frictionless commerce a comparison of internet and conventional retailers there have been many claims that the internet represents a new nearly frictionless market our research empirically analyzes the characteristics of the internet as a channel for two categories of homogeneous products books and cds using a data set of over 8 500 price observations collected over a period of 15 months we compare pricing behavior at 41 internet and conventional retail outlets we find that prices on the internet are 9 16 lower than prices in conventional outlets depending on whether taxes shipping and shopping costs are included in the price additionally we find that internet retailers price adjustments over time are up to 100 times smaller than conventional retailers price adjustments presumably reflecting lower menu costs in internet channels we also find that levels of price dispersion depend importantly on the measures employed when we compare the prices posted by different internet retailers we find substantial dispersion internet retailer prices differ by an average of 33 for books and 25 for cds however when we weight these prices by proxies for market share we find dispersion is lower in internet channels than in conventional channels reflecting the dominance of certain heavily branded retailers we conclude that while there is lower friction in many dimensions of internet competition branding awareness and trust remain important sources of heterogeneity among internet retailers

expanding demand through price advertisement abstract retail stores frequently advertise prices when consumer search is costly advertising low prices expands the number of consumers who visit and buy we show that this demand enhancement may offset a retailer s loss in margins from the low price making advertisement desirable we further show that a multi product monopolist may choose to advertise low prices only for select products even when advertised and non advertised products are substitutes for duopolist retailers at a common location an equilibrium exists in which for some range of advertising costs one store advertises and the other free rides on its competitor

buyer search costs and endogenous product design buyer search costs for price are changing in many markets through a model of buyer and seller behavior i consider the effects of changing search costs on prices both when product differentiation is fixed and when it is endogenously determined in equilibrium if firms cannot change product design lower buyer search costs for price lead to increased price competition however if product design is a decision variable lower search costs for price may also lead to higher product differentiation which decreases price competition in this case the overall effect of lower buyer search costs for price may even be higher prices lower social welfare and higher industry profits the result is especially interesting because recent technological changes such as internet shopping can affect the market structure through lowering buyer search costs

the effects of environmental regulation on technology diffusion the case of chlorine manufacturing we use a hazard model to estimate the effect of environmental regulation on the diffusion of membrane cell production technology in the chlorine manufacturing industry we estimate the effect of regulation on both the adoption of the membrane technology at existing plants and on the exit of existing plants using older technologies we find that environmental regulation did affect the diffusion of the cleaner technology in the chlorine industry however it did so not by encouraging the adoption of membrane cells by existing facilities but by reducing the demand for chlorine and hence encouraging the shutdown of facilities using the environmentally inferior options this abstract was borrowed from another version of this item

productivity growth catching up and uncertainty in china s meat trade abstract the potential role of china as a major importer of agricultural products and the likely impact on world markets has been a topic of considerable debate over the past decade in this paper we focus specifically on the livestock sector and develop a detailed analysis of productivity growth in china s pig and poultry production along with projections of china s likely meat trade in the year 2010 we use a general equilibrium model which permits us to explore the sensitivity of our projections to macro economic uncertainty as well as uncertainty in livestock productivity growth rates our analysis shows that china s net trade position is very sensitive to both of these factors with high livestock productivity growth and a slow down in the rest of the economy china could be a substantial competitor in export markets by 2010 on the other hand slow productivity growth in livestock production coupled with a rapidly growing macro economy could transform china into a major market for future meat exports

equilibrium characteristics of multinomial logit market share models previous research suggests that a multinomial logit model of market share can be used in optimization or equilibrium analyses of marketing decision making however there are significant problems w

multinomial logit market share models equilibrium characteristics and strategic implications we specify and analyze the conditions under which the mnl market share models are appropriate for equilibrium analysis our results show that a linear price response function as is often used in empirical research in conjunction with the typical concavity assumed in a large range of marketing response functions would yield an interior equilibrium solution we then consider the optimal reactions on pricing and marketing spending to entry and potential market expansion in the context of the mnl models we demonstrate that the entry of a new brand evokes a decrease in the equilibrium prices of the existing brands as a defensive reaction this is true in both an expanding market as well as a fixed market however while new entry into a fixed market would trigger the incumbents to lower the marketing expenditure we show that firms tend to raise marketing activities as they experience market expansion consequently there exist distinct possibilities that marketing efforts for the existing brands increase in view of entry in an expanding market further managerial and marketing implications for endogeneity of the number of firms are explored

