Cracking the Assessment Criterion

1956 ◽  
Vol 1 (11) ◽  
pp. 333-334
Author(s):  
KENNETH R. HAMMOND
Keyword(s):  
2020 ◽  
pp. 34-42
Author(s):  
Liudmyla Kryvoplias-Volodina ◽  
Oleksandr Gavva ◽  
Anastasiia Derenivska ◽  
Oleksandr Volodin

The complex of technical means for optimization synthesis of assembling of a packing machine of separate functional modules has been developed. The method of synthesis of a packing machine, based on criterial assessment of separate functional modules (FM), combined by two main assessment groups, has been offered. FM may be selected and calculated by the program of consumption, based on the overall equipment effectiveness (OEE) criterion. An example of synthesis, based on the offered method, takes into account variants of choice of ready functional modules, based on the hierarchic structure of a module of roll packing material supply. The method takes into account the systemic approach to analysis of equipment constructions for packing fine-piece and piece food products in a consumption package. The synthesis of FM assembling as conceptual models, abstract ones, reflecting the construction structure and connections between separate elements – functional devices (FD) – has been offered. The optimal assembling of the functional device in the structure of the functional module of roll packing material supply has been determined. As a result of solving this problem, a FM1 prototype has been created. At conducting the comparative analysis with the existent equipment, the automatic functional device has been modeled. The use of the OEE criterion with joint properties that reflects the generalized assessment of a packing machine or functional module with a maximin (minimax) criterion by the compromise principle has been substantiated. The analysis is grounded on the idea of optimality of each module or device of the machine for packing food products at adding each next functional module to its composition. The program of assessment calculation of the package equipment with the complex assessment criterion OEE for different assembling of FMi machines for packing piece and fine-piece products has been developed. The FM of roll film material supply with using a microprocessor managing device that maintains a sinusoidal law of movement of a stretching roll of the packing machine has been developed. Optimal characteristics of the technical system have been determined. Results, obtained at processing experimental data, confirm adequacy of the offered method for assessing assembling solutions


2020 ◽  
Vol 5 (1) ◽  
pp. 90-95
Author(s):  
Romindo Romindo

The selection of the best lecturers gives recognition to lecturers who carry out tridharma higher education activities, whose results can be proud of and are useful for advancing academic and institutional quality. Educational institutions, especially the Ganesha Medan Polytechnic, annually select the best lecturers by conducting assessments by distributing questionnaires to their students. However, the assessment process is still done manually, so it takes a long time to process the data. In addition, the assessment is still not relevant to the actual situation because it only uses one assessment criterion, namely a student assessment questionnaire. Based on this, in this study, a decision support system design was used to select the best lecturers at the Ganesha Medan Polytechnic. Decision support systems built on a web basis using the PHP programming language and MySQL database. The decision making method used is the Simple Additive Weighting (SAW) method. This method is used to perform the best alternative ranking process from a number of alternatives.


2015 ◽  
Vol 10 (2) ◽  
pp. 52
Author(s):  
Boris Konoplev ◽  
Igor Lysenko ◽  
Olga Ezhova

The assessment criterion of rigidity of comb electrodes fingers of the microelectromechanical converters is developed. The assessment criterion allows to estimate the maximum electrodes fingers length to decrease approach probability of snap-down effect. The modeling results have been analyzed. The estimations of the maximum length of electrodes fingers are obtained. The estimates depend on length of electrodes fingers overlapping and applied voltage. The dependences of the maximum length of comb electrodes fingers on length of their overlapping and applied voltage are showed. Since all of the electromechanical converters are reversible, i.e. the converters can work as electrostatic actuators, as well as capacitive displacement transducers. If certain conditions occurs, the capacitive displacement transducers will start to work like electrostatic actuators. The criteria allowed to define these invertibility condition can be obtained from the equilibrium equations of sensitive elements of micromechanical devices. The proposed assessment criterion of the maximum length of combs electrodes fingers can be used to design micromechanical devices.


Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3421 ◽  
Author(s):  
Björn Nienborg ◽  
Tobias Helling ◽  
Dominik Fröhlich ◽  
Rafael Horn ◽  
Gunther Munz ◽  
...  

Closed adsorption storages have been investigated in several projects for heat storage in building applications with focus on energy density and performance. This study complements this research with the assessment of the environmental impacts over the life cycle. Global warming potential (GWP) was chosen as the assessment criterion. Selected sorption materials in combination with water as the refrigerant were analyzed first by themselves and then embedded in a generic storage configuration. Sensible storage in water served as the reference benchmark. Results on material and component level showed that the relative storage capacity compared to water under realistic operating conditions reached values of below 4 and 2.5, respectively, in the best cases. Since the effort for producing the sorbents as well as the auxiliary material demand for assembling storage components was significantly higher than in the reference case, the specific environmental impact per storage capacity also turned out to be ~2.5 to ~100 times higher. We therefore suggest focusing sorption storage research on applications that (a) maximize the utilization of the uptake of sorbents, (b) do not compete with water storages, and (c) require minimal auxiliary parts.


2020 ◽  
Vol 10 (1) ◽  
pp. 19 ◽  
Author(s):  
Sofie Pedersen ◽  
Mads Hobye

Employing student-driven project work in a higher education setting challenges not only the way in which we understand students’ learning and how we define the expected learning outcomes, it also challenges our ways of assessing students’ learning. This paper will address this question specifically and illustrate with a case that highlights some of the challenges that may arise in practice when assessing student-driven, problem-based projects. The case involved an assessment situation in which a discrepancy arose between the internal and external examiner in relation to what was valued. The discrepancy had consequences not only for the concrete assessment of students’ work, but also for the validity of the problem-based university pedagogy in general, and it raised the question of how to assess students’ work adequately. The research focus of this study was to explore the implications of assessing student-driven projects within a progressive approach to higher education teaching, along with the potential underlying issues. We found a need for clear assessment criteria while insisting on a space for students’ creativity and reflexivity as essential parts of a learning process. The paper thus makes a case for the notion of reflexivity as an assessment criterion to be integrated into learning objectives.


2000 ◽  
Vol 12 (2) ◽  
pp. 305-311 ◽  
Author(s):  
N. M. Adams ◽  
D. J. Hand

In this note we use examples from the literature to illustrate some poor practices in assessing the performance of supervised classification rules, and we suggest guidelines for better methodology. We also describe a new assessment criterion that is suitable for the needs of many practical problems.


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