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Suche nach „[2016]“ hat 256 Publikationen gefunden
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    DigitalS: TC Grafenau

    Zeitschriftenartikel

    Nari Arunraj, Diane Ahrens, Michael Fernandes

    Application of SARIMAX model to forecast daily sales in retail industry

    International Journal of Operations Research and Information Systems (IJORIS), vol. 7, no. 2, pp. 1-20

    2016

    DOI: 10.4018/IJORIS.2016040101

    Abstract anzeigen

    Abstract During retail stage of food supply chain (FSC), food waste and stock-outs occur mainly due to inaccurate sales forecasting which leads to inappropriate ordering of products. The daily demand for a fresh food product is affected by external factors, such as seasonality, price reductions and holidays. In order to overcome this complexity and inaccuracy, the sales forecasting should try to consider all the possible demand influencing factors. The objective of this study is to develop a Seasonal Autoregressive Integrated Moving Average with external variables (SARIMAX) model which tries to account all the effects due to the demand influencing factors, to forecast the daily sales of perishable foods in a retail store. With respect to performance measures, it is found that the proposed SARIMAX model improves the traditional Seasonal Autoregressive Integrated Moving Average (SARIMA) model. Article Preview 1. Introduction Discount retail stores have been a noticeable feature of German retail market since the 1980s. In particular, the growth in number of discount retail stores have significantly increased after reunification of Germany. Recently, there is a growing trend of increasing varieties of fruits and vegetables with year-around availability across all the German discount retail outlets rather than just in their traditional growing season. In order to attract customers and remain competitive in the market, the fruits and vegetables are exported from foreign countries and stocked for longer periods. Particularly, increase in number of retail stores, availability of varieties of fruits and vegetables (in stock) with short shelf-lives, frequent price variations, and different storage conditions increase the complexity and results in huge amount of food waste. In Germany, the retail sector produces the food waste of around 0.5 million tons per year (Kranert et al., 2012). Although the retail sector contributes only 5% of the total food waste in food supply chain, mostly they are avoidable food waste (wasting food which is fit for consumption). The quantity of food waste that occurs in the home (61%) is partially due to the management decisions in the retail sector (e.g. frequent promotions) that stimulate the consumer’s eagerness to purchase, and distract them to equate their demand with the purchase (Arunraj et al., 2014; Gooch et al., 2010). Hence, the proper decision making in the retail sector can help the suppliers and consumers to avoid the food waste. The role of sales forecasting in reducing the food waste in retail stores is a significant topic of discussion in the recent food waste related studies (Mena et al., 2011; Mena et al., 2014). According to Mena et al. (2011) and Stenmarck et al. (2011), the improvement of forecast accuracy is one of the essential remedial measures to reduce the food waste in the retail sector of food supply chain.

    DigitalF: Angewandte Wirtschaftswissenschaften

    Zeitschriftenartikel

    Nari Arunraj, Diane Ahrens

    Estimation of Non-Catastrophic Weather Impacts for Retail Industry

    International Journal of Retail & Distribution Management, vol. 44, no. 7, pp. 731-753

    2016

    Abstract anzeigen

    Purpose Weather is often referred as an uncontrollable factor, which influences customer’s buying decisions and causes the demand to move in any direction. Such a risk usually leads to loss to industries. However, only few research studies about weather and retail shopping are available in literature. This study aims at developing a model and to analyse the relationship between weather and retail shopping behavior (i.e., store traffic and sales). Design/methodology/approach. The data set for this research study is obtained from two food retail stores and a fashion retail store located in Lower Bavaria, Germany. All these three retail stores are in same geographical location. The weather data set was provided by a German weather service agency and is from a weather station nearer to the retail stores under study. The analysis for the study was drawn using multiple linear regression with autoregressive elements (MLR-AR). The estimated coefficients of weather variables using MLR-AR model represent corresponding weather impacts on the store traffic and the sales. Findings The snowfall has a significant effect on the store traffic and the sales in both food and fashion retail stores. In food retail store, the risk due to snowfall varies depending on the location of stores. There are also significant lagging effects of snowfall in the fashion retail store. However, the rainfall has a significant effect only on the store traffic in the food retail stores. In addition to these effects, the sales in the fashion retail store are highly affected by the temperature deviation. Research limitations/implications Limitations in availability of data for the weather variables and other demand influencing factors (e.g. promotion, tourism, online shopping, demography of customers etc.) may reduce efficiency of the proposed MLR-AR model. In spite of these limitations, this study can be able to quantify the effects of weather variables on the store traffic and the sales Originality/value. This study contributes to the field of retail distribution by providing significant evidence of relationship between weather and retail business. Unlike previous studies, the proposed model tries to consider autocorrelation property, main and interaction effects between weather variables, temperature deviation and lagging effects of snowfall on the store traffic or the sales. The estimated weather impacts from this model can act as a reliable tool for retailers to explain the importance of different non-catastrophic weather events.

