... 120 cm of diameter (Zárate, 1989). The mineralogical composition is dominated by plagioclase,... more ... 120 cm of diameter (Zárate, 1989). The mineralogical composition is dominated by plagioclase, volcanic shards, quartz and volcanic lithics, thereby implicating an Andean source (Teruggi, 1957). The most striking features of ...
The Mantoverde Project, now under construction, is located in northern Chile, 1000 km from Santia... more The Mantoverde Project, now under construction, is located in northern Chile, 1000 km from Santiago and 40 km from the coast at an altitude of 900 m above sea level. It is a copper oxide orebody with brochantite, chrysocolla and malachite as the main copper minerals.Extensive metallurgical testwork was carried out during the prefeasibility and feasibility studies to define the
In 2001, the New Jersey Department of Environmental Protection (NJDEP) adopted rules specifically... more In 2001, the New Jersey Department of Environmental Protection (NJDEP) adopted rules specifically protecting vernal pool habitat for the first time. Vernal pools are small isolated temporary bodies of water that provide critical breeding habitat for a number of amphibian species. To implement these rules and ultimately afford vernal pools protection, the NJDEP first needed to assemble a statewide database of vernal pool locations. In response, the Rutgers University Center for Remote Sensing and Spatial Analysis (CRSSA) was funded to develop a cost effective technique to map vernal pool locations statewide. The objective of CRSSA's mapping effort was to develop a complete potential vernal pool database to be able to identify individual isolated vernal pools as well as areas of high local density, or 'hotspots'. CRSSA used visual interpretation of leaf-off color infrared digital orthophotography in a computerized GIS environment to identify and map over 13,000 potential vernal pools. Using the 1 m scale imagery, we determined the minimum detectable pool size to be on the order of 0.02 ha in size. Subsequent field checking has revealed a 12% error of commission that was due to our inclination towards erring on the side of inclusion in mapping many water features as potential vernal pools. For a vernal pool to receive regulated protection, it must be 'certified' that it serves as habitat for obligate or facultative vernal pool amphibian species. To aid in these efforts, CRSSA developed an interactive internet mapping site to assist NJDEP and its citizen volunteer corps in locating and navigating to their survey areas and to facilitate the on-line submittal of survey observations. q
Two new families of Reissner-Mindlin triangular finite elements are analyzed. One family, general... more Two new families of Reissner-Mindlin triangular finite elements are analyzed. One family, generalizing an element proposed by Zienkiewicz and Lefebvre, approximates (for k ≥ 1) the transverse displacement by continuous piecewise polynomials of degree k + 1, the rotation by continuous piecewise polynomials of degree k + 1 plus bubble functions of degree k + 3, and projects the shear stress into the space of discontinuous piecewise polynomials of degree k. The second family is similar to the first, but uses degree k rather than degree k + 1 continuous piecewise polynomials to approximate the rotation. We prove that for 2 ≤ s ≤ k + 1, the L 2 errors in the derivatives of the transverse displacement are bounded by Ch s and the L 2 errors in the rotation and its derivatives are bounded by Ch s min(1, ht −1 ) and Ch s−1 min(1, ht −1 ), respectively, for the first family, and by Ch s and Ch s−1 , respectively, for the second family (with C independent of the mesh size h and plate thickness t). These estimates are of optimal order for the second family, and so it is locking-free. For the first family, while the estimates for the derivatives of the transverse displacement are of optimal order, there is a deterioration of order h in the approximation of the rotation and its derivatives for t small, demonstrating locking of order h −1 . Numerical experiments using the lowest order elements of each family are presented to show their performance and the sharpness of the estimates. Additional experiments show the negative effects of eliminating the projection of the shear stress.
