This paper focuses on product portfolio management in a large multinational medical device organisation. The contribution of this research is to provide insights into the nature, composition and decision making processes of product portfolios in a real world setting. The research is important because portfolio management decisions have a significant impact and influence the performance at each ...

risk assessment provides the possibility of planning and management to prevent and reduce the risk of desertification. the present study is aimed to assess the hazard and risk of desertification and to develop management programs in the semi-arid western regions of golestan province in iran. desertification rate was obtained using the iranian model of desertification potential assessment. since...

We reconsider necessary and suffcient conditions for dynamic inefficiency given in Zilcha (1990, 1991) and a critique by Rangazas and Russell (2005). First, we show that the characterization given in Zilcha (1990) for nonstationary economies is correct and complete Zilcha's proof. Second, using this insight, we complement Rangazas and Russell (2005)'s discussion of the counterexamples to Zilcha...

background: the aim of the study is to determine the correlation between clinical and echocardiographic fi ndings and risk factors of patients with suspected acute pulmonary thromboembolism (pte) who underwent computed tomography pulmonary angiography (ctpa). materials and methods: in this cross-sectional study, 310 hospitalized patients aged >18 years with high clinical suspicion of pte referr...

a r t i c l e i n f o In this paper, we explore the impact of investor time-horizon on an optimal downside hedged energy portfolio. The optimal heating oil hedge ratio is first calculated for a variety of downside risk objective functions at different time-horizons using the wavelet transform. Next, associated hedging effectiveness is contrasted for a range of risk metrics, with all metrics sho...

This paper introduces multi-criteria decision making (MCDM) into group decision making to propose a multi-criteria group decision making model for credit risk analysis. This model can not only deal with multi-criteria and complicated practical problems, but also reduce individual subjective preference to support group decision-making. In this model, experts’ opinion is integrated by post-expert...

The puzzle is that spreads on corporate bonds are about twice as large as can be explained by defaults, taxes and illiquidity. The higher a bond’s rating and the shorter its maturity, the greater is the puzzle. We use a large dataset of bonds to identify the relevant risk factors. Systematic factors fail to generate large spreads, regardless of whether they are conventional (market covariance, ...