GIS-Hydrogeochemical Model of the YaoundéFractured Rock Aquifer, Cameroon: Aquifer Setting, Seasonal Variations in Groundwater-Rock Interaction and Water Quality

This study of the gneiss-fractured-rock aquifer in Yaoundé capital of Cameroon determines: the aquifer setting-flow systems, the aquifer type, seasonal variations in rock-water interactions, evolution of the hydrogeochemical processes, physicochemical parameters and the suitability for domestic-agro-industrial use of the groundwater. Physicochemical field tests were carried out on 445 wells during four seasons for EC, pH, TDS, Temperature and static water level from July 2016 to May 2017. 90 well samples were analyzed 45 samples per season: wet/dry. 38 borewell logs were used together with structural data to determine the aquifer setting. The field physico-chemical and laboratory analysis data of well samples were mounted unto various GIS software platforms: Global mapper, AqQa, Aquachem, Rockworks, Logplot7, Surfer and ArcGIS, to get indices/parameters/figures, by use of Durov’s, Piper’s and Gibbs diagrams, Water quality index WQI, USSL ratio, Sodium Absorption ratio SAR, Percent sodium %Na, Kelly Ratio KR, Magnesium Absorption Ratio MAR, Total Hardness TH, Residual Sodium Carbonate RSC and Permeability Index PI that were determined. The process of groundwater ions acquisition is three-fold: by recharge through atmospheric precipitation, by ion exchange/simple dissolution between the rock-groundwater and by groundwater mixing in its flow path. Water types are Ca-HCO3, Mg-HCO3 and Mg-Cl while hydrogeochemical facies are Ca-Mg-HCO3 and Ca-Mg-Cl-SO4. Most water samples are fresh, potable and soft all seasons. The hydrogeological conceptual model is that of a three-layered single phreatic fractured-rock-aquifer while other researchers postulated a two-aquifer, phreatic and semi-confined, two-layered model.

A Possible Mechanism of the Impact of Atmosphere-Ocean Interaction on the Activity of Tropical Cyclones Affecting China

In this study, tropical cyclone data from China Meteorological Administration （CMA） and the ECMWF reanalysis data for the period 1958-2001 was used to propose a possible mechanism for the impacts of air- sea interaction on the activity of tropical cyclones （TCs） affecting China. The frequency of TCs affecting China over past 40 years has trended downward, while during the same period, the air sea interaction in the two key areas of the Pacific region has significantly weakened. Our diagnoses and simulations suggest that air sea interactions in the central North Pacific tropics and subtropics （Area 1） have an important role in adjusting typhoon activities in the Northwest Pacific in general, and especially in TC activity affecting China. On the contrary, impacts of the air-sea interaction in the eastern part of the South Pacific tropics （Area 2） were found to be rather limited. As both observational analysis and modeling studies show that, in the past four decades and beyond, the weakening trend of the latent heat released from Area 1 matched well with the decreasing Northwest Pacific TC frequency derived from CMA datasets. Results also showed that the weakening trend of latent heat flux in the area was most likely due to the decreasing TC frequency over the Northwest Pacific, including those affecting China. Although our preliminary analysis revealed a possible mechanism through which the air sea interaction may adjust the genesis conditions for TCs, which eventually affect China, other relevant questions, such as how TC tracks and impacts are affected by these trends, remain unanswered. Further in-depth investigations are required.

A model study on the stacking interaction of phenanthroline ligand with nucleic acid base pairs: An ab initio, MP2 and DFT studies

The stacking of phenanthroline(phen) ligand within base pair sequences is one of the important factors for the stabilization of metalphen complex within DNA. The stacking ability of this ligand has been assessed to deduce the base pair selectivity as well as to identify the favored region of intercalation. Different level of theories have been used to predict the favorable regions for stacking interaction of phen ligand with base pair, but the results of MP2/6-31+G(d,p) is found to be reasonably good for monitoring such interactions.

Effects of tide-surge interaction and wave set-up/set-down on surge: case studies of tropical cyclones landing China's Zhe-Min coast

Storm surge along the China＇s Zhe-Min coast is addressed using the tightly coupled surge model ofADCIRC＋SWAN. In this study, we primarily focus on the effects of surge-tide interaction and waveset-up/set-down. And the influences of intensity and landing moment of tropical cyclone （TC） arealso presented. The results show that： water elevation without considering tide-surge interactiontends to be underestimated/overestimated when TC lands during astronomical low/high tide;tide-surge coupling effect is more pronounced north of TC track （more than 0.7 m in our cases）;irrelevant to TC＇s intensity, wave set-up south of TC track is negligible because the depth-relatedwave breaking doesn＇t occur in water body blown towards open seas.

Ab Initio Molecular Orbital Calculation on Dinuclear Gold(Ⅰ) Complexes──Metal-Metal Interaction and Electronic Structure of Binuclear Gold(Ⅰ) Complexes with Bridging Bidentate Ligands

The electronic structure and electronic absorption spectra of binuclear Au(Ⅰ) complexes with bidentate phophines and a bidentate ylid ligand have been studied using quasirelativistic pseudopotential ab initio calculations at the HF and MP2 levels by the LANL2DZ basis sets. The electronic properties of the spectral transition and Au(Ⅰ)—Au(Ⅰ) interaction were also discussed.

