scholarly journals Population Growth Models of Forest Trees for Conservation Management: Case of Teak (Tectona Grandis) Forest in Begal, East Java, Indonesia

2018 ◽  
Vol 25 (4) ◽  
pp. 169
Author(s):  
Novriana Sumarti ◽  
Mharta A. Wardana ◽  
Nuning Nuraini
Keyword(s):  
Markov Chain ◽  
Growth Models ◽  
Good Condition ◽  
Tectona Grandis ◽  
Leslie Matrix ◽  
Total Production ◽  
Wood Production ◽  
Teak Wood ◽  
The Government ◽  
Future Condition

Based on 2010 FAO report, teak forest and plantation in Indonesia covers 1,269 million hectares or 7 per mill of total area of Indonesia. It can be found dominantly in Central and East Java. PT Perhutani, Indonesia has responsible for management of the government owned forests in the islands of Java and Madura. Based on 2007 data, the teak wood production is 517,627 m3 and the highest percentage, which is 37% of total production, is coming from East Java. In this paper, we develop growth population models using Leslie Matrix and Markov Chain in order to predict the future condition based on the current condition. The models are implemented into data from Teak Forest in Begal, East Java, that covers 2,052.8 hectares and consists of 114 sites. The result from the first model using Leslie Matrix shows that it needs 16 years from year 2011 that the sustainable condition of the forest can be achieved. The result from the implementation of the second model using Markov Chain into the existing data shows that the condition of the teak forest can be classified as quite critical because the good condition part based on its density of the early age group (0 - 4 years) has potential to become the worst condition before its harvest time.

scholarly journals SURFACE CHEMICAL AND COLOR CHARACTERIZATION OF JUVENILE TECTONA GRANDIS WOOD SUBJECTED TO STEAM-DRYING TREATMENTS

2016 ◽  
Vol 23 (01) ◽  
pp. 1550091 ◽  
Author(s):  
ALEXANDER BERROCAL ◽  
RÓGER MOYA ◽  
MARÍA RODRIGUEZ-SOLIS ◽  
RICARDO STARBIRD ◽  
FREDDY MUÑOZ
Keyword(s):  
Color Change ◽  
Tectona Grandis ◽  
Surface Chemical ◽  
Surface Color ◽  
Teak Wood ◽  
Text Color ◽  
The Fourier Transform ◽  
Moisture Conditions ◽  
Steam Drying

The color of Tectona grandis wood is an attribute that favors its commercialization, however, wood color from fast-growth plantation trees is clear and lacks uniformity. The aim of this work is to characterize steamed teak wood by means of the Fourier transform infrared spectroscopy (FTIR) and [Formula: see text] color systems. Two moisture conditions (green and 50%) and two grain patterns (flat and quarter) of boards were analyzed through the application of different steaming times (0, 3, 6, 9, 12, 15 and 18[Formula: see text]h). The FTIR results showed that the bands at 1158, 1231, 1373 and 1419[Formula: see text]cm[Formula: see text] did not show any change with steaming, whereas the bands at 1053, 1108, 1453, 1506, 1536, 1558, 1595, 1652, 1683, 1700 and 1733[Formula: see text]cm[Formula: see text] presented a decrease in the intensity with the steaming time. The band at 1318[Formula: see text]cm[Formula: see text] was the only one that increased. Lightness ([Formula: see text]) was the most affected parameter, followed by yellowness ([Formula: see text]), while redness ([Formula: see text]) showed the smallest change. Surface color change ([Formula: see text]) presented the lowest value between 3[Formula: see text]h and 6[Formula: see text]h of steam-drying in the boards with flat grain, whereas for boards with quarter grain, the smallest [Formula: see text] value was obtained after 18[Formula: see text]h of steaming.

scholarly journals EVALUASI PENYEDIAAN SARANA DAN PRASARANA DI PERUMAHAN PURI DINAR MAS SEMARANG

2016 ◽  
Vol 4 (1) ◽  
pp. 58
Author(s):  
Tiasa Adimagistra ◽  
Bitta Pigawati
Keyword(s):  
Quantitative Method ◽  
Environmental Planning ◽  
Good Condition ◽  
Urban Housing ◽  
User Perception ◽  
Community Needs ◽  
The Government ◽  
Quantitative Descriptive ◽  
The City ◽  
Descriptive Method

Community needs for settlement area, especially in the city of Semarang increase rapidly, so the government in 2005 make a program called 100,000 RSS (Simple Healthy House) to meet those needs. RSS is a settlement with facilities and infrastructure that are inadequate. The construction of facilities and infrastructure of the settlement should refer to the SNI 03-1733-2004 on Procedures for Environmental Planning in Urban Housing. The research objective is to evaluate the facilities and infrastructure based on ISO and user perception in Puri Dinar Mas Semarang. The method which used to analyze are the quantitative descriptive and comparative methods. The descriptive quantitative method is used to identify the availability and existing condition with the user's perception of the infrastructure Puri Dinar Mas, while the comparative descriptive method is used to compare the existing condition with SNI and comparing the user's perception of the condition of housing infrastructure based on the observation. There is a 61% infrastructure is available based on SNI and 70% in good condition. Based on the results of the comparison with SNI only 32% meet the standard. The results of the perception of users 80% are stated that the condition of facilities and infrastructure that exist in this housing is good, meanwhile the comparison of existing condition with the perception of users found that 84% is good, 8% is bad, and the remaining 8% is moderate.

