Low Risk Level Research Articles

RISK ANALYSIS OF SHARIA STOCKS IN THE INFRASTRUCTURE, UTILITIES AND TRANSPORTATION SECTOR LISTED ON THE JAKARTA ISLAMIC INDEX (JII) 2015-2023

This research is intended to analyze the risk comparison using the Value at Risk (VaR) Variance Covariance and Value at Risk (VaR) Historical Simulation models in the Infrastructure, Utilities and Transportation subsectors. The development of infrastructure, utilities, and transportation plays a very important role in national development and is the main driver of regional growth and the industrial sector. Improvements in the regulatory and investment policy framework are expected to significantly increase the availability of infrastructure facilities and services. The population involved in this study includes 9 companies listed in the JII in the Infrastructure, Utilities, and Transportation sector, which are used as samples. The data used is secondary data obtained from www.yahoo.finance.com. Data analysis was carried out using a two-sample average test. The test results of the Value at Risk (VaR) Historical Simulation and Variance Covariance values are largest in INDX stocks, followed by other stocks, and those with the lowest risk level are TLKM stocks for the upcoming 5-day, 7-day, and 15-day periods with good values for alpha 1%, 5%, and 10%. The results concluded that the comparison between VaR Variance Covariance and VaR Historical Simulation produces a good level of risk and helps in determining sectors that are worth investing in the future, and can describe the fundamental strength of each sector.

Distribution and adsorption-desorption of organophosphate esters from land to sea in the sediments of the Beibu Gulf, South China Sea: Impact of seagoing river input

Organophosphate esters (OPEs) have been a class of emerging environmental contaminants. However, studies on their environmental behavior, specifically their adsorption-desorption behavior between sediment and seawater in estuarine and coastal areas, remain limited. To address this gap, our study focused on investigating the levels and behavior of 11 OPEs in sediment samples collected from the Beibu Gulf, South China Sea, encompassing estuaries and coastal regions. The total concentrations of 11 OPEs (Σ11OPEs) in the sediments exhibit a significant decrease in summer, both in seagoing rivers (4.67 ± 2.74 ng/g dw) and the coastal zone (5.11 ± 3.71 ng/g dw), compared to winter levels in seagoing rivers (8.26 ± 4.70 ng/g dw) and the coastal zone (7.71 ± 3.83 ng/g dw). Chlorinated OPEs dominated the sediments, constituting 63 %–76 % of the total. Particularly, port and mariculture areas showed the highest levels of OPEs. Through load estimation analysis, it was revealed that the sedimentary OPEs in Qinzhou Bay (221 ± 128 kg) had the highest load, with input from the Qin River identified as a significant source. Chlorinated OPEs showed a trend of desorption from sediments to the water column with increasing salinity, emphasizing the crucial role of land-based OPEs input through suspended particulate matter in rivers as a pathway to the ocean. The impact of strong flow in estuarine environments was highlighted, as it can scour sediments, generate suspended sediments, and release OPEs into the water bodies. Additionally, the results of the ecological risk assessment indicated that most of the OPEs posed low-risk levels. However, attention is warranted for the contamination levels of some chlorinated OPEs, emphasizing the need for ongoing monitoring and assessment.

PENGELOMPOKAN TINGKAT RESIKO PENYAKIT JANTUNG BERDASARKAN USIA MENGGUNAKAN ALGORITMA K-MEANS

Heart disease is one of the non-communicable diseases that can cause death, This disease occurs due to a narrowing of the blood vessels so as to cause impaired heart function Some of the causes of heart disease are one of them based on age, basically heart disease can be prevented by various factors including a healthy lifestyle, besides that early detection of heart disease is also needed to prevent death in sufferers One way to do early detection is to use data mining. The use of the k-means algorithm can be done to cluster the grouping of heart diseases by age to find out someone is exposed to the cause of high and low heart disease. Based on these problems, this study uses the CRISP-DM (Cross-Industry Standard Process for Data Mining) method with several stages such as Business Understanding, Data Understanding, Data preparation, Modeling, Evaluation, and Deployment. The clustering method with the k-means algorithm in this study shows a new insight, namely grouping the risk level of heart disease based on 3 clusters. Cluster 0 is an age category with a fairly low risk level of heart disease or Low, which is 355 out of 1025 age categories tested, then cluster 1 is an age category with a moderate or Medium heart disease risk level, which is 208 out of 1025 age categories tested, and finally cluster 2 is an age category with a fairly high age category or High, which is 462 out of 1025 age categories tested.

