Abstract The nature of modern organizations needs to be increasingly adaptive, since they are dealing with a constant demand to respond to stimuli derived from the dynamic environments they operate in. Changing their capabilities is a common response, and this makes capability management a vital aspect of organizational survivability. To date, there are no approaches specifically designed to address this specific situation. KYKLOS and Compass are two interlinked approaches of different complexity, a DSML and a canvas, developed to support capability change. As recently developed methods, they lacked formal demonstration and evaluation; therefore, the goal of this article is to present the demonstration and evaluation of the two approaches by their stakeholders, in particular, business and modeling experts. A case study in a Swedish company in the ERP system consulting domain that is undergoing changes in its sales and consulting capabilities related to evolving customer requirements has been used to demonstrate and evaluate the two approaches. The process consisted of two evaluation cycles. The first cycle concerned KYKLOS and used two categories of evaluators, the business experts and the modeling experts. While the modeling experts evaluated positively the method, the business experts had difficulties associated with its ease of use and adoption. This resulted in the development of Compass, which was evaluated by business experts during the second evaluation cycle. Compass was evaluated more positively in terms of the difficult aspects, but the challenge is ongoing and motivates further future research.

Abstract Environmental dynamism is gaining ground as a driving force for enterprise transformation. To address the changes, the capabilities of digital enterprises need to adapt. Capability modeling can facilitate this process of transformation. However, a plethora of approaches for capability modeling exist. This study explores how concepts relevant to change have been implemented in the meta-models of these approaches, aiming to visualize relationships among change-related concepts, and identify ways to improve capability modeling toward a more efficient depiction of capability change. The concepts are visualized in concept maps, and a framework is developed to assist the classification of concepts relevant to change functions. Similarities and differences among the existing models are discussed, leading to suggestions toward improvements of capability modeling for capability adaptation.

This paper investigates different channel estimation methods for pilot based OFDM transmission systems. Based on a regular grid of pilot data the channel estimation is separated for time and frequency direction. For time direction linear and spline interpolation are used. In frequency direction also linear and spline interpolation are compared. In addition an estimation based on a DFT method is taken into account. Also the Wiener estimation approach is investigated both for interpolation in time and frequency direction. The methods are compared with respect to performance and implementation complexity. For simulation a DRM (digital radio mondiale) system is used.

Receiver synchronization, in terms of time and frequency, is one of the most important tasks designing an OFDM (orthogonal frequency division multiplex) receiver for coherent detection. Any LO (local oscillator) misalignment of the receivers analog front-end against the transmitter carrier frequency leads to ICI (inter carrier interference) and degrades the overall SNR. This paper introduces a frequency synchronization approach for an OFDM receiver based on the broadcast standard DRM (digital radio mondiale). Based on the desired synchronization bandwidth the procedure of synchronization is separated into two steps. First a rough offset is estimated and a pre-correction is accomplished. In a second step the remaining offset is estimated. Both algorithms are implemented before the actual FFT in the OFDM receiver and doesn't depend on any timing or robustness mode information. Both methods are based either on frequency pilots (references) or the information of the guard interval (cyclic prefix).

Composition of software services is a fundamental part in supporting enterprise business processes. Designed properly, executable processes can be used to closely support business processes by the integration of existing software services. In order to support business processes the design of the executable process must closely follow the business events and activities, as perceived by business actors. However, the design must also consider technical issues such as limitations in existing technology and systs. In this paper we examine how technical syst constraints influence the realization of business processes. Based on this examination we present a set of realization types that describes the transformation from a business process into its realization as an executable process. We also propose design criteria that need to be adhered to in order to cater to both business and technical needs.