Improving the Quality of Teaching Learning Process of Writing Class Through Lesson Study

Lesson Study (LS) is a professional development process that Japanese teachers engage into systematicallyexamine their practice, with the goal of becoming more effective. In the application teachers or lecturers mustalways improve the quality of teaching learning process that covers preparing syllabus and lesson plan,creating conducive classroom atmosphere and carrying assessment. They can do by cooperating with theircolleagues to reach better results. Many teachers are satisfied with the results of teaching learning process. Infact, there are many weaknesses that they do not realize. This research was carried out to answer thequestion: How does LS improve the quality of teaching learning process of writing class? The results provethat there are a lot of improvements on writing class, e.g. the materials are more challenging, the students aremore actively involved during the interaction, the lecturer has more open to receive critics from her colleague,and the students get better achievement in writing

Pengetahuan Klien Tentang Diabetes Melitus Tipe 2 Berpengaruh Terhadap Kemampuan Klien Merawat Kaki

Upaya pencegahan primer pada pengelolaan kaki diabetik bertujuan untuk mencegah luka kaki secara dini. Penelitian ini bertujuan untuk mengetahui hubungan pengetahuan dan praktik perawatan kaki pada klien diabetes melitus tipe 2 di Kalimantan Selatan. Penelitian ini merupakan deskriptif korelasi dengan desain cross sectional dan jumlah sampel sebanyak 106 orang. Hasil analisis Chi Square menunjukkan adanya hubungan yang bermakna antara pengetahuan dengan praktik perawatan kaki pada klien diabetes melitus tipe 2 (p= 0,04; α= 0,05). Faktor pengetahuan memiliki peluang 2,38 kali untuk melakukan praktik perawatan kaki. Perlu dikembangkan pendidikan kesehatan tentang perawatan kaki dan pemeriksaan kaki

In-situ surface technique analyses and ex-situ characterization of Si1-xGex epilayers grown on Si(001)-2 ×1 by molecular beam epitaxy

Si1-xGex epilayers grown by Molecular Beam Epitaxy on Si(001) at 400 ○C have been analyzed in-situ by surface techniques such as X-ray and Ultraviolet Photoelectron Spectroscopies (XPS and UPS), Low Energy Electron Diffraction (LEED) and photoelectron diffraction (XPD). The Ge surface concentrations (x) obtained from the ratios of Ge and Si core level intensities are systematically higher than those obtained by the respective evaporation fluxes. This indicates a Ge enrichment in the first overlayers confirmed by Ge-like UPS valence band spectra. The structured crystallographic character of the epilayers is ascertained by LEED and XPD polar scans in the (100) plane since the Ge Auger LMM and the Si 2p XPD intensity patterns from the Si1-xGex epilayers are identical to those of the Si substrate. The residual stress in the epilayer is determined by ex-situ X-ray diffraction (XRD) which also allows, as Rutherford Back Scattering (RBS), Ge concentration determinations

Experimental and numerical analysis of the thermal performance of PCM-impregnated reticular structures obtained by additive manufacturing

This paper proposes a combined experimental and numerical analysis of the melting of three different paraffin waxes embedded in reticular structures fabricated by additive manufacturing. The parent material of the reticular structures is AlSi10Mg. Metal structures, having a 100 mm square base and a thickness of 20 mm, were printed between two 10 mm thick plates. Samples were positioned in an upright position and laterally heated applying different heat fluxes. Three different paraffins were tested, with different characteristic melting temperatures (42 °C, 55 °C, and 64 °C), which are suitable for electronics cooling applications. Four different structures were tested, having a cell length of 5 mm and 10 mm, and porosities of 0.87 and 0.93. Besides the experimental tests, numerical simulations of the melting phenomenon were carried out using a purely conductive model implemented in ANSYS Fluent. The discretized numerical domains represented just small repetitive portions of the test modules, thus allowing substantial computational time savings. This simplified method has been proven to yield results that are in good agreement with the experimental data. The main outcome of this work is the setup of the simplified numerical procedure, which was then validated and used to investigate the effectiveness of the considered structures in diffusing heat into the low thermal conductivity phase change materials. It was concluded that the best overall thermal performance can be obtained with low porosity and low cell size since this enables faster melting processes and better surface temperature control

