Perencanaan Investasi Pembangunan Perumahan Seluas 7990 m2 di Desa Jantiharjo Kecamatan Karanganyar Kabupaten Karanganyar

All the humans on earth need a place to live, which is why the house becomes the main human need. Therefore, housing is one of the keys to meet the needs of the community will be a place to live. Karanganyar Regency is one of the strategically located cities. This study aims to find out how much the demand for housing, how much the total housing investment plan in Jantiharjo Village, Karanganyar Subdistrict, Karanganyar Regency and the proper investment planning of housing development is seen from the aspect of financial aspect and economic aspect. From result of economic analysis used got result of value of NPV equal to Rp 689.461.138,39., IRR value equal to 12,1687%> 12%, value of BCR equal to 1,04> 1, IP value 1,04> 1, PP value for 21 month 18 day with Annual cash flows fixed amount sdangkan PP value with annual cash flow amounts not fixed for 27 months 28 days, the value of ROI before tax of 4.69% per month = 56,26% per year while the value of after-tax ROI 4.17% per month = 50.00%, BEP value will be achieved when the sale of home units sold as many as 35 units. Thus it can be concluded that investment of housing development in Jantiharjo Village, Karanganyar Sub-district, Karanganyar Regency can be accepted and executed. Keywords: Economic Analysis, Investment, Housing

Perceived psychological reactions to second wave of pandemic COVID-19 Among Working Adult Indonesians: An online survey study

Background: The Corona Virus Disease (Covid-19) pandemic caused serious health consequences including mental health issues. Thus, gaining insight into the emergence of mental health problems including fear, anxiety and stress in society during the second wave Covid-19 pandemic is imperative.  Objectives: This study aimed to identify the psychological reactions of working Indonesians living in five metropolitan cities in Java Island and its association with personal characteristics during the second wave Covid-19 pandemic.Methods: This cross-sectional study included a total of 916 respondents from five metropolitan cities in the Island of Java that was voluntarily completing the anonymous online survey. The data were administered by using the Indonesian version of Perceived Stress Scale (PSS), Covid-19 Anxiety Scale (CAS), and Fear of Covid-19 Scale (FCS). Bivariate and multivariate analysis were performed using non-parametric methods due to non-normal distribution data. Significance for hypothesis testing was set with p-value 0.05 on 95% Confidence Interval. Data was analyzed using software STATA14 of StataCorp.Results: A total of 916 respondents were included, with the median of age being 28 years old. Perceived fear and anxiety to Covid-19 among working individuals was low (35.92% and 40.94%), yet they were on moderate and high-levels of stress (31.88% and 45.52%) respectively. After adjusted all predictors, age was a significant predictor to the level of fear (p< 0.001), anxiety (p= 0.05), and stress (p< 0.001). The first dose of vaccination significantly predicted a reduction in the fear of Covid-19 (p= 0.045).Conclusions: Increasing a year of age predicted the reduction of fear, anxiety, and perceived of stress to Covid-19. First dose vaccination significantly reduced the fear to Covid-19.

Perceived psychological reactions to second wave of pandemic COVID-19 Among Working Adult Indonesians: An online survey study

Background: The Corona Virus Disease (Covid-19) pandemic caused serious health consequences including mental health issues. Thus, gaining insight into the emergence of mental health problems including fear, anxiety and stress in society during the second wave Covid-19 pandemic is imperative.  Objectives: This study aimed to identify the psychological reactions of working Indonesians living in five metropolitan cities in Java Island and its association with personal characteristics during the second wave Covid-19 pandemic.Methods: This cross-sectional study included a total of 916 respondents from five metropolitan cities in the Island of Java that was voluntarily completing the anonymous online survey. The data were administered by using the Indonesian version of Perceived Stress Scale (PSS), Covid-19 Anxiety Scale (CAS), and Fear of Covid-19 Scale (FCS). Bivariate and multivariate analysis were performed using non-parametric methods due to non-normal distribution data. Significance for hypothesis testing was set with p-value 0.05 on 95% Confidence Interval. Data was analyzed using software STATA14 of StataCorp.Results: A total of 916 respondents were included, with the median of age being 28 years old. Perceived fear and anxiety to Covid-19 among working individuals was low (35.92% and 40.94%), yet they were on moderate and high-levels of stress (31.88% and 45.52%) respectively. After adjusted all predictors, age was a significant predictor to the level of fear (p&lt; 0.001), anxiety (p= 0.05), and stress (p&lt; 0.001). The first dose of vaccination significantly predicted a reduction in the fear of Covid-19 (p= 0.045).Conclusions: Increasing a year of age predicted the reduction of fear, anxiety, and perceived of stress to Covid-19. First dose vaccination significantly reduced the fear to Covid-19. </p

