Effects of the extensive culture system as finishing production strategy on biometric and chemical parameters in rainbow trout

The effect of finishing extensive farming period, to reduce fat content and manipulate the fatty acid profile of fish muscle, was evaluated in rainbow trout. Fish were stocked in an artificial lake, in which fish were fed only on naturally available nutrients with no supply of artificial feed, for different lengths of time from 0 to 120 days. No weight loss was noted during the whole finishing period while total length increased from 228±7 to 269±3 mm and the condition factor decreased from 1.41±0.04 to 0.89±0.02. The total fat content of the fillets decreased considerably from 4.7±0.6% at the beginning to 2.4±0.4% and 0.7±0.2% after 45 and 120 days respectively. Fillet fatty acid composition was affected by the time of stocking in the extensive farm. In contrast to the reduction in C18:1n-9, C18:2n-6, total monounsaturated fatty acid and total n-6 percent values, an increase in the C20:5n-3, C22:6n-3, total polyunsaturated fatty acid and total n-3 percent values was observed. It was shown that while other finishing strategies for salmonids have some disadvantages, the extensive culture system seems to be a potentially useful tool for increasing the general quality of the end product.

Transacting with citizens: Australian government policy, strategy and implementation of online tax lodgement

Many governments have shown leadership in encouraging their citizenry to conduct transactions on-line. The policies that underpin these initiatives refer to a blend of civic benefits and efficiency goals. They combine the rhetoric of customer service with social shaping through ‘government as model user’ and procedures that require online activities. Many initiatives are described as ‘electronic service delivery’, terms that indicate an intention to provide much more than an additional channel for government interaction with citizens. Australia, as an innovator in eGovernment is a good example of this approach and its national government has specified policy goals for its online strategy. In this paper we examine the case of one Australian online delivery initiative, electronic tax lodgement (e-tax) and consider how well that initiative has met the policy goals of the government. Combining insights from Rogers’ Diffusion of Innovation theory and political analysis, we outline potential difficulties that governments face in implementing ESD initiatives. Our conclusion from this case study is that the provision of good technology is only a small part of the ESD challenge. It shows how success of an ESD implementation may yield contradictory outcomes in terms of overall eGovernment strategies. This case highlights the need for long-term
implementation plans and integration of initiatives with broader government strategy.

Piazza Vittorio : la transformazione urbanistica : quale identità per i nuovi cittadini? Identity and meaningful place making

Il caso della riqualificazione di Piazza Vittorio, ormai divenuta luogo storico dell'immigrazione a Roma, è un esempio delle sfide che si pongono oggi alle metropoli multietniche ed un'ottima occasione per riflettere sul significato che questo tipo di interventi assume per l'identità culturale della città e dei suoi abitanti, vecchi e nuovi. Lo studio proposto in questo volume chiama in causa la nozione di cultural built heritage, cioè il retaggio culturale di cui è testimone l'architettura, per mostrare quanto e come l'ambiente costruito dagli interventi architettonici ed urbanistici contribuisca a rappresentare, dunque a raccontare ed organizzare, sia lo spazio, sia gli scambi che in esso hanno luogo, sia le identità di coloro che lo abitano. È il primo volume della collana "Squarci. Mobilità dell'uomo, del suo pensiero e delle sue opere", presentata dal curatore Claudio Rossi in un'ampia introduzione. All'interno di "Squarci" si vuole proporre un percorso di studi e ricerche corredati da un dvd. L'occhio della telecamera - attraverso interviste o la realizzazione di docu-film - arricchisce la ricerca con nuove dimensioni d'analisi, che aggiungono elementi di comprensione e talvolta spingono a riconsiderare i risultati stessi delle indagini svolte. È quanto accade per "Mostafa, il mercato trasferito ed altre storie. La trasformazione di Piazza Vittorio a Roma", scritto e diretto da Emanuele Svezia

Structure of unemployment in country Victoria

Investigates the extent of structural unemployment in country Victorian regions through analysing labour force statistics by region, industry, age, gender and occupation. It was found that female workers in country Victoria and the young are the most likely to be structurally unemployed. There are indications that the structural unemployment problem is getting worse despite the continued fall in the unemployment rate.

