Geographic information system concepts for land management

A Geographical Information System (GIS) has recently been developed for the assessment of the agricultural potential of the Southern African Development Community (SADC) region. The main value of this GIS is the integration of agricultural resource information from the SADC countries in order to support regional planning. The development of GIS technology makes it possible to compile, store, retrieve, analyse and display vast quantities of spatial data on, inter alia, the climate, topography, soils and infrastructure of the region. This article aims to give background information on the nature and general application of a GIS. Attention is given to the capabilities of a GIS, the spatial questions that drive analyses, basic database requirements, analytical and operational functions, as well as the applications of a GIS in land reform. More detail on the spatial agricultural resource data captured and its use by means of the SADC GIS will be described in a later article.     

Instability of Equilibria in Experimental Markets: Upward-Sloping Demands,Externalities, and Fad-Like Incentives

The objective of the paper is to study markets in which the value of the activity to any one person increases with the level with which the activity is undertaken by others. The general interpretation could be fads, mimicking behavior, or some sort of belief formation process in which the beliefs or expectations of agents about some underlying state of nature are influenced by the buying behavior of other agents. The result is to create a market that can be modeled as having an upward-sloping market demand curve. The questions posed are (i) in the fad-like environment, does the classical concept of equilibrium (as an equating of market demand and market supply) accurately predict market behavior; (ii) can both stable and unstable equilibria be observed; and (iii) which of the two classical concepts of stability best describes the conditions under which instability is observed? Under the conditions of a fad-like demand side externality in a market organized by the multiple unit double auction (MUDA), market equilibration occurs at a point where demand equals supply. The disequilibrium behavior follows the dynamics of the Marshallian model of dynamics, as opposed to the Walrasian model. These results confirm and extend the major findings of Plott and George who studied a similar environment with a downward-sloping supply.     

Time-Varying Response of Monetary Policy to Macroeconomic Conditions

We reject the hypothesis that the Federal Reserve's response to the macroeconomy over the period of 1953-1994 can be accurately represented with a fixed-parameter discrete choice model. Thus, we model the Fed's time-varying response with a nonlinear Kalman filter. The estimated time paths of the reaction function coefficients suggest that the Fed has responded countercyclically to movements in the price level except for the middle 1970s when it accommodated inflation. The Fed has generally responded countercyclically to unemployment and output during recessions. However, it has not maintained a countercyclical policy during nonrecessionary times until the 1980s.     

Survey of Recent Developments

Amid global economic uncertainty and tumbling world oil prices, Indonesia's economy faces pressure on its external balance and a continued growth slowdown. The government of President Joko Widodo (widely known as Jokowi) has set an agenda of reform, including simpler, faster investment licensing, historic cuts to fuel subsidies to generate fiscal savings, and increased spending on infrastructure. On the political side, Jokowi has had to deal with several political issues coming not only from parties in opposition but also from parties supporting his government, including during the formation of the new cabinet. We examine the consequences so far of the government's policy initiatives and of the policymaking process. While some initiatives have been implemented with success, some seem to have been launched without enough preparation, consultation, or empirical evidence, and many have been poorly communicated. Although inflation accelerated after the November fuel-price rise, efforts have been made to contain inflationary expectations and to mitigate the effects on poverty through social-assistance programs. The government took steps to cushion the impending impacts of higher fuel prices on vulnerable households by giving cash handouts of Rp 200,000 per month to 15.5 million disadvantaged families who receive the lowest level of welfare, and by promoting publicly funded education and health care. The partial removal of gasoline subsidies and the introduction of a fixed-subsidy policy for diesel in the revised 2015 budget reduce uncertainty about the fiscal position, although increases in government spending in infrastructure development were announced at the same time. The revised budget for 2015 increases spending on infrastructure development by 63% from the 2014 budget, mostly on projects to improve connectivity on land and at sea—such as the development of toll roads, railways, and ports—and to increase the performance of the agricultural sector. However, the recent drop in international oil prices forced the government to increase its target for tax revenue by 30% on last year's target, raising concerns about the effect of falling oil prices on the economy. Trade and investment policy reform is important in unlocking Indonesia's growth potential and improving the country's current external balance. Jokowi's administration, however, has been sending mixed signals about its position towards more open policies. The country has yet to recommence several trade negotiations that were postponed in 2014 and is still struggling to meet its commitments under the ASEAN Economic Community. Although improvement in investment procedures and licensing is currently underway, Indonesia needs to adopt a more positive attitude if it is to attract more investment.     

