bluuebunny/crossref_metadata_2025 huggingface dataset:
ANN for Assessment of Energy Consumption of 4 kW PV Modules over a Year Considering the Impacts of Temperature and Irradiance
Authors: Alblawi Adel , Elkholy M. H. , Talaat M.
Published: December 2019

Solar energy is considered the greatest source of renewable energy. In this paper, a case study was performed for a single-axis solar tracking model to analyze the performance of the solar panels in an office building under varying ambient temperatures and solar radiation over the course of one year (2018). This case study was performed in an office building at the College of Engineering at Shaqra University, Dawadmi, Saudi Arabia. The office building was supplied with electricity for a full year by the designed solar energy system. The study was conducted across the four seasons of the studied year to analyze the performance of a group of solar panels with the total capacity of a 4 kW DC system. The solar radiation, temperature, output DC power, and consumed AC power of the system were measured using wireless sensor networks (for temperature and irradiance measurement) and a signal acquisition system for each hour throughout the whole day. A single-axis solar tracker was designed for each panel (16 solar panels were used) using two light-dependent resistors (LDR) as detecting light sensors, one servo motor, an Arduino Uno, and a 250 W solar panel installed with an array tilt angle of 21°. Finally, an artificial neural network (ANN) was utilized to estimate energy consumption, according to the dataset of AC load power consumption for each month and the measurement values of the temperature and irradiance. The relative error between the measured and estimated energy was calculated in order to assess the accuracy of the proposed ANN model and update the weights of the training network. The maximum absolute relative error of the proposed system did not exceed 2 × 10−4. After assessment of the proposed model, the ANN results showed that the average energy in the region of the case study from a 4 kW DC solar system for one year, considering environmental impact, was around 8431 kWh/year.
Assessment of Atmospheric Deposition and Vitality Indicators in Mediterranean Forest Ecosystems
Authors: Jakovljević Tamara , Marchetto Aldo , Lovreškov Lucija , Potočić Nenad , Seletković Ivan , Indir Krunoslav , Jelić Goran , Butorac Lukrecija , Zgrablić Željko , De Marco Alessandra , Simioni Guillaume , Ognjenović Mladen , Jurinjak Tušek Ana
Published: December 2019

Considering the fragility of the Mediterranean environment, there is an increasing need to improve the knowledge of this forest environment. The aim of this study was to examine the effects of air pollution on the forest ecosystem’s condition by analyzing tree vitality. The study area was chosen to represent the most important and the most common species in Mediterranean forest ecosystems of the Eastern Adriatic coast. Quercus pubescens, Quercus ilex, Pinus halepensis, and Pinus nigra plots were equipped with rain collectors and dendrometer bands. Sampling, measurements, and analyses of atmospheric deposition, foliar nutrient, defoliation, and growth were all carried out. Results showed that actual N deposition loads were the lowest in Aleppo pine forest and the highest in holm oak forests. This, however, did not have an effect on the concentrations of N in foliage. Most elements’ concentrations were in the plausible range. No relevant differences in mean defoliation between the plots were observed. The plots with a lower percentage of basal area increment (BAI%) were found to have lower defoliation. The research was conducted to bridge the gap in the knowledge of air pollutants and vitality indicators in different forest types. These findings are a valuable contribution to the sustainable forest management of Mediterranean forest.
Corporate Governance Structure, Financial Capability, and the R&D Intensity in Chinese Sports Sector: Evidence from Listed Sports Companies
Authors: Chen Gang , Zhang James J. , Pifer N. David
Published: December 2019

Innovations are the foundation of an enterprise’s sustainable development, which is particularly important for sports firms in an evolving Chinese sport industrial environment. Analyzing publicly-listed sports firms on The New Third Board (NTB) in China, this study examined the influence of corporate financial capability and corporate governance structure on firms’ R&D intensity through a series of multiple regression models. Findings revealed that corporate financial capability is an important determinant of R&D intensity, and corporate governance structure has a small but meaningful effect on R&D intensity. Specifically, for Chinese sports firms, several financial capability indicators, such as return on equity, accounts receivable turnover, assets turnover, and profit growth rate, have positive relationships with R&D intensity; however, other financial capability indicators, such as leverage and cash flow, have negative relationships with R&D intensity. Limited evidence was found to support the notion that corporate governance significantly influences R&D intensity, although sports firms with good governance mechanisms are more likely to increase the positive effects of financial capabilities on R&D intensity while decreasing the negative effects. Discussions were centered on planning and executing R&D activities in sports companies.
The Collapse of the Morandi Bridge in Genoa on 14 August 2018: A Collective Traumatic Event and Its Emotional Impact Linked to the Place and Loss of a Symbol
Authors: Rania Nadia , Coppola Ilaria , Martorana Francesco , Migliorini Laura
Published: December 2019

