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Seismogram Analysis of Indonesian Earthquakes at DAV Observation Station

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Earthquake Research in China 2009年第2期23卷 210-222页

作者： Bagus Jaya santosa Prodi Geofisika FMIPA ITS

The S-wave velocity across the earth structure under Indonesia for Indonesia earthquakes has been investigated through seismogram analysis, simultaneously in the time domain and three Cartesian components. The data were recorded at DAV observational station, the Philippines. The main data set is the seismogram comparison between the measured and synthetic seismogram, instead of travel time data, as commonly used in other seismological research. The synthetic seismogram is calculated using the GEMINI method, which is equivalent to Mode Summation. The above seismogram comparison shows that the global earth mantle of PREMAN gives a deviating synthetic seismogram and has earlier arrival times than those of the measurement. The gradient of βh in the upper mantle layers is altered into a positive, rather than negative slope as stated in the PREMAN model, and negative corrections are imposed to the zero order of the polynomiars coefficients in all earth mantle layers. The excellent fitting, as well as travel time or waveform, is obtained from the surface waves of Love and Rayleigh, surface wave to the S and SS mantle waves as well as the core reflected waves. This result expresses that part of the earth mantle, due to a collision between India and Asia tectonic released zones, has a negative anomaly in S-wave velocity and vertical anisotropy in all of the earth mantle layers.

关键词： Seismogram analysis Vertical anisotropy Negative velocity anomaly

Fault Plane Identification Using Three Components Local Waveforms

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International Journal of Geosciences 2013年第6期4卷 993-1001页

作者： Bagus Jaya santosa Physics Department Faculty Mathematics and Science ITS Jl. ArifRahman Hakim I Surabaya Indonesia

A research has been conducted to estimate earthquake source parameters that occurred on June 3rd, 13th, 18th and 19th, 2008. The data used to determine the parameters of earthquakes source are three components local waveform that are recorded by three MY broadband stations (IPM, KOM and KUM) and PSI, Poseidon. In this research, we report a focal mechanism of events using three components local waveform analysis. The seismogram data are inverted to achieve the earthquake source parameters. Source parameters of earthquakes extracted after the reduction variant of each event are over 56%. To identify the fault plane, the HC-plot method is used.

关键词： 3 Components Local Waveform Earthquake Source Parameters

Seismogram Analysis of Earthquake C060394F,South Java: S-wave Velocity Structure

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Earthquake Research in China 2011年第3期25卷 310-319页

作者： Bagus Jaya santosa Prodi Geofisika FMIPAITS Surabaya

The S wave velocity structure between the hypocenter of C060394F earthquake,South Java and a series of observatory stations located in Australia and South-East Asia have been investigated through seismogram analysis in the time domain and the three Cartesian *** synthetic seismogram is constructed from the PREMAN global earth *** comparison between the measured and synthetic seismograms shows large discrepancies.A correction to the S wave velocity structure is needed to solve these *** analysis and fitting at the observatory stations located in Australia show a positive anomaly,whereas the stations in South-East Asia show a strong negative *** anisotropy occurred in the upper mantle layer and earth mantle layers beneath *** seismogram analysis in the time domain and the three components simultaneously provides a better picture of the earth model,compared to the analysis of the seismogram with arrival time,travel time difference and dispersion analysis.

关键词： Seismogram comparison Anomaly in the earth mantle Vertical anisotropy

Seismogram Analysis and Fitting of Three Earthquakes,West Papua,Recorded at Stations ENH and KMI,China

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Earthquake Research in China 2008年第2期22卷 206-217页

作者： Bagus Jaya santosa Prodi Geofisika FMIPAITS Surabaya

The S wave velocity structure of the earth below Eastern Southeast Asia has been investigated by analyzing the seismogram from surface wave to multiple depth waves in the time domain and three Cartesian components *** wave passes across the front area of subduction zone between the Philippine plate and the Asian *** main data are waveform comparisons,instead of the arrival *** synthetic seismogram is calculated using the GEMINI *** synthetic seismogram constructed by PREMAN global earth model deviates greatly from the measured *** solve this problem,corrections are needed for the β speed *** cover the gradient change of β_h,which turns from negative to positive in upper mantle layers as in the PREMAN,change of earth crust depth and change of zero order coefficients of β velocity function in all earth mantle ***,the fitting is obtained,as well as the arrival time or the waveform of Love and Rayleigh surface waves,the S wave and the repetitive depth waves ScS_2 and ScS_*** result reveals that the Southeast Asia,being stretched due to tectonic release,has a mantle in some parts with negative anomaly of S wave velocity and vertical anisotropy in all earth mantle layers.

