bluuebunny/crossref_metadata_2025_split huggingface dataset:
Local wisdom as a determinant of the season and wind calendar for coastal communities in Jaring Halus Village
Authors: Aulia F 
Published: November 2019

Abstract
The purpose of this research is to describe a local wisdom of jaring halus village coast communities, Secanggang District of Langkat Regency towards the determination of sea time and analysis based on the seasonal and wind calendars according to the experience of community adaptation. The method of this research is a qualitative descriptive by using the adaptation approach described by Steward in the framework of Cultural ecology analysis. The results of this study indicate that weather change is an important indicator of activity. Hence, by revealing the life cycle of the coastal community, it will be known also the general timeframe allocated for work. As a community whose life depends on the tidal cycle of the sea, the life of the fishing community on the East Coast of North Sumatra does make the moon's rotation of the earth as a basis for consideration in recognizing marine phenomena. the community believes that Knowledge of the Arabic calendar or hijri is proven relevant. The relevance is because of the Islamic calendar year calculated based on the circulation of the moon and the position of the moon astronomically that influence the conditions in the ocean. Seasonal changes in coastal and marine ecosystems are identical to the dates of the hijriyah year.
Community demography and perception towards mangrove exploitation in Jaring Halus village, North Sumatera
Authors: Sahputra E , Harahap R H , Wahyuningsih H , Utomo B 
Published: November 2019

Abstract
Biodiversity in specific to marine resources has been valuable sources for traditional and indigenous people living within coastal area. Integration of ecosystem-based development or management into rural development is needed to overcome daily economic and prolonged environmental issues. This baseline study is aimed to obtain socio-economic perceptionoftraditional community or fishermen in Jaring halus, a coastal village located in Secanggang district, Langkat regency, North Sumatera,regarding theirhigh dependences on mangrove resources. The study used questionnaires in which productive respondents were sampled purpossively according to their exploitation activities in mangrove area. Results of this study were analyzed descriptively to present the general view of their perceptions and activities. Males were documented with higher mangrove exploitation and utilization than females in Jaring halus. Mangrove resources were harvested in raw material or timber as building material compared to other form of utilizations. According to their knowledges, natural resources must be utilized along with conservation-based management. However, deeper investigation is needed to obtain empirical evidence upon habitat degradation of mangrove areas in Secanggang district in order to evaluate the impacts of mangrove harvesting by the community.
Financing and marketing partnership of the marine fisheries bussiness in Merauke, Papua
Authors: Hikmah H , Shafitri N , Zulham A 
Published: November 2019

Abstract
Fishing business is an economic-based activities for profit goal. In fact, it continuously faces uncertainty conditions that affect the sustainability of fishing activities. Partnership would be the one of the fishers’ strategies to encounter those uncertainties. This research aims to analyze partnership models, rules and interaction models among institutions as well as to develop partnership strategy in capture fisheries in Merauke District, Merauke Regency. Method of the research are qualitative and descriptive approach. The results show that partnership institutional models of fishing business in Merauke District are: general trade partnership models, marketing contract models, and cooperation models of investment and operational fishing business.
Determination of water quality condition from water samples around location of ship to ship transfer of coal in Balikpapan, East Kalimantan, Indonesia
Authors: Suyatna I , Riadi R I , Feriyanto I J , Ghitarina  , Gunawan B I , Sasono R R , Rafii A 
Published: November 2019

Abstract
A collection of water samples from area of Ship To Ship (STS) transfer of coal in Balikpapan was carried out in June November 2018 to provide data for a study related to issues on fish catch decline in the area that was claimed by mini trawlers. The study aimed to determine and assess water quality parameters which play an important role on the current issues. All samples were taken in six sampling sites between the shore and the STS, and the nearest sampling site was 0.18 km and the farthest was 5.5 km from the STS. Each sample consisted of 27 analysed parameters including eight heavy metals. Results of laboratory analysis showed that the concentration of water transparency, DO (dissolved oxygen), turbidity, TSS (total suspended solid), temperature, NH3, PO4-P and NO3-N in the sampling sites far from the STS were found higher than those ones near the STS. In contrary, the concentration of pH, salinity, BOD5 and Phenol were noticed to be high near the STS. Others such as odour (smell), debris, oil layer and H2S were observed nil, while CN, oil and fat and MBAS (methylene blue active substances) showed the same concentration at all sampling sites. Hence, all of the concentration was in the range of allowable limit according to KepMen LH No.51 Year 2004 except for PO4-P and NO3- N. From eight heavy metals, Hg, As, Cd, Cu, Zn and Ni were discovered to comply with the regulation while two metals Cr (IV) and Pb reached the limit. The study concluded that the water quality around the STS transfer was generally in favourable condition. However, harmful algal blooms could be occurred since the study area was detected to have high concentration of nutrients.
The level of fisherman compliance with the legality of vessel documents in Idi Fishing Port, East Aceh, Indonesia
Authors: Chaliluddin M A , Mustami N , Rizwan T 
Published: November 2019

