On Joseph-Kindness to his Brothers

In this paper,Joseph,kind to his brothers whom had once nearly killed him before will be discussed.Years of terrible suffering when Joseph has been sold to Egypt as a slave,from the bottom towards the top,he finally became the prime minister to help the Egyptian pharaohs with seven years of abundant and famine.When his brothers came to Egypt to buy coin to get alive,as a prime minister,Joseph did not use his power to punish them but forgive all after identifying their repentance.Forgiving all and asking his brothers to reunite the whole family and relatives,Joseph also settles his father and brothers in the best of the land,dwell in the land of Goshen admitted by Egyp tian pharaohs.Conclusion:Every one of us shall be as kind as Joseph,forget the evil things treated to us before,and forgive the persons,who betrayed or framed before:a disposition to be lenient in pardoning others.     

V_2O_5-CaCo_3-Nb_2O_5掺杂对低损耗功率Mn-Zn铁氧体的影响(英文)

1IntroductionApplication of Mn-Zn ferrites in power electronics isconstantly expanding. Demands on small and efficientswitching power supplies are rising to meet therequirement of compact and power saving electronicequipment . In a switching power supply, the trans-former takes up a large portion of cubage and powerloss .It is thereforei mportant to reduce the power lossof Mn-Zn ferrites used as the transformer core .Core loss is known to be dividable into three com-ponents :hysteresis loss …     

A new type of Wilkinson dual-frequency power divider with symmetrical transmission line stubs

To realize equal power splitting at two arbitrary gigahertz-frequencies, this paper presents a new type of Wilkinson dual frequency power divider, consisting of three-section transmission lines and a series RLC （resistor, inductor and capacitor） circuit. By equating the [ABCD] matrix of the proposed circuit to that of the quarter-wave impedance transformer, coupled with even/odd mode analyses, the design equations of the proposed network are derived. For verification, two dual-frequency power dividers with dual-band operating frequencies at 0.6 GHz and 3.0 GHz, and 3.8 GHz and 10 GHz respectively are designed and simulated. Simulation results show that the dual-band ratio of the proposed power divider can be as large as 5. Comparisons of the simulation results at X-band and S-band with different power dividers indicate that the proposed dual-band power divider performs better under the scenario of the upper operating frequency extending to X-band.     

Research on a simulated 60 kW PEMFC cogeneration system for domestic application

INTRODUCTION Distributed cogeneration technology is a hot topic in electrical and energy industries (Ferguson and Ugursal, 2004). China’s need to limit the power usage in some places to meet the peak power demand in summer of recent years stimulated and supported increasing research on distributed generation tech- nologies. Fuel cells, as renewable energy sources, are considered one of the most promising sources of distributed electrical power. Operational fuel cell systems have perform…     

A Brief Analysis of Feminist Pedagogy and its Development in China and America

Taking China and the United States as examples to analyze feminist pedagogy and its development, special attention will be paid to its actual significance in tow different cultures. Feminist pedagogy has been used in America for many years; while in China, it is a relatively new teaching method introduced in the 1980s. Despite its fast development, there are still some problems to be solved as to the construction of local feminist pedagogy in China.     

天高任我飞

Amy Chmelecki always wanted to be a 1)skydiver.She began to learn the sport as early as age 13,and continued through her teenage years.She finally got her first chance at the 2)legal age of 18.After that first experience of 3)freefall,she knew skydiving would be a major focus of her life.Later,Amy earned her skydiving 4)license in New York.For the next three years,she would make time to jump as much as possible during college.After college,Amy headed west to practice the sport at Skydive Arizona.     

The Impact of Culture on Diplomacy and How to Bridge Cultural Gaps in Diplomacy

With the sudden change of the political structure in the world and the acceleration of the globalization,the impact of culture on diplomacy is becoming increasingly obvious.Especially some conflicts in the diplomacy have made it more important to study and analyze the international relations from a cultural perspective.Culture can be the cause of misunderstanding in diplomatic negotiation,but it can also be a very useful tool and instrument for global public diplomacy.Culture as a"soft power" should be used as the key in the diplomacy to bridge the cultural gaps,reduce conflict and misunderstanding and lead to the common goal of peace and development.     

Simulation of CO2 Brayton Cycle for Engine Exhaust Heat Recovery under Various Operating Loads

A bottoming cycle system based on CO2 Brayton cycle is proposed to recover the engine exhaust heat. Its performance is compared with the conventional air Brayton cycle under five typical engine conditions. The results show that CO2 Brayton cycle proves to be superior to the air Brayton cycle in terms of the system net output power, thermal efficiency and recovery efficiency. In most cases, the recovery efficiency of CO2 Brayton cycle can be higher than 9% and the system has a better performance at the engine’s high operating load. The thermal efficiency can be as large as 24.83% under 100% operating load, accordingly, the net output power of 14.86 kW is obtained.     

Decomposing apparent power and losses in distribution systems with nonlinear loads

The definition of reactive power for non-sinusoidal conditions is a controversial issue. The mathematical treatment of nonlinear loads in power systems is also unsettled. This paper starts with the decomposing of apparent power in,the cases of linear and nonlinear loads. When harmonics are present, apparent power is composed of active power, reactive power, and disturbed reactive power. Linear element can be defined as the element without disturbed reactive power. This definition is based on a practical engineering concept which can separate the contribution from the apparent power into utility-duty part and custom-duty part. The field investigation of home-used facilities was conducted. Also the data acquisition in the 0.4 kV distribution systems was completed. Moreover, the loss increase due to the nonlinear loads was estimated. Nonlinear loads can be a dominant effect with respect to reactive power and power factor. Field data from a number of nonlinear load types indicate that the disturbed reactive power can cause significant losses in utility supply systems.     

Simulation experiments on counter beam lighting in highway tunnel

Counter beam lighting was introduced as well as transverse symmetrical lighting and longitudinal symmetrical lighting. Simulation experiments were carried out by using DIAlux lighting software for the above three lighting methods. The results show that counter beam lighting is more reasonable to be adopted in the tunnel entrance zone because its threshold increment of disability glare is greater. Counter beam lighting can improve the background luminance of the obstacles and lighting efficiency compared with transverse symmetrical lighting and longitudinal symmetrical lighting. Therefore, tunnel lighting energy-saving can be achieved by reducing the road luminance demands and luminaries power. Longitudinal symmetrical lighting is conducive to the large luminaries spacing in the tunnel internal zone; so power consumption can be reduced by decreasing the number of luminaries used. Tunnel walls are unsuitable to pave with smooth or bright material. Installation height of the luminaries has less effect on counter beam lighting.