OALib Journal期刊

ISSN: 2333-9721




2018 ( 17 )

2017 ( 11 )

2016 ( 9 )

2015 ( 155 )


匹配条件: “ Qiaozhi Sang” ,找到相关结果约3227条。
Annual Production Plan of Mine Based on Linear Programming  [PDF]
Shulin Jiang, Zhao Zhang, Qiaozhi Sang
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104651
In order to solve the difficulty of the arrangement of ore production at each mine site during the transition from open pit to underground mining in Shirengou iron mine. Taking the largest amount of mining as the objective function, each deposit storage capacity, ore dilution rate, ore loss rate and grade as the constraints, thus the linear programming model was established and solved by lingo considering the balance between reserve and production ratio. The optimal number of each mining area mining was obtained, providing a theoretical basis for raising the overall economic benefits of mining transition period.
On Preliminary Study of Primary and Secondary Elements Affecting Mechanical Properties of Rebar  [PDF]
Qiaozhi Sang, Fengzhu Yao, Ying Zhang
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104733
The microalloying method is most widely used in the production process of high strength steel bars. However, its cost factor has become the main bottleneck for its difficult promotion. The incomplete structure of analytic hierarchy model is established in this paper to identify the primary and secondary elements affecting the performance and investigate the influence mechanism. The dominance numbers are especially introduced to revise the final weights. Hence under the premise of ensuring the mechanical properties of the steel bars, the cost is controlled by increasing the input of certain elements and reducing the use of other expensive micro-alloying elements.
Green Building and Information Model Construction  [PDF]
Fan Zhang, Qiaozhi Sang, Fengzhu Yao
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104746
Building Information Modeling (BIM) provides a new design method and new career direction—architectural planning. Building planners generally propose project components and overall ideas based on project proposals and basic design information including: space requirements, space scale, space combination, usage, environmental protection, structural modeling, equipment systems, construction area, project investment, and construction cycle—a complete implementation of the project plan, to provide a basis for further green building energy conservation development design.
Exploration of Elements Affecting the Main Properties of Screw Steel  [PDF]
Siwen Li, Qiaozhi Sang, Shuqi Wang, Dianxuan Gong
Open Journal of Applied Sciences (OJAppS) , 2018, DOI: 10.4236/ojapps.2018.85015
Abstract: In order to obtain the main and secondary factors affecting the properties of the screw steel and its correlation, this text constructed a TOPSIS (Technique for order performance by similarity to ideal solution) evaluation system based on entropy weight. First of all, three properties indexes of deformed steel bar are selected: the yield strength, tensile strength and elongation at break after breaking. Secondly, we defined a comprehensive index C which is for measuring the property of thread steel by using TOPSIS method, and then the correlation degree of various chemical elements and comprehensive index C were analyzed. According to the principle that the bigger of coefficient correlation, the greater impact, to draw a conclusion: the main elements that affect the properties of deformed steel bar are C, Ceq, Si and Cr, the secondary factors are Mn, Mo, ALT, Ni, Cu, Cr, S, P and V. Finally, the correlation between various elements was studied by means of correlation analysis, where there was a significant positive correlation between Cu and Cr.
On Analysis of Tangshan Pre-Hospital Service Efficiency Based on Improved Fuzzy-DEA  [PDF]
Qiaozhi Sang, Fengzhu Yao, Shuo Hao, Zhennan Zhang
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104720
An allocation model based on improved Fuzzy-DEA is proposed for Tangshan medical health resource. The membership function is particularly introduced to characterize the non-strict partial order relation of the fuzzy numbers, and the internal form of the unit efficiency values is converted into point values. The variance analysis index system is then used to find factors leading to non-DEA effectiveness and the allocation plan is recommended accordingly: the relevant departments should coordinate the inter-regional resources and optimize the medical staffing level.
Application of Series Formula Method in Optimization Arrangement of Webs  [PDF]
Qiaozhi Sang, Siwen Li, Shuqi Wang, Dianxuan Gong
World Journal of Engineering and Technology (WJET) , 2018, DOI: 10.4236/wjet.2018.63041
