RFID Data Loggers in Fish Supply Chain Traceability

Radio frequency identification (RFID) is an innovative and well-recognized technology that supports all kinds of traceability systems in many areas. It becomes very important in the food industry where the electronic systems are used to capture the data in the supply chain. Additionally, RFID data loggers with sensors are available to perform a cold chain optimization for perishable foods. This paper presents the temperature monitoring solution at the box level in the fish supply chain as part of the traceability system implemented with RFID technology. RFID data loggers are placed inside the box to measure the temperature of the product and on the box for measuring ambient temperature. The results show that the system is very helpful during the phases of storage and transportation of fish to provide the quality control. The sensor data is available immediately at the delivery to be checked on the mobile RFID reader and afterwards stored in the traceability systems database to be presented on a web to stakeholders and private consumers

Chern-Simons Modified-RPA Eliashberg Theory of the nu=1/2+1/2 Quantum Hall Bilayer

The nu=1/2+1/2 quantum Hall bilayer has been previsously modeled using Chern-Simons-RPA-Eliashberg (CSRPAE) theory to describe pairing between the two layers. However, these approaches are troubled by a number of divergences and ambiguities. By using a "modified" RPA approximation to account for mass renormalization, we can work in a limit where the cyclotron frequency is taken to infinity, effectively projecting to a single Landau level. This, surprisingly, controls the important divergences and removes ambiguities found in prior attempts at CSRPAE. Examining BCS pairing of composite fermions we find that the angular momentum channel l=+1 dominates for all distances d between layers and at all frequency scales. Examining BCS pairing of composite fermion electrons in one layer with composite fermion holes in the opposite layer, we find the l=0 pairing channel dominates for all d and all frequencies. The strength of the pairing in these two different descriptions of the same phase of matter is found to be almost identical. This agrees well with our understanding that these are two different but dual descriptions of the same phase of matter.Comment: 6+21 page

Development of Cika cattle breed

Cika cattle is the only Slovenian autochthonous cattle breed. It originates from Bohinj where breeders bred their own »cow families« and by doing so they kept a relatively high milk yield of Bohinj cows. They did not buy cows outside of Bohinj, only the bulls were purchased by the cooperatives at the cattle breeding fairs. Cika cattle was a widely used breed until the sixties of previous century, primarily as a dairy breed. Political decision made in 1964 significantly reduced the population in the following years. Our research was focused on the study of historical sources which show the development of Cike cattle in the Republic of Slovenia. We have put special emphasis on zootechnical characterization, genealogy, livestock geography, morphology and milk production of Cika cattle

Estimating roadside roundwood with digital photogrammetry

Magistrsko delo je bilo zastavljeno na podlagi možnosti uporabe fotogrametrije za izračun volumna okroglega lesa. Podatki so bili pridobljeni iz terenskih posnetkov skladovnic, ki so bile označene s štirimi kontrolnimi točkami. Skupno je bilo posnetih 37 skladovnic, ki so se delile v tri razširjene debelinske razrede. Sortimente v skladovnicah smo predhodno ročno izmerili ter označili z zaporednimi številkami. Dolžina posameznega sortimenta je bila 8,25 m. Volumen smo izračunali po Newtonovem obrazcu. Zajete posnetke smo obdelali z računalniškimi programi Pix4D, CloudCompare, ArcMap in Microsoft Excel. S prvim programom smo naredili oblak točk iz zajetih posnetkov. S poznavanjem natančne razdalje med kontrolnimi točkami smo oblak točk raztegnili v metrični sistem. S preostalimi programi smo izračunali volumen oblaka točk, ki je predstavljal skladovnice. Ugotovili smo, da sta dejanski volumen lesa v skladovnici in volumen rastrskega modela skladavnice v odvisnosti, ki jo najbolje opiše potenčna funkcija. Ugotovili smo, da napovedan volumen od dejanskega odstopa od -2,5 m3 do 1,5 m3. Povprečna napaka našega modela znaša 5,7 % (RMSE).The master’s thesis explored photogrammetry as a potential method for calculation of roundwood volume. The data was acquired from field images of stacks which were marked with four control points. A total of 37 stacks divided into three diameter classes were recorded. Prior to recording, the logs in the stacks were manually measured and numbered. Log length was 8.25 m. Volume was calculated using Newton’s formula. The recorded images were processed with Pix4D, CloudCompare, ArcMap and Microsoft Excel software. Pix4D was used to create a point cloud from the acquired images. After measuring the exact distance between control points, we translated the point cloud into the metric system. The other software was used to calculate the volume of the point cloud representing stacks. We discovered that the correlation between the actual volume of wood in the stack and the volume of the raster model is best described with the power function. Forecast volume deviated from actual volume by -2,5 m3 to 1,5 m3. The average error rate of our model is 5.7% (RMSE)

Assessment of the impact of climate change on the development of sport tourism in the Triglav National Park

The Triglav National Park is the only National Park in Slovenia. Due to the above average statistics of\ud annual precipitation it is boasting with an exceptional wealth of water resources which are visible in a\ud great number of various bodies of water, that not only represent a vital source of drinking water, but\ud are also exploited in different economic purposes (e.g. tourism, energy industry, sports and recreation).\ud The development of the above mentioned industries, which are linked to the hydrological circle, is\ud also strongly linked with the future hydrological situation of the Triglav National Park. In recent\ud decades the climate and hydrological situation has been undergoing some changes, also due to human\ud impact. The impact of these changes vary by geographical location, but the North-western part of\ud Slovenia, where the Triglav National Park is located, is characterized by an increase of air temperature\ud and decrease of precipitation amount and snow depth cover. Sudden and extreme weather phenomena\ud causing avalanches, erosion, floods, drought and other natural catastrophes are or will be more\ud frequent. The following thesis present the impact of predicted climate changes on the development\ud potential of those sporting and recreational activities within the boundaries of the National Park which\ud are in any kind linked to the hydrological circle or all water forms (rain, snow, ice, water body). The\ud representation of each individual sports or recreational activity is graphical displayed through GIS\ud Tools. The core of the following thesis is a projection of selected influential climatological and\ud hydrological variables within the Triglav National Park for the year 2030 through the process of\ud extrapolation of the existing measurements and a subsequent evaluation of the impact of expected\ud climate change on the development opportunities for the discussed sports activities. Based on the\ud results of the analysis and given the expected guidelines of the climate changes propositions are given\ud for further strategic sports and tourism tendencies of the Triglav National Park

Impact of a Mediating Role of Repurchase Intentions on Customer Retention

Research in the area of packaged tour services, provided by the national and foreign tour operators has concentrated on mutual relationships among tourist-perceived service quality, satisfaction and repurchase intentions. However, little research in this domain has been done to explain the impact of repurchase intentions of experienced tourists on the relation between perceived quality of service and their satisfaction. This model was tested using substantial data set of experienced tourists with time span of three years. While previous literature has suggested that quality perceptions impose direct effect on tourist satisfaction, this study shows that such effect is more powerful when mediated by repurchase intentions of experienced tourists. The quality of packaged tour services mediated by repurchase intentions of the experienced tourist is expected to be paramount for the retention of the tourist in the long term. KEY WORDS: repurchase intentions, quality, packaged service, services chain, tour operator, retention, tourist satisfaction