David Orden

Pakistan’s cotton and textile economy: intersectoral linkages and effects on rural (2009)

Caesar B. Cororaton, David Orden, David Orden Rev, David Ii. International

Sections of this material may be reproduced for personal and not-for-profit use without the express written permission of but with acknowledgment to IFPRI. To reproduce material contained herein for...

2.3 Single Country Trade Modeling.................................................................... 10 (2009)

Caesar Cororaton, Ashok Gulati, Mc Calla, Simon Mevel, David Orden, Alberto Valdes

IFPRI on September 16 th, 2005 for their helpful comments and suggestions. Special thanks to Alex Mc Calla for very helpful and interesting discussions. The usual disclaimer applies.

Balanced lines in two-coloured point sets (2009)

Orden, David, Ramos, Pedro, Salazar, Gelasio

Let $B$ and $R$ be point sets (of {\em blue} and {\em red} points, respectively) in the plane, such that $P:=B\cup R$ is in general position, and $|P|$ is even. A line $\ell$ is {\em balanced} if it...

The number of generalized balanced lines (2009)

Orden, David, Ramos, Pedro, Salazar, Gelasio

Let $S$ be a set of $r$ red points and $b=r+2d$ blue points in general position in the plane, with $d\geq 0$. A line $\ell$ determined by them is said to be balanced if in each open half-plane...

Just-In-Time Scheduling for Loop-based Speculative Parallelization (2009)

Diego R. Llanos, David Orden

Scheduling for speculative parallelization is a problem that remained unsolved despite its importance. Simple methods such as Fixed-Size Chunking (FSC) need several ‘dry-runs ’ before an...

Flip Graphs of Degree-Bounded (Pseudo-)Triangulations (2009)

Aichholzer, Oswin, Hackl, Thomas, Orden, David, Ramos, Pedro, Rote, Günter, Schulz, André, ...

We study flip graphs of (pseudo-)triangulations whose maximum vertex degree is bounded by a constant k. In particular, we consider (pseudo-)triangulations of sets of n points in convex position in...

Geometry © 2004 Springer Science+Business Media, Inc. Non-Crossing Frameworks with Non-Crossing Reciprocals ∗ (2008)

David Orden, Günter Rote, Francisco Santos, Brigitte Servatius, Herman Servatius, Walter Whiteley

Abstract. We study non-crossing frameworks in the plane for which the classical reciprocal on the dual graph is also non-crossing. We give a complete description of the self-stresses on non-crossing...

An\'alisis de distancias temporales y espaciales entre el Lugar de La Mancha y cuatro puntos de referencia (2008)

Orden, David, Viaña, Raquel

The identity of the famous place of La Mancha appearing at the Quijote is an unknown with a history almost as long as that of the famous book by Miguel de Cervantes. This work analyzes data obtained...

Binary labelings for bipartite graphs ∗ (2008)

Stefan Felsner, Clemens Huemer, David Orden

Part of the authors introduced in [C. Huemer, S. Kappes, A binary labelling for plane Laman graphs and quadrangulations, in Proceedings of the 22nd European Workshop on Computational Geometry...

Bijections for Baxter Families and Related Objects (2008)

Felsner, Stefan, Fusy, Éric, Noy, Marc, Orden, David

The Baxter number can be written as $B_n = \sum_0^n \Theta_{k,n-k-1}$. These numbers have first appeared in the enumeration of so-called Baxter permutations; $B_n$ is the number of Baxter...

New scheduling strategies for randomized incremental algorithms in the context of speculative parallelization (2008)

Diego R. Llanos, David Orden, Belén Palop

Abstract—In this work, we address the problem of scheduling loops with dependences in the context of speculative parallelization. We show that the scheduling alternatives are highly influenced by...

New results on lower bounds for the number of (at most k)-facets (2008)

Aichholzer, Oswin, García, Jesús, Orden, David, Ramos, Pedro

In this paper we present three different results dealing with the number of $(\leq k)$-facets of a set of points: 1. We give structural properties of sets in the plane that achieve the optimal lower...

AUTHORS (2008)

David Blandford, David Orden, David Bl, The Pensylvania

agricultural research centers that receive principal funding from governments, private foundations, and international and regional organizations, most of which are members of the Consultative Group...

