Analyzing Research for the Difference of Welfare Attitude in Each Field from Residential Areas

2019 ◽  
Vol 2019 (7) ◽  
pp. 461-464
Author(s):  
Hong-Soon KIM ◽  
Myung-Hee JUNG
Keyword(s):  
Residential Areas ◽  
The Difference

Case study: Prediction and field tests of railway noise and effects of a low-height noise barrier

2020 ◽  
Vol 68 (4) ◽  
pp. 303-314
Author(s):  
Yuna Park ◽  
Hyo-In Koh ◽  
University of Science and Technology, Transpo ◽  
University of Science and Technology, Transpo ◽  
University of Science and Technology, Transpo ◽  
...  
Keyword(s):  
High Speed ◽  
Field Tests ◽  
Residential Areas ◽  
Railway Systems ◽  
Railway Noise ◽  
Sound Levels ◽  
Noise Barrier ◽  
The Difference ◽  
Reduction Effect ◽  
The Impact

Railway noise is calculated to predict the impact of new or reconstructed railway tracks on nearby residential areas. The results are used to prepare adequate counter- measures, and the calculation results are directly related to the cost of the action plans. The calculated values were used to produce noise maps for each area of inter- est. The Schall 03 2012 is one of the most frequently used methods for the production of noise maps. The latest version was released in 2012 and uses various input para- meters associated with the latest rail vehicles and track systems in Germany. This version has not been sufficiently used in South Korea, and there is a lack of standard guidelines and a precise manual for Korean railway systems. Thus, it is not clear what input parameters will match specific local cases. This study investigates the modeling procedure for Korean railway systems and the differences between calcu- lated railway sound levels and measured values obtained using the Schall 03 2012 model. Depending on the location of sound receivers, the difference between the cal- culated and measured values was within approximately 4 dB for various train types. In the case of high-speed trains, the value was approximately 7 dB. A noise-reducing measure was also modeled. The noise reduction effect of a low-height noise barrier system was predicted and evaluated for operating railway sites within the frame- work of a national research project in Korea. The comparison of calculated and measured values showed differences within 2.5 dB.

scholarly journals Visualizing Social and Behavior Change due to the Outbreak of COVID-19 Using Mobile Phone Location Data

2021 ◽  
Author(s):  
Takayuki Mizuno ◽  
Takaaki Ohnishi ◽  
Tsutomu Watanabe
Keyword(s):  
Behavior Change ◽  
Mobile Phone ◽  
Shopping Centers ◽  
Residential Areas ◽  
Night Time ◽  
Location Data ◽  
The Difference ◽  
And Behavior

AbstractWe visualize the rates of stay-home for residents by region using the difference between day-time and night-time populations to detect residential areas, and then observing the numbers of people leaving residential areas. There are issues with measuring stay-home rates by observing numbers of people visiting downtown areas, such as central urban shopping centers and major train stations. The first is that we cannot eliminate the possibility that people will avoid areas being observed and go to other areas. The second is that for people visiting downtown areas, we cannot know where they reside. These issues can be resolved if we quantify the degree of stay-home using the number of people leaving residential areas. There are significant differences in stay-home levels by region throughout Japan. By this visualization, residents of each region can see whether their level of stay-home is adequate or not, and this can provide incentive toward compliance suited to the residents of the region.

scholarly journals The Urban Characteristics of High Economic Resilient Neighborhoods during the COVID-19 Pandemic: A Case of Suwon, South Korea

2021 ◽  
Vol 13 (9) ◽  
pp. 4679
Author(s):  
Sungjo Hong ◽  
Seok-Hwan Choi
Keyword(s):  
Credit Card ◽  
Residential Area ◽  
Small Scale ◽  
Residential Areas ◽  
Economic Resilience ◽  
Parents And Children ◽  
The Difference ◽  
Post Hoc ◽  
High Degree ◽  
Urban Characteristics

