Computerized tests and time: measuring, limiting and providing visual cues for response time in on-line questioning

1989 ◽  
Vol 8 (5) ◽  
pp. 335-351 ◽  
Author(s):  
SHEIZAF RAFAELI ◽  
NOAM TRACTINSKY
Keyword(s):  
Response Time ◽  
Visual Cues ◽  
Computerized Tests ◽  
On Line

scholarly journals AN ON-LINE NON-LEPTONIC NEURAL TRIGGER APPLIED TO AN EXPERIMENT LOOKING FOR BEAUTY

1994 ◽  
Vol 05 (05) ◽  
pp. 863-870
Author(s):  
C. BALDANZA ◽  
F. BISI ◽  
A. COTTA-RAMUSINO ◽  
I. D’ANTONE ◽  
L. MALFERRARI ◽  
...  
Keyword(s):  
Neural Network ◽  
Response Time ◽  
Enrichment Factor ◽  
Data Stream ◽  
Particle Production ◽  
Event Sample ◽  
On Line

Results from a non-leptonic neural-network trigger hosted by experiment WA92, looking for beauty particle production from 350 GeV π− on a Cu target, are presented. The neural trigger has been used to send on a special data stream (the Fast Stream) events to be analyzed with high priority. The non-leptonic signature uses microvertex detector data and was devised so as to enrich the fraction of events containing C3 secondary vertices (i.e, vertices having three tracks whith sum of electric charges equal to +1 or -1). The neural trigger module consists of a VME crate hosting two ETANN analog neural chips from Intel. The neural trigger operated for two continuous weeks during the WA92 1993 run. For an acceptance of 15% for C3 events, the neural trigger yields a C3 enrichment factor of 6.6–7.1 (depending on the event sample considered), which multiplied by that already provided by the standard non-leptonic trigger leads to a global C3 enrichment factor of ≈150. In the event sample selected by the neural trigger for the Fast Stream, 1 every ≈7 events contains a C3 vertex. The response time of the neural trigger module is 5.8 μs.

N and P on-line meters: requirements, maintenance and stability

1996 ◽  
Vol 33 (1) ◽  
pp. 147-157 ◽  
Author(s):  
Henrik A. Thomsen ◽  
Kenneth Kisbye
Keyword(s):  
Sample Preparation ◽  
Response Time ◽  
Ammonium Nitrate ◽  
State Of The Art ◽  
List Price ◽  
User Friendliness ◽  
On Line ◽  
The Cost ◽  
Preparation Design

State-of-the-art on-line meters for determination of ammonium, nitrate and phosphate are presented. The on-line meters employ different measuring principles and are available in many different designs differing with respect to size, calibration and cleaning principle, user-friendliness, response time, reagent and sample consumption. A study of Danish experiences on several plants has been conducted. The list price of an on-line meter is between USD 8000 and USD 35,000. To this should be added the cost of sample preparation, design, installation and running-in. The yearly operating for one meter are in the range of USD 200-2500 and the manpower consumption is in the range of 1-5 hours/month. The accuracy obtained is only slightly smaller than the accuracy on collaborative laboratory analyses, which is sufficient for most control purposes.

Investigation of Calorimetric Method inside the Fermentation Process of Glutamic Acid

2011 ◽  
Vol 236-238 ◽  
pp. 938-941
Author(s):  
Zheng Ming Tong ◽  
Jia Lei Lu ◽  
Chao Li ◽  
Kai Zhu
Keyword(s):  
Dissolved Oxygen ◽  
Response Time ◽  
Glutamic Acid ◽  
Fermentation Process ◽  
Culture Fluid ◽  
Calorimetric Method ◽  
Simple Alternative ◽  
On Line

In bioreactor, it often monitors some procedure parameters such as temperature, pH , and dissolved oxygen values to monitor fermentation process, but these parameters may be instability and delayed. Calorimetry hasn’t distinctiveness, virulence and doesn’t be sensitive to electrochemistry. So it can be used in some kind of culture fluid, even so it can be used in muddy fluid that photometers can’t be used in. Relative to other monitoring ways, calorimetry’s response time is short, so calorimetry is well suited to monitor bioprocesses on line. Calorimetry only needs normal standardize monitoring units, and this normal standardize monitoring units is be widely used in industry. Calorimetry as a simple alternative is beginning to be used in monitor bio-fermentation process.

scholarly journals Age differences in the use of implicit visual cues in a response time task

2019 ◽  
Vol 13 (2) ◽  
pp. 86-93 ◽  
Author(s):  
Jose Angelo Barela ◽  
Anselmo A Rocha ◽  
Andrew R Novak ◽  
Job Fransen ◽  
Gabriella A Figueiredo
Keyword(s):  
Response Time ◽  
Age Differences ◽  
Visual Cues ◽  
Response Times ◽  
Age Groups ◽  
Developmental Changes ◽  
Time Intervals ◽  
Stimulus Response ◽  
Time Task ◽  
Adolescents And Adults

