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Influences of Post Weld Heat Treatment on Fatigue Crack Growth Behavior of Transverse TIG Welded Al6013-T4 Aluminum Alloy Joint (횡방향 TIG 용접된 Al6013-T4알루미늄 합금 용접부의 피로균열전파거동에 미치는 PWHT의 영향)

  • Haryadi, Gunawan Dwi;Kim, Seon Jin
    • Journal of Power System Engineering
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    • v.16 no.4
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    • pp.66-73
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    • 2012
  • 본 연구는 횡방향 TIG 용접된 Al6013-T4 알루미늄 합금 용접부의 피로균열전파거동에 미치는 용접후열처리(PWHT)의 영향을 조사하는 것이 주목적이다. 기초적으로 인장시험, 경도 및 미세조직이 조사되었으며, 피로균열전파거동을 고찰하기 위한 피로 시험은 모두 중앙균열인장(CCT) 시험편에 대하여 수행되었다. T82열처리에 있어서 시효시간은 피로균열전파율, 인장강도 및 경도에 대단히 민감함을 나타내었으며, 모재와 열영향부재의 경우가 용접재보다 기계적 성질이 우수하였다. 횡방향 TIG 용접한 Al6013-T4 시험재의 용접후열처리 조건에 따라서 피로균열전파 저항에는 차이가 나타났으며, 본 실험의 조건하에서 24시간 인공시효 PWHT-82 시험편이 피로균열전파 저항이 가장 우수한 결과를 나타내었다.

Do Real Interest Rate, Gross Domestic Savings and Net Exports Matter in Economic Growth? Evidence from Indonesia

  • SUJIANTO, Agus Eko;PANTAS, Pribawa E.;MASHUDI, Mashudi;PAMBUDI, Dwi Santosa;NARMADITYA, Bagus Shandy
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.11
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    • pp.127-135
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    • 2020
  • This study aims to measure the effects of real interest rate (RIR), gross domestic savings (GDS), and net exports (EN) shocks on Indonesia's economic growth (EG). The focus on Indonesia is unique due to the abundant resources available in the nation, but they are unsuccessful in boosting economic growth. This study applied a quantitative method to comprehensively analyze the correlation between variables by employing Vector Autoregression Model (VAR) combined with Vector Error Correction Model (VECM). Various procedures are preformed: Augmented Dickey-Fuller test (ADF), Optimum Lag Test, Johansen Cointegration Test, Granger Causality Test, as well as Impulse Response Function (IRF) and Error Variance Decomposition Analysis (FEVD). The data were collected from the World Bank and the Asian Development Bank from 1986 to 2017. The findings of the study indicated that economic growth responded positively to real interest rate shocks, which implies that when the real interest rate experiences a shock (increase), the economy will be inclined to growth. While, economic growth responded negatively to gross domestic savings and net export shocks. Policymakers are expected to consider several matters, particularly the economic conditions at the time of formulating policy, so that the prediction effectiveness of a policy can be appropriately assessed.

Mediating Roles of Job Satisfaction toward the Organizational Commitment of Employees in the Public Sector

  • INGSIH, Kusni;PRAYITNO, Agus;WALUYO, Dwi Eko;SUHANA, Suhana
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.10
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    • pp.999-1006
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    • 2020
  • This study provides an understanding of the role of job satisfaction as a mediator of compensation and workplace environments for the organizational commitment of employees in the public sector. This study used a structural model using path analysis. The population and sample in this study were all employees at the Population and Civil Registry Office of one of the districts in Indonesia. The sampling technique used was total sampling, due to the considerably smaller amount of the sample size. This study found that compensation and workplace environment could explain job satisfaction variables with a 93.8% confidence level and simultaneously compensation, workplace environment, and job satisfaction that could explain organizational commitment with a variable of 97.4%. This findings also shows that the manifest bonus variable on the latent compensation variable is one of the main indicators that needs to improve to increase job satisfaction and organizational commitment. One of the important things which needs to be done is to increase compensation. The first thing which needs to be done is to increase the bonus. Furthermore, to improve the quality of the workplace environment, facilities, and infrastructure such as stable internet connections, computer specifications are the important criteria that must be met.