on the effects of consumer search and firm entry in a multiproduct competitive market this paper studies a model in which consumers search among multiple competing firms for products that match their preferences at a reasonable price we focus on how easier search possibly due to the adoption of search facilitating technologies such as the internet influences equilibrium prices assortments firm profits and consumer welfare conventional wisdom suggests that easier search creates a competition intensifying effect that puts pressure on firms to lower their prices and reduce assortments however in our model we demonstrate that search also exhibits a market expansion effect that encourages firms to expand their assortment easier search means that each firm is searched by more consumers because of broader assortments consumers are more likely to find products that better match their ideal preferences improving the efficiency of the market in fact we demonstrate that the market expansion effect can even dominate the competition intensifying effect potentially leading to higher prices broader assortments more profits and expanded welfare

the structure of equilibria in market share attraction models a market share attraction model of competitive effort allocation by two firms is formulated as a constant sum two person game the dependence of optimal competitive effort allocations on factors such as gross profit margins relative effectiveness of effort and attraction elasticity of effort is studied two versions of the model are developed in the first version effort budgets of both competitors are exogenously fixed in the second the competitors each choose both budget levels and allocations in each version of the model an important function of the parameters called the competitive advantage ratio indicates when it is optimal to either increase or decrease effort allocated in a market in response to changes in various measures of effectiveness implications of differences in the cost associated with each competitor s budget on equilibrium allocations are derived

do consumers search for the highest price oligopoly equilibrium and monopoly optimum in differentiated products markets we develop a model of search among substitutes for the best combination of commodity variant and price in which the structure of search costs is manipulable by the suppliers of these variants e g by joining an existing market or opening a new one we analyze the subgame perfect equilibria arising in a multistage game involving specialized firms choice of entry variant and price and we compare them to a multiproduct monopolist s optimal choice we show that equilibrium prices increase in the number of substitutes sold in one market and that in the situation considered here monopoly increases welfare

product and price competition with satiation effects consumers become satiated with a product when purchasing too much too quickly how much is too much and how quickly is too quickly depends on the characteristics of the product relative to the time interval between consumption periods knowing that consumers allocate their budget to products that generate less satiation effects retailers should then choose to sell products that induce minimal satiation but usually this is operationally more costly to study this trade off we provide an analytical model based on utility theory that relates customer consumption to price and satiation in the context of multiple competing retailers we determine the purchasing pattern over time and provide an explicit expression to determine the consumption level in steady state we derive market shares and show that they take the form of an attraction model in which the attractiveness depends on price and product satiation we use this to analyze the competition between firms that maximize long term average profit we characterize the equilibrium under three scenarios i price only competition ii product only competition and iii price and product competition the results reveal the interplay between a key marketing lever price and the firm s ability to offer products that generate less satiation in particular we show that when a firm becomes more efficient at reducing satiation its competitor may benefit if competition is on product only but not if it is on price and product we also find that when satiation effects are not managed a firm s profit may be significantly reduced while a strategic competitor can largely benefit this paper was accepted by yossi aviv operations management

the exponomial choice model a new alternative for assortment and price optimization we investigate the use of a canonical version of a discrete choice model due to daganzo 1979 daganzo c 1979 multinomial probit the theory and its application to demand forecasting academic press new york in optimal pricing and assortment planning in contrast to multinomial and nested logit the prevailing choice models used for optimizing prices and assortments this model assumes a negatively skewed distribution of consumer utilities an assumption we motivate by conceptual arguments as well as published work the choice probabilities in this model can be derived in closed form as an exponomial a linear function of exponential terms the pricing and assortment planning insights we obtain from the exponomial choice ec model differ from the literature in two important ways first the ec model allows variable markups in optimal prices that increase with expected utilities second when prices are exogenous the optimal assortment may exhibit leapfrogging in prices i e a product can be s

