165 research outputs found
Book review: living with hacktivism - from conflict to symbiosis by Vasileios Karagiannopoulos
No full textConvictions of politically-motivated hackers - so-called 'hacktivists' - have hit the headlines in recent years. Living with Hacktivism: From Conflict to Symbiosis offers one of the first legal and regulatory analyses of this evolving phenomena. Author Vasileios Karagiannopoulos attentively guides the reader through the shortcomings of the contemporary legislative cybercrime and cyberterrorism landscape, focusing specifically on the USA and UK. Although Leonie Maria Tanczer would have hoped to see a stronger engagement with the work of ‘hackademics’, the publication is an important contribution to the evolving body of cybercrime literature
A kinetic approach for the estimation of intracellular concentrations of nitrosative species in cells challenged by nitric oxide
No full textThesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2013.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Cataloged from student-submitted PDF version of thesis.Includes bibliographical references.by Vasileios Theodoros Dendroulakis.Ph.D
The "new" doctor-nurse game in decentralization: A case study in southern Sweden
No full textABSTRACT Thesis title: The “new” doctor-nurse game in decentralization –A case study in southern Sweden. Course: BUSM18, Degree Project in Managing People, Knowledge & Change, 15 Credits. Seminar date: 03-06-2010 Author: Vasileios Georgakopoulos Supervisor: Sverre Spoelstra Key words: Decision making, decentralization, popular culture, critical thinking communication, teamwork, stress, E.R series, rational-bounded rational-irrational model, ambiguity. Purpose: To explore the nursing decision making in a decentralized area, taking into consideration the nurses’ knowledge and clinical practice. Method: This research is based on a qualitative approach through interviews. The method which is used on my research is the mix of deductive and inductive approach. Furthermore, it is used the popular culture as an interview technique. Theoretical framework: The theoretical framework which I use deals with the nursing recommendation to the doctors which started from the decade of 90’s. Hence, in order to describe this framework I was inspired from the influential historic overview of decision making model Conclusion: Nurses influence the doctors’ decision making process with three models. First the rational model (Step-By-Step), second the bounded rational model (Recognition-Primed Decision) and third the irrational model (Garbage Can). A basic precondition is to work the nurses in a decentralized health system
Dataset of cotton phenology images
No full textThe dataset contains labels about the the phenological stages of cotton at the parcel level, generated by in-situ inspections in the region of Orchomenos, Greece, during the cotton cultivation period of 2021 (May-October). We collected 1,285 crop growth ground
observations. We introduce a new collection protocol, assigning up to two phenology labels that represent the primary and secondary growth stage in the field and thus indicate when stages are transitioning. More information about the annotation procedure can be found in the relevant publication "Fuzzy clustering for the within-season estimation of cotton phenology".
Along with the annotations we are publishing a unique dataset of 3,142 images. Each image is named in the following format:
{date}_{id}-{type}.jpg, where "date" is in the format {year}{month}{day} and refer to the exact date the image was captured, "id" is the unique id of a parcel and "type" is one of "O", "A" or "B". "O" refers to a panoramic photo of the entire field, "A" to a photo that is representative of the majority of the plants in the field and "B" to one representative of a minority of plants in the field. For each date and each unique parcel the first two exists always while the latter close-up photo had be captured only when the percentage of the minority class, in terms of area, was deemed significant.
