Quality Marks, Metrics, and Measurement Procedures for Business Process Models

The availability of high-quality business process models is a central prerequisite for a successful process management. Nevertheless, in practice process models exhibit a large number of quality deficits, among them grammatical, content-related, and stylistic defects. In addition, there exist only very few approaches to determine the quality of business process models. In this paper, we present the 3QM-Framework, an analytical approach to systematically determine the quality of business process models. The 3QM-Framework makes three contributions: it provides quality marks, metrics, and measurement procedures to quantify the quality level as elements of a theoretically justified quality model. The applicability of the 3QM-Framework has been empirically evaluated in case studies. The results of a survey that was conducted among experts moreover attest its practical relevance.     

Productivity Growth,Import Leakage and Employment Growth in Puerto Rico, 1967–87

Using Puerto Rican input–output data that cover the period 1967–87, we find that employment growth was led primarily by a rapid increase in final output—5.1% per year—although labor productivity growth was also substantial, at 3.7% per year. Import leakages also fell over this period, but had little impact on employment growth. Local absorption was more successful than exports in generating new jobs. Employment generated by local absorption grew by 35% and that from exports by 29%, even though exports increased almost four-fold, while local absorption only doubled. The difference reflects the greater labor intensity of industries that supply local absorption. There was also a notable shift in the occupational structure toward white-collar employment and away from blue-collar jobs. The primary reason for this was the shift in the composition of final demand toward industries that rely heavily on white-collar workers. A secondary reason was a bias in technological change, which favored white-collar over blue-collar workers.     

Zur Schätzung eines Dichtefunktionals

Summary Fór the estimation of the functional (f)=f ²(x)dx Bhattacharyya andRoussas [1969] proposed an estimator based on the kernel-technique for density estimation. This paper describes a method, which rests on density estimations by orthogonal expansions. In the main we show the considered estimator to be consistent in the quadratic mean.     

Age,employability and the role of learning activities and their motivational antecedents: a conceptual model

In today's time of demographic change and rapid innovation, age and employability as well as the role of learning and development are high on the agenda of human resource managers and chief learning officers. However, existing research has failed to integrate these concepts in a clear model and offers little explanation of how the concepts may be linked exactly. In this conceptual paper we show how chronological age, despite its poor characteristics as a predictor, might still affect employability indirectly. Specifically, we propose that employees' motivation – in terms of future time perspective and goal orientation – and formal and informal learning activities need to be considered. Since an individual's chronological age cannot be changed, it is important to recognize these mediating variables, which may be targeted more easily by human resource development or age management initiatives.     

Vor der Bundestagswahl: Argumente für Mindestlöhne überzeugen nicht

For the first time ever, all political parties represented in the German Bundestag are proposing some form of minimum wage regulation in their federal campaigns. After sketching an overview of the vast empirical literature on the employment effects of minimum wages, which has yet to come to a consensus, the paper concentrates on the most common theoretical arguments for the view that minimum wages need not reduce the employment levels of affected workers. The authors find that those arguments are either conceptually inconsistent or assume market characteristics that can hardly describe the reality of low-wage labour markets. In the end, minimum wages are a blunt instrument to reduce poverty among workers — its primary objective — because it benefits many that are not poor and does not address the most important determinant of poverty in Germany, namely unemployment.     

Healthier when retiring earlier? Evidence from France

This paper contributes to the literature on the health-retirement relationship by looking at the effect of retiring before legal age on health in later life in France. To account for the endogeneity of the early retirement decision, our identification strategy relies on eligibility rules to a long-career early retirement scheme introduced in France in 2004 that substantially increased the proportion of older workers leaving their last job before the legal age of 60 years. We find a positive correlation between early retirement and health problems among male retirees. However, we fail to find any significant causal effect of early retirement on poor health once we account for the endogeneity of the decision to retire before the legal age. Controlling for working conditions does not influence the effect of retirement and occupying a demanding job is harmful to health after retirement regardless of the retirement date. Similar results are found for female retirees.     

Progressive Lending as an Enforcement Mechanism in Microfinance Programs

Microfinance programs are often characterized by progressive lending. A typical borrower receives at first very small amounts, which increase with good repayment conduct. The author rationalizes this feature of microfinance. It is shown that there is a strong tendency to split up projects into subprojects, and that it might be necessary to perform less productive projects first in order to keep pressure on the borrower to repay.     

De invloed van de keuze der gewichten op de hoogte van een gewogen indexcijfer

The influence of the choice of the weights on the value of an indexnumber.
Price and quantity indexnumbers are weighted averages of groups of price and quantity ratios and they are convenient instruments to indicate the general tendency of such groups, especially if the number of basic ratios is considerable. The frequent use of indexnumbers is due to the fact that they can often be applied to problems for which, strictly speaking, an indexnumber had to be used derived from the same group of ratios but based on a different set of weights.
Two typical examples of such problems are given.
The use of a set of weights differing from the appropriate one is only justified, however, when the indexnumber is rather insensitive to changes in the set of weights. A simple formula is derived showing that the relative change of an index-number due to a change in the set of weights is equal to the product of the (weighted) coefficient of variation of the basic ratios, the (weighted) standard deviation of the relative changes of the weights and the (weighted) coefficient of correlation of the ratios and of the relative changes. The system of weights used in the calculation of these three factors is the same and is equal to the set of true weights belonging to the problem under consideration.
The practical use of the formula is demonstrated at the problem of index-numbers of costs frequently encountered in the practice of cost accounting.