Scaling Analysis Method Research Articles

How does financial policy support the development of China's fishery? Characteristics, experience and prospects

Fishery financial policy is a vital tool to promote the development of the fishery economy. Based on 179 policy documents, this article traces the evolution of fishery financial policies in China since 1982, using the method of word frequency analysis, co-word analysis and multi-dimensional scaling analysis. According to the policy characteristics, China's fishery financial policies can be divided into three stages: the germination period (1982–2000), the preliminary development period (2001–2010), and the comprehensive development period (2011–2020). The policy focuses have shifted from supplying traditional finance service to realizing sustainable development of fishery resources and offering better services to fishermen. Several deficiencies have been observed during the policy implementation, so the paper suggests the following improvement strategies: increasing government support for fishery finance, enriching the collateral portfolio, innovating equity financing models for fishery enterprises and designing scientific maricultural insurance products.

Development of a new sensory analysis methodology for predicting wine aging potential. Application to champagne reserve wines

A new analysis method was developed to evaluate a sensory concept for food products. The concept “wine aging potential” is used by experts and professionals to describe the inherent capacity of great red or whites to develop qualitatively during aging. Previous authors who studied wine aging potential proposed a method of evaluation using a one-dimensional scale. However, during the concept description task, wine aging potential was linked to three dimensions: time; wine quality, and potential. The methods available in quantitative sensory analysis, such as Profile, Free Choice Profile and Flash Profile, do not allow for quantifying more than two dimensions simultaneously. A new, 3-dimensional scale and sensory analysis method was developed, based on cognitive definitions from professional tasters concerning the aging potential of champagne reserve wines.This method, called “projective categorization,” introduces several dependent variables, offering tasters a visual tool to evaluate the projected development of a wine’s quality over time on different dynamics.A specific, statistical analysis was developed for significant evaluation of wines and judges. This new tool was tested on 33 champagne reserve wines aged from 1 to 29 years. It demonstrated its capability in distinguishing accurately wines with different aging aptitudes. Indications concerning panel consensus and judges’ performance were also provided.This is the first time that a sensory methodology has been developed on the basis of a sensory concept in order to classify products. This method enabled obtaining a precision for categorizing champagne reserve wines linked to the judges’ consensus. The quality and reliability of the results seemed, in agreement with all sensory analysis methods, to be dependent on the number of judges.

The Application of Cluster Analysis and Scaling Analysis Methods for the Assessment of Dams in Terms of Heritage Preservation

ABSTRACT Heritage preservation is a broad topic that affects virtually all fields of human activity. One of them is industrial heritage which is, among others, represented by the construction of dams. The assessment of such constructions, which could be important from the point of view of heritage preservation and potentially be declared cultural monuments, should be based on the analysis and historical development of the particular society. It should reveal which constructions can be found in a selected area and how they are divided. Dams include hundreds of constructions. A professional heritage officer, who is to decide whether to process and submit a proposal for the inclusion of a dam in the list of cultural heritage, thus faces the problem of how to carry out the analysis effectively. This article describes a procedure for using both cluster analysis and scaling method to categorise a set of 119 dams to be able to identify exceptional, so-called iconic, structures. By comparing the selection of significant representatives of dams created by the application of the two methods, which proved to be appropriate in terms of the industrial heritage preservation, a majority concordance is reached.

Scaling analysis and evaluation for the design of integral test facility of HPR1000 containment (PANGU)

This paper summarized the key aspects of the scaling analysis method adopted in the design of the integral test facility for the containment of HPR1000 -an advanced pressurized water reactor featuring both active and passive safety systems in reactor coolant (RCS) and containment. Based on the existing scaling analysis methods for complicated thermal-hydraulic systems, i.e. Hierarchical Two-Tiered Scaling (H2TS) method and Three-Level Scaling method, the present study developed a specific scaling analysis method which did not only provide theoretical derivation of scaling parameters and ratios, but also implemented the scaling criteria in the engineering design of the HPR1000 containment integral test facility (PANGU), with an evaluation of distortions in the final design. This approach allowed the theoretical scaling parameters can be reasonably adjusted to meet the boundary limits/conditions of the facility design. The scaling analysis and evaluation of so-designed test facility ensured the experimental results are applicable to verify the safety functions of the HPR1000 containment coping with representative accident scenarios.

