@inproceedings{HuhntRichter,
  author    = {Huhnt, Wolfgang and Richter, Sven},
  title     = {Modification Management for Planning and Construction Processes},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  issn      = {1611-4086},
  doi       = {10.25643/bauhaus-universitaet.2851},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170314-28510},
  pages     = {13},
  abstract  = {Planning and construction processes are characterized by the peculiarity that they need to be designed individually for each project. It is necessary to set up an individual schedule for each project. As a basis for a new project, schedules from already finished projects are used, but adaptions are always necessary. In practice, scheduling tools only document a process. Schedules cover a set of activities, their duration and a set of interdependencies between activities. The design of a process is up to the user. It is not necessary to specify each interdependency, and completeness and correctness need to be checked manually. No methodologies are available to guarantee properties such as correctness or completeness. The considerations presented in the paper are based on an approach where a planning and a construction process including the interdependencies between planning and construction activities are regarded as a result. Selected information need to be specified by a user, and a proposal for an order of planning and construction activities is computed. As a consequence, process properties such as correctness and completeness can be guaranteed with respect to user input. Especially in Germany, clients are allowed to modify their requirements at any time. This leads to modifications in the planning and construction processes. This paper covers a mathematical formulation for this problem based on set theory. A complex structure is set up covering objects and relations; and operations are defined that guarantee consistency in the underlying and versioned process description. The presented considerations are based on previous work. This paper can be regarded as the next step in a series of previous work describing how a suitable concept for handling, planning and construction processes in civil engineering can be formed.},
  subject      = {Angewandte Informatik},
  language  = {en}
}
@inproceedings{HuhntGielsdorf,
  author    = {Huhnt, Wolfgang and Gielsdorf, F.},
  title     = {TOPOLOGICAL INFORMATION AS LEADING INFORMATION IN BUILDING PRODUCT MODELS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2911},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29110},
  pages     = {11},
  abstract  = {Digital models of buildings are widely used in civil engineering. In these models, geometric information is used as leading information. Engineers are used to have geometric information, and, for instance, it is state of the art to specify a point by its three coordinates. However, the traditional approaches have disadvantages. Geometric information is over-determined. Thus, more geometric information is specified and stored than needed. In addition, engineers already deal with topological information. A denotation of objects in buildings is of topological nature. It has to be answered whether approaches where topological information becomes a leading role would be more efficient in civil engineering. This paper presents such an approach. Topological information is modelled independently of geometric information. It is used for denoting the objects of a building. Geometric information is associated to topological information so that geometric information "weights" a topology. The concept presented in this paper has already been used in surveying existing buildings. Experiences in the use of this concept showed that the number of geometric information that is required for a complete specification of a building could be reduced by a factor up to 100. Further research will show how this concept can be used in planning processes.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{Huhnt2004,
  author    = {Huhnt, Wolfgang},
  title     = {Progress Measurement in Planning Processes on the Base of Process Models},
  doi       = {10.25643/bauhaus-universitaet.166},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1664},
  year      = {2004},
  abstract  = {This paper presents a specific modeling technique that is focused on preparing planning processes in civil engineering. Planning processes in civil engineering are characterized by some peculiarities so that the sequence of planning tasks needs to be determined for each planning project. Neither the use of optimized partial processes nor the use of lower detailed and optimized processes guarantee an optimal overall planning process. The modeling technique considers these peculiarities. In a first step, it is focused on the logic of the planning process. Algorithms based on the graph theory determine that logic. This approach ensures consistency and logical correctness of the description of a planning process at the early beginning in its preparation phase. Sets of data - the products of engineers like technical drawings, technical models, reports, or specifications - form the core of the presented modeling technique. The production of these sets of data requires time and money. This is expressed by a specific weighting of each set of data in the presented modeling technique. The introduction of these weights allows an efficient progress measurement and controlling of a planning project. For this purpose, a link between the modeling technique used in the preparation phase and the execution phase is necessary so that target and actual values are available for controlling purposes. The present paper covers the description of this link. An example is given to illustrate the use of the modeling technique for planning processes in civil engineering projects.},
