the analysis of optimal control model in matching problem between manufacturing and marketing abstract a mathematical model is developed and presented to solve the optimal control problem in matching between manufacturing and marketing when the market demand possesses the property of linearity the main purpose of this paper is to investigate the optimal choice between production rate which may affect the inventory level and the optimal sales rate at each time through different pricing strategies so as to achieve the maximum profit for a given planning horizon the results demonstrated that the relative size of the output yielded by minimizing average cost and yielded by maximizing profit at constant zero inventory can determine the optimal production rate and sales rate furthermore the optimal inventory policy can be determined to be a constant zero inventory policy or constant positive inventory policy or mixed inventory policy according to the value of optimal production rate

optimal joint pricing and lot sizing with fixed and variable capacity this paper examines previously unexplored fixed and variable capacity problems of jointly determining an item s price and lot size for a profit maximizing firm facing constant but price dependent demands over a planning horizon we apply geometric programming to these constrained nonlinear maximization problems with nonconcave objective functions and obtain global optimal solutions using kuhn tucker condition marginal and sensitivity analyses we investigate model interactions provide managerial implications on the optimal capacity decisions and explore the postoptimal behavior of the price lot size and capacity expansion and reduction size some findings cast interesting insights different from previous just in time management studies without pricing consideration

the varying impacts of agricultural support programs on u s farm household consumption farm households are economic agents whose income is derived from farm off farm and government sources this article uses farm level data from the agricultural resource management survey arms and recent advances in the econometric theory of dynamic pseudo panels to show that farm households consume various sources of income differently at the margin particular attention is given to a specific type of lump sum government transfer payment intended to be decoupled from independent of farm production decisions the results suggest that relatively decoupled government subsidies have a greater marginal effect on farm household consumption than subsidies that are tied to market conditions farm households often receive income from off farm employment and government support payments in addition to farm production revenues if income is fungible then marginal consumption should not vary by income source however carriker et al 1993 show that farm household consumption does vary at the margin by income source they find that off farm income and income from government subsidies are consumed at a higher marginal rate than income from farm production revenues if farm household consumption varies at the margin by income source different types of government payments may affect consumption differently closely following carriker et al 1993 this analysis further disaggregates sources of farm household income and compares how different types of government payments affect farm household consumption it is shown that government payments that are relatively decoupled from farm production decisions are consumed at a much higher marginal rate than government payments that

strong planning and forecast horizons for a model with simultaneous price and production decisions abstract in this paper we have solved a general inventory model with simultaneous price and production decisions both linear and non linear strictly convex production cost cases are treated upper and lower bounds are imposed on state as well as control variables the problem is solved by using the lagrangian form of the maximum principle strong planning and strong forecast horizons are obtained these arise when the state variable reaches its upper or lower bound the existence of these horizons permits the decomposition of the whole problem into a set of smaller problems which can be solved separately and their solutions put together to form a complete solution to the problem finally we derive a forward branch and bound algorithm to solve the problem the algorithm is illustrated with a simple example

marriage cohabitation and women s response to changes in the male wage structure using microdata and grouped data that cover the period 1996 to 2006 we assess the extent to which cohabiting women adjust their labour supply to a lesser extent if any than married women in response to changes in male wages both microdata regressions and grouping estimators unambiguously indicate that cohabiting women respond less to variation in male wages than married women however the magnitude of the difference is not sizeable we also assess the magnitude of married men s and cohabiting men s own wage elasticities and find that they do not differ much combined with the fact that male earnings account for roughly two thirds of family earnings these two findings explain why the impact of changes in male wages on family earnings is very similar for married couples and cohabiting couples in both cases a 10 decline in male wages appears to induce roughly a 6 drop in family earnings

transfer pricing in a dynamic marketing operations interface abstract a transfer price mechanism is proposed to coordinate the strategies of the marketing and operations functional areas operating in a dynamic interface environment in a decentralized firm marketing and operations are strategic decision makers in a differential game in which marketing has price and advertising and operations has production as control variables and advertising goodwill and production backlog are state variables a constant transfer price is entered into the objective functionals for marketing and operations and subgame perfect feedback strategies are derived for price advertising and production as functions of the state variables the feedback strategies allow a solution for the dynamic system involving goodwill and backlog and the total payoff to the firm the sum of the payoffs to marketing and operations is determined as a function of the transfer price finally for certain parameter conditions an interior maximum of the payoff function is achieved and the optimal transfer price is identified

rising u s earnings inequality and family labor supply the covariance structure of intrafamily earnings this paper studies the labor supply contributions to individual and family earnings inequality during the period of rising wage inequality in the early 1980 s working couples have positively correlated labor market outcomes which are almost entirely attributable to permanent factors an intertemporal family labor supply model with this feature is used to estimate labor supply elasticities for husbands of 0 05 and wives of 0 40 this implies that labor supply explains little of the rising annual earnings inequality for married men but over 20 percent of the rise in family inequality and 50 percent of the modest rise in female inequality