The collapse of the Morandi bridge in Italy, which took place in the summer of 2018, has had enormous emotional, economic, and social consequences for the inhabitants of the area, which are felt throughout the world. As seen in the literature, collective traumatic events increase the experience of insecurity and paranoia, thus increasing the perception of vulnerability. The present work aims to bring out the emotions most experienced by the participants connected to the traumatic event in question, paying attention to the possible solutions to be proposed to local stakeholders from a sustainability perspective, this way favouring community empowerment. The research, carried out with the photovoice technique, involved 30 young adults residing in areas near the event. The results illustrate how the participants experienced mainly feelings of emptiness, vulnerability, and fear as well as anger, despair, and mistrust of the institutions. It was also stressed that the economic and structural hardships hit the inhabitants hard. There have been many concrete solutions identified by the participants: creating a support network, supporting the local economy, and keeping the memory alive. The research and application implications underline the importance of using photovoice within community interventions, a tool that facilitates awareness and active citizenship.
Exploring Group Solidarity for Insights into Qualities of T-learning
Authors: Mudokwani Kuda , Mukute Mutizwa
Published: December 2019

Across the world, organised groups of farmers participating in just and sustainability transformations encounter multiple obstacles. Through solidarity manifested in iterative processes of questioning, co-learning, collective action and reflection, and value creation for themselves and for others, some succeed in overcoming them. This article investigates how a district organic farmer association in Zimbabwe is encountering and handling group solidarity challenges arising from shifting from local to district level coordinated organic production and marketing. Based on the use of change laboratory, this paper explores solidarity at the local niche and networked district level to seek insights into the qualities of T-learning.
Analyzing Sustainability Awareness among Higher Education Faculty Members: A Case Study in Saudi Arabia
Authors: Alkhayyal Bandar , Labib Wafa , Alsulaiman Talal , Abdelhadi Abdelhakim
Published: December 2019

Purpose: The purpose of this study is to examine the understanding of sustainability of the faculty members in higher education in Saudi Arabia. One of the main objectives is to explore how they implement sustainability in the courses offered in one of the major non-profit private universities in Riyadh. Findings: A survey was conducted among the faculty members to investigate their awareness on this topic. Survey results were compared between the different departments to understand how the faculty members can contribute to sustainable education if they increase their knowledge through training and workshops related to the topic. The comparative analysis allows us to define the guidelines to build a strong institution that presents itself as a leader and change-driver in the Gulf region. The survey was done among the limited number of faculty members in the benchmark university, searching for answers about sustainability using the top-down methodology. The survey fulfilled the original aim of developing an evidence base of faculty members existing expertise, experience and interest in sustainability. The survey is also an important step to embed sustainability into the benchmark university. It also provides an opportunity to reflect and put forward suggestions on what it means to have sustainability as a core value and strategic priority. Originality/value: According to the Saudi Vision 2030, developed following the UN requirements, the Saudi Government expects companies to be more responsible towards society and sustainable economy. Increasing the understanding and learning of sustainability among faculty members is beneficial to young people to build their professional careers in a sustainable environment, considering the environmental, social, and economic implications. In this context, the role of faculty members is crucial to strengthen the awareness and knowledge about sustainability in higher education among the new generation. The work identified opportunities to engage all staff on what it means to have sustainability as a core value and strategic priority.
Riemann-Symmetric-Space-Based Models in Screening for Gene Transfer Polymers
Authors: Lungu Claudiu N. , Grudzinski Ireneusz P.
Published: December 2019

Today, gene transfer using polymers as transfer vectors is hardly studied. Some polymers have an excellent gene-carrying ability, but their cytotoxic and biocompatibility properties are not suitable for use. Thus, increased insight into the drug space of such structures is needed in the screening for suitable molecules. This study aimed to introduce a mathematical model of polymers suitable for genes transfer. In this regard, Riemann surfaces were used. The concerned polymers were taken from secondary published experimental data. The results show that symmetric Reimann spaces are suitable for further drug screening. The branch point values of Riemann surfaces are especially increased for the polymers suitable in gene transfer.
Comparative Analysis of Roseoloviruses in Humans, Pigs, Mice, and Other Species
Authors: Denner Joachim , Bigley Tarin M. , Phan Tuan L. , Zimmermann Cosima , Zhou Xiaofeng , Kaufer Benedikt B.
Published: December 2019

Viruses of the genus Roseolovirus belong to the subfamily Betaherpesvirinae, family Herpesviridae. Roseoloviruses have been studied in humans, mice and pigs, but they are likely also present in other species. This is the first comparative analysis of roseoloviruses in humans and animals. The human roseoloviruses human herpesvirus 6A (HHV-6A), 6B (HHV-6B), and 7 (HHV-7) are relatively well characterized. In contrast, little is known about the murine roseolovirus (MRV), also known as murine thymic virus (MTV) or murine thymic lymphotrophic virus (MTLV), and the porcine roseolovirus (PRV), initially incorrectly named porcine cytomegalovirus (PCMV). Human roseoloviruses have gained attention because they can cause severe diseases including encephalitis in immunocompromised transplant and AIDS patients and febrile seizures in infants. They have been linked to a number of neurological diseases in the immunocompetent including multiple sclerosis (MS) and Alzheimer’s. However, to prove the causality in the latter disease associations is challenging due to the high prevalence of these viruses in the human population. PCMV/PRV has attracted attention because it may be transmitted and pose a risk in xenotransplantation, e.g., the transplantation of pig organs into humans. Most importantly, all roseoloviruses are immunosuppressive, the humoral and cellular immune responses against these viruses are not well studied and vaccines as well as effective antivirals are not available.
Development and Validation of a S1 Protein-Based ELISA for the Specific Detection of Antibodies against Equine Coronavirus
Authors: Zhao Shan , Smits Constance , Schuurman Nancy , Barnum Samantha , Pusterla Nicola , van Kuppeveld Frank , Bosch Berend-Jan , van Maanen Kees , Egberink Herman
Published: December 2019

