Two-phase flow boiling heat transfer and pressure drop of NH₃in horizontal smooth minichannels

Maulana Rifaldi Chonnam National Univ. 2011 국내석사

How does the national park management deliver their services? The perspective of service marketing focused on gunung gede pangrango national park, Indonesia

Maulana, Firman 서울시립대학교 국제도시과학대학원 2018 국내석사

인도네시아에 설립된 가장 오래된 국립공원 중 하나인 구눙 게대 빵랑오 국립공원(GGPNP)은 관광 개발의 기초로 생태관광을 선택했다. 생태관광과 관련된 모든 혜택에 관계 없이 미래에 최적의 이익을 얻으려면 여전히 해결해야 할 과제가 있다. 정부기관으로서 GGPNP는 방문객에게 서비스를 제공하는 관광 활동을 지원하는 단순한 관리 이상의 또 다른 역할을 한다. 최근의 사실은 국립공원에 방문하는 관광객 수가 여전히 적다는 것을 보여주며 그 이유 중 하나는 국립공원에서 마케팅에 대한 관심이 낮기 때문이다. 국립공원은 또한 성과 중 하나인 방문 관광객 수에 대한 목표를 달성해야 하지만 GGPNP의 경영진은 서비스 마케팅을 시행하여 국립공원을 홍보하는 방법에 주목하기 시작해야 한다. 이러한 이유로 본 연구는 서비스 마케팅 관점에서 GGPNP가 서비스를 제공하는 방법을 조사하기 위해 실시되었다. 또한 이 논문은 생태관광 원리를 강조하는 경영진 측면과 인지된 서비스 성과 차원을 강조하는 방문객 관점에서 서비스 마케팅의 3가지 요소(인력, 물리적 증거, 프로세스 관리)를 탐구한다. 조사 결과에 따르면 GGPNP의 서비스 마케팅 구현은 전반적으로 중간 수준이다. 이는 GGPNP가 이미 표준 서비스 마케팅을 수행하지만 마케팅 가치를 높이기 위해 해결하고 개선해야 할 몇 가지 사항이 있다는 것을 의미한다. 인적 요소의 경우 GGPNP는 방문객에게 더 나은 서비스를 제공하기 위해 더 많은 인력을 충원하고 더 많은 교육을 제공해야 한다. 물리적 증거 요소의 경우 방문객은 GGPNP가 국립공원 지역에 머무는 동안 방문객에게 더 많은 지식과 편의를 제공하기 위해 국립공원 지역에 정보 표지판과 위생 시설을 개선하거나 추가해야 한다고 생각한다. 마지막으로, 프로세스 관리 요소에서 GGPNP는 더 많은 절차를 추가하고 고객 평가, 방문 우선순위 시민에 대한 대우(노인, 임산부, 장애인, 어린이), 방문객에게 피드백을 제공하는 방식에 대해 구체적인 사항을 추가해야 한다. GGPNP의 경영진에게 이 결과가 의미하는 바는 특히 인도네시아에서 국립공원의 서비스 마케팅에 대해 논의하는 이전 연구가 없었기 때문에 공식적인 계획 전략을 위한 마케팅 참조자료와 디딤돌을 제공하는 것이다. 또한 훌륭한 서비스 마케팅을 시행함으로써 장기적으로 국립공원을 방문하여 보존 메시지를 받고 환경에 대한 소속감을 높일 수 있는 사람들이 더 많아질 것이다. Gunung Gede Pangrango National Park (GGPNP) one of the oldest national parks established in Indonesia has chosen ecotourism as the basis of their strategy in developing tourism. Regardless of all of the benefits that come with ecotourism, there are challenges that are still need to be addressed to gain optimum benefit in the future. As a government agency, GGPNP has another role than just mere conservation which is supporting tourism activities which mainly about delivering a service to its visitors. The recent data shows that the number of tourist arrival to the national park is still low, and one of the reasons is the low interest of marketing for a national park. While the national park also needs to achieve the target for tourist arrival as one of their performance, the management of GGPNP needs to start their attention on how to market the national park through the implementation of service marketing. Due to these reasons, this research was conducted to examine how the GGPNP delivers their services from the perspective of services marketing. In particularly, this thesis explores the three elements of services marketing (personnel, physical evidence, and process management) from the perspective of management which emphasizes ecotourism principles and the perspective of visitor which emphasizes on perceived service performance dimension. The results of this survey show that as overall the implementation of service marketing in GGPNP is at a moderate level. This means that GGPNP already perform standard service marketing but there are several things that need to be addressed and improved to increase their marketing value. From the personnel element, the GGPNP need to consider adding more personnel and provide them with more training in order to deliver better services to the visitor. For the physical evidence element, the result also shows that the visitor thinks that GGPNP needs to improve or add more information signage and sanitary facilities in the national park area to give more knowledge and comfortability toward visitor during their stay in the area of national park. Lastly, from the process management element shown that GGPNP need to add more procedure and put more specific details on customer evaluation, treatment for priority citizen (elderly, pregnant woman, disabled person, and children) that come to visit, and how they provide their feedback to the visitor. This research is expected to serve as a stepping stone and reference on marketing and planning strategies of GGPNP since there was no previous research that discusses service marketing in the national park especially in Indonesia. Furthermore, by implementing good services marketing it is expected that for long-term outcome there will be more people to visit a national park to receive the message of conservation and hence increase their sense of belonging toward the environment.