In Vietnam, pig production and pork demand are developing rapidly. Still, 80% of the national pig... more In Vietnam, pig production and pork demand are developing rapidly. Still, 80% of the national pig herd is kept on smallholder farms while policy mainly focuses on intensification of pig production. The aim of this study is to evaluate possibilities to organize pig breeding and marketing channels in remote areas in the uplands of Northern Vietnam. The study compiles three parts: (1) Evaluation of farmers breeding management and breed and trait preferences for pigs; (2) Evaluation of different crossbreeding schemes for leaner meat production; and Design of appropriate organizational settings for pig breeding and marketing. Ban pigs are the second most predominant breed next to the Mong Cai. Ban pigs are valued by farmers for their feed intake spectrum, feed intake capacity, disease tolerance, health/strength, growth rate and carcass quality. For all modelled crossbreeding schemes, genetic gain is low; the Yorkshire × Ban crossbreeding scheme shows the highest overall genetic gain. The traditional production and fattening of Exotic boar× Local dam F 1 crosses does not require particular organizational setups. This system already exists in an improvised way. The advantage of an organized scheme would be the controlled maintenance of the local breed. For the latter, a stratified pig breeding system seems promising, requiring innovative organizational setups. A short food supply chain is proposed. This system builds links between remote and close-to-market villages and populations. Critical organizational aspects like poorly developed infrastructure, poor access to input and output markets and information can be overcome.
Objective-Dysfunction of the hippocampus has long been suspected to be a key component of the pat... more Objective-Dysfunction of the hippocampus has long been suspected to be a key component of the pathophysiology of major depressive disorder. Despite evidence of hippocampal structural abnormalities in depressed patients, abnormal hippocampal functioning has not been demonstrated. We aimed to link spatial navigation deficits previously documented in depressed patients to abnormal hippocampal functioning using a virtual reality navigation task.
Journal of Organizational Behavior Management, 1984
... off have been used in systematic response-contingent programs with direct-service staff, appl... more ... off have been used in systematic response-contingent programs with direct-service staff, application of behavioral techniques has uni-formly improved (Iwata, Bailey, Brown, Foshee, & Alpern, 1976; Patterson ... 170 Ir~~provirtg Sfaff Effecrive~tess in Hurno!~ Service Setrir~gs ...
Febrero del 2010 2 DEDICATORIA A nuestros padres por impulsarnos continuamente, y por disfrutar d... more Febrero del 2010 2 DEDICATORIA A nuestros padres por impulsarnos continuamente, y por disfrutar de nuestros logros, a nuestros profesores por impartirnos los conocimientos necesarios para desenvolvernos en el mundo empresarial, a nuestros amigos por su apoyo durante nuestra carrera universitaria.
... 120 cm of diameter (Zárate, 1989). The mineralogical composition is dominated by plagioclase,... more ... 120 cm of diameter (Zárate, 1989). The mineralogical composition is dominated by plagioclase, volcanic shards, quartz and volcanic lithics, thereby implicating an Andean source (Teruggi, 1957). The most striking features of ...
The Mantoverde Project, now under construction, is located in northern Chile, 1000 km from Santia... more The Mantoverde Project, now under construction, is located in northern Chile, 1000 km from Santiago and 40 km from the coast at an altitude of 900 m above sea level. It is a copper oxide orebody with brochantite, chrysocolla and malachite as the main copper minerals.Extensive metallurgical testwork was carried out during the prefeasibility and feasibility studies to define the
In 2001, the New Jersey Department of Environmental Protection (NJDEP) adopted rules specifically... more In 2001, the New Jersey Department of Environmental Protection (NJDEP) adopted rules specifically protecting vernal pool habitat for the first time. Vernal pools are small isolated temporary bodies of water that provide critical breeding habitat for a number of amphibian species. To implement these rules and ultimately afford vernal pools protection, the NJDEP first needed to assemble a statewide database of vernal pool locations. In response, the Rutgers University Center for Remote Sensing and Spatial Analysis (CRSSA) was funded to develop a cost effective technique to map vernal pool locations statewide. The objective of CRSSA's mapping effort was to develop a complete potential vernal pool database to be able to identify individual isolated vernal pools as well as areas of high local density, or 'hotspots'. CRSSA used visual interpretation of leaf-off color infrared digital orthophotography in a computerized GIS environment to identify and map over 13,000 potential vernal pools. Using the 1 m scale imagery, we determined the minimum detectable pool size to be on the order of 0.02 ha in size. Subsequent field checking has revealed a 12% error of commission that was due to our inclination towards erring on the side of inclusion in mapping many water features as potential vernal pools. For a vernal pool to receive regulated protection, it must be 'certified' that it serves as habitat for obligate or facultative vernal pool amphibian species. To aid in these efforts, CRSSA developed an interactive internet mapping site to assist NJDEP and its citizen volunteer corps in locating and navigating to their survey areas and to facilitate the on-line submittal of survey observations. q
