scholarly journals Tree-Like Distributed Computation Environment with Shapp Library

Information ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 143
Author(s):  
Tomasz Gałecki ◽  
Wiktor Bohdan Daszczuk
Keyword(s):  
Task Force ◽  
Distributed Computation ◽  
Management Systems ◽  
Task Execution ◽  
Local Networks ◽  
State Spaces ◽  
Workload Management ◽  
Computing Power ◽  
Static Data ◽  
Short Time

Despite the rapidly growing computing power of computers, it is often insufficient to perform mass calculations in a short time, for example, simulation of systems for various sets of parameters, the searching of huge state spaces, optimization using ant or genetic algorithms, machine learning, etc. One can solve the problem of a lack of computing power through workload management systems used in local networks in order to use the free computing power of servers and workstations. This article proposes raising such a system to a higher level of abstraction: The use in the .NET environment of a new Shapp library that allows remote task execution using fork-like operations from Portable Operating System Interface for UNIX (POSIX) systems. The library distributes the task code, sending static data on which task force is working, and individualizing tasks. In addition, a convenient way of communicating distributed tasks running hierarchically in the Shapp library was proposed to better manage the execution of these tasks. Many different task group architectures are possible; we focus on tree-like calculations that are suitable for many problems where the range of possible parallelism increases as the calculations progress.

Towards Autonomic Workload Management in DBMSs

2011 ◽  
pp. 154-173 ◽  
Author(s):  
Baoning Niu ◽  
Patrick Martin ◽  
Wendy Powley
Keyword(s):  
Database Management ◽  
Work Flow ◽  
Management Systems ◽  
Differentiated Service ◽  
Computing Systems ◽  
Workload Management ◽  
Server Consolidation ◽  
Business Objective ◽  
High Utilization ◽  
Future Work

Workload management is the discipline of effectively managing, controlling and monitoring work flow across computing systems. It is an increasingly important requirement of database management systems (DBMSs) in view of the trends towards server consolidation and more diverse workloads. Workload management is necessary so the DBMS can be business-objective oriented, can provide efficient differentiated service at fine granularity and can maintain high utilization of resources with low management costs. We see that workload management is shifting from offline planning to online adaptation. In this paper we discuss the objectives of workload management in autonomic DBMSs and provide a framework for examining how current workload management mechanisms match up with these objectives. We then use the framework to study several mechanisms from both DBMS products and research efforts. We also propose directions for future work in the area of workload management for autonomic DBMSs.

The Effect of Problem Complexity, Computer Power, and Feedback Aids on the Accuracy and Completness of Computer Programs

1982 ◽  
Vol 26 (11) ◽  
pp. 989-993
Author(s):  
Edward M. Connelly
Keyword(s):  
Task Force ◽  
Computer Programs ◽  
Problem Solution ◽  
Problem Complexity ◽  
User Input ◽  
Multi Level ◽  
Time Required ◽  
Short Time ◽  
Force Problem ◽  
Solution Specification

An essential step in the development of a computer program is the specification of the solution logic to be implemented by the program. The importance of accurate problem solution specification is further stressed by researchers in programming language and artificial intelligence who suggest that in a relatively short time computer programs will be synthesized automatically and that the job of the user will be only to specify the problem solution. The research reported in this paper involved an investigation of the ability of computer users to specify problem solutions in the form of example solutions. This ability was evaluated as a function of the user's background and experience, the complexity of the available processor (i.e., degree of generalization of the inputs), and the available feedback aids. Further, the ability of experienced programmers to implement the problem solution in FORTRAN IV logic code was investigated. The research reported here is part of study in multi-level communications, both abstract and concrete (i.e., general statements and examples), that may provide a method for effective two-way communication between users and computers. Two participant groups (programmers and bookkeepers/accountants) working with three levels of problem complexity and three levels of processor complexity were used. The experimental task employed in this study required specification of a logic for solution of a Navy task force problem. This task involved choosing ships from a ship list which identified the ship type, the transiting time (the time required for the ship to get from its present position to the desired site), and stationing time (the number of days the ship can remain on station with available provisions). In addition to this specification of ship combinations, the participants had to specify by the example solution the range of transiting and stationing times required. It was found that both programmers' and bookkeepers/accountants' scores decreased with increasing levels of problem and processor complexity, but the scores for the bookkeepers/accountants were significantly less than those of the programmers. In a regression analysis it was found that the degree of computer generalization of the user input (processor complexity) explained more variance than did problem complexity. Further for those experiment conditions where little computer generalization of user input was provided, performance was significantly lower than for other experiment conditions. This result suggests that computer generalization of user inputs is an important factor to accurate specification of problem solutions. Finally, the results show that participant strategy in generating solutions was the most significant factor affecting performance. The strategy measures, which indicated the degree of systematization of the participants, explained 58 percent of the score variance.

