Evaluation of Effects of Pair Work on Quality of Designs

2005 ◽  
Author(s):  
H. Al-Kilidar ◽  
P. Parkin ◽  
A. Aurum ◽  
R. Jeffery
Keyword(s):  
Pair Work

scholarly journals The Application of Task-Based Learning to Improve the Quality of The Teaching and Learning Process of Reading in Indonesian Secondary Schools Context

2019 ◽  
Vol 2 (1) ◽  
pp. 43-53
Author(s):  
Maria Wulandari ◽  
Syafrianto Syafrianto
Keyword(s):  
Secondary Schools ◽  
Learning Process ◽  
Teaching And Learning ◽  
National Curriculum ◽  
Classroom Interaction ◽  
Field Notes ◽  
Scanning Strategies ◽  
Pair Work ◽  
Different Sources

This paper aims to discover the feasibility and the applicability of task-based learning in improving the quality of the teaching and learning process (TLP) of reading in Indonesian secondary schools in relation to the teaching of genre or text types as required by the national curriculum. This is an action research study which is qualitative in nature. The data were obtained through observations and interviews with the students and the collaborators. They were in the forms of field notes, interview transcripts, and photographs. In addition, this research applied the investigator triangulation, the theoretical triangulation and the time triangulation. The actions implemented in this research are discussing new vocabulary items and guessing meaning from context, applying skimming and scanning strategies, discussing grammar related to the text, conducting a question/answer game, providing various materials from different sources, and applying group/pair work. The results of the research show that the students’ motivation increased. They were more enthusiastic in learning reading. Moreover, the students were interested in various materials presented by the teacher. They could get involved actively in the reading learning process. In addition, the classroom interaction also increased. The students could interact very well with other students and the teacher. In conclusion, the use of task-based approach with its accompanying actions is effective to improve the teaching and learning process of reading.

Pair work in informatics lessons as one of the forms of organization of educational cooperation of students

2021 ◽  
pp. 40-47
Author(s):  
S. G. Puzinouskaya ◽  
О. A. Schasnovich
Keyword(s):  
Educational Material ◽  
Interactive Methods ◽  
Stepping Stone ◽  
Methods And Techniques ◽  
Pair Work

The article discusses the types of work in pairs that can be used in informatics lessons, provides methods and techniques that can be applied to implement this type of activity. The emphasis is placed on the fact that pair work allows you to improve the quality of assimilation of educational material, is a kind of stepping stone for preparing students for work in a group, makes it possible to acquire the most important skill — the ability to study independently. The material of the article contains specific examples of interactive methods and tasks that can be used to organize paired work at different stages of an informatics lesson. Their use in the classroom will help teachers to efficiently organize pair work and educational cooperation of students, will contribute to the formation of their communicative competency.

scholarly journals Upaya peningkatan kualitas pembelajaran membubut mata pelajaran kerja mesin lanjut menggunakan model praktik berpasangan

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Roni Suhartono ◽  
Soeharto Soeharto
Keyword(s):  
Learning Outcomes ◽  
Average Score ◽  
Quality Of Teaching ◽  
Field Notes ◽  
Average Activity ◽  
Work Model ◽  
Class Room ◽  
Improved Learning ◽  
Pair Work

