Sekaran, Indonesia

State University of Semarang
Sekaran, Indonesia

The State University of Semarang is a public university in the city of Semarang, Central Java, Indonesia. The university is located in Gunungpati, a highland area of Semarang, Central Java.Unnes has eight faculties: Education, Language and Arts, Social science, Mathematics and Science, Engineering, Sport Science, Economics, and Law. Wikipedia.

Time filter
Source Type

Wahyuningrum I.F.S.,State University of Semarang
Nature Environment and Pollution Technology | Year: 2017

Soil loss as a result of soil erosion has an impact on the economy, specifically when it occurs in agricultural site. The economic impact can be on-site or off-site. The on-site impacts are in the form of nutrient loss, loss of existing production and less yield, while off-site effect consists of flooding, sedimentation and damage plantation. This study focuses on some of the economic aspects of soil loss as they apply to "in-the-field" practices. The research was carried out using current data from existing literature. The data were then interpreted statistically and comparisons between various factors were made. The results indicated that the contribution of rainfall to soil loss varied and depended on some other factors such as type of vegetation cover and soil slope. In terms of economic cost due to soil loss, the off-side cost which included indirect cost such as agricultural productivity was calculated as $176.33 per ton/ha/year. This indirect cost was about more than three times of the direct cost which was $53.35 per ton/ha/year. © 2017, Technoscience Publications. All rights reserved.

Wijayanti K.,State University of Semarang
Journal of Physics: Conference Series | Year: 2017

Mathematics proof is one of the characteristics of advanced mathematics thinking, and proof plays an important role in learning the abstract algebra included group theory. The depth and complexity of individual's understanding of a concept depend on his/her ability to establish connections among the mental structure that constitute it. One of the cognitive styles is field dependent/independent. Field independent (FI) and field dependent (FD) learners have different characteristics. Our research question is (1)How is the proposed refinement of preliminary genetic decomposition of group that is designed with a preliminary study of the learning with APOS works; (2) What understanding about group that is generated by student (Field Independent, Field Neutral, and Field Dependent) when learning through designed material. This study was a descriptive qualitative. The participants of this study were nine (9) undergraduate students who were taking Introduction of Algebraic Structure 1, which included group, in the even semester of academic year 2015/2016 at Universitas Negeri Semarang. Each of type of cognitive styles consisted of 3 participants. There were two instruments used to gather data: written examination in the course and a set of the interview. The FD and FN participants generated Action for a binary operation. The FI participant generated Action and Process for a binary operation. The FD, FN and FI participants generated Action, Process, Object, and Scheme for the set. The FD and FN participant did not generate mental structure for axiom. The FI participant generated Scheme for axiom. The FD, FN and FI participants tend to have no Coherence of Scheme of the group. Not all mental structure on the refinement of the preliminary genetic decomposition can be constructed by participants so well that there are still obstacles in the process of proving. © Published under licence by IOP Publishing Ltd.

Endroyo B.,State University of Semarang
AIP Conference Proceedings | Year: 2016

Muntilan sand is a volcanic sand generated by the volcanic activities of Mount Merapi which excavated from Muntilan district. Mount Merapi located at Central Java, Indonesia, is still active until now and erupts almost every 5-10 years. It's eruptions produced the form of lava which later get cold, perched around the peak, and forming lava domes. Furthermore, a part of lava dome avalanches will be slide down through the rivers on the the foot of the mountain. One of several districts which have rivers that containing volcanic materials is Muntilan. Muntilan sand has been used widely as a construction material. The prospects of thiruses were very good and may not be substituted by the other local sand. As a construction material, Muntilan sand must fulfill technical standard (durability number, fineness modulus, unit weight, silt content, organic content, and chemical content). But as a nature material, Muntilan sands also are influenced by circumstance of the environment. The research was conducted to describe the quality of Muntilan sand in a long term (the past until future). The method used was descriptive in longitudinal study and also a meta analysis. The result may useful for contractors and consultants (local, national and international/foreign) which will get a several projects in Central Java. The research conclusions are: (1) Until several years which will come, Muntilan sand was suitable for the construction works,(2) The durability, fineness modulus, unit weight, silt content, and organic content was in a constant rate, and have tend to increase for future, and (3) The chemical content was not in constant rate but varies in long term. © 2016 Author(s).

Yulianti D.,State University of Semarang
Journal of Physics: Conference Series | Year: 2017

The purpose of this study is to explore the application of Problem Based Learning(PBL) model aided withscientific approach and character integrated physics worksheets (LKS). Another purpose is to investigate the increase in cognitive and psychomotor learning outcomes and to know the character development of students. The method used in this study was the quasi-experiment. The instruments were observation and cognitive test. Worksheets can improve students' cognitive, psychomotor learning outcomes. Improvements in cognitive learning results of students who have learned using worksheets are higher than students who received learning without worksheets. LKS can also develop the students' character. © Published under licence by IOP Publishing Ltd.

Setyowati W.,State University of Semarang
AIP Conference Proceedings | Year: 2017

Settlement in Mount Merapi's slopes possesses a strong local wisdom. The purpose of this study was to look for Local Wisdom reflected on the orientation, and shape of the house in Pelemsari Village that location in the highest settlement in Mount Merapi's slopes. This research was investigated using qualitative-naturalistic approach. The results of the study showed that the house has madhep ngarep orientation which is meant facing the palace. Additionally, it also affirms to the public perception that the orientation of the house is do not dare facing the mountain. The closet is oriented to avoid facing the Qiblah. The orientation of omah bajang is facing south, so when giving offerings, the giver of offerings will be facing mountain. There are two shapes of a house namely omah sinom (wedok roof house) and omah kampung (lanang roof house). In the placement, the omah kampung is placed behind omah sinom, which has a meaning men allow women to sit on their laps so that the wives have a longer lifespan. © 2017 Author(s).

