A performance model of speculative prefetching in distributed information systems

Previous studies in speculative prefetching focus on building and evaluating access models for the purpose of access prediction. This paper investigates a complementary area which has been largely ignored, that of performance modelling. We use improvement in access time as the performance metric, for which we derive a formula in terms of resource parameters (time available and time required for prefetching) and speculative parameters (probabilities for next access). The performance maximization problem is expressed as a stretch knapsack problem. We develop an algorithm to maximize the improvement in access time by solving the stretch knapsack problem, using theoretically proven apparatus to reduce the search space. Integration between speculative prefetching and caching is also investigated, albeit under the assumption of equal item sizes

Penghitungan Biomassa dan Karbon di Atas Permukaan Tanah di Hutan Larangan Adat Rumbio Kab Kampar

Forests are natural resources that can absorb carbon dioxide (CO2) in the process of photosynthesis, and convert it into carbohydrates and store them into biomass. Prohibition of indigenous Rumbio forest areas is one area of forests managed by communities' customary law, which is the existence of indigenous forest to gain recognition by the State which has the right to control all resources. In order, it needs to know how big the potential of carbon. The study aims to determine the potential of biomass and carbon on the ground in Indigenous of Rumbio Forest. Mechanical determination of the plot and data is done by Stratified Random Sampling, which is the method of taking the sample based on strata (levels). The potential of biomass on the ground biomass is done by summing the litter, nursery, lowers plants, saplings, poles and trees that use formula algometric. Biomass litter and plant seedlings under estimated by using the Indonesian National Standard. Carbon stored value is 0.47 of biomass. The results showed that the carbon potential in the area ofIndigenous of Forests Rumbio forest is 31922.21 ton / ha

Analyzing the impact of population size, regional minimum wage, and economic growth on unemployment

The problem of unemployment is indeed very complex to discuss, because it can be related to several economic indicators that have a relationship with the open unemployment rate. The role of the government is needed to overcome the problem of unemployment in the region. Uncontrolled population numbers can result in not achieving economic development goals. The success of economic development can be seen from economic growth and the smaller inequality in an area, with the increasing economic development of a region, it is expected to be able to reduce the existing unemployment rate where welfare will be achieved properly. This study has a purpose: to analyze the effect of population, regional minimum wages, and economic growth on the open unemployment rate in Central Kalimantan. This study uses secondary data which is time series data from 2013-2019. Analysis of the data used is panel data with the help of the eviews program. The result of this study is that the variables of population, regional minimum wage, and economic growth have a positive effect on the open unemployment rate in Central Kalimantan. When the population increases and when real wages increase, companies will reduce the demand for labor, while the supply of labor is higher than the demand for labor, then this causes the unemployment rate to increas

Leading sector analysis for strengthening local own-source revenue: Evidence from Pulang Pisau Indonesia

Regional economic development requires accurate identification of strategic sectors that contribute significantly to local revenue. In the context of Indonesia's fiscal decentralization, regional governments are increasingly expected to optimize their economic potential to enhance Regional Own Revenue (PAD). This study aims to identify the leading economic sectors in Pulang Pisau Regency, Central Kalimantan, and examine their influence on PAD from 2010 to 2024. The research adopts a quantitative approach using secondary data sourced from the Central Bureau of Statistics. Four analytical methods are employed to determine leading sectors: Location Quotient (LQ), Shift-Share analysis, Klassen Typology, and Overlay analysis. After identifying leading sectors, multiple linear regression is used to assess their impact on PAD. The results show that two sectors—Agriculture, Forestry, and Fisheries; and Construction—are consistently classified as leading sectors based on their high specialization, competitiveness, and structural contribution. Regression analysis reveals that the Agriculture, Forestry, and Fisheries sector has a significant positive effect on PAD, confirming its strategic role in fiscal development. Conversely, the Construction sector shows a negative and significant effect, suggesting limited fiscal retention and low tax linkage within the local economy. These findings highlight the importance of aligning economic development policies with sector-specific fiscal strategies. The study recommends that regional governments prioritize agricultural sector development through infrastructure, value chain integration, and tax system reform. In contrast, regulatory adjustments are needed in the construction sector to enhance its contribution to local revenue, such as through local content requirements and contractor tax enforcement. Future research should incorporate qualitative dimensions and governance factors to deepen the understanding of PAD performance in decentralized region