Equine coronavirus (ECoV) is considered to be involved in enteric diseases in foals. Recently, several outbreaks of ECoV infection have also been reported in adult horses from the USA, France and Japan. Epidemiological studies of ECoV infection are still limited, and the seroprevalence of ECoV infection in Europe is unknown. In this study, an indirect enzyme-linked immunosorbent assay (ELISA) method utilizing ECoV spike S1 protein was developed in two formats, and further validated by analyzing 27 paired serum samples (acute and convalescent sera) from horses involved in an ECoV outbreak and 1084 sera of horses with unknown ECoV exposure. Both formats showed high diagnostic accuracy compared to virus neutralization (VN) assay. Receiver-operating characteristic (ROC) analyses were performed to determine the best cut-off values for both ELISA formats, assuming a test specificity of 99%. Employing the developed ELISA method, we detected seroconversion in 70.4% of horses from an ECoV outbreak. Among the 1084 horse sera, seropositivity varied from 25.9% (young horses) to 82.8% (adult horses) in Dutch horse populations. Further, sera of Icelandic horses were included in this study and a significant number of sera (62%) were found to be positive. Overall, the results demonstrated that the ECoV S1-based ELISA has reliable diagnostic performance compared to the VN assay and is a useful assay to support seroconversion in horses involved with ECoV outbreaks and to estimate ECoV seroprevalence in populations of horses.
Virucidal Activity of Gold Nanoparticles Synthesized by Green Chemistry Using Garlic Extract
Authors: Meléndez-Villanueva Mayra A. , Morán-Santibañez Karla , Martínez-Sanmiguel Juan J. , Rangel-López Raúl , Garza-Navarro Marco A. , Rodríguez-Padilla Cristina , Zarate-Triviño Diana G. , Trejo-Ávila Laura M.
Published: December 2019

Measles virus (MeV) is a paramyxovirus that infects humans, principally children. Despite the existence of an effective and safe vaccine, the number of cases of measles has increased due to lack of vaccination coverage. The World Health Organization (WHO) reports that the number of cases worldwide multiplied fourfold between January and March 2019, to 112,000. Today, there is no treatment available for MeV. In recent years, it has been demonstrated that natural extracts (herbal or algal) with antiviral activity can also work as reducing agents that, in combination with nanotechnology, offer an innovative option to counteract viral infections. Here, we synthetized and evaluated the antiviral activity of gold nanoparticles using garlic extract (Allium sativa) as a reducing agent (AuNPs-As). These nanoparticles actively inhibited MeV replication in Vero cells at a 50% effective concentration (EC50) of 8.829 µg/mL, and the selectivity index (SI) obtained was 16.05. AuNPs-As likely inhibit viral infection by blocking viral particles directly, showing a potent virucidal effect. Gold nanoparticles may be useful as a promising strategy for treating and controlling the infection of MeV and other related enveloped viruses.
Evaluation of GloFAS-Seasonal Forecasts for Cascade Reservoir Impoundment Operation in the Upper Yangtze River
Authors: Chen Kebing , Guo Shenglian , Wang Jun , Qin Pengcheng , He Shaokun , Sun Sirui , Naeini Matin Rahnamay
Published: December 2019

Standard impoundment operation rules (SIOR) are pre-defined guidelines for refilling reservoirs before the end of the wet season. The advancement and availability of the seasonal flow forecasts provide the opportunity for reservoir operators to use flexible and early impoundment operation rules (EIOR). These flexible impoundment rules can significantly improve water conservation, particularly during dry years. In this study, we investigate the potential application of seasonal streamflow forecasts for employing EIOR in the upper Yangtze River basin. We first define thresholds to determine the streamflow condition in September, which is an important period for decision-making in the basin, and then select the most suitable impoundment operation rules accordingly. The thresholds are used in a simulation–optimization model to evaluate different scenarios for EIOR and SIOR by multiple objectives. We measure the skill of the GloFAS-Seasonal forecast, an operational global seasonal river flow forecasting system, to predict streamflow condition according to the selected thresholds. The results show that: (1) the 20th and 30th percentiles of the historical September flow are suitable thresholds for evaluating the possibility of employing EIOR; (2) compared to climatological forecasts, GloFAS-Seasonal forecasts are skillful for predicting the streamflow condition according to the selected 20th and 30th percentile thresholds; and (3) during dry years, EIOR could improve the fullness storage rate by 5.63% and the annual average hydropower generation by 4.02%, without increasing the risk of flooding. GloFAS-Seasonal forecasts and early reservoir impoundment have the potential to enhance hydropower generation and water utilization.
Plastic deformation of andalusite single crystal Al2SiO5
Authors: Doukhan Jean-Claude , Paquet Jacques
Published: December 2019

Specimens with three different orientations have been cut from a gem quality andalusite single crystal. Uniaxial compression at various temperatures combined with TEM investigations of the deformed samples show that [001] {110} is the easy glide system of andalusite, the elastic limit of which increases with increasing temperature while very long and very straight c screw dislocations are left in the crystals. It is suggested that these c screw dislocations are dissociated out of the {110} glide plane and that this dissociation would become wider as temperature increases.