Numerical analysis of the thermal energy storage in cellular structures filled with phase-change material

This paper reports the results of a numerical study on the thermal performance of metal cellular structures that can be obtained by additive manufacturing (selective laser melting) when they are impregnated with phase change material (PCM) for possible applications in electronic cooling. Two body-centered cubic (BCC) periodic structures with cell sizes of 5 mm and 10 mm and a porosity of 87%, made of two solid materials (aluminum alloy and copper), and two paraffins with characteristic melting temperatures of 55 and 64 °C were considered. The numerical simulations are carried out using the commercial code ANSYS Fluent and are based on a previously validated purely conductive heat transfer model. The computational domains include just small repetitive portions of the considered composite structures, thus allowing substantial savings of computational time. Computed results show that, with both paraffins, the copper made finer BCC structure (5 mm) yields the best thermal performances, i.e, the shortest PCM melting time and the highest rate of thermal energy storage during transients

Pengawasan Market Conduct Terhadap Layanan Peer to Peer Lending (P2P Lending) Ditinjau dari Peraturan Otoritas Jasa Keuangan No. 01/POJK.07/2013

AbstrakTerselenggaranya kegiatan jasa keuangan yang transparan, berkeadilan, dan berintegritas merupakan tujuan utama dibentuknya otoritas jasa keuangan. Salah satu cara untuk mencapai tujuan tersebut adalah melalui pengawasan, termasuk pengawasan Peer to Peer Lending (P2P Lending). Fokus tulisan ini mengkaji pelaksanaan pengawasan pasar dalam perspektif P2P Lending POJK No. 01/ POJK.07/2013.Berdasarkan hasil penelitian yang penulis lakukan, pengawasan pasar yang dilakukan oleh OJK belum dilakukan secara maksimal. Kondisi ini karena POJK No.01//POJK.07/2013 belum mengatur secara spesifik tanggal definisi, bentuk, dan mekanisme perilaku pasar yang dilakukan oleh OJK.Ketentuan Pasal 34 dan Pasal 48 POJK No.01//POJK.07/2013 hanya memiliki korelasi yang paling dekat, namun wujud pengawasan market conduct sebenarnya ada pada layanan P2P Lending. Kata kunci: Pengawasan, Perilaku Pasar, Peer to Peer Lending AbstractThe implementation of financial services activities that are transparent, fair, and with integrity is the main objective of the establishment of a financial services authority. One of the ways to achieve this goal is through supervision, including supervision of Peer to Peer Lending (P2P Lending). The focus of this paper examines the implementation of market supervision in P2P Lending perspective POJK No. 01/POJK.07/2013. Based on the results of the research that the author has done, market supervision carried out by OJK has not been carried out optimally. This condition is because POJK No.01//POJK.07/2013 has not specifically regulated the date of definition, form and mechanism of market conduct carried out by OJK. The provisions of Article 34 and Article 48 of POJK No.01//POJK.07/2013 only have the closest correlation, but the manifestation of market conduct supervision is actually in P2P Lending services. Keywords: Supervision, Market Conduct, Peer to Peer Lendi

Numerical Investigation of Pressure Drop and Heat Transfer through Reconstructed Metal Foams and Comparison against Experiments

Direct numerical simulation of transport in foam materials can benefit from realistic representations of the porous-medium geometry generated by employing non-destructive 3D imaging techniques. X-ray microtomography employs computer-processed X-rays to produce tomographic images or slices of specific regions of the object under investigation, and is ideally suited for imaging opaque and intricate porous media. In this work, we employ micro-CT for numerical analysis of air flow and convection through four different high-porosity copper foams. All four foam samples exhibit approximately the same relative density (6.4% - 6.6% solid volume fraction), but have different pore densities (5, 10, 20, and 40 pores per inch, PPI). A commercial micro-computed tomography scanner is employed for scanning the 3D microstructure of the foams at a resolution of 20 μm, yielding stacks of two-dimensional images. These images are processed in order to reconstruct and mesh the real, random structure of the foams, upon which simulations are conducted of forced convection through the pore spaces of the foam samples. The pressure drop values from this μCT based CFD analysis are compared against prior experimental results; the computational interfacial heat transfer results are compared against the values predicted by an empirical correlation previously reported, revealing excellent agreement between the numerical and experimental/empirical hydraulic and thermal results, thus highlighting the efficacy of this novel approach

