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Sound substitution is a process whereby a phoneme in a loanword is replaced by its closest phone in the borrowing language. Many English loanwords with consonants /T/, /w/, /k/ and /g/ have been adapted by Persian. None of these consonants exist as a phoneme in Persian. The pronunciation or substitution of these consonants by their closest phone in Persian depends on the phonological environment; the dental /T/ is replaced by [t] and [s] respectively in the onset and coda. The bilabial /w/ is replaced by [v] in the onset. However, since [w] is only used as an intervocalic consonant in Persian, it acts like an intervocalic consonant upon the declusterization of word initial /sw/. Therefore, it is not usually replaced by any consonant in this environment. Finally, the velar consonants /k/ and /g/ either change to palatal [c] and [Š] respectively or do not change at all, due to the phonological environment. This research aimed at explaining each of these sound substitution processes within the framework of optimality theory (Prince and Smolensky, 1993/2004). It presents arguments in favor of constraint rankings which cause the occurances of these processes.

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This paper aims to investigate the ways in which socio-linguistic parameters such as gender contribute into the turn organization of defense sessions. Interruption plays an important role in the organization of turn taking in the interactions of defense sessions. The current paper is then primarily focused on the description and analysis of interruptions in the interactions of dissertation defense sessions of Persian speakers using the “community of practice” approach. A number of discourse and pragmatic functions (e.g. defense, directiveness, cooperation, competition, etc.) have been identified for interruptions in relation to the power relations of interlocutors in the interactions. Apart from qualitative analysis, some quantitative findings have been provided for further clarification. The analysis of data shows that it is mainly the social status of a speaker that influences the types and frequency of interruption rather than his/her gender. In other words, the social variable does not play an important role in the interruption for turn organization in the defense sessions of Persian speakers.  

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The contrastive  function of [spread glottis] in the description of stops and fricatives has been approved in many languages, such as English, but its role in the phonological behavior of Persian stops, not  fricatives, has been discussed yet. This paper based on Glottal timing theory shows that regarding this laryngeal feature in the description of Persian fricatives has got phonetic plausibility. By taking its contractiveness into account, Persian phonetic possibilities, then, regarding this feature has been dedicated in the framework of derivational approach. The results also show that applying this feature brings more economic and efficient analyses about some superficial unrelated phonological processes such as spirantisization of velar stop, fricativization of aspirated onsets and postfricative voicing based on autosegmental and optimality theoreis. This is why this paper suggests that voiceless fricatives together with voceless stops would form a natural class based on the shared feature, that is [+spread], and their voiced counterparts form a natural class due to shared [-spread] as well.

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The present study, using some morphological Persian constructions, explores Morphological Doubling Theory (Inkelas and Zoll 2005, henceforth MDT) and its essential claim as regards resulting reduplication when the morphology calls twice for a constituent of a given semantic description. In contrast to the previous theories and approaches categorizing reduplication as phonological duplication, MDT categorizes it generally as reduplication of given morpho- semantic features. To answer the research question and know whether the formation of Persian reduplicated constructions are explainable and justifiable in MDT framework or not, using two categories of semantic and morphotactic evidence, some Persian data are analyzed in MDT framework. Semantic evidence such as root allomorphoy, synonym constructions, echo reduplication, medial full reduplication and antonym constructions together with morphotactic evidence such as ezafe vowel, indifference-ke construction, interfix, linker or enclitic and melodic overwriting are some pieces of used evidence for exploring MDT framework in the studied constructions in Persian. The present study, with a descriptive-analytic method, has been carried out by studying some Persian data gathered through people’s daily natural conversations, written works on Persian morphology and authors’ intuition. Analyzing the gathered data reveals that adopting MDT, in addition to presenting a comprehensive description and analysis of Persian reduplication, makes it possible to describe and study the structure and semantic of the reduplicated constructions that were not appropriately analyzable previously. 
 

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The aim of this study is to determine the underlying laryngeal feature of Persian obstruents in final position and their neutralizations based on the concepts of Laryngeal Phonology and acoustic measurements. Four female speakers read the words inserted in three carrier sentences. Hence the effect of three environments on neutralization phenomenon has been investigated: pre-silence word final position, pre-vowel word final position, pre-obstruent word final position. Applying Praat software (version 5315) seven acoustic correlates of voicing distinction have been extracted from the data: vowel duration, consonant duration, voice bar duration, voice rate, voice onset time, burst duration and intensity of burst. After statistical analysis, underlying laryngeal feature has been specified based on the concepts of laryngeal phonology. The findings show that the distinctive dimension in Persian obstruents is GW which is not neutralized in final position. Furthermore, Persian unmarked phonemes are passively voiced in inter-sonorant position. Thus Persian, like other Germanic languages, is an aspiration language in which GW is phonologically specified.
 

