bluuebunny/crossref_metadata_2025 huggingface dataset:
INNOVATIVE WAYS TO TEACHING ONLINE LESSONS IN PHYSICAL EDUCATION AND SPORTS
Authors: Romila Cristina , Tudor Felicia , Ciuciulete Georgiana , Grancea Marius , Pana Gabriela
Published: February 2023

2020 has been a difficult year in many ways. One of these was teaching online in pre-university education. If until the year 2020 we did not imagine that physical education and sports lessons could be taught online, the need to learn from home proves that every school subject in the national curriculum can be taught at home.
The methods used by many teachers were: the inverted class method or the intuitive method. These methods are based on student-centered learning.
The need to use electronic means has made us, teachers, adapt to current teaching conditions. In this paper we would like to present the site sporteducatie.ro, a specialized site, created as a good opportunity to present useful teaching materials, which can be used by teachers of physical education and sports, coaches, but also by students and parents.
The site was created in November 2020 by teachers of physical education and sports, from the Middle School Nr. 30, Brasov: Mrs. Romila Cristina, Mrs. Tudor Felicia, Mrs. Pana Gabriela, Mrs. Ciuciulete Georgiana and Mr. Marius Grancea, personal trainer.
The site contains teaching materials in the form of videos, which include exercises for different contents of physical education and sports lessons or sports training, presentations, planning documents, assessment tools.
The site was promoted primarily to physical education and sports teachers and coaches from Brasov County, through social networks.
In order to identify the impact of the materials posted on the site, we have carried out a questionnaire-based survey answered by teachers, coaches and students who accessed the sporteducatie.ro website. The analysis of the results was done through the statistical method, calculating the percentage for each response to the total sample.
The conclusions received from users prove the usefulness of the materials created and the efficiency of the site created.
HOW HAS THE LAK COMMUNITY EVOLVED IN ITS FIRST DECADE? A DETAILED MODELING THROUGH INTERACTIVE CNA SOCIOGRAMS
Authors: Ionita Remus , Corlatescu Dragos georgian , Dascalu Mihai , Mcnamara Danielle s.
Published: February 2023

The process of identifying relevant scientific papers and authors is becoming more and more tedious both to neophytes, as well as to experts searching for state-of-the-art approaches, due to the high-speed development of recent emerging domains and the exponential increase of the available publications. This paper presents an overarching architecture grounded in Cohesion Network Analysis (CNA) and provides a detailed showcase on the papers published at the Learning Analytics & Knowledge (LAK) conference between 2011 and 2020. We applied our method to LAK because it is the most representative sub-community from the Learning Analytics domain. On the other hand, CNA Sociograms might be applied to journals, academic departments, business groups, etc., having the potential to aid in understanding the past and current foci of a community and its directions. We propose an end to end method, from crawling the ACM Digital Library to insights presentation, using our own Visual 2-Mode CNA Graph and visualizations in Kibana, customizable and interactive, that facilitates individuals' interactions with a new domain. Our method brings valuable insights about the semantic relatedness between authors and other types of associations presented as links within the resulting 2-mode cohesion graph. Moreover, we introduce multiple statistics about top ranked authors, institutions, as well as the most central domain articles. In contrast to previous experiments, we introduce a comprehensive use case, an enhanced processing pipeline with new heuristics, as well as new CNA sociogram visualizations. This semantic-based approach facilitates inferring key authors' and publications' interrelations and trending topics over time.
ACTIVE LEARNING METHODS APPLIED IN TEACHING AND LEARNING STEM-BASED COURSES
Authors: Borodzhieva Adriana
Published: February 2023

Today, worldwide, employers in the industry are often dissatisfied with modern engineering education, which is not adapted to the needs of business. Governments in all European countries face the problem of low student motivation to study science, technology, engineering and mathematics (STEM). Students are dissatisfied with university education, describing it as "outdated, impractical and uninteresting". University professors are dissatisfied with the declining competencies in STEM and motivation to learn of young people. A huge challenge for all university professors is to find teaching methods that increase the motivation of the new generation of students, "students of the digital era, students of the seven screens", especially when studying subjects related to mathematics, which are extremely difficult and repulsive according to the students in recent years. In the conditions of the pandemic of COVID 19, when it was necessary to immediately switch to online learning, in the last academic year (2019-2020), the teaching staff was faced with the need to generate many similar assignments for students to avoid the possibility of deception ("copy and paste") of the students during the tests, as well as by "filling in the time" in order not to allow one student to solve the assignment of another student for the duration of the test. All this necessitated the creation of the application in MS Excel, described in the paper, which would solve the task assigned to the students. The paper briefly presents the methods applied during the last academic year in the study of a STEM-based course, and in particular one of the sections studied in the course, which requires a fairly good mathematical background of students - operating with fractions, solving systems of equations, matrix calculation, etc.
POSSIBILITIES OF COMPLEX OBJECTIVATION OF TECHNICAL ELEMENTS COMBINATION FROM MARTIAL ARTS WITH THE HELP OF MVN XSENS
Authors: Deliu Robert , Dreve Adina , Stoica Marius
Published: February 2023