scholarly journals Implementation of Markov Chain in Detecting Opportunities for Natural Disasters in Klaten (Case Study: Number of Floods, Landslides, and Hurricanes 2019-2020)

2021 ◽  
Vol 1 (2) ◽  
pp. 58-67
Author(s):  
Afdelia Novianti ◽  
Dina Tri Utari
Keyword(s):  
Markov Chain ◽  
Natural Disasters ◽  
Human Life ◽  
The Other ◽  
Future Period ◽  
The Past ◽  
Current Period ◽  
Markov Chain Method ◽  
The Government

Java Island is one of the areas that is very fertile and densely populated, but on the other hand, Java Island is also one of the areas that is most frequently hit by natural disasters, one of which is Klaten Regency. Natural disaster itself is an event that threatens and disrupts human life caused by nature. Some of the natural disasters that often occur simultaneously in Klaten Regency are floods, landslides, and hurricanes. These three disasters usually occur during the rainy season. This of course makes the government need to take action by seeing the large chance of a disaster occurring in order to optimize disaster management. Then research will be carried out that aims to determine the chances of natural disasters occurring in the next few years. Forecasting will be carried out using the Markov chain method, with this method the probability value of the future period can be estimated using the current period probability value based on the characteristics of the past period. So that the value of the steady state chance of floods and landslides in period 36 (December 2023) and hurricanes in period 15 (March 2022) with the chances of a disaster are 34.21%, 15.38%, and 73.53%, respectively.Received August 31, 2021Revised October 27, 2021Accepted November 11, 2021

scholarly journals Relationship of the cellular structure of teak wood (Tectona grandis L. f.) with different ages and growth sites

2017 ◽  
Vol 24 (1) ◽  
pp. 101-114
Author(s):  
Rául Rodríguez-Anda ◽  
◽  
Francisco J. Fuentes-Talavera ◽  
José A. Silva-Guzmán ◽  
Hilda Palacios-Juárez ◽  
...  
Keyword(s):  
Cellular Structure ◽  
Tectona Grandis ◽  
Different Ages ◽  
Teak Wood ◽  
Relationship Of

scholarly journals An approach for experiment evaluations for multiple harvests crops based on non-linear regression

2021 ◽  
Vol 39 (3) ◽  
pp. 250-257
Author(s):  
Alessandro Dal’Col Lúcio ◽  
Maria Inês Diel ◽  
Bruno G Sari
Keyword(s):  
Linear Regression ◽  
Growth Models ◽  
Fruit Production ◽  
Production Cycle ◽  
Total Production ◽  
Biological Processes ◽  
Production Potential ◽  
Non Linear ◽  
Using Data ◽  
The Moment

ABSTRACT Biologically based growth models can be an alternative in identifying the productive response of multiple harvest vegetables. By interpreting the estimates of the parameters of the models, it is possible to estimate the total production, the rate of fruit production, and the moment when the crop reaches its maximum production potential. Besides, by estimating confidence intervals, these responses can be compared between genotypes or between different treatments. Therefore, the purpose of this manuscript is to present a literature review, and a detailed step-by-step, to interpreting the evolution of the production cycle of vegetables with multiple harvests crops based on non-linear regression. All the requirements that must be met in this type of analysis were presented in detail based on non-linear regression, providing the necessary steps for this type of analysis in details. Demonstration is given using data from strawberry cultivation along with the associated R scripts and interpretation of analysis output in material supplemental. This approach can allow for more relevant inferences than standard means analyses through better examination and modeling of the underlying biological processes.

scholarly journals Development Trend of Smart Home Industry A case study of Haier Smart Home

2021 ◽  
Vol 14 ◽  
pp. 194-207
Author(s):  
Yiru Pan ◽  
Yuehan Wu ◽  
Yuanwu Xin
Keyword(s):  
Smart Home ◽  
Product Life Cycle ◽  
Good Condition ◽  
Development Trend ◽  
Sales Channels ◽  
Product Logic ◽  
Growth Space ◽  
Asset Turnover ◽  
Home Appliance ◽  
The Government

