Large-scale structure of a nation-wide production network

Production in an economy is a set of firms' activities as suppliers and customers; a firm buys goods from other firms, puts value added and sells products to others in a giant network of production. Empirical study is lacking despite the fact that the structure of the production network is important to understand and make models for many aspects of dynamics in economy. We study a nation-wide production network comprising a million firms and millions of supplier-customer links by using recent statistical methods developed in physics. We show in the empirical analysis scale-free degree distribution, disassortativity, correlation of degree to firm-size, and community structure having sectoral and regional modules. Since suppliers usually provide credit to their customers, who supply it to theirs in turn, each link is actually a creditor-debtor relationship. We also study chains of failures or bankruptcies that take place along those links in the network, and corresponding avalanche-size distribution.Comment: 17 pages with 8 figures; revised section VI and references adde

Exercising consumer choice : switching gas suppliers in the residential market

In 1996 the UK government introduced competition into the UK residential gas market, the first such nation-wide experiment, and the forerunner of similar choice in the electricity market, both in the UK and later elsewhere. We report consumers’ attitudes to and behaviour in switching suppliers based on a representative nation-wide survey at an intermediate stage, when some consumers had a choice of suppliers, and other markets were yet to be opened. We explore their attitudes and choices using an investment model of costs and benefits

Negotiating the 'trading zone'. Creating a shared information infrastructure in the Dutch public safety sector

Our main concern in this article is whether nation-wide information technology (IT) infrastructures or systems in emergency response and disaster management are the solution to the communication problems the safety sector suffers from. It has been argued that implementing nation-wide IT systems will help to create shared cognition and situational awareness among relief workers. We put this claim to the test by presenting a case study on the introduction of ‘netcentric work’, an IT system-based platform aiming at the creation of situational awareness for professionals in the safety sector in the Netherlands. The outcome of our research is that the negotiation with relevant stakeholders by the Dutch government has lead to the emergence of several fragmented IT systems. It becomes clear that a top-down implementation strategy for a single nation-wide information system will fail because of the fragmentation of the Dutch safety sector it is supposed to be a solution to. As the US safety sector is at least as fragmented as its Dutch counterpart, this may serve as a caveat for the introduction of similar IT systems in the US

Nation-Wide Evaluation of Colostrum Quality

Samples of maternal colostrum (MC) were collected from 67 farms in 12 states between June and October, 2010 to determine IgG concentration and bacterial contamination. Samples were identified by breed, lactation, and if the sample was fresh, refrigerated or frozen prior to collection. Concentration of IgG in MC ranged from \u3c 1 to 200 mg/ml, with a mean IgG concentration of 68.8 mg/ml. Nearly 30% of MC contained \u3c 50 mg of IgG/ml. The IgG concentration increased with parity (42.4, 68.6, 95.9 mg/ml in 1st, 2nd, and 3rd and later lactations, respectively). No differences in IgG concentration were observed among breeds or storage method, however, IgG was highest in samples collected in the Midwest and lowest in samples collected in the Southwest (79.7 vs. 64.3 mg/ml). Total plate count (TPC) of samples ranged from 3.0 to 6.8 Log10 cfu/ml with a mean of 4.9 Log10 cfu/ml (SD = 0.9) and was greater in samples collected in the Southeast compared with other regions of the country. Pooled samples had greater TPC than individual samples and refrigerated samples had greater TPC than frozen and fresh samples. Nearly 43% of samples collected had TPC \u3e 100,000 cfu/ml, 16.9% of the samples were \u3e 1 million. Only 39.4% of the samples collected met industry recommendations for both IgG concentration and TPC. These data suggest that nearly 60% of MC on dairy farms is inadequate, and a large number of calves are at risk of failure of passive transfer and/or bacterial infections. These data also suggests regional differences in MC quality

On Factors Affecting the Usage and Adoption of a Nation-wide TV Streaming Service

Using nine months of access logs comprising 1.9 Billion sessions to BBC iPlayer, we survey the UK ISP ecosystem to understand the factors affecting adoption and usage of a high bandwidth TV streaming application across different providers. We find evidence that connection speeds are important and that external events can have a huge impact for live TV usage. Then, through a temporal analysis of the access logs, we demonstrate that data usage caps imposed by mobile ISPs significantly affect usage patterns, and look for solutions. We show that product bundle discounts with a related fixed-line ISP, a strategy already employed by some mobile providers, can better support user needs and capture a bigger share of accesses. We observe that users regularly split their sessions between mobile and fixed-line connections, suggesting a straightforward strategy for offloading by speculatively pre-fetching content from a fixed-line ISP before access on mobile devices.Comment: In Proceedings of IEEE INFOCOM 201

The Socio Bosque Program for Rainforest and Paramo Conservation, Ecuador

The Socio Bosque Program is a state-funded, nation-wide program which provides financial incentive to participating forest landowners in exchange conservation of native forests and other types of native vegetation. The program's objectives include both ecosystem conservation and poverty alleviation goals on lands that belong to local and indigenous communities and individual households

An Investigation of Incongruency and Distraction Hypotheses: The Context of Dubbed TV Commercials

When one looks at the Television commercials scene in India, one easily sees three distinct patterns of communication. One is the nation-wide campaigns that are language neutral, meaning, they are purely music based. The other kind is a pure regional communications, with regional content starting from the language to the props used. The third variety is more like the ‘transition-ads’ that are between a pure nation-wide and a pure regional communication. These are basically nation-wide commercials dubbed in the regional languages, while not changing any part of the visual: thus they are ‘national’ with their visuals and regional with their sound track. The current study seeks to understand the effectiveness of such dubbed advertisements. Here incongruency and distraction hypotheses are investigated through two experiments. A social message against the use of cell-phones is used with students as target audience. The results of the first experiment while indicates distraction effects, the ANOVA tests have a very low power. The second experiment apart from repeating the first experiment with a little larger sample also looks at amount of counterarguments in the treatment conditions. The results of the second study do not validate any of the hypotheses. However the recall results are intriguing. Divided attention and incongruency are found to be two competing theories in explaining the recall effects of dubbed advertisements.

The governance of integrated regional development and the role of geographical information systems: Managing complex information relations between two different worlds

One the one hand the creation of a standardized and open geo-graphical infrastructure could facilitate the process of regional development, because the incentive for dysfunctional information politicking, in relation to the protection of specific interests and frames of reference, has to some extent disappeared. One the other hand there is possible tension between the need for tailor-made, regional focused planning solutions and the standardized nature of these nation wide infrastructures. What does the emergence of the standardized nation wide geographical information infrastructures, and the supply of information which can be generated by this infrastructure, imply for the process of co-production in local and regional, and thus contingent, urban and rural planning practices and the information and knowledge needs which are expressed in the local practices by relevant stakeholders? What does this imply for the management of information relations in these local planning and regional development practices. This is a relevant question because both the world of geographical system development and the world of integrated regional planning are separated worlds, with their own ‘rules’ and dynamic. In order to address this question we will look at a specific case of integrated regional planning and to look which factors facilitate or frustrate the effective and efficient coordination between the supply of information by these nation wide geographical infrastructures and the information needs of the actors, which are involved in a shared regional development process. This will be the Blue City initiative (‘Blauwe Stad’) in Groningen.