Choosing the Right “Bit Pad”: Human Factors Aspects of Digitizing Tablet Size

1982 ◽  
Vol 26 (7) ◽  
pp. 615-615
Author(s):  
James L. Knight
Keyword(s):  
Computer Graphics ◽  
Task Analysis ◽  
Movement Control ◽  
Human Movement ◽  
Optimum Size ◽  
Wide Range ◽  
The Right ◽  
Parameter Values ◽  
Selection Of ◽  
Digitizing Tablet

Entry of non-alphanumeric information into computer graphics systems is frequently accomplished by moving a drawing implement over the surface of a digitizing tablet. These tablets are commercially available in a wide range of sizes. Therefore, an important question from both ergonomic and economic standpoints concerns the optimum size for the digitizing tablet. To answer this question, models of human movement control were applied to the graphic operator's task. An experiment was conducted to obtain appropriate model parameter values and to empirically evaluate the resulting predictions of the generated models. A combination of task analysis and movement control modelling thus allowed selection of an optimum digitizing tablet size for a range of computer-graphics entry tasks. Details and results of this methodology will be presented.

scholarly journals ANALYSIS OF CREATING BENCHMARK IMAGES METHODS TO TEST THE ACCURACY OF PHOTOGRAMMETRIC SOFTWARE

2021 ◽  
Vol 26 (2) ◽  
pp. 47-55
Author(s):  
Alexander V. Komissarov ◽  
◽  
Valeriya V. Dedkova ◽  
Keyword(s):  
Aerial Survey ◽  
High Price ◽  
Work Time ◽  
Wide Range ◽  
Processing Accuracy ◽  
Survey Results ◽  
Classi Fication ◽  
The Right ◽  
Imagery Processing ◽  
Selection Of

Digital photogrammetry is based on the use of specialized photogrammetric software (or digital photogrammetric systems) to solve problems related to the aerospace imagery processing. A wide range of programs and high price motivate consumers to choose the right software that responds to requirements of processing accuracy, amount of work, time of execution, etc. The main goal of this study is to analyze the existing methods of benchmark images creating to test photogrammetric pro-grams. The article carries out the analysis of existing techniques of creating benchmark images, classi-fication, selection of benchmark images types suitable for testing of photogrammetric software, and substantiates the necessity for checking of aerial survey results quality in specialized software.

scholarly journals A minimal yet flexible likelihood framework to assess correlated evolution

2020 ◽  
Author(s):  
Abdelkader Behdenna ◽  
Patrice Petot ◽  
Joël Pothier ◽  
Camille Nous ◽  
Amaury Lambert ◽  
...  
Keyword(s):  
Phylogenetic Tree ◽  
Computing Time ◽  
Evolutionary Process ◽  
Evolutionary Processes ◽  
Correlated Evolution ◽  
Parameters Tuning ◽  
Current Implementation ◽  
Wide Range ◽  
Parameter Values ◽  
Selection Of

1AbstractAn evolutionary process is reflected in the sequence of changes through time of any trait (e.g. morphological, molecular). Yet, a better understanding of evolution would be procured by characterizing correlated evolution, or when two or more evolutionary processes interact. A wide range of parametric methods have previously been proposed to detect correlated evolution but they often require significant computing time as they rely on the estimation of many parameters. Here we propose a minimal likelihood framework modelling the joint evolution of two traits on a known phylogenetic tree. The type and strength of correlated evolution is characterized by few parameters tuning mutation rates of each trait and interdependencies between these rates. The framework can be applied to study any discrete trait or character ranging from nucleotide substitution to gain or loss of a biological function. More specifically, it can be used to 1) test for independence between two evolutionary processes, 2) identify the type of interaction between them and 3) estimate parameter values of the most likely model of interaction. In its current implementation, the method takes as input a phylogenetic tree together with mapped discrete evolutionary events on it and then maximizes the likelihood for one or several chosen scenarios. The strengths and limits of the method, as well as its relative power when compared to a few other methods, are assessed using both simulations and data from 16S rRNA sequences in a sample of 54 γ-enterobacteria. We show that even with datasets of less than 100 species, the method performs well in parameter estimation and in the selection of evolutionary scenario.