If you use this dataset, please cite our paper:
@article{sitokonstantinou2022fuzzy,
title={Fuzzy clustering for the within-season estimation of cotton phenology},
author={Sitokonstantinou, Vasileios and Koukos, Alkiviadis and Tsoumas, Ilias and
Bartsotas, Nikolaos S and Kontoes, Charalampos and Karathanassi, Vassilia},
journal={PLOS ONE},
year={2023},
doi={10.1371/journal.pone.0282364}
Towards Automated Threat-Informed Cyberspace Defense
No full textTo attain their goals, attackers have developed highly automated intelligence-driven attack capabilities. In contrast, defenders are still challenged by prolonged detection and response times due to their insufficient threat situational awareness and the fact that they heavily rely on manually executed defense operations. This thesis introduced and enhanced foundational technology in support of accomplishing automated threat-informed cyberspace defense. The research direction was influenced by the Integrated Adaptive Cyber Defense (IACD) framework that defines three fundamental capability requirements to realize autonomous defense environments that can detect, respond to, or outmaneuver cyber attacks in cyber-relevant time. In particular, the main contributions of this Ph.D. work are: - To enhance defenders' knowledge about adversaries, we introduced an ontological approach for representing and modeling their personas based on their defining characteristics. - We introduced a playbook standard for creating, documenting, and sharing security processes and procedures. Defenders can exchange such playbooks and utilize them to automate segments of their defense operations. - We supported the development of a machine-readable language that standardizes the way we command and control cyber defense systems
Asphalt Gardens
No full textAsphalt Gardens are a landscape intervention alongside the E17 Highway that connects Belgium and France. The project looks at the idea of highway landscape as a pastoral landscape. It deals with what is artificial and natural, with the idea of perceiving something through a window frame, through speed. It deals with the specific environment of the Eurometropoils and by extension the northern European Landscape. Appreciating the as found condition as a given situation of the motorway landscape, Asphalt Gardens provokes the ideas of beauty. They don’t acquire borrowed beauty but they celebrate the rough and artificial highway landscape. The manner of our regard to discarded artifacts, such us the ordinary highway defines the way we look landscapes and how we can create gardens. The highway landscape has a particular aesthetic language and beauty. In the same context, a garden next to a highway can be beautiful if it refers to the highway. The project focuses on the highway landscape as a particular post-industrial territory which deserves attention because of its dominance and use. The world landscape gradually changed in meaning through the last two centuries. First it meant the picture of a view, an artist’s interpretation of a scenery. Informal landscape tradition, such as the 18th century English gardens designed from Humphrey Repton, was influenced by the pastoral landscape. The gardeners, with a similar way as the painters of pastoral and picturesque landscapes, decided what to include or omit in their design. They created stylized, picturesque landscapes, leaving out from the composition the muddy roads. In this logic, the garden consists of a series of pictorial compositions. In each of these pictures we find the basic principles of harmony, unity and contrast. In the landscape paintings of Jacob van Ruisdel and Van Goyen, the northern European landscape is depicting as an as found condition and that makes it pastoral. In many of the paintings the idea of harmony between the man-made and the natural is introduced with the ruin. The artificial is taken over from the natural and the ruin harmonizes the two contradictory principles. Aspalt Gardens recontextualize existing artifacts and reflects the reality in a way that provokes relations between objects and materials that are taken for granted. They suggest a new reading and observation of the ordinary landscape. The Berlage Post-MSc in Architecture and Urban Desig
Automatic detection of waterbeds in shallow muddy water bodies in the Netherlands using green LiDAR
No full textBathymetric Airborne LiDAR technology is used to map the depth of water bodies. It uses a green light sensor which is able to penetrate the water surface and reach the bottom part of the interesting water areas. However, water conditions affect the capability of the green laser penetration. Factors such as the water clarity, the water turbidity (waves) and the vegetation are some of the crucial restrictions for green light to penetrate the water; particularly in shallow inland water areas. This research examined the capability of green LiDAR data to improve the bathymetric surveys in case of muddy and shallow inland Dutch water bodies. The potential of green LiDAR increases as the monitoring of water depths is getting easier, faster and more efficiently in terms of cost than manual GPS measurements. The main challenges of this thesis are concentrated both on the existence of various sparse and dense parts in the point-cloud and on the limitations of the data in terms of quality due to the not ideal water conditions. Specifically, this thesis presents a workflow with required procedures that aim to process a raw green LiDAR point clouds of water bodies and then classify them into three classes: water surface, underwater and bottom points. Pulse and Neighbourhood based algorithms were implemented in order to perform a classification process with high level of automation. Point characteristics such as intensity, number of returns, return number were analysed per pulse. Voxelization was used as a spatial method to divide the 3D space into water columns (3D Voxels). The spatial distribution of the water points into the water columns was examined based on different factors such as elevation, density, intensity. By comparing and partially combining those methods the detection process was improved to deal with shallow and muddy water bodies. A classification confidence value was calculated and stored for each potential bottom point. The resulting output is a classified green LiDAR point cloud based on the confidence values. Using elevation, density and confidence values, raster DTMs with multiple bands were created for each water body. To sum up, this thesis proposed an efficient workflow to process and automatically classify green LiDAR water-body data using both voxel and pulse based methods.Geomatic
The Guesthouse in the Valley: a festive narrative for the countryside of Maastricht
No full textLocated in the hilly landscape outside Maastricht, the guesthouse in the valley could be described as a deep contextual project; a small building in the larger countryside. Inspired by the local material culture and made from the very earth of the Limburgian farm routes, the building is dedicated to those who affiliate the action of walking in nature as a festive practice. Consisted of one common lounge/dining and an accommodation wing, the project aims to unfold different ways of experiencing nature by emerging the equal participation of all the human senses. From the large openings and the cave-like interiorsto the intimate sleeping rooms and the beautiful surrounding. It is a place where modern walkers,visitors or simple nature lovers can experience the self-restoration process of nature, and through that practice, achieve their own self-healing as well.Architecture, Urbanism and Building Science
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