Abstract
Research on the level of fishermen's compliance with the legality of vessel documents at the Idi Fishing Port, East Aceh was carried out in January 2019. The purpose of this study was to determine the level of fishermen's compliance with vessel document legality and fisherman satisfaction with Idi fishing port services in managing vessel legality. The method used in this study is survey and interview methods with qualitative and quantitative descriptive analysis. The sampling technique is Simple Random Sampling (SRS) with the respondents being fishermen. Data analysis using chi-square. Based on the 5 tested variables (physical evidence, reliability, responsiveness, security and care) that had a significant effect on fisherman satisfaction were reliability variables (p-0.042 < 0.05) and security guarantees (p-0.000 <0.05). The results showed the level of compliance of fishermen as much as 90.2% of fishermen were obedient and satisfied with the services of the Idi Fishing Port, East Aceh.
Numerical study of tides in the Bay of Sabang
Authors: Wahyudi H A A , Haditiar Y , Ikhwan M , Wafdan R , Setiawan I , Muhammad M , Sugianto S , Rizal S 
Published: November 2019

Abstract
This study aims to observe tidal sea behavior in Bay of Sabang by using a two-dimensional hydrodynamic model. The research domain was obtained from SRTM15, which had been interpolated so that it has a spatial resolution Δx = Δy = 0.1 minutes (185 meters). As a generator force, the open boundaries model is given five main tidal components (M2, S2, K1, N2, O1) obtained from TPXO 7.2 data. The model is simulated for 31 days with time step based on CFL condition criteria. Our model verification is quite good when compared with TMD prediction data (r = 0.9996). It shows that our model can be used for tidal hydrodynamics studies in Bay of Sabang. The results show that tides in Bay of Sabang are predominantly mixed prevailing semi-diurnal (F = 0.857). The speed of tidal currents in Bay of Sabang is quite small both for spring and neap tides. The difference in velocity between spring and neap tides reaches 0.6 cm/s.
The effect of probiotics (RABAL) on application in diet with different doses on growth, survival and feed conversion of Barramundi (Lates calcarifer)
Authors: Anna L , Muhammadar  , Sahidhir I 
Published: November 2019

Abstract
The study aimed to determine the effect of RABAL probiotics with different doses to improve Barramundi growth, survival and feed conversion. This research was conducted from March to April 2019 at Balai Perikanan Budidaya Air Payau. This study uses a Completely Randomized Design (CRD), which consists of controls namely without the administration of probiotics and 3 treatments given with various doses of probiotics, namely 10 mL / 100 gr feed, 20 mL / 100 gr feed, 30 mL / 100 gr feed. Based on the best ANOVA test results at the treatment is 20 mL / 100 gr with absolute weight growth of 3,09 ± 0,27, absolute length growth of 2,52 ± 0,09, specific growth rate of 4,5 ± 0,20, survival 99 ± 4,79, and feed conversion ratio 0,90 ± 0,07. The results of the study showed that different dosages of RABAL showed significantly different results (P <0,05) on absolute weight, absolute length, specific growth rate, survival and feed conversion.
Distribution of sediment grain size in Kajhu coastal area, Aceh Besar District, Indonesia
Authors: Setiawan I , Miswar E , Zulfahmi I , Yuni S M 
Published: November 2019

Abstract
Kajhu coast located in Baitussalam sub-district, Aceh Besar district. This location was once hit by a tsunami. Currently, the Kajhu coastal area continues to change, among which changes occur in new sediment deposits which are quite rapid around the estuary followed by an increase in the rate of erosion on the other side of the estuary. This phenomenon resolves rehabilitation plants to become extinct. This research conducted to analyze the distribution of sediment grains in the Kajhu coastal region. The distribution of sample grain size determined by the dry sieving procedure. Sediments sorted into grain size fractions of 4.75 mm, 1.70 mm, 850 μm, 200 μm, 100 μm. Then the sediment weight calculated based on Shepard's triangle. The results showed the Kajhu Coast research area had three sedimentary fractions namely gravel, sand, and mud with the gravel highest percentage at station 2 (33.72%), the sand highest percentage at station 4 (97.27%) and the mud highest percentage found at station 6 (24.61%).
Construction of fishing gears used as capturing shellfish in Bagan Deli marine coastal area, North Sumatera, Indonesia
Authors: Iqbal T H , Rauzatullah  , Miswar E , Rianjuanda D 
Published: November 2019

