Pressure-Based Soft Sensors for Fast Volume Estimation

2013 ◽  
Vol 336-338 ◽  
pp. 210-215
Author(s):  
Xiao Meng Tong ◽  
Mao Lin Cai
Keyword(s):  
Estimation Error ◽  
Ideal Gas ◽  
Volume Estimation ◽  
Fast Method ◽  
Soft Sensors ◽  
Ideal Gas Law ◽  
Sensor Technique ◽  
Average Estimation Error ◽  
Set Up ◽  
The Relationship

To acquire a fast method for better volume estimation, a novel soft sensor technique is proposed in this paper. Based on the principle of energy conservation as well as the ideal gas law, mathematical models of charging and discharging process are set up. Afterwards, simulations are carried out to explore the relationship between the estimated volume and the pressure stable time. Finally, experiments with different pneumatic cylinders are conducted to select the suitable estimation mode and also optimize the parameters. Results show that in discharging mode, the average estimation error for volume estimation can be less than 4% with both low pressure and high pressure, making this method quite suitable for industrial application.

Development of an Ideal Project Law

2003 ◽  
Author(s):  
David C. Hall ◽  
Ron Kohl ◽  
Roger Graves
Keyword(s):  
Decision Making ◽  
Research Collaboration ◽  
Ideal Gas ◽  
The Other ◽  
Human Beings ◽  
Operational Risks ◽  
Ideal Gas Law ◽  
Set Up ◽  
Systematic Thinking ◽  
The Ideal

Our research collaboration has begun a project to develop an Ideal Project Law (IPL). What we are trying to accomplish is the development of some equation with a mathematical underpinning that can usefully relate Functionality, Cost, Schedule and Risk which can then be graphed, and this graph then becomes a decision making and communications aid. For some of us, the current contention is that a possible IPL is analogous to the Ideal Gas Law (IGL), which relates Pressure (P), Volume (V) and Temperature (T) for reasonably well-behaved gases. (P*V)/T = Constant (where the constant has very much to do with the nature of the gas under discussion). This is due to our belief that the IPL will represent some form of a relationship (inverse or direct) between Cost (C), Schedule (S), Functionality (F) and Risk (R) much like the IGL represents relationships between P, V and T for a given gas. We also expect that at least some of the factors will change based on the type of project, so we might have to develop a range of factors and constants. The Ideal Gas Law informs us, for example, that if you keep V fixed and increase P, then you can expect T to also increase. So “keep this one factor fixed, and change that other factor and then watch the third factor move one way or the other” relationships can be described via the Ideal Gas Law. We believe that this “push on one factor and see what happens to the other factors” feature of the Ideal Gas Law seems to be very analogous to project and operation Cost, Schedule, Functionality and Risk relationships. This law, or some such function, is absolutely essential. Having such a Law that is proven valid will introduce (or rather tactfully enforce) some systematic thinking in the project and operational management set-up. Otherwise, no matter how elaborate a case is made for project or operational risks, the risk decisions will be left to the whims, fancies and moods of the key decision-making person(s) in the organization or project — we are working towards reducing this subjectivity in decision-making. We may determine that it is impossible to have a 100% scientific outlook on project or operational factors simply because human beings are involved, but if that is the case, we may be able to be at least 80% scientific about it.

scholarly journals Analisis Penguasaan Konsep dan Kesulitan Siswa pada Materi Teori Kinetik Gas

2019 ◽  
Vol 4 (10) ◽  
pp. 1333
Author(s):  
Mimi Rohazal Yaumi ◽  
Sutopo Sutopo ◽  
Siti Zulaikah
Keyword(s):  
Conceptual Understanding ◽  
Ideal Gas ◽  
Average Score ◽  
Kinetic Theory Of Gases ◽  
Multiple Choice Questions ◽  
Maximum Score ◽  
Ideal Gas Law ◽  
Ideal Gases ◽  
The Relationship ◽  
Number Of Particles