The Effect Of Investment, Economic Growth, Inflation, Drinking Wages And HDI On Open Unemployment In The Kalimantan Regional

This study aims to provide an empirical explanation of the effect of Investment, Economic Growth, Inflation, Minimum Wage and HDI on Open Unemployment in Kalimantan Region. The research method used is panel data regression analysis method using Fixed Effect Model (FEM). The type of data used is secondary data. Secondary data obtained from the Central Statistics Agency (BPS) Kalimantan Region. The data that has been collected is then analyzed with panel data regression using the Fixed Effect Model where this model uses the Chow Test and Hausman Test to see the Effect of Investment, Economic Growth, Inflation, Minimum Wage and HDI on Open Unemployment in Kalimantan Region using Stata 16.0 software. The results of the analysis in this study indicate that Investment, Economic Growth, Inflation, Minimum Wage and HDI have a significant effect on Open Unemployment in Kalimanta

Analysis of the Active and Passive Fire Protection Systems in the Government Building, Depok City, Indonesia

In many countries, fires in buildings have resulted in loss of many lives, damaged properties and financial losses. In Indonesia, there has been increasing reported cases of fire occurring in public buildings over the years. This study aimed to assess the risks of fire and fire protection systems in government office buildings in Depok, Indonesia. A descriptive study was conducted using triangulation approaches on government buildings in Depok from March to April 2016. Primary and secondary data was collected using observation, unstructured interview of key informants and documentation review. Descriptive and comparative data analyses were conducted in the study. The key problems identified in the fire protections systems in the building were heat detector installed near the air conditioner, damaged to the alarm circuits, sprinklers mounted at a distance exceeding the applicable regulations, lack of complete hydrants, and a lack of fireproof doors and windows. The gap between standard/regulation and the condition of fire protection systems in the building are based on a lack of knowledge about the essence of the building management system and standard fire protection. There are minimal active and passive fire protection systems in office buildings, and few components are not adequately practiced in accordance with international and local standards and regulations. For safe systemof work, the entire fire protection system need to be tested periodically so that the system would work well in case of an emergency. It is important to conduct regular inspections and maintenance of the fire protection systems specifically in office buildings. Keywords: active fire protection system, fire, National Fire Protection Association, passive fire protection syste

MENINGKATKAN KREATIVITAS BELAJAR BIOLOGI SISWA MELALUI PENERAPAN METODE QUANTUM TEACHING DI MADRASAH ALIYAH NAHDATUL ULAMA BATANG TORU

This research was carried outMadrasah Aliyah Nahdatul Ulama Batang Toru years lessons 2015-2016.This type of research is Research Action class (Classroom Action Research) using two cycles of learning. Each cycle starting from the planning, implementation, observation, and reflection. Data collecting techniques used is the test of creativity and observation. Data collection tools used is sheet tests the creativity and student activity observation sheet. Based on the results of the research action class that do obtain test results of creativity learning of biology students ranging from cycle to cycle I II was 1872 with an average of 72.0 with thepercentage of completeness (61.5%) and cycle II 2191 with an average completeness percentage with 84.27 (84.62%). Based on the analysis of data obtained the value of the observation activities of students in cycle I of 66.92% and cycle II of 82.30% observation rating and performance teacher at 67.25% of cycle I and cycle II of 92.9%. In cycle II, has experienced an increase of cycle I and already meets the criteria of research indicators of achievement, then this study finalized on cycle II.Keywords:Creativity, Quantum Teaching method, structure and function of plant tissue.