In the present experiments without confining pressure, it was not possible to activate a glide or b glide. For orientations promoting these glides, the samples exhibit a brittle behaviour even at temperature as high as 900 °C.
Étude expérimentale de la distribution de l'aluminium entre bain silicaté basique et spinelle chromifère. Implications pétrogénétiques : teneur en chrome des spinelles
Authors: Maurel Colette , Maurel Pierre
Published: December 2019

The partitioning of aluminium between silicate melt (olivine tholeiite) and chromian spinel was studied experimentally. Runs were carried out at temperatures of 1 180˗1 300 °C and oxygen fugacities of 10⁻⁷˗10⁻⁹ atmosphere, at one atmosphere total pressure. The Al₂O₃ content of spinel is related to the Al₂O₃ content of melt as follows : (Al₂O₃)[sp] = 0.035 (Al₂O₃)[liq], where Al₂O₃ is expressed in weight %. Thus there is a positive correlation between the partition coefficient D = (Al₂O₃)[sp]/(Al₂O₃)[liq] and the Al₂O₃ content of the melt. Temperature and oxygen fugacity have only a minor effect on D. Consequently, within the limits of experimental conditions, the chromium content of spinel increases as the Al₂O₃ content of the melt decreases.
Prospects for the Introduction of the Interactive Electronic Technical Manuals Technology in the Practice of Operation of Manned Spacecraft Simulators
Authors: Zhokhov Aleksandr Ivanivich , Ignatiev Sergey Vasilievich
Published: December 2019

The paper considers an existing information technology to support operation of products namely the technology of interactive electronic technical manuals (IETM) and substantiates the expediency of introducing this technology in the practice of operation of the manned spacecraft simulators.
Hybrid Aqueous/Organic Electrolytes Enable the High-Performance Zn-Ion Batteries
Authors: Huang Jian-Qiu , Guo Xuyun , Lin Xiuyi , Zhu Ye , Zhang Biao
Published: December 2019

Rechargeable aqueous zinc ion batteries (ZIBs) are considered as one of the most promising systems for large-scale energy storage due to their merits of low cost, environmental friendliness, and high safety. The utilization of aqueous electrolyte also brings about some problems such as low energy density, fast self-discharge, and capacity fading associated with the dissolution of metals in water. To combat the issues, we utilize a freestanding vanadium oxide hydrate/carbon nanotube (V
2
O
5
·nH
2
O/CNT) film as the cathode and probe the performance in aqueous/organic hybrid electrolytes. The corresponding structural and morphological evolution of both V
2
O
5
·nH
2
O/CNT cathode and Zn anode in different electrolytes is explored. The integrity of electrodes and the suppression of zinc dendrites during cycles are largely improved in the hybrid electrolytes. Accordingly, the battery in hybrid electrolyte exhibits high capacities of 549 mAh g
-1
at 0.5 A g
-1
after 100 cycles and 282 mAh g
-1
at 4 A g
-1
after 1000 cycles, demonstrating an excellent energy density of 102 Wh kg
-1
at a high power of 1500 W kg
-1
based on the cathode.
Defect Engineering in 2D Materials: Precise Manipulation and Improved Functionalities
Authors: Jiang Jie , Xu Tao , Lu Junpeng , Sun Litao , Ni Zhenhua
Published: December 2019

Two-dimensional (2D) materials have attracted increasing interests in the last decade. The ultrathin feature of 2D materials makes them promising building blocks for next-generation electronic and optoelectronic devices. With reducing dimensionality from 3D to 2D, the inevitable defects will play more important roles in determining the properties of materials. In order to maximize the functionality of 2D materials, deep understanding and precise manipulation of the defects are indispensable. In the recent years, increasing research efforts have been made on the observation, understanding, manipulation, and control of defects in 2D materials. Here, we summarize the recent research progress of defect engineering on 2D materials. The defect engineering triggered by electron beam (e-beam), plasma, chemical treatment, and so forth is comprehensively reviewed. Firstly, e-beam irradiation-induced defect evolution, structural transformation, and novel structure fabrication are introduced. With the assistance of a high-resolution electron microscope, the dynamics of defect engineering can be visualized
in situ
. Subsequently, defect engineering employed to improve the performance of 2D devices by means of other methods of plasma, chemical, and ozone treatments is reviewed. At last, the challenges and opportunities of defect engineering on promoting the development of 2D materials are discussed. Through this review, we aim to build a correlation between defects and properties of 2D materials to support the design and optimization of high-performance electronic and optoelectronic devices.
Capital Markets in India: A Conceptual Framework
Authors: Tigari Harish , Aishwarya R
Published: December 2019

The history of Indian capital market goes back to the 18th century when the securities of East Indian company was traded. The contribution of Indian capital market for the sustainability of Indian economy is considerably since the year 1890’s. The capital market plays a   role in terms of wealth distribution and economic development of a country like India.  Capital market acts as a transformer of savings into capital investment. The capital market has witnessed a major reforms since the implementation of New Economic Policy 1991 and thereafter. The Indian government and SEBI have adopted the various reforms in order to enhance the performance of Indian stock exchanges. The present study tries to analyze the recent reforms in Indian capital market from the year 2010 onwards. The present research is largely based on the secondary data.  The statistical facts and figures regarding the growth and development of the capital market was available from various journals, publications and websites.
The Tourism industry - An Economic Outlook
Authors: Sunitha W
Published: December 2019

