Publisher: Universidade do Estado do Rio de Janeiro   (Total: 43 journals)   [Sort by number of followers]

Showing 1 - 43 of 43 Journals sorted alphabetically
Abusões     Open Access   (Followers: 1)
Ballot     Open Access  
Caderno Seminal     Open Access  
Cadernos de Estudos Sociais e Políticos     Open Access   (Followers: 2)
Cadernos do Desenvolvimento Fluminense     Open Access  
Cadernos do IME : Série Estatística     Open Access  
Cadernos do IME : Série Informática     Open Access  
Cadernos do IME : Série Matemática     Open Access  
Childhood & Philosophy     Open Access   (Followers: 9)
DEMETRA : Alimentação, Nutrição & Saúde     Open Access  
e-Mosaicos : Revista Multidisciplinar de Ensino, Pesquisa, Extensão e Cultura do Instituto de Aplicação Fernando Rodrigues da Silveira     Open Access  
Ekstasis : Revista de Hermenêutica e Fenomenologia     Open Access   (Followers: 1)
Em Pauta : Teoria Social e Realidade Contemporânea     Open Access   (Followers: 1)
Espaço e Cultura     Open Access  
Estudos e Pesquisas em Psicologia     Open Access  
Geo UERJ     Open Access  
História, Natureza e Espaço - Revista Eletrônica do Grupo de Pesquisa NIESBF     Open Access  
Intellèctus     Open Access  
J. of Sedimentary Environments     Open Access  
Jornal Brasileiro de TeleSSaúde     Open Access  
Logos : Comunicação e Universidade     Open Access  
Matraga - Revista do Programa de Pós-Graduação em Letras da UERJ     Open Access  
Palimpsesto : Revista da Pós-Graduação em Letras da UERJ     Open Access  
Pensares em Revista     Open Access  
Periferia     Open Access  
Physis : Revista de Saúde Coletiva     Open Access  
Polêm!ca     Open Access  
Psicologia e Saber Social     Open Access   (Followers: 1)
Revista da Faculdade de Direito da UERJ     Open Access   (Followers: 1)
Revista de Contabilidade do Mestrado em Ciências Contábeis da UERJ     Open Access  
Revista de Finanças Públicas, Tributação e Desenvolvimento     Open Access  
Revista Direito e Práxis     Open Access   (Followers: 1)
Revista Eletrônica de Direito Processual     Open Access  
Revista Enfermagem UERJ     Open Access   (SJR: 0.248, CiteScore: 0)
Revista Hospital Universitário Pedro Ernesto     Open Access  
Revista Maracanan     Open Access  
Revista Neiba, Cadernos Argentina Brasil     Open Access  
Revista Quaestio Iuris     Open Access  
Revista Tamoios     Open Access  
Revista Teias     Open Access  
Soletras Revista     Open Access  
Sustinere : Revista de Saúde e Educação     Open Access  
Textos Escolhidos de Cultura e Arte Populares     Open Access  
Similar Journals
Journal Cover
DEMETRA : Alimentação, Nutrição & Saúde
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2238-913X
Published by Universidade do Estado do Rio de Janeiro Homepage  [43 journals]
  • Editorial to Volume 37(2)

    • Authors: Jaco Visagie
      PubDate: 2021-12-21
      DOI: 10.5784/37-2-709
      Issue No: Vol. 37, No. 2 (2021)
       
  • Content and Access Provision in a Discrete Competition Model

    • Authors: Petrus Potgieter, Bronwyn Howell
      Pages: 54–7 - 54–7
      Abstract: The non-rival, non-excludable and infinitely expansible characteristics of digital goods with marginal cost of zero strongly favours the use of bundling strategies. Theoretical tractability requires most models in the current literature to make highly stylized assumptions, rarely observed or anticipated in the real-life situations, motivating inquiry. This paper considers a competition model in which: * the firms, consumers and differentiated products are finite in number; * prices are discrete and not continuous; * consumers may purchase multiple items in a single product category where the degree of complementarity or substitutability of the product categories can also vary across consumers; and * where consumer-specific cost savings are obtained when purchasing multiple items from the same firm. Approximate solutions are obtained through numerical simulation. Firms act in concert to maximise the total firm revenue. Our main finding is that the interplay between maximal firm revenue, consumer surplus and prices is very complex and that high firm revenue and high consumer surplus are not antithetic. It suggests also that consumer surplus and market concentration are not necessarily related. Many market outcomes that are observed may be due to chance rather than design as diverse outcomes can accompany situations that are, to the firms, difficult to distinguish.
      PubDate: 2021-12-21
      DOI: 10.5784/37-2-704
      Issue No: Vol. 37, No. 2 (2021)
       
  • Energy Analysis via Value Stream Mapping

    • Authors: Keshav Ramsunder, Oludolapo Olanrewaju
      Pages: 77–9 - 77–9
      Abstract: Over the past few decades, Lean Manufacturing (LM) has been the pinnacle of strategies applied for cost and waste reduction. However as the search for competitive advantage and production growth continues, there is a growing consciousness towards environmental preservation. With this consideration in mind this research investigates and applies Value Stream Mapping (VSM) techniques to aid in reducing environmental impacts of manufacturing companies. The research is based on empirical observation within the Chassis weld plant of Company X. The observation focuses on the weld operations and utilizes the cross member line of Auxiliary Cross as a point of study. Using various measuring instruments to capture the emissions emitted by the weld and service equipment, data is collected. The data is thereafter visualised via an Environmental Value Stream Map (EVSM) using a 7-step method. It was found that the total lead-time to build an Auxiliary Cross equates to 16.70 minutes and during this process  is emitted. It was additionally found that the UPR x LWR stage of the process indicated both the highest cycle time and carbon emissions emitted and provides a starting point for investigation on emission reduction activity. The EVSM aids in the development of a method that allows quick and comprehensive analysis of energy and material flows. The results of this research are important to practitioners and academics as it provides an extension and further capability of Lean Manufacturing tools. Additionally, the EVSM provides a gateway into realising environmental benefits and sustainable manufacturing through Lean Manufacturing.
      PubDate: 2021-12-21
      DOI: 10.5784/37-2-688
      Issue No: Vol. 37, No. 2 (2021)
       
 
JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
 


Your IP address: 34.231.247.88
 
Home (Search)
API
About JournalTOCs
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-