21세기 뉴미디어 환경을 위한 이상한 나라의 앨리스의 시각적 재해석 연구 : A thesis on Visual Reinterpretation of Alice's Adventures in Wonderland for 21st Century new media environment

Beny Maulana 우송대학교 2008 국내석사

Valuation of Residential Mortgage-Backed Securities with a Two -Factor Gaussian Model and The Monte Carlo Method: Case Study of The Indonesian Securitization Market

RIZKI MAULANA 아주대학교 대학원 2019 국내석사

The increasing demand for private housing is inseparable from the increasing opportunities to invest in Mortgage-Backed Securities (MBS), especially Residential Mortgage-Backed Securities (RMBS) for investors. Indonesia as the 4th largest population in the world has the prospect for this RMBS market. However, since the global financial crisis happened between 2007 and 2010, the investors have been very careful in investing in RMBS. Valuation is believed to be one of the key efforts which can minimize the problem that might occur in the future. In this thesis, I used Indonesia market data to conduct a valuation of RMBS with Two-Addictive-Factor Gaussian (G2++) model and Monte Carlo method. Results from the MATLAB simulations highlight that the determination of boundary for calibration parameters of the G2++ model is very important. By giving a boundary 0 ~ 0.5 for the estimate parameters (except parameter rho) we can get optimal and consistent parameter calibration results. Further, the results of parameter sensitivity test show that out of the five calibrated parameters (a, b, sigma, eta, rho), the price of RMBS is particularly sensitive to change in eta parameter. Beside the eta parameter, the RMBS price itself is also found to be sensitive to the change in conditional prepayment parameter.

(The)Economic Determinants of Inbound Tourism Demand A Case of Indonesia, 1997-2007

Muhammad Iqbal Maulana Graduate school of international studies, Korea un 2009 국내석사

International tourism is one of the most important sectors in the world economy. It has direct economic impact to attract foreign currencies to a tourism destination country, creates job opportunities and increases per capita income in the tourism destination area. Because of those economic benefits, international tourism has become an alternative engine of economic growth for developing countries, including Indonesia. Unfortunately, the number of tourist arrival to Indonesia, that reflects inbound tourism demand, grew slowly in 1997-2007. Domestic crisis because of several incidents such as terrorism bombing attack, natural disaster and political unrest are the main reason why tourists reluctant to go to Indonesia. However, it can be said as the only reason that caused the stagnation of tourist arrival to Indonesia. The statistical data of annual tourist arrival shows that the movements of tourist arrival trend are not exactly follow domestic incidents that occurred every year 1997-2006. Besides, the tourist arrival to Indonesia from some countries show increasing trend over years. This research is trying to find out the other factors that affect tourism demand in Indonesia. Based on previous research on tourism study, economic factors are the important determinants that affect tourism demand. Thus, it is hypothesized that economic determinant affect tourism demand in Indonesia in 1997-2007. This research utilizes panel regression model to find out the relationship of the economic determinant ands tourism demand to Indonesia. The objects of research are tourist arrivals from ten tourism origin countries to Indonesia in 1997-2007. The empirical result of regression analysis shows that income level in tourist origin country and substitute prices in competitor countries affect tourism demand to Indonesia. Meanwhile, price level in Indonesia relative to price level in tourist origin countries does not affect tourism demand. These empirical results can be used to formulate some policies to improve tourism industry in Indonesia.