AUTHORS (2008)

Caesar B. Cororaton, Abdul Salam, Zafar Altaf, David Orden, Reno Dewina, Nicholas Minot, ...

agricultural research centers that receive principal funding from governments, private foundations, and international and regional organizations, most of which are members of the Consultative Group...

Notices (2008)

David Orden, Jean-christophe Bureau, Re Gohin, Loïc Guindé, Guy Millet, Antônio Salazar, ...

agricultural research centers that receive principal funding from governments, private foundations, and international and regional organizations, most of which are members of the Consultative Group...

Asymptotically Efficient Triangulations of the d-Cube (2007)

David Orden, Francisco Santos

Triangulating the regular d-cube I^d = [0, 1]^d in a "simple" way has many applications, like solving differential equations by finite element methods or calculating fixed points. See, for...

On the number of pseudo-triangulations of certain point sets (2007)

Oswin Aichholzer, David Orden, Francisco Santos, Bettina Speckmann

We pose a monotonicity conjecture on the number of pseudo-triangulations of any planar point set, and check it on two prominent families of point sets, namely the so-called double circle and double...

On the number of pseudo-triangulations of certain point sets (2007)

Oswin Aichholzer, David Orden, Francisco Santos, Bettina Speckmann

We pose a monotonicity conjecture on the number of pseudo-triangulations of any planar point set, and check it in two prominent families of point sets, namely the so-called double circle and double...

Binary Labelings for Plane Quadrangulations and their Relatives (2006)

Felsner, Stefan, Huemer, Clemens, Kappes, Sarah, Orden, David

Motivated by the bijection between Schnyder labelings of a plane triangulation and partitions of its inner edges into three trees, we look for binary labelings for quadrangulations (whose edges can...

New lower bounds for the number of $(\leq k)$-edges and the rectilinear crossing number of $K_n$ (2006)

Aichholzer, Oswin, García, Jesús, Orden, David, Ramos, Pedro

We provide a new lower bound on the number of $(\leq k)$-edges of a set of $n$ points in the plane in general position. We show that for $0 \leq k \leq\lfloor\frac{n-2}{2}\rfloor$ the number of...

On the Number of Pseudo-Triangulations of Certain Point Sets (2006)

Aichholzer, Oswin, Orden, David, Santos, Francisco, Speckmann, Bettina

We pose a monotonicity conjecture on the number of pseudo-triangulations of any planar point set, and check it on two prominent families of point sets, namely the so-called double circle and double...

New lower bounds for the number of (≤ k)-edges and the rectilinear crossing number of K_n (2006)

Oswin Aichholzer, Jesús García, David Orden, Pedro Ramos

We provide a new lower bound on the number of ( ≤ k)-edges of a set of n points in the plane in general position. We show that for 0 ≤ k ≤ ⌊ n−2 2 ⌋ the number of ( ≤ k)-edges is at...

From graphs to tensegrity structures: Geometric and symbolic approaches (2004)

De Guzmán, Miguel, Orden, David

A form-finding problem for tensegrity structures is studied; given an abstract graph, we show an algorithm to provide a necessary condition for it to be the underlying graph of a tensegrity in...

Effects of Tariffs and Sanitary Barriers . . . (2004)

Everett Peterson, David Orden

A competitive partial-equilibrium spatial model with heterogeneous goods is constructed to evaluate effects of the removal of tariffs, tariff-rate quotas, and sanitary regulations on world poultry...

Non-crossing frameworks with non-crossing reciprocals (2004)

David Orden, G Ünter Rote, Francisco Santos, Brigitte Servatius, Herman Servatius, Walter Whiteley

Abstract. We study non-crossing frameworks in the plane for which the classical reciprocal on the dual graph is also non-crossing. We give a complete description of the self-stresses on non-crossing...

Planar Minimally Rigid Graphs and Pseudo-Triangulations (2004)

Ruth Haas, David Orden, Günter Rote, Francisco Santos, Brigitte Servatius, Herman Servatius, ...

Pointed pseudo-triangulations are planar minimally rigid graphs embedded in the plane with pointed vertices (adjacent to an angle larger than π). In this paper we prove that the opposite...

Producer Support Estimates (PSEs) For Agriculture in Developing Countries (2004)

Kathleen Mullen, Dongsheng Sun, David Orden, Ashok Gulati, Kathleen Mullen, Dongsheng Sun, ...