optimal strategies for general price quality decision models of new products with learning production costs abstract the question of product quality permeates every level of business and is becoming crucial for the survival of modern manufacturing firms in automotive and high tech industries in this paper we deal with the optimal price and quality policies for the introduction of a new product on the supply side the firm wants to determine the unit price and quality level over time given that unit cost declines along a learning curve and increases if quality is made greater on the demand side dynamic demand is related to price and quality as well as to cumulative sales which represent diffusion and saturation effects we will model this problem in a general framework that includes several previous results as special cases by applying the maximum principle we will derive the optimal price and quality policies and discover the interactions between these two major strategic marketing instruments and the diffusion process several fundamental theoretical results will be established for the model under certain specified conditions higher prices do imply higher quality and under other conditions the optimal price declines over time while the product quality improves to illustrate these results the theoretical results are applied to two specific cases the first one is a simple nonseparable demand growth function in price and quality the other is a separable demand function of price and quality

an empirical model of labor supply in a life cycle setting this paper formulates and estimates a structural intertemporal model of labor supply using theoretical characterizations derived from an economic model of lifetime behavior a two step empirical analysis yields estimates of intertemporal and uncompensated substitution effects which provide the information needed to predict the response of hours of work to life cycle wage growth and shifts in the lifetime wage path

an empirical model of discrete and continuous choice in family labor supply because of the interdependent nature of family labor supply decisions the nonnegativity constrai nt on women s hours of work will spill over into other consumption an d labor supply decisions of the family here the author develops an e conometric model of family labor supply that captures this spillove r while addressing the usual censoring issues as well the model i s based on a flexible direct utility function and permits unobservabl e differences in tastes the model is estimated by the maximum likeli hood method on a sample of about 1 200 families from the panel study of income dynamics copyright 1987 by mit press

optimal pricing policy in the presence of experience effects i introduction in this paper we analyze the problem of optimal intertemporal pricing for a monopolist when cur rent and past output affect future cost and or demand conditions through experience in production and or in consumption learning by doing the experience curve contagion habit formation bandwagon and snob effects are all examples of terminologies used to describe such situations we call these experience effects for convenience and explore profit maximizing pricing behavior when such effects exist in the traditional profit maximization model a firm chooses the price output combination so as to maximize short run i e current profits the familiar mc mr equality given that price is higher than average variable cost and a nonbind ing capacity constraint is a necessary condition for price takers as well as price makers this as sumes that the current pricing decision has no bearing on the future so that long run profit is maximized by a series of short run maximizing

integrating marketing and production planning in make to order companies abstract make to order companies are in the business of supplying products only in response to a customer s order they may supply unique products made to a customer s specification and or a limited range of products they range from the traditional job shop e g cutting pieces of metal to a specific shape to producers of machine tools e g a vulcanising line a major problem is the divide between sales marketing and production the production function is often faced with unrealistic delivery dates for incoming orders this arises when the sales force quote delivery dates and prices which will maximise the chance of the company winning the order the lack of coordination with production often leads to confirmed orders being delivered later than promised by sales and or being produced at a loss or alternatively production has to delay other orders with consequent extra costs the need to integrate sales and production planning considerations at the customer enquiry stage in deciding how to respond has been pointed out by several authors yet little research has been carried out the paper will discuss some possible approaches to the problem these essentially depend on estimating routinely the probability of winning an enquiry order dependent on many factors including price and lead time etc companies do not traditionally keep records of this data particularly records of unsuccessful bids and on competitors in addition the paper describes the experience of setting up a system to collect such data in a major uk company and the potential uses of such a database

a supply chain under limited time promotion the effect of customer sensitivity abstract we consider a two echelon supply chain with a supplier and a retailer facing stochastic customer demands the supplier is a leader who determines a wholesale price in response the retailer orders products and sets a price which affects customer demands the goal of both players is to maximize their profits we find the stackelberg equilibrium and show that it is unique not only when the supply chain is in a steady state but also when it is in a transient state induced by a supplier s promotion there is a maximum length to the promotion however beyond which the equilibrium ceases to exist moreover if customer sensitivity increases then the wholesale equilibrium price decreases product orders increase and product prices drop this effect well observed in real life does not however necessarily imply that the promotion is always beneficial conditions for the profitability of a limited time promotion are shown and analyzed numerically we discuss both open loop and feedback policies and derive the conditions necessary for them to remain optimal under stochastic demand fluctuations

resource allocation to defensive marketing and manufacturing strategies abstract in this paper we investigate the coordinated use of marketing and manufacturing strategies to formulate a defensive business strategy for an incumbent firm upon market entry while defensive marketing strategies have been researched extensively little has been done on defensive manufacturing strategies and even less on coordinating these two we propose a formulation for the joint formation of a defensive strategy by the marketing and production functions under budget constraint considerations the incumbent firm may allocate its resourcesto advertising and distribution expenditures as well as to manufacturing investments to reduce the unit production cost the incumbent firm has also the option of simply allocating all of its resources purely to advertising and distribution we show that while there exist cases where the optimal reaction to entry involves investments in manufacturing improvements there are also cases where defense is in marketing strategies alone we identify the market conditions that promote such reactions to entry and also provide sensitivity analysis