Two new families of Reissner-Mindlin triangular finite elements are analyzed. One family, general... more Two new families of Reissner-Mindlin triangular finite elements are analyzed. One family, generalizing an element proposed by Zienkiewicz and Lefebvre, approximates (for k ≥ 1) the transverse displacement by continuous piecewise polynomials of degree k + 1, the rotation by continuous piecewise polynomials of degree k + 1 plus bubble functions of degree k + 3, and projects the shear stress into the space of discontinuous piecewise polynomials of degree k. The second family is similar to the first, but uses degree k rather than degree k + 1 continuous piecewise polynomials to approximate the rotation. We prove that for 2 ≤ s ≤ k + 1, the L 2 errors in the derivatives of the transverse displacement are bounded by Ch s and the L 2 errors in the rotation and its derivatives are bounded by Ch s min(1, ht −1 ) and Ch s−1 min(1, ht −1 ), respectively, for the first family, and by Ch s and Ch s−1 , respectively, for the second family (with C independent of the mesh size h and plate thickness t). These estimates are of optimal order for the second family, and so it is locking-free. For the first family, while the estimates for the derivatives of the transverse displacement are of optimal order, there is a deterioration of order h in the approximation of the rotation and its derivatives for t small, demonstrating locking of order h −1 . Numerical experiments using the lowest order elements of each family are presented to show their performance and the sharpness of the estimates. Additional experiments show the negative effects of eliminating the projection of the shear stress.
In Vietnam, pig production and pork demand are developing rapidly. Still, 80% of the national pig... more In Vietnam, pig production and pork demand are developing rapidly. Still, 80% of the national pig herd is kept on smallholder farms while policy mainly focuses on intensification of pig production. The aim of this study is to evaluate possibilities to organize pig breeding and marketing channels in remote areas in the uplands of Northern Vietnam. The study compiles three parts: (1) Evaluation of farmers breeding management and breed and trait preferences for pigs; (2) Evaluation of different crossbreeding schemes for leaner meat production; and Design of appropriate organizational settings for pig breeding and marketing. Ban pigs are the second most predominant breed next to the Mong Cai. Ban pigs are valued by farmers for their feed intake spectrum, feed intake capacity, disease tolerance, health/strength, growth rate and carcass quality. For all modelled crossbreeding schemes, genetic gain is low; the Yorkshire × Ban crossbreeding scheme shows the highest overall genetic gain. The traditional production and fattening of Exotic boar× Local dam F 1 crosses does not require particular organizational setups. This system already exists in an improvised way. The advantage of an organized scheme would be the controlled maintenance of the local breed. For the latter, a stratified pig breeding system seems promising, requiring innovative organizational setups. A short food supply chain is proposed. This system builds links between remote and close-to-market villages and populations. Critical organizational aspects like poorly developed infrastructure, poor access to input and output markets and information can be overcome.
Objective-Dysfunction of the hippocampus has long been suspected to be a key component of the pat... more Objective-Dysfunction of the hippocampus has long been suspected to be a key component of the pathophysiology of major depressive disorder. Despite evidence of hippocampal structural abnormalities in depressed patients, abnormal hippocampal functioning has not been demonstrated. We aimed to link spatial navigation deficits previously documented in depressed patients to abnormal hippocampal functioning using a virtual reality navigation task.
Journal of Organizational Behavior Management, 1984
... off have been used in systematic response-contingent programs with direct-service staff, appl... more ... off have been used in systematic response-contingent programs with direct-service staff, application of behavioral techniques has uni-formly improved (Iwata, Bailey, Brown, Foshee, & Alpern, 1976; Patterson ... 170 Ir~~provirtg Sfaff Effecrive~tess in Hurno!~ Service Setrir~gs ...
Febrero del 2010 2 DEDICATORIA A nuestros padres por impulsarnos continuamente, y por disfrutar d... more Febrero del 2010 2 DEDICATORIA A nuestros padres por impulsarnos continuamente, y por disfrutar de nuestros logros, a nuestros profesores por impartirnos los conocimientos necesarios para desenvolvernos en el mundo empresarial, a nuestros amigos por su apoyo durante nuestra carrera universitaria.
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Papers by Richard Zarate