BibTex:

    @Article{OJIS-v1i1n02_Kessler,
        title     = {Pattern-sensitive Time-series Anonymization and its Application to Energy-Consumption Data},
        author    = {Stephan Kessler and
                     Erik Buchmann and
                     Thorben Burghardt and
                     Klemens B\~{A}�hm},
        journal   = {Open Journal of Information Systems (OJIS)},
        issn      = {2198-9281},
        year      = {2014},
        volume    = {1},
        number    = {1},
        pages     = {3--22},
        url       = {http://nbn-resolving.de/urn:nbn:de:101:1-201705194696},
        urn       = {urn:nbn:de:101:1-201705194696},
        publisher = {RonPub},
        bibsource = {RonPub},
        abstract = {Time series anonymization is an important problem. One prominent example of time series are energy consumption records, which might reveal details of the daily routine of a household. Existing privacy approaches for time series, e.g., from the field of trajectory anonymization, assume that every single value of a time series contains sensitive information and reduce the data quality very much. In contrast, we consider time series where it is combinations of tuples that represent personal information. We propose (n; l; k)-anonymity, geared to anonymization of time-series data with minimal information loss, assuming that an adversary may learn a few data points. We propose several heuristics to obtain (n; l; k)-anonymity, and we evaluate our approach both with synthetic and real data. Our experiments confirm that it is sufficient to modify time series only moderately in order to fulfill meaningful privacy requirements.}
    }

BibTex:

    @Article{OJIS-v1i1n03_Iivari,
        title     = {Perceived Sociability of Use and Individual Use of Social Networking Sites - A Field Study of Facebook Use in the Arctic},
        author    = {Juhani Iivari},
        journal   = {Open Journal of Information Systems (OJIS)},
        issn      = {2198-9281},
        year      = {2014},
        volume    = {1},
        number    = {1},
        pages     = {23--53},
        url       = {http://nbn-resolving.de/urn:nbn:de:101:1-201705194708},
        urn       = {urn:nbn:de:101:1-201705194708},
        publisher = {RonPub},
        bibsource = {RonPub},
        abstract = {This paper investigates determinants of individual use of social network sites (SNSs). It introduces a new construct, Perceived Sociability of Use (PSOU), to explain the use of such computer mediated communication applications. Based on a field study of 113 Facebook users it shows that PSOU in the sense of maintaining social contacts is a significant predictor of Perceived Benefits (PB), Perceived Enjoyment (PE), attitude toward use and intention to use. Inspired by Benbasat and Barki, this paper also attempts to answer questions "what makes the system useful", "what makes the system enjoyable to use" and "what makes the system sociable to use". As a consequence it pays special focus on systems characteristics of IT applications as potential predictors of PSOU, PB and PE, introducing seven such designable qualities (user-to-user interactivity, user identifiability, system quality, information quality, usability, user-to-system interactivity, and aesthetics). The results indicate that especially satisfaction with user-to-user interactivity is a significant determinant of PSOU, and that satisfactions with six of these seven designable qualities have significant paths in the proposed nomological network.}
    }

BibTex:

    @Article{OJIS-2014v1i2n01_Stackelberg,
        title     = {Detecting Data-Flow Errors in BPMN 2.0},
        author    = {Silvia von Stackelberg and
                     Susanne Putze and
                     Jutta M\~{A}�lle and
                     Klemens B\~{A}�hm},
        journal   = {Open Journal of Information Systems (OJIS)},
        issn      = {2198-9281},
        year      = {2014},
        volume    = {1},
        number    = {2},
        pages     = {1--19},
        url       = {http://nbn-resolving.de/urn:nbn:de:101:1-2017052611934},
        urn       = {urn:nbn:de:101:1-2017052611934},
        publisher = {RonPub},
        bibsource = {RonPub},
        abstract = {Data-flow errors in BPMN 2.0 process models, such as missing or unused data, lead to undesired process executions. In particular, since BPMN 2.0 with a standardized execution semantics allows specifying alternatives for data as well as optional data, identifying missing or unused data systematically is difficult. In this paper, we propose an approach for detecting data-flow errors in BPMN 2.0 process models. We formalize BPMN process models by mapping them to Petri Nets and unfolding the execution semantics regarding data. We define a set of anti-patterns representing data-flow errors of BPMN 2.0 process models. By employing the anti-patterns, our tool performs model checking for the unfolded Petri Nets. The evaluation shows that it detects all data-flow errors identified by hand, and so improves process quality.}
    }

