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Energy budget and economic analysis in conventional and organic rice production systems and organic scenarios in the transition period in Iran

Hamed MANSOORI, Parviz Rezvani MOGHADDAM, Rooholla MORADI

Frontiers in Energy 2012, Volume 6, Issue 4,   Pages 341-350 doi: 10.1007/s11708-012-0206-x

Abstract: Compared to conventional agriculture, organic agriculture is reported to be more efficient and effective in reducing water and soil pollution, greenhouse gases (GHGs) emission and risk of human health. In additional, field management under organic condition can be useful for increasing energy efficiency. Rice is one of the important crops which are cultivated in two forms, organic and conventional, in Iran. In order to compare the energy efficiency and economic analysis of rice production in organic and conventional systems in Iran, needed information was collected by face-to-face questionnaire in 2011 and three scenarios were designed to predict the changes of energy budget and economic analysis in the transition period that included: 25%, 50% and 75% organic management in rice production. The results showed that all energy indexes were improved in organic rice production compared to conventional condition. Higher values of benefit to cost ratio, gross and net return and lower value of total cost of production were obtained from organic rice production which indicated that the organic management of farm improved economically in comparison with the conventional rice production system. The shares of direct and renewable energies were increased by approach to organic management. Increase in energy efficiency and productivity was predicted for the transition period but decrease trend in economic indexes was projected for this period in all scenarios. The main reason for decreasing economic indexes in organic scenarios was that the market price of organic rice was the same as that of conventional rice in the transition period.

Keywords： energy efficiency     specific energy     net return     Cobb-Douglas function    

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An adaptive policy-based framework for China’s Carbon Capture and Storage development

Xiaoliang YANG, Wolfgang HEIDUG, Douglas COOKE

Frontiers of Engineering Management 2019, Volume 6, Issue 1,   Pages 78-86 doi: 10.1007/s42524-019-0003-x

Abstract:

China’s political leadership has taken an increasingly public and proactive stance on climate change since 2014. This stance includes making a commitment that Chinese carbon dioxide (CO2) emissions will peak around 2030 and enacting measures through the 13th Five-Year Plan to support energy efficiency, clean energy technology, and carbon management. Chinese policymakers consider carbon capture and storage (CCS) a critical bridging technology to help accelerate the decarbonization of its economy. This paper reviews and analyzes Chinese CCS support policies from the perspective of an adaptive policymaking framework, recognizing uncertainty as an inherent element of the policymaking process and drawing general lessons for responding to changing circumstances. Notably, the political support for CCS in China remains fragmented with uncoordinated government leadership, undecided industry players, and even with opposing voices from some leading scientists. There is scope for expanding the framework to provide more granularity, in particular relating to the development of a CCS infrastructure and the development of storage-focused CO2-EOR. Overall, given the role CCS can play to decarbonize China’s power and other industrial sectors, a commitment to CCS from top policymakers and major stakeholders is needed.

Keywords： CCS     policy     climate change     China    

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Erratum to: On secondary new particle formation in China

Veli-Matti KERMINEN,Joni KUJANSUU,Taina RUUSKANEN,Aijun DING,Wei NIE,Min HU,Zhibin WANG,Zhijun WU,Lin WANG,Douglas

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 5, doi: 10.1007/s11783-016-0857-7

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Construction engineering management culture shift: Is the lowest tender offer dead?

Eric SCHEEPBOUWER, Douglas D. GRANSBERG, Carla Lopez del PUERTO

Frontiers of Engineering Management 2017, Volume 4, Issue 1,   Pages 49-57 doi: 10.15302/J-FEM-2017014