Assessment of Biological Activities of Syzygium polyanthum and Murraya paniculata Leaves Extracts

Taufik, Iqbal Maulana Kangwon National University 2021 국내석사

Indonesia has been widely known as one of the largest countries that produce various medicinal plants. Unfortunately, the number of researches concerned with the utility, efficacy, and safety is still insufficient. Therefore, the current study aimed to investigate the potential medicinal plants through in vitro assessment of biological activities of Syzygium polyanthum and Murraya paniculata leaves extracts conducted in different solvents, including distilled water and various concentrations of ethanol (EtOH), mainly 30, 70, and 95% of EtOH. The biological activities were measured, including phytochemicals such as analysis of total phenolic and flavonoid content where the gallic acid and quercetin were used as a standard, respectively. Moreover, the antioxidative radical scavenging activity was entirely carried out through DPPH, ABTS, and FRAP (Ferric Reducing Antioxidant Power) assay. Concerning the potential activity as an enzyme inhibitor, the α-glucosidase and pancreatic lipase enzyme inhibition activity were also conducted. Besides, a kinetic study of the greatest IC50 in α- glucosidase inhibition was also analyzed. As a result, following the large to the small extraction yield of Syzygium polyanthum was 70% EtOH (S70) > 30% EtOH (S30) > DW (SD) > 95% EtOH (S95), whereas Murraya paniculata was 30% EtOH (M30) > DW (MD) > 70% EtOH (M70) > 95% EtOH (M95). The total phenolic and flavonoid contents revealed that S30 had the highest concentration (214.33±5.00 µgGAE) and (22.92±0.39 µgQE), respectively. Moreover, the antioxidant activity was entirely determined, resulted in the S30 (50 µg/mL) showed the more significant radical scavenging of DPPH (52.23±2.36%) than other extracts, and it was comparable to 60 µM of ascorbic acid (49.32±1.24%). Also, the S30 (25 µg/mL) demonstrated an excellent result on ABTS radical scavenging activity (91.33±0.21%) as well as FRAP assay at 50 µg/mL (185.5±2.5 µM ascorbic acid equivalent antioxidant capacity) among the samples. The S30 was the most effective α-glucosidase inhibitor (IC50 0.412±0.002 µg/mL) among the samples and compared to acarbose (IC50 514.3± 5.97 µg/mL). The mode of α-glucosidase inhibition revealed that acarbose proposed competitive inhibition, while the S30 demonstrated uncompetitive inhibition. Further, rat intestinal disaccharidase inhibition percentage on sucrose and maltose of S30 was 75.88±0.12% and 18.92±0.84%, respectively. On the other side, the MD (250 µg/mL) demonstrated the inhibition activity on porcine pancreatic lipase (51.37±3.76%) compared to 10 µg/mL of orlistat (68.72±8.64%). According to these findings, it might be concluded that either Syzygium polyanthum or Murraya paniculata leaves extracts are potentially used as medicinal plants. Specifically, the S30 revealed a tremendous antioxidant activity and inhibition of α-glucosidase, which is prospectively used in preventive free radicals related diseases and diabetes treatment by inhibiting the activity of α-glucosidase. In contrast, the MD is potentially used in obesity treatment as a pancreatic lipase inhibitor. Nevertheless, further research is still needed to examine their biological mechanism and appropriate dosage. 인도네시아는 다양한 약용 식물을 생산하는 가장 큰 국가 중 하나로 널리 알려져 있다. 불행히도 유용성, 효능 및 안전성과 관련된 연구의 수는 아직 충분하지 않다. 따라서 본 연구는 증류수와 다양한 농도의 에탄올(30%, 70% 및 95% EtOH)을 포함한 용매에서 수행 된 Syzygium polyanthum 및 Murraya paniculata 잎 추출물의 생물학적 활성을 in vitro 수준에서 평가하여 잠재적 약용 식물을 조사하는 것을 목표로 하였다. Gallic acid와 quercetin이 각각 표준품으로 사용되는 총 페놀 및 플라보노이드 함량 분석과 같은 식물 화학 물질을 포함한 생리활성을 측정했다. 또한, 항산화 효능으로 라디칼 소거활성은 DPPH, ABTS, FRAP (Ferric Reducing Antioxidant Power) 분석을 통해 수행되었다. 효소 억제제로서의 잠재적인 활성에 관해서는 α-glucosidase 및 췌장 lipase 효소 억제 활성도 수행 하였다. 또한 α-glucosidase 억제에서 가장 큰 IC50값에 대한 enzyme동역학연구도 수행되었다. 그 결과, Syzygium polyanthum의 추출수율은 70% EtOH(S70) > 30% EtOH(S30) > DW(SD) > 95% EtOH(S95)인 반면 Murraya paniculata는 30% EtOH(M30) > DW (MD) > 70% EtOH(M70) > 95% EtOH(M95)으로 나타났다. 총 페놀 및 플라보노이드는 S30이 각각 가장 높은 함량(214.33±5.00 µgGAE) 및 (22.92±0.39 µgQE)를 나타내었다. 더욱이 항산화 활성 측정결과, S30 (50 µg/mL)은 DPPH(52.23±2.36%)가 다른 추출물보다 더 우수한 라디칼 소거활성을 보였으며 60 µM의 ascorbic acid(49.32±1.24%). 또한 S30(25 µg/mL)은 ABTS 라디칼 소거 활성(91.33±0.21%)과 FRAP 분석에서 50 µg/mL(185.5±2.5 µM ascorbic acid equivalent antioxidant capacity)의 우수한 결과를 보여주었다. S30은 샘플 중에서 가장 효과적인 α-glucosidase 억제효능 (IC50 0.412 ± 0.002 µg / mL)을 보였으며 acarbose (IC50 514.3 ± 5.97 µg / mL)와 비교하였다. α- glucosidase 저해방식은 acarbose가 경쟁적 억제를 제안한 반면 S30은 비경쟁적 억제형태를 나타내었다. 또한 S30의 sucrose와 maltose에 대한 랫드 장내 disaccharidase 저해율은 각각 75.88 ± 0.12%와 18.92 ± 0.84%였다. 한편, MD (250 µg/mL)는 10 µg/mL의 orlistat (68.72±8.64 %)에 비해 돼지 췌장 lipase (51.37±3.76%)에 대한 억제 활성을 나타내었다. 이러한 결과들에 따르면, Syzygium polyanthum 또는 Murraya paniculata 잎 추출물이 잠재적으로 약용식물로써 사용된다는 결론을 내릴 수 있다. 구체적으로, S30은 엄청난 α-glucosidase저해활성과 자유라디칼 저해활성을 나타내내어 관련질병의 잠재적 치료효과를 기대할 수 있다. 이와는 다르게, MD는 잠재적으로 비만 치료에 췌장 리파제 억제제로 사용될 수 있다.