The present study deals with the impact of tourism industry on economic development. The study of tourism industry has drawn the attention of scholars and researchers at national and international levels. This is because tourism has become an integral part of human life. In fact, this is the oldest and fast growing industry . it makes human life happy and frees from family as well as professional burdens. So the peopleof all categories wether rich or poor, young or old give importance to tourism. Tourism not only provides pleasure, entertainment, direct experience, knowledge but also changes our life style. It also causes socio-economic and cultural changes in many ways. Further, it has been a source o employment, income and cultural changes. Hence, this study focusses on the impact of tourism on economic out look at macro level.
Paradigm Shift in Curriculum: A Visionary Mission
Authors: Khuntia Dillip Kumar , Barik Prasanta Kumar
Published: December 2019

Human beings came to the world along with ideas which got nurtured and transmitted from generation to generation. To upgrade quality of life he became educated through formal, informal and non-formal ways. Curriculum was structured formally at different levels of education which is being upgraded and refined from time to time. Here in this paper an attempt has been made to relocate the paradigm shift in curriculum in a mission mode taking the suggestions as follows: Culture specific pedagogy; Moral Education for revival; Curricular renovation, reformation and innovation in terms of reality and fact; Vocationalization in true sense; Emphasis on Practical aspect; Meeting the needs of the locality; Imparting Patriotism through curriculum; Preaching and practising Yoga Education; Indian Traditional Culture from the age old spiritual scriptures; Committee consisting people having practical experience from the grass root level; Placing importance upon joyful learning; Providing opportunity to prepare the ground for all round development; Meeting aims of educations from a broader perspective; Adopting innovation of other countries; Fund for conducting Research; Application of Research findings; Finding the Vision and Mission; Making them free from the over burden of examination; Protecting environment through education; Emphasizing experiential learning; To inculcate global human values among the youth; To prepare for global citizenship.
Tinjauan Hambatan pada Rancangan Kapal Tongkang Tanpa Awak Menggunakan Metode Computational Fluid Dynamics - OpenFOAM
Authors: Hasmi Abrari Noor , Nurcholik Samsu Dlukha , Nurcholik Samsu Dlukha , Prasetyo Muhammad Budi , Prasetyo Muhammad Budi , Alamsyah Alamsyah , Alamsyah Alamsyah , Huda Thorikul , Huda Thorikul
Published: December 2019

Di Indonesia, proses pengiriman batubara dengan kapal tongkang banyak dijumpai karena kemudahan aksesnya dimana kapal tongkang memiliki sarat air (draft) yang lebih kecil dibandingkan dengan jenis kapal lain. Penelitian ini mencoba menentukan hambatan pada kapal tanpa awak berbentuk kapal tongkang untuk beberapa kecepatan menggunakan metode CFD dengan program OpenFOAM. Metode ini mendiskritisasi persamaan Navier Stokes dengan menggunakan pendekatan metode volume hingga. Kapal tongkang digambar menggunakan perangkat lunak Maxsurf modeler sebelum diintegrasikan kedalam program CFD. Diskritisasi dilakukan dengan memastikan area sekitar lambung kapal terdiskritisasi cukup rapat. Hasil penelitian menunjukan bahwa Hambatan pada kapal tongkang berkisar antara 39.39kN-227.963kN untuk kecepatan 3-9knot.
Analisa Pengaruh Penggunaan Bahan Bakar Diesel Like Fuel dan Minyak Solar Terhadap Unjuk Kerja Multi Swirl Combustion System (MSCS) Piston Chamber pada Small Marine Diesel Engine
Authors: Haryono Edi
Published: December 2019

Produksi minyak dunia diperkirakan telah mencapai puncaknya pada tahun 2000, ini berarti bahwa eksplorasi minyak bumi sudah maksimal dan selanjutnya akan mengalami penurunan. Ini akan menyebabkan dalam kurun waktu 20 tahun produksi minyak dunia akan kembali seperti pada tahun 1980-an(OPEC ,2009). Di lain pihak ketergantungan terhadap minyak bumi pada waktu yang sama akan terus meningkat akibat pertambahan penduduk dan kegiatan industri dan pembangunan. Akibat dari hal ini adalah harga energi yang semakin tinggi dan pasokan minyak yang menurun. Hal ini dapat dirasakan dari naiknya harga minyak mentah dan dicabutnya subsidi harga bahan bakar minyak oleh pemerintah Indonesia. Pada penelitian ini peneliti tertarik pada minyak solar dari oli bekas(Diesel – Like Fuel) di gunakan sebagai bahan bakar pada motor diesel dengan menggunakan Multi Swirl Combustion System (MSCS) Piston Chamber. Penelitian ini dilakukakan untuk mengetahui unjuk kerja dari motor diesel Multi Swirl Combustion System (MSCS) Piston Chamber saat menggunakan bahan bakar solar dari daur ulang minyak pelumas bekas(Diesel – Like Fuel) dan minyak solar(Pertamina Dex) sebagai pembanding. Metode yang digunakan dalam melakukan penelitian ini adalah metode eksperimental. Pengujian dilakukan dengan melakukan eksperimen pada variasi bahan bakar. Lalu akan dilakukan pengamatan terhadap unjuk kerja dari motor diesel yang digunakan untuk melakukan penelitian ini. Parameter unjuk kerja yang akan diamati adalah daya motordan BSFC. Dari hasil analisa terhadap daya motor diesel PE(Watt) penggunaan MSCS Piston Chamber pada beban 1000 Watt, 1500 Watt, dan 2000 Watt, nilai PE(Watt) pertamina dex lebih tinggi dari Diesel – Like Fuel/DLF sebesar rata – rata 9,86 %, 10,09 %, dan 10,32 %. Dari hasil analisa terhadap BSFC penggunaan MSCS Piston Chamber pada beban 1000 Watt, 1500 Watt, dan 2000 Watt, BSFC pertamina dex lebih rendah dari Diesel – Like Fuel/DLF sebesar rata – rata 6,36 %, 8,98 % dan 13,26 %. Dapat ditarik kesimpulan berdasarkan BSFC dan daya motor(PE) penggunaan bahan bakar minyak solar(Pertamina Dex) lebih ekonomis dibandingkan dengan minyak solar dari oli bekas(Diesel – Like Fuel)
KETERLIBATAN PEREMPUAN TANI PEMILIK TANAH PADA PROGRAM REDISTRIBUSI TANAH DALAM RANGKA MENCAPAI KESEJAHTERAAN EKONOMI RUMAH TANGGA (Studi Kasus di Desa Candirejo, Kecamatan Ponggok, Kabupaten Blitar)
Authors: Brillian Pintakami Lintar , Eko Wahyu Budiman
Published: November 2019