Theoretical analysis of equatorial near-inertial solitary waves under complete Coriolis parameters

An investigation of equatorial near-inertial wave dynamics under complete Coriolis parameters is performed in this paper. Starting from the basic model equations of oceanic motions, a Korteweg de Vries equation is derived to simulate the evolution of equatorial nonlinear near-inertial waves by using methods of scaling analysis and perturbation expansions under the equatorial beta plane approximation. Theoretical dynamic analysis is finished based on the obtained Korteweg de Vries equation, and the results show that the horizontal component of Coriolis parameters is of great importance to the propagation of equatorial nonlinear near-inertial solitary waves by modifying its dispersion relation and by interacting with the basic background flow.

The Relationship of Learning Entrepreneurship, Enterprise Motivation, And the Family Environment with Enterprise Interest in Students

Many of Bunda's Tourism Diploma graduates are still unemployed because some are less interested in becoming self-employed. It because students are not motivated to become entrepreneurs, and the family environment is not yet supported. This study aimed to measure: the relationship between entrepreneurial learning outcomes, entrepreneurial motivation, and family environment with interest in entrepreneurship. This type of research is descriptive correlational. This research population is all students of the Hospitality study program of the Bunda Padang Tourism Academy, batch 2017 and 2018, totaling 61 students. The sample in this study were 61 students using the total sampling technique. The data collection instrument used a questionnaire using a Likert scale and data analysis methods, including simple correlation and multiple correlations. Research is expected to increase students' entrepreneurial knowledge through attitudes, knowledge, and skills to overcome entrepreneurial tasks' complexity, providing real experiences for students to carry out entrepreneurial practices.

Turing-Hopf bifurcation analysis in a diffusive Gierer-Meinhardt model

The reaction-diffusion Gierer-Meinhardt system in one dimensional bounded domain is considered in the present paper. The Hopf bifurcation is investigated, which is found to be degenerate. With the aid of Maple, the normal form associated with the degenerate Hopf bifurcation is obtained to determinate the existence of Bautin bifurcation. We get the universal unfolding for the Bautin bifurcation so that we can identify the stability of periodic solutions. Then, the existence of the codimension-two Turing-Hopf bifurcation is further investigated. To research the spatiotemporal dynamics of the model near the Turing-Hopf bifurcation point, the method of the multiple time scale analysis is adopted to derive the amplitude equations. It is noted that the Gierer-Meinhardt model may show the spatial, temporal or the spatiotemporal patterns, such as the nonconstant steady state, spatially homogeneous periodic solutions and the spatially inhomogeneous periodic solutions. Finally, some numerical simulations are presented to demonstrate the applicability of the theoretical results.

What Is the Consensus from Multiple Conclusions of Future Crop Yield Changes Affected by Climate Change in China?

Many studies have shown that climate change has a significant impact on crop yield in China, while results have varied due to uncertain factors. This study has drawn a highly consistent consensus from the scientific evidence based on numerous existing studies. By a highly rational systematic review methodology, we obtained 737 result samples with the theme of climate change affecting China’s crop yields. Then, we used likelihood scale and trend analysis methods to quantify the consensus level and uncertainty interval of these samples. The results showed that: (i) The crop yield decrease in the second half of the 21st century will be greater than 5% of that in the first half. (ii) The crop most affected by climate change will be maize, with the decreased value exceeding −25% at the end of this century, followed by rice and wheat exceeding −10% and −5%. (iii) The positive impact of CO2 on crop yield will change by nearly 10%. Our conclusions clarify the consensus of the impact of future climate change on China’s crop yield, and this study helps exclude the differences and examine the policies and actions that China has taken and should take in response to climate change.

Examining Causal Relationships of Tangible and Intangible Drivers Influencing Performance Assessment and Impacting Job Satisfaction Curve of Healthcare Professionals. A Study Done at Rashid Hospital, a Government Healthcare Facility in the U.A.E

