Статистические методы оценки времен первых вступлений по записям волнового акустического каротажа
A problem of automation of P- and S-wave first-arrival time evaluation for wave sonic logs has been considered. Opportunity to apply the statistical method used for seismic wave first-arrival time evaluation based on the Akaike criterion for processing of the wave sonic logs has been evaluated. A modification of the method to replace the variance calculation with a Hilbert transform modulus squared one – which can reduce the calculation time considerably – has been proposed.
Automatic electro-thermal analysis is included into Mentor Graphics PCB Design System. New software tool named TransPower is introduced to couple the electrical (Analog Designer) and thermal (BETAsoft) simulators. The design procedure is fully automated, human errors are eliminated, simulation time is significantly decreased, while accuracy and reliability are increased.
An IT security vulnerability can be considered as an inherent weakness in a target system that could be exploited by a threat source. The underlying hypothesis in our proposal is that each identified attribute associated with the target entity to be controlled should show the highest quality satisfaction level as an elementary indicator. The higher the quality indicator value achieved per each attribute, the lower the vulnerability indicator value and therefore the potential impact from the risk standpoint. In the present work, we discuss the added value of supporting the IT security and risk assessment areas with measurement and evaluation (M&E) methods and strategy, which are based on metrics and indicators. Also we illustrate excerpts of an M&E case study for characteristics and attributes of Security, and their potential risk assessment.
Purpose – This paper aims to depict foresight programmes as extended service encounters between foresight practitioners, sponsors, and other stakeholders. The implications of this perspective for evaluating the outcomes of such programmes are to be explored.
Design/methodology/approach – The range of activities comprising foresight is reviewed, along with the various objectives that may underpin these activities. The more substantial foresight programmes are seen in terms of a series of steps, in each of which various partners can be involved in generating service outcomes and later steps of the process. The arguments are illustrated with insights drawn from various cases.
Findings – A foresight programme is likely to feed into more than one policy process, so that the foresight activities can be linked to various stages of the policy cycles, as well as engaging participants with different degrees of inﬂuence on the policies in question. The outcomes of the foresight activity are also heavily shaped by the degree of involvement of various stakeholders, not least the sponsoring agency and any other groups it seeks to mobilise. Seeing foresight as a service activity brings to the fore the notion of co-production, and the importance of the design of the service encounters involved.
Research limitations/implications – The task of evaluating foresight is a challenging one, and comparison of foresight activities needs to bear in mind the different scale, scope, and ambitions of different programmes. Simple static comparison of formal inputs and outputs will miss much of the value and value-added of the activity.Practical implications – A dynamic approach to evaluation stresses the learning of lessons about the roles of multiple stakeholders – and the responsibilities of sponsors as well as practitioners. Originality/value – Foresight programmes are frequently commissioned, and often have signiﬁcant inﬂuence on decision-making. Attempts to systematically evaluate these efforts have begun, and this essay stresses the need to be aware of the complex interactive nature of foresight, highlighted by viewing it in service terms.
Automated electro-thermal analysis is realized in the last version of Mentor Graphics PCB Design System. The special software tool AETA is developed and integrated into the Expedition Enterprise PCB Design System to automate the process of power-temperature traffic between electrical and thermal simulators. Furthermore AETA provides the graphical user interface and the possibility to use the different versions of Mentor Graphics software.
Purpose - This paper presents a framework that is developed for analysis of intellectual capital transformation into companies’ value, including an identification of the key factors of this process.
Design/methodology/approach - The paper employs intellectual capital on the intersection of value-based management (VBM) and the resource-based view (RBV). Starting from a review of the results provided in the literature regarding intellectual capital (IC) evaluation and its link with firm performance, a system of proxy indicators related to IC transformation in both concepts has been designed. The evaluation ability of the developed model was justified using regression analyses.
Findings - A detailed algorithm for intellectual capital evaluation in terms of input–outcome transformation. The Intellectual Capital Transformation Evaluating Model (ICTEM) provides a holistic view of intellectual resources as companies’ strategic investments.
Research limitations/implications - The paper emphasizes that the ICTEM framework could be mostly applied for the analysis of a firm as a typical representative of the industry or the country. In that sense it is not applicable for specific feature analysis of a company.
Practical implications - The paper highlights the ICTEM as a tool of investment decisions, mostly taking into account common trends, the prospects of industries, and economies’ development.
Originality/value - The ICTEM provides the ostensive framework of intellectual capital transformation analysis using a statistical approach.
A model for organizing cargo transportation between two node stations connected by a railway line which contains a certain number of intermediate stations is considered. The movement of cargo is in one direction. Such a situation may occur, for example, if one of the node stations is located in a region which produce raw material for manufacturing industry located in another region, and there is another node station. The organization of freight traﬃc is performed by means of a number of technologies. These technologies determine the rules for taking on cargo at the initial node station, the rules of interaction between neighboring stations, as well as the rule of distribution of cargo to the ﬁnal node stations. The process of cargo transportation is followed by the set rule of control. For such a model, one must determine possible modes of cargo transportation and describe their properties. This model is described by a ﬁnite-dimensional system of diﬀerential equations with nonlocal linear restrictions. The class of the solution satisfying nonlocal linear restrictions is extremely narrow. It results in the need for the “correct” extension of solutions of a system of diﬀerential equations to a class of quasi-solutions having the distinctive feature of gaps in a countable number of points. It was possible numerically using the Runge–Kutta method of the fourth order to build these quasi-solutions and determine their rate of growth. Let us note that in the technical plan the main complexity consisted in obtaining quasi-solutions satisfying the nonlocal linear restrictions. Furthermore, we investigated the dependence of quasi-solutions and, in particular, sizes of gaps (jumps) of solutions on a number of parameters of the model characterizing a rule of control, technologies for transportation of cargo and intensity of giving of cargo on a node station.
Event logs collected by modern information and technical systems usually contain enough data for automated process models discovery. A variety of algorithms was developed for process models discovery, conformance checking, log to model alignment, comparison of process models, etc., nevertheless a quick analysis of ad-hoc selected parts of a journal still have not get a full-fledged implementation. This paper describes an ROLAP-based method of multidimensional event logs storage for process mining. The result of the analysis of the journal is visualized as directed graph representing the union of all possible event sequences, ranked by their occurrence probability. Our implementation allows the analyst to discover process models for sublogs defined by ad-hoc selection of criteria and value of occurrence probability
Existing approaches suggest that IT strategy should be a reflection of business strategy. However, actually organisations do not often follow business strategy even if it is formally declared. In these conditions, IT strategy can be viewed not as a plan, but as an organisational shared view on the role of information systems. This approach generally reflects only a top-down perspective of IT strategy. So, it can be supplemented by a strategic behaviour pattern (i.e., more or less standard response to a changes that is formed as result of previous experience) to implement bottom-up approach. Two components that can help to establish effective reaction regarding new initiatives in IT are proposed here: model of IT-related decision making, and efficiency measurement metric to estimate maturity of business processes and appropriate IT. Usage of proposed tools is demonstrated in practical cases.
This volume presents new results in the study and optimization of information transmission models in telecommunication networks using different approaches, mainly based on theiries of queueing systems and queueing networks .
The paper provides a number of proposed draft operational guidelines for technology measurement and includes a number of tentative technology definitions to be used for statistical purposes, principles for identification and classification of potentially growing technology areas, suggestions on the survey strategies and indicators. These are the key components of an internationally harmonized framework for collecting and interpreting technology data that would need to be further developed through a broader consultation process. A summary of definitions of technology already available in OECD manuals and the stocktaking results are provided in the Annex section.