Democracy, protest and public sphere in Russia after the 2011–2012 anti-government protests: digital media at stake

The 2011–2012 Russian protest mobilisations were largely enabled by the rise of social networks. Social and technological advancements paired to pave the way for the ‘biggest protests since the fall of USSR’. Ubiquitous and uncensored social media facilitated the networking and mobilisation for this protest activity: Liberal masses were able to share and discuss their grievances, unite and coordinate online for the offline protest. The digitally savvy protest public developed to confront the government, which appeared to be astonished by the scale of protest. Those mobilisations marked an important gap between the government’s conception of the society and the real state of resistance. This article studies three main hypotheses regarding the potential of the protest movement in Russia. The hypotheses were drawn from recent sociological, political and media studies on Russian resistance. Current research aims to contribute to the debate from the digital media perspective. It therefore evaluates three main assumptions: Digital media have the potential to empower, dependent upon the relevant political, social and economic factors; digital media isolates protest publics and therefore may be more useful for the government than the resistance; and recent censorship of digital media communication signals a tightening of both formal and informal restrictions against opposition and protest politics. This article uses theoretical and factual evidence on the limitations of democracy and the public sphere and conceptualises the government’s management of resistance in Russia during and after the 2011–2012 protests. It studies how the hybrid political regime in Russia balances restrictions on freedom of speech with strengthened state propaganda and how it mediates media oppression and invites self-censorship. Finally, it examines how the state communication watchdog has recently focused its attention at the digital realm. This move confirms the importance of the online protest communication for the Russian political environment. Yet the state’s acknowledgement of digital political resistance may lead to further oppression and curbing of this emerging component of Russian politics

Determining Material Response for Polyvinyl Butyral (PVB) in Blast Loading Situations

Protecting structures from the effect of blast loads requires the careful design of all building components. In this context, the mechanical properties of Polyvinyl Butyral (PVB) are of interest to designers as the membrane behaviour will affect the performance of laminated glass glazing when loaded by explosion pressure waves. This polymer behaves in a complex manner and is difficult to model over the wide range of strain rates relevant to blast analysis. In this study, data from experimental tests conducted at strain rates from 0.01 s−1 to 400 s−1 were used to develop material models accounting for the rate dependency of the material. Firstly, two models were derived assuming Prony series formulations. A reduced polynomial spring and a spring derived from the model proposed by Hoo Fatt and Ouyang were used. Two fits were produced for each of these models, one for low rate cases, up to 8 s−1, and one for high rate cases, from 20 s−1. Afterwards, a single model representing all rates was produced using a finite deformation viscoelastic model. This assumed two hyperelastic springs in parallel, one of which was in series with a non-linear damper. The results were compared with the experimental results, assessing the quality of the fits in the strain range of interest for blast loading situations. This should provide designers with the information to choose between the available models depending on their design needs

Forensic Diagnosis of Freshwater or Saltwater Drowning Using the Marker Aquaporin 5: An Immunohistochemical Study

Background and Objectives: Aquaporins are a family of water channel proteins. In this study, the renal and intrapulmonary expression of aquaporin-5 (AQP5) was examined in forensic autopsy cases to evaluate it as a drowning marker and to differentiate between freshwater drowning and saltwater drowning. Materials and Methods: Cases were classified into three groups: freshwater drowning (FWD), saltwater drowning (SWD), and controls (CTR). Samples were obtained from forensic autopsies at less than 72 h postmortem (15 FWD cases, 15 SWD cases, and 17 other cases) and were subjected to histological and immunohistochemical investigations. Results: In FWD group, intrapulmonary AQP5 expression was significantly suppressed compared with SWD and CTR; there was no significant difference in AQP5 expression among the other two groups. The same differences in expression were also observed in the kidney. Conclusions: These observations suggest that AQP5 expression in alveolar cells was suppressed by hypotonic water to prevent hemodilution. Moreover, it is possible to hypothesize that in the kidney, with the appearance of hypo-osmotic plasma, AQP5 is hypo-expressed, as a vital reaction, to regulate the renal reabsorption of water. In conclusion, the analysis of renal and intrapulmonary AQP5 expression would be forensically useful for differentiation between FWD and SWD, or between FWD and death due to other causes