The wish to have a training program as efficient as possible I had both as a sportsman, but especially as a coach, after gathering knowledge by graduating higher studies in the physical education and sports field.
Knowing the Romanian kickboxing trainings level, I considered that by using modern technology applicable to motor activities, I can try to bring an improvement to the discipline and possible with an impact to the other martial arts (training, selection).
The National Research Institute for Sport, with more than 50 years of experience in research in the sports field and in supporting the national teams by offering scientific assistance, having such equipment and a remarkable benevolence, was willing to help such plan like this. After analyzing the initial idea, was chosen a measuring instrument adequate for this study: Xsens MVN.
Xsens MVN consists of hardware and software, each adapting to user requirements.
The hardware used in the studio was the wireless version, MVN Link. There are 17 motion tracking sensors containing 3D gyroscopes, accelerometers and 3D magnetometers.
The software part is the key element of the MVN. With the information received from sensors correlated with the algorithms and models mentioned above, it builds an avatar of the subject in a 3D system and allowing to track speeds and the positions in space of the sensors.
Through this study we wished to link the methodical indications from the specialty literature and concrete technical executions, proving that the biomechanics elements can be objectively evaluated.
We chose some of the most used kickboxing techniques and planned to monitor them with our equipment in order to objectify them and extract information useful for trainings.
Likewise, the research is meant to be a step for future studies, even in other sports disciplines and to encourage the use of technology in sports training.
DIGITAL PLATFORM FOR THE PERFORMANCE GROWTH OF EDUCATION IN GEODETIC ENGINEERING FIELD
Authors: Bofu Constantin , Hogas Horatiu iulian , Lupu Iuliana gabriela , Chirila Constantin , Crenganis Loredana mariana
Published: February 2023

Current accelerated digitalization process of society and technological developments in all technical areas have determined the academic institutions to adapt their education system to these challenges. Numerous studies have shown evidence of increased interest to learn when digital devices are incorporated into the learning environment. Therefore, in this paper we proposed a functional model of digital platform to be used by the geodetic students. In order to improve the university education process and performance, the digital platform should include certain elements such as: study field presentation, ability to adapt to latest technological developments, attracting of private sector in educational process through different methods and standardization of evaluation process. A digital platform must provide answers to essentials questions or requirements of students. The proposed digital platform is based on two framework schemes which refer to the promotion faculty, admission and educational process content. For admission, the university should take account three candidate categories (decided on certain study field, those who want an engineering specialization and those undecided).Hence, for all three categories the digital platform should provide the certain aspects as following: perspective on labour market of chosen specialization and information regarding the study field (courses name, brief description of topics courses, competences etc.).The educational process content is addressed to the students attended to each study program and must be conceived and presented based on the professional and transversal competences set. The information on the digital platform must be organized in a logical sequence and must allow to users to get all information they needed.
SPECIALTIES OF DISTANCE LEARNING FOREIGN LANGUAGE COMMUNICATION OF STUDENTS OF A LINGUISTIC UNIVERSITY
Authors: Yelashkina Natalya , Zagraiskaya Yulia
Published: February 2023

The relevance of this article is due to the need to increase the effectiveness of distance learning in foreign language communication, which is now widely recognized in our country and abroad. Distance learning with the help of the latest information technologies provides almost unlimited possibilities of using a personal computer in various spheres of human activity. In linguistic / correspondence education, the need for intensive implementation of the remote mode of interaction between the subjects of the educational process is due to both socio-economic and subject-matter factors. Studying foreign languages with the help of telecommunications makes any student solve lot of problems. The authors consider it expedient, within the framework of the article concerning the system of professional training of students, to focus on the process of integrative use of distance and correspondence forms of student learning. Despite the differences, the process of integration of correspondence and distance learning forms (in comparison with the interaction "distance learning - full-time education") is simplified. This is due to the fact that both distance and correspondence learning have a number of similar features that can contribute to their smooth and effortless interaction and interpenetration in organizational and content plans. This is provoked by the objective difficulties of forming communicative competence of correspondence students in all the full manifestation of its components. distance learning is an effective form that allows to significantly increase the efficiency of the system of distance learning of students in foreign language communication. It is necessary to intensively explore the potential of such an integrative form, to develop, within the framework of this theory, certain concepts and technologies that contribute to the optimization of students' educational activities.
Konsekwencje wojny rosyjsko-ukraińskiej dla gospodarki światowej
Authors: Frankowski Paweł
Published: February 2023

Russia’s aggression against Ukraine in February 2022 meant changes in the global economy related to the need to rebuild supply chains. These changes affect the Ukrainian economy and the economies of countries for which supplies from Ukraine and Russia were part of international trade. However, predictions of a collapse of the Russian economy as a result of the sanctions do not predict a quick end to the conflict, and the economic factor is crucial to Ukraine’s future.
Canada’s Temporary Labor Migration Policy: The Case of Mexican Seasonal Agricultural Workers
Authors: Soroka Tomasz
Published: February 2023

The article analyzes Canadian temporary foreign worker migration policies through the prism of Canada’s Seasonal Agricultural Worker Program (SAWP), one of the largest and oldest seasonal worker programs in Canada’s postwar immigration policies, whose main participants are seasonal farmworker migrants from Mexico. The article outlines the premises of Canadian labor migration policies and presents a brief history of Mexican migrations to Canada. Most importantly, however, it focuses on the functioning of SAWP, presenting the program’s positive impact as well as its shortages and failures through the lens of experiences of its Mexican participants. The summary of this text proposes certain reforms and changes to SAWP that might help eliminate some of the program’s deficiencies.
Plan Colombia: Towards New US State Building Policy
Authors: Fatalski Marcin
Published: February 2023

The article discusses the evolution of US policy toward the Colombian crisis. The policy and Plan Colombia are studied in the context of US nation building and state building policy. The article shows whether Plan Colombia referred to previous experiences of US nation or state building policy and how that policy evolved. The case study of Colombia allows for a general reflection on the evolution of US policy after the Cold War.
Worker Experience and Donor Heterogeneity: The Impact of Charitable Workers on Donors’ Blood Donation Decisions
Authors: Lin Wilson , Lu Susan Feng , Sun Tianshu
Published: February 2023