Penelitian ini bertujuan untuk: meningkatkan kualitas pembelajaran pada mata pelajaran kerja mesin lanjut menggunakan Model Praktik Berpasangan dan mendapatkan bukti peningkatan hasil belajar kerja mesin lanjut setelah diterapkan Model Praktik Berpasangan. Penelitian ini merupakan Penelitian Tindakan Kelas (PTK), menggunakan desain Kemmis & Taggart. Pengumpulan data menggunakan teknik observasi, catatan lapangan, wawancara dan studi dokumen. Analisa dilakukan dengan analisa kualitatif untuk menggambarkan suasana pembelajaran yang berlangsung dalam kelas dan analisa kuantitatif untuk melihat perkembangan hasil belajar siswa dan kualitas pembelajaran. Hasil penelitan menyimpulkan bahwa: (1) penerapan pembelajaran menggunakan model praktik berpasangan dapat meningkatkan kualitas pembelajaran ditinjau dari aktivitas guru, aktivitas siswa, dan hasil pembelajaran yang meliputi persiapan kerja, proses kerja, hasil kerja, sikap kerja, dan waktu; dan (2) nilai rata-rata aktivitas guru mengalami peningkatan (dalam siklus I= 77.6, siklus II= 87.9, dan siklus III= 96.4). Nilai rata-rata aktivitas siswa mengalami peningkatan (dalam siklus I=70, siklus II= 86, dan siklus III= 96). Nilai rata-rata hasil belajar siswa mengalami peningkatan (dalam siklus I=70, siklus II 72.9, dan siklus III 78. Kata Kunci: Model Praktik Berpasangan, Kualitas Pembelajaran, Praktik Membubut THE EFFORT TO IMPROVE OF THE QUALITY OF TEACHING LATHE OF ADVANCED MACHINERY WORK USING THE PAIR WORK MODELAbstractThis study aims to improve the quality of teaching lathe practice of advanced machinery work using the pair work model and obtain evidence of improved learning outcomes in the subject after the implementation of the model. This research is class room action research, used the design by Kemmis & Taggart. The data were collected through observation, field notes, interviews and document. The data analysis used the qualitative analysis to describe the atmosphere of learning that took place in the classroom and the quantative analysis to see the development of the students’ learning outcomes and the quality of learning. The results of the research conclude that: 1) the application of the teaching using the pair work model can improve the quality of teaching in terms of the teachers’ activity, and students’ activity; and 2) the average activity score of teachers’ activity has increased (in Cycle I= 77.6, in Cycle II= 87.9, and in Cycle III= 96.4). The average score of students’ activity increases (in Cycle I= 70, in Cycle II= 86, and Cycle III= 96). The average score of students’ learning outcomes has increased (in Cycle I= 70, in Cycle II= 72.9, and in Cycle III= 78).

Immunoferritin localization of intracellular antigens in positively stained frozen sections

1978 ◽  
Vol 36 (2) ◽  
pp. 168-169
Author(s):  
K. T. Tokuyasu
Keyword(s):  
Surface Tension ◽  
Water Surface ◽  
Thin Layers ◽  
The Other ◽  
Positive Staining ◽  
Frozen Sections ◽  
The Past ◽  
Ultrathin Frozen Sections ◽  
Definition Of

During the past investigations of immunoferritin localization of intracellular antigens in ultrathin frozen sections, we found that the degree of negative staining required to delineate u1trastructural details was often too dense for the recognition of ferritin particles. The quality of positive staining of ultrathin frozen sections, on the other hand, has generally been far inferior to that attainable in conventional plastic embedded sections, particularly in the definition of membranes. As we discussed before, a main cause of this difficulty seemed to be the vulnerability of frozen sections to the damaging effects of air-water surface tension at the time of drying of the sections.Indeed, we found that the quality of positive staining is greatly improved when positively stained frozen sections are protected against the effects of surface tension by embedding them in thin layers of mechanically stable materials at the time of drying (unpublished).

Lithography below 100 nm

1983 ◽  
Vol 41 ◽  
pp. 96-99
Author(s):  
L. D. Jackel
Keyword(s):  
Spatial Distribution ◽  
Electron Beam ◽  
Electron Scattering ◽  
Electron Beam Lithography ◽  
Substrate Material ◽  
Local Electron ◽  
Electron Dose ◽  
Positive Resist ◽  
Exposure Process

Most production electron beam lithography systems can pattern minimum features a few tenths of a micron across. Linewidth in these systems is usually limited by the quality of the exposing beam and by electron scattering in the resist and substrate. By using a smaller spot along with exposure techniques that minimize scattering and its effects, laboratory e-beam lithography systems can now make features hundredths of a micron wide on standard substrate material. This talk will outline sane of these high- resolution e-beam lithography techniques.We first consider parameters of the exposure process that limit resolution in organic resists. For concreteness suppose that we have a “positive” resist in which exposing electrons break bonds in the resist molecules thus increasing the exposed resist's solubility in a developer. Ihe attainable resolution is obviously limited by the overall width of the exposing beam, but the spatial distribution of the beam intensity, the beam “profile” , also contributes to the resolution. Depending on the local electron dose, more or less resist bonds are broken resulting in slower or faster dissolution in the developer.

