bluuebunny/crossref_metadata_2025 huggingface dataset:
Prediction-based Resource Provision and Virtual Machines Placement in Cloud Data Center
Authors: Du Shengyu , Wu Yufei , Yin Changqing
Published: November 2019

With the rapid development of virtualization, cloud servers provide the power and flexibility that single servers struggle to provide. However, low utilization of physical machines and high energy consumption are the main concerns for cloud service providers. In this paper, we propose a predict-and-place framework to decrease the number of active physical machines in cloud centers. We analyze the historical VM (virtual machine) request records to predict the VM demands in the next several days and then use an offline VM placement strategy to keep the number of active servers as less as possible while satisfying the SLA (Service-Level Agreement) requirements. In the prediction process, we enhanced the classical Holt’s linear prediction method on account of inevitable outliers to increase the prediction accuracy. We conduct experiments to compare the prediction accuracy of Perceptron, classical Holt-Winters, and our refined, robust Holt-Winters method. The experiment based on real data shows the simple perceptron has an inferior result. Our improved prediction method reduces the MAPE (Mean Absolute Percentage Error) by about 50% compared with the classical one, and the predict-and-place framework decreases the average number of active physical machines effectively in the cloud data center.
Research on SDN Flow Secure Access Control
Authors: Yang Hu , JiaXing Lei
Published: November 2019

In order to ensure the Software Defined Network (SDN) flow security access, this paper puts forward a SDN terminal access control system through the deep study on the terminal security access solution in the existing SDN. This system combines the traditional terminal access control technology with the new SDN network and mainly implements some functions such as user’s identity authentication, terminal security status assessment, user’s service authorization, QoS control, and so on. Simultaneously, the system security is analyzed in detail. The network simulation in Mininet is carried out in combination with the RYU controller secondary developed so as to complete the experiment of access control function and communication delay performance. The results show that the security access control system of SDN flow has flexible access control security strategies and then can detect the threats from the insecure terminal access in SDN. This can not only realize the identity authentication of users but also ensure the security of access terminal, and thus realizing the access authorization of terminals in different safe states.
A Hybrid Feature Selection Method for Network Traffic Anomaly Detection
Authors: Wu Haoming , Zhang Bin , Dong Shuqin
Published: November 2019

In order to keep fast and accurate in feature selection for network traffic anomaly detection, this paper proposes a hybrid feature selection method. Firstly, to reduce the calculation and to identify the redundant features, we regard the ratio of mutual information between features to a feature entropy as the redundancy degree of the feature. If the ratio is greater than a predefined threshold, the feature is judged as redundant and will be deleted from the feature set. Secondly, based on the feature set whose redundant features have been removed, this method uses the ratio of the anomaly detection accuracy after and before delete one feature from the feature set to measure the effect of the feature on detection. Then, the features are sorted in ascending order of the ratio and the top k features with the highest detection accuracy are selected as the result. Experimental results show that the proposed method can quickly screen out a feature subset with good detection performance and lower dimensions.
Determination of the electrostatic potential produced by a uniformly charged ring
Authors: Mesa Fernando , Orrego Edwin , Villa Guillermo
Published: November 2019

Finding the electrostatic potential produced by a point load is an easy task, when that point load is replaced by a load distribution this task is complicated, the difficulty of this procedure depends on the place where you want to know the potential, it is not the same to find the potential at a given point to find it in any place in space. In this case we will work with a uniformly charged two-dimensional ring, the problem that arises is the obtaining of the electrostatic potential at any point around the ring, for this we will look for the conditions that must be met to pose the problem, a theoretical solution for this problem, in which we find the Legendre polynomials and finally proceeds to make this same solution using the two dimensional finite element method.
Optimal control with bounded entries principle of Pontryagin
Authors: Mesa F , Orrego E , Ramirez C
Published: November 2019

The generally, systems control the saturation results in their dynamics, either in their control signal, in their states or in both. This paper presents the theory and wording of the Pontryagin principle, which has been applied as this type of continuous time problems, to obtain control laws that optimize the index in question. Likewise, a problem is presented and solved with which the application of the Pontryagin principle is exposed and finally the conclusions are presented.
Performance in saline environment of a carbon steel surface modified by three-dimensional ion implantation
Authors: Sanabria F , Viejo F , V-Niño E D
Published: November 2019

