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1.
Efficiency analysis with non parametric method: illustration of the Tunisian ports
Arbia Hlali, 2018, izvirni znanstveni članek

Opis: This paper applies a non-parametric method to provide level technical efficiency for 7 Tunisian ports during 18 years (1998-2015). These ports represent different data set. The use of the model of variable returns to scale (VRS) has led to interesting results. The results show that the most ports are characterized by low levels of technical efficiency, with the exception port of Rades. In addition, the result shows the variation of variable returns to scale and constant returns to scale of technical port’s efficiency. Furthermore, we concluded that the panel data improves the efficiency estimates.
Ključne besede: technical efficiency, Tunisian ports, non parametric analysis
Objavljeno: 25.04.2018; Ogledov: 5; Prenosov: 1
.pdf Celotno besedilo (382,56 KB)

2.
Influence of road transport infrastructure on agricultural sector development in Nigeria
Olusogo Ogunleye, Akinyemi Ajibola, Oluwafemi Enilolobo, Olufolakemi Shogunle, 2018, izvirni znanstveni članek

Opis: The study investigated the effects of road transport infrastructure on agricultural sector development in Nigeria from 1985 to 2014, using secondary annual time series data on agricultural development (proxy by gross domestic product in the Agric sector) road transport infrastructure (proxy by length of paved road per square kilometer of area) export and capital, all obtained from the Central Bank of Nigeria (CBN) [3], and National Bureau of Statistics (NBS) [16], statistical bulletins. The data were analyzed using Granger Causality test and Ordinary Least Square estimation techniques. The study concluded that a positive and statistically significant relationship exists between road transport infrastructures (LRT) also evidence was found of a unidirectional causality from agricultural sector development to transport infrastructure. The study, therefore, recommends that adequate and timely maintenance of existing roads should be carried out as well as enacting appropriate regulations that ensure proper implementation and completion of new road construction contracts in the country in order to boost agricultural sector development, reduce wastage of farm produce and increase the possibility of economic diversification.
Ključne besede: road transport, transport infrastructure, agricultural development
Objavljeno: 25.04.2018; Ogledov: 3; Prenosov: 0
.pdf Celotno besedilo (267,31 KB)

3.
Analysis of road traffic safety in Minna Niger State, Nigeria
Adebayo Owolabi Oyetubo, Oluwaseyi Joseph Afolabi, Muhammed Etudaiye Ohida, 2018, izvirni znanstveni članek

Opis: Road traffic accident is one of the major causes of death in Nigeria. Road accidents have taken away so many lives in Nigeria today that hardly does any single disease match its mortality prowess. People have died prematurely and properties worth several millions of Naira have been lost as a result of road traffic accident. This paper gives a full discussion on road traffic safety issues and the methodology used were through the collection of data using questionnaire and accident information from the Nigeria Police Force, FRSC etc. The primary information for this research was sourced through the use of structured questionnaire, personal observation and interviews of road users in the study area. Secondary data emanated from published and unpublished sources such as government records, internet, journals, books etc. The findings were presented in descriptive and inferential form using frequencies, percentages, tables, mean and chi-square analytical techniques. The findings from the study revealed among many others; that Male involved more in road accident compare to female counterpart in Minna Niger State. Private car had more accident compare to Taxi, The number of accident in each zone does not depend on the population of that zone, etc.
Ključne besede: accident, traffic, fatalities, safety, vehicle
Objavljeno: 25.04.2018; Ogledov: 3; Prenosov: 0
.pdf Celotno besedilo (692,91 KB)

4.
Use of ergonomic principles in manual order picking systems
Nina Labus, Brigita Gajšek, 2018, izvirni znanstveni članek

Opis: Successful companies are continually striving to streamline costs and optimize processes, enabling them to grow progress, develop and ensure competitiveness on the market. A large part of the costs arises in warehouses, where up to 55% of total costs are generated by order- picking, which makes it important and interesting in terms of research. The paper explores "picker to part" order- picking concept, which enables flexible work and is the optimal choice for most companies. The concept is associated with a high level of work- related injuries and work -related illnesses. Work requires physical efforts resulting from handling heavy goods, performing repetitive movements and using manipulative means. Hum an as the main actor of the concept affects the costs caused by picking and the quality of work done, which depends on technological support, physically and psychologically capable and motivated people. Due to the high costs of service, the focus on time planning and productivity increases. Contrary, the lack of attention is paid to the working conditions and the health status of the pickers. To overcome this gab, a review of scientific and professional literature on ergonomic principles in picking concept "picker to part" was carried out, followed by a quantitative survey of ergonomic properties in warehousing activities. Results revealed that more than 60% of the surveyed order-pickers associate problems with health with the characteristics of work, about 24% of them associate health problems with the use of a particular means of transport, and all agree that provided measures to reduce physical effort and greater support of technologies influence on increased speed of work and better health status of order-pickers.
Ključne besede: injuries, picker-to-part, ergonomics, picking, productivity, costs
Objavljeno: 25.04.2018; Ogledov: 9; Prenosov: 2
.pdf Celotno besedilo (344,50 KB)