pass through and consumer search an empirical analysis retail price pass through is one of the most important issues facing manufacturers of consumer packaged goods although retailers tend to pass higher wholesale prices through to consumers quickly and completely they often do not pass on trade promotions currently asymmetric pass through is commonly thought to result from retailers exercise of market power alternatively it may be because of consumer search behavior and retailers competitive response we test this theory using a panel threshold asymmetric error correction model applied to wholesale and retail scanner data for ready to eat cereal for a number of retailers in the los angeles metropolitan market we find that consumer search behavior contributes significantly to imperfect pass through by allowing pass through to depend on market power and consumer search costs we find results that are contrary to the conventional wisdom namely market power causes retail prices to fall quickly and rise slowly whereas consumer search behavior causes retail prices to rise quickly and fall slowly precisely the rockets and feathers phenomenon

optimal pricing of correlated product options under the paired combinatorial logit model in this paper we study price optimization with price demand relationships captured by the paired combinatorial logit pcl model which overcomes restrictions of the well studied multinomial logit mnl and nested logit nl models the pcl model allows for choice correlation and like the nl model includes the mnl model as a special case compared to the nl models the pcl model does not restrict the sequence of the choice structure and allows for different covariances among all pairs of choices this additional flexibility in structure enables a more accurate representation of some choice settings and broadens its empirical applications hence it is of both theoretical and practical interests to extend the normative studies on the mnl and nl models to the pcl model and examine the pricing problem under this model due to cross nesting of choice alternatives the pricing problem under the pcl model poses a greater challenge than the mnl and nl models however using the concept of p matrix we are abl

measuring the frictional costs of online transactions the case of a name your own price channel we study the offers submitted by consumers to a large name your own price nyop online retailer a distinctive feature of this retailer is that it allows consumers to repeatedly submit offers on one and the same product while consumers could identify the threshold price the minimum price for which the retailer is willing to sell by incrementing their offer in small steps in each consecutive round such a strategy would require them to go through many additional online transactions we define frictional cost as the disutility that the consumer experiences when conducting an online transaction such as submitting an offer thus in our setting consumers trade off a direct financial value lower price for frictional costs based on a consumer choice model capturing this trade off we use the observed consumer behavior to reconstruct the frictional cost parameters for the consumers in our sample we show that perhaps contrary to the general wisdom frictional costs in electronic markets are substantial with median values ranging from eur 3 54 for a portable digital music player mp3 to eur 6 08 for a personal digital assistant pda we find that consumers who have gathered experience with the nyop channel in previous transactions exhibit lower frictional costs than consumers who use the channel for the first time surprisingly sociodemographic variables do not help to explain the variation in frictional costs

network effects software provision and standardization in this paper we examine the software provision decision of software firms the provision decision by software firms determines the value and hence the market share of competing hardware technologies we show how the provision decision by software firms determines whether multiple hardware technologies are supported in equilibrium or whether there is de facto standardization with only one hardware technology supplied with software in equilibrium we show that when consumers place a high value on software variety there is a suboptimal amount of standardization by the market

product assortment in a triopolgy producers of super premium ice cream such as haagen dazs offer a smaller assortment of flavors than the producers of lesser quality ice cream examples of this phenomenon can be found in other industries as well in many industries the producers of higher quality products offer a smaller assortment of flavors colors sizes patterns textures fragrances tones styles models designs types or other options this paper explores when and why producers of super premium products should find it profitable to offer a smaller assortment than the producers of nonpremium products we derive a nash equilibrium both on prices and product assortments for a triopoly at the nash equilibrium we show that additional product quality increased consumer price sensitivity and greater assortment costs discourages product assortment we also show that a larger market potential greater competitive costs and sharper competition encourage more assortment by the super premium producer

an equilibrium analysis of defensive response to entry using a coupled response function model we determine the optimal response to competitive entry in a market characterized by a market share attraction model the response of an incumbent is limited to changes in prices advertising and distribution expenditures brand positions are assumed to be fixed we also assume that the entrant s position is chosen exogenously and that the sales potential of the market is constant after proving the existence of a unique nash equilibrium we show that the optimal response depends on the relative market share of the incumbents the response by nondominant brands with market shares less than 50 mirrors the prediction by decoupled response function models reduce price advertising and distribution spending for the dominant brand having a market share of 50 the response is to reduce price and increase marketing spending this finding explains previous empirical results that could not be addressed by the decoupled models

