bluuebunny/crossref_metadata_2025 huggingface dataset:
Karakteristik Tingkat Kreativitas Siswa yang Memiliki Disposisi Matematis Tinggi dalam Menyelesaikan Soal Matematika
Authors: Patmalasari Dewi , Nur Afifah Dian Septi , Resbiantoro Gaguk
Published: December 2017

Penelitian ini dilatarbelakangi oleh keberagaman ide siswa dalam menyelesaikan soal matematika. Penelitian ini bertujuan untuk mendeskripsikan tingkat kreativitas siswa yang memiliki disposisi matematis tinggi. Penelitian ini merupakan penelitian kualitatif, sehingga kehadiran peneliti sangat penting karena peneliti berperan sebagai instrumen utama. Dalam penelitian ini data dikumpulkan dengan metode angket, tes dan wawancara. Instrumen penunjang yang digunakan dalam penelitian ini adalah angket disposisi matematis, soal tes masalah matematika, dan pedoman wawancara. Analisis data yang digunakan mengacu terdiri dari tiga tahap yaitu mereduksi data, menyajikan data dan menarik kesimpulan. Dalam penelitian ini reduksi data dilakukan dengan mengelompokkan siswa kedalam tingkat disposisi matematis tinggi, sedang, dan rendah melalui angket disposisi matematis siswa. Selanjutnya data disajikan berupa deskripsi karakteristik tingkat kreativitas siswa yang memiliki disposisi matematis tinggi dalam menyelesaikan soal matematika. Selanjutnya dilakukan penarikan kesimpulan. Peneliti menggunakan triangulasi waktu untuk memeriksa keabsahan data. Hasil penelitian ini adalah siswa memiliki tingkat kreativitas 4 dan 3.

 

The research motivated by the student's idea of diversity in mathematic problems solving. This research aims to describe student’s level of creativity that has high mathematic disposition. This research is qualitative research, so the presence of researcher is very important because researcher acted as the main instrument. In this research, the techniques of data collection are questionnaire, test, and interview. While instruments that use in this study are student’s mathematic disposition questionnaire, the test of mathematic problems solving and guidelines for interviews. The analysis data used are data reduction, data displayed, and conclusions. In this research, data reduction was done by grouping students into mathematical disposition rate high, medium, and low using student’s mathematic disposition questionnaire. Then, data are presented in the form of a description of the characteristics of student’s level of creativity that have the high mathematic disposition in mathematic problems solving. Furthermore, it carried out the withdrawal of the conclusion. Researcher uses triangulation to check the validity of the data. The results of this research are the student has creativity level 4 and 3.
TES KOGNITIF DIAGNOSTIK UNTUK MENDETEKSI KESULITAN BELAJAR SISWA SEKOLAH DASAR
Authors: Budyartati Sri
Published: December 2017

Misconception refers to a concept which is neither in accordance with a scientific nor accepted by experts of a scientific body. Concepts are brought by students through observations or their first hand experiences of daily life. Students’ continuous misconceptions may hinder their building of scientific conceptions. Learning which does not take into account misconceptions leads learning difficulties and ends in students’ low achievement. In constructivistic learning, what does matter is that the learners themselves build their knowledge, rather than that the teacher transfers the knowledge. An implication of the constructivistic view for schools is that knowledge cannot be simply transformed from the teacher’s mind to the students’. It is actively constructed by the students themselves through first hand experiences. Teachers’ role, therefore, changes from the source and the giver of knowledge into the facilitator, and, by so doing, the essence of education lies on the learners rather than on the teacher. Cognitive Diagnostic Assessment (CDA) for education is designed specifically to assess the knowledge structure and the process of students’ ability to supply information with regard to their cognitive strength and weakness
PENERAPAN PEMBELAJARAN KOOPERATIF TIPE TSOS (THREE STAY ONE STRAY) UNTUK MENINGKATKAN KETERAMPILAN SOSIAL SISWA KELAS IV PADA MATA PELAJARAN IPA DI SDN KANIGORO 03 KOTA MADIUN
Authors: Suraya Selly Nurina
Published: December 2017

The objective of this research is to improve the fourth graders’ social skills in the subject of natural science through applying type of TSOS at the elementary school of SD Kanigooro 03 Madiun. The mothod adopted is qualitative while the design is classroom action research. The research took place at SD 03 Kanigoro 04 for 4 months, i.e. February through Mei 2011. As many as 31 students involved as the subject of this research. Data were collected through observation. It was applied to observe their social skills (affective domain) during the teaching-learning process which covered the skills to share, to participate, and to communicate. An observation sheet was the instrument to collect data during the observation which, then, descriptively analyzed. Results in the first cycle showed their average scores came out of a single social skill. The average of every aspect, respectively,: the skill to share 63.74; that to participate 64.58; and that on communication 59.77. Results in the second cycle indicated a significant increase. They could share, participate and communicate better than before. Their average scores were: 84.67 for the skill to share; 87.09 for that to participate; and 84.67 for that for communication. A conclusion drawn is that the cooperative learning type of TSOS can improve the fourth graders’ social skills of SD Kanigoro 03 Madiun. Their average skill to share improved from 63.74 in the first cycle to 84.67 in the second cycle. That on the participation was from 64.58 to 87.09. Last of all, that on communication was from 59.77 to 84.67.
PENGARUH PEMBELAJARAN COOPERATIF LEARNING TYPE MAKE A-MATCH TERHADAP HASIL BELAJAR IPA KELAS V SDN 01 MANISREJO KOTA MADIUN
Authors: Malawi Ibadullah , Juwarti Juwarti
Published: December 2017

The objectives of this research was to measure the influence of cooperative learnig type make a-match towards studets’ achievement in Natural Science. This research was conducted at SD Negeri 01 Manisrejo, Madiun Municipality, term 2011/2012. The analysis concluded that: (1) students’ achievement of the experiment class with cooperative learnig type make a-match  was better than that of the control class with conventional model; and (2) the learning activity showed that the students with make-a-match model were more greatly interested in the learning process being more couragious, where students not only studied but also playing games, which entailed the better students’ achievement than those with conventional model who have become very passive.
PENINGKATAN MINAT BACA KARYA SASTRA CERPEN MELALUI PENDEKATAN SINEKTIK PADA SISWA KELAS VI
Authors: Kartikasari Apri
Published: December 2017