This study aims to describe the extent of involvement of women landowners in managing their land and analyze the dual role of women landowners and the contribution of women landowner income to household economic welfare from the Land Redistribution program in Blitar District. The research method uses a qualitative approach. Data was collected through Focus Group Discussion (FGD), In-depth Interviews, participatory observation, and documentation.Determination of the sample using the snowball sampling technique and obtained 30 informants as farmers (male and female). The selection of 8 key informants was determined by purposive sampling. Data analysis uses Harvard Model gender analysis techniques, qualitative analysis of phenomenology, and analysis of household income contribution. The results showed that in 12 stages of productive activities 6 activities were carried out by farmers again, 2 activities were carried out by women farmers, and 4 activities were carried out together. The division of gender activities shows that 71% of reptoductive activities are carried out by women landowners or wives. Whereas the social activities of women devote the same time with a percentage of 50%. However, in the formal management of the Land Redistribution program and coaching there is no special attention to the role of women in the management and sustainability of the program. The contribution of women landholders to household income is Rp. 31,900,530 / year or 50% of total household income. Nevertheless, women who own land are able to allocate their time to continue to carry out their reproductive roles in the household while men do not. This research proves that women landowners have the potential to achieve successful management of agricultural land and are able to improve household economic prosperity.
DESCRIPTION OF MATHEMATICAL COMPREHENSION BASED ON COGNITIVE-CATEGORY STYLE ON FOUR-SIDED SHAPE TOPIC OF 8TH GRADE STUDENTS IN MTSN 1 KOTA MAKASSAR
Authors: Asmaun Asmaun
Published: November 2019

The research was descriptive research by using qualitative approach, The subject consists of four students of VIII.1 MTsN 1 Kota Makassar. The results of the study towards 4-sided concepts are: the pupil, who had a field-independent-cognitive style, was able to reach 5 indicators well of 6 indicators. Generally, a field-independent student understood the concepts by considering the properties of each 4-sided shape; it caused that he/she was able to achieve 4 of 5 indicators of principle comprehension which had been determined. The field-independent student, generally, understood how to use and relate the principles of 4-sided object, yet he/she were less skillful in algebra process. However, the field-dependent one has not been succeed well in reaching a 6-defined indicator; only with wholly-seen shape did the student understand the concepts of 4-sided object. But for 4-sided-conprehension principle, the student barely achieved the 5-defined indicators. The student apprehended generally on 4-sided principle limited in the principle use of a certain 4-sided object. In this case, the student has not been skillful enough to understand the relationships between the object moreover, he/she cannot use the principle to solve problems.
ANALYSIS OF MATHEMATICAL RESOLUTION REVIEWED FROM COGNITIVE STYLE AND MATHEMATICAL ANXIETY OF STUDENTS IN STUDENTS OF CLASS VII SMP FRATER MAKASSAR
Authors: S Silvester
Published: November 2019

This study aims to 1) description of the mathematical problem solving in terms of cognitive style field-independent (FI) mathematical anxiety and low and high, 2) description of mathematical problem solving in terms of cognitive style field-dependent (FD) and mathematical low and high anxiety. Type a descriptive qualitative research. Instrument and data collection that is used in the form of Test anxiety now, GEFT, math test and interview. Data analysis techniques used, namely the reduction of data, data presentation, data verification and withdrawal of the conclusion. Research results: 1) the stylish Subject of cognitive ability in resolving the problem FI i.e. analytical and clear, but there is confusion on step completion caused high anxiety. 2) FD Subject in resolving problems i.e. thorough thinking because anxiety low was able to complete the issue hadn't yet high anxiety while still think dabble so can not solve the problem completely. 3) link between cognitive style and anxiety seen in a mathematically solve problems I on righteousness calculations and measures penyelesainnya. While the mathematical anxiety cognitive style is influenced by the FI and FD is seen in resolving problems, a subject that has broad perceptions of analytic and so was able to resolve the problem, while the subject is more intuitive, FD presepsi narrow and unable to resolve the problem completely
THE EFFECT OF TEACHER PERSONALITY AND LEARNING MOTIVATION ON MATHEMATICAL LEARNING OUTCOMES OF SEASON STATE STUDENTS IN MAROS DISTRICT
Authors: Sahara Rina Juanti
Published: November 2019