Financial Openness, Bank Systematic Risk, and Macroprudential Supervision

International experiences have underscored the dual implications of financial openness. Given China’s unique circumstances and its escalating level of financial openness, it is crucial to assess potential impacts on the country’s bank systemic risk. This paper uses the quarterly data of 37 listed banks in China from 2010 to 2022 to explore the relationship between financial openness and systemic risk of the banking system, the mechanism of action, and the moderating effect of macroprudential policy on the two. The findings indicate an inverted “U”-shaped correlation between financial openness and bank systemic risk. On one side of this shape, financial openness primarily exacerbates funding mismatch, thereby increasing the systemic risk of banks. Conversely, on the other side, it primarily alleviates systemic risk by optimizing capital management. Moreover, with the help of macroprudential supervision, the inverted “U”-shaped relationship between financial openness and bank systemic risk leads to a lower level of systemic risk and, at the same time, promotes the early arrival of the inverted “U”-shaped inflection point between financial openness and bank systemic risk. Notably, the impact of financial openness on the systemic risk of joint-stock commercial banks, urban commercial banks, and rural commercial banks is more significant. The above research results provide a regulatory reference for effectively preventing and resolving systemic risk while achieving high-quality openness to the outside world. In deepening financial openness, the banking industry needs to pay attention to the funding mismatch and the efficiency of capital management and implement differential risk supervision and prevention mechanisms for banks with different ownership, which is conducive to the reduction of bank systematic risk.

Research on Portfolio Management in Financial Markets Against the Background of the Epidemic

Portfolio management serves as an important role in risk management, therefore, the paper intends to study its role in risk hedging and the influence of the COVID-19 pandemic on certain examples, whose data are from Yahoo Finance. The main methodology is to apply mathematical models on collected data and study the effectiveness of portfolio management including portfolio optimization and time series analysis. It can be concluded from the results that different stocks have different similarities according to the clustering results. A fixed portfolio is best suited for real capital assets in pursuit of lower risk level and higher profits under a relatively stable circumstance. And the pandemic has direct impacts on the stock price including higher variance and higher level of volatility. The meaning for this research is give illustrations and models that can be further applied in real financial markets added with the consideration of significant events such as pandemic.

Response of hydrological ecosystem services to land-use change and risk assessment in Jiangxi Province, China

Water bodies provide humans with important hydrological ecosystem services (HESs), directly or indirectly. Water yield, water conservation, and soil conservation are essential to HESs. Since China's reform and opening up, and with its rapid socio-economic development, land use in Jiangxi Province has undergone drastic change, resulting in threats to the ecological environment. This paper evaluates three HESs, water yield, water conservation, and soil conservation, in Jiangxi Province based on land use and rainfall data, quantifies the impacts of different land classes on each ecosystem, predicts future land use using the patch-generating land use simulation (PLUS) model, and finally, discusses the ecological risks in the study area. The following results were obtained: (1) The HESs in the basin increased and then decreased from 2000 to 2020, and the spatial distribution of water yield and water conservation was greatly influenced by rainfall. Soil conservation was mostly consistent with the elevation distribution. (2) Over time, the overall aggregation of HESs in the study area increased. There were small differences in the effects of various land uses on water yield and water conservation, and large differences in the effects on soil conservation. (3) The distribution of ecological risks was not affected by different land use strategies, with the lower ecological risk level 1 dominating. Most risk areas were present in Ganzhou, Ji'an, Shangrao, and Jiujiang. The ecological risk from urban sprawl (US) accounted for the most significant proportion, and that from the ecological protection (EP) strategy accounted for the lowest proportion. This study provides reference for sustainable land use development and ecological risk prevention in the study area.

