Ammonia elimination processes in stabilisation and high-rate algal pond systems

1995 ◽  
Vol 31 (12) ◽  
pp. 303-312 ◽  
Author(s):  
E. Gómez ◽  
C. Casellas ◽  
B. Picot ◽  
J. Bontoux
Keyword(s):  
Path Analysis ◽  
Total Nitrogen ◽  
Structural Equation ◽  
Structural Equation Models ◽  
Ammonia Concentration ◽  
High Rate ◽  
Coefficient Of Determination ◽  
Nitrogen Input ◽  
Analysis Technique ◽  
Methodological Considerations

Stabilisation pond (SP) and high-rate algal pond (HRAP) wastewater treatment systems are based on the same processes, but differ in their capacity to remove ammonia. This study analyzes the processes concerning ammonia elimination. The different factors studied are: (i) light irradiance and temperature, (ii) phytoplankton uptake, and (iii) chemical characteristics affecting ammonia concentration. The variables relevant to these processes have been used in path analysis studies. Different variables describing the studied processes have been used to quantify the different phenomena. A conceptual model has been developed, and applied to each pond. Path analysis technique has been applied. It is a causal modelling technique. The evaluation of causal models involves theoretical, methodological and statistical analysis. Theoretical considerations have been defined in the list of the processes studied. Methodological considerations involve the variable measurements on a defined time-scale. The statistical aspect consists of the evaluation of structural equation models. The results of these studies show that the principal phenomena affecting ammonia in SP systems are temperature, pH, and total nitrogen input. In HRAP systems ammonia variability is directly linked to pH, temperature, nitrite and total nitrogen input, and indirectly linked to chlorophyll a concentration and pH. The percentage of observed variability given by the models (R2 =coefficient of determination) ranges between 46% and 60.8%.

scholarly journals ANALISIS STRUKTUR GAJI TERHADAP KEPUASAN KERJA, KOMITMEN ORGANISASIONAL DAN TURNOVER INTENTION (STUDI KASUS PADA RUMAH SAKIT UMUM DAERAH AL-MULK KOTA SUKABUMI)

2020 ◽  
Vol 11 (1) ◽  
pp. 75
Author(s):  
Yathestha Yoga Dwi Rahestha ◽  
Budi Hartono ◽  
Gofur Ahmad
Keyword(s):  
Path Analysis ◽  
Turnover Intention ◽  
Structural Equation ◽  
Structural Equation Models

Dampak dari struktur gaji merupakan fenomena yang sering terjadi pada sebuah perusahaan dimana karyawan memiliki keinginan keluar dari perusahaan karena rendahmya kegairahan kerja karyawan serta ketidakpuasan karyawan saat bekerja yang dapat mengakibatkan kondisi pekerjaan yang tidak nyaman sehingga akan terjadi turnover intention yang tinggi. Penelitian ini bertujuan untuk menganalisis pengaruh stuktur gaji teradap kepuasan kerja, komitmen organisasional dan turnover intention. Metode penelitian ini adalah penelitian kuantitatif dengan model SEM (Structural Equation Models) dengan tehnik analisis jalur (path analysis). Penelitian ini dilakukan pada Agustus-Oktober 2019 pada 118 sampel karyawan RSUD Al-Mulk Kota Sukabumi dengan teknik sampling jenuh. Hasil penelitian didapatkan bahwa struktur gaji berpengaruh sebesar 0,58 terhadap kepuasan kerja, sebesar 0,11 terhadap komitmen oganisasional dan sebesar 0,11 terhadap turnover intention. Kepuasan kerja berpengaruh sebesar 0,51 terhadap komitmen organisasional dan berpengaruh sebesar -0,34 terhadap turnover intention. Komitmen organisasional berpengaruh sebesar -0,23 terhadap turnover intention. Kepuasan kerja, komitmen organisasional, dan turnover intention secara simultan berpengaruh signifikan terhadap struktur gaji. Pihak rumah sakit agar memperhatikan permasalahan terkait struktur gaji yang ada untuk meminimalisir terjadinya turnover intention pada karyawan.

scholarly journals ShareSEM: Example and Template R Scripts for SEM, Bayesian, and More

2019 ◽  
Author(s):  
Daniel John Phipps
Keyword(s):  
Path Analysis ◽  
Structural Equation ◽  
Structural Equation Models ◽  
Bayesian Modelling ◽  
Meta Analyses

The ShareSEM project is a simple depository of R scripts for running structural equation models and Bayesian modelling in R. The scripts are designed such that, if measurement items are named consistently, models can be ran with no extra scripting. If models or items differ from the template file, the scripts are designed to be easily adaptable. Bayesian path analysis scripts are also available, with pre-specified priors from meta-analyses of the models.

