User-Initiated Commands for Text Formatting: Information and Syntax

1981 ◽  
Vol 25 (1) ◽  
pp. 607-611 ◽  
Author(s):  
Evelyn Williams

The study examined the effects of information load and syntax in user-initiated text formatting commands on the performance of computer-naive operators. Information load was varied through the number of parameters following the command and the number of alternatives for each parameter. Parameter values were specified using two types of syntax: mnemonic words and sequential numbers. Measures of operator response time and accurracy were taken on tests of command specification and command interpretation. Increases in the number of command parameters and number of alternatives per parameter contributed equally to increases in response time. Response time for word syntax was slower than numeric syntax. Performance improvements over tests were greater for word syntax than numeric syntax. The findings were interpreted as indicating the importance of the association value of words used in software languages which use English words.

2021 ◽  
Author(s):  
Daniel Ikechukwu Egu ◽  
Anthony John Ilozobhie

Abstract Attrition and paroxysm of highly inflammable petroleum products in storage tanks, pipelines and/or haulage trucks is increasingly becoming a scourging socio-environmental quandary with a detrimental effect on the Nigerian economy. Non availability of a holistic response time analytic master plan is a major enigma while industrial disaster managers perhaps are the major culprits since they are mostly not time cognizant for spry and pragmatic delivery of service. The aim of this exposition is to ruminatively carry out cerebral chronological corollary perusal for blitzing fire paroxysms and pipeline attrition in Nigeria on Microsoft excel spread sheet. Comprehensive data validation was done for all models by substituting all solutions of matrix into the predicted time response model. Results of predicted time response model in minutes for case A gave; 101x1 + 79x2 + 59x3 + 45x4 + 24x5 = 358. The predicted time response model for case B gave 78x1 + 56x2 + 43x3 + 30x4 + 13x5 = 260. The predicted time response model for case C gave; 74x1 + 56x2 + 42x3 + 29x4 + 10x5 = 252. Results of these models shows that the average cumulative response time dropped from 3.58 minutes to 2.52 minutes from case A to case C while the coefficients all reduced in their values from model A to C. Improving the source of data gathering and computational processes is recommended for enhancement of this study.


Author(s):  
Douglas Stephen Beck

The transient response of regenerators is considered. The time required for regenerators to reach steady-state effectiveness is determined. Theoretical results are presented. Also, experimental results that confirm the theory are presented. It is concluded that the time required for a regenerator to reach steady-state effectiveness is τss∼NTU1+hA′1+As′CRAT4As′1-SCkN×ρcDH2RNuH1-pp This expression indicates how regenerator cores can be designed for fast effectiveness response. In dimensionless form, τXss*∼1 where τXss* is the greater of the cool-flow and warm-flow heat-capacity rates, times τss, divided by the heat capacity of the core material. This expression gives a general method for calculation of the effectiveness-response time of regenerator cores. The dimensionless response time is nearly constant with variations in regenerator system-parameter values. Also, for sufficiently high dimensionless core-rotation rates, the dimensionless response time is independent of dimensionless core-rotation rate.


2019 ◽  
Vol 6 (1) ◽  
pp. 36
Author(s):  
I Made Karisma Wiguna ◽  
IGAK Djuni ◽  
P.K. Sudiarta

Advances in network technology have encouraged the development of ad-hoc services. MANET is one of them. In MANET, a routing protocol is required that can facilitate communication reliably. To get this reliable routing, in this study simulation of two routing protocols, namely AODV and OLSR. In the Manhattan Grid Mobility (MGM) model with communication loads using the FTP protocol. The simulation results show that the end-to-end value of service quality is 0.00210 second and throughput of 0.353428 Mbps for high FTP load in AODV routing. While the OLSR protocol routing obtained end to end delay value is 0.00071 second and throughput of 0.532025 Mbps for high load load FTP. For high load FTP traffic loads, 0.042436 second response time upload and 0.085789 second time response download on AODV protocol routing. On the OLSR routing protocol the upload time response rate is 0.084756 second response time and 0.09271 seconds download time response.


2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Jacob R Heldenbrand ◽  
Saurabh Baheti ◽  
Matthew A Bockol ◽  
Travis M Drucker ◽  
Steven N Hart ◽  
...  

