Influence of Parameters on Microstructure of CePO4/ZrO2 Machinable Ceramics

2013 ◽  
Vol 774-776 ◽  
pp. 589-592
Author(s):  
Jing Xu ◽  
Xin Wang
Keyword(s):  
Mixed Method ◽  
Composite Powder ◽  
Application Range ◽  
Machinable Ceramic ◽  
Prepared Composite ◽  
Better Than

Machinable ceramic was widely attended for it could extend application range of ceramic. As a kind of common ceramic, ZrO2 ceramic was used widely, but it was difficult to be machined. CePO4 powder was added into ZrO2 powder to prepare composite powder. In this paper, two dispersion methods were used to prepared composite powder: mechanical mixed method and flocculation of multiphase suspension were used. Composite powder that prepared by mechanical mixed method sintered at 1450°C, 1550°C and 1600°C respectively. SEM was used to study microstructure of samples. Result of SEM showed that microstructure of sample that sintered at 1550°C was better than others, and there was no obviously default was found in it. Effect of mechanical mixed method was better than flocculation of multiphase suspension in this paper.

KARAKTERISTIK PENCAPAIAN KEMAMPUAN PEMBUKTIAN DAN KEPERCAYAAN DIRI MAHASISWA MELALUI METODE MOORE

2018 ◽  
Vol 4 (2) ◽  
pp. 72-82
Author(s):  
Iyon Maryono ◽  
Siska Amanda Lucita Dewi ◽  
Agus Hikmat Syaf
Keyword(s):  
Learning Outcomes ◽  
Mixed Method ◽  
Student Learning Outcomes ◽  
Student Thinking ◽  
Student Responses ◽  
Self Confidence ◽  
Teacher Students ◽  
Thinking Process ◽  
Better Than ◽  
Important Activity

Pembuktian dalam matematika adalah suatu aktivitas yang penting, tetapi aktivitas ini tergolong sulit bagi mahasiswa calon guru matematika. Masalah ini salah satunya dipengaruhi oleh kepercayaan-diri. Tujuan penelitian ini adalah untuk menganalisis karakteristik pencapaian kemampuan pembuktian matematis dan kepercayaan-diri mahasiswa melalui metode Moore. Penelitian ini menggunakan metode campuran bertahap yaitu tahap kuantitatif dan tahap kualitatif. Pada tahap kuantitatif disimpulkan bahwa kemampuan pembuktian pada kelas yang menggunakan metode Moore lebih baik daripada kelas yang menggunakan model pembelajaran langsung. Metode Moore dapat mengungkap proses perkembangan capaian pembelajaran mahasiswa dalam pembuktian, sehingga dosen dapat memberikan umpan balik untuk mengembangkannya. Pada tahap kualitatif, dihasilkan karakteristik kemampuan pembuktian beberapa mahasiswa. Karakteristik ini ditinjau berdasarkan respon mahasiswa terhadap masalah pembuktian. Pada pembelajaran dengan metode Moore, mahasiswa tidak diperbolehkan membuka bahan ajar, sehingga dosen harus mengikuti alur berpikir mahasiswa dan mengarahkan proses berpikirnya. Sebagai implikasi, metode Moore baik digunakan dengan catatan mahasiswa harus belajar terlebih dahulu sebelum pembelajaran di kelas.Proving in mathematics is an important activity, but this activity is classified as difficult for prospective mathematics teacher students. This problem is influenced by self-confidence. The purpose of this study was to analyze the characteristics of achievement of students' mathematical proving ability and self-confidence  through the Moore method. This study uses a phased mixed method, namely quantitative and qualitative stages. In the quantitative stage, it was produced: "Based on the overall and PAM categories, the ability to prove the class using the Moore method is better than the class that uses the direct learning model". Moore's method can reveal the process of developing student learning outcomes in proof, so that lecturers can provide feedback to develop it. In the qualitative stage, the characteristics of the ability of several students are produced. these characteristics are reviewed based on student responses to the problem of proof. In the Moore method of learning, students are not allowed to open teaching materials, so the lecturer must follow the flow of student thinking and direct the thinking process. As an implication of the results of this study, the Moore method is well used with the notes that students must study before learning in class.