Development of immunoassay detection system for Koi herpesvirus using recombinant single chain Fv antibody

Lubis, Andre Ditya Maulana Sungkyunkwan university 2021 국내석사

Koi Herpesvirus (KHV) is a highly contagious virus and causes high mortality to the Koi and common carp fishes, thus affect high loss fishery production around the world. Unfortunately, there is no established method against this viral disease, effectively. We proposed an alternative method against the viral infection by using single chain fragment variable (scFv), the specific region of IgG antibody, which specifically bind the viral particle. The capsid subunit 2 (VP23), a capsid constituent virion protein of the triplex complex in herpesvirus capsid, is selected as target antigen and expressed in yeast surface display platform (after optimizing the codon sequence). Putative KHV-specific scFv candidates are obtained using phage display (Tomlinson J library) in bio panning technique against KHV antigen. After 4th round of panning, there are 4 putative scFv candidate with high affinity ratio value above 2 compare to RSIV antigen as a control, i.e. C5, F8, F6, and E4. The scFv sequences are cloned into pIg20-HisTag expression vector after the sequence is corrected to show complete region of the expected CDR. scFv protein were expressed in E. coli BL21(DE3) pLysE strain at 25oC, 1mM IPTG after reach OD600 = 0.75-0.85, and were purified using protein L resin that has specific binding into kappa light chain fragment. The binding performance of putative scFv is characterized using ELISA method against KHV virion and VHSV virion. The result shows F6 and C5 clones has the higher affinity and specificity to KHV, and it was confirmed by indirect competitive ELISA that F6, C5, and mAb KHV has similar epitope hence confirmation test by sandwich assay was conducted, and it shows F6/C5 combination has the higher affinity. In conclusion, all clones have a promising candidate as to detect the KHV particle. 코이 헤르페스바이러스(KHV)는 전염성이 강한 바이러스로 코이와 일반 붕어에게 높은 폐사율을 초래해 전 세계 고손실 어업 생산에 영향을 미친다. 불행하게도, 이 바이러스성 질병에 효과적으로 대항할 방법이 확립되어 있지 않다. 바이러스 입자를 구체적으로 묶는 IgG 항체의 특정 영역인 단일 체인 파편 변수(scFv)를 활용해 바이러스 감염에 대비한 대안을 제시했다. 헤르페스바이러스캡시드 내 트리플렉스 복합체의 캡시드 성분 처녀성 단백질인 캡시드 서브유닛 2(VP23)는 표적 항원으로 선택되어 효모 표면 표시 플랫폼(코돈 시퀀스 최적화 후)으로 표현된다. KHV별 scFv 후보는 KHV 항원에 대한 바이오 패닝 기법에서 페이징 디스플레이(Tomlinson J 라이브러리)를 사용하여 획득한다. 4차 패닝 후, 대조군으로서의 RSIV 항원, 즉 C5, F8, F6, E4에 비해 친화력이 높은 값이 2 이상인 4개의 putative scFv 후보가 있다. scFv 시퀀스는 예상 CDR의 전체 영역을 표시하도록 시퀀스를 수정한 후 pIg20-HisTag 식 벡터로 복제된다. scFv 단백질은 OD600 = 0.75-0.85에 도달한 후 25oC, 1m IPTG에서 대장균 BL21(DE3)pLysE 변형률로 표현되었고, 카파 라이트 체인 파편에 특정 결합이 있는 protein L 수지를 사용하여 정제되었다. Putative scFv의 결합 성능은 KHV virion 및 VHSV virion에 대한 ELISA 방법을 사용하여 특징지어집니다. 결과는 F6 및 C5 클론이 KHV에 더 높은 친화력과 특수성을 가지며, 간접 경쟁사 ELISA에 의해 F6, C5, mAb KHV 가 유사한 상피성을 가지고 있다는 것을 확인하였고, 샌드위치 분석에 의한 확인 테스트를 실시하였으며, F6/C5 조합은 더 높은 친화력을 가지고 있다는 것을 보여주었다. 결론적으로 모든 클론은 KHV입자를 검출할 잠재력이 있다.

