The Process of Thinking by Prospective Teachers of Mathematics in Making Arguments

This study aimed to describe the process of thinking by prospective teachers of mathematics in making arguments. It was a qualitative research involving the mathematics students of STKIP PGRI Jombang as the subject of the study. Test and task-based semi structural interview were conducted for data collection. The result showed that 163 of 260 mathematics students argued using inductive and deductive warrants. The process of thinking by the prospective teachers of mathematics in making arguments had begun since they constructed their very first idea by figuring out some objects to make a conclusion. However, they also found a rebuttal from that conclusion, though they did not further describe what such rebuttal was. Therefore, they decided to construct the second ideas in order to verify the first ones through some pieces of definition

The Impact of Postmodernism on 21st Century Higher Education

The American undergraduate higher educational institution was organized and developed well over 100 years ago, and for the most part, it was designed around Eurocentric ideals, experiences, and values—ones that hardly reflect the population and principles of a 21st century America. The higher education system is undoubtedly a product of modernism; however, as postmodernism has become more widespread through mainstream society, universities must reevaluate their means and their ends in order to meet transitioning standards and expectations especially if academe hopes to remain a pillar of our ever-progressing society. The three majorly impacted areas of higher education include enrollment trends, the desired outcomes and objectives of obtaining a degree, and classroom academics and pedagogy. These areas that are all equally vital in the success of the institution are needing to be contextualized in a wider socio-cultural frame that includes the viewpoints and charges of a postmodernist society. Postmodernism is marking the end of traditional structures and institutions, academe included. The one-size-fits-all approach that links together modern thought is no longer sufficient nor acceptable to the masses, especially those of the younger generations who compose most of the recruitment pool for universities

Serial Case: Colorectal Malignancy in Young Age

Colorectal cancer was the third most common cancer found worldwide. In 2002, colorectal cancer was the 2nd most common cancer in men, while it ranked third among women. Based on Indonesian Ministry of Health data, its prevalence was 1.8 per 100.000 population. We report four cases of colorectal cancer in this case series, and all cases was occured among person aged 28-32 years old. Age was the main relevant risk factors for colorectal cancer in most population. Only 3% of colorectal cancer found in individual aged less than 40 years old. This case series also aimed to show that risk factors was various and changing by the time, but its determinant factors could not be explained yet

Pengaruh Profitabilitas, Ukuran Perusahaan, dan Struktur Kepemilikan terhadap Keputusan Pendanaan pada Perusahaan Properti di Bei

Setiap Perusahaan dituntut untuk dapat melakukan pengelolaan fungsi-fungsi manajemennya dengan baik dan dapat mengambil keputusan yang tepat dalam pengelolaan manajemen keuangan Perusahaan. Tujuan penelitian ini adalah untuk mengetahui pengaruh profitabilitas, ukuran Perusahaan, dan struktur kepemilikan terhadap keputusan pendanaan. Penelitian ini dilakukan pada Perusahaan Properti di Bursa Efek Indonesia periode 2013-2016. Jumlah populasi yang diambil sebanyak 52 Perusahaan dengan metode purposive sampling. Pengumpulan data dilakukan melalui data sekunder. Teknik analisis yang dilakukan pada penelitian ini menggunakan metode regresi linier berganda dengan menggunakan variabel bebas profitabilitas yang diproksikan dengan Return On Asset (ROA), ukuran Perusahaan yang diproksikan dengan (Ln Size), dan kepemilikan manajerial. Berdasarkan hasil analisis ditemukan bahwa variabel profitabilitas, ukuran Perusahaan, dan kepemilikan manajerial secara simultan berpengaruh signifikan terhadap keputusan pendanaan. Profitabilitas secara parsial berpengaruh negative dan signifikan terhadap keputusan pendanaan. Ukuran Perusahaan secara parsial berpengaruh positif dan signifikan terhadap keputusan pendanaan. Kepemilikan manajerial secara parsial berpengaruh negatif signifikan terhadap keputusan pendanaa

TiO2-rGO Composite for Photocatalytic Decolorization of Methylene Blue Under the Visible Light Illumination

