most effective treatment for severe major depression. However, there continues to be controversy in the field about optimal methods for administering the treatment. In particular, electrode placement, that is, the anatomic location of the stimulus electrodes on the individual’s scalp, has been the subject of debate for more than 60 years. This debate centres around the balance of the antidepres...

An increasing number of applications such as risk evaluation in banking or inventory management require support for temporal data. After more than a decade of standstill, the recent adoption of some bitemporal features in SQL:2011 has reinvigorated the support among commercial database vendors, who incorporate an increasing number of relevant bitemporal features. Naturally, assessing the perfor...

To add time support to the relational model, both rst normal form (1NF) and non-1NF approaches have been proposed. Each has associated diiculties. Remaining within 1NF when time support is added may introduce data redundancy. The non-1NF models may be incapable of directly using existing relational storage structures or query evaluation technologies. This paper describes a new, conceptual tempo...

In this paper we propose an indexing structure for bitemporal databases. Such structure is based on two trees, one indexing valid time and another indexing transaction time. The trees share pointers to the actual data records, which are thus not duplicated. Bitemporal queries are processed by dividing the query in two parts, a valid time part and a transaction time part. Each tree is searched a...

  Background: Electrical injury is daily compromise of our life and upper and lower extremities   are common sites of injury .   Case Presentation: A 23 years old man who had suffered high voltage electrical injury referred   to our center. He had severe left upper extremity burn and suffered from head and thoracic   injuries due to falling down from high altitude.   Treatment: Fasciotomy of th...

A 40-year-old woman was referred to our hospital because of bitemporal hemianopsia at 23 weeks of gestation. A brain magnetic resonance imaging showed a pituitary tumor having suprasellar extension. At 30 weeks of gestation, she complained of rapidly deteriorating vision and bitemporal hemianopsia in both eyes and the ensuing radiological examination revealed increased tumor size, displaced tum...

Bitemporal databases record not only the history of tuples in temporal tables, but also record the history of the databases themselves. Indexing structures, which are a critical issue in traditional databases, became even more critical for bitemporal databases. We address this problem by investigating an incremental indexing structure based on R-trees, called the HR-tree, which was originally a...

A bitemporal database is a database explicitly supporting two temporal coordinates, namely the valid time and the transaction time. In this paper we introduce the concept of logical data partitioning in bitemporal databases, where data are partitioned into blocks according to their own natural (temporal) properties and independently on the particular application. In this framework we consider b...