Model Based Monitoring and Controlling for Platform-as-a-Service (PaaS)

Platform as a Service (PaaS) is a typical cloud service paradigm that allows PaaS consumers to deploy and manage applications (usually services to SaaS consumers). To ensure the quality of services to both PaaS consumers and SaaS consumers, PaaS must be equipped with enough monitoring and controlling ability to make runtime adjustment actions. Although most of the components in PaaS have provided their own management interface, it is hard to perform adjustment actions based on raw runtime data collected from these low level management interfaces due to the diversity and dynamics of components in PaaS. This paper proposes a model based monitoring and controlling approach for PaaS. The proposed approach masks the underlying heterogeneity of components in PaaS and presents a high level model for monitoring and controlling. The model is instantiated automatically based on pre-defined meta-model, which effectively reduces the development efforts. A monitoring and controlling framework based on this approach is designed and implemented in a practical PaaS, which shows the feasibility of the proposed approach.

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High-level model based calibration technique design for SAR ADC

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/1032/1/012050 ◽

2021 ◽

Vol 1032 ◽

pp. 012050

Author(s):

M N Skripnichenko

Keyword(s):

Sar Adc ◽

Calibration Technique ◽

Model Based ◽

Level Model ◽

High Level

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Dynamic modelling of a servo self-pierce riveting (SPR) process

Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture ◽

10.1177/09544054211037493 ◽

2021 ◽

pp. 095440542110374

Author(s):

Daniel Tang ◽

Mike Evans ◽

Paul Briskham ◽

Luca Susmel ◽

Neil Sims

Keyword(s):

Dynamic Modelling ◽

System Level ◽

Optimum Process ◽

Current Limit ◽

Level Model ◽

System Level Model ◽

Head Height ◽

Extensive Experimental Data ◽

High Level

Self-pierce riveting (SPR) is a complex joining process where multiple layers of material are joined by creating a mechanical interlock via the simultaneous deformation of the inserted rivet and surrounding material. Due to the large number of variables which influence the resulting joint, finding the optimum process parameters has traditionally posed a challenge in the design of the process. Furthermore, there is a gap in knowledge regarding how changes made to the system may affect the produced joint. In this paper, a new system-level model of an inertia-based SPR system is proposed, consisting of a physics-based model of the riveting machine and an empirically-derived model of the joint. Model predictions are validated against extensive experimental data for multiple sets of input conditions, defined by the setting velocity, motor current limit and support frame type. The dynamics of the system and resulting head height of the joint are predicted to a high level of accuracy. Via a model-based case study, changes to the system are identified, which enable either the cycle time or energy consumption to be substantially reduced without compromising the overall quality of the produced joint. The predictive capabilities of the model may be leveraged to reduce the costs involved in the design and validation of SPR systems and processes.

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Morphological traits of the development of the skin and wool cover in sheep of Prikatunsky meat and wool type

Glavnyj zootehnik (Head of Animal Breeding) ◽

10.33920/sel-03-2110-07 ◽

2021 ◽

pp. 60-68

Author(s):

I. I. Dmitrik ◽

G. V. Zavgorodnyaya ◽

M. I. Pavlova ◽

N. A. Podkorytov

Keyword(s):

