4653 research outputs found
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Decarbonised closed-loop supply chains resilience: examining the impact of COVID-19 toward risk mitigation by a fuzzy multi-layer decision-making framework
No full textToday's primary challenges in supply chains (SCs) include considerable greenhouse gas emissions, waste, and disruptions. Addressing these requires the examination of three interconnected SC paradigms, i.e. decarbonisation, resilience, and Closed-Loop SCs (CLSCs). This paper seeks to investigate and assess the criteria for decarbonised resilient CLSCs, as influenced by the global pandemic, specifically within the context of Iran's small and medium pharmaceutical enterprises, employing a mixed-method approach. Initially, a Systematic Literature Review was employed to identify a categorised list of decarbonised resilient CLSC criteria by determining the impact of COVID-19 on SCs. Afterwards, the list was indigenised via the fuzzy-Delphi method. Two popular Fuzzy Multi-Criteria Decision-Making methods, i.e. fuzzy Decision-Making Trial and Evaluation Laboratory and fuzzy Interpretive Structural Modelling-Matrix-based Multiplication Applied to a Classification (MICMAC), were then employed to investigate the finalised criteria. This paper has innovatively enhanced these methods by incorporating a multi-scenario analysis approach. The findings indicate that technological advancements, issues related to market and communication, and raw material markets significantly affect other criteria. Transportation and logistics are also crucial in reducing lead times, waste, and CO2 emissions. Two countermeasures are recommended for senior managers, i.e. (i) the identification and application of suitable basic and advanced technologies across each SC process and (ii) engaging in a coevolutionary process beginning with SMEs' cooperation and collaboration towards their co-creation. The importance of regulatory bodies was also emphasised in devising effective policies to improve the markets for raw materials and finished products.Operations Research & Management Scienc
The effect of green supply chain management practices on carbon-neutral supply chain performance: the mediating role of logistics eco-centricity
No full textPurposeUsing the lens of the natural resource-based view (NRBV) theory, this study investigates the effect of green supply chain management (GSCM) practices such as green manufacturing (GM), eco-design (ED), green purchasing (GP) and investment recovery (IR) on the carbon-neutral supply chain (CNSC) performance of firms through the mediating influence of logistics eco-centricity (LE).Design/methodology/approachA conceptual framework that hypothesizes the relationship between GSCM practices, LE and the CNSC performance of firms is developed. Key GSCM practices are then identified using experts' opinions. Furthermore, we collected responses from logistics companies to validate the conceptual framework using the partial least squares structural equation modeling (PLS-SEM) method.FindingsThrough this study, we found that GSCM practices significantly improve a firm's CNSC performance, and the relationships between GSCM practices and CNSC performance are positively mediated by LE.Practical implicationsThe implications of the study suggest that logistics managers can benefit from the findings of this study to comprehend the impact of various GSCM techniques on LE and CNSC from the viewpoint of the NRBV paradigm.Originality/valueThis research provides valuable perspectives for managers and supply chain (SC) practitioners in their quest for sustainable and environmentally responsible SC operations through an extensive and novel analysis of the connection between GSCM practices, LE and CNSC performance.Engineering, Industrial || Engineering, Manufacturing || Managemen
Relationship between monetary policy and financial asset returns in Türkiye: Time, frequency, and quantile-based effects
No full textThis study analyzes the effect of monetary policy, which are proxied by weighted average cost of funding (WACF) and Borsa Istanbul repurchase interest rate (REPO), on the returns of the main financial assets of monetary policy in T & uuml;rkiye. Using daily data between January 4, 2011 and August 31, 2023, the study applies novel nonlinear time-series methods, such as wavelet coherence (WC) and quantile-on-quantile regression (QQ) as baseline methods and quantile regression (QR) for robustness. The findings demonstrate that (i) monetary policy has a stronger effect on financial asset returns at middle and higher frequencies across different periods || (ii) monetary policy has mainly declines (increases) effect on financial asset returns at lower and middle (higher) quantiles || (iii) the robustness of the outcomes is confirmed. Thus, the outcomes show that monetary policy has a significant effect on financial asset returns, and the effects vary across times, across frequencies, quantiles, and financial assets.Business, Finance || Economic
Systematic Literature Review of Health Tourism Innovation
