title: Exploiting web 2.0 forallknowledge-based information retrieval

authors: Milne, David N.

subjects: computer science

abstract: This paper describes ongoing research into obtaining and using knowledge bases to assist information retrieval. These structures are prohibitively expensive to obtain manually, yet automatic approaches have been researched for decades with limited success. This research investigates a potential shortcut: a way to provide knowledge bases automatically, without expecting computers to replace expert human indexers. Instead we aim to replace the professionals with thousands or even millions of amateurs: with the growing community of contributors who form the core of Web 2.0. Specifically we focus on Wikipedia, which represents a rich tapestry of topics and semantics and a huge investment of human effort and judgment. We show how this can be directly exploited to provide manually-defined yet inexpensive knowledge-bases that are specifically tailored to expose the topics, terminology and semantics of individual document collections. We are also concerned with how best to make these structures available to users, and aim to produce a complete knowledge-based retrieval system-both the knowledge base and the tools to apply it-that can be evaluated by how well it assists real users in performing realistic and practical information retrieval tasks. To this end we have developed Koru, a new search engine that offers concrete evidence of the effectiveness of our Web 2.0 based techniques for assisting information retrieval.

text: Exploiting web 2.0 forallknowledge-based information retrieval This paper describes ongoing research into obtaining and using knowledge bases to assist information retrieval. These structures are prohibitively expensive to obtain manually, yet automatic approaches have been researched for decades with limited success. This research investigates a potential shortcut: a way to provide knowledge bases automatically, without expecting computers to replace expert human indexers. Instead we aim to replace the professionals with thousands or even millions of amateurs: with the growing community of contributors who form the core of Web 2.0. Specifically we focus on Wikipedia, which represents a rich tapestry of topics and semantics and a huge investment of human effort and judgment. We show how this can be directly exploited to provide manually-defined yet inexpensive knowledge-bases that are specifically tailored to expose the topics, terminology and semantics of individual document collections. We are also concerned with how best to make these structures available to users, and aim to produce a complete knowledge-based retrieval system-both the knowledge base and the tools to apply it-that can be evaluated by how well it assists real users in performing realistic and practical information retrieval tasks. To this end we have developed Koru, a new search engine that offers concrete evidence of the effectiveness of our Web 2.0 based techniques for assisting information retrieval.

year: 2007

title: The impact of remittances on the monetary transmission mechanism in low-income countries

authors: Abdul Raheem, Jahan

subjects: remittances

abstract: This thesis consists of three studies investigating the impact of remittances on monetary transmission mechanisms. The prime objective of this research is to explore how the inflow of remittances affects the different monetary transmission channels in remittance-receiving economies and what other factors influence remittances in altering their effects on monetary transmission mechanisms. The first two studies were undertaken using a panel of 51 remittance-receiving countries, while the third study used Sri Lanka as the location. 

The first study investigates the effects of remittances on bank credit and exchange rate channels, using a panel Structural Vector Autoregression (SVAR) to investigate how remittances affect these intermediate monetary transmission channels. The estimated impulse responses (IRs) of bank credit and exchange rates to a shock in remittances show a significant variation between countries in responding to a shock in remittances. In the second stage, we regress the IRs of selected horizons on selected economically significant variables to find out what other factors contribute to this variation. The cross-sectional regression suggests that the magnitude of remittances in terms of the remittances-to-GDP ratio affects the exchange rates channel significantly. However, the effect of remittances on bank credit is determined by the level of remittance inflow and the savings-to-GDP ratio. More precisely, remittances significantly affect the bank credit channel in countries where the remittances-to-GDP ratio is higher than five percent of GDP. The overall findings of this study suggest that policymakers, especially in higher remittance-receiving countries, have to pay attention to the role remittances play in weakening the monetary transmission mechanism (MTM). 

The second study investigates how institutions play a role in altering the effects of remittances on the bank credit channel. There are arguments about whether remittances contribute to the expansion of credit in remittance-receiving countries. In this study, we use a panel SVAR model to estimate the IRs of bank credit to a shock in remittances and regress these IRs on a set of institutional and other economically significant variables. The regression results indicate that stronger corruption control and regulatory quality, along with savings-to-GDP and remittances-to-GDP ratios, are associated with credit expansion in response to remittances. This empirical finding indicates that monetary policy measures may have difficulty in achieving their objectives through bank credit in higher remittance-receiving countries, which have a strong corruption control and regulatory quality environment. 

The third study analyses how the effects of remittances vary with regard to bank credit, exchange rates, and asset price channels in the conflict and post-conflict periods in the Sri Lankan economy. We apply a country-specific SVAR model by using the monthly data from 1996 to 2019. The empirical analysis suggests that remittances significantly affect these monetary transmission channels in the post-conflict period, and their effects on bank credit and asset prices are relatively stronger than the exchange rate channel in this period.

text: The impact of remittances on the monetary transmission mechanism in low-income countries This thesis consists of three studies investigating the impact of remittances on monetary transmission mechanisms. The prime objective of this research is to explore how the inflow of remittances affects the different monetary transmission channels in remittance-receiving economies and what other factors influence remittances in altering their effects on monetary transmission mechanisms. The first two studies were undertaken using a panel of 51 remittance-receiving countries, while the third study used Sri Lanka as the location. 

