On the problem of control over the primary grinding mill ball charging

2021 ◽  
pp. 17-22
Author(s):  
I. V. Sokolov ◽  
A. V. Kuzyakov
Keyword(s):  
Consumption Rate ◽  
Service Providers ◽  
International Service ◽  
Analysis Techniques ◽  
Operational Costs ◽  
Charge Spectrum ◽  
Approval Procedure ◽  
Charge Analysis ◽  
Mill Process ◽  
Grinding Mill

Considering the fact that the costs related to grinding balls and electric power account for a significant share of operational costs incurred by concentrator plants, this paper highlights the relevance of using an optimized ball charge. The paper considers a conventional approach to ball charging, which involves doing calculations on the basis of a given throughput. The latter serves as a parameter for the specific ball consumption rate approval procedure. At the same time, no consideration is given for the ball wear rate as a parameter defining the grinding performance. It is noted that the ball charge dynamics can be analyzed based on the noise produced by the mill, or the vibroacoustic parameters of the mill. The paper examines some vibro-acoustic ball charge analysis techniques utilized by both domestic and international service providers. It is noted that in all these cases the technique uses just one physical parameter, which is not enough to monitor the total mill load. The VAZM-1M analyzer developed by Soyuztsvetmetavtomatika JSC analyzes and calculates an integral amplitude of the mill vibro-acoustic field. This ensures that all components of the grinding process are taken into account. The paper takes a detailed view of the findings obtained upon analysis of the primary grinding mill ball charge. The work was carried out at the Erdenet concentrator plant as part of contractual scope. A number of different ball charge options was considered, and is it noted that none of the options can resolve this problem completely. The authors describe a possibility to monitor the mill process load with the help of the VAZM-1M analyzer. The authors also analyzed the experiments that aimed at identifying the grinding parameters governed by the mill ball charge. It is shown that the VAZM-1M analyzer gives adequate readings of any ball charge deviations. The mill spectrum registered by the VAZM-1M analyzer contains a resonance peak, which is believed to correlate as a small mill ball charge spectrum. In this regard, a plan of further research was drafted that relies on the use of the VAZM-1M analyzer. The aim is to identify an exact frequency band that would adequately correlate with the mill ball charge.

Pengaruh Rasio Keuangan terhadap Profitabilitas pada Perusahaan

2021 ◽  
Vol 1 (1) ◽  
pp. 21-29
Author(s):  
Amalia Amanda Hidayah ◽  
Eti Kurniati ◽  
Farid H. Badruzzaman
Keyword(s):  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Capital Adequacy ◽  
Analysis Techniques ◽  
Operational Costs ◽  
Net Interest Margin ◽  
Capital Adequacy Ratio ◽  
Negative Effect ◽  
Positive Effect ◽  
Interest Margin

Abstract. This study used a sample of 6 companies. The research objective was to determine the effect of Non Performing Loans (NPL), Operational Costs on Operational Income (OCOI), Net Interest Margin (NIM), Loan to Deposits Ratio ( LDR) and Capital Adequacy Ratio (CAR) to profitability (ROA). Problem solving using multiple linear regression analysis techniques. Based on the analysis, it is known that NPL and LDR have a significant negative effect on profitability (ROA), while CAR have a significant positive effect on profitability (ROA). Abstrak. Penelitian ini menggunakan sampel sebanyak 6 perusahaan. Tujuan penelitian untuk mengetahui pengaruh Non Performing Loan (NPL), Biaya Operasional terhadap Pendapatan Operasional (BOPO), Net Interest Margin (NIM), Loan to Deposits Ratio (LDR) dan Capital Adequacy Ratio (CAR) terhadap profitabilitas (ROA). Pemecahan masalah menggunakan teknik analisis regresi linier berganda. Berdasarkan hasil analisis maka diketahui bahwa NPL dan LDR berpengaruh negatif signifikan terhadap profitabilitas (ROA), sedangkan CAR berpengaruh positif signifikan terhadap profitabilitas (ROA).

Minimization of Energy Using Heuristic Resource Allocation and Migration for Cloud Computing

2021 ◽  
Vol 12 (1) ◽  
pp. 74-83
Author(s):  
Manjunatha S. ◽  
Suresh L.
Keyword(s):  
Cloud Computing ◽  
Data Center ◽  
Large Scale ◽  
Data Centers ◽  
Service Providers ◽  
Cost Effective ◽  
Cooling Systems ◽  
Operational Costs ◽  
Cloud Computing Service ◽  
And Migration