Physical Properties ◽

Morphological Traits ◽

Age Groups ◽

Body Side ◽

Low Level ◽

Research Material ◽

High Level ◽

Significant Factors

A large number of works are devoted to the development of the skin and hair cover of sheep, depending on their breed affiliation, age, feeding conditions and housing. The authors point out that along with other conditions the quality of wool and wool clip is greatly influenced by the conditions of the feeding of animals. A high level of feeding increases the wool clip and improves the quality of the wool and vice versa a low level reduces, causes thinning and worsens other physical properties of the wool. As is known, one of the significant factors that determine the increase in wool clip is the size of the animal and, consequently, the total area of the skin. The purpose of the research was to investigate the morphological traits of the development of the skin and wool cover in sheep of Prikatunsky meat and wool type. The research material was wool samples from four topographic areas of the animal’s body (side/thigh/back/belly) and skin (side) of different sex and age groups, selected from the animals of the studied groups. In the course of research, the quality of wool and indicators of the histostructure of the skin of Prikatunsky meat and wool type of sheep have been investigated. In terms of thick-haired of wool, replacement rams and gimbers of Prikatunsky meat and wool type of sheep were superior by 4,82 pcs. per mm² or 19,0 % and 4,41 pcs. per mm² or 15,8 % of adult animals, respectively. Balance secondary follicles/primary follicles in young animals were higher by 10,3 and 17,3 % compared to breeding rams and ewes. The wool of the replacement young animals was thinner by 7,28 and 4,78 microns and they were more thick-haired. The obtained data will be used in the mating campaign when mating program rams in order to improve the sheep of Prikatunsky meat and wool type.

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A Comparative Study to Assess the Quality of Life and Stress among Orphan and Non-orphan Children in Selected Areas of Bagalkot

Indian Journal of Holistic Nursing ◽

10.24321/2348.2133.202007 ◽

2020 ◽

Vol 11 (04) ◽

pp. 19-25

Author(s):

Santosh B Sajjan ◽

Keyword(s):

Quality Of Life ◽

High Stress ◽

Poor Quality ◽

Demographic Variables ◽

Self Report ◽

Stress Scale ◽

Low Level ◽

High Level ◽

Moderate Stress

Introduction: The word orphan comes from the Greek word ‘Orfanos’ and refers to a child permanently bereaved of or abandoned by his or her parents. Methods: A non-experimental descriptive comparative design has been adopted for the present study. The sample of the present study comprises orphan children residing in an orphanage and non-orphan children residing in selected areas of Bagalkot. The sample comprised 30 orphans and 30 non-orphans aged between 10 and 16 years. The data were collected by using self-report, structured closed-ended questionnaires for socio-demographic variables of children, self-administered WHO Quality of life BREF scale, and PSS stress scale. The data obtained were analysed with the help of descriptive and inferential statistics. Result: Findings related to the comparison between the level of stress among the orphan and non-orphan children revealed that majority of orphan children (76.66%) had about moderate stress, 23.33% of the orphan children had high stress, and none of the children had a low level of stress, whereas among non-orphan children, majority (90%) had moderate stress, 10% had low level stress, and none of them had high level stress. The findings related to the comparison of levels of quality of life among the orphan and non-orphan children reveal that a high percentage of orphan children (66.66%) had a moderate quality of life and some of them (33.33%) had a poor quality of life, whereas a high number of non-orphan children (66.66%) had a very good quality of life and some (33.33%) had a good quality of life. No significant association was found between the quality of life and stress scores with the socio-demographic variables of orphan and non-orphan children. Conclusion: The study concluded that orphan children need to improve their quality of life and decrease their level of stress.

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Analisis Kepuasan Konsumen Dalam Menggunakan Jasa Pengiriman Paket Pos Optima Pada PT. Pos Indonesia (persero) Cabang Pontianak

JURNAL MANAJEMEN MOTIVASI ◽

10.29406/jmm.v9i3.212 ◽

2013 ◽

Vol 9 (3) ◽

pp. 293

Author(s):

Syarifah Arini

Keyword(s):