Orientation and Movement in Unusual Force Environments

1993 ◽  
Vol 4 (3) ◽  
pp. 134-142 ◽  
Author(s):  
James R. Lackner
Keyword(s):  
Present Article ◽  
Movement Control ◽  
Human Movement ◽  
Space Mission ◽  
Artificial Gravity ◽  
Adaptive Changes ◽  
Earth Gravity ◽  
Long Duration ◽  
Wide Range ◽  
Manned Space

A manned space mission to Mars might take as long as 1 year each way. Consequently, artificial gravity is being considered as a way of preventing the debilitating effects of long-duration exposure to microgravity on the human hotly. The present article discusses some of the problems associated with adapting to the rotation levels that might be used to generate artificial gravity. It also describes how exposure to background-force levels greater or less than the 1-G force of Earth gravity affects orientation and movement control. The primary emphasis of the article is that human movement and orientation control are dynamically adapted to the 1-G force background of Earth and that accommodation to altered force levels or to rotating environments requires a wide range of adaptive changes.

scholarly journals Choosing the Right Life Partner: Ecological Drivers of Lichen Symbiosis

2021 ◽  
Vol 12 ◽  
Author(s):  
Lucie Vančurová ◽  
Jiří Malíček ◽  
Jana Steinová ◽  
Pavel Škaloud
Keyword(s):  
Canary Islands ◽  
Environmental Conditions ◽  
Environmental Gradients ◽  
Fungal Species ◽  
Climatic Conditions ◽  
Algal Symbionts ◽  
Wide Range ◽  
Taxonomic Range ◽  
The Right ◽  
Selection Of

Lichens are an iconic example of symbiotic systems whose ecology is shaped by the requirements of the symbionts. Previous studies suggest that fungal (mycobionts) as well as photosynthesizing (phycobionts or cyanobionts) partners have a specific range of acceptable symbionts that can be chosen according to specific environmental conditions. This study aimed to investigate the effects of climatic conditions and mycobiont identity on phycobiont distribution within the lichen genera Stereocaulon, Cladonia, and Lepraria. The study area comprised the Canary Islands, Madeira, Sicily, and the Aeolian Islands, spanning a wide range of climatic conditions. These islands are known for their unique and diverse fauna and flora; however, lichen phycobionts have remained unstudied in most of these areas. In total, we genetically analyzed 339 lichen samples. The phycobiont pool differed significantly from that outside the studied area. Asterochloris mediterranea was identified as the most abundant phycobiont. However, its distribution was limited by climatic constraints. Other species of Asterochloris and representatives of the genera Chloroidium, Vulcanochloris, and Myrmecia were also recovered as phycobionts. The selection of symbiotic partners from the local phycobiont pool was driven by mycobiont specificity (i.e., the taxonomic range of acceptable partners) and the environmental conditions, mainly temperature. Interestingly, the dominant fungal species responded differently in their selection of algal symbionts along the environmental gradients. Cladonia rangiformis associated with its phycobiont A. mediterranea in a broader range of temperatures than Stereocaulon azoreum, which favors other Asterochloris species along most of the temperature gradient. Stereocaulon vesuvianum associated with Chloroidium spp., which also differed in their temperature optima. Finally, we described Stereocaulon canariense as a new endemic species ecologically distinct from the other Stereocaulon species on the Canary Islands.

scholarly journals Greybox Algorithm Configuration

2021 ◽  
Author(s):  
Marie Anastacio
Keyword(s):  
State Of The Art ◽  
Automated Algorithm ◽  
Wide Range ◽  
Algorithm Configuration ◽  
Improve Algorithm ◽  
The Difference ◽  
Problem Instances ◽  
The Right ◽  
Parameter Values ◽  
Configuration Problem

The performance of state-of-the-art algorithms is highly dependent on their parameter values, and choosing the right configuration can make the difference between solving a problem in a few minutes or hours. Automated algorithm configurators have shown their efficiency on a wide range of applications. However, they still encounter limitations when confronted to a large number of parameters to tune or long algorithm running time. We believe that there is untapped knowledge that can be gathered from the elements of the configuration problem, such as the default value in the configuration space, the source code of the algorithm, and the distribution of the problem instances at hand. We aim at utilising this knowledge to improve algorithm configurators.