Attitudes and Laws About Abortion Are Linked to Extrinsic Mortality Risk: A Life-History Perspective on Variability in Reproductive Rights

Abortion policy is conventionally viewed as a political matter with religious overtones. This article offers a different view. From the perspective of evolutionary biology, abortion at a young age can represent prioritization of long-term development over immediate reproduction, a pattern established in other animal species as resulting from stable ecologies with low mortality risk. We examine whether laws and moral beliefs about abortions are linked to local mortality rates. Data from 50 U.S. states, 202 world societies, 2,596 adult individuals in 363 U.S. counties, and 147,260 respondents across the globe suggest that lower levels of mortality risk are associated with more permissive laws and attitudes toward abortion. Those associations were observed when we controlled for religiosity, political ideology, wealth, education, and industrialization. Integrating evolutionary and cultural perspectives offers an explanation as to why moral beliefs and legal norms about reproduction may be sensitive to levels of ecological adversity.

Integrated Use of GIS and USLE Models for LULC Change Analysis and Soil Erosion Risk Assessment in the Hulan River Basin, Northeastern China

The Hulan River Basin is located in the black soil region of northeast China. This region is an important food-producing area and the susceptibility of black soil to erosion increases the risk of soil erosion, which is a serious environmental problem that affects agricultural productivity, water supply, and other important aspects of the region. In this paper, the changes in LULC (land use and land cover) in the basin between 2001 and 2020 were thoroughly analysed using GIS (geographic information system) and USLE (universal soil loss equation) models. The soil erosion risk in the Hulan River Basin between 2001 and 2020 was also studied and soil erosion hot spots were identified to target those that remained significant even under the implementation of soil conservation measures. Precipitation data were used to obtain the R factor distribution, LULC classification was adopted to assess the C factor distribution, soil data were employed to estimate the K factor distribution, DEM (Digital Elevation Model) data were used to generate an LS factor map, and slope and LULC data were considered to produce a P factor distribution map. These factors were based on the model parameters of the USLE. The findings of LULC change analysis over the last 20 years indicated that, while there have been nonobvious changes, agricultural land has continued to occupy the bulk of the area in the Hulan River Basin. The increase in areas used for human activities was the most notable trend. In 2001, the model-predicted soil erosion rate varied between 0 and 120 t/ha/yr, with an average of 4.63 t/ha/yr. By 2020, the estimated soil erosion rate varied between 0 and 193 t/ha/yr, with an average of 7.34 t/ha/yr. The Hulan River Basin was classified into five soil erosion risk categories. Most categories encompassed extremely low-risk levels and, over the past 20 years, the northeastern hilly regions of the basin have experienced the highest concentration of risk change areas. The northeastern hilly and mountainous regions comprised the risk change area and the regions that are most susceptible to erosion exhibited a high concentration of human production activities. In fact, the combined use of GIS and USLE modelling yielded erosion risk areas for mapping risk classes; these results could further assist local governments in improving soil conservation efforts.

The change in Fibrosis-4 index in Japanese patients with type2 diabetes treated by a fixed-ratio combination therapy of insulin degludec and liraglutide: A retrospective observational study.

The efficacy of titratable fixed-ratio combination therapy by a combination preparation of insulin degludec and liraglutide (IDegLira) in Japanese patients with type2 diabetes, focusing particularly on the change in Fibrosis-4 index (FIB-4), a noninvasive method for the evaluation of liver fibrosis, was investigated. As the full analysis set, 113 patients were treated with IDegLira. The patients were categorized into two groups according to the absence (GLP-1RA-naïve group, n=72) or presence (GLP-1RA-treated group, n=41) of glucagon-like peptide-1 receptor agonist (GLP-1RA) use before starting IDegLira. The clinical parameters were retrospectively determined over 6months. The glycated hemoglobin value was significantly reduced in both groups. The bodyweight significantly decreased from 67.4±11.0kg at baseline to 66.4±11.6kg at 6months in the GLP-1RA-naïve group, although it slightly increased in the GLP-1RA-treated group. FIB-4 significantly decreased from 1.60±0.84 at baseline to 1.49±0.74 at 6months in the GLP-1RA-naïve group. Although FIB-4 significantly increased in the GLP-1RA-treated group, it remained within the low-risk level for liver fibrosis. Fixed-ratio combination therapy using IDegLira for the treatment of type2 diabetes is useful for glycemic control and weight management. In particular, IDegLira may be more effective for lowering FIB-4 than adding unused oral antidiabetic agents or increasing the dose of insulin in GLP-1RA-naïve patients.

