Cheoljun Eom, Taisei Kaizoj, Jong Won Park and Enrico Scalas
This paper empirically examines the statistical properties of realized volatility and the relationships between volatility and correlation measurements of realized volatility by…
Abstract
This paper empirically examines the statistical properties of realized volatility and the relationships between volatility and correlation measurements of realized volatility by using intraday high-frequency foreign exchange (FX) rates. Results regarding the distributional and dynamic properties of realized volatility are in agreement with the findings of previous studies. However, the positive correlation present in previous studies is not found in the case of JPY. On trading days with low volatility in the FX market, realized correlation coefficients between JPY and other currencies have positive values, while realized correlation coefficients on trading days with high volatility show negative values. These results are due to the Japanese government's intervention in the FX market, particularly during trading days with high volatility. In this regard, our results suggest that the positive relationships between volatility and correlations verified in previous studies are not a general phenomenon in the case of government intervention and government intervention may distort the efficiency of the FX market. In addition, we show that the multivariate measurement of realized volatility based on intraday high-frequency data can be a useful tool for determining the occurrence of external intervention in the FX market.
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Narinder Kumar, Bikram Jit Singh and Pravin Khope
Inventory models are quantitative ways of calculating low-cost operating systems. These models can be either deterministic or stochastic. A deterministic model hypothesizes…
Abstract
Purpose
Inventory models are quantitative ways of calculating low-cost operating systems. These models can be either deterministic or stochastic. A deterministic model hypothesizes variable quantities like demand and lead time, as certain. However, various types of research have revealed that the value of demand and lead time is still ambiguous and vary unanimously. The main purpose of this research piece is to reduce the uncertainties in such a dynamic environment of Industry 4.0.
Design/methodology/approach
The current study tackles the multiperiod single-item inventory lot-size problem with varying demands. The three lot sizing policies – Lot for Lot, Silver–Meal heuristic and Wagner–Whitin algorithm – are reviewed and analyzed. The suggested machine learning (ML)–based technique implies the criteria, when and which of these inventory models (with varying demands and safety stock) are best fit (or suitable) for economical production.
Findings
When demand surpasses a predicted value, variance in demand comes into the picture. So the current work considers these things and formulates the proper lot size, which can fix this dynamic situation. To deduce sufficient lot size, all three considered stochastic models are explored exclusively, as per respective protocols, and have been analyzed collectively through suitable regression analysis. Further, the ML-based Classification And Regression Tree (CART) algorithm is used strategically to predict which model would be economical (or have the least inventory cost) with continuously varying demand and other inventory attributes.
Originality/value
The ML-based CART algorithm has rarely been seen to provide logical assistance to inventory practitioners in making wise-decision, while selecting inventory control models in dynamic batch-type production systems.
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Michele Bigoni, Warwick Funnell, Enrico Deidda Gagliardo and Mariarita Pierotti
The study focusses on the complex interaction between ideological beliefs, culture and accounting by identifying during Benito Mussolini's time in power the contributions of…
Abstract
Purpose
The study focusses on the complex interaction between ideological beliefs, culture and accounting by identifying during Benito Mussolini's time in power the contributions of accounting to the Italian Fascist repertoire of power in the cultural domain. It emphasises the importance of accounting in making the Alla Scala Opera House in Milan a vital institution in the creation of a Fascist national culture and identity which was meant to define the Fascist “Ethical State”.
Design/methodology/approach
The study adopts the Foucauldian concept of discourse in analysing the accounting practices of the Alla Scala Opera House.
Findings
Financial statements and related commentaries prepared by the Alla Scala Opera House were not primarily for ensuring good management and the minimisation of public funding in contrast to the practices and expectations of accounting in liberal States. Instead, the dominant Fascist discourse shaped the content and use of accounting and ensured that accounting practices could be a means to construct the Opera House as a “moral individual” that was to serve wider national interests consistent with the priorities of the Fascist Ethical State.
Research limitations/implications
The study identifies how accounting can be mobilised for ideological purposes in different ways which are not limited to supporting discourses inspired by logics of efficiency and profit. The paper also draws attention to the contributions of accounting discourses in shaping the identity of an organisation consistent with the priorities of those who hold the supreme authority in a society.
