scholarly journals Application of lean manufacturing technology in a milk manufacturing company

2021 ◽  
Vol 5 (2) ◽  
pp. 87-97
Author(s):  
Morakinyo Kehinde Onifade ◽  
Olufemi Adebayo Oroye
Keyword(s):  
Time Series ◽  
Lean Manufacturing ◽  
Function Technique ◽  
Actual Usage ◽  
Linear Transfer Function ◽  
Powder Milk ◽  
Manufacturing Procedure ◽  
Management Principle ◽  
Production Company ◽  
Actual Loss

This work presents the application of lean management principle in the area of waste elimination in a powder milk plant of a production company. The existing manufacturing procedure for the company’s plant was evaluated, and a lean manufacturing technique was developed for the plant. To achieve this, a time series analysis was carried out on the econometric data obtained, and a future forecast predicting losses and usage was predicted based on the practised manufacturing procedures. The econo­metric linear transfer function technique applied to the actual usage and actual loss data obtained filtered the waste in the production process and generated forecast values for actual loss and usage.   This revealed that there had been poor manufacturing practices in the factory. The findings from this research can be used as a guide to managers on wastage control in a production system.

scholarly journals Lean Manufacturing Effects in a Serbian Confectionery Company – Case Study

Organizacija ◽  
2014 ◽  
Vol 47 (3) ◽  
pp. 143-152 ◽  
Author(s):  
Ilija Djekic ◽  
Dragan Zivanovic ◽  
Sladjana Dragojlovic ◽  
Radoslava Dragovic
Keyword(s):  
Problem Solving ◽  
Lean Manufacturing ◽  
Visual Control ◽  
Kaizen Events ◽  
Lean Tools ◽  
Five Phases ◽  
Production Company ◽  
Maintenance Process ◽  
Mean Time

AbstractBackground and Purpose: The objective of this paper was to evaluate effects of implementing lean manufacturing in a Serbian confectionery production company during a period of 24 months, emphasizing observed benefits and constrains. Company ‘case study’ is a leading confectionery producer in Serbia with annual production of more than 25,000 t.Methodology/Approach: The research method was case study. The approach in implementing lean manufacturing was structured in five phases, as follows: (i) training, (ii) analysis of lean wastes on one technological line, (iii) choice of lean tools to be implemented in the factory, (iv) implementation of lean tools in production and maintenance, (v) development of continual improvement sector and further deployment of lean tools.Results: Lean manufacturing tools implemented in the production process were visual control and single minute exchange of dies (SMED). Maintenance process implemented 5S with total productive maintenance (TPM) and problem solving sessions being the tools implemented in both processes. During the observed period, results of these tools showed the following: visual control tables initiated 61 improvement memos out of which 39% were fully implemented; a total of 2284 minor problems had been recorded, with over 95% of issues revealed in due time; total SMED time decreased for 7.6%; 19 problem solving sessions were initiated with 58% of solving effectiveness, and the remaining converted to on-going projects. In maintenance 5S improved from 29.9 to 60.3; overall equipment effectiveness (OEE) indicator increased from 87.9% to 92.3%; mean time between failure (MTBF) increased for 16.4%. Conclusion: As a result of all activities, 20 in-house trainings and 2 ‘kaizen’ events including motivational training have been initiated with 54 documents being revised and improved in order to contribute to more efficient processes.

scholarly journals Διαχρονική εξέλιξη αντοχής στην κολιμυκίνη πολυανθεκτικών στελεχών klebsiella pneumoniae που απομονώθηκαν από το αίμα ασθενών

2020 ◽  
Author(s):  
Γιαννούλα Τάνσαρλη
Keyword(s):  
Time Series ◽  
Regression Analysis ◽  
Klebsiella Pneumoniae ◽  
Standard Error ◽  
Linear Regression Analysis ◽  
Point Estimate ◽  
Transfer Function Model ◽  
Function Model ◽  
Slope Coefficient ◽  
Linear Transfer Function

