19 research outputs found

    Economic and social foundations of collective action : an inter-disciplinary institutional approach to Mexican dairy farmers

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    The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.Title from title screen of research.pdf file (viewed on February 13, 2008)Thesis (Ph. D.) University of Missouri-Columbia 2007.This research uses an interdisciplinarian neo-institutional approach to examine formal and informal institutional factors that influence dairy farmers' ideas about participation in collective action in the "Altos Sur" region in Jalisco, Mexico. Data collected from face-to-face interviews of a sample of 100 dairy farmers was used to measure and analyze formal and informal factors that influence these dairy farmers' decisions about collective action; whether or not to join other dairy farmers to produce milk in a collective way. This research tests hypotheses not only on dairy farmers' perceptions of formal institutions such as the state, the market and the economic organization, but also on their perceptions of informal institutions such as bonding and bridging social capital which might have influenced them to participate in collective action. Results of this research indicate that these dairy farmers' motivations to go into entrepreneurial collective action were influenced by both formal and informal institutional perceptions. Perceptions of formal institutions that affected willingness to engage in collective action include views about government responsibilities and duties in the milk industry; perceptions of the functionality of an economic organization, and perceptions of market functionality. The surveys also show that farmers' perceptions of bonding social capital had a more significant influence than bridging social capital on whether or not they were encouraged to participate in collective action. These findings are discussed in relation to the larger issue of whether collective entrepreneurial action can mediate market failure that is exacerbated by globalization.Includes bibliographical reference

    Latino farmers and USDA agents talk about challenges to access and use of USDA programs

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    Presentation made at Latinos in the Heartland (11th : 2013 : Columbia, Mo.) and published in the annual conference proceedings.According to the U.S. Census of Agriculture, 25% of Missouri Latino farmers and rancher stopped farming and ranching operations from 2002 to 2007, even though the population of Latinos was increasing across the state. One possibility was that Latino farmers and ranchers were not effectively accessing USDA support programs. In order to better understand this dramatic decline in the number of Latino farmers and ranchers and to identify ways to improve access and use of USDA programs by Latino farmers and ranchers, 30 farmers and ranchers and five USDA agents were interviewed in southwest, Missouri. Factors such as cultural influence, English communication, insufficient network connections, poor business literacy and a lack of technical knowledge on farming and ranching, constrained the farmers and ranchers from maintaining a productive and sustainable relationship with the USDA. These factors were mentioned by all of the individuals interviewed. In addition, they agreed that one of the main challenges is to create a communication bridge that begins to explore and analyze Latino farmers and ranchers qualifications for access and use of USDA programs. This bridge may facilitate a better understanding of the need for Latino farmers and ranchers to access and use USDA programs, as well as improve their understanding of programs and services offered by the USDA. Improving relationships between Latino farmers and ranchers and USDA resource agencies can assist these producers with establishing and growing their enterprises, as well as influence the Latino farmers and ranchers socioeconomic integration into the broader community

    Exploring Beginning Latino Farmers and Ranchers' Willingness to Become Involved in Community Activities in Rural Missouri

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    Presentation made at Latinos in the Heartland (13th : 2015 : Columbia, Mo.) and published in the annual conference proceedings.In 2013, we conducted two workshop series, each consisting of 10 sessions, focused on how to improve financial capacity of agribusiness and to gain access to community resources. As part of the workshops, eighteen Latino farmers and ranchers in Southwest Missouri completed a survey that analyzed their disposition towards becoming involved in community activities over the upcoming six months. The willingness of the Latino farmers and ranchers to become involved in community activities was explored across five indicators: 1. to be more engaged in community leadership roles, 2. to form new connections in the community, 3. to display more tolerance when working with others, 4. to develop a community action plan, and 5. to implement a community project. A total of 140 answers to each indicator were collected from participants and were analyzed using symmetric responses, where 1 was coded as "not willing," 2 was coded as "reluctant," 3 as "neutral," 4 as "moderate willing," and 5 as "very willing." Participants' responses to each of those five indicators showed that many (46%, 43%, 51%, 53% and 48%) beginning farmers and ranchers were "very willing" to involve themselves with community projects and activities during the upcoming six months. The willingness of participants to become involved in community activities helped us to know their predisposition to integrate and assimilate into the communities where they lived. It is argued that Latino immigrants have trouble assimilating into mainstream US culture (Huntington, 2004), and those who do assimilate, belong to a cluster with the following characteristics: spatial concentration, high incomes, intermarriage, English fluency and high levels of embeddedness in Anglo-social contexts (South et al. 2005, Waters & Jimenez, 2005). The predisposition to participate in community activities is positively related with Waters and Jimenez's perception (2005) that US communities have evolved in absorbing new immigrants and continual immigrant replenishment makes assimilation less visible. Other factors influencing positive integration and assimilation may be attributed to the population size of that immigrant group in the community and the population size of the rural community where they immigrated. A multistate conference about integration of immigrants Proceedings of the 13th Annual Conference Latinos in the Heartland: Growing Together in New Destination Areas www.cambio.missouri.edu/Library/ Key words: beginning Latino farmers and ranchers, immigrant integration, rural communities

