Nanomechanical characterization of asphalt

In this study, asphalt binder and asphalt concrete (AC) materials are characterized using laboratory nanoindentation testing and mechanical models. Traditionally, laboratory nanoindentation test data is analyzed using the Oliver-Pharr method to determine elastic modulus and hardness of materials. In a nanoindentation test, a test sample surface is indented or loaded by a hard indenter tip and then unloaded. In the past, several studies of the polymer materials area have selected a loading rate and dwell time (i.e., the peak load is kept constant for a few seconds before unloading) to avoid or minimize the viscous effect of a material. No studies have attempted to examine the effects of dwell time and loading rate on viscous materials such as asphalt binder, which is the main topic of discussion in this study. This study focuses on determination of mechanical properties such as the elastic modulus and the hardness of viscoelastic materials, like asphalt, from nanoindentation load-displacement data. An existing spring-dashpot-rigid (SDR) element model developed by Oyen and Cook is employed as well as the well-established Oliver Pharr method. The SDR model uses the loading, holding and unloading time-displacement data to predict the modulus, hardness and viscosity of the material. The model has shown excellent agreement with the laboratory indentation data of asphalt binder. Further, the SDR model is calibrated for nanoindentation test data of polymer modified asphalt binder. In addition, mechanical models such as the Voigt model and the Burger model are fitted to creep displacement and time data from nanoindentation tests to predict viscosity, retardation time and creep compliance for asphalt binder. All the models are found to fit very well with an average R2-value of 0.99 for the Voigt model and R2-value of 0.99 for the Burger model. Lastly, the nanoindentation test is performed on an AC (solid) sample to understand the aging in AC. Nanoindentation is done on two different parts of the AC sample: one on the mastic part (mix of asphalt binder and fines) and the other on the pure aggregate part. One hundred indentations were made in a single test on the mastic part to capture the heterogeneity. Approximately sixty indentations were made during a single indentation test on the aggregate part of AC. A small dwell time was applied to reduce the viscous effect of the mastic

HR strategy planning of Viola Vitalis

This internship report is submitted in a partial fulfillment of the requirements for the degree of Master of Business Administration,2014.Cataloged from PDF version of Internship report.Includes bibliographical references (page 39).The objective of the internship is to fulfill the requirement of the MBA program as prescribed. An intern preparesinternship report at the end of the internship period but the main objective of the internship is to get the hands-on experience of the real world organization. The internship is completed with the objective of getting practical knowledge in the HR area of Viola Vitalis. There are many pharmaceutical and nutraceutical company in Bangladesh. Viola Vitalis is a leading pharmaceutical and nutraceutical company operating in Sweden, Bangladesh and USA since 2005 with the aim of providing innovative and high quality nutraceutical. Office of the organization is situated in Mohakhali DOHS at Dhaka. Derma Care, Dento Care, Arsenicure are some of its product whichmanufactured and sellin the Bangladesh market. Viola Vitalis is the pioneer manufacturer of nutraceutical for the prevention and cure of arsenicosis. Arsenicure and Ars-Detox are few unique product aimed at curing arsenicosis rather than simply eliminating its symptoms. A team of biochemists, microbiologists, engineers and professionals ensure high standard that the company aspire to maintain. Recent technology, research and highly qualified professional are the main instrument for this organizations success. The mission and visionof the organization is to provide product of health care invented by advanced technology at affordable price.It describes itself as anorganization with multidimensional scope where electronic communication plays a vital role. In this report, I have gone through the overall HR policies and practices of Viola Vitalis. Recruitment, selection, staffing, performance appraisal, training facility and general HR activities are part of the responsibility of HR in this organization. I collected information on basic job functions of other departments for better understanding of the relation between them and the HR department.This report gives a glimpse of knowledge about the history and work culture of Viola Vitalis from a broader perspective. I conducted survey among the employee and find out the most needed change want by the employee and explain the accomplishment of development and my recommendation. In common, I have tried my level best to work with the most important human resource activities which I have illustrated through the report.Faisal Hasan KhanM. Business Administratio