Workload Management in Database Management Systems: A Taxonomy

2018 ◽  
Vol 30 (7) ◽  
pp. 1386-1402 ◽  
Author(s):  
Mingyi Zhang ◽  
Patrick Martin ◽  
Wendy Powley ◽  
Jianjun Chen
Keyword(s):  
Database Management ◽  
Database Management Systems ◽  
Management Systems ◽  
Workload Management

scholarly journals ALASKA INCIDENT MANAGEMENT SYSTEM (AIMS) GUIDE FOR OIL AND HAZARDOUS SUBSTANCE RESPONSE

2001 ◽  
Vol 2001 (2) ◽  
pp. 1059-1066
Author(s):  
Pamela Chelgren-Koterba ◽  
Larry Iwamoto ◽  
Charlene Hutton ◽  
Carl Lautenberger
Keyword(s):  
British Columbia ◽  
Management System ◽  
Ad Hoc ◽  
Task Force ◽  
Management Systems ◽  
Incident Management ◽  
Hazardous Substance ◽  
Single System ◽  
Management Guidelines ◽  
Response Team

ABSTRACT In January 2000, the ad hoc Alaska Statewide Oil and Hazardous Substance Incident Management System workgroup submitted standardized spill response management guidelines (Alaska Incident Management System, AIMS #1) to the Alaska Regional Response Team (ARRT) for their review, use, and feedback. These guidelines are a landmark step in response management systems because they merge the concepts of the National Contingency Plan (NCP#2) with NIIMS #3, received acceptance by both government and industry users in Alaska, have been customized to meet Alaska's unique needs, are consistent with the latest update being prepared by the States/British Columbia Task Force FOG #4 update workgroup, and will yield substantial savings to all users by providing guidelines for adoption and maintenance of a single system for the Alaska spill response community.

scholarly journals Vaccine prevention at the time of covid-19: the ASL Roma 4 experience

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
C Fusillo ◽  
E Galliano ◽  
G Belfiori ◽  
R Marchini ◽  
C Turci ◽  
...  
Keyword(s):  
Infectious Diseases ◽  
Home Health Care ◽  
Social Life ◽  
Health Workers ◽  
Task Force ◽  
Emergency Plan ◽  
Waiting Room ◽  
School Work ◽  
Preventive Actions ◽  
Short Time

Abstract The end of January 2020 WHO sanctioned an international public health emergency and the Italian government issued directives with urgent measures to counter and manage the epidemiological emergency: bans, suspensions of activities have profoundly changed school, work and health social life which have an impact on vaccination prevention Vaccinations Service (VS) of ASL Roma 4 vaccinates people of all ages and the healthcare professional (HP) noticed that the fear in the population is making the accesses less frequent and the vaccination coverage decrease and the infectious diseases will re-emerge. DPCM 4/3/2020 has established rules to contain the virus, the ASL task force and VS adopted and adapted them for a protected vaccination activity. Results Surgeries are cleaned more frequently and fomites have been removed. The rules were published on the ASL website, social networks, displayed on posters posted before entering the clinic and waiting rooms: vigilantes lets you enter without crowding the waiting room; only one parent enters; the adult enters alone; if you have a cough or sneeze cover your nose and mouth with a tissue or ask for the surgical mask, wash your hands with the disinfectant gel, sit only in the spaced chair. Inside the children find a nice poster with drawings to explain how to avoid the virus to be colored at home. Health care workers wear masks designed to calm children. As long as the epidemiological situation allows the vaccine prevention activity must be maintained. HP must give messages of trust for activities that are carried out safely. An emergency plan within the VS also provides the behavior to be used in the event that many health workers fall ill. At the time of Covid-2019 infection all forms of prevention are to be remodeled, not just vaccine prevention. Reducing the preventive actions could in a short time lead to the emergence of infectious diseases and not only with consequent important damages, including economic ones Key messages Healthcare professionals must give messages of trust for activities that are carried out safely. At the time of Covid-2019 infection all forms of prevention are to be remodeled, not just vaccine prevention.