search and price dispersion in online grocery markets abstract consumers often purchase multiple products at a time from retailers creating multi product incentives for search in this paper we consider how product variety affects consumer search intensity and the dispersion of prices in multi product retail markets we employ online grocery pricing data from four large retailers in the uk to estimate search costs and equilibrium price dispersion for food products under circumstances where i consumers search for single products and ii consumers search for multiple products at once we compare estimates in each case between a model in which utility increases with product variety and a model in which utility is not a function of variety relative to our preferred specification with variety effects in utility we find estimates of both search cost and search frequency to be biased upwards in single product settings when variety effects are ignored however we find estimates of search costs are biased upwards while search frequency is biased downwards in multi product settings when variety effects in utility are ignored

optimal and competitive assortments with endogenous pricing under hierarchical consumer choice models this paper studies assortment planning and pricing for a product category with heterogeneous product types from two brands we model consumer choice using the nested multinomial logit framework with two different hierarchical structures a brand primary model in which consumers choose a brand first then a product type in the chosen brand and a type primary model in which consumers choose a product type first then a brand within that product type we consider a centralized regime that finds the optimal solution for the whole category and a decentralized regime that finds a competitive equilibrium between two brands we find that optimal and competitive assortments and prices have quite distinctive properties across different models specifically with the brand primary model both the optimal and the competitive assortments for each brand consist of the most popular product types from the brand with the type primary choice model the optimal and the competitive assortments for each brand may not always consist of the most popular product types of the brand instead the overall assortment in the category consists of a set of most popular product types the price of a product under the centralized regime can be characterized by a sum of a markup that is constant across all products and brands its procurement cost and its marginal operational cost implying a lower price for more popular products the markup may be different for each brand and product type under the decentralized regime implying a higher price for brands with a larger market share these properties of the assortments and prices can be used as effective guidelines for managers to identify and price the best assortments and to rule out nonoptimal assortments our results suggest that to offer the right set of products and prices category and or brand managers should create an assortment planning process that is aligned with the hierarchical choice process consumers commonly follow to make purchasing decisions this paper was accepted by pradeep chintagunta and preyas desai special issue editors this paper was accepted by pradeep chintagunta and preyas desai special issue editors

competition by choice the effect of consumer search on firm location decisions this paper relates firm location choice and consumer search firms that cluster together attract consumers by facilitating price comparison but clustering increases the intensity of local competition the author constructs a simple model which shows that firms may choose head on competition by locating together under reasonable conditions this is the only equilibrium outcome copyright 1990 by american economic association

optimal search for product information consumers often need to search for product information before making purchase decisions we consider a tractable continuous time model of gradual learning in which consumers incur search costs to learn further product information and update their expected utility of the product at each search occasion we characterize the optimal stopping rules for either purchase or no purchase as a function of search costs and of the importance informativeness of each attribute this paper also characterizes how the likelihood of purchase changes with the ex ante expected utility search costs and the importance informativeness of each attribute we discuss optimal pricing the impact of consumer search on profits and social welfare and how the seller chooses its price to strategically affect the extent of the consumers search behavior we show that lower search costs can hurt the consumer because the seller may then choose to charge higher prices discounting creates asymmetry in the purchase and no purchase search thresholds and may lead to lower prices if search occurs in equilibrium or higher prices if there is no search in equilibrium this paper also considers searching for signals of the value of the product heterogeneous importance of attributes endogenous intensity of search and social learning this paper was accepted by pradeep chintagunta marketing

quality differentiation and conditional spatial price competition among hotels abstract it is generally accepted that location is the dominant product attribute for hotels accordingly studies on price competition have often utilized fixed geographic boundaries when defining competitive sets when travelers are willing to substitute location and quality however the spatial extent of competition can depend on the hotels quality therefore it can be hypothesized that geographic boundary of price competition among hotels is conditional on quality differentiation through an empirical analysis based on two stage least squares modified to test for spatial price competition the present study finds that hotels compete with more distant neighbors of similar quality than those who are quality differentiated in addition the results also suggest possibility of cooperation among neighboring hotels similar in quality implications and suggestions are presented along with the findings of the study which is expected to contribute to the literature by suggesting a new perspective on the relationship between quality differentiation and price competition among hotels

