scholarly journals Mastering Uncertain Operating Conditions in the Development of Complex Machine Elements by Validation Under Dynamic Superimposed Operating Conditions

2021 ◽  
pp. 236-251
Author(s):  
Thiemo Germann ◽  
Daniel M. Martin ◽  
Christian Kubik ◽  
Peter Groche
Keyword(s):  
Operating Conditions ◽  
Evaluation Tool ◽  
Complex Interactions ◽  
Machine Element ◽  
Operating Load ◽  
Machine Elements ◽  
And Performance ◽  
Investment Goods ◽  
Further Development

AbstractMachine elements produced in large quantities undergo several development cycles and can be adapted from generation to generation. Thus, experiences from real operation can be taken into account in further development. This is not possible for innovative investment goods such as special purpose machines, as these are usually individual items. Therefore, functionality and quality of newly developed components must be assured by previous investigations.Conventional methods are inadequate at this point, as they cannot represent the actual, complex operating conditions in the later application. A reliable statement about the behavior of the system through a comprehensive validation in laboratory tests under standardized conditions is not achievable in this way due to a multitude of diversified load cases.In previous work, a method was developed to allow testing of machine elements in the laboratory under detuned operating conditions. For this purpose, disturbance variables are applied to the system using paraffin wax phase change actuators in order to simulate real operation states and to analyze the behavior of the machine element under these conditions. The investigated disturbance variables are fluctuations and asymmetries of the operating load through superimposed temperature gradients. Complex interactions between the machine element and the adjacent components or the overall system can thus be taken into account.The functionality of the methodology has been developed and briefly demonstrated so far. This paper presents the next level within the development process of the methodology. The necessary components are explained in detail and an AI black box evaluation tool is discussed. This work is based on a test bench that applies dynamically changing states of detuning under superimposed disturbances. Additionally, energy efficiency and performance of the test setup is advanced. As presented, the method opens up the possibility of validating new machine elements in the laboratory under realistic conditions.

PERFORMABILITY EVALUATION OF FAULT-TOLERANT COMPUTER SYSTEMS USING DYQNTOOL+

1995 ◽  
Vol 02 (04) ◽  
pp. 383-404 ◽  
Author(s):  
BOUDEWIJN R. HAVERKORT
Keyword(s):  
Fault Tolerant ◽  
Computer Systems ◽  
Stochastic Petri Nets ◽  
System Behavior ◽  
Queuing Network ◽  
Evaluation Tool ◽  
Network Concept ◽  
And Performance ◽  
Mutual Relations

For fault-tolerant computer systems (FTCS) supporting critical applications, it is of key importance to be able to answer the question of whether they indeed fulfill the quality of service requirements of their users. In particular, answers related to the combined performance and dependability of the FTCS are important. To facilitate these so-called performability studies, we present DYQNTOOL+, a performability evaluation tool based on the dynamic queuing network concept, that allows for a combined modeling of system performance and dependability. Different from other performability evaluation tools, DYQNTOOL+ combines two different modeling paradigms, i.e., queuing networks and stochastic Petri nets, for respectively the performance and the dependability aspects of the system under study. The mutual relations between these two model parts, such as workload-induced failures and performance decreases due to failures, are explicitly modeled as well. By the above choice for such a combination of modeling paradigms, the modeling can be done in greater detail, thereby often revealing system behavior that cannot be revealed otherwise. We present the dynamic queuing network modeling approach and its implementation in DYQNTOOL+, as well as illustrate its usage by addressing a number of examples.

