ANALISIS DINDING MECHANICALLY STABILIZED EARTH (MSE) (STUDI KASUS: RUAS JALAN TOL MANADO BITUNG STA 6+475)

Pada ruas jalan Tol Manado Bitung akan dibuat jalan diatas permukaan tanah yang miring sehingga perlu penimbunan tanah agar elevasi tanah sesuai perencanaan. Hal tersebut dapat menyebabkan kelongsoran apabila tidak diberi pengaman lereng pada area tanah timbunan. Pada penelitian ini dilakukan analisis pengaplikasian dinding Mechanically Stabilized Earth (MSE) yang direncanakan mulai dari kestabilan ekternal, internal dan global dengan variasi panjang perkuatan 0,3 He; 0,4 He; 0,5 He; 0,6 He; 0,7 He; 0,8 He; 0,9 He (He = Tinggi dinding MSE), jarak vertikal perkuatan 1 m; 1,2 m; 1,5 m; 2 m; 3 m dan jenis geogrid UX 1100, UX 1400, UX 1500, UX 1600, UX 1700, dan UX 1800.Hasil penelitian menunjukkan bahwa lereng eksisting pada ruas jalan Tol Manado Bitung STA 6+475 memiliki faktor keamanan lebih dari 1 sehingga dapat dikategorikan aman. Dalam mengaplikasikan dinding MSE pada lokasi studi kasus dengan dimensi yang direncanakan untuk panjang perkuatan 0,6 He dan 0,5 He memenuhi syarat kestabilan eksternal namun tidak memenuhi syarat kestabilan internal. Stabilitas global dengan menggunakan kohesi tanah 20 kPa sebagai facing sudah memenuhi persyaratan stabilitas global yakni diatas 1,3 sehingga lereng dengan perkuatan dinding MSE yang direncanakan dapat digunakan. Kata kunci: “Dinding MSE”,” Lereng”, “Geogrid”.

PENGARUH PENAMBAHAN ZEOLITE TERHADAP KUAT GESER PADA TANAH BERLEMPUNG

Permasalahan dalam pembangunan suatu konstruksi diantaranya kondisi tanah yang tidak mendukung. Diperlukan metode perbaikan tanah untuk mengatasi permasalahan seperti itu. Stabilisasi kimiawi merupakan salah satu alternatif untuk memperbaiki kondisi tanah tersebut. Penelitian ini menggunakan zeolite sebagai bahan stabilisasi, yaitu mencampur zeolite dengan tanah yang digunakan, dengan variasi campuran 5%, 10%, 15%  dan 20% zeolite terhadap berat contoh tanah. Tujuannnya untuk meningkatkan kuat geser pada tanah yang diteliti. Berdasarkan hasil penelitian, penambahan zeolite memberikan pengaruh yang signifikan terhadap kuat geser. Kuat geser mula-mula 0,128 kg/cm2 berubah menjadi 0,546 kg/cm2 dengan variasi campuran 20% zeolite. Variasi penambahan 20% zeolite memberikan hasil yang paling besar dibandingkan 5%, 10% dan 15% zeolite. Semakin besar jumlah zeolite yang digunakan semakin besar pula pengaruh yang diberikan. Kata kunci: Kuat Geser, Stabilisasi kimiawi, Zeolit

Designing a Multistage Flood Control Channel for Sediment and Flow Management in Coastal Areas

Flow and sediment are the two main parameters that significantly influence the flood. Flooding results in riverbed degradation, adversely affecting the construction of the river and the environment. Therefore, it is essential to engineer the profile of the flood control channel in the selected area of Likupang Pulisan Beach. This research seeks to develop a design that mitigates the adverse effects caused by flooding and sediment movement, resulting in geological and ecological disasters. The amount of rainfall and watershed characteristics become input data in the HEC-HMS application to obtain the amount of planned flood discharge. Measurement and mapping of river geometry were conducted. This data is used in the HEC-RAS application, which will simulate flow conditions in the field in real time. From the analysis of the flood control channel profile engineering, the dimensions of a multi-stage trapezium channel with top width (La) = 10 m, bottom width (Lb) = 1 m, and height (h) = 3 m were obtained, which can drain a flood discharge of 36.5 m³/s. The novelty of this research is the design of a multilevel channel profile that is implemented in a tourist area with the aim of flood control

Orthodontics in the era of big data analytics

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/149344/1/ocr12279_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/149344/2/ocr12279.pd

Selecting effective incentive structures in health care: A decision framework to support health care purchasers in finding the right incentives to drive performance

<p>Abstract</p> <p>Background</p> <p>The Ontario health care system is devolving planning and funding authority to community based organizations and moving from steering through rules and regulations to steering on performance. As part of this transformation, the Ontario Ministry of Health and Long-Term Care (MOHLTC) are interested in using incentives as a strategy to ensure alignment – that is, health service providers' goals are in accord with the goals of the health system. The objective of the study was to develop a decision framework to assist policymakers in choosing and designing effective incentive systems.</p> <p>Methods</p> <p>The first part of the study was an extensive review of the literature to identify incentives models that are used in the various health care systems and their effectiveness. The second part was the development of policy principles to ensure that the used incentive models are congruent with the values of the Ontario health care system. The principles were developed by reviewing the Ontario policy documents and through discussions with policymakers. The validation of the principles and the suggested incentive models for use in Ontario took place at two meetings. The first meeting was with experts from the research and policy community, the second with senior policymakers from the MOHLTC. Based on the outcome of those two meetings, the researchers built a decision framework for incentives. The framework was send to the participants of both meetings and four additional experts for validation.</p> <p>Results</p> <p>We identified several models that have proven, with a varying degree of evidence, to be effective in changing or enabling a health provider's performance. Overall, the literature suggests that there is no single best approach to create incentives yet and the ability of financial and non-financial incentives to achieve results depends on a number of contextual elements. After assessing the initial set of incentive models on their congruence with the four policy principles we defined nine incentive models to be appropriate for use in Ontario and potentially other health care systems that want to introduce incentives to improve performance. Subsequently, the models were incorporated in the resulting decision framework.</p> <p>Conclusion</p> <p>The design of an incentive must reflect the values and goals of the health care system, be well matched to the performance objectives and reflect a range of contextual factors that can influence the effectiveness of even well-designed incentives. As a consequence, a single policy recommendation around incentives is inappropriate. The decision framework provides health care policymakers and purchasers with a tool to support the selection of an incentive model that is the most appropriate to improve the targeted performance.</p

A Survey of Bayesian Statistical Approaches for Big Data

The modern era is characterised as an era of information or Big Data. This has motivated a huge literature on new methods for extracting information and insights from these data. A natural question is how these approaches differ from those that were available prior to the advent of Big Data. We present a review of published studies that present Bayesian statistical approaches specifically for Big Data and discuss the reported and perceived benefits of these approaches. We conclude by addressing the question of whether focusing only on improving computational algorithms and infrastructure will be enough to face the challenges of Big Data