MTID Discussion Papers contain preliminary material and research results, and are circulated prior to a full peer review in order to stimulate discussion and critical comment. It is expected that...

PRODUCER SUPPORT ESTIMATES 1985-2003 Markets, Trade, and Institutions Division (2004)

Marcelle Thomas, David Orden, Marcelle Thomas, David Orden

MTID Discussion Papers contain preliminary material and research results, and are circulated prior to a full peer review in order to stimulate discussion and critical comment. It is expected that...

Non-crossing frameworks with non-crossing reciprocals (2003)

Orden, David, Rote, Guenter, Santos, Francisco, Servatios, Brigitte, Servatius, Herman, Whiteley, Walter

We study non-crossing frameworks in the plane for which the classical reciprocal on the dual graph is also non-crossing. We give a complete description of the self-stresses on non-crossing frameworks...

Combinatorial pseudo-Triangulations (2003)

Orden, David, Santos, Francisco, Servatius, Brigitte, Servatius, Herman

We prove that a planar graph is generically rigid in the plane if and only if it can be embedded as a pseudo-triangulation. This generalizes the main result of math.CO/0307347 which treats the...

Planar Minimally Rigid Graphs and Pseudo-Triangulations (2003)

Haas, Ruth, Orden, David, Rote, Guenter, Santos, Francisco, Servatius, Brigitte, Servatius, Herman, ...

Pointed pseudo-triangulations are planar minimally rigid graphs embedded in the plane with pointed vertices (adjacent to an angle larger than 180 degrees. In this paper we prove that the opposite...

The polytope of non-crossing graphs on a planar point set (2003)

Orden, David, Santos, Francisco

For any finite set $\A$ of $n$ points in $\R^2$, we define a $(3n-3)$-dimensional simple polyhedron whose face poset is isomorphic to the poset of ``non-crossing marked graphs'' with vertex set $\A$,...

Planar Minimally Rigid Graphs and Pseudo-Triangulations (2003)

Ruth Haas, David Orden, Günter Rote, Francisco Santos, Brigitte Servatius, Hermann Servatius, ...

Pointed pseudo-triangulations are planar minimally rigid graphs embedded in the plane with pointed vertices (incident to an angle larger than #). In this paper we prove that the opposite statement is...

Asymptotically efficient triangulations of the d-cube (2002)

Orden, David, Santos, Francisco

Let $P$ and $Q$ be polytopes, the first of "low" dimension and the second of "high" dimension. We show how to triangulate the product $P \times Q$ efficiently (i.e., with few simplices) starting with...

Exchange rate misalignment and its effects on agricultural producer support estimates

Cheng, Fuzhi, Orden, David

"There have been different degrees of exchange rate disequilibrium in the developing countries during transition or reform periods since the mid 1980s. The level of the exchange rate and its...

Tell me where it hurts, an' I'll tell you who to call

Diao, Xinshen, Diaz-Bonilla, Eugenio, Robinson, Sherman, Orden, David

"This paper accomplishes two objectives. First, it provides simulation results from a computable general equilibrium (CGE) model that have helped focus the debate about the potential effects of...

Trading up

Orden, David, Lofgren, Hans, Gabre-Madhin, Eleni Z.

"Wealthy countries' agricultural subsidies have also created unfair competition. African farmers not only have limited access to rich-country agricultural markets, but they also face unfair...

Trading up

Orden, David, Lofgren, Hans, Gabre-Madhin, Eleni Z.

"Wealthy countries' agricultural subsidies have also created unfair competition. African farmers not only have limited access to rich-country agricultural markets, but they also face unfair...

Agricultural policies in India

Mullen, Kathleen, Orden, David, Gulati, Ashok

"Since the early 1990s, India has undergone substantial economic policy reform and economic growth. Though reforms in agricultural policy have lagged those in other sectors, they have nonetheless...

Financial Deregulation and the Dynamics of Money, Prices, and Output in New Zealand and Australia.

Orden, David, Fisher, Lance A

Effects of financial deregulation in the 1980s on the dynamic interactions among money, prices and output in New Zealand and Australia are evaluated. Prior to deregulation, the series appear to be...

Exchange rate alignment and producer support estimates (PSEs) for India

Fuzhi Cheng, David Orden

This article examines the effects of exchange rate alignment during 1985-2002 on agricultural producer support estimates (PSEs) for India. Based on several time series techniques, the equilibrium...