Problem definition: We ask whether and how a charitable organization’s front-line staff members can be effectively positioned to encourage donors to donate more (in compliance with the eligibility rules) during their in-person interactions. Academic/practical relevance: Specifically, we consider how charitable organizations can use microlevel data on worker-donor interactions to improve donation outcomes, via understanding of workers’ experiences and donors’ characteristics. Methodology: Using a unique data set at the worker-donor interaction level, we analyze the role of nurses’ experiences in driving charitable productivity and explore the downstream effects of the donation volume outcome. Results: We find that the effect of the charitable worker on charitable productivity strongly depends on the worker’s experiences that entail sharing knowledge about a donor’s donation options, rather than the worker’s experiences that are primarily focused on collecting donations. Moreover, worker experience can encourage donors that have lower self-efficacy over performing their donation to choose higher donation volumes. A worker’s experience with donors with lower self-efficacy furthermore benefits charitable productivity when interacting with those donors. Higher donations induced by an experienced worker from the previous session are correlated with higher donation volumes in the focal session if the donor returns to donate. Managerial implications: When taking the insights on staff-donor interactions into account, improved matching between workers and donors can provide economically significant benefits for the blood bank. Understanding worker experience in the staff-donor interactions and leveraging big data in staffing decisions can help charitable organizations improve their productivity simply from the personnel end.

Funding: W. Lin acknowledges the support of the Marshall Fellowship at the USC Marshall School of Business. S. F. Lu acknowledges the support of the Gerald Lyles Rising Star fund at Purdue. T. Sun acknowledges the support of an Adobe Data Science Award and an iORB grant at the USC Marshall School of Business.

Supplemental Material: The online appendices are available at https://doi.org/10.1287/msom.2023.1198 .
The learning preferences of aspiring orthopaedic surgeons in the UK
Authors: Shanmuganathan Kanatheepan , Liang Kaifeng , Vignaraja Vikramman , Galloway Richard , Chandrakumar Charmilie
Published: February 2023

Background/aims

The workload of orthopaedic trainees is rapidly increasing at the expense of training. Trainees are expected to assimilate large quantities of information efficiently. This prospective cohort study explores the learning styles, resource preferences and educational needs of aspiring orthopaedic trainees.

Method

A 21-item questionnaire was distributed to delegates of an orthopaedic teaching series. Data were obtained pertaining to demographics, visual, aural, read/write and kinaesthetic learning styles, study materials used and teaching exposure.

Results

Participants had a strong preference for visual (48.0%) and kinaesthetic (43.0%) learning modalities. Most participants prepared for written exams using online question banks (85.9%), clinical exams using question banks (37.5%) and discussion with colleagues (27.3%), and surgical procedures intraoperatively (43.8%). Only 12.4% of participants felt the teaching they received was consistently adapted to their visual, aural, read/write or kinaesthetic learning preference.

Conclusions

The surgical landscape is rapidly changing. It is vital that trainers take into consideration how budding orthopaedic surgeons learn and make the relevant accommodations, to ensure optimal learning.
The contribution of generalist community nursing to palliative care: a retrospective case note review
Authors: Robinson Jackie , Frey Rosemary , Gibbs Gillian , Hayden Meenu , Gott Merryn
Published: February 2023

Background: There is a paucity of evidence regarding the contribution of generalist community nursing to palliative care. Aim: The aim of this study was to identity the proportion of patients referred to a generalist community nursing service who meet the criteria for palliative care need and explore key aspects of their management. Methods: A retrospective case note review of people known to a generalist community nursing service was undertaken to identify people with palliative care needs. Results: Of the 1284 people enrolled in the community nursing service, 21.1% (n=271) were identified as having palliative care needs, of which most (82.7%; n=224) had a non-cancer illness. However, palliative care need was largely unrecognised in the referrals to community nursing and there was little evidence of a palliative approach being integrated into nursing care. Conclusions: Nursing has a significant role in the provision of generalist palliative care in the community. However, research is needed to identify the barriers community nurses experience identifying needs and providing palliative care. A focus on education and support in implementing screening tools, which may assist community nurses in recognising needs and delivering palliative in the generalist setting, is urgently needed.
Enhancing Cloud Forensic Investigation System in Distributed Cloud Computing Using DK-CP-ECC Algorithm and EK-ANFIS
Authors: Nasreen Shaiqa , Mir Ajaz Hussain
Published: February 2023

The investigation as well as recovery of data gathered as of digital devices associated with computer crime is involved in Digital Forensics (DF). In a distributed Cloud Server (CS), DF investigation is more complicated (during collecting, preserving, and reporting the evidence) as well as insecure during gathering evidence as of the cloud sources. Centered on the DF investigation system, numerous works were performed. However, lots of challenges still remain that bring about cybercrime. The work developed a robust cloud forensic investigation system centered upon distributed Cloud Computing (CC) for conquering the challenges. It is framed into the ‘3’ phase (i.e.) originally, Group Key Generation (GKG) phase that enables the authorized user to upload or download the evidence for maintaining the evidence’s trustworthiness. Distributed Key Cipher Policy Elliptic Curve Cryptography (DK-CP-ECC) algorithm performed the Secure Data Transfer (SDT) phase. It aids in maintaining the evidence’s privacy together with confidentiality. Exponential Membership Function Adaptive Neuro-Fuzzy Interference System (EK-ANFIS) carries out the CS selection with the aid of a deer hunting genetic algorithm that evades the reporting issues and renders secure evidence storage. 97% Security Level (SL) is obtained by the proposed work that is better analogized to the prevailing frameworks.
A Universal Design for an Adaptive Context-Aware Mobile Cloud Learning Framework Using Machine Learning
Authors: Awwad Aiman M. Ayyal
Published: February 2023