scholarly journals A spatial-temporal description of the SARS-CoV-2 infections in Indonesia during the first six months of outbreak

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0243703
Author(s):  
Dewi Nur Aisyah ◽  
Chyntia Aryanti Mayadewi ◽  
Haniena Diva ◽  
Zisis Kozlakidis ◽  
Siswanto ◽  
...  
Keyword(s):  
Task Force ◽  
Geographical Location ◽  
Temporal Analysis ◽  
Published Data ◽  
Patient Profile ◽  
First Case ◽  
Time Period ◽  
Potential Availability ◽  
Diagnostic Capacity ◽  
Short Time

Background Since the first cases reported in Wuhan, China, in December 2019, the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) has spread worldwide. In Indonesia, the first case was reported in early March 2020, and the numbers of confirmed infections have been increasing until now. Efforts to contain the virus globally and in Indonesia are ongoing. This is the very first manuscript using a spatial-temporal model to describe the SARS-CoV-2 transmission in Indonesia, as well as providing a patient profile for all confirmed COVID-19 cases. Method Data was collected from the official website of the Indonesia National Task Force for the Acceleration of COVID-19, from the period of 02 March 2020–02 August 2020. The data from RT-PCR confirmed, SARS-CoV-2 positive patients was categorized according to demographics, symptoms and comorbidities based on case categorization (confirmed, recovered, dead). The data collected provides granular and thorough information on time and geographical location for all 34 Provinces across Indonesia. Results A cumulative total of 111,450 confirmed cases of were reported in Indonesia during the study period. Of those confirmed cases 67.79% (75,551/111,450) were shown as recovered and 4.83% (5,382/111,450) of them as died. Patients were mostly male (50.52%; 56,300/111,450) and adults aged 31 to 45 years old (29.73%; 33,132/111,450). Overall patient presentation symptoms of cough and fever, as well as chronic disease comorbidities were in line with previously published data from elsewhere in South-East Asia. The data reported here, shows that from the detection of the first confirmed case and within a short time period of 40 days, all the provinces of Indonesia were affected by COVID-19. Conclusions This study is the first to provide detailed characteristics of the confirmed SARS-CoV-2 patients in Indonesia, including their demographic profile and COVID-19 presentation history. It used a spatial-temporal analysis to present the epidemic spread from the very beginning of the outbreak throughout all provinces in the country. The increase of new confirmed cases has been consistent during this time period for all provinces, with some demonstrating a sharp increase, in part due to the surge in national diagnostic capacity. This information delivers a ready resource that can be used for prediction modelling, and is utilized continuously by the current Indonesian Task Force in order to advise on potential implementation or removal of public distancing measures, and on potential availability of healthcare capacity in their efforts to ultimately manage the outbreak.

scholarly journals Prediction of Flooded Compartment Damage Locations in Ships by Using Spectrum Analysis of Ship Motions in Waves

2021 ◽  
Vol 10 (1) ◽  
pp. 17
Author(s):  
Hye-young Son ◽  
Hyeon-dong Roh ◽  
Gi-yong Kim ◽  
Sang-jin Oh ◽  
Jin Choi ◽  
...  
Keyword(s):  
Initial Response ◽  
Ship Motion ◽  
Ship Motions ◽  
Test Cases ◽  
Computing Power ◽  
Loss Of Life ◽  
Motion Data ◽  
Significant Damage ◽  
Marine Accidents ◽  
Short Time

Considering the nature of marine accidents, even a single accident can result in significant damage to the environment and property, as well as loss of life. Therefore, the initial response should be rapid and accurate, and various decision support systems have been developed to achieve this. Research on simulating progressive flooding on board immediately after an accident is being actively conducted, but this requires high levels of computing power. In this study, a methodology for converting simulated ship motion data into a ship motion database is presented. The model of a training ship from the Korea Institute of Maritime and Fisheries Technology and KRISO in-house code SMTP was used for ship motion computations. The short-time Fourier transform was used to convert time-series motion data into a spectrogram motion database. A methodology for deriving a predicted location of the damage center is presented. The candidate locations of the damage centers were obtained by comparing the root mean square error values of the ship motion database from the simulation and real-time ship motion data. Finally, a probability function was suggested to confirm the predicted location of the damage center. Using 100 randomly selected test cases, our method showed 95% accuracy.

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