Customer Satisfaction ◽

Service Quality ◽

Average Rate ◽

Survey Methods ◽

Quality Of Services ◽

Physical Evidence ◽

Quality Dimensions ◽

Service Quality Dimensions ◽

High Level

Research to analyze customer satisfaction at optimal postal parcel delivery service at PT Pos Indonesia (Persero) Branch Pontianak. Dimension-imensi examined are reliability, responsiveness, assurance, empathy, and tangibles. This study used survey methods, data collection techniques, namely: observation, interviews, questionnaires, and documentation study. Samples used as many as 100 people by using purposive sampling. analysis using Cartesian diagram. The results of this study indicate that the majority of respondents were satisfied with the service of PT Pos Indonesia (Persero) Branch Pontianak with an average satisfaction level of 3.91 and the value of the average rate of interest of 4.34 dimension of service quality the most satisfied customers is assurance dimension and physical evidence, where the majority of respondents' votes are in quadrant B, which means that the interest and customer satisfaction are at a high level and in accordance with the wishes of the consumer. Dimensional quality of services that they are in quadrant A, which means the consumer is not satisfied then it should be further enhanced by the company. While the dimensions of the quality of services that are in quadrant C and D in which the interests of consumers are at a low level is considered normal practice even though consumers are satisfied because it is not very important.Keywords: Satisfaction, Service Quality Dimensions Services

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Qualitative and Quantitative Integrated Modeling for Stochastic Simulation and Optimization

Journal of Applied Mathematics ◽

10.1155/2013/831273 ◽

2013 ◽

Vol 2013 ◽

pp. 1-12 ◽

Cited By ~ 1

Author(s):

Xuefeng Yan ◽

Yong Zhou ◽

Yan Wen ◽

Xudong Chai

Keyword(s):

Hierarchical Model ◽

Description Logic ◽

Expert Knowledge ◽

Uncertain Reasoning ◽

Model Structure ◽

Meta Model ◽

Simulation And Optimization ◽

Qualitative And Quantitative ◽

Level Model ◽

High Level

The simulation and optimization of an actual physics system are usually constructed based on the stochastic models, which have both qualitative and quantitative characteristics inherently. Most modeling specifications and frameworks find it difficult to describe the qualitative model directly. In order to deal with the expert knowledge, uncertain reasoning, and other qualitative information, a qualitative and quantitative combined modeling specification was proposed based on a hierarchical model structure framework. The new modeling approach is based on a hierarchical model structure which includes the meta-meta model, the meta-model and the high-level model. A description logic system is defined for formal definition and verification of the new modeling specification. A stochastic defense simulation was developed to illustrate how to model the system and optimize the result. The result shows that the proposed method can describe the complex system more comprehensively, and the survival probability of the target is higher by introducing qualitative models into quantitative simulation.

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Powered Ankle-Foot Prostheses: A Survey on Sensing Systems and Control Strategies

Volume 5A: 43rd Mechanisms and Robotics Conference ◽

10.1115/detc2019-97511 ◽

2019 ◽

Author(s):

Erik Chumacero-Polanco ◽

James Yang

Keyword(s):

Control Strategies ◽

Level Control ◽

Low Level ◽

Kinetic Information ◽

Sensing Systems ◽

Systems And Control ◽

Finite State ◽

High Level ◽

And Control

Abstract People who have suffered a transtibial amputation show diminished ambulation and impaired quality of life. Powered ankle foot prostheses (AFP) are used to recover some mobility of transtibial amputees (TTAs). Powered AFP is an emerging technology that has great potential to improve the quality of life of TTAs with important avenues for research and development in different fields. This paper presents a survey on sensing systems and control strategies applied to powered AFPs. Sensing kinematic and kinetic information in powered AFPs is critical for control. Ankle angle position is commonly obtained via potentiometers and encoders directly installed on the joint, velocities can be estimated using numerical differentiators, and accelerations are normally obtained via inertial measurement units (IMUs). On the other hand, kinetic information is usually obtained via strain gauges and torque sensors. On the other hand, control strategies are classified as high- and low-level control. The high-level control sets the torque or position references based on pattern generators, user’s intent of motion recognition, or finite-state machine. The low-level control usually consists of linear controllers that drive the ankle’s joint position, velocity, or torque to follow an imposed reference signal. The most widely used control strategy is the one based on finite-state machines for the high-level control combined with a proportional-derivative torque control for low-level. Most designs have been experimentally assessed with acceptable results in terms of walking speed. However, some drawbacks related to powered AFP’s weight and autonomy remain to be overcome. Future research should be focused on reducing powered AFP size and weight, increasing energy efficiency, and improving both the high- and the low-level controllers in terms of efficiency and performance.

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