Nexus between Production Input and Price Commodity: An Integration Analysis of Rice Barns in East Java of Indonesia

  • WULANDARI, Dwi;NARMADITYA, Bagus Shandy;PRAYITNO, Putra Hilmi;ISHAK, Suryati;SAHID, Sheerad;QODRI, Lutfi Asnan
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.10
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    • pp.451-459
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    • 2020
  • This study aims to examine the causality between production input and the price of rice in East Java, Indonesia. This study applied a quantitative method to understand in a comprehensive way the correlation between variables. The data used for this study were collected from several sources, including East Java Agriculture Office, Siskaperbapo.com, and Statistics Indonesia (BPS) of East Java. This research was carried out over five years, starting from 2014 to 2018. Furthermore, the data were analyzed using the Vector Error Correction Model (VECM) by employing E-Views (version 7). The findings of this study indicated that, in the long run, the population, rice production, and changes in people's income have a positive effect on price stability, but are inversely proportional if seen in the short term. In comparison, in the long run, farmer exchange rates variable has a negative impact on price stability, and inversely proportional in the short term, which has a positive effect. There are different implications when the people's income increases and the rice price declines; these have great potential to alleviate poverty in East Java, Indonesia. This is due to the fact that the price stability also concerns the welfare of the community.

Nexus between Inflation and Unemployment: Evidence from Indonesia

  • WULANDARI, Dwi;UTOMO, Sugeng Hadi;NARMADITYA, Bagus Shandy;KAMALUDIN, Mahirah
    • The Journal of Asian Finance, Economics and Business
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    • v.6 no.2
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    • pp.269-275
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    • 2019
  • This study intended to examine the relationship between inflation and unemployment rate in Indonesia during 1987 to 2018 period. The study applied a quantitative method using Vector Error Correction Model (VECM) in order to comprehensively understand the causality between inflation and unemployment rates. The data were collected from various main sources including the World Bank, Central Bank of Indonesia, and Central Bureau of Statistics (BPS). The findings showed that inflation has a one-way relationship toward unemployment in Indonesia and it occurs at the third lag. Impulse Response Function (IRF), shows that the inflation rate are fluctuating in response to the shock of unemployment. The unemployment rate responses to shocks from inflation initially increased until it is eventually diminished. It shows that the shocks caused by the impact of inflation were only in the short term. Further, inflation in the three previous lags will have consequences for the unemployment rate in the year. Lastly, both in the long run and short run, unemployment did not affect inflation rates. These findings suggest that high inflation in Indonesia is determined the rising price of basic commodities and fuel. In addition, most companies in Indonesia applying capital intensive so that employment growth in Indonesia is small.

Flexural Properties of Heat-Treatment Samama (Anthocephalus macrophyllus) Wood Impregnated by Boron and Methyl Metacrylate

  • CAHYONO, Tekat Dwi;DARMAWAN, Wayan;PRIADI, Trisna;ISWANTO, Apri Heri
    • Journal of the Korean Wood Science and Technology
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    • v.48 no.1
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    • pp.76-85
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    • 2020
  • This study was conducted to analyze the application of boron compounds, methyl methacrylate (MMA), and heat treatment (HT) on changes in the density, moisture content, and flexural properties of samama (Anthocephalus macrophyllus) wood. Samama wood was impregnated with borax (BX) and boric acid (BA) using a pressure method at 5 atm for 4 h. Afterwards, the wood was impregnated with MMA at the same pressure and duration. Finally, the samama wood was given HT at 90 ℃ and 180 ℃. The results indicate that there was a weight gain of 93.4% in the wood impregnated using BA and MMA monomer and HT at 90 ℃. Consequently, the wood's density increased by 82.3%. Increased MOE and MOR percentages of 32.2% and 29.4%, respectively, were also found. HT at 180 ℃ degraded the wood components and MMA, and consequently, the density, MOE, and MOR also decreased. The wood impregnated by BX, BA, and MMA, and subjected to HT also had decreased moisture content (MC). This research recommends that the application of boron (BX, BA) should be combined with an MMA monomer and HT at 90 ℃ as an alternative method to improve samama wood quality. If darker color is preferable, HT should be conducted at 180 ℃.

The Effect of Industrial Agglomeration on Economic Growth in East Java, Indonesia

  • HARDJOKO, Arief Tri;SANTOSO, Dwi Budi;SUMAN, Agus;SAKTI, Rachmad Kresna
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.10
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    • pp.249-257
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    • 2021
  • Industrial agglomeration policy is a strategy that is expected to accelerate economic growth to transform an impoverished region into a prosperous one. However, industrial agglomeration also has the potential to exacerbate development inequality due to the concentration of economic development activities in certain areas. Therefore, this study aims to investigate what strategies are best to minimize the adverse effects of industrial agglomeration. This study uses econometric analysis with panel data covering 38 districts/cities in East Java during the 2011-2019 period. The results showed that the combination of industrial agglomeration policies coupled with accelerated sectoral growth, hard infrastructure development, and soft infrastructure provided the best policy outcome, improving regional inequality and accelerating economic growth in East Java. Based on the analysis, we find that East Java's economic growth characteristics are convergent but relatively long. Therefore, the East Java economic development policy during 2010-2019 should be reviewed due to the relatively long convergence period. Furthermore, this study also found that industrial agglomeration slows down the convergence and economic growth of East Java. In the future, the deployment of Industrial Development Centers (PPI) outside the existing eight districts/cities is needed to accelerate the spread of economic activity in East Java.

