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Tytuł:
A method for evaluating and upgrading systems with parallel structures with forced redundancy
Autorzy:
Michlowicz, Edward
Wojciechowski, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/2038110.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
evaluation and retrofit method
parallel structure
redundancy
safety
process energy consumption
Opis:
The objects of the study are parallel-structure machine systems with redundancy associated with safety assurance of continuous material flow. The problem concerns systems in which the supply of materials takes place continuously (24 hours a day), and the system of operated machines must ensure the receipt and movement of the material at a strictly defined time and in the desired quantity. It is a system where the presence of a failure poses a threat to human life and environmental degradation. This paper presents a method for system condition assessment and upgrading for maintaining proper operation under conditions of continuous operation. A database of information about the current parameters of the system components (measurements, monitoring) is necessary for condition assessment. The method also uses lean techniques (including TPM). System evaluation and selection criteria for a suitable structure in terms of further operation were proposed. Exemplification was performed for an underground mine drainage system. As a part of the identification, selected parameters of the system components were measured, and their characteristics (motors, pumps, pipelines) were developed. The results of the analysis and the values of the adopted criteria were compared to the indicators for new pump sets. A two-option system upgrade was proposed, in addition to machine operating schedules, maintenance periods, and overhaul cycles.
Źródło:
Eksploatacja i Niezawodność; 2021, 23, 4; 770-776
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new approach in separation process evaluation. Efficiency ratio and upgrading curves
Autorzy:
Irannajad, M.
Nuri, O. S.
Allahkarami, E.
Powiązania:
https://bibliotekanauki.pl/articles/110189.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
separation efficiency
mineral processing
selectivity index
process evaluation
efficiency ratio
operation efficiency
Separation Process
Opis:
In mineral processing separation efficiency (SE), operation efficiency (OE), selectivity index (SI) and other indices have been used to evaluate the separation process. Up to now, no study has been conducted on the relationship between the SE, OE and SI indices. In this research, two upgrading curves are proposed based on the above indices for process and selectivity evaluation. The first upgrading curve is based on recovery R, SE, and OE as a function of concentrate grade. This curve has three background lines, including no upgrading line, ideal upgrading line and the ideal mixing line. The proposed upgrading curve is applicable not only for process evaluation by specification of OE and SE, but also for selectivity evaluation with the lowest difference between SE and OE. The curve showed that the recovery value is always greater than the SE and OE values. The parameters of OE, SE and R were used for plotting the upgrading curve as a function of concentrate grade taking into consideration all of them at a time. A new selectivity indicator, namely Efficiency Ratio (ER) as the selectivity parameter, is proposed as the ratio of OE to SE. The ER values fluctuate between 1 and . It can be presented as a function of concentrate and tailing grades (ER = [c(1-t)]/[1(c-t)]). The results showed that ER is insensitive to the feed grade and has the inverse relationship with SI. To measure the separation selectivity, another upgrading curve is proposed based on ER and SI parameters. This curve is divided into seven separation classes for evaluation the class of a separation process from ideal class to no separation one. The results of this research can be useful for separation process evaluation.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 3; 847-857
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accelerated degradation analysis based on a random-effect Wiener process with one-order autoregressive errors
Przyspieszona analiza degradacji w oparciu o proces Wienera z efektem losowym z błędami autoregresyjnymi pierwszego rzędu
Autorzy:
Li, Junxing
Wang, Zhihua
Liu, Chengrui
Qiu, Ming
Powiązania:
https://bibliotekanauki.pl/articles/301246.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
reliability evaluation
accelerated degradation modeling
Wiener process
unit-to-unit variability
measurement errors
ocena niezawodności
przyspieszone modelowanie degradacji
proces Wienera
zmienność między jednostkami
błędy pomiaru
Opis:
For highly reliable and long-life products, accelerated degradation test (ADT) is often an effective and attractive way to assess the reliability. To analyze the accelerated degradation data, it has been well recognized that it is necessary to incorporate three sources of variability including the temporal variability, the unit-to-unit variability and measurement errors into the ADT model. The temporal variability can be properly described by the Wiener process. However, the randomness of the initial degradation level, which is an important part of the unit-to-unit variability, has been often neglected. In addition, regarding the measurement errors, current ADT models often assumed them to follow a mutually independent normal distribution and ignored the autocorrelation that may probably exist in them. These problems lead to a poor accuracy for reliability evaluation in some situation. Thus, a random-effect Wiener process-based ADT model considering one-order autoregressive (AR(1)) errors is proposed. Then closed-form expressions for the failure time distribution (FTD) is derived based on the concept of first hitting time (FHT). A statistical inference method is adopted to estimate unknown parameters. Finally, a comprehensive simulation study and a practical application are given to demonstrate the rationality and effectiveness of the proposed model.