At the elementary school level, teaching literature is still experiencing growth phase is quite difficult. Among difficulties faced by the teachers one of which is the lack of student interest in reading short stories to literature. Under these conditions, the purpose of this research is to increase interest in reading literary short story in the sixth grade students of SDN 02 Dawu District Paron, Ngawi. The subjects were 24 sixth grade students at SDN 02 Dawu studied using observation techniques. The results of the studies that have been done two cycles are known to increase in reading scores of students were assessed four aspects, namely the aspect of personal consciousness, volition, attention, and aspects of the feelings of pleasure. This study concludes that the approach sinektic the students' interest at the rate of two cycles of 62.45 while still using the conventional approach, the numbers increased to 83.49 when students have experienced learning approach to rate hikes sinektic reading the sixth grade students of SDN Dawu 02 at 21.04.

 

Keywords: Interest in reading, short stories, approaches sinektic
PENGEMBANGAN BUKU AJAR BERORIENTASI PENDIDIKAN KARAKTER PADA MATA KULIAH PEMBELAJARAN PKn SD DI PROGRAM STUDI S1 PGSD
Authors: Pangestu Widya Trio
Published: December 2017

Textbooks have become the main element of teaching and learning process. Studies have been conducted to develop instructional materials for the subject of PKn SD at Elementary School Teacher Training Study Program, but there is still limited textbooks with character content, when character have been debating recently. This research is attempetd to develop textbook of PKn SD with character content, by measuring students’ activity, achievement and response. This research is cunducted by class evaluation research method by applying 4-D model. The subjects of the research are 20 students of 5D and 20 of 5I, PGSD-IKIP PGRI Madiun. The results of the research shows that: the learning activity is good by 77.6% of sctive students; 95% of students achieve threshold level by 80.75; textbook is suitable used in average 83.2% and have positive response against the textbook.

 

Keywords: Textbook, character education, PKn SD.
Strategi Implementasi Model Pembelajaran Kooperatif Tipe Jigsaw Di Kelas IV Sekolah Dasar
Authors: Trisdiono Harli , Zuwanti Istutik
Published: December 2017

Penelitian ini bertujuan untuk mengetahui strategi implementasi model pembelajaran kooperatif tipe jigsaw di sekolah dasar, peningkatan aktivitas, dan hasil belajar siswa. Penelitian menggunakan jenis penelitian tindakan kelas dua siklus. Masing-masing siklus dilakukan dalam dua pertemuan. Subjek penelitian adalah siswa kelas IVA SD Negeri Godean I, Kecamatan Godean, Kabupaten Sleman. Subjek siswa sebanyak 34, terdiri dari 17 siswa laki-laki dan 17 siswa perempuan. Objek penelitian adalah mata pelajaran Ilmu Pengetahuan Alam (IPA). Hasil penelitian menunjukkan bahwa implementasi pembelajaran kooperatif tipe jigsaw di sekolah dasar memerlukan persiapan yang matang. Persiapan yang dilakukan antara lain pemilihan materi yang cocok, pemahaman karakteristik siswa, pembentukan kelompok ahli yang heterogen, pengamatan dan pendampingan selama diskusi di kelompok ahli dan kelompok asal yang langsung ditindaklanjuti, dan sumber belajar tambahan. Penerapan strategi implementasi pembelajaran kooperatif tipe jigsaw yang tepat dapat meningkatkan aktivitas dan hasil belajar siswa.

 
Enhanced-Fluorescence of a Dye on DNA- assembled Gold Nano-Dimers Discriminated by Lifetime Correlation Spectroscopy
Authors: M. R. Paulo Pedro , Botequim David , Jóskowiak Agnieszka , Martins Sofia , Prazeres Duarte M. F. , Zijlstra Peter , M. B. Costa Sílvia
Published: December 2017

We have employed DNA-directed assembly to prepare dimers of gold nanoparticles and used their longitudinally coupled plasmon mode to enhance the fluorescence emission of an organic red-emitting dye, Atto-655. The plasmon- enhanced fluorescence of this dye using dimers of 80 nm particles was measured at single molecule detection level. The top enhancement factors were above 1000-fold in 71% of the dimers within a total of 32 dimers measured, and, in some cases, they reached almost 4000-fold, in good agreement with model simulations. Additionally, fluorescence lifetime correlation analysis enabled the separation of enhanced from non-enhanced emission simultaneously collected in our confocal detection volume. This approach allowed us to recover a short relaxation component exclusive to enhanced emission that is attributed to the interaction of the dye with DNA in the interparticle gaps.
Surfactant Impurities Can Explain the Jones-Ray Effect
Authors: Duignan Timothy , Baer Marcel , Mundy Christopher
Published: December 2017

The surface tension of dilute salt water is a fundamental property that is crucial to understanding the complexity of many aqueous phase processes. Small ions are known to be repelled from the air-water surface leading to an increase in the surface tension in accordance with the Gibbs adsorption isotherm. The Jones-Ray effect refers to the observation that at extremely low salt concentration the surface tension decreases in apparent contradiction with thermodynamics. Determining the mechanism that is responsible for this Jones-Ray effect is an important for theoretically predicting the distribution of ions near surfaces. Here we show that this surface tension decrease can be explained by surfactant impurities in water that create a substantial negative electrostatic potential at the air-water interface. This potential strongly attracts positive cations in water to the interface lowering the surface tension and thus explaining the signature of the Jones-Ray effect. At higher salt concentrations, this electrostatic potential is screened by the added salt reducing the magnitude of this effect. This work suggests that the purity standards for water may be inadequate and that the interactions between ions with background impurities are important to incorporate into our understanding of the driving forces that give rise to the speciation of ions at interfaces.
Behavioral Finance: Household Investment and Borrowing Decisions
Authors: Illiashenko Pavlo
Published: December 2017