Convergent Beam Electron Diffraction

1978 ◽  
Vol 36 (3) ◽  
pp. 304-315
Author(s):  
G. Lehmpfuhl
Keyword(s):  
Electron Diffraction ◽  
Diffraction Pattern ◽  
Crystal Surface ◽  
Diffraction Spot ◽  
Crystal Thickness ◽  
Large Area ◽  
Electron Microscopic ◽  
Additional Information ◽  
Microscopic Investigations

Introduction In electron microscopic investigations of crystalline specimens the direct observation of the electron diffraction pattern gives additional information about the specimen. The quality of this information depends on the quality of the crystals or the crystal area contributing to the diffraction pattern. By selected area diffraction in a conventional electron microscope, specimen areas as small as 1 µ in diameter can be investigated. It is well known that crystal areas of that size which must be thin enough (in the order of 1000 Å) for electron microscopic investigations are normally somewhat distorted by bending, or they are not homogeneous. Furthermore, the crystal surface is not well defined over such a large area. These are facts which cause reduction of information in the diffraction pattern. The intensity of a diffraction spot, for example, depends on the crystal thickness. If the thickness is not uniform over the investigated area, one observes an averaged intensity, so that the intensity distribution in the diffraction pattern cannot be used for an analysis unless additional information is available.

Observability of Very Thick Specimen by Using Transmission Scanning Electron Microscope

1971 ◽  
Vol 29 ◽  
pp. 26-27
Author(s):  
K. Shibatomi ◽  
T. Yamanoto ◽  
H. Koike
Keyword(s):  
Electron Microscope ◽  
Image Quality ◽  
Scanning Electron Microscope ◽  
Chromatic Aberration ◽  
Image Contrast ◽  
Objective Lens ◽  
Thick Specimen ◽  
Transmission Electron ◽  
Scanning Electron

In the observation of a thick specimen by means of a transmission electron microscope, the intensity of electrons passing through the objective lens aperture is greatly reduced. So that the image is almost invisible. In addition to this fact, it have been reported that a chromatic aberration causes the deterioration of the image contrast rather than that of the resolution. The scanning electron microscope is, however, capable of electrically amplifying the signal of the decreasing intensity, and also free from a chromatic aberration so that the deterioration of the image contrast due to the aberration can be prevented. The electrical improvement of the image quality can be carried out by using the fascionating features of the SEM, that is, the amplification of a weak in-put signal forming the image and the descriminating action of the heigh level signal of the background. This paper reports some of the experimental results about the thickness dependence of the observability and quality of the image in the case of the transmission SEM.

The Current Situation in Chemical Stabilization of Biological Materials

1972 ◽  
Vol 30 ◽  
pp. 132-133
Author(s):  
John H. Luft
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Osmium Tetroxide ◽  
Molecular Level ◽  
Cross Linking ◽  
Chemical Stabilization ◽  
Specimen Preparation ◽  
Sufficient Condition ◽  
Radio Telescopes

With information processing devices such as radio telescopes, microscopes or hi-fi systems, the quality of the output often is limited by distortion or noise introduced at the input stage of the device. This analogy can be extended usefully to specimen preparation for the electron microscope; fixation, which initiates the processing sequence, is the single most important step and, unfortunately, is the least well understood. Although there is an abundance of fixation mixtures recommended in the light microscopy literature, osmium tetroxide and glutaraldehyde are favored for electron microscopy. These fixatives react vigorously with proteins at the molecular level. There is clear evidence for the cross-linking of proteins both by osmium tetroxide and glutaraldehyde and cross-linking may be a necessary if not sufficient condition to define fixatives as a class.

Resistance Monitor and Control for Vacuum Evaporation of Metals and Carbon

1976 ◽  
Vol 34 ◽  
pp. 572-573
Author(s):  
Russell L. Steere ◽  
Eric F. Erbe ◽  
J. Michael Moseley
Keyword(s):  
Electronic Device ◽  
Point Sources ◽  
High Contrast ◽  
Variable Resistor ◽  
Quality Of Results ◽  
Low Contrast ◽  
Evaporation Source ◽  
And Control ◽  
At Will

We have designed and built an electronic device which compares the resistance of a defined area of vacuum evaporated material with a variable resistor. When the two resistances are matched, the device automatically disconnects the primary side of the substrate transformer and stops further evaporation.This approach to controlled evaporation in conjunction with the modified guns and evaporation source permits reliably reproducible multiple Pt shadow films from a single Pt wrapped carbon point source. The reproducibility from consecutive C point sources is also reliable. Furthermore, the device we have developed permits us to select a predetermined resistance so that low contrast high-resolution shadows, heavy high contrast shadows, or any grade in between can be selected at will. The reproducibility and quality of results are demonstrated in Figures 1-4 which represent evaporations at various settings of the variable resistor.

Sign in / Sign up

Export Citation Format

Share Document