Abstract
Bivalves and gastropods nowadays became mainly catches shellfish by coastal community due to their commercial values to the market. Considering the constructions of fishing gears may get a unique behavior of fisherman for gaining more shellfish. However, this research concern about the constructions of fishing gears used and shellfish catches by local fisherman in Bagan Deli marine coastal area. The sampling was took place and date at Medan Belawan's District in North Sumatera, Indonesia during January 2019. In-situ observation was used to identify the type of fishing gears, its constructions and shellfish catches by local fisherman and describing systematically into data tabulation. Some results showed that mostly local fisherman used cage grabber, net claw and local fishing gear instrument namely uncang. Another interesting result is that the different material of its constructions of fishing gears affected to a difference of shellfish catches. These facts concluded that local fisherman had specific skill and deep knowledge to perform its fishing gears as traditional methods of capturing shellfish.
Exploring Lean Construction for Housing Projects: A Literature Review
Authors: Primayuda V D , Hatmoko J U D , Hermawan F 
Published: November 2019

AbstractOne of the problems that often arise in housing projects is time delay, which may results in an increase in construction costs. This delay can be attributed to deficiencies in site management, ineffective communication strategies, and a lack of coordination between stakeholders. Lean construction is a method that can be used to improve the construction management system. The basic concept of this method is to reduce activities that do not add value and increase the value. The purpose of this study is to explore the implementation of lean construction principles at housing projects in order to improve project management so that delays can be minimized. The objectives of this research are; (1) to identify waste in the construction process, (2) to find barriers in applying lean construction principles, and (3) to recommend strategies for implementing lean construction principles in housing projects. A comprehensive literature review is conducted to achieve the aims and objectives of this study. The results show that the implementation of lean construction principles in housing projects can provide several benefits, such as minimizing waste, reducing construction time, improving building quality, and providing better benefits to contractors.
Numerical Modeling of Foot Plate Foundation Located on Peat Soil
Authors: Iman M , Harwadi F , Pramudiyanto  , Aminullah  
Published: November 2019

Abstract
Peat soil can be found in several place in Indonesia, one of them in Kalimantan. Peat soils with its characteristic have highest compressibility among than other soil types. The experimental modeling of foot plate foundations in peat areas was too difficult to be performed. Numerical modeling can be one of the efforts to determine the optimum results with a relatively more economical cost. This study modeled the foot plate foundation structure where located on peatland with different elevation of peat soil into the elevation of the foundation. Peat soil elevation had been determined successively below the foundation elevation, the same level of the foundation elevation and above the foundation elevation. All geometric and material data had been obtained from field data. The analysis performed in static analysis with in 2D shell idealization by utilizing Abaqus software version 6.14-2. Numerical results had been also compared with analytic results. The result of the research showed that there is a match between numerical result and analytic result. The stress occurred at the base of the foundation for each peat soil elevation difference correspondently 16,53 MPa, 9.34 MPa and 3.59 MPa. The lowest stresses occurred when the peat soil elevation located above the foundation elevation (78.28%).
The Development of Engineering Mechanics Software as a Self-study Tool of Structural Design
Authors: Pramudiyanto  , Purwantoro D , Ma’arif F 
Published: November 2019

Abstract
The main purpose of this research is to get design parameters that can be used as a basis for consideration for the design of the final construction. This is a development research where the product that will be produced is a software. The developed software using Borland Delphi XE 3. The data will be analysed in the form of data nodal displacement, reactions, and styles in, in the form of different relative to the reference software. The data obtained during testing processed and presented in the form of tables and graphs. As comparison to verify the data issued, used MS Excel and commercial program. Based on the results of the research can be deduced that: (1) Program designed still has relative error 0%. This indicates that the program is designed to have the level of thoroughness is good enough, (2) The program can be started with a simple input and can run well without any obstacles, (3) Program is still limited to the delivery of the result is numeric, not display the results in the form of graphics, (4) Input data entered is also still in the form of numbers, not be graphics.
Rainfall Runoff Model Evaluation for Lebir River, Kelantan, Malaysia
Authors: Winarta B , Juwono P T , Ghani N A A 
Published: November 2019

Abstract
On January 5, 2015, the National Security Council (NSC) confirmed the massive flood that hit Kelantan was the worst in the history of the state. According to the council’s report, the water level of Kelantan River at Tambatan Diraja which has a danger level of 25 meters, reached 34.17 meters. The Kelantan River basin is located in the north eastern part of Peninsular Malaysia between latitudes 4° 40’ and 6° 12’ North, and longitudes 10° 20’ and 102° 20’ East. The river is about 248 km long and drains an area of 13,100 km2. It divides into the Galas and Lebir Rivers near Kuala Krai, about 100 km from the river mouth. The Lebir River itself has catchments area of 2430 km2. This current paper investigates a calibration and confirmation method of hydrologic model using HEC-HMS (Hydrologic Engineering Center-Hydrologic Modeling System) applied in Lebir River. General speaking, the degree of confidence of hydrologic models prediction will normally depend on how well the model can replicate and imitate the observations recorded data. The stream flow data used in this analysis is obtained from station 5222452 at Kg. Tualang with a duration period from years 2004–2014. The results of investigation revealed that the observed and simulated discharge hydrographs in the calibration and confirmation exercises were reasonably close.
Environmental assessment of recreational value on pine biogeocenoses in Somovsky forest (Voronezh region, Russia)
Authors: Timashchuk D 
Published: November 2019