Abstract Background Use of the Genome Analysis Toolkit (GATK) continues to be the standard practice in genomic variant calling in both research and the clinic. Recently the toolkit has been rapidly evolving. Significant computational performance improvements have been introduced in GATK3.8 through collaboration with Intel in 2017. The first release of GATK4 in early 2018 revealed rewrites in the code base, as the stepping stone toward a Spark implementation. As the software continues to be a moving target for optimal deployment in highly productive environments, we present a detailed analysis of these improvements, to help the community stay abreast with changes in performance. Results We re-evaluated multiple options, such as threading, parallel garbage collection, I/O options and data-level parallelization. Additionally, we considered the trade-offs of using GATK3.8 and GATK4. We found optimized parameter values that reduce the time of executing the best practices variant calling procedure by 29.3% for GATK3.8 and 16.9% for GATK4. Further speedups can be accomplished by splitting data for parallel analysis, resulting in run time of only a few hours on whole human genome sequenced to the depth of 20X, for both versions of GATK. Nonetheless, GATK4 is already much more cost-effective than GATK3.8. Thanks to significant rewrites of the algorithms, the same analysis can be run largely in a single-threaded fashion, allowing users to process multiple samples on the same CPU. Conclusions In time-sensitive situations, when a patient has a critical or rapidly developing condition, it is useful to minimize the time to process a single sample. In such cases we recommend using GATK3.8 by splitting the sample into chunks and computing across multiple nodes. The resultant walltime will be nnn.4 hours at the cost of $41.60 on 4 c5.18xlarge instances of Amazon Cloud. For cost-effectiveness of routine analyses or for large population studies, it is useful to maximize the number of samples processed per unit time. Thus we recommend GATK4, running multiple samples on one node. The total walltime will be ∼34.1 hours on 40 samples, with 1.18 samples processed per hour at the cost of $2.60 per sample on c5.18xlarge instance of Amazon Cloud.


2014 ◽  
Vol 21 (11) ◽  
pp. 929-937 ◽  
Author(s):  
David P. Hurford ◽  
Alex C. Fender ◽  
Jordan L. Boux ◽  
Courtney C. Swigart ◽  
Paige S. Boydston ◽  
...  

Objective: To examine the performance differences on the Test of Variables of Attention (TOVA) among different IQ level groups. Method: The present study examined the results of the TOVA with 138 elementary students aged 6 to 10 years who were assigned to one of four different groups based on their scores from the Wechsler Nonverbal Scale of Ability (WNV; low average: IQ < 90, average: IQ between 90 and 109, high average: IQ between 110 and 119, superior: IQ between 120 and 129, and very superior: IQ > 129). The latter two groups were combined. Results: On all TOVA measures (response time, response time variability, errors of omission and commission, and ADHD scores), intellectual functioning significantly influenced performance. Conclusion: The results of the present study indicate that performance on the TOVA was affected by intellectual functioning.


Author(s):  
Anggit Wicaksana ◽  
Bakhtiar Alldino Ardi Sumbodo

The role of IoT gateway on IoT network is vital, like for strengthen the sensor management. Accordingly, in this research designed an IoT gateway based on MQTT Protocol which implemented in Intel Edison platform and using ten node sensors with star topology.Results from this research is an IoT gateway system who capable to receive data packet from node sensor, saves the data in database, and publishes the data to MQTT broker. User able to do data acquisition by subscribe method, using MQTT Dasboard application. The system tested by doing the calculation of time response of gateway with variation of data length and variation of distance, life time of node sensor testing by the variation of data length. The conclusions are the time average of from data acquisition by node sensor until gateway saves the data in database and user subscribes the data is twelve seconds. The shorter the data length makes the response time of gateway faster and makes the life time of node sensor shorter because the measured current is bigger. The distance is not gives any impact to the response time of gateway.


2021 ◽  
Author(s):  
Holger Franz ◽  
Jens Niewöhner ◽  
Stefan Mühlenbrock

Abstract A new mixed-flow radial turbine design for industrial applications was developed and experimentally investigated. The presented mixed-flow turbine recovers energy in industrial processes, which have unused pressurized, hot off-gas available. The design parameter values are very similar to the ones of mixed-flow turbines for turbocharger applications. Consequently, a turbocharger design was used as starting basis. The mechanical requirements of the industrial application are less challenging for the turbine design. It was possible to extend the design space of the blades far beyond the typical radial fiber constraint, which is usually used to fulfill the mechanical restrictions. This gives more freedom for the parameters used in the blade geometry generation. The final design has an increased efficiency and operating range. In addition to a maximized design point efficiency, a wide operating range is one of the major requirements concerning the turbine performance. During the development process of the radial turbine’s wheel, an automated optimization was used. Due to the competitive design targets, multiple objectives and constrains were formulated. To satisfy the off-design efficiency requirements, each geometry was analyzed by means of six operating points. The mechanical integrity was checked by directly coupled FE simulations. The final design is further investigated and the reasons for the gained improvements are discussed. An experimental investigation of a prototype confirmed the numerically predicted improvements. A comparison of the measurements and the numerical results are shown. The objective of the paper is to show the possible potentials in efficiency and operating range of radial turbines with low mechanical restrictions. In many energy recovery applications, the operating conditions are well known and within clearly defined boundaries. For these applications, it is possible to engineer mixed-flow turbines primarily from the aerodynamical point of view ans secondly from the mechanical one. In the following described work, it was possible, starting from a good turbocharger design, to increase the turbine’s performance. An automatic multi-point and multi-physics optimization was set up to reach the performance improvements.


2016 ◽  
Vol 16 (2) ◽  
pp. 201-209 ◽  
Author(s):  
Jader Sant’Ana ◽  
Emerson Franchini ◽  
Vinicius da Silva ◽  
Fernando Diefenthaeler

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