Universitas Islam Indonesia
  • Yogyakarta, DI Yogyakarta, Indonesia
Recent publications
Ambidexterity is still a concern of many researchers, especially in the field of SMEs because of its influence on innovation performance. Many of the previous studies have explored various factors, but not many put together corporate openness and compliance management in perspective. As such, this paper offers the concept as a foundation for improving innovation performance through openness and compliance management. Corporate openness is a key factor in the relationship of ambidexterity and innovation performance. Openness helps SMEs to gain access to external knowledge at minimal cost, and also understands competitor activity in the market thus helping SMEs to bridge the innovation gap between them, competitors and markets, with less time and cost. Compliance Management is a process to ensure companies and employees complies to all laws, regulations, ethical standards and practices applicable to organizations and industries. We argue that the absence of compliance with the laws, regulations, standards and ethical practices conducted by SMEs into the performance of innovation will be hampered. This is due to SMEs need to concentrate on resolving things that are obstacles to operationalization, then innovate after the problems are resolved. Therefore, compliance is needed in addition to corporate openness to improve the performance of SME innovation.
This study aims to analyze the role of stakeholders in the Special Region of Yogyakarta, which consists of the palace and the Pakualaman, Kaprajan (local government and district/city government), Campus, Village, and Community. This study also analyzes how the stakeholders manage and understand the Yogyakarta privilege fund. This research uses the descriptive analysis qualitative method. Determination of the sample is done by sampling technique, Clustered random sampling. The number of samples in this survey is 462 respondents with a ±5% margin error at the 95% confidence level. The data collection method was that the selected respondents were interviewed face-to-face using a questionnaire by interviewers who had been trained. The results of this study provide evaluations and recommendations for stakeholders in optimizing the management of Yogyakarta’s privileged funds. This study provides a mapping of the management and performance of stakeholders in the Special Region of Yogyakarta.
The relationship between employees and the organization is not only transactional, which is regulated in formal contracts, but also involves informal and relational relationships as described in the social exchange theory. The formal relationship is in the form of organizational justice, while the informal relationship is in the psychological contract between the organization and employees. A fair relationship can positively affect job satisfaction, and can negatively affect employee behavior such as procrastination. Procrastination is behavior influenced by complex factors such as personal characteristics, task characteristics, and organizational environment. The relationship between organizational justice, psychological contract, job satisfaction, and procrastination is still a gap in the literature, as well as has become the motivation for this research. This article discusses the moderating role of psychological contract breach on the effect of organizational justice on job satisfaction and procrastination. This study contributes through a literature review on the effect of flexible and fair contracts on job satisfaction and procrastination behavior.
Nowadays, valuable, rare, imperfectly imitable, and non-substitutable (VRIN) resource that is essential for a firm to survive in a turbulent environment might reside inside an alliance. A collaboration that benefits all alliance members is an alternative strategy, where alliance members will be able to use a relational resource, without any need to invest or acquire it. Utilization of relational resource by alliance members can create a relational rent, a supernormal profit that can be enjoyed by alliance members and will not be achieved by a firm individually. Supply chain collaboration ensures a stable supply for a firm as well as lower transaction cost. Supply chain collaboration also increases the ability of the firm to sense and respond rapidly, properly, and efficiently to environmental change, which means that supply chain collaboration promotes organizational agility. An agile firm will be able to reconfigure owned resources and combined them with a relational resource that potentially results on the ability to develop products that fit the market and increase revenue and at the end may increase relational rent. Our literature review finds that supply chain collaboration has a positive effect on relational rent, both directly and through the development of organizational agility.
This study aims to determine the relationship between religiosity, moral reasoning, and internalization of pure values as the mediator of prosocial behaviour among students in Banda Aceh, Indonesia. The Secondary Islamic Education Internalization Scale (SPPIP-M), Behaviour Reasoning Scheme Indicator (UPSTA), and Prosocial Tendencies Measure (PTM) scale were used to measure the religiosity, moral reasoning, and internalization of pure values prosocial behaviour of students. The result showed a link between religiosity, moral reasoning, and internalization of pure values with prosocial behaviour of secondary school students in Banda Aceh.