Abstract: The expressions of the internal forces of the webs under the vertical loads of the simply supported beam type trusses with vertical and horizontal webs and without vertical webs are studied through the mathematical formula method. The variations of internal forces under different angles and spacings of the webs are simulated. The law of the optimal arrangement of the webs of the parallel-string simple-beam truss is obtained: under the condition that the rigidity of the rod is allowed, the form of no vertical web-type truss and reducing the span distance and inclination of the side span are advisable, which can save materials and reduce the weight as well. This method can be applied to the calculation of internal forces for arbitrary loads and truss forms.
A Focused In Situ Hybridization Screen Identifies Candidate Transcriptional Regulators of Thymic Epithelial Cell Development and Function
Qiaozhi Wei, Brian G. Condie
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0026795
Abstract: Background Thymic epithelial cells (TECs) are necessary for normal T cell development. Currently, one transcription factor, Foxn1 is known to be necessary for the progression of fetal TEC differentiation. However, some aspects of fetal TEC differentiation occur in Foxn1 mutants, suggesting the existence of additional transcriptional regulators of TEC differentiation. The goal of this study was to identify some of the additional candidate transcription factors that may be involved in the specification and/or differentiation of TECs during fetal development. Methodology/Principal Findings We identified candidate fetal TEC transcriptional regulators via data and text mining. From our data mining we selected the transcription factors Foxg1, Isl1, Gata3, Nkx2-5, Nkx2-6 and Sox2 for further studies. Whole mount in situ hybridizations confirmed the expression of these transcription factors within subdomains of the third pharyngeal pouch from E9.5–E10.5. By E11.5 days Foxg1 and Isl1 transcripts were the only mRNAs from this group of genes detected exclusively within the thymus domain of the third pouch. Based on this initial in situ hybridization analysis, we focused on defining the expression of Foxg1 and Isl1 during multiple stages of thymus development and TEC differentiation. We found that Foxg1 and Isl1 are specifically expressed in differentiating TECs during fetal and postnatal stages of thymus development. In addition, we found differential expression of Islet1 and Foxn1 within the fetal and postnatal TEC population. Conclusions/Significance Our studies have identified two developmental transcription factors that are excellent candidate regulators of thymic epithelial cell specification and differentiation during fetal development. Our results suggest that Foxg1 and Isl1 may play a role in the regulation of TEC differentiation during fetal and postnatal stages. Our results also demonstrate heterogeneity of TECs marked by the differential expression of transcription factors, potentially providing new insights into the regulation of TEC differentiation.
Classification of $(n+3)$-dimensional metric $n$-Lie algebras
Qiaozhi Geng,Mingming Ren,Zhiqi Chen
Physics , 2010, DOI: 10.1063/1.3501029
Abstract: In this paper, we focus on $(n+3)$-dimensional metric $n$-Lie algebras. To begin with, we give some properties on $(n+3)$-dimensional $n$-Lie algebras. Then based on the properties, we obtain the classification of $(n+3)$-dimensional metric $n$-Lie algebras.
Examining Human Resource Competencies and Their Relationship to the Success Factors of HR Profession  [PDF]
Choi-Sang Long
Journal of Service Science and Management (JSSM) , 2008, DOI: 10.4236/jssm.2008.13029
Abstract: This study examines competencies of Human Resource (HR) professionals in the manufacturing companies of Malaysia. The Human Resource Competency Survey (HRCS) model is used in this study. The competencies that are examined in this study are business knowledge, strategic contribution, HR delivery, personal credibility and HR technology. All these competencies will be tested whether or not they are significantly related to a firm’s performance. Furthermore, researcher wanted to study the relationship of these competencies with variables such as experience, education level, firm’s size and salary of the sample. The sample employed here consists of HR professionals from Malaysian manufac-turing companies in Johor, the southernmost state of Malaysia.
Inclusion and Argument Properties for Certain Subclasses of Analytic Functions Defined by Using on Extended Multiplier Transformations  [PDF]
Oh Sang Kwon
Advances in Pure Mathematics (APM) , 2011, DOI: 10.4236/apm.2011.14034
Abstract: Making use of a multiplier transformation, which is defined by means of the Hadamard product (or convolution), we introduce some new subclasses of analytic functions and investigate their inclusion relationships and argument properties.

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