The three-dimensional ion implantation method is presented as a new plasma-ion technology for advanced surface treatment. It is based on a high voltage pulsed discharge activated in the low-pressure range and applicable to solid surface immersed in a gaseous atmosphere. This process is carried out in the joint universal plasma and ion technologies experimental reactor and is widely used to improve the tribological properties and corrosion resistance of metallic materials, specially steels. In this study, the performance in a corrosive environment of a carbon steel surface-modified was evaluated. High-energy nitrogen ions were implanted on the surface of the material at different discharge voltages and times. Treated and non-treated substrates were exposed to saline solution for 35 days, where the effect of the surface modification was shown to decrease the corrosion rate and degradation of the implanted material surface compared to untreated substrates. The estimation of the nitrogen concentration from experimental parameters were calculated by a novel web application. Additionally, the effect of the implantation process of the modified steel structure was analyzed by optical emission spectroscopy, whose results detected mainly an increase of the nitrogen concentration at the surface of the modified substrates.
Russia - CERN cooperation: current status and perspectives
Authors: Smirnov Sergei
Published: November 2019

The paper presents the current status and future perspectives of international cooperation of Russia with the European Organization for Nuclear Research (CERN) in the fields of elementary particle, high enegry, and nuclear physics. It briefly describes the history of the Oranization, the development of the USSR and later Russian Federation scientific contacts with CERN and their legal basis, the present state of Russian scientific community involvement in CERN research programmes, as well as the future joint projects. The cooperation in education and training activities is also discussed.
Professional Qualifications’ Recognition and Megascience Projects
Authors: Zaplatina T S
Published: November 2019

The article is devoted to the analyzes of the issues of legal regulation of mutual recognition of professional qualifications in the context of increasing cross-border scientific cooperation, the emergence of new forms of cooperation and exchange of workforce, in particular in the framework of megascience class projects i.e. great science. The EU was the first integrational organization among the other organizations existing in Europe and the world that recognized the need to develop special legal mechanisms to ensure cross-border mobility of qualified specialists, and also adopted acts to conduct research within megascience (both at the EU and individual states level). The participation of scientists from various countries in megascience projects involves the integration of states not only to create structural units (cross-border associations) for the implementation of large-scale research, but also the integration of the economic and educational space, free movement of scientists.
Peculiarities of Integration of Russian Scientists into the World Scientific Medium
Authors: Ogorodnikov A Yu
Published: November 2019

The article describes the Russian experience in science institutionalization in the conditions of intensive innovative international interactions in the framework of the large-scaled research projects, such as megascience, etc. The research methodology of the science subject as the intellectual innovative potential carrier is discussed. The analysis of the results of the sociological research of the strategies for achieving goals by scientific field agents is described. The comparison of motivations and nature of professional self-fulfillment of two groups of scientists oriented towards the active international interaction and striving for attaining scientific objectives within one country is the distinctive feature of the article. The results of the research demonstrated institutional nonconformity of functioning of scientific systems on the level of separate scientists, organization and government regulation which restricts the opportunities for creating the positive image of the Russian science, protection against the risks of loss of the intellectual property in the course of international cooperation. The authors made a conclusion about the necessity to establish coordination structures engaging the scientists themselves which are able to integrate the activities of organizations in the framework of large-scaled long-term state programs.
Relevance of Philippine policies for muslim-friendly ecotourism management in adapting the climate change challenges
Authors: Tagoranao M , Gamon A
Published: November 2019

