Pembangunan Aplikasi Game Android Pengenalan Pola Warna Pada Paud Posdaya

Pendidikan anak usia dini (PAUD) adalah jenjang pendidikan sebelum jenjang pendidikan dasar yang merupakan suatu upaya pembinaan yang ditujukan bagi anak berusia dua sampai dengan usia enam tahun. Salah satu aspek dalam kecerdasan yang harus dikembangkan oleh anak usia dini adalah warna. Mereka harus mengenal berbagai jenis warna yang ada. Hal ini harus dilatih untuk mempersiapkan anak usia dini masuk ke jenjang pendidikan selanjutnya. Selain itu, pengenalan warna untuk anak usia dini juga dapat mendeteksi dan mengidentifikasi buta warna pada anak. Hal ini sangatlah penting untuk kelanjutan kehidupan anak dan pendidikan yang akan orang tua berikan kepada anak. Dalam penelitian ini akan dibuat pengenalan pola warna dalam bentuk permainan ponsel dimana saat ini banyak orang tua sudah menggunakan ponsel pintar dalam kehidupan sehari-hari sehingga kita dapat memanfaatkan ponsel pintar tersebut untuk pendidikan. Pengembangan aplikasi ini menggunakan android studio. Pengembangan aplikasi ini menggunakan metode Systems Development Life Cycle. Aplikasi yang dihasilkan adalah program game yang dapat dipasang dalam ponsel pintar khususnya Android. Seluruh fungsionalitas dalam aplikasi ini sudah diuji dan dapat memenuhi harapan dari peneliti untuk mengemas pendidikan dalam game. Pengemasan pendidikan dalam rupa game juga akan menambah daya tertarik anak untuk mempelajari sesuatu yang baru

Effect of Coriaria arborea on seed banks during primary succession on Mt Tarawera, New Zealand

An experiment was conducted over two years to investigate the effect of Coriaria arborea, a native nitrogen-fixing shrub, on soil seed banks at sites representing a post-volcanic successional sequence on Mt Tarawera, New Zealand. The sites ranged from bare volcanic ash and lapilli substrate, through low-growing pre-Coriaria vegetation, to dense stands of Coriaria scrub. Soils (to a depth of 50 mm) under recently established Coriaria and older stands had more seedlings (1096 and 1585 seedlings 0.4 m-2, respectively) and species (37 and 45 species 0.4 m-2, respectively) emerge than where there was no Coriaria (243-320 seedlings 0.4 m-2, 14-25 species 0.4 m-2) and were the only soils with Coriaria seedlings. In total, 3488 seedlings representing 63 taxa were recorded. Seeds were still germinating after 24 months but rates declined markedly in the second year. For example, Coriaria reached a germination peak at 8 weeks but continued to germinate sporadically over the 2-year period. Tree species present in young forest within 0.5 km of the sites were absent. Establishment of Coriaria greatly accelerated an underlying trend of gradually increasing abundance and diversity of seeds in the soil with vegetation age. Adventive, wind-dispersed, and annual species were over-represented in the seed banks compared with the regional evergreen forest-dominated flora. These proportions are expected to decline as succession to forest gradually occurs

Efficient preconditioning of the linearized Navier-Stokes equations

We outline a new class of robust and efficient methods for solving subproblems that arise in the linearization and operator splitting of Navier-Stokes equations. We describe a very general strategy for preconditioning that has two basic building blocks; a multigrid V-cycle for the scaler convection-diffusion operator, and a multigrid V-cycle for a pressure Poisson operator. We present numerical experiments illustrating that a simple implementation of our approach leads to an effective and robust solver strategy in that the convergence rate is independent of the grid, robust with respect to the time step, and only deteriorates very slowly as the Reynolds number is increased

Emerging Ionic Polymers for CO2 Conversion to Cyclic Carbonates: An Overview of Recent Developments

In this mini review, we highlight some key work from the last 2 years where ionic polymers have been used as a catalyst to convert CO2 into cyclic carbonates. Emerging ionic polymers reported for this catalytic application include materials such as poly(ionic liquid)s (PILs), ionic porous organic polymers (iPOPs) or ionic covalent organic frameworks (iCOFs) among others. All these organic materials share in common the ionic moiety cations such as imidazolium, pyridinium, viologen, ammonium, phosphonium, and guanidinium, and anions such as halides, [BF4]-, [PF6]-, and [Tf2N]-. The mechanistic aspects and efficiency of the CO2 conversion reaction and the polymer design including functional groups and porosity are discussed in detail. This review should provide valuable information for researchers to design new polymers for important catalysis applications

Double layer in ionic liquids: Overscreening vs. crowding

We develop a simple Landau-Ginzburg-type continuum theory of solvent-free ionic liquids and use it to predict the structure of the electrical double layer. The model captures overscreening from short-range correlations, dominant at small voltages, and steric constraints of finite ion sizes, which prevail at large voltages. Increasing the voltage gradually suppresses overscreening in favor of the crowding of counterions in a condensed inner layer near the electrode. The predicted ion profiles and capacitance-voltage relations are consistent with recent computer simulations and experiments on room-temperature ionic liquids, using a correlation length of order the ion size.Comment: 4 pages + supplementary informatio