scholarly journals The Intention of Adopting Information Technology for SMES in Special Region of Yogyakarta

2020 ◽  
Vol 10 (2) ◽  
pp. 205-215
Author(s):  
Tony Wijaya ◽  
Santi Budiman
Keyword(s):  
Information Technology ◽  
Technology Acceptance ◽  
Technology Acceptance Model ◽  
Structural Equation ◽  
Structural Equation Models ◽  
Ease Of Use ◽  
Perceived Usefulness ◽  
Analysis Technique ◽  
Acceptance Model ◽  
Expansion Model

This study aims to examine the intention of adopting information technology for SMEs in DIY through the expansion of the technology acceptance model. This research continues the previous research related to aspects of obstacles experienced in the development of SME businesses. The research conducted a survey using a sample of SMEs entrepreneurs in DIY. The data analysis technique in this study uses structural equation models that are assisted by the AMOS program. Overall, the expansion model of the technology acceptance model in predicting the intention of adopting SME’s information technology in this study fulfils the model fit rules, which means that the model developed in this study is by existing empirical conditions. In particular, the results of the study prove the influence of business competition pressure on the usefulness of SME owners. It also found that ease of use and perceived usefulness have an effect on the attitudes towards SMEs information technology adoption of SMEs owners, and the attitudes on the adoption of SMEs information technology affect the intention of adopting SME’s information technology.

scholarly journals Analisis Pengaruh Communal Activation terhadap Keputusan Membeli untuk Meningkatkan Brand Loyalty (Studi Kasus Teh Botol Sosro Less Sugar)

2013 ◽  
Vol 4 (2) ◽  
pp. 631-643
Author(s):  
Annetta Gunawan
Keyword(s):  
Data Analysis ◽  
Path Analysis ◽  
Brand Loyalty ◽  
Structural Equation ◽  
Online Community ◽  
New Wave ◽  
Marketing Concept ◽  
Analysis Technique ◽  
Data Collection Technique ◽  
And Control

Established in 1974 PT Sinar Sosro is the first bottled ready-to-drink tea producer in Indonesia. In order to fulfill its lovers wherever they are, the newest innovation has been launched, i.e. Teh Botol Sosro Less Sugar, which focuses on diabetics, sportsmen/athletes, and young executives as its target markets. To foster brand loyalty and control the community, PT Sinar Sosro utilizes crowd combo marketing concept, especiallycommunal activation activity that is adjusted with the current New Wave Marketing era, so PT Sinar Sosro can integrate supply and access of Teh Botol Sosro Less Sugar product. The objectives of this research are to analyze the influence of Communal Activation on Buying Decision of Teh Botol Sosro Less Sugar, and to analyze the influence of Communal Activation and Buying Decision on Brand Loyalty of Teh Botol Sosro Less Sugar. The data collection technique used was questionnaire disseminated to the members of Teh Botol Sosro Less Sugar online community, using Likert scale. While the data analysis technique used was Path Analysis. The result of Path Analysis shows the structural equation Y = 0,523 X + 0,8526 ε1 which Communal Activation significantly contributes to Buying Decision at 27,3% and Z = 0,552 X2 + 0,229 Y + 0,7141 ε2 which Communal Activation and Buying Decision simultantly and significantly contribute to Brand Loyalty at 49%.

scholarly journals SENSE AND THINK MARKETING IMPLICATIONS

2020 ◽  
Vol 1 (6) ◽  
pp. 883-891
Author(s):  
Runggu Besmandala Napitupulu ◽  
Nandan Lima Krisna ◽  
Lilis Suriani Gultom
Keyword(s):  
Customer Satisfaction ◽  
Consumer Satisfaction ◽  
Structural Equation ◽  
Structural Equation Models ◽  
Adult Population ◽  
Repurchase Intention ◽  
Repurchase Intentions ◽  
Analysis Technique ◽  
Repeat Purchase

This research is designed to find out and analyze the implications of sense and think marketing for customer satisfaction and their repurchase intention. The object is a vivo smartphone and respodents are the adult population in Medan who have made a repeat purchase. The analysis technique uses structural equation models. The results showed that marketing sense had a significant effect both on customer satisfaction and repurchase intentions; Think marketing has unsignificant effect on both satisfaction and repurchase intentions; Consumer satisfaction has a significant effect on repurchase intentions; Sense and think marketing simultaneously influence customer satisfaction; Sense marketing, think marketing, and satisfaction simultaneously effect on repurchase intentions for vivo smartphones in Medan.