Earth fill work with large volumes of soil deposits will involve a lot of heavy equipment with a variety of functions and with different objectives. Where each machine will have different productivity anyway. So that in this paper discusses the calculation of the cost required to do the compacted earthfill work for embankment in accordance with the volume of work, the target date for implementation, and the number of heavy equipment needs. As the cost calculations used heavy equipment rental price per hour. In the cost analysis calculations use heavy equipment here there are several factors that we included in the calculation, are: 1.)Hauling distance; 2.)Effective hour a day; 3.)Change factor of Soil Volume; 4.)Effective Speed; 5.)Equipment efficiency factor; 6.)Equipment coefficient; 7.)Cycle Time. © 2017 Author(s).

Indrianingrum L.,State University of Semarang
AIP Conference Proceedings | Year: 2017

The Government has intervened to deal with various affordable public housing programs, as well as financing programs for Low Income society in Indonesia. The characteristics of this society in each region are so diverse, that made the housing programs for this social segment uneasy in reaching the right target. Regulation of Housing and Settlement No. 2/2001 has mandated that the State are obliged to implement a habitable public housing for people, especially for the low income society. The purpose of this study is exploring the low-income residents' preferences and affordability of home ownership for their families in the poorest sub-district of Semarang. Aspects of studies include family conditions, financing, location, housing type and price. The research used a descriptive method to analyze a set of questionnaire data, distributed to low income residents in Sub district Tanjungmas, which isthe poorest sub district in Semarang. The results showed that the respondents developed a vision of home ownership by saving their money for the allocated housing budget and taking a bank installment. They tended to plan to get a house in their current neighborhood or nearby or anywhere else with the same price range. They really understood that, in order to get a better home and neighborhood they have to pay for higher prices. Therefore, their housing criteria or standards were set based on the quality of life in their current residential area, and should be located in a township (kampung). © 2017 Author(s).

The purpose of this research is to evaluate the pattern of performance management of Community Service Empowerment Learning-Universitas Negeri Semarang in improving the entrepreneurship of the graduate candidate of Vocational Technology Education Institution. This evaluation research uses Context Evaluation, Input evaluation, Process evaluation and Product evaluation method (CIPP) to evaluate the performance management of Community Service of Empowerment Learning-Universitas Negeri Semarang. The location of research was in Kandri Subdistrict-Indonesia. The subject of research is the Kandri Subdistrict community, especially the groups of the youth, students, subdistrict organizers, community organization, and culinery and handicraft industry, as well as the students who join the program of Community Service of Empowerment Learning-Universitas Negeri Semarang. The object of research is the pattern of perfomance management of Community Service Empowerment Learning-Universitas Negeri Semarang in improving the entrepreneurship of the graduation candidate of Vocational Technology Education Institution. The research result shows the pattern of Community Service Empowerment Learning-Universitas Negeri Semarang is able to improve the enterpreneurship of graduate candidate of Vocational Technology Education Institution. The pattern of Community Service Empowerment Community-Universitas Negeri Semarang which is Education for Sustainable Development (ESD)in the field of education, training, and assistance continuously can grasp and develop competency and balance mindset of students including triple bottom line which mutually connectedamong the sectors of social, economic, cultural, and environment so that it can increase the entrerpreneurship on the graduates candidate of Vocational Technology Education Institution. © 2017 Author(s).

Kusumawardaningsih Y.,State University of Semarang | Hadi M.N.S.,University of Wollongong
Composite Structures | Year: 2010

Confining columns with fibre reinforced polymer (FRP) composites have been investigated in the last few decades to address the problem of upgrading and retrofitting reinforced concrete (RC) columns; however, most studies have concentrated on solid columns. This paper investigates the comparative behaviour of FRP confined hollow RC columns subjected to concentric loading. A total of twelve RC columns made from high strength concrete (HSC) were cast and tested. Six of the columns had a circular cross section (two solid columns, two hollow columns each having a circular hole, and two hollow columns each having a square hole) and the remainder columns had a square cross section (two solid columns, two hollow columns each having a circular hole, and two hollow columns each having a square hole). Six columns in total, three from each configuration were left unconfined as control specimens, while the others were confined with FRP. It was found that FRP confinement increased hollow RC columns' axial load and ductility capacities; and hollow columns having circular holes had better performance compared to hollow columns having square holes. © 2010 Elsevier Ltd.

Anis S.,Universiti Sains Malaysia | Anis S.,State University of Semarang | Zainal Z.A.,Universiti Sains Malaysia
Renewable and Sustainable Energy Reviews | Year: 2011

Biomass gasification presents highly interesting possibilities for expanding the utilization of biomass as power generation using internal combustion engines or turbines. However, the need to reduce the tar in the producer gas is very important. The successful application of producer gas depends not only on the quantity of tar, but also on its properties and compositions, which is associated with the dew-point of tar components. Class 5, 4, and 2 tar become a major cause of condensation which can foul the engines and turbines. Hence, the selectivity of tar treatment method to remove or convert class 5, 4, and 2 tar is a challenge in producer gas utilization. This review was conducted to present the recent studies in tar treatment from biomass gasification. The new technologies with their strengths and the weaknesses in term of tar reduction are discussed. © 2011 Elsevier Ltd. All rights reserved.

Loading State University of Semarang collaborators
Loading State University of Semarang collaborators