Mobile learning is becoming more and more popular today. It gained popularity recently due to the COVID-19 pandemic restrictions in 2020. However, to provide learners with appropriate educational materials in such a mobile environment, the characteristics and context of the learners must be considered. Therefore, in this paper, we propose a framework for providing an adaptive context-aware learning process considering a combination of student learning models and principles of Universal Design for Learning (UDL). The proposed system consists of components capable of detecting changes in context and adapting the way the application responds and behaves. The framework uses a machine-learning algorithm to predict learners’ characteristics and follow UDL principles to deliver enriched user experience and location-aware content and activities. An online survey was conducted with 20 undergraduate students. We analyzed their levels of satisfaction with the proposed m-learning system. From the analyzed data, we noticed that the average rating values are close to 4.5, which indicates that the proposed m-learning system complies with UDL principles and provides an adaptive and localized learning environment, thus enhancing the efficiency of the learning process and experiences. The study also investigated the impact of factors (i.e., noise level, physical activity, and location) on learners’ concentration towards the learning process. The results show that these factors have a significant impact on the learner’s concentration level.
Uji selektivitas ekstrak etil asetat (EtOAc) biji putat air (Barringtonia racemosa) terhadap keong mas (Pomacea canaliculata) dan ikan lele lokal (Clarias batrachus)
Authors: Musman Musri , Karina Sofyatuddin , Melanie Kavinta
Published: February 2023

Abstract. This study examined the selectivity of ethyl acetate extract of putat air (Barringtonia racemosa) in controlling Pomacea canaliculata compared to local catfish (Clarias batrachus). Five concentration of putat air (25, 50, 100, 200, and 400 ppm) with triplicate were tested in this study. The powder of putat air kernel was extracted through increasing the polarity of solvent, i.e. dichloromethane, ethyl acetate, and methanol. The mortality data were analyzed using Trimmed Spearman Karber (TSK) program version 1.5. The selectivity value was calculated based on LC50 values obtained from TSK. The results showed that (1) LC50 values of putat air's kernel extract of putat air to P. canaliculata and C. batrachus were 25.00 and 87.06 ppm, respectively, (2) the selectivity value of putat air's kernel extract as molluscicide of P. canaliculata was 3.48. Key words: Pomacea canaliculata, local catfish (Clarias batrachus), putat air (Barringtonia racemosa).
Studi sebaran sedimen berdasarkan ukuran butir di perairan Kuala Gigieng, Kabupaten Aceh Besar, Provinsi Aceh
Authors: Purnawan Syahrul , Setiawan Ichsan , M Marwantim
Published: February 2023

Abstract. The objective of the present study was to evaluate the distribution of sediments in the estuary of Kuala Gigieng. The study was done on Mei to June 2011 and the sampling was conducted in three areas of estuary i.e. downestuarine, middle-estuarine and river section of Kuala Gigieng. The wet sieving analysis method was used in this study. The data was then weighed and the percentage was calculated and classified based on the Wentworth scale. The results showed that (1) the mean grain size of sediment of each area was 0.50 mm, 0.65 mm and 0.56 mm and the characteristically, the sediment distribution was consisted of medium sand 63.42%, fine sand 23.40%, coarse sand 5.59%, very fine sand-mud 4.13% and pebble 0.17%. The currents speed were 0.25 m/s, 0.23 m/s and 0.19 m/s. The current speed has influenced the sediment distribution where small grains were mostly found at higher current speed. Key words. Estuary, currents and sediment distribution
Keragaman makrozoobenthos di perairan Kuala Gigieng Kabupaten Aceh Besar
Authors: Fadli Nur , Setiawan Ichsan , Fadhilah Nurul
Published: February 2023

Abstract. The objective of present study was to study the diversity of macrozoobenthos in Kuala Gigieng estuary, Aceh Besar. The study was conducted in June 2011. The random sampling method was used to determine the area and sampling points based on tidal activities. Samples were taken with the Eckmann grab, then identified at Marine Biological Laboratory of Marine Science Department. The results showed that there were three class of macrozoobenhos (Malacostraca, Gastropoda, and bivalves) within 12 species of makrozoobenthos occured in Kuala Gigieng. The Shannon-Wienner diversity index (H') at high tide, mean sea level, and low tide were 1.26, 1.446, and 1.892, respectively, and it was categorized as low level. Keywords. Diversity, Makcrozoobenthos, Gigieng estuary
Pengaruh ENSO (El Niño and Southern Oscillation) terhadap transpor massa air laut di Selat Malaka
Authors: M Muhammad , Rizal Syamsul , M. Affan Junaidi
Published: February 2023