The impact of climate change on the natural environment has been a common case affecting the ecotourism management in Mindanao. There are many challenges and threats facing the ecotourism development, in particular, mitigating natural hazard and preserving a Muslim-friendly environment. The government needs policies for sustainable development, by improving an efficient use of natural resources and infrastructures for less greenhouse gas emissions (GHG), and provide permissible services and livelihood for poverty reduction to help the realizations of Millennium Development Goals (MDGs). Developing the Muslim-friendly ecotourism destinations, particularly in the Bangsamoro Autonomous Muslim Regions (BARMM) can overshadow the environmental risk and it will provide economic development and health protection to the local people and the tourists. The findings will show that aside from the Tourism Act 2009 and the climate Change Act (Republic Act 9729), the presence of well-formulated policies and guidelines on ecotourism in adapting the climate change will widen the possibilities for the people to further benefit from ecotourism development. In conclusion, it is of great importance that in facing the climate changes, the government must have strict environmental standards compounded by strict enforcement. However, for paradigm shift, it is necessary to be reminded that “we have to accept the evils of global development along with its blessings”.
Study on the medicinal plants against grouper iridovirus infection: A short communication
Authors: Xiao H , Yu Q , Wang T , Liu M , Qin X , Li S , Chen X , Wu S , Wang Y , Li P
Published: November 2019

As one serious viral pathogen in mariculture, grouper Iridovirus (GIV) could cause high mortality to cultured groupers, then effective treatments against GIV infection are needed. The effects of Thlaspi arvense Linn. extracts against GIV infection was assessed by different methods in this study. The safe concentration of the water extract of Thlaspi arvense Linn. was initially determined as ≤1.25 mg/mL, which showed no obvious cytotoxic effects on cell viability. Using the safe concentration, aptamer(Q2)-based based fluorescent detection assay and qRT-PCR results indicated that, Thlaspi arvense Linn. water extracts had excellent inhibitory effects against GIV infection in vitro and in vivo. In addition, the mechanism of Thlaspi arvense Linn. on the invasion process of the grouper iridovirus was examined, which showed that Thlaspi arvense Linn. water extracts had significant inhibitory effects at the stage of virus adsorption on the host cell membrane. The inhibitory rate was 87.48%. Overall, Thlaspi arvense Linn. water extracts have great antiviral effects, making it an interesting candidate for developing effective medicines for fighting against GIV infection in farmed groupers.
Evaluation of trophic status of Deudap Beach and Lhok Reudeup Beach, Nasi Island, Aceh Province, based on nitrate and phosphate concentration, and chlorophyll-a abundance.
Authors: Ulfah M , Anggraini L , Karina S , Agustina S , Octavina C , Humaira S , Utami D R , Syahliza F , Ramadhan M R , Putra D F , Iqbal T H , Purnawan S , Kurnianda V
Published: November 2019

The investigation of the trophic status based on the nitrate-phosphate correlation and chlorophyll-a abundance in Deudap beach and Lhok Reudup beach, Pulau Nasi, Aceh were carried out in November 2018. Determination of sampling location based on purposive sampling method. The total nitrate, total phosphate concentration, and chlorophyll-a abundance determined by Ultra Violet-Visible (UV-Vis) spectrophotometre which was confirmed from the real-time NOAA database. The results of the chlorophyll-a abundance analysis showed that the abundance of chlorophyll-a in the surface layer ranges 0.7 - 0.11 μg / L. Total nitrate and total phosphate concentrations at deudap beach and lhok reudup in the surface layer ranges 260 - 183 μg / L and 9.4 - 6.8 μg / L. Furthermore, the results indicate that the phenomenon of the chlorophyll-a abundance is closely related to the availability of the macronutrient of nitrate and phosphate. Based on the correlation between total nitrate-phosphate and chlorophyll-a abundance in deudap beach and lhok reudup, Nasi Island are included in the category of oligotrophic waters.
DNA barcoding of snakeskin gourami Trichogaster pectoralis and blue bourami Trichogaster trichopterus based on cythocrome c oxidase subunit I (COI) gene
Authors: Syaifudin M , Jubaedah D , Yonarta D , Hastuti Z
Published: November 2019

