Archiv on it-grossniklaus.ch https://it-grossniklaus.ch/categories/archiv/ Recent content in Archiv on it-grossniklaus.ch Hugo de Fri, 15 Dec 2017 13:04:01 +0100 IAM https://it-grossniklaus.ch/pages/topics/archive/iam/iam/ Fri, 15 Dec 2017 13:04:01 +0100 https://it-grossniklaus.ch/pages/topics/archive/iam/iam/ <h1 id="archiv-aus-meiner-zeit-am-iam">Archiv aus meiner Zeit am IAM</h1> <p><a href="http://www.iam.unibe.ch">IAM</a>: Institut für Informatik und angewandte Mathematik (IAM) der Philosophisch-naturwissenschaftliche Fakultät der Universität Bern.</p> <p>Da konnte ich doch tatsächlich noch ein paar Veröffentlichungen von mir ab 1991 ausgraben. Schon damals haben wir unsere Arbeiten via Internet zur Verfügung gestellt. Es war die (Internet-)Zeit des <a href="http://en.wikipedia.org/wiki/Usenet">Usenet</a>, <a href="http://en.wikipedia.org/wiki/File_Transfer_Protocol">ftp</a>, <a href="http://en.wikipedia.org/wiki/Gopher_%28protocol%29">Gopher</a> und <a href="http://en.wikipedia.org/wiki/Archie_search_engine">Archie</a>. 1993 kam das (öffentliche) <a href="http://en.wikipedia.org/wiki/World_Wide_Web">www</a> dazu, gefolgt vom ersten Browser <a href="http://en.wikipedia.org/wiki/Mosaic_%28web_browser%29">Mosaic</a>.</p> <p>Von Multimedia wie heute, war das noch weit entfernt. Google wurde erst 1998 gegründet (<a href="http://en.wikipedia.org/wiki/Web_search_engine">Web search engine</a>).</p> Color Quantization https://it-grossniklaus.ch/pages/topics/archive/iam/color-quantization/ Fri, 15 Dec 2017 13:04:01 +0100 https://it-grossniklaus.ch/pages/topics/archive/iam/color-quantization/ <h2 id="1991">1991</h2> <p><a href="http://en.wikipedia.org/wiki/Color_quantization">en.wikipedia.org Color quantization</a></p> <p>Damals konnten (bezahlbare) Grafikkarten nur 256 Farben (meist aus einer Auswahl von 16 Millionen Farben) gleichzeitig darstellen. An Arbeitsplätzen des Inselspitals wurden Computertomographie-Bilder betrachtet. Darum sollte die Konvertierung von Bildern mit 16 Millionen Farben auf solche mit nur noch 256 optimiert werden.</p> <p>Ich implementierte 5 unterschiedliche Algorithmen <a href="http://en.wikipedia.org/wiki/Median_cut">Media cut</a>, <a href="http://en.wikipedia.org/wiki/Octree">Octree</a>, Popularity (mit neuartigem Zusatz zur Minimierung der Summer aller <a href="http://en.wikipedia.org/wiki/Euclidean_distance">euklidischen Distanzen</a>), Uniform Quantisation und <a href="http://en.wikipedia.org/wiki/Floyd%E2%80%93Steinberg_dithering">Floyd–Steinberg dithering</a>. Der Source-Code findet sich noch immer in diversen Web-Archiven und hier:<a href="https://it-grossniklaus.ch/archiv/iamwww.unibe.ch/1991/pub/Graphics/ImageProcessing/convert_32_to_8">convert_32_to_8</a></p> Bibcard https://it-grossniklaus.ch/pages/topics/archive/iam/bibcard/ Fri, 15 Dec 2017 13:04:01 +0100 https://it-grossniklaus.ch/pages/topics/archive/iam/bibcard/ <h2 id="1992">1992</h2> <!