Abstract. This research examines the influence of ENSO (El Niño and Southern Oscillation) in the Malacca Strait with the southern oscillation index using the Pacific Ocean in determining the condition of Normal, El Niño and La Nina as the analysis of mass transpor of sea water, sea surface elevation and the density of the sea. The research methods using the Navier-Stokes equations with force generating tides, winds from the National Centers for Environmental Prediction (NCEP) Year 1980- 007, salinity(Levitus and Boyer, 1994a) and temperature (Levitus and Boyer, 1994b). Equations of motion of the sea water were modeled with the model of Hamburg Shelf Ocean Model (HAMSOM). The results show that the transport in northwestern part of the Malacca Strait is lower, but in the southeastern part is stronger compared to that of in Normal and La Nina events. While in Sea Level Elevation at El Niño event is lower compared to that of in Normal and La Nina events. For sea surface density, the density values are 18.5 s/d 20.5 kg/m3 while for the later 30-50 m, the values are 19-21 kg/m3. Sea surface density and density for layer 30-50 m in th southeastern part of Malacca Strait for El Niño events are higher than that of in normal and La Nina event. Key words: Sea level elevation, sea density and Hamsom model
Komunitas fitoplankton di perairan Danau Laut Tawar Kabupaten Aceh Tengah, Provinsi Aceh
Authors: N Nurfadillah , Damar Ario , M. Adiwilaga Enan
Published: February 2023

Abstract. The aims of the present study was to evaluate community structure and biomass of phytoplankton based on the depth stratification in the waters of Lake Laut Tawar. Sampling was conducted during March and April 2010. The results showed that 43 species of phytoplankton belonging to five classes were found in Lake Laut tawar. The most common class was Chlorophyceae with 20 genera, followed by Bacillariophyceae (diatoms) by 9 genera, Cyanophyceae (10 genera), Dinophyceae (2 genera), and Euglenophyceae (2 genera). The highest species composition was found at II with 15 m depth (24 genera), while the highest abundance of phytoplankton was occured at station with 10 depth (155600 cells/l), while the lowest abundance was obtained at 15 depth (12745 cells/l). Overall the phytoplankton population in Lake Laut Tawar was dominated by Bacillarophyceae. In addition, the diversity index of phytoplankton was in moderate level (2.34), while the evenness index was ranged from 0.43 to 0.87, indicate the distribution of the individuals of each species was varied, however there was no predominant species detected.Keywords. Phytoplankton, structure community, Laut Tawar Lake.
Analisis subsidi bahan bakar minyak (BBM) solar bagi nelayan di Kabupaten Aceh Besar, Provinsi Aceh
Authors: A. Muchlisin Zainal , Fadli Nur , M. Nasution Arifsyah , Rika Astuti Rika Astuti , M Marzuki
Published: February 2023

Abstract. Fuel is one of important components in fishing activity. The objectives of this research were to analyze the need and the receiver of fuel subsidy in Aceh Besar t as well as to analyze the problems that faced by fisherman in Aceh Besar district. The survey was done on June-August 2012 in five sub-district in Aceh Besar namely: (1) Baitussalam, (2) Mesjid Raya, (3) Leupung (4) Lhoknga dan (5) Mesjid Raya. The result shown that the average cost of one trip of fishing activities in Aceh Besar were Rp700.000. The lowest operational cost was found in Seulimum (Rp96.200 per trip) and the highest was found in Baitussalam sub-district (Rp1, 793,710 per trip). Fuel was the biggest cost for fishing activity; it was ranged 40%-73% with average 57.9%. The lowest proportion of fuel consumption was found in Baitussalam sub-district and the highest was found in Lhoknga sub-district. In average, the fisherman’s fuel consumption was 1,237L. per month; with total subsidy was Rp 5,824,737 per fisherman per month. The profit will be decreased up to 89.5% if there was no fuel subsidy. In addition, the result also shown that the fisherman in Aceh Besar did not have any skill to generate their alternative income. As the consequence, in the future there is a need to develop programs to generate the alternative livelihood for Aceh Besar fisherman as well as their family.Keywords. Capture fishery, conservation, budget allocation, and climate changes
Uji selektivitas fraksi Rf < 0,5 ekstrak MeOH biji putat air (Barringtonia racemosa) terhadap ikan mujair (Oreochromis mossambicus)
Authors: Musman Musri , S Sofia , W Perdana Adli
Published: February 2023

Abstract. The objective of the present study was to evaluate the selectivity of the Rf 0.5 fraction of MeOH extract of putat air kernels (Barringtonia racemosa) on golden snail (Pomacea canaliculata) and tilapia (Oreochromis mossambicus). The research was conducted on November 2011 to February 2012 at Chemical Laboratory of Teacher Training and Education Facultyand Marine Chemical Laboratory of Coordinatorate of Marine and Fisheries of Syiah Kuala University. Thin-layer chromatography was used as the separation technique towards component compounds in the extract samples. The research was used five levels concentration of Rf 0.5 fraction of MeOH solution (20 ppm, 40 ppm, 60 ppm, 80 ppm, 100 ppm) with three repetitions. Mortality rates of golden snails and tilapia were detected when they were exposure to Rf 0.5 fraction of MeOH extract of B. racemosa kernels. The data were analyzed by Probit, and selectivity value (S) was calculated by Feng and Wang formula. The results revealed that Rf 0.5 fraction of MeOH extract of putat air kernels was selective to golden apple snails.Key words. Thin-layer chromatography, mortality, Probit, and moluscida
Suplementasi β-glucan dari ragi roti (Saccharomyces cerevisiae) dalam pakan terhadap aktivitas fagositosis, aktivitas NBT, total protein plasma dan aktivitas aglutinasi darah ikan nila (Orechromis niloticus)
Authors: Dwi Hastuti Sri
Published: February 2023