optimal production purchasing and pricing a differential game approach abstract this paper deals with a problem of determining optimal production and pricing policies of a manufacturing firm which is supplying a retailer the latter faces a price dependent demand function towards the final consumers and wishes to determine optimal purchasing and pricing policies both firms carry inventories and backlogging is permitted the problem is modelled as a two player nonzero sum differential game with the inventory levels as the state variables the controls are the rates of production and purchasing as well as the prices assuming linear production costs but convex ordering and holding costs open loop nash controls are characterized by using switching point analysis as well as phase diagrams

should degrowth embrace the job guarantee degrowth should consider the right to work a job guarantee jg as a way of making a smaller economy more just and socially sustainable economic shrinkage in richer countries is accompanied by increased unemployment a bad enough problem in itself but also a barrier to voters acceptance of the degrowth path since being out of work is distinct from being poor anti poverty income policies should be approached separately the jg is one of several paths to full employment including reduced working time this essay only briefly mentions some real world jg programs and some technical objections the main suggestion is to move employment from being a matter of economics particularly economic growth to being a political right a right to work is necessarily effective and would avoid sacrificing the ecological and social goals of degrowth on the altar of full employment

differential game models in management science abstract this paper reviews a number of differential games applications to management science and operations research problems published with a few exceptions during the last decade the purpose of the article is to provide the reader with an up to date account of the state of the art within this field after having stated in an introduction the general differential games framework as well as some conceptual problems we proceed to review the models which have been divided into the following functional areas investment consumption and employment production inventories and maintenance marketing advertising pricing and rd bargaining natural resources and pollution the survey concludes with some remarks on applicability solvability and directions for future research

estimating labour supply responses using tax reforms the 1980 s tax reforms and the changing dispersion of wages offer one of the best opportunities yet to estimate labor supply effects nevertheless changing sample composition aggregate shocks the changing composition of the tax paying population and discontinuities in the tax system create serious identification and estimation problems we develop grouping estimators that address these issues our results reveal positive and moderately sized wage elasticities we also find negative income effects for women with children

household work and energy consumption a degrowth perspective catalonia s case study the present work contributes to bringing visibility to the part of social work that is referred to as unpaid work this part of social work remains outside the market but it is necessary to structure and maintain households human relationships and communities and providing sustenance and care it represents a flow of hidden subsidies to the economy mostly shaped structured and experienced by women through an explorative case study in catalonia we relate the use of time in catalan society with the relative consumption of energy this research strategy allows us to see the dangers of substituting labour and skills from household based production to the commodity based economy in terms of an increase in energy demand in a context of the end of cheap oil on the contrary from a degrowth perspective we argue that the future adaptability might require policies reallocating resources towards the unpaid and the community

the optimal acquisition of automation to enhance the productivity of labor decisions concerning the mix of automation and labor employed by an organization are embedded in the long term strategic plan since the composition of productive capacity impacts on an organization s ability to survive and compete in this paper the optimal mix of automation and labor is identified for automation which acts to enhance the productivity of an organization s workforce the incentives considered for acquiring automation are increasing the level of output reducing the high cost of labor and compensating for a limited supply of labor factors explicitly examined by the model include the future long term goal level of output costs associated with maintaining the workforce wages and automation and costs associated with changing the levels of workforce and automation since the formulation is dynamic so that all exogenous and decision variables may be expressed as functions of time the effects of technological improvement increasing wage rates changing labor supply and diminishing retur

marketing production decisions in an industrial channel of distribution this paper presents a model that considers the interface between marketing and production decisions in a channel of distribution of industrial goods comprised of a manufacturer and a distributor the key issue investigated is the nature of the coordination within the channel in light of an unstable pattern of seasonal demand the investigation which focuses on dynamic issues considers production activities such as product delivery and inventory policy and their link to marketing strategies such as pricing policies the focus here is on the dynamic nature of the coordinational aspects of the various policies for example the following questions are addressed what is the distributor s pricing strategy throughout the season what is the nature of the contractual price in the channel under what conditions should the distributor carry no inventory throughout the seasonal period under what conditions should the manufacturer carry no inventory what is the impact of the seasonal parameters and differing h

the market work behavior and wages of women 1975 94 changes in the labor market participation and wages of women in the united states are analyzed over the period 1975 1994 using data from the current population survey women are organized into nine birth cohorts five schooling groups and each year of age from 25 to 60 years and their weekly and annual work hours their annual work weeks their employment population ratio and their real average hourly earnings tabulated schooling differences in work behavior have become wider in recent cohorts as have their wages the relationship between work and wages is estimated for women of different ages cohorts and marital status the gap between the work of unmarried and married women has narrowed and the role of wages both the wages of women and those of husbands is examined to determine the extent to which changes in wages account for these movements excerpt

the returns to education in thailand a pseudo panel approach summary this study employs the pseudo panel approach for estimating returns to education in thailand while treating the endogeneity bias common to estimates from data on individuals pseudo panel data are constructed from repeated cross sections of thailand s national labor force surveys of workers born during 1946 67 estimates show a downward bias of the returns to education in least squares regressions with individual data a result confirmed with instrumental variable estimation the overall rate of return is between 14 and 16 females have higher returns than males and workers in urban areas have higher returns than those in rural areas