Over the years, many studies have been conducted to comprehend the value of job fulfilment and the impact it has on the employee’s job performance. To be able to grasp this concept in the healthcare sector which is remarkably hectic, demanding and time sensitive, the performance of healthcare professionals is key. The cause being that job performance from healthcare professionals are correlated to facets such as efficiency, experience, management and quality which are all interlinked with the safety and well-being of the patients. Hence, the main goal of this research is to recognize the tangible and intangible drivers of job satisfaction and the impact it has on the healthcare professional’s performance. This study was carried out with a deductive approach with methods of both qualitative and quantitative which aided in finding out the literature gap currently present in the healthcare sector. As this study was conducted during the pandemic, the researcher was able to attain 68% of responses out of the 100%. However, with the pandemic, the researcher was able to unravel new variables of job satisfaction amongst healthcare professionals. Multiple theories and models of job satisfaction and job performance were tested to see which one applies to the Rashid hospital, Dubai, UAE. By figuring out the challenges faced by the healthcare professional with and without the pandemic allows the researcher and management team to build improvement plans.With multiple pie charts, bar charts and a 5-point Likert Scale Analysis Method, ranking and prioritizing the tangible and intangible drivers of job satisfaction amongsthealthcare professionalshelped to understand the level of impact their current employment has to their performance. With demonstration of summary output, regression analysis, residual output, R square and adjusted R square represents a pure study and validation of results. With the P value being <0.05 proves that this study is significantly strong.By adding theoretical debates on whether job satisfaction impacts job performance, this study concludes that this is a multifaceted concept and with the appropriate variables and methods, enhancing the performance will be at an advantage. Therefore, it is recommended that healthcare management team provides support in all aspects of the variables to improve the healthcare professional’s performance and ultimately increase the well-being of the patients.

Analysis of the convective heat transfer characteristics in a two-dimensional cavity subjected to an external magnetic field

Natural convection heat transfer in the presence of a magnetic field has received considerable attention in the past few decades because of its various applications in industrial installations. In particular, a large number of numerical studies analyzing the effect of the magnetic field on natural convection in a two-dimensional cavity have been performed. In this work, we propose to study the main characteristics of the convective heat transfer of pure fluids and nanofluids in a two-dimensional cavity differentially heated and subjected to an external magnetic field. The scale analysis method is used first to obtain a correlation giving the heat transfer rate, which is then developed to predict the behavior of the heat transfer rate for pure fluids and nanofluids. To verify the reliability of the theoretical predictions, a numerical study is also carried out. The results show that the proposed correlation predicts well the convective heat transfer characteristics obtained numerically.

Utilization of Classical Scaling Technique in Sustaining Fault Detection Performance in Process Monitoring


 
 
 
 Multivariate Statistical Process Monitoring (MSPM) fundamentally adopts the conventional Principal Component Analysis (cPCA) as the main platform for data compression. The main challenge though, the association nature of most industrial process variables are highly non-linear. As a result, the risks of applying the conventional approach of MSPM within this context may include sluggish or failed in detection, misinterpretation of signals, incorrect fault diagnosis and also inflexible as well as insensitive to changing of operating modes. In addressing the issue, this paper introduces new sets of monitoring parameters i.e. Sm2, Sr2 and Sr3, which have been derived within the frameworks of Classical Scaling (CMDS) and Procusters Analysis (PA) methods. The overall fault detection performance that applied based on the Tennessee Eastman Process (TEP) cases show that the Sr3 can detect the faults particularly for abnormal events number 3, 9, 15 and 19 in higher rate compared to the cPCA-MSPM system. This proves that the new monitoring statistics work effectively in avoiding missed detection during monitoring which cannot be addressed effectively by the traditional monitoring system.
 
 
 

Kajian Keberlanjutan Agribisnis Hortikultura di Kabupaten Sumba Barat

West Sumba is one of the regencies in Sumba island province of East Nusa Tenggara. Horticulture is a popular agricultural product there. The market potential for horticultural commodities in West Sumba is quite large but its production is still low. For this reason, the research was conducted with the aim of (1) knowing the sustainability status of horticultural agribusiness in West Sumba and (2) knowing the dominant attributes affecting the sustainability status of horticultural agribusiness development in the region. This is interesting to be examined since the sustainability is related to the ability of an area to increase production in the agricultural sector including the horticulture sub-sector. This study used the Multi-Dimensional Scaling (MDS) analysis method, which is modification of the Rapid Appraisal of the Status of Farming (RAP-farm) method. MDS analysis results show that (1) West Sumba Regency is in a fairly sustainable status for social and institutional dimensions while for the dimensions of ecology, economics and technology are in a less sustainable status and (2) the dominant attributes affecting each dimension are (a ) the ecological dimension is affected by the level of land slope and the level of erosion that occurs; (b) the economic dimension is affected by the management of horticultural products, the contribution to income per capita; (c) the social dimension is influenced by the existence of horticultural households and of government services; (d) technological dimensions by soil and water conservation technology and the application of technology; (e) the institutional dimension is influenced by conflicts between farmer groups, the availability of marketing institutions and the number of agricultural extension instructor.

