Analysis of Effectiveness in the Utilization and Control of Electronic Waste (E-Waste) in Indonesia

2021 ◽  
Vol 1 (1) ◽  
pp. 1-11
Author(s):  
Savitri Amalia ◽  
Ibrahim Amyas Aksar Tarigan ◽  
Anita Rizkiyani ◽  
Catur Apriono
Keyword(s):  
Statistical Analysis ◽  
Public Awareness ◽  
Electronic Waste ◽  
Waste Collection ◽  
Recycling Process ◽  
Social Community ◽  
Toxic Material ◽  
High Hazard ◽  
And Control ◽  
Very High

In Indonesia, E-waste continues to grow rapidly, along with the increasing use of electronic goods such as telecommunications devices, households, offices, etc. Although it can be recycled, only a small portion can be done, and the recycling process is still under minimal control. Most E-waste is categorized as hazardous and toxic material waste. E-waste has a very high hazard impact if it is not recycled properly and correctly, such as polluting, damaging, and endangering the environment. This article uses forecasting of e-waste growth and canalization e-waste in Indonesia. The first data was obtained from EWasteRJ, a social community engaged in e-waste collection. The second data is obtained from questionnaires distributed to 110 respondents, focusing on knowledge and ways of handling E-waste. Using statistical analysis on both data shows that the amount of E-waste in Indonesia continues to increase every year, and public awareness of the dangers of E-waste is increasing.

scholarly journals Perancangan Sistem Value Chain terhadap Prospek Pengumpulan E-Waste di Bank Sampah

2016 ◽  
Vol 5 (1) ◽  
pp. 39
Author(s):  
Stephanus Kelvin ◽  
Helena J. Kristina ◽  
Eric Jobiliong
Keyword(s):  
Value Chain ◽  
System Simulation ◽  
Electronic Waste ◽  
Pilot Project ◽  
Waste Recycling ◽  
Environmental Issue ◽  
Waste Collection ◽  
Recycling Process ◽  
A Value ◽  
Waste Bank

<p><em>Electronic waste (e-waste) has become environmental issue in Indonesia. Several tons of e-waste was generated each year. Available landfills will not be sufficient to accommodate e-waste that people produce. Waste bank become one of many solutions to overcome this problem. Implementation of pilot project in waste bank is needed to see the prospects of e-waste collection in waste bank. Thus, the goal of this research is to design a value chain system for e-waste collection prospect in waste bank and system simulation as the foundation for implementing a pilot project. </em><em></em></p><p><em>Simulations on 2 scenarios had been done to determine profitability of e-waste collection’s pilot project in waste bank. Based on simulation, it is known that there is profit generated from e-waste recycling process for 2 scenarios. Ranges of profit for 2 months are Rp. 7.963.879 - Rp. 40.447.047 for scenario 1 and Rp. 7.952.394 – 40.435.561 for scenario 2. If only PCB component that could be recycled, profit for 2 months still can be generated in the range Rp. 689.964 – Rp. 6.398.486 for scenario 1 and Rp. 678.478 – Rp. 6.387.000 for scenario 2. Thus, implementation of e-waste collection’s pilot project in waste bank is profitable.</em></p>

scholarly journals Methods for Determining the Tetrachoric Correlation Coefficient for Binary Variables

2018 ◽  
pp. 1-12
Author(s):  
E. F. El-Hashash ◽  
K. M. El-Absy
Keyword(s):  
Statistical Analysis ◽  
Correlation Coefficient ◽  
Standard Error ◽  
Public Awareness ◽  
Electronic Waste ◽  
Bivariate Normal Distribution ◽  
Tetrachoric Correlation ◽  
Mathematical Methods ◽  
Analysis Computer ◽  
Using Data