Avocado Pests and Avocado Trade

Everett B. Peterson, David Orden

This article evaluates the effects of a November 2004 phytosanitary rule that removed seasonal and geographic restrictions on the importation of fresh Hass avocados from approved orchards in Mexico...

More or less ambition?: modeling the development impact of U.S.–EU agricultural proposals in the Doha Round

Bouet, Antoine, Mevel, Simon, Orden, David

"What is at stake in the standoff between the United States and Europe over agriculture in the Doha Round of trade talks at the World Trade Organization (WTO)? What impact would an agreement based on...

Two opportunities to deliver on the Doha Development pledge:

Bouet, Antoine, Mevel, Simon, Orden, David

"In this brief, we evaluate the effects of a possible Doha agreement based on proposals currently on the table from the United States, the European Union, and the Group of Twenty (G20)....[The brief...

Agricultural producer support estimates for developing countries: Measurement issues and evidence from India, Indonesia, China, and Vietnam

Orden, David, Cheng, Fuzhi, Nguyen, Hoa, Grote, Ulrike, Thomas, Marcelle, Mullen, Kathleen, ...

"This study analyzes the evolution of agricultural policies from 1985 to 2002 in India, Indonesia, China, and Vietnam and provides empirical estimates of the degree of protection or disprotection to...

Food regulation and trade under the WTO: ten years in perspective

David Orden, Donna Roberts

This article reviews the performance of the World Trade Organization in the oversight of national regulatory decisions affecting agricultural and food trade. A picture emerges of modest international...

More or Less Ambition in the Doha Round: Winners and Losers from Trade Liberalisation with a Development Perspective

Antoine Bouët, Simon Mevel, David Orden

What is at stake in the standoff and suspension of the Doha Round of trade talks? What impact would an agreement based on greater or lesser levels of ambition have on developing countries, whose...

Aliternative methods for estimating long-run responses with applications to australian import demand

Ronald Bewley, David Orden

This paper compares and contrasts a number of single-equation and systems estimators of long-run responses with application to a three-variable import demand model. Two variants of Box and Tiao's...

Environmental Quality and Industry Protection with Noncooperative versus Cooperative Domestic and Trade Policies.

Schleich, Joachim, Orden, David

This paper characterizes environmental quality and industry protection in a large-country Grossman-Helpman model when production or consumption externalities exist and governments decide...

Effects of tariffs and sanitary barriers on high- and low-value poultry trade

Peterson, Everett B., Orden, David

"A competitive partial-equilibrium spatial model with heterogeneous goods is constructed to evaluate effects of the removal of tariffs, tariff-rate quotas, and sanitary regulations on world poultry...

Producer Support Estimates (PSEs) for agriculture in developing countries

Mullen, Kathleen, Sun, Dongsheng, Orden, David, Gulati, Ashok

In many developing countries, governments rely on price-based measures (including border protection and subsidies on inputs and outputs) more than on budgetary payments to achieve agricultural policy...

Agricultural policies in Indonesia

Thomas, Marcelle, Orden, David

As in many other developing countries, the concerns about food security in Indonesia during the 1980s and early 1990s resulted in policies aimed at achieving self-sufficiency in food crops. The...

U. S. agricultural policy

Orden, David

The 2002 U.S. farm bill has been widely criticized for increasing subsidies with detrimental effects on competing agricultural producers abroad and for undermining U.S. leadership in achieving...

The Impact of Global Cotton and Wheat Prices on Rural Poverty in Pakistan

David Orden, Abdul Salam, Reno Dewina, Hina Nazli, Nicholas Minot

The incidence of rural poverty in Pakistan increased during the late 1990s after having declined during the 1980s and early 1990s. A number of structural factors have been identified as contributing...

Impact of trade liberalization on agriculture in the near East and North Africa:

Minot, Nicholas, Chemingui, Mohamed, Thomas, Marcelle, Dewina, Reno, Orden, David

Trade liberalization Africa, Agricultural trade., Economic development Africa, Sub-Saharan., Sustainable agriculture Africa, Sub-Saharan, Agricultural marketing, Agricultural policy Africa,...

Measurement and Political Economy of Disputed Technical Regulations

Suzanne Thornsbury, Donna Roberts, David Orden

Technical regulations are increasingly visible in agricultural trade, yet their idiosyncratic nature has limited prior aggregate analysis. This research draws upon a unique data source for systematic...