Abstract. Tilapia is an important fisheries comodity which intesively farmed in Indonesia. However, an intensive farming system of aquatic organism often lead to disease outbreak. Ones the disease emerged, it will be difficult to combat. The curing method by using antibiotics in aquatic organism will bring negative impacts, such as causing bacteria resistance and decline of aquatic environments. Therefore control of disease in aquatic organism should be done through preventive methods such as the use of β-glucan from baker’s yeast (Saccharomyces cerevisiae). It is widely known that yeast’ cell wall contain of immunostimulant substance namely β-glucan. This research was aimed to find the effect of different dose of β-glucan in diet toward the phagocytic activity, respiratory burst which is indicated by Nitroblue Tetrazolium (NBT) activity, total of protein plasm and agglutination activity of tilapia blood. Method used in this study was experiment by complete random design using five treatments triplicate. Those treatments were β-glucan 0; 2,5; 5; 7,5 and 10 ppmkg-1 diet. Result showed that the different dose of β-glucan in diet gave a significantly effect on the phagocytic activity and total of protein plasm, but not on respiratory burst (NBT activity). The highest phagocytic activity occured in treatment E (β-glucan 10 ppmkg-1 diet) with the value of phagocytic activity was 37,67%, whereas the highest of total of protein plasm was occured in treatment B (β-glucan 2,5 ppmkg-1 diet) with the value of 123,58 mgml-1. Keywords : Baker’s yeast, β-glucan, phagocytic and agglutination activity, NBT activity, total of protein plasm
Komposisi ikan karang di lokasi transplantasi karang di Pulau Rubiah, Kota Sabang, Aceh
Authors: Fadli Nur , N Aidia , M Muhammad , Rudi Edi
Published: February 2023

Abstract-. Coral transplantation is one of the techniques to rehabilitate the damaged coral reefs. The objective of this study is to observe the composition of reef fishes in the coral transplantation location in Rubiah Island, Sabang. The study was conducted in February 2011. Some of reef fishes Family were found in coral transplantation location (16 Family at 3 meters and 14 Family at 10 meters). The Family of Acanthuridae, Chaetodontidae, Pomacentridae Scaridae and Labridae were found in 3 meters. Reef fish families that dominated at depths of 10 meters were the Family of Acanthuridae, Pomacentridae Scaridae and Chaetodontidae. There are 40 reef fish species found in this study (34 species in 3 m and 38 species in 10m). Some reef fishes that were found in the transplantation area suggested that coral reefs rehabilitated using the technique of transplantation can improve its function as habitat for reef fish.Keywords: Transplantation, coral reefs, Rubiah Island
Analisis subsidi perikanan non BBM di Kabupaten Aceh Besar, Provinsi Aceh
Authors: A. Muchlisin Zainal , Fadli Nur , M. Nasution Arifsyah , Astuti Rika , Marzuki Marzuki , Musni Darmawi
Published: February 2023

Abstract. The objective of the present study was to analyze the budgetary trends and the effectiveness of fisheries subsidies in Aceh Besar district. The literature and survey methods were utilized in this study. The secondary data of Aceh Besar’s budget documents in the period of 2010-2012 and key person interviews with fishermen leaders were conducted to analysis the subsidy trend and fishermen perception. The data was collected in May through July 2012. The results showed the budget allocation to the fisheries sector were increased from year to year, in 2010 the total budget for the fisheries sector was Rp1, 9 billions (equivalent to 0.34% of total buget or 1.40% of the development budget allocation/indirect consumption), in it was increased to Rp2, 9 billion in 2011 (or 0.42% of total budget or 1.47% of the development budget allocation), then increased sharply in 2012 to Rp9, 2 billion (an increase of over 630%) from the previous year, equivalent to 1.11% of the total budget. In 2010, the proportion of subsidies were given mostly for aquaculture sub-sector, which reached 84% of the total budget that was managed by the Department of Marine and Fisheries of Aceh Besar, whereas in 2011 the proportion of subsidies occurred balance between aquaculture and capture fishery sub sectors. However, in 2012 most of the budget DKP Aceh Besar (63%) was allocated to the capture fishery sub-sector. The results of the study showed that fisheries subsidies by the Government of Aceh Besar district especially in the last two years have not yet met the criteria of sustainable fisheries subsidies. Keywords: fisheries subsidies, budget allocation, and Aceh Besar
Karakter mulut dan variasi struktur gigi pada familia Bagridae yang tertangkap di Sungai Serayu Kabupaten Banyumas
Authors: Bhagawati Dian , Nadjmi Abulias Muh. , Amuranto Adi
Published: February 2023

Abstract. The objective of the present study was to evaluate mouth character and tooth structure variations of Bagridae. The sampling was conducted on February to July 2012 at Serayu River Banyumas, the sampling was done four times with two week intervals using casting nets and gill nets. A total of three species Bagridae, namely Mystus gulio, Mystus nigriceps and Hemibagrus nemurus were recorded during the study. The results showed that there were no variation on mouth and dental structure among species. Thus, theese characters could not be used to discriminate species among these species.Keywords. Mouth character, tooth structure variations, Bagridae, River Serayu
Distribusi kecepatan arus pasang surut pada muson peralihan barat-timur terkait hasil tangkapan ikan pelagis kecil di perairan Spermonde
Authors: Rasyid Jalil Abdul
Published: February 2023