关键词： Seismogram analysis Vertical anisotropy Negative anomaly and non-active seismic zone

Utilization Starch of Avocado Seed （Persea Americana Mill.） as a Raw Material for Dextrin

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Journal of Food Science and Engineering 2016年第1期6卷 32-37页

作者： Maryam Anwar Kasim santosa Agro-lndustrial Engineering Department Polytechnic of ATI Padang Jl. BungoP asang Tabing 25171 Padang West Sumatra Faculty of Agricultural Technology Andalas University Jl. LimauManis Pauh 25163 Padang West Sumatra

Starch ofavocado seeds can be used as an alternative source of starch because it contains 80.1% starch. Natural starch can be made into a modified starch, for example dextrin. Dextrin can be made by using acid or enzyme hydrolysis. The purposes of this research were determine the concentration of hydrochloric acid （HCl）, the temperature and heating timein the optimum process of hydrolysis of starch into dextrin and to determine the quality of the resulting product dextrin terms of Indonesian National Standard 01-2593-1992. The methode was used in this research is hydrolisis with hydrochloric acid （HCl）. The results processing into starch avocado seed yield is 23.15%. HCl concentration, temperature and heating time significantly affect the value of dextrose equivalent （DE）, viscosity and part soluble in cold water. There is interaction between HCl concentration, temperature and heating time on the value of DE, viscosity and part soluble in cold water. Optimum conditions of process was obtained at a concentration of 0.15 N HCl, 30 minutes heating time and heating temperature of 90 ℃. Dextrose equivalent （DE） value is 19.61%. The value of solubility in cold water is 90.19%. Viscosity value is 1.61 ° E. Dextrin is not accordance with the standards of quality parameters Indonesian National Standard 01-2593-1992. Dextrin produced should be applied to non-food industry.

关键词： Starch dextrin hydrolysis the optimum conditions

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装配式钢框架-减震围护墙单元力学性能分析

土木工程学报 2022年第S1期55卷 145-152页

作者： santosa Wongso 张超王昊梁志城黄炜元陈淇铭广州大学广东广州510006 道路与铁道工程安全保障省部共建教育部重点实验室(石家庄铁道大学) 河北石家庄050043 同济大学上海200092

为更好发挥减震围护墙对装配式钢框架单元力学性能的有利作用,采用ABAQUS软件建立了13个装配式钢框架-减震围护墙单元有限元模型,研究不同上、下层墙板单元高度比、减震层摩擦系数、墙板材质对框架单元的力学性能的影响及其规律,并给出... 详细信息

为更好发挥减震围护墙对装配式钢框架单元力学性能的有利作用,采用ABAQUS软件建立了13个装配式钢框架-减震围护墙单元有限元模型,研究不同上、下层墙板单元高度比、减震层摩擦系数、墙板材质对框架单元的力学性能的影响及其规律,并给出有关减震围护墙设计的建议。研究结果表明:增加上、下层墙板单元高度比、提高减震层摩擦系数和增大墙板材质密度均可一定程度提高框架的屈服荷载和水平承载力,且不会明显增加框架的刚度。因此,设计时可根据洞口尺寸需求尽量选取较大的上、下层墙板单元高度比,且当开设窗洞时,建议将窗洞设置在上层墙板单元。同时建议选取摩擦系数较大的材料制作减震层,并选用材质密度相对较大的墙板。

关键词：装配式钢框架减震围护墙力学性能有限元分析

Kidney transplantation in Indonesia: An update

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Asian Journal of Urology 2019年第4期6卷 305-311页

作者： Tommy Supit Eriawan Agung Nugroho Ardy santosa Moh Adi Soedarso Nanda Daniswara Sofyan Rais Addin Department of General Surgery Faculty of Medicine Diponegoro UniversityDr.Kariadi General HospitalSemarangJawa TengahIndonesia Department of Urology Faculty of Medicine Diponegoro UniversityDr.Kariadi General HospitalSemarangJawa TengahIndonesia

