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Proposed Measures (proposed + measure)
Selected AbstractsReal Options, (Dis)Investment Decision-Making and Accounting Measures of PerformanceJOURNAL OF BUSINESS FINANCE & ACCOUNTING, Issue 3-4 2000Andrew W. Stark This paper suggests that a residual income-type measure of performance can be designed which supports optimal investment and disinvestment decision-making in a real options framework involving the options to wait before investing and to abandon. The measure has a number of advantages and disadvantages. Nonetheless, the balance of advantage versus disadvantage for the proposed measure must be set against the inadequacies of other competing measures of performance and associated organisational designs. Even if the measure of performance suggested is not regarded as practically useful, it has another general advantage , it can be used as a benchmark against which to evaluate other performance measures with regard to their support of optimal investment and disinvestment decision-making in a real options framework. [source] The actuation efficiency, a measure of acceleration capability for nonredundant robotic manipulatorsJOURNAL OF FIELD ROBOTICS (FORMERLY JOURNAL OF ROBOTIC SYSTEMS), Issue 12 2005Alan P. Bowling This article presents a performance measure, the actuation efficiency, which describes the imbalance between the end-effector accelerations achievable in different directions of nonredundant robotic manipulators. A key feature of the proposed measure is that in its development the differences in units between translational and rotational accelerations are treated in a physically meaningful manner. The measure also indicates oversized actuators, since this contributes to the imbalance in achievable accelerations. The development of this measure is based on the formulation of the dynamic capability equations. The shape of the dynamic capability hypersurface, which is defined by the dynamic capability equations, is a weak indicator of the level of imbalance in achievable end-effector accelerations. © 2005 Wiley Periodicals, Inc. [source] Measuring beta-diversity from taxonomic similarityJOURNAL OF VEGETATION SCIENCE, Issue 6 2007Giovanni Bacaro Abstract Question: The utility of beta (,-) diversity measures that incorporate information about the degree of taxonomic (dis)similarity between species plots is becoming increasingly recognized. In this framework, the question for this study is: can we define an ecologically meaningful index of ,-diversity that, besides indicating simple species turnover, is able to account for taxonomic similarity amongst species in plots? Methods: First, the properties of existing measures of taxonomic similarity measures are briefly reviewed. Next, a new measure of plot-to-plot taxonomic similarity is presented that is based on the maximal common subgraph of two taxonomic trees. The proposed measure is computed from species presences and absences and include information about the degree of higher-level taxonomic similarity between species plots. The performance of the proposed measure with respect to existing coefficients of taxonomic similarity and the coefficient of Jaccard is discussed using a small data set of heath plant communities. Finally, a method to quantify ,-diversity from taxonomic dissimilarities is discussed. Results: The proposed measure of taxonomic ,-diversity incorporates not only species richness, but also information about the degree of higher-order taxonomic structure between species plots. In this view, it comes closer to a modern notion of biological diversity than more traditional measures of ,-di-versity. From regression analysis between the new coefficient and existing measures of taxonomic similarity it is shown that there is an evident nonlinearity between the coefficients. This nonlinearity demonstrates that the new coefficient measures similarity in a conceptually different way from previous indices. Also, in good agreement with the findings of previous authors, the regression between the new index and the Jaccard coefficient of similarity shows that more than 80% of the variance of the former is explained by the community structure at the species level, while only the residual variance is explained by differences in the higher-order taxonomic structure of the species plots. This means that a genuine taxonomic approach to the quantification of plot-to-plot similarity is only needed if we are interested in the residual system's variation that is related to the higher-order taxonomic structure of a pair of species plots. [source] A Welfare Loss Measure of Unemployment with An Empirical IllustrationTHE MANCHESTER SCHOOL, Issue 2 2001Satya Paul Based on interpersonal comparisons, a welfare loss measure of unemployment is developed. The proposed measure is additively decomposable which enables us to assess the group-specific contribution to aggregate welfare cost. It possesses certain other desirable properties. It is sensitive to unemployment rate, mean duration of unemployment and the relative differences in the duration of unemployment. Since all these can vary differently over the years and across regions, the proposed measure is most suitable for comparing the welfare cost of unemployment over a period of time or across regions. An empirical exercise based on the Australian labour force survey data illustrates the usefulness and an easy applicability of the proposed measure. [source] Measuring Technical Change Under Variable Returns to Scale: A Dual ApproachBULLETIN OF ECONOMIC RESEARCH, Issue 1 2000Guang H. Wan In this paper, a dual measure of technical change is developed. The measure does not require parametric specification or estimation of the underlying technology, nor the assumptions of constant returns to scale and perfect competition. Imposing these assumptions, the proposed measure is shown to be equivalent to Solow's productivity residual. Biases attributable to these assumptions are analysed. [source] Fiscal