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Xiao, Ningchuan

Works: 12 works in 34 publications in 2 languages and 559 library holdings
Genres: Conference papers and proceedings  Geographic information systems 
Roles: Author, Editor
Publication Timeline
Publications about Ningchuan Xiao
Publications by Ningchuan Xiao
Most widely held works by Ningchuan Xiao
GIS algorithms by Ningchuan Xiao( Book )
14 editions published between 2015 and 2016 in English and held by 85 libraries worldwide
The critical algorithms used in GIS are notoriously difficult to both teach and understand. This book address the problem by combining rigorous formal language with example case studies and student exercises
Geographic information science : 7th International Conference, GIScience 2012, Columbus, OH, USA, September 18-21, 2012 : proceedings by Ningchuan Xiao( Book )
10 editions published between 2012 and 2013 in English and held by 50 libraries worldwide
This book constitutes the refereed proceedings of the 7th International Conference on Geographic Information Science, GIScience 2012, held in Columbus, OH, USA in September 2012. The 26 full papers presented were carefully reviewed and selected from 57 submissions. While the traditional research topics are well reflected in the papers, emerging topics that involve new research hot-spots such as cyber infrastructure, big data, web-based computing also occupy a significant portion of the volume
Geographical optimization using evolutionary algorithms by Ningchuan Xiao( Archival Material )
1 edition published in 2003 in English and held by 2 libraries worldwide
The role of pastoralist mobility in foot-and-mouth disease transmission in the far north region of Cameroon by Hyeyoung Kim( file )
1 edition published in 2016 in English and held by 1 library worldwide
Animal and human movements can impact the transmission of infectious diseases. Recent outbreaks of infectious diseases such as Ebola Virus Disease, Middle Eastern Respiratory Syndrome, Severe Acute Respiratory Syndrome, or foot-and-mouth disease (FMD) occur across borders and concurrently in the world. Because the movements of individuals and goods occur globally and frequently, an infectious disease outbreak in one place can be spread throughout the world. Therefore, analyzing and predicting movements is closely related to predicting and preventing the spread of an epidemic. Analyzing historical epidemic data and modeling the spread of an epidemic allow us to prepare for new epidemics in the near future and can also be the basis of a policy decision. Modeling animal and human movements and their impacts, however, presents a significant challenge to disease transmission models because these models often assume a fully mixing population where individuals have an equal chance to contact each other. In reality, movements result in populations that can be best represented as dynamic networks whose structure changes over time as individual movements result in changing distances between individuals within a population. This dissertation models the impact of the movements of mobile pastoralists on FMD transmission in a transhumance system in the Far North Region of Cameroon. I first analyze transhumance survey data to derive mobility rules that can be used to simulate the movements of the agents in the model. I develop an agent-based model coupled with an epidemic model. With the model, I simulate under the different environments and various experiment scenarios to evaluate the impacts of mobile pastoralists’ regular movements and changes in the movement patterns on hypothetical FMD epidemics. My simulation results are validated with empirical data collected by surveying herders over the last four years (2010-2014)
Mapping the census ( Book )
1 edition published in 2010 in English and held by 1 library worldwide
Meng li chan da, yin xiang teng chong ( Book )
1 edition published in 2011 in Chinese and held by 1 library worldwide
An irrigation decision support tool (IDST) for smallholdings in Tanzania by Peter Cosmas Ngimbwa( file )
1 edition published in 2016 in English and held by 1 library worldwide
Tanzania is located in east Africa and has a population of 51 million people; by 2050 the population is expected to be two and a half times larger. It is one of the poorest countries in the world with per capital annual gross domestic product of $3,000, making it the 188th poorest country in the world. The major source of national income comes from agriculture, which employs about 80 percent of the working age population. Smallholdings dominate agriculture production in Tanzania, each with an average size of 2 hectare. However, only about 25 percent of the arable land is farmed and 0.5 percent is irrigated. The lack of irrigation, poor irrigation practices and poor water management are among the factors that affect crop production for smallholder farmers in Tanzania. Rainfall is variable and uncertain and poor irrigation practices lead to problems such as waterlogging, water loss, and uneven water access in a field. Yields per hectare are about one fifth of those in the United States and half those in India. Many projects by non- government organizations and Kilimo Kwanza (Agriculture First) initiated by the government, have been established to help smallholder farmer to increase their crop production by improving water management, providing education of best farming. practices, including irrigation practices, and aiding in increasing the use of irrigation. However, resources are scarce and there is a need for decision and design tools to improve irrigation practices and having better water management to meet the rising demands of food. Therefore, the focus of this research study was to improve irrigation practices in Tanzania by developing an Irrigation Decision Support Tool (IDST) that: (1) provides guidance on water application and management; (2) plans an irrigation schedule based on soil- moisture conditions of a field; (3) determines if irrigation is viable in a field; and (4) helps farmers to select an appropriate irrigation type to use in their field. The expectation is that using the IDST will improve crop quality and quantity by providing more consistent and more favorable soil-water growing conditions. The IDST includes Geographical Information System (GIS) layers that are selected by the user clicking on a location on a map of Tanzania or entering the coordinates of the location. The main challenges in developing the IDST were creating data layers of climate, soils, crop attributes and irrigation system components for a range of different irrigation practices. The IDST provides specification for a user selected irrigation practice; the irrigation interval, application time and application rate and water needs. Future work will add a cost-benefit analysis
