Data Analysis

On non-constrained, constrained and mandatory many-to-many relationship types

by Peretz Shoval

Author: Peretz Shoval
Journal of Database Management (1993), Vol. 4 (1), 3-14.

The purpose of a data model is to express the semantics of the real world that it models. One common situation that... more The purpose of a data model is to express the semantics of the real world that it models. One common situation that should be modeled is that of many-to-many relationships between objects (entities). In this paper we distinguish between three different types of m:n relationships: non-constrained, constrained and mandatory. Their meaning and consequences are discussed along with examples from Etity Relationship (ER), Binary-Relationship (BR) and Relational models. These refined m:n relationship types bring to light additional semantics, thereby facilitate analysis and representation of the data structure.

Job Analysis Project

by Lee Wilson

This project is one I did where I took a template and interviewed a person in a job of interest. The intent is to get... more This project is one I did where I took a template and interviewed a person in a job of interest. The intent is to get to know the job in a detailed view that covers every aspect of the job. The template is viable tool for getting to know a job. It is also useful for determining if the job suits you or not. The template is detailed to the point of it being a bargaining tool in order to secure a job.

Analysing video and audio data: existing approaches and new innovations

by Elizabeth FitzGerald (née Brown)

Full citation:
FitzGerald, E. (2012) Analysing video and audio data: existing approaches and new innovations. Short paper submitted to the Surface Learning Workshop 2012, 18-20 March 2012, Bristol, UK.

Across many subject disciplines, video and audio data are recorded in order to document processes, procedures or... more Across many subject disciplines, video and audio data are recorded in order to document processes, procedures or interactions. These video and audio data are consequently analysed using a number of techniques, in order to try and make sense of what was happening at the time of the recording, sometimes in relation to initial hypotheses or sometimes in terms of a 'post hoc' analysis where a more grounded approach is used. This paper contains an overview of tools and techniques for examining video data and looks at potential new methods borrowed from the field of learning analytics, related to discourse analysis. Discourse analysis, where conversations and the spoken word are explored and dissected in detail, can provide us with information about the learning context and the ways in which learners interact with people and other resources in their environment.

The bending mechanics in a dynamic subduction system: Constraints from numerical modelling and global compilation analysis

by Gabriele Morra

published in "Tectonophysics"

Lithospheric plates bend at subduction zones where the vertical motions of the slabs are converted to surface plate... more Lithospheric plates bend at subduction zones where the vertical motions of the slabs are converted to surface plate motions. To understand the mechanics of plate bending we derive scaling laws for the deflection at the margin, i.e. radius and dip, from numerical models of a subducting viscoelastic plate. In such dynamic system we find that the buoyancy and the stiffness of the plates control the radius and the dip, as well as the plate motions toward the trench. This mechanical model successfully predicts the curvature of published three- dimensional laboratory and numerical models. For a thorough comparison with the observable, we have also implemented forces additional to the slab pull, such as the suction force and far-field stresses. By increasing or resisting the torque applied at the trench by the slab, these forces can largely rearrange the dip and the radius of slabs and the inherent plate motions, although they do not alter the observed anticorrelation between radius and dip. Similar inverse correlation relationship and dip-radius ranges are shown by most of the subduction zones analysed from a global compilation. Radii in the range of 100–350 km and dips of 30°–70° for slabs that extends to the bottom of the upper mantle are compatible with the models, and allow estimating an average lith- ospheric viscosity contrast of ~200 in the bending with respect to the ambient mantle. Radii and dips outside of this range are in good agreement with the trends and the magnitudes of models that include suction and far-field forces. In all these subduction zones, the correlation between dip, radius and plate velocity is found to be com- patible with that of the models, showing how relevant bending is for the dynamics of Earth.