Behavioral finance is still mostly perceived as a field solely devoted to the study of asset pricing and behavior of individual investors. This interpretation to a large extent is misleading as it overlooks a growing body of empirical work in household finance, a subfield of behavioral finance concerned with household investment and borrowing decisions. By focusing on household under-saving, non-participation, and under-diversification, as well as mistakes in choosing debt contracts and managing debt obligations, this paper aims at presenting recent findings in household finance to a wide audience. This review differs from the existent ones as it focuses on the plurality of non-mutually exclusive explanations of the observed phenomena, including those that come from the competing research traditions. The special emphasis is made on the choice between fixed rate and adjustable rate mortgages, given its significance for macrofinancial stability. The review also discusses the evidence indicating that firms are aware of households’ behavioral weaknesses and readily exploit them.
Evolution of Deposit Guarantee System in Ukraine Towards Global Standards: Macroprudential Aspect
Authors: Danylenko Andryi
Published: December 2017

The article proposes some changes to deposit guarantee system in Ukraine, which can boost its contribution to national financial stability. The proposals are underpinned by analysis of evolution of international research and practice on building efficient deposit guarantee schemes in Europe and globally. They also take into account the current post-crisis situation and challenges for the deposit guarantee system in Ukraine.
PENGARUH PENGETAHUAN MANAJEMEN BARBASIS SEKOLAH DAN KECERDASAN EMOSIONAL TERHADAP KEPEMIMPINAN KEPALA MADRASAH TSANAWIYAH KABUPATEN PATI
Authors: Su'udi Ali , Nurkolis Nurkolis , Akmal Akmal
Published: December 2017

The purposes of this research are: (1) to determine the influence of school-based management knowledge to the school leadership; (2) to determine the influence of emotional intelligence on school leadership; (3) to determine the influence of school-based knowledge management and emotional intelligence on school leadership. The populations in this research are all heads of private Religion Junior High School (MTs)  in KKMTs Margoyoso and Gembong Pati totaling 90 people, with a sample of 47 people by using simple random sampling technique. The data collection method used is a questionnaire. Analysis of the data uses descriptive analysis, test requirements and hypotheses test include simple linear regression analysis to determine the influence of knowledge-based management school to school leadership, and multiple regression analysis to determine the influence of knowledge of school-based management and emotional intelligence together against school leadership. Analyzing data used SPSS for Window Release 16.From the results of this research are that the average acquisition of school-based management knowledge score 113.61 including high category, the average acquisition emotional intelligence score was 106.31 including enough categories, and the average acquisition score 103,17 including school leadership category quite well. The test results of the research data obtained prerequisite normal distribution of data, homogeneous, linear, and not multicolinier. Hypothesis tests found: (1) There is a positive influence on the school-based management knowledge of school leadership that is expressed by the equation Ŷ=30,003+ 0,644X1; the strength of correlation of 0,780 with a contribution of 0,608 or 60,8%. (2) There is a positive influence of emotional intelligence on school leadership expressed by the equation Ŷ = 34.276+0,648X2; the strength of correlation of 0.957 with a contribution of 0.916 or 91.6%. (3) There is a positive influence of school-based knowledge management and emotional intelligence together against the leadership of the principal expressed by the equation Ŷ = 22.067+ 0, 310X1 + 0, 432X2; the strength of correlation of  0,864 with a contribution of 0,747 or 74,7%.
MINAT GURU MENJADI KEPALA SEKOLAH DI KABUPATEN KUDUS
Authors: Hidayat Fatah , Nurkolis Nurkolis , Rasiman Rasiman
Published: December 2017

The purpose of this study is to describe and explain: (1) the teacher’s interest become principals in  Kudus, (2 recruitment system of principals in Kudus; (3) the factors that cause interest and disinterest of teachers to become principals in Kudus; (4) the problems in the recruitment of principal at Kudus, and (5) the best solution in order to have an interest in becoming the principal at Kudus. This research was conducted in the UPT Pendidikan Kaliwungu Kudus with the  respondent principals, teachers, and Kasie PTK Dikpora Kudus. The type and the approach that is used in this study is a qualitative descriptive approach. Data collection methods which is used is interviews and documentation. The analysis of the data used is descriptive analysis.The results of this study indicate that: (1) the majority of primary school teachers in the Kaliwungu Kudus don’t have interest in becoming principals because teachers feel comfortable and satisfied with his position as a teacher. Next, it is because of the burden and the task of the school head is heavier. Salaries and benefits received by teachers is more than enough also be because teachers do not intend to participate in the selection of the school head; (2) principal recruitment system in Kaliwungu Kudus covers the administration and academic selection. The recruitment model that is used is external recruitment. The recruitment procedures begin with data collection and mapping the number of principal empty formations. Then the official quotas applicants and make a selection announcement through a circular letter to all educational units. Applicants are asked to collect file administrative requirements. For those who pass the selection and administration will follow an academic test followed by interview and presentation.; (3) there are no factors that cause the interest of teachers to become principals. While the factors that cause the teachers are not interested in being the principal is the workload is too high when compared with teachers, compensation that is not balanced with the workload and physical readiness, mental and financial; (4) the obstacles in the recruitment principal at Kaliwungu Kudus covers compensation benefits to the principal are not balanced and the requirements of physical readiness, mental and materail; and (5) the best solution so that teachers have an interest in becoming the head of the school is to implement personnel management, especially in the provision of compensation should be reviewed and adjusted to the principal heavy duties. The amount of compensation should be added.
PENGARUH KEPEMIMPINAN KEPALA SEKOLAH DAN MOTIVASI KERJA TERHADAP MUTU SEKOLAH DASAR DI KABUPATEN JEPARA
Authors: Sulastri Sulastri , Nurkolis Nurkolis , Rasiman Rasiman
Published: December 2017