Η βακτηριαιμία από Klebsiella pneumoniae που παράγει καρβαπενεμάσες (CP-Kp) σχετίζεται με υψηλά ποσοστά θνητότητας και συχνά, η κολιμυκίνη αποτελεί το μοναδικό αντιβιοτικό που διατηρεί δραστικότητα έναντι αυτών των παθογόνων μικροοργανισμών. Στην παρούσα μελέτη i) ελέγξαμε τη δραστικότητα αντιβιοτικών «τελευταίας γραμμής» έναντι CP-Kp στελεχών που απομονώθηκαν από το αίμα ασθενών που νοσηλεύτηκαν στο Λαϊκό νοσοκομείο την περίοδο 2002-2016 και ii) διερευνήσαμε την εξέλιξη της αντοχής στην κολιμυκίνη την ίδια χρονική περίοδο, καθώς και την ύπαρξη δυναμικής συσχέτισης μεταξύ της αντοχής στην κολιμυκίνη και της χρήσης του αντιβιοτικού. Συνολικά, 313 στελέχη βρέθηκαν θετικά για την παραγωγή τουλάχιστον μίας καρβαπενεμάσης με τη μέθοδο της πολυπλεκτικής PCR κατά την χρονική περίοδο της μελέτης μας και ονομάστηκαν CP-Kp (carbapenemase-producing K. pneumoniae). Από τα 313 CP-Kp στελέχη, τα 197 (62,9%) ήταν ανθεκτικά στη μεροπενέμη (ΕΑΠ >8 mg/L), τα 79 (25,2%) είχαν ΕΑΠ στη μεροπενέμη που κυμαινόταν στο εύρος 4–8 mg/L και τα 37 (11,8%) ήταν ευαίσθητα (ΕΑΠ ≤2 mg/L). Όσον αφορά τα υπόλοιπα αντιβιοτικά που ελέγχθηκαν, 35,1% (110/313) ήταν ανθεκτικά στην κολιμυκίνη, 30% (94/313) στη φωσφομυκίνη και 5,4% (17/313) στην τιγκεκυκλίνη. Η πολυμυξίνη Β παρουσίασε το ίδιο προφίλ ευαισθησίας με την κολιμυκίνη και οι τιμές ΕΑΠ διέφεραν κατά μία ή δύο αραιώσεις, χωρίς διαφορά στην κατηγοριοποίηση των αποτελεσμάτων ως ευαίσθητα ή ανθεκτικά. Από τα 313 στελέχη που περιείχαν γονίδια που κωδικοποιούσαν καρβαπενεμάσες, 198 (63,3%) ήταν KPC, 89 (28,4%) ήταν VIM, 17 (5,4%) ήταν NDM-1 και 4 (1,3%) ήταν OXA-48. Πέντε στελέχη έφεραν περισσότερα από ένα γονίδια αντοχής (3 στελέχη είχαν KPC και VIM, 1 KPC και NDM-1 και 1 VIM και NDM-1). Στη συνέχεια, μελετήσαμε την τάση της αντοχής της κολιμυκίνης στο νοσοκομείο μας κατά τη χρονική περίοδο 2002-2016 εφαρμόζοντας την στατιστική ανάλυση γραμμικής παλινδρόμησης (linear regression analysis). Βρήκαμε ότι η αντοχή στην κολιμυκίνη παρουσίασε στατιστικώς σημαντική αυξητική τάση στον χρόνο, από 0% το 2002 σε 26,9% το 2016 [R2 = 0,5, p< 0,01; point estimate of coefficient, 2,97, 95% confidence interval (CI) 1,20–4,75; standard error of the slope coefficient, 0,82]. Επιπλέον, παρατηρήθηκε αυξητική τάση στον χρόνο στην χρήση της κολιμυκίνης, από 0,2 DDDs/100 ασθενο-ημέρες το πρώτο τρίμηνο του 2002 σε 7,10 DDDs/100 ασθενο-ημέρες το δεύτερο τρίμηνο του 2016 (R2 = 0,54, p< 0,01; point estimate of coefficient, 0,66, 95% CI 0,49–0,82; standard error of the slope coefficient, 0,08). Τέλος, για να διερευνήσουμε την πιθανή συσχέτιση μεταξύ της αντοχής στην κολιμυκίνη και χρήσης του αντιβιοτικού στο νοσοκομείο μας εφαρμόσαμε την στατιστική μέθοδος ανάλυσης χρονοσειρών (time series analysis). Η συνολική επίπτωση της ανθεκτικής στην κολιμυκίνη K. pneumoniae υπολογίστηκε ότι ήταν 0,37 στελέχη ανά 10.000 ασθενο-ημέρες και η μέση χρήση κολιμυκίνης ανά τρίμηνο ήταν 5,14 DDDs/100 ασθενο-ημέρες. Αφού δημιουργήσαμε τις επιμέρους χρονοσειρές της αντοχής και της χρήσης της κολιμυκίνης χρησιμοποιώντας τη μέθοδο των Box και Jenkins, στη συνέχεια κατασκευάσαμε το μοντέλο γραμμικής συνάρτησης μεταφοράς (linear transfer function model) το οποίο μας έδωσε τη δυνατότητα να ποσοτικοποιήσουμε τη δυναμική συσχέτιση μεταξύ χρήσης κολιμυκίνης και αντοχής στο φάρμακο. Το μοντέλο ανέδειξε την ύπαρξη αυτής της δυναμικής συσχέτισης και συγκεκριμένα, ότι η αύξηση της χρήσης κολιμυκίνης κατά 1 DDD/100 ασθενο-ημέρες οδηγεί σε +0.05 αύξηση της επίπτωσης αντοχής στην κολιμυκίνη. Μάλιστα, η επίδραση της κολιμυκίνης στην αύξηση της αντοχής εμφανίζεται μετά από διάστημα 3 μηνών. Σύμφωνα με το μοντέλο, η χρήση κολιμυκίνης και η προηγούμενη αντοχή στην κολιμυκίνη μπορούν να εξηγήσουν το 69% της αντοχής στην κολιμυκίνη. Άλλοι παράγοντες συμβάλλουν στην ανάπτυξη του υπόλοιπου 31% της αντοχής. Συνοψίζοντας, τα ευρήματά μας μπορούν και πρέπει να αποτελέσουν το σημείο εκκίνησης για την εφαρμογή αυστηρών μέτρων με σκοπό την ελάττωση της αντοχής στην κολιμυκίνη στο νοσοκομείο μας.