Die frühesten Metalldolche Südost-und Mitteleuropas (Praehistorische Zeitschrift 68, 1993/1, 103–145) and Die früheste dolche Bulgariens (Anatolica XVIII, 1992, 61-69)

by Ivan Vajsov

This article is of the earliest metal daggers, which in some cases are hardly distinguishable from knives, is compiled... more This article is of the earliest metal daggers, which in some cases are hardly distinguishable from knives, is compiled in the area between southern Bulgaria (Rohdope mountains), the western Ukraine and Upper Austria (Mondsee). They can be dated to the so called transitional phase between the Eneolithic and the Early Bronze Age according to current Bulgarian terminology. The oldest examples can be placed in the earlier part of the 4th millennium B. C. and are associated with the Bodrogkeresztur Culture. An analysis of the formal aspects of these daggers allows them to be divided into 12 types (with variants), which only partially show genetic connections. The distributions of the individual dagger types do not necessarily correspond to the areas occupied by archaeological cultures defined by pottery. Groupings based on spectral analysis result two main geographic concentrations. Daggers made with arsenic alloys are found in the western Pontic area where as west Carpathian and central Danubian examples show no arsenic inclusions. Interestingly, some Bodrogkeresztur type daggers in Transylvania are made with arsenic alloys, others are not (Arıuşd, Mereşti and Mastacän). Therefore we assume that the daggers first spread from west to east and later dispersed in the opposite direction. The earliest dagger horizon dealt with here, is seen as being a fundamental part of the deep seated changes which lead to the formation of the Early Bronze Age after Aegean terminology.

Das Grab 982 und die Protobronzezeit in Bulgarien

by Ivan Vajsov

This article is a little addition to the study of the earliest metal daggers "Die frühesten Metalldolche Südost-und Mitteleuropas. - Praehistorische Zeitschrift 68, 1993/1, 103-145." It is addressed mainly to the dagger from the tomb № 982 of the prehistoric necropolis in Durankulak (Northeastern Bulgaria). Investigations of this dagger is of great importance to the prehistory of Europe. The period in which it occurs is associated with the collapse of one of the most powerful cultural system in Europe, that of late Eneolithic cultures in Bulgaria (about 4200 years BC). Long hiatul chronologically in the second half of IV millennium BC Dobrogea (Northeastern Bulgaria) is again inhabited by tribes coming from Nord Pontic steppes. These people are already aware of an entirely new, progressive method for enrichment of copper ores with a mixture of arsenic (As). This is a completely new technology for Europe and is essential to the Bronze Age.

Discovered in a tomb 982 from Durankulak (Northeastern Bulgaria) is discussed in the broader context in reflecting the turbulent historical processes in the second half of IV millennium BC. Arsenic-bronze (As) of which the earliest daggers and axes of the fourth millennium BC, have the same production technology. This progressive technology happens after "hunger for metal," typical of Europe in IV millennium BC and a new "know-how", reached Europe through the migration of northern nomads. The introduction of this technological revolution, which eventually paved the way for the emergence of classical bronze metallurgy.

A Mathematical Approach in Evaluating Biotechnology Attitude Scale: Rough Set Data Analysis

by Halil Eksi

Serkan NARLI, Olcay SINAN
Educational Sciences: Theory & Practice - 11(2) • Spring • 720-726

Individuals’ thoughts and attitudes towards biotechnology have been investigated in many countries. A Likerttypemore Individuals’ thoughts and attitudes towards biotechnology have been investigated in many countries. A Likerttype
scale is the most commonly used scale to measure attitude. However, the weak side of a likert-type scale
is that different responses may produce the same score. The Rough set method has been regarded to address
this shortcoming. A likert-type attitude scale was evaluated using the rough set method. Randomly selected
60 participants were given a biotechnology attitude scale and their responses to the scale items were examined
using the method mentioned above. Participants belonging to a specific group were examined if they might
also belong to another group in light of this method. Mathematical values of each sub-dimension and the extent
to which a specific group accounts for the total variance in the overall dimension were calculated. Finally,
the accuarcy of approximation for the high, moderate, low and very low sets are calculated as aR(Y)=1, aR(O)=0,8,
aR(D)=0,778, aR(ÇD)=1 It means that the moderate and low sets are rough sets. Through reduction of attributes,
“Public awareness of GMO, Ethics of genetic modifications, Ecological impact of genetic engineering and Use of
genetic engineering in human medicine” sub-dimensions were found to be the indispensable sub-dimensions.