    Improving the use of USDA programs among Hispanic and Latino farmers and ranchers

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    Key findings: Latino farmers and ranchers in both states are very entrepreneurial and are seeking ways to expand their farming and ranching operations, both in size and scope. However, significant barriers exist for them to realize their ideas. The barriers for Latino farmers and ranchers are similar to those expressed by all beginning farmers and ranchers -- a lack of resources such as land, capital, equipment and knowledge. Latino farmers and ranchers lack awareness of where to get assistance to address these barriers. Latino farmers and ranchers in both states face barriers other beginning farmers and ranchers do not, language and cultural barriers chief among them. Latino farmers and ranchers in both states have, at best, a limited knowledge of USDA programs. Latino farmers and ranchers and USDA officials in both states have had minimal experience dealing with each other. USDA has minimal outreach to Latino farmers and ranchers in both states. USDA officials in both states have limited knowledge of who Latino farmers and ranchers are and where they are located. Language and cultural awareness are the major barriers on both sides of the relationship

    Direct observation of the dead-cone effect in quantum chromodynamics

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    The direct measurement of the QCD dead cone in charm quark fragmentation is reported, using iterative declustering of jets tagged with a fully reconstructed charmed hadron

    Multiplicity dependence of jet-like two-particle correlations in p-Pb collisions at sNN\sqrt{s_NN} = 5.02 TeV with ALICE at LHC

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    Two-particle angular correlations between unidentified charged trigger and associated particles are measured by the ALICE detector in p–Pb collisions at a nucleon–nucleon centre-of-mass energy of 5.02 TeV. The transverse-momentum range 0.7 < pT,assoc<pT,trigp_{T,assoc} < p_{T,trig} < 5.0 GeV/c is examined, to include correlations induced by jets originating from low momentum-transfer scatterings (minijets). The correlations expressed as associated yield per trigger particle are obtained in the pseudorapidity range |η| < 0.9. The near-side long-range pseudorapidity correlations observed in high-multiplicity p–Pb collisions are subtracted from both near-side short-range and away-side correlations in order to remove the non- jet-like components. The yields in the jet-like peaks are found to be invariant with event multiplicity with the exception of events with low multiplicity. This invariance is consistent with the particles being produced via the incoherent fragmentation of multiple parton–parton scatterings, while the yield related to the previously observed ridge structures is not jet-related. The number of uncorrelated sources of particle production is found to increase linearly with multiplicity, suggesting no saturation of the number of multi-parton interactions even in the highest multiplicity p–Pb collisions. Further, the number scales in the intermediate multiplicity region with the number of binary nucleon–nucleon collisions estimated with a Glauber Monte-Carlo simulation.Two-particle angular correlations between unidentified charged trigger and associated particles are measured by the ALICE detector in p–Pb collisions at a nucleon–nucleon centre-of-mass energy of 5.02 TeV. The transverse-momentum range 0.7<pT,assoc<pT,trig<5.0 GeV/c is examined, to include correlations induced by jets originating from low momentum-transfer scatterings (minijets). The correlations expressed as associated yield per trigger particle are obtained in the pseudorapidity range |η|<0.9 . The near-side long-range pseudorapidity correlations observed in high-multiplicity p–Pb collisions are subtracted from both near-side short-range and away-side correlations in order to remove the non-jet-like components. The yields in the jet-like peaks are found to be invariant with event multiplicity with the exception of events with low multiplicity. This invariance is consistent with the particles being produced via the incoherent fragmentation of multiple parton–parton scatterings, while the yield related to the previously observed ridge structures is not jet-related. The number of uncorrelated sources of particle production is found to increase linearly with multiplicity, suggesting no saturation of the number of multi-parton interactions even in the highest multiplicity p–Pb collisions. Further, the number scales only in the intermediate multiplicity region with the number of binary nucleon–nucleon collisions estimated with a Glauber Monte-Carlo simulation.Two-particle angular correlations between unidentified charged trigger and associated particles are measured by the ALICE detector in p-Pb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV. The transverse-momentum range 0.7 <pT,assoc<pT,trig< < p_{\rm{T}, assoc} < p_{\rm{T}, trig} < 5.0 GeV/cc is examined, to include correlations induced by jets originating from low momen\-tum-transfer scatterings (minijets). The correlations expressed as associated yield per trigger particle are obtained in the pseudorapidity range η<0.9|\eta|<0.9. The near-side long-range pseudorapidity correlations observed in high-multiplicity p-Pb collisions are subtracted from both near-side short-range and away-side correlations in order to remove the non-jet-like components. The yields in the jet-like peaks are found to be invariant with event multiplicity with the exception of events with low multiplicity. This invariance is consistent with the particles being produced via the incoherent fragmentation of multiple parton--parton scatterings, while the yield related to the previously observed ridge structures is not jet-related. The number of uncorrelated sources of particle production is found to increase linearly with multiplicity, suggesting no saturation of the number of multi-parton interactions even in the highest multiplicity p-Pb collisions. Further, the number scales in the intermediate multiplicity region with the number of binary nucleon-nucleon collisions estimated with a Glauber Monte-Carlo simulation