logging conflicts in southern cameroon a feminist ecological economics perspective abstract growing attention has been paid to gender in ecological economics political ecology and development studies but a focus on gender in resource extraction conflicts is still rare this article explores women led resistance movements to commercial logging in south eastern cameroon focusing on the moabi tree baillonella toxisperma the latter provides oil medicine and other non timber products and use values to local forest societies and particularly to women resistances arise because most socio environmental costs of the international logging trade are imposed on the rural populations and especially on women of the extractive regions the aim of this paper is to analyze the root causes of the gender structure of such mobilisations as well as the impacts on gender relations induced by such resource extraction conflicts after proposing a typology of different environmental currents and their gender counterparts this paper focuses on the gender construction of local bantu societies taking as a point of departure paola tabet s thesis that masculine control over production tools is the objective factor revealing the sexual division of work in our case study we found that the men s control over technology not only highlights the sexual work division but also the gendered division of access rights to natural resources thereby we argue that the sexual division of access rights and work revealed through differentiated control over technology are two key institutions explaining the gendered structure of local mobilizations we then discuss the empowerment allowed by the new forms of women s organizations with a particular focus on the appropriation of new production tools by women this highlights a non western form of environmental feminism

assortative mating and female labor supply this paper investigates married women s hours worked disaggregated by the husband s wage decile in the united states this pattern has changed from downward sloping to hump shaped we show that this development can be explained within a standard household model of labor supply when taking into account trends in assortative mating a quantitative analysis of our model shows that female wage growth and decreasing fertility are primarily responsible for the overall increase in wives hours since the 1970s the fact that the most pronounced increases are observed for wives married to high wage men is a result of trends in assortative mating

a joint optimal pricing rebate value and lot sizing model delayed incentives in the form of mail in cash rebates are very popular among manufacturers and more recently among retailers one of the main advantages of rebates is that while they increase demand a small proportion of consumers redeem them in this paper we formulate and solve models for jointly determining the optimal price rebate face value and the optimal order quantity for a price and rebate sensitive deterministic demand the models show that under realistic conditions offering rebates can have significant pricing and inventory policy implications and can lead to a significant increase in profit

family labor supply with taxes over the period 1960 1983 the proportion of federal tax revenue raised by taxation of labor supply has risen from 57 77 percent in this paper we specify and estimate a model of family labor supply which treats both federal and state taxation husbands and wives labor supply are treated jointly rather than in aseparate manner as in previous research a method to calculate the virtual wage for nonworking spouses is used within a utility maximizing framework to treat correctly the joint family labor supply decision joint family efforts are found to be important the efficiency cost deadweight loss of labor taxation is estimated to be 29 6 of tax revenue raised the effect of the new 10 deduction to ease the marriage tax for working spouses leads to a prediction of 3 8 increase in wives labor supply and a 9 decrease in husbands labor supply overall taxes paid are predicted to decrease by 3 4 this abstract was borrowed from another version of this item

solutions to the crisis the green new deal degrowth and the solidarity economy alternatives to the capitalist growth economy from an ecofeminist economics perspective this article deals with three approaches conceived as alternative approaches to the capitalist growth economy the green new deal degrowth and the solidarity economy ecofeminist economics has much to offer to each of these approaches but these contributions remain as of yet unrealized the green new deal largely represents the green economy which holds economic success as contingent upon the ecological restructuring of industrial production the degrowth approach more fundamentally raises questions concerning the relationship between material prosperity and individual and social well being the principles of the solidarity economy involve the immediate implementation of the principles of self determination and cooperation none of these approaches takes into account the claims of ecofeminist economics and none of them clearly view gender equity as essential to economic change the three approaches are however deeply gendered in the sense that they are implicitly based on assumptions concerning women s labor in the sphere of social reproduction this article demonstrates how each approach can be improved upon by the integration of ecofeminist economic principles in order to achieve economic change that also meets claims for gender equity

small sample bias in synthetic cohort models of labor supply this paper investigates small sample biases in synthetic cohort models repeated cross sectional data grouped at the cohort and year level in the context of a female labor supply model i use the current population survey to compare estimates when group sizes are extremely large to those that arise from randomly drawing subsamples of observations from the large groups i augment this approach with monte carlo analysis so as to precisely quantify biases and coverage rates in this particular application thousands of observations per group are required before small sample issues can be ignored in estimation and sampling error leads to large downward biases in the estimated income elasticity copyright 2007 john wiley sons ltd

does compulsory school attendance affect schooling and earnings we establish that season of birth is related to educational attainment because of school start age policy and compulsory school attendance laws individuals born in the beginning of the year start school at an older age and can therefore drop out after completing less schooling than individuals born near the end of the year roughly 25 percent of potential dropouts remain in school because of compulsory schooling laws we estimate the impact of compulsory schooling on earnings by using quarter of birth as an instrument for education the instrumental variables estimate of the return to education is close to the ordinary least squares estimate suggesting that there is little bias in conventional estimates every developed country in the world has a compulsory schooling requirement yet little is known about the effect these laws have on educational attainment and earnings 1 this paper exploits an unusual natural experiment to estimate the impact of compulsory schooling laws in the united states the experiment stems from the fact that children born in different months of the year start school at different ages while compulsory schooling laws generally require students to remain in school until their sixteenth or seventeenth birthday in effect the interaction of school entry requirements and compulsory schooling laws compel students born