Social implications
The analysis of how the Fascist State sought to reinforce its power by making cultural institutions a critical part of this process provides the means to understand and unmask the taken-for-granted way in which discourses are created to promote power relations and related interests such as in the rise of far-right movements, most especially in weaker and more vulnerable countries at present.
Originality/value
Unlike most of the work on the relationship between culture and accounting which has emphasised liberal States, this study considers a non-liberal State and documents a use of accounting in the cultural domain which was not limited to promoting efficiency consistent with the priorities now recognised more recently of the New Public Management. It presents a micro-perspective on accounting as an ideological discourse by investigating the role of accounting in the exploitation of a cultural institution for political purposes.
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Patrick Lo, Robert Sutherland, Wei-En Hsu and Russ Girsberger
The Saint Valentine's Decree (1984) and the ensuing hard‐fought referendum (1985), which reduced the automatisms of scala mobile, started a process of redefinition of wage fixing…
Abstract
Purpose
The Saint Valentine's Decree (1984) and the ensuing hard‐fought referendum (1985), which reduced the automatisms of scala mobile, started a process of redefinition of wage fixing in Italy, which culminated with the final abolition of scala mobile (1992) and the approval of Protocollo d'intesa (1993). Since then, following new corporatist principles, a national system of centralised wage bargaining (concertazione) and so‐called “institutional indexation” have governed the determination of wages. Does incomes policy generate greater coordination in the process of wage formation? Does it cause greater co‐movement of wages, prices, labour productivity and unemployment? This paper aims to answer these questions with reference to one of the G8 economies.
Design/methodology/approach
After testing for unit root each component by using the ADF, Phillips and Perron, DF‐GLS and Zivot and Andrews statistics, the paper tests for co‐integration the so‐called WPYE model using different methods. The Engle and Granger approach is used to assess the impact of incomes policy on the speed of adjustment of real wages, productivity (and unemployment) to their equilibrium value, while the Gregory and Hansen procedure serves as a means to endogenously detect the presence of a regime shift. The paper estimates coefficients before and after the structural break.
Findings
Incomes policy based on the 1993 Protocol has caused a regime shift in the process of wage determination. The long‐run estimates of the WPYE model do not generate stationary residuals except when a dummy for 1993 is added. The share of wages over GDP reduces by about ten percentage points in the early 1990s and has stood at about 57 per cent since 1995. The link with productivity is close to one‐to‐one only before the break. The feedback mechanism, as measured by the coefficient of lagged residuals in short‐run estimates, is increased from −0.46 in the pre‐reform to −0.79 in the post‐reform period, suggesting that incomes policy has increased real wage flexibility indeed. In recent years the link between real wages and (very low) labour productivity growth has weakened. In a sense, incomes policy has introduced a new form of (upward) wage rigidity. Last but not least, incomes policy has changed the correlation with the unemployment rate from positive to not statistically significant.
Research limitations/implications
Future developments will focus on disentangling the impact of incomes policy vis‐à‐vis other policy interventions on WPYE and on unemployment.
Practical implications
The analysis calls for a careful revision of the 1993 Protocol aimed at better protecting the purchasing power of real wages without losing control on inflation, and introducing growth‐generating mechanisms.
Originality/value
The paper studies the impact of incomes policy on WPYE and the Phillips curve by means of co‐integration and structural break analysis. It proposes to interpret the effect of incomes policy on the Phillips curve as changing the coefficient of the error correction mechanism that leads real wages to their long‐run equilibrium value.
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Enrico Marelli and Francesco Pastore
The purpose of this paper is to introduce the special issue on “Labour, productivity and growth”.
Abstract
Purpose
The purpose of this paper is to introduce the special issue on “Labour, productivity and growth”.
Design/methodology/approach
The paper discusses the articles in the special issue, which investigate the main theme – labour, productivity and growth – from different points of view by employing a variety of econometric methods. These include improvement of the evaluation of the impact of labour market flexibility on economic performance, analysis of the macroeconomic law of decreasing returns to labour, a new panel co‐integration method, and a reinterpretation of co‐integration analysis to assess the impact of incomes policy. Institutional variables, in particular the system of industrial relations, are duly considered.