Data center is a cost-effective infrastructure for storing large volumes of data and hosting large-scale service applications. Cloud computing service providers are rapidly deploying data centers across the world with a huge number of servers and switches. These data centers consume significant amounts of energy, contributing to high operational costs. Thus, optimizing the energy consumption of servers and networks in data centers can reduce operational costs. In a data center, power consumption is mainly due to servers, networking devices, and cooling systems, and an effective energy-saving strategy is to consolidate the computation and communication into a smaller number of servers and network devices and then power off as many unneeded servers and network devices as possible.

scholarly journals PENGARUH BIAYA OPERASIONAL PENDIDIKAN TERHADAP OUTPUT PENDIDIKAN GURU SMK SE-KABUPATEN GRESIK DENGAN PRODUKTIVITAS KERJA SEBAGAI VARIABEL MODERASI

2017 ◽  
Vol 5 (1) ◽  
pp. 21
Author(s):  
Rohmawati Rohmawati
Keyword(s):  
Statistical Analysis ◽  
Work Productivity ◽  
Sampling Technique ◽  
Operational Cost ◽  
Vocational High School ◽  
Moderator Variable ◽  
Analysis Techniques ◽  
Operational Costs ◽  
Vocational High Schools ◽  
Descriptive Statistical Analysis

This study aims to (1) analyze the influence of education operational costs on educational output at Vocational High School/ SMK in Gresik regency, (2) analyze the effect of education operational costs on educational output with teacher’s work productivity as a moderating variable at SMK in Gresik regency. This research is an explanatory research with a quantitative approach. The population in this research are vocational high schools (SMK) at Gresik regency. The sampling technique used was purposive sampling. The data collection techniques which used are documentation and interview techniques. While the method of analysis that used is descriptive statistical analysis techniques, statistical analysis techniques infrensial regression with SPSS. The results showed that the education  operational cost does not affect the output of education at SMK in Gresik and education operational cost does not affect the educational output with teacher’s work productivity as moderating variable. Teacher’s work productivity less can be used as a moderator variable or can not be used as independent variables that have an influence on educational output variables

Overcoming the Barriers to Uptake

2013 ◽  
Vol 3 (3) ◽  
pp. 1-9 ◽  
Author(s):  
Damian Brown
Keyword(s):  
United States ◽  
Service Providers ◽  
Health Benefits ◽  
The United States ◽  
Mobile App ◽  
Serious Gaming ◽  
Game Analysis ◽  
Analysis Techniques ◽  
Primary Driver

Serious gaming for health benefits is moving out of the realm of being potentially interesting, and the authors are starting to see a growing maturity in the field. This study of six serious gaming projects based either wholly or partly in Denmark investigates the changes taking place in the healthcare area based on experiences with serious gaming projects, the likely development of the field, and the lessons which have been learned in the area of designing to overcome barriers which exist at various levels and throughout the delivery chain. This is done from the perspective of developers and service providers, primarily using interview and game analysis techniques. The results indicate a growing maturity amongst service providers in a number of key areas, such as understanding of the most appropriate uses of games, designing for usability, and a better understanding of the process of making a successful game for health. There is a clear expectation that games will continue to diversify and penetrate the health space, while at the same time many are looking to developments in the United States as a primary driver for uptake in Europe. There are high hopes for the mobile/app area, and a number of interesting cross-disciplinary initiatives are identified.

Developing a Web 2.0 Business Portal to Benefit SMEs, Industry, Local Government, and Consumers

2015 ◽  
Vol 7 (2) ◽  
pp. 52-72
Author(s):  
Darren Bednarski ◽  
Arthur Tatnall
Keyword(s):  
Web 2.0 ◽  
Service Providers ◽  
Small And Medium Enterprises ◽  
Actor Network Theory ◽  
Social Commerce ◽  
International Service ◽  
Internet Users ◽  
Model Combining ◽  
Medium Businesses ◽  
Medium Enterprises

This article presents a research study into the development of a Web 2.0 B2B and B2C horizontal portal from the perspective of Actor-Network Theory, and the benefits for its participants particularly Small and Medium Enterprises. Whilst International service providers such as eBay, Linkedin and Google have revolutionised transactions for both businesses and consumers, this paper focuses on Australian Internet users and the online experience of Consumers and Small and Medium Enterprises, and includes an overview of user levels of computerisation, technology in Australian households and businesses, and e-commerce of Small and Medium Businesses. The research presented here highlights a major factor in proposing the referenced business model combining Web 2.0 tools with traditional online search with the critical factors underpinning its need and success – a subsequent working example is presented. To support this, the article briefly examines user expectations and experiences when engaging in e-commerce and the rise of Web 2.0 and social commerce, in creating a virtual workforce where SMEs are able to compete more effectively against their larger counterparts.

scholarly journals Halal Friendly Attribute of Muslim Travellers Toward A Non-Muslim Destination

