Analysis of the Energy and Environmental Sustainability of a Built Space System: The Case of Patte d’Oie University Campus in Ouagadougou

The aim of this study was to carry out a dynamic simulation of the energy and environmental performance of a built space system, with a view to assessing its energy and environmental class. The use of a simulation and modeling tool, supported by various methodological references, formed the basis of our approach. Adopting a systemic perspective, we described the structural and functional aspects of the systems making up built spaces, as well as the associated energy flows. Our approach was also based on a typology, taking into account typical days, structural and functional configurations at different scales and angles of observation. The analysis tool we developed in Java was applied to the built space system of the Patte d’Oie university campus in Ouagadougou. Annual electricity consumption was measured at 124387.34 kWh, closely aligned with the average annual electricity bill (125224.31 kWh), with a maximum relative deviation of 1%, followed by a carbon emission balance of 58337.66 kg eq CO2 per year. This validation confirmed the effectiveness of our tool. In addition, following the analysis of electricity consumption using our tool, the university campus was classified in energy class B and environmental class C. These results will be based on the emission factors of the energy mix of the West African Economic and Monetary Union (WAEMU) territory, with particular emphasis on Burkina Faso.

Solving Neumann Boundary Problem with Kernel-Regularized Learning Approach

We provide a kernel-regularized method to give theory solutions for Neumann boundary value problem on the unit ball. We define the reproducing kernel Hilbert space with the spherical harmonics associated with an inner product defined on both the unit ball and the unit sphere, construct the kernel-regularized learning algorithm from the view of semi-supervised learning and bound the upper bounds for the learning rates. The theory analysis shows that the learning algorithm has better uniform convergence according to the number of samples. The research can be regarded as an application of kernel-regularized semi-supervised learning.

Urban Green Spaces and an Integrative Approach to Sustainable Environment

This paper explains the benefits and challenges of urban green spaces based on the critical discussion of study results from different studies in different cities. The important roles played by green spaces are social, economic, cultural and environmental aspects of sustainable development. Urban green spaces can be a comprehensive tool for long term protection of environmental sustainability through improving the quality of life and air quality, increasing property value due to their amenity and aesthetic characteristics, and reducing the energy costs of cooling buildings. Urban green spaces also can provide ecosystem services in which the recreation and relaxation facilities are especially available to urban dwellers and tourists too. To confirm the multiple roles played by green spaces, certain level of qualitative improvements and distribution of green spaces within the urban area should be considered and incorporated effectively into the environmental sustainability agenda. To do this, an integrated approach regarding the planning, monitoring, designing and maintaining of urban green spaces is required for improving the environmental sustainability in cities in different countries.

Monte-Carlo based cascade control approach with focus on real overactuated space systems

The present research relies on a cascade control approach through the Monte-Carlo based method in the presence of uncertainties to evaluate the performance of the real overactuated space systems.A number of potential investigations in this area are first considered to prepare an idea with respect to state-of-the-art.The insight proposed here is organized to present attitude cascade control approach including the low thrust in connection with the high thrust to be implemented,while the aforementioned Monte-Carlo based method is carried out to guarantee the approach performance.It is noted that the investigated outcomes are efficient to handle a class of space systems presented via the center of mass and the moments of inertial.And also a number of profiles for the thrust vector and the misalignments as the disturbances all vary in its span of nominal variations.The acquired results are finally analyzed in line with some well-known benchmarks to verify the approach efficiency.The key core of finding in the research is to propose a novel 3-axis control approach to deal with all the mentioned uncertainties of space systems under control,in a synchronous manner,as long as the appropriate models in the low-high thrusts are realized.

Assessment of the muscle injury, inflammatory response and bone metabolism after paravertebral muscle space and minimally invasive percutaneous approach surgeries for thoracolumbar fracture