METHODS OF DISTRIBUTION OF RESEARCH WORKS AMONG THE COLLECTIVES OF IMPLEMENTERS OF SCIENTIFIC PROJECTS HIGHER MILITARY EDUCATION INSTITUTIONS

2019 ◽  
Vol 2 (12) ◽  
pp. 178-187
Author(s):  
R. Bulgakov ◽  
V. Golovanʼ ◽  
L. Knaub
Keyword(s):  
Armed Forces ◽  
Scientific Work ◽  
Military Education ◽  
Resource Base ◽  
Structural Units ◽  
Wide Range ◽  
Scientific Project ◽  
Higher Educational ◽  
The Right ◽  
Selection Of

The article deals with increasing the efficiency of scientific project management in higher military educational establishments by introducing the method of distribution of research works among the teams of performers of scientific projects of higher military educational establishments, analyzes the load of scientific and pedagogical workers of typical structural units of higher educational establishments of higher educational establishments. Actions of the functional leader in the selection of the team of executors of the scientific project. Specificity of scientific tasks in the military field is the need to overcome the uncertainties caused by the unpredictability of the enemy during combat. The complexity and multidimensionality of the problem of planning and managing the scientific and technical activities in the security and defense sector necessitate the improvement of existing planning and management mechanisms in the Armed Forces of Ukraine. Management activities of functional leaders is one of the important factors for the success and quality of scientific tasks. In the teaching and research processes of higher military education there is a wide range of management entities. The content and scope of managerial functions of heads of departments, faculties and departments are defined in the relevant charters, guidelines and instructions. However, it is very difficult to identify the quantitative weight of each institution of management of the scientific-pedagogical system of higher education institutions and its structural units. The order of performing management functions during certain periods of activity is worked out by each entity, mainly independently, on the basis of personal experience, the choice of forms, methods and means of influencing the management object is, for the most part, a creative process. One of the important aspects of the implementation of a scientific project that depends on the end result is the selection of the "right" team of project executors and the project resource, namely: specialists in the field of research, motivated by the result, able to achieve it by their competence, not overloaded with other work , plus - comprehensive security of the project. In order to increase the effectiveness of management activities, to apply the management of the institution (the chief and his deputy for scientific work) by the apparatus, to qualitatively evaluate and make the right management decisions at the stage of appointment of the project manager and the team of executors of the scientific project, to determine the resource base and limitations in this particular scientific project, this technique is proposed. Management of scientific projects in all phases of their implementation - from order to implementation, is a priority direction of increasing the efficiency of the system of scientific and scientific-technical activity of the Armed Forces of Ukraine. The implementation of the algorithm of selection of the team of executors of the scientific project is an effective mechanism for optimizing the decision-making process by functional managers in the early stages of scientific projects.

scholarly journals Modification of Digital Oil Pressure Measurement Equipment using Bluetooth Technology

2019 ◽  
Vol 13 (2) ◽  
pp. 103
Author(s):  
Rasma Rasma ◽  
Thomas Junaedi ◽  
Hendro Purwono ◽  
Riki Effendi
Keyword(s):  
Pressure Gauge ◽  
Measurement Methods ◽  
Hydraulic Pressure ◽  
Work Process ◽  
Diagnostic Instruments ◽  
Digital Pressure ◽  
Wide Range ◽  
Measurement Results ◽  
The Right ◽  
Selection Of

PT United Tractors Tbk Jakarta workshop held a lot of Machine Inspection Programs for Komatsu units. During the implementation of the Machine Inspection Program (PPM) the machine inspection program is one part of the maintenance that is carried out periodically to obtain accurate data on the condition of the equipment at the time by carrying out checks and adjustments using measurement methods and diagnostic instruments The use of a pressure gauge is still using manual and has a measurement distance that is still limited, if workers or mechanics are not equipped with sufficient knowledge then the pressure gauge will have the potential for error in use and the selection of a pressure gauge is not appropriate to the pressure gauge directly connected to the hydraulic pressure through the hose then the work process ppm is not enough 1 manpower. Therefore it is necessary to modify a digital pressure gauge that has a wide range of scales, in addition a wireless connection is needed to enable the operation of the unit and measurements are made 1 manpower and Bluetooth is one of the right choices in addition to the reach can be met in an application not too difficult so that readings measurement results can be connected directly via mobile.

scholarly journals WILL CASHLESS PAYMENT BECOME CONSUMER'S TRANSACTION HABIT IN THE "NEW NORMAL" ERA?

