Siirtosuhde

Siirtosuhde is a Finnish term that describes a transfer ratio or transfer relationship—the proportion by which something is moved, converted, or transmitted from one form, place, or state to another. The word is formed from siirto (transfer) and suhde (relationship or ratio), and its meaning depends on the specific domain in which it is used.

In engineering and physics, siirtosuhde typically refers to the ratio between output and input quantities in a transfer process. It is often dimensionless and used to express how effectively a system conveys energy, matter, or signals. For example, in electrical engineering the siirtosuhde of a transformer describes the voltage (or current) transformation from primary to secondary winding, influencing how a signal is scaled as it passes through the device.

In logistics, economics and operations research, siirtosuhde denotes the rate or extent of transfer between stages, locations, or processes. It can describe throughput, the share of items moved from one node to another, or the efficiency of information flow within a supply chain.

In biology and pharmacology, the term can describe transfer between compartments or tissues, such as the rate at which a drug or substance moves from one compartment to another. In these contexts, siirtosuhde is often expressed with units appropriate to the field, or as a dimensionless proportion.

Because the concept spans disciplines, the exact definition of siirtosuhde is context-dependent. When using the term, it is important to specify the domain, the quantities involved, and the directions of transfer to avoid ambiguity.