Objective: To study the muscle injury, inflammatory response and bone metabolism after paravertebral muscle space and minimally invasive percutaneous approach surgeries for thoracolumbar fracture. Methods: A total of 92 patients with thoracolumbar fractures who were treated in Baoji Central Hospital between May 2015 and January 2017 were selected and randomly divided into paravertebral group and minimally invasive percutaneous group who accepted pedicle screw fixation under different approaches. Before operation as well as 1 d and 3 d after operation, serum was collected to determine the contents of creatase, inflammatory reaction molecules and bone metabolism indexes. Results: Serum Myo, CK, LDH, TNF-α, MCP-1, HMGB-1, CRP, IL-1β, OC, OPG, PICP and PINP levels of both groups 1 d and 3 d after operation were significantly higher than those before operation while TRACP5b, RANKL, CTX and NTX levels were significantly lower than those before operation, and serum Myo, CK, LDH, TNF-α, MCP-1, HMGB-1, CRP, IL-1β, TRACP5b, RANKL, CTX and NTX levels of paravertebral group 1 d and 3 d after operation were significantly lower than those of minimally invasive percutaneous group while OC, OPG, PICP and PINP levels were significantly higher than those of minimally invasive percutaneous group. Conclusion:Paravertebral muscle space surgery for thoracolumbar fracture is more effective than minimally invasive percutaneous surgery in reducing muscle injury and inflammatory response, and improving bone metabolism.

Investigation of the direct microsurgery of ICCA aneurysms via the carotid artery-cavernous sinus space approach

Objective To discuss the approach and technique of the direct microsurgery of intracavemous sinus carotid artery aneurysms (ICCAAns). Methods All the 15 cases of ICCAAns underwent the direct microsurgery via the carotid artery-cavernous sinus space approach. Results Immediate carotid arteriography after the surgery showed that the aneurysms disappeared and the carotid artery could be showed clearly and normall. In a follow up period ranged frcm 1 months to 9 years,it was showed that,among 5 cases with 333,IV,V a,VI nerve paralysis before the surgery, three completely recovered,one recovered incompletely. All patients regained the capability of undertaking mormal cativities. None experienced rebleeding or neuroparalysis. Conclusion Direct microsurgery via this is approach is an ideal treatment of ICCAAns. 6 refs.

基于光学成像探测的仅测角高轨空间物体接近感知方法

提出一种仅利用任务航天器光学成像探测设备给出的测角信息进行高轨空间物体接近行为感知的方法。首先,分析了空间物体相对任务航天器的方位变化规律,得到物体接近时在任务航天器轨道坐标系下方位角正切值随时间波动幅值逐渐增大;其次,分析了在光学成像探测设备成像过程中,逆光与探测设备灵敏度对空间物体可见性的影响,得到物体可见弧段在每个轨道周期内具有一定的相似性;进一步地,根据物体相对方位及可见性的变化规律,设计了一种空间物体接近行为感知方法,利用物体观测量的轨道周期一致性进行多段观测量关联,拟合方位角正切值随时间波动趋势,预测波动极值并统计极值变化规律,实现物体接近行为感知;最后,仿真验证了该方法具备不依赖距离信息感知高轨空间物体相对任务航天器接近行为的能力,仅利用3个轨道周期内、每周期有效弧段大于30 min的高轨空间物体指向测量信息判断物体相对任务航天器存在接近行为的准确率优于96%。结果证明:该方法通过赋能任务航天器常用光学成像探测设备高效费比地实现航天器自我防护能力有效提升,可普遍用于高轨航天器任务。

椎旁肌间隙入路椎弓根螺钉内固定结合伤椎置钉方案对脊柱骨折患者伤椎恢复及疼痛的影响

目的探究椎旁肌间隙入路椎弓根螺钉内固定结合伤椎置钉方案对脊柱骨折患者伤椎恢复及疼痛的影响。方法选取首都医科大学附属北京安贞医院2021年5月至2023年5月收治的50例脊柱骨折患者。采用抽签法将患者分为对照组和观察组,各25例。对照组采用棘突旁入路椎弓根螺钉内固定联合伤椎置钉治疗;观察组采用椎旁肌间隙入路椎弓根螺钉内固定结合伤椎置钉治疗。比较2组围手术期指标、疼痛度、椎体前缘高度改善状况、Cobb′s角、血清骨代谢指标水平、创伤因子水平。结果观察组术中出血量、手术时间、术后卧床时间、术后引流量、术后住院时间均少于/短于对照组,术后3 d疼痛视觉模拟量表评分低于对照组(均P<0.001)。术后3 d、3个月,观察组椎体前缘高度[(14.0±1.3)cm比(11.7±1.2)cm、(15.4±1.7)cm比(12.8±1.3)cm]、Ⅰ型前胶原氨基端前肽水平均高于对照组,Cobb′s角均小于对照组、Ⅰ型胶原羧基末端肽水平均低于对照组(均P<0.001)。术后3 d,观察组肌红蛋白、乳酸脱氢酶、肌酸激酶水平均低于对照组(均P<0.05)。结论椎弓根螺钉内固定结合伤椎置钉方案中使用椎旁肌间隙入路临床疗效更佳,具有手术切口小、时间短和恢复快的特征,且有助于患者伤椎恢复,减少疼痛,促进骨愈合。