Context-aware information adaptation in collaborative settings

by Afsaneh Doryab

Ph.D. Thesis

Context-aware information retrieval helps providing resources that are relevant to the current situation of users. In... more Context-aware information retrieval helps providing resources that are relevant to the current situation of users. In many work environments, carrying out a task demands massive information access and management. Context-aware computing in such settings can reduce the need for manual information retrieval and assist the users in bringing forward relevant resources and hence decreasing the time and effort needed to manage and update the information.
So far, research in context-aware computing has mainly focused on adapting the devices and systems to the individual user’s need or behaviour. The system detects different patterns of a user’s work and adapts accordingly. However, in a collaborative work environment such as a hospital, adaptive information retrieval goes beyond covering the need of individuals, as clinical tasks often involve several users working concurrently sharing systems, devices and documents.
This thesis proposes an approach to the problem of context-aware information retrieval in multi-user collaborative environments with public shared devices. We identify three sub problems to be addressed;
1) detection of the situation in which the device is present; 2) recognition of sequential multiple concurrent activities in the observable space of the device; and 3) adaptation of the device to present the relevant information to current situation.
For the problem of detecting the situation of a device, we argue that in order to provide more precise information adaptation on different devices spread in a ubiquitous shared environment, the context of a device should be weighted. This can be done by recognizing not only the contextual elements related to that device (e.g., location and time) but also the situation pattern in which the device is present. For this, we introduce a method called ‘L-P-A Walk’ that identifies such situation patterns in the observable space of a device and helps weighting context elements that matter for that situation.
For the problem of activity recognition, we address the issues of i) multiple concurrent activities and ii) sequential dependency between activities. For the former, we propose joint- and parallel-learning mod els; and to address the latter, we add virtual and historical evidence as features to the learning models. We perform classification on the data and evaluate the output by proposing a distance based method. The best performance is obtained in parallel learning with historical evidence.
For the problem of information adaptation, we point to the fact that most real world situations have been experienced at least once before either in the same or a different setting. We argue that despite slight differences, there is always a most similar situation to the current one that can provide an initial set of handling or actions that might also be relevant to the new situation. This initial set is then updated, evolved, and adapted to the specific characteristics/profile of the current situation. By incorporating collaborative filtering, we dynamically provide most relevant types of information that has been used in similar
situations. An evaluation of our approach with clinicians shows
that the proposed mechanism is able to i) incrementally build and
update the model of relevant information for every situation based
on similar past cases and ii) incorporate users’ information choices as implicit feedback and retrain the model to provide more satisfactory information assistance.

Devil in the detail: using a pupil questionnaire survey in an evaluation of out-of-school classes for gifted and talented children

by Mike Lambert

Education 3-13, 36(1) February 2008, 69-78.

The use of questionnaires to evaluate educational initiatives is widespread, but often problematic. This paper... more The use of questionnaires to evaluate educational initiatives is widespread, but often problematic. This paper examines four aspects of an evaluation survey carried out with very able pupils attending out-of-school classes: ethics, design, bias and interpretation. There is a particular focus on the interpretation and analysis of pupils’ answers to open questions. Conclusions are drawn from this analysis which will help teachers and others to take a careful and critical approach to their use of questionnaires in educational evaluation.

Author profile: http://www.wlv.ac.uk/default.aspx?page=13209

[A limited number of eprints of this article are available - send me a message if you require one].

ECONOMIC SITUATION OF DAIRY FARMERS IN DIFFERENT PRODUCER PRICES SCENARIO (Sytuacja ekonomiczna gospodarstw zajmujących się produkcją mleka w różnych scenariuszach zmian cen produktów rolnych)

