Search results for "Sign"

Robustifying principal component analysis with spatial sign vectors

2012

In this paper, we apply orthogonally equivariant spatial sign covariance matrices as well as their affine equivariant counterparts in principal component analysis. The influence functions and asymptotic covariance matrices of eigenvectors based on robust covariance estimators are derived in order to compare the robustness and efficiency properties. We show in particular that the estimators that use pairwise differences of the observed data have very good efficiency properties, providing practical robust alternatives to classical sample covariance matrix based methods. peerReviewed

Edukacja dla rynku pracy czy dla emancypacji?

2018

In the article I present opposing goals of education: adaptation to the labor market and emancipation. I describe the paradoxes of modern democracy and I show the features of the modern labor market, its limitations for the development and emancipation of the individual. I ask a question about the sources and manifestations of the limitations of the emancipatory function of higher education, and I look for proposals to solve this problem

Towards CCTV-aware Routing and Navigation for Privacy, Anonymity, and Safety - Feasibility Study in Jyväskylä

2021

AbstractIn order to withstand the ever-increasing invasion of privacy by CCTV cameras and technologies, on par CCTV-aware solutions must exist that provide privacy, safety, and cybersecurity features. We argue that a first important step towards such CCTV-aware solutions must be a mapping system (e.g., Google Maps, OpenStreetMap) that provides both privacy and safety routing and navigation options. Unfortunately, to the best of our knowledge, there are no mapping nor navigation systems that support CCTV-privacy and CCTV-safety routing options. At the same time, in order to move the privacy vs. safety debate related to CCTV surveillance cameras from purely subjective to data-driven and evide…

A sustainable city environment through child safety and mobility:A challenge based on ITS?

2012

Our cities should be designed to accommodate everybody, including children. We will not move toward a more sustainable society unless we accept that children are people with transportation needs, and ‘bussing’ them around, or providing parental limousine services at all times, will not lead to sustainability. Rather, we will need to make our cities walkable for children, at least those above a certain age. Safety has two main aspects, traffic safety and personal safety (risk of assault). Besides being safe, children will also need an urban environment with reasonable mobility, where they themselves can reach destinations with reasonable effort; else they will still need to be driven. This p…

Improving the Downwind Sail Design Process by Means of a Novel FSI Approach

2021

The process of designing a sail can be a challenging task because of the difficulties in predicting the real aerodynamic performance. This is especially true in the case of downwind sails, where the evaluation of the real shapes and aerodynamic forces can be very complex because of turbulent and detached flows and the high-deformable behavior of structures. Of course, numerical methods are very useful and reliable tools to investigate sail performances, and their use, also as a result of the exponential growth of computational resources at a very low cost, is spreading more and more, even in not highly competitive fields. This paper presents a new methodology to support sail designers in ev…

Visual saliency by keypoints distribution analysis

2011

In this paper we introduce a new method for Visual Saliency detection. The goal of our method is to emphasize regions that show rare visual aspects in comparison with those showing frequent ones. We propose a bottom up approach that performs a new technique based on low level image features (texture) analysis. More precisely, we use SIFT Density Maps (SDM), to study the distribution of keypoints into the image with different scales of observation, and its relationship with real fixation points. The hypothesis is that the image regions that show a larger distance from the mode (most frequent value) of the keypoints distribution over all the image are the same that better capture our visual a…

The shape of the liquid plain: sicilian salt flats

2019

This paper analyzes the salt flats as a place for the mixing of knowledge and experiences that originate and substantiate life: from the application of physical, chemical and biological principles to produce salt, to economic laws to regulate sales and trade, to aspects socio-anthropological aspects underlying the life of the communities that worked in production. A patrimony of material and immaterial overlaps, generated by the redesign of a segment of territory with physical and positional characteristics median between sea and land, and in which man strives to obtain fundamental resources for his livelihood. Given the complex moment of crisis and gradual abandonment that these particular…

Sampling design and weighting strategies in SHARE Wave 6

2017

Krāpšanas signāli finanšu pārskatos

2019

Diplomdarbā “KRĀPŠANAS SIGNĀLI FINANŠU PĀRSKATOS” apkopotās galvenās problēmas: ietekmīgo amatpersonu finanšu krāpšana; krāpnieka motīvs un iespējas; revīzijas iemesls; krāpšanas signāli un to identificēšana finanšu pārskatos. Diplomdarba mērķis ir apkopot teoriju par krāpšanas risku identificēšanas paņēmumiem finanšu pārskatā, izdarīt secinājumus par aktuāliem paņēmieniem un izstrādāt priekšlikumus, lai veicinātu savlaicīgu krāpšanas risku identificēšanu finanšu pārskatos. Pētījuma rezultātā, teorētiskajā daļā, autore raksturoja krāpšanas jēdzienu un apkopoja krāpšanas veidus. Praktiskajā daļā, pielietojat horizontālo, vertikālo un finanšu analīzi, tiek piedāvāta metode iespējamo krāpšanas…

Figuration of Taste and Web-design of Flavor Between Aesthesia and Aesthetics

2012

International audience; Figuration du goût et webdesign de la saveur, entre esthésie et esthétique 영어 초록 목차 û é ééé 키워드Solid relationships between aesthetics and ethics are always discussed, as so are many complex ramifications between the sensible and the intelligible. The question comes to enrich a third term which is often set back from these basic polarities: the aesthesia, the world of the senses, sensations, which are intended to cooperate. Schematically, it creates a fundamental relationship among aesthesia (sensations), aesthetic (forms) and ethics (values), which governs the approach of the sensible world and directs a complex issue such as the representation taste, the taste sensa…