scholarly journals Incremental execution of temporal graph queries over runtime models with history and its applications

2021 ◽  
Author(s):  
Lucas Sakizloglou ◽  
Sona Ghahremani ◽  
Matthias Barkowsky ◽  
Holger Giese
Keyword(s):  
Temporal Logic ◽  
Structural Changes ◽  
Memory Storage ◽  
Software Systems ◽  
Multiple Model ◽  
Attributed Graph ◽  
History Of ◽  
Graph Queries ◽  
Temporal Graph ◽  
Runtime Models

AbstractModern software systems are intricate and operate in highly dynamic environments for which few assumptions can be made at design-time. This setting has sparked an interest in solutions that use a runtime model which reflects the system state and operational context to monitor and adapt the system in reaction to changes during its runtime. Few solutions focus on the evolution of the model over time, i.e., its history, although history is required for monitoring temporal behaviors and may enable more informed decision-making. One reason is that handling the history of a runtime model poses an important technical challenge, as it requires tracing a part of the model over multiple model snapshots in a timely manner. Additionally, the runtime setting calls for memory-efficient measures to store and check these snapshots. Following the common practice of representing a runtime model as a typed attributed graph, we introduce a language which supports the formulation of temporal graph queries, i.e., queries on the ordering and timing in which structural changes in the history of a runtime model occurred. We present a querying scheme for the execution of temporal graph queries over history-aware runtime models. Features such as temporal logic operators in queries, the incremental execution, the option to discard history that is no longer relevant to queries, and the in-memory storage of the model, distinguish our scheme from relevant solutions. By incorporating temporal operators, temporal graph queries can be used for runtime monitoring of temporal logic formulas. Building on this capability, we present an implementation of the scheme that is evaluated for runtime querying, monitoring, and adaptation scenarios from two application domains.

scholarly journals Keeping Pace with the History of Evolving Runtime Models

2021 ◽  
pp. 262-268
Author(s):  
Lucas Sakizloglou ◽  
Matthias Barkowsky ◽  
Holger Giese
Keyword(s):  
Memory Storage ◽  
Tool Support ◽  
Memory Consumption ◽  
Modeling Framework ◽  
Systematic Method ◽  
Operation Modes ◽  
History Of ◽  
Graph Queries ◽  
Key Features ◽  
Runtime Models

AbstractStructural runtime models provide a snapshot of the constituents of a system and their state. Capturing the history of runtime models, i.e., previous snapshots, has been shown to be useful for a number of aims. Handling, however, history at runtime poses important challenges to tool support. We present the InTempo tool which is based on the Eclipse Modeling Framework and encodes runtime models as graphs. Key features of InTempo, such as, the integration of temporal requirements into graph queries, the in-memory storage of the model, and a systematic method to contain the model’s memory consumption, intend to address issues which seemingly place limitations on the available tool support. InTempo offers two operation modes which support both runtime and postmortem application scenarios.

Understanding software evolution with software cities

2012 ◽  
Vol 12 (2) ◽  
pp. 200-216 ◽  
Author(s):  
Frank Steinbrückner ◽  
Claus Lewerentz
Keyword(s):  
Structural Changes ◽  
Software Evolution ◽  
System Development ◽  
Analysis Data ◽  
Software Systems ◽  
Mental Maps ◽  
Development History ◽  
History Of ◽  
Product And Process ◽  
The City

Software cities are visualizations of software systems in the form of virtual cities. They are used as platforms to integrate a large variety of product- and process-related analysis data. Their usability, however, for real-world software development often suffers from their inability to appropriately deal with software changes. Even small structural changes can disrupt the overall structure of the city, which in turn corrupts the mental maps of its users. In this article we describe a systematic approach to utilize the city metaphor for the visualization of evolving software systems as growing software cities. The main contribution is a new layout approach which explicitly takes the development history of software systems into account. The approach has two important effects: first, it creates a stable gestalt of software cities even when the underlying software systems evolve; thus, by preserving its users’ mental maps these cities are especially suitable for use during ongoing system development. Second, it makes history directly visible in the city layouts, which allows for supporting novel analysis scenarios. We illustrate such scenarios by presenting several thematic cities’ maps, each capturing specific development history aspects.

