Data journalism: mapping the future - Mair, John; Keeble, Richard Lance
The idea of the journo-coder, programmer-journalist, hacker-journalist, journo-programmer (the terminology is undecided) is gaining ground as data journalism develops both in Britain and internationally. Programmers are coming into newsrooms, journalists are venturing further into programming and there is some blurring where the two meet. Data journalism (DJ) is certainly becoming the Big Buzz Story in the media but so far little has been written about it. This new, jargon-free text, edited by John Mair and Richard Lance Keeble (with Teodora Beleaga and Paul Bradshaw), provides an original and thought-provoking insight into DJ. The first section, with contributions from Teodora Beleaga...
Grierson versus ethnographic film - Winston, Brian
Ethnographic Film, which combines documentary filming and anthropological research, originated in the late 19th century. Early on, anthropologists used film to record cultures. Documentary filmmakers in the early 20th century developed different strategies, with technical developments aiding further advances. In the 1950s to 1970s, intense debates among anthropologists, filmmakers and artists, many of whom met regularly at conferences and festivals, took place on the methodology of ethnographic filmmaking. Their discussions were handed on by word of mouth, but rarely recorded or published. In 2001, the pioneers of ethnographic film met in Göttingen and put together their recollections of the genre’s...
Feeding and vigilance behaviour of breeding ostriches (Struthio camelus) in a farming environment in Britain. - Ross, E. J.; Deeming, D. Charles
Vigilance and feeding behaviour of male and female adult breeding ostriches were recorded to determine feeding and scanning bout lengths, a time budget and the pattern of vigilance immediately after food was provided. 2. Males were more vigilant and fed for shorter periods than females immediately after concentrate food was delivered but not throughout the whole day. 3. Most interscan periods of males were below 40 s with a maximum of 90 s compared with most interscan periods of females lasting less than 70 s with a maximum of 160 s. 4. Gender differences in behaviour are attributed to increased...
3D modeling of indoor environments by a mobile platform with a laser scanner and panoramic camera - Biber, Peter; Fleck, Sven; Busch, Florian; Wand, Michael; Duckett, Tom; Strasser, Wolfgang
One major challenge of 3DTV is content acquisition. Here, we present a method to acquire a realistic, visually convincing D model of indoor environments based on a mobile platform that is equipped with a laser range scanner and a panoramic camera. The data of the 2D laser scans are used to solve the simultaneous lo- calization and mapping problem and to extract walls. Textures for walls and floor are built from the images of a calibrated panoramic camera. Multiresolution blending is used to hide seams in the gen- erated textures. The scene is further enriched by 3D-geometry cal- culated from...
These isles are alive with the buzz of digits - Winston, Brian
Digital launch time last autumn. The TV screen keeps filling up with animated noughts and ones. It’s the BBC explaining how digital broadcasting “works” again. They used the same image in the glossy brochure they produced, BBC Digital: The Adventure Starts Here, with this helpful added explication: “Digital broadcasting uses computer technology. It converts sound and pictures into a series of digits (noughts and ones) and is transmitted through the air using modified transmitters which are then received by television aerials.” [First paragraph]
A closed-loop IGBT non-destructive tester - Ahmed, Amr; Shadrokh, Y.; Coulbeck, L.; Castellazzi, A.; Johnson, C. M.
Non-destructive testing capability is a very important aspect of power device technology evolution towards more robust and reliable products. This paper proposes a closed-loop non-destructive tester for high power multi-chip IGBT modules. Other than proposed elsewhere in the past, the solution put forward here includes the possibility to be used in closed-loop, by proper identification and monitoring of representative pre-failure signatures to automatically trigger the activation of a protective switch and prevent the failure of the device under test. The advantage is that devices of different characteristics (e.g., voltage range, type) can be tested without having to set a specific...