No full textInnovation is an important issue for any business and especially vital concept for the establishment and growth of a successful health tourism businesses for gaining business improvement and differential advantage in competition. Purpose of this study is to figure out gaps in the innovation in health tourism entrepreneurship literature, show the comprehensive whole situation, areas where the related areas focused on and indicate the related promising areas for research in health tourism innovation. Thus, the significance of this study lies in 2 sub topics as || 1) providing a brief literature review on health tourism innovation 2) indicate the research gaps in health tourism innovation. Results indicate that there is a serious research gap in the innovation studies in spa and wellness tourism, since studies are concentrated on health and medical tourism. Moreover, it is understood that qualitative research is preferred by the majority of the authors followed by the mixed methods which leads to a research gap for quantitative studies in the area. Hence, most researched areas consist of determinants of innovativeness, impact on costs, innovation's relationship with sustainability, innovation drivers, collaboration, aspects of innovation on success, innovation types' effectiveness on health tourism establishments and successful innovation applications.Hospitality, Leisure, Sport & Touris
Modelling and analysis of heat pump integrated Photovoltaics-Wind systems for an agricultural greenhouse in Turkey
No full textThis study focused on modelling and analysing photovoltaics and wind systems to meet the heating demand of a commercial greenhouse. The aim is to evaluate technical, economic, and environmental performances of the related systems and to determine the optimum configuration. A novel approach was introduced by integrating hybrid energy systems with large-scale wind turbines and developing a dynamic heat transfer model. A large commercial greenhouse with an area of 26,640 m2 located in Izmir, Turkey was selected for considering Mediterranean climate, and a detailed heat transfer model of the greenhouse were developed considering heat transfers by convection, radiation, ventilation, and infiltration. A combination of air source heat pumps, photovoltaic panels and wind turbines were used for meeting the heating demand of the related greenhouse. Five different on-grid energy systems scenarios, namely (i) Photovoltaics-Heat Pump, (ii) Photovoltaics-Wind Turbine- Heat Pump, (iii) Wind Turbine- Photovoltaics- Heat Pump (iv) Wind Turbine- Heat Pump, and (v) only Heat Pump were considered. The system modelling with a detailed heat transfer analysis of the greenhouse was made by MATLAB. The energy analysis of the systems was performed on an hourly basis for one calendar year. The annual heating demand and the corresponding electricity consumption of the greenhouse were calculated as 497.37 and 114.07 kWh/m2, respectively. Net Present Value, Levelized Cost of Energy and CO2 savings were used to evaluate economic and environmental performances of the systems. Among five on-grid energy system scenarios, the first scenario, consisting of 5271 photovoltaic panels and 20 heat pumps, emerged as the most economically attractive choice with Net Present Value and Levelized Cost of Energy of /kWh, respectively. Critical parameters affecting the economy of this scenario were found to be electricity prices, tomato yield, and photovoltaic panel prices. For environmental evaluation the fourth scenario, integrating wind turbines and heat pumps, achieves the highest CO2 savings of 2,064.73 tons due to increased renewable electricity production and lower life-cycle CO2 emissions of wind turbines compared to photovoltaic systems. This analysis enhanced the understanding of energy dynamics in greenhouse environments, contributing to the advancement of sustainable practices in agriculture.Thermodynamics || Energy & Fuels || Engineering, Mechanical || Mechanic
Dual Band Cavity-Backed Filtering Antenna with Modified Coupling Slot Structure
No full textIn this study, the loading stub technique is proposed to convert a wideband 2 x 2 full metal cavity-backed antenna into a dual band antenna for satellite communication (SatCom) systems. A wideband 2 x 2 cavity-backed antenna is converted to a dual-band antenna by simply adding stubs to the conventional coupling slot structure, which act as a filter. The filtering antenna does not change the wideband antenna's lateral and longitudinal dimensions and does not distort gain and radiation characteristics within in-band frequency regions. By integrating these stubs, the undesired frequency band of 12.5 - 13.75 GHz between Rx (10.7 - 12.5 GHz) and Tx (13.75 - 14.5 GHz) in-bands at Ku-band is effectively suppressed, which improves isolation and lowers interference. The simulated fractional bandwidths (FBW) for vertical bar S-11 vertical bar <-10 dB are 15.78% (10.68 - 12.51 GHz) and 8.1% (13.74 - 14.9 GHz) at the Rx and Tx bands, respectively. The peak gain values range from 13.06 to 13.92 dBi at Rx and 13.57 to 14.24 dBi at Tx bands. Besides, the out-of-band rejection level reaches 20.7 dB at 13 GHz while covering the entire Rx and Tx bands of the Ku-band.Engineering, Electrical & Electronic || Telecommunication
The impact of cognitive filters on strategic actions and relationships: an analysis from local environmental advocacy in the Aegean Region, Turkey