scholarly journals EFFECT OF FINANCING TO DEPOSIT RATIO AND NON-PERFORMING FINANCING OF RETURN ON ASSETS WITH A CAPITAL ADEQUACY RATIO AS VARIABLE INTERVENING IN ISLAMIC BANKING IN INDONESIA IN 2012-2019

2021 ◽  
Vol 1 (2) ◽  
pp. 286-302
Author(s):  
Lutfia Abriet Fajriati ◽  
Asmak Ab Rahman ◽  
Shinta Maharani
Keyword(s):  
Path Analysis ◽  
Commercial Banks ◽  
Quantitative Methods ◽  
Capital Adequacy ◽  
Coefficient Of Determination ◽  
Islamic Banks ◽  
Bank Profitability ◽  
Analysis Technique ◽  
Negative Effect ◽  
Simultaneous Influence

Income in Islamic banks is primarily determined by how much profit or profit the bank receives. Several factors that become indicators of Islamic Bank income are financing funding and the lack of non-performing financing. The greater the financing of third-party funds, the greater the profit to be received, and the higher the NPF level, the lower the bank's profit. Banks with a large enough CAR will be able to increase bank profitability. The NPF variable harms ROA because a decrease in the NPF ratio will increase bank profits. And the CAR variable as an intervening variable also has a positive effect on ROA because an increased CAR will increase bank profitability. Whereas when the NPF decreases, the profitability of Islamic banks also decreases, while when FDR and CAR increase, ROA decreases. The formulation of the problem in this study is whether there is a partial and simultaneous influence of FDR and NPF on ROA?. Is there a partial and simultaneous influence of FDR, NPF, and CAR on ROA. This research is a quantitative study with the population of Islamic Commercial Banks in Indonesia registered with the Financial Services Authority (OJK). In comparison, the sample of this study was determined by purposive sampling method with criteria determined by the researcher so that 4 Islamic commercial banks were obtained from 2012 to 2019. This study used secondary data with research methods using quantitative methods with an associative approach. Data collection techniques were carried out by observation. The data analysis technique used in this research is the associative analysis technique, namely multiple linear regression testing, classical assumption test, hypothesis testing, coefficient of determination test, and path analysis. The results of this study indicate that partially the FDR variable has an insignificant negative effect on ROA, NPF has a significant negative effect on ROA. In comparison, CAR has a positive and significant effect on ROA. Simultaneously, the FDR and NPF variables have no significant effect on ROA. For the results of the path analysis, it is found that the CAR variable cannot mediate the effect of FDR and NPF on ROA.

scholarly journals SELECTION OF VEGETATIVE AND GENERATIVE CHARACTERS OF ARABICA COFFEE BY USING SEQUENTIAL PATH ANALYSIS AND STRUCTURAL EQUATION MODELS

2020 ◽  
Vol 20 (2) ◽  
pp. 77 ◽  
Author(s):  
EDI WARDIANA ◽  
DIBYO PRANOWO
Keyword(s):  
Path Analysis ◽  
Positive Selection ◽  
Structural Equation ◽  
Selection Criteria ◽  
Structural Equation Models ◽  
Arabica Coffee ◽  
Coffee Plants ◽  
Generative Phase ◽  
Observation Method ◽  
Selection Of