Applied sensor fault detection and validation using transposed input data PCA and ANNs - Zhang, Yu; Bingham, Chris; Gallimore, Michael; Yang, Zhijing; Chen, Jun
The paper presents an efficient approach for applied sensor fault detection based on an integration of principal component analysis (PCA) and artificial neural networks (ANNs). Specifically, PCA-based y-indices are introduced to measure the differences between groups of sensor readings in a time rolling window, and the relative merits of three types of ANNs are compared for operation classification. Unlike previously reported PCA techniques (commonly based on squared prediction error (SPE)) which can readily detect a sensor fault wrongly when the system data is subject bias or drifting as a result of power or loading changes, here, it is shown that...
Corruption and economic development nexus: variations across income levels in a non-linear framework - Gounder, Rukmani; Saha, Shrabani
This article investigates the relationship between income and corruption which provides an insight to the changes in the level of perceived corruption and economic development across countries. An existing shortcoming is that previous studies have focused only on detecting the linear effects of income on corruption. We therefore use the hierarchical polynomial regression to evaluate any existence of a non-linear relationship after controlling for socio-economic and institutional factors. Our results challenge some of the findings of a negative income-corruption association in the literature, and provide some new inferences. The findings indicate a quadratic function that best fits the data, and...
Do political instability, terrorism, and corruption have deterring effects on tourism development even in the presence of unesco heritage? A cross-country panel estimate - Yap, Ghialy; Saha, Shrabani
This article evaluates the effects of political instability, terrorism, and corruption on tourism development, particularly UNESCO-listed heritage destinations. Using a fixed-effects panel data analysis for 139 countries over the period 1999-2009, the result reveals that a one-unit increase in political instability decreases tourist arrivals and tourism revenue between 24 and 31 and 30 and 36, respectively. Furthermore, in the presence of heritage, terrorism has negative effects on tourism demand even though its effect is lower than that of political instability. However, the study shows that an increase in corruption index would not have an adverse influence on tourist arrival numbers,...
Online learning and fusion of orientation appearance models for robust rigid object tracking - Marras, I.; Medina, J. A.; Tzimiropoulos, G.; Zafeiriou, S.; Pantic, M.
We present a robust framework for learning and fusing different modalities for rigid object tracking. Our method fuses data obtained from a standard visual camera and dense depth maps obtained by low-cost consumer depths cameras such as the Kinect. To combine these two completely different modalities, we propose to use features that do not depend on the data representation: angles. More specifically, our method combines image gradient orientations as extracted from intensity images with the directions of surface normals computed from dense depth fields provided by the Kinect. To incorporate these features in a learning framework, we use a robust...
Integrated spacecraft environments model (ISEM) - Rantanen, Ray; Gordon, Timothy
Capabilities of the ISEM code are presented that can aid in the understanding of the complex interactions between a space system and the ambient environment. The development of ISEM has been funded primarily by NASA over a period of 7 years. The code was developed as a flexible engineering tool to model the neutral molecular environment and it's interactions with the spacecraft based on orbital conditions and spacecraft molecular sources. Ionization of neutrals and charge exchange are added features. ISEM is a next generation of contamination models developed by the authors for Skylab (ODRAP), Outgassing Deposition Rate Assessment Program and...
Learning automaton methodology for control system design in active vehicle suspensions - Gordon, T. J.; Marsh, C.; Wu, Q. H.
This brief study demonstrates that a learning automata methodology is capable of solving simple active suspension control system design problems. The learning control is apparently capable of resolving system effects such as transducer noise and bandwidth limits. The control that is eventually learnt depends on the underlying system, the cost function, and the random learning environment.
Factorial analysis of Kalman filtering for semi-active vehicle suspension control - Best, Matthew C.; Gordon, Timothyn J.
This paper considers the design of Kalman filter observers for the on-line estimation of dynamic states of a vehicle suspension, with a view to applying semi-active suspension control. A data based identification method is presented, and two sources of data are considered; from vehicle tests on a four poster hydraulic shake rig, and also from quarter vehicle simulations. Both are subjected to a `full factorial' statistical study, and detailed conclusions are drawn concerning the relative importance of various operational parameters, in particular the type and location of feedback sensors. Finally, a `minimal' Kalman filter is designed which uses wheel hub...