    Direct observation of the dead-cone effect in quantum chromodynamics

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    At particle collider experiments, elementary particle interactions with large momentum transfer produce quarks and gluons (known as partons) whose evolution is governed by the strong force, as described by the theory of quantum chromodynamics (QCD) [1]. The vacuum is not transparent to the partons and induces gluon radiation and quark pair production in a process that can be described as a parton shower [2]. Studying the pattern of the parton shower is one of the key experimental tools in understanding the properties of QCD. This pattern is expected to depend on the mass of the initiating parton, through a phenomenon known as the dead-cone effect, which predicts a suppression of the gluon spectrum emitted by a heavy quark of mass m and energy E, within a cone of angular size m/E around the emitter [3]. A direct observation of the dead-cone effect in QCD has not been possible until now, due to the challenge of reconstructing the cascading quarks and gluons from the experimentally accessible bound hadronic states. Here we show the first direct observation of the QCD dead-cone by using new iterative declustering techniques [4, 5] to reconstruct the parton shower of charm quarks. This result confirms a fundamental feature of QCD, which is derived more generally from its origin as a gauge quantum field theory. Furthermore, the measurement of a dead-cone angle constitutes the first direct experimental observation of the non-zero mass of the charm quark, which is a fundamental constant in the standard model of particle physics.The direct measurement of the QCD dead cone in charm quark fragmentation is reported, using iterative declustering of jets tagged with a fully reconstructed charmed hadron.In particle collider experiments, elementary particle interactions with large momentum transfer produce quarks and gluons (known as partons) whose evolution is governed by the strong force, as described by the theory of quantum chromodynamics (QCD). These partons subsequently emit further partons in a process that can be described as a parton shower which culminates in the formation of detectable hadrons. Studying the pattern of the parton shower is one of the key experimental tools for testing QCD. This pattern is expected to depend on the mass of the initiating parton, through a phenomenon known as the dead-cone effect, which predicts a suppression of the gluon spectrum emitted by a heavy quark of mass mQm_{\rm{Q}} and energy EE, within a cone of angular size mQm_{\rm{Q}}/EE around the emitter. Previously, a direct observation of the dead-cone effect in QCD had not been possible, owing to the challenge of reconstructing the cascading quarks and gluons from the experimentally accessible hadrons. We report the direct observation of the QCD dead cone by using new iterative declustering techniques to reconstruct the parton shower of charm quarks. This result confirms a fundamental feature of QCD. Furthermore, the measurement of a dead-cone angle constitutes a direct experimental observation of the non-zero mass of the charm quark, which is a fundamental constant in the standard model of particle physics

    Direct observation of the dead-cone effect in quantum chromodynamics

    No full text
    In particle collider experiments, elementary particle interactions with large momentum transfer produce quarks and gluons (known as partons) whose evolution is governed by the strong force, as described by the theory of quantum chromodynamics (QCD). These partons subsequently emit further partons in a process that can be described as a parton shower which culminates in the formation of detectable hadrons. Studying the pattern of the parton shower is one of the key experimental tools for testing QCD. This pattern is expected to depend on the mass of the initiating parton, through a phenomenon known as the dead-cone effect, which predicts a suppression of the gluon spectrum emitted by a heavy quark of mass mQ and energy E, within a cone of angular size mQ/E around the emitter. Previously, a direct observation of the dead-cone effect in QCD had not been possible, owing to the challenge of reconstructing the cascading quarks and gluons from the experimentally accessible hadrons. We report the direct observation of the QCD dead cone by using new iterative declustering techniques to reconstruct the parton shower of charm quarks. This result confirms a fundamental feature of QCD. Furthermore, the measurement of a dead-cone angle constitutes a direct experimental observation of the non-zero mass of the charm quark, which is a fundamental constant in the standard model of particle physics

    Investigation of K+K− interactions via femtoscopy in Pb-Pb collisions at √sNN = 2.76 TeV at the CERN Large Hadron Collider

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    Femtoscopic correlations of non-identical charged kaons (K+K−) are studied in Pb−Pb collisions at a center-of-mass energy per nucleon−nucleon collision sNN−−−√=2.76 TeV by ALICE at the LHC. One-dimensional K+K− correlation functions are analyzed in three centrality classes and eight intervals of particle-pair transverse momentum. The Lednický and Luboshitz interaction model used in the K+K− analysis includes the final-state Coulomb interactions between kaons and the final-state interaction through a0(980) and f0(980) resonances. The mass of f0(980) and coupling were extracted from the fit to K+K− correlation functions using the femtoscopic technique for the first time. The measured mass and width of the f0(980) resonance are consistent with other published measurements. The height of the ϕ(1020) meson peak present in the K+K− correlation function rapidly decreases with increasing source radius, qualitatively in agreement with an inverse volume dependence. A phenomenological fit to this trend suggests that the ϕ(1020) meson yield is dominated by particles produced directly from the hadronization of the system. The small fraction subsequently produced by FSI could not be precisely quantified with data presented in this paper and will be assessed in future work
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