On the Sources of Inflation in Kenya: A Model‐Based Approach

We develop a semi‐structural new‐Keynesian open‐economy model – with separate food and non‐food inflation dynamics to study the sources of inflation in Kenya in recent years. To do so, we filter international and Kenyan data (on output, inflation and its components, exchange rates and interest rates) through the model to recover a model‐based decomposition of most variables into trends (or potential values) and temporary movements (or gaps) – including for the international and domestic relative price of food. We use the filtration exercise to recover the sequence of domestic and foreign macroeconomic shocks that account for business cycle dynamics in Kenya over the last few years, with a special emphasis on the various factors (international food prices, monetary policy) driving inflation. We find that while imported food price shocks have been an important source of inflation, both in 2008 and more recently, accommodating monetary policy has also played a role, most notably through its effect on the nominal exchange rate. We also discuss the implications of this exercise for the use of model‐based monetary policy analysis in sub‐Saharan African countries.     

Local Intergovernmental Competition and the Law of 1/n

This article proposes an empirical framework based on a synthesis of the seminal “Law of 1/n” and “Leviathan” theories, which models the relationship between government spending and the number of jurisdictions in a federal system as determined by the interplay of the costs related to centralized government (which fall as the number of jurisdictions increases) and the costs of distributive politics (which rise as the number of jurisdictions increases). Using a panel of U.S. state and local government spending data, empirical tests based on this combined framework show that the effect of intergovernmental competition predicted by the Leviathan model is partially offset by the Law of 1/n. This result helps explain the inconsistent findings in the previous empirical literature.     

Fame and the fortune of academic economists: How the market rewards influential research in economics

We analyze the pay and position of 1009 faculty members who teach in doctoral‐granting economics departments at 53 large public universities in the United States. Using the Web of Science, we have identified the journal articles published by these scholars and the number of times each of these articles has been subsequently cited in published research articles. We find that research influence, as measured by various measures of total citations, is a remarkably strong predictor of the salary and the prestige of the department in which professors are employed. We also examine the effect of coauthorship. Surprisingly, we find no salary penalty for sharing authorship; however, in terms of prestige of employing department, coauthorship is fully discounted.     

The political economy of Zimbabwean Urban informality since 2000 – A contemporary governance dilemma

ABSTRACT

The article explores the urban informality dilemma in Harare through the lens of a political economy theory. It examines the typologies of urban informality, the influence of political economy on urban informalities, and informs decision-making to address the urban informality dilemma. A qualitative approach was used where secondary data were collected through document analysis and primary data from interviews with 20 purposively selected key informants. Surveys and in-depth interviews were conducted with 585 individuals engaged in informal activities. It emerged that urban informality in Harare takes on different forms and aside from the economic crisis, politics played a role in the emergence and proliferation of urban informality. The article provides insight into, and raises awareness with regard to key areas of concern on how power influences decision-making relating to urban informality. Therefore, the article provides a basis for policy formulation and institutional reforms for effective measures to curb urban informality.     

Contrarian Investment in the Dutch Stock Market

The efficient markets hypothesis states that at any times security prices fully reflect all available information. Contrarian investment strategies do not recognize the efficiency of capital markets. They call for buying undervalued stocks, i.e. stocks with a low price relative to their fundamentals. The idea behind such a strategy is to take advantage of the extrapolation behaviour of naive investors. Using a fresh and extensive data set from the Dutch stock market, we found that these strategies yield an outperformance without a higher risk. Our results make it hard to maintain the efficient market hypothesis.