Infectious diseases and pandemics, including the COVID-19 pandemic, have a huge economic impact on cities. However, few studies examine the economic resilience of small-scale regions within cities. Thus, this study derives neighborhoods with high economic resilience in a pandemic situation and reveals their urban characteristics. It evaluates economic resilience by analyzing changes in the amount of credit card payments in the neighborhood and classifying the types of neighborhoods therefrom. The study conducted the ANOVA, Kruskal–Wallis, and post hoc tests to analyze the difference in urban characteristics between neighborhood types. Accordingly, three neighborhood types emerged from the analysis: high-resilient neighborhood, low-resilient neighborhood, and neighborhood that benefited from the pandemic. The high-resilient neighborhood is a low-density residential area where many elderly people live. Neighborhoods that benefited are residential areas mainly located in high-density apartments where many families of parents and children live. The low-resilient neighborhood is an area with many young people and small households, many studio-type small houses, and a high degree of land-use mix.

scholarly journals Automatic Cleaning System Design to Increase PV Panel Output Power

2021 ◽  
Vol 1 (2) ◽  
pp. 59-66
Author(s):  
Muhammad Zulfahmi ◽  
RD Kusumanto ◽  
Yohandri Bow
Keyword(s):  
Output Power ◽  
Average Output Power ◽  
High Elevation ◽  
Mining Activities ◽  
Solar Power Plant ◽  
Residential Areas ◽  
Average Output ◽  
Pv Panel ◽  
Cleaning System ◽  
The Difference

The existence of the Township Housing, which is currently near the coal mine site, precisely in Tanjung Enim, South Sumatra, with a relatively open area (41 Ha) and a relatively high elevation of approximately 100 meters over the sea level, has the potential to be installed with PV panels as a solar power  plant.  Installation  of  PV  panels  in  residential  areas  close  to  coal mining activities has the potential to indirectly generate a lot of mine dust which can reduce the amount of light received by the PV panels, which in turn can affect the output power of the PV panels. The purpose of this study is to analyze the use of an automatic cleaning system to increase the output power of PV panels by comparing the output power of PV panels produced between PV panels with an automatic cleaning system in the form of a water sprayer with PV panels that are not equipped with a water sprayer (standard PV installation). The use of an automatic cleaning system shows an increase in the average output power of 44.56 Watt. The difference between Isc PV water sprayer and normal PV is 0.5513 A. Iload measurement on PV water sprayer is 0.1973 A higher than normal PV, while for VOC PV panel water sprayer is smaller than normal PV is about 0.45 V. For PV water sprayer Vload is 0.431 V is more significant than normal PV panels. Meanwhile, for the generated load power or Pload, the PV water sprayer is 9.47 watts higher than normal PV. From all these values, the average efficiency produced by PV water sprayer is 1.81% greater than the efficiency produced by normal PV. This study shows that PV using a water sprayer produces an average output power of 44.56 watts

scholarly journals Study of Perceived Accessibility in Daily Travel within the Metropolis

2021 ◽  
Vol 5 (6) ◽  
pp. 868-883
Author(s):  
Anastasia Vladimirovna Lukina ◽  
Roman Roaldovich Sidorchuk ◽  
Sergey Vladimirovich Mkhitaryan ◽  
Anastasia Alexeevna Stukalova ◽  
Irina Ivanovna Skorobogatykh
Keyword(s):  
Cross Sectional Study ◽  
Residential Areas ◽  
Cross Sectional ◽  
Transport Accessibility ◽  
Synthetic Index ◽  
Statistical Program ◽  
The Difference ◽  
Social Demographic ◽  
The Impact ◽  
The Relationship

The growth of metropolises and the number of vehicles cruising within their boundaries creates a permanent problem of dissatisfaction with transport accessibility. This study aims to identify the difference between perceived (PA) and objective (OA) transport accessibility. For its implementation, it was necessary: to explore PA between different residential areas and travel modes, reveal the influence of the travel regime on the PA, compare the impact of social-demographic factors on the individuals' PA. The research methodology is based on a large cross-sectional study with 2,275 respondents. A quota sample was used for 12 administrative districts of the Moscow metropolis. The data was processed by IBM SPSS Statistics 20 statistical program to obtain descriptive statistics indicators. Correlation analysis of the respondent's answers to the four items for PA assessment was performed to assess the relationship between the results of the solutions. Next, a synthetic index of PA was calculated and analyzed differences using the integral index PA. The relationship significance was assessed using F-criterion-based one-way ANOVA. The novelty of our study is as follows: it contributes to previous research on the possibility of measuring perceived affordability in metropolitan areas and benchmarking OA and RA. Doi: 10.28991/esj-2021-01316 Full Text: PDF

scholarly journals Pertumbuhan dan Perkembangan Anak Usia 3-24 Bulan di Daerah Konflik