大食物观下耕地用途管制的法制优化

耕地用途管制法制优化是在不改变耕地农用的基础上的耕地用途管制的法制优化,即耕地农作物转换种植管制的法制优化。梳理耕地用途管制的措施,探讨大食物观背景下耕地用途管制的法制优化方向及难点,重点阐述大食物观与既有耕地用途管制措施的耦合、既有耕地用途管制与大食物观的匹配度分析以及耕地用途管制优化的法治路径。结果表明:我国农产品需求结构发生变化已经成为不可逆转的趋势,而现有的耕地用途管制措施在一定程度上已经不能适应我国农产品需求结构的变化所带来的农产品供给结构的变化,因此需要对耕地用途管制进行法制优化,推动农产品供给侧结构性改革进一步深化发展,以改善耕地利用不平衡、不充分的现状,使耕地资源利用满足人们食物需求结构的变化。

基于情境法的高校宿舍柜类家具收纳空间优化设计——以桂林理工大学为例

运用情境法对中国高校宿舍柜类家具收纳空间进行优化设计,为大学生解决常见宿舍收纳空间问题。采用实地调研法、无结构式访谈法,建立典型人物角色模型,以此模拟大学生在日常宿舍生活中遇到的收纳问题,借助情境分析解决大学生对宿舍柜类家具收纳空间的需求,并根据获得的需求进行设计实践。设计出满足当代大学生需求的宿舍柜类家具,在具备满足收纳空间大、功能分区明确等需求的同时兼备舒适性。运用情境法发现当代高校宿舍柜类家具使用痛点,进行系统性优化设计。在设计实践中将家具的使用空间进行最大化利用,深化功能分区,并结合人机工程学知识,设计出具备舒适性、功能性且有强大收纳空间的学生宿舍柜类家具。

信息化背景下的医院建筑空间转型与设计应对——基于流空间视角

在信息化背景下,针对医院数字与物质空间并存互构的特点,采用流空间理论视角,以信息流、人流和物流为要素,建立医院流空间的构成与转型分析框架,并阐释了其信息化转型机制:在社会经济效益的支配下,医院流要素发生数字迁移,产生数字投影空间,并引发功能网络转型,从而在流空间逻辑下改变空间节点分布状态,使医院空间呈现出“多义化节点空间”和“分布式形态结构”等典型形态,具有去中心、碎片化和不稳定特点。在此基础上,进一步从优化功能空间组织、调整空间面积配置和保留适当的灵活性3个方面探讨了建筑设计应对思路,指出“划分并组织局部中心”将成为新的重要问题,其关键在于合理决策空间节点的分解、分散与重组、重聚,可借助中心性等网络分析来应对。

星空地井一体化探测技术体系在复杂地质条件场地调查中的应用

复杂地质条件下的场地调查往往受地形起伏、断裂构造复杂、水文地质条件变化剧烈、人类工程扰动强烈等因素影响,存在调查范围缺乏科学性、调查尺度与精度难以协同平衡导致总体工作量部署高而高风险区表征精度相对不足。本文通过融合“星空界”、“天空界”、“地表界”、“地下界”技术,在突破单一技术手段片面零散探测的基础上,强调空天地一体化与井下探测技术的有机融合,构建了星空地井一体化探测技术体系。该一体化探测技术在湖北典型污染场地地下水污染调查中得到了有效应用验证,具有全局性视野认知、自组织高效诊断识别、兼具大时空尺度风险筛查与场地尺度分层精细表征等技术优势。此外,采用该一体化探测技术体系在江西赣南边远山区找水打井与地下水源应急供水中得到了应用验证,从技术方法上克服了传统单一方法的不确定性,科学有效地提高了基岩山区水文地质调查找水的成功率与工作效率。地表界调查圈定找水靶区,论证地下水源找水井位;地下界探测应用落地,基岩山区水文地质钻探涌水量达120 m3/d,解决了赣南革命老区季节性缺水的实际问题。作为行业共性关键技术,星空地井一体化探测技术体系在生态环境、自然资源、水利巡查、应急救灾等业务领域应用前景广阔。未来在多技术方法融合、多元异质信息融合及项目应用落地方面有待进一步拓展,天空界无人机航测、地下界分层精细探测新技术新方法等尚需加强研发应用与技术协同。

