bluuebunny/crossref_metadata_2025_split huggingface dataset:
The acquisition of L2 Hungariangrammar rules and the implicit-explicit debate
Authors: Gerits Hedwig , Branden Kris Van den 
Published: December 2022

Abstract
This study contributes to the explicit implicit debate by investigating to which extent adult learners of Hungarian develop knowledge of new grammar rules, and the proficiency to use them, through listening activities complemented with explicit grammar instruction or not.
In a quasi-experimental study, we compared the acquisition of three specific rules of Hungarian grammar by 80 Flemish adult students in two conditions. Both methods involved listening activities, but in one condition explicit rule explanation and practice was given and in the other one, meaningful activities were created without grammar explanation. The findings indicate that for teaching simple rules, compared to more complex grammar features, listening activities and exposure to comprehensible input have a significantly positive effect on grammar acquisition at the basic level. The explicit condition did not have an added beneficial effect. Exposure to L2 is the main driver of language development.
Social Justice in the Hospitality Industry – Better Pay Equals Better Employees and a Better Hotel
Authors: Dodds Rachel 
Published: December 2022

Abstract
It was July 2 and Trina White, the General Manager (GM) of the Parkside Hotel in Victoria, Canada was sitting in her office. She had just reviewed her occupancy figures and realized her costs for labour in her hotel needed to change in order to address the 89% turnover in staffing. In the past year, turnover had cost the hotel CA$202,000 in annual costs, which was close to what was spent on the overall marketing of the business. Victoria is a relatively small city with lots of hotels so it was hard to find staff but the cost to constantly train new staff was not feasible and something needed to change. Later that week, Trina would have a meeting with the shareholders of the hotel but what was she going to suggest?
Exploration of high-quality wood-producing trees on the Universitas Sumatera Utara (USU) Medan campus’s green space
Authors: Iswanto A H , Ginting I M , Rachmat H H , Hakim L , Sucipto T 
Published: December 2022

Abstract
Urban green space has various benefits, including as a conservation area for different plant species. As a green open space in Medan, the Universitas Sumatera Utara (USU) campus plays an important role. It performs a dual function as a means of conserving various types of trees that have multiple benefits, including as a producer of wood. Until now, information about the diversity of wood-producing tree species in the green space of the USU campus has not been found. This research was conducted to fill in the gaps in information regarding the diversity of wood-producing species in the green space of the USU campus, Medan. This research was conducted using a comprehensive tree inventory method by investigating the types, uses, and levels of wood strength found in various growing trees. The results showed that 19 tree species had durable class I to II (very durable and durable), 83 tree species had strength class I-III, 38 did not have durable class information, and 36 did not have strength class information. Two tree species that have an endangered status are Shorea parvifolia and Pterocarpus indicus.
Growth and exploitation rate of Dwarf Whipray (Brevitrygon heterura) landed from Tanjung Beringin, Serdang Bedagai Regency, North Sumatera Province
Authors: Manurung V R , Nababan M , Nasution S F P , Desrita  , Hasibuan J S , Husaini H 
Published: December 2022

Abstract
Stingrays are a group of fish that have high economic potential landed at TPI Tanjung Beringin. The dominant type of stingray landed at TPI Tanjung Beringin is the Dwarf Whipray (Brevitrygon heterura) or commonly called Tuka-Tuka by the local community. This research wa carried out during July and September of 2021 at TPI Tanjung Beringin, survey method with a census technique, namely a method by seeking various information and various facts regarding the biological aspects. This study aims to determine the growth and exploitation rate of the dwarf whipray. There were 82 dwarf whipray, which were then measured for length and weight. The results of the study concluded that dwarf whipray (Brevitrygon heterura) which landed in TPI Tanjung Beringin had a negative allometric growth pattern, namely length growth was greater than weight growth. The exploitation status of the dwarf whipray (Brevitrygon heterura) in the waters of the Malacca Strait is classified as overfishing.
Diversity of Hymenoptera in the Forest Area with Special Purpose (KHDTK) Aek Nauli, North Sumatra
Authors: Siahaan D A S , Berliani K , Pangaribuan R Y , Agustin D , Yulinar  , Mutiara F , Tarigan T S U B 
Published: December 2022

