scholarly journals PROTECTING BAMBOO COLUMN FROM HUMIDITY WITH POROUS PEDESTAL FOUNDATION

2020 ◽  
Vol 46 (2) ◽  
pp. 87-92
Author(s):  
Eugenius Pradipto ◽  
Syam Rachma Marcillia ◽  
Nabila Afif ◽  
Swari Dewanti Hamastuti ◽  
Natasha Nurul Annisa
Keyword(s):  
Rice Field ◽  
Complex Structures ◽  
Building Structure ◽  
Housing Project ◽  
Visual Examination ◽  
Central Java ◽  
Foundation Model ◽  
Long Time ◽  
Post Disaster

Bamboo has been used for a long time as a material for simple to complex structures. Many advantages of bamboo as a building material makes it suitable for buildings in disaster-prone areas. Bamboo is however prone to humidity, which could cause fungi and moss to emerge and endanger the building structure. Pedestal foundation made of concrete or stone is often used to reduce this risk as for its action as a barrier of direct contact between soil and bamboo. Nevertheless, water from damp soil or rainwater can still penetrate the foundation by capillary transmission through the foundation’s pores. This research proposed a hollow pedestal foundation model with larger pores and compared its ability to reduce moisture on bamboo columns to an ordinary pedestal foundation. The case study is a temporary post-disaster housing project of 13 houses in Muntilan, Central Java, Indonesia, which was built on an active rice field. Visual examination showed that after 5 years of occupancy, bamboo houses built on hollow pedestal foundations still firmly stood without apparent attacks of fungi or overgrowing mold, whereas the moisture measurement showed that the usage of hollow pedestal foundation could reduce the humidity level in the bamboo column almost twice as fast compared to solid pedestal foundation.

Failure Analysis of Steel Superheater Tube Fractured in a Boiler of a Power Plant

2011 ◽  
Vol 462-463 ◽  
pp. 467-471
Author(s):  
Zainul Huda
Keyword(s):  
Power Plant ◽  
Steam Temperature ◽  
Hardness Testing ◽  
Visual Examination ◽  
Creep Failure ◽  
Electron Fractography ◽  
Superheater Tube ◽  
Micro Cracks ◽  
Long Time

This paper presents a case study of ASME SA213 type-T22 alloy steel superheater tube that failed in a boiler of a power plant. The failed superheater tube was investigated by visual examination, metallography, optical microscopy, electron fractography, and hardness testing. Microscopic examinations revealed inclusion, pre-existing micro-cracks and cementite precipitates at the grain boundaries in the microstructure; which were thought to be one of the major causes of failure of the superheater tube. Another major cause failure of boiler type T-22 was found to be creep failure because the boiler had been under use for a long time (36573 hours) at high steam temperature of around 420 °C with 130 bar pressure. Finally, recommendations have been suggested to improve the material characteristics and properties of the superheater tube for application in boiler of the power plant.

scholarly journals The Linkage of Business Community (Case Study of Rattan Industries in the Village of Trangsan, Gatak, Sukoharjo)

2014 ◽  
Vol 13 (2) ◽  
Author(s):  
Priyono Priyono ◽  
Dilahur Dilahur ◽  
Choirul Amin ◽  
Isti’ana Maftuchah ◽  
Dina Syafrianingsih
Keyword(s):  
Labour Force ◽  
Business Community ◽  
Industrial Community ◽  
Central Java ◽  
Long Time ◽  
Community Concept ◽  
Relationship Of ◽  
The Village ◽  
Industry Community