学习空间赋能教学数字化转型的误区与进路——兼论空间与技术赋能的差异

学习空间如何有效赋能教学数字化转型是当前国际教育领域关注的热点议题,但当前空间赋能陷入了场所论、资源论和工具论误区。该文首先梳理了三种误区的具体表征及其不良后果;其次,主要采用文献研究法,追溯相关研究发现诱发赋能误区的核心原因在于,赋能主体及其主体责任不清,并指出相较“技术赋能”的要素赋能观,“空间赋能”的系统赋能观更有助于推动教学数字化转型;最后,主要采用逻辑思辨法,以学习空间的双重属性和“五维学习设计”为学理构建了空间赋能教学的底层逻辑与实践逻辑,进而聚焦学习场所、学习资源、教学展屏、基础设施、通路式工具、展示区工具六大赋能施力点和场景、标效、内容、互动、过程、决策六大受力点,构建了促进空间走出赋能教学数字化转型误区的实践进路。以期本文能够为教师有效应用学习空间开展数字化教学提供参考。

时空迭嬗视域下数字意识形态安全风险治理的实践进路

数字技术的迭代与应用正推动着以时空迭嬗为表征的时空演变,已成为数字意识形态安全风险治理的技术赋能力量。数字意识形态是数字时代意识形态发展的新形态。数字空间中信息生产方式迭变窒碍社会共识凝聚的风险,话语表达场域迭嬗导致主流意识形态话语表达式微的风险,西方意识形态与不良社会思潮错综交织威胁主流意识形态安全的风险等,其为数字意识形态安全的现实表征。对此,应基于内外环境的迭嬗,通过完善数字信息内容生产,提升数字空间主流意识形态的聚合力;强化数字话语转化,提升数字空间主流意识形态话语引领力;优化数字传播手段,增强数字空间主流意识形态传播力,不断筑牢数字意识形态安全屏障。

Stability analysis of a time-delayed Van der Pol–Helmholtz–Duffing oscillator in fractal space with a non-perturbative approach

The time-delayed fractal Van der Pol–Helmholtz–Duffing(VPHD)oscillator is the subject of this paper,which explores its mechanisms and highlights its stability analysis.While time-delayed technologies are currently garnering significant attention,the focus of this research remains crucially relevant.A non-perturbative approach is employed to refine and set the stage for the system under scrutiny.The innovative methodologies introduced yield an equivalent linear differential equation,mirroring the inherent nonlinearities of the system.Notably,the incorporation of quadratic nonlinearity into the frequency formula represents a cutting-edge advancement.The analytical solution's validity is corroborated using a numerical approach.Stability conditions are ascertained through the residual Galerkin method.Intriguingly,it is observed that the delay parameter,in the context of the fractal system,reverses its stabilizing influence,impacting both the amplitude of delayed velocity and the position.The analytical solution's precision is underscored by its close alignment with numerical results.Furthermore,the study reveals that fractal characteristics emulate damping behaviors.Given its applicability across diverse nonlinear dynamical systems,this non-perturbative approach emerges as a promising avenue for future research.

基于BIM仿真的复杂空间岸坡施工技术应用

为解决内河框架式码头筑岛法施工后期岸坡施工的难题,依托宜春港樟树港区河西作业区综合码头工程,运用BIM技术开展筑岛、填土开挖与岸坡抛石的施工仿真,提出“开挖填土分区作业、水陆协同、护岸抛石自卸与网兜相结合”的技术方案。工程实践表明,与钢平台法相比,筑岛法施工节省总工期约40 d,节约施工成本约700余万元,其中,复杂空间岸坡施工新工艺缩短工期10 d。研究成果可为类似工程提供参考。