by Artur Wilczyński

Language: Polish

Computational analysis of rheumatoid arthritis disease using XAMPP server

by ANAND KUMAR K S

Abstract: When advancement in software and hardware technology takes place, there is an evolution of new computational... more Abstract: When advancement in software and hardware technology takes place, there is an evolution of new computational approach for the analysis of biological data such as analysis of sequence of protein or nucleic acid. Bioinformatics is the application of computer technology to the management of biological information. Computers are used to gather and analyze  biological information, which can then be applied to drug discovery and development. There is a huge input of data for rheumatoid arthritis everyday. The data may be protein or nucleic acid sequence. This system  includes development  of  integrated  system  in  order  to  do  all  in  one  analysis  of  rheumatoid  arthritis. In this system doing both protein and genomic analysis is done with the help of tools like Clustal x and Tree view. In this system software’s like XAMPP server and scripting languages like Hypertext Preprocessor and Perl are used. This system takes all sequences related to rheumatoid arthritis and does phylogenetic analysis. Results will be in the form of alignments and scores. Results of this system will be useful for research communities like doctors and pharmacists.
Key words: In silico, Rheumatoid arthritis, Phylogenetic analysis, Perl, Hypertext Preprocessor.

Análisis de datos comerciales

by David Nettleton

Developer Belief vs. Reality: The Case of the Commit Size Distribution

by Michel Alexandre Salim

Authors: Dirk Riehle, Carsten Kolassa, Michel A. Salim. In "Proceedings of Software Engineering 2012 (SE ’12)". Springer Verlag, 2012.

The design of software development tools follows from what the developers of such tools believe is true about software... more The design of software development tools follows from what the developers of such tools believe is true about software development. A key aspect of such beliefs is the size of code contributions (commits) to a software project. In this paper, we show that what tool developers think is true about the size of code contributions is different by more than an order of magnitude from reality. We present this reality, called the commit size distribution, for a large sample of open source and selected closed source projects. We suggest that these new empirical insights will help improve software development tools by aligning underlying design assumptions closer with reality.

Phase Recognition during Surgical Procedures using Embedded and Body-worn Sensors

by Afsaneh Doryab

Data Integration in Bioinformatics: Current Efforts and Challenges

by Jeffrey Townsend

Data Without Boundaries - call for proposals

by TARKI Social Research Institute

SUPPORT FOR TRANSNATIONAL ACCESS TO OFFICIAL MICRODATA
Call for research proposals under the FP7 EU-project
“Data without Boundaries” (DwB)

The first call for research proposals by the FP-7 EU project Data without Boundaries project is open. To enhance... more The first call for research proposals by the FP-7 EU project Data without Boundaries project is open. To enhance access across borders to official microdata for comparative research, Data without Boundaries gives you the unique opportunity to work with data from a number of European countries.

Advanced methods of electrophysiological signal analysis and symbol grounding?: dynamical systems approaches to language

by Carsten Allefeld

C. Allefeld, P. beim Graben, and J. Kurths, editors. Chaos and Complexity Letters, volume 2(2/3). Nova Science Publishers, 2007. Special Issue on Advanced Methods of Electrophysiological Signal Analysis and Symbol Grounding? Dynamical Systems Approaches to Language.
Appeared also as a monograph: Nova Science Publishers, 2008.
Proceedings from a workshop at the University of Potsdam, 2005.

Data Mining – Fuzzy Neural Genetic Algorithm In Predicting Diabetes

by Jca Ksrce

S.Sapna and Dr. A.Tamilarasi

Keywords : Data Mining, Diabetes , Fuzzy Systems, Genetic Algorithm(GA), Neural Networks Keywords : Data Mining, Diabetes , Fuzzy Systems, Genetic Algorithm(GA), Neural Networks

Implementation of an Efficient Algorithm

by Jca Ksrce

K.Jayasudha and Dr.C.Chandrasekar
Keywords : Aprior , AprioriTid, item set , partition
Volume 1 Issue 1 - Jan - Mar 2008
Published in Journal of Computer Applications
http://www.jcaksrce.org

Practical Ways to Promote and Support Collaborative Data Analysis Projects

by Joyce Chapman

Co-authored with Cory Lown. 2011. Code4Lib. 12.

This article is an appeal to technically-oriented library staff to initiate collaborative, bottom-up data-analysis... more This article is an appeal to technically-oriented library staff to initiate collaborative, bottom-up data-analysis efforts across their libraries. We discuss successful strategies used at North Carolina State University (NCSU) Libraries for initiating cross-departmental outreach for data-analysis work, as well as structuring and storing data, and disseminating findings. We present several specific examples of collaborative data-analysis projects undertaken at NCSU Libraries.