Independent economic think tanks in Russia: evolution and developmental prospects

2015 ◽  
pp. 73-98
Author(s):  
A. Yakovlev ◽  
L. Freinkman ◽  
A. Zolotov
Keyword(s):  
Policy Research ◽  
Think Tanks ◽  
Economic Policies ◽  
Collective Actions ◽  
Current State ◽  
Key Characteristics ◽  
And Performance ◽  
Further Development ◽  
Quality Policy

The paper analyzes the current state and performance of Russia’s think tanks operating in the area of economic analysis. It identifies the main stages of development of this sector, which is new for the country, and the factors shaping its key characteristics. It is argued that overall economic think tanks in Russia have reached a stage of relative maturity, but at the same time the sector has been facing serious problems limiting its further development. The paper emphasizes that in the situation of economic crisis there should be a larger role for independent expertise in supporting development of new economic policies. However, the potential of Russian think tanks could be utilized effectively only if there is a change in the current composition of demand for expertise, to be driven by emergence of new stakeholders who are interested in quality policy research. To maintain professional standards and promote high quality of expertise, collective actions of think tanks themselves are equally important. The paper relies on the results of two surveys of Russian think tanks, undertaken in 2012-2013 and 2015, and also on the interviews with a group of their managers.

scholarly journals THE MANAGEMENT OF MEDICAL REPORT COMPLETENESS FOR THE LEGALITY OF MEDICAL RECORD DOCUMENTS AT RSUD KRMT WONGSONEGORO (RSWN) SEMARANG CITY

2021 ◽  
Vol 20 (2) ◽  
Author(s):  
Suyoko Suyoko
Keyword(s):  
Informed Consent ◽  
Medical Record ◽  
Medical Records ◽  
Hospital Services ◽  
Human Element ◽  
Machine Element ◽  
Medical Disputes ◽  
Machine Elements ◽  
Medical Record Documentation

ABSTRACTBackground: Quality hospital services is reflected in the achieving of medical records. Improper medical record documentation would negatively affect the quality of service delivered to patients and it would disadvantage the hospital when medical disputes occur.Objective:Analyzing the management of medical record completeness at RSWN to guarantee the legality of medical record documents and its effect in supporting the completeness of medical record documents.Method:In this qualitative research,  observation and interviews were conducted to 60 PJRM officers in the Arimbi ward, Banowati, Nakula I and Prabukresna. The obtained data were qualitatively and quantitatively analyzed based on several underlying theories.Results:The results showed that the completeness of some aspects includinghuman, money, method, material and machine elements was proper. The quantitative analysis showed 100%, while the qualitative analysis showed a percentage of 100% with the exception on the informed consent component with the potential for loss of 99%.Conclusions:The human element required periodic outreach to PPA. In the machine element, special computerswere needed for PJRM officers, and the importance of informed consent for patients undergoing hemodialysis to obtain medical records with strong legal force. Key Words           :Management, Medical Record Completeness, Legality of Medical Records.

scholarly journals Performance Contract and Performance Evaluation of State-Owned Enterprises: Insights from the Goal Setting Theory

2013 ◽  
Vol 3 (2) ◽  
pp. 22 ◽  
Author(s):  
Samuel Nana Yaw Simpson
Keyword(s):  
Performance Evaluation ◽  
Goal Setting ◽  
Performance Studies ◽  
Evaluation Tool ◽  
Goal Setting Theory ◽  
Desirable Outcome ◽  
Setting Theory ◽  
And Performance ◽  
Theory Element

Performance contract (PC) is one of the initiatives under the impulse of reforming State-Owned Enterprises (SOEs) to among other things, ensure improved SOE performance. Studies however show mixed results in relation to improved SOE performance, and the general perception is that targets in PCs are not challenging enough. Drawing on the goal setting theory, this article provides further theoretical explanations for the application and impact of PCs using evidence from Ghana, the first Anglophone nation in Africa to adopt and implement the PC reform programmes. Relying primarily on data from PCs, SOE evaluation reports, and interviews, findings suggest that the quality of targets in PCs has been improving over the years. Moreover, the goal setting theory element, commitment, is crucial to achieving desirable outcome from PC as a performance evaluation tool.

