bluuebunny/crossref_metadata_2025_split huggingface dataset:
Structure of echinoderm community in Nirwana Beach, used as learning media on the beach ecosystem
Authors: Samritin  , Agusalim  , Iksan M , Aba La , Taharu F I , Manan  , Batlajery S , Tambaru R 
Published: November 2019

Abstract
This study aims to determine the structure of the Echinoderms Community in the Coastal Area of Nirwana Beach, Baubau City, which is used as a media for the distribution of coastal ecosystems. The method used in this study is a survey method. Data were taken using purposive sampling technique and analyzed in quantitative descriptive. Calculations are used in quantitative data processing using the Shanon-Weaver Diversity formula, Simpson dominance and Darrell’s abundance. Vodopich is the number of individuals per unit area. Environmental factors measured are temperature, salinity, and pH. The results showed that at the two research sites namely on the Nirwana beach of Baubau City, Echinoderms found consisted of 4 classes, namely Holothuroidea, Ophiuroidea, Echinoidea dan kelas Asteroidea. The diversity index of Echinoderms found in the two research sites shows differences and if based on the diversity index benchmark values, both locations are in the low diversity category (H < 1,0) which means that productivity is very low as an indication of heavy pressure and an unstable ecosystem. The dominance value of Echinoderms indicates that at the Nirwana beach location no one has dominated. While the abundance value of each class in Echinoderms shows that at the beach location is still very low. This is caused by excessive community activities.
The role of communities in conserving mangrove forests to achieve sustainable development
Authors: Hardin  , Dewi I K , Alzarliani W O D , Azaludin  , Wardana  , Andara D , Ramadhan F M , Huda A M 
Published: November 2019

AbstractThe function of the forest and mangrove forest both ecologically, economically and socially is very much felt by the community so far, but now it has been damaged due to increasing population and very limited land availability, so people choose to open the forest with the aim of earning a living, conditions this of course needs to be accompanied by conservation efforts so that the function of forests for the community can continue without damaging the environment. The objectives of this study are: (1) Factors that cause forest destruction in the City of Baubau; (2) Community participation in forest conservation in the City of Baubau. This type of research is descriptive qualitative using interview techniques to informants both community leaders and the community around the forest. The results showed that (1) a. Lack of community knowledge about the function of forests, especially community forestry, if community groups who are members of community forestry are empowered, the community around the forest will prosper because in addition to carrying out the function of forest conservation, they can also sell forest products; b. The community still considers the forest as the main livelihood, therefore government efforts are needed in community empowerment in the economic field for those who live around the forest; c. Forest conversion and illegal logging, some gardening, making ponds or housing because of the lack of clarity of forest boundaries according to the community. (2) The community did not understand their role clearly, so they themselves destroyed the forest because they opened a garden in the forest up to several kilometers so that it penetrated the South Buton District, so there were still some trees visible from the outside but when they entered inside. all of their forests are garden communities so there needs to be serious attention from the local government. To enhance the role of communities in maintaining the economic and ecological functions of forests, communities need to be given basic knowledge, especially ecosystem restoration.
The application of documentary film in improving student interest: An alternative for environmental education
Authors: Sapar  , Alfian A , Isriami  , Herdjiono M V I , Jusni  
Published: November 2019

Abstract
Documentary films can be used as a learning media in the classroom. The objective of the study was to determine the increase of student interest in learning using documentary film. The film is about motion in plants to study natural processes in the environment.Data obtained using student response questionnaire and learning interest questionnaire before and after using documentary films.There were 86.1% of students who gave a positive response to the media. Student interest has a normalized gain of 0.63 in the medium category. Increased student interest in attention 0.67, relevance 0.61, confidence 0.59, satisfaction 0.64. This learning media can increase student interest in junior high school.
Analysis stability of predator-prey model with Holling type I predation response function and stage structure for predator
Authors: Pratama R A , Ruslau M F V , Nurhayati  , Laban S 
Published: November 2019

Abstract
This paper developed mathematical models with structural stages from predators, namely small predators and adult predators. The predation function of adult predators follows the Holling I response function according to the characteristics in the ecosystem. In this model, an analysis of the equilibrium value and stability of the interior equilibrium value is carried out. Analysis of the stability of interior equilibrium values with the system linearization method at the value of equilibrium. Four equilibrium values were realized. Each equilibrium value has its own characteristics and conditions. The stability characteristics of equilibrium values were obtained using the Routh-Hurwitz criteria. Also, consider the eigenvalue of the characteristic equation in the Jacobi matrix. We also identify population changes made with cases that allow the ecosystem to work.
Study on effect of temperature smelting and pouring to mechanical properties Aluminum 7075
Authors: Klemens A , Rahangmetan  , Cipto  , Sariman F , Syahid M 
Published: November 2019