-- raw HTML omitted --> <p>Entwicklung von <a href="https://it-grossniklaus.ch/archiv/iamwww.unibe.ch/1992/pub/X11/bibcard-1.11">Bibcard</a> - ein X11 basiertes Benutzerinterface für <a href="http://en.wikipedia.org/wiki/BibTeX">BiBTeX</a> Datenbanken.</p> Design und Implementation einer CD-i-Applikation https://it-grossniklaus.ch/pages/topics/archive/iam/cdi/ Fri, 15 Dec 2017 13:04:01 +0100 https://it-grossniklaus.ch/pages/topics/archive/iam/cdi/ <h2 id="1996">1996</h2> <p><a href="https://it-grossniklaus.ch/archiv/iamwww.unibe.ch/1996/diplom/dipl0a.html"><img src="https://it-grossniklaus.ch/archiv/iamwww.unibe.ch/1996/diplom/snappro1.gif" alt="Ein CD-i Player"></a></p> <p>Diese Diplomarbeit wurde in enger Zusammenarbeit mit der HyperStudio AG in Muttenz durchgeführt, die ein multimediales Lehrprogramm für PC und Macintoshcomputer entwickelte.</p> <p>In der vorliegenden Dokumentation werden die schon beim Design einer CD-i-Applikation zu berücksichtigenden Aspekte des CD-i-Standards dargelegt. Dazu gehören, nebst den Grundlagen der digitalen Datenspeicherung auf Compact-Discs, auch die speziellen Audio- und Videofähigkeiten der CD-i-Geräte. Weiter werden die verschiedenen Projektphasen von der Idee bis zur Produktion vorgestellt. Die am IAM durchgeführten Arbeitsschritte, nämlich die Bearbeitung des Datenmaterials und die Implementierung des Programmes, werden detailliert erläutert.</p> DWH 2001 https://it-grossniklaus.ch/pages/topics/archive/dwh-2001-2005/dwh-2001/ Fri, 15 Dec 2017 10:45:51 +0100 https://it-grossniklaus.ch/pages/topics/archive/dwh-2001-2005/dwh-2001/ <h3 id="datawarehouse-aus-dem-jahr-2001">Datawarehouse aus dem Jahr 2001</h3> <ul> <li>Aufbau, Betrieb und laufende Erweiterung zwischen 2001 und 2005</li> <li>ETL Projekt: <ul> <li>diverse Input-Quellen</li> <li>laden nach SOURCE</li> <li>aufbereiten in STAGE</li> <li>überführen nach CORE</li> <li>füllen von STAR</li> <li>bauen von CUBES</li> <li>Reports mit diversen Client-Tools</li> </ul> </li> <li>grobe <a href="../files/mis_overview_2.pdf">Übersicht</a></li> <li><a href="../sal/">Star SAL</a></li> <li><a href="../mms/">Star MMS</a></li> <li><a href="../nat/">Star NAT</a></li> <li><a href="../fin/">Star FIN</a></li> <li><a href="../inv/">Star INV</a></li> </ul> <h4 id="kenngrössen">Kenngrössen</h4> <table> <thead> <tr> <th style="text-align: left">Cube</th> <th style="text-align: left">#Facts</th> <th style="text-align: left">#Measures</th> <th style="text-align: left">#Dim</th> <th style="text-align: left">#Levels</th> <th style="text-align: left">#Hierarchien</th> </tr> </thead> <tbody> <tr> <td style="text-align: left">SAL</td> <td style="text-align: left">8</td> <td style="text-align: left">233</td> <td style="text-align: left">5</td> <td style="text-align: left">21</td> <td style="text-align: left">9</td> </tr> <tr> <td style="text-align: left">MMS</td> <td style="text-align: left">11</td> <td style="text-align: left">16</td> <td style="text-align: left">15</td> <td style="text-align: left">40</td> <td style="text-align: left">23</td> </tr> <tr> <td style="text-align: left">NAT</td> <td style="text-align: left">13</td> <td style="text-align: left">6</td> <td style="text-align: left">7</td> <td style="text-align: left">45</td> <td style="text-align: left">21</td> </tr> <tr> <td style="text-align: left">INV</td> <td style="text-align: left">23</td> <td style="text-align: left">207</td> <td style="text-align: left">3</td> <td style="text-align: left">12</td> <td style="text-align: left">5</td> </tr> <tr> <td style="text-align: left">FIN</td> <td style="text-align: left">3</td> <td style="text-align: left">28</td> <td style="text-align: left">9</td> <td style="text-align: left">33</td> <td style="text-align: left">13</td> </tr> <tr> <td style="text-align: left">RIS</td> <td style="text-align: left">0</td> <td style="text-align: left">463</td> <td style="text-align: left">5</td> <td style="text-align: left">0</td> <td style="text-align: left">0</td> </tr> </tbody> </table> <p>In obiger Darstellung sind die Würfel (Cubes) Galaxien. In den Galaxien gibt es Sterne. In einem Sternensystem ist eine Fakt-Tabelle mit mehreren Dimensionen verbunden. Einige Systeme bezeichnen das dann als Cube, dabei sind es eigentlich &ldquo;nur&rdquo; Sterne. Je nach Zählart haben wir hier 6 oder 58 Würfel.</p> Star SAL https://it-grossniklaus.ch/pages/topics/archive/dwh-2001-2005/sal/ Mon, 04 Dec 2017 14:30:00 +0100 https://it-grossniklaus.ch/pages/topics/archive/dwh-2001-2005/sal/ <h3 id="star">Star</h3> <p><img src="../img/sal/1_sal_star.png" alt="1_sal_star"></p> <h3 id="dimensionen">Dimensionen</h3> <p><img src="../img/sal/2_sal_dim_customer.png" alt="2_sal_dim_customer"></p> <p><img src="../img/sal/2_sal_dim_item.png" alt="2_sal_dim_item"></p> <p><img src="../img/sal/2_sal_dim_reason.png" alt="2_sal_dim_reason"></p> <p><img src="../img/sal/2_sal_dim_region.png" alt="2_sal_dim_region"></p> <p><img src="../img/sal/2_sal_dim_time.png" alt="2_sal_dim_time"></p> <h3 id="facts">Facts</h3> <p><img src="../img/sal/3_sal_fact_budget_fc_a.png" alt="3_sal_fact_budget_fc_a"></p> <p><img src="../img/sal/3_sal_fact_budget_fc_b.png" alt="3_sal_fact_budget_fc_b"></p> <p><img src="../img/sal/3_sal_fact_budget_year.png" alt="3_sal_fact_budget_year"></p> <p><img src="../img/sal/3_sal_fact_item_cs.png" alt="3_sal_fact_item_cs"></p> <p><img src="../img/sal/3_sal_fact_item_pr.png" alt="3_sal_fact_item_pr"></p> <p><img src="../img/sal/3_sal_fact_sales_a.png" alt="3_sal_fact_sales_a"></p> <p><img src="../img/sal/3_sal_fact_sales_b.png" alt="3_sal_fact_sales_b"></p> <p><img src="../img/sal/3_sal_fact_sales_copr.png" alt="3_sal_fact_sales_copr"></p> <p><img src="../img/sal/3_sal_fact_sales_noti_a.png" alt="3_sal_fact_sales_noti_a"></p> <p><img src="../img/sal/3_sal_fact_sales_noti_b.png" alt="3_sal_fact_sales_noti_b"></p> <p><img src="../img/sal/3_sal_fact_trend.png" alt="3_sal_fact_trend"></p> Star MMS https://it-grossniklaus.ch/pages/topics/archive/dwh-2001-2005/mms/ Mon, 04 Dec 2017 14:30:00 +0100 https://it-grossniklaus.ch/pages/topics/archive/dwh-2001-2005/mms/ <h3 id="star">Star</h3> <p><img