The tetrachoric correlation coefficient (rt) is a special case of the statistical covariation between two variables measured on a dichotomous scale, but assuming an underlying bivariate normal distribution. Our goal was to provide an analysis of seven different methods used to calculate rt. The rt approximation was then used to derive its standard error and its associated confidence interval. Computation of rt is not straightforward and is usually not available in standard statistical packages. This paper introduces seven methods for computing the rt value and three methods used to provide the standard error estimation {SE(rt)}. These methods were illustrated using data from questionnaires that were used to evaluate public awareness regarding Electronic Waste hazards. The different algorithmic/mathematical methods used to estimate rt and SE(rt) yielded values that were equal to (or very close to) each other and the estimates obtained from SAS statistical analysis software. Method 6 and Method 1 used to estimate rt and SE(rt) work very well, the equations are easy to understand, are computationally simple and are ideally suited for use. Additionally, the width of the confidence intervals for these methods are equal to (or closely approximates) the widths calculated by the SAS statistical analysis computer program.

Effects of Quarantine Due to the COVID-19 on Sleep Duration and Quality in Algerians

2020 ◽  
Vol 60 (2) ◽  
pp. 182-193
Author(s):  
Kacem Abdelhadi ◽  
Houar Abdelatif ◽  
Zerf Mohamed ◽  
Bengoua Ali
Keyword(s):  
Statistical Analysis ◽  
Sleep Quality ◽  
Sleep Duration ◽  
Online Survey ◽  
Public Awareness ◽  
Italian Version ◽  
Sleep Timing ◽  
Algerian Population ◽  
Significant Change ◽  
The Impact

SummaryThis study tests the impact of COVID-19 on sleep of Algerian population before and during the COVID-19 quarantine by an estimated online survey, adapted from the PSQI Italian version. Including 1210 participants (age between 18-60 years old). The statistical analysis was carried out using SPSS version 22.0 software. Our results showed a significant change in sleeping quality during quarantine, the sleep timing markedly changed, we also noticed additional use of sleeping medications. Algerian scientists recommend to build public awareness and to provide necessary information regarding Algerian sleep quality, especially for Algerian adults.

التغير المناخي واثره في المقنن المائي لمحصول العنب في محافظة ديالى

2019 ◽  
Vol 1 (34) ◽  
pp. 391-422
Author(s):  
اشواق حسن حميد صالح
Keyword(s):  
Climate Change ◽  
Statistical Analysis ◽  
Wind Speed ◽  
Extreme Temperature ◽  
Solar Brightness ◽  
The Subject ◽  
Climate Station ◽  
The Times ◽  
High Level ◽  
Very High

Climate change and its impact on water resources is the problem of the times. Therefore, this study is concerned with the subject of climate change and its impact on the water ration of the grape harvest in Diyala Governorate. The study was based on the data of the Khanaqin climate station for the period 1973-2017, (1986-2017) due to lack of data at governorate level. The general trend of the elements of the climate and its effect on the water formula was extracted. The equation of change was extracted for the duration of the study. The statistical analysis was also used between the elements of the climate (actual brightness, normal temperature, micro and maximum degrees Celsius, wind speed m / s, relative humidity% The results of the statistical analysis confirm that the water ration for the study area is based mainly on the X7 evaporation / netting variable, which is affected by a set of independent variables X1 Solar Brightness X4 X5 Extreme Temperature Wind Speed ​​3X Minimal Temperature and Very High Level .

RISK FACTORS FOR THE DEVELOPMENT OF INITIAL MANIFESTATIONS OF ATHEROGENIC CARDIOVASCULAR DISEASES IN PERSONNEL OF CHEMICALLY HAZARDOUS FACILITIES

2017 ◽  
pp. 2-7 ◽  
Author(s):  
V. A. Gorichny ◽  
D. Yu. Serdukov ◽  
A. V. Yazenok ◽  
A. V. Nosov ◽  
G. G. Zagorodnikov ◽  
...  
Keyword(s):  
Risk Factors ◽  
Statistical Analysis ◽  
Cardiovascular Diseases ◽  
Organophosphorus Compounds ◽  
Atherogenic Dyslipidemia ◽  
Chemical Weapons ◽  
Analysis Methods ◽  
High Incidence ◽  
And Control ◽  
Statistical Analysis Methods