    F: Elektrotechnik und MedientechnikI: Institut ProtectITS: TC Teisnach Sensorik

    Vortrag

    Peter Semmelbauer, Karl Leidl, Martin Aman, Laurin Dörr, Andreas Grzemba

    Schwachstellen, Angriffsszenarien und Schutzmaßnahmen bei industriellen Protokollen am Beispiel Profinet IO

    Automation 2016 - Secure & reliable in the digital world, Baden-Baden

    2016

    F: Elektrotechnik und Medientechnik

    Vortrag

    F. Kendl, H. Heckelmüller, Gerhard Krump

    Korrelation des Schallmesswagen-Pegels mit akustischer Schienenrauheit und Gleisabklingraten

    DAGA 2016: Fortschritte der Akustik (42. Deutsche Jahrestagung für Akustik), Aachen

    2016

    F: Elektrotechnik und Medientechnik

    Vortrag

    H. Heckelmüller, F. Kendl, Gerhard Krump

    Entwicklung eines TDR Einzahlwertes zur Charaktierisierung der dynamischen Steifigkeit des Oberbaus

    DAGA 2016: Fortschritte der Akustik (42. Deutsche Jahrestagung für Akustik), Aachen

    2016

    F: Elektrotechnik und Medientechnik

    Vortrag

    M. Djukic, Gerhard Krump

    Initiative Entwicklung von synthetischen Antriebsgeräuschen für Innenräume von Elektrofahrzeugen

    DAGA 2016: Fortschritte der Akustik (42. Deutsche Jahrestagung für Akustik), Aachen

    2016

    F: Elektrotechnik und Medientechnik

    Vortrag

    Gerhard Krump, M. Spranger

    Prävention lärmbedingter Hörschäden bei Kindern und Jugendlichen

    DAGA 2016: Fortschritte der Akustik (42. Deutsche Jahrestagung für Akustik), Aachen

    2016

    F: Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen

    Vortrag

    Rolf Rascher

    Innovationsentwicklung mit der Technischen Hochschule Deggendorf

    Innovationsworkshop "Innovation in der Photonik" im Rahmen der 13. Optatec 2016 - Internationale Fachmesse für optische Technologien, Komponenten und Systeme, Frankfurt am Main

    2016

    F: Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen

    Vortrag

    Engelbert Hofbauer

    Vignettierung als neues physikalisches Messprinzip - oder: wie mache ich aus einem Problem eine Lösung?

    Innovationsworkshop "Innovation in der Photonik" im Rahmen der 13. Optatec 2016 - Internationale Fachmesse für optische Technologien, Komponenten und Systeme, Frankfurt am Main

    2016

    MobilNachhaltigS: TC Freyung

    Vortrag

    Raphaela Pagany, Roland Zink, Anna Marquardt

    Charging stations location model based on spatio-temporal electromobility use patterns

    Poster-Präsentation

    European Geosciences Union (EGU) General Assembly 2016, Wien, Österreich

    2016

    NachhaltigF: Elektrotechnik und Medientechnik

    Vortrag

    Florian Karl, Roland Zink

    Spatio-temporal modelling of electrical supply systems to optimize the site planning process – Case study: Power to Mobility Technology

    Poster-Präsentation

    European Geosciences Union (EGU) General Assembly 2016, Wien, Österreich

    2016

    F: Elektrotechnik und Medientechnik

    Vortrag

    Andreas Grzemba

    Sicherheit in der technischen Infrastruktur von Rechenzentren

    future thinking 2016 - Der RZ-Kongress, Darmstadt

    2016

    GesundF: Angewandte Gesundheitswissenschaften

    Zeitschriftenartikel

    Stephan Gronwald

    Über die Bedürfnisse zu Arbeitsschutz und Unternehmenskultur

    Perspektiven - Zeitschrift für Fach- und Führungskräfte (Hg: Verband Die Führungskräfte), no. 1/2, pp. 8-9

    2016

    GesundF: Angewandte GesundheitswissenschaftenI: Institut Betriebliches Gesundheitsmanagement u. Arbeitssicherheit

    G. Dostal, Horst Kunhardt, Stephan Gronwald, U. Lang, G. Wenninger, M. Fuckerer

    Gesundheit im Betrieb

    Handlungsfelder - Lösungen - Implementierung

    Norderstedt: Books on Demand (XundlandBasics), vol. 2

    2016

    ISBN: 978-3739230085

    F: Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen

    Vortrag

    Rolf Rascher, Christine Wünsche, Christian Schopf

    Aspects in laser polishing of precision optical components

    LaP 2016 - 2nd Conference on Laser Polishing, Aachen

    2016

    NachhaltigS: TC Freyung

    Zeitschriftenartikel

    Luis Ramirez Camargo, J. Franco, N. Sarmiento Babieri, S. Belmonte, K. Escalante, Raphaela Pagany, Wolfgang Dorner

    Technical, Economical and Social Assessment of Photovoltaics in the Frame of the Net-Metering Law for the Province of Salta, Argentina

    Energies, vol. 9, no. 3 (Article number 133)

    2016

    DOI: 10.3390/en9030133

    Abstract anzeigen

    Central and Northern Argentinean regions possess a high potential for the generation of solar energy. The realization of this potential is an alternative to alleviate the strong dependence on imports of fossil energy and to reduce the CO2 emissions of the country. However, the adoption of photovoltaics (PV) is still in an incipient state. It is undermined by a context of heavily subsidized electricity prices, high equipment and installation costs and a lack of information, training and experience in handling PV technology. This paper presents a techno-economical assessment of the application of the recently enacted net-metering law for promoting renewable energies (RE) in the Province of Salta (Northwest Argentina) for the case of PV. The assessment shows under which conditions and for which types of consumers it is profitable to adopt PV in the context of the law. This analysis is supported by a participatory planning approach as a study of stakeholders’ attitudes towards RE, intentions to adopt PV and their knowledge about the law. The results of this study and the economical analysis serve to provide recommendations aimed at increasing the level of PV adoption in the province.