Tujuan dari penelitian ini adalah (1) untuk mengetahui seberapa besar pengaruh kepemimpinan kepala sekolah terhadap mutu sekolah dasar (2)  untuk mengetahui seberapa besar pengaruh motivasi kerja guru terhadap mutu sekolah dasar (3) untuk mengetahui seberapa besar pengaruh secara bersama-sama kepemimpinan kepala sekolah dan motivasi kerja guru terhadap mutu sekolah dasar di Kecamatan Tahunan Kabupaten Jepara.Populasi penelitian ini guru SD Negeri di Kecamatan Tahunan Kabupaten Jepara yang berjumlah 301 orang. Sampel sebanyak 75 orang dengan menggunakan teknik proportional random sampling. Metode pengumpulan data yang digunakan adalah metode kuesioner. Analisis data deskriptif, uji prasyarat dan uji hipotesis yang meliputi analisis regresi linier sederhana dan regresi ganda menggunakan program SPSS for Window Release 16.Hasil penelitian untuk variabel kepemimpinan kepala sekolah diperoleh: rata-rata = 109,93, untuk  variabel motivasi kerja guru diperoleh: rata-rata = 113,83, sedangkan untuk variabel mutu sekolah diperoleh: rata-rata = 116,75. Untuk uji hipotesis diperoleh: (1) terdapat pengaruh positif dan signifikan kepemimpinan kepala sekolah terhadap mutu sekolah yang dinyatakan dengan persamaanY = 40,406 + 0,694 X1, kekuatan korelasi sebesar 0,872 dengan kontribusi sebesar 0,761 atau 76,1%, (2) terdapat pengaruh  positif dan signifikan motivasi kerja guru terhadap mutu sekolah yang dinyatakan dengan persamaan Y = 52,072+ 0,568 X2 kekuatan korelasi sebesar 0,723 dengan kontribusi sebesar 0,523 atau 52,3%, dan (3) terdapat pengaruh positif dan signifikan kepemimpinan kepala sekolah dan motivasi kerja guru secara bersama-sama terhadap mutu sekolah yang dinyatakan dengan persamaan Y= 27,777 + 0,544 X1 + 0,257 X2, kekuatan korelasi sebesar 0,912 dengan kontribusi sebesar 0,832 atau 83,2%.
PENGARUH GAYA KEPEMIMPINAN PARTISIPATIF KEPALA SEKOLAH DAN IKLIM SEKOLAH TERHADAP ETOS KERJA GURU SMP NEGERI DI SUB RAYON 02 KOTA SEMARANG
Authors: Hastuti Puji , Soegito Soegito , Roshayanti Fenny
Published: December 2017

Penelitian ini bertujuan: (1)  menganalisis besarnya pengaruh gaya kepemimpinan partisipatif kepala sekolah terhadap etos kerja guru SMP Negeri di sub Rayon 02 Kota Semarang, (2) menganalisis besarnya pengaruh iklim sekolah terhadap etos kerja guru SMP Negeri di sub Rayon 02 Kota Semarang,(3) menganalisis besarnya pengaruh gaya kepemimpinan partisipatif kepala sekolah dan iklim sekolah secara simultan terhadap etos kerja guru SMP Negeri di sub Rayon 02 Kota Semarang.Populasi dalam penelitian ini adalah semua guru SMP Negeri di sub Rayon 02 Kota Semarang sebanyak 265 orang. Setelah dihitung diperoleh sampel sebanyak 73 orang dengan menggunakan teknik proporsional random sampling. Metode pengumpulan data yang digunakan adalah kuesionair. Analisis data yang digunakan adalah analisis deskriptif, uji persyaratan dan uji hipotesis yang meliputi analisis regresi linier sederhana, analisis regresi ganda, analisis korelasi. Teknik analisis data menggunakan program SPSS Statistics 19.Hasil penelitian menunjukkan bahwa hasil uji prasyarat dari data penelitian diperoleh data berdistribusi normal, linier, tidak multikolinier dan tidak terjadi heteroskedastisitas. Dari hasil uji hipotesis ditemukan: 1) terdapat pengaruh yang positif dan signifikan gaya kepemimpinan partisipatif kepala sekolah (X1) terhadap etos kerja guru (Y) SMP Negeri di sub Rayon 02 Kota Semarang yang dinyatakan dengan persamaan Y = 91,454+0,292 X1; kekuatan korelasi sebesar 0,276 dengan kontribusi  sebesar   0,076  atau  7,6%. 2) terdapat pengaruh positif  iklim sekolah (X2) terhadap etos kerja guru SMP Negeri di sub Rayon 02 Kota Semarang  yang dinyatakan   dengan   persamaan Y = 79,767 + 0,461X2; kekuatan   korelasi sebesar 0,318 dengan kontribusi sebesar 0,101 atau 10,1%. Terdapat pengaruh positif gaya kepemimpinan partisipatif kepala sekolah dan iklim sekolah secara simultan terhadap etos kerja guru SMP Negeri di sub Rayon 02 Kota Semarang yang dinyatakan  dengan persamaan Y = 82, 415 + 0,202 X2 + 0,192 X2;  kekuatan korelasi sebesar 0,293  dengan kontribusi sebesar 0,086 atau 8,6%.
MANAJEMEN KURIKULUM SEKOLAH DASAR ISLAM TERPADU INSAN MULIA KAJEN KABUPATEN PEKALONGAN
Authors: Haryaningrum Rita , Muhdi Muhdi , Retnaningdyastuti Retnaningdyastuti
Published: December 2017