5.
Assessing the recovery aftermaths of selected disasters in the Gulf of Mexico
Daniel Adrian Doss, David McElreath, Rebecca Goza, Raymond Tesiero, Balakrishna Gokaraju, Russ Henley, 2018, izvirni znanstveni članek

Opis: This research examined quantitatively in-port grain loading levels during the periods preceding and succeeding selected human-made and natural disasters among U.S. Gulf Coast ports. The array of selected disasters consisted of the 2010 British Petroleum oil spill, the 2011 Mississippi River flood, Hurricane Katrina, Hurricane Gustav, and Hurricane Isaac. The outcomes of the analyses showed that the examined in-port Gulf Coast grain loading activities have not fully recovered and achieved the level of normalcy that existed before the examined cataclysms.
Ključne besede: Hurricane Gustav, Hurricane Katrina, Hurricane Isaac, Mississippi River
Objavljeno: 25.04.2018; Ogledov: 4; Prenosov: 1
.pdf Celotno besedilo (249,17 KB)

6.
Prenova skladiščnih in informacijskih tehnologij v podjetju ahac d.o.o.
Kristian Glavica, 2017, diplomsko delo/naloga

Opis: Diplomsko delo obravnava problematiko vodenja zalog v skladiščnem sistemu in informacijske podpore opravilom v skladišču. Izpostavljen problem je ročno vodenje zalog v skladišču in zapadlost rokov uporabe uskladiščenega blaga. To je posledica papirnega načina dela v skladišču. Poleg tega pa v skladišču ni modernejše tehnologije. Da bi izpostavljen problem delno ali v celoti odpravili, smo se lotili preučitve prenove informacijske podpore v več korakih. Najprej smo opazovali delo v skladišču. To vključuje tok blaga od prevzema, skladiščenja, komisioniranja do odpreme. Na podlagi ugotovljenih napak in zamud smo se odločali za primerno rešitev. Nadalje smo iskali najboljšega ponudnika opreme in storitev za izvedbo prenove. Raziskovalno delo smo zaključili z izračunom stroškov investicije. To pomeni, da smo pridobivali podatke o cenah opreme in storitev pri ponudniku. Za izboljšanje obstoječih razmer smo predlagali vpeljavo nove programske in strojne opreme ter spremembo nekaterih lokacij blaga. Učinek prenove bo v zmanjšanju možnosti napak in v skoraj celotni odpravi problematike poteka roka uporabe blagu, kar sedaj pri določeni vrsti in količini blaga predstavlja dodatne visoke stroške.
Ključne besede: Proces, prenova, skladišče, informacijska tehnologija, logistika, rok uporabe
Objavljeno: 17.04.2018; Ogledov: 25; Prenosov: 9
.pdf Celotno besedilo (2,30 MB)

7.
Uvajanje lastnega voznega parka v podjetju silkem d.o.o.
Petra Cep, 2017, diplomsko delo/naloga

Opis: Diplomsko delo v teoretičnem delu opisuje značilnosti transporta. Opredeljen je pojem zunanjega izvajanja transporta, ki je tudi ena glavnih tematik diplomskega dela. Poudarek je na organizaciji transporta in stroških, ki nastajajo ob celotnem procesu, ter postopkih, ki so za izvedbo procesa potrebni. V empiričnem delu je izvedena analiza obstoječega stanja proizvodnega podjetja. Analizirali smo delovanje sistema, ter opredelili sistemske funkcije. Poglobili smo se v analizo stanja prevoznega dela podjetja ter za to smer predlagali izboljšave. Ocenili smo tudi investicijska vlaganja, ki so potrebna za izvedbo predlogov. Izvedena je tudi ocena rezultatov, do katerih bi prišli ob uvedenih predlogih.
Ključne besede: logistika, vozni park, stroški, zunanje izvajanje, transportna pot
Objavljeno: 23.02.2018; Ogledov: 105; Prenosov: 34
.pdf Celotno besedilo (1,46 MB)