Findings
The papers in the special issue highlight different causes of sluggish economic (productivity) growth in Europe, in the light of not only traditional macroeconomic variables, such as total factor productivity and labour market flexibility, but also such factors as neo‐corporatist industrial relations and management practices, which are generally neglected in the literature.
Originality/value
The paper introduces a number of articles proposing innovations in the interpretation and application of a wide range of theoretical approaches and econometric methodologies. It also discusses several policy suggestions for fighting sluggish productivity growth, including investment in research and development, human capital, flexicurity, innovative industrial relations practices and high‐performance workplace practices also considered capable of affecting macroeconomic performance.
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The purpose of this paper is to assess the role of the Protocol '93 bargaining model in favouring the slow‐down of the Italian economy and to design a correction.
Abstract
Purpose
The purpose of this paper is to assess the role of the Protocol '93 bargaining model in favouring the slow‐down of the Italian economy and to design a correction.
Design/methodology/approach
The impact of the Protocol on factor income distribution is assessed through a deterministic dynamic model, and tested for the 1993‐2008 period. The paper explores theoretically and empirically the weakening of the incentives for both workers and employers to engage in fostering productivity.
Findings
In a macroeconomic setting with structural imbalance between the product and the labour markets reforms, the bargaining model has automatically increased up to 2002 the capital share in income, reducing the incentives for both social partners to accelerate productivity, as the labour share in income and the propensity to invest are co‐integrated (Johansen test). An analytical solution for correcting the bargaining distributive bias is proposed.
Research limitations/implications
Further research should provide a picture of the different distributive behaviours of industrial sectors, particularly for industries exposed to/protected from international competition. The actual functioning of the new bargaining model (the Accordo Quadro of 2009) should also be assessed.
Practical implications
The bargaining model should be reformed so as to restore the right incentives for social partners. National industry‐wide wage bargaining should both incentivise and complement insufficient local bargaining.
Social implications
The benefit of increased productivity and resumed growth has vast social implications, especially with reference to the sustainability of the welfare system.
Originality/value
The scientific literature has lacked any formal description of the dynamic operation of the Italian bargaining model, which is particularly valuable to both social partners and policy makers.
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The study of markets encompasses a number of disciplines – including anthropology, economics, history, and sociology – and a larger number of theoretical frameworks (see Plattner…
Abstract
The study of markets encompasses a number of disciplines – including anthropology, economics, history, and sociology – and a larger number of theoretical frameworks (see Plattner, 1989; Reddy, 1984; Smelser & Swedberg, 1994). Despite this disciplinary and theoretical diversity, scholarship on markets tends toward either realist or constructionist accounts (Dobbin, 1994; Dowd & Dobbin, forthcoming).1 Realist accounts treat markets as extant arenas that mostly (or should) conform to a singular ideal-type. Realists thus take the existence of markets as given and examine factors that supposedly shape all markets in a similar fashion. When explaining market outcomes, they tout such factors as competition, demand, and technology; moreover, they can treat the impact of these factors as little influenced by context. Constructionist accounts treat markets as emergent arenas that result in a remarkable variety of types. They problematize the existence of markets and examine how contextual factors contribute to this variety. When explaining market outcomes, some show that social relations and/or cultural assumptions found in a particular setting can qualify the impact of competition (Uzzi, 1997), demand (Peiss, 1998), and technology (Fischer, 1992). Constructionists thus stress the contingent, rather than universal, processes that shape markets.
Luxury fashion brands have started differentiating their investment strategies and enlarging their sectors of activity, for instance, entering tourism. The overlay between…
Abstract
Luxury fashion brands have started differentiating their investment strategies and enlarging their sectors of activity, for instance, entering tourism. The overlay between traditional behaviors and innovative strategies has left a mark on the cities and neighborhoods. This chapter explores the spatial distribution of luxury tourism infrastructure in Milan. This transition does not affect only preeminent locations, such as monumental squares and high streets, but also places traditionally excluded from the “luxury circuits.” The location of 5-star hotels and premium tourism facilities in Milan (Michelin restaurants and spas) differ from the general tourism infrastructure. The study identifies polarization in the touristic offer and a parallel influence in the real estate market.