Intensive TB Case Finding in Unsafe Settings: Testing an Outreach Peer Education Intervention for Increased TB Case Detection among Displaced Populations and Host Communities in South-Kivu Province, Democratic Republic of Congo

Introduction: The Democratic Republic of Congo (DRC) is one of the high-burden TB countries in the world. The most affected provinces were North and South Kivu where displacements of the population favor transmission of infections. Delays in diagnosis are often causes for excessive mortality among TB patients. Aim of the Study: The study aimed to test an intervention designed to increase detection of TB cases in internally displaced persons and their host communities in South Kivu province. Methods: The project used a quasi-experimental method, with prospective data collection every six months. Two peri-urban districts were selected and designated as intervention and control districts respectively. Twenty peer educators were selected among prospective TB suspects who sought care in health facilities. The peer educators were trained and encouraged to actively influence, identify and refer potential TB suspects to health centers. The data on new TB suspects seen and cases diagnosed in both districts were collected and compared over two and a half years period. Results: This pilot study has demonstrated that the intervention has had some positive effects on both the number of persons suspected with TB who were diagnosed using either microscopy or clinical assessment. Even in terms of case detection, the study demonstrated that the number of cases detected in the intervention district was at least twice the number of cases detected in the control district. Conclusion: Nonprofessional educators can influence TB case detection even in unstable settings, but their effectiveness is dependent on the security situation. National TB control programs need to adapt community mobilization strategies to local developments even in unsafe settings.

Impress of intergenerational emotional support on the depression in non-cohabiting parents

BACKGROUND Mental health is one of the important dimensions of health,while depression is an important indicator of mental health evaluation.AIM To investigate the association between intergenerational emotional support and depression of non-cohabiting parents(≥45 years old)in China.METHODS We used the fourth wave data from the China Health and Retirement Longitudinal Study(2015).The data was made up of ten main modules,the associated two datasets,and five constructed datasets.The first step is to select the corresponding module data according to the purpose of this study.Moreover,the data of the six modules are integrated by the unique ID code and we choose depression and non-cohabiting items as the selection conditions.4810 samples were selected,which mainly included data on intergenerational emotional support and the individual scores on depressive symptoms.RESULTS The average age of 4810 respondents was(60.56±14.613)years old.Females were accounted for more than half of the samples(52.6%).74.0%respondents from rural areas and approximately 63.3%of the participants had a chronic disease.The mean value of the CESD-10 score was 13.06(SD5.225).Both faces to face and phone contacts were protective factors on depression symptoms in the mid-aged and seniors in China(P<0.05).In terms of the frequency of face to face contact,the more frequently you met your parents,the lower your parents'depressive score was.Also,phone contact variable results are displayed as a positive correlation completely between inter-generational contacts from children and depressive symptoms in non-cohabiting parents in China.Children’s education level and income level were also reducing the risk of depression in noncohabiting parents.However,gender,children’s numerous,chronic disease and chronic disease number were the risk factors.CONCLUSION Intergenerational emotional support is associated with depressive symptoms in non-cohabiting parents in China.However,the relationship was also affected by other variables.

Performance Research on Magnetotactic Bacteria Optimization Algorithm with the Best Individual-Guided Differential Interaction Energy

Magnetotactic bacteria optimization algorithm (MBOA) is a new optimization algorithm inspired by the characteristics of magnetotactic bacteria, which is a kind of polyphyletic group of prokaryotes with the characteristics of magnetotaxis that make them orient and swim along geomagnetic field lines. The original Magnetotactic Bacteria Optimization Algorithm (MBOA) and several new variants of MBOA mimics the interaction energy between magnetosomes chains to obtain moments for solving problems. In this paper, Magnetotactic Bacteria Optimization Algorithm with the Best Individual-guided Differential Interaction Energy (MBOA-BIDE) is proposed. We improved interaction energy calculation by using the best individual-guided?differential interaction energy formation. We focus on analyzing the performance of different parameters settings. The experiment results show that the proposed algorithm is sensitive to parameters settings on some functions.

Synergetic Optimization of Missile Shapes for Aerodynamic and Radar Cross-Section Performance Based on Multi-objective Evolutionary Algorithm

A multiple-objective evolutionary algorithm (MOEA) with a new Decision Making (DM) scheme for MOD of conceptual missile shapes was presented, which is contrived to determine suitable tradeoffs from Pareto optimal set using interactive preference articulation. There are two objective functions, to maximize ratio of lift to drag and to minimize radar cross-section (RCS) value. 3D computational electromagnetic solver was used to evaluate RCS, electromagnetic performance. 3D Navier-Stokes flow solver was adopted to evaluate aerodynamic performance. A flight mechanics solver was used to analyze the stability of the missile. Based on the MOEA, a synergetic optimization of missile shapes for aerodynamic and radar cross-section performance is completed. The results show that the proposed approach can be used in more complex optimization case of flight vehicles.