joint production and pricing decisions with setup costs and capacity constraints we consider the problem of setting prices and choosing production quantities for a single product over a finite horizon for a capacity constrained manufacturer facing price sensitive demands there is a fixed cost per production run and a variable cost per unit produced both of which may vary by period we characterize properties of the optimal solution considering cases with constant and time varying capacity and with and without speculative motive for holding inventory we show that counter to intuition optimal prices may increase as the capacity increases even when capacity is constant over the horizon we also show that increases in capacity do not always exhibit diminishing marginal returns our procedure produces solutions with much higher profits than can be obtained from a sophisticated sequential procedure in which a well informed and optimum seeking marketing department makes pricing decisions and the manufacturing department seeks to satisfy the resulting demands at minimum cost our results also suggest that firms with seasonal demand and tight capacity constraints should be more aggressive in setting prices to manage their demands than what is typically done in practice finally we discuss how a decision maker can use our procedure as an aid in solving multiproduct versions of the problem

does the labour supply of wives respond to husbands wages canadian evidence from micro data and grouped data using micro data and grouped data we assess the extent to which canadian wives adjusted their labour supply in response to changes in husbands wages during the period 1980 2000 grouped data parameters based on weighted least squares and the unbiased error in variables estimator developed by devereux 2004 2007a b yield cross wage elasticities that are substantially higher in absolute value than those derived from ols regressions run on micro data both grouping estimators indicate that the labour supply of canadian wives responded strongly to changes in husbands wages during the 1980s for the 1990s our estimates of wives cross wage elasticity display greater dispersion a l aide de micro donnees et de donnees groupees on etablit jusqu a quel point les epouses canadiennes ont ajuste leur offre de travail en reponse aux changements dans les salaires de leurs epoux au cours de la periode 1980 2000 les parametres pour les donnees groupees derives par la methode des moindres carres ponderes et de l estimateur developpe par devereux 2004 2007a b engendrent des elasticites croisees qui sont substantiellement plus grandes en termes absolus que ceux derives par la methode des moindres carres ordinaires en utilisant des micro donnees les deux estimations montrent que l offre de travail des epouses canadiennes a repondu fortement aux changements dans les salaires des epoux au cours des annees 80 pour les annees 90 les evaluations des elasticites croisees des salaires montrent une plus grande dispersion

competitive strategies for two firms with asymmetric production cost structures we model joint production marketing strategies for two firms with asymmetric production cost structures in competition the first firm called the production smoother faces a convex production cost and a linear inventory holding cost the second firm called the order taker faces a linear production cost and holds no inventory each firm is assumed to vary continuously over time both its production rate and its price in view of an unstable surge pattern of demand the underlying theoretical motivation is to investigate the temporal nature of the equilibrium policies of two competing firms one operating at or near capacity the production smoother and one operating significantly below capacity the order taker we characterize and compare the equilibrium strategies of the two competing firms among our results we show that if the duopolistic production smoother finds it optimal to hold inventory then he will begin the season by building up inventory continue by drawing down inventory until i

intertemporal substitution in labor supply evidence from micro data the sensitivity of the supply of labor to intertemporal variation in the wage is an important issue in macroeconomics the analysis of social security and pensions and the study of life cycle patterns of work this paper explores two approaches to the measurement of intertemporal substitution that have appeared in the literature the first approach is to use consumption to control for wealth and unobserved expectations about future wages in the labor supply equation the second approach is to estimate a first difference equation for hours in which labor supply from the previous period serves as a control for wealth and wage expectations the results indicate that intertemporal substitution elasticity for married men is positive but small

optimal pricing and production in an inventory model abstract this paper deals with the problem of simultaneously determining the optimal price policy and production rate over a given planning horizon for nonlinear demand functions and convex inventory and shortage cost functions the optimal solution paths are derived by using optimal control theory the treatment of linear nonsmooth cost functions requires the use of a generalized maximum principle the solution method is a phase portrait analysis providing insight into the optimal pricing and production policies as well as the resulting inventory paths moreover it is shown that in the case of nonsmooth piecewise linear cost functions the equilibrium is approached within finite time although the model is nonlinear in the control variables finally it is illustrated that exogenous fluctuations in the demand rate seasonal demand pattern amount to cyclical optimal solutions

optimal pricing strategies for new products in dynamic oligopolies this paper deals with the determination of optimal pricing policies for firms in oligopolistic markets the problem is studied as a differential game and optimal pricing policies are established as nash open loop controls cost learning effects are assumed such that unit costs are decreasing with cumulative output discounting of future profits is also taken into consideration initially the problem is addressed in a general framework and we proceed to study some specific cases that are related to models presented in recent literature three basic classes of sales dynamics are analyzed competition with price effects only competition with price as well as adoption effects and competition with adoption effects only in some cases it turns out that results which hold for the monopoly case carry over to the multi firm case in the sense that the qualitative structure of optimal pricing strategies is the same in the monopoly and the oligopoly cases however due to competitive interdependencies differences certainly exist in the levels as well as the rates of change of optimal prices

