Efficiency Analysis of Foundation System

The increasing number of residents in South Tangerang has an impact on increasing the need for lower housing. The development of vertical housing with the market name of flats, apartments and is the most effective anticipatory solution to overcome land prices which result in market limitations, especially for the upper middle class. This 32-storey apartment project uses a combined foundation system between drill pile foundation & raft foundation. With the combination of these two very massive systems, of course, it will have a very expensive cost to implement and take a long time to complete. In order to avoid cost overruns, the foundation design must look at the possibilities. To determine the efficiency of the combined system foundation design between pile bored foundation & raft foundation, the researchers analyzed the value of the bearing capacity and also the settlement that occurred in the existing foundation using the Poulos method, the equivalent Raft method and the Vesic method. From the results of the study, it was found that the contribution of the pile foundation bearing capacity was 24.10%. the placement of the raft foundation is 75.90% and the settlement analysis using the Poulos 8.95cm method, the 12.41cm Equivalent Raft method and the Vesic 12.1cm method, these three results are close to the maximum settlement limit.

Determinanty zróżnicowania regionalnego cen gruntów rolnych w Polsce

The aim of the research presented in this article was an attempt to explain the regional differentiation of arable land prices in 2018 in terms of natural and economic conditions, resulting both from factors characterizing the size, structure and quality of land, as well as the level of economic development and agricultural potential of individual voivodeships. The research used qualitative and quantitative analysis of Polish Statistical Office data. The results of the analysis carried out confirmed the regional differentiation of natural and economic conditions as well as the level of prices and rents on the agricultural land market in Poland. The variables explaining the differentiation in land prices include indicators characterizing the quality of the agricultural land resource, its profitability and the agricultural potential of a given region.

Enviromental factors as the elements determing the development of floating homes

The popularity of Floating Homes in Western Europe and North America is noticeable. The interest in these facilities in Poland is also constantly growing. The popularity of Floating Homes is due to climate change, rising land prices and population density in city centers. However, environmental factors play a significant role in their development. The publication presents the results of research on the impact of environmental factors on the development of Floating Homes in Poland. As part of the research, the most important environmental factors were identified and then, using the State of the Surroundings Scenarios (SSS) method, an initial scenario of their development was developed. The most probable scenario was developed, the purpose of which was to identify the most favorable factors - strengths and unfavorable factors - weaknesses responsible for the development opportunities of Floating Homes in Poland. Additionally, a surprise scenario was prepared, which indicated factors that may unexpectedly accelerate the development of Floating Homes in Poland or slow it down.

Does Immigration Depreciate Residential Land Prices? Case of Tokyo

This study investigates the effects of immigration on residential land prices in urban Tokyo. A rapid increase in immigrants in Tokyo raises the concern that immigration may depreciate land prices because of the negative image emerging from the perception that some immigrants might create disharmony in society. However, our analysis denies this possibility; for every 1% increase in immigrant ratio (i.e., the proportion of immigrants in the total population), the residential land prices increase by 12%. Although the literature explains that a negative immigration effect occurs when the analysis uses small geographic units, the results suggest that even a positive effect can occur under small geographic units. The implications of the current results are complicated. While the concern of immigration-induced land price depreciation is unfounded, this raises another concern—that of asset inequality between land owners and tenants.

The determinants of forest land prices

The authors discuss the peculiarities of price formation for forest land as a renewable plant natural resource. Forest plots are regarded as a forest resource that can be used in two ways: as a natural object and as a source of wood raw materials. The absolute forest rent for forest areas with standing trees, adjusted for economic, environmental, and social factors, serves as the pricing basis. The authors propose creating differentiated regional price lists for forest plots and methodological approaches to pricing forest plots with different types of forest use to substantiate the forest tax and tax base.

UPAYA PENANGGULANGAN ALIH FUNGSI LAHAN PERTANIAN DENGAN PEMBERDAYAAN KRAMA SUBAK

Subak is a traditional organization in the field of agriculture and irrigation of rice fields in indigenous peoples in Bali that is socioeconomic, religious, economical that historically continues to grow and develop and has been awarded World Cultural Heritage status by UNESCO on June 29, 2012. However, along with the development of the times, the conversion of agricultural land functions are increasing which results in agricultural land continues to decrease and the existence of Subak is increasingly threatened. This research uses the foundation of Empowerment Theory according to Totok Mardikanto. The research method used is qualitative research with descriptive method. Data collection techniques used in this study are by observation, interview, and documentation. While data analysis used in processing the data obtained is by data reduction, data display, and conclusion drawing. The observations showed that the empowerment process for Krama Subak has been running well but there are still obstacles that cause conversion of agricultural land function to continue to occur, such as the resources of heterogeneous farmers, farmers not owners of agricultural land, and farmers who are still tempted by rising land prices. Efforts made in addressing this is by holding the Hita Lalu Program, improving the intensification of subak administrators as well as the preparation of the Regulation on Sustainable Food Agricultural Land (LP2B). Keywords: Empowerment, Agriculture, Krama Subak

Machine-Learning-Based Prediction of Land Prices in Seoul, South Korea

The accurate estimation of real estate value helps the development of real estate policies that can respond to the complexities and instability of the real estate market. Previously, statistical methods were used to estimate real estate value, but machine learning methods have gained popularity because their predictions are more accurate. In contrast to existing studies that use various machine learning methods to estimate the transactions or list prices of real estate properties without separating the building and land prices, this study estimates land price using a large amount of land-use information obtained from various land- and building-related datasets. The random forest and XGBoost methods were used to estimate 52,900 land prices in Seoul, South Korea, from January 2017 to December 2020. The models were also separately trained for different land uses and different time periods. Overall, the results revealed that XGBoost yields a higher prediction accuracy. Whereas the XGBoost models were more accurate on the 2020 data than on the 2017–2020 data when analyzing residential areas, the random forest models were more accurate on the 2017–2020 data than on the 2020 data. Further analysis will extend the prediction model to consider submarkets determined by price volatility and locality.