Penelitian ini bertujuan untuk mendeskripsikan manajemen kurikulum SDIT Insan Mulia Kajen yang terdiri dari kegiatan perencanaan, pelaksanaan, dan evaluasi kurikulum.Penelitian ini menggunakan pendekatan penelitian kualitatif, jenisnya studi kasus. Pengumpulan data dilakukan dengan teknik wawancara, observasi, dokumentasi, dan triangulasi ketiga teknik, serta triangulasi sumber data. Analisis data menggunakan model Miles dan Huberman, kegiatan analisis data meliputi reduksi data, penyajian data, verifikasi dan menarik kesimpulan.Hasil penelitian dan pembahasan dapat disimpulkan: (1) SDIT Insan Mulia Kajen melakukan perencanaan kurikulum secara intensif dan mendalam oleh yayasan, Kepala Sekolah, tenaga pendidik, tenaga kependidikan, dan masukan dari orang tua murid, yang dijiwai oleh visi, misi sekolah sehingga menjadi kurikulum plus, yaitu kurikulum nasional ditambah kurikulum Sekolah Islam Terpadu. Kurikulum disusun dalam kegiatan pembelajaran, pengembangan diri, dan pembiasaan serta program unggulan sekolah yang dilaksanakan dengan sistem fullday school. (2) Pelaksanaan kurikulum berjalan efektif sesuai dengan perencanaan dilakukan oleh Kepala Sekolah, guru kelas dan wali kelas sebagai ujung tombak pelaksana bekerja sama dengan orang tua dan masyarakat untuk memperluas sumber belajar, melalui pengorganisasian, kepemimpinan, budaya sekolah, dan penghargaan sebagai imbalan. (3) Evaluasi kurikulum dilaksanakan dengan baik oleh Yayasan, Kepala Sekolah, tenaga pendidik dan tenaga kependidikan, berdasarkan monitoring dan supervisi kinerja. Evaluasi dilakukan terhadap hasil dan proses untuk mengetahui keefektifan program dan pencapaian tujuan sebagai upaya tindak lanjut untuk perbaikan dan pengembangan.
PENGARUH MOTIVASI KERJA DAN IKLIM SEKOLAH TERHADAP KOMITMEN KERJA GURU SEKOLAH DASAR NEGERI SE- KECAMATAN SEMARANG TIMUR
Authors: Choiriyah Siti , Soegito Soegito , Roshayanti Fenny
Published: December 2017

Permasalahan pada peneltian ini adalah motivasikerja,  iklim sekolah dan komitmen kerja guru Sekolah Dasar Negeri di Semarang Timur. Tujuan penelitian ini untuk : (1)  mengetahui  pengaruh  motivasi kerja terhadap komitmen kerja guru (2) mengetahui  pengaruh  iklim sekolah terhadap komitmen kerja guru (3) mengetahui  pengaruh  motivasi kerja dan iklim sekolah secara bersama-sama terhadap komitmen kerja guru Sekolah Dasar Negeri se- Kecamatan Semarang Timur.Populasi penelitian ini adalah guru Sekolah Dasar Negeri se-Kecamatan Semarang timur yang berjumlah 162 guru dengan jumlah sampel sebanyak 110 orang yang diperoleh secara acak dengan teknik dengan teknik proportional random sampling. Instrumen penelitian yang digunakan berupa angket. Analisis data yang digunakan adalah analisis deskriptif, uji persyaratan serta uji hipotesis yang meliputi analisis regresi linier sederhana dan analisis regresi berganda, dengan menggunakan program SPSS for Window Release 17.Hasil penelitian dapat diketahui bahwa rata-rata perolehan skor motivasi kerja sebesar 107,03 termasuk kategori sedang; rata-rata perolehan iklim sekolah sebesar sebesar 96,47 termasuk kategori sedang; rata-rata komitmen kerja sebesar sebesar 97,51 termasuk kategori sedang.  Hasil uji prasyarat dari data penelitian diperoleh data berdistribusi normal, linier dan tidak multikolinier. (1) Hasil uji hipotesis ditemukan terdapat pengaruh positif motivasi kerja terhadap komitmen kerja yang dinyatakan dengan persamaan Ŷ = 25,791 + 0,642 X1;  kekuatan korelasi sebesar 0,660 dengan kontribusi sebesar 43,6%. (2) Terdapat pengaruh positif iklim sekolah terhadap komitmen kerja yang dinyatakan dengan persamaan Ŷ = 27,747 + 0,689 X2; kekuatan korelasi sebesar 0,797 dengan kontribusi sebesar 63,6 %. (3) Terdapat pengaruh positif motivasi kerja dan iklim sekolah terhadap komitmen kerja yang dinyatakan dengan persamaan Ŷ = 9,035 + 0,312 X1 + 0,538 X2;  kekuatan korelasi sebesar 0,842 dengan kontribusi sebesar 70,8%.
PENGARUH KEPEMIMPINAN KEPALA SEKOLAH DAN KOMPETENSI PROFESIONAL GURU TERHADAP SEKOLAH EFEKTIF PADA SMP NEGERI RAYON PATEBON KABUPATEN KENDAL
Authors: Winardi Joko , Nurkolis Nurkolis , Yuliejantiningsih Yovitha
Published: December 2017

Permasalahan dalam penelitian ini adalah kompetensi profesional dalam mewujudakan sekolah yang efektif dan berluaitas pada SMP Negeri Rayon Patebon Kabupaten Kendal. Tujuan penelitian  untuk mengetahui: (1) besarnya pengaruh kepemimpinan kepala sekolah terhadap pewujudan sekolah efektif, (2) besarnya pengaruh kompetensi profesional guru terhadap sekolah efektif, (3) besarnya pengaruh  kepemimpinan kepala sekolah dan kompetensi guru secara bersama-sama terhadap  pewujudan sekolah efektif pada SMP Negeri Rayon Patebon Kabupaten Kendal.Populasi penelitian ini adalah guru SMP Negeri Rayon Patebon Kendal berjumlah 188 orang, sampel sebanyak 65 orang ditetapkan dengan teknik proportional random sampling. Metode pengumpulan data menggunakan kuesioner. Analisis deskriptif data, uji validitas dan reliabilitas, serta uji hipotesis yang meliputi regresi tunggal dan regresi ganda  menggunakan  SPSS for Window Release 16.Pelaksanaan kepemimpinan transformasional kepala sekolah masuk kategori kuat,  kompetensi profesional guru masuk kategori kompeten, dan pewujudan sekolah efektif masuk kategori efektif. Hasil penelitian adalah:  (1) ada pengaruh  terhadap pewujudan sekolah efektif dengan F hitung (41,201) > F tabel (3,36) dengan kontribusi 35,5%, (2) ada pengaruh  terhadap pewujudan sekolah efektif dengan F hitung (26,654) > F tabel (3,36) dengan kontribusi 26,2%, (3) ada pengaruh kepemimpinan transformasional kepala sekolah dan kompetensi profesional guru terhadap pewujudan sekolah efektif dengan  harga F hitung (29,632) > F tabel (3,44) dengan kontribusi sebesar 44,5%.
Timing Synchronization for Mc-Cdma Systems Using a Time-Multiplexed Synchronization Channel
Authors: Ky Pham Hong , Long Nguyen Duc
Published: December 2017

