Reflecting Theories in Three Themes of Professional Development

There are three themes of professional development will be discussed in this paper; a commitment to professional development, a commitment to collaborative reflection on practice, recognizing context and culture in professional development. All Themes are elaborated respectively and relate the professional development theories to the Indonesian education system, and as a result, develop any potential understanding. All themes seem to support each other. the succeed effort of a teacher will contribute positively to their profession, in collaborative work or in the context and culture. The progress of the teacher professional development should come from the all parties' effort. As we all know that education does not only stand alone but it is strongly influenced by the present context of politics, social, culture, or religious. In, Indonesia the advancement of this sector would strongly rely on government action rather than grassroots or professional organization initiatives. Based on the reflection, the paper proposes narrowing gaps between the universities and the schools. Implementing this direction is believed to some extent would reach certain advancement in teacher professional development in Indonesia

Student Assessment And Misconceptions Of Photosynthesis: A Notion Of Shifting Perspective

Photosynthesis topic is as a compulsory topic ineducation typically in the second year of secondary high school. There is perception of some students that the photosynthesis topic is difficult to learn by student. This paper will clarify questions such as what assessment does mean, what student misconceptions in photosynthesis are, how teachers deal with student misconceptions, and last, why do teachers, school and curriculum need to change perspective in assessment. Based on the discussion, there are some parts that need to be reaffirmed. The teachers should not just recognize assessment as a formal paper, but in term of perspective and classroom instruction. It should be actualized in teaching-learning that there is no judgement of right and wrong for students in leaning.  Thus, dealing with student conception could be difficult for the teacher. The principal way is the teacher needs to be clear on the topic's planning and negotiate the meaning of all representations used in the classroom. Changing the type of assessments does not just simply mean changing teaching strategies or having appropriate types of assessment tool, but it could be a powerful source when it is integrated in the curriculum

Analisis Tren Dan Pola Hubungan Antara Index Integritas Ujian Nasional (Iiun) Dan Nilai Ujian Nasional (UN) Pada Siswa SMA IPA Di Provinsi Aceh

Penelitian ini bertujuan untuk menganalisis pola (pattern), tren, dan gambaran hubungan antara Nilai Ujian Nasional (UN) dan Index Integritas Ujian Nasioan (IIUN) pada Pra dan Pasca (2015-2017) Ujian Nasional Berbasis Komputer (UNBK) pada siswa SMA jurusan IPA di Provinsi Aceh. Data didapatkan dari hasil publikasi pada website kementerian pendidikan dan Kebudayaan berupa Hasil Ujian Nasional (UN) dan Index Integritas Ujian Nasional (IIUN) dari 103.273 orang siswa/i SMA/sederajat kelas IPA dari seluruh (23) Kabupaten/Kota di Provinsi Aceh. Untuk (1) melihat pola pola (pattern) dan tren dari Pra-Pasca UNBK (3 tahun) perjalanan Ujian nasional, digunakan analisis dengan statistik descriptiv dengan membandingkan rata-rata (mean) dari UN dan IIUN, standar deviasi (SD) UN. Analisis regresi Linear dengan SPPS digunakan untuk mendapatkan hubungan antara IIUN dan UN. Hasil analisis menunjukkan bahwa terjadi perbedaan yang mencolok, dan Perubahan yang bertahap antara Pra-dan Pasca pelaksanaan Ujian Nasional berbasis komputer (UNBK) pada siswa SMA/sederajat jurusan IPA di provinsi Aceh. Dalam rentang waktu tiga tahun (2015-2017) didapatkan trend penurunan nilai Ujian Nasional (UN) seiring dengan diiplementasikannya UNBK sehingga Index Integritas Ujian Nasional (IIUN) meningkat pada siswa SMA jurusan IPA di seluruh Kabupaten di Provinsi Aceh. Pada Pra-UNBK, Pola yang muncul adalah bahwa Integritas yang rendah memiliki hasil UN yang tinggi dan SD yang kecil. Pada Pasca-UNBK, tren dan pola semakin bergeser terbalik (arah negatif) dimana, nilai Ujian Nasional semakin mengecil, seiring dengan meningkatnya index integritas pelasanaan ujian Nasioanl (IIUN). Selain itu, Trend dan pola hubungan yang menjadi temuan Ujian Nasional dan Integritas penyelenggaraa UN adalah bahwa hubungan integritas dan nilai UN adalah nyata dan signifikan. hal ini bermakna bahwa selama ini salah satu faktor pada tinggi rendahnya nilai Ujian Nasional Siswa IPA di Provinsi Aceh adalah Integritas pelaksanaannya. Hal ini dapat dibuktikan melalui statistik deskriptif maupun analisis regresif

Advanced Electrodes for Solid Acid Fuel Cells by Platinum Deposition on CsH_(2)PO_4

We demonstrate cathodes for solid acid fuel cells fabricated by vapor deposition of platinum from the metalorganic precursor Pt(acac)_2 on the solid acid CsH_(2)PO_4 at 210 °C. A network of platinum nanoparticles with diameters of 2−4 nm serves as both the oxygen reduction catalyst and the electronic conductor in the electrode. Electrodes with a platinum content of 1.75 mg/cm^2 are more active for oxygen reduction than previously reported electrodes with a platinum content of 7.5 mg/cm^2. Electrodes containing <1.75 mg/cm^2 of platinum show significantly reduced catalytic activity and increased ohmic resistance indicative of a highly discontinuous catalytic-electronic platinum network

The Characteristic of Deep Sea Foraminiferal Community in Tomini Bay, Sulawesi

A total of 14 sediment samples from Tomini Bay, Sulawesi were used for this study as a component of sediment. The samples were carried out by using a gravity corer at water depth range between 600 and 1400 m. This study was a part of mapping activity on marine geology and geophysics during the first cruise of R/V Geomarin III in 2010. The purpose of this study was to examine the subsurface geology related to the potency of energy and mineral resources. Top core sediment samples were washed through 0.063mm opening sieve and then dried in an oven. About maximum 300 foraminiferal specimens were picked from every dried washed residue sample to separate them from other particles under a binocular microscope with brush and water. The result showed that most samples were dominated by planktonic foraminifera (&gt;90%), such as Globorotalia menardii, Orbulina universa, Globigerinoides ruber and others as typical of deep sea sediments. On the other hand, benthic foraminifera was found less than 10% that was represented by Cibicidoides wuellerstorfi, Ceratobulimina pacifica, Pyrgo sp., Bolivinita quadralatera, Uvigerina peregrina, etc. The characteristic of deep sea foraminiferal community of this area may be used for interpreting environmental deposition in the adjacent areas that is useful for petroleum exploration