TRIKONOMIKA ◽  
2021 ◽  
Keyword(s):  
Self Efficacy ◽  
Perceived Risk ◽  
Continuance Intention ◽  
New Normal ◽  
Wide Range ◽  
Perceived Security ◽  
The Right ◽  
Selection Of

The purpose of this study was to find out whether or not new habit, cashless transaction, would still be used after the Covid-19 pandemic or in the new normal era, considering that this was a situational or temporary factor. The population of this research was individual consumers who were currently more likely to have higher intensity in cashless transactions than they did before the pandemic. This research was a study conducted during the Covid-19 pandemic in Indonesian society by examining the effect of perceived security, perceived risk, facilitating condition, Self-Efficacy of trust in online payments, and the use of cashless on Usage Continuance intention. The results of this study with 594 tested samples were two insignificant correlations. They were perceived risk toward trust in online payments and self-efficacy on usage continuance intention. These findings could support a wide range of stakeholders - both first movers/ pioneers and newcomers to the e-money segment, as the information about promotion and selection of the right market for their products.

scholarly journals THE TECHNIQUE OF FORMATION OF SYSTEM OF FORESTRY MACHINES

2017 ◽  
Vol 7 (1) ◽  
pp. 111-117 ◽  
Author(s):  
Мамматов ◽  
Vladimir Mammatov ◽  
Мохирев ◽  
Aleksandr Mokhirev
Keyword(s):  
Expert Knowledge ◽  
Stock Selection ◽  
Screening Criteria ◽  
Natural Production ◽  
Wide Range ◽  
Major Operation ◽  
Market Engineering ◽  
The Right ◽  
Production Conditions ◽  
Selection Of

A variety of natural-production conditions, which is necessary to conduct logging activities largely complicates the choice of forest machines for each individual company in the industry having logging sites in its composition. Depending on many natural and production conditions such as: slope, bearing capacity of soils, ambient temperature, maximum investments, etc., and the wide range of forestry equipment on the market, engineering divisions of the company solving a problem about the purchase of new or replacement of lost its performance machines are more and more difficult to make the right choice. This work presents a methodology for forming the system of forest machines with the natural and production conditions in a convenient form, not requiring special expert knowledge from the field of mathematical modeling or other areas of science. According to the methodology the first step is selection of basic machine and performing the first major operation in felling trees, then switch to the auxiliary machines which are linked to the underlying performance, to reduce the number of in-process stock. Selection of basic and auxiliary machines is provided that candidates and excludes important indicators. If in the process of selecting the logging machine does not meet the screening criteria for excluding indicators then it does not participate in the selection. Significant index can be neglected in case of discrepancy of candidates to stated requirements. The performance of the model was tested on the example of harvesting sites of the enterprises of the Krasnoyarsk region in spring 2016. In the course of the experiment the system of forest machines, meeting the required selection criteria, was obtained.

Evaluation of 99mTc-Label led Vitamin K4 as an Agent for Testicular Imaging

1991 ◽  
Vol 30 (01) ◽  
pp. 35-39 ◽  
Author(s):  
H. S. Durak ◽  
M. Kitapgi ◽  
B. E. Caner ◽  
R. Senekowitsch ◽  
M. T. Ercan
Keyword(s):  
Soft Tissue ◽  
Room Temperature ◽  
Normal Subjects ◽  
Left Testis ◽  
Wide Range ◽  
Activity Ratios ◽  
The Right ◽  
Radioactivity Levels

Vitamin K4 was labelled with 99mTc with an efficiency higher than 97%. The compound was stable up to 24 h at room temperature, and its biodistribution in NMRI mice indicated its in vivo stability. Blood radioactivity levels were high over a wide range. 10% of the injected activity remained in blood after 24 h. Excretion was mostly via kidneys. Only the liver and kidneys concentrated appreciable amounts of radioactivity. Testis/soft tissue ratios were 1.4 and 1.57 at 6 and 24 h, respectively. Testis/blood ratios were lower than 1. In vitro studies with mouse blood indicated that 33.9 ±9.6% of the radioactivity was associated with RBCs; it was washed out almost completely with saline. Protein binding was 28.7 ±6.3% as determined by TCA precipitation. Blood clearance of 99mTc-l<4 in normal subjects showed a slow decrease of radioactivity, reaching a plateau after 16 h at 20% of the injected activity. In scintigraphic images in men the testes could be well visualized. The right/left testis ratio was 1.08 ±0.13. Testis/soft tissue and testis/blood activity ratios were highest at 3 h. These ratios were higher than those obtained with pertechnetate at 20 min post injection.99mTc-l<4 appears to be a promising radiopharmaceutical for the scintigraphic visualization of testes.

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