Energy Consumption Predication in China Based on the Modified Fractional Grey Prediction Model

China’s increasing energy consumption poses challenges to economy and environment. How to predict the energy consumption accurately and regulate the future energy consumption production is a problem worth studying. In this paper, the fractional order cumulative linear time-varying parameter discrete grey prediction model (FTDGM (1, 1) model) is introduced. Firstly, the data are preprocessed by buffer operators, and then, the FTDGM (1, 1) model is established. In this paper, the parameter estimation method and the specific process of model establishment are presented. Finally, the models of energy consumption in China are built. The advantages and prediction accuracy of the model established in this paper are analyzed, and the data in the following years are effectively predicted, so as to provide theoretical support for the government to formulate reasonable energy policies.

Overheating in Schools: Factors Determining Children’s Perceptions of Overall Comfort Indoors

Climate change is raising the length and intensity of the warm season in the academic year, with a very significant impact on indoor classroom conditions. Increasingly frequent episodes of extreme heat are having an adverse effect on school activities, whose duration may have to be shortened or pace slackened. Fitting facilities with air conditioning does not always solve the problem and may even contribute to discomfort or worsen health conditions, often as a result of insufficient ventilation. Users have traditionally adopted measures to adapt to these situations, particularly in warm climates where mechanical refrigeration is absent or unavailable. Implementation of such measures or of natural ventilation is not always possible or their efficacy is limited in school environments, however. Such constraints, especially in a context where reasonable energy use and operating costs are a primary concern, inform the need to identify the factors that contribute to users’ perceptions of comfort. This study deploys a post-occupancy strategy combined with participatory action to empower occupants as agents actively engaging in their own comfort. It addresses user-identified classroom comfort parameters potentially applicable in the design and layout of thermally suitable spaces meriting occupant acceptance.

Spherically symmetric gravitational collapse in Einstein Gauss–Bonnet theory

This paper deals with spherically symmetric gravitational collapse of inhomogeneous perfect fluid in Einstein Gauss–Bonnet gravity. The physical quantities have been plotted in the EGB gravity. The Ricci Scalar and Kretschmann scalar have been determined to study the curvature singularity. The shell focusing curvature singularities are generated at last stage of gravitational collapse of object. The formation of singularity and apparent horizon depends on the initial data. Also, the energy conditions have been discussed for the reasonable energy momentum tensor. The presence of GB coupling constant [Formula: see text] modifies the structure of singularity and formation of apparent horizon.

Study on Reasonable Energy Supplement Time of Tight Sandstone Oil Reservoirs with Rock Compressibility Stress Sensitivity

A-HBR field is a tight sandstone oil reservoir with a threshold pressure gradient and a rock compressibility stress sensitivity. However, no existing approach could predict reasonable energy supplement time considering both of them. Therefore, in this paper, rock compressibility stress sensitivity experiments are conducted. Then, a new approach is presented. This approach considers the correlation of rock compressibility and formation pressure. And the formation pressure is different from the development time and distance to oil well. The study suggests that the energy supplement time is later when the original rock compressibility is larger. The energy supplement time is earlier when the rock compressibility is more severe. A-HBR field’s reasonable energy supplement time is 83 days when considering the effect of rock compressibility stress sensitivity. It is much earlier than that when not considering the effect of rock compressibility stress sensitivity.

PO-244 The Differences of 18~60 Years Old Adults’ Basal Metabolism depend on Their BMI in Nanjing

Objective By comparing the differences of adults’ basic metabolic values depend on their BMI, we try to make clear the relationship between different somatotype and human daily total energy expenditure(EE) because basic metabolism accounts for the 60~70% of the EE. Then we can provide a reference including reasonable energy intake and suitable physical activity load for adults of different somatotype. Methods A self-made health questionnaire was used to select these who are aged of 18~60 years old with no bad hobby and no bad habits (women were not in the period of menstruation), we totally recruited 181 volunteers of which 81 were normal somatotype(18.5≤BMI＜24, 33 Male 39.76±12.23 years old, BMI21.90±1.40 vs Female 39.69±13.05 years old, BMI21.38±1.40) and 72 were overweight somatotype (24≤BMI＜28, 49 Male 40±13.38 years old, BMI25.26±1.15 vs Female 40.61±10.72 years old, BMI25.53±1.09) and 28 were obese somatotype (28≤BMI, 18 Male 39.33±14.23 years old, BMI30.14±2.22 vs female 41±12.10 years old, BMI29.36± 1.25), and the basic metabolic value was measured by respiratory chamber. Results The basal metabolic values of male and female aged of 18~60 years old in Nanjing were 2077.10±262.12Kcal and 1682.87±203.69Kcal respectively. The basic metabolic values of male and female with normal BMI are 2046.41±242.73Kcal and 1628.65±184.28kcal respectively. The basic metabolic values of male and female with overweight BMI are 2061.10±232.90Kcal and 1741.10±220.14Kcal respectively. The basal metabolic values of male and female with obese BMI are 2176.92±350.64Kcal and 1809.20±175.82Kcal. The basic metabolic values of adults with different sex but in the same BMI all reached a statistically significant difference (P≤0.01). To those adults with same sex but in different BMI, the basic metabolic values between normal BMI and overweight BMI or obese BMI all reached a statistically significant difference for female (P≤0.05), but there were no statistically significant difference for male (P > 0.05). Conclusions For 18~60 years old adults, it is important to actively control their weight if they find their BMI are overweight, especially for women, because women are significantly more easy to return to normal BMI compare with men, but the advantages depend on different sex will disappeared if they keep on develop into obese BMI.

Researched on the Character of Performance Test for a Type of Energy Absorbing Assembly and Mathematic Analysis Model

It is the key point for the design and analysis of the energy absorbing assemblies in the whole R&D process of pipe whip restraint. An adequate and reasonable energy absorbing assembly design could guarantee the restraint function and control the reaction loads on the structure. Consequently, the performance character curve for the energy absorbing assembly is necessary and important. In this paper, researches are made to obtain the test and analysis method for the energy absorbing assembly. And the method is used to modify the design and release the load on structure to the extent of possible.