The covariance of the number of renewals in a fixed time and the ensuing excess life

The covariance of the number of renewals in a fixed time N ^t and the ensuing excess life time Y ^t is derived using matrix-analytic methods for the stationary PH-renewal process. Specific results for the Erlang and hyperexponential processes are provided to illustrate the ease of computation. Properties concerning the sign and the behavior of the covariance as t→∞ are provided throughout. Parameter estimation for renewal processes which cannot be fully observed serves as the motivation for our derivations. These statistical applications as well as links to estimation for service time distributions in queues shed light on the type of problems for which the covariance is useful.     

Halving poverty in HIPC countries by 2015: How costly if achievable?

This article assesses the likelihood and costs of halving the poverty headcount ratio by 2015 from its 1990 levels in sixteen post-HIPC-MDRI countries. An optimistic pro-poor growth scenario indicates that, on average, they will attain this goal 2 years before the end date. An estimated annual cost of 16 percent of the recipients’ GDPs suggests that currently available funds will be sufficient to finance the MDG poverty target, provided that they achieve a 6 percent annual economic growth, improve their equality of incomes and implement policies to raise absorptive capacity to levels obtained by East Asian countries in the mid-1990s.     

Inclusive innovation and the role of technological capability-building: The social business Grameen Danone Foods Limited in Bangladesh

This article examines how a least developed country-based social business first creates operational capabilities (OCs) and then, over time, builds innovative capabilities (ICs) to fulfil a social need, be self-sustainable and achieve inclusive innovation. This relationship is examined in Bangladesh's Grameen Danone Foods Limited (GDFL) by integrating the technological capability and inclusive innovation theoretical frameworks and by using data gathered through extensive fieldwork. Broadly, our findings show how GDFL built and accumulated basic and intermediate ICs to undertake innovative activities in all areas of operation. Specifically, our findings scrutinize the process in which a social business develops and organizes its resources to initially build OCs and engage in the creation of ICs through various learning mechanisms to deliver inclusive innovation. From this process, we also observe a set of unpredicted positive spillovers to the community, which expands the inclusiveness effect. The findings also suggest that having a social orientation, triggers the use of different resources from within and outside the firm to achieve inclusive innovation. We conclude by discussing the study's implications for scholars, policy-makers and managers of multinational's social businesses. We also highlight future research areas, and crucially those related to key emerging conceptual limitations of inclusive innovation and development.     

On statistical models for multimodal optimization

A new approach for the construction of statistical models for multimodal optimization is proposed; the examples of such models are given. The results of the psychological experiment show that the proposed approach is intuitively acceptable.     

19世纪英国民族形象的历史建构——以形塑亚瑟王与罗宾汉为例

重述历史是为当下现实提供某种合法性的重要方式。中世纪传说中的＂亚瑟王＂和＂罗宾汉＂在19世纪被形塑为民族英雄,这正是加强民族认同和民族统一性的现实要求。随着两个角色更加深入人心,这种民族形象经历了从宏大政治话语向多面现实生活的转变。此外,亚瑟王和罗宾汉两个形象的差异也体现出英国民族性中对立、复杂和多元的一面。     

一个较精密的Hilbert型不等式

利用改进的Euler-Maclaurin求和公式以估算权系数的方法,建立了一个较为精密的Hilbert型不等式,作为应用考虑了它的等价式.     

H2O2催化湿式氧化酸性红B染料废水的研究

以自制的复合氧化物Fe2O3-NiO-CeO2/γ-Al2O3为催化剂氧化降解酸性红B染料废水,考察了进水pH值、反应温度、氧化剂及催化剂用量对COD去除率的影响。结果表明,在反应温度为90℃,进水pH为7,催化剂投入量2g（300mL废水）,双氧水用量18mL时,酸性红B的COD去除率可达到87.6%。     

Characterization of minimax linear estimators in linear regression

Two characterization theorems of the minimax linear estimator (Mile) are proven for the case, where the regression parameter varies only in an arbitrary ellipsoid. Furthermore, the existence, uniqueness and admissibility of Mile are shown. The explicit determination of Mile is carried out for a special case.     

Poverty eradication programs in Indonesia: Progress,challenges and reforms

This study explores the progress of and the challenges to poverty eradication programs in Indonesia by analyzing various social assistance programs and subsidies. Earlier poverty eradication programs such as food-based assistance and energy subsidies were only designed to increase households’ purchasing power. Later, the government also developed more advanced programs, such as conditional cash transfer, school assistance, and health insurance contribution assistance, to address long-run poverty by improving human capital quality. Common challenges of the existing programs remain, including inaccurate target the poor and lack of complementarity between programs. An exercise using a dynamic Computable General Equilibrium model shows that integrating programs into the conditional cash transfer reduces poverty further in rural and urban areas.     

Should commodity tax rates be uniform across regions in a heterogeneous country? Evidence from India

With countries increasingly adopting the Goods and Services Tax (GST) as their system of commodity taxes replacing the myriad of sales, excise and other form of indirect taxes, there is a move towards the two features that characterize the GST: uniform tax rates across items and identical tax rates across regions. When India introduced the GST in 2017, it followed several other countries in departing from the first feature but in keeping with universal practice embraced the second feature. The chief motivation of this paper is to subject this latter feature to critical scrutiny. The study examines the four GST rates in India by comparing them with counterfactual evidence based on preference based optimal commodity tax rates estimated by taking into account regional diversity in prices and spending. The benchmarking suggests that the current top GST rates (12%, 16% and 28%) are much higher than can be justified by the optimal rates. The Indian evidence is also in favor of departing from the universal practice in GST of adopting a uniform tax across items. The paper makes a methodological contribution by proposing a procedure for calculating spatial prices that can be applied to a wide basket of items. The study provides evidence on the redistributive potential of indirect taxation by showing the progressive nature of the optimal commodity taxes. The latter result is of particular significance in developing countries where indirect taxes raise the greater share of revenue and provide an important policy tool for tackling increasing inequality. The study concludes with a list of policy lessons as the country seeks to make further changes to its GST. While there is a significant literature on harmonization of indirect taxes across countries that belong to a single economic grouping such as the EU, there is no such literature between regions within a large heterogeneous country. The present study on tax harmonization between the states in India attempts to fill this gap.