Strategic Shared Leadership and Organizational Dynamic Capabilities

We propose that the purposeful sharing of strategic decisions and the process of making and taking those between the dominant coalition of an organization (Strategic Shared Leadership or SSL thereafter), initiated and supported by a focal strategic leader or small team, engenders Organizational Dynamic Capabilities (ODCs) though the transfer of individually-residing DCs within the SSL team, the transformation -co-creation of novel ones and their embeddedness-institutionalization within the organization. It also enhances organizational cognition which mediates the relationship by enriching co-created ODCs and their capacity to deliver reliably change through sensing, seizing and reconfiguring. Accordingly, SSL serves as a co-creator and key predictor of the emergence of ODCs. This helps address the challenges of DCs to marry stability with change, be predictable and to be capable of predicting.     

Exploring the unknown aspects of Roma community in Cyprus and the role of social work practice

The status quo of Roma communities in Europe is strongly marked by marginalisation and discrimination. Roma people tend to face social exclusion and segregation leading to lack of education, chronic unemployment and limited access to healthcare, housing and public services as well as widespread poverty. Very few studies have been conducted as far as Roma community in Cyprus are concerned and almost none has explored quality of life of this ethnic minority. Therefore, this article examines quality of life dimensions in approximately half of the population (n?=?156) residing in the catchment area. Both quantitative and qualitative results showed poor standards of living, high school dropout rates and high levels of marginalisation. Social work as discipline can foster a more empowering and coordinating role as to enhance Roma’s distinctive identity and improve standards of living.     

Minimizing the number of tardy jobs in two-machine settings with common due date

We consider two-machine scheduling problems with job selection. We analyze first the two-machine open shop problem and provide a best possible linear time algorithm. Then, a best possible linear time algorithm is derived for the job selection problem on two unrelated parallel machines. We also show that an exact approach can be derived for both problems with complexity \(O(p(n) \times \sqrt{2}^n)\), p being a polynomial function of n.     

Performance of the One-Sample Goodness-of-Fit P–P-Plot Length Test

This article studies the performance of the one-sample goodness-of-fit test which is based on the length of the P–P-plot initially introduced in a similar context by Reschenhofer and Bomze (1991 Reschenhofer , E. , Bomze , I. M. ( 1991 ). Length tests for goodness-of-fit . Biometrika 78 : 207 – 216 . [Google Scholar]). The distributional properties of the length test are revised empirically via simulations. In the Monte Carlo power study that follows the length test is shown empirically to have high power under various alternatives considered relative to members of the Cramér–von Mises family of goodness-of-fit tests, and the Kolmogorov–Smirnov test.     

Causal dynamics of poverty reproduction in EU countries

This study investigated causal mechanisms of poverty reproduction in EU countries by placing emphasis on the parental background effect on sons’ poverty risk after having controlled for endogeneity among observable and non‐observable effects of the involved mechanisms. The countries under investigation were old EU member states representing the four welfare regimes in the EU. Having employed path models and utilised EU‐SILC 2005 data, the analysis yielded no statistically significant direct effect of parental background on sons’ poverty risk in Denmark. Greece, however, exhibited a statistically significant and quite strong direct effect. Germany and the United Kingdom stood in‐between. Moreover, the analysis found indirect channels through which the parental background affects sons’ poverty risk. These findings are expected to enrich the academic discourse and inform the policy‐making process on poverty reproduction and social protection in the EU.     

Household size,income and expenditure on food: The case of Cyprus

This paper addresses some of the questions raised in a debate between Deaton and Paxson, 1998, Deaton and Paxson, 2003 and Gan and Vernon (2003) in the Journal of Political Economy. At issue is what, on the basis of theory, the behaviour of households should be in relation to expenditure on food, as household size increases. One argument is that expenditure on food, per capita, should increase as household size increases, but analysis of the data gives very different results. Questions arise as to whether food is a public or private good within households, how food compares to clothing and whether there can be substitution away from food, for example towards clothing.For the purposes of addressing these and related questions in the Cyprus context, a household budget survey was undertaken, in which 625 responses were obtained. The paper describes the survey and uses the results of the survey to run regressions to identify the variables that relate significantly to expenditure on food. What we add to the discussion is the analysis of the determinants of expenditure on food in Cyprus, and the categorisation of this expenditure into food at home, take-away food, food in pubs and cafes, and food in restaurants. Our results tend to support Gan and Vernon (2003); we find, for example, that clothing is more private than food.     