8.
Nadgradnja mts in opreme na policijski postaji z rfid tehnologijo
Maja Šega, 2017, diplomsko delo/naloga

Opis: Policijska postaja s splošnim delovnim področjem ima širok spekter del in nalog, ki jih opravlja in za to na razpolago ogromno MTS in opreme: za vzdrževanje javnega reda in miru, za nadzor in urejanje prometa ter reševanje in odkrivanje kaznivih dejanj in prekrškov. Posledično je za delo z MTS in opremo potrebno veliko dela in časa, za kar je potrebo tudi večje število subjektov. Potreben je dober odnos do MTS in opreme, pravilno rokovanje in njena uporaba, stalen in dosleden nadzor nad opremo, servisiranje in vzdrževanje, pregledi, evidentiranje itd. Posledično vsemu temu prihaja še do ogromno birokracije. Da bi prispevali k lažjemu izpolnjevanju vseh navedenih zahtev in ciljev, ter pri tem še zmanjšali stroške, smo MTS in opremo, ki se nahaja in uporablja na policijski postaji s splošnim delovnim področjem, nadgradili z RFID tehnologijo, s čimer se bi lahko olajšalo delo uporabnikom, odgovornim za opremo, serviserjem in vzdrževalcem, službam, ki so zadolžene za nabavo MTS in opreme ter za vse ostale, ki so na kakšen drug način v povezavi z MTS in opremo.
Ključne besede: MTS, oprema, RFID, identifikacija, tehnologija, policija
Objavljeno: 19.02.2018; Ogledov: 90; Prenosov: 19
.pdf Celotno besedilo (2,16 MB)

9.
Container throughput forecasting using dynamic factor analysis and ARIMAX model
Marko Intihar, Tomaž Kramberger, Dejan Dragan, 2017, izvirni znanstveni članek

Opis: The paper examines the impact of integration of macroeconomic indicators on the accuracy of container throughput time series forecasting model. For this purpose, a Dynamic factor analysis and AutoRegressive Integrated Moving-Average model with eXogenous inputs (ARIMAX) are used. Both methodologies are integrated into a novel four-stage heuristic procedure. Firstly, dynamic factors are extracted from external macroeconomic indicators influencing the observed throughput. Secondly, the family of ARIMAX models of different orders is generated based on the derived factors. In the third stage, the diagnostic and goodness-of-fit testing is applied, which includes statistical criteria such as fit performance, information criteria, and parsimony. Finally, the best model is heuristically selected and tested on the real data of the Port of Koper. The results show that by applying macroeconomic indicators into the forecasting model, more accurate future throughput forecasts can be achieved. The model is also used to produce future forecasts for the next four years indicating a more oscillatory behaviour in (2018-2020). Hence, care must be taken concerning any bigger investment decisions initiated from the management side. It is believed that the proposed model might be a useful reinforcement of the existing forecasting module in the observed port.
Ključne besede: container throughput forecasting, ARIMAX model, dynamic factor analysis, exogenous macroeconomic indicators, time series analysis
Objavljeno: 12.12.2017; Ogledov: 59; Prenosov: 6
.pdf Celotno besedilo (1,33 MB)

10.
Vertical marketing systems, supply chains and the new indicators of retailing's significance
Zdenko Segetlija, Josip Mesarić, Davor Dujak, 2014, izvirni znanstveni članek

Opis: In modern vertical marketing systems (i.e., in grocery sector), the greatest power is demonstrated by retail chains, and producers depend thereupon. This paper analyzes vertical marketing systems and the role of retailing therein. Specially analyzed is the power of retail chains’ demand with regard to the entire supply chains they head, as well as the present-day new competition in retailing and modern business concepts related to the vertical marketing systems. Additionally, analyzed are also select indicators to examine the significance of retailing in an individual national economy. The purpose of this paper is to emphasize the new indicators of significance of retailing in economy with regard to the realized GDP, as a component of value chains. These indicators complement the usual retailing significance analyses from the point of view of its share in the number of employees and the number of companies. From the conducted analysis, one may conclude that the vertical marketing systems become increasingly important, and retailing assumes a new role in economy in that sense. Thus, new indicators of retailing significance might also be necessary.
Ključne besede: vertical marketing systems, retailing, retail chains, retail supply chain, significance of retailing
Objavljeno: 17.11.2017; Ogledov: 124; Prenosov: 1
.pdf Celotno besedilo (185,22 KB)

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