scholarly journals Propuestas para la mejora continua del área de producción de una empresa productora de carne de cerdo, mediante herramientas de manufactura esbelta

2019 ◽  
pp. 1-14
Author(s):  
Marco Antonio Conant-Pablos ◽  
René Daniel Fornés-Rivera ◽  
Adolfo Cano-Carrasco ◽  
Adrián Sánchez-Osuna
Keyword(s):  
Lean Manufacturing ◽  
Productive Capacity ◽  
Pork Production ◽  
Manufacturing Cell ◽  
Value Stream ◽  
Future Situation ◽  
Production Area ◽  
Production Company ◽  
Value Stream Map ◽  
Efficiency Indicators

The present project took place in a pork production company, which wants to reduce the waste of the products of the slicing area, specifically in the products Belly Slice, Kataroso Slice 120 gr and Belly Slice (3cm), aiming to identify activities that do not add value, through lean manufacturing tools, to propose improvement actions in the slicing process in the production area. The procedure used was to describe the activities of the process, generate specifications table of products, determine cycle time and productive capacity, determine sample size, prepare Value Stream Map (VSM) of the current process, identify activities that generate waste, perform VSM of the future situation and, finally, generate proposals for improvement. As a result, was obtained a program to monitor production, adapt the production line as a manufacturing cell and create a format for preventive maintenance of machinery and equipment; as well as the information that will lay the foundations for the products under study. With these actions, the intention is to contribute to the continuous improvement of performance, productivity and efficiency indicators.

Paleoceanography of the Santa Barbara Basin During the Last 8000 Years

1978 ◽  
Vol 10 (3) ◽  
pp. 366-384 ◽  
Author(s):  
Nicklas G. Pisias
Keyword(s):  
Time Series ◽  
North Pacific ◽  
California Current ◽  
Sea Surface ◽  
Function Technique ◽  
Sea Surface Temperatures ◽  
Santa Barbara ◽  
Santa Barbara Basin ◽  
Varved Sediments ◽  
Surface Temperatures