In this paper, we present a synchronization algorithm for Multi-Carrier CDMA (MC-CDMA) systems using a time-multiplexed synchronization channel. The simulations results show that a system using proposed algorithm has much higher timing detection probability than using other algorithms, especially in exponential decay multipath fading.
Influence of Nitrogen Gas Flow Rate on The Microstructural and Mechanical Properties of Tin Deposited Carbon Steel Synthesized by Cae
Authors: Mubarak A. , Hamzah E.
Published: December 2017

This paper reports on the preparation of titanium nitride (TiN) thin films on carbon steel plates, using cathodic arc evaporation CAE PVD technique. We studied and discussed the effect of various nitrogen gas flow rates on microstructural and mechanical properties of TiN-coated carbon steel plates. The coating properties investigated in this work included the surface morphology, thickness of deposited coating, adhesion between the coating and substrate, coating composition, coating crystallography, hardness and surface characterization using a field emission scanning electron microscope (FE-SEM) with energy dispersive X-ray (EDX), Xray diffraction (XRD) with glazing incidence angle (GIA) technique, scratch tester, hardness testing machine, surface roughness tester and atomic force microscope (AFM). SEM analyses showed that all the films had columnar and dense structures with clearly defined substrate-film interfacial layers. The hardness of TiN-coated carbon steel was noted six times more than the hardness of uncoated one. An increase in nitrogen gas flow rate showed; decrease in the formation of macro-droplets, average roughness (Ra) and root-mean-square (RMS) values in CAE PVD technique. During XRD-GIA studies, it was observed that by increasing the nitrogen gas flow rate, the main peak [1,1,1] shifted toward the lower angular position. Microhardness of TiN-coated carbon steel showed about six times increase in hardness than the uncoated one. Scratch tester results showed an average adhesion between the coating material and substrate. Thanks to the high resolution power could be observed that by increasing nitrogen gas flow rate there was percentage increase in the bearing ratio while percentage decrease in histogram.
Characteristics of Solid-State Calcium Ion Sensors Based on Photocurable and Selfplasticising Polyacrylate Matrices
Authors: Heng Lee Yook , Hall Elizabeth A.H.
Published: December 2017

New membrane materials based on cross-linked poly(n-butyl acrylate) (nBA), have been used successfully as calcium ion-selective membranes. These membrane materials possess selfplasticising property and hence do not require plasticisers. The photocurability and good adhesion characteristics of these polymer matrices enable workable solid-state calcium ion sensors to be fabricated by simple photocure procedures employing the calcium ionophore ETH5234 and a lipophilic additive as ion sensing components. The calcium ion-selectivity of the sensors can be controlled by varying the chemical composition of the photocured  membrane. An optimum amount of the cross-linker 2,2-hexanedioldiacrylate (HDDA) and the incorporation of n-heptyl acrylate (nHA) led to improvement in the calcium ion-selectivity. The best calcium ion-selectivity was obtained from a copolymer membrane with composition: nBA = 74 wt-%, nHA = 20 wt-% and HDDA = 0.1 wt-%. The selectivity coefficients of calcium over major cations were: LogKCaPot,Na= -4.4,  LogKCaPot,K = -3.6, LogKCa,PotLi = -5.9, LogKCaPot,Mg= -4.4 with a Nernstian slope (29.1 ± 0.8 mV/decade) under buffered conditions. This potentiometric performance is comparable to other solid-state calcium ion sensors with various plasticised polymer membranes.
Synthesis And Characterization Of Pure-Silica- Zeolite-Beta Membrane
Authors: Fong Yeong Yin , Bhatia Subhash
Published: December 2017

The semiconductor industry needs low dielectric constant (low k-value) materials to more advance microprocessor and chips by reducing the size of the device features. In fabricate this context, a new material with lower k value than conventional silica ( k = 3.9 - 4.2 ) is needed in order to improve the circuit performance. As per the recent International Semiconductor Technology plan, a low-k material with a k = 1.6 will be needed by 2010. The choice of the inorganic zeolite membrane is an attractive option for low k material and suitable for microprocess application. In the present study, a pure silica zeolite beta membrane coated on the non-porous stainless steel support was synthesized using in situ crystallization of a gel with the composition of  SiO2 : 0.6 TEAOH : 0.6 HF : 10.1 H2O. The crystallization was carried in the presence of tetraethylammonium hydroxide TEA(OH) as structure directing agent, fumed silica, HF and deionized water at pH value of 9. The crystallization under hydrothermal conditions at 130oC was carried out for the time period of 14 days. The membrane was characterized by X-Ray Diffraction ( XRD ),  Thermogravimetric Analysis ( TGA ), Nitrogen Adsorption and Scanning Electron Microscope ( SEM ) .  SEM micrographs show highly crystalline, truncated square bipyramidal morphology of pure silica zeolite beta was coated on the non-porous stainless steel support. The membrane dielectric constant, k-value was measured as 2.64 which makes it suitable for the microprocessor applications.
Source for Gloxinia (Sinningia Spp.) and Potato (Solanum Tuberosum) Micropropagation
Authors: Tan Nhut Duong , Ngoc Huong Mai Thi
Published: December 2017