The present study describes the production of biodiesel from castor plant (Riccinus communis) using heterogeneous base catalyst of NaOH dispersed on bentonite. The catalysts were prepared via wet impregnation by loading a known amount of NaOH on natural bentonite in various NaOH-to-bentonite ratios of 5 %, 10 %, 20 %, and 25 % (w/w). The prepared catalysts were characterized by AAS, FTIR, XRD, GSA, and SEM; and further used in a transesterification reaction at 60 °C for 4 h. The liquid yields were analyzed by FTIR and GC–MS, ¹H NMR, and ASTM. The modification of a larger concentration of NaOH led to decreasing the mineral structure of natural bentonite. The homogeneous distribution of NaOH on bentonite influenced the increasing pore size of catalyst compared to natural bentonite. The enhanced physicochemical properties significantly increased the catalytic activity. The transesterification reaction of castor oil into biodiesel over 25 % NaOH/bentonite catalyst showed the highest conversion of 76.94 % biodiesel yield. The obtained biodiesel properties was agreed with the ASTM standard specifications.
In this study, we have developed a new composite material consisting of polyacrylamide (PAM) and graphene oxide (GO), enhanced by clove essential oil (CEO). Firstly, we synthesized the PAM/GO composite via a physical adsorption method and then uniformly distributed the CEO into the PAM/GO composite via an ultrasonication process. We then characterized the resulting nanocomposite by XRD, UV–Vis and FTIR spectroscopy in order to confirm the uniform distribution of CEO on the PAM/GO composite. The results demonstrate that PAM/GO can support and stabilize the CEO molecules. Moreover, we compared the antibacterial activity of PAM/GO/CEO with other samples, i.e. PAM, GO and the PAM/GO composite. The results showed that the composite containing CEO had the highest antibacterial activities against S. aureus and E. coli bacteria, with clear zones of 12 and 14 mm, respectively. The mechanism of this antibacterial activity can be attributed to the properties of GO and CEO.
Adsorption and photoconversion of CO2 are alternative methods to reduce global gas emissions. However, to get optimal results, a material with specific properties is needed to increase the efficiency of removal and conversion of CO2. Currently, mesoporous-based materials are getting much attention to be developed for adsorption and photocatalyst CO2 because they have a large specific surface area. However, these characteristics are still likely to continue to be improved in various ways. This review summarized some potential ways to increase adsorption capacity and photoconversion of CO2 compounds through the synthesis of routes, modifications, and composite systems. In addition, this review has also discussed the application of mesoporous materials for smart surfaces by paying attention to the toxicity and stability value of the material. Expectantly, this review can be used for references to develop mesoporous materials that focus on CO2 adsorption and conversion in the future.
This study identified the spatial distribution pattern of the ambient air quality in the Yogyakarta Urban Area. It was performed to determine the distribution pattern of SO2, CO, and NO2 concentrations for 2016–2019 (pre-pandemic) and 2020 (during pandemic). Furthermore, the spatial analysis was performed using the Inverse Distance Weighting interpolation method. This study proved that spatial modeling using this method has good accuracy, and it is easier to map the distribution pattern of ambient air quality. In 2020, most of the locations met the quality standard (62.64%). As a result, the SO2 and CO parameters immediately showed that most conditions are satisfactory. In 2016, the SO2 parameters met the quality standards at 74.24% of locations. In 2020, the number increased to 85.71%. In addition, the CO parameter reached the quality standard at 81.82% of locations in 2016 and a perfect level of 100% in 2020. This occurred due to the effects of the COVID-19 pandemic because most human and business activities decreased drastically. Therefore, all studies can be used as the basis for air quality modeling and post-COVID-19 predictions. This study is also important as a policy material in the monitoring and management system of ambient air quality in urban areas
Three-dimensional data is becoming more prevalent these days. Unsupervised data analysis can be used to find hypothesized patterns of interest from the three-dimensional data. In this context, clustering can be used to group observations along a single dimension, but its usage is restricted in three-dimensional data domains as the observations are significantly connected in subspaces of the overall space. Bi-clustering addresses the issue of subspace clustering but ignores the third dimension. As a result, the concept of tri-clustering, coherent subspaces within three-dimensional data, was introduced. To deal with these issues, tri-clustering, the identification of coherent subspaces within three-dimensional data, has been extensively studied. Despite the wide range of contributions to this topic, there is still room for improvement in terms of a more structured view of tri-clustering, extracting multiple forms (e.g., row-major clusters, regular and irregular clusters), and improved algorithmic techniques. This paper introduces a novel data structure suffix forest to design a tri-clustering algorithm. The application of this data mining algorithm is reflected on the Indian Forest Dataset published by the Forest Survey of India. Here, we were successfully able to implement the tri-clustering concept with an informative structure where changes in forest cover and mangrove cover over time are monitored in different states and union territories. This kind of study may be the pioneer for research on biodiversity data analysis for exploring the relationships of different biodiversity traits with respect to both time and geographical region would be one of our future research works.
