IPPs: The Real Issues

1998 ◽  
Vol 37 (4II) ◽  
pp. 811-823
Author(s):  
Anjum Siddiqui

Since May 1998, an important issue facing Pakistan policy-makers has been whether independent power producers (IPPs) produce expensive electricity. It is contended that IPPs’ expensive power has rendered the state utility, Water and Power Development Authority (WAPDA), bankrupt. It is also alleged that IPPs indulged in corruption and colluded with WAPDA officials to get their signatures on contracts which allowed procurement of expensive power by WAPDA and which it can ill afford now. This paper shifts through the rhetoric surrounding IPPs and focuses on the central issue of whether IPPs produce expensive power. If it can be established that IPPs produce cheaper power than WAPDA, then the second part of the argument that WAPDA became financially weak because of IPPs’ expensive power is destroyed. The alleged corruption issues are not discussed as they are beyond the scope of the paper. Section 1 provides a background to the establishment of the private power sector in Pakistan. Section 2 discusses various project risks faced by shareholders and lenders. Section 3 outlines the components of the electricity tariff. Section 4 traces the reasons for increase in electricity tariffs since 1994 when the Power Purchase Agreements (PPA) were signed. Section 5 shows the comparative costs of production of IPPs and WAPDA.

1998 ◽  
Vol 57 (3) ◽  
pp. 429-471 ◽  
Author(s):  
Albertina Albors-Llorens

INMartinez Sala v. Freistaat Bayern (Case C-85/96, judgment of 12 May 1998, not yet reported), the Court of Justice has taken a step towards the clarification of the real force of the EC Treaty provisions on citizenship. Mrs. Martinez Sala was a Spanish national lawfully resident in Germany since 1968 and employed there at intervals between 1976 and 1989. In 1993, she applied to the State of Bavaria for a child-raising allowance, a benefit granted to all residents in Germany who had a dependent child in their care and were either unemployed or had no full-time employment. Her application was rejected on the grounds that at the time that she applied for the benefit she was not in possession of a residence permit, a requirement that had to be met by all non-German nationals. The central issue in the case was, therefore, whether Mrs. Martinez Sala had been discriminated against.


2008 ◽  
Vol 8 (3) ◽  
pp. 74-78
Author(s):  
hank shaw

Portugal has port, Spain has sherry, Sicily has Marsala –– and California has angelica. Angelica is California's original wine: The intensely sweet, fortified dessert cordial has been made in the state for more than two centuries –– primarily made from Mission grapes, first brought to California by the Spanish friars. Angelica was once drunk in vast quantities, but now fewer than a dozen vintners make angelica today. These holdouts from an earlier age are each following a personal quest for the real. For unlike port and sherry, which have strict rules about their production, angelica never gelled into something so distinct that connoisseurs can say, ““This is angelica. This is not.”” This piece looks at the history of the drink, its foggy origins in the Mission period and on through angelica's heyday and down to its degeneration into a staple of the back-alley wino set. Several current vintners are profiled, and they suggest an uncertain future for this cordial.


2021 ◽  
Vol 13 (4) ◽  
pp. 703
Author(s):  
Lvyang Ye ◽  
Yikang Yang ◽  
Xiaolun Jing ◽  
Jiangang Ma ◽  
Lingyu Deng ◽  
...  

With the rapid development of satellite technology and the need to satisfy the increasing demand for location-based services, in challenging environments such as indoors, forests, and canyons, there is an urgent need to improve the position accuracy in these environments. However, traditional algorithms obtain the position solution through time redundancy in exchange for spatial redundancy, and they require continuous observations that cannot satisfy the real-time location services. In addition, they must also consider the clock bias between the satellite and receiver. Therefore, in this paper, we provide a single-satellite integrated navigation algorithm based on the elimination of clock bias for broadband low earth orbit (LEO) satellite communication links. First, we derive the principle of LEO satellite communication link clock bias elimination; then, we give the principle and process of the algorithm. Next, we model and analyze the error of the system. Subsequently, based on the unscented Kalman filter (UKF), we model the state vector and observation vector of our algorithm and give the state and observation equations. Finally, for different scenarios, we conduct qualitative and quantitative analysis through simulations, and the results show that, whether in an altimeter scenario or non-altimeter scenario, the performance indicators of our algorithm are significantly better than the inertial navigation system (INS), which can effectively overcome the divergence problem of INS; compared with the medium earth orbit (MEO) constellation, the navigation trajectory under the LEO constellation is closer to the real trajectory of the aircraft; and compared with the traditional algorithm, the accuracy of each item is improved by more than 95%. These results show that our algorithm not only significantly improves the position error, but also effectively suppresses the divergence of INS. The algorithm is more robust and can satisfy the requirements of cm-level real-time location services in challenging environments.


Author(s):  
Samuel Bimenyimana ◽  
Godwin N. O. Asemota ◽  
Lingling Li
Keyword(s):  

2015 ◽  
Vol 738-739 ◽  
pp. 1105-1110 ◽  
Author(s):  
Yuan Qing Qin ◽  
Ying Jie Cheng ◽  
Chun Jie Zhou

This paper mainly surveys the state-of-the-art on real-time communicaton in industrial wireless local networks(WLANs), and also identifys the suitable approaches to deal with the real-time requirements in future. Firstly, this paper summarizes the features of industrial WLANs and the challenges it encounters. Then according to the real-time problems of industrial WLAN, the fundamental mechanism of each recent representative resolution is analyzed in detail. Meanwhile, the characteristics and performance of these resolutions are adequately compared. Finally, this paper concludes the current of the research and discusses the future development of industrial WLANs.


1975 ◽  
Vol 90 (2) ◽  
pp. 325
Author(s):  
James L. Sundquist ◽  
Ben J. Wattenberg ◽  
Richard M. Scammon

2021 ◽  
Vol 3 (5) ◽  
pp. 23-27
Author(s):  
V. A. ERONIN ◽  
◽  
O. E. EMELYANOV ◽  

The article considers the state, main problems and prospects of development of the real estate market in Russia in modern conditions.


Sign in / Sign up

Export Citation Format

Share Document