Regional cortical brain volumes at treatment entry relates to post treatment WHO risk drinking levels in those with alcohol use disorder

Abstinence following treatment for alcohol use disorder (AUD) is associated with significant improvements in psychiatric and physical health, however, recent studies suggest resumption of low risk levels of alcohol use can also be beneficial. The present study assessed whether post-treatment levels of alcohol use were associated with cortical brain volumedifferences at treatment entry. Individuals seeking treatment for AUD (n=75) and light/non-drinking controls (LN, n=51) underwent 1.5T magnetic resonance imaging. The volumes of 34 bilateral cortical regions of interest (ROIs) were quantitated via FreeSurfer. Individuals with AUD were classified according to post-treatment alcohol consumption using the WHO risk drinking levels (abstainers: AB; low risk: RL; or higher risk: RH). Regional volumes for AB, RL and RH, at treatment entry, were compared to LN. Relative to LN, AB demonstrated smaller volumes in 18/68 (26%), RL in 24/68 (35%) and RH in 34/68 (50%) ROIs with the largest magnitude volume differences observed between RH and LN. RH and RL reported a higher frequency of depressive disorders than AB. Among RH and RL, level of depressive and anxiety symptomatology were associated with daily number of drinks consumed after treatment. Volumetric differences, at treatment entry, in brain regions implicated in executive function and salience networks corresponded with post-treatment alcohol consumption levels suggesting that pre-existing differences in neural integrity may contribute to treatment outcomes. Depressive and anxiety symptomatology was also associated with brain morphometrics and alcohol use patterns, highlighting the importance of effectively targeting these conditions during AUD treatment.

Phenolic compounds occurrence and human health risk assessment in potable and treated waters in Western Cape, South Africa.

Phenolic pollutants from industrial and agricultural activities pose a major threat to the world's potable water supply. The persistent micro-pollutants often find their way into drinking water sources with possible adverse human health implications. In this study, bottled water, tap water, and wastewater treatment plant (WWTP) effluent samples from the Boland region of the Western Cape, South Africa were assessed to determine 4-chlorophenol (4-CP) and 2,4-dichlorophenol (2,4-DCP) levels using HPLC/DAD instrumentation. The selected area is known for its vast agricultural ventures and wineries. Evaluation of the human health risk (cancer risk) for the pollutants was conducted using the hazard quotient (HQ). The Ames mutagenicity test was also conducted using the Salmonella typhimurium T98 and T100 strains and the S9 activation enzyme. Trace levels of the phenolics were detected in the samples with a range of 9.32 × 10-7-1.15 × 10-4mg/L obtained for 4-CP, and 8.80 × 10-7-1.72 × 10-4mg/L recorded for 2,4-DCP. Both compounds had levels below the limit of 0.01mg/L prescribed by South African legislation. The assessed HQ for the phenolic concentrations indicates a low level of potential ecological risk and none of the samples had a cancer risk value that exceeded the regulatory limit. The possibility of the analyzed samples causing cancer is unlikely, but non-carcinogenic adverse effects were found. Strong mutagenicity was observed for the T98 strains with a potential ability to cause mutation toward the insertion or deletion of a nucleotide. The T100 bacterial strain showed very slight mutagenicity potential, however, it is unlikely to cause any mutation. The levels of phenolics in the potable water samples may pose a significant threat to human health. Hence, screening persistent organic chemicals in potable water sources and evaluating their potential human health effects is pertinent to prevent associated health challenges.