Abstract: The procurement of public construction projects must walk a fine line between the corruption of state officials and collusion of contractors. The method of awarding projects to the lowest responsible tenderer was originally implemented to guard against corruption of state officials. However, an investigation of the construction industry in the Canadian province of Quebec showed that lowest-tender-offer procurement gave rise to collusion of companies tendering for the contracts. Alternatively, best-value procurement has been used for decades, but here problems arise owing to the necessity of subjective judging of measures other than price to compare bids, giving rise to time- and money-consuming protests. The paper proposes a compelling argument that the construction engineering management (CEM) culture should refocus its efforts on enhancing project cost certainty rather than merely searching for means to design a project in a manner that produces the lowest initial cost, and awards the construction to the lowest tender offer that focuses on cost savings during the project development and delivery process. The difference in the two approaches is subtle but extremely important. To make the transition, the engineering management tools must be advanced to the next level. This means that all project control tools for managing cost, schedule, and technical scope must be transformed from working in the deterministic mode to the stochastic mode, thus making the probability of completing the project within or below its official budget the primary decision criterion. To do so, CEMs must accept that there is a benefit in paying more for an alternative that increases cost certainty for the entire project. The authors of this paper hope that it will provide the grist for a more general dialog across all industry sectors where engineering management is practiced.

Keywords： cost certainty     lowest responsible bid     best value     public procurement     construction engineering management culture    

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The algorithm and realization of linear feature automatic label placement

Yin Yong,Li Chengming,Ding Shengtao

Strategic Study of CAE 2013, Volume 15, Issue 5,   Pages 30-36

Abstract: reference annotation line and to achieve dynamic segmentation of reference annotation line using reverse Douglas

Keywords： linear elements     automatic annotation configuration     reference line     reverse Douglas algorithm    

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On secondary new particle formation in China

Veli-Matti Kerminen,Joni Kujansuu,Taina Ruuskanen,Aijun Ding,Wei Nie,Min Hu,Zhibin Wang,Zhijun Wu,Lin Wang,Douglas

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 5, doi: 10.1007/s11783-016-0850-1

Abstract: Formation of new atmospheric aerosol particles is a global phenomenon that has been observed to take place in even heavily-polluted environments. In China, new particle production has been observed at very high pollution levels (condensation sink about 0.1s ) in several megacities. A holistic scientific understanding on the atmospheric phenomena associated with air quality as a whole, as well as on the connection between air quality and climate, is lacking at the moment.With a network of observation stations, we will be able to understand the interactions and feedbacks associated with the urban pollution mixture, and ultimately, are ready to make targeted strategies for the pollution control. This paper summaries the recent advances in studying secondary new aerosol formation in China and shows how increased process-level understanding will help us to understand air quality-climate-weather interactions and how the feedbacks and interactions affect the air quality in highly-polluted environments such as those frequently encountered in Chinese megacities. Formation of new atmospheric aerosol particles is a global phenomenon that has been observed to take place in even heavily-polluted environments. However, in all environments there appears to be a threshold value of the condensation sink (due to pre-existing aerosol particles) after which the formation rate of 3 nm particles is no longer detected. In China, new particle production has been observed at very high pollution levels (condensation sink about 0.1 s ) in several megacities, including Beijing, Shanghai and Nanjing as well as in Pearl River Delta (PRD). Here we summarize the recent findings obtained from these studies and discuss the various implications these findings will have on future research and policy.

Keywords： Aerosol particles     Heavily-polluted environments     Condensation sink     New particle production     Megacities    

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Lung function and air pollution exposure in adults with asthma in Beijing: a 2-year longitudinal panel

Frontiers of Medicine 2022, Volume 16, Issue 4,   Pages 574-583 doi: 10.1007/s11684-021-0882-1

Abstract: The effect of air pollution on the lung function of adults with asthma remains unclear to date.The participants were divided into three groups according to their lung function level at every visitA linear mixed-effect model was applied to predict the change in lung function with each unit changeExposure to CO and PM2.5 was negatively associated with the large airway function of adultsPatients with asthma react differently to air pollutants as evidenced by their lung function levels.

