system performance thesis

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High Performance File System Design (Thesis)

File systems and I/O subsystems should be $smart$; they can analyze how they are being used and tune themselves dynamically to improve their performance. File systems should select caching and disk placement strategies on a per-file basis, and they should use system-wide disk reorganization strategies. For example, systems should be able to reorganize the data on disk automatically during idle periods so that system performance is improved during future periods of peak load. This dissertation presents the design and analysis of iPcress, a prototype of a next-generation file system. iPcress is a smart, high-performance, reliable file system. It uses statistical information collected on a per-file basis to tune itself. iPcress has a framework in which various optimizations can be performed by the file system automatically. It is extensible; other optimization techniques can be incorporated easily, so that the system may evolve. In addition, iPcress can incorporate a variety of file access and placement techniques and choose the best combination of techniques for each file dynamically. A sample smart optimization -- clustering active disk data in the center of the disk -- is described; it increases disk throughput by 30%.

• Corpus ID: 18003459

The Impact of Performance Management System on Employee performance Analysis with WERS 2004

• Published 2012

Figures and Tables from this paper

51 Citations

The impact of performance management system on employee performance: the moderating role of balance scorecard usage, the impact of performance management on employee performance, performance management and employee productivity - a study on the banking sector of pakistan, impact of talent management on organizational performance: the moderating role of an effective performance management system, the effect of performance management practice on employee performance of public institutions in jimma town, ethiopia, a study of the effect of perceived training and development on employee performance at selected hotels in sarawak, constructing of evaluation index modelling for performance appraisal on employee retention evidence from pharmaceutical companies in indian context, developing a model for alignment between individual and organizational performance management and organizational objectives, impact of performance management system on employee job satisfaction in automobile companies in western province, sri lanka.

• Highly Influenced

Impact of Performance Management System on Job Satisfaction of Faculty Members: A Study on Technical Education Institutes of Nagpur

75 references, performance management: a strategy for improving employee performance and productivity, employee performance evaluation by the ahp: a case study, reward practices and performance management system effectiveness, managing performance : performance management in action.

• Highly Influential

Outcomes–Based Performance Management in the Public Sector: Implications for Government Accountability and Effectiveness

Impact of employee participation on job satisfaction, employee commitment and employee productivity, when the uncountable counts: an alternative to monitoring employee performance, why we hate performance management-—and why we should love it, performance management: a framework for management control systems research, employee performance appraisal system participation: a technique that works, related papers.

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IBM Careers

• Français Canadien

Thesis: Automated pre-silicon system performance analysis framework

• Böblingen, DE

Apply now Introduction The hardware team in Boeblingen develops the most powerful server systems in the world – in an international work environment with our partner labs in the USA, Israel and India. We are using modern verification methods and are continuously optimizing our development processes. Your Role and Responsibilities To ensure performance targets are met before the design data of the next generation of IBM z microprocessors is sent to the fab, a growing set of performance tests are performed pre-silicon in system-level simulations. However, as of now, the results of these tests are manually analyzed by the team of performance verification engineers.

The goal of this master thesis is to develop an automation solution for the analysis of the pre-silicon system-level performance regression results. It must assist the team of performance verification engineers in finding performance issues of next-generation IBM microprocessors the most efficient way. Similar work has been started in another verification area, and this master thesis will analyze these first ideas and concepts, continue, and expand them – if they fit.

• The first step would be to thoroughly analyze the existing data set and performance metrics and to apply the previously mentioned ideas.
• The solution then needs to be optimized to the pre-silicon performance regression use-case, e.g. by applying further data science methods and/or developing new scores.
• Eventually, AI and/or machine learning techniques can be applied to make the solution adaptive to changes throughout the project, or over the course of several project, respectively.

Required Technical and Professional Expertise

• Study of computer science, electrical engineering, or a similar direction
• Good knowledge of programming, knowledge of a scripting language like Python
• Knowledge of data science, statistics, and machine learning
• Knowledge of development tools / technologies (e.g. git)
• AI knowledge
• English or German language

Preferred Technical and Professional Expertise

• First experience in developing hardware, and performance analysis.

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THE SUSTAINABILITY INSIGHT SYSTEM

THESIS,  created and developed by TSC, is a performance assessment system that  guides  retailers and suppliers to benchmark, quantify, and take action on critical sustainability issues within their consumer product supply chains.  

Science-Based Insights

Eliminates Survey Fatigue

Established Assessments

Data-Backed Decision Making

THESIS For Retailers and Suppliers  

For Retailers:

C urrent retailers:

Ahold delhaize usa, costco, dollar tree, family dollar, sam’s club, staples, tractor supply company, walgreens, walgreens boots alliance (wba), walmart, woolworths..

For Suppliers :

In 2023, tsc introduced a common reporting period for all suppliers on thesis to current retail customers. this common reporting period is designed to support supplier engagement with thesis and minimize survey fatigue  .

Learn more about THESIS

Where did thesis come from  .

THESIS was originally created by TSC starting in 2009 and launched as The Sustainability Index in 2014. In 2019, TSC partnered with SupplyShift to create our current iteration of THESIS, powered by Sphera Supply Chain Sustainability’s cutting edge platform and informed by TSC’s deep roots in higher education, including Arizona State University and Wageningen University + Research. THESIS currently has more retail users than ever before.  

Every spring, TSC staff work with TSC members to revise and update THESIS for the upcoming fall campaign.   

Who is Sphera Supply Chain Sustainability ?  

THESIS is powered by Sphera Supply Chain Sustainability, formerly known as SupplyShift , TSC’s partner who is committed to helping businesses create more transparent, responsible, and resilient supply chains. Learn more about Sphera Supply Chain Sustainability and visit THESIS on their platform . 

What is the Science Behind THESIS?

