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Sustainable Supply Model Design of Public Rental Housing —Case Study of Chongqing

Xiao Li,Xiang Gu,Yue Teng,Pan Li

《工程管理前沿（英文）》 2014年第1卷第4期页码 410-416 doi: 10.15302/J-FEM-2014050

摘要： Public rental housing is an important governmental project. Within the next three years, Chongqing municipal government proposes building 40×10 m of public rental housing to solve the housing problem for 2 million people. Many problems of sustainability have happened in long-term large-scale construction, including gradually-slow renting progress, the shortage of funds, public rental housing community facilities are retrograde, and the selected sites are at the city’s edge. This paper analyzes the Chongqing public rental housing situation from the perspective of sustainable public rental housing supply, putting forward a sustainable supply model that is suitable for Chongqing, and then calculates their portion.

关键词： public rental housing sustainability supply model filtering theory

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REITs 型公共租赁住房租金定价模型设计

王林秀,曾兰,陶飞

《中国工程科学》 2014年第16卷第10期页码 94-99

摘要：

借鉴国外公共租赁住房租金定价经验，制定租金定价策略；在分析房地产投资信托基金（REITs）型公共租赁住房租金构成的基础上，参照普通住房价格制定的基本理论方法，采用综合性定价方法，构建一种面向低收入人群中的相对高收入人群或暂时性低收入人群、兼顾成本及住房特征的科学性定价模型。该定价模型充分考虑到项目建设的直接成本、入住者的差异性需求及大众投资者投资期望，综合多方需求，为科学合理制定租金提供依据。

关键词： REITs 型公共租赁住房住房特征定价方法定价模型设计

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Theoretical Analysis of Public Rental House Supply

Yue Teng,Bo Xu,Xiao Li,Ling Li,Xia-zhi Fang

《工程管理前沿（英文）》 2014年第1卷第4期页码 372-377 doi: 10.15302/J-FEM-2014056

摘要： The public rental house (PRH) plays a significant role in our housing security system. Using the theory of public goods, both government and private enterprises have advantages and disadvantages in supplying the PRH. In order to optimize the present supply system of the PRH, this article introduces the delivery pattern of public and private partnerships (PPP) into the government allocation system, and improves it into public-intermediary-private-partnerships (PIPP), a new supply system through government, private enterprises and intermediary organization cooperation. It helps to better achieve the security role of the PRH in our society.

关键词： PIPP public rental house government supply PPP

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Robust public-private partnerships for joint railway and property development

Ka Fai NG, Hong K. LO, Yue HUAI

《工程管理前沿（英文）》 2017年第4卷第4期页码 437-450 doi: 10.15302/J-FEM-2017068

摘要： The involvement of the private sector in the construction or operation of an infrastructure project may enhance the financial viability of projects, which facilitates the formation of public-private partnership (PPP) for project delivery. PPP exploits the strength of the private sector by shifting certain project risks from the public party to the private sector who can efficiently manage certain risks. In joint railway and housing development, the approach of bundling railway and housing development (R&HD) allows cross-subsidization between immense railway construction cost and profitable housing rental revenue. This approach also provides flexibility in incorporating PPP models by distributing railway and housing revenues and costs and their inherent risks properly to the public and private sectors. Ng and Lo (2015a) developed an evaluation framework for joint railway and property development, which evaluates PPPs based on financial and construction criteria for selecting the best suitable PPP for a particular project. This study, which is based on the framework in Ng and Lo (2015a), aims to examine the robustness of various PPP configurations. This study analyzes the effects of PPP configurations on stakeholders’ risks and returns under population or demand growth and railway construction cost uncertainties. The eventual outcome of particular PPP configurations is also examined. This study also seeks to answer the following questions: How would optimal configuration change under highly volatile population and railway construction cost? Are there PPP configurations that are robust to these uncertainties and those that are sensitive to a particular uncertainty? This understanding is critical for managing risks and facilitating the formation of appropriate PPP for R&HD.