基于句法依赖增强图的方面级情感分析

方面级情感分析旨在分析句子中特定方面的情感极性,现有研究侧重于利用图神经网络建模上下文与方面的依赖信息,忽略了对上下文中情感词及其词性的挖掘和利用。为此,提出一种基于句法依赖的增强图(syntactic dependency enhancement graph, SDEG)模型,在原始句法依赖图上引入情感知识和词性信息,增强情感词权重和相关词性单词在上下文中的作用。使用双向长短期记忆网络和卷积神经网络捕捉句子的重点语义信息,通过图卷积神经网络建模句法依赖增强图,通过交互注意力机制生成特定方面的上下文语义和语法表示以进行情感极性分类。在多个公共基准数据集上的实验结果表明,所提模型在性能上有明显提升。

Reaction视频中用户弹幕信息交互行为的情感反应生成机理研究

深入挖掘Reaction视频中弹幕信息交互行为的情感反应机理有助于理解用户弹幕创作背后的情感生成原因及情感变化过程。本文基于情感反应模型,利用定向内容分析法对哔哩哔哩网站中11个热门视频的弹幕信息资源、视频内容以及reactor反应情况展开编码研究,构建了Reaction视频中用户弹幕信息交互行为的情感反应生成机理模型。研究发现,Reaction视频弹幕信息交互行为中的情感反应生成机理总体上遵循“信息刺激-情感反应”的路径,信息刺激有时会独立唤醒情绪或特定情感态度,有时也会通过唤醒特定情感态度进而影响情绪或内化情感态度的生成。该模型有助于提升情感反应理论在计算机协助交流中的情境化探索,也将为社交媒体中用户与信息交互提供优化建议。

情感化社交触觉界面的交互原型开发工具设计研究

目的触觉交互是自然人机交互中的热点方向,触觉交互界面具备支持用户之间或人机之间情感交流的潜力。本研究旨在通过开发一种流程化、低门槛、轻成本且可体验的触觉界面原型工具,帮助设计师克服在触觉交互界面设计中的挑战,包括触觉生理学及触觉交互原理等知识基础、设计流程引导和技术开发支持,从而实现更有效的用户实验和设计深化。方法首先,利用参与式设计方法,确定交互设计师在触觉交互界面设计中的主要挑战和核心需求;其次,以此为基础构建触觉交互设计流程引导及情感触觉信号编码界面设计的必要元素,开发支持情感触觉交互原型迭代的硬件工具,并完成原型开发工具的系统设计;最后,通过用户实验中的场景化测试验证初步的气动微流控柔性薄膜阵列的基础情感交互效果,并建立了基础的情感-触觉映射参考效果库。结论本研究开发了触觉界面原型工具,通过系统化的设计流程和简易的操作方式,有助于触觉交互设计师更加灵活便捷地进行设计研究和实践。该工具创新性地提升了触觉界面的设计效率,为情感触觉交互体验设计提供了丰富的可能性。

基于情感交互理论的南昌米粉包装设计

针对南昌特色文化传承欠缺,地域知名度较低的问题,通过南昌米粉包装的创新性设计,宣传南昌米粉品牌和南昌地域文化。包装视觉设计方面,在分析南昌地域和文化特色的基础上,提取相关设计元素;包装情感交互方面,注重结构、容量、图案、色彩等元素对用户情感的体验。最终南昌米粉包装在突出产品特色的同时,将地域文化和用户情感互动完美结合。

基于特征交互的层次分类在线流特征选择

在开放动态环境下的分类学习任务中,数据特征空间具有动态性,标记空间存在层次化结构.现有的层次分类在线流特征选择算法可以选择较优的特征子集,但这些算法忽略了特征之间存在的交互作用.基于此,提出了一种基于特征交互的层次分类在线流特征选择算法.首先,设计了一种基于层次邻域依赖度去判断特征交互的计算方法;其次,针对层次化结构数据,根据层次结构中不同节点间的兄弟关系定义邻域粗糙集模型;最后,设计了具有在线重要性分析、在线冗余性分析以及在线交互性分析的层次分类在线流框架,用于选择强相关和存在交互作用的特征子集.在6个层次数据集上的实验验证了所提算法具有较优的综合性能.

面向智能座舱的情感计算框架及其交互设计研究

目的分析和总结情感计算在智能座舱中的应用研究现状,探究情感化座舱交互系统的设计方法与流程。方法结合情绪在驾驶体验方面的影响,对情感计算在座舱场景中的应用进行总结;从情感识别技术、情感调节策略、多模态交互流程三个方面阐述情感化交互设计的原则与方法。结果提出了基于情感计算的智能座舱交互系统,并从两个具体驾驶场景对调节新手驾驶员负面情绪的座舱交互设计进行了实践。结论应用合适的情感识别技术有利于提升座舱安全性和舒适性,基于情感计算的智能座舱交互系统为设计实践提供了新的思路和方法。