purpose: to determine the sensitivity and specificity of posterior corneal elevation in discriminating keratoconus and subclinical keratoconus from normal corneas by galilei and orbscan ii diagnosed on the basis of topography. methods: three groups (keratoconus, subclinical keratoconus and normal) were evaluated with galilei and orbscan ii and results were compared to those obtained by gold sta...

In modernen Fahrzeugen verrichten immer mehr elektronische und elektrische Komponenten und Steuergeräte ihren Dienst. Immer kürzer werdende Entwicklungszeiten und eine kurze Prototypenzeit erfordern neue Messverfahren zur Sicherstellung der EMV im Serienfahrzeug. Insbesondere dem störungsfreien Radioempfang kommt dabei eine besondere Rolle zu. Der Vergleich verschiedener Messverfahren mit Hilfe...

Die Ackerschlagkartei der Zukunft darf nicht viel Arbeit machen, muss dem Anwender aber einen hohen Nutzen liefern. RAMIS ist eine solche Schlagkartei. Dazu gehören auch der Empfang von Beratungsempfehlungen oder die Übernahme der einmal eingegebenen Daten für Anträge oder Nachweise.

in this study, we investigated the importance of vegetation and elevation in the determination of the diversity and abundance of rodents in geno biosphere reserve, hormozgan province. the study area was divided into seven plant types and four elevation classes. the binary similarity coefficients were used for the investigation of the plant types similarity base on the presence of rodents. the m...

one aspect of self-knowledge is consisted of interaction between soul and actions, ethics and knowledge. according to sadrā's opinion, soul is united with its acquired knowledge and long-term dispositions. the main principles of the theory include:nivocal of entity, (principality of existence) and its gradation) substantial motion of soul,identity of the knower and the known,bodily conting...

Depressions in landscapes function as buffers for water and sediment. A landscape with depressions has less runoff, less erosion and more sedimentation than a landscape without depressions. Sinks in digital elevation models (DEMs) can be existing features that correctly represent depressions in actual landscapes or spurious features that result from errors in DEM creation. In many erosion, land...

Topographically expressed zones of flow accumulation often coincide with fault intersections because of increased rock fracturing. We have conducted a study of the interrelationships between topographically expressed accumulation zones and fault intersections, and the function of these sites in landscape evolution. The investigation has been performed with the use of digital terrain models, geo...

Correction of digital elevation models (DEMs) for flat areas is a critical process for hydrological analyses and modeling, such as the determination of flow directions and accumulations, and the delineation of drainage networks and sub-basins. In this study, a new algorithm is proposed for flat correction/removal. It uses the puddle delineation (PD) program to identify depressions (including th...