El objetivo del presente estudio fue analizar los factores productivos, reproductivos, alimentarios y climáticos que afectan la producción de leche en un sistema comercial en la provincia de ...Mayabeque, Cuba. El estudio tomó en cuenta los factores relacionados con la disponibilidad de pastos, suministro de suplemento, indicadores climáticos y época del año. Para el análisis de los resultados se utilizó el modelo estadístico de medición de impacto (MEMI) y el análisis de regresión lineal en la lechería genético cuatro, que posee un sistema con banco de biomasa Cenchus purpureus cv Cuba CT-115, y ganado Siboney de Cuba en un periodo de doce años de estudio. Los resultados indicaron que la producción de leche/ha -1 , litros/vaca -1 y kg norgold/día -1 , reconocido como concentrado y producción e identificado como componente 1, explicó 34.4% de la varianza; el segundo componente llamado clima y compuesto por la precipitación y temperatura máxima junto con la disponibilidad del pasto, expresó 19.0% de la varianza; y el tercer componente llamado ITH conformado por las variables humedad relativa El objetivo del presente estudio fue analizar los factores productivos, reproductivos, alimentarios y climáticos que afectan la producción de leche en un sistema comercial en la provincia de Mayabeque, Cuba. El estudio tomó en cuenta los factores relacionados con la disponibilidad de pastos, suministro de suplemento, indicadores climáticos y época del año. Para el análisis de los resultados se utilizó el modelo estadístico de medición de impacto (MEMI) y el análisis de regresión lineal en la lechería genético cuatro, que posee un sistema con banco de biomasa Cenchus purpureus cv Cuba CT-115, y ganado Siboney de Cuba en un periodo de doce años de estudio. Los resultados indicaron que la producción de leche/ha -1 , litros/vaca -1 y kg norgold/día -1 , reconocido como concentrado y producción e identificado como componente 1, explicó 34.4% de la varianza; el segundo componente llamado clima y compuesto por la precipitación y temperatura máxima junto con la disponibilidad del pasto, expresó 19.0% de la varianza; y el tercer componente llamado ITH conformado por las variables humedad relativa
El objetivo del presente estudio fue analizar los factores productivos, reproductivos, alimentarios y climáticos que afectan la producción de leche en un sistema comercial en la provincia de ...Mayabeque, Cuba. El estudio tomó en cuenta los factores relacionados con la disponibilidad de pastos, suministro de suplemento, indicadores climáticos y época del año. Para el análisis de los resultados se utilizó el modelo estadístico de medición de impacto (MEMI) y el análisis de regresión lineal en la lechería genético cuatro, que posee un sistema con banco de biomasa Cenchus purpureus cv Cuba CT-115, y ganado Siboney de Cuba en un periodo de doce años de estudio. Los resultados indicaron que la producción de leche/ha.sup.-1, litros/vaca.sup.-1 y kg norgold/día.sup.-1, reconocido como concentrado y producción e identificado como componente 1, explicó 34.4% de la varianza; el segundo componente llamado clima y compuesto por la precipitación y temperatura máxima junto con la disponibilidad del pasto, expresó 19.0% de la varianza; y el tercer componente llamado ITH conformado por las variables humedad relativa e índice de temperatura--humedad contribuyó con 12.3% de la varianza. Lo anterior significa que estas variables incluidas en el modelo explicaron 65.0% de la varianza total. La cantidad de alimento concentrado (kg de Norgold.sup.-1), la producción/ha.sup.-1 y producción/vaca.sup.-1 mostraron mayor importancia--siendo afectados por la época poco lluviosa--, la baja disponibilidad de concentrado, asociado al deterioro de los pastos y de la influencia negativa de la temperatura ambiente y la humedad relativa, afectaron a los animales y a los pastos en la producción láctea.