Exchange Rate Effects on Agricultural Trade

David Orden

With sustained appreciation of the U.S. dollar over the past 4 years, the exchange rate has again taken on importance for agriculture. This overview paper revisits analysis of exchange rate impacts,...

Agricultural Interest Groups and the North American Free Trade Agreement

David Orden

This paper evaluates the influence of diverse U.S. agricultural interest groups on the North American Free Trade Agreement (NAFTA). Under NAFTA, licenses and quotas that restricted agricultural trade...

Cotton-Textile-Apparel sectors of Pakistan: Situations and challenges faced

Cororaton, Caesar B., Salam, Abdul, Altaf, Zafar, Orden, David, Dewina, Reno, Minot, Nicholas, ...

"Cotton, textiles, and apparel are critical agricultural and industrial sectors in Pakistan. This study provides descriptions of these sectors and examines the key developments emerging domestically...

Efficient choice among domestic and trade policies in the Grossman-Helpman Interest-Group Model

Schleich, Joachim, Orden, David

This paper generalizes the recent political economy model of Helpman and Grossman in which contributions by producer lobbies and government decisions about trade policies are modeled as a common...

EXCHANGE RATE EFFECTS ON CANADIAN/U.S. AGRICULTURAL PRICES

Xu, Miao, Orden, David

Exchange rate effects on prices in Canada and the United States are evaluated for five traded farm outputs (wheat, soybeans, corn, feeder steers, and slaughter steers) and four traded...

EFFECTS OF TARIFFS AND TECHNICAL BARRIERS ON HIGH- AND LOW-VALUE POULTRY TRADE

Peterson, Everett, Orden, David

A perfectly competitive spatial partial equilibrium model is constructed to evaluate some of the policy effects on world poultry trade. The model simulates the trade flows among six key exporting and...

PRELIMINARY EMPIRICAL EVIDENCE CONCERNING AN ASSET THEORY MODEL OF MARKETS FOR STORABLE AGRICULTURAL COMMODITIES

Orden, David

This paper has two objectives. The first is to summarize succinctly the concepts and operational procedure underlying the use of vector autoregression techniques. These techniques may be used either...

Can U.S. Farm Subsidies Be Bought Out?

Orden, David

Achieving substantial agricultural trade liberalization has proven elusive in the Doha Round. This paper examines policy reforms the United States might adopt to facilitate progress. The focus is on...

Exchange Rate Misalignment and Its Effects on Agricultural Producer Support Estimates: Empirical Evidence from India and China

Cheng, Fuzhi, Orden, David

There have been different degrees of exchange rate disequilibrium in the developing countries during transition or reform periods. The level of the exchange rate and its misalignment can have...

The Impact of Global Cotton Markets on Rural Poverty in Pakistan

Orden, David, Salam, Abdul, Dewina, Reno, Nazli, Hina, Minot, Nick

The incidence of rural poverty in Pakistan increased during the late 1990s after having declined during the 1980s and early 1990s. A number of structural factors have been identified as contributing...

FOOD REGULATION AND TRADE: TOWARD A SAFE AND OPEN GLOBAL SYSTEM -- AN OVERVIEW AND SYNOPSIS

Josling, Tim, Roberts, Donna, Orden, David

A synopsis is presented of challenges faced and WTO performance in disciplining national technical measures to achieve legitimate objectives in a least-trade-distorting manner. Importance of the...

AN ECONOMIC ASSESSMENT OF REMOVING THE PARTIAL U.S. IMPORT BAN ON FRESH MEXICAN HASS AVOCADOS

Peterson, Everett, Evangelou, Phylo, Orden, David, Bakshi, Nishita

The importation of fresh Hass avocados from Mexico into the United States has been restricted, totally or partially, since 1914 on grounds of the potential risk of pest infestation. This quarantine...

MEXICO-U.S. AVOCADO TRADE EXPANSION

Orden, David

International Relations/Trade,

EXCHANGE RATE EFFECTS ON AGRICULTURAL TRADE AND TRADE RELATIONS

Orden, David

Agricultural Finance, International Relations/Trade,

Exchange Rate Misalignment and Its Effects on Agricultural Producer Support Estimates (PSEs) in India

Cheng, Fuzhi, Orden, David

This paper examines the effects of the exchange rate misalignment on the agricultural Producer Support Estimates (PSEs) in India. Based on various time series techniques, the equilibrium exchange...