An efficient lighting system (Compact 3U) was successfully applied to the micropropagation of gloxinia and potato plants. To compare the in vitro growth of plantlets under Neon and Compact 3U lighting systems, gloxinia and potato shoots were cultured on suitable media at different light intensities: (1) 45 µmol m-2s-1 (under Neon lighting system as a control); (2) 45 µmol m-2s-1, (3) 60µmol m-2s-1, and (4) 75 µmol m-2s-1 (under Compact 3U lighting systems). The results obtained after 3 weeks of in vitro culture and 6 weeks of acclimatization in a greenhouse showed that the growth of plantlets cultured under the Compact 3U system was better than that under Neon lighting system. The Compact 3U lighting source had a highly significant effect on the growth and development of gloxinia and potato plantlets. Besides, the data in our study also indicated that gloxinia and potato plantlets adapted differently to different lighting sources and light intensities.
Adaptive Finite Element Technique For Viscous Flow Analysis
Authors: Dechaumphai Pramote , Sikkhabandit Supatpong
Published: December 2017

Adaptive Finite Element Technique For Viscous Flow Analysis
ON THE DENSE FAMILIES IN THE RELATIONAL DATAMODEL
Authors: Duc Thy Vu , Son Nguyen Hoang
Published: December 2017

In this paper, dense families of relation schemes are introduced. We characterize minimal keys of relation schemes in terms of dense families. Note that, the dense families of database relations were introduced by Jarvinen [6]. We prove that the set of all minimal keys of a relation scheme s= (U, F) is the transversal hypergraphs of a hypergraph D– {∅}, where Dis any s-dense family. We give a necessary and sufficient condition for an abitrary family to be s-dense family. We also present some dense families of relation schemes. Furthermore, in this paper, we also study antikeys by means of dense families. We present connections between antikeys and a dense family of relation schemes. Finally, we study the time complexity of the problem finding antikeys.
SPOT WELDING COPPER - 1% Cr ELECTRODE TIPS PRODUCED VIA EQUAL CHAN NEL ANGULAR PRESSING
Authors: Hussain L.B. , Aljuboury Ali A. , Gebril M.A.M. , Sharif Nurulakmal Moh
Published: December 2017

A sharp 120o Equal channel angular pressing (ECAP) was applied at room temperature to refine the grains sizes of pure copper and copper - 1% Chromium alloy for spot welding electrode tips application. Initially deformation behavior was investigated with the position using colorful plasticine as work piece followed by copper alloy. It was found the deformation at the central part of the work piece is heavily sheared than the outer part. Optical and Scanning electron microscopy were used to study the progress of grain refining under the influence of rotation and number of passes during pressing. The influence of elongated fibrous nano graines on electrical conductivity and hardness were discussed. Shear test of spot welded 303 stainless steel indicated that nano structural Cu-1% Cr electrode tips used showed superior results compared to commercial electrodes.
DEVELOPMENT OF HOLE RECOGNITION SYSTEM FROM STEP FILE
Authors: Tan C. F. , Ismail N. , Wong S.V. , Sulaiman S. , Osman M.R.
Published: December 2017

This paper describes the development of Hole Recognition System (HRS) for Computer-Aided Process Planning (CAPP) using a neutral data format produced by CAD system. The geometrical data of holes is retrieved from STandard for the Exchange of Product model data (STEP). Rule-based algorithm is used during recognising process. Current implementation of feature recognition is limited to simple hole feat ures. Test results are presented to demonstrate the capabilities of the feature recognition algorithm.
MARINE NATURAL PRODUCTS AND THEIR POTENTIAL APPLICATION IN THE FUTURE
Authors: Van Minh Chau , Van Kiem Phan , Hai Dang Nguyen
Published: December 2017

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BLACK AND WHITE LAHAR AS INORGANIC SUPPORT FOR THE IMMOBILIZATION OF YEAST INVERTASE
Authors: C. Sabularse Veronica , T. Tud Mayrene , Lacsamana Marivic S. , Solivas Josefina L.
Published: December 2017

Volcanic ejecta or lahar can serve as an inorganic support for the immobilization of invertase. Pampanga and Bicol lahar samples were pretreated by ignition at 550oC for 5 hrs followed by concentrated hydrochloric acid treatment, activatedby reaction with aminopropyltriethoxysilane (APTS) and then covalently bound to invertase using glutaraldehyde as linker. Chemical tests confirmed the attachment of APTS to lahar and glutaraldehyde to silanized lahar. The quantity of immobilized invertase on Pampanga white, Pampanga black and Bicol black lahar were 98.73%, 96.73% and 84.27%,respectively. Conditions for maximum activity of invertase immobilized on Pampanga white lahar were pH 3.5, 45oC and 0.3 M sucrose concentration. The Kmand Vmaxfor free invertase and immobilized invertase on Pampanga white lahar were 2.37 M and 48.75 mmol/min, and 3.88 M and 38.87 mmol/min, respectively. Invertase bound to Pampanga white lahar was most stable towards repeated and continuous use and towards storage with intermittent use as indicated by its relatively greater activity.
STUDIES ON FUCOIDAN AND ITS PRODUCTION FROM VIETNAMESE BROWN SEAWEEDS
Authors: Minh Ly Bui , Quoc Buu Ngo , Duy Nhut Nguyen , Duc Thinh Pham , Thi Thanh Van Tran
Published: December 2017

Sulfated fucans are among the most widely studied of all the sulfated polysaccharides of plant origin that exhibit biological activities in mammalian systems. In this report fucoidans from some Vietnamese Sargassumspecies such as S.polycystum, S.oligocystum, S.mcclurei, S. Swartzii and denticaprum were extracted and fractionated on a DEAE-Sephadex A-25 column. On the basis of chemical and spectral analyses, the fucoidan fractions obtained were found to be the sulfated fucogalactans containing sulfate ester groups and uronic acid, and composed essentially of fucose and galactose, as well as a minor amount of other sugars. The polysaccharide fractions were tested for anticancer activity. The primarily obtained results showed that all fucoidan fractions isolated from S. swartziidemonstrate bioactivity effects against cancer cells, while fraction F5 with a highest sulfate content exhibits the strongest anti-invasion activity. This indicates that sulfate content plays an important role in the anticancer activity of the brown algal fucoidans. A laboratory scale pilot for fuco idan production from Vietnamese brown seaweeds has been set with a capacity of 500 g of crude fucoidan per day.
New Approach of Highly Efficient Fermentation Process for Bio ethanol using Xylose as Agricultur e Residues
Authors: Ahmed Abu Saleh , Watanabe Seiya , Hamdan Sinin , Kodaki Tsutomu , Makino Keisuke
Published: December 2017