<p><strong>Abstract:</strong> The purpose of this study was to analysed conceptual understanding and difficulties (misconceptions) of students in the kinetic theory of gases. Test consisted of 9 reasoned multiple choice questions administered after students study the material. From the results of the study, students get an average score of 7.1 from maximum score of 9. Students have mastered the concept of the relationship between ideal gas state quantities (pressure, volume, temperature) and kinetic energy of ideal gases. However, students still have difficulty in determining internal energy if the number of particles changing, the average speed of ideal gases, and the application of ideal gas law to the circulatory phenomena in the heart.</p><strong>Abstrak:</strong><em> </em>Penelitian ini bertujuan untuk menganalisis penguasaan konsep dan kesulitan (miskonsepsi) siswa pada materi teori kinetik gas. Soal tes terdiri dari sembilan soal pilihan ganda beralasan yang diberikan setelah siswa mempelajari materi tersebut. Dari hasil penelitian, siswa mendapatkan skor rata-rata 7,1 dari skor maksimal 9. Siswa telah menguasai konsep hubungan antar besaran keadaan gas ideal (tekanan, volume, suhu) dan energi kinetic gas ideal. Namun, siswa masih mengalami kesulitan dalam menentukan energi internal dengan jumlah partikel gas yang berubah, kelajuan rata-rata gas ideal, dan aplikasi persamaan keadaan gas pada fenomena peredaran darah di jantung.

scholarly journals Evaluación de un protocolo automatizado para la obtención de medidas morfométricas de huevos de aves a partir de fotografías digitales

2020 ◽  
pp. 31-43
Author(s):  
V. M. Ramírez–Arrieta ◽  
D. Denis ◽  
Y. Ferrer–Sánchez
Keyword(s):  
Estimation Error ◽  
Measurement Data ◽  
Volume Estimation ◽  
Automated Extraction ◽  
Significant Saving ◽  
R Language ◽  
Web App ◽  
Average Estimation Error ◽  
Time Required ◽  
Chicken Eggs

Evaluation of a protocol for automated extraction of morphometric measurements from avian eggs using digital photography As many ecomorphological studies are limited by the time required to gather manual measurement data, automatizing the process is an important focus of methodological innovations. We developed, implemented and validated a protocol for the semi–automated extraction of a set of morphometric variables of egg size and shape from digital pictures. The protocol was implemented in R language as a web app called OvometriK. After binarizing and calibrating images, this protocol uses geometric and trigonometric functions to calculate eleven egg variables. We tested calculations in several ways, assuming contour continuity or using voxel counts. Application was validated with geometric shapes and 30 manually–measured chicken eggs. Mathematical validation with spheres showed that the algorithm provided high precision diameter measures, with a correlation of 99.9 %. Average estimation error was 1.4 %. The mathematical volume estimation was underestimated by 27 %, while voxels were underestimated by only 6 %. Differences between manual egg measurements of diameters and those obtained from images was less than 3 mm (4 %). Correlation between estimated volume and measured by silica gel filling was higher than 90 % using the voxel count method. Neither inclination angle or picture resolution had significant effects on precision (3.2 % maximum difference). Measures showed high repeatability and represent a significant saving in processing time. This new protocol represents an improvement on previous programs regarding limitations of platform, accessibility and number of variables. Furthermore, its flexibility and openness means it can be adapted to other specific applications.

scholarly journals Real-Time Size and Mass Estimation of Slender Axi-Symmetric Fruit/Vegetable Using a Single Top View Image

Sensors ◽  
2020 ◽  
Vol 20 (18) ◽  
pp. 5406 ◽  
Author(s):  
Tri Huynh ◽  
Ly Tran ◽  
Son Dao
Keyword(s):  
Estimation Error ◽  
Three Dimensional ◽  
Quality Parameters ◽  
Volume Estimation ◽  
Two Dimensional Image ◽  
Important Quality ◽  
Set Up ◽  
Agricultural Materials ◽  
Mass Volume ◽  
Top View

Among the physical attributes of agricultural materials, mass, volume, and sizes have always been important quality parameters. Previous research focused mostly on volume estimation using stereo-based approaches, which rely on manual intervention or require a multiple-cameras set up or multiple-frames captures from different viewing angles to reconstruct the three-dimensional point-cloud information. These approaches are tedious and not suitable for practical machine vision systems. In this work, we only use a single camera mounted on the ceiling of the imaging chamber, which is directly above the fruit/vegetable to capture its top-view, two-dimensional image. We developed a method to estimate the mass/volume of agricultural products with axi-symmetrical shapes such as a carrot or a cucumber. The mass/volume is estimated as the sum of smaller standard blocks, such as chopped pyramids, an elliptical cone, or a conical cone. The computed mass/volume showed good agreement with analytical and experimental results. The weight estimation error is 95% for the case of the carrot and 96.7% for the cucumber. The method proved to be sufficiently accurate, easy to use, and rotationally invariant.