Abstract. Indonesian waters connect the Pacific Ocean and the Indian Ocean. These waters are also highly influenced by the monsoonal climate. Current is a very important parameter in the marine environment and affect both directly and indirectly the marine environment. A study has been done in the waters of Spermonde Archipelago in Makassar Strait to develop a model of relationship between tidal current velocities and capture of small pelagic fishes at transition between west and east moonsoonal season. Insitu field data were collected for 3 (three) months, from April to June 2009. Besides that, this study also used a two-year image data (acquired from October 2007 to June 2009). Study sites were deployed in areas of fishing base of small pelagic fishes within the waters of Spermonde Archipelago, Pangkep District, South Sulawesi, particularly in areas where purse seine gears were operated by the fishermen. Distribution of current parameters, depth, wind direction and velocity, and tidal data were depicted horizontally using Surfer v 7.0 software package. Meanwhile, Surface Modelling System v 8.1. (SMS v 8.1) program was used to make prediction of the movement pattern of the surface current. Results of the analysis of current movement patterns when the waters were approaching hightide showed that water mass movement from southern region (Flores Sea) was diverted and passed through the Spermonde Archipelago to the coastline of Pangkep Regency. In contrary, when the waters were approaching ebb tide, the current from the western coast of Pangkep Regency passed the Spermonde Archipelago and diverted to the Flores Sea again. Analysis of current velocity indicated that higher current ( 0.1 m s-1) was found in offshore and tend to decrease below 0.1 m s-1 as the current passing the waters of Spermonde Archipelago. Optimal capture was obtained up to the current velocity of 0.032 m s-1 i.e. 187.9 kg, and tend to decrease with increasing current velocity. At the highest current velocity, that is 0.216 m s-1, the capture was 112 kg.
Pertumbuhan dan kelangsungan hidup larva ikan lele dumbo (Clarias gariepinus) pada konsentrasi tepung daun jaloh (Salix tetrasperma Roxb) yang berbeda dalam pakan
Authors: Dara Dewi Cut , A. Muchlisin Zainal , . Sugito
Published: February 2023

Abstract. The objective of the present study was to evaluate the possibility of jaloh leaf powders as alternative raw material for the formulated diet ofAfrican catfish (Clarias gariepinus). Four concentrations of jaloh leaf powders (0%, 5%, 10% and 15%) were examined in this study. The experimental fish were fed three times a day (on 08.00 am, 12.00 am and 17.00 pm) with feeding ration of 5% of body weight and the fish was reared for 35 days. The ANOVA test showed that the different concentration of jaloh leaf powders gave a significantly effect on growth performance of African catfish larvae (P0,05) but did not give significantly effect on the survival rate (P0,05). The Duncans test showed that the higher survival rate and growth performance were found in the control (without jaloh leaf powders). Therefore it is concluded that the jaloh leaf powders is not suitable as alternativerows material for African catfish diet.Key words: Protein; Carbohydrate; Catfish; Alternative feed Abstrak. Penelitian ini bertujuan untuk mengevaluasi kemungkinan pemanfaatan  tepung daun jaloh (S. tetrasperma) sebagai bahan baku alternatif untuk pakan ikan lele(C. gariepinus). Dalam penelitian ini telah diuji beberapa tingkat proporsi tepung daun jaloh yaitu (0%, 5%, 10%, dan 15%) .Pemberian pakan dilakukan tiga kali sehari, yaitu pada pukul 08.00, 12.00 dan 17.00 WIB,sebanyak5%dari berat bobot tubuhnyaselama 35 hari. Hasil uji ANOVA menunjukkan bahwa pemberian tepung daun jaloh memberikan pengaruh nyata (P0,05) terhadap pertumbuhan mutlak dan pertumbuhan harian benih ikan lele dumbo (P0,05), namun tidak berpengaruh nyata terhadap kelangsungan hidup (P0,05). Uji lanjut Duncan’s  menunjukkan bahwa perlakuan kontrol (tanpa daun jaloh) dalam pakan memberikan hasil terbaik dari segi pertumbuhan mutlak, pertumbuhan harian dan kelangsungan hidup. Oleh karena itu dapat disimpulkan tepung daun jaloh kurang sesuai sebagai bahan baku alternatif dalam pakan ikan lele dumbo.Kata kunci: Protein; Karbohidrat; Ikan lele; Pakan alternatif
Aplikasi madu untuk pengarahan jenis kelamin pada ikan nila (Oreochromis niloticus)
Authors: Adhita Damayanti Ayu , Sutresna Wayan , . Wildan
Published: February 2023

Abstract. The objective of this research was to found the optimum concentration of honey for sex reversal of male tilapia.   The  non factorial completely randomize design was used for this research, the factor that has been examined were honey concentrations at level of  0%, 0.05 %, 0.1%, 0.15 % and 0.2 % for 24 hours submersion. The data were subjected to Anova test and followed by BNT test. The results showed that the differences of honey concentrations was significantly influence the   percentage of male tilapia (P0.05), but did not affect significantly on the survival rates. (P0.05). In general, the percentage of male tilapia was increased with increasing the honey concentrations, where the higher percentage of male was found at 0.2 % (81.43%), and it was different significantly with other concentrations. It is concluded that 0.2% of honey is  suitable for male tilapia sex reversal.Keywords: Honey; Sex reversal; Tilapia (Oreochromis niloticus); Male; SubmersionAbstrak.   Penelitian ini bertujuan untuk  mengetahui konsentrasi madu yang efektif menghasilkan ikan nila (O. niloticus)  kelamin jantan yang paling tinggi. Rancangan Acak Lengkap (RAL) non faktorial digunakan dalam penelitian ini, faktor yang diuji adalah perbedaan konsentrasi madu, yaitu 0 %(kontrol), 0,05 %, 0,1 %, 0,15 % dan 0,2% ppt selama 24 jam perendaman. Hasil uji ANOVA menunjukkan bahwa perbedaan konsentrasi madu berpengaruh nyata terhiadap persentase nila jantan yang dihasilkan (P0,05), namun tidak berpengaruh nyata terhadap kelulushidupan baik selama perendaman maupun pemeliharaan (P0,05). Secara umum terlihat persentase kelamin jantan meningkat seiring dengan peningkatan konsentrasi madu dalam larutan perendam. Uji lanjut menggunakan BNJ memperlihatkan bahwa persentase nila jantan tertinggi dijumpai pada  konsentrasi 0,2% (81,43%±0,23), nilai ini berbeda nyata dengan perlakuan lainnya. Dengan demikian dapat disimpulkan bahwa konsentrasi madu 0,2% sesuai dan efektif untuk pengarahan jenis kelamin jantan pada ikan nila.Kata kunci: Madu;  Pengarahan jenis kelamin; Nila(Oreochromis niloticus); Jantan; Perendaman
Studi pendahuluan klasifikasi ukuran butir sedimen di Danau Laut Tawar, Takengon, Kabupaten Aceh Tengah, Provinsi Aceh
Authors: Setiawan Ichsan
Published: February 2023