W przypadku wysoce niezawodnych produktów o długim cyklu życia, przyspieszone badanie degradacji (ADT) często stanowi skuteczny i atrakcyjny sposób oceny niezawodności. Jak wiadomo, analiza danych z przyspieszonej degradacji wymaga włączenia do modelu ADT trzech źródeł zmienności, w tym zmienności czasowej, zmienności między jednostkami i błędów pomiarowych. Zmienność czasową można odpowiednio opisać za pomocą procesu Wienera. Jednak losowość początkowego poziomu degradacji, który stanowi ważną część zmienności między jednostkami, jest często w badaniach pomijana. Ponadto, w odniesieniu do błędów pomiaru, obecne modele ADT często zakładają, że mają one wzajemnie niezależne rozkłady normalne, ignorując możliwą autokorelację. Problemy te prowadzą w niektórych sytuacjach do niskiej trafności oceny niezawodności. W związku z powyższym, zaproponowano model ADT oparty na procesie Wienera z efektem losowym, w którym uwzględniono błędy autoregresyjne pierwszego rzędu (AR (1)). Następnie, w oparciu o pojęcie pierwszego czasu przejścia, wyprowadzono wyrażenia w postaci zamkniętej dla rozkładu czasu uszkodzenia (FTD). Do oszacowania nieznanych parametrów przyjęto metodę wnioskowania statystycznego. Na koniec przedstawiono kompleksowe studium symulacyjne i wskazano praktyczne zastosowanie modelu w celu wykazania jego racjonalności i skuteczności.
Źródło:
Eksploatacja i Niezawodność; 2019, 21, 2; 246-255
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aktualne zagadnienia niezawodności i bezpieczeństwa systemów technicznych
Current problems of technical systems reliability and safety
Autorzy:
Kołowrocki, K.
Soszyńska-Budny, J.
Powiązania:
https://bibliotekanauki.pl/articles/2069729.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
complex system
reliability
safety
operation process
evaluation
prediction
optimization
system złożony
niezawodność
bezpieczeństwo
proces eksploatacji
ocena
predykacja
optymalizacja
Opis:
Integrated Safety and Reliability Decision Support System - IS&RDSS is presented in the form of detailed and clear scheme-algorithm. There is also presented the methodology of IS&RDSS that is composed of the methods of complex technical systems operation processes modelling, their unknown parameters concerning operation, reliability, availability, safety models identification, their reliability, availability and safety evaluation and prediction, their reliability, availability and safety improvement and their operation, reliability, availability, safety and cost optimization. The newest trends in the reliability and safety of complex technical systems analysis directed to the critical infrastructures and the nanosystems are describe as well.
Źródło:
Journal of Polish Safety and Reliability Association; 2011, 2, 3; 1--8
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An heuristic approach for mapping landslide hazard by integrating fuzzy logic with analytic hierarchy process
Autorzy:
Gorsevski, P. V.
Jankowski, P.
Gessler, P. E.
Powiązania:
https://bibliotekanauki.pl/articles/970478.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
osuwisko
Analityczny Proces Hierarchiczny (AHP)
modelowanie
landslide
multiple criteria evaluation
analytic hierarchy process (AHP)
weighted linear combination
ordered weighted averaging
modeling
Opis:
This study presents an integration of fuzzy sets theory with analytic hierarchy process (AHP) to model landslide hazard. The approach involves developing expert knowledge from existing landslide datascts which arc used for standardizing digital terrain attributes, a pairwise comparison method for the elicitation of attribute weights, and their subsequent aggregation through weighted linear combination (WLC) and ordered weighted average fOWA) function to generate landslide hazard maps. The approach enhances tlic methodology for modeling landslide hazard in roaded and roadless areas through the derivation of probabilistic maps. The maps can be used as a decision support tool in forest management and planning. A case study from the Clearwater National Forest in central Idaho, USA, illustrates the application of the approach in a practical setting.