<p>ABSTRACT<br />Interrelations among vegetative, generative and yield characters in<br />coffee plantation is important in breeding and selection programs.<br />Interrelationships among these characters are the causal model and it can<br />be analyzed by Sequential Path Analysis (SPA). This research was carried<br />out at Pakuwon Experimental Station located at 450 m above sea level, in<br />Latosol soil type with B type of climate, from December 2010 to April<br />2012. The objectives of this research is to analyze the direct or indirect<br />influence of several vegetative and generative characters on yield<br />characters of Arabica coffee through the application of SPA and Structural<br />Equation Models (SEM). The observation method with systematic<br />sampling on 40 Arabica coffee plants of Kartika 1 and Kartika 2 varieties<br />were used in this study. The results showed that the number of cherries of<br />Arabica coffee var. Kartika 1 and 2 population in Pakuwon Experimental<br />Station were affected directly by generative and indirectly by vegetative<br />characters. Plant height and stem girth can be used as positive selection<br />criteria for high yielding at vegetatite phase, while the character of width<br />canophy can be used as negative selection criteria. In generative phase, the<br />character of quantity of productive branches and the amount of berries and<br />flower cluster can be used as positive selection criteria.<br />Keywords: Coffea arabica, selection, vegetative, generative, yield,<br />sequential path analysis, structural equation models</p><p>ABSTRAK<br />Keterkaitan antara karakter vegetatif, generatif dan hasil pada<br />tanaman kopi merupakan hal penting dalam program pemuliaan dan<br />seleksi. Model saling keterkaitan antar karakter tersebut adalah model<br />sebab-akibat dan dapat dianalisis melalui Analisis Lintasan Bertahap<br />(ALB). Penelitian ini dilakukan di Kebun Percobaan Pakuwon, pada<br />ketinggian tempat 450 m dpl, jenis tanah Latosol, dan tipe iklim B, mulai<br />bulan Desember 2010 sampai April 2012. Tujuan penelitian adalah untuk<br />menganalisis beberapa karakter vegetatif dan generatif yang berpengaruh<br />terhadap karakter hasil tanaman kopi Arabika melalui penggunaan ALB<br />dan Model Persamaan Struktural (MPS). Metode yang digunakan adalah<br />metode observasi dengan teknik penentuan pohon contoh secara sistematis<br />sebanyak 40 tanaman kopi Arabika varietas Kartika 1 dan Kartika 2. Hasil<br />penelitian menunjukkan bahwa jumlah buah pada populasi kopi Arabika<br />varietas Kartika 1 dan 2 di KP Pakuwon dipengaruhi secara langsung oleh<br />karakter generatif dan secara tidak langsung oleh karakter vegetatif. Pada<br />fase vegetatif, karakter tinggi tanaman dan diameter batang dapat<br />digunakan sebagai kriteria seleksi positif untuk produksi tinggi,<br />sedangkan karakter lebar tajuk dapat digunakan sebagai kriteria seleksi<br />negatif. Pada fase generatif, karakter jumlah cabang produktif serta jumlah<br />klaster buah dan bunga dapat digunakan sebagai kriteria seleksi positif.<br />Kata kunci: Kopi arabika, seleksi, vegetatif, generatif, hasil, analisis<br />lintasan bertahap, model persamaan struktural</p>

An Introduction to Path Analysis Modeling Using LISREL

2011 ◽  
pp. 57-81
Author(s):  
Sean B. Eom
Keyword(s):  
Path Analysis ◽  
Statistical Models ◽  
Structural Equation ◽  
Structural Equation Models ◽  
Statistical Tools ◽  
Multivariate Statistical ◽  
Wide Range ◽  
Confirmatory Factor ◽  
E Learning ◽  
Research Stream

Over the past decades, there has been a wide range of empirical research in the e-learning literature. The use of multivariate statistical tools has been a staple of the research stream throughout the decade. Path analysis modeling is part of four related multivariate statistical models, including regression, path analysis, confirmatory factor analysis, and structural equation models. This chapter focuses on path analysis modeling for beginners using LISREL 8.70. Several topics covered in this chapter include foundational concepts, assumptions, and steps of path analysis modeling. The major steps in path analysis modeling explained in this chapter consist of specification, identification, estimation, testing, and modification of models.

Effect of Service Quality on Customer Loyalty through Satisfaction, Perceived Value, and Customer Engagements (Study on Indonesian Ride-Hailing Online)

2020 ◽  
Vol 7 (10) ◽  
pp. 300-310
Author(s):  
Widarto Rachbini ◽  
Diana Anggraeni ◽  
Diah Febrina
Keyword(s):  
Customer Satisfaction ◽  
Service Quality ◽  
Customer Loyalty ◽  
Structural Equation ◽  
Online Survey ◽  
Structural Equation Models ◽  
Perceived Value ◽  
Primary Data ◽  
Customer Involvement ◽  
Analysis Technique

This study attempted to analyze the effect of service quality on customer’s satisfaction, perceived value, and customer involvement as well as its implications for customer loyalty in Indonesia. The primary data used is the result of questionnaires through an online survey platform with the help of Google Form in July to August 2020. The sampling method was purposive sampling using specific criteria set by the researchers with 300 samples that met the criteria. Data analysis technique used the structural equation models (SEM) with the help of LISREL software. The results showed that there was a significant influence on the quality of Indonesian ride-hailing online services on perceived value, and a significant effect on perceived value on satisfaction as well as a significant effect on customer satisfaction on customer involvement. The only construct which directly influences customer loyalty is customer involvement. This research certainly provides practical advice for the online ride-hailing industry in Indonesia where there are three main suggestions aimed at improving the service quality, satisfaction, customer involvement, and value. Further research is suggested to analyze online ride-hailing in neighboring countries such as Malaysia, Singapore, Vietnam, or other Southeast Asian countries. Keywords: service quality, perceived value, customer satisfaction, customer involvement, customer loyalty and online ride-hailing

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