Titanium dioxide-reduced graphene oxide (TiO2-rGO) was synthesized by hydrothermal method using TiO2 powder and rGO precursor from graphite rod by modified Marcano Method. The obtained TiO2-rGO photocatalyst was characterized by X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), and Diffuse reflectance UV (DRUV). Based on XRD diffractogram, it is known that TiO2 has an anatase crystal phase. In the FTIR spectrum, it was observed that there was an absorption peak at the wavenumber of 1630 cm-1 from the vibration (C=C) as an indication that the C atom was incorporated into the TiO2 structure. The incorporation of C atoms into the TiO2 structure to form TiO2-rGO causes the bandgap energy to decrease from 3.29 eV to 3.20 eV. The photocatalytic activity was tested against decolorization of methylene blue solution for 180 minutes under visible light illumination from a 50 watt LED lamp. Every 10 minutes, absorbance was measured using a UV-Vis spectrophotometer at a wavelength of 664 nm. TiO2-rGO photocatalyst has better photocatalytic activity with %D of 96.39% under UV light and 84.32% under visible light illumination, while TiO2 is only able to degrade 93.87% and 36.55%, respectively

The Effect of Drinking Tea to the Anemia Among Elderly in Bandung

The objective of this study is to know the effect of tea to anemia iron deficiency among elderly people. The study population is the elderly people in Bandung City. The sampling was 132 elderly that were selected randomly in Sub District of Cicendo year 2005. Method of measuring hemoglobin is the sianmethemoglobin and the drinking tea was measured by 1 x 24 hours food record for seven days. The data was analysis using multiple logistic regression. The results of this study shows that rate of anemia among elderly people in Bandung is 47,7% (95%CI = 39%—56%) and  about half of the elderly (49%) drinking tea every day (95%CI = 40%—58%). The elderly who drink tea every day have risk for anemia 92 times higher compared than those who did not drink tea (ORadj = 91.8, 95% CI = 8—221) after controlled for protein intake.  If the drinking tea habit among elderly could be changed, the anemia could be reduced by 85% i.e. from 47.7% become 7.3%. In order to decrease anemia, it’s suggested to reduce their drinking tea habit or increase their protein intake. However, due to lack of their teeth’s functioning and low of their economic status, reducing their drinking tea habit is the best choice to decrease anemia among elderly.&nbsp

Membangun Industri Bunga Krisan yang Berdaya Saing melalui Pemuliaan Mutasi

Industri bunga krisan berkembang pesat sejak dua dekade terakhir yang ditandai dengan peningkatan luas area tanam, produksi, produktivitas, nilai ekspor, dan jumlah petani. Dalam rangka menghadapi persaingan global, khususnya memasuki era Masyarakat Ekonomi ASEAN, perlu upaya peningkatan daya saing agar industri krisan di dalam negeri tetap berkembang. Kegiatan pemuliaan merupakan langkah strategis untuk me-ningkatkan daya saing dengan menciptakan varietas unggul krisan yang adaptif terhadap Perubahan iklim, tahan terhadap hama/penyakit, dan sesuai dengan preferensi konsumen. Pemu-liaan mutasi yang dikombinasikan dengan teknologi kultur jaringan dapat diandalkan untuk menghasilkan varietas unggul krisan, mengingat teknik ini dapat memperbaiki satu atau lebih karakter tanpa mengubah karakter dasar varietas asal. Pera-kitan varietas melalui induksi mutasi terdiri atas dua kegiatan utama, yaitu induksi keragaman melalui aplikasi mutagen dan seleksi secara sistematis terhadap populasi hasil induksi mutasi untuk mendapatkan individu dengan karakter yang diinginkan. Pengembangan varietas krisan mutan perlu dilaksanakan secara berkelanjutan yang diikuti pengembangan industri benihnya. Benih pemulia (BS) berupa planlet diaklimatisasi pada media sekam bakar dengan kondisi lingkungan yang optimal (cahaya rendah dan lembap). Hasil aklimatisasi digunakan sebagai tanaman induk yang akan menghasilkan setek pucuk sebagai benih dasar (FS). Benih dasar (FS) diturunkan menjadi benih pokok (SS) dan benih sebar (ES) untuk dimanfaatkan petani guna mendukung pengembangan agribisnis krisan