This work aimed to synthesize a reusable catalyst of KF/Mg-Al layered double hydroxide (KF/LDH) for a microwave-assisted biodiesel conversion from rice bran oil (RBO). The LDH was synthesized by co-precipitation method of Mg and Al precursors with additional surfactant of cetyl trimethyl ammonium followed by hydrothermal method, for furthermore, an impregnation procedure was applied to combine KF with LDH by using impregnation method. Instrumental analysis of materials was performed by XRD, gas sorption analysis, SEM-EDX, TEM and XPS method. Effect of KF loading onto LDH on the specific surface area and solid basicity was also studied. From the characterization by XRD, it can be concluded that the impregnation increased specific surface area of LDH without any structural destruction, which was also confirmed by the lattice fringe comparison by HRTEM analysis and surface analysis by XPS. The specific surface area enhancement is in line with the increasing solid basicity which directly enhanced the catalytic conversion of RBO into biodiesel. Statistical optimization of the use of KF/LDH was conducted by response surface methodology of Box-Behnken Design for the range of 2–4 g/100 mL of catalyst dose, 3–8 of the methanol to oil ratio, and 10–30 min of reaction time. It was revealed that all factors are significantly affect the yield. The KF/LDH catalyst is also reusable as it does not loss the activity until 5th cycles. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Carboxylic acid–pyridine heterosynthon (CPHS) is one of the most common synthons found in cocrystal packing. Phenylacetic acid (PYC)–nicotinamide (NIC) (PYCNIC) cocrystals were used as a computational model to assess the most important factor in the emergence of the synthon. Geometry optimization was carried out on every possible two molecules of PYC–NIC conformation based on B3LYP-D3BJ/6-311G (d,p). Various energetic parameters, including total energy, interaction energy, and hydrogen bond energy, were used to compare the existing conformation to the putative conformation. The conformation with CPHS has −53.87 kJ mol ⁻¹ of single intermolecular hydrogen bond energy (EHB), which is the strongest of all. It turns out that there is no other parameter better than EHB to describe the superiority of CPHS in PYCNIC.
Newspapers and other mass media outlets are critical in shaping public opinion on a variety of contemporary issues, including the COVID-19 pandemic. This study examines how the pandemic is portrayed in the news and how the public reacted differently in the West and East using archival data from Facebook posts about COVID-19 news by English-language mass media between January 2020 and April 2022 ( N = 711,646). Specifically, we employed the Valence Aware Dictionary and sEntiment Reasoner (Vader) to measure the news tone on each COVID-19 news item shared on Facebook by mass media outlets. In addition, we calculated a polarity score based on Facebook special reactions ( i.e ., love, angry, sad, wow, haha, and care) received by each post to measure public reactions toward it. We discovered that people in Western countries reacted significantly more negatively to COVID-19 news than their East counterparts, despite the fact that the news itself, in aggregate, generally contained a relatively similar level of neutral tone in both West and East media. The implications of these distinctions are discussed in greater detail.
Seepage from the earth dam’s body reduces the amount of water in the dam’s reservoir and threatens its stability. In this paper, the earth-type Sattarkhan Dam on the Aharchai River has been investigated. In this regard, the SEEP/W model from the GeoStudio 2018 software suite was used for modeling. This study examines the effects of various lengths and positions of cutoff wall and horizontal drainage on seepage, uplift pressure, and exit gradient. Increasing the length of the cutoff wall reduces seepage in both sections, with a more significant effect on Section 2; it also decreases the uplift pressure and the exit gradient. Changing the position of the cutoff wall has a significant effect on seepage fluctuations in Section 1 but has no effect on seepage in Section 2; in positions 2 to 7, the uplift pressure values are nearly identical, and the exit gradient is most significant at position 1 and least at position 2. Increasing the horizontal drainage’s length increases seepage, reduces uplift pressure, and increases the exit gradient. The closer proximity of the horizontal drainage position to the dam’s core increases seepage and decreases uplift pressure and exit gradient. Finally, it is concluded that the construction of a cutoff wall and horizontal drainage with appropriate lengths and positions reduces risk and improves the stability of earth dams.