A Framework for Analyzing Technical Trade Barriers in Agricultural Markets

Roberts, Donna, Josling, Timothy E., Orden, David

Technical trade barriers are increasingly important in the international trade of agricultural products. Designing technical trade measures that can satisfy the growing demand for food safety,...

Pakistan's cotton and textile economy: Intersectoral linkages and effects on rural and urban poverty

Cororaton, Caesar B., Orden, David

"Pakistan's economy relies heavily on its cotton and textile sectors. The cotton-processing and textile industries make up almost half of the country's manufacturing base, while cotton is Pakistan's...

United States: Shadow WTO Agricultural Domestic Support Notifications

Blandford, David, Orden, David

"This paper examines past and proposed U.S. domestic support in light of current and potential World Trade Organization (WTO) constraints. It provides a brief review of U.S. farm policies since the...

The future of global sugar markets: Policies, reforms, and impact

Bureau, Jean-Christophe, Gohin, Alexandre, Guindé, Loïc, Millet, Guy, Brandão, Antônio Salazar P., Haley, Stephen, ...

"Sugar is one of the most highly protected agricultural commodities worldwide. This protection depresses trade opportunities and the prices received by exporters without preferential market access....

EXCHANGE RATE EFFECTS ON AGRICULTURAL TRADE

Orden, David

With sustained appreciation of the U.S. dollar over the past 4 years, the exchange rate has again taken on importance for agriculture. This overview paper revisits the analysis of exchange rate...

Measurement and Political Economy of Disputed Technical Regulations

Thornsbury, Suzanne, Roberts, Donna, Orden, David

Technical regulations are increasingly visible in agricultural trade, yet their idiosyncratic nature has limited prior aggregate analysis. This article draws on a unique data source for systematic...

GRANGER CAUSALITY FROM THE EXCHANGE RATE TO AGRICULTURAL PRICES AND EXPORT SALES

Bradshaw, Girard W., Orden, David

In-sample and out-of-sample Granger causality tests are applied to determine whether the real trade-weighted agricultural exchange rate helps predict monthly real prices and export sales of wheat,...

Effects of Tariffs and Sanitary Barriers on High- and Low-Value Poultry Trade

Peterson, Everett B., Orden, David

A competitive partial-equilibrium spatial model with heterogeneous goods is constructed to evaluate effects of the removal of tariffs, tariff-rate quotas, and sanitary regulations on world poultry...

Bijections for Baxter Families and Related Objects

Stefan Felsner, Marc Noy, Departament Matemàtica, Aplicada Ii, Éric Fusy, ...

The Baxter number Bn can be written as Bn = � n 0 Θk,n−k−1 with Θk,ℓ = 2 (k + 1) 2 (k + 2)

WHAT IS HAPPENING TO U.S. FARM POLICY: A CHRONOLOGY AND ANALYSIS OF THE 1995-96 FARM BILL DEBATE

Orden, David, Paarlberg, Robert, Roe, Terry

This paper presents a chronology of the 1995-96 farm bill debate, which was historic in several dimensions. Victories in the 1994 mid-term elections gave Republican majorities control of Congress for...

ACRE in the U.S. Farm Bill and the WTO

Zulauf, Carl, Orden, David

Agricultural and Food Policy, International Relations/Trade,

Determinants of Farm Policies in the United States, 1996-2008

Orden, David, Blandford, David, Josling, Timothy

This paper focuses on the political economy of U.S. farm policy since the Uruguay Round trade negotiations concluded in 1994 and established the WTO. The continued ability of the powerful farm lobby...

ACRE in the U.S. Farm Bill and the WTO

Zulauf, Carl, Orden, David

Two counterfactual analyses investigate the new ACRE program. Had ACRE existed instead of the programs authorized during 1996-2006 for corn, soybeans, and wheat, farm program spending would have...

Poverty Implications of Agricultural and Non-agricultural Price Distortions in Pakistan

Cororaton, Caesar B., Orden, David

Distorted incentives, agricultural and trade policy reforms, national agricultural development, Agricultural and Food Policy, International Relations/Trade, F13, F14, Q17, Q18,