Cognitive Health Counseling 40+

2013 ◽  
Vol 21 (1) ◽  
pp. 24-33 ◽  
Author(s):  
Anne Eschen ◽  
Franzisca Zehnder ◽  
Mike Martin
Keyword(s):  
Outcome Variable ◽  
Pilot Phase ◽  
Subjective Memory ◽  
Cognitive Health ◽  
Health Counseling ◽  
Agents Of Change ◽  
Main Outcome Variable ◽  
Further Development

This article introduces Cognitive Health Counseling 40+ (CH.CO40+), an individualized intervention that is conceptually based on the orchestration model of quality-of-life management ( Martin & Kliegel, 2010 ) and aims at improving satisfaction with cognitive health in adults aged 40 years and older. We describe the theoretically deduced characteristics of CH.CO40+, its target group, its multifactorial nature, its individualization, the application of subjective and objective measures, the role of participants as agents of change, and the rationale for choosing participants’ satisfaction with their cognitive health as main outcome variable. A pilot phase with 15 middle-aged and six older adults suggests that CH.CO40+ attracts, and may be particularly suitable for, subjective memory complainers. Implications of the pilot data for the further development of the intervention are discussed.

LIGHTING AND PERFORMANCE: AN ANALYSIS ON LIGHTING EFFICIENCY OF ARCHITECTURE STUDIO

2019 ◽  
Vol 1 (1) ◽  
pp. 92
Author(s):  
Fazidah Hanim Husain
Keyword(s):  
Learning Environment ◽  
Comfort Level ◽  
Artificial Lighting ◽  
Level Measurement ◽  
Acceptable Range ◽  
Creative Learning ◽  
Illuminance Level ◽  
And Performance ◽  
Effect Of Light

Lighting is one of the key elements in any space and building infrastructure. Good design for an area in the building requires sufficient light that contributes to the efficiency of the activities. The correct method allows natural light to transmit, reduce heat and glare in providing a conducive learning environment. Light plays a significant influence to the quality of space and contributes focus of the students in an architecture studio. Previous research has shown that the effect of light also controlled emotions, behavior, and mood of the students. The operations of artificial lighting that have been used most of the time in an architecture studio during day and night may create lavishness and inadequacy at the same time. Therefore, this paper focuses on the identifying the quality of light for the architecture studio in UiTM (Perak), to instill a creative learning environment. Several methodologies adopted in this study such as illuminance level measurement using lux meter (LM-8100), and a questionnaire survey in gauging the lighting comfort level from students’ perspective. The study revealed that the illuminance level in the architecture studio is insufficient and not in the acceptable range stated in the Malaysian: Standards 1525:2007 and  not evenly distributed.  The study also concluded that the current studio environment is not condusive and appears monotonous. 

Strategic threats to energy security as risks of quality of people's life

2020 ◽  
Vol 16 (4) ◽  
pp. 730-744
Author(s):  
V.I. Loktionov
Keyword(s):  
Quality Of Life ◽  
Energy Security ◽  
Well Being ◽  
Scientific Methods ◽  
Analysis And Synthesis ◽  
General Scientific ◽  
And Performance ◽  
Economic Well Being ◽  
The Way

Subject. The article reviews the way strategic threats to energy security influence the quality of people's life. Objectives. The study unfolds the theory of analyzing strategic threats to energy security by covering the matter of quality of people's life. Methods. To analyze the way strategic threats to energy security spread across cross-sectoral commodity and production chains and influences quality of people's living, I applied the factor analysis and general scientific methods of analysis and synthesis. Results. I suggest interpreting strategic threats to energy security as risks of people's quality of life due to a reduction in the volume of energy supply. I identified mechanisms reflecting how the fuel and energy complex and its development influence the quality of people's life. The article sets out the method to assess such quality-of-life risks arising from strategic threats to energy security. Conclusions and Relevance. In the current geopolitical situation, strategic threats to energy security cause long-standing adverse consequences for the quality of people's life. If strategic threats to energy security are further construed as risk of quality of people's life, this will facilitate the preparation and performance of a more effective governmental policy on energy, which will subsequently raise the economic well-being of people.