Keywords： lung function     asthma     air pollution     adult    

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The function and regulation of OTU deubiquitinases

Jiansen Du, Lin Fu, Yingli Sui, Lingqiang Zhang

Frontiers of Medicine 2020, Volume 14, Issue 5,   Pages 542-563 doi: 10.1007/s11684-019-0734-4

Abstract: These OTUs show great variation in structure and function, which display a series of mechanistic featuresIn this review, we provide a comprehensive analysis of current progress in character, structure and functionFinally, we summarize the structure of viral OTUs and their function in immune escape and viral survival

Keywords： ubiquitin     OTU deubiquitinases     structure     function     regulation    

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Analogue Difference Balanced Function and Its Applications

Zhang Wenying,Li Shiqu

Strategic Study of CAE 2004, Volume 6, Issue 3,   Pages 45-52

Abstract:

This paper presents the concept of analogous difference of Boolean function, and call the Booleanfunction an analogue difference balanced function if whose analogous difference is balanced at any nonzeroof analogue bent functions, the paper proposes an efficient and sufficient condition for a logical function

Keywords： Bent function     perfect nonlinear function     2-radical expansion     analogue difference     analogue auto-correlationfunction     analogue difference balanced function    

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Quality Function Deployment Implementation in Construction: A Systematic Literature Review

Elizabeth A. Cudney,William L. Gillis

Frontiers of Engineering Management 2016, Volume 3, Issue 3,   Pages 224-230 doi: 10.15302/J-FEM-2016036

Abstract: Quality function deployment has been successfully used in product development to capture the voice ofQuality function deployment then carries these parameters into production and service to ensure the voiceThe house of quality, a tool within quality function deployment, can provide a means for comparison ofQuality function deployment can effectively link the project phases through design and construction andThe research method used is a systematic literature review from databases related to quality function

Keywords： construction     engineering management     quality function deployment     systematic review    

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Design and evaluation of a novel biopsy needle with hemostatic function

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0738-7

Abstract: Biopsy is a method commonly used for early cancer diagnosis. However, bleeding complications of widely available biopsy are risky for patients. Safer biopsy will result in a more accurate cancer diagnosis and a decrease in the risk of complications. In this article, we propose a novel biopsy needle that can reduce bleeding during biopsy procedures and achieve stable hemostasis. The proposed biopsy needle features a compact structure and can be operated easily by left and right hands. A predictive model for puncture force and tip deflection based on coupled Eulerian–Lagrangian (CEL) method is developed. Experimental results show that the biopsy needle can smoothly deliver the gelatin sponge hemostatic plug into the tissue. Although the hemostatic plug bends, the overall delivery process is stable, and the hemostatic plug retains in the tissue without being affected by the withdrawal of the needle. Further experiments indicate that the specimens are well obtained and evenly distributed in the groove of the outer needle without scattering. Our proposed design of biopsy needle possesses strong ability of hemostasis, tissue cutting, and tissue retention. The CEL model accurately predicts the peak of puncture force and produces close estimation of the insertion force at the postpuncture stage and tip position.

Keywords： cancer diagnosis     biopsy needle     hemostatic function     predictive model     coupled Eulerian−Lagrangian    

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Regulation and function of histone acetyltransferase MOF

Yang Yang, Xiaofei Han, Jingyun Guan, Xiangzhi Li

Frontiers of Medicine 2014, Volume 8, Issue 1,   Pages 79-83 doi: 10.1007/s11684-014-0314-6

Abstract:

The mammalian MOF (male absent on the first), a member of the MYST (MOZ, YBF2, SAS2, and Tip60) family of histone acetyltransferases (HATs), is the major enzyme that catalyzes the acetylation of histone H4 on lysine 16. Acetylation of K16 is a prevalent mark associated with chromatin decondensation. MOF has recently been shown to play an essential role in maintaining normal cell functions. In this study, we discuss the important roles of MOF in DNA damage repair, apoptosis, and tumorigenesis. We also analyze the role of MOF as a key regulator of the core transcriptional network of embryonic stem cells.

