Requirements management and control

The systems engineering process for thermal nuclear propulsion requirements and configuration definition is described in outline and graphic form. Functional analysis and mission attributes for a Mars exploration mission are also addressed

Red Rock Desert Learning Center & Wild Horse and Burro Facility: Newsletter

The mission of the Red Rock Desert Learning Center is to instill stewardship and respect by increasing knowledge and understanding of the Mojave Desert ecosystemsand cultures through a unique experiential discovery program

Pro Libris: Lubuskie Pismo Literacko-Kulturalne, nr 4 (2011)

142 s. : il

Red Rock Desert Learning Center & Wild Horse and Burro Facility: Frequently Asked Questions

The mission of the Red Rock Desert Learning Center is to instill stewardship and respect by increasing knowledge and understanding of the Mojave Desert ecosystems and cultures through a unique experiential discovery program

Uudenmaan vesienhoidon toimenpideohjelma vuosille 2016 – 2021

Åtgärdsprogrammet för vattenvården i Nyland innehåller uppgifter om vattnens status samt om de åtgärder som krävs för att förbättra och upprätthålla yt- och grundvattnens status under förvaltningsperioden 2016 – 2021. Ytvattnens ekologiska status i är svag i synnerhet på de åkerdominerade avrinningsområdena och i Finska vikens kustvatten. Åarnas och älvarnas status försämras särskilt av eutrofiering till följd av diffus belastning, men också av byggande, reglering och uppdämning. Ytvattnens kemiska status i Nyland har till stor del bedömts vara god. Den sämre än goda kemiska statusen beror i huvudsak på de kvicksilverhalter i abborre som överstiger miljökvalitetsnormen. I Nyland finns 21 grundvattenområden som fastställts ha dålig kemisk status. De vanligaste orsakerna till att den kemiska statu-sen försämrats är grundvattnets kloridhalt, lösningsmedel, bekämpningsmedel samt bensintillsatsen MTBE. De sammanlagda kostnaderna för de åtgärder som föreslås i åtgärdsprogrammet är 372 miljoner euro per år. Härav är 351 mil-joner euro grund- och andra åtgärder som ska vidtas med stöd av annan lagstiftning och 20 miljoner euro åtgärder som kom-pletterar vattenvården. Lagstiftningsbaserade, ekonomiska, förvaltningsmässiga och informationsmässiga styrmetoder har presenterats för att främja genomförandet av åtgärderna. Ansvarsområdena och samarbetsparterna för genomförandet av styr-metoderna har fastställts

Pro Libris: Lubuskie Pismo Literacko-Kulturalne, nr 3 (2011)

175 s. : il.

Pro Libris: Lubuskie Pismo Literacko-Kulturalne, nr 1 (2012)

144 s. : il.

On upper bounds on the smallest size of a saturating set in a projective plane

In a projective plane $\Pi _{q}$ (not necessarily Desarguesian) of order $q,$ a point subset $S$ is saturating (or dense) if any point of $\Pi _{q}\setminus S$ is collinear with two points in$~S$. Using probabilistic methods, the following upper bound on the smallest size $s(2,q)$ of a saturating set in $\Pi _{q}$ is proved: \begin{equation*} s(2,q)\leq 2\sqrt{(q+1)\ln (q+1)}+2\thicksim 2\sqrt{q\ln q}. \end{equation*} We also show that for any constant $c\ge 1$ a random point set of size $k$ in $\Pi _{q}$ with $2c\sqrt{(q+1)\ln(q+1)}+2\le k<\frac{q^{2}-1}{q+2}\thicksim q$ is a saturating set with probability greater than $1-1/(q+1)^{2c^{2}-2}.$ Our probabilistic approach is also applied to multiple saturating sets. A point set $S\subset \Pi_{q}$ is $(1,\mu)$-saturating if for every point $Q$ of $\Pi _{q}\setminus S$ the number of secants of $S$ through $Q$ is at least $\mu$, counted with multiplicity. The multiplicity of a secant $\ell$ is computed as ${\binom{{\#(\ell \,\cap S)}}{{2}}}.$ The following upper bound on the smallest size $s_{\mu }(2,q)$ of a $(1,\mu)$-saturating set in $\Pi_{q}$ is proved: \begin{equation*} s_{\mu }(2,q)\leq 2(\mu +1)\sqrt{(q+1)\ln (q+1)}+2\thicksim 2(\mu +1)\sqrt{ q\ln q}\,\text{ for }\,2\leq \mu \leq \sqrt{q}. \end{equation*} By using inductive constructions, upper bounds on the smallest size of a saturating set (as well as on a $(1,\mu)$-saturating set) in the projective space $PG(N,q)$ are obtained. All the results are also stated in terms of linear covering codes.Comment: 15 pages, 24 references, misprints are corrected, Sections 3-5 and some references are adde

The Redistribution of Efficiency Gains: Transfers or Tariffs?

This paper is concerned with some theoretical issues in cooperative multilateral trade policy reform. The focus of the paper is on the structure of the policy reform problem, particularly as it applies to piecemeal policy reform, and on the similarity in roles that can be played by income transfers on the one hand and tariffs reforms on the other as redistributive policy instruments. More specifically, the paper is concerned with the mechanism by which efficiency gains arising out of trade policy reforms can be distributed amongst countries to achieve a strict Pareto improvement in welfare. Traditionally, trade theorists have assumed the existence of lump sum income transfers to distribute efficiency gains. Turunen-Red and Woodland (2000) have shown that income transfers accompanying quota reforms can be replaced by suitable multilateral tariff reforms to achieve the same welfare outcome. In the current paper, we generalize this idea to deal with discrete policy reforms. And, we develop several applications to enhance understanding of the connection between tariffs and transfers. If lump sum transfers are not available policy instruments, the achievement of a strict Pareto improvement must depend on changes in distortionary taxes, such as domestic taxes or tariffs on trade. Our results show that, under a mild condition on the world trade matrix, it does not matter whether lump sum transfers are available. Transfers can be replaced by a carefully chosen set of tariffs to achieve the same welfare outcome. This ability to replace transfers by tariffs is a result of the structure of the model of international trade: the terms of trade effects for a country and a lump sum transfers are equivalent, and there are sufficient tariff instruments to enable countries to neutralize the domestic price effects of terms of trade movements.