In what follows, I critique the interpretation that Sober and Wilson offer of their group selection model in Unto Others. Sober and Wilson mistakenly claim that their model operates as an example of Simpson’s paradox and defend an interpretation of their model according to which groups are operated upon by natural selection. In the place of their interpretation, I offer one that parallels the m...

We revisit the known problem whether each compact topology is contained in a maximal compact topology and collect some partial answers to this question. For instance we show that each compact topology is contained in a compact topology in which convergent sequences have unique limits. We also answer a question of D.E. Cameron by showing that each sequentially compact topology is contained in a ...

ایماژیسم یا تصویرگرایی مدرن مجموعه ای از تصاویر با صورت های پررنگ ذهنی و ظاهراً بی ربط و منطق است که همانند مونتاژ های سینمایی کنار هم قرار می گیرند. شاعران ایماژیسم از نوعی شعر غنایی و کوتاه ژاپنی، هفده هجایی به نام «هایکو» تأثیر گرفته اند. زبان این شاعران به زبان گفتاری و روزمره بسیار نزدیک است. آنها معتقدند برای ارایۀ مقصود به جای بیان مستقیم باید از عنصر «خیال» بهره گرفت. ایماژیسم با صور خیا...

AIM The change of antemortem blood alcohol concentration (BAC) in inadequately processed samples was examined. METHODS The study was performed on nine healthy, sober volunteers after overnight fasting. Blood samples were divided into groups and stored, with or without NaF, for varying time periods (12, 24 and 48 h) and at different temperatures (4 degrees C and 20 degrees C). BAC analysis was...

In the course of the evaluation of the stream cipher SOBER-t32 submitted to NESSIE, a correlation between initial states has been found for related keys. With high probability some sums of bits of the initial state after key loading do not change their value when a bit of the key is inverted. This holds also for the loading of frame keys. It is shown that the required condition for the frame ke...