2014 ◽  
Vol 9 (1) ◽  
pp. 44
Author(s):  
Hastuti Usman ◽  
Hadyana Sukandar ◽  
Ma’mun Sutisna
Keyword(s):  
Growth And Development ◽  
Maternal Education ◽  
Growth Failure ◽  
Residential Areas ◽  
Cross Sectional ◽  
Abnormal Growth ◽  
Confounding Variables ◽  
The Difference ◽  
Conflict Risk ◽  
And Gender

Lima tahun pertama adalah masa penting dalam proses tumbuh kembang anak. Anak lahir dan tinggal di daerah rawan bencana (bencana alam, perang, atau konflik bersenjata) berisiko mengalami kegagalan pertumbuhan dan keterlambatan perkembangan. Penelitian ini bertujuan mengukur perbedaan pertumbuhan dan perkembangan anak usia 3 - 24 bulan antara yang tinggal di daerah konflik dan bukan konflik dan menganalisis korelasi tempat tinggal daerah konflik dengan pertumbuhan serta perkembangan anak usia 3 - 24 bulan. Metode penelitian secara potong lintang dilakukan di Kabupaten Poso periode Februari - Maret 2014 terhadap 40 anak usia 3 - 24 bulan di daerah konflik dan bukan konflik. Data dianalisis menggunakan kai kuadrat dan korelasi point biseral. Hasil pertumbuhan berdasarkan berat badan/panjang badan di daerah konflik dan bukan konflik, kurus berturut-turut 32% dan 2% (p<0,001), sedangkan perkembangan yang meragukan berturut-turut 30% dan 5% (p=0,006). Berdasarkan lingkar kepala pertumbuhan tidak normal masing-masing 17% dan 0% (p=0,006). Variabel perancu (jenis kelamin, pendidikan ibu, penghasilan) tidak memengaruhi pertumbuhan anak usia 3-24 bulan di daerah konflik (p>0,05), tetapi jenis kelamin memengaruhi perkembangan (p=0,010). Pertumbuhan dan perkembangan anak usia 3-24 bulan yang tinggal di daerah konflik lebih terganggu dibandingkan dengan yang tinggal di daerah bukan konflik. Terdapat korelasi antara tempat tinggal daerah konflik dan jenis kelamin anak dengan pertumbuhan dan perkembangan anak usia 3-24 bulan.The first five years are an important period in the development of the child. Children born and living in areas prone to disasters (natural disasters, war or armed conflict), risk of growth failure and developmental delay. This study aimed to measure the difference in the growth and development of children aged between 3 - 24 months who live in areas of conflict and not conflict and analyze correlations residential areas of conflict with the growth and development of children aged 3 - 24 months. Method of cross-sectional studies conducted in Poso regency February - March 2014 to children aged 3 - 24 months in areas of conflict and not conflict. Data were analyzed using chisquare and correlation point biseral.The results based on the growth of weight /height in conflict areas and not conflict, successive thin 32% and 2% (p<0.001), whereas the development of the doubt in a row 30% and 5% (p=0.006). Based on head circumference abnormal growth respectively 17% and 0% (p=0.006). Confounding variables (gender, maternal education, income) does not affect the growth of children aged 3 - 24 months in areas of conflict (p>0.05), but influence the development of gender (p=0.010). Conclusions growth and development of children aged 3 - 24 months who live in areas of conflict more disturbed than those living in areas not conflict. There is a correlation residential areas of conflict and gender of children with the growth and development of children 3-24 months of age.

