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To begin with, statistics of research journals about learning community of recent three years was made.
All of the teachers are supposed to learn in a group or a community; they are willing to help with each other by sharing teaching materials and resources online.
Table1, Statistics about the Journals of Learning Community Based on CNKI from 2011 to 2013.
It is high time to establish resources database, not only including course materials and knowledge database, but also teachers’ self-made resources, such as PPT, teaching plan, sound materials uploaded to be shared with in the community.
Acknowledgements This work is financially supported by the Science and Research Department of my work unit.

According to the authors, these databases cover most scientific interest journals in the areas of operations management, organizational management, and social sciences.
Genin et al. (2001) [3] report the principle of MRP (Material Requirements Planning) and how did the need for synchronization of the available quantities of materials, components and sub-assemblies in a context of fixed deadlines and stable products.
DATA MANAGEMENT PLANIFICATION CAPACITY MANAGEMENT Orders forecast Finished goods inventory Nomenclatures Inventories raw materials and subassemblies Post load Ranges Global Resource Planning (Factories, Hiring ...)
Procurement Production Distribution Sales § Materials program ; § Supplier selection ; § Cooperation
- Personnel planning; - Ordering materials

In addition, Poisson’s ratio of the resin materials is estimated using Digital Image Correlation (DIC).
Methods and Materials Materials and Sample Preparation.
Hence the authors they have filled in a knowledge gap about these materials.
[23] FormLabs, “Standard Materials for High-Resolution Rapid Prototyping,” pp. 1–3, 2017
Cai et al., “Comparative study on 3D printing of polyamide 12 by selective laser sintering and multi jet fusion,” Journal of Materials Processing Technology, vol. 288. 2021. doi: 10.1016/j.jmatprotec.2020.116882

Materials and Methods Geometries.
The material properties of both materials were adapted from the literature [5, 6] and were considered to be linear elastic, isotropic and homogeneous.
Sarangi, Finite Element Analysis of Femur Fracture Fixation Plates, International Journal of Basic and Applied Biology, 1(1), 2014, 1-5
Doddamani, Characterization of Mechanical Properties of SiC/Ti-6Al-4V Metal Matrix Composite (MMC) Using Finite Element Method, American Journal of Materials Science, 5(3C), 2015, 7-11
Filipović, Computational analysis of hip implant surfaces, Journal of the Serbian Society for Computational Mechanics, 13(1), 2019, 109-119.

Erbium doped tellurite glasses are very interesting materials in the field of basic science and for several photonic applications [10].
All materials were prepared with high purity raw materials (99.99%).
To achieve homogeneity, the liquid materials shaked before poured.
Zainal, Optical properties of ternary tellurite glasses, Materials Science-Poland. 28 (2010) 173-180
Refractive index and optical properties, Journal of Optoelectronics and Advanced Materials. 6 (2004) 747-753

Its specific gravity and strength are one-fifth and five times as large as steel materials, respectively.
Then, the CNF is expected to be used as a composite material [6-8].
Peijs, Review: Current international research into cellulose nanofibres and nanocomposites, Journal of Materials Science, 45 (2010) 1-33
Yano, Production of cellulose nanofibers and their applications, Journal of The Society of Rubber Science and Technology, Japan 85 (2012) 376-381
Kobayashi, An experimental study of fabrication of cellulose nano-fiber composited Ni film by electroplating, Materials Transactions 63 (2022) 821-828

Study on Volume Stability of High Strengthen High Performance Concrete Runxia Hao1, Xiaoyan Guo1 Junmei Zhao2 1.School of Architecture and Civil Engineering, Inner Mongolia University of Science and Technology, Baotou ,China ,014010; 2 School of Resource and Security, Inner Mongolian University of Science and Technology, Baotou, China, 014010 haorx5300630@163.com gxy.jiang@yahoo.com.cn zhao_junmei@sina.com Keywords: high performance concrete; fine mix material; expansibility; air shrinkage ratio; volume stability Abstract.
Specimen preparation and test method Raw material and sample mix proportion.
It illustrate that shrinkage of cement material clean paste occurred in the early days, and preventing shrinkage in the early days of cement material was very important.
Acknowledgements: Innvovation fund of Inner Mongolian University of Science and Technology (code: 2009NC026) References [1] H.J..Ba, X.J.Gao Y..Z.Yang.
[3] Wu Zhong-wei,Lian Hui-zheng.High performance concrete[M]Beijing:China Railway Press [4] Nihal A,ZCanna G,Ergin A.Evaluation of ratio between splitting tensile strength and compressivestrength for concretes up to 120 MPa and its application in strength citerion[J].Aci Materials Journal,2006(1/2):18-24.

In ocean science research, it often requires the integrity of the gas content in samples of seawater.
Fig. 3b is a mesh model of the PTEF coated O-ring which is made from two materials.
Annual Review of Earth Planetary Sciences, 2002, 30：385-491
Journal of Oceanography, 2002. 58: 775-785
CHINESE JOURNAL OF MECHANICAL ENGINEERING. 2011, accepted.

Experimental materials and methods Preparation of adsorbent. 100g of raw CFA was mixed with 1000mL of NaOH solution (3mol/L).
References [1] Li Du and Xiujuan Feng: Journal of Jiangxi University of Science and Technology.
[2] Yi Ren, Lei Wang and Yaru Di: Journal of Xi’ an University of Arts & Science.
Journal of Hazardous Materials.
José: Journal of Hazardous Materials.

Developing humanoids is critically dependent of the use of highly efficient, compact, lightweight actuators and electroactive materials are offering great potential.
This paper reviews the state-of-the-art of humanlike robots, potential applications and challenges, as well as the actuation materials that are used or could be used.
Progress in materials science have led to covering of robots that is increasingly being humanlike.
Many of the EAP materials that are known today have been discovered and emerged in the 1990s.
Bar-Cohen, (Ed.), Proceedings of the SPIE’s Electroactive Polymer Actuators and Devices Conf., 6th Smart Structures and Materials Symposium, SPIE Proc.