Abstract
Aluminum alloy is one of the most non-ferrous metals used in the field of engineering and construction due to its mild nature and resistance to corrosion, while specifically for the A7075 has been widely used in the industrial world and aircraft construction. Cast temperature is one of the many variables found in the casting process. This variable is important because if the pouring temperature is too low then the cavity in the mold will not be fully filled where the inlet of the mold will freeze first, and if the pouring temperature is too high, this will cause shrinkage and loss of accuracy in the dimensions of the castings. The purpose of this research was to compare the aluminum smelting process and the aluminum pouring process in molds made of sand. From this research, the results obtained by increasing the temperature of casting on 7075 aluminum alloy casting. In this study increase the hardness of castings at a pour temperature of 7500 C in sample 1 of 78.4 HB, sample 2 is 79 HB and sample 3 is 76 HB then hardness decreases at 7700 C pouring temperature which is in sample 1 equal to 55.6 HB, sample 2 was 62 HB and sample 3 was 60.6 HB. Tensile strength tends to decrease with the highest increase in pouring temperature of 198 N/mm2 at pour temperature of 7150 C and at the lowest 150 N/mm2 at 7700 C.
Local tradition of mountain farmers in Japan and Batak area in industrial era 4.0
Authors: Situmorang F C , Ginting N M , Dawapa M , Duli A 
Published: November 2019

Abstract
Traditional societies have local knowledge in managing human relations with humans, human relationships with nature and human relations with God. Modern Japanese society recently still maintains its tradition, so it is often called Japan runs on two sides of culture, namely modern and traditional. In mountain farming in Japan, now agricultural activities are still carrying out ritual events such as the ritual of planting rice, rites weeding and repelling pests and rites of harvest and post-harvest. Japanese farmers do not kill wild animals in their fields but take precautions, so that wild animals do not come in to disturb their agriculture. Compared to mountain farming in North Sumatra, the traditional beliefs of the people have changed; they no longer carry out the traditional rites. Now farmers have hunted wild animals such as birds, bats, and snakes. Therefore, this situation is damaging the ecosystem because wild animals have been used as food so that there are many mice and planthopper pests/insects and for that, they use a lot of chemical poisons. This results in poor harvests and consequently, farmers being poor. Researchers use Fudo’s theory (The relationship of climate with the way of life of Watsuji Tetsuro) and the historical development theory of Saburo Ienaga and theories of comparative culture in examining the local wisdom of farming communities in these two ethnicities. This research shows how two nations which have relatively similar natural conditions but in historical development have different ways of life.
Heligman-pollard modification by using the makeham death rate to predict the life table of the elderly
Authors: Riyana M , Belwawin S M , Hasanah N , Ahmad M 
Published: November 2019

Abstract
Increasing the number of elderly people in the world is increasing every year, indicating that the economic factors of the community are getting better and also improving services and public health sciences and other factors. The purpose of this research is to find out the number of elderly people in a country. This can be seen by using a complete life table. But in some developing countries in the world do not have a complete life table and only have a abriged life table with an age interval of 5 years or 10 years. Based on the increase in the elderly population in the world researchers want to make the life table of the elderly based on a complete life table by using the interpolation method. Interpolation methods, for example, are the Heligman-Pollard, Elandt-Johnson, Kostaki, and others. In this study, the researchers tried to modify the Heligman-Pollard interpolation method by flexing it with the death rate of the Gompertz distribution. Thus formed the Heligman-Pollard modification using the death rate of the Gompertz distribution. Based on the modification, the result is that the method can predict the complete life table by the original complete life table data from the United States of America in 2014. With the R2 result of 0.985017
Prototype design of wind power water pump for irrigation
Authors: Jamaludin  , Parjono  , Permadi M G , Andari G , Sapsal M T 
Published: November 2019

Abstract
The main objective of this research was to produce a prototype of a simple water pump using a TSAV (vertical axis wind turbine) wind turbine as a prime mover and to analyze the relationship between wind speed and speed of windmill spin with the dependent variable in the form of water flow from the pump. The study used experimental and design methods. The test results obtained a wind speed of 3.6 m/s in an average windmill rotation of 5.6 rpm. Based on ANOVA test, the wind speed in the morning, afternoon, evening, and night had a significant difference. The highest wind speed occurred during the day at 4.3 m/s while the lowest wind speed occurred at night at 2.2 m/s. Water discharge generated by the pump was 2.0347 liters/minute with an efficiency of 89.7% pump. The results of the analysis showed that wind speed, windmill spin, and water discharge could change linearly. The higher the wind speed, the greater the number of spinning windmills, and the more water discharge produced. Therefore, the results of testing the pump can work well and has the potential to be developed in the region with the existing wind speed.
Comparison of competitive model advantage tools in the economic potential of north Kolaka Regency
Authors: Meilvidiri W , Ulita A S , Asrudi  , Alzarliani Wa Ode 
Published: November 2019

