我国大宗商品价格走势影响因素的实证分析——以大豆为例

2004年以来,大宗商品价格波动剧烈,这对于目前仍然是资源依赖型发展模式的中国产生了极其巨大的影响。基于宏观发展前景考虑,有必要对价格走势的影响因素进行分析。以中国大豆期货价格为实证分析对象,运用多元线性回归模型,经过统计检验和计量检验分析大宗商品价格走势的影响因素。分析发现,现货进口价、CPI和美国CBOT期货价格对我国大宗商品价格有着正向影响,中国消费者信心指数对我国大宗商品价格有着负向影响。因此,我国大宗商品金融市场管理应加大大宗商品的战略储备,加强进出口监督管理;发展期货市场,利用大宗商品金融属性对抗通胀风险;放宽我国期货市场的准入条件,积极培养期货市场投资者。

Comparative Analysis of Household Consumption Pattern of Local and Imported Rice in Ekiti State, Nigeria

The paper examined the consumption pattern and attitude of households for local and imported rice in Ekiti State, Nigeria. The specific objectives of the paper are to： examine the household preference and consumption level of local and imported rice, examine price variation between local and imported rice and identify the major problems confronting marketers of local and imported rice. Data were collected from 100 randomly chosen households with the aid of structured questionnaire. Data collected were analyzed with the use of descriptive statistics such as frequency, percentages, chi-square, t-test and regression analysis. The paper revealed among others that majority of the respondents prefer to consume local rice to imported rice because of its more palatability, health benefits, readily availability and relatively cheap price. The average price per kilogramme of local rice is 200 Naira compared to that of imported rice which is 300 Naira. The difference in price is as a result of exchange rate and costs associated with smuggling of imported rice across the border of Nigeria from neighbouring countries. Nonetheless, the quality of local rice is still very low when compared to imported rice in terms of degree of impurities such as stone and shafts and the level of polishing.

New Discovery of Coral Rubbings in the North-Western Gulf of Kachchh, Gujarat, Western India-GIS Based Evaluation

The Gulf of Kachchh in western India, with its arid climate, large semi-diurnal tidal amplitudes, negative water balance and near-pristine water quality, is being extensively developed as oil importing bases for economic reasons in connection with its proximity to the oil exporting countries of the Middle East. Besides, new coral rubbings were sighted in Jakhau, north-western Gulf of Kachchh. Dredging in Mandvi of the north Gulf covering 3.5 km2 revealed a similar assortment of live corals with their associated flora and fauna. These pioneering observations demonstrate that there exist live corals of young polyps-colony of Favia sp. belonging to the family Faviidae in the north-western Gulf of Kachchh. The environmental parameters there were carefully recorded as: surface water temperature (℃) varying from 29 to 31.8, salinity (ppt), pH, dissolved oxygen (mgL-1) and total suspended solids (mgL-1) in the ranges of 37- 43.5, 7.7- 8.45, 5.4 - 6.8 and 11- 31, respectively.

Evaluation on Snow Infiltration into Heating Ventilation and Air Conditioning Intake： A Numerical Study

A HVAC （heating ventilating and air conditioning） system is generally designed to ventilate an indoor space. In windy and snowy climates dispersed snow particles in ambient air can enter the intake duct, potentially causing a serious problem. The study addresses the influence of suction volumetric flow rates, the potential discrepancy of snow intake based upon the wind direction in relation to the intake vent, and the possible difference in amounts of infiltrated snow particles in varying intake vent design and locations. The necessary characteristic quantities are defined. The simulation results show the rate of infiltration and the efficiency of the chosen intake designs. The magnitude and direction of wind influences snow infiltration significantly. The daily amount of infiltrated snow is introduced to be the characteristic measure of the infiltration in design of the HVAC systems.

To What Extent Does the Market Price of Imported Fishmeal Affect the Market Price of Pisciculture Products in Japan？ The Case of Yellowtail and Sea Bream

This study investigates the extent of the influence of imported fishmeal price changes on the market price of pisciculture products. To date, there have been only a few insufficient researches on this topic in Japan. This paper aims to reveal the causality relationship between the market price of imported fishmeal and the market price of pisciculture products using the granger causality test, and to simulate the market price of pisciculture products using impulse response functions as the price of imported fishmeal increases. The results of the granger causality test and impulse response function analyses were as follows： （1） there is a market linkage from the price of imported fishmeal to the market price of sea bream, but no causality with the market price yellowtail; and （2） this has a positive impact on the market price of sea bream when the price of imported fishmeal changes. Moreover, spillover effects were noticed in this simple scenario （at a market price of 800 yen/kg and one unit shock of 1 yen） of about 3 yen/kg.

An Empirical Study on the Relationship Between China's Maize Price and Maize Import and Export Trade

Based on the time series of China’s maize trade and domestic maize price,the article analyzes the relationship between domestic maize price and China’s maize international trade by using empirical methods.The results show that there is a connection between domestic maize prices and China's maize international trade,but the link is not very close.Domestic maize price is the cause of China’s maize international trade change,but its impact is very limited;China's maize international trade also can make some difference on the domestic maize price.Based on the results of research,the article brings three suggestion and expectation to adjust China’s maize international trade and the cost control reasonably in order to stabilize domestic maize price and maize yield,and to protect domestic grain security.

Research on Macro Quality Evaluation to Import and Export Cargoes

Based on the quality inspection data of the import and the export cargos, the general quality evaluation index and quality index are built according to the percent of defective. Macro quality of the import and the export cargoes are discussed in theory.

Analysis on China’s Petroleum Imports and Exports in 1st Half of 2005

In the first half of 2005. the import of erude oil increased 4% up of the same period, but the net import of petroleum products including crude oil, oil products, liquefied petroleum gas （LPG） and others declined 7% of the same period last year. As the oil price in international market continuously climbs up and creates new records,

On the Status quo and Development Trends of Imported Grape Wine in China

At the present stage, The imported grape wine in China have hot market, imports increased year by year, high gross mar-gins, many brands, uneven quality, low market confidence, the price value of large deviations, imperfect legislation, regulatory confusion and so on characters. The relevant departments and units should actively take a number of measures to improve the market of imported grape wine stably and healthy development. Believe in the future, its imports would continue to grow, the gross profit margin gradually would return to rational, the cost-effective products would be prevailing, the sales channels would be diversification, the enterprises in-volved would increase, and the industry competition would become increasingly fierce.

Review and Outlook of China's Oil Market in 2015

Growth rate of oil demand rose again in China in the first half of 2015. Demand for oil products went on differentiating, and the demand growth of most products sped up. Growth rate of oil production rose again, oil imports increased rapidly, and external dependence of crude oil and oil broke through 60% separately. The State adjusted the prices of gasoline and diesel timely and frequently, based on pricing mechanism. Price hike was higher than reduction. Oil market got weak, yet more stable. China increased the pace of reforms in marketization. In the second half, oil demand will increase continuously but with lower growth rate, oil production will rise more slowly, imports of crude oil and oil will keep on rising rapidly, gasoline and kerosene as well as diesel will witness a net import, and the market of gasoline, kerosene and diesel will be more stable.

山西卓锋钛业3D打印用球形海绵钛粉研制成功

山西卓锋钛业有限公司把握商机,瞄准钛产业高端市场,经历两年多的研发试验,成功研制出3D打印球形海绵钛粉,填补了我国钛工业高端钛粉产业和技术的空白,打破了西方发达国家对这一项目的垄断。