  subject      = {Baubetrieb},
  language  = {en}
}
@inproceedings{HeinrichHuhnt2003,
  author    = {Heinrich, Timo and Huhnt, Wolfgang},
  title     = {Determination of Effects of Modefications during Planning Processes},
  doi       = {10.25643/bauhaus-universitaet.306},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3065},
  year      = {2003},
  abstract  = {Usually, the co-ordination of design and planning tasks of a project in the construction industries is done in a paper based way. Subsequent modifications have to be handled manually. The effects of modifications cannot be determined automatically. The approach to specify a complete process model before project start does not consider the requirements of the construction industries. The effort of specification at the beginning and during the process (modifications) does not justify the use of standard process model techniques. A new approach is presented in the according paper. A complete process model is deducted on the basis of a core. The core consists of process elements and specific relations between them. Modifications need to be specified in the core only. The effort of specification is therefore reduced. The deduction of the complete process is based on the graph theory. Algorithms of the graph theory are also used to determine the effects of modifications during project work.},
  subject      = {CAD},
  language  = {en}
}
@inproceedings{Huhnt2000,
  author    = {Huhnt, Wolfgang},
  title     = {Modellierung der Prozesse als Basis der Informationssysteme f{\"u}r Bauunternehmen},
  doi       = {10.25643/bauhaus-universitaet.596},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5969},
  year      = {2000},
  abstract  = {Die fachlichen Grundlagen der Aufgaben, die in einem Bauunternehmen zu bearbeiten sind, wurden in verschiedenen Disziplinen entwickelt. Maßgeblich waren der Baubetrieb und die Betriebswirtschaftslehre. Die parallele Entwicklung hat jedoch dazu gef{\"u}hrt, dass grundlegende Begriff und Verfahren zwischen den Disziplinen nicht aufeinander abgestimmt sind. Die verschiedenen Aufgaben beeinflussen jedoch einander. Innerhalb der jeweiligen Disziplin wurden Informationssysteme entwickelt, mit denen sich die Aufgaben aus der jeweiligen Disziplin bearbeiten lassen. Zur Verbindung der "verschiedenen Welten" existieren zwar ausgew{\"a}hlte Schnittstellen, eine durchg{\"a}ngige verteilte Bearbeitung der verschiedenen Aufgaben wird jedoch noch nicht umfassend unterst{\"u}tzt. Im vorliegenden Beitrag wird ein Vorgehen vorgestellt, auf dessen Grundlage eine verteilte Bearbeitung der fachgebiets{\"u}bergreifenden Aufgaben erfolgen kann. Das Vorgehen beruht auf der Modellierung der Prozesse sowie der zur Bearbeitung der als Bestandteil der Prozesse spezifizierten Aufgaben ben{\"o}tigten Informationen. Dieses Modell wird auf der Grundlage der Mengenlehre mit einem entsprechenden Werkzeug aufgebaut. Die Spezifikation der Informationen wird genutzt, um Datenbankschemata zu generieren, die Spezifikation der Aufgaben wird genutzt, um Werkzeuge zur Bearbeitung zu identifizieren. Diese Werkzeuge sind in Java als Applets implementiert und k{\"o}nnen {\"u}ber entsprechende Treiber auf die Datenbanken zugreifen. Das Prozessmodell wird in einem n{\"a}chsten Schritt erweitert. Personen werden eingef{\"u}hrt. Diesen Personen werden Aufgaben zugewiesen, deren Bearbeitung sie ausf{\"u}hren sollen. Auf der Grundlage des erweiterten Prozessmodells werden die Applets, die eine Person ben{\"o}tigt, auf einer entsprechenden Internet-Seite zusammengestellt. Damit kann projektspezifisch ein Informationssystem zusammengestellt werden, das eine verteilte Bearbeitung der verschiedenartigen Aufgaben unterst{\"u}tzt.},
  subject      = {Baubetrieb},
  language  = {de}
}
@article{Huhnt1997,
  author    = {Huhnt, Wolfgang},
  title     = {Informationstechnische Integration im Bauwesen durch Nutzung fachspezifischen Anwenderwissens},
  doi       = {10.25643/bauhaus-universitaet.490},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4901},
  year      = {1997},
  abstract  = {Im vorliegenden Beitrag wird ein Integrationskonzept vorgestellt, bei dem das fachspezifische Wissen des Anwenders integraler Bestandteil des Konzeptes ist. Grundgedanke des Konzeptes ist es, die Informationen vorerst im Kontext der Anwendung, mit der sie erstellt wurden, zu belassen. Die Interpretation der Informationen erfolgt durch den Anwender, der diese Informationen zur Integration nutzen m{\"o}chte. Er weiß, welche Daten er f{\"u}r seine Arbeiten ben{\"o}tigt, und er verf{\"u}gt {\"u}ber das erforderliche fachspezifische Wissen, um die Informationen anderer Bearbeiter verstehen zu k{\"o}nnen. Damit ist es nicht erforderlich, die internen Datenstrukturen einer Software zu verstehen und in einem neutralen Format zu beschreiben. Die Integration erfolgt interaktiv am Bildschirm durch den Anwender. Das vorgestellt Konzept wird in den Kontext der in der Literatur beschriebenen Integrationskonzepte eingegliedert. Hierzu werden die Integrationskonzepte klassifiziert. Die Klassifikation erfolgt auf der Grundlage der Software-Architekturen. Das vorgestellte Integrationskonzept wird am Beispiel der Angebotsbearbeitung im Bauwesen konkretisiert.},
  subject      = {CAD},
  language  = {de}
}