MODERN EQUIPMENT FOR DETERMINING TRACTOR-SPEED PROPERTIES OF THE VEHICLE: CHARACTERISTICS’ ANALYSIS IN LABORATORY CONDITIONS

2019 ◽  
Vol 16 (3) ◽  
pp. 276-289
Author(s):  
N. V. Savenkov ◽  
V. V. Ponyakin ◽  
S. A. Chekulaev ◽  
V. V. Butenko
Keyword(s):  
Environmental Performance ◽  
Operating Conditions ◽  
Special Role ◽  
Development Stages ◽  
Advantages And Disadvantages ◽  
Force Transfer ◽  
Characteristics Analysis ◽  
And Performance ◽  
Loading Devices ◽  
Structural Solutions

Introduction. At present, stands with running drums are widely used for various types of tests. Power stands play a special role. Such stands take the mechanical power from the driving wheels of the car. This simulates the process of movement of the vehicle under operating conditions. Such equipment has various designs, principles of operation and performance. It is also used in tests that are different by purpose, development stages and types: research, control, certification, etc. Therefore, it is necessary in order to determine the traction-speed, fuel-efficient and environmental performance characteristics.Materials and methods. The paper provides the overview of the power stands with running drums, which are widespread on the domestic market. The authors carried out the analysis of the main structural solutions: schemes of force transfer between the wheel and the drum; types of loading devices; transmission layout schemes and features of the control and measuring complex. The authors also considered corresponding advantages and disadvantages, recommended spheres of application, demonstrated parameters and characteristics of the units’ workflow, presented components and equipment.Discussion and conclusions. The authors critically evaluate existing models of stands with running drums. Such information is useful for choosing serial models of stands and for developing technical tasks for designing or upgrading the equipment.

Return on Invesment (ROI) of Software Product: A Systematic Literature Review

2015 ◽  
Vol 6 (1) ◽  
pp. 50-57
Author(s):  
Rizqa Raaiqa Bintana ◽  
Putri Aisyiyah Rakhma Devi ◽  
Umi Laili Yuhana
Keyword(s):  
Return On Investment ◽  
Assessment Criteria ◽  
Software Product ◽  
And Performance ◽  
Rational Consideration ◽  
Actual Return ◽  
The Cost ◽  
Investment Models ◽  
The Impact

The quality of the software can be measured by its return on investment. Factors which may affect the return on investment (ROI) is the tangible factors (such as the cost) dan intangible factors (such as the impact of software to the users or stakeholder). The factor of the software itself are assessed through reviewing, testing, process audit, and performance of software. This paper discusses the consideration of return on investment (ROI) assessment criteria derived from the software and its users. These criteria indicate that the approach may support a rational consideration of all relevant criteria when evaluating software, and shows examples of actual return on investment models. Conducted an analysis of the assessment criteria that affect the return on investment if these criteria have a disproportionate effort that resulted in a return on investment of a software decreased. Index Terms - Assessment criteria, Quality assurance, Return on Investment, Software product

Application of vacuum belt press filters for cane mud filtration and performance comparison with rotary filters

2014 ◽  
pp. 298-301 ◽  
Author(s):  
Arnaud Petit
Keyword(s):  
Electricity Consumption ◽  
Performance Comparison ◽  
Operating Conditions ◽  
Vacuum Filter ◽  
Sugar Mill ◽  
Belt Press ◽  
Vacuum Belt ◽  
And Performance ◽  
Mud Filtration ◽  
The Impact

Bois-Rouge factory, an 8000 t/d cane Reunionese sugarcane mill, has fully equipped its filtration station with vacuum belt press filters since 2010, the first one being installed in 2009. The present study deals with this 3-year experience and discusses operating conditions, electricity consumption, performance and optimisation. The comparison with the more classical rotary drum vacuum filter station of Le Gol sugar mill highlights advantages of vacuum belt press filters: high filtration efficiency, low filter cake mass and sucrose content, low total solids content in filtrate and low power consumption. However, this technology needs a mud conditioning step and requires a large amount of water to improve mud quality, mixing of flocculant and washing of filter belts. The impact on the energy balance of the sugar mill is significant. At Bois-Rouge mill, studies are underway to reduce the water consumption by recycling low d.s. filtrate and by dry cleaning the filter belts.

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