foreign direct investment (fdi) plays a crucial role in the economic literature, especially in developing countries. it is also an important factor for policy makers to analyze the relation between foreign direct investment and other important economic variables. one of these variables is export which is always mentioned in iran's economic development programs. in this study, the relation betwe...

D uring the past few decades, national security plays a central role in the process of economic development. Also, foreign investment and trade have rapidly increased worldwide and have enhanced economic growth in developing countries. Although foreign investment and trade bring huge economic benefits, many developing countries fear that by opening up markets to competition and forei...

introduction & objective: foreign body ingestion is a common and important condition that can be life threatening if not diagnosed and treated properly. diagnosis is especially difficult in patients with unusual symptoms. this study was performed to determine the incidence and complications of foreign body ingestion in the patients referred to shiraz khalili hospital. materials & methods: in th...

Entity and referential integrity are the most fundamental constraints that any relational database should satisfy. We re-examine these fundamental constraints in the context of incomplete relations, which may have null values of the types \value exists but is unknown" and \value does not exist". We argue that in practice the restrictions that these constraints impose on the occurrences of null ...

Entity and referential integrity are the most fundamental constraints that any relational database should satisfy. We re-examine these fundamental constraints in the context of incomplete relations, which may have null values of the types “value exists but is unknown” and “value does not exist”. We argue that in practice the restrictions that these constraints impose on the occurrences of null ...

Referential integrity is an essential global constraint in a relational database, that maintains it in a complete and consistent state. In this work, we assume the database may violate referential integrity and relations may be denormalized. We propose a set of quality metrics, defined at four granularity levels: database, relation, attribute and value, that measure referential completeness and...

Prior studies have reported mixed findings on the impact of corporate information technology (IT) investment on firm performance. This study investigates the effect of corporate governance, an important management control mechanism, on the relation between IT investment and firm performance in the Taiwanese electronics industry. Specifically, we explore board independence and foreign ownership,...