scholarly journals What Really Matters in Auction Design

2002 ◽  
Vol 16 (1) ◽  
pp. 169-189 ◽  
Author(s):  
Paul Klemperer
Keyword(s):  
Mobile Phone ◽  
Competition Policy ◽  
Third Generation ◽  
Auction Design ◽  
Uniform Price ◽  
Spectrum Auctions ◽  
Sealed Bid ◽  
Ascending Auctions

The most important issues in auction design are the traditional concerns of competition policy-preventing collusive, predatory, and entry-deterring behavior. Ascending and uniform-price auctions are particularly vulnerable to these problems. The Anglo-Dutch auctiona hybrid of the sealed-bid and ascending auctions-may perform better. Effective antitrust is also critical. Notable fiascoes in auctioning mobile-phone licenses, television franchises, companies, eletricty, etc., and especially the European “third-generation” (UMTS) spectrum auctions, show that everything depends on the details of the context. Auction design is not “one size fits all.”

scholarly journals A Simple Auction Mechanism for the Optimal Allocation of the Commons

2008 ◽  
Vol 98 (1) ◽  
pp. 496-518 ◽  
Author(s):  
Juan-Pablo Montero
Keyword(s):  
Optimal Allocation ◽  
Pollution Abatement ◽  
Dominant Strategy ◽  
Truth Telling ◽  
Uniform Price ◽  
Auction Mechanism ◽  
Sealed Bid ◽  
Regulated Firms ◽  
The Commons ◽  
Number Of Firms

Efficient regulation of the commons requires information about the regulated firms that is rarely available to regulators (e.g., cost of pollution abatement). This paper proposes a simple mechanism that implements the first-best for any number of firms: a uniform price, sealed-bid auction of an endogenous number of (transferable) licenses with a fraction of the auction revenues given back to firms. Paybacks, which rapidly decrease with the number of firms, are such that truth-telling is a dominant strategy regardless of whether firms behave non-cooperatively or collusively. The mechanism also provides firms with incentives to invest in socially optimal R&D. (JEL D44, L51, Q21)

scholarly journals Design of a multiband internal antenna for third generation mobile phone handsets

2003 ◽  
Vol 51 (7) ◽  
pp. 1452-1461 ◽  
Author(s):  
M. Ali ◽  
G.J. Hayes ◽  
Huan-Sheng Hwang ◽  
R.A. Sadler
Keyword(s):  
Mobile Phone ◽  
Third Generation ◽  
Internal Antenna

scholarly journals Measuring the Efficiency of an FCC Spectrum Auction

2013 ◽  
Vol 5 (1) ◽  
pp. 100-146 ◽  
Author(s):  
Jeremy T Fox ◽  
Patrick Bajari
Keyword(s):  
Stability Condition ◽  
Allocative Efficiency ◽  
Theoretical Models ◽  
Pairwise Stability ◽  
Spectrum Auctions ◽  
Spectrum Auction ◽  
Deterministic Component ◽  
Ascending Auctions ◽  
Demand Reduction ◽  
Stability Results

We propose a method to structurally estimate the deterministic component of bidder valuations in FCC spectrum auctions, and apply it to the 1995–1996 C block auction. We base estimation on a pairwise stability condition: two bidders cannot exchange two licenses in a way that increases the sum of their valuations. Pairwise stability holds in some theoretical models of simultaneous ascending auctions under intimidatory collusion and demand reduction. Pairwise stability results in a matching game approach to estimation. We find that a system of four large regional licenses would raise the allocative efficiency of the C block outcome by 48 percent. (JEL D44, D45, H82, L82)

scholarly journals Modeling a 3G Mobile Phone base Radio using Artificial Intelligence Techniques

2021 ◽  
Author(s):  
Eduardo Calo ◽  
Gabriel Vaca ◽  
Cristina Sánchez ◽  
David Jines ◽  
Giovanny Amancha ◽  
...  
Keyword(s):  
Artificial Intelligence ◽  
Mobile Phone ◽  
Predictive Model ◽  
Third Party ◽  
Management Tool ◽  
Practical Case ◽  
Third Generation ◽  
Data Set ◽  
Artificial Intelligence Techniques ◽  
3G Mobile Phone

The main objective of this work is to be able to use artificial intelligence techniques to be able to design a predictive model of the performance of a third-generation mobile phone base radio, using the analysis of KPIs obtained in a statistical data set of the daily behaviour of an RBS. For the realization of these models, various techniques such as Decision Trees, Neural Networks and Random Forest were used. which will allow faster progress in the deep analysis of large amounts of data statistics and get better results. In this part of the work, data was obtained from the behaviour of a third-party mobile phone base radio generation of the Claro operator in Ecuador, it should be noted that. The data are KPIs of the daily and hourly performance of a radio base of third generation mobile telephony, these data were obtained through the operator's remote monitoring and management tool Sure call PRS. To specify this practical case, several models were generated based on in various artificial intelligence technique for the prediction of performance results of a mobile phone base radio of third generation, the same ones that after several tests were creation of a predictive model that determines the performance of a mobile phone base radio. As a conclusion of this work, it was determined that the development of a predictive model based on artificial intelligence techniques is very useful for the analysis of large amounts of data in order to find or predict complex results, more quickly and trustworthy.