An outpatient examination of 530 employees engaged in work with chemical weapons related to organophosphorus compounds at chemically hazardous facilities was carried out. Risk factors for the development of cardiovascular diseases of atherogenic etiology among personnel of the facilities were studied in relation to the type of work performed using statistical analysis methods. When assessing the lipidogram, a high incidence of atherogenic dyslipidemia in a group of personnel involved in the storage of chemical weapons was found out in comparison with a group of people engaged in the destruction and control of chemical weapons (73.1 vs 61.2 vs 59.6%, p

scholarly journals Towards a Smart E-Waste System Utilizing Supply Chain Participants and Interactive Online Maps

Recycling ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 8
Author(s):  
Tetiana Shevchenko ◽  
Michael Saidani ◽  
Yuriy Danko ◽  
Ievgeniia Golysheva ◽  
Jana Chovancová ◽  
...  
Keyword(s):  
Waste Management ◽  
Business Model ◽  
Electronic Waste ◽  
Precious Metals ◽  
Local Delivery ◽  
Waste Collection ◽  
Business Model Canvas ◽  
Online Maps ◽  
Delivery Services ◽  
Reduction Of Co2

Efficient electronic waste (e-waste) management is one of the vital strategies to save materials, including critical minerals and precious metals with limited global reserves. The e-waste collection issue has gained increasing attention in recent years, especially in developing countries, due to low collection rates. This study aims to search for progressive solutions in the e-waste collection sphere with close-to-zero transport and infrastructure costs and the minimization of consumers’ efforts towards an enhanced e-waste management efficiency and collection rate. Along these lines, the present paper develops a smart reverse system of e-waste from end-of-life electronics holders to local recycling infrastructures based on intelligent information technology (IT) tools involving local delivery services to collect e-waste and connecting with interactive online maps of users’ requests. This system considers the vehicles of local delivery services as potential mobile collection points that collect and deliver e-waste to a local recycling enterprise with a minimum deviation from the planned routes. Besides e-waste transport and infrastructure costs minimization, the proposed smart e-waste reverse system supports the reduction of CO2 through the optimal deployment of e-waste collection vehicles. The present study also advances a solid rationale for involving local e-waste operators as key stakeholders of the smart e-waste reverse system. Deploying the business model canvas (BMC) toolkit, a business model of the developed system has been built for the case of Sumy city, Ukraine, and discussed in light of recent studies.

scholarly journals Sonographic Signs of Adenomyosis in Women with Endometriosis Are Associated with Infertility

2021 ◽  
Vol 10 (11) ◽  
pp. 2355
Author(s):  
Dean Decter ◽  
Nissim Arbib ◽  
Hila Markovitz ◽  
Daniel S. Seidman ◽  
Vered H. Eisenberg
Keyword(s):  
Laparoscopic Surgery ◽  
Retrospective Study ◽  
Statistical Analysis ◽  
Conservative Management ◽  
Transvaginal Ultrasound ◽  
Control Group ◽  
Study Group ◽  
Control Groups ◽  
Increased Risk ◽  
And Control

We compared the prevalence of ultrasound signs of adenomyosis in women with endometriosis who underwent surgery to those who were managed conservatively. This was a retrospective study of women evaluated at a tertiary endometriosis referral center who underwent 2D/3D transvaginal ultrasound. Adenomyosis diagnosis was based on the presence of at least three sonographic signs. The study group subsequently underwent laparoscopic surgery while the control group continued conservative management. Statistical analysis compared the two groups for demographics, symptoms, clinical data, and sonographic findings. The study and control groups included 244 and 158 women, respectively. The presence of any, 3+, or 5+ sonographic signs of adenomyosis was significantly more prevalent in the study group (OR = 1.93–2.7, p < 0.004, 95% CI; 1.24–4.09). After controlling for age, for all findings but linear striations, the OR for having a specific feature was higher in the study group. Women in the study group with ≥ 5 sonographic signs of adenomyosis had more than twice the risk of experiencing infertility (OR = 2.31, p = 0.012, 95% CI; 1.20–4.45). Sonographic signs of adenomyosis are more prevalent in women with symptomatic endometriosis who underwent surgery compared with those who continued conservative management. Women with 5+ findings have a significantly increased risk of infertility. Adenomyosis on ultrasound should be considered in the management decisions regarding these patients.