A stage model of intranet technology implementation and management

In the seventies, Nolan was the first to address the need for a descriptive stage theory concerning the planning, organizing, and controlling activities associated with managing the organizational computer resource. The arrival of newer technologies such as those based on the Internet calls for fresh approaches in terms of their implementation and management. Intranet technology – which is based on Internet technology – differs from other types of IT in terms of its use and implementation. We propose a four-stage model for intranet implementation and management. Each stage is portrayed by seven general characteristics. We propose that in order to ensure intranet institutionalization, three existential crises must be overcome. Firstly, if the intranet is not nurtured by a sponsor it cannot evolve beyond its experimental beginnings. Secondly, if a critical mass of both users and content cannot be reached simultaneously, the intranet will not progress. Finally, if the intranet remains uncontrolled, it will be perceived to be useless and therefore users will abandon it.

Influence of atmospheric helium plasma on the surface energy of jute fibres and the performance of resulting composites

In this work, an atmospheric pressure glow discharge helium plasma treatment was employed to modify the surface properties of jute fibres. The resulting bio-composites showed an increase in flexural properties and interlaminar shear strength (ILSS) compared to composites produced using untreated jute fibres. To understand the reason behind the ILSS improvement, the acid–base properties of jute fibres were determined by contact angle analysis using the capillary rise method. The results were fitted further to van Oss–Chaudhury–Good (vOCG) and Chang–Qin–Chen (CQC) models to determine the Lifshitz–van der Waals (LW) and acid–base components of surface energy. Surface energy determined by the vOCG model revealed that plasma treatment of jute fibre resulted in a 22% increase in total surface energy, a 19% increase in the LW component and a 24% increase in the acid–base component of surface energy. The increase in the acid–base component is due to the significant increase (69%) in the electron-accepting (γ+S) parameter. On the other hand, the CQC model clearly indicates an amphoteric nature of the fibre surface based on opposite signs of the acid and base principal values (PSa and PSb). Overall, the results indicated that increases in both LW and acid–base components were responsible for improvement in the properties of the composites.

New cinema history and the computational turn

This paper outlines how the digitisation of both the film industry and contemporary research practices bear on the work of the new cinema historian. How might the opportunities presented by an unprecedented proliferation of data for example, also challenge the unspoken assumptions and ordinary practices of conventional film studies research? And how might the 'computational turn' present opportunities (and challenges) for a revisionist cinema history at the intersection of qualitative historiographies (focussed on the social experience of the cinema) and quantitative research approaches such as data mining, empirical analysis and digital visualisations?

It can be quite difficult to have your creativity on tap : balancing client expectations and artistic practice in the tattoo industry

Tattoo artists work in a commission structure. Their artistic practice, possibly more than in any other creative career, requires the complete approval of the client prior to the creation of the final work. An unsatisfactory tattoo cannot be on-sold, discarded or easily replaced. Rarely can a tattooer practice their art without external participation. Therefore, tattoo artists come up with a number of strategies to manage their client base to ensure that the art they are asked to create satisfies both the client and their own artistic skills and preferences. Drawing on phenomenological research conducted for my PhD investigating artistic persona, this paper will explore the strategies tattoo artists use to construct their portfolios, manage the tattoo consultation and design process, and develop their own artistic skills, in order to build a successful and rewarding career in the tattoo industry.

Mind change optimal learning of Bayes net structure

This paper analyzes the problem of learning the structure of a Bayes net (BN) in the theoretical framework of Gold’s learning paradigm. Bayes nets are one of the most prominent formalisms for knowledge representation and probabilistic and causal reasoning. We follow constraint-based approaches to learning Bayes net structure, where learning is based on observed conditional dependencies between variables of interest (e.g., “X is dependent on Y given any assignment to variable Z”). Applying learning criteria in this model leads to the following results. (1) The mind change complexity of identifying a Bayes net graph over variables V from dependency data is |V| 2 , the maximum number of edges. (2) There is a unique fastest mind-change optimal Bayes net learner; convergence speed is evaluated using Gold’s dominance notion of “uniformly faster convergence”. This learner conjectures a graph if it is the unique Bayes net pattern that satisfies the observed dependencies with a minimum number of edges, and outputs “no guess” otherwise. Therefore we are using standard learning criteria to define a natural and novel Bayes net learning algorithm. We investigate the complexity of computing the output of the fastest mind-change optimal learner, and show that this problem is NP-hard (assuming P = RP). To our knowledge this is the first NP-hardness result concerning the existence of a uniquely optimal Bayes net structure.