The antenatal urinary tract dilation classification system accurately predicts severity of kidney and urinary tract abnormalities ( file )
1 edition published in 2017 in English and held by 1 library worldwide
Background: Urinary tract dilation (UTD) is a commonly diagnosed prenatal condition; however, it is currently unknown which features lead to benign and resolving or pathologic abnormalities. A consensus UTD classification system (antenatal UTD classification, UTD-A) was created by Nguyen et al. in 2014 [1], but has not yet been validated. Objective: To evaluate the ability of the UTD-A system to identify kidney and urinary tract (KUT) abnormalities, assess whether UTD-A can predict severity of KUT conditions, and perform a cost analysis of screening ultrasound (US). Methods: A retrospective single-center study was conducted at an academic medical center. Inclusion criteria were: neonates in the well or sick nursery who had a complete abdominal or limited renal US performed in the first 30 days of life between January 01, 2011 and December 31, 2013. Data were collected on prenatal US characteristics from which UTD-A classification was retrospectively applied, and postnatal data were collected up to 2 years following birth. Results: A total of 203 patients were identified. Of the 36 abnormal postnatal KUT diagnoses, 90% were identified prenatally as UTD A1 or UTD A2-3. The remaining 10% developed postnatal KUT abnormalities due to myelomeningocele, such as VUR or UTD, which were not evident prenatally. Overall sensitivity and specificity of the UTD-A system was 0.767 (95% CI 0.577, 0.901) and 0.836 (95% CI 0.758, 0.897), respectively, when resolved UTD was counted as a normal diagnosis. Postnatal diagnoses differed by UTD-A classification as shown in the Summary fig. Of all the obstructive uropathies, 90.9% occurred in the UTD A2-3 class and none occurred in UTD-A Normal. Rate of postnatally resolved UTD was significantly higher in the UTD A1 group (78%) compared with UTD A2-3 (31%) or UTD-A Normal (12%, all P < 0.001). There was a notable trend towards more UT surgeries, UTI, and positive VUR among UTD A2-3 patients, but statistical significance was limited by a small number of patients. Conclusions: This study found that the UTD-A classification system revealed important differences in the severity of UTD abnormalities. With repeated validation in larger cohorts, the UTD-A classification may be used to offer a prognosis for parents regarding prenatally diagnosed KUT conditions. Larger prospective studies should be designed to validate whether the UTD-A system can predict postnatal events related to UTD morbidity such as need for UT-related surgery or UTI. Summary Fig Distribution of postnatal diagnoses by the indication for postnatal ultrasound. KUT, kidney and urinary tract; MCDK, multicystic dysplastic kidney; UTD, urinary tract dilation
A process-comprehensive simulation-optimization framework for watershed scale wetland restoration planning by Grey Rogers Evenson( file )
1 edition published in 2014 in English and held by 1 library worldwide
Wetlands provide an array of important ecosystem services yet exhibit a continuously declining resource stock. Restoration efforts that mean to maintain or reserve wetland losses via ecosystem construction or rehabilitation frequently fail. These restoration failures are commonly attributed to the devaluation of an array of watershed scale processes as impacting restoration outcomes. Watershed scale restoration planning methods have been advocated as a means of prioritizing restoration sites within a landscape-context to account for these processes and thereby improve upon the probability of restoration success. These methods, however, have evolved within distinct literatures to emphasize only certain process as impacting restoration priorities. Established wetland restoration planning procedures are therefore incapable of evaluating the full suite of processes impacting restoration outcomes. This dissertation proposes a generalized simulation-optimization framework to prioritize wetland restoration sites while evaluating hydrologic, climatic, geomorphologic, biologic and human processes. This dissertation demonstrates the an implementation of the framework for the approximately 400 km 2 Sandy Creek Watershed in Northeast Ohio. A genetic algorithm (GA) is coupled with the Soil and Water Assessment Tool (SWAT) and a graph-theory based wetland network model evaluated by both overland and hydrologic connectivity metrics. Four objective functions are defined to discover restoration plans that maximize peak flow reductions, minimize plan cost, maximize inter-wetland hydrologic connectivity, and maximize inter-wetland overland connectivity. Execution of the planning procedure reveals trade-off and non-correlative relationships between multiple objectives and associated process. Evaluation of the evaluated objective functions in isolation, as is characteristic of established planning procedures, may therefore propagate inefficient plans that induce additional restoration failures. The methodology demonstrated within this dissertation represents an important advance in wetland restoration planning methods that will improve wetland restoration outcomes while evaluating interrelationships between processes as relevant to wetland ecosystems
An integrated approach to modeling grazing pressure in pastoral systems : the case of the Logone floodplain (Cameroon) by Mark Moritz( Article )
1 edition published in 2010 in English and held by 1 library worldwide
An integrated model for cypress swamp regeneration in southern Illinois by Ningchuan Xiao( Archival Material )
1 edition published in 1999 in English and held by 1 library worldwide
Herding contracts and pastoral mobility in the far north region of Cameroon by Mark Mortiz( Article )
1 edition published in 2015 in English and held by 1 library worldwide
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Alternative Names
Ningchuan Xiao.
Xiao, N.
Xiao, N. (Ningchuan)
English (33)
Chinese (1)
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