AbstractAs one of the four largest insect orders, Hymenoptera are important pollinators, parasitoids, and predators in the agricultural sector. The objective of this research was to study the diversity and abundance of hymenoptera in the Forest Area with Special Purpose/KHDTK Aek Nauli, Simalungun Regency, North Sumatra, Indonesia. The insect sampling was conducted during the day and night using yellow and light trap technique. The results obtained a total of 13 species of Hymenoptera consisting of 45 ind. The relative abundance was recorded from 2.22 to 22.22 with the highest abundance fromVespulasp (Vespidae) andSceliphron curvatum(Spechidae). The highest Importance Value Index (IVI) of Hymenoptera species was documented fromBrachymyrmexsp. (Formicidae) at 115.56 andPolybia fastidiosuscula(Vespidae) at 106.67. The Shannon’s diversity (H’) of Hymenoptera ranged between 0.89 and 1.83 among sites or categorized as low-to-medium level of biodiversity with an evenness index (E) from 0.64 to 1.00. This finding may be noted as our first attempt in documenting the beta diversity of insects in the forest region.
Forest fire analysis in Habinsaran Sector PT Toba Pulp Lestari industrial forest plantation area 2014 to 2021
Authors: Sidabukke S H , Rasyid Fahmi , Sianipar M , Panjaitan R H M , Aulin F R 
Published: December 2022

AbstractForest fires are one of the impacts of the increasing level of pressure on forest resources. Impacts related to forest or land fires are environmental damage and pollution, such as damage to flora and fauna, soil and water. Forest fires impact on the environment and biological ecosystems. The aim of becoming a reference for forest managers in their efforts to prevent forest fires at PT Toba Pulp Lestari. The analysis tested in this study is an analysis of a descriptive quantitative. The interview data contained in the questionnaire will be analyzed to determine the level of forest fires. The results obtained from this study are the age of plants that burn the most are 2-3 years old plants as much as 96 times. And the age of the plant that rarely burns is the plant that is 1-2 years old as much as 16 times. The most common factor causing forest fires from 2014 to 2021 was due to being burned by unknown people 187 times, followed by community farming activities for 31 times. The number of incidents and the area of forest fires occurred 221 times and an area of 163.23 ha. The highest period of fires occurred in February and June while the lowest occurred in December and January.
The carbon storage capacity of plantation forests and agroforestry pattern in South Sulawesi in the context of mitigating climate change
Authors: Paembonan S A , Soma A S , Rampisela D A 
Published: December 2022

Abstract
Comparison between the ability of carbon storage for various types of land use, both inside and outside forest areas, needs to be done in order to predict its ability to deal with climate change mitigation and adaptation programs in Indonesia. Local baseline data need to be known because each vegetation growth is strongly influenced by local environmental conditions. This study was conducted to compare the ability of carbon storage in pine plantations and agroforestry patterns at high altitudes. The research method was carried out purposively by determining sample plots that were considered representative of the type of land use. The results showed that there was a significant difference between the ability to store aboveground carbon between pine plantations of 86.80 tons/ha and agroforestry patterns of 56.14 tons/ha. Similarly, the comparison of the aboveground and underground carbon storage capacity, there was a significant difference, namely for pine stands 78.99% to 21.01%, while agroforestry pattern was 53.58% to 46.42%. Overall, both types of land use can be relied on to address climate change mitigation programs in Indonesia.
Analysis of the species and derived bamboo (Bambuceae) product in Berastagi, Kabanjahe and Tiga Panah of Karo District, North Sumatra
Authors: Samsuri  , Tampubolon Margaretta , Zaitunah Anita 
Published: December 2022