Polymer carbon dots from plastics waste upcycling

We present the upcycling of plastic waste into photoluminescence polymer carbon dots (C-Dots). The recycling was conducted to the polypropylene (PP) plastic waste using a simple heating process at around its melting point temperatures of 200 °C, 250 °C, and 300 °C. The optical properties and size as well as structure of polymer C-Dots from PP plastic waste are successfully identified. The newly polymer C-Dots from plastic waste recycling have absorption spectra at the 400–435 nm wavelength range. We obtained a very unique rare phenomenon on the emission spectra that it happened two peaks emission wavelengths of 410 nm (3.03 eV) and 440 (2.83 eV). Polymer C-Dots from PP plastic waste has an average particles size of ∼15 nm (200 °C), ∼11 nm (250 °C) and ∼8 nm (300 °C). The alteration of the optical properties—absorption spectra and emission spectra—as well as particle size of polymer C-Dots are caused by structural change of PP plastic waste due to heating process in recycling process. During the heating process on PP plastic waste, the carbon chain binds oxygen from the environment and forms C=O carbonyl group on the wave number 1638 cm-1 which is the main constituent of Polymer C-Dots. Recycling of PP plastic waste into polymer C-Dots has a huge potential to be used as materials for photocatalyst, bioimaging as well as sensors in optoelectronic materials. Furthermore, the result of this study has a role as real action in term of environmental conservation and it answers how to overcoming the problem of plastic waste

The process of making batik wayang beber using digital canting with sungging painting coloring technique

This article carries the application of creating wayang beber patterns with sinjang batik techniques. This research aims to answer the endless question regarding the variation of batik patterns. Batik patterns are not only used in clothing but also as decoration. In this case, batik is used as decoration with wayang beber patterns using batik painting techniques.  The research was carried out by making an example of a model, starting with looking for possible utilization by using a design from a computer graphics program. The research scope is limited by the creation of the wayang beber patterns and their application. The steps of designing are to create a prototype model, starting with conducting emic and ethical research. The next step is contemplating the whole pattern development design using digital technology. This is done by looking for suitability based on aesthetic principles and followed by pencantingan using the SGL-4332 series digital batik canting machine.  For the final step, colouring is carried out using the batik painting technique, which is done manually using the rules of sungging gradation.  This research produced a prototype model of wayang beber creation with batik techniques, which can be used by batik craftsmen to bring out new innovations in their wor

Video-Assisted Experiment to Observe Interaction Force during the Interaction of Two Objects

The momentum is often used to analyse the dynamics of the motion of an experimental interaction between objects. Meanwhile, the interaction force tends to be challenging to observe and obtain. In this study, a simple video-assisted experiment was used to observe the interaction forces during the interaction of two magnetic objects. The interaction force between magnetic dipoles was obtained for each object position during the interaction experiment. The maximum force interaction was obtained when the two objects were at the minimum distance. The velocity of the object significantly influences the minimum distance between two objects during the interaction. In addition, we found that the law of linear momentum conservation holds for this interaction. Furthermore, the total kinetic energy before and after the interaction is identical, indicating an elastic interaction. This study is hopefully beneficial for students to reduce the limitations in understanding the interaction forces between objects