关键词： public-private partnership BFOOD housing and railway development

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Feasibility analysis of mixed-income housing in China

TIAN Ye, BI Xiangyang, LI Dexiang

《结构与土木工程前沿（英文）》 2007年第1卷第3期页码 371-377 doi: 10.1007/s11709-007-0050-y

摘要： In this paper, it is demonstrated that mixed-income housing is a feasible and beneficial pattern nowadays. This pattern is propitious for good living and harmonious development of society. Based on practice, data are gathered from the field, and the social investment and social distance analysis of the social network theory are used from the perspective of cross-disciplinary fields. The hypothesis is tested and the feasible and beneficial characteristics of mixed-income housing are pointed out.

关键词： beneficial distance analysis harmonious development hypothesis perspective

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A model study on affordable steel residential housing in China

Xin CHENG, Xianzhong ZHAO, Yiyi CHEN, Zhenyu LI

《结构与土木工程前沿（英文）》 2012年第6卷第3期页码 288-296 doi: 10.1007/s11709-012-0171-9

摘要： The main research purpose of this paper is to acquire a series of designed concept of “affordable housing” in key geographical areas of East China through the development of innovative, economical, flexible, reproducible and affordable residential houses using intensive steel solutions. Toward this goal, both the residential housing conditions and the development of steel residential building in China are widely investigated. Affordable housing in China is then, based on the investigation, defined as green humanized multi-storey housing comprised of medium-small type dwellings whose construction cost is not much higher than that of traditional reinforced concrete buildings and the maintenance cost is low. Taking this definition as a guiding ideology, detailed architectural and structural design of a steel affordable housing model in terms of a collective housing form with repeatable living units has been carried out. Comparisons of project cost and energy consumption between the designed steel residential housing and the corresponding reinforced concrete building show that the former is not more expensive and consumes less energy than the latter.

关键词： affordable housing energy-saving duplex design pure steel frame economic evaluation

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Energy and environment in Chinese rural housing: Current status and future perspective

Xudong YANG, Yi JIANG, Ming YANG, Ming SHAN,

《能源前沿（英文）》 2010年第4卷第1期页码 35-46 doi: 10.1007/s11708-010-0001-5

摘要： A large scale national survey of energy consumption and indoor environment quality of China’s rural housing was conducted from 2006–2007. The survey covered 15 provinces in northern China and 9 provinces in southern China. The survey data indicate that excessive building energy consumption and poor indoor environment pose significant challenges to the sustainable development of China’s rural housing. Possible causes are analyzed, the current status explained and possible development trends predicted. Strategies for sustainable and environmentally appropriate energy development in rural areas are recommended with an example of the “Zero-Coal, Low Energy Village”.

关键词： rural energy energy-saving sustainability

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CFD evaluation of pressure drop across a 3-D filter housing for industrial gas turbine plants

Fidelis I. ABAM,Samuel O. EFFIOM,Olayinka S. OHUNAKIN

《能源前沿（英文）》 2016年第10卷第2期页码 192-202 doi: 10.1007/s11708-016-0406-x

摘要： This paper investigated the flow distribution and total pressure drop across a designed 3-D filter housing integrated with a 3-stage filtration system using computational fluid dynamics (CFD). The filter housing model was proposed for a heavy-duty industrial gas turbine plant operating at an average ambient temperature of 20°C.The pressure drops across the classes of filters were 652.8 Pa, 2692.2 Pa, 887.8 Pa, 776.2 Pa and 2304.2 Pa for I-GB, GB-GA, GA-FA, FA-HA, and HA-O, respectively. The results obtained indicated an acceptable total pressure drop of 7.2% for the entire filter housing before filter clean-up. Although the CFD simulation result shows that small outlet flow velocity and transonic flows exist at the outlet of the filter housing, the designed filter housing was proved compatible with the studied GT, for inlet flow conditions between 600≤ ≤610 kg/s and 60≤ ≤70 m/s for the air flow rate and velocity, respectively. Furthermore, the designed filter housing could be adopted for the studied GT and locations of Usan and Maiduguri in Nigeria, and other locations with similar environmental conditions.