The Effects of Drying Techniques on Clay-Rich Soil Texture

1974 ◽  
Vol 32 ◽  
pp. 466-467
Author(s):  
T. G. Naymik
Keyword(s):  
Critical Point ◽  
Liquid Nitrogen ◽  
Liquid Nitrogen Temperature ◽  
Drying Methods ◽  
Air Drying ◽  
Freeze Dried ◽  
Critical Point Drying ◽  
Set Up ◽  
The Relationship ◽  
Quartz Grains

Three techniques were incorporated for drying clay-rich specimens: air-drying, freeze-drying and critical point drying. In air-drying, the specimens were set out for several days to dry or were placed in an oven (80°F) for several hours. The freeze-dried specimens were frozen by immersion in liquid nitrogen or in isopentane at near liquid nitrogen temperature and then were immediately placed in the freeze-dry vacuum chamber. The critical point specimens were molded in agar immediately after sampling. When the agar had set up the dehydration series, water-alcohol-amyl acetate-CO2 was carried out. The objectives were to compare the fabric plasmas (clays and precipitates), fabricskeletons (quartz grains) and the relationship between them for each drying technique. The three drying methods are not only applicable to the study of treated soils, but can be incorporated into all SEM clay soil studies.

Work Stress and Organisational Citizenship Behaviours (OCBs) in Call Centers Employees

2015 ◽  
Vol 3 (1) ◽  
Author(s):  
Sunita ◽  
Urvashi Singh ◽  
Shalini Singh ◽  
Rajnee Sharma
Keyword(s):  
Negative Impact ◽  
Call Centers ◽  
Negative Relationship ◽  
Married Couples ◽  
Call Centre ◽  
Simple Correlation ◽  
Nuclear Families ◽  
Set Up ◽  
Stress At Work ◽  
The Relationship

The present study was conducted to examine the relationship between organisational stress and organisational citizenship behaviours (OCBs) in employees of call centers. The study also further explored as how stress at work set-up has negative impact on OCBs. A sample of 250 employees working in call centre of Gurgaon belonging to an age group of 25-30 years were selected on availability basis. All were working married couples living in nuclear families. Job stress survey (Spielberger & Vagg, 1999) and Organisational Citizenship Behaviour (Bateman & Organ, 1983) were administered. Data was analysed by using simple correlation and multiple regression. Results showed the negative relationship between organisational stress and OCBs. Results of regression analysis also exhibited the negative impact of stress on OCBs. The implications for the employees are discussed.

A Study on the Relationship Between Psychological Climate, Employee Engagement and Organizational Citizenship Behavior

2015 ◽  
Vol 6 (2) ◽  
Author(s):  
Ginu George ◽  
Binoy Joseph
Keyword(s):  
Employee Engagement ◽  
Organizational Citizenship ◽  
Organizational Citizenship Behavior ◽  
Academic Research ◽  
Psychological Climate ◽  
Citizenship Behavior ◽  
Set Up ◽  
Relationship Of ◽  
The Relationship

Employee engagement is becoming an important area of focus by many HR consultancies in the recent years. Organizations having engaged employees tend to out-perform than employees who are not engaged or disengaged, also it will enable them to compete better in their industry resulting in higher performance, lower turnover, more profitability etc., Despite of all this there are still some industries who are ignorant and neglect the importance of having engaged employees. Therefore there is a necessity for more of academic research on employee engagement which helps in creating awareness to these organizations about the prominence of focusing on employee engagement and the findings will also augments the existing literature on employee engagement. The study was conducted on 433 employees working in travel organizations set up in Bangalore with the purpose of determining the relationship psychological climate (antecedent) has on employee engagement and in turn its relationship with organizational citizenship behavior (outcome). The study also determines the mediating relationship of employee engagement between PC and OCB.

scholarly journals Application of intelligent orienteering based on Internet of things

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Donghui Zhang ◽  
Ruijie Liu
Keyword(s):  
Internet Of Things ◽  
Network Architecture ◽  
Emergency Services ◽  
Simulation Experiment ◽  
Experimental Studies ◽  
Signal Stability ◽  
Anchor Nodes ◽  
Set Up ◽  
The Relationship ◽  
The Internet Of Things