不同入路减压内固定术对胸腰椎爆裂骨折患者椎管占位率及神经功能的影响

目的:比较不同入路减压内固定术中对胸腰椎爆裂骨折患者椎管占位率及神经功能的影响。方法:选取厦门市中医院2019年1月—2023年1月收治的80例胸腰椎爆裂骨折患者作为研究对象,根据手术入路不同分为后正中组和椎旁肌组,每组40例。后正中组实施后正中入路减压内固定术,椎旁肌组实施经椎旁肌间隙入路减压内固定术。比较两组手术指标、椎体压缩率、后凸Cobb角、日常生活活动量表(ADL)评分、视觉模拟评分法(VAS)评分、椎管占位率、脊髓神经功能分级。结果:椎旁肌组手术时间较后正中组短,术中失血量较后正中组少(P<0.05)。两组住院时间及术后椎体压缩率、后凸Cobb角、椎管占位率、脊髓神经功能分级比较,差异均无统计学意义(P>0.05)。椎旁肌组术后ADL评分较后正中组高,VAS评分较后正中组低(P<0.05)。结论:后正中入路、经椎旁肌间隙入路减压内固定术均可有效恢复胸腰椎爆裂骨折患者椎体高度,降低后凸Cobb角、椎管占位率,改善脊髓神经功能,但经椎旁肌间隙入路具有耗时短、术中出血少、术后疼痛感轻的优点。

某某省铁路国土空间规划研究编制思路探讨

国土空间规划体系建立以来,相关部门未发布铁路国土空间规划编制指南,本文开展了铁路国土空间规划的编制研究。本文以《某某省铁路国土空间规划研究》项目为例,采取“建立项目库、提出用地规模、摸查空间关系”三步走的研究思路,铁路国土空间规划研究;重点分析铁路与国土空间“三线”的关系,通过对研究思路和方法的论述,以期对编制铁路国土空间专项规划起到一定借鉴作用,同时对铁路线路选线起到一定的指导、参考作用。

内镜辅助在经颈和颈-腮腺径路切除咽旁间隙肿瘤中的应用

目的 探讨内镜在传统经颈和颈-腮腺径路切除咽旁间隙肿瘤中的潜在优势。方法 回顾分析2017年1月—2018年12月就诊于我院并接受经颈和经颈-腮腺径路咽旁间隙肿瘤切除术的87例患者的临床资料。根据术中有无应用内镜分为传统手术组和内镜辅助治疗组。传统手术组共纳入37例,28例采用颈侧径路,9例采用颈-腮腺径路。内镜辅助治疗组共纳入50例,40例采用颈侧径路,10例采用颈-腮腺径路。比较2组患者的临床特征和疗效差异。结果 2组患者术后病理均以良性多见,其中传统手术组35例(94.6%)为良性,内镜辅助治疗组45例(90.0%)为良性。2组患者在手术时间、术中出血量、住院时间、肿瘤全切率和复发率等方面差异均无统计学意义。内镜治疗组中有14例(28%)肿瘤近颅底,而传统手术组仅2例(5.4%),差异具有统计学意义(P<0.01)。结论 在传统手术径路中应用内镜,可以最大限度减少肿瘤破裂、神经损伤和出血等并发症,尤其是对于高位咽旁间隙肿瘤,有助于减小手术创伤,具有较好的美容和神经功能保留等潜在优势。

新时代边疆绿色空间的概念内涵、尺度级联与重构路径

边疆绿色空间是指边疆多元治理主体秉持绿色价值理念,在边疆自然、社会、经济、文化等领域进行“绿化”实践的生态场域,是能够容纳和生产以“绿色”为底蕴的绿色生态、绿色政治、绿色经济、绿色文化等诸多美好要素的空间。边疆绿色空间重构是顺应时代潮流和回应边疆人民美好生活诉求的空间发展策略,也是融入国家整体发展战略,实现边疆高质量发展和绿色转型的必由之道。进入新时代,面对空间要素跨尺度流动持续加速、流动范围不断扩大的发展趋势,应将多尺度空间级联效应纳入我国边疆绿色空间重构的考虑范畴;基于边疆绿色空间尺度重组过程,识别不同空间尺度的发展目标,构建驱动边疆多尺度绿色空间重构的“尺度重组——尺度级联——空间重构”重构策略和重构路径,不断推动边疆多尺度绿色空间的耦合协同发展,构建面向边疆绿色空间可持续发展的多尺度级联福祉保障。