women nature and the social construction of economic man abstract this paper argues that the social construction economic man is the product of a hierarchical dualism in western society that has also created rational man and scientific man women and the natural world form the subordinated half of these dualisms central to this paper is the claim that this dualism is not only a cultural theoretical one but also a material one the social construction of economic man is the product of a bifurcated knowledge system and a materially divided society economic man reflects a society in which the embeddedness and embodiedness of humanity is hidden by the division of mind from body and science culture from the natural world for this reason it is not possible to incorporate women and nature into the economy through the commodity form by according them a value as price it is argued that the economic system can only exist if women and nature remain externalised as women form the bridge between an autonomous individualised man and the biological ecological underpinning of his existence central to this analysis is the distinction between social and natural biological time economic man lives in social time clock time while women are responsible for biological time this is not because women are closer to nature biology in an essential sense rather this relationship is imposed upon them by a male dominated society

dynamic pricing and inventory control uncertainty and competition in this paper we study a make to stock manufacturing system where two firms compete through dynamic pricing and inventory control our goal is to address competition in particular a duopoly setting together with the presence of demand uncertainty we consider a dynamic setting where multiple products share production capacity we introduce a demand based fluid model where the demand is a linear function of the price of the supplier and of her competitor the inventory and production costs are quadratic and all coefficients are time dependent a key part of the model is that no backorders are allowed and the strategy of a supplier depends on her competitor s strategy first we reformulate the robust problem as a fluid model of similar form to the deterministic one and show existence of a nash equilibrium in continuous time we then discuss issues of uniqueness and address how to compute a particular nash equilibrium i e the normalized nash equilibrium

a note on competitive supply chains with generalised supply costs abstract this note generalises models from two influential papers in the theory of supply chain outsourcing under competition mcguire and staelin 1983 cachon and harker 2002 the first paper studies the impact of competitive intensity on the outsourcing decision from the supplier s point of view for linear supply cost the second paper examines the impact of supply economies of scale from the retailer s point of view when selling perfectly substitutable products by considering competitive intensity and supply economies of scale simultaneously we find that equilibrium channel structures are primarily determined by the competitive intensity which is true even under supply diseconomies of scale the key message in the second paper of scale economies driving retailer s outsourcing supply decision is highly dependent on the assumption of perfect substitutes our finding has no qualitative difference when either the suppliers or the retailers are modeled as the channel leader and make the outsourcing decisions

a differential game theoretic model for duopolistic competition on design quality in this paper we propose a differential game theoretic model to analyze the design quality and pricing decisions for a product over the product life cycle the market is represented as a duopoly where our product competes against a similar product marketed by our competition the duopolistic competition is modeled as a two player nonzero sum noncooperative game the resulting control theoretic model is solved under certain functional assumptions to describe the nash equilibrium strategies of the two competitors finally observations made on an extensive set of numerical experimentations over a variety of model parameters are summarized into a set of relevant managerial guidelines on developing design quality and pricing strategies

wages youth employment and school enrollment recent evidence from increases in world oil prices we exploit variation in wage growth induced by increases in world oil prices to estimate the elasticity of young men s labor market participation and school enrollment with respect to after tax wages our main finding is that in the aggregate increased wages have a dual impact they tend to reduce at least temporarily young men s full time university enrollment rates but bring back into the labor market some young men who were neither enrolled in school nor employed contrary to previous research we find little evidence that young men with no high school diploma now leave school in response to increased wages

a differential game model of the marketing operations interface in the development of their dynamic strategies the marketing and operations functions within a firm have differing objectives and conflict between the two functions is common the strategic interdependence involving marketing and operations decisions is modeled as a noncooperative differential game demand is assumed to be a function of price and advertising goodwill and marketing controls price and advertising to maximize its discounted stream of revenue net of advertising costs backlogging is allowed and operations controls production to minimize its discounted stream of production and backlog costs a feedback nash equilibrium is derived for the game which allows a solution of the system of differential equations for goodwill and backlog and is analyzed to study the nature of the dynamic strategies for price advertising and production

production inventory and pricing under cost and demand learning effects abstract the paper considers a monopolist firm that plans its production inventory and pricing policy over a fixed and finite horizon the problem is represented by an optimal control model which combines elements from three streams of literature the first of these is a classical or area and deals with optimal production and inventory under exogenously given demand conditions the second is an area of marketing science which studies dynamic pricing under demand learning effects demand learning refers to the situation where current demand for a product is influenced by past demand the third area belongs to microeconomics and industrial organization and is concerned with the effects of learning by doing in a firm s production process learning is reflected in a unit production cost that decreases with cumulative production using a path synthezising procedure we obtain closed form characterizations of optimal production pricing and inventory policies

the usury debate the sustainability debate and the call for a moral economy abstract this article attempts to contribute ethical to perspectives on sustainability initiatives by comparing the relationship between economy and society in the usury debate in early modern england and the sustainability debate in the late 20th century this comparison highlights is the changing relationship between economy and society has been a self conscious and hotly debated struggle among various groups at various times in history the article concludes that if sustainability is going to be a viable ethical project it may have to reclaim access to social and political relations which have been increasingly privatized in market economy throughout the modern period