THESIS is rooted in TSC’s university-based, scientific methodology. THESIS is based in LCA methodology and was developed in a pre-competitive way using TSC’s stakeholder engagement expertise that brings the CPG industry, NGOs, and higher education together for greater impact. It is this combination of stakeholders that sets THESIS apart from other consultant-led performance assessment platforms.  

TSC methodology is based on creating and evolving strict, LCA-based key performance indicators using relevant sources and evidence for hotspots.  

THESIS 2023 at a Glance

TSC Impact Report

Summary of 2021 THESIS Scores — From 2016 to 2021, the THESIS assessments of product manufacturers have improved (relatively):

From 32.5% to 48.4% (where 100% equals the maximum score)..

This is an indication that the systems and processes put in place to respond to THESIS KPIs are creating positive changes in the manufacturer’s practices and its supply chain, leading to an overall improvement in scores. Scores improved from 2020 to 2021 at about the same pace they have annually over all six years.

THESIS Industry Insight Reports  

HOUSEHOLD CHEMICALS

PACKAGING INSIGHTS

TRENDS IN TEXTILES

The Difference: University-Based Research

TSC and THESIS originate from our founding university, Arizona State University , with contributions from our partnership with Wageningen University + Research.   

Get started with THESIS today.

Contact TSC Director of Science and Impact

Erin killeen.

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Urban Water Supply System Performance Assessment: the Case of Alem Gena Town.pdf

Abstract Intermittent water distribution is the key problems of many water authorities in developing countries including Ethiopia. Water demand has been increasing significantly in most cities due to population growth and other factors. As a result, town water utilities are struggling to provide customers with adequate and reliable water supply service in spite of obstacles which hinder water utilities not to provide the required service. This study assess the performance of Alem Gena town water supply sub-system based on main performance indicators namely Demand and supply, water loss, water quality, customers satisfaction and operation and maintenance. These indicators have been cited the main factors which reflect the performance of many urban water supply systems. High water loss, customer complaints and operation and maintenance problems indicates that there are deficiencies on the quality of the service. To conduct this research, data of water production and consumption, water supply system data were obtained from the water utility records, other data not found in the water utility records is collected using instruments. Hydraulic performance of the system is also evaluated by modeling the system. Water quality tests were conducted and compared with the national and international standards. Household interviews were made to understand customers’ satisfaction towards the water supply. The result shows that water loss is 37% higher than the generally accepted value of 25%. There is a frequent interruption of boreholes. The water quality test shows some parameters departed from the standard set on the Ethiopian and WHO water quality guidelines. In addition there is customer’s complaint towards continuous access of water. The operation and maintenance in the town is identified to be poor. In conclusion, the town’s water supply system is poor in managing water loss, water quality, operation and maintenance with the worst condition of continuous generation of water from sources continuously without interruption. It is recommended that the water utility develop a strategy and work hard on the indicated system deficiencies especially on operation and maintenance to improve the water supply system performance and provide customers with good quality service.

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Andinet Tekile

Urban water utilities in Ethiopia, including Debre Tabor Town, commonly suffer from an intermittent water supply, water quality issues, poor service delivery, and other problems. Thus, the main focus of this study was to evaluate the actual performance level of the water supply system of the town based on hydraulic efficiency, quality, cost recovery and customer satisfaction. The water distribution system status was measured by using reliability, resilience, and vulnerability as performance indicators. Weightage Arithmetic Water Quality Index (WAWQI) and household-based questionnaires were used to evaluate the water quality and customer satisfaction, respectively. Pressure and velocity-based sustainability index of 0.614 and 0.132 showed acceptable and unacceptable water supply status, respectively, and overall moderate sustainability. Results of the WAWQI revealed that more than half of the sampled tap waters were either poor or unfit for drinking purposes. The comparison of income...

Journal of Civil and Environmental Engineering

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wasihun gudeta

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A Computational Modelling and Simulation of a Cylinder Combustion System of Spark Ignition Engine for Enhancing Engine Performance and Minimizing Environment Pollution

48 Pages Posted: 28 Aug 2024 Publication Status: Under Review

Md. Nasirul Islam

Khulna University - Department of Civil Engineering

Mostafizur Rahman

Mohammad mujtaba hasan.

Military Institute of Science and Technology

An internal combustion engine is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit. Though the primary application of such engines is in the transportation sector and stationary power generation, they also contribute to climate change and global warming. In order to tackle climate issues, governments all over the world have imposed strict regulation on emission. Considering the environmental challenges and highly competitive regional as well as global automobile markets, manufacturers of internal combustion engines rely on both experimental and mathematical models of various complexity for engine development. As the mathematical models used depend on the type of questions whose answer is being sought, they can be as simple as Otto cycle or complex CFD codes. However, for control system development for real-time engine operation Single-zone zero-dimensional differential equation-based models are used. In this research detail derivation of Single-zone energy release model has been performed with necessary assumptions and simplifications. Furthermore, the model has been translated into computer code using MATLAB for numerical experimentation and simulation. The simulations carried out using the computer model indicate that there is an optimum energy release angle at which the engine performs best. Moreover, as an engine gets old, mass loss due to blow-by effect deteriorates engine performance. Nevertheless, the optimum angle for energy release remains somewhat unchanged. The simulation performed using the computer program reveals that the energy release angle has an important role when it comes to engine performance which also indicates proper combustion and leads to control smoke. It is observed that there is an optimum energy release angle for which engine performance reaches pick value. In this work the angle was found to be =    degree.

Keywords: Zero-Dimensional Model, Internal Combustion Engine, Heat Transfer, MATLAB

Suggested Citation: Suggested Citation

Md. Nasirul Islam (Contact Author)

Khulna university - department of civil engineering ( email ), military institute of science and technology ( email ).

Dhaka Bangladesh

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