Birth Weight and Third-trimester Maternal Vitamins A, C, and E Levels

Background: Deficiencies of micronutrients (especially vitamins C, A, and E) during intra-uterine life have been linked with the possibility of increased risk of some diseases (e.g. cardiovascular disease and type 2 diabetes) in adulthood.
 Aims: Therefore, it becomes expedient that persistent and vigorous attention be paid to maternal vitamin status during gestation.
 Methodology: This is a cross-sectional comparative study carried out at maternity centres in Osogbo Local Government. Forty women who were at least 29 weeks of gestation and 40 apparently healthy women, age-matched, non-pregnant constituted the test and control groups respectively. Blood was obtained through an ante-cubital vein, centrifuged and used for vitamin estimations (High-Performance Liquid Chromatography). Birth weight and neonatal mortality ratio were the birth outcomes that were obtained. Data analysis was by Student’s t-test and Pearson’s correlation coefficient. P≤0.05 was considered significant.
 Results: Serum status of vitamins A (2.68±3.88 µg/dL); C (0.95±0.44 mg/dL); and E (0.67±0.04 mg/dL) were significantly lower at third trimester compared with the corresponding values of 6.98±1.26 µg/dL; 2.99±0.11 mg/dL; and 1.66±0.08 mg/dL among non-pregnant control. There were significant adverse pregnancy outcomes as signified by 10% stillbirths. In addition, low birth weight (1.5-2.4 kg) was observed among approximately 50% of the babies but no correlation was observed except between vitamins C and E.
 Conclusions: The results of this study revealed that among Nigerian pregnant women, there are risks of abnormal birth outcomes and low levels of vitamin A, C, and E. Aside depletions in vitamin C and E, the results of the study (r= .376; p= .020) suggest possible metabolic interaction between both.

Risk, sensitive analysis, and optimization of a new multi-generation system activated by solar and biomass energies

In recent years, the use of clean energies has become much more important due to the increase of environmental pollutants and the reduction of fossil fuel resources. Another important parameter in the establishment of energy systems is the assessment of the risks caused by the construction of the system and the provision of operational solutions to manage and reduce these risks. In this research, a new multi-generation system that is activated using solar and biomass energies has been evaluated thermodynamically and thermo-risky. This system consists of a Brayton cycle, a steam Rankine cycle, a transcritical CO2 cycle, a proton membrane electrolyzer (PEME) unit, and an internal combustion engine (ICE). A notable characteristic of the proposed system is its capability to recover waste heat from the gas turbine cycle, which is subsequently utilized to drive both a steam Rankine cycle and a transcritical CO2 cycle. The sensitivity analysis has been performed to investigate the effects of the input parameters on the system performance and finally, an optimization for the effective parameters of the system has been conducted. The results of the calculations show that the proposed system has energy and exergy efficiencies of 22.05 % and 15.93 %, respectively. The risk analysis was conducted by considering the potential hazards such as jet fires, jet of combusted gases, and system overpressure. The analysis indicates that the system poses a low level of risk. The overall risk, along with the risk per unit of system exergy, has been estimated at 4.247 × 10–8 injuries/year and 3.73 × 10–11 injuries/year.kW, respectively. In optimal conditions, the energy and exergy efficiency of the system reaches 25.79 % and 19.08 %.

Altered Impulsivity Across Drug-Naïve Parkinsonism, Isolated Rapid Eye Movement Sleep Behavior Disorder, and Their High-Risk Relatives.