Experimental Research on the Mix Proportion Design of the Cement-Clay Composite Powder Mixed Mortar

2012 ◽  
Vol 174-177 ◽  
pp. 1441-1445
Author(s):  
Bin Xue ◽  
Xiao Hong Cong ◽  
Li Xin Wang ◽  
Fei Zhao
Keyword(s):  
Environmental Protection ◽  
Experimental Research ◽  
Composite Powder ◽  
Mix Proportion ◽  
Mixed Mortar ◽  
Better Than ◽  
Design And Application

As a part of the mixed mortar, the admixture is very important in the field of changing the mortar workability and others. In this paper, the clay-composite powder is used as the admixture of the mixed mortar, and the ratio design experimental research is proceeding by adjusting the ratio of the composite powder. A result is obtained by testing and analyzing the performance of the mortar workability, it indicates that clay composite powder can be used directly in the mixed mortar as the admixture, its technical characteristics can meet the requires of design and application, and it is better than the traditional cement-lime mixed mortar in economy, execution, environmental protection and so on.

scholarly journals AN IMPLEMENTATION OF E-LEARNING BASED MOODLE TO DEVELOP MATHEMATICAL COMMUNICATION SKILL AND SELF-EFFICACY

2021 ◽  
Vol 6 (2) ◽  
pp. 207-218
Author(s):  
Linda Astriani ◽  
Dewi Setiyaningsih ◽  
Misriandi Misriandi ◽  
Anggi Yuliani
Keyword(s):  
Data Collection ◽  
Communication Skills ◽  
Mixed Method ◽  
Strong Correlation ◽  
Self Efficacy ◽  
Communication Skill ◽  
Mixed Method Research ◽  
Mathematical Communication ◽  
E Learning ◽  
Better Than

Mathematical communication skills are important, and education should facilitate students to improve their mathematical communication skills. The purpose of this study was to develop e-learning based on Moodle to improve students' mathematical communication and self-efficacy and student self-efficacy and describe how to students’ mathematic communication and student self-efficacy. This study used mixed-method research. The population in this study were Year 5 students at a private primary school. Data collection techniques used in this study are observation and tests. The implementation with Moodle was effective to the students’ mathematic communication and self-efficacy student. Overall, the students’ mathematical communication skills and self-efficacy of students using E-learning based Moodle is better than those using conventional learning. Also, self-efficacy positively affects students' communication skills with a very strong correlation coefficient, meaning that the higher students' self-efficacy, the higher students' communication skills.

scholarly journals Sustainable Livelihood Capital and Strategy in Rural Tourism Households: A Seasonality Perspective

2019 ◽  
Vol 11 (18) ◽  
pp. 4833 ◽  
Author(s):  
Zhen Su ◽  
Joshua R. Aaron ◽  
Yang Guan ◽  
Hongchen Wang
Keyword(s):  
Mixed Method ◽  
Southern China ◽  
Tourism Industry ◽  
Rural Tourism ◽  
Data Envelopment ◽  
Sustainable Livelihood ◽  
Seasonal Fluctuations ◽  
Seasonal Impact ◽  
Capital Efficiency ◽  
Better Than

As an inherent characteristic and pervasive market phenomenon of the tourism industry, seasonality plays an important role in tourist business survivability and sustainability. It is also a significant factor for rural households involved in tourism as they plan their livelihood strategies around it. In this study, household surveys were conducted in The Beautiful South, an area for rural tourism in Guangxi of Southern China. We analyzed the livelihood capital and strategy of different household types in response to seasonal fluctuations in tourism by applying a mixed method that integrated livelihood capital index (LCI) evaluation and data envelopment analysis. The results indicate that LCI of tourism income-oriented households ranks second among the four types of households, while the LCI of tourism-engaged households in peak season performed better than that of those not engaged. However, the number of households participating in tourism nearly halved during the off season, and they are mainly diverted to temporary labor work, which may be one of the reasons for the low livelihood capital efficiency of tourism households. The implications of the findings and empirical solutions to mitigate the negative seasonal impact are discussed.

scholarly journals Is any wheelchair better than no wheelchair? A Zimbabwean perspective