Gravity-capillary waves modulated by linear shear flow in arbitrary water depth* *Project supported by the National Natural Science Foundation of China (Grant No. 41830533) and the National Key Research and Development Program of China (Grant Nos. 2016YFC1401404 and 2017YFA0604102).

Considering that the fluid is inviscid and incompressible and the flow is irrotational in a fixed frame of reference and using the multiple scale analysis method, we derive a nonlinear Schrödinger equation (NLSE) describing the evolution dynamics of gravity-capillary wavetrains in arbitrary constant depth. The gravity-capillary waves (GCWs) are influenced by a linear shear flow (LSF) which consists of a uniform flow and a shear flow with constant vorticity. The modulational instability (MI) of GCWs with the LSF is analyzed using the NLSE. The MI is effectively modified by the LSF. In infinite depth, there are four asymptotes which are the boundaries between MI and modulational stability (MS) in the instability diagram. In addition, the dimensionless free surface elevation as a function of time for different dimensionless water depth, surface tension, uniform flow and vorticity is exhibited. It is found that the decay of free surface elevation and the steepness of free surface amplitude change over time, which are greatly affected by the water depth, surface tension, uniform flow and vorticity.

The barotropic Rossby waves with topography on the earth’sδ-surface

AbstractThe Rossby solitary waves in the barotropic vorticity model which contains the topography on the earth’sδ-surface is investigated. First, applying scale analysis method, obtained the generalized quasi-geostrophic potential vorticity equation (QGPVE). Using The Wentzel–Kramers–Brillouin (WKB) theory, the evolution equation of Rossby waves is the variable-coefficient Korteweg–de Vries (KdV) equation for the barotropic atmospheric model. In order to study the Rossby waves structural change to exist in some basic flow and topography on theδ-surface approximation, the variable coefficient of KdV equation must be explicitly, Chebyshev polynomials is used to solve a Sturm-Liouville-type eigenvalue problem and the eigenvalue Rossby waves, these solutions show that the parameterδusually plays the stable part in Rossby waves and slow down the growing or decaying of Rossby waves with the parameterβ.

Evolution and modulational instability of interfacial waves in a two-layer fluid with arbitrary layer depths

A nonlinear Schrödinger equation (NLSE) describing the evolution of interfacial waves in a gravitationally stable, inviscid, incompressible, and irrotational two-layer fluid with arbitrary constant layer depths is derived using the multiple scale analysis method. The modulational instability (MI) of the interfacial waves is then analyzed using this NLSE. It is shown that the unstable region shrinks as the density ratio of the two layers increases and as each layer gets thinner. A requirement for unstable waves is that both the upper and lower layers are thicker than the critical depths for those layers. The critical depth of each layer as a function of the density ratio of two layers is obtained by curve fitting and used as a criterion for MI. Moreover, nine cases with various upper- and lower-layer depths are investigated. The relationships of the dark soliton to modulational stability and the bright soliton to MI are discussed in each case. In the unstable regions of the nine cases, it is found that the steepness of the perturbed interface amplitude increases, and the perturbed interface elevation decays more rapidly as the depth of each layer increases. Both the height and the steepness of the perturbed interface elevation increase with increasing density ratio of the two layers.

A scale analysis of liquid metal natural convection between vertical plates under a transverse magnetic field

Liquid metal natural convection heat transfer under a transverse magnetic field is a fundamental problem in a fusion reactor. Several previous experimental and numerical studies have addressed this problem, however, few studies have focused in the development of correlations giving the heat transfer rate. The most important result in this problem is the existence of a maximum value of the heat transfer rate greater than its value in the absence of the magnetic field. In this paper, we propose to develop a correlation giving the heat transfer rate of the NaK liquid metal through a vertical wall heated by a uniform heat flux and subjected to a transverse magnetic field perpendicular to the thermal gradient. The scale analysis method was used to obtain the general form of the heat transfer rate correlation, while the previous experimental data were used to determine the various parameters and weight coefficients introduced. The results show that the proposed correlation predicts well the heat transfer behavior of the NaK liquid metal in the presence of a transverse magnetic field.