Decentralisation and Empowerment: Evolving Concepts and Alternative Measures,FISCAL STUDIES, Issue 4 2008Jameson Boex H11; H70; H72 Abstract Decentralisation reforms are among the most common and significant public sector reforms, particularly in developing and transitional countries around the world. Despite the importance of the topic to policy practitioners and academic researchers alike and the extensive empirical research on the topic, there is consensus in the literature that the measures of decentralisation that are currently used are unsatisfactory. In response, we propose an alternative measure of fiscal decentralisation based on the notion that decentralisation is more than simply the inverse of centralisation. Following Bahl (2005), we consider fiscal decentralisation as ,the empowerment of people by the [fiscal] empowerment of their local governments'. Accordingly, we develop a measure of fiscal empowerment that allows us to quantify fiscal decentralisation as the gain in empowerment due to devolution and we analyse the proposed measures of empowerment and decentralisation for a cross-section of developing, transitional and industrialised countries. [source] Elimination of Third-series Effect and Defining Partial Measures of CausalityJOURNAL OF TIME SERIES ANALYSIS, Issue 5 2001Yuzo Hosoya Using the one-way effect extraction method, this paper presents a set of partial causal measures which represents quantitatively the interdependence between a pair of vector-valued processes in the presence of a third process. Those measures are defined for stationary as well as for a class of non-stationary time series. In contrast to conventional conditioning methods, the partial concept defined in the paper would be mostly devoid of feedback distortion by the third process. The paper also discusses statistical inference on the proposed measures. [source] Vladimir Putin on Raising Russia's Birth RatePOPULATION AND DEVELOPMENT REVIEW, Issue 2 2006Article first published online: 26 JUN 200 The total fertility rate in what is now the Russian Federation has been below replacement level during much of the last 40 years. By the late 1990s it was barely above 1.2 children per woman. There may have been some recovery since: the United Nations estimate for 2000,05 is 1.33. Other reports set the 2004 rate at 1.17. Countries elsewhere in Europe have fertility levels that are equally low or even lower, but the Russian demographic predicament is aggravated by mortality that is exceptionally high by modern standards. Thus, despite large-scale net immigration (mostly due to return of ethnic Russians from other republics of the former Soviet Union), the population in the last decade-and-a-half has been shrinking: of late by some 700,000 persons per year. The United Nations medium estimate assumes a steady recovery of the total fertility rate to reach a level of 1.85 by 2050 and a considerable improvement in survival rates during that period,notably an increase in male life expectancy at birth of more than ten years. It also assumes further modest net immigration at a steady rate, amounting to a total of somewhat over 2 million by midcentury. Under these stipulations the projected population of Russia in 2050 would be 112 million,some 31 million below its present size. By that time, 23 percent of the population would be aged 65 and older. The government's concern with the demographic situation of the country and its intent to improve it have been manifest in various official statements, notably in the annual State of the Nation Address given by the president to the Federal Assembly (or State Duma). Formerly a subordinate theme (see the Documents item in the June 2005 issue of PDR), the issue constituted the centerpiece of the 2006 Address, delivered on 10 May in the Kremlin by President Vladimir Putin. Policies regarding health and mortality were given short shrift in the speech,road safety, bootleg alcohol, and cardiovascular diseases being singled out as areas of special concern. The president's remarks on immigration are of greater interest: immigration of skilled persons is to be encouraged. They must be educated and law-abiding and must treat the country's culture and national tradition with respect. The main focus of the address, however, was on the birth rate and policies to be introduced to raise it. (The need for an "effective demographic policy" as seen from the Kremlin was of course also voiced in the later stages of the Soviet era. See, for example, the excerpts from the addresses delivered by then Party Chairman Leonid Brezhnev and Premier Nikolai Tikhonov to the 26th Congress of the Communist Party of the Soviet Union in February 1981 that appear in the Documents item in the June 1981 issue of PDR.) In detail and specificity, and also in terms of the economic cost of the measures envisaged, Putin's speech is without parallel in addressing population policy matters by a head of state in Europe. The demo graphically relevant portion of the address is reproduced below in the English translation provided by the website of the president's office «http://www.kremlin.ru/eng». Calling Russia's demographic situation "the most acute problem facing our country today," Putin terms its causes as "well known," but lists only economic factors, presumably because these, at least in principle, lend themselves to remedial measures that the Russian government, its coffers now swollen with petrodollars, should be able to provide. His starkly economic interpretation of the problem of low fertility (in Russia apparently taking the form of convergence to a single-child pattern) may be overly optimistic. Causes of electing to have only one child may lie deeper than those Putin names: low incomes, inadequate housing, poor-quality health care and inadequate educational opportunities for children, and even lack of food. Putin's proposed policies to attack these problems in part consist of a major upgrading of existing child care benefits: to 1,500 roubles a month for