In this paper a four-pole elliptic function bandpass filter is designed with two ground slots. A research of microstrip bandpass filters (BPF) using defected ground structures (DGS) is presented. DGS technique allows designs of tight couplings without the necessity of using very narrow coupling gaps. The simulator Sonnet is used to design the resonator and to calculate the coupling coefficient ...

In this paper we describe the range of values that can be taken by the fractional weak discrepancy of a poset and characterize semiorders in terms of these values. In [6], we defined the fractional weak discrepancy wdF (P ) of a poset P = (V,≺) to be the minimum nonnegative k for which there exists a function f : V → R satisfying (1) if a ≺ b then f(a) + 1 ≤ f(b) and (2) if a ‖ b then |f(a) − f...

background:  the metal  framework  of a removable partial denture includes various parts and metal components that supply strength, retention, stability ,  and support of partial denture.  the purpose of this study is assessing the quality of the frameworks made in  the  department of prosthodontics, qazvin school of  dentistry , regarding  their causes of malfunction,  retention, stability ,  ...

The fractional weak discrepancy of a poset P , written wdF (P ), is the least k such that some f : P → R satisfies f(y)− f(x) ≥ 1 for x ≺ y and |f(y)− f(x)| ≤ k for x‖y. We determine the minimal forbidden subposets for the property wdF (P ) ≤ k when k is an integer.

the importance and the necessity of huge investments in oil section, legal and financial frameworks adjusting the relationship between great investor companies and oil countries have long been important issues. the history of oil investment from colonial period endeavors to investigate the general frameworks defining the relationship between governments receiving the investment and companies. a...

Intel Corporation set itself a goal to reduce its global-warming greenhouse gas footprint by 20% by 2012 from 2007 levels. Through the use of sustainable IT, the Intel IT organization is recognized as a significant contributor to the company’s sustainability strategy by transforming its IT operations and overall Intel operations. This article describes how Intel has achieved IT sustainability b...

Hydrological models are created for a wide range of scales and intents. The Catchment Modelling Framework (CMF) extends the Python programming language with hydrology specific language elements, to setup specific hydrological models adapted to the scientific problems and the dominant flow processes of a particular study area. CMF provides a straightforward method to test hydrological theories a...