Snakeskin gourami Trichogaster pectoralis and blue gourami Trichogaster trichopterus are the species from the genus of Trichogaster. There are three species of the genus Trichogaster in Indonesia. This research aimed to identify the sequence of cytochrome c oxidase subunit I (COI) gene of mtDNA, and construct the phylogenetic trees among species. The stage of research consisted of DNA isolation, DNA amplification using PCR (Polymerase Chain Reaction) and sequencing COI gene in mtDNA region. Sequencing of the COI gene produced 604 bp for snakeskin gourami and 628bp for blue gourami. The result of BLASTn (Basic Local Aligment Search Tool-nucleotide) analysis showed that snakeskin gourami from Kelekar River had 100% similarity of snakeskin from Indonesia and Philippines and farthest (88%) with snakeskin gourami from France. Blue gourami from Inderalaya had 100% similarity with three spot gourami from Australia, South Africa and India and farthest (88%) with snakeskin gourami from Japan. The phylogenetic tree indicated that snakeskin and blue gourami were clustered in separate branches, where snakeskin gourami had 100% similarity to the same species from Indonesia and the Philippines, and blue gourami had 100% identity to the same species from Japan.
Local wisdom as a determinant of the season and wind calendar for coastal communities in Jaring Halus Village
Authors: Aulia F
Published: November 2019

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

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

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

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

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

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

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

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

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

One 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

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

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

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

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

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

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

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).
Analytical assessment of social, environmental and economic indicators for the balanced development of the economy of the region
Authors: Bezrukova T L , Larionov V G , Kuksova I V
Published: November 2019

The article suggests an analytical evaluation of social, environmental and economic balanced development of the regional economy on the example of the Voronezh region. The assessment is based on a correlation analysis of indicators. The calculation of correlation coefficients revealed similarity and direction of the relationship of the studied parameters. Analytical assessment reflects the interrelation of indicators in the three main components of the regional economic sectors (economy, nature and society). Any development of economic activity causes significant harm to the environment by emissions of harmful substances into the atmosphere, discharges of polluted effluents into surface water bodies, formation of a huge amount of production and consumption waste. The measure of this impact are different in their strength, as well as the magnitude of the applied social, environmental and economic damage to the environment in different periods of economic development of the countries. The process of innovative development in production creation of new materials and other fields, (as well as any technogenic impact) can cause a negative, adverse impact on the environment. Environment protection becomes one of the priority tasks of modern eco-oriented economic development. This assessment can be further used in regional management to diagnose the current situation, identify cause and affect relationships between indicators and predict the parameters of balanced development.
Transformation of the structure of the timber industry complex on the path to new industrialization
Authors: Kirillova S S , Borisov A N , Bezrukov B A
Published: November 2019

The article shows a study to assess the structure of the timber industry complex of Russia in the pioneering days of a new industrialization. It is a radically new stage of scientific and technological progress that has no historical analogues in the degree of influence on human civilization. New industrial technologies, possessing enormous potential for changing the direction of technological development, at the same time have ambiguous social and environmental consequences. The timber industry complex is one of the most important and interesting objects for research, since the products of the industry are distributed throughout the world and play an important role for the economies of all countries. In developed countries, the forest industry complex accounts for about 10% of the total industrial production. Wood is an important type of raw material. Even considering the competition from new technologies and materials, the proportion in the structure of the global gross domestic product is almost not reduced. The fundamental problem of assessing and predicting the effects of new industrialization based on technological transformation using quantitative indicators forms the need to create a multisigmoidal innovation cycle for changing the structure: from obtaining new fundamental knowledge to their practical use.
Production of compressed wood with target quality indicators from different parts of tree trunk
Authors: Platonov A D , Snegireva S N , Stepanova Yu N , Bryndina L V
Published: November 2019

Wood species has great influence on the service life and quality of compressed wood. Currently, the industry lacks high-quality wood, so one of the solutions to this problem is the possibility of expanding the species composition used for the manufacture of compressed wood. The predominant group of species is soft hardwoods. It is advisable to use birch wood for the production of compressed wood. This conclusion is made on the bases of wood species stock and its physical and mechanical properties. Information on the nature of raw materials is needed to implement the pressing wood technology. Wood is a biological material whose properties change in the tree trunk. Changes in moisture content and wood density in the height of the tree trunk have been studied. The necessary degree of pressing has been determined on the basis of these data. It takes into account the required final density of compressed wood. Initial thickness of the specimens has also been calculated. This has made it possible to obtain a uniform density of compressed wood. It also reduces raw material consumption, taking into account from what part of the tree trunk the wood was taken.
Bioecological aspects of plantation nut cultivation of Siberian cedar (Pinus sibirica du tour.) in Russia
Authors: Titov E V
Published: November 2019