No full textAlthough several internal and external factors may influence environmental non-governmental organizations' (ENGOs) action sets and networking behaviors, their values and priorities deserve special attention. Existing research highlights the importance of mobilizing resources and utilizing political opportunities in environmental advocacy || however, there is relative silence regarding the impact of how ENGOs cognitively position themselves in a contested field. Through a quantitative analysis of survey data from 117 local ENGOs in the Aegean Region of Turkey, we examine whether and how organizational identity, scope of environmental issues, and core environmental purpose (transactional or informational) as three cognitive filters play a role in shaping grassroots ENGO activities and relationships with diverse actors. A set of regression models indicates that claiming an activist identity, pursuing a higher number of environmental issues, and having a confrontational goal significantly influences local ENGOs' strategic actions and the type and intensity of their external ties. These findings contribute to the discussions around resource mobilization theory and the political opportunity structure framework by highlighting the importance of intangible, less visible, ideological dimensions, and of cognitive framing in mobilizing for environmental causes.Environmental Sciences || Environmental Studie
Integrating digital and sustainable entrepreneurship through business models: a bibliometric analysis
No full textWhile research exploring the benefits and challenges of integrating sustainability and digitalization in new ventures has been on the rise, a comprehensive examination of the accumulated knowledge on this topic remains elusive. Addressing this gap, this study aims to identify the simultaneous focus on digitalization and sustainability aspects in entrepreneurship literature and to investigate how the business model perspective has been incorporated into these studies. Using a two-phase bibliometric analysis of 284 papers from 2005 to 2022 in the Web of Science database, this paper identifies the unique research clusters in the literature. The gathered data was subjected to co-occurrence, citation, co-citation, co-author, and bibliographic coupling analysis. The results reveal that while some studies prioritize digital entrepreneurship with minimal consideration of sustainability, others predominantly emphasize social impact and sustainable development, treating digitalization merely as a means to an end. Additionally, only a small group of scholars have surveyed business models in this context. This study not only offers valuable insights into current trends and patterns in digital sustainability, but also provides a framework and suggestions for scholars and entrepreneurs alike to navigate this evolving landscape. The findings especially highlight the need for business model thinking to connect the digital and sustainable features of entrepreneurship, for the creation of more diverse international scholar networks, and for the execution of in-depth empirical research that allows for the inquiry of particular relationships and mechanisms.Busines
Gen Z travel intentions and museum visits in the metaverse: case of Egypt, Scotland, and Turkey
No full textThis early-stage study explores Gen Z's travel intentions and virtual museum visits in the metaverse by experiencing Egypt, Scotland, and Turkey. The subjective perception and judgment of Gen Z users are investigated in the immersive environment. Semi-structured interviews and laboratory sessions took place with 20 volunteers in three studies. Study 1 and Study 2 reveal different views of Gen Z concerning their travel intentions as two open-air experiences in the metaverse. Study 3 shows Gen Z perspectives of a virtual museum visit as an indoor experience. Through this study, we could form a link between the metaverse and Gen Z travel intentions using two travel applications for Egypt and Scotland, and a museum application for Turkey, which has rarely been discussed before. The study also guides an experience, interaction, interface design for VR 360 video and future-related tourism products and services for Gen Z users. The study illuminates the travel and metaverse relationship for future studies for practitioners and researchers.Hospitality, Leisure, Sport & Touris
Empirical Nexus Between Firm Characteristics, Market Characteristics, Financial Delinquency, and Its Analogy to Access to Finance for SMEs
No full textThe study highlighted the role of firm characteristics, market characteristics, and financial delinquency on access to finance for small and medium-sized enterprises (SMEs). The study also described the mediating role of enterprise managerial skills and technology advancement and the moderator role of government support. The 410 samples were collected from SMEs through survey questionnaires and analyzed with partial least square-structural equation modeling (PLS-SEM). The results revealed that firm characteristics, market characteristics, and financial delinquency affected SMEs' access to finance. The enterprise managerial skills and technology advancement partially impact mediators, and government support plays a partial moderator role. The study contributed by exploring the unique concepts of the challenge toolkit that directly or indirectly influences access to finance for SMEs. In addition, the study contributed through the impressive comparative enormity of various financial demands from SMEs' perspective along with the mediator and moderator roles. The study also constructs an exclusive relationship with the theory of discouraged borrower and human resource theory and elaborates on the future direction for researchers. The study's findings are highly suitable for SMEs to identify the complex finance access challenges. Moreover, the study provides a flexible way for SMEs to manage a firm reputation in the market and enhance enterprise managerial knowledge for obtaining a loan from banks by fulfilling all codal formalities.Economic