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Being a descriptive-analytic research in Persian language, the present study deals with morphophonological processes to examine the performance of Stratal Optimality Theory for the first time.  Stratal OT is a hybrid model of OT in which the insights of Lexical Phonology and Morphology are broadly combined with parallel OT. Stratal OT posits constraint evaluation at three distinct levels or strata: stem, word and phrase level and as such it can show the intermediate levels showing the formation of the optimal option. This multi-level variation of the original OT model may provide more economical and elegant explanations of problems involving opacity, derived environment effects than other Parallel OT theories that have been developed to address these issues.
The data in this research have been collected through databases and written phonological resources. This paper studies deletion, insertion and compensatory lengthening processes within Stratal OT. The relevant constraints and their interactions in each level have been represented through different tablues. The results showed that Stratal OT has more explanatory power than Parallel OT to explain the mentioned  processes. Interestingly, Constraints at each level follow a consistent ranking pattern.
 
 

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The statistical data of Tehran Province shows that the ratios of output and employment of service sector to total provincial output and employment are 57 and 63 percent in 2001, respectively. The aim of this article is to quantitatively explain the structure of service –based economy of province, using Input-Output Model and intersectional linkages by Eigen Vector method. So, the main question in this research is that can the usage of Eigen vector method rather than traditional methods like Chenery-Watanabe and Rasmussen methods evaluate more precisely the importance of provincial economic sectors on the basis of intermediate viability in the production process?     For this purpose, first the Input-Output Table of “Tehran Province” for 2001 was estimated by AFLQ method, and then the importance of provincial economic sectors was measured in terms of forward and backward linkages by Chenery-Watanabe, Rasmussen and Eigen vector methods.     The results show that Eigen Vector Method can explain the importance of economic sectors of province on the basis of intermediate viability in the production process, in such a way that four key sectors are of dominant shares in industrial activities which their average share of demand out of total output is 45.5 percent, but ratios for 71 economic and service sectors are 76 percent and 84 percent, respectively. In general, results show that the nature of service sector in Tehran province is different from the services in modern economies. The main reason is that the service sector in Tehran is the consuming rather than producing sector.

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The acoustic information can be evidence for many considered matters in other linguistics areas, especially in spoken morphology and speech processing. The present study investigates the Persian derivational words of prefixes and the degree of parsability in processing, understanding, and receiving the meaning of derived words by some acoustic evidence. For this reason, the derived words of the prefixes «nɑ», «ham», and «farɑ» and their bases were extracted from the Institute of Humanities.  We chose two parsable and non-parsable derived words of each derivational prefix and put them in carrier sentences. Then, We investigate the acoustic features such as duration, pitch, formants, intensity, duration of maximum intensity, and the clarity of transition point The results show that the relative duration of parsable words is more than non-parsable words. The degree of co-articulation in pitch frequency, first, second, and third formant frequency of non-parsable words in transition points of affix and base and statically position of affix is more than parsable words because of incorporation and without potential pauses. In non-parsable words, the relative maximum duration of intensity is more with the smooth trend. So, the clarity of formants in parsable words is more than in non-parsable words at the transition points.

1. Introduction
According to the presence of the structure of derived words in spoken language, the mental lexical processing can be assessed by its phonetic expression and the variations of morpho-phonetic structures can be surveyed in derived words. According to Plag (2014), we can use morpho-phonetic variations for morphological theories and lexical processing. Hay and Bayeen (2003) through the investigation of phonotactics in parsable and non-parsable derived words in the Complexity-Based Ordering approach considered that in non-parsable words the boundary of affix and base is not discerned very easily due to the affix and base are in phonological Entanglement and during the morphological processing, it’s considered as a whole word because the frequency of the derived word is more than the frequency of its base. This approach by using spoken morphology criteria provides some proofs based on the parsability of the base from the affix. In this regard Hay (2007), Plag and et. (2017) by using the acoustic feature of duration investigated the co-articulation of parsable words. They believed that the co-articulation in non-parsable words is more than the parsable words because in non-parsable words the effect of the adjacent phoneme in the transition point is more.

2. Research Hypothesis
This study tries to answer the question of whether in Persian derived words the acoustic features of duration, pitch, intensity, and clarity of the transition point of affix and base can explain the degree of parsability. The results of this research can be used in the theories of the mental lexicon, speech producing, understanding, and perception of the lexical meaning.

3. Research Method
In the present study, we chose three prefixes of «nɑ-», «ham-», and «farɑ-» from Hemasian (2019). We selected two derived words of each prefix in the way that the non-parsable derived word with high token frequency is placed below the trend line of its scatter plot and the parsable derived word with high token frequency is placed above the trend line of its scatter plot. The chosen words are Hamdasti and Hamdardi, Namardi and Namaree, Foruraftan, and foruravande. For creating the same situation of speech we put the derived words in the same carrier sentences and the same position.