2021 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Ghea Putri Aliffia ◽  
Rita Komaladewi
Keyword(s):  
Factor Analysis ◽  
Service Providers ◽  
Large Population ◽  
Sampling Technique ◽  
Total Sample ◽  
Time Data ◽  
Analysis Techniques ◽  
Tourist Destinations ◽  
Tourism Service ◽  
New Phenomena

Halal tourism is a new phenomena of the growth of the halal industry. The demand for halal products and services has also increased, both in tourist destinations obtained by having Muslim and non-Muslim populations. Muslim tourists have unique needs when traveling, especially if there is a tourist destination with a large population of non-Muslims. This study aims to determine the preferences of Muslim travelers through the analysis of halal friendly attributes on non-Muslim travel destinations. The sampling technique uses unknown population with a total sample of 100 respondents and the sampling technique uses purposive sampling (domestic travelers and a Muslim who have visited Bali tourism destination at least one time) Data analysis techniques in this study used qualitative, analysis techniques with factor analysis. Factor analysis is used to identify an important set of variables from a set of variables that are more numerous to be used in subsequent multivariate analysis. The results of this study indicate that Muslim travelers preferences based on halal friendly attributes in non-Muslim travel destinations of the most dominant attributes considered important are good of quality halal food and drinks as well as the availability of information about halal in the travel area. These attributes can be the main focus of attention for tourism service providers in order to improve the quality of Muslim-friendly tourism in Bali.Keywords: preferences, halal tourism, muslim travelers, non-muslim travel destinations

An Overview of Feeder Services in the Era of Mega Containerships

2017 ◽  
pp. 317-339
Author(s):  
Olcay Polat
Keyword(s):  
Air Pollution ◽  
Service Providers ◽  
Logistics Service ◽  
Logistics Networks ◽  
Network Cost ◽  
Operational Costs ◽  
Transportation Service ◽  
Logistics Service Provider ◽  
Low Volume

In the era of mega containerships, global containership liners design their transportation service as Hub-and-Spoke networks to improve the access to local transportation markets and to reduce operational costs by using short-sea connections for low-volume transportation lines. Feeder services play an irreplaceable role as logistics service provider in global shipping because of considerable benefits resulting from an increased port range, elimination of port restrictions, small sized ships with increased service frequency, the use of mega containerships, savings in network cost, and decreased inland traffic and air-pollution. In addition to main advantages of feeder service, efficient distribution of containers to faraway regions through feeder services out of the main line regions could subsist in a worldwide market. The aim of this chapter is to analyze the role of feeder services in liner shipping and provide information about major challenges that feeder service providers face in planning their logistics networks in the era of mega containerships.

Modes of customer co-production for international service offerings

2015 ◽  
Vol 26 (4) ◽  
pp. 625-647 ◽  
Author(s):  
Scott E. Sampson ◽  
R. Bruce Money
Keyword(s):  
Service Management ◽  
Service Providers ◽  
Natural Extension ◽  
Dyadic Relationships ◽  
Cultural Issues ◽  
Managerial Implication ◽  
Content Type ◽  
International Service ◽  
Managerial Implications ◽  
Culture Effects

Purpose – Much has been written about the manifestations and managerial implications of customer co-production in service offerings. However, there have been relatively few references to issues of co-production in international service environments. Co-production is very relevant in international environments because of the requirements for interaction between producers and consumers, which interaction spans international borders and national cultures. The purpose of this paper is to apply an established theory of co-production, the Unified Service Theory (UST), to the international service context. This provides the authors with structured models for conceptualizing the co-productive nature of international service offerings and assessing-related managerial implications. Design/methodology/approach – The UST provides a model of co-productive service delivery. Extending that model, the authors develop a taxonomy of international service based on the “four modes of service supply” provided in the General Agreement on Trade and Services instituted by the World Trade Organization (WTO). Then, using data from the WTO and World Bank, the authors propose and test six hypotheses for predicting service exporting focus corresponding to the co-production taxonomy. Findings – Based on the analysis of empirical data, the authors find more service exporting focus in small, growing, high-wage economies that have a significant service base and focus in merchandise exporting. The strength of these effects differs for different modes of service supply. Research limitations/implications – The authors also discuss cultural issues of international service, but the empirical analysis of culture effects is thus far inconclusive. Also, the analysis is limited to modeling and studying dyadic relationships, i.e., service providers in one country involved in an interchange with customers in another country. A natural extension would be to consider triads and more complex networks of co-productive service offerings. Practical implications – This research shows how managerial implication of the UST can be extended to international service contexts. The authors review managerial implications pertaining to meeting variable demand, describing service characteristics, and pricing. Originality/value – Co-production research is well-established in service management literature. This paper extends that research to international contexts by describing the WTO taxonomy in terms of the UST. This allows the authors to apply various insights of co-production to international service offerings.

Sign in / Sign up

Export Citation Format

Share Document