The subtle–blatant distinction of ethnic prejudice among ethnic majority chidren

Research on ethnic prejudice among children is important for contemporary multicultural schools seeking to enhance communication among students from different ethnic groups and provide effective intercultural education. Current scientific discourse points to the appearance of new implicit forms of prejudice, witnessed in modern multicultural societies, while traditional explicit prejudice tends to decline. However, empirical studies concerning the blatant–subtle distinction of prejudice in children are scarce. This paper examines ethnic prejudice in 329 ethnic majority preadolescents (aged 10–13?years) attending 10 urban and rural schools in central Greece. Data were collected using questionnaires constructed on the basis of focus group discussions with children, in addition to sociometric tests. Findings support the subtle–blatant distinction of prejudice in children and indicate that although blatant prejudice expressed as personal rejection is indeed low, perceptions of ethnic minority groups as a ‘problem’ for school life, as well as subtle prejudice, are substantial. Ethnic minority children are less popular and stigmatizing behaviour is common. Intimacy with an ethnic minority classmate is associated with lower levels of blatant prejudice at the individual level but the other forms of prejudice are not affected.     

Tight approximation bounds for combinatorial frugal coverage algorithms

We consider the frugal coverage problem, an interesting variation of set cover defined as follows. Instances of the problem consist of a universe of elements and a collection of sets over these elements; the objective is to compute a subcollection of sets so that the number of elements it covers plus the number of sets not chosen is maximized. The problem was introduced and studied by Huang and Svitkina (Proceedings of the 29th IARCS annual conference on foundations of software technology and theoretical computer science (FSTTCS), pp. 227–238, 2009) due to its connections to the donation center location problem. We prove that the greedy algorithm has approximation ratio at least 0.782, improving a previous bound of 0.731 in Huang and Svitkina (Proceedings of the 29th IARCS annual conference on foundations of software technology and theoretical computer science (FSTTCS), pp. 227–238, 2009). We also present a further improvement that is obtained by adding a simple corrective phase at the end of the execution of the greedy algorithm. The approximation ratio achieved in this way is at least 0.806. Finally, we consider a packing based algorithm that uses semi-local optimization, and show that its approximation ratio is not less than 0.872. Our analysis is based on the use of linear programs which capture the behavior of the algorithms in worst-case examples. The obtained bounds are proved to be tight.     

Hand-Hygiene Mitigation Strategies Against Global Disease Spreading through the Air Transportation Network

The risk for a global transmission of flu-type viruses is strengthened by the physical contact between humans and accelerated through individual mobility patterns. The Air Transportation System plays a critical role in such transmissions because it is responsible for fast and long-range human travel, while its building components—the airports—are crowded, confined areas with usually poor hygiene. Centers for Disease Control and Prevention (CDC) and World Health Organization (WHO) consider hand hygiene as the most efficient and cost-effective way to limit disease propagation. Results from clinical studies reveal the effect of hand washing on individual transmissibility of infectious diseases. However, its potential as a mitigation strategy against the global risk for a pandemic has not been fully explored. Here, we use epidemiological modeling and data-driven simulations to elucidate the role of individual engagement with hand hygiene inside airports in conjunction with human travel on the global spread of epidemics. We find that, by increasing travelers engagement with hand hygiene at all airports, a potential pandemic can be inhibited by 24% to 69%. In addition, we identify 10 airports at the core of a cost-optimal deployment of the hand-washing mitigation strategy. Increasing hand-washing rate at only those 10 influential locations, the risk of a pandemic could potentially drop by up to 37%. Our results provide evidence for the effectiveness of hand hygiene in airports on the global spread of infections that could shape the way public-health policy is implemented with respect to the overall objective of mitigating potential population health crises.