Kyabwanswa Rural Integrated Farming Systems(KRIFS)is a Community Based Organization(CBO)with its Head Office in Kitagwenda Town Council.KRIFS quartet model involves emphasis of integrating four agricultural activities...Kyabwanswa Rural Integrated Farming Systems(KRIFS)is a Community Based Organization(CBO)with its Head Office in Kitagwenda Town Council.KRIFS quartet model involves emphasis of integrating four agricultural activities namely:Apiculture,agro-forestry,coffee and at least one type of livestock.The paper utilizes data obtained from January 2017 surveys,interviews,focus group discussions and observations by the authors.The authors observe that the four activities are symbiotic income generating enterprises.The quartet model has greatly contributed in reducing poverty,increasing agricultural productivity,facilitating value addition,conserving the environment,halting biodiversity loss and mitigating climate change.The model is strongly hinged on training of farmers in organized groups more especially the youth and the women.The involvement of KRIFS in integrated farming that involves introducing new innovations to improve production and productivity in agriculture through improved breeds of livestock and crops as well as environmental conservation being pivotal in its operations,has culminated to agro-tourism in the district.The authors recommend that the model be implemented in the whole of Uganda.Apiculture should be included in the priority commodity list for the parish model.Agro-tourism is yet another economic activity that should be exploited to reduce unemployment,conserve the environment and reduce effects of climate change.展开更多
We consider a three-electron system in the Impurity Hubbard model with a coupling between nearest-neighbors. Our research aim consists of studying the structure of essential spectrum and discrete spectra of the energy...We consider a three-electron system in the Impurity Hubbard model with a coupling between nearest-neighbors. Our research aim consists of studying the structure of essential spectrum and discrete spectra of the energy operator of three-electron systems in the impurity Hubbard model in the quartet state of the system in a <em>v</em>-dimensional lattice. We have reduced the study of the spectrum of the three-electron quartet state operator in the impurity Hubbard model to the study of the spectrum of a simpler operator. We proved the essential spectra of the three-electron systems in the Impurity Hubbard model in the quartet state is the union of no more than six segments, and the discrete spectrum of the system is consists of no more than four eigenvalues.展开更多
目前对四参数随机生长法(quartet structure generation set ,QSGS)建模参数与多孔介质模型分形维数之间的关系缺乏定量化的研究,参数的选择较随意。提出了一种生长核分布概率归一化处理方法,在此基础上探讨了QSGS法中模型尺寸、孔隙率...目前对四参数随机生长法(quartet structure generation set ,QSGS)建模参数与多孔介质模型分形维数之间的关系缺乏定量化的研究,参数的选择较随意。提出了一种生长核分布概率归一化处理方法,在此基础上探讨了QSGS法中模型尺寸、孔隙率、归一化生长核分布概率P_(η)等对多孔介质模型分形维数的影响,并建立了多元回归预测模型。结果表明:多孔介质模型分形维数随着模型尺寸、归一化生长核分布概率P_(η)的增大而增大;综合考虑建模的稳健性及精细程度,建议模型尺寸范围为300×300~600×600;当孔隙率较小时,P_(η)取值0.08左右较为合理,当孔隙率较大时,建议P_(η)取值0.02左右;多元回归能够有效拟合QSGS法建模参数与多孔介质模型分形维数之间的关系。相关成果对多孔介质的建模有一定的指导意义。展开更多
We consider a five-electron system in the Hubbard model with a coupling between nearest-neighbors. The structure of essential spectrum and discrete spectrum of the systems in the third and fourth doublet states in a &...We consider a five-electron system in the Hubbard model with a coupling between nearest-neighbors. The structure of essential spectrum and discrete spectrum of the systems in the third and fourth doublet states in a <em>v</em>-dimensional lattice is investigated. We prove that the essential spectrum of the system in a third doublet state consists is the union of at most four segments, and discrete spectrum of the system is empty. We show that the essential spectrum of the system in a fourth doublet state consists of the union of at most seven segments, and discrete spectrum of the system consists of no more than one point.展开更多
基金Thanks to SIDA through the BREAD project that funded the survey for the primary data collection in 2017Special thanks go to Uganda Geographical Association(UGA)that funded the authors to attend the 1st International Conference on Geographical Science for Resilient Communities,Ecosystems and Livelihoods under Global Environmental Change(GORILLA).
文摘Kyabwanswa Rural Integrated Farming Systems(KRIFS)is a Community Based Organization(CBO)with its Head Office in Kitagwenda Town Council.KRIFS quartet model involves emphasis of integrating four agricultural activities namely:Apiculture,agro-forestry,coffee and at least one type of livestock.The paper utilizes data obtained from January 2017 surveys,interviews,focus group discussions and observations by the authors.The authors observe that the four activities are symbiotic income generating enterprises.The quartet model has greatly contributed in reducing poverty,increasing agricultural productivity,facilitating value addition,conserving the environment,halting biodiversity loss and mitigating climate change.The model is strongly hinged on training of farmers in organized groups more especially the youth and the women.The involvement of KRIFS in integrated farming that involves introducing new innovations to improve production and productivity in agriculture through improved breeds of livestock and crops as well as environmental conservation being pivotal in its operations,has culminated to agro-tourism in the district.The authors recommend that the model be implemented in the whole of Uganda.Apiculture should be included in the priority commodity list for the parish model.Agro-tourism is yet another economic activity that should be exploited to reduce unemployment,conserve the environment and reduce effects of climate change.
文摘We consider a three-electron system in the Impurity Hubbard model with a coupling between nearest-neighbors. Our research aim consists of studying the structure of essential spectrum and discrete spectra of the energy operator of three-electron systems in the impurity Hubbard model in the quartet state of the system in a <em>v</em>-dimensional lattice. We have reduced the study of the spectrum of the three-electron quartet state operator in the impurity Hubbard model to the study of the spectrum of a simpler operator. We proved the essential spectra of the three-electron systems in the Impurity Hubbard model in the quartet state is the union of no more than six segments, and the discrete spectrum of the system is consists of no more than four eigenvalues.
文摘目前对四参数随机生长法(quartet structure generation set ,QSGS)建模参数与多孔介质模型分形维数之间的关系缺乏定量化的研究,参数的选择较随意。提出了一种生长核分布概率归一化处理方法,在此基础上探讨了QSGS法中模型尺寸、孔隙率、归一化生长核分布概率P_(η)等对多孔介质模型分形维数的影响,并建立了多元回归预测模型。结果表明:多孔介质模型分形维数随着模型尺寸、归一化生长核分布概率P_(η)的增大而增大;综合考虑建模的稳健性及精细程度,建议模型尺寸范围为300×300~600×600;当孔隙率较小时,P_(η)取值0.08左右较为合理,当孔隙率较大时,建议P_(η)取值0.02左右;多元回归能够有效拟合QSGS法建模参数与多孔介质模型分形维数之间的关系。相关成果对多孔介质的建模有一定的指导意义。
文摘We consider a five-electron system in the Hubbard model with a coupling between nearest-neighbors. The structure of essential spectrum and discrete spectrum of the systems in the third and fourth doublet states in a <em>v</em>-dimensional lattice is investigated. We prove that the essential spectrum of the system in a third doublet state consists is the union of at most four segments, and discrete spectrum of the system is empty. We show that the essential spectrum of the system in a fourth doublet state consists of the union of at most seven segments, and discrete spectrum of the system consists of no more than one point.