Indonesian industry is likely to snap because it relies on the monopolitic conglomerate’s industry so that it cause the inter relationship between big and smaller units of industry to become weak. The weakness of the industrial relationship is caused by the units independetly. This is different from the industry which is based on community concept emphasizing a main priority to close inter relationship between the units. This research was arried out in Trangsan, Gatak, Sukoharjo, Central Java. Where there is a industrial community which has been a close inter relationship since long time ago. The goal of this research is to know the type and the nature of unit inter relationship in rattan industrial community in Trangsan, and know the strategy how it faced a nationally economical crisis.This research used a survei method. The number of the population was 110 entrepreneurs from Trangsan. The sample was obtained with stratied into three categories, based on number of labour force. Every category was taken 20% as sample based on homogeneity sample, ana the respondent was examined with random sampling. The collected data were presented in frequency and cross table. The analysis of qualitative data used logical rationale, deductive – inductive, analogy and comparison, while the analysis of quantitative data used the analysis of frequency and cross table. The use of these two analysis was the result of the research.These are the result of the research: 1) a inter relationship among small – scalled businesses; 2) there is a weak inter relationship between small and medium scaled industries; 3) the business inter relationship of rattan industries is subcontract in which a part of the big scaled industry’s job is reponsible for the small saled one; 4) the form of the business inter relationship is cooperative; 5) the main strategy of rattan industry community to face nationally economical orisis strengthens their business inter relationship.

Self-Extensional Space in Relocated Housing After 2004 Indian Ocean Tsunami: Case Study of Namkem Community, PhangNga, Thailand

2018 ◽  
Vol 13 (1) ◽  
pp. 168-176 ◽  
Author(s):  
Titaya Sararit ◽  
Keyword(s):  
Indian Ocean ◽  
Negative Feedback ◽  
Indian Ocean Tsunami ◽  
Positive Development ◽  
Long Time ◽  
The Indian Ocean ◽  
Post Disaster ◽  
Positive Factor

This study focuses on some houses in Phang Nga Province in Thailand that were permanently relocated after the Indian Ocean tsunami in 2004. It aims to analyze extensions and improvements by residents who have lived in the houses for a long time. Most previous research has painted spatial extensions in a bad light because of the negative feedback from residents regarding post-disaster housing; this could mean that residents were less than satisfied with such houses in comparison to their previous ones with respect to construction, function, or size. Observing and interviewing residents allowed me to infer that spatial extensions can also represent the positive development of long-term recovery projects, as they increase the satisfaction of residents who, more than 10 years after the tsunami, have changed their lifestyles, family sizes, and jobs. It also demonstrates why residents are more satisfied with house types that allow them to carry out the required space adaptions or extensions when they have an increase in their income. In this study, it was observed that extensional space could also be a positive factor revealing the developments in residents’ lives as they showed their intent to live permanently in this type of housing even after the disaster.

THE CHANGING OF SANTRI’s PREFERENCE TOWARDS STUDIES AND PROFESSIONS: A Case Study at Pondok Pesantren Alhikmah 2 Brebes, Central Java

Al-Qalam ◽  
2017 ◽  
Vol 23 (2) ◽  
Author(s):  
Hayyadin Ode
Keyword(s):  
Subject Matter ◽  
Central Java ◽  
Religious Subject

<p>This research aimed to figure out the santri’s preference toward studies and professions in which conduct study at pesantren. Common perceived and stated also at Government Ordinancenumber 55, 2007, that pesantren purposes was to reproduce Islamic scholar (ulama). However, through this study, it proved that not all santri wanted to be ulama, most of them wanted to be a scientist. This study was a case study, conducted in 2015 at Pesantren Alhikmah2 Brebes. Data collected using questionnaire, interview, and document. Those all derived from santris, Kyais, and teachers (asatidz). The research concluded as showed from questionnaire that santri’s  preferences toward study has gotten  changing to general subject matters instead of religious subject matters; and the santri’s professions and jobspreference has gotten changing to the jobs and professions that based on general subject matter, instead of choose to be ulama (Islamic scholar) most of santri wanted to be scientists, or researchers, or doctors as well as athlete.</p>

scholarly journals Towards a Model for Integrating Informal and Formal Learning for Children in Refugee Camps: The Example of the Lesbos School for Peace

2021 ◽  
Vol 10 (3) ◽  
pp. 111
Author(s):  
Ephrat Huss ◽  
Smadar Ben Asher ◽  
Tsvia Walden ◽  
Eitan Shahar
Keyword(s):  
Lived Experience ◽  
Single Case ◽  
Refugee Children ◽  
Refugee Camps ◽  
Arts Based Research ◽  
Whole School ◽  
School Based ◽  
Research Interviews ◽  
Post Disaster