In recent years Smart Home appliance is a research hotspot in the home appliance industry. It is the product of a series of high-end technologies such as the Internet of Things, 5G, and AI, and is in the growth stage of the product life cycle. In this paper, the PESTAL analysis method and Porter's Five Forces model are used to analyze the environment and competition in the Chinese smart home industry. It is found that the generation of Smart Home conforms to the upgrading of social demand and economic development, so it is supported by the government. However the industry now lacks a unified technology connector, resulting in the fragmentation and isolation of current products from different producers. This paper also takes Haier Smart Home as an example, focusing on its analysis of product logic chain and of financial status. Through the establishment of seven brands, Haier Smart Home has created a perfect product system, which can meet the multi-level demand of middle and high-end, and ranks high in sales. Contrast to its competitors, Haier Smart Home's complex ownership structure and overlapping sales channels do harm to the efficiency of its operation, which eventually result in a low-profit margin, but its sales are high, and asset turnover also maintains at a good level, so the company overall operation is in good condition, and its future growth space is large.

scholarly journals Evaluation of Coupling and Coordinated Development of Marine Economic Policy and Marine Service Industry

2021 ◽  
Vol 235 ◽  
pp. 01011
Author(s):  
Zuoliang Lv ◽  
Bin Li
Keyword(s):  
Economic Policy ◽  
Service Industry ◽  
Causal Effect ◽  
Good Condition ◽  
Economic Policies ◽  
Coordinated Development ◽  
Development Level ◽  
Main Factors ◽  
The Government ◽  
Coordination Degree

This article studies the coordinated development of marine economic policy and marine service industry by constructing a system for evaluating marine economic policy and marine service industry indicators and applying a coupled coordination degree model, and analyzes its development laws. The research shows that the coordinated development level of marine economic policy and marine service industry is on the rise, the interaction level among the elements in the system is enhanced, the cyclic cumulative causal effect and cluster advantage are enhanced, and the coordinated development level is adjusted from primary imbalance to primary coordination. Under the comprehensive effect of the stable curve law of the development of marine economic policies and the stable rising law of the development of marine service industry, the development of marine service industry is in good condition, and the development of marine economic policies lags behind. To further promote the high-quality development of marine service industry, the government can strengthen Guide the connection between the main factors of the two systems and the positive and dynamic response to further promote the coordinated development of the two.

The Bishop of Jamaica and Slave Instruction

1975 ◽  
Vol 26 (4) ◽  
pp. 363-378 ◽  
Author(s):  
Mary Turner
Keyword(s):  
West Indies ◽  
House Of Commons ◽  
Anglican Church ◽  
The West ◽  
Religious Instruction ◽  
Reform Programme ◽  
Windward Islands ◽  
Moral Instruction ◽  
The Government ◽  
Future Condition

In July 1824 two new bishoprics were organised in the West Indies, the bishopric of Jamaica including Honduras and the bishopric of Barbados and the Leeward and Windward islands, to promote the activity of the Anglican Church among the slave population. A series of resolutions passed in the House of Commons in May 1823 committed the government to reforms intended to prepare the slaves for eventual freedom, and primary importance was given to their need for religious instruction. Knowledge of Christianity was regarded as an ‘indispensable necessity to…the foundation of every beneficial change in their character and future condition’. Most of the reform programme, which included the abolition of flogging for women, the admission of slave evidence in court and the improvement of manumission facilities, involved revision of existing slave codes and implementation, therefore, depended, outside the crown colonies, on the cooperation of the island assemblies. The imperial government, however, was free to promote religious instruction and chose to appoint the bishops. Under their supervision the Anglican Church in the West Indies was to become a missionary force. As the Secretary of State explained to the governor of Jamaica, ‘his Majesty's Government have been anxious to prove the deep interest which they feel in the encouragement of the religious and moral instruction of the Negroes, by at once taking upon themselves the whole charge of placing the Clergy of the West Indies under Episcopal control’. Funds were voted to pay the bishop of Jamaica £5,600 p.a. and salaries were also provided for six auxiliary curates and an archdeacon to help to supervise the clergy.

Ergodicity of age structure in populations with Markovian vital rates. II. General states

1977 ◽  
Vol 9 (01) ◽  
pp. 18-37 ◽  
Author(s):  
Joel E. Cohen
Keyword(s):  
Markov Chain ◽  
Age Structure ◽  
Joint Distribution ◽  
Sample Path ◽  
Initial Distribution ◽  
Transition Function ◽  
Leslie Matrix ◽  
Vital Rates ◽  
Closed Population ◽  
Leslie Matrices

The age structure of a large, unisexual, closed population is described here by a vector of the proportions in each age class. Non-negative matrices of age-specific birth and death rates, called Leslie matrices, map the age structure at one point in discrete time into the age structure at the next. If the sequence of Leslie matrices applied to a population is a sample path of an ergodic Markov chain, then: (i) the joint process consisting of the age structure vector and the Leslie matrix which produced that age structure is a Markov chain with explicit transition function; (ii) the joint distribution of age structure and Leslie matrix becomes independent of initial age structure and of the initial distribution of the Leslie matrix after a long time; (iii) when the Markov chain governing the Leslie matrix is homogeneous, the joint distribution in (ii) approaches a limit which may be easily calculated as the solution of a renewal equation. A numerical example will be given in Cohen (1977).

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