Abstract Orienteering has gradually changed from a professional sport to a civilian sport. Especially in recent years, orienteering has been widely popularized. Many colleges and universities in China have also set up this course. With the improvement of people’s living conditions, orienteering has really become a leisure sport in modern people’s life. The reduced difficulty of sports enables more people to participate, but it also exposes a series of problems. As the existing positioning technology is relatively backward, the progress in personnel tracking, emergency services, and other aspects is slow. To solve these problems, a new intelligent orienteering application system is developed based on the Internet of things. ZigBee network architecture is adopted in the system. ZigBee is the mainstream scheme in the current wireless sensor network technology, which has many advantages such as convenient carrying, low power consumption, and signal stability. Due to the complex communication environment in mobile signal, the collected information is processed by signal amplification and signal anti-interference technology. By adding anti-interference devices, video isolators and other devices, the signal is guaranteed to the maximum extent. In order to verify the actual effect of this system, through a number of experimental studies including the relationship between error and traffic radius and the relationship between coverage and the number of anchor nodes, the data shows that the scheme studied in this paper has a greater improvement in comprehensive performance than the traditional scheme, significantly improving the accuracy and coverage. Especially the coverage is close to 100% in the simulation experiment. This research has achieved good results and can be widely used in orienteering training and competition.

Making sense of sensemaking: using the sensemaking epistemic game to investigate student discourse during a collaborative gas law activity

2021 ◽  
Author(s):  
Kevin H. Hunter ◽  
Jon-Marc G. Rodriguez ◽  
Nicole M. Becker
Keyword(s):  
Problem Solving ◽  
Conceptual Understanding ◽  
Ideal Gas ◽  
Interactive Simulation ◽  
Structural Components ◽  
Student Discourse ◽  
Coding Scheme ◽  
Making Sense ◽  
Ideal Gas Law ◽  
The Ideal

Beyond students’ ability to manipulate variables and solve problems, chemistry instructors are also interested in students developing a deeper conceptual understanding of chemistry, that is, engaging in the process of sensemaking. The concept of sensemaking transcends problem-solving and focuses on students recognizing a gap in knowledge and working to construct an explanation that resolves this gap, leading them to “make sense” of a concept. Here, we focus on adapting and applying sensemaking as a framework to analyze three groups of students working through a collaborative gas law activity. The activity was designed around the learning cycle to aid students in constructing the ideal gas law using an interactive simulation. For this analysis, we characterized student discourse using the structural components of the sensemaking epistemic game using a deductive coding scheme. Next, we further analyzed students’ epistemic form by assessing features of the activity and student discourse related to sensemaking: whether the question was framed in a real-world context, the extent of student engagement in robust explanation building, and analysis of written scientific explanations. Our work provides further insight regarding the application and use of the sensemaking framework for analyzing students’ problem solving by providing a framework for inferring the depth with which students engage in the process of sensemaking.

Assessment of 2D ultrasound fluid volume estimation accuracy in different shaped objects: an in vitro study

2019 ◽  
Vol 61 (2) ◽  
pp. 253-259
Author(s):  
Iroshani Kodikara ◽  
Iroshini Abeysekara ◽  
Dhanusha Gamage ◽  
Isurani Ilayperuma
Keyword(s):  
Estimation Error ◽  
In Vitro Study ◽  
High Accuracy ◽  
Volume Estimation ◽  
Estimation Accuracy ◽  
Rater Agreement ◽  
Actual Volume ◽  
2D Ultrasound ◽  
One Way Anova

Background Volume estimation of organs using two-dimensional (2D) ultrasonography is frequently warranted. Considering the influence of estimated volume on patient management, maintenance of its high accuracy is empirical. However, data are scarce regarding the accuracy of estimated volume of non-globular shaped objects of different volumes. Purpose To evaluate the volume estimation accuracy of different shaped and sized objects using high-end 2D ultrasound scanners. Material and Methods Globular (n=5); non-globular elongated (n=5), and non-globular near-spherical shaped (n=4) hollow plastic objects were scanned to estimate the volumes; actual volumes were compared with estimated volumes. T-test and one-way ANOVA were used to compare means; P<0.05 was considered significant. Results The actual volumes of the objects were in the range of 10–445 mL; estimated volumes ranged from 6.4–425 mL ( P=0.067). The estimated volume was lower than the actual volume; such volume underestimation was marked for non-globular elongated objects. Regardless of the scanner, the highest volume estimation error was for non-globular elongated objects (<40%) followed by non-globular near-spherical shaped objects (<23.88%); the lowest was for globular objects (<3.6%). Irrespective of the shape or the volume of the object, volume estimation difference among the scanners was not significant: globular (F=0.430, P=0.66); non-globular elongated (F=3.69, P=0.064); and non-globular near-spherical (F=4.00, P=0.06). A good inter-rater agreement (R=0.99, P<0.001) and a good correlation between actual versus estimated volumes (R=0.98, P<0.001) were noted. Conclusion The 2D ultrasonography can be recommended for volume estimation purposes of different shaped and different sized objects, regardless the type of the high-end scanner used.

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