Źródło:
Control and Cybernetics; 2006, 35, 1; 121-146
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza podejmowanych działań i uzyskiwanych rezultatów w procesie resocjalizacji nieletnich
Analysis of undertaken actions and obtained results in the process of social rehabilitation of minors
Autorzy:
Siemionow, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/1371614.pdf
Data publikacji:
2014-12-30
Wydawca:
Fundacja Pedagogium
Tematy:
ewaluacja w pracy resocjalizacyjnej
indywidualny proces resocjalizacji
efektywność procesu resocjalizacji
social rehabilitation process
socially maladjusted
evaluation
effectiveness
Opis:
Artykuł dotyczy ewaluacji działań planowanych i prowadzonych w ramach procesu resocjalizacji nieletnich niedostosowanych społecznie przebywających w Młodzieżowym Ośrodku Wychowawczym, w perspektywie indywidualnej jak i grupowej. Proces resocjalizacji w instytucji ma określoną dynamikę uzależnioną m.in. od organizacji pracy instytucji, zaburzeń zachowania ujawnianych przez podopiecznych, zasobów kadrowych. Ewaluacja jest działaniem na stałe wpisanym w funkcjonowanie instytucji resocjalizacyjnej, pozwalającym na systematyczne podnoszenie efektywności prowadzonych w niej oddziaływań. Stąd też równie istotnym pojęciem omawianym w tym opracowaniu jest efektywność procesu resocjalizacji. Z prowadzonych rozważań wynika jasno, że ewaluacja i efektywność nie są pojęciami tożsamymi, jednak pozostają względem siebie w określonej zależności. Proponowane tu rozwiązania praktyczne z powodzeniem mogą być zastosowane w pracy zespołów wychowawczych, funkcjonujących w instytucjach opiekuńczo-wychowawczych.
The article concerns an evaluation of planned and conducted actions within the process of social rehabilitation of minors socially maladjusted residing at the Youth Educational Centre. The process of psychological change is very complicated, there are many factors which influence it, especially if it is associated with the socially maladjusted. This process needs to be analyzed from time to time, but systematically. The evaluation process is always related with the assessment, but it is much more complex. It is the analysis of the activities – favourable and unfavourable factors. This article includes a few proposals which can be used by educators and teachers.
Źródło:
Resocjalizacja Polska; 2014, 8; 43-53
2081-3767
2392-2656
Pojawia się w:
Resocjalizacja Polska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ANALIZA WYBRANYCH PODRĘCZNIKÓW DO NAUCZANIA JĘZYKA POLSKIEGO JAKO OBCEGO W KONTEKŚCIE EDUKACJI SENIORÓW
Analysis of selected Polish as a foreign language course books in the context of the education of seniors
Autorzy:
Fiema, Mariola
Janowska, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/442901.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu. Collegium Novum. Polskie Towarzystwo Neofilologiczne
Tematy:
glottogeragogics
senior
learning process
evaluation of language teaching materials
course book
glottogeragogika
proces uczenia się/nauczania
ewaluacja materiałów dydaktycznych
podręcznik
Opis:
The main aim of the article is to direct attention towards the specific educational needs of elderly people who are learning a foreign language. One of the main points of this paper is to describe seniors and present biological, psychological, cultural and social factors that affect their SLA (Second Language Acquisition) process. Course books used for the process of learning Polish as a foreign language have also been analyzed on the basis of their usefulness for seniors. The analysis of the course books was conducted on the basis of specially prepared criteria for the evaluation of language teaching materials.
