuseNet DL approach outperforms both the previous NVDI fused with far-IR region segmentation and traditional machine learning approaches. Experimental results of our method validate a 92% reduction in false detects compared to traditional indices-based detection. This article contributes a novel method for the fusion of O-D visual and O-D IR sensors using two CNN feature extractors feeding into a deep CNN (DeepFuseNet).

In the context of vegetation detection, the fusion of omnidirectional (O-D) infrared (IR) and color vision sensors may increase the level of vegetation perception for unmanned robotic platforms. Current approaches are primarily focused on O-D color vision for localization, mapping, and tracking. A literature search found no significant research in our area of interest. The fusion of O-D IR and O-D color vision sensors for the extraction of feature material type has not been adequately addressed. We will look at augmenting indices-based spectral decomposition with IR region-based spectral decomposition to address the number of false detects inherent in indices-based spectral decomposition alone. Our work shows that the fusion of the normalized difference vegetation index (NDVI) from the O-D color camera fused with the IR thresholded signature region associated with the vegetation region minimizes the number of false detects seen with NDVI alone. The contribution of this paper is the demonstration of a new technique, thresholded region fusion technique for the fusion of O-D IR and O-D color. We also look at the Kinect vision sensor fused with the O-D IR camera. Our experimental validation demonstrates a 64% reduction in false detects in our method compared to classical indices-based detection.

A distinctive type of artificial port structure has been found in Africa proconsularis, but not elsewhere in the Mediterranean. This structure is identified here as a ‘jetty with platform’, due to its main components: a straight jetty extending from the shoreline and a large platform attached to the outer end of the jetty. The article considers the chronological, environmental, and technological factors that may be responsible for the construction of this type of jetty, which is found at Acholla, Gigthis, Leptiminus, Ras Segala, and possibly Lepcis Magna. Un type particulier de port artificiel, inconnu en Méditerranée, a été trouvé en Afrique proconsulaire. Cette structure est identifiée ici comme une « jetée avec plate-forme » en raison de ses principales composantes : une jetée droite, partant du rivage, terminée par une grande plate-forme fixée à son extrémité extérieure. L’article examine les facteurs chronologiques, environnementaux et technologiques ayant pu influer sur la construction de ce type de jetée, présentes à Acholla, Gigthis, Leptiminus, Ras Segala, et peut-être Leptis Magna.

[EN] This article argues that a holistic approach to documenting and understanding the physical evidence for individual cities would enhance our ability to address major questions about urbanisation, urbanism, cultural identities and economic processes. At the same time we suggest that providing more comprehensive data-sets concerning Greek cities would represent an important contribution to cross-cultural studies of urban development and urbanism, which have often overlooked relevant evidence from Classical Greece. As an example of the approach we are advocating, we offer detailed discussion of data from the Archaic and Classical city of Olynthos, in the Halkidiki. Six seasons of fieldwork here by the Olynthos Project, together with legacy data from earlier projects by the American School of Classical Studies at Athens and by the Greek Archaeological Service, combine to make this one of the best-documented urban centres surviving from the Greek world. We suggest that the material from the site offers the potential to build up a detailed ‘urban profile’, consisting of an overview of the early development of the community as well as an in-depth picture of the organisation of the Classical settlement. Some aspects of the urban infrastructure can also be quantified, allowing a new assessment of (for example) its demography. This article offers a sample of the kinds of data available and the sorts of questions that can be addressed in constructing such a profile, based on a brief summary of the interim results of fieldwork and data analysis carried out by the Olynthos Project, with a focus on research undertaken during the 2017, 2018 and 2019 seasons., [EL] Το άρθρο υποστηρίζει ότι μια ολιστική προσέγγιση στην τεκμηρίωση και κατανόηση των υλικών καταλοίπων σε επίπεδο πόλεων θα μας βοηθούσε στην προσπάθειά μας να απαντήσουμε σημαντικά ερωτήματα σχετικά με τη διαδικασία της αστικοποίησης, τον αστικό τρόπο ζωής, τις πολιτισμικές ταυτότητες και τις οικονομικές διεργασίες στον αρχαίο κόσμο. Ταυτόχρονα θεωρούμε ότι η συγκρότηση πιο περιεκτικών συνόλων από δεδομένα που αφορούν αρχαίες ελληνικές πόλεις θα προσέφερε σημαντικά και στη διαπολιτισμική μελέτη της αστικής εξέλιξης και του αστικού τρόπου ζωής, η οποία έχει συχνά αγνοήσει τα σχετικά στοιχεία από την κλασική Ελλάδα. Ως παράδειγμα για την προσέγγιση που προτείνουμε προσφέρουμε μιαν αναλυτική συζήτηση των δεδομένων από την αρχαϊκή και κλασική πόλη της Ολύνθου στη Χαλκιδική. Ο συνδυασμός έξι περιόδων έρευνας πεδίου από το Πρόγραμμα της Ολύνθου και στοιχείων από τα αρχεία παλαιότερων προγραμμάτων της Αμερικανικής Σχολής Κλασικών Σπουδών στην Αθήνα και της Ελληνικής Αρχαιολογικής Υπηρεσίας καθιστά την Όλυνθο ένα από τα καλύτερα τεκμηριωμένα αστικά κέντρα του αρχαίου ελληνικού κόσμου που έχουν διασωθεί. Υποστηρίζουμε ότι το υλικό από τη θέση μάς δίνει τη δυνατότητα να σκιαγραφήσουμε ένα λεπτομερές «αστικό προφίλ», το οποίο αποτελείται από μια επισκόπηση της πρώιμης εξέλιξης της κοινότητας καθώς και μια σε βάθος απεικόνιση της οργάνωσης του οικισμού της κλασικής περιόδου. Η δυνατότητα ποσοτικοποίησης κάποιων παραμέτρων της αστικής υποδομής μάς επιτρέπει να προβούμε σε νέες εκτιμήσεις, για παράδειγμα σχετικά με τη δημογραφία. Το άρθρο προσφέρει ένα δείγμα του τύπου των διαθέσιμων δεδομένων και του είδους των ερωτημάτων που μπορεί να τεθούν στη σκιαγράφηση ενός τέτοιου προφίλ, βασισμένο σε μια περίληψη των προσωρινών αποτελεσμάτων από τις εργασίες πεδίου και τις αναλύσεις των δεδομένων που διενήργησε το Πρόγραμμα της Ολύνθου και με έμφαση στην έρευνα που διεξήχθη κατά το 2017, το 2018 και το 2019.

