Über die konstruktion der ausscheidetafel der aktiven

Abstract

In der technischen Behandlung der Invaliden- oder Krankenversicherung kommt die Aufgabe vor, aus der Gruppe der Lebenden die Gruppe der Aktiven auszuscheiden. Dies wird in der Praxis vielleicht ausnahmslos derart ausgeführt, dass die Gruppe derjenigen Invaliden gleichen Alters, welche im Laufe eines Jahres invalid werden, weiter Jahr für .Jahr verfolgt wird. Angenommen, dass die Anzahl der Aktiven in einem Zeitpunkt gegeben ist, lässt sich vermittels der gegebenen Wahrscheinlichkeiten die Anzahl der während eines Jahres invalid Gewordenen und am Ende des ersten Jahres und späterer Jahre lebenden Invaliden ermitteln. Die Ausscheidetafel der Aktiven wird auf diese Weise Schritt für Schritt von dem jüngsten Alter zu den höheren weiter aufgebaut.     

Optimal forest harvest age considering carbon sequestration in multiple carbon pools: A comparative statics analysis

We present an analytical model for determination of the economically optimal harvest age of a forest stand considering timber value, and the value of carbon fluxes in living biomass, dead organic matter, and wood products pools. Through comparative statics analysis, we find that consideration of timber value and fluxes in biomass carbon increase harvest age relative to the timber only solution, and that the effect on optimal harvest age of incorporating fluxes in the dead organic matter and wood products pools is indeterminate.We also present a numerical example to examine the magnitudes of these effects. In general, incorporating the dead organic matter and wood products pools have the effect of reducing rotation age. Perhaps more interestingly, when initial stocks of carbon in dead organic matter or wood products pool are relatively high, consideration of these pools can have a highly negative effect on net present value.     

Ethics as a Risk Management Strategy: The Australian Experience

This article addresses the connection of ethics to risk management, and argues that there are compelling reasons to consider good ethical practice to be an essential part of such risk management. That connection has significant commercial outcomes, which include identifying potential problems, preventing fraud, the preservation of corporate reputation, and the mitigation of court penalties should any transgression arise. Information about the legal position, examples of cases, and arguments about the potential benefits of ethics are canvassed. The orientation of this article is essentially Australian. It is hoped that it may provide some insights of value to other countries.     

Drivers of clothing disposal in the US: An exploration of the role of personal attributes and behaviours in frequent disposal

Clothing products remain important in today's consumer culture, but the sustainability of that consumption is questionable, as it often leads to excess waste. The purpose of this study was to explore the drivers of clothing waste, and to investigate the influence of demographic factors and personal attributes on disposal frequency. An online survey was conducted to over 500 men and women in the US from three different generational cohorts. The survey investigated fashion trend sensitivity, shopping frequency, quality and price consciousness as well as demographic factors, utilizing 5‐point Likert scales. On the basis of literature, seven hypotheses were developed. Correlational analysis, independent t‐test and one‐way analysis of variance were conducted to test the hypotheses. Results indicate that fashion trend sensitivity, fashion shopping frequency, higher incomes, younger age groups and being female are all positively correlated with frequent clothing disposal. Interestingly, quality consciousness was positively correlated to frequent clothing disposal, while price consciousness was negatively related to clothing disposal frequency. This study contributes to the literature by providing a more specific examination of the drivers of frequent clothing disposal and providing empirical evidence to support previous exploratory studies.     

Consumer choice for hearing aids and listening devices: newspaper advertisements for UK private sector provision

In the UK there can be several ways to access health care and this is true of hearing aid provision. Although there may appear to be a well‐defined distinction between the National Health Service (NHS) and independent dispenser hearing aid provision, there have been many examples of overlap between the two and recent government policy initiatives mean that distinctions have become less clear. This article outlines the changing relationship between the two sectors and the problems that potential consumers face accessing information on private sector options for amplification devices. A 1‐year sample of newspaper advertisements was content‐analysed for clarity of information provided. The analysis highlighted a range of provision, from well‐known hearing aid dispensers to the greyer areas of listening device retailers and intermediary services. Some advertisements were found to have been reported to the Advertising Standards Authority. Sufficiently misleading adverts may also infringe consumer protection legislation. The article concludes there is the possibility of consumer confusion about products and their potential for amelioration.     

A robust house price index using sparse and frugal data

In this article, we describe a house price index algorithm which requires only sparse and frugal data, namely house location, date of sale and sale price, as input data. We aim to show that our algorithm is as effective for predicting price changes as more complex models which require detailed or extensive data. Although various methods are employed for determining house price indexes, such as hedonic regression, mix-adjusted median or repeat sales, there is no consensus on how to determine the robustness of an index, and hence no agreement on which method is the best to use. We formalise an objective criterion for what a house price index should achieve, namely consistency between time periods. Using this criterion, we investigate whether it is possible to achieve strong robustness using frugal data covering only 66 months of transactions on the Irish property market. We develop a simple multi-stage algorithm and show that it is more robust than the complex hedonic regression model currently employed by the Irish Central Statistics Office.     

The value of formal planning for strategic decisions: Review of empirical research

A review of research from organizational behaviour supported the guidelines by corporate planners: that is, use an explicit approach for setting objectives, generating strategies, evaluating strategies, monitoring results, and obtaining commitment. To determine whether these findings could be applied to strategic decision making in organizations, a review was made of all published field research on the evaluation of formal planning. Formal planning was superior in 10 of the 15 comparisons drawn from 12 studies, while informal planning was superior in only two comparisons. Although this research did not provide sufficient information on the use of various aspects of the planning process, mild support was provided for having participation by stakeholders. Formal planning tended to be more useful where large changes were involved, but, beyond that, little information was available to suggest when formal planning is most valuable. Future research should assess the formal planning process, the situation in which it is used, and its effects on the total system.     

Costs and utilization of hemophilia A and B patients with and without inhibitors

Objective:

To evaluate the health system costs among patients with hemophilia A and B with and without inhibitors over 5 years.

Methods:

This was a retrospective, observational study utilizing medical and pharmacy electronic medical records and administrative encounters/claims data tracking US patients between 2006–2011. Patients with diagnosis codes for hemophilia A and B were identified. Patients with inhibitors were characterized by utilization of bypassing agents activated prothrombin complex concentrate or factor VIIa on two or more distinct dates. Severity was classified as mild, moderate, or severe based on laboratory tests of clotting factor.

Results:

There were 160 hemophilia A patients and 54 hemophilia B patients identified. From this group, seven were designated as patients with inhibitors (five with hemophilia A and two with hemophilia B). Hemophilia A patients without inhibitors reported 65 (41.9%) as being severe, 19 (12.3%) as moderate, and 71 (45.8%) as mild. Hemophilia B patients without inhibitors reported nine (17.3%) had severe, 13 (25.0%) had moderate, and 30 (57.7%) had mild hemophilia. All patients with inhibitors had been hospitalized in the previous 5 years compared to 64 (41.3%) with hemophilia A without inhibitors and 22 (42.3%) with hemophilia B without inhibitors. The median aggregate cost per year (including factor and health resource use) was $325,780 for patients with inhibitors compared to $98,334 for hemophilia A patients without inhibitors and $23,265 for hemophilia B patients without inhibitors.

Conclusions:

The results suggest that, while the frequency of inhibitors within the hemophilia cohort was low, there was a higher frequency of hospitalizations, and the associated median aggregate costs per year were 3-fold higher than those patients without inhibitors. In contrast, hemophilia B patients experience less severe disease and account for lower aggregate yearly costs compared to either patients with hemophilia A or patients with inhibitors.