Abstract
The purpose of this study was to identify superior sectors in North Kolaka Regency. The study used competitive model advantage tools (LQ, DLQ, MRP, Tress Index, Shift Share, multiplier effects and compounding factors). Comparative results Sector of the economic potential in North Kolaka Regency that was; agriculture, forestry and fisheries, and construction sector are the base sectors that have a multiplier effect> 1. According to DLQ analysis, some sectors were experiencing rapid development namely the real estate sector, company services, government administration, defense and compulsory social security and health services and social activities. As Carvalho Classification Analysis like agriculture, forestry and fisheries sectors were classified as very high. Meanwhile, the mining and quarrying sector, water supply, waste management, and re-leaf; construction, wholesale and retail trade, Car and Motorcycle Repair, and other services were in the medium classification. According to MRP analysis, information and communication sector were in Classification 1. Tress index analysis during this period experienced an increasing trend.
The use of reading material based contextual approach to improve environmental concern attitude of elementary school students
Authors: Rahayu D P , Lieung K W , Fredy  
Published: November 2019

Abstract
This research objective was to improve the environmental concern attitude of grade 4 students by using reading materials. This research is a classroom action research. The research was conducted in two cycles with each cycle consisting of planning, action, observation, and reflection. The subject of this study was the grade 4 students of SDN 5 Panjer which amounted to 24 students. The data sources used in this research were students, teachers, and observers. Data analysis using quantitative and qualitative techniques, including data reduction, data presentation, and drawing conclusions. The results of this research indicate that students environmental concern attitude improved from pre-cycles, cycle 1 and cycle 2. The results of this research indicate that students environmental concern attitude improved from pre-cycles 25%, cycle 1, 48% to cycles 2, 82%. In learning, the teacher uses a reading material based contextual approach with steps: (a) constructivism, (b) inquiry, (c) questioning, (d) learning community, (e) modeling, (f) reflection, (g) authentic assessment. The conclusion of this study is the use of reading materials based contextual approach can improve environmental concern attitude of grade 4 elementary school students.
The effectiveness of applying contextual approach based on environment toward chemistry learning achievement and scientific attitude
Authors: Nurvitasari E , Maarebia R Z , Sumanik N B 
Published: November 2019

Abstract
This research aimed to know the effectiveness of applying contextual approach based on environment toward chemistry learning achievement and scientific attitude students in aspect (a) differences of students chemistry learning achievement if the early knowledge chemistry uses statistically (b) differences of students scientific attitude in experiment class after the teaching-learning process with contextual approach based on environment (c) differences of students scientific attitude between experiment and control class. The method of this research is to experiment with one-factor design (chemistry learning), two samples (control and experiment class) and one covariable (early knowledge students). In the experiment class using a contextual approach based on the environment while in control class using a conventional approach. Chemistry learning achievement measured with an achievement test and then analyzed with one way ANCOVA. Scientific attitude measured with scientific attitude questionnaire and then analyzed with one sample and two-sample t-test. Base on the ANCOVA analysis get value F0 = 4,431 with Ftable = 3.96. This matter shows that significant differences in students chemistry learning achievement with the contextual base on environment approach if the early knowledge chemistry uses statistically. Result of one sample t-test shows that the value t = 0,465 with t table = 1,67, it can be concluded that is no significant differences of students scientific attitude in experiment class after teaching-learning process with the contextual base on environment approach. Result of two-sample t-test shows that the value t = 0,05 with t table = 1,67, it can be concluded that is no significant differences of students scientific attitude between experiment and control class.
Effectiveness formulation made from PGPR Bacillus spp. in the protection of shallot plants from fusarium wilt
Authors: Suyono  , Baharuddin  
Published: November 2019

Abstract
Fusarium wilt disease (Fusarium oxysporum f. Sp. Cepae) is one of the critical and dominant diseases in shallots in South Sulawesi, which can reduce production by up to 60 percent. This study aims to determine the ability of the PGPR Bacillus spp. in protecting the onion plants from fusarium wilt (F. o. cepae) in the onion plants produced. The implementation method consists of; preparation of planting media, preparation of onion planting, supply and propagation of microbes (fungi F. o. cepae and PGPR bacteria Bacillus spp.), manufacture of PGPR bacteria Bacillus spp. formulations, and application of PGPR bacteria Bacillus spp. on planting. The study was conducted using a Completely Randomized Design (CRD) consisting of 5 treatments and three replications. Data were analyzed with ANOVA at the level of 5% and 1%. If it shows any treatment effect, then it is continued with BNJ test at 1% level. The results showed that treatment C showed the results of the emphasis on the intensity of the attack F. o. the best cepae with an average suppression of 83.44% compared to other treatments at the last observation.
Diversification of processed cocoa using coconut to increase the added value
Authors: Langkong J , Latief R , Rahman A N F , Dirpan A , Sapsal M T , Kamaruddin I , Marselia  
Published: November 2019