social enterprises and non market capitals a path to degrowth the aim of this paper is to look at alternatives to the classic for profit shareholding enterprise and to suggest how such alternatives might be supported within the current economic system another aim is to link the social enterprise and degrowth discourses we first re define the economy as including non monetised sectors the core economy and the economy of nature and discuss the liminal zone of not for profit and not only for profit organisations we then look at social enterprise definitions from a degrowth perspective and explain why the dimensions of scale place environment and provisioning patterns need more space in the social enterprise discourse after that we define non market capitals as capitals taken out of the market and placed under local member democratic control and explain their importance in a degrowth economy we give examples of non market capitals and suggest a model involving mutual support between primary and secondary social enterprises finally we suggest areas where more research is needed in this emerging field of inquiry

changes in relative wages and family labor supply the large changes in relative wages that occurred during the 1980s provide fertile ground for studying the behavioral responses of married couples to the wage changes of husbands and wives i find estimates of own wage and cross wage elasticities for men that are very small the own wage elasticity for women is positive and the cross wage elasticity for women suggests a strong negative response of female labor supply to changes in their husband s wages family labor supply behavior determines how changes in individual wage rates translate into family earnings changes the responses of women to changes in their husband s wages attenuated somewhat the increases in individual wage inequality at the family level the results suggest that the earnings of the wives of low income men would actually have fallen over the decade if women s labor supply did not respond to changes in their husbands wages however assortative mating implies that wage changes of husbands and wives are correlated and so family earnings inequality still grew during the decade of the 1980s

prescribing product upgrades prices and production levels over time in a stochastic environment abstract competitive pressures cause the price of high technology products to erode over time the purpose of this paper is to describe a decision support tool to maximize profit by prescribing three related decisions product upgrading pricing and production levels a stochastic dynamic programming dp model prescribes when to upgrade a product and what new technologies to incorporate to maintain product competitiveness and profit margins it deals with the two major sources of risk demand and the lead time required to complete an upgrade the objective of the dp model is to maximize expected profit over a given planning horizon decision variables prescribe which alternative upgrades to implement and when pricing and production levels benchmarking computational tests are described along with an example demonstrating model application managers can use this dp model to coordinate decisions related to product upgrading pricing and operations management to better meet business objectives

quality improvement vs advertising support which strategy works better for a manufacturer abstract we consider a marketing channel with a single manufacturer and a single retailer where both advertising and quality improvement contribute to the build up of goodwill in a non coop scenario the retailer controls the advertising efforts while the manufacturer controls the quality improvements and wholesale price although improving quality positively contributes to goodwill it also increases the production cost thereby reducing the manufacturer s profit in a coop scenario the manufacturer supports the retailer s advertising while decreasing his investments in quality we investigate the conditions under which a coop program is beneficial when such a trade off occurs our results demonstrate that only when advertising significantly contributes to goodwill the manufacturer has an incentive to cooperate and a coop program turns out to be pareto improving conversely the retailer is always better off with a coop program moreover the channel is operational and marketing driven when quality effectiveness is high independent of advertising effectiveness or when both quality and advertising effectiveness are large in all other cases the channel is marketing driven

marketing production coordination in channels of distribution abstract in this paper we analyze the effects of functional horizontal decentralization by a channel member on the performance of an industrial channel of distribution we use the model of eliashberg j steinberg r 1987 management science 33 981 1000 which describes a channel of distribution consisting of a manufacturer and a value adding distributor we allow the distributor to decentralize decision making between his marketing and production functions our results show that functional decentralization at the distributor level increases the price sensitivity of the distributor concerning the price he faces from the manufacturer causes a shift in the distributor s demand curve increases the distributor s inventory activities in terms of both quantity and time frame and under certain conditions increases the manufacturer s inventory as expected the decentralized distributor has a less coordinated pricing policy vis a vis the production policy using numerical means we show that functional decentralization can improve the overall channel profitability i e for both manufacturer and distributor this counter intuitive result suggests that in our non repeated perfect information game setting functional decentralization can yield a pareto dominant equilibrium outcome where both the distributor and manufacturer are better off even though it is only the distributor who is changing his organizational decision making

the dynamics of price quality and productivity improvement decisions abstract although quality has received significant attention during the last decades and its economic benefits are beyond any doubt lots of questions have remained unanswered as to how much when and in what to invest to maintain sustainable competitive advantage a model is introduced here to guide a firm in addressing these questions the firm produces a single product and operates in a market where monopolistic competition is effective demand for the product in the industry depends on both price and performance quality increasing productivity knowledge decreases unit production cost but demand for the company s product decreases over time as competitors will be able to offer products with similar performance productivity and quality knowledge can be developed through induced and autonomous learning in order to strengthen company position the paper provides an optimal control formulation of the problem and develops necessary conditions for optimality and characterizes the dynamics of optimal price quality and investment decisions