EFEKTIVITAS PEMBELAJARAN DARING PENDIDIKAN JASMANI KESEHATAN DAN REKREASI DENGAN PEMANFAATAN APLIKASI PENJASPEDIA PADA MASA PANDEMI COVID-19 DI SEKOLAH DASAR SE-KECAMATAN JONGGOL

COVID-19 is a new type of virus that was discovered in Indonesia in March 2020. The confirmed patient data as of March 1, 2021, were 1,341,314 people from all over Indonesia. The Covid-19 outbreak has brought changes in the movement of the economic structure and mobility of the people evenly. One of them is that the learning system which was initially implemented offline and later became online has a significant negative impact on productivity that can be felt by parents and students themselves. One of the lessons that must be online is sports, where sports activities require movement in their implementation. This research uses a survey method and uses primary data, namely data sources that are directly obtained and collected in the field. This research is a qualitative research with library methods and uses a data collection technique in the form of a questionnaire. Based on the results of research on the readiness of PJOK teachers in carrying out online learning, it shows that most of them stated their readiness to carry out online learning, related to the online learning system that there was a significant increase in the online learning system, and related to online learning media showed that there was a significant increase in the use of media online learning

Upflow sand-roughing filtration

Slow sand filtration requires low turbidity water for effective operation. In most cases this means pretreating the raw water to reduce its turbidity. Lately horizontal gravel filters have become very popular as a means of pretreatment. They are simple to operate, have a large mass storage capacity, and can cope with high turbidity shock loads. However, cleaning them can be a problem. An alternative pretreatment, which this study is concerned with, is upflow sand roughing filtration. It has the potential advantages of simple design, ease of operation and cleaning, and low area requirements. A study of upflow versus downflow was done using two small filter columns. The results showed that although downflow exhibited a better turbidity removal than upflow, upflow allowed longer filter runs and better utilisation of bed depth. This was in agreement with earlier findings. The effect of backwash water quality was also investigated. Both filters were run in upflow direction; one was washed with tap water, the other with polluted raw water. The results suggested, unexpectedly, that a filter washed repeatedly with polluted water produced slightly better turbidity removal than one washed with tap water. This indicated some form of maturation, which could be biological in nature, taking place. Experiments with horizontal gravel filters clearly showed the importance of biological mechanisms in maturation. Four new filter columns, 50mm in diameter, were constructed. These allowed further investigation of the effect of bed depth. Backwash rate and duration were investigated to find an optimum. Very little of the wash water was required to clean the filters, the majority being required to flush the turbidity out of the system. The long-term effect of backwash on filters was investigated, as was the effect of wash water quality. Tap water, raw water and raw water polluted with settled sewage were used to wash the filters. The results indicated that the filters washed with raw water and polluted water proved to be as good as regards turbidity removal as those washed with tap water. This suggested that raw water backwash could be used effectively for washing upflow roughing filters

Pengaruh Intellectual Capital Terhadap Profitabilitas Dan Dampaknya Terhadap Harga Saham Perusahaan Sektor Keuangan Yang Terdaftar Di Bursa Efek Indonesia (Bei)

This study aimed to study the effect of intellectual capital on profitability and its impact on stock prices. Profitability is proxied by ROE and EPS. Stock price is measured based on the average price of monthly stock at the time of the daily closing. The population in this study is the financial sector companies listed on the Indonesian Stock Exchange (BEI) in the period 2011-2014. The study looked at 47 issuers, using purposive sampling method by way of judgment sampling. Testing the hypothesis in this study using regression analysis and path analysis to see the path coefficients of each variable. The results showed that; (1) intellectual capital affect the profitability, (2) intellectual capital affect stock prices, (3) profitability affect stock prices, (4) intellectual capital, profitability affect stock prices.. Keywords: Intellectual Capital, Profitabilitas, ROE, EPS, Stock Pric

Propagation of New Innovations: An Approach to Classify Human Behavior and Movement from Available Social Network Data

It is interesting to observe new innovations, products, or ideas propagating into the society. One important factor of this propagation is the role of individual's social network; while another factor is individual's activities. In this paper, an approach will be made to analyze the propagation of different ideas in a popular social network. Individuals' responses to different activities in the network will be analyzed. The properties of network will also be investigated for successful propagation of innovations