the first child and 3,000 roubles for the second. The latter amount is roughly equivalent to US$113, a significant sum given Russian income levels. Maternity leave for 18 months at 40 percent of the mother's previous wage (subject to a ceiling) and compensation for the cost of preschool childcare round out the basic package proposed. Benefits are to be parity-dependent, highlighting the pronatalist intent of the measures. Thus the child benefit for the second child is to be twice as large as for the first, and payment for preschool childcare is to cover 20 percent of parental costs for the first, 50 percent for the second, and 70 percent for the third child. Putin mentions "young families" as recipients, but the payments are clearly directed to mothers. (Even the usually obligatory reference to western European,style paternity leave is missing.) The most innovative element of the proposed measures, however, is support for women who have a second birth. The state should provide such women (not the child, as called for in some European precedents) "with an initial maternity capital that will raise their social status and help resolve future problems." Citing expert opinion, Putin says that such support "should total at least 250,000 roubles [about $9,300] indexed to annual inflation." Evidently assuming, optimistically, that there will be many takers, Putin says that carrying out all these plans will require not only a lot of work but also "an immense amount of money." The measures are to be launched starting January 2007. [source] Seeking a sound index of competitive intensity: Application to the study of biomass production under elevated CO2 along a nitrogen gradientAUSTRAL ECOLOGY, Issue 4 2002MARIE-LAURE MAYAS Abstract The aim of this paper is to evaluate (i) the relevance of currently proposed measures of competitive intensity to elevated CO2 studies by means of an example analysis, hypothesizing that competitive intensity is increased under elevated CO2; and (ii) an alternative method for predicting species performance in mixtures from monocultures. Relative competition intensity (RCI), relative physiological performance and normalized ecological performance were used to characterize the competitive ability of two grasses (Danthonia riclwrdsonii Cashmore, Phalaris aquatica L.) and two legumes (Lotus pedunculatus Cav, Trifoliuni repens L.) grown in monocultures and mixtures of the four species along a N gradient under conditions of ambient and elevated CO2. Relative competition intensity could not be used to predict competitive outcomes in mixtures under conditions of elevated CO2 because it failed to account for changes in the size of interspecific differences along the N gradient and between CO2 concentrations. Relative physiological performance and relative ecological performance were more useful for investigating biomass production in mixtures and to predict species performance in mixtures from their performance in monocultures. Both indices of relative performance showed an increase in competitive intensity under elevated CO2 conditions. They also showed a decrease in competitive intensity with increasing N supply over most of the range of N supply, but a reversal of that trend at high levels of N supply. The merits and utility of these relative performance indices for elevated CO2 are discussed. [source] Dangerous and severe parenting disorder?CHILD ABUSE REVIEW, Issue 4 2003Personality disorder, new legal proposals, parenting Abstract The Government has proposed new legal measures for the management of people with personality disorders who are dangerous to others. In this paper, it is argued that there is no reason why these proposed measures should not apply to those individuals with personality disorders who are parents and present a severe risk of harm to their own children. New measures that provided a legal and clinical framework for the provision of assessment and possible therapy for personality disordered parents who pose a risk to their children would ful,l a real need which is not being met. Copyright © 2003 John Wiley & Sons, Ltd. [source] National guidelines for the control and prevention of methicillin-resistant Staphylococcus aureus,what do they tell us?CLINICAL MICROBIOLOGY AND INFECTION, Issue 9 2007H. HumphreysArticle first published online: 30 JUN 200 Abstract Guidelines to control and prevent methicillin-resistant Staphylococcus aureus (MRSA) infection are available in many countries. Infection control and prevention teams determine local strategies using such national guidelines, but not all guidelines involve a rigorous assessment of the literature to determine the strength of the recommendations. Available guidelines drafted by national agencies or prominent professional organisations in Germany, New Zealand, North America, The Netherlands, Ireland and the UK were reviewed. Significant literature reviews were a component of guidelines from the UK and North America. Recommendations were not graded on the strength of the evidence in guidelines from New Zealand and The Netherlands. The Netherlands, a country with a very low prevalence of MRSA, had the simplest set of guidelines. Few of the recommendations in any of the guidelines achieved the highest grading, i.e., based on well-designed, experimental, clinical or epidemiological studies, even though the logic of the proposed measures is clear. The onset of community-acquired MRSA is reflected in the recent publication of guidelines from North America. New developments, such as rapid testing and mathematical modelling, are of importance in helping to control MRSA in settings of both low and high endemicity. National guidelines are increasingly evidence-based, although good scientific studies concerning some aspects of MRSA control are lacking. However, general principles, e.g., early detection and isolation, are recommended by all guidelines. There is still a role for consensus and the opinion of experts in devising national guidelines. [source] | |||||||||||||