The purpose of this research is to know: (1) Influence of interaction between teacher's personality and student's learning motivation toward student's mathematics learning result of SMP Negeri in Maros, (2) Difference of mathematics learning result of student of SMP Negeri in Maros based on teacher personality type, (3) Difference of learning result of mathematics of student of SMP Negeri in Maros based on difference of learning motivation. This type of research is ex post facto research. Data were collected by questionnaire of teacher's personality, questionnaire of learning motivation and test of learning result that has been tested for its validity and reliability. Data analysis technique used is two way anava using computer program aid R. The result of hypothesis test of this research show. (i) There is no interaction between teacher personality and learning motivation toward mathematics learning outcomes of SMP Negeri in Maros, (ii) There is a difference of mathematics learning result of students of SMP Negeri in Maros based on personality type of teacher, where teacher extravertion personality is best and has highest average learning result score (iii) There is difference of mathematics learning result of students of SMP Negeri in Maros based on differences in motivation to learn, where it is found that high intrinsic learning motivation that gives the optimum effect and to improve learning outcomes then high intrinsic learning motivation that needs to be improved
MULTIVARIATE ADAPTIVE REGRESSION SPLINES MODELING FOR HOUSEHOLD FOOD SECURITY IN CENTRAL BORNEO PROVINCE 2017
Authors: Wibowo Ananto
Published: November 2019

This study aims to make a model household food security with social, economic and demographic variables in Central Borneo Province using nonparametric regression, Multivariate Adaptive Regression Splines (MARS). The source of data was 2017 Socioeconomic Survey (SUSENAS) from Central Bureau of Statistics. The model shows that all variables have significant to affect household food security with importance level: area type (100%), age (99.47%), the amount of people in a household (88.57%), access to credit (81.01%), head of household education (19.74%), and gender (11.08%). In addition, there are four basic functions with no variable interaction, two basic functions with two variable interactions and two basic functions with three variable interactions on the MARS model specification.
CHARACTERISTICS OF MATHEMATICAL REASONING IN SOLVING MATHEMATICAL PROBLEMS IN TERMS OF THE COGNITIVE STYLE OF THE ELEVENTH GRADE STUDENTS OF SMA NEGERI 3 WAJO
Authors: Suaedy Nurjayanty
Published: November 2019

This research aims at describing characteristics of students mathematical reasoning in solving mathematical problem regarded from cognitive style. Based on data analysis, it can be concluded that (1) The ways of the subject reasoning of visualizer cognitive style are analyzing, synthesizing, analyzing, then generalizing. While the ways of the subject reasoning who are verbalizer cognitive are synthesizing, analyzing, then generalizing. (2) The sub indicators of subject reasoning of  visualizer cognitive style are presenting mathematical statement through picture specifically and obviously, conducting a beginning asumption specifically, explaining the concept relevancy used through picture, giving reason logically in solving problem and using other alternatives with different strategies, rechecking every steps of completion, tending to conclude  the result of completion with picture and tending to conclude generally based on the specific case from mathematical symptom. While the subjects who are verbalizer cognitive are presenting mathematical statement through verbal symbol specifically and obviously, less specific in doing assumption, relating the concept but ordering based on the sequences known and asked with the writing of symbol in modelling the problem, giving the relevant argument to the steps of completion with the same strategies, rechecking every steps of completion, tending to conclude the result of completion with verbal symbol, and tending to conclude generally based on the specific case and mathematical symptom.
EFFORTS TO IMPROVE THE CAPABILITY OF SCHOOL PRINCIPALS IN IMPLEMENTING ACADEMIC SUPERVISION THROUGH PRODEP PROGRAM REPLICATION ASSISTANCE BY SCHOOL SUPERVISORS IN 5 FOSTER SCHOOLS IN MAKASSAR CITY
Authors: Raisuddin Muhammad
Published: November 2019

School Action Research was conducted with the aim of increasing the ability of principals to carry out academic supervision in five Makassar City target schools in the 2018-2019 academic year. Actions are carried out through screening through replication of the proDEP program. The results of the study concluded that by providing assistance through measures, the ability of principals to carry out academic supervision increased. Indicators of increasing the ability to carry out academic supervision of principals are measured through the completeness, quality and authenticity of their work. from cycle 1 with a value of 80.93 to cycle 2 with a value of 95.93.
Efforts To Improve Pkn Learning Achievement In Class XII SMA Negeri 3 Ambon By Applying Two Stay-Two Stray Engineering In Learning
Authors: Tahalele A.R
Published: November 2019