Barriers to Access Formal Financial Services: An Empirical Study from Indonesia

  • JAYANTI, Ari Dwi;AGUSTI, Kemala Sari;SETIYAWATI, Yuli
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.11
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    • pp.97-106
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    • 2021
  • The condition of financial services in Indonesia is unique, based on various characteristics, behaviors, and preferences. Therefore, the study of finance and banking is interesting to study as a recommendation for government policies. This paper aims to analyze the barriers to accessing formal financial services in Indonesia and why informal financial services are preferred. This paper presents a case study of financial inclusion in selected provinces in Indonesia using the SOFIA dataset from the Ministry of National Development Planning. Overall, this data consists of 20,000 individuals from 4 provinces and 93 regions representing the population in eastern Indonesia. The analysis was carried out by processing individual-level cross-sectional data surveyed in 2017 using the probit binary logistic method. The results identify the individual barriers in accessing formal financial services, including account ownership, saving, and credit activities in the formal financial institutions, and amplify the image by analyzing what determinants affect people to choose informal institutions. We found that some individual characteristics such as age, gender, education, income, employment status, residence, and access to technology significantly affect the barrier to formal financial services in East Indonesia.

Determinants of Corporate Social Responsibility Disclosure: A Case Study of Banking Industry in Indonesia

  • ORBANINGSIH, Dwi;SAWITRI, Dyah;SUHARSONO, Riyanto Setiawan
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.5
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    • pp.91-97
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    • 2021
  • The disclosure of corporate social responsibility (CSR) is an important part of the company. CSR disclosure (CSRD) is interesting to study because CSRD in the annual reports is very important in terms of attaining company objectives to satisfy the interests of stakeholders; protect employee's interests; clarify the extent of contribution of the company in both CSR activities and CSRD; assist appropriate investment decisions. This study examines the structure of share ownership and company size as determinants of CSRD in the banking industry. We use a quantitative approach in this approach, in which researchers start with hypotheses and then collect data that can be used to determine whether empirical evidence to support that hypothesis exists. The sampling technique used is purposive sampling so that the research sample was 14 banking companies that are listed on the Indonesian Capital Market Directory from 2015-2017. Data analysis techniques using multiple linear regression determined the relationship between research variables. The results of the study state that managerial ownership, institutional ownership, foreign ownership, and company size affect CSRD. This demonstrates that the role of managerial ownership, institutional ownership, and foreign ownership have an impact on CSRD and are deemed necessary for the corporate environment. Besides, company size determines the activities of CSRD so that it can increase public confidence in the company's operational activities.

Fundamental Properties of Composite Board Made with Oriented Strand Board and Three Different Species of Veneer

  • Yanti, Hikma;Massijaya, Muh Yusram;Cahyono, Tekat Dwi;Novriyanti, Eka;Iswanto, Apri Heri
    • Journal of the Korean Wood Science and Technology
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    • v.47 no.2
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    • pp.239-248
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    • 2019
  • This research presents an improvement of the physical and mechanical properties of composite board (com-ply) made of Oriented Strand Board (OSB) coated with wood veneer of Pine (Pinus merkusii), Avocado (Persea Americana) and Mahogany (Swietenia mahogany). 1.5 mm thick veneers of those three wood types were adhered to the surface of OSB using two adhesive types: epoxy and isocyanate. The adhesive with the glue spread of $250g\;m^{-2}$ applied using single glue line was spread and then cold pressed with the pressure of $15kg\;cm^{-2}$ for 3 hours. The research result showed an improving dimension stability of com-ply, but not found on all parameters of physical property test. The moisture content seemed to be influenced by the com-ply type, yet not related to its thickness swelling, water absorption and linear expansion. The exception took place in the parallel linear expansion when immersed for 2 hours. The highest to the lowest increases of MOE and MOR were consecutively found on OSB coated with wood veneer of Pine, Mahogany and Avocado. However, the increases were statistically insignificant. The highest increasing screw hold power was found at the com-ply type AE (avocado veneer and epoxy adhesive) that was by 28%.