Abstract
Bamboo forests have ecological and economic functions. Bamboo is a commodity with bright prospects if it is widely developed in forestry. Bamboo standing stock and its derived product are important to be measured. The research aimed to identify bamboo species and analyze the benefit type of bamboo in North Sumatra Province. The sample analysis was carried out by analyzing the existing bamboo growing stock. The stratification interview technique with bamboo garden owners regarding the use of bamboo is based on local wisdom. A square plot of 50 m x 50 m was measured to get a standing stock of bamboo. The research found Gigantochloa sp. dominates the bamboo forest. The bamboo products are on a large scale, but they have not been sent out of town because they are very cheap and expensive in transportation. Many bamboo farmers have switched professions because of the low price of bamboo.
Identifying management strategies for the development of wildlife-based ecotourism: A study case of Sulawesi bear cuscus (Ailurops ursinus) inhabited the Educational Forest of Hasanuddin University, Maros
Authors: Putri A U B , Maulany R I , Achmad A 
Published: December 2022

Abstract
The educational forest of Hasanuddin University is intended to be developed as ecotourism spot with various physical and biological tourism attractions including bear cuscus (Ailurops ursinus). However, the concrete management strategies required have not been fully explored and examined. This research aimed to identify and formulate management strategies of wildlife-based tourism for bear cuscus in the area by examining bio-ecological of the species and analyzing community’s perceptions and attitudes towards bear cuscus and its conservation in the area. Data on the biology and ecology of A. ursinus and its habitat were gained from literatures while the perceptions were obtained directly from questionnaire distribution to all relevant stakeholders as respondents. SWOT analysis was used and further analyzed by using AHP (Analysis Hierarchy Process) to determine quadrants and priority levels. There were 11 strengths and 4 weaknesses found as internal factors and 5 opportunities and 3 threats for the external. The IFAS matrix score were 1.82 with the weighted total value of 3.29 and the weakness’ score of 1.47. For the EFAS matrix, the total opportunities score was 2.95 and the total threats score of 1.00. The high priority strategy to be implemented in the context of ecotourism management was located in Quadrant I which indicates that the opportunity for the bear cuscus' ecotourism is favorable.
Dynamics of environmental change and affecting factors in the Malili lake complex, South Sulawesi
Authors: Rahmawati  , Jompa J , Budimawan  , Arief A A 
Published: December 2022

Abstract
The exploitation of the Malili Lake Complex in South Sulawesi as a natural resource that is not accompanied by wisdom has caused various major problems, such as damage to natural resources, loss of resources and the emergence of various wastes, which result in a decrease in the quality of the environment.The objectives of this research are: to examine in depth the dynamics of the quality of the aquatic environment and the influencing factors. Testing of environmental parameters measured in the field using a tool, namely the Water Quality Checker. Parameter measurements carried out in the field during June-August 2021 by taking six observation stations, namely: Salonsa Beach, Dream Beach, Malili River, Karebbe River, Sorowako Pier and Timampu Pier. The condition of the waters in has been polluted by the presence of domestic and industrial waste and the activities of the people who live in the vicinity.
Potential analysis of Nipa Palm (Nypa Fruticans) in Singkil
Authors: Ibrahim T M , Julianti E , Supriana T , Delvian  
Published: December 2022

Abstract
Nipa palm (Nypa fruticans) is the plant that grouped in mangrove forest ecosystems which has a great economic potential when developed with a good strategy. The potential of nipa palm in Singkil has not been mapped properly, so that the objective of this research was to analyze the potential of nipa palm in Singkil. Data in this research were obtained directly from observations in the form of ground checks at several research locations and aerial photo data taken directly in the field using UAV vehicles. The results of data obtained through observation and documentation are then processed before being used to validate the results of image data processing. The use of UAV data provides a solution for mapping and monitoring nipa palm with high accuracy as well as a solution to the limited availability of nipa palm data in Singkil. Nipa palm was found spread along the estuary of the Lae Singkil River with total area 768.08 Ha. In the aerial photo taken in Kampong Pulosarok covering an area of 37.01 Ha, it was found that the land covering of nipa palm was 20.12 Ha or 54%. Whereas, in the aerial photo taken in Kampong Kilangan covering an area of 34.41 ha, it was found that the land covering of nipa palm was 22.16 ha or 64%. From the data, it can conclude that the nipa palm potential in Singkil is large.
Study of Vitality Change in Teak Community Forest Management (Case Study on Teak Community Forest in Natar Sub-district, South Lampung Regency, Lampung Province)
Authors: Nurcahyani Arum , Safe’i Rahmat , Bintoro Afif , Kaskoyo Hari 
Published: December 2022