The first study investigates the effects of remittances on bank credit and exchange rate channels, using a panel Structural Vector Autoregression (SVAR) to investigate how remittances affect these intermediate monetary transmission channels. The estimated impulse responses (IRs) of bank credit and exchange rates to a shock in remittances show a significant variation between countries in responding to a shock in remittances. In the second stage, we regress the IRs of selected horizons on selected economically significant variables to find out what other factors contribute to this variation. The cross-sectional regression suggests that the magnitude of remittances in terms of the remittances-to-GDP ratio affects the exchange rates channel significantly. However, the effect of remittances on bank credit is determined by the level of remittance inflow and the savings-to-GDP ratio. More precisely, remittances significantly affect the bank credit channel in countries where the remittances-to-GDP ratio is higher than five percent of GDP. The overall findings of this study suggest that policymakers, especially in higher remittance-receiving countries, have to pay attention to the role remittances play in weakening the monetary transmission mechanism (MTM). 

The second study investigates how institutions play a role in altering the effects of remittances on the bank credit channel. There are arguments about whether remittances contribute to the expansion of credit in remittance-receiving countries. In this study, we use a panel SVAR model to estimate the IRs of bank credit to a shock in remittances and regress these IRs on a set of institutional and other economically significant variables. The regression results indicate that stronger corruption control and regulatory quality, along with savings-to-GDP and remittances-to-GDP ratios, are associated with credit expansion in response to remittances. This empirical finding indicates that monetary policy measures may have difficulty in achieving their objectives through bank credit in higher remittance-receiving countries, which have a strong corruption control and regulatory quality environment. 

The third study analyses how the effects of remittances vary with regard to bank credit, exchange rates, and asset price channels in the conflict and post-conflict periods in the Sri Lankan economy. We apply a country-specific SVAR model by using the monthly data from 1996 to 2019. The empirical analysis suggests that remittances significantly affect these monetary transmission channels in the post-conflict period, and their effects on bank credit and asset prices are relatively stronger than the exchange rate channel in this period.

year: 2026

title: Identifying fisheries regions in New Zealand: Some conceptual difficulties

authors: Rennie, Hamish Gordon

subjects: Fisheries

abstract: The importance of fisheries to nations is reflected in the production and employment statistics of the country. It is also reflected in socio-cultural symbols (for instance songs, tales), and in socio-political hegemonies.  Just as these may vary from one nation to another, they may also vary from region to region within a nation.  Several nations speak openly in terms of 'fisheries regions' and there have been a number of attempts to identify such regions in the social science literature. An understanding of these regions is seen as step towards defining appropriate policies for the sustainable management of their resources.

In 1986, New Zealand established an innovative fishery management system based on individually transferable quota (ITQ), and subsequently removed the (never-implemented) region-based, fishery management planning structure from the statutes.  These changes might be indicative of a loss of geography, a flattening of the nation's "fishing topography", and might be expected to result in significant changes to the nature and location of fisheries regions.

This paper outlines the changes in the management structure of New Zealand's fisheries. We then attempt a preliminary analysis of fisheries regions in New Zealand as the basis for a "new regional" geography of New Zealand's fisheries. In the process we discuss various criteria for defining fishery regions and present our initial categorisation of New Zealand into those regions. The relationship between these regions and related institutional structures is then discussed. This raises a number of additional questions regarding the concept of a fisheries region, especially in the context of a resurgent indigenous (Maaori) culture, the emergence of new fishing peoples in New Zealand, and the respective size of recreational and commercial fishing sectors.

text: Identifying fisheries regions in New Zealand: Some conceptual difficulties The importance of fisheries to nations is reflected in the production and employment statistics of the country. It is also reflected in socio-cultural symbols (for instance songs, tales), and in socio-political hegemonies.  Just as these may vary from one nation to another, they may also vary from region to region within a nation.  Several nations speak openly in terms of 'fisheries regions' and there have been a number of attempts to identify such regions in the social science literature. An understanding of these regions is seen as step towards defining appropriate policies for the sustainable management of their resources.

In 1986, New Zealand established an innovative fishery management system based on individually transferable quota (ITQ), and subsequently removed the (never-implemented) region-based, fishery management planning structure from the statutes.  These changes might be indicative of a loss of geography, a flattening of the nation's "fishing topography", and might be expected to result in significant changes to the nature and location of fisheries regions.

This paper outlines the changes in the management structure of New Zealand's fisheries. We then attempt a preliminary analysis of fisheries regions in New Zealand as the basis for a "new regional" geography of New Zealand's fisheries. In the process we discuss various criteria for defining fishery regions and present our initial categorisation of New Zealand into those regions. The relationship between these regions and related institutional structures is then discussed. This raises a number of additional questions regarding the concept of a fisheries region, especially in the context of a resurgent indigenous (Maaori) culture, the emergence of new fishing peoples in New Zealand, and the respective size of recreational and commercial fishing sectors.

year: 1998-06-01