RELATIONSHIP BETWEEN ISO 9000 CERTIFICATION AND INNOVATION PROPENSITY AMONG INDONESIAN SMES

MAULANA, Rizki Harit KDI국제정책대학원대학교 2017 국내석사

A Study on the Current State and Success Factors of Construction Technology Startups

Maulana, Fauzan Reza Stanford University ProQuest Dissertations & These 2023 해외박사(DDOD)

Construction technology startups have struggled to perform as well as their counterparts in other industries, and the reasons behind this discrepancy remain largely unknown. Existing research has focused on general factors influencing success but has overlooked the specific context of construction technology companies. This gap is filled by investigating the construction tech landscape, identifying unique characteristics, and examining the factors that influence their success.Through the CIFE horseshoe method, which emphasizes a holistic understanding of construction projects, and a quantitative-leaning mixed method approach, two datasets were analyzed; one focused on construction technology startups and the other on general technology startups. These datasets were sourced from investment intelligence platforms like Crunchbase and PitchBook. Through exploratory data analysis, including distributions, and confirmatory analysis utilizing the Mann-Whitney U test and logistic regression, this thesis unveils the distinct characteristics of construction startups and identifies the parameters that contribute to their success.The findings highlight that construction technology startups exhibit uniqueness in terms of their founding team composition, fundraising strategies, and exit events. Founding teams typically consist of two-person teams with technical backgrounds, emphasizing agility and collaboration. Funding dynamics reveal shorter durations for early-stage funding and longer durations for late-stage funding. Successful exits are more commonly achieved through mergers and acquisitions. Construction tech startups exhibit unique characteristics, such as larger founding teams and a prevalent optimum exit period between 6-8 years. Factors influencing success include waiting to raise the first funding round, having architecture, engineering, and construction (AEC) experience within the team, and targeting various customer segments. Startups focused on construction management, design/engineering, and data management/analytics show higher success rates. These insights inform strategic decisionmaking and offer opportunities for further research and exploration in the construction technology startup landscape.A notable contribution of this thesis is the in-depth exploration of construction-focused technology companies, delving into unconventional variables such as experience in AEC, as well as customer base analysis. By considering these factors, a more comprehensive understanding of the construction tech landscape is obtained, shedding light on the industry-specific challenges and opportunities.

Design and Implementation the Concept of Crowdsourcing on a Web Portal Crime

Fairuz Iqbal MAULANA Pukyong National University, Interdisciplinary Pro 2016 국내석사

Mutual cooperation is a form of active participation of each individual to engage in value-added or positive to any object, problems or needs of the people around him. Active participation can include information in the form of a report. In addition to active participation to provide the report, the public can also monitor directly related to the security of a location. With advances in information and communication technology at this time, the public can monitor rapid and real time. Indonesia United (IDUN) utilizing virtual community to create a security monitoring system locations nationwide using the concept of mutual cooperation or crowdsourcing. The society can be provided information about their crime-prone locations using Indonesia United (IDUN) criminal system based website. Users can share information with location-based systems. This system will be use to report any crime where and when it happened. The proposed system will be very useful for users when traveling to unfamiliar areas, where they have little knowledge about the foreign environment. Keyword: Web Portal Crime, IDUN, Google Map, LBS, Traveling Areas, Crowdsourcing