when and how is the internet likely to decrease price competition conventional wisdom seems to claim that by lowering the cost of distribution and by making search easier for consumer the introduction of the internet is likely to intensify price competition this paper intends to challenge this view by asking when and how is the internet likely to decrease the level of price competition between firms to answer this question we develop an analytic model with the following characteristics on the demand side consumers need to gather information on two types of product attributes digital attributes which can be communicated on the web at very low cost and nondigital attributes for which physical inspection of the product is necessary consumers choose between two brands but are familiar with the nondigital attributes of only the brand purchased on the last purchase occasion on the supply side firms use traditional stores and the internet to inform consumers about their products attributes and to sell their products in this setup we show that the impact of the internet on competition will be radically different depending on the relative importance of parameters describing the relevant shopping and distribution context specifically we find that the introduction of the internet might lead to monopoly pricing when 1 the proportion of internet users is high enough 2 when nondigital attributes are relevant but not overwhelming 3 when consumers have a more favorable prior about the brand they currently own and 4 when the purchase situation can be characterized by destination shopping more surprising we also show that in such cases the use of the internet not only leads to higher prices but can also discourage consumers from engaging in search as such an important message of the paper is that under some conditions the internet might represent an opportunity for firms to leverage their brand loyalty and increase their profits the intuition behind our results is the following the internet allows consumers to evaluate digital attributes easily i e without visiting the stores however nondigital attributes can only be evaluated through physical presence as such for goods where both types of attributes are important the introduction of the net changes the effective cost of search for consumers without the internet the cost of search is the cost of visiting more than one store with the introduction of the net however nonsearching consumers do not have to undertake the shopping trip at all because they can order products on the net thus in the presence of the internet the cost of search is related to the cost of undertaking the entire shopping trip in the case of destination shopping i e when the fixed cost of undertaking the shopping trip is higher than the cost of visiting an additional store the presence of the internet creates higher effective search costs for consumers given this shift of paradigm in search costs due to the internet consumers may not take the risk of searching for products with better nondigital attributes but instead remain with the product they are familiar with this results in increased consumer loyalty which induces firms to increase their prices our results have important managerial implications first they provide guidelines for firms on when i e for which product categories they should consider expanding their distribution network to the internet in this respect an important additional insight of the paper is that the internet can lower price competition and lead to reduced consumer search even if it is more expensive than the traditional distribution channel this can easily be the case if distribution through the internet represents additional costs such as the costs associated with shipping and handling and return policies second the paper also provides guidelines on how to plan the firm s internet strategy interestingly the results suggest that with the general availability of the internet the role of stores might actually become more important while we do not explicitly model a dynamic market our findings together with klemperer s 1987 results suggest that stores might have a key role in consumer acquisition while the internet can help leverage the acquired customer base through demand fulfillment this might imply that for certain product categories firms should actually allocate additional resources to improve their in store environment when considering the internet as a complementary distribution channel

consideration set formation with multiproduct firms the case of within firm and across firm evaluation costs we consider a theoretical setting in which firms carry multiple products and consumers incur evaluation costs not only across firms but also within firms consumers judiciously decide the number of firms to include in their consideration sets as well as how many products from those firms this decision depends on the relative trade offs of evaluating an additional product and whether it is from a firm already included in the consideration set or from an entirely new firm the composition of consumers consideration set affects how firms compete in prices and in the number of products to offer contrary to previous literature we find that firm differentiation can reduce firms product lines and within firm evaluation costs have either a positive or a negative effect on firms prices interestingly we show that within firm evaluation costs and across firm evaluation costs are different constructs the number of products firms offer in equilibrium can exceed the socially optimal level if within firm evalua

rural reforms and agricultural growth in china this paper employs province level panel data to assess the contributions of decollectivization price adjustments and other reforms to china s agricultural growth in the reform period decollectivization is found to improve total factor productivity and to account for about half of the output growth during 1978 84 the adjustment in state procurement prices also contributed positively to output growth its impact came mainly from the responses in input use the effect of other market related reforms on productivity and output growth was very small reasons for slowdown in agricultural growth after 1984 are also analyzed copyright 1992 by american economic association