To determine multidimensional impulsivity levels across different early stages of α-synucleinopathy. This cross-sectional study investigated motor and decisional impulsivity levels using a panel of computerized tasks among drug-naïve parkinsonism patients, isolated/idiopathic rapid eye movement sleep behavior disorder (iRBD) patients and their first-degree relatives (iRBD-FDRs), and control participants. Trait impulsivity and impulse control behaviors were assessed by self-reported questionnaires. A total of 27 drug-naïve parkinsonism patients, 157 iRBD patients, 66 iRBD-FDRs, and 82 control participants were recruited. Parkinsonism and iRBD patients had fewer numbers of extracted beads in beads task 1 and 2 (both p < 0.001), and a higher rate of irrational choice in task 1 (p = 0.046) before making decisions, and fewer numbers of pumps of unexploded blue balloons in the balloon analog risk task (p = 0.004) than control participants, indicating a higher level of reflection impulsivity and a lower level of risk taking, respectively. iRBD patients had more no-go errors in the go/no-go task than control participants (padjusted = 0.036), suggesting a higher level of motor impulsivity. iRBD-FDRs with dream-enactment behaviors had fewer numbers of extracted beads (p = 0.047) in beads task 2 than FDRs without dream-enactment behaviors, suggesting a possible higher level of reflection impulsivity. A complex construct of altered impulsivity with decreased risk taking, but increased reflection and motor impulsivity, has already occurred at the prodromal and early stages of α-synucleinopathy, which have implications for underlying pathophysiology and clinical management of α-synucleinopathy, especially for impulse control behaviors upon dopaminergic drug treatment. ANN NEUROL 2024;95:544-557.

Ethanolamine as a biomarker and biomarker-based therapy for diabetic retinopathy in glucose-well-controlled diabetic patients

Diabetic retinopathy (DR) is the leading cause of blindness among the working-age population. Although controlling blood glucose levels effectively reduces the incidence and development of DR to less than 50%, there are currently no diagnostic biomarkers or effective treatments for DR development in glucose-well-controlled diabetic patients (GW-DR). In this study, we established a prospective GW-DR cohort by strictly adhering to glycemic control guidelines and maintaining regular retinal examinations over a median 2-year follow-up period. The discovery cohort encompassed 71 individuals selected from a pool of 292 recruited diabetic patients at baseline, all of whom consistently maintained hemoglobin A1c (HbA1c) levels below 7% without experiencing hypoglycemia. Within this cohort of 71 individuals, 21 subsequently experienced new-onset GW-DR, resulting in an incidence rate of 29.6%. In the validation cohort, we also observed a significant GW-DR incidence rate of 17.9%. Employing targeted metabolomics, we investigated the metabolic characteristics of serum in GW-DR, revealing a significant association between lower levels of ethanolamine and GW-DR risk. This association was corroborated in the validation cohort, exhibiting superior diagnostic performance in distinguishing GW-DR from diabetes compared to the conventional risk factor HbA1c, with AUCs of 0.954 versus 0.506 and 0.906 versus 0.521 in the discovery and validation cohorts, respectively. Furthermore, in a streptozotocin (STZ)-induced diabetic rat model, ethanolamine attenuated diabetic retinal inflammation, accompanied by suppression of microglial diacylglycerol (DAG)-dependent protein kinase C (PKC) pathway activation. In conclusion, we propose that ethanolamine is a potential biomarker and represents a viable biomarker-based therapeutic option for GW-DR.

Assessing the Risk of Stroke among the Patients with Diabetes Mellitus in a Tertiary Care Hospital

Diabetes mellitus is a recognised independent risk factor for stroke as it contributes to the progression of atherothrombotic cerebrovascular lesions. Diabetic patients have a 1.5 to 3 times higher risk of stroke, especially cerebral infarction, than non-diabetic subjects. The study aimed to assess the level of risk on stroke among the patients with diabetes mellitus in a tertiary care hospital of South India. The study design was cross sectional descriptive research type. The study participants (n=196) were having diabetes type I or type II, above 18 years, with or without comorbidity who attended diabetic out-patient department of the hospital. National stroke association’s stroke risk score card was used to assess the level of risk on stroke; data was collected by face to face interview method. Majority of the diabetic patients had caution level of risk (n=166, 84.7%); 30 (15.3%) patients had high level of risk and none of the participants (0%) had low level of risk. The level of risk of stroke among the patients with diabetes mellitus mean and standard deviation was 13.87+2.288. The study showeds that diabetics had risk of getting stroke though not high risk. The patients following healthy life style can prevent stroke in future.