EXPLORING THE INTERNAL STRENGTHS AND WEAKNESSES OF THE ORGANIZATION

2018 ◽  
Vol 28 (1) ◽  
pp. 73-78
Author(s):  
Venelin Terziev ◽  
Marin Georgiev
Keyword(s):  
20Th Century ◽  
Structural Changes ◽  
Cumulative Effect ◽  
Professional Culture ◽  
Social Revolution ◽  
Modern Times ◽  
The World ◽  
History Of ◽  
Scientific Technical ◽  
The Subject

The subject of this article is the genesis of the professional culture of personnel management. The last decades of the 20th century were marked by various revolutions - scientific, technical, democratic, informational, sexual, etc. Their cumulative effect has been mostly reflected in the professional revolution that shapes the professional society around the world. This social revolution has global consequences. In addition to its extensive parameters, it also has intensive ones related to the deeply-rooted structural changes in the ways of working and thinking, as well as in the forms of its social organization. The professional revolutions in the history of Modern Times stem from this theory.Employees’ awareness and accountability shall be strengthened. The leader must be able to formulate and bring closer to the employees the vision of the organization and its future goal, to which all shall aspire. He should pay attention not to the "letter" but to the "spirit" of this approach.

scholarly journals Ultrasonographic Evaluation of the Shoulders and Its Associations with Shoulder Pain, Age, and Swim Training in Masters Swimmers

Medicina ◽  
2020 ◽  
Vol 57 (1) ◽  
pp. 29
Author(s):  
Yuta Suzuki ◽  
Noriaki Maeda ◽  
Junpei Sasadai ◽  
Kazuki Kaneda ◽  
Taizan Shirakawa ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Shoulder Pain ◽  
Structural Changes ◽  
Partial Tear ◽  
Increased Risk ◽  
High Prevalence ◽  
History Of ◽  
Long Head ◽  
Competitive Swimmers ◽  
Rotator Cuff Tendinopathy

Background and objectives: The long head of the biceps (LHB) and rotator cuff tendinopathy is the major cause of shoulder pain in competitive swimmers. The risk of tendinopathy increases with aging; however, the structural changes of LHB and rotator cuff in populations of masters swimmers have not been well examined. The purpose of this study was to investigate the prevalence of ultrasonographic abnormalities of the shoulders in masters swimmers, and the association of pain, age, and swim training with structural changes in this population. Materials and Methods: A total of 60 subjects participated in this study, with 20 masters swimmers with shoulder pain, 20 asymptomatic masters swimmers, and 20 sex- and age-matched controls. All swimmers completed a self-reported questionnaire for shoulder pain, their history of competition, and training volume. Each subject underwent ultrasonographic examination of both shoulders for pathologic findings in the LHB tendon, rotator cuff (supraspinatus (SSP) and subscapularis (SSC)) tendons, and subacromial bursa (SAB) of both shoulders and had thickness measured. Results: The prevalence of tendinosis (LHB, 48.8%; SSP, 17.5%; SSC, 15.9%), partial tear (SSP, 35.0%), and calcification (SSC, 10.0%) were higher in swimmers than in controls. LHB and SSP tendinosis were associated with shoulder pain. Older age and later start of competition were associated with an increased risk of LHB tendinosis and SSC calcification. Earlier initiation of swimming and longer history of competition were associated with an increased risk of SSP and SSC tendinosis. The thicker SSP tendon significantly increased the risk of tendinosis and partial tear. Conclusions: A high prevalence of structural changes in the rotator cuff and biceps tendons in masters swimmers reflects the effect of shoulder symptoms, aging, and swim training.

Democracy meets rangatiratanga: Playcentre's bicultural journey 1989-2011

2014 ◽  
Vol 43 (1) ◽  
pp. 31-45
Author(s):  
Suzanne Manning
Keyword(s):  
New Zealand ◽  
Structural Changes ◽  
World View ◽  
Education Programme ◽  
Content Type ◽  
Liberal Democratic ◽  
Public Commitment ◽  
History Of ◽  
Political Association ◽  
Consensus Decision Making

Purpose – The purpose of this paper is to trace the implementation of biculturalism in the New Zealand Playcentre Federation between 1989, when a public commitment to The Treaty of Waitangi was made, and 2011, when Tiriti-based co-presidents were elected. Design/methodology/approach – The data were drawn from the Playcentre Journal and papers from Playcentre National meetings, as well as from the author's experience as a Pākehā participating in Playcentre. The events are analysed using democratic theory. Findings – Despite a willingness to encompass biculturalism, the processes of democracy as originally enacted by Playcentre hindered changes that allowed meaningful rangatiratanga (self-determination) by the Māori people within Playcentre. The factors that enabled rangatiratanga to gain acceptance were: changing to consensus decision making, allowing sub groups control over some decisions, and the adult education programme. These changes were made only after periods of open conflict. The structural changes that occurred in 2011 were the result of two decades of persistence and experimentation to find a way of honouring Te Tiriti within a democratic organisation. Social implications – The findings suggest that cultural pluralism within a liberal democratic organisation is best supported with an agonistic approach, where an underlying consensus of world view is not assumed but instead relies on a commitment by the different cultures to retaining the political association within the structure of the organisation. Originality/value – Many organisations in New Zealand, especially in education, struggle to implement biculturalism, and the findings of this study could be useful for informing policy in such organisations. This history of Playcentre continues from where previous histories finished.