Enterprise Risk Management dan Risiko Operasional: Peran Tata Kelola TI

Penelitian ini bertujuan untuk memberikan bukti peran tata kelola TI dalam mengoptimalkan fungsi ERM untuk mengurangi risiko operasional perusahaan. Penelitian ini berkontribusi pada kegunaan tata kelola TI dalam ERM untuk mengurangi risiko operasional perusahaan. Dengan menyediakan analisis komprehensif mengenai peran tata kelola TI dalam ERM untuk mengurangi risiko operasional perusahaan, diharapkan dapat membantu perusahaan dalam memutuskan alokasi modal untuk tata kelola TI dan program ERM. Data yang dikumpulkan untuk melakukan penelitian merupakan data sekunder yang diperoleh dari berbagai sumber, yaitu dari situs resmi BEI( www.idx.co.id), situs resmi perusahaan yang bersangkutan, serta database Revinitif Eikon. Penelitian ini dibangun diatas dua teori utama yaitu agency theory dan theory acceptance model (TAM). Bukti empiris yang diperoleh menunjukkan pentingnya ERM sebagai alat dari manajemen risiko operasional. Tetapi, peneliti tidak menemukan adanya hubungan tata kelola TI terhadap risiko operasional

Digital Human Resource Management: Prospects & Challenges for Garments Industries in Bangladesh

Digital human resource management (HRM) popularly known as Electronic HRM has got immense popularity around the world including least developing countries like Bangladesh due to rapid automation, tech-based business era, presence and involvement larger community online, real-time response, gaining efficiency, and distance handling of HR in the workplace. Application of digital HR practices has faster the process, reduces cost, saves times, recruiting through social media, establish a brand and enhance the name and fame of the organization to the global community providing a platform of Human Resource Information System (HRIS). The study mainly reveals the current status, prospects, and challenges of using digital HRM in the garments industry in Bangladesh. To serve this purpose a focused group discussion has been conducted of most renowned eight garment factories along with digital HRM practices therein. Being the second position of readymade garments products exporting countries Bangladesh is certainly on the right track to capitalize on it with lots of prospects and challenges. Meanwhile, number one ranked China is moving on advancing on the automation.to keep track of this competition Bangladesh should not lag. Hence, the proper application of digital HR practices can be blessed to convert the mass into human resources. Keywords: Digital HRM, garments industry, HRIS, social media, prospects, and challenges. DOI: 10.7176/EJBM/12-7-03 Publication date:March 31st 202

EVALUATION OF SITE VARIABILITY AND ITS APPLICATION IN DESIGN

Geotechnical characterization has an important role in engineering geology as well as in implementation of any project. There are several variables and uncertainties involved in characterizing a project site. Four different sources of uncertainties represent the characterization of geotechnical variability, which include spatial variability, measurement error, statistical error and model bias. Spatial variability is expressed in terms of the mean, variance, and scale of fluctuation. Several statistical techniques such as the Gauge R & R, which includes X-Bar/R and ANOVA, and the Second Moment can be applied to compute site variability in terms of the coefficient of variations. Measurement error is evaluated using data extracted from several laboratory tests. Statistical error and model bias arise when a correlation model is selected to interpret specific data. To measure site variability in this research, tests were conducted using different devices in the box and at the field. Analyses were conducted using the Gauge R & R and Second Moment (SM), and variability is expressed in terms of standard deviations and coefficient of variations (COVs). While comparing variability from the box and the field tests, it is apparent that the COVs from the second moment are smaller than the COVs from the ANOVA method. Similarly, operator related variations show comparatively low values of the COVs than those generated from location/specimen related variability. Besides, analyses of variability from the box test indicate lower bound of coefficient of variations than the field tests. The under-constructed sections tested at LA highway exhibited higher values of COVs compared with the constructed sections at the Accelerated Loading Facility (ALF). In the case of laboratory tests, specimen related variability renders higher COVs than the operator related variability. The inclusion of variabilities into the practical applications, such as bearing capacity of shallow foundation and settlement analysis, showed reduction in the probability of failure and reduction in the magnitude of settlement, respectively