HUBUNGAN KELIMPAHAN SPESIES LARVA IKAN DENGAN PARAMETER KUALITAS PERAIRAN DI DANAU RANAU, SUMATERA SELATAN

This research conducted due to lack of information about fish larvae in Ranau Lake, South Sumatera. This information is quite essential to explore because this can be used as a scientific basis for policy formation in this area. The objectives of this research are to analyze the correlation between fish larvae abundance to physicochemical parameters in Ranau Lake waters. Sampling was carried out at six stations (Muara Silabung, Dermaga, Way Maisin, Pemandian Air Panas, Lumbok, and Talang Teluk). Physico-chemical parameters measured directly in the field are temperature, pH, depth, brightness, CO2, O2, hardness, electrical conductivity, total alkalinity, and turbidity; while the chemical parameters measured in the laboratory are COD, NO2, NO3, NH3, and PO4. Larvae species identified through DNA sequence. Principal Component Analysis (PCA) was used to measure the relationship between fish larvae abundance to the water parameters. Results show that generally there were forty-two fish larvae from nine species. The dominant species was Oreochromis niloticus. The results of the Principal Component Analysis show that the highest abundance of fish larvae was in water with the highest level of turbidity and dissolved oxygen, whereas the lowest abundance was in water with the highest level nitrate and depth.   Belum ada informasi tentang kelimpahan larva ikan diperairan Danau Ranau Sumatera Selatan melatarbelakangi penelitian ini. Informasi ini sangat penting untuk diketahui karena dapat dijadikan acuan dalam pengelolaan perikanan di wilayah ini. Penelitian bertujuan untuk menganalisis hubungan kelimpahan larva ikan dengan parameter fisika-kimia di perairan Danau Ranau. Pengambilan sampel dilakukan di enam stasiun (Muara Silabung, Dermaga, Way Maissin, Pemandian Air Panas, Lumbok dan Talang Teluk). Parameter fisika-kimia perairan yang diukur langsung di lapangan adalah suhu, pH, kedalaman, kecerahan, CO2, O2, kesadahan, daya hantar listrik, total alkalinitas, dan turbiditas; sedangkan parameter kimia yang diukur di laboratorim adalah COD, NO2, NO3, NH3, dan PO4. Spesies larva ikan diidentifikasi dengan sekuen DNA. Analisis Komponen Utama dilakukan untuk mengetahui hubungan antara kelimpahan larva ikan dengan parameter fisika-kimia perairan. Hasil penelitian menunjukkan secara keseluruhan ada 42 larva ikan yang berasal dari 9 spesies. Spesies yang paling dominan adalah Oreochromis niloticus. Hasil Analisis Komponen Utama menunjukkan bahwa kelimpahan larva ikan tertinggi (102,9 individu/100m3) berada pada stasiun pengamatan yang memiliki turbiditas dan oksigen terlarut tertinggi, sedangkan kelimpahan larva ikan terendah (10,83 individu/100m3) berada pada stasiun pengamatan yang memiliki kadar nitrat dan kedalaman tertinggi

Avatar design types and user engagement in digital educational games during evaluation phase

Avatar design types can range from human representations to abstract representations. In digital educational games (DEGs), avatars are frequently used to encourage users to play the game. However, the role of avatar design types and their engagement in digital games are still unclear and empirically under research. Therefore, a bespoke digital educational game in geography was developed and validated by six expert users. Then forty-five users participated in the evaluation phase to investigate engagement and avatar types on digital educational games using the user engagement scale (UES). The results reported aesthetics and satisfaction factors somehow influenced the avatar design types, but none of the UES subscales was influenced by preferred avatar design types. Moreover, the human-cartoon avatar, which was not entirely human and cartoonish, was the most popular avatar design type among young adults. Other issues discussed for future developers and research included incorporating more avatar design selections into the study, integrating social interaction features into the game, using the same drawing style for avatars and provide easy access to the bespoke game during data collection