Źródło:
Neofilolog; 2017, 49/1; 133-150
1429-2173
Pojawia się w:
Neofilolog
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the Applicability of Aluminum Alloy Welding Processes during the Prefabrication of Ship Structures Based on the Multi-Index Method
Autorzy:
Urbański, Tomasz
Taczała, Maciej
Wąs, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/2201867.pdf
Data publikacji:
2023
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
ship structures
prefabrication process
aluminum alloys welding
welding processes
evaluation criteria
multi-index evaluation
Opis:
The purpose of the paper is to evaluate the processes of welding aluminum alloys in terms of their applicability to the process of prefabrication of ship structures. The prefabrication process requires solving a number of problems related to the welding processes used (e.g. the problem of welding incompatibilities, deformations). Therefore, the key issue is to choose the right welding process, which is complex and difficult. It requires analysis of the process considering many points of view (e.g. technological, economic, security) in order to maximize the objectivity of the choice. Therefore, an attempt at a comprehensive view requires the formulation of a set of accurate evaluation criteria. The multi-indicator expert assessment presented in the article makes it possible to make such a choice. Currently used methods of welding aluminum alloys, both those from the group of conventional and innovative methods, were assessed. As a result of the analysis, the so-called technological hierarchy that allows to rank the assessed processes in terms of their suitability in the process of prefabrication of ship structures.
Źródło:
Advances in Science and Technology. Research Journal; 2023, 17, 1; 133--139
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the modernized production system through selected TPM method indicators
Autorzy:
Michlowicz, Edward
Powiązania:
https://bibliotekanauki.pl/articles/2200930.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
continuous production system
system modernization
post-modernization evaluation
evaluation indices
OEE
MTTR
MTBF
process monitoring
Opis:
The subject of the studies is the evaluation of the operation of a production system after modernization. The analysed case concerns the modernization forced by the end of the product lifetime. The proposed methodology is that of a multicriterial evaluation of the system operation after modernization. The evaluation criteria are selected TPM indices: availability of machinery and equipment, production process capacity, product quality and overall equipment effectiveness (OEE). The additional criteria are reliability indices MTBF and MTTR of studied production lines and the MTTR of the most unreliable equipment in each analysed line. A yearly monitoring of production process was proposed for obtaining the statistical credibility of the evaluation results. Additionally, a fuzzy indicator of acceptability of the modernization assessment was proposed. The paper presents the results of studies of the system for production of zinc concentrate from post-production waste. The obtained values of OEE, MTBF and MTTR indicators for the three tested lines make it possible to state that the modernization carried out is acceptable.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 4; 677--686
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bank business model as a supervisory perspective. Conditions and influences
Autorzy:
Nosowski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/949775.pdf
Data publikacji:
2017
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
bank business model
business model analysis
supervisory review and evaluation process
Opis:
Analysing the banking business model as a supervisory perspective is a new way of monitoring the actions of supervised institutions, which significantly increases control. An additional analysis of banking business models can supply useful tools for understanding the nature of risks related to a given banking business model, and its influence on systemic risk. These tools are useful to market participants and regulation and supervisory institutions. The main goal of this article is an identification of contexts and conditions of the banking business model as a supervisory perspective. This approach allows to perceive its characteristics, aims, and methodology requirements. The supervisory perspective on business models was also compared to other practical and theoretical approaches, creating analytical context. An analysis of European guidelines for business models as a supplementary supervision practice, and their implementation in Poland was performed as well
Źródło:
Financial Sciences. Nauki o Finansach; 2017, 2(31); 66-78
2080-5993
2449-9811
Pojawia się w:
Financial Sciences. Nauki o Finansach
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Challenges of science from the point of view of the National Science Center
Autorzy:
Kossowka, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/703506.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
challenges of science
improvement of the evaluation process
open science
and open access
integrity and ethics in science
Opis:
Scientists around the world agree that nowadays, science is facing severe challenges like poor peer-review system, replicability crisis, or locked science behind paywalls. The National Science Center addresses at least some of them by introducing procedures that promote integrity, ethics, social responsibility, transparency, and openness in science.
Źródło:
Nauka; 2019, 3
1231-8515
Pojawia się w:
Nauka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Collaborative 3D-To-2D Tight-Fitting Garment Pattern Design Process for Scoliotic People
Proces projektowania odzieży dla osób ze skoliozą przy użyciu skanera 3D
Autorzy:
Hong, Y.