equilibrium price dispersion in retail markets for prescription drugs this study seeks to establish the empirical importance of price dispersion due to costly consumer search by examining retail prices for prescription drugs posted prices in two geographically distinct markets are shown to vary considerably across pharmacies within the same market even after one controls for variation due to pharmacy differences pharmacy heterogeneity accounts for at most one third of the observed price dispersion the empirical analysis hinges on the observation that consumers incentives to price shop depend on characteristics of the drug therapy cross sectional patterns in price distributions across drugs are consistent with the predictions of a search model prices for repeatedly purchased prescriptions for which the expected benefits of search are highest exhibit significant reductions in both dispersion and price cost margins

the need for improved financial reporting of a developing country energy utility abstract some consideration has been given to regulatory and institutional reforms to facilitate sustainable development in electricity usage in papua new guinea but little attention has been paid to bringing about full compliance of financial reporting expectations of the country s main energy utility examining documentary evidence of the audit reports of the auditor general s office of papua new guinea this study considers the financial reporting compliance of png power for the period 2007 2013 and the means by which compliant reporting may be improved the results of the study reveal that the financial statements of png power are late and receive disclaimers of opinion from the auditor general s office which suggest that png power s stakeholders are not receiving accurate and reliable financial information to make informed decisions about sustainable development of electricity usage and planning in papua new guinea the study reveals that it would take little resources to improve png power s reporting which in turn could enhance national energy policy decision making and energy utility accountability

imperfect competition and reputational commitment abstract competition can both aid and hinder reputational commitments for quality these are self sustaining depending on future profits after maintaining or deviating from the commitment and on current costs of sustaining it competition can affect these three elements at different rates

liberalization endogenous institutions and growth a comparative analysis of agricultural reforms in africa asia and europe thirty years ago a vast share of low and middle income countries was heavily state controlled the liberalizations of the 1980s and 1990s had greatly different effects on growth in countries in africa asia and europe a comparative framework is used to document these differences and a model is developed to formally analyze how liberalization affects production and income distribution when the institutions that govern production and exchange are also affected hypotheses are derived for how endogenous institutional adjustments affect the growth response to liberalization these insights motivate a series of explanations for the differences in performance across regions and commodities following liberalization

pricing product diversity and search costs a bertrand chamberlin diamond model we study price competition in the presence of search costs and product differentiation the limit cases of the model are the bertrand paradox the diamond paradox and chamberlinian monopolistic competition market prices rise with search costs and decrease with the number of firms prices may initially fall with the degree of product differentiation because more diversity leads to more search and more competition equilibrium diversity rises with search costs while the optimum level falls so entry is excessive the market failure is most pronounced for low preference for variety and high search costs

success and failure of reform insights from the transition of agriculture this paper analyzes the linkages between the reform strategies in transition countries and economic performance the authors focus on agriculture because of the sharpness of the policy changes fundamental differences among countries and relative simplicity of agricultural relationships the authors document post reform performance in the transition countries of asia and europe the authors show how a pricing reform and subsidy reductions b land rights reform and policies that affect farm restructuring and c the presence institutions that facilitate exchange either markets or market substitutes affect output and productivity the paper ends with general lessons on reforms and transition

lowering customer evaluation costs product differentiation and price competition when match uncertainty is resolved via costly evaluation the first product sampled by a customer is more likely to make the sale this prompts firms to lower their products evaluation costs to attract customers to sample their products first such efforts by firms are called customer learning investment cli when product quality is freely observable but horizontal match is not we examine how cli choices interact with quality and price competition in a duopoly cli has a competition effect in that a higher cli of a firm increases its demand but decreases that of its rivals in the market covered duopoly both qualities will decrease increase when the high end low end firm invests more in customer learning and remain unchanged when they invest equally relative to when neither firm invests we further show that the firm with a higher relative production efficiency invests more in customer learning than the competitor in the market not covered duopoly cli by the low end firm also creates a market

search design and market structure the internet has made consumer search easier with consequences for prices industry structure and the kinds of products oered we explore these conse quences in a rich but tractable model that allows for strategic design choices a polarized market structure results where some rms choose designs aimed at broad based audiences while others target narrow niches such an industry structure can arise even when all rms and consumers are ex ante identical we analyze the eect of reduced search costs and nd results consistent with the reported prevalence of niche goods and the long tail and superstar phe nomena in particular the model suggests that long tail eects arise when there is a wide range of potential designs relative to vertical heterogeneity among rms