Keywords： MOF     histone acetyltransferase     DNA damage repair     tumorigenesis     embryonic stem cells    

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Transfer function solving, simulating and testing of thermal dynamics characteristics of a ballscrew

Junyong XIA, Bo WU, Youmin HU, Tielin SHI,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2,   Pages 233-241 doi: 10.1007/s11465-010-0014-0

Abstract: Based on the theory of heat transfer, the transfer function between the thermal deformation of any pointsolving the amplitude-frequency characteristics and phase-frequency characteristics of the transfer functionby and large accord with the theoretical analyzing result, which shows that the method of transfer function

Keywords： ballscrew     Laplace transform     transfer function     thermal dynamic characteristics    

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Comparison in executive function in Chinese preterm and full-term infants at eight months

Yao Feng, Hong Zhou, Yan Zhang, Anthony Perkins, Yan Wang, Jing Sun

Frontiers of Medicine 2018, Volume 12, Issue 2,   Pages 164-173 doi: 10.1007/s11684-017-0540-9

Abstract:

Executive function (EF) is increasingly recognized as being responsible for adverse developmental

Keywords： executive function (EF)     preterm infant     working memory     inhibition to prepotent response     inhibition to    

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Calculation of collision frequency function for aerosol particles in free molecule regime in presence

Xiaowei LUO, Yannick BENICHOU, Suyuan YU

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 506-510 doi: 10.1007/s11708-013-0275-5

Abstract: The collision frequency function for aerosol particles has already been calculated for the free molecule

Keywords： aerosol particles     collision frequency function     coagulation    

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Title Author Date Type Operation

Energy budget and economic analysis in conventional and organic rice production systems and organic scenarios in the transition period in Iran

Hamed MANSOORI, Parviz Rezvani MOGHADDAM, Rooholla MORADI

Journal Article

An adaptive policy-based framework for China’s Carbon Capture and Storage development

Xiaoliang YANG, Wolfgang HEIDUG, Douglas COOKE

Journal Article

Erratum to: On secondary new particle formation in China

Veli-Matti KERMINEN,Joni KUJANSUU,Taina RUUSKANEN,Aijun DING,Wei NIE,Min HU,Zhibin WANG,Zhijun WU,Lin WANG,Douglas

Journal Article

Construction engineering management culture shift: Is the lowest tender offer dead?

Eric SCHEEPBOUWER, Douglas D. GRANSBERG, Carla Lopez del PUERTO

Journal Article

The algorithm and realization of linear feature automatic label placement

Yin Yong,Li Chengming,Ding Shengtao

Journal Article

On secondary new particle formation in China

Veli-Matti Kerminen,Joni Kujansuu,Taina Ruuskanen,Aijun Ding,Wei Nie,Min Hu,Zhibin Wang,Zhijun Wu,Lin Wang,Douglas

Journal Article

Lung function and air pollution exposure in adults with asthma in Beijing: a 2-year longitudinal panel

Journal Article

The function and regulation of OTU deubiquitinases

Jiansen Du, Lin Fu, Yingli Sui, Lingqiang Zhang

Journal Article

Analogue Difference Balanced Function and Its Applications

Zhang Wenying,Li Shiqu

Journal Article

Quality Function Deployment Implementation in Construction: A Systematic Literature Review

Elizabeth A. Cudney,William L. Gillis

Journal Article

Design and evaluation of a novel biopsy needle with hemostatic function

Journal Article

Regulation and function of histone acetyltransferase MOF

Yang Yang, Xiaofei Han, Jingyun Guan, Xiangzhi Li

Journal Article

Transfer function solving, simulating and testing of thermal dynamics characteristics of a ballscrew

Junyong XIA, Bo WU, Youmin HU, Tielin SHI,

Journal Article

Comparison in executive function in Chinese preterm and full-term infants at eight months

Yao Feng, Hong Zhou, Yan Zhang, Anthony Perkins, Yan Wang, Jing Sun

Journal Article

Calculation of collision frequency function for aerosol particles in free molecule regime in presence

Xiaowei LUO, Yannick BENICHOU, Suyuan YU

Journal Article