2015 ◽  
Vol 4 (1) ◽  
Author(s):  
Surona Visagie ◽  
Tecla Mlambo ◽  
Judith Van der Veen ◽  
Clement Nhunzvi ◽  
Deborah Tigere ◽  
...  
Keyword(s):  
Mixed Method ◽  
Qualitative Data ◽  
Good Practice ◽  
Professional Services ◽  
Group Discussions ◽  
Wheelchair Users ◽  
Adults And Children ◽  
Service Standards ◽  
Better Than

Background: Within a rights-based paradigm, wheelchairs are essential in the promotion of user autonomy, dignity, freedom, inclusion and participation. Objectives: This paper aimed to describe a group of Zimbabwean wheelchair users’ satisfaction with wheelchairs, wheelchair services and wheelchair function. Method: A mixed method, descriptive study was done. Quantitative data was collected from 94 consecutively sampled wheelchair users, who accessed wheelchair services at 16 clinics in five Zimbabwean provinces between October 2013 and February 2014, using the Quebec User Evaluation of Satisfaction with Assistive Technology for adults and children and Functioning Every day with a Wheelchair questionnaire. Qualitative data were collected through two focus group discussions (22 participants) and two case studies with participants purposively sampled from those who participated in the quantitative phase. Results: More than 60% of participants were dissatisfied with the following wheelchair features: durability (78.6%), weight (75.6%), ease of adjustment (69.1%), effectiveness (69.0%), safety (66.7%), reliability (66.7%), and meeting user needs (60.6%). Similarly, more than 66% of participants were dissatisfied with various services aspects: professional services (69.0%), follow-up (67.0%), and service delivery (68.3%). Although 60% of participants agreed that the wheelchair contributed to specific functions, more than 50% of participants indicated that the features of the wheelchair did not allow in- (53.2%) and outdoor (52.7%) mobility.Conclusion: Findings indicate high levels of dissatisfaction with wheelchair features and services, as well as mobility. It is recommended that policy and minimum service standards which incorporate evidence and good practice guidelines for wheelchair services and management of wheelchair donations are developed for Zimbabwe.

scholarly journals Valuasi Potensi Wilayah Terhadap Minat Menjadi Migran Permanen di Yogakarta

2020 ◽  
Vol 1 (1) ◽  
pp. 1-14
Author(s):  
Edwardus Iwantri Goma
Keyword(s):  
Qualitative Analysis ◽  
Mixed Method ◽  
Research Method ◽  
Quantitative Research ◽  
Single Frequency ◽  
Survey Method ◽  
Depth Interviews ◽  
Better Than

Development disparity between two regions including development disparity of education is one of factors causing students migrate to Yogyakarta. This research was conducted in Yogyakarta with student respondents from NTT members of KESA. This study aims to identify the interests of students from NTT members of KESA becoming permanent migrants in Yogyakarta according to the regional potential valuation. The research method used was a mixed method using a survey method of 43 people and in-depth interviews with seven people. The data collected is presented in the form of: (1) descriptive using single frequency tables and cross tables, and (2) qualitative analysis to strengthen or support quantitative research. The results showed that the interest of students from NTT members of KESA based on the valuation of the potential Yogyakarta region and NTT region is known that most migrants who are interested becoming permanent migrants in Yogyakarta assess the potential of Yogyakarta region is better than potential of NTT region.

Preparation of a novel superhydrophobic PMMA surface with nanostructure and its blood compatibility

e-Polymers ◽  
2012 ◽  
Vol 12 (1) ◽  
Author(s):  
Xiaobo Wang ◽  
Ningbo Yang ◽  
Qi Xu ◽  
Chun Mao ◽  
Xiaomei Hou ◽  
...  
Keyword(s):  
Blood Compatibility ◽  
Platelet Rich Plasma ◽  
Surface Group ◽  
Pmma Film ◽  
Selective Solvent ◽  
Water Contact ◽  
Human Whole Blood ◽  
Application Range ◽  
Pmma Surface ◽  
Better Than

AbstractSuperhydrophobic poly(methylmethacrylate) (PMMA) surface with nanostructure was prepared effectively via phase separation and selective solvent method. It is proposed that the cooperation of the nanostructure of PMMA surface and the surface group reorientation leads to the superhydrophobicity of PMMA surface. The superhydrophobic PMMA surface with nanostructure was characterized by scanning electron microscope (SEM) and water contact angle (WCA) measurements. The blood compatibility of the superhydrophobic PMMA surface with nanostructure was evaluated by platelet-rich plasma (PRP) and fresh human whole blood contacting experiments using pure flat PMMA film as the control. These two experiments demonstrated that blood compatibility of the superhydrophobic PMMA surface with nanostructure is better than that of the pure flat PMMA film. The significance of this research lies in that it will greatly broaden the application range of materials that can be used as biomaterials by fabrication of superhydrophobic surfaces.

