نشریه فرماندهی و کنترل
سال چهارم شماره 1 (پیاپی 11، بهار 1399)

The ever-expanding development of new technologies, especially information and communication technology in the military, has revolutionized the form of wars. Military communications technologies are the basis for effective and accurate military missions. Therefore, providing physical and service items in the telecommunication industry is of particular importance in military matters.The vast majority of supply management models are limited to physical products and few are designed to procure service items, particularly, in the mobile operator industry. Therefore, this paper is aimed to propose dimensions, components and indicators of a multidimensional integrated portfolio model for service supply management in the mobile operator industry. Finally, the purpose of this paper is to identify a set of pertinent supply strategic actions for each group of supplied services. Combining the three high-cited models in the literature background, and adding a new dimension through in-depth interviews with the experts, a four-dimensional multilevel relational reflective model has been proposed for service supply management in the mobile operator industry. This model has been built up using the Fuzzy Delphi method conducted among the mobile industry experts and its goodness of fit has been confirmed through factor analysis. After finalizing the model, it has been applied in MCCI company and 50 services procured by the company has been classified into 16 groups. Then, for each of these groups, based on the suggestions in the literature background, along with using the focused group technique, the pertinent supply strategic actions have been proposed. Finally, a gap analysis has been conducted between the current and the ideal performance of MCCI about applying the list of supply strategic actions.

One of the main topics in the discussion of strategic planning is the implementation of the strategy and its execution, especially in hierarchical organizations. Accordingly, the main question of the research is what is the optimal pattern of implementation and execution of strategy in hierarchical organizations of the army? This research is of exploratory-descriptive type and is applied-developmental in terms of purpose. The data collection method of this research includes library studies, interviews with experts and a questionnaire. The present study was conducted by a mixed method (in both qualitative and quantitative sections), so that using library studies and content analysis of the literature, as well as interviews with 23 experts, the final model of implementation and execution of the strategy is presented.  Also, in the quantitative part, in order to test the model, according to the statistical population, which was estimated to be about 120 people, based on Cochranchr('39')s formula, the number of samples was calculated equal to 92 people and a researcher-made questionnaire was sent to them. Of these, 83 questionnaires were collected and structural equations were modeled and tested. The good fit criterion for the overall model fit is calculated to be 0.73, which indicates the strong fit of the model.

Recently, using social networks increases and people propagate their information through this networks. One of the most important challenges in these networks is sentiment attack, in which the attacker spreads rumors to influence users. Therefor rumor detection become important and attracts expanding research attention. Most of the previous works using deep neural networks for rumor detection without special preprocessing but we propose a new method for preprocessing data before learning which improve results. we use LSTM-CNN architecture with cyclical learning rate to detect Persian rumors. Beside that we investigate BERT model for Persian tweets. Our results demonstrate the effectiveness of this approach for English and Persian rumor detection.

Human capital management of the innovative organizations demands utilization of a set of human resources management functions suited for the staffchr(chr(chr('39')39chr('39'))39chr(chr('39')39chr('39')))s characteristics and designated purposes of the organization. The way by each organization managerschr(chr(chr('39')39chr('39'))39chr(chr('39')39chr('39'))) attitudes towards functions and roles of human resources influence over innovation growth and development and the relation between various approaches to human resources utilization with innovative parameters are included in the managerschr(chr(chr('39')39chr('39'))39chr(chr('39')39chr('39'))) and plannerschr(chr(chr('39')39chr('39'))39chr(chr('39')39chr('39'))) issues in the organizations where a boost to the innovative capabilities is a pivotal factor in their attainment of strategic purposes. Besides this research demonstrates the concerted attitude towards human resources and their major functions, it takes into consideration the relation between the various approaches to utilization of human resources and innovation parameters in defense organizations and specifies the innovation parameters influenced by each approach. As for that, the relation between the various functions of human resources, including liability, cooperation, productivity and submission, and innovation parameters in defense organizations, including defensive prevention, technological attraction capability, production costs decline and accumulation of knowledge in the process, is taken into consideration by the use of CCA and the way by which each approach influences innovation parameters growth and development is clarified.

Improving performance has always been a major challenge for public and private sector organizations. In this context, one of the strategic approaches of organizations for achieving high performance and achieving remarkable success is to develop systematic thinking in the organization. Therefore, this study aimed to investigate the impact of system thinking and its dimensions including hierarchy, concurrency and multiplicity, holography, ambiguous component dependency and environmental relevance on organizational performance improvement. The purpose of this study is applied and descriptive-survey method. The statistical population consists of one of the military personnel who were selected using a Cochran formula of 341 individuals. Data were collected using a 62-item questionnaire consisting of two components of organizational performance and systematic thinking. The data were analyzed using descriptive statistics, Kolmogorov-Smirnov test and Pearson correlation coefficient and structural equation modeling. The findings showed that systematic thinking and each of its dimensions had a significant impact on organizational performance improvement. Accordingly, the systemic thinking variable was able to predict 45% of organizational performance improvement.

Closed-loop control sub-system in Long Range Navigation (LORAN) switching transmitter of a Local Positioning System (LPS) has been implemented by two separate parts of phase and envelope signals. The basic idea of synchronizing current and voltage is based on adding a variable inductor in series with the antenna to change the center frequency of loran pulse, equal to 100 kHz. In this condition, the imaginary part of impedance at input of antenna could be zero and thus the antenna model will be pure ohmic impedance. The phase controller is a suitable circuit designed to determine the phase difference and the proportional controller. For pulse envelope extraction, we apply a single pulse and analyzing the current flow through the antenna. Based on measurements and calculations performed for different modes with a change in the range of 10% of equivalent values ​​of the antenna parameters, the controller performs well, with a maximum zero crossing error in the second- to- twelfth pulse equal to 3.49 ns as well as MMSE and maximum peak error in the first 8 half-cycles were equal to 0.01875 and 0.024657, respectively; which meet the required standards and comply with the Loran pulse.