the impact of dynamic pricing on the economic order decision this paper analyzes the impact of dynamic pricing on the single product economic order decision of a monopolist retailer items are procured from an external supplier according to the economic order quantity eoq model and are sold to customers on a single market without competition following the simple monopolist pricing problem coordinated decision making of optimal pricing and ordering is influenced by operating costs including ordering and inventory holding costs and the demand rate obtained from a price response function the retailer is allowed to vary the selling price either in a fixed number of discrete points in time or continuously while constant and continuous pricing have received much attention in the literature problems with a limited number of price changes are rather rare this paper illustrates the benefit of dynamically changing prices to achieve operational efficiency in the eoq model that is to trigger high demand rates when inventories are high we provide structural properties of the optimal time instants when the price should be changed taking into account costs for changes in price it provides numerical guidance on number timing and size of price changes during an order cycle numerical examples show that the benefits of dynamic pricing in an eoq framework can be achieved with only a few price changes and that products being unprofitable under static pricing may become profitable under dynamic pricing

new estimates of labour supply elasticities for married women in canada 1996 2005 in this article we estimate income and substitution labour supply and participation elasticities for canadian married women using data from the survey of labour and income dynamics 1996 2005 we use the canadian tax and credit simulator ctacs and detailed information on the structure of income at the household level to compute the marginal tax rates faced by each individual we then use these marginal tax rates to compute net own wage spouse wage and nonlabour income we show how the magnitude of the estimated elasticities varies depending on whether net or gross wages and income are used in the estimation procedure and quantify biases caused by using average tax rates instead of marginal tax rates finally because marginal tax rates vary significantly over the sample we use quantile regressions to compare elasticities at different points of the hours distribution overall our results show that public policies now have on average less scope for influencing hours of work than 10 years ago howev

simultaneous and dynamic price production inventory and capacity decisions abstract this paper concerns a profit maximizing firm that derives the optimal price for its output level of output level of inventory and composition of productive capacity over time first it is assumed that capacity may be acquired to either increase or replace the firm s existing productive capacity second it is assumed that the acquisition of new capacity causes a reduction in the firm s production cost lastly it is assumed that demand which is expressed as a function of time and price must be met either from current production or from inventory clearly the level of production cannot exceed the productive capacity at any time the optimal control model formulated requires the solution of a two point boundary value problem so that a discrete approximation numerical procedure is presented numerical results indicate that due to anticipated technological improvement the acquisition of new capacity is postponed and occurs in greater magnitude later in the planning horizon in addition as a result of upgrading productive capacity through the acquisition of new technology numerical results show that a firm lowers its per unit production cost and thereby reduces the optimal price charged for output which increases demand furthermore since the level of capacity is increased due to the purchase of new technology less reliance on inventory is necessary to meet peak demand lastly it is shown that a larger firm optimally acquires a greater level of new capacity over the planning horizon to reduce its operating costs and thereby further its competitive advantage

interactions between members of a marketing production channel under seasonal demand abstract key decisions in a marketing production channel faced with a seasonal demand include production and pricing decisions for the manufacturer and processing and pricing decisions for the retailer in such situations a variety of contracts are possible including contracts under which the manufacturer charges a constant price throughout the season or the retailer processes at a constant rate throughout the season also possible are channel structures in which the manufacturer and retailer cooperate to make decisions jointly the main objective of the present paper is to compare optimal policies under all the situations described above we show that having a constant manufacturer s price or a constant processing rate does not have a significant impact upon the retailer s price or inventory decisions however if the demand is not highly seasonal a constant processing rate contract will result in higher production and processing rates and a lower manufacturer s price compared to a constant manufacturer s price contract also a centralized channel involving joint decision making will lead to a lower price at the retail level and higher production and processing rates hence issues such as channel coordination and contracts between manufacturers and retailers which have received significant attention in the marketing literature have implications for the production area as well

a synthetic cohort analysis of female labour supply the case of thailand abstractthis study analyzes trends and patterns in employment hours worked and women s wages for thai women and relations among these variables in models of female labour supply labour supply behaviour of thai women is investigated with synthetic cohort data defined by age year of birth and level of educational attainment constructed from annual labour force surveys from 1985 to 2004 according to pseudo panel estimates wage increases lead to a reduction in hours worked but also an increase in the employment population ratio with elasticity estimates that are robust across a variety of specifications estimates based on disaggregation by marital status show that marriage provides protection against wage decreases allowing married women greater choice between hours of work and other household activities alternative disaggregations find that younger cohorts of women and those with the highest education show the greatest positive response of the employment rate to wage changes leading to a fut

monopolist pricing with dynamic demand and production cost this paper deals with pricing of a new product over time by a monopolist who maximizes the discounted profit stream the interdependency of cost and demand on cumulative production makes the problem inherently dynamic cost is assumed to be declining with cumulative production learning curve effect while demand is a function of price and cumulative sales representing word of mouth and saturation effects the paper addresses this problem in a general framework that includes several previous results as special cases and provides new insights in other situations while the learning curve and word of mouth effect cause prices to be lower than the price that maximizes immediate revenues the saturation factor has the opposite effect the price path over time is affected by these factors and the interest rate we characterize the price path under several different situations and interpret the results for policy guidelines