Photogrammetric models have become a standard tool for the study of surfaces, structures and natural elements. As an alternative to Light Detection and Ranging (LiDAR), photogrammetry allows 3D point ...clouds to be obtained at a much lower cost. This paper presents an enhanced workflow for image-based 3D reconstruction of high-resolution models designed to work with fixed time-lapse camera systems, based on multi-epoch multi-images (MEMI) to exploit redundancy. This workflow is part of a fully automatic working setup that includes all steps: from capturing the images to obtaining clusters from change detection. The workflow is capable of obtaining photogrammetric models with a higher quality than the classic Structure from Motion (SfM) time-lapse photogrammetry workflow. The MEMI workflow reduced the error up to a factor of 2 when compared to the previous approach, allowing for M3C2 standard deviation of 1.5 cm. In terms of absolute accuracy, using LiDAR data as a reference, our proposed method is 20% more accurate than models obtained with the classic workflow. The automation of the method as well as the improvement of the quality of the 3D reconstructed models enables accurate 4D photogrammetric analysis in near-real time.
Research on high-temporal-resolution rock slope monitoring has tended to focus on scenarios where spatial resolution is also high. Accordingly, there is a lack of understanding of the implications ...for rock slope monitoring results in cases with high temporal resolution but low spatial resolution, which is the focus of this study. This study uses automatically captured photos taken at a daily frequency by five fixed-base cameras in conjunction with multi-epoch Structure-from-Motion (SfM) photogrammetric processing techniques to evaluate changes in a rock slope in Majes, Arequipa, Peru. The results of the monitoring campaign demonstrate that there are potential issues with the common notion that higher frequency change detection is always superior. For lower spatial resolutions or when only large changes are of concern, using a high-frequency monitoring method may cause small volume changes that eventually aggrade into larger areas of change to be missed, whereas most of the total volume change would be captured with lower-frequency monitoring intervals. In this study, daily change detection and volume calculation resulted in a cumulative rockfall volume of 4300 m3 over about 14 months, while change detection and volume calculation between dates at the start and end of the 14-month period resulted in a total rockfall volume of 12,300 m3. High-frequency monitoring is still the most accurate approach for evaluating slope evolution from a rockfall frequency and size distribution perspective, and it allows for the detection of short accelerations and pre-failure deformations, but longer-term comparison intervals may be required in cases where spatial resolution is low relative to temporal resolution to more accurately reflect the total volume change of a given rock slope over a long period of time.
One of the most important foundations of tourism planning in different geographic regions, is the preparation of a tourism environment calendar, especially based on the regional climate. The role of ...the climate in attracting tourists in the tourism season is of great importance. In this study, to determine the climate-comfort of the ecotourists in Bushehr, the bioclimate indices used in the MEMI model and the More method, as well as the climatic parameters of air temperature, relative humidity, cloudy sky, wind speed, vapor pressure and radiant temperature of the environment was used during the time period of (1986-2015) and local time of 18:30. Considering the long-term average of the above data, the values of PET indices (physiological temperature of the body), SET (standard effective temperature), and the effect of Tmrt (mean radiant temperature of the environment) on the two indices were calculated and compared using RayMan and SPSS softwares. Ecotourism climatme-comfort surveys on a daily basis show that the best time period for the presence of ecotourists in terms of picnic leisure activities on a daily basis is from (May 30 to June 15) and from (September 26 to October 25) and on the monthly basis of May, June and October, for swimming on a daily basis from (April 30 to May 21) and (August 26 to October 5) and on a monthly scale of May and September, and also for sailing from (April 30 to May 16) and (August 26 to October 5) and on the monthly scale of May and September. In terms of correlation, there is a positive and strong correlation between PET and SET indicators, and there is also a positive and strong correlation between PET, SET and Tmrt indicators, and the exponential regression between them in picnic activities, swimming and sailing is also directional.
Dong, S.-S., and Sun, Y.-L., 2020. Upgrading path and value chain upgrading strategy of China's marine equipment manufacturing industry. In: Qiu, Y.; Zhu, H., and Fang, X. (eds.), Current ...Advancements in Marine and Coastal Research for Technological and Sociological Applications. Journal of Coastal Research, Special Issue No. 107, pp. 157-160. Coconut Creek (Florida), ISSN 0749-0208. The upgrading of Marine Equipment Manufacturing Industry (MEMI) and value chain is of great value to the implementation of the strategy of building a strong marine country and the sustainable development of marine industry economy. Based on this, this paper first studies the upgrading mechanism of China's MEMI, then analyzes the upgrading principle and path of MEMI and value chain, and finally gives the upgrading path and value chain construction strategy of MEMI.
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