The aim of this paper is to describe a unique, bottom-up model for building a school based on humanistic intercultural values in a post-disaster/refugee area. We think that this model will be of use in similar contexts. This single-case study can teach us about the needs of refugee children, as well as provide strategies to reach these needs with limited resources in additional similar contexts. Additionally, this paper will outline a qualitative arts-based methodology to understand and to evaluate refugee children’s lived experience of in-detention camp schools. Our field site is an afternoon school for refugee children operated and maintained by volunteers and refugee teachers. The methodology is a participatory case study using arts-based research, interviews, and observation of a school built for refugee camp children in Lesbos. Participants in this study included the whole school, from children to teachers, to volunteers and managers. The research design was used to inform the school itself, and to outline the key components found to be meaningful in making the school a positive experience. These components could be emulated by similar educational projects and used to evaluate them on an ongoing basis.

scholarly journals Female Candidates, Islamic Women’s Organisations, and Clientelism in the 2019 Indonesian Elections

2021 ◽  
Vol 40 (1) ◽  
pp. 73-92
Author(s):  
Muhammad Mahsun ◽  
Misbah Zulfa Elizabeth ◽  
Solkhah Mufrikhah
Keyword(s):  
Structural Barriers ◽  
Women Candidates ◽  
Electoral Success ◽  
Female Candidates ◽  
Central Java ◽  
Grassroots Support ◽  
Nahdlatul Ulama ◽  
And Gender ◽  
Women's Networks

This article analyses the factors leading to the success of women candidates in the 2019 elections in Central Java. Recent scholarship on women’s representation in Indonesia has highlighted the role that dynastic ties and relationships with local political elites play in getting women elected in an environment increasingly dominated by money politics and clientelism. Our case study of women candidates in Central Java belonging to the elite of the Nahdlatul Ulama (NU)-affiliated women’s religious organisations Muslimat and Fatayat shows that strong women candidates with grassroots support can nonetheless win office. Using the concepts of social capital and gender issue ownership, and clientelism, we argue that women candidates can gain a strategic advantage when they “run as women.” By harnessing women’s networks and focusing on gender issues to target women voters, they are able to overcome cultural, institutional, and structural barriers to achieve electoral success even though they lack resources and political connections.

scholarly journals Analysis of Dangerous Sea States in the Northwestern Mediterranean Area

2021 ◽  
Vol 9 (4) ◽  
pp. 422
Author(s):  
Alessio Innocenti ◽  
Miguel Onorato ◽  
Carlo Brandini
Keyword(s):  
Extreme Events ◽  
Mediterranean Area ◽  
Rayleigh Distribution ◽  
Surface Elevation ◽  
Wave Steepness ◽  
Sea Waves ◽  
Operational Forecasts ◽  
Long Time ◽  
Simulated Field

Extreme sea waves, although rare, can be notably dangerous when associated with energetic sea states and can generate risks for the navigation. In the last few years, they have been the object of extensive research from the scientific community that helped with understanding the main physical aspects; however, the estimate of extreme waves probability in operational forecasts is still debated. In this study, we analyzed a number of sea-states that occurred in a precise area of the Mediterranean sea, near the location of a reported accident, with the objective of relating the probability of extreme events with different sea state conditions. For this purpose, we performed phase-resolving simulations of wave spectra obtained from a WaveWatch III hindcast, using a Higher Order Spectral Method. We produced statistics of the sea-surface elevation field, calculating crest distributions and the probability of extreme events from the analysis of a long time-series of the surface elevation. We found a good matching between the distributions of the numerically simulated field and theory, namely Tayfun second- and third- order ones, in contrast with a significant underestimate given by the Rayleigh distribution. We then related spectral quantities like angular spreading and wave steepness to the probability of occurrence of extreme events finding an enhanced probability for high mean steepness seas and narrow spectra, in accordance with literature results, finding also that the case study of the reported accident was not amongst the most dangerous. Finally, we related the skewness and kurtosis of the surface elevation to the wave steepness to explain the discrepancy between theoretical and numerical distributions.

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