Abstract
Community forests are forests that are owned, built and managed by the people. Community forests can provide direct and indirect benefits. So that the health of community forests has various cropping patterns that can be assessed from the parameters of forest health, namely vitality. One of the plants that is in great demand in the timber industry is teak (Tectona grandis) because of its very high quality. This study aims to determine the changes in the value of vitality indicators and health value status of teak community forests in Rulung Helok Village, Natar District to better understand the importance of forest health in realizing sustainable forest management. The method used in this research is Forest Health Monitoring (FHM). This research was conducted twice in June 2020 and January 2022. The results shows that the change in the value of vitality indicators in the value of measurement 1 and measurement 2 experienced changes in vitality indicators which tended to increase. The assessment of each teak forest health indicator with an average measurement of 1 is 2.44 in the good category (cluster plots 2, 6, 7, and 8) the medium category is absent and the bad category (cluster plots 1, 3, 4, and 5) and the average of the 2nd measurement is 1.75 in the good category (cluster plots 2, 4, and 6), the medium category (cluster plot 8), and the bad category (cluster plots 1, 3, 5, and 7 ). The status of changes in the 1st and 2nd measurements of the health of teak community forests obtained an average category of medium. This is due to the occurrence of tree damage in each cluster-plot.
Agent-based modelling application for social forestry policy evaluation
Authors: Abdulah L , Subarudi  , Lestari N S , Qirom M A , Yulianti M , Wicaksono D , Krisnawati H , Lisnawati Y , Astana S 
Published: December 2022

Abstract
Social forestry (SF) as a community involvement program in forest areas needs to be frequently evaluated, particularly on policy aspects considering the dynamics of program implementation. Policy issues related to SF program have not been well identified. As a result, the implementation of SF policies may not achieve the target and recurrently lead to new problems. This research aims to develop the best scenario to support the achievement of SF target but is limited to SF areas adjacent to oil palm plantations. The actor-based modelling was developed using Netlogo 6.2 analytical tool. The results showed that the implementation of SF program should include the economic welfare improvement of local communities as a main consideration. The best scenario to achieve SF target is providing full access for local communities to manage forest areas and developing a mechanism to market the commodities by considering domestic wood consumption. The model simulation indicates that this management approach would be able to maintain forest cover as well as increase the community’s income. Therefore, information on wood consumption level needs to be promoted as an investment opportunity in the forestry sector, which has not been well considered previously in SF program. This strategy can be used to increase the participation of local communities in SF program by providing sufficient economic benefit as well as improving the inclusion of local communities in sustainable forest management.
Tensile properties of edible films from various types of starch with the addition of glycerol as plasticizer: a review
Authors: Sartika M , Rambe F R , Parinduri S Z D M , Harahap H , Nasution H , Lubis M , Taslim  , Manurung R 
Published: December 2022

AbstractThe tensile properties of edible films are very important from their application as packaging for food products. Edible films are made from natural materials so that they are safe for the environment and can be consumed directly with packaged products. Starch used in the preparation of edible films can come from different sources to produce films with different characteristics. It is known that starch-based edible films have several weaknesses, such as being brittle, which causes the film to easily crack. Efforts should be made to improve the mechanical properties, elasticity, and hydrophobicity of edible films by mixing them with other additives such as glycerol as a plasticizer. The use of different starch sources and glycerol concentrations will affect the properties and characteristics of the edible film formed. Different starch sources significantly affect the properties of the thickness and strength of the film. Meanwhile, the addition of glycerol affects the tensile strength and flexibility of the film. Therefore, this review aims to examine the effect of different types of starch with the addition of glycerol on the tensile properties of the resulting film. Studies from various literature were carried out and several research results were compared and analysed regarding the tensile properties of edible films.
Occurrence of microbial community on plastic wastes in Terjun Landfill, North Sumatra
Authors: Munir E , Suryanto D , Pasaribu Y , Mubtasima S , Hartanto A , Lutfia A , Nasution A F 
Published: December 2022