BibTex:

    @Article{OJIS_2014v1i2n02_Shamoi,
        title     = {Fuzzy Color Space for Apparel Coordination},
        author    = {Pakizar Shamoi and
                     Atsushi Inoue and
                     Hiroharu Kawanaka},
        journal   = {Open Journal of Information Systems (OJIS)},
        issn      = {2198-9281},
        year      = {2014},
        volume    = {1},
        number    = {2},
        pages     = {20--28},
        url       = {http://nbn-resolving.de/urn:nbn:de:101:1-201705194710},
        urn       = {urn:nbn:de:101:1-201705194710},
        publisher = {RonPub},
        bibsource = {RonPub},
        abstract = {Human perception of colors constitutes an important part in color theory. The applications of color science are truly omnipresent, and what impression colors make on human plays a vital role in them. In this paper, we offer the novel approach for color information representation and processing using fuzzy sets and logic theory, which is extremely useful in modeling human impressions. Specifically, we use fuzzy mathematics to partition the gamut of feasible colors in HSI color space based on standard linguistic tags. The proposed method can be useful in various image processing applications involving query processing. We demonstrate its effectivity in the implementation of a framework for the apparel online shopping coordination based on a color scheme. It deserves attention, since there is always some uncertainty inherent in the description of apparels.}
    }

BibTex:

    @Article{OJIS_2015v2i1n01_Malaga,
        title     = {Using Nuisance Telephone Denial of Service to Combat Online Sex Trafficking},
        author    = {Ross A. Malaga},
        journal   = {Open Journal of Information Systems (OJIS)},
        issn      = {2198-9281},
        year      = {2015},
        volume    = {2},
        number    = {1},
        pages     = {1--8},
        url       = {http://nbn-resolving.de/urn:nbn:de:101:1-201705194736},
        urn       = {urn:nbn:de:101:1-201705194736},
        publisher = {RonPub},
        bibsource = {RonPub},
        abstract = {Over the past few years, sex trafficking has been linked to online classified ads sites such as Craigslist.com and Backpage.com. However, to date technology-based solutions have not been used to attack classified ad sites or the advertisers. This paper proposes and tests a new approach to combating online sex trafficking promulgated via online classified ad sites - nuisance telephone denial of service (TDoS) attacks on the advertisers. The method of attack is described and implications are discussed.}
    }

BibTex:

    @Article{OJIS_2015v2i1n02_Cunha,
        title     = {IT Governance Practices for Electric Utilities: Insights from Brazil and Europe},
        author    = {Paulo Rupino da Cunha and
                     Luiz Mauricio Martins and
                     Ant\~{A}�o Moura and
                     Ant\~{A}�nio Dias de Figueiredo},
        journal   = {Open Journal of Information Systems (OJIS)},
        issn      = {2198-9281},
        year      = {2015},
        volume    = {2},
        number    = {1},
        pages     = {9--28},
        url       = {http://nbn-resolving.de/urn:nbn:de:101:1-201705194743},
        urn       = {urn:nbn:de:101:1-201705194743},
        publisher = {RonPub},
        bibsource = {RonPub},
        abstract = {We propose a framework of 14 IT governance practices tailored for the electric utilities sector. They were selected and ranked as "essential", "important", or "good" by top executives and IT staff from two multi-billion dollar companies - one in Brazil and another in Europe - from a generic set of 83 collected in the literature and in the field. Our framework addresses a need of electric utilities for which specific guidance was lacking. We have also uncovered a significant impact of social issues in IT governance, whose depth seems to be missing in the current research. As a byproduct of our work, the larger generic framework from which we have departed and the tailoring method that we have proposed can be used to customize the generic framework to different industries.}
    }

BibTex:

    @Article{OJIS_2015v2i1n03_Hayashi,
        title     = {Relationship between Externalized Knowledge and Evaluation in the Process of Creating Strategic Scenarios},
        author    = {Teruaki Hayashi and
                     Yukio Ohsawa},
        journal   = {Open Journal of Information Systems (OJIS)},
        issn      = {2198-9281},
        year      = {2015},
        volume    = {2},
        number    = {1},
        pages     = {29--40},
        url       = {http://nbn-resolving.de/urn:nbn:de:101:1-201705194751},
        urn       = {urn:nbn:de:101:1-201705194751},
        publisher = {RonPub},
        bibsource = {RonPub},
        abstract = {Social systems are changing so rapidly that it is important for humans to make decisions considering uncertainty. A scenario is information about the series of events/actions, which supports decision makers to take actions and reduce risks. We propose Action Planning for refining simple ideas into practical scenarios (strategic scenarios). Frameworks and items on Action Planning Sheets provide participants with organized constraints, to lead to creative and logical thinking for solving real issues in businesses or daily life. Communication among participants who have preset roles leads the externalization of knowledge. In this study, we set three criteria for evaluating strategic scenarios; novelty, utility, and feasibility, and examine the relationship between externalized knowledge and the evaluation values, in order to consider factors which affect the evaluations. Regarding a word contained in roles and scenarios as the smallest unit of knowledge, we calculate Relativeness between roles and scenarios. The results of our experiment suggest that the lower the relativeness of a strategic scenario, the higher the strategic scenario is evaluated in novelty. In addition, in the evaluation of utility, a scenario satisfying a covert requirement tends to be estimated higher. Moreover, we found the externalization of stakeholders may affect the realization of strategic scenarios.}
    }

BibTex:

    @Article{OJIS_2015v2i2n02_Majchrzak,
        title     = {Achieving Business Practicability of Model-Driven Cross-Platform Apps},
        author    = {Tim A. Majchrzak and
                     Jan Ernsting and
                     Herbert Kuchen},
        journal   = {Open Journal of Information Systems (OJIS)},
        issn      = {2198-9281},
        year      = {2015},
        volume    = {2},
        number    = {2},
        pages     = {4--15},
        url       = {http://nbn-resolving.de/urn:nbn:de:101:1-201705194768},
        urn       = {urn:nbn:de:101:1-201705194768},
        publisher = {RonPub},
        bibsource = {RonPub},
        abstract = {Due to the incompatibility of mobile device platforms such as Android and iOS, apps have to be developed separately for each target platform. Cross-platform development approaches based on Web technology have significantly improved over the last years. However, since they do not lead to native apps, these frameworks are not feasible for all kinds of business apps. Moreover, the way apps are developed is cumbersome. Advanced cross-platform approaches such as MD2, which is based on model-driven development (MDSD) techniques, are a much more powerful yet less mature choice. We discuss business implications of MDSD for apps and introduce MD2 as our proposed solution to fulfill typical requirements. Moreover, we highlight a business-oriented enhancement that further increases MD2's business practicability. We generalize our findings and sketch the path towards more versatile MDSD of apps.}
    }

BibTex:

    @Article{OJIS_2015v2i2n03_Nakamura,
        title     = {Concept Design for Creating Essential Hypothesis, Rules, and Goals: Toward a Data Marketplace},
        author    = {Jun Nakamura and
                     Masahiko Teramoto},
        journal   = {Open Journal of Information Systems (OJIS)},
        issn      = {2198-9281},
        year      = {2015},
        volume    = {2},
        number    = {2},
        pages     = {16--26},
        url       = {http://nbn-resolving.de/urn:nbn:de:101:1-201705194774},
        urn       = {urn:nbn:de:101:1-201705194774},
        publisher = {RonPub},
        bibsource = {RonPub},
        abstract = {The abductive reasoning model has been discussed in the context of business strategy. However, this model seems unrealistic for applications in the real business world considering the unpredictable, competitive business environment. This study improves the model by formulating an experimental case study through a web-based workplace for generating product ideas. We discuss the possible embodiment of product ideas as the basis for configuring features through the use of dynamic quality function deployment. The entire concept design process is proposed as a blueprint for building a data marketplace.}
    }

BibTex:

    @Article{OJIS_2015v2i2n04_Ikegami,
        title     = {Model of Creative Thinking Process on Analysis of Handwriting by Digital Pen},
        author    = {Kenshin Ikegami and
                     Yukio Ohsawa},
        journal   = {Open Journal of Information Systems (OJIS)},
        issn      = {2198-9281},
        year      = {2015},
        volume    = {2},
        number    = {2},
        pages     = {27--39},
        url       = {http://nbn-resolving.de/urn:nbn:de:101:1-201705194781},
        urn       = {urn:nbn:de:101:1-201705194781},
        publisher = {RonPub},
        bibsource = {RonPub},
        abstract = {In order to perceive infrequent events as hints for new ideas, it is desired to know and model the process of creating and refining ideas. In this paper, we address this modeling problem experimentally. Firstly, we focus on the relation between thinking time and writing time in handwriting. We observe two types of patterns; one group takes longer time in thinking and shorter in writing, the other takes longer in writing and shorter in thinking. The group having spends longer in writing has shorter time span from one sentence to another than the other group. Backtracking, i.e., the event that  participants return back to their former sheet and modify opinions, is observed more often in the group of longer writing than the other group. In addition, participants in this backtracking group gets higher scores for their ideas on sheets than those in the no-backtracking group. We propose a model of creative thinking by applying Operations of Structure of Intellect. It is inferred that the group of longer writing conducts a series of thinking flow, including divergent thinking, convergent thinking and evaluation. In contrast, the group of longer thinking tends to conduct the two different thinking flow: divergent thinking and evaluation; convergent thinking and evaluation. For making creative ideas, we conduct divergent thinking without evaluation and created a large number of ideas. We conclude that the rotations of divergent thinking, convergent thinking and evaluation increase the frequency of "backtracking" and make the ideas more logical ones.}
    }

BibTex:

    @Article{OJIS_2015v1i2n01p_Ohsawa,
        title     = {Designing the Market of Data - For Practical Data Sharing via Educational and Innovative Communications},
        author    = {Yukio Ohsawa and
                     Akinori Abe},
        journal   = {Open Journal of Information Systems (OJIS)},
        issn      = {2198-9281},
        year      = {2015},
        volume    = {2},
        number    = {2},
        pages     = {1--3},
        url       = {http://nbn-resolving.de/urn:nbn:de:101:1-201705194720},
        urn       = {urn:nbn:de:101:1-201705194720},
        publisher = {RonPub},
        bibsource = {RonPub},
        abstract = {This special issue of Open Journal of Information Systems (OJIS) reports work on designing the market of data for practical data sharing via educational and innovative communications (MoDAT). In the market of data, data are reasonably dealt with sold, opened, or shared based on negotiation. Since last years, we have been aiming at realizing a social environment, where each person feels free to share one's own and others' data for learning the latent value of data without fearing the loss of business opportunities. In the market, data and analysts' knowledge are shared by selling and buying, with reasonably determining the conditions for sharing. People in the market may communicate with each other in order to decide to expose the data as open-source, if the trust of the data provider is expected to be elevated highly due to the contribution to people in the public. Thus the Market of Data means a place where the value of data and knowledge can be externalized. OJIS is published by RonPub (www.ronpub.com), which is an academic publisher of online, open access, peer-reviewed journals.}
    }

BibTex:

    @Article{OJIS_2015v2i2n05_Kushiro,
        title     = {A Toulmin's Framework-Based Method for Design Argumentation of Cyber-Physical Systems},
        author    = {Noriyuki Kushiro and
                     Ryoichi Torikai and
                     Shodai Matsuda and
                     Kunio Takahara},
        journal   = {Open Journal of Information Systems (OJIS)},
        issn      = {2198-9281},
        year      = {2015},
        volume    = {2},
        number    = {2},
        pages     = {40--55},
        url       = {http://nbn-resolving.de/urn:nbn:de:101:1-201705194809},
        urn       = {urn:nbn:de:101:1-201705194809},
        publisher = {RonPub},
        bibsource = {RonPub},
        abstract = {The design of cyber-physical systems (CPS) is a promising domain, where the data market is expected to soon penetrate. When engineers focus on only a particular part of data (whether intentionally or not) for establishing a design hypothesis, the design hypothesis may also be supported by data sets in the market. Therefore, the validity of such a design hypothesis cannot be evaluated by the data itself, and can only be accepted by the robustness of the logic behind the design argumentation. Although the validation of the design logic is significant, cognitive aspects (which people have spontaneously) disturb the design argumentation reasoning. Therefore, a design method that overcomes the cognitive aspects is indispensable for the CPS designers. This work proposes a CPS design method using the interaction between logic and data sets with a logic visualization tool, and applies the proposed method to the design of a diagnosis system for semiconductor manufacture. The capability of the proposed method is also discussed and analyzed in this paper.}
    }