The conditions for obtaining the maximum gross yield of pine nuts on the grafting plantations have been considered. Nut production plantations are created in the most productive vegetative conditions (not lower than II-III quality class). The selection of areas was carried out on the basis of forest vegetation zoning, bioecological properties and climatic conditions. First of all, plantations are laid in the zone of ecological optimum, outside the natural range (zone of coniferous-deciduous forests of the European part of Russia). Valuable clone genotypes of Siberian cedar for seed and pollen productivity have been selected on graft plantations and in the archives of plus tree clones. Mixing of clones is carried out taking into account the reproductive differentiation of genotypes, providing a biologically possible output of full-grain seeds from the cone. Clones of various reproductive types and seed productivity are placed on the plantation in the absence of natural sources of pollination. Dates of flowering and pollen dispersion must be the same. The distance between the trees should ensure the yield increase with full crowns for at least 50-80 years. Maximum distance between high-yielding grafts and pollinating grafts is not more than 15 m.
Research on Stress-Strain State in the Angular Domain Cut-Out Zone Using Photoelastic Method
Authors: Frishter Ludmila
Published: November 2019

Current challenges in civil engineering practice call for creating and substantiating structural theory research approaches that correlate with the objects, processes and phenomena under study (physical models) to the fullest possible extent, and that provide reliable results for tackling engineering challenges. The topicality of this paper is associated with the choice of research method, i.e. the experimental photoelastic method. This method allows to obtain the local stress-strain state with the highest reliability when solving problems with specified rupturing forced deformations in the domain of significant structural non-homogeneity, i.e. geometrical stress concentrators. Boundary shape and finite discontinuity of specified forced deformations translate into emerging singularity of stress-strain state. The research aim consists in theoretical and experimental analysis of the stress-strain state in neighborhood of irregular point on the boundary of plane domain which the finite discontinuity (jump) of forced deformations emerges into. The singularities of strain-stress state of structures and constructions that are characterized by “structural non-homogeneity” and rupturing forced deformations are determined using polymer models of the photoelastic and deformation freezing method as stress concentrators whose domains are the focus of this article. Research results demonstrate that a zone of stress-strain state similarity exists in the domain of stress concentration under the action of rupturing forced deformations. This is confirmed by the similarity of experimental data. A formula for experimental data extrapolation is proposed that helps restore band orders in the domain of elasticity problem singular solution where isochromatics on the photoelastic method polymer model are unreadable or “poorly” readable.
Degradation of Dynamic Parameters of Reinforced Concrete Buildings during an Earthquake
Authors: Mkrtychev Oleg
Published: November 2019

The article presents the results of a numerical study of the effect of local damage to load-bearing structures on the dynamic characteristics during an earthquake. The studies were carried out in the LS-DYNA software package, which implemented the nonlinear concrete model, Continuous Surface Cap Model (CSCM). The computational model of the building uses solid finite elements for concrete and bar elements for reinforcing bars. As the object of modelling, a 1-storey building with a frame structural layout was chosen. Studies have shown that during an earthquake with an intensity of 7 points, specified by the corresponding accelerogram, there is no change in natural frequencies, that is, the damage resulting from this earthquake is insignificant. During an earthquake with an intensity of 8 points, a significant (up to 55 %) reduction in natural frequencies occurs. This suggests that the structure is damaged, and the overall stiffness of the building is reduced. Analysis of the results shows that the most intense decrease in natural frequencies occurs in the active phase of an earthquake. After the end of the active phase, the frequencies stabilize and stop falling. The LS-DYNA software package enables to perform studies of the effect of local damage of the load-bearing structures on the dynamic characteristics during an earthquake with the direct reinforcement of concrete with reinforcing bars and can be used in the calculations and the design of buildings and structures.