Analysis of the Influence of Vibro-Acoustic Coupling Effect on the Floor Sound Insulation

2014 ◽  
Vol 971-973 ◽  
pp. 390-393
Author(s):  
Xiao Tian Bai ◽  
Chang Zheng Chen
Keyword(s):  
Coupling Effect ◽  
Sound Insulation ◽  
Water Pump ◽  
Residential Areas ◽  
Pump System ◽  
Acoustic Coupling ◽  
Actual Volume ◽  
The Difference ◽  
Vibration Coupling

The difference between the theoretical calculation and the actual volume of sound insulation which appears in the actual engineering of water pump system always exceed the standard of noise in the residential areas. It is difficult to meet the requirement even when the quality of the project gets improved. In this paper, ,the acoustical mode is obtained by finite element method and the distribution of noise after coming through the floor is calculated in different frequency based on the theory of sound and vibration coupling effect . The result points out that the neglect of the vibro-acoustic coupling effect is the main reason of imprecise. The solution to the problem is put forward and the direction of the noise reduction measures in the future is pointed out .

scholarly journals Effects of openings on the wind–sound environment in the traditional residential streets in a severe cold city of China

2018 ◽  
Vol 47 (5) ◽  
pp. 808-825 ◽  
Author(s):  
Yumeng Jin ◽  
Hong Jin ◽  
Jian Kang ◽  
Ziyue Yu
Keyword(s):  
Wind Velocity ◽  
Sound Pressure Level ◽  
Physical Environment ◽  
Sound Pressure ◽  
Field Measurements ◽  
Pressure Level ◽  
Optimized Design ◽  
Residential Areas ◽  
Sound Environment ◽  
The Difference

The streets in the traditional residential areas of severe cold cities in China often have openings leading to enclosed courtyards. These openings connect the street to the courtyard space, which affects the physical environment of the residential streets. This paper uses field measurements and numerical simulation to study the wind–sound environment in the street, comparing and analysing the effects of the existence, size and form of openings on the wind–sound environment in the street. The results indicate that both the average wind velocity and sound pressure level have some degree of reduction around the opening, with the difference of wind velocity reaching 1.0 m/s and the difference in sound pressure level reaching 0.5–1.6 dB. Additionally, the T30 changes from 0.2 s to 0.4 s around the opening, while the average T30 in the street also varies. Increasing the width of the opening by 1 m increases the influential range of the opening on the sound environment by 0.5–4 m. In contrast, the width of the opening has little effect on the sound pressure level and the T30. Compared with an entrance of the same width, a gap intensifies the fluctuation of the local wind velocity and causes the average T30 to reduce by 0.3 s. The results of this paper lay a data foundation for further studies on the optimized design of the physical environment in enclosed residential areas.

scholarly journals A Comprehensive Evaluation Model of Ammonia Pollution Trends in a Groundwater Source Area along a River in Residential Areas

Water ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 1924
Author(s):  
Zhuoran Wang ◽  
Xiaoguang Zhao ◽  
Tianyu Xie ◽  
Na Wen ◽  
Jing Yao
Keyword(s):  
Water Level ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Source Area ◽  
Pollution Source ◽  
Residential Areas ◽  
Ammonia Content ◽  
Comprehensive Evaluation Model ◽  
The Difference ◽  
Groundwater Source

In this study, a comprehensive evaluation model of ammonia pollution trends in a groundwater source area along a river in residential areas is proposed. It consists of coupling models and their interrelated models, including (і) MODFLOW and (іі) MT3DMS. The study area is laid in a plain along a river, where a few workshops operate and groundwater is heavily contaminated by domestic pollutants, agricultural pollutants, and cultivation pollutants. According to the hydrogeological conditions of the study area and the emissions of ammonia calculated in the First National Pollution Source Census Report in China, this study calibrates and verifies the prediction model. The difference between the observed water level and the calculated water level of the model is within the confidence interval of the test. This means that the model is reliable and that it can truly reflect changes in the groundwater flow field and can be directly used to simulate the migration of ammonia. The simulation results show that, after 20 years, the center of the ammonia pollution plume will gradually flow east along with the groundwater over time, mainly affecting the groundwater, which is less than 200 m from the river, and the ammonia content near wells at a maximum extent of less than 0.3 mg/L.

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