src="../img/mms/1_mms_star.png" alt="1_mms_star"></p> <h3 id="dimensionen">Dimensionen</h3> <p><img src="../img/mms/2_mms_dim_activity.png" alt="2_mms_dim_activity"></p> <p><img src="../img/mms/2_mms_dim_addrstat.png" alt="2_mms_dim_addrstat"></p> <p><img src="../img/mms/2_mms_dim_article.png" alt="2_mms_dim_article"></p> <p><img src="../img/mms/2_mms_dim_comptype.png" alt="2_mms_dim_comptype"></p> <p><img src="../img/mms/2_mms_dim_contact.png" alt="2_mms_dim_contact"></p> <p><img src="../img/mms/2_mms_dim_contactstat.png" alt="2_mms_dim_contactstat"></p> <p><img src="../img/mms/2_mms_dim_customer.png" alt="2_mms_dim_customer"></p> <p><img src="../img/mms/2_mms_dim_persontype.png" alt="2_mms_dim_persontype"></p> <p><img src="../img/mms/2_mms_dim_potential.png" alt="2_mms_dim_potential"></p> <p><img src="../img/mms/2_mms_dim_region.png" alt="2_mms_dim_region"></p> <p><img src="../img/mms/2_mms_dim_salesgroup.png" alt="2_mms_dim_salesgroup"></p> <p><img src="../img/mms/2_mms_dim_salesrep.png" alt="2_mms_dim_salesrep"></p> <p><img src="../img/mms/2_mms_dim_speciality.png" alt="2_mms_dim_speciality"></p> <p><img src="../img/mms/2_mms_dim_time.png" alt="2_mms_dim_time"></p> <h3 id="facts">Facts</h3> <p><img src="../img/mms/3_mms_fact_activity_star.png" alt="3_mms_fact_activity_star"></p> <p><img src="../img/mms/3_mms_fact_address_star.png" alt="3_mms_fact_address_star"></p> <p><img src="../img/mms/3_mms_fact_call_sg_star.png" alt="3_mms_fact_call_sg_star"></p> <p><img src="../img/mms/3_mms_fact_call_star.png" alt="3_mms_fact_call_star"></p> <p><img src="../img/mms/3_mms_fact_contact_sg_star.png" alt="3_mms_fact_contact_sg_star"></p> <p><img src="../img/mms/3_mms_fact_contact_star.png" alt="3_mms_fact_contact_star"></p> <p><img src="../img/mms/3_mms_fact_salesgroup_star.png" alt="3_mms_fact_salesgroup_star"></p> Star NAT https://it-grossniklaus.ch/pages/topics/archive/dwh-2001-2005/nat/ Mon, 04 Dec 2017 14:30:00 +0100 https://it-grossniklaus.ch/pages/topics/archive/dwh-2001-2005/nat/ <h3 id="star">Star</h3> <p><img src="../img/nat/1_nat_star.png" alt="1_nat_star"></p> <h3 id="dimensionen">Dimensionen</h3> <p><img src="../img/nat/2_nat_dim_channel.png" alt="2_nat_dim_channel"></p> <p><img src="../img/nat/2_nat_dim_gen.png" alt="2_nat_dim_gen"></p> <p><img src="../img/nat/2_nat_dim_iks.png" alt="2_nat_dim_iks"></p> <p><img src="../img/nat/2_nat_dim_item_a.png" alt="2_nat_dim_item_a"></p> <p><img src="../img/nat/2_nat_dim_item_b.png" alt="2_nat_dim_item_b"></p> <p><img src="../img/nat/2_nat_dim_sl.png" alt="2_nat_dim_sl"></p> <p><img src="../img/nat/2_nat_dim_time.png" alt="2_nat_dim_time"></p> <h3 id="facts">Facts</h3> <p><img src="../img/nat/3_nat_fact_count_act.png" alt="3_nat_fact_count_act"></p> <p><img src="../img/nat/3_nat_fact_prices.png" alt="3_nat_fact_prices"></p> <p><img src="../img/nat/3_nat_fact_units_act.png" alt="3_nat_fact_units_act"></p> <p><img src="../img/nat/3_nat_fact_values_act.png" alt="3_nat_fact_values_act"></p> Star FIN https://it-grossniklaus.ch/pages/topics/archive/dwh-2001-2005/fin/ Mon, 04 Dec 2017 14:30:00 +0100 https://it-grossniklaus.ch/pages/topics/archive/dwh-2001-2005/fin/ <h3 id="star">Star</h3> <p><img src="../img/fin/1_fin_star.png" alt="1_fin_star"></p> <h3 id="dimensionen">Dimensionen</h3> <p><img src="../img/fin/2_fin_dim_account.png" alt="2_fin_dim_account"></p> <p><img src="../img/fin/2_fin_dim_comp_cost_center.png" alt="2_fin_dim_comp_cost_center"></p> <p><img src="../img/fin/2_fin_dim_doctype.png" alt="2_fin_dim_doctype"></p> <p><img src="../img/fin/2_fin_dim_gl_postcode.png" alt="2_fin_dim_gl_postcode"></p> <p><img src="../img/fin/2_fin_dim_sl_postcode.png" alt="2_fin_dim_sl_postcode"></p> <p><img src="../img/fin/2_fin_dim_subledger.png" alt="2_fin_dim_subledger"></p> <p><img src="../img/fin/2_fin_dim_supplier.png" alt="2_fin_dim_supplier"></p> <p><img src="../img/fin/2_fin_dim_supply_company.png" alt="2_fin_dim_supply_company"></p> <p><img src="../img/fin/2_fin_dim_time.png" alt="2_fin_dim_time"></p> <h3 id="facts">Facts</h3> <ul> <li>nicht öffentlich</li> </ul> Star INV https://it-grossniklaus.ch/pages/topics/archive/dwh-2001-2005/inv/ Mon, 04 Dec 2017 14:30:00 +0100 https://it-grossniklaus.ch/pages/topics/archive/dwh-2001-2005/inv/ <h3 id="star">Star</h3> <p><img src="../img/inv/1_inv_star.png" alt="1_inv_star"></p> <h3 id="dimensionen">Dimensionen</h3> <p><img src="../img/inv/2_inv_dim_item.png" alt="2_inv_dim_item"></p> <p><img src="../img/inv/2_inv_dim_reason.png" alt="2_inv_dim_reason"></p> <p><img src="../img/inv/2_inv_dim_time.png" alt="2_inv_dim_time"></p> <h3 id="facts">Facts</h3> <p><img src="../img/inv/3_inv_fact_item_cost.png" alt="3_inv_fact_item_cost"></p> <p><img src="../img/inv/3_inv_fact_itm_ldg_copr_un.png" alt="3_inv_fact_itm_ldg_copr_un"></p> <p><img src="../img/inv/3_inv_fact_itm_ldg_copr_val.png" alt="3_inv_fact_itm_ldg_copr_val"></p> <p><img src="../img/inv/3_inv_fact_itm_ldg_un.png" alt="3_inv_fact_itm_ldg_un"></p> <p><img src="../img/inv/3_inv_fact_itm_ldg_val.png" alt="3_inv_fact_itm_ldg_val"></p> <p><img src="../img/inv/3_inv_fact_sal_copr_un.png" alt="3_inv_fact_sal_copr_un"></p> <p><img src="../img/inv/3_inv_fact_sal_copr_val.png" alt="3_inv_fact_sal_copr_val"></p> <p><img src="../img/inv/3_inv_fact_sal_un.png" alt="3_inv_fact_sal_un"></p> <p><img src="../img/inv/3_inv_fact_sal_val_a.png" alt="3_inv_fact_sal_val_a"></p> <p><img src="../img/inv/3_inv_fact_sal_val_b.png" alt="3_inv_fact_sal_val_b"></p> <p><img src="../img/inv/3_inv_fact_stk_copr_mo_un.png" alt="3_inv_fact_stk_copr_mo_un"></p> <p><img src="../img/inv/3_inv_fact_stk_copr_mo_val.png" alt="3_inv_fact_stk_copr_mo_val"></p> <p><img src="../img/inv/3_inv_fact_stk_mo_un.png" alt="3_inv_fact_stk_mo_un"></p> <p><img src="../img/inv/3_inv_fact_stk_mo_val_a.png" alt="3_inv_fact_stk_mo_val_a"></p> <p><img src="../img/inv/3_inv_fact_stk_mo_val_b.png" alt="3_inv_fact_stk_mo_val_b"></p> <p><img src="../img/inv/3_inv_fact_stk_oth_copr_un.png" alt="3_inv_fact_stk_oth_copr_un"></p> <p><img src="../img/inv/3_inv_fact_stk_oth_un.png" alt="3_inv_fact_stk_oth_un"></p>