Zeng, X.
Bruniaux, P.
Liu, K.
Chen, Y.
Zhang, X.
Powiązania:
https://bibliotekanauki.pl/articles/232785.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
atypical morphology
virtual prototyping
collaborative design
sensory evaluation
design process
nietypowa morfologia
projektowanie wirtualne
ocena sensoryczna
proces projektowania
Opis:
This paper presents a virtual design process for a tight-fitting garment pattern for adapter consumer garments, aimed at consumers with scoliosis. The design process proposed is based on a virtual human model created using a 3D scanner, allowing simulation of the morphological shape of an individual with atypical physical deformations. Customized 2D and 3D virtual garment prototyping tools are used in combination to create products through interactions between the consumer, designer and pattern maker. After following an interactive sequence: Scanning – Design – Display – Evaluation – Adjustment, a final design solution acceptable to both the designer and consumer can be obtained. Through this process, traditional 2D garment design knowledge, especially design rules influenced by the fabric information, is fully utilized to support the design process proposed. Using the knowledge based collaborative design process, design satisfaction can be largely improved.
W artykule przedstawiono wirtualny proces projektowania wzoru odzieży dla osób ze skoliozą. Zaproponowany projekt jest oparty na wirtualnym modelu ciała człowieka stworzonym przy użyciu skanera 3D, umożliwiającego symulację morfologicznego kształtu ciała osoby o nietypowych deformacjach fizycznych. Po wykonaniu sekwencji interaktywnej: skanowanie – projekt – wyświetlacz – ocena – dostosowanie, można uzyskać ostateczne rozwiązanie projektowe akceptowalne zarówno dla projektanta, jak i dla konsumentów. W tym procesie tradycyjna wiedza z zakresu zasad projektowania odzieży 2D jest w pełni wykorzystywana w celu wspierania zaproponowanego procesu projektowania. Korzystając z kombinacji obu systemów 2D i 3D można w znacznym stopniu poprawić jakość otrzymanego projektu. Udane rozwiązania projektowe można zintegrować z bazą wiedzy o projektowaniu mody, aby tworzyć nowe zasady projektowania i rozszerzać profesjonalną wiedzę dotyczącą projektowania.
Źródło:
Fibres & Textiles in Eastern Europe; 2017, 5 (125); 113-118
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Communication processes, public administration and performance evaluation
Autorzy:
Musaraj, Arta
Powiązania:
https://bibliotekanauki.pl/articles/1035776.pdf
Data publikacji:
2011
Wydawca:
Academicus. International Scientific Journal publishing house
Tematy:
public administration
communication process
service delivery
performance evaluation
communications tools
Opis:
Albanian efforts to fulfill European standards and norm in its Public Administration and service delivery, are becoming a research argument for academics and practitioners as well. Even if significant efforts have been made in this direction there is still a gap in analyzing the link between the communication process which creates and delivers the public service, effect of the used tools in service provision and delivery, the performance evaluation of this sector and the future of the sector itself affected by the intersection of these factors. This brings a great necessity to watch very close those evolutions, processes and the impacts they have in the Albanian social tissue. At the same time, it is very important to understand what streamline has been followed till now by micro and macro huge progresses which have affected the systems, the relations between pairs which not necessarily are being expressed in standards. There is no sustainable change or improvement, if they aren’t built at the cellular level, and when we talk about the state, institutions and citizens, the way they relate, if it is standardized or not by laws or procedures, it becomes the most important reading that we must do to understand the substratum of those progresses. Relations, communications and the future of the communicative situations between citizens and public operators including the public administration during the public service proceedings, indicate the quality and sustainability of Albanian evolutions in social view, as well as the forecasting we can do regarding their impact in the future. Tools by which strategies have been applied, seems to affect the process as well as affect pairs perception of fairness, justice and low conformity. This oblige us investigate about effects and impacts they have had during the service proceedings. We may judge the transparence’s perception related to how much equal citizens consider they are being treated by public operators, what’s its influence in trust climate, notably on the citizens trust towards public administration, whose salaries are being paid by public and who theoretically must carry over public interest. We may, as well, investigate the impact that this variable has had in the new dimension of accountability which is a strong indicator of the evolution of public administrations in Albania, showing how the way public services are being delivered and how much the public itself is actually ruling through a careful reading of the communications hold between them and public administrations.