scholarly journals Antimalarial Drugs in Ghana: A Case Study on Personal Preferences

Sci ◽  
2020 ◽  
Vol 2 (2) ◽  
pp. 28
Author(s):  
Prince Yeboah ◽  
Arnold Donkor Forkuo ◽  
Obed Kwabena Offe Amponsah ◽  
Nana Ofori Adomako ◽  
Ahmad Yaman Abdin ◽  
...  
Keyword(s):  
Public Awareness ◽  
Modern Medicine ◽  
Herbal Remedies ◽  
Prefer Treatment ◽  
Adverse Side Effects ◽  
Serious Infection ◽  
General Weakness ◽  
And Control

Malaria is a serious infection affecting millions of people in Africa. Our study investigated the personal preferences and applications of antimalarial medicines in Ghana. Based on over 1000 questionnaires distributed in Ghana from January to May 2019, we noticed that although Western medications to fight this disease are widely available, most patients in Ghana prefer treatment with locally produced herbal remedies. This preference appears to be due to a combination of traditional venues for obtaining medicines “on the street” rather than in licensed pharmacies, trust in local and “green” products, extensive advertisement of such local products, and an inherent distrust of imported and synthetic or unnatural medicines. Going local and natural is a trend also observed in other countries across the globe, and adds to the acceptance or rejection of drugs regardless of their activity or toxicity. In fact, adverse side effects associated with herbal remedies, such as general weakness and swollen, sore mouth, do not seem to deter the respondents of this study in Ghana. We propose a combination of (a) increasing public awareness of the benefits of modern medicine and (b) an improvement and control of the quality of herbal remedies to raise the standard of malaria treatment in countries such as Ghana.

Rietveld quantitative amorphous content analysis

2001 ◽  
Vol 34 (2) ◽  
pp. 196-202 ◽  
Author(s):  
A. G. De La Torre ◽  
S. Bruque ◽  
M. A. G. Aranda
Keyword(s):  
Content Analysis ◽  
Statistical Analysis ◽  
Systematic Errors ◽  
Rietveld Analysis ◽  
Tricalcium Silicate ◽  
Absorption Coefficients ◽  
Amorphous Content ◽  
Orientation Effects ◽  
Main Component ◽  
Very High

A procedure for Rietveld quantitative amorphous content analysis (RQACA) is outlined, in which the effects of systematic errors in the powder patterns are studied. The method derives the amorphous content from the small overestimation of an internal crystalline standard in a Rietveld refinement of an appropriate mixture. Of several standards studied, Al2O3gave the best results. The statistical analysis of standard mixtures with a known amount of amorphous content indicated that this is a precise and accurate tool. It enables the measurement of the amorphous content with an accuracy close to 1%. Sample preparation and Rietveld analysis need to be optimized in order to minimize the systematic errors. The analysis of samples with phases displaying strong preferred orientation effects gives very high errors in the amorphous content. Samples with different absorption coefficients have also been studied in order to evaluate the importance of microabsorption. This plays an important role but it can be adequately corrected if the absorption coefficients of the standard and the sample are not very different. RQACA has been applied to tricalcium silicate, C3S, which is the main component of Portland cement. The average amorphous content of C3S, after microabsorption correction using two standards of higher and lower absorption coefficients, was found to be 19%.

Sign in / Sign up

Export Citation Format

Share Document