asset life and pricing the use of electricity transmission infrastructure in chile abstract beyond the different approaches to set regulated prices for the use of infrastructure a key parameter to determine regulated tariffs is the concept of asset life and how it changes with changes in the economic and regulatory context which determines the optimal infrastructure investment and replacement policies in this paper we look at the effects that changes in demand the presence of substitutes and complements the regulatory framework both a pro or an anticompetitive framework scale economies and the investment planning horizon have on the economic service life of an asset and the tariffs for its use we find that as the electric industry becomes more competitive a negative effect on the economic service life of electric electricity transmission should be expected also numerical experiments illustrate an inverse relation between scale economies on investment and the esl of electricity transmission infrastructure further we look at the biases on optimal investment that happen when optimal plans do not observe the life cycle of the investments and the esl of the equipment as well as the inconsistency and biases on optimal investment and replacement policies that might result when the social planner optimal investment plan lacks of a long term commitment

product differentiation search costs and competition in the mutual fund industry a case study of s p 500 index funds we investigate the role that non portfolio fund differentiation and information search frictions play in creating two salient features of the mutual fund industry the large number of funds and the sizeable dispersion in fund fees in a case study we find that despite the financial homogeneity of s p 500 index funds this sector exhibits the fund proliferation and fee dispersion observed in the broader industry we show how extra portfolio mechanisms explain these features these mechanisms also suggest an explanation for the puzzling late 1990s shift in sector assets to more expensive and often newly entered funds an influx of highinformation cost novice investors

total factor productivity change in china s farming sector 1952 1989 a crucial problem in economic development is choosing institutions that are relatively efficient in resource allocation and conducive to growth however institutional innovations usually take time and it is often difficult to isolate these effects from the effects of noninstitutional factors modern china is one of the few exceptions it offers a rich experience in dramatic institutional changes after 1949 a smallholder system was experimented with immediately after the land reform this was quickly followed by various forms of collectivization since 1979 the household responsibility system hrs has gradually replaced the commune system thus china provides a unique opportunity for a comparative study of these different rural institutions in terms of the total factor productivity index tfpi this index measures the change in output relative to the change in inputs the examination of the tfpi also has policy implications the apparent plateau in grain production and the slow growth in other crop production from 1985 to 1989 constitute a sharp contrast to the period 1979 84 which witnessed rapid growth in both grain and economic crop production in china public ownership is favored by orthodox ideology and noneconomic factors often play an important role in economic life 2 in facing slower growth in crop production whether the hrs should or should not be the long term rural institution has become a sensitive question again and has kindled a heated debate within china in this study i will examine the performance of the successive rural institutions in china in terms of changes in the tfpi over the period 1952 89 using 1989 as the final year of my study the most important finding of this study is that the hrs showed a clear advan

strategic implications of market share attraction models market share attraction models which specify that a firm s market share is equal to the ratio of its attraction to the total attraction for all firms have received increasing attention in recent years however there has been little research investigating the practical implications of such models this paper presents a game theoretic analysis of such a model and deduces the strategic implications of a nash equilibrium solution to the model it is shown that these implications are consistent with previous empirical research in marketing and business policy

price dispersion and differentiation in online travel an empirical investigation previous research has examined whether price dispersion exists in theoretically highly efficient internet markets however much of the previous work has been focused on industries with low cost and undifferentiated products in this paper we examine the presence of price dispersion and product differentiation using data on the airline ticket offerings of online travel agents otas we find that different otas offer tickets with substantially different prices and characteristics when given the same customer request some of this variation appears to be due to product differentiation different otas specialize by systematically offering different trade offs between ticket price and ticket quality minimizing the number of connections matching requested departure and return time however even after accounting for differences in ticket quality ticket prices vary by as much as 18 across otas in addition otas return tickets that are strictly inferior to the ticket offered by another ota for the same request between 2 2 and 28 of the time overall this suggests the presence of both price dispersion and product differentiation in the online travel market

agrifood industry transformation and small farmers in developing countries summary this article introduces this special issue on the rapid transformation of the agrifood industry in developing countries and its effects on small farmers we review the literature from the late 1980s to the present and find evidence first of food processing then retail transformation and mixed evidence of impacts on small farmers both inclusion particularly with resource providing contracts and exclusion sometimes from scale constraint sometimes from inadequate non land assets the special issue papers contribute to the debate by confirming the mix of cases of inclusion and exclusion the cases are main in horticulture and dairy key hopes for smallholder development