Judges, Juries, and the History of Criminal Appeals

2011 ◽  
Vol 29 (1) ◽  
pp. 297-302
Author(s):  
Benjamin L. Berger
Keyword(s):  
United States ◽  
Criminal Justice ◽  
Criminal Law ◽  
Legal History ◽  
Structural Changes ◽  
Criminal Procedure ◽  
The United States ◽  
Early History ◽  
Criminal Justice Systems ◽  
History Of

The three articles offered in this forum on the early history of criminal appeals do us the great service of adding much of interest on this important but neglected issue in the development of Anglo–North American criminal procedure. The opaqueness of the legal history of criminal appeals stands in stark contrast to their centrality and apparent naturalness in contemporary criminal justice systems in England, Canada, and the United States. These three papers look at the period leading up to and immediately following the creation of the first formalized system of what we might call criminal appeals, the establishment of the Court of Crown Cases Reserved (CCCR) in 1848. This key period in the development of the adversary criminal trial was marked by both a concerted political effort to codify and rationalize the criminal law and by profound structural changes in the management of criminal justice.

scholarly journals Features of Corporate Management of Mergers and Acquisitions Processes

2020 ◽  
Vol 11 (514) ◽  
pp. 424-429
Author(s):  
O. V. Ptashchenko ◽  
Keyword(s):  
Mergers And Acquisitions ◽  
World Economy ◽  
Structural Changes ◽  
Social Situation ◽  
Corporate Management ◽  
Industrialized Countries ◽  
Modern Development ◽  
The World ◽  
Business Efficiency ◽  
History Of

The article examines the main features and identifies the main trends in the global M&A market. The modern development of the economy is characterized by the spread of the processes of globalization, and it can be noted that, one way or another, the latest waves of mergers and acquisitions are tightly related to the flow of these processes. The history of mergers and acquisitions processes in the world economy shows that all surges in mergers and acquisitions agreements were and are accounted for periods of structural changes, industrial rises, technological revolutions, significant organizational restructuring of the world economy. Mergers and acquisitions of companies are one of the most important business development instruments in the market economy. The purposes of these processes are often the growth of company and the use of various kinds of synergies, which is manifested in strengthening its impact on markets and improving business efficiency. Most mergers and acquisitions agreements are concluded by industrialized countries, their role is increasing for developing countries. The dynamics of the M&A processes market will largely depend on the ability of companies to enter into large contracts announced either at the end of the past year or earlier this year. Only then it could it be stated that the growth of activity in the mergers and acquisitions market has become a long-term trend. Many experts believe that a new wave of M&A will inevitably lead to an increase in unemployment, and this, in turn, will lead to an aggravation of the social situation and require additional costs from the budget.

Catholic Social Teaching in an Era of Downsizing

2001 ◽  
pp. 87-105 ◽  
Author(s):  
Dennis P. McCann
Keyword(s):  
Business Ethics ◽  
Work Ethic ◽  
Structural Changes ◽  
Catholic Social Teaching ◽  
Social Teaching ◽  
Ethical Challenges ◽  
Knowledge Based ◽  
History Of ◽  
Robert Reich ◽  
Peter Drucker

The paper attempts to provide a basis for exploring the continued relevance of Catholic social teaching to business ethics, by interpreting the historic development of a Catholic work ethic and the traditions of Catholic social teaching in light of contemporary discussions of economic globalization, notably those of Robert Reich and Peter Drucker. The paper argues that the Catholic work ethic and the Church's tradition of social teaching has evolved dynamically in response to the structural changes involved in the history of modern economic development, and thus is well poised to speak to the ethical challenges implicit in the advent of a knowledge-based society. In order to test this thesis, the author sketches an approach to the ethicalchallenge of corporate downsizing that he believes illustrates the continued relevance of Catholic social teaching to business ethics.

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