The aim of this paper is to test Six Sigma concept developed to optimize the manufacturing process for a company with about 200 employees. This test includes process monitoring, using statistical process control charts, and analyzing collected data for two different periods, before and after DMAIC methodology application. Dominant defect and its causes had been identified and it was found out that the process was not under control. Implementing improvement measures, dominant defect was eliminated but this didn’t enable to put the process under control. As a conclusion, the test indicated that the model is effective but it takes more iterations to achieve the desired state.

Istraživanjem Lukine pecine (Srednja stijena, Ravan planina) nađeni su ostaci pleistocenske faune spiljskog medvjeda Ursus spelaeus Rosenmuller & Heinroth, 1794. U radu donosimo prvi prikaz morfometrijskih proporcija ove vrste sa spomenutog lokaliteta. Analizom su obuhvaceni i novi nalazi iz spilje Megara (Bjelasnica). Dobivene morfometrijske proporcije se u potpunosti uklapaju u opci varijacijski raspon populacija pleistocenske faune spiljskog medvjeda u Bosni i Hercegovini, te su u granicama opceg varijacijskog raspona.

Gauge block calibration is one of the oldest high precision calibrations made in dimensional metrology. Gauge block comparison schemes are designed with a number of characteristics. The unknown length of a block is determined by measuring the difference between it and a reference block of the same nominal size and then calculating the unknown length. The sources of variation in measurements are numerous. Source of serious problems, which is not random, is the drift in the instrument readings. The instrumental drift can be obtained from any comparison scheme with more measurements than the number of unknown lengths plus one for the drift, since the drift rate can be includes a parameter in the model fit. This effect cannot be minimized by additional measurement because it is not generally pseudo-random, but a nearly monotonic shift in the readings. In this paper some techniques for drift eliminating of instrument are discussed.

During the investigation of the Lukina pecina cave (Srednja stijena, Ravan mountain) the bone remains of the cave bear ( Ursus spelaeus Rosenmuller & Heinroth, 1794) were found. We demonstrate for the first time the morphometric proportions of the cave bear from this locality. Our reasearch also included the new findings from the Megara cave (Bjelasnica). Analyzed morphometric proportions completely fell within the variation range of the Pleistocene cave bear population in Bosnia and Herzegovina, and the general variation range. Key words: Ursus spelaeus, Lukina pecina Cave, Megara, mandible, postcranial skeleton

Gauge block calibration is one of the oldest high precision calibrations made in dimensional metrology. Measurement Assurance Method determine calibration or measurement uncertainty based on systematic observations of achieved results. All length measurement processes are comparative operation, directly or indirectly. A comparator is device for measuring difference. The unknown length of a block is determined by measuring the difference between it and a reference block of the same nominal size and then calculating the unknown length. Measurement process is continually affected by perturbations from variety of sources. The uncertainty in the result of measurement generally consists of several components which may be grouped in two categories according to the way in which their numerical values are estimated: A-those which are evaluated by statistical methods and B-those which are evaluated by other means.

Gauge block calibration is one of the oldest high precision calibrations made in dimensional metrology. Measurement Assurance Method determine calibration or measurement uncertainty based on systematic observations of achieved results. All length measurement processes are comparative operation, directly or indirectly. A comparator is device for measuring difference. The unknown length of a block is determined by measuring the difference between it and a reference block of the same nominal size and then calculating the unknown length. Measurement process is continually affected by perturbations from variety of sources. The uncertainty in the result of measurement generally consists of several components which may be grouped in two categories according to the way in which their numerical values are estimated: A-those which are evaluated by statistical methods and B-those which are evaluated by other means. 1. INTRODUCTION A gauge block is a length standard having flat and parallel opposing surfaces. The length of the gauge block is defined at standard reference conditions: temperature 0°C, barometric pressure 101,325 Pa and CO 2 content of air 0,003%. In length measuring by mechanical comparison the length of the test gauge is compared to that of standard gauge and the measured difference in their lengths determines the length of the test gauge. Factors influencing the measurement are: the length calibration of the standard, factors inherent in the comparator equipment used to measure the length difference such as scale linearity and reading capability, gauge geometry with respect to its effect on probing the length difference, the temperature of the environment as it influences the gauge temperatures and etc [1,2].

In this experiment the influence of stocking density on the body conformation of broiler carcasses was investigated. One hundred and twenty broiler chickens were divided into three groups; each group comprised 40 chickens. At the end of the first week of the fattening period 20 chickens in each group were marked by random sampling. The first testing group (P1) represented the one with a lower stocking density (12 chickens per square meter); the second one (P2) with a higher stocking density (18 chickens per square meter), while the control group (K) was set in accordance with the technological recommendations (15 chickens per square meter). Breast circumference, drumstick circumference, keel length (crista sterni), breast depth and breast angle were monitored and measured on a weekly basis. Body conformation measures were determined on the carcasses in a horizontal position with their backs placed on the table. The appropriate instruments such as millimetre tape, caliper and ZP-3 protractor were used. In addition, a weekly live weight and feed consumption were measured. Production results (live weight, gain, feed-to-gain ratio and European Production Index (EPI) were calculated. Carcass grades were calculated based on the mass ratio of the cooled carcass and the live body weight before slaughtering. The research findings have confirmed that overcrowding in production facilities is always risky in regard to the expected production results. In contrast, by fully conforming to the production technology requirements, it is possible to achieve better production results.