Background: Many activities require a complex interrelationship between a performer and stimuli available in the environment without explicit perception, but many aspects regarding developmental changes in the use of implicit cues remain unknown. Aim: To investigate the use of implicit visual precueing presented at different time intervals in children, adolescents, and adults. Method: Seventy-two people, male and female, constituted four age groups: 8-, 10- and 12-year-olds and adults. Participants performed 32 trials, four-choice-time task across four conditions: no precue and a 43 ms centralized dot appearing in the stimulus circle at 43, 86 or 129 ms prior the stimulus. Response times were obtained for each trial and pooled into each condition. Results: Response times for 8-year-olds were longer than for 12-year-olds and adults and for 10-year-olds were longer than for adults. Response times were longer in the no precue condition compared to when precues were presented at 86 and 129 ms before the stimulus. Response times were longer when precue was presented at 43 ms compared presented at 129 ms before the stimulus. Interpretation: Implicit precues reduce response time in children, adolescents and adults, but young children benefit less from implicit precues than adolescents and adults.

scholarly journals A Pruning-Based Disk Scheduling Algorithm for Heterogeneous I/O Workloads

2014 ◽  
Vol 2014 ◽  
pp. 1-17
Author(s):  
Taeseok Kim ◽  
Hyokyung Bahn ◽  
Youjip Won
Keyword(s):  
Response Time ◽  
Scheduling Algorithm ◽  
Scheduling Algorithms ◽  
Disk Scheduling ◽  
Best Effort ◽  
Qos Guarantees ◽  
Time Minimization ◽  
On Line ◽  
Manageable Level ◽  
Deadline Constraints

In heterogeneous I/O workload environments, disk scheduling algorithms should support different QoS (Quality-of-Service) for each I/O request. For example, the algorithm should meet the deadlines of real-time requests and at the same time provide reasonable response time for best-effort requests. This paper presents a novel disk scheduling algorithm called G-SCAN (Grouping-SCAN) for handling heterogeneous I/O workloads. To find a schedule that satisfies the deadline constraints and seek time minimization simultaneously, G-SCAN maintains a series of candidate schedules and expands the schedules whenever a new request arrives. Maintaining these candidate schedules requires excessive spatial and temporal overhead, but G-SCAN reduces the overhead to a manageable level via pruning the state space using two heuristics. One is grouping that clusters adjacent best-effort requests into a single scheduling unit and the other is the branch-and-bound strategy that cuts off inefficient or impractical schedules. Experiments with various synthetic and real-world I/O workloads show that G-SCAN outperforms existing disk scheduling algorithms significantly in terms of the average response time, throughput, and QoS-guarantees for heterogeneous I/O workloads. We also show that the overhead of G-SCAN is reasonable for on-line execution.

scholarly journals Object-Guided Spatial Selection in Touch Without Concurrent Changes in the Perceived Location of the Hands

2013 ◽  
Vol 60 (1) ◽  
pp. 64-70 ◽  
Author(s):  
Helge Gillmeister ◽  
Simona Cantarella ◽  
Ana Ioana Gheorghiu ◽  
Julia Adler
Keyword(s):  
Response Time ◽  
Visual Cues ◽  
Spatial Location ◽  
Attentional Demands ◽  
Spatial Selection ◽  
Common Object ◽  
Spatial Framework ◽  
Time Costs ◽  
Relative Coordinates

In an endogenous cueing paradigm with central visual cues, observers made speeded responses to tactile targets at the hands, which were either close together or far apart, and holding either two separate objects or one common object between them. When the hands were far apart, the response time costs associated with attending to the wrong hand were reduced when attention had to be shifted along one object jointly held by both hands compared to when it was shifted over the same distance but across separate objects. Similar reductions in attentional costs were observed when the hands were placed closer together, suggesting that processing at one hand is less prioritized over that at another when the hands can be “grouped” by virtue of arising from the same spatial location or from the same object. Probes of perceived hand locations throughout the task showed that holding a common object decreased attentional separability without decreasing the perceived separation between the hands. Our findings suggest that tactile events at the hands may be represented in a spatial framework that flexibly adapts to (object-guided) attentional demands, while their relative coordinates are simultaneously preserved.

On-Line Estimation of Tool/Chip Interface Temperatures for a Turning Operation

1988 ◽  
Vol 110 (1) ◽  
pp. 56-64 ◽  
Author(s):  
J. G. Chow ◽  
P. K. Wright
Keyword(s):  
Tool Wear ◽  
Response Time ◽  
Turning Operation ◽  
Tool Insert ◽  
Measurement Sensor ◽  
Metallographic Technique ◽  
Prediction Scheme ◽  
On Line ◽  
Line Temperature ◽  
Measuring Scheme

This research has been concerned with the measurement of on-line temperature in a turning operation. The goal has been to develop a measurement sensor and algorithms that allow tool-chip interface temperatures to be estimated during machining. The measuring scheme relies on the signal from a standard thermocouple, located at the bottom of the tool insert, the response time of which has been observed to be on the order of one second. The important feature of the prediction scheme is that it can also estimate the interface temperatures for an interrupted cut and for the case when tool wear is present. The estimated interface temperatures have been compared with those obtained with a previously described metallographic technique [1] and a difference of 5–13 percent between these two results has been reported.

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