Abstract. The purpose of this research was to examine the sediment grains size in Lake Laut Tawar. This research was done during Mei to June 2012. Five sampling stationse were determined  i.e. Toweran, Bintang, Klitu, Boom and Ujung Mumpar. Dry sieving analysis method was used in this study with different diameter stage sediment sieve  such as 4.75 mm, 1.7 mm, 250 µm,  850 µm, 150 µm, 0.2 µm, and 0.063 µm. The data was then weighed and calculated for percentages. The results showed that the sediment in Toweran station was dominated by pebble and medium sand; in Bintang station was dominated by pebble and coarse sand; in Klitu station was dominated by pebble and medium sand; in Boom station was dominated of colloid and remaining shells; and in Ujung Mumpar station was dominated of pebble and coarse sand. Generally, the sedimen type was pebble and coarse sand.Keywords: The dry sieving method; Stage sieve; Sediment grain size Abstrak. Penelitian ini bertujuan untuk mengetahui ukuran butir sedimen di Danau Laut Tawar. Penelitian berlangsung pada Bulan Mei sampai Juni 2012. Lokasi sampling terbagi menajdi beberapa stasiun;  Stasiun Toweran, Bintang, Klitu, Boom dan Ujung Mumpar. Sampel sedimen disaring dengan ayakan bertingkat dengan diameter  4,75 mm, 1,7 mm, 250 µm,  850 µm, 150 µm, 0,2 µm, 0,063 µm. Persentase berat fraksi sedimen dihitung berdasarkan saringan sedimen bertingkat. Hasil penelitian menunjukkan bahwa sedimen di Stasiun Toweran dominan kerakal dan batu yang diikuti pasir sedang, di Stasiun Bintang dominan kerakal dan batu yang diikuti pasir sangat kasar, di Stasiun Klitu dominan kerakal dan batu yang diikuti pasir sedang, di Stasiun Boom dominan koloid yang diikuti sisa kerang-kerangan dan di Stasiun Ujung Mumpar dominan kerakal dan batu yang diikuti pasir sangat kasar. Secara umum ukuran sedimen di Danau laut Tawar adalah kerakal dan pasir sangat kasar.Kata kunci : Metode ayak kering; Saringan bertingkat; Ukuran butir sedimen
Daya dukung perairan Pulau Liukang Loe untuk aktivitas ekowisata bahari
Authors: Arhan Rajab Muhammad , Fahruddin Achmad , Setyobudiandi Isdradjad
Published: February 2023

Abstract.The purpose of the studywas to assessthe carrying capacity of Liukang Loe Island for tourism activities. The mathematicallymethod of  the formulaDDK= K x Lp/Lt x Wt/Wp was utilized in the study Based on the result of the study and interpretation of satellite imagery, it was oblained three marine tourism activities on the Liukang Loe Island nemaly beach tourism of recreation , snorkeling and diving. Coastal tourism/recreation categories according to the total length area that utilized around 1.441 m can accommodate 56 people/day, snorkeling tourism around 24,65 ha can accommodate 986 people/day and diving tourism around 14,73 ha is able to accommodate 589 people/day. Thus thetotaltouristthat can fittothe overalltourism activityaround1,631 people/day.Keywords : Ecological Carrying Capacity, Marine Ecotourism, Liukang Loe Island. Abstrak. Penelitian ini bertujuan  untuk mengkaji daya dukung lingkungan untuk aktifitas wisata Pulau Liukang Loe. Adapun metode perhitungan daya dukung kawasan wisata bahari di Pulau Liukang Loe dilakukan secara matematis dengan rumus DDK= K x Lp/Lt x Wt/Wp.Berdasarkan hasil penelitian dan interpretasi citra satelit, diperoleh bahwa ada tiga aktivitas wisata bahari di Pulau Liukang Loe yakni wisata pantai kategori rekreasi, snorkling dan diving. Wisata pantai/rekreasi kategori sesuai dengan total panjang area yang dimanfaatkan sebesar 1411 m dapat menampung wisatawan sebesar 56 orang/hari, wisata snorkling sebesar 24,65 ha mampu menampung wisatawan sebesar 986 orang/hari dan wisata selam (diving) sebesar 14,73 ha mampu menampung wisatawan sebesar 589 orang/hari. Dengan demikian total wisatawan yang dapat ditampung untuk keseluruhan aktivitas wisata sebesar 1.631 orang/hari.Kata kunci : Daya Dukung Ekologi, Ekowisata Bahari, Pulau Liukang Loe