关键词： computational fluid dynamics (CFD) pressure drop flow distribution filter housing gas turbine

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Gear fault diagnosis using gear meshing stiffness identified by gearbox housing vibration signals

《机械工程前沿（英文）》 2022年第17卷第4期 doi: 10.1007/s11465-022-0713-3

摘要： Gearbox fault diagnosis based on vibration sensing has drawn much attention for a long time. For highly integrated complicated mechanical systems, the intercoupling of structure transfer paths results in a great reduction or even change of signal characteristics during the process of original vibration transmission. Therefore, using gearbox housing vibration signal to identify gear meshing excitation signal is of great significance to eliminate the influence of structure transfer paths, but accompanied by huge scientific challenges. This paper establishes an analytical mathematical description of the whole transfer process from gear meshing excitation to housing vibration. The gear meshing stiffness (GMS) identification approach is proposed by using housing vibration signals for two stages of inversion based on the mathematical description. Specifically, the linear system equations of transfer path analysis are first inverted to identify the bearing dynamic forces. Then the dynamic differential equations are inverted to identify the GMS. Numerical simulation and experimental results demonstrate the proposed method can realize gear fault diagnosis better than the original housing vibration signal and has the potential to be generalized to other speeds and loads. Some interesting properties are discovered in the identified GMS spectra, and the results also validate the rationality of using meshing stiffness to describe the actual gear meshing process. The identified GMS has a clear physical meaning and is thus very useful for fault diagnosis of the complicated equipment.

关键词： gearbox fault diagnosis meshing stiffness identification transfer path signal processing

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Qualitative analysis of direction of public hospital reforms in China

null

《医学前沿（英文）》 2018年第12卷第2期页码 218-223 doi: 10.1007/s11684-017-0534-7

摘要：

Reforms in public hospitals are among the most important improvements in China’s health care system over the last two decades. However, the reforms that should be implemented in public hospitals are unclear. Thus, a feasible direction of reforms in Chinese public hospitals is suggested and reliable policy suggestions are provided for the government to reform public hospitals. The data used in this study were mainly derived from a qualitative study. Focus group discussions and in-depth interviews were conducted in Shanghai, Guangdong, and Gansu between May and December 2014. Government funding accounted for approximately eight percent of the total annual revenue of public hospitals in China, and the insufficient government subsidy considerably affects the operation mechanism of public hospitals. However, solely increasing this subsidy cannot address the inappropriate incentives of public hospitals in China. The most crucial step in setting the direction of reforms in public hospitals in China is transforming inappropriate incentives by implementing a new evaluation index system for directors and physicians in public hospitals.

关键词： public hospital government hospital public funding operation mechanism

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DEVELOPMENT OF AN AUTOMATIC WEIGHING PLATFORM FOR MONITORING BODYWEIGHT OF BROILER CHICKENS IN COMMERCIAL PRODUCTION

《农业科学与工程前沿（英文）》 2023年第10卷第3期页码 363-373 doi: 10.15302/J-FASE-2023510

摘要：

● An automatic weighing system for monitoring bodyweight of broilers was developed.

关键词： automatic weighing weight monitoring floor housing uniformity precision poultry farming

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The Routine and Emergency Coordinated Management of Public Security

Ning Liu

《工程管理前沿（英文）》 2015年第2卷第4期页码 331-338 doi: 10.15302/J-FEM-2015063

摘要： The paper presents a study based on the observation of public security programme situations. Nowadays, public security management is faced with challenges such as the increase in non-traditional safety threats, high occurrence probability, obvious complex chain reactions, high security demand, vulnerable bearing systems and world-wide influences. For the new adapted requirements of public security management, this paper puts forward the concept of the coordinated routine and emergency management, which combines the routine management at normal status and the emergency management at the abnormal status based on the whole process of public security management. This paper analyzes the coordinated management system and establishes the decision-making objectives, decision-making model and constraints. In addition, this paper proposes the basic strategy of achieving the coordinated management of public security.