Źródło:
Academicus International Scientific Journal; 2011, 03; 28-37
2079-3715
2309-1088
Pojawia się w:
Academicus International Scientific Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Concept of the organization process maturity assessment
Autorzy:
Sliż, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/522118.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Evaluation of process maturity
MMPM
Process approach
Process management
Process maturity
Opis:
Aim/purpose – The aim of this article is to present the concept of a multicriteria model of process maturity assessment (MMPM), which allows to assess the degree of implementation of process solutions with respect to three dimensions: short-term, long-term and systemic. Design/methodology/approach – The characteristics of the model presented in the article was preceded by a review of the literature and the analysis of secondary research related to the assessment of the degree of implementation of elements of the process approach in management. Findings – As a result of the review of the literature and the analysis of secondary re-search, a thesis was formulated that quantitative research using the existing methodolo-gies for identifying the implementation of a process approach in management is insuffi-cient in the precise assessment of the organization’s process maturity. This means that they should be extended to include qualitative research. The solution to this problem may be the use of a multidimensional model of process maturity assessment of the organization. Research implications/limitations – The application of MMPM makes it possible to assess the degree of implementation of the process approach elements using the opinion poll method. This means that the results may be subject to random or non-random errors, depending on the selection technique of the research sample. At this point, it should also be emphasized that in order to provide a precision assessment of process maturity using the MMPM, the questions in the questionnaire should be adapted to the specifics of the area under examination. Originality/value/contribution – The scope of this article fills in the research gap that exists in terms of assessing the process maturity of the organization in the long run, understood as defining the direction of development, stagnation or atrophy of implementation of process solutions in the organization. The concept of the MMPM presented in the article makes it possible to assess process maturity in three dimensions: short-term, long-term and system-based. In addition, the structure of the model enables the reconfiguration of the research questionnaire with questions of a self-reinforcing character by the respondent to questions, enabling the assessment of the level of maturity on the basis of symptoms.
Źródło:
Journal of Economics and Management; 2018, 33; 80-95
1732-1948
Pojawia się w:
Journal of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development and Performance Evaluation of a Pulverizer for Plantain Flour Process Plant
Autorzy:
Olutomilola, Emmanuel Olatunji
Ayodeji, Sesan Peter
Adeyeri, Michael Kanisuru
Fagbemi, Tayo Nathaniel
Powiązania:
https://bibliotekanauki.pl/articles/23965544.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
cukrzyca COVID 19
rozwój pulweryzatora
ocena wydajności
zakład przetwarzania mąki
diabetes COVID-19
pulverizer development
performance evaluation
plantain
flour process plant
Opis:
Diabetes, adjudged a risk factor for coronavirus infectious disease 2019 (COVID-19), can be managed through consumption of plantain and its associated products. Plantain is usually processed into flour and other storable/value-added products due to its very short shelf-life. To process unripe plantain pulps into flour, there is a need for size reduction after drying. This paper presents the development and performance evaluation of a size reduction unit for pulverizing, sieving and conveying material to the next processing stage in a plantain flour process plant. Its model was developed using solidworks application software. After design analysis, the model was simulated to establish its suitability/adequacy for fabrication. The pulverizer was fabricated using locally available materials. Its performance evaluation gave 400kg/h throughput, 96% crushing efficiency and 96% efficiency based on the required particle size. The average particle size of flour obtained was 236μm using 500μm screen. Effect of cyclone control-valve on the pulverizer’s overall efficiency was also investigated by allowing it to operate when the valve was completely closed, partially closed and fully opened. It was observed that the control-valve’s positions significantly influenced the machine’s performance/efficiency. It can thus be inferred that the position of cyclone control-valve has significant effect on a pulverizer’s efficiency/performance. Hence, leaving control-valve fully opened during operation would help a pulverizer perform with optimum efficiency, as the pulverizer was able to convey material, efficiently in that position, to the next processing stage during performance evaluation.
Źródło:
Production Engineering Archives; 2021, 27, 3; 223--231
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 56

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