The varved sediments of the Santa Barbara Basin off southern California, offer a unique opportunity to study the changes in oceanographic conditions of this nearshore area during the last 8000 yr. Quantitative analysis of Radiolaria found in recent surface sediment samples from the eastern North Pacific allows the identification of four “assemblages” which can be related to the physical oceanography of the California Current. Two assemblages are associated with the southerly flowing California Current, one with the main stream of the current (California Current Assemblage) and the other with the offshore flow along northern California (Central Assemblage). The two other assemblages are associated with the subtropical region of the eastern North Pacific (Subtropical Assemblage) and one found mostly off the coast of Baja California (Baja Assemblage). Analysis of the Radiolaria found in the varved sediments of a core from the Santa Barbara Basin give an 8000-yr continuous record of these four assemblages. The California and Baja Assemblages show only minor fluctuations in their importance in the sediments of the Santa Barbara Basin. The California Assemblage, however, shows a steady increase during this time period. Prior to 5400 yr B.P. the Radiolaria were predominately subtropical in character, whereas after 5400 yr B.P. the Central Assemblage becomes more important. Since 5400 yr B.P. most of the changes in the radiolarian fauna consist of fluctuations in the importance of these two assemblages. Past sea-surface temperatures for the month of February were calculated using the transfer function technique of J. Imbrie and N. G. Kipp (1971, In “The Late Cenozore Glacial Ages” L. K. Turekian, Ed.), (Chap. 5, Yale Univ. Press, New Haven, Conn.). The time series of paleotemperature estimates show major changes in the average February temperature of Santa Barbara Basin waters. The range of estimated temperatures (12°C) exceeds that of the historical observations of February temperatures in the Santa Barbara Basin but does not exceed the observed range for the California Current region. The intervals from 800 to 1800 yr B.P. 3600 to 3800 yr B.P. and 5400 to the end of the record appear to have been generally warmer than today. Comparison of the Holocene record of alpine glacial advances with the radiolarian assemblage and paleotemperature time series shows that the initiations of advances was coincident with a decrease in sea-surface temperatures and an increase in the importance of the Central Assemblage in the Santa Barbara Basin. The terminations of these advances were not marked by any consistent characteristic in the Santa Barbara Basin time series.

scholarly journals Implementation of the SMED method in a production enterprise

2019 ◽  
Vol 2 (1) ◽  
pp. 224-233
Author(s):  
Marzena Kuczyńska-Chałada
Keyword(s):  
Lean Manufacturing ◽  
Global Economy ◽  
Business Management ◽  
Customer Requirements ◽  
Management Techniques ◽  
Quality Of Products ◽  
Production Company ◽  
Efficiency And Productivity ◽  
Tools And Methods

Abstract The increase in competitiveness between production enterprises results from the contemporary conditions of the global economy. Technical progress, globalization and constantly increasing customer requirements contribute to the development of organizational and business management techniques. The improvement of production is currently accompanied by modern tools and methods of Lean Manufacturing concepts such as: SMED, 5S, Kaiznen, Kanban, Poka-Yoke etc. The SMED method plays an important role in improving production processes. It also affects the reduction of losses and wastage, increase of value for stakeholders (especially for customers), as well as better motivation for employees. Thanks to the SMED method, the production company is able to achieve greater efficiency and productivity, as well as the high quality of products and services provided.

The LDE-Type Flare Occurrence (1969-1993)

1994 ◽  
Vol 144 ◽  
pp. 279-282
Author(s):  
A. Antalová
Keyword(s):  
Time Series ◽  
Fourier Analysis ◽  
Sunspot Cycle ◽  
List Type ◽  
Type Number ◽  
Solar Cycles ◽  
Type Iv ◽  
Long Duration ◽  
Cycle Maximum ◽  
Flare Index

AbstractThe occurrence of LDE-type flares in the last three cycles has been investigated. The Fourier analysis spectrum was calculated for the time series of the LDE-type flare occurrence during the 20-th, the 21-st and the rising part of the 22-nd cycle. LDE-type flares (Long Duration Events in SXR) are associated with the interplanetary protons (SEP and STIP as well), energized coronal archs and radio type IV emission. Generally, in all the cycles considered, LDE-type flares mainly originated during a 6-year interval of the respective cycle (2 years before and 4 years after the sunspot cycle maximum). The following significant periodicities were found:• in the 20-th cycle: 1.4, 2.1, 2.9, 4.0, 10.7 and 54.2 of month,• in the 21-st cycle: 1.2, 1.6, 2.8, 4.9, 7.8 and 44.5 of month,• in the 22-nd cycle, till March 1992: 1.4, 1.8, 2.4, 7.2, 8.7, 11.8 and 29.1 of month,• in all interval (1969-1992):a)the longer periodicities: 232.1, 121.1 (the dominant at 10.1 of year), 80.7, 61.9 and 25.6 of month,b)the shorter periodicities: 4.7, 5.0, 6.8, 7.9, 9.1, 15.8 and 20.4 of month.Fourier analysis of the LDE-type flare index (FI) yields significant peaks at 2.3 - 2.9 months and 4.2 - 4.9 months. These short periodicities correspond remarkably in the all three last solar cycles. The larger periodicities are different in respective cycles.

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