Stock Portfolio Optimization with Support of Python

: Securities business activities are understood as the activities of organizations, individuals, securities companies, stock brokers and other intermediary financial institutions in the stock market to perform operations. Securities trading aims to make a profit. A common task in portfolio management is to find the optimal investment portfolio according to the return and risk approach, that is, for the same level of risk, portfolio whose highest return gives is the optimal investment portfolio. Similarly, corresponding to the same predetermined rate of return, the portfolio with the lowest level of risk is the optimal investment portfolio. There are several popular data analysis tools today, including Python. This article will demonstrate the application of Python tools in data analysis to determine optimal stock investment portfolios.

Water Safety Practices Along the Water Service Chain in Addis Ababa: A Cross-Sectional Study in a Cosmopolitan City.

This study investigated water safety practices and risk levels along Addis Ababa's water supply service chain. The data came from 23 random woredas, 384 random households, 115 microbiological water quality tests, and diagnostic inspections from source to point of use. Findings from this study indicate that the surface water sources (53%) and the water source catchments (62%) are characterized by very high-risk and high risk contamination levels respectively. Conversely, the water treatment process (5%) and temporary reservoir (20%) indicates a low risk level. Whereas the water distribution system (40%), water source boreholes (44%), and Household level (29%) water safety practices are identified as medium risk levels. The microbial analysis of the drinking water at the source and point of use indicated low (<11 CFU/100 ml) to high levels (>100 CFU/100 ml) of risk with significant levels of contamination at the household level. Moreover, the household-level water safety practice assessment revealed intermediate to very high levels of risks. The Chi2 test shows that water supply type is significantly associated with occupation(X2(12,384) = 23.44, P < .05) and education(X2(8,384) = 15.4, P < .05). Multinomial regression analysis also showed better occupation is associated with increased access to safe bottled water compared to safe piped water on premises. It can be concluded that the water safety practice encountered low to very high levels of risk of contamination at different components along the water supply service chain and the household level. This study suggests ways to improve Addis Ababa residents' health and well-being through water safety interventions. These include safeguarding water sources, supporting local safe water businesses, providing household water treatment, and handling options, and addressing the barriers and incentives for adopting safe water practices.

Optimization of Agricultural Economic Management Model and Risk Control Based on Marginal Analysis Approach

Abstract The basic feature of intertwining natural reproduction and economic reproduction in agricultural economic management determines its high risk. This paper calculates the marginal value of each variable input factor in the agricultural economic management mode through the total income function and analyzes the optimal combination between each variable input factor and agricultural output by combining with the theory of diminishing marginal returns so as to maximize the economic returns in the agricultural economic management mode and achieve the optimization of risk management and control in the agricultural economic management mode. The results of the example show that if the incremental index in the agricultural economic management model of Gansu Province is greater than the level of the previous year, the growth of expenses in the agricultural economy is considered effective. It is also found that the risk of natural disasters is the highest in the agricultural economic management model in Gansu Province, especially the average risk value of wind and hailstorms reaches 1.143, which is much higher than the risk of grain production (0.031), which has the lowest risk level. This paper provides an effective reference for optimizing the effective control of risk in the agricultural economic management model and lays the foundation for improving the economic efficiency of the agricultural economic management model.

Addressing Work Posture and Ergonomic Risk Factors in Traditional Batik-Making: A Case Study of MSME Batik Bakaran Juwana Workers

This research was conducted on batik-making workers. Based on observations, the batik process making is done manually using inappropriate work postures and repetitive movements that can trigger complaints musculoskeletal. This research aims to analyze work posture and ergonomic risk factors in the process of making batik. The research method used is WERA and NERPA. The research was conducted at 8 stations with 10 activities carried out by 43 workers. The results of the WERA method show that there are 2 activities at the low-risk level and 8 activities at a medium-risk level, so the activities require further research and need changes. While the NERPA method showed that there were three activities with a score of 3 namely, two activities with a score of 4, two activities with a score of 6, and three activities with a score of 7. Activities with scores of 6 and 7 not only require further investigation but also require changes. These activities are cloth dyeing, cloth dyeing in dyeing tubs, cloth dyeing in boiling furnaces, cloth washing and cloth drying. Proposed improvements include using a table, raising the water tank, raising the stove, providing a water tank, and lowering the height of the drying area.