Microstructure and Electrical Conductivity of Ni-YSZ Cermets Prepared by Combustion Synthesis Method

2007 ◽  
Vol 336-338 ◽  
pp. 437-439
Author(s):  
Tie Song Lin ◽  
De Chang Jia ◽  
Ke Ning Sun
Keyword(s):  
Electrical Conductivity ◽  
Combustion Synthesis ◽  
Network Structure ◽  
Mixed Method ◽  
Hydrogen Reduction ◽  
Synthesis Method ◽  
Mixing Method ◽  
Better Than

Ni-YSZ cermets were prepared by combustion synthesis of Y(NO3)3, Zr(NO3)4, Ni(NO3)2 and urea followed by hydrogen reduction at 800°C. The microstructure and electrical conductivity of Ni-YSZ cermets were investigated as contrasted to those of the cermets with the same Ni contents prepared by mechanically mixing method. The cermets prepared by combustion synthesis method had better homogeneity of Ni distributed in YSZ than those prepared by mechanically mixed method; thus, both Ni and YSZ phases formed, to a certain extent, a continuous network structure. The electrical conductivity of the cermets prepared by combustion synthesis method was always better than that obtained with the samples prepared by mechanically mixed method.

scholarly journals A Comparative Study on Group-Based Learning Using STAD and SGD Toward Students’ Writing Achievement of Descriptive Text

2018 ◽  
Vol 7 (1) ◽  
pp. 56
Author(s):  
Sri Wahyuni
Keyword(s):  
Comparative Study ◽  
Mixed Method ◽  
Average Score ◽  
Writing Achievement ◽  
Significant Difference ◽  
Tenth Grade ◽  
Post Test ◽  
The Subject ◽  
Academic Year ◽  
Better Than

This study discusses a comparative study of group-based learning method between STAD and SGD toward students’ writing achievement of descriptive text on the tenth grade of SMK SalafiyahKajen in the academic year of 2017/2018. The purpose of the study was to differentiate those two methods, which were then found the appropriate method between STAD and SGD for learning writing skill. This study used a mixed method by using comparative design. The subject of this study were the students at the tenth grade of SMK SalafiyahKajen, students’ class RPL 2 and TB. The students from both of the class had different treatment which RPL 2 was treated using SGD and TB was treated using STAD. The technique of data collection was a test, observation, and documentation. The test consisted of two tests; they were pre-test and post-test. After collecting the data, it was found that the average score of pre-test of SGD group was 50.06 and for STAD group was 47.75; meanwhile, the average score of post-test of SGD group was 68.70 and for STAD group was 63.10. So, the computation of t count was 5.031, and the t table was 1.69. The t count was higher than t table, which stated that Ha was accepted. It meant that there was a significant difference between students' writing achievement which was taught by using STAD and SGD. The conclusion defined that SGD was better than STAD to be applied in learning writing.

Time and Latitude in South Africa

1972 ◽  
Vol 1 ◽  
pp. 27-38
Author(s):  
J. Hers
Keyword(s):  
South Africa ◽  
Cape Town ◽  
Astronomical Observations ◽  
Royal Observatory ◽  
The Republic ◽  
Astronomical Determination ◽  
Limited Accuracy ◽  
Better Than

In South Africa the modern outlook towards time may be said to have started in 1948. Both the two major observatories, The Royal Observatory in Cape Town and the Union Observatory (now known as the Republic Observatory) in Johannesburg had, of course, been involved in the astronomical determination of time almost from their inception, and the Johannesburg Observatory has been responsible for the official time of South Africa since 1908. However the pendulum clocks then in use could not be relied on to provide an accuracy better than about 1/10 second, which was of the same order as that of the astronomical observations. It is doubtful if much use was made of even this limited accuracy outside the two observatories, and although there may – occasionally have been a demand for more accurate time, it was certainly not voiced.

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