Objective:Indonesia has overcome several barriers to the growth of kidney transplantation within the past ***,the procedure is increasingly performed in several centers across the *** there are limited publications on kidney transplantation from Indonesia,especially from centers outside *** study aims to give a brief overview on transplantation performed,discuss current efforts and progresses of transplantation in Indonesia and chiefly ***:Retrospective analysis of 20 transplant cases in Semarang during 2014e2018 was *** from other transplant centers was acquired through formal correspondences with 11 central teaching hospitals in Jakarta,Surabaya,Yogyakarta,Malang,Bali,Solo,Palembang,Aceh,Medan,Bandung,and ***:There were 629 recorded kidney transplantations performed in 12 centers,and we report on 245 cases with viable *** average age of kidney recipients were younger(35.4 years old)compared to the donors(41.3 years old).Approximately half of the kidneys were obtained from related donors(49.0%)and there was only one case of cadaveric *** three leading etiologies of end-stage renal disease were hypertension(37.4%),diabetes mellitus(26.1%),and autoimmune disease(11.3%).There is only one center that has performed more than 100 kidney transplants in ***:Indonesia has successfully overcome several major hurdles that had previously hindered the growth of *** improvement should concentrate on the development of integrated organ transplant infrastructure,decentralization of transplant professionals,establishment of National kidney transplant database and changing the Nation’s paradigm on cadaveric organ donor through public education.

关键词： Kidney transplantation End-stage renal disease Chronic kidney disease Indonesia Semarang Epidemiology Update

The Harmony Concept between Government Program and Community Need to Achieve Sustainability

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Journal of Civil Engineering and Architecture 2011年第2期5卷 140-146页

作者： Idawarni Happy Ratna santosa Purwanita Setijanti Department of Architecture Institute Technology Sepuluh Nopember Surabaya Indonesia Hasanuddin University Makassar Indonesia

The background of research was conditions of settlement in slum area at Tallo which are most apprehensive; lack of facilities, the houses made of flammable materials, and some criminal action occurred in the density settlement. Upgrading Programs has been twice implemented in this area. However, those have the same aim, to improve street and drainage condition around the area. The different between of them is the using of material which are the first program used asphalt as street cover material and the second one used paving blok. Although the upgrading programs had done, the condition of the settlement did not improve significantly. The problems in settlement were not only leak in infrastructure condition and needs, but also lake of community welfare, unemployment, housing conditions, and the existence of the warehouses in the settlement. The flood problems also appeared in this area which closed with the water channel to the city disposal channel so when rainy season, the area is always flooded and enter into the entrance of the houses. The objective of this research was to find the root of the problems and find good solutions for the environment and how to meet the major needs of the settlement upgrading program into the local community point of view. Field research and questioners was conducted as research method to the research objectivities in the needs of community for good environment. Furthermore, the data from the field research was analyzed by making synchronization with the theory of environmental sustainability. Results from this research showed the comparison study between first and the last condition of the settlement area which had the upgrading program implementation. These findings could provide a new guideline for the government in policy related to slum upgrading.

关键词： Harmony government program community need sustainable.

Using Differential Evolution Method to Solve Crew Rostering Problem

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Applied Mathematics 2010年第4期1卷 316-325页

作者： Budi santosa Andiek Sunarto Arief Rahman 不详

Airline crew rostering is the assignment problem of crew members to planned rotations/pairings for certain month. Airline companies have the monthly task of constructing personalized monthly schedules (roster) for crew members. This problem became more complex and difficult while the aspirations/criterias to assess the quality of roster grew and the constraints increased excessively. This paper proposed the differential evolution (DE) method to solve the airline rostering problem. Different from the common DE, this paper presented random swap as mutation operator. The DE algorithm is proven to be able to find the near optimal solution accurately for the optimization problem. Through numerical experiments with some real datasets, DE showed more competitive results than two other methods, column generation and MOSI (the one used by the Airline). DE produced good results for small and medium datasets, but it still showed reasonable results for large dataset. For large crew rostering problem, we proposed decomposition procedure to solve it in more efficient manner using DE.

关键词： Differential Evolution Crew Scheduling Pairing Rostering