A Proposal of Seismic Index for Existing Buildings in Indonesia using Pushover Analysis

Indonesia has often suffered major earthquake damage over the past 50 years. There are thousands of buildings in earthquake-prone regions that still need seismic evaluation and rehabilitation. One method of evaluating the seismic performance of an existing building is by assessing it using the Japanese seismic index for structures. A basic seismic index can be calculated based on the strength and ductility criteria. The strength and ductility performance of a structure can be obtained by pushing a building until it reaches its maximum deformation capacity. This paper describes a proposal to obtain a basic seismic index using pushover analysis. Its adjustment to determine a seismic demand index by considering seismic hazard in Indonesia was carried out using the capacity spectrum method. Two existing buildings in Indonesia were evaluated. The evaluation result indicated that both buildings were in safe condition. The proposal of the seismic index method can be useful in determining the performance index of existing structures. The ductility index can also be used to estimate the response modification factor of a structure

Seismic performance evaluation of existing building using Seismic Index method

Indonesia has frequently suffered major damaging earthquakes over the past 50 years. There are thousands of buildings in earthquakeprone regions that require seismic evaluation and rehabilitation. This paper describes a study about the seismic evaluation of existing buildings using seismic index method based on a Japanese standard. The basic seismic index is calculated based on the criteria of strength and ductility. Two existing buildings have been evaluated in this research. The first building consists of five stories and the second one has four. The seismic index of the structure has a different value for each story. The minimum seismic index occurs on the ground floor, and the index increases as the number of stories increase. The top floor has the maximum seismic index of all stories. The structure’s seismic safety shall be judged if the seismic index (Is) is greater than the seismic demand index (Iso). As a result of the evaluation, buildings A, and B are in an unsatisfactory condition. Especially for the three lower floors of both of buildings. It is also confirmed by drift angle that they exceed the required limit. To sum up, evaluation by using Japanese standards can be applied to building conditions in Indonesia

State-of-the-art of seismic response evaluation methods for metal roof spatial structures

[EN] The present paper is a result of a collaboration in IASS WG 8 for metal spatial structures to prepare state-ofthe-art reviews for earthquake response analysis methods and equivalent static seismic loads for metal spatial structures. It quotes mainly investigations from IASS symposia and related journals. First, the dynamic response characteristics of metal spatial structures are briefly explained. This is followed by a review of analytical methods for evaluating earthquake responses. Finally the equivalent seismic loads proposed for metal spatial structures are reviewed and some comments for future analysis of failure and fragility are provided.Nakazawa, S.; Kato, S.; Takeuchi, T.; Xue, S.; Lazaro, C. (2012). State-of-the-art of seismic response evaluation methods for metal roof spatial structures. Journal- International Association for Shell and Spatial Structures. 53(2):117-130. http://hdl.handle.net/10251/48932S11713053

Efficiency of a new steel hysteretic device for an intermediate seismic isolation system applied to reticular domes

p. 312-322The present paper discusses the efficiency of a new steel hysteretic device, abbreviated as ¿J-damper¿, proposed for an intermediate seismic isolation system of spatial structures. In order to show the effectiveness, a series of dynamic response analyses of single layer reticular domes are performed considering wave passage effects. From the energy consumption concept, it is shown that the intermediate seismic isolation system much suppresses the seismic responses of the dome and the new device can exert their excellent performance irrespective of a spatial variation of earthquake input motions.Kato, S.; Oya, T.; Nakazawa, S.; Kim, Y. (2009). Efficiency of a new steel hysteretic device for an intermediate seismic isolation system applied to reticular domes. Editorial Universitat Politècnica de València. http://hdl.handle.net/10251/652

Genetic analysis of TP53 in childhood myelodysplastic syndrome and juvenile myelomonocytic leukemia

信州大学博士（医学）・学位論文・平成23年3月31日授与（甲第886号)・齋藤章治ArticleLEUKEMIA RESEARCH. 35(12):1578-1584 (2011)journal articl

Parietal Dysgraphia: Characterization of Abnormal Writing Stroke Sequences, Character Formation and Character Recall

Objective: To characterize various dysgraphic symptoms in parietal agraphia

Prototype Analog Front-end for Negative-ion Gas and Dual-phase Liquid-Ar TPCs

We report on the recent development of a versatile analog front-end compatible with a negative-ion $\mu$-TPC for a directional dark matter search as well as a dual-phase, next-generation $\mathcal{O}$(10~kt) liquid argon TPC to study neutrino oscillations, nucleon decay, and astrophysical neutrinos. Although the operating conditions for negative-ion and liquid argon TPCs are quite different (room temperature \textit{vs.} $\sim$88~K operation, respectively), the readout electronics requirements are similar. Both require a wide-dynamic range up to 1600 fC, and less than 2000--5000 e$^-$ noise for a typical signal of 80 fC with a detector capacitance of $C_{\rm det} \approx 300$~pF. In order to fulfill such challenging requirements, a prototype ASIC was newly designed using 180-nm CMOS technology. Here, we report on the performance of this ASIC, including measurements of shaping time, dynamic range, and equivalent noise charge (ENC). We also demonstrate the first operation of this ASIC on a low-pressure negative-ion $\mu$-TPC.Comment: accepted by JINS

In vitro expansion of CD34+CD38- cells under stimulation with hematopoietic growth factors on AGM-S3 cells in juvenile myelomonocytic leukemia

advance online publication, August 8, 2014 [Epub ahead of print]ArticleLEUKEMIA. 29(3):606-614 (2015)journal articl