dynamic pricing and inventory management under inventory dependent demand we analyze a finite horizon periodic review joint pricing and inventory management model for a firm that replenishes and sells a product under the scarcity effect of inventory the demand distribution in each period depends negatively on the sales price and customer accessible inventory level at the beginning of the period the firm can withhold or dispose of its on hand inventory to deal with the scarcity effect we show that a customer accessible inventory dependent order up to dispose down to display up to list price policy is optimal moreover the optimal order up to display up to and list price levels are decreasing in the customer accessible inventory level when the scarcity effect of inventory is sufficiently strong the firm should display no positive inventory and deliberately make every customer wait the analysis of two important special cases wherein the firm cannot withhold or dispose of inventory delivers sharper insights showing that the inventory dependent demand drives both optimal prices and order up to levels down in addition we demonstrate that an increase in the operational flexibility e g a higher salvage value or the inventory withholding opportunity mitigates the demand loss caused by high excess inventory and increases the optimal order up to levels and sales prices we also generalize our model by incorporating responsive inventory reallocation after demand realizes finally we perform extensive numerical studies to demonstrate that both the profit loss of ignoring the scarcity effect and the value of dynamic pricing under the scarcity effect are significant

non farm activity household expenditure and poverty reduction in rural vietnam 2002 2008 summary diversifying into non farm activities has been suggested as an effective way out of poverty for rural households in developing countries using the vietnamese household living standards surveys of 2002 2004 2006 and 2008 we test this claim and investigate the effect of non farm sector involvement on poverty and expenditure growth our endogeneity corrected estimates show that an additional household member involved with non farm activity reduces the probability of poverty by 7 12 and increases the household expenditure by 14 over a two year period our findings also indicate that non farm involvement reduces the hours worked on farm but not the household agricultural income

dynamics of price regulation we study the dynamics of price regulation for an industry adjusting to exogenous technological progress first we characterize the optimal capacity path and replacement cycles in a neoclassical investment model second we show that naive rate ofreturn regulation which ignores components of economic depreciation eventually results in a deficient level of capacity due to excessively high retail prices burdened by the need to recover the underdepreciated costs of historical investments third we explain how price cap regulation leads to more efficient capital replacement decisions compared to naive rate of return regulation and we show how finite price cap horizons distort capital replacement finally we interpret recent regulatory reforms in telecommunications markets

responsiveness flexibility and market liberalization in china s agriculture been at most only limited gains from market liberalization if one were to take the findings of this admittedly scant literature seriously it would appear as if there is at most only a relatively small impact from market reforms in china we believe there are three possible but only one plausible explanations for the findings first if market liberalization actually contributes little to no growth or increases in output or incomes this would of course in part explain why economies that lead reform with market liberalization do not experience significant gains theory and the experiences of other economies in other settings however would argue against such an interpretation second it could be that china s agricultural market liberalization has just proceeded so slowly that it is still too early for output to have been positively affected by market liberalization however as seen above the record on the market expansion and the observations of many researchers would not support this view

entry deterrence by non horizontal merger we study when and how pure non horizontal mergers whether cross product or vertical can deter new entry organizational mergers implicitly commit firms to more aggressive price competition because heightened competition deters entry mergers can occur in equilibrium even when absent entry considerations they do not we show that in order to prevent a flood of entrants mergers arise even when a marginal merger costs incumbent firms more than does a marginal entrant

how to reform a planned economy lessons from china the countries of eastern europe and the former soviet union have been flooded with advice from the west on how to liberalize their planned econo mies this advice is unfortunately offered in an empirical vacuum no one knows how these econo mies will react to the proposed liberalization meas ures there exists however a neglected source of information china offers a long time series of data over a decade s worth on the effects of reforms on a planned economy china s reforms were gradual but their cumulative effect has been large and they have been remarkably successful china s experiments provide some practical les sons on what kinds of reforms can work elsewhere the dominant school of thought among economists favours the big bang policy of reforming quickly and according to a comprehensive plan partial reforms in this view are useless they will be negated by the remnants of the planning system the proponents of big bang reform have been influential with poland czechoslovakia and rus sia announcing plans for a rapid transition to capi talism