Psychological distress is a common mental health problem among university students, including students from Low and Middle-income countries (LMICs), such as Indonesia. Mindfulness interventions that can reduce psychological distress have been growing in popularity and are being increasingly delivered through the Internet. The present study examined the development process and preliminary outcomes of an internet-delivered mindfulness program for distressed Indonesian university students. To develop a more culturally relevant program for Indonesian students, we conducted qualitative interviews and focus group discussions among students. We then conducted an open pilot trial with a sample of 40 university students with elevated psychological distress. Participants took part in the 4-lesson counsellor-guided online mindfulness intervention over 4 weeks and completed measures of distress (DASS-21) at baseline and post-treatment. During the pilot trial, the rate of program completion was 70%, and we found large, significant reductions in distress from baseline to post-treatment (Hedges’ g's = 1.05-1.68). These findings show that it is feasible to deliver an online mindfulness intervention for distressed Indonesian students. A randomized controlled trial is needed to explore the efficacy of this program.
In this study, the manganese dioxide (MnO2) nanosheets were successfully embedded onto boron and sulfur co-doped g-C3N4 (CNBS) nanotubes to construct the flower-like core-shell CNBS@MnO2 heterojunction with Z-scheme structure for the enhanced photodegradation of diclofenac (DCF) in the presence of peroxymonosulfate (PMS) and 460-nm visible light. The CNBS@MnO2 provides large specific surface area and reduced interfacial resistance for rapid electron transport. Moreover, the redox cycling of Mn species effectively activates PMS to produce sulfate radicals for DCF photodegradation. The PMS-based photodegradation of DCF over CNBS@MnO2 displays the excellent photodegradation performance after 15 min of irradiation, and the efficiency is highly dependent on initial pH, ion species, and concentrations of PMS and DCF. The CNBS@MnO2 also shows its excellent stability and reusability over ten cycles. Besides, h+, O2●− and SO4●− are the dominantly reactive species for the enhanced degradation of DCF over Z-scheme CNBS@MnO2 heterojunction. The possible reaction mechanism as well as the degradation pathway of DCF over CNBS@MnO2 in the presence of PMS is also proposed. Results clearly highlight the superior photoactivity of Z-scheme CNBS@MnO2 toward micropollutant degradation by PMS activation, which can open an avenue to fabricate the g-C3N4 nanotube@metal oxide structure as an effective activator for water and wastewater purification.
Although many scholars have examined moral values in Indonesian primary school textbooks, there is a paucity of literature on the theme of adopting a combination of systemic functional linguistics-informed language appraisal and moral foundation theories. To fill this lacuna, the present study aims to analyse the representation of moral values in the thematic textbook through the main characters in the stories. This research adopts language appraisal by Martin and White (2005 Martin, J. R., and P. R. R. White. 2005. The Language of Evaluation: Appraisal in English. Hampshire: Palgrave Macmillan.[Crossref] , [Google Scholar]) and the moral foundation theory by Graham et al. (2013 Graham, J., J. Haidt, S. Koleva, M. Motyl, R. Iyer, S. P. Wojcik, and P. H. Ditto. 2013. “Moral Foundations Theory: The Pragmatic Validity of Moral Pluralism.” Advances in Experimental Social Psychology 47: 55–130. doi:10.1016/B978-0-12-407236-7.00002-4.[Crossref], [Web of Science ®] , [Google Scholar]). The findings showcase that moral values of the main characters in thematic textbooks encompass individualising foundations and binding foundations. Individualising foundations consist of care and fairness values, which promote individual protection and cooperation; meanwhile, binding foundations encompass loyalty, authority, and sanctity, which unite individuals to their social groups. Implications and discussions are also presented at the end.
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8,705 members
Suci Hanifah
  • Department of Pharmacy
Jaka Sriyana
  • Department of Economics
Woko Suparwoko
  • Faculty of Civil Engineering and Planning ( FTSP)
Is Fatimah
  • Department of Chemistry
Arif Hidayat
  • Department of Chemical Engineering
Jl. Kaliurang KM 14,5, 55501, Yogyakarta, DI Yogyakarta, Indonesia
Head of institution
Fathul Wahid