188 research outputs found
Analisa Ekonomi Perbaikan Jalan Palembang - Betung Kab. Banyuasin terhadap Nilai Kerugian Akibat Kemacetan
Jalan merupakan prasarana transportasi darat dalam menunjang perekonomian dan pergerakan serta syarat mutlak bagi perkembangan dan pembangunan suatu daerah. Jalan Palembang – Betung yang terletak di Kab. Banyuasin merupakan jalan nasional yang menghubungkan jaringan pergerakan transportasi nasional sepanjang Pulau Sumatera yang dikenal dengan Jalan Lintas Timur. Jalan ini juga merupakan salah satu arus utama perpindahan dari dan ke ibukota Provinsi Sumatera Selatan yaitu Palembang. Namun, pergerakan tersebut selalu terhambat oleh kendala utama yakni kemacetan yang disebabkan oleh volume kendaraan yang tinggi dan kerusakan jalan sepanjang pintu masuk hingga beberapa kilometer setelahnya. Penelitian ini bertujuan untuk mencari nilai perbaikan jalan Palembang – Betung Kab. Banyuasin, nilai kerugian akibat kemacetan serta perbandingan diantara keduanya. Metodologi yang digunakan dalam penelitian ini mulai dari studi pendahuluan dan literatur, pengumpulan dan pengolahan data, analisis biaya perbaikan jalan, analisis biaya perjalanan dan analisis ekonomi. Dari hasil penelitian, didapat kerugian akibat kemacetan dan pemborosan Biaya Operasi Kendaraan (BOK) mencapai Rp 66,045,211,695 dan Rp 1,420,967,693,713 pada tahun 2024. Dengan perbaikan dan perlebaran jalan menjadi 15 m (4/2 UD) sepanjang 10 km yaitu pada STA 0+000 – 10+000 dibutuhkan biaya proyek sebesar Rp 70,073,239,000, dengan pemeliharaan jalan tahunan, total biaya proyek menjadi Rp 86,096,403,927 pada tahun 2024. Investasi perbaikan jalan ini layak secara ekonomi karena dari hasil perhitungan NPV didapat nilai Rp 685,596,547,175.94 dan BCR dengan nilai 16,5
State of the Art Review on Mobile Robots and Manipulators for Humanitarian Demining
Robotics solutions properly sized with suitable modularized structure and well adapted to local conditions of dangerous unstructured areas can greatly improve the safety of personnel as well as the work efficiency, productivity and flexibility. In this sense, mobile systems equipped with manipulators for detecting and locating antipersonnel landmines are considered of most importance towards autonomous/semi-autonomous mine location in a proficient, reliable, safer and effective way. This paper reviews the most relevant literature and previous research activity regarding mobile robots and manipulators for humanitarian demining.Robotics solutions properly sized with suitable modularized structure and well adapted to local conditions of dangerous unstructured areas can greatly improve the safety of personnel as well as the work efficiency, productivity and flexibility. In this sense, mobile systems equipped with manipulators for detecting and locating antipersonnel landmines are considered of most importance towards autonomous/semi-autonomous mine location in a proficient, reliable, safer and effective way. This paper reviews the most relevant literature and previous research activity regarding mobile robots and manipulators for humanitarian demining
Mesozoic rock suites along western Philippines: Exposed proto-South China Sea fragments?
An ancient oceanic crustal leading edge east of mainland Asia, the proto-South China Sea crust, must have existed during the Mesozoic based on tectonic reconstructions that accounted for the presence of subducted slabs in the lower mantle and the exposed oceanic lithospheric fragments strewn in the Philippine and Bornean regions. Along the western seaboard of the Philippine archipelago, numerous Mesozoic ophiolites and associated lithologies do not appear to be genetically associated with the younger Paleogene-Neogene ocean basins that currently surround the islands. New sedimentological, paleomagnetic, paleontological, and isotopic age data that we generated are presented here, in combination with our previous results and those of others, to reassess the geological make-up of the western Philippine island arc system. We believe that the oceanic lithospheric fragments, associated melanges, and sedimentary rocks in this region are exhumed slivers of the proto-South China Sea ocean plate
Slab rollback and microcontinent subduction in the evolution of the Zambales Ophiolite Complex (Philippines) : A review
New radiolarian ages show that the island arc-related Acoje block of the Zambales Ophiolite Complex is possibly of Late Jurassic to Early Cretaceous age. Radiometric dating of its plutonic and volcanic-hypabyssal rocks yielded middle Eocene ages. On the other hand, the paleontological dating of the sedimentary carapace of the transitional mid-ocean ridge – island arc affiliated Coto block of the ophiolite complex, together with isotopic age datings of its dikes and mafic cumulate rocks, also yielded Eocene ages. This offers the possibility that the Zambales Ophiolite Complex could have: (1) evolved from a Mesozoic arc (Acoje block) that split to form a Cenozoic back-arc basin (Coto block), (2) through faulting, structurally juxtaposed a Mesozoic oceanic crust with a younger Cenozoic lithospheric fragment or (3) through the interplay of slab rollback, slab break-off and, at a later time, collision with a microcontinent fragment, caused the formation of an island arc-related ophiolite block (Acoje) that migrated trench-ward resulting into the generation of a back-arc basin (Coto block) with a limited subduction signature. This Meso-Cenozoic ophiolite complex is compared with the other oceanic lithosphere fragments along the western seaboard of the Philippines in the context of their evolution in terms of their recognized environments of generation
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Erratum to: 36th International Symposium on Intensive Care and Emergency Medicine: Brussels, Belgium. 15-18 March 2016.
[This corrects the article DOI: 10.1186/s13054-016-1208-6.]
MAGIC upper limits on the very high energy emission from GRBs
The fast repositioning system of the MAGIC Telescope has allowed during its
first data cycle, between 2005 and the beginning of year 2006, observing nine
different GRBs as possible sources of very high energy gammas. These
observations were triggered by alerts from Swift, HETE-II, and Integral; they
started as fast as possible after the alerts and lasted for several minutes,
with an energy threshold varying between 80 and 200 GeV, depending upon the
zenith angle of the burst. No evidence for gamma signals was found, and upper
limits for the flux were derived for all events, using the standard analysis
chain of MAGIC. For the bursts with measured redshift, the upper limits are
compatible with a power law extrapolation, when the intrinsic fluxes are
evaluated taking into account the attenuation due to the scattering in the
Metagalactic Radiation Field (MRF).Comment: 25 pages, 9 figures, final version accepted by ApJ. Changet title to
"MAGIC upped limits on the VERY high energy emission from GRBs", re-organized
chapter with description of observation, removed non necessaries figures,
added plot of effective area depending on zenith angle, added an appendix
explaining the upper limit calculation, added some reference
Unfolding of differential energy spectra in the MAGIC experiment
The paper describes the different methods, used in the MAGIC experiment, to
unfold experimental energy distributions of cosmic ray particles (gamma-rays).
Questions and problems related to the unfolding are discussed. Various
procedures are proposed which can help to make the unfolding robust and
reliable. The different methods and procedures are implemented in the MAGIC
software and are used in most of the analyses.Comment: Submitted to NIM
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