In this article, the authors explore patterns in regional activity in Messenia, the southwest corner of the Greek Peloponnese, from the Geometric to the end of the Late Roman period (ca. eighth century B.C. to seventh cen-tury A.D.). The analysis is based on extant historical evidence, the campaigns of the Minnesota Messenia Expedition, and—above all—the results of the Pylos Regional Archaeological Project. These three data sets have been integrated, as far as possible, in order to trace long-term changes in the region and to provide a foundation for further work in this still underexplored portion of Greece's historical landscape.

This study examines six texts concerned with farming in Roman North Africa in order to assess ancient attitudes toward the rural landscape. Each text portrays an individual "bonus agricola ", commemorated for his or her agricultural activities. While the "bonus agricola" is a familiar figure in Latin literature, an emphasis on investment distinguishes "good farmers" in North Africa from those in Italy, and it is suggested here that the different attitude regarding investment indicates the re-formulation of a Roman concept in African terms. Additionally, these six texts provide literary evidence for the phenomenon of investment in Roman North Africa which several archaeological field survey projects in this region have recently documented., Cette étude examine six textes concernant l'agriculture dans l'Afrique romaine, soulignant les idées des Anciens sur les paysages ruraux. Chaque texte présente un "bonus agricola », personnage célébré pour ses activités agricoles. Bien qu'il s'agisse d'une figure bien connue de la littérature latine, l'accent mis sur leur rôle foncier distingue les « boni agricolae » d'Afrique du Nord de ceux d'Italie, et il est suggéré ici que cette différence d'attitude révèle l'adaptation d'un concept romain en termes africains. De plus, ces six textes apportent des preuves littéraires du phénomène d'investissement foncier en Afrique romaine, récemment documenté par plusieurs prospections archéologiques., Stone David. Culture and Investment in the Rural Landscape : the North African bonus agricola. In: Antiquités africaines, 34,1998. pp. 103-113.

A linear programming model is used to measure the rate of inflation in the food component of the consumer price index A diet model to minimize the cost of a diet subject to constraints on nutritive requirements, variety, pal-atabihty, and menu-function is constructed and the rates of increase in a strict minimum cost model and an expanded constraint model are measured for the period 1980-87 Consistent with the consumer utility literature, it is found that the current Laspeyres index approach to measuring the cost of living in fact provides an upper limit on true cost of living increases Results also show that the cost of maintaining a minimum level of subsistence increases more rapidly than the cost of a more palatable diet Finally, the results show that in fact there is very little room for substitution among food items within a reasonable diet model