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1.
Fuzzy logic based quality monitoring in short-circuit gas metal arc welding
Marjan Golob, Arpad Köveš, 2007, original scientific article

Abstract: Conventional methods, e.g. destructive and non-destructive testing methods, are expensive and time-consuming; therefore, possibilities of online and automated quality control of a welding process during welding as such are investigated. The paper deals with the possibilities of application of fuzzy logic to the analysis of weld quality, particularly assessment of the weld surface condition by means of measurable electric signals emitted during welding. A simple fuzzy inference system was realised which could relatively efficiently assess the weld quality on the basis of time variations of the welding voltage and short-circuit time in a certain time window.
Keywords: fuzzy systems, fuzzy logic, gas metal arc welding, GMAW, quality monitoring, statistical analysis, quality control, weld quality
Published: 31.05.2012; Views: 1070; Downloads: 74
URL Link to full text

2.
Uvajanje računalniško podprte proizvodnje
Uroš Trupej, 2013, undergraduate thesis

Abstract: V svoji diplomski nalogi sem se osredotočil na uvajanje računalniško podprte proizvodnje in kakšne prednosti prinaša. Računalniško podprta proizvodnja združuje moderno računalniško tehnologijo z naprednimi obdelovalnimi stroji in povezavo z informacijskim sistemom, kjer je človek še vedno vodilo napredka. Na teoretičnem primeru sem prikazal kakšne spremembe mora neko podjetje opravit in kakšne pogoje mora zadostiti, da lahko uvede računalniško podprto proizvodnjo.
Keywords: RIP - Računalniško integrirana proizvodnja, CIM - Computer integrated manufacturing, CAD - Computer Aided Design.CAM - Computer Aided Manufacturing, CAE - Computer Aided Engeneering, CAQ - Computer Aided Quality Assurance, CAPP - Computer Aideded Process Planning, CABS - Computer Aideded Business Sysytem, CAST - Computer Aideded Storagee and Transport, CNC - Computer Numerical Control, POS - Prilagodljivi obdelovalni stroji
Published: 16.10.2013; Views: 1223; Downloads: 160
.pdf Full text (2,14 MB)

3.
Povezanost kliničnih kazalcev uspešnosti zdravljenja astme pri odraslih z nukleotidnimi polimorfizmi
Anton Lopert, 2015, doctoral dissertation

Abstract: Naši rezultati nakazujejo na podlagi polimorfizov rs9910408 v genu TBX21 in rs37973 v genu GLCCI1 možnost identifikacije bolnikov, ki se bodo boljše ali slabše odzvali na zdravljenje z IGK, kar bi lahko bilo v prihodnosti klinično pomembno. Polimorfizem rs9910408 v genu TBX21 smo povezali tako s porastom FEV1, kot z zmanjšanjem bronhialne preodzivnosti (porastom PD20 za metaholin) in izboljšanjem kvalitete življenja, prikazane s spremembo rezultata vprašalnika AQLQ. Ta odziv je bil izraziteje prisoten pri nekadilcih in neatopikih. To je doslej edini opis takšne povezanosti pri odraslih bolnikih z astmo. S porastom FEV1 smo povezali tudi polimorfizem rs37973 v genu GLCCI1, pri katerem ugotavljamo velik vpliv kajenja in atopije na terapevtski odgovor.
Keywords: astma, odrasli, fenotip, FEV1, bronhialna preodzivnost /bronhialna hiperreaktivnost, polimorfizmi posameznih nukleotidov, GLCCI1, CRHR1, TBX21, ACT (Asthma Control Test), AQLQ (Asthma Quality of Life Questionnaire)
Published: 21.04.2015; Views: 1140; Downloads: 133
.pdf Full text (4,65 MB)

4.
Chemical and fruit skin colour markers for simple quality control of tomato fruits
Vesna Bukovac, Tatjana Unuk, 2015, original scientific article

Abstract: The orientation of this research was to evaluate the classic parameters regarding the external and internal quality of tomato fruits cv. ‘Brilliant‘ at different stages of maturity and to define the dynamics of their changes during the ripening in storage at 18 °C. Principal component analysis (PCA) and multivariate canonical discriminant analysis (DA) were used to classify tomato samples according to quality (internal and external) and nutritional value based on fruit mass, fruit skin colour, contents of soluble solids (SS), total titratable acids (TTA), ascorbic acid (AA), and total antioxidant potential (TAP). Several methods are usedfor determining AA content and TAP in plant samples. A simple routine method, direct redox titration with iodate solution and spectrophotometric determination of TAPSP, as described by Singleton and Rossi, also called total phenols, were used respectively. The results show that the stage of maturity (based on fruit skin colour) strongly determines the quality and nutritional value of the tomato fruit. Tomatoes harvested at table maturity (red colour, index a*/b* ≥ 0.85) have a significantly higher nutritional value (in terms of antioxidants – TAPSP and AA content) and overall quality than those harvested at an earlier maturity stage and then ripened in storage. This brings out the importance of short food supply chains and, from the viewpoint of overall fruit quality, it raises doubt about harvesting before reaching table maturity. On the other hand, it is necessary to be extremely attentive when determining optimal maturity, because when the plant becomes over-ripe or when stored, the nutritional value and overall quality decrease drastically. Besides the colour parameters, AA content is the most important chemical marker for a simple quality control. By using a simple and reliable analytical method for determining AA content, such as direct redox titratiation, the monitoring of tomato fruit quality could also be easily performed in situ.
Keywords: chemical markers, quality control, antioxidant, tomato, discriminant analysis
Published: 24.10.2017; Views: 443; Downloads: 66
.pdf Full text (489,58 KB)
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