The quasi-steady-state approximations revisited: Timescales, small parameters, singularities, and normal forms in enzyme kinetics

In this work, we revisit the scaling analysis and commonly accepted conditions for the validity of the standard, reverse and total quasi-steady-state approximations through the lens of dimensional Tikhonov–Fenichel parameters and their respective critical manifolds. By combining Tikhonov–Fenichel parameters with scaling analysis and energy methods, we derive improved upper bounds on the approximation error for the standard, reverse and total quasi-steady-state approximations. Furthermore, previous analyses suggest that the reverse quasi-steady-state approximation is only valid when initial enzyme concentrations greatly exceed initial substrate concentrations. However, our results indicate that this approximation can be valid when initial enzyme and substrate concentrations are of equal magnitude. Using energy methods, we find that the condition for the validity of the reverse quasi-steady-state approximation is far less restrictive than was previously assumed, and we derive a new “small” parameter that determines the validity of this approximation. In doing so, we extend the established domain of validity for the reverse quasi-steady-state approximation. Consequently, this opens up the possibility of utilizing the reverse quasi-steady-state approximation to model enzyme catalyzed reactions and estimate kinetic parameters in enzymatic assays at much lower enzyme to substrate ratios than was previously thought. Moreover, we show for the first time that the critical manifold of the reverse quasi-steady-state approximation contains a singular point where normal hyperbolicity is lost. Associated with this singularity is a transcritical bifurcation, and the corresponding normal form of this bifurcation is recovered through scaling analysis.

Geochemical characteristics and the provenance of aeolian material in the Hexi Corridor Desert, China

The Hexi Corridor Desert is in Gansu Province, northwestern China. The material provenance of desert formation and development is the primary factor of aeolian geomorphology, and it is still not fully understood in the Hexi Corridor Desert. To identify sources of aeolian sand in the formation of dunes in the Hexi Corridor Desert, we investigated 12 sites and collected 70 samples from the dune surface. This study used ratios between Na2O/Al2O3 versus K2O/Al2O3 and SiO2/Al2O3, Ba/Sr versus Rb/Sr and Rb/Sr versus Ce/Sr as well as CaO and Cl composition to identify sediment provenance. CaO was enriched relative to the composition of the upper continental crust (UCC), consistent with a previous study conducted in the Taklamakan and Badain Jaran deserts on adjacent fluvial, lacustrine and gravel deserts, but it differed from one study conducted in the Kumtagh and Tengger deserts. Cl concentrations differed in lacustrine and sand sediments, being higher in lacustrine sediments, followed by sand sediment. Sand sample geochemistry was similar throughout, indicating that sources of sand formation were also similar, which was confirmed by the multidimensional scaling (MDS) and principal component analysis (PCA) methods. Additionally, based on regional topography, the Hexi Corridor acts as a sediment sink not only for sediment from the Qilian Mountains but also for sediment from the Beishan Mountains. The MDS and PCA approaches also indicated that sediment provenance was similar in the Hexi Corridor and the Tengger, Badain Jaran and Kumtagh deserts. Therefore, it can be concluded that dry fluvial deposits, alluvial deposits and lacustrine sediments that combined comprised sand dune provenance were the sources of sand in the Hexi Corridor Desert, and these deposits derived from the Qilian Mountains in the southwest and the Beishan Mountains in the north through alluvial processes.

PERAN KELOMPOK TANI ESA ATE DALAM USAHATANI JAGUNG DI KELURAHAN MAPANGET BARAT KECAMATAN MAPANGET KOTA MANADO

The purpose of this study was to determine the role of the Esa Ate Farmer Group in Corn Farming in Mapanget Barat Village, Mapanget District, Manado City, North Sulawesi Province. The research conducted from July 2019 to September 2019. Respondent selection method was Census which is all members of the Esa Ate Farmer Group, as respondent, consisting of administrators and members with a total of 15 people. Primary data collection methods were obtained from interviews and questionnaires. The research method used is a Likert scale analysis method. Whereas secondary data was obtained from the Mapanget West Kelurahan Office of Mapanget Sub-District, Manado City, North Sulawesi Province. The results showed that the Interval Criteria were on a scale of 45 to 135 or with a role status with a percentage interpretation of 60%. This shows that the Esa Ate Farmer Group still has a role both as the Learning Class and the Cooperative Forum and also has a role in procuring production facilities within the Esa Ate Farmer Group.*eprm*

Comfort Evaluation and Application of Office Chair Based on FAHP

In order to establish an evaluation system of office chair comfort, this paper comprehensively and quantitatively analyzed the qualitative problem of comfort. Typical office chair samples were selected through cluster analysis and multi-dimensional scale analysis methods, and FAHP was used to establish the evaluation model from four aspects: physical scale, adjustability, support and synergy. Then, the model was used to evaluate the comfort of three office chair types. The results showed that it is feasible to apply FAHP to product evaluation of office chairs, and this evaluation model can provide a quantitative indicators system of seat products.