关键词： public security routine management emergency management coordinated management

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Connecting Information to Promote Public Health

Xue-mei Su,Jia Zhao

《工程管理前沿（英文）》 2016年第3卷第4期页码 384-389 doi: 10.15302/J-FEM-2016054

摘要： With the development of information technology in the past 12 years, China has established the specialized or vertical web-based information systems for data collection of disease and related risk factor. These information systems are described as public health information systems (PHIS) in China. When PHIS has thus evolved in a haphazard and fragmented way under the pressure administrative, economic and legal, local health workers who are overburdened with multiple and time-consuming reporting requirements cannot deliver timely, accurate and complete data. Seeing that the information of disease surveillance is provided by hospitals and health service centers in China and that the development of electronic medical record (EMR) and electronic health record (EHR) occurs under the policy and investment of health since 2009 in China, there should be a connection and data sharing mechanism between EMR (EHR) and PHIS to support public health surveillance and public health decision-making. The paper aims at discussing current status and problems of PHIS in China, making a brief introduction on the blueprint of health information technology in China, exploring solution for interoperability between PHIS and EHR (EMR), and sharing some experiences and lessons from pilot project on automatic notifiable infectious disease reporting.

关键词： public health information system data exchange China

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Changes in public trust in physicians: empirical evidence from China

Dahai Zhao, Zhiruo Zhang

《医学前沿（英文）》 2019年第13卷第4期页码 504-510 doi: 10.1007/s11684-018-0666-4

摘要： Studies examining the trends in public trust in physicians have provided a considerable amount of valuable policy implications for policymakers compared with cross-sectional studies on this topic in many countries. This study investigated changes in public trust in physicians in China based on two cross-sectional national surveys conducted in 2011 and 2016 and identified the determinants of these changes. The results indicated 83.4% of respondents in 2011 reported trust or strong trust in physicians in China, which decreased to 64.2% by 2016. The results of ordinal logistic regression demonstrated that public trust in physicians in China had decreased significantly from 2011 to 2016 ( <0.001) after adjusting for other independent variables. Self-reported health status, self-rated happiness, and self-identified social class were all associated positively with public trust in physicians in China. The results also confirmed that decreasing public satisfaction with the most recent treatment experience was the major determinant of decreasing public trust in physicians in China. The findings of this study suggest that decreasing public trust in physicians deserves considerable attention from national policymakers and that improving satisfaction with treatment experiences would be the most effective strategy for enhancing public trust in physicians in China.

关键词： trust in physicians public trust physician-patient relationship health system performance

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Tender evaluation through efficiency analysis for public construction contracts

Stefan NIEWERTH, Peter VOGT, Markus THEWES

《工程管理前沿（英文）》 2022年第9卷第1期页码 148-158 doi: 10.1007/s42524-020-0119-z

摘要： Given the European Public Procurement Directive 2014/24/EU, policymakers have ordered the inclusion of various criteria, such as the price, life-cycle costs, environmental, and social aspects, in the evaluation of tenders for public construction projects. Consequently, the relevance of non-monetary award criteria has gained significant value. However, the established evaluation formulas, which are used to obtain the best value for money procurement, have resulted in legal disputes. The existing evaluation formulas exhibit mathematical weaknesses, wherein scoring indices do not express economic efficiency adequately. Thus, a conflict is observed between the political requirement of non-monetary award criteria and their evaluation by contracting authorities. To overcome such dilemma, an extensive literature review is conducted. Specifically, this study explores the essential problems of existing evaluation formulas and develops a more reliable method. The technique from the field of efficiency analysis, i.e., Data Envelopment Analysis (DEA), is adopted in this study. For contract awarding, the DEA is extended by introducing a decision theoretical framework. For public procurement, the proposed method combines two advantages. First, the proposed method ensures the derivation of a robust tender ranking given that with respect to clients’ preferences, irrelevant and insufficiently tailored tenders do not influence the scoring. Second, the proposed method supports the intention of policy makers to promote public goals, such as sustainable aspects. By disclosing the strengths and weaknesses of bidders with respect to their competitors, all bidders can obtain a precise overview of their performance regarding the award criteria. In sum, the proposed method allows a targeted improvement of certain criteria values in future tenders and consequently leads to an enhancement of public goals.

关键词： bid evaluation public procurement best value for money data envelopment analysis contractor selection