Reproductive System State among Generations of Male Rats, Obtained from Irradiated Parents and Subjected to Electromagnetic Interference from Mobile Phone (1745 MHz)

2018 ◽  
pp. 33-40 ◽  
Author(s):  
Юрий Григорьев ◽  
Yuriy Grigor'ev ◽  
Н. Чуешова ◽  
N. Chueshova ◽  
Г. Верещако ◽  
...  
Keyword(s):  
Blood Serum ◽  
Mobile Phone ◽  
Reproductive System ◽  
Birth Rate ◽  
Male Rats ◽  
Third Generation ◽  
The Third ◽  
Three Generations ◽  
Males And Females ◽  
Epididymal Spermatozoa

Purpose: To study the condition of the reproductive system of the male rats at three generations (F1–F3) received from irradiated parents and who were exposed daily to the mobile phone (1745 MHz, 8 hours/day) until reaching the age of 6 months. Material and methods: The white rats aged 52–54 days were subjected to electromagnetic exposure from the mobile phone (1745 MHz, 8 hours/day, power density 0.2–20 μW/cm2, x = 7.5±0.3 μW/cm2) for 90 days. The irradiated males and females were then mated in a 1:2 ratio. The females throughout the gestation period (20–21 days) and the offspring (F1) obtained from them continued to be irradiated under the above-mentioned regimen until reaching the age of 6 months. The animals of the 1st generation (males and females) at the age of 4 months mated for the generation of the second generation, and from them in the same way received the offspring of the third generation. The state of the reproductive system of male rats of 3 generations was evaluated at the age of 2, 4 and 6 months. Results: It is established that birth rate at the irradiated animals of three generations authentically falls. This posterity from 8 females makes 53, 86 and 45 % respectively in the 1st, 2nd and 3rd generation of the control group. The electromagnetic effect affected the weight of the testicles and epididymis of rats of three generations, mainly at the age of 4 and 6 months. The mass of testicles increased at animals of the 3 generation at the age of 4 months and at animals of the 3rd generation at the age of 6 months. The mass of epididymis generally increases at animals of 4 months of the F1–F3, but at the age of 6 months in the 1st generation falls, and correlates with a decrease in the number of epididymal spermatozoa. There is also a decrease in the absolute and relative mass of seminal vesicles in irradiated animals of three generations at the age of 2 months. At exposed animals of 3 generations of 2 months there are no significant deviations in the process of spermatogenesis, however at the age of 4 and 6 months there are significant violations of the number of spermatids of different types. In male rats of the 1st generation at the age of 2 and 6 months exposed to EMP in the prenatal and postnatal periods and obtained from irradiated parents, a drop in the number of epididymal spermatozoa is observed, while in the irradiated animals of the 2nd and 3rd generation at the age of 2 months, there is a marked increase in the number of these cells. Their viability is reduced in all age groups (2, 4 and 6 months), which is statistically significant at the age of 2 and 4 months of animals of the 1st generation. In male rats of 1–3 generations at the age of 2 months and in 4 months 2nd generation, there was a significant decreased the concentration of testosterone in the blood serum by 65.8, 43.6, 82.8 and 93.4 %, respectively. Conclusions: The long-term effect of low-intensity electromagnetic radiation from the mobile phone on the body of rats of males and females, leads to a decrease in the birth rate of irradiated animals, which reaches 45 % in the third generation. Significant changes in the studied indicators of the reproductive system of male rats of three generations are revealed, which is reflected in a decrease in the number of epididymal spermatozoa in the 1st generation and in a significant increase in the 2nd and 3rd generation – early puberty, in the fall of their viability and the predominant decrease in the concentration of testosterone in the blood serum.

Niobate-based microwave dielectrics suitable for third generation mobile phone base stations

2001 ◽  
Vol 79 (18) ◽  
pp. 2952-2954 ◽  
Author(s):  
H. Hughes ◽  
D. M. Iddles ◽  
I. M. Reaney
Keyword(s):  
Mobile Phone ◽  
Base Stations ◽  
Third Generation ◽  
Microwave Dielectrics
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