Abstract
Plastisphere is a term for any microbial community that grow and develop on the surface of plastic. There was still a lot of plastics that was readily disposed in landfills, which would makes it feasible to discover bacteria that could decompose plastic and be used in bioremediation. The present study aims to determine the number of microbial density (colonies) and obtainining a number of microbial (bacteria, fungi) isolates from four different types of plastics namely low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), high-density polyethylene (HDPE) and polypropylene (PP). The density of bacterial population was the highest in LDPE, followed by LLDPE, PP, and HDPE. Meanwhile, the density and number of fungal population was exceptionally low in this study. A greater portion of gram-negative bacteria was larger than gram-positive bacteria with some filamentous fungi obtained from the isolation. The visual appearance using SEM analysis reveal the presence of mixed community between bacteria, fungi and yeast population.
Soil amelioration using several types of humic substances extracted from andisol, spodosol, peat and lignite to increase the growth of corn plants (Zea mays)
Authors: Rahmi E , Ernawita  , Satriawan H , Suwardi  
Published: December 2022

Abstract
Humic substances are products formed during the decomposition process of organic maerials which can be found in aquatic, sedimentary and soil environments. Humic substances can be used as an ameliorant due to its important roles in improving soil fertility and plant growth. The aim of the study was to determine the mechanism of humic substances in increase the growth of maize plants; to obtain the optimum types and doses of humic in increasing plant growth. The research was conducted in a greenhouse of IPB. The study used a completely randomized design (CRD) which consists of two treatments, namely humic types (Andisol, Spodosol, peat and lignite) and humic doses (15 and 30 liters/ha). The results showed that the administration of humic acid from lignite at a dose of 30 liters/ha was the best treatment to increase the growth of corn plants, which was characterized by better stimulation of leaf width, number of leaves, plant biomass weight, and root dry weight. Thus, humic substances are useful in improving the growth and productivity of corn plants.
The Cost of Mental Health Comorbid Conditions in Burn Patients: A Single-site Experience
Authors: Nam Jason , Sljivic Sanja , Matthews Robert , Pak Joyce , Agala Chris , Salamah Hanaan , Hatch Erica , Nizamani Rabia , King Booker , Laughon Sarah L , Williams Felicia N 
Published: December 2022

Abstract
Many burn survivors suffer from psychiatric sequelae long after their physical injuries have healed. This may even be more pronounced in individuals who have a history of mental health disorders prior to admission. The aim of this study was to explore the clinical outcomes of patients with previously diagnosed mental health disorders who were admitted to our Burn Center. This was a single-site, retrospective review using our institutional Burn Center registry. All adult patients (18 years or older) admitted to our Burn Center between January 1, 2014 and June 30, 2021 with burn injury or inhalation injury were included in this study. Variables of interest included demographics and burn mechanism. Outcomes of interests were length of stay, cost of hospitalization, and mortality. A P-value of &lt; .05 was considered statistically significant for all analyses. There were 4958 patients included in this study, with 35% of these patients having a previous diagnosis of mental health disorders. Patients with mental health disorders were younger, with larger burns, P &lt; .05. They had significantly longer lengths of stay and significantly higher costs (P &lt; .00001). Mortality for those with a mental health disorder history was 2% and 3% for those without (P = .04). Patients with pre-existing mental health disorders had decreased odds of mortality. However, they do have extended lengths of stay, which may exhaust current sparse staff and burn bed resources.