This research is a classroom action research, which aims to improve the Learning Achievement of Civics in Class XII Students of SMA Negeri 3 Ambon By Applying the Two Stay-Two Technique. The subjects in this study were students of Class XII  of SMA Negeri 3 Ambon with a total of 32 students The procedure of implementing CAR is presented in the form of a cycle (cycle) assessment process which is expressed in a PTK spiral. The PTK spiral actually describes cycle after cycle. One cycle consists of four main components of CAR, namely: action planning, action implementation, action observation, and reflection and revision of actions. an increase in the percentage of student activity during learning and an increase in the percentage of students who have finished learning, ie in cycle I the percentage of student activity is 57.50%, increasing in cycle II to 77.50%, and in cycle III increasing to 87.50%, while the percentage of the total number of students who completed study in the first cycle was 53.13%, increased in the second cycle to 71.88%, and in the third cycle increased to 87.50%.
Efforts To Improve Learning Achievement Of 8th Grade Students In SMPN 9 Sorong Through The Application Of Problem Solving Type Cooperative Learning Models In Christian Religious Education Subjects
Authors: Tamaela Ellen
Published: November 2019

This research is a classroom action research that aims to see whether there is an influence on the application of problem solving learning models in an effort to improve PAK learning achievement. The subjects in this study were selected from students of class VIII-2 SMPN 9 Sorong City in the 2018/2019 academic year with a total of 25 students. The research procedure is a series of stages of research from beginning to end. This CAR procedure consists of 2 cycles. Each cycle consists of four stages as follows: 1) planning; 2) implementing actions; 3) observation and evaluation of actions; and 4) reflection of actions. Research data were collected using interviews, observations, and tests. The data of this study were analyzed using data analysis techniques as follows; (1) Comparative analysis is done by comparing the results obtained in the first cycle with the second cycle and; (2) Qualitative Analysis in the form of field notes which are presented in detail and in full throughout the research process. This research is said to be successful if in learning students get a minimum of 75% of the number of students already active in the learning process and a minimum of 75% student achievement increases. The results of the study show that: (1) based on the results of research observations, it can be concluded that the application of the problem solving learning model can increase student activity during learning. This is indicated by a change in students' attitudes in learning, including the interaction and cooperation between students the better, the more students have the courage to express ideas and opinions in front of the class. The center of learning is no longer on the teacher. Students are required to actively search for information and must be able to exchange ideas; (2) based on data in the form of pre-observation values ??and after research, it can be concluded that the application of problem solving learning models can improve student learning achievement.
The Effect Of The Application Examples Non Examples Learning Model In Science Biology Subjects To Improve The Control Of The Concept Of 7th Grade Students In SMPN 9 Ambon
Authors: Parinussa Lona
Published: November 2019

This research is a classroom action research that aims to determine whether there is an influence on the application of the examples non examples learning model in an effort to improve the mastery of the concepts of VII-3 grade students of SMPN 9 Ambon in learning biology especially on microscope material. The subjects in this study were students of class VII-3, SMP Negeri 9 Ambon with a total of 28 students consisting of 15 male students and 13 female students. The research procedure is a series of stages of research from beginning to end. The CAR procedure consists of 2 cycles with 3 meetings per cycle, according to the level of the problem to be solved and the conditions to be improved. Each cycle consists of four stages as follows: 1) planning; 2) implementing actions; 3) observation and evaluation of actions; and 4) reflection of actions. The data in this study were collected through tests, observations, interviews applying the Examples Non Examples learning model, and discussions between teachers, peers and collaborators to reflect the results of the PTK cycle. The results of the study show that: (1) The model of learning examples non examples can improve the mastery of microscope material in students of class VII-3, SMP Negeri 9 Ambon; (2) Student learning outcomes for microscope material have increased from cycle I to cycle II; (3) Student learning outcomes have increased along with the increase in students' cooperative skills.
Efforts To Improve The Learning Outcomes Of Indonesian Of 7th Grade Students In SMPN 9 Sorong Through The Implementation Of The Cooperative Model Integrated Reading And Composition
Authors: Sabring L Muh.
Published: November 2019

This research is a classroom action research using a qualitative description analysis that aims to determine whether there is an influence of the application of the CIRC type cooperative learning model in an effort to improve student learning outcomes. The subjects in this study were students of class VII-3, SMPN 9 Sorong whose average learning achievement was lower than other class VII, with a total of 26 students. The procedure of the study was to choose a learning model that was assessed according to the material presented. The PTK procedure consists of 2 cycles with 3 meetings per cycle, according to the level of the problem to be solved and the conditions to be improved. Each cycle consists of four stages as follows: 1) planning; 2) implementing actions; 3) observation and evaluation of actions; and 4) reflection of actions. Data in this study were collected through observation and tests to find out the extent of students' mastery learning towards the material delivered using the CIRC type of cooperative learning model. The results of the study show that: (1) In using the CIRC type of cooperative learning model the teacher must also pay attention to the importance of classroom management. This is for the sake of the smooth learning process; (2) The average score of students' understanding in paying attention to problems about determining the main ideas and problems in arlikel through intense reading activities, in the first cycle of 54.8, in the second cycle increased by 69.2, while in the third cycle increased by 83, 5 is quite good. Likewise, the completion of learning in cycle I by 57.6% increased in cycle III to 65.3% and also increased in cycle III to 100%; (3) CIRC type of cooperative learning model can improve student learning outcomes and can improve students' ability to solve problems regarding basic competencies in understanding explanatory text through oral and written on Indonesian subjects in VII grade students of SMPN 9 Sorong.