Abstract
Chocolate bar is one of secondary product of cocoa beans which are ready to consume. The aim of this research is to know the effect of shredded copra addition as a filler of chocolate bar. The method of this research started from the processing of beans into fats and cocoa powder, the making of shredded copra as a filler, and the making of chocolate bar. The evaluation done based on carbohydrate content, moisture content, ash content, fat content, fat blooming, and organoleptic in terms of color, odor, taste, and texture. The design of research used was completely randomized design in 3 repetition. Sample used is shredded copra (A1 = 6%, A2 = 9%, and A3 = 12%). The results shows that addition of shredded copra is significant at the 5% level of ash content and fat content. While organoleptic test shows that A1 (addition of 6% shredded copra) is most preferred by panellist in terms of color and texture, while A3 (addition of 12% shredded copra) is most preferred by panellist in terms of aroma and taste parameter.
Gauge invariant resolution of the A⃗ · p⃗ versus r⃗ · E⃗ controversy
Authors: Chou Hsiang Shun 
Published: November 2019

Abstract
We delve into the problem of the choice of the interaction Hamiltonian in quantum transitions by using the gauge invariant formalism. We demonstrate that the gauge invariant transition amplitudes for the bare-bare transitions, which is the case in the majority of experiments, are identical to the conventional results with the velocity form interaction Hamiltonian. Under the electric dipole approximation, the gauge invariant formalism derives the modified length form interaction Hamiltonian in any gauge. We propose a simple experiment that one can perform to verify our prediction. On the other hand, the gauge invariant transition amplitudes for the dressed-dressed transitions, which is the case in the Lamb shift experiment, are identical to the conventional results with the length form interaction Hamiltonian. There is no preferred gauge in the calculations of transition amplitudes. The present investigation resolves the long-standing

A

⃗

·

p

⃗

versus

r

⃗

·

E

⃗

controversy and clarifies the prevailing misconception in the literature.
Optimized Delta Check Rules for Detecting Misidentified Specimens in Children
Authors: Tan Rui Zhen , Markus Corey , Choy Kay Weng , Doery James C G , Loh Tze Ping 
Published: November 2019

AbstractObjectivesPreanalytical processes in pediatric patients are generally manual and associated with a higher risk of error. The optimized delta check rules for detecting misidentified children samples are examined.MethodsRelative difference and absolute different delta check limits were applied on original and reshuffled (to simulate sample mislabeling/mix-up) paired deidentified pediatric results of 57 laboratory tests. The sensitivity, specificity, and accuracy of a range of delta check limits were determined. The delta check limit associated with the highest accuracy was considered optimal.ResultsIn general, the delta check limits had poor to moderate accuracy (0.50-0.81) in detecting misidentified patient samples. The sensitivity (rule out misidentified sample) quickly deteriorated at increasing delta check limits. At the same time, the specificity (rule in misidentified sample) of the delta check limit was also low. The performance of the relative difference and absolute difference delta check rules was similar.ConclusionsOur findings showed poor delta check performance in the pediatric population. The high false-positive flag rate may lead to wasteful resource-intensive investigations and delay in result reporting. In addition, we observed that the optimized pediatric delta check correlated strongly with within-subject biologic variation, whereas delta check accuracy correlated poorly with index of individuality.
Clinicopathologic Features of Small Renal Masses Associated With Distant Metastatic Disease
Authors: Gallan Alexander J , Antic Tatjana 
Published: November 2019

Abstract

Objectives
To assess the clinicopathologic features of small renal masses (≤4 cm) associated with distant metastatic disease.

Methods
We identified radical or partial nephrectomies with renal cell carcinomas (RCCs) measuring 4 cm or less in size (pT1a or pT3a) from 2005 to 2015. Clinicopathologic features were compiled.

Results
A total of 590 RCCs 4 cm or less were identified, of which 3.9% were associated with distant metastatic RCC. Metastasis was more common in pT3a tumors 4 cm or less than pT1a tumors (19% vs 2.7%; P &lt; .01). Seventy percent of tumors were clear cell RCCs. Overall, 43% of patients had previously (30%) or subsequently (13%) diagnosed RCC prior to development of metastasis, 80% of which were the same histologic subtype as the small renal mass.

Conclusions
Distant metastatic disease was rarely encountered in patients with small renal masses. Many of the patients with distant metastases had previously or subsequently diagnosed RCC, which could represent the true source of metastatic disease.