Abstract
Currently, recreation is the most common use of natural areas. Silvicultural assessment of the state and stability of pine biogeocenoses has been used for conducting a systematic analysis of the recreational potential of forest areas exposed to recreational impact. Functional recreational zones in various categories of recreational landscape are highlighted. The results show that species diversity of underwood trees decreases, projective cover of the ground cover and proportion of forest species increases, specific resistance of the upper soil layer grows with an increase in the recreational load. Specific resistivity is 20.5 kg/cm2 at a depth of 20-25 cm while approximately equal resistance is already observed at a depth of 3-5 cm in the fifth type section (forest road). Unsatisfactory organization of landscape structure has led to a decrease in sustainability in forest ecosystems of the Somovsky forest district. The chosen forest landscape category occupies 6,262 ha on the territory of the Somovsky forest district, forest-park area – 2,912 ha, the subzone of “Organized Mass Leisure” – 46.5 ha, the subzone of “Beach recreation” – 113.5 ha, the subzone of “Mass flashpacking recreation” – 2,752 ha. The obtained data indicate the necessity to introduce the regulation modes for recreational use of Somovsky forest district territory.
Mechanism for managing the development of industry enterprises
Authors: Avdeeva I , Oleynik E 
Published: November 2019

Abstract
The relevance of enterprise development management issues paves the way for elaborating and studying a managing mechanism. In the present paper, priority factors of the internal environment, which determine the development of an enterprise, are monitored and identified to formulate recommendations on development management. The factors identified were characterized by a number of relative indicators used for development assessment. Methods for assessing the enterprise development, by which comprehensive analysis and identification of promising and current development priorities were proposed, create an effective enterprise management system that can be positioned in a competitive environment. Various options for management decisions, determined by the type of the enterprise development, were proposed as tools for ensuring the enterprise development. The type of development is based on the combination of aggregated indicators by subsystems, which are called complex indicators. Based on the identified factors and the methods, a mechanism for managing the development of enterprises was elaborated. The application of this mechanism at the enterprise level will facilitate the adoption of strategically sound management decisions and increase the efficiency of economic management.
Imitating modeling results of a recuperative hydraulic subsystem of the timber truck manipulator
Authors: Posmetev V I , Nikonov V O , Posmetev V V 
Published: November 2019

Abstract
The relevance of improving the efficiency of a timber truck used for timber transportation due to the use of a recuperative hydraulic drive in its design is substantiated. The analysis is made of the use of recuperative hydraulic drives of technological machines with mechanisms for the recovery of kinetic energy of rotation and potential energy of lowering the load. A mathematical and, based on it, simulation model has been developed for the hydraulic subsystem of the manipulator of a timber truck, including mechanisms of boom, handle and column recuperation that have also been developed. Dependencies are obtained that make it possible to determine the maximum amount of recuperated energy for one loading cycle by changing the volume of the pneumohydraulic accumulator, the height of the assortment, and the time of one loading cycle.
Basic property analysis of sod-forest soil covered by a forest fire in the territory of Usmansky pinery (RF)
Authors: Deviatova T A , Gorbunova Yu S , Rumyantseva I V 
Published: November 2019

Abstract
The paper deals with nine years analyzing of physical, physicochemical and chemical properties of sod-forest gley-eluvial soil in the territory of Usmansky pinery in European Russia exposed to large-scale fire in 2010. We discovered that in a layer of 0-10 cm there is a decrease in the content of the clay fraction by 6.15%, that is 63.4% in relative percentages, also the content of medium dust decreased by 0.16%, that is 3.02% in relative percentages and fine dust by 1.21%, that is 47.5% in relative percentages. It was revealed that in 2011 the year after the forest fire, the soil had higher pHH2O it went up from 4.12 (reference soil) to 5.36 (pyrogenic soils) and lower hydrolytic acidity, which decreased from 6.38 (reference soil) up to 5.98 (post-pyrogenic soils 2018) [mmol (eq) / 100 g of soil] compared to 2010. Due to fire the humus content decreased from 3.93 (reference soil) up to 2.82 % (post-pyrogenic soils 2018), decrease of exchange cations from 8.16 up to 7.65 [mmol (eq) / 100 g of soil]. From 2011 to 2018 there has been a decrease in the content of alkaline-hydrogenated nitrogen from 9.02 (reference soil) up to 6.06 (pyrogenic soils 2011).