THỰC TRẠNG XÁC ĐỊNH GIÁ ĐẤT CỤ THỂ ĐỂ BỒI THƯỜNG KHI NHÀ NƯỚC THU HỒI ĐẤT TẠI MỘT SỐ DỰ ÁN Ở THÀNH PHỐ VŨNG TÀU, TỈNH BÀ RỊA – VŨNG TÀU

Nghiên cứu này được thực hiện nhằm đánh giá thực trạng xác định giá đất cụ thể để bồi thường khi Nhà nước thu hồi đất tại Dự án xây dựng tuyến đường vào và cơ sở doanh trại Chi đội Kiểm ngư số 2 và Dự án đường Thống Nhất nối dài ở thành phố Vũng Tàu, tỉnh Bà Rịa – Vũng Tàu. Nghiên cứu đã phỏng vấn 116 hộ dân bị thu hồi đất, phân tích các số liệu thứ cấp và sử dụng thang đo Likert để đánh giá mức độ hài lòng của người dân bị thu hồi đất đối với giá đất cụ thể được xác định. Kết quả nghiên cứu cho thấy việc xác định giá đất cụ thể để tính tiền bồi thường được thực hiện theo đúng trình tự quy định nhưng có thời gian thực hiện sớm hơn từ 7 - 12 ngày so với quy định. Giá đất cụ thể được xác định cao hơn so với giá đất trong bảng giá đất của UBND tỉnh Bà Rịa - Vũng Tàu ban hành nhưng thấp hơn so với giá đất thị trường. Người dân bị thu hồi đất đều đã hài lòng với giá đất cụ thể được xác định để tính tiền bồi thường của hai dự án. ABSTRACT This research was conducted to assess the situation of determining specific land prices for compensation when land acquisition of two projects in Vung Tau city, Ba Ria - Vung Tau province, including: the project of building the entrance route and barracks of the 2nd Fisheries Division and Thong Nhat road extends project. This study interviewed 116 households whose land was acquired, analyzed secondary data, and used the Likert scale to assess the satisfaction level of the people whose land was acquired for the specified land price. Research results showed that the determination of specific land prices was done in accordance with the regulations, but the implementation time was 7-12 days earlier than the prescribed time. The specific determined the land prices was higher than those issued by the People's Committee of Ba Ria - Vung Tau province, but lower than the market land price. The households whose land acquisition were satisfied with the specific land price determined for compensation calculation of both projects.

Socioeconomic Challenges of California Strawberry Production and Disease Resistant Cultivars

Strawberries are the 4th highest grossing crop in California and supply 90% of US strawberries. But the industry's long reliance on the use of chemical fumigants to control soil disease, nematodes and weeds is being threatened by increased regulation of these fumigants, leading to urgent efforts to develop and test non-chemical alternatives to fumigation, such as disease resistant cultivars. Many of these technologies are promising ecologically, but making them economically viable for growers is more challenging, especially in light of the socioeconomic context of strawberry production in California that has created a state of lock-in for a sustainability transition. This paper discusses how the challenges of land prices, labor shortages, marketing standards, and low prices bear on cultivar selection. Based on qualitative interviews, we corroborate that strawberry growers operate under significant socioeconomic constraints in California, many of which are beyond their control. In addition, we find that most growers see high-yielding varieties as crucial to their economic viability with regard to land, labor, and marketing intermediaries and yet recognize that the focus on individual farm productivity works at cross purposes to the problem of poor prices. Disease resistant varieties do not at face value address the concerns voiced by most growers. Our findings suggest, however, that if some of the other pressures were exogenously mitigated, growers might be more inclined to experiment with and adopt disease resistant varieties, in combination with other approaches. The most promising policy avenues seem to therefore lie with support of grower revenues.

Explorative Study of Aquaponics Systems in Indonesia

Aquaponics is the combined cultivation of fish in aquaculture systems and plants in hydroponic systems. This study aimed to explore and evaluate new aquaponics system designs in Jakarta, Indonesia, in terms of water and nutrient efficiency, and/or profitability. In total, one brackish water system with barramundi and tomato (BW) and three freshwater systems with Nile tilapia, rice, and duckweed (FW + DW), Nile tilapia and rice (FW − DW), and Nile tilapia and tomato (FW-tomato) were investigated using dynamic mathematical models. The results showed an increase of N, P, and water use efficiency by 10%, 18%, and 31%, respectively, in FW-tomato compare to FW − DW. Meanwhile, FW + DW only slightly increased the efficiency but worsened the already negative net present value (NPV) of FW − DW due to the high land prices. The BW system had similar water and nutrient efficiency to FW-tomato, but lower NPV. Profit of the BW and FW-tomato becomes comparable if the hydroponic area in the BW system can be expanded by 35%, or the selling price of tomato or fish in the BW can be increased by 20%. Given the expected growth of both the production of tomatoes and aquaculture in Indonesia, there is potential for further introduction of aquaponics systems in Indonesia.