Agricultural waste biomasshas already been transferred to bioethanol and used as energy related products, although many issues such as efficiency and productivity still exist to be overcome. In this study, the protein engineering was applied to generate enzymes with completely reversed coenzyme specificity and developed recombinant yeasts containing those engineered enzymes for construction of an efficient biomass-ethanol conversion system. Recombinant yeasts were constructed with the genes encoding a wild type xylose reductase (XR)and the protein engineered xylitol dehydrogenase (XDH)(with NADP) of Pichiastipitis. These recombinant yeasts were characterized based on the enzyme activity and fermentation ability of xylose to ethanol. The protein engineered enzymes were expressed significantly in Saccharomycescerevisiaeas judged by the enzyme activity in vitro. Ethanol fermentation was measured in batch culture under anaerobic conditions. The significant enhancement was found in Y-ARSstrain, in which NADP+-dependentXDH was expressed; 85% decrease of unfavorable xylitol excretion with 26% increased ethanol production, when compared with the reference strain expressing the wild–type XDH.
S tudies on the phase transitions and properties of tungsten (VI) oxide nanoparticles by X - Ray diffraction (XRD) and thermal analysis
Authors: Abdullah S.F. , Radiman S. , Abdul Hamid M.A. , Ibrahim N.B.
Published: December 2017

Tungsten (VI) oxide, WO3nanoparticles were synthesized by colloidal gas aphrons(CGAs) technique.The resultant WO3nanoparticleswere characterized by thermogravimetric-differential thermal analysis (TG-DTA) and X-Ray diffraction (XRD) measurements in order to determine the phase transitions, the crystallinity and the size of theWO3nanoparticles. As a comparison, transmission electron microscope (TEM) was used to investigate the size of the WO3nanoparticles. The result from XRD and DTA show that the formation of polymorphsWO3nanoparticles have the following sequence: orthorhombic (b-WO3)®monoclinic (g-WO3) ®triclinic (d-WO3) ®monoclinic (e-WO3) with respect to the calcination temperature of 400, 500, 600 and 700°C. No diffraction peaks were found in the X-Ray diffraction measurements for the sample heat treated at 300°C (as-prepared), suggesting that an amorphous structure was obtained at this temperature whereas the crystallinity had been obtained by the other samples of theWO3nanoparticles at the calcination temperatures of 400, 500, 600 and 700°C. It is also found that the X-Ray diffraction measurements produced an average diameter of (30 ±5), (50 ±5), (150 ±10) and (200 ±10) nm at calcination temperatures of 400, 500, 600 and 700°C respectively by using Debye-Scherrer formula. The TG curve revealed that the WO3nanoparticles is purely anhydrous since the weight loss is insignificant (0.3 –1.4) % from 30 until 600°C for the WO3nanoparticles calcined at 400°C. Finally, the composition and the purity of the WO3nanoparticleshave been examined by X-Ray photoelectron spectroscopy (XPS). Theresults indicate no significant changes to the composition and the purity of the WO3nanoparticle produced due to the temperature variations
Energy cost of seed drying
Authors: Jittanit Weerachet , Srzednick George , Driscoll Robert
Published: December 2017

In this work, the energy costs of drying corn, rice and wheat seeds between 3 drying options were compared. They consisted of 1) two-stage drying by using fluidised beddrye (FBD) in the 1ststage and in-store dryer (ISD) in the 2ndstage, 2) single-stage drying by fixed bed dryer (FXD) and 3) two-stage drying by using FXD in the 1ststage and ISD in the 2ndstage. The drying conditions selected for comparison were proved to be safe for seed viability by the previous studies. The results showed that the drying options 2 and 3 consumed less energy than option 1. However, the benefits from lower energy cost must be weighed against some advantages of using FBD. Furthermore,it appeared that running the burners of FXD and ISD for warming up the ambient air during humid weather condition could shorten drying time significantly with a little higher energy cost.
Adaptive Backstepping Control of Electrical Transmission Drives with Elastic, Unknown Backlash and Coulomb Friction Nonlinearity
Authors: Đông Huỳnh Văn , Kiên Trần Xuân , Định Nguyễn Công
Published: December 2017

In this paper, we present a new scheme to design an adaptive controller for uncertain nonlinear systems with unknown backlash, Coulomb friction nonlinearity. The control design is achieved by introducing a smooth approximate backlash model and certain well defined functions and by using backstepping technique. Itis shown that the proposed controller can guarantee that the system is global asymptotic stable.
D EFORMATION OF WOOD IN C OMPRESSION DURING MOISTURE M OVEMENT
Authors: Hamdan Sinin , Hasan Mahbub , Yew Chew Meng
Published: December 2017

This work presents the phenomenon of mechano-sorptive strain in the deformation of wood during moisture content(MC)changes. A series of experiments were designed to demonstrate the greatly enhanced deformation due to the mechano-sorptive effect. The purpose of this work is to show the magnitude of mechano-sorptive creep compared to the ordinary viscoelastic creep with applied compressive load. In order to do this, the moisture movement with MC change, moisture movement without MC change and conditions without moisture movement were induced. The unique patterns of strains of various conditions induced in the experiments were observed. The characteristics shown in results were evaluated logically and compared to existing theories to confirm their validity. With the presence of mechano-sorptive, the maximum strains of Jelutong (dyera costulata)wood specimens loaded at 200N is 0.433x10-3. The severest deformation is caused by the increasing MC in the wood specimen, attributed to the mechano-sorptive(MS) effect.