4. Result
In this study, we investigate some acoustic evidence in the degree of parsability for Persian-derived words. For determining whether the duration feature can have any effect on the perception of the degree of parsability of affix from the base, it was found that affix and base duration and relative duration in non-parsable derived words are less than parsable words. Also, the duration differentiation of the last phoneme of the prefix and the first phoneme of the base in non-parsable words are more than in parsable words. These results are in accordance with Hay (2007). Then our hypothesis based on the duration of Persian derived words can be used as a piece of evidence for the degree of parsability is confirmed. In responding to this question that the pitch and formants can be described the morphological structure of derived words according to the transition point in the attachment slot of the affix to the base and the static position of the affix, it showed that the degree of co-articulation in non-parsable words based on the continuity and no potential pause is more. For answering the effect of intensity on the morphological structure of derived words according to findings it determined that in non-parsable words raising duration is more and intensity is very smooth to reach maximize. Then our hypothesis based on the relative raising intensity in non-parsable words is confirmed. In responding to the degree of derived words parsability and the relation with clarity of transition point and with concerning the formants by mapping spectrum it found that the clarity in a transition point in parsable words is more than in non-parsable words. Also, in the transition point, we can see the beginning of the next phoneme very easily. Ultimately, it was found that we can determine the degree of parsability in prefixed derived words by acoustic evidence.

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This study examines the chemical composition of the essential oil of Xanthium strumarium fruits, and evaluates its antioxidant and antimicrobial activities on various plant pathogens that commonly cause irreparable damages to agricultural crops. The essential oil of X. strumarium fruitswas analyzed by Gas Chromatography coupled to Mass Spectrometry (GC/MS). Antimicrobial activity was tested against 14 microorganisms, including three gram-positive, five gram-negative bacteria and six fungi, using disk diffusion method and the Minimum Inhibitory Concentration (MIC) technique. The X. strumarium fruitswere also subjected to screening for possible antioxidant activity by using catalase, guaiacol peroxidase, superoxide dismutase enzymes and 2, 2-DiPhenyl-1-Picryl Hydrazyl (DPPH) assay. Thirty six components were identified, representing 97.89% of the total oil, with methyl linoleate (40.64%), methyl oleate (13.12%), and methyl palmitate (12.43%) being the major ingredients. The essential oil showed significant activity against Rathayibacter toxicus (MIC= 25 µg mL^-1), and Pyricularia oryzae (MIC= 12.5 µg mL^-1). In addition, the analysis of free radical scavenging activities of the X. strumarium fruitsrevealed antiradical activity of 138.87 µg mL^-1 in DPPH, 32.766 µmole activity/mg protein in catalase, 5.567 mmol activity/mg protein in guaiacol peroxidase and 1.714 U mg^-1 protein in superoxide dismutase. Furthermore, the phytochemical analysis showed moderate to good amounts of alkaloid (0.54 mg g^-1), phenolic (54.44 mg g^-1) and flavonoid (20.11 mg g^-1) compounds in X. strumarium fruits. Our results suggest that this plant may be a potential source of biocide, for economical and environmentally friendly disease control strategies. It may also be a good candidate for further biological and pharmacological investigations.

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Sustainable development is not possible without the participation of all segments of society. One of the criteria for the development of countries is the level of women's participation in governing bodies. Despite the empowerment of women and the desire to participate in management, the promotion of women still faces obstacles and challenges. The present qualitative research, using the thematic analysis method, aims to identify the elements of the model of women's promotion to executive positions in Iranian public organizations. The sample consists of 42 female-male managers and women experts who have worked in public sectors. The sampling method is purposeful and theoretical saturation has been used to achieve adequate sampling. The data collection was based on individual and centralized semi-structured interview methods and was analyzed at three stages of descriptive, interpretive and integration coding. According to the findings, the elements of women's promotion model in 4 main themes and 12 sub-themes include: Gender awareness and re-defining of women's identity (thoughtful awareness instead of passive acceptance, re-defining women's identity, empathy instead of self-suppression, role management), political determination (supportive and determined government), jurisprudential and legal reconsideration, the formation of women's parties, the system of equal promotion opportunity (the strategy of selecting the right instead of appointing the affiliated, encouraging promotion instead of persuading the job), collective awakening and national determination (collective awareness, cooperation of reference groups and formation of civil institutions). The results show that the establishment of the proposed model will be possible by creating an interactive